Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (417 commits)
  MAINTAINERS: EB110ATX is not ebsa110
  MAINTAINERS: update Eric Miao's email address and status
  fb: add support of LCD display controller on pxa168/910 (base layer)
  [ARM] 5552/1: ep93xx get_uart_rate(): use EP93XX_SYSCON_PWRCNT and EP93XX_SYSCON_PWRCN
  [ARM] pxa/sharpsl_pm: zaurus needs generic pxa suspend/resume routines
  [ARM] 5544/1: Trust PrimeCell resource sizes
  [ARM] pxa/sharpsl_pm: cleanup of gpio-related code.
  [ARM] pxa/sharpsl_pm: drop set_irq_type calls
  [ARM] pxa/sharpsl_pm: merge pxa-specific code into generic one
  [ARM] pxa/sharpsl_pm: merge the two sharpsl_pm.c since it's now pxa specific
  [ARM] sa1100: remove unused collie_pm.c
  [ARM] pxa: fix the conflicting non-static declarations of global_gpios[]
  [ARM] 5550/1: Add default configure file for w90p910 platform
  [ARM] 5549/1: Add clock api for w90p910 platform.
  [ARM] 5548/1: Add gpio api for w90p910 platform
  [ARM] 5551/1: Add multi-function pin api for w90p910 platform.
  [ARM] Make ARM_VIC_NR depend on ARM_VIC
  [ARM] 5546/1: ARM PL022 SSP/SPI driver v3
  ARM: OMAP4: SMP: Update defconfig for OMAP4430
  ARM: OMAP4: SMP: Enable SMP support for OMAP4430
  ...

43 files changed, 3241 insertions, 553 deletions

diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index 9dd68fafb374..efe85d095190 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -23,6 +23,11 @@ config ARCH_OMAP3
         select CPU_V7
         select COMMON_CLKDEV
 
+config ARCH_OMAP4
+        bool "TI OMAP4"
+        select CPU_V7
+        select ARM_GIC
+
 endchoice
 
 comment "OMAP Feature Selections"
@@ -40,7 +45,6 @@ config OMAP_DEBUG_LEDS
 config OMAP_DEBUG_POWERDOMAIN
         bool "Emit debug messages from powerdomain layer"
         depends on ARCH_OMAP2 || ARCH_OMAP3
-        default n
         help
           Say Y here if you want to compile in powerdomain layer
           debugging messages for OMAP2/3.   These messages can
@@ -52,7 +56,6 @@ config OMAP_DEBUG_POWERDOMAIN
 config OMAP_DEBUG_CLOCKDOMAIN
         bool "Emit debug messages from clockdomain layer"
         depends on ARCH_OMAP2 || ARCH_OMAP3
-        default n
         help
           Say Y here if you want to compile in clockdomain layer
           debugging messages for OMAP2/3.   These messages can
@@ -110,11 +113,13 @@ config OMAP_MCBSP
 config OMAP_MBOX_FWK
         tristate "Mailbox framework support"
         depends on ARCH_OMAP
-        default n
         help
           Say Y here if you want to use OMAP Mailbox framework support for
           DSP, IVA1.0 and IVA2 in OMAP1/2/3.
 
+config OMAP_IOMMU
+        tristate
+
 choice
         prompt "System timer"
         default OMAP_MPU_TIMER
@@ -128,13 +133,13 @@ config OMAP_MPU_TIMER
 
 config OMAP_32K_TIMER
         bool "Use 32KHz timer"
-        depends on ARCH_OMAP16XX || ARCH_OMAP24XX || ARCH_OMAP34XX
+        depends on ARCH_OMAP16XX || ARCH_OMAP24XX || ARCH_OMAP34XX || ARCH_OMAP4
         help
           Select this option if you want to enable the OMAP 32KHz timer.
           This timer saves power compared to the OMAP_MPU_TIMER, and has
           support for no tick during idle. The 32KHz timer provides less
           intra-tick resolution than OMAP_MPU_TIMER. The 32KHz timer is
-          currently only available for OMAP16XX, 24XX and 34XX.
+          currently only available for OMAP16XX, 24XX, 34XX and OMAP4.
 
 endchoice
 
@@ -149,7 +154,7 @@ config OMAP_32K_TIMER_HZ
 
 config OMAP_DM_TIMER
         bool "Use dual-mode timer"
-        depends on ARCH_OMAP16XX || ARCH_OMAP24XX || ARCH_OMAP34XX
+        depends on ARCH_OMAP16XX || ARCH_OMAP24XX || ARCH_OMAP34XX || ARCH_OMAP4
         help
          Select this option if you want to use OMAP Dual-Mode timers.
 
@@ -171,7 +176,7 @@ endchoice
 
 config OMAP_SERIAL_WAKE
         bool "Enable wake-up events for serial ports"
-        depends on OMAP_MUX
+        depends on ARCH_OMAP1 && OMAP_MUX
         default y
         help
           Select this option if you want to have your system wake up
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 04a100cfb8e5..a83279523958 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -13,6 +13,7 @@ obj-  :=
 obj-$(CONFIG_ARCH_OMAP16XX) += ocpi.o
 
 obj-$(CONFIG_OMAP_MCBSP) += mcbsp.o
+obj-$(CONFIG_OMAP_IOMMU) += iommu.o iovmm.o
 
 obj-$(CONFIG_CPU_FREQ) += cpu-omap.o
 obj-$(CONFIG_OMAP_DM_TIMER) += dmtimer.o
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 29efc279287a..e8c327a45a55 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -36,10 +36,40 @@ static struct clk_functions *arch_clock;
  * Standard clock functions defined in include/linux/clk.h
  *-------------------------------------------------------------------------*/
 
+/* This functions is moved to arch/arm/common/clkdev.c. For OMAP4 since
+ * clock framework is not up , it is defined here to avoid rework in
+ * every driver. Also dummy prcm reset function is added */
+
+/* Dummy hooks only for OMAP4.For rest OMAPs, common clkdev is used */
+#if defined(CONFIG_ARCH_OMAP4)
+struct clk *clk_get(struct device *dev, const char *id)
+{
+        return NULL;
+}
+EXPORT_SYMBOL(clk_get);
+
+void clk_put(struct clk *clk)
+{
+}
+EXPORT_SYMBOL(clk_put);
+
+void omap2_clk_prepare_for_reboot(void)
+{
+}
+EXPORT_SYMBOL(omap2_clk_prepare_for_reboot);
+
+void omap_prcm_arch_reset(char mode)
+{
+}
+EXPORT_SYMBOL(omap_prcm_arch_reset);
+#endif
 int clk_enable(struct clk *clk)
 {
         unsigned long flags;
         int ret = 0;
+        if (cpu_is_omap44xx())
+                /* OMAP4 clk framework not supported yet */
+                return 0;
 
         if (clk == NULL || IS_ERR(clk))
                 return -EINVAL;
@@ -140,6 +170,9 @@ int clk_set_parent(struct clk *clk, struct clk *parent)
         unsigned long flags;
         int ret = -EINVAL;
 
+        if (cpu_is_omap44xx())
+        /* OMAP4 clk framework not supported yet */
+                return 0;
         if (clk == NULL || IS_ERR(clk) || parent == NULL || IS_ERR(parent))
                 return ret;
 
@@ -240,13 +273,13 @@ void recalculate_root_clocks(void)
 }
 
 /**
- * clk_init_one - initialize any fields in the struct clk before clk init
+ * clk_preinit - initialize any fields in the struct clk before clk init
  * @clk: struct clk * to initialize
  *
  * Initialize any struct clk fields needed before normal clk initialization
  * can run.  No return value.
  */
-void clk_init_one(struct clk *clk)
+void clk_preinit(struct clk *clk)
 {
         INIT_LIST_HEAD(&clk->children);
 }
diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 433021f3d7cc..ebcf006406f9 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -2,6 +2,10 @@
  * linux/arch/arm/plat-omap/common.c
  *
  * Code common to all OMAP machines.
+ * The file is created by Tony Lindgren <tony@atomide.com>
+ *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
@@ -11,7 +15,6 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/delay.h>
-#include <linux/pm.h>
 #include <linux/console.h>
 #include <linux/serial.h>
 #include <linux/tty.h>
@@ -175,25 +178,70 @@ console_initcall(omap_add_serial_console);
  * but systems won't necessarily want to spend resources that way.
  */
 
-#if defined(CONFIG_ARCH_OMAP16XX)
-#define TIMER_32K_SYNCHRONIZED          0xfffbc410
-#elif defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
-#define TIMER_32K_SYNCHRONIZED          (OMAP2_32KSYNCT_BASE + 0x10)
-#endif
+#define OMAP16XX_TIMER_32K_SYNCHRONIZED         0xfffbc410
 
-#ifdef  TIMER_32K_SYNCHRONIZED
+#if !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX))
 
 #include <linux/clocksource.h>
 
-static cycle_t omap_32k_read(struct clocksource *cs)
+#ifdef CONFIG_ARCH_OMAP16XX
+static cycle_t omap16xx_32k_read(struct clocksource *cs)
+{
+        return omap_readl(OMAP16XX_TIMER_32K_SYNCHRONIZED);
+}
+#else
+#define omap16xx_32k_read       NULL
+#endif
+
+#ifdef CONFIG_ARCH_OMAP2420
+static cycle_t omap2420_32k_read(struct clocksource *cs)
+{
+        return omap_readl(OMAP2420_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap2420_32k_read       NULL
+#endif
+
+#ifdef CONFIG_ARCH_OMAP2430
+static cycle_t omap2430_32k_read(struct clocksource *cs)
+{
+        return omap_readl(OMAP2430_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap2430_32k_read       NULL
+#endif
+
+#ifdef CONFIG_ARCH_OMAP34XX
+static cycle_t omap34xx_32k_read(struct clocksource *cs)
+{
+        return omap_readl(OMAP3430_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap34xx_32k_read       NULL
+#endif
+
+#ifdef CONFIG_ARCH_OMAP4
+static cycle_t omap44xx_32k_read(struct clocksource *cs)
 {
-        return omap_readl(TIMER_32K_SYNCHRONIZED);
+        return omap_readl(OMAP4430_32KSYNCT_BASE + 0x10);
+}
+#else
+#define omap44xx_32k_read       NULL
+#endif
+
+/*
+ * Kernel assumes that sched_clock can be called early but may not have
+ * things ready yet.
+ */
+static cycle_t omap_32k_read_dummy(struct clocksource *cs)
+{
+        return 0;
 }
 
 static struct clocksource clocksource_32k = {
         .name           = "32k_counter",
         .rating         = 250,
-        .read           = omap_32k_read,
+        .read           = omap_32k_read_dummy,
         .mask           = CLOCKSOURCE_MASK(32),
         .shift          = 10,
         .flags          = CLOCK_SOURCE_IS_CONTINUOUS,
@@ -207,7 +255,7 @@ unsigned long long sched_clock(void)
 {
         unsigned long long ret;
 
-        ret = (unsigned long long)omap_32k_read(&clocksource_32k);
+        ret = (unsigned long long)clocksource_32k.read(&clocksource_32k);
         ret = (ret * clocksource_32k.mult_orig) >> clocksource_32k.shift;
         return ret;
 }
@@ -220,6 +268,19 @@ static int __init omap_init_clocksource_32k(void)
         if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
                 struct clk *sync_32k_ick;
 
+                if (cpu_is_omap16xx())
+                        clocksource_32k.read = omap16xx_32k_read;
+                else if (cpu_is_omap2420())
+                        clocksource_32k.read = omap2420_32k_read;
+                else if (cpu_is_omap2430())
+                        clocksource_32k.read = omap2430_32k_read;
+                else if (cpu_is_omap34xx())
+                        clocksource_32k.read = omap34xx_32k_read;
+                else if (cpu_is_omap44xx())
+                        clocksource_32k.read = omap44xx_32k_read;
+                else
+                        return -ENODEV;
+
                 sync_32k_ick = clk_get(NULL, "omap_32ksync_ick");
                 if (sync_32k_ick)
                         clk_enable(sync_32k_ick);
@@ -234,15 +295,13 @@ static int __init omap_init_clocksource_32k(void)
 }
 arch_initcall(omap_init_clocksource_32k);
 
-#endif  /* TIMER_32K_SYNCHRONIZED */
+#endif  /* !(defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP15XX)) */
 
 /* Global address base setup code */
 
 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
 
-static struct omap_globals *omap2_globals;
-
-static void __init __omap2_set_globals(void)
+static void __init __omap2_set_globals(struct omap_globals *omap2_globals)
 {
         omap2_set_globals_tap(omap2_globals);
         omap2_set_globals_sdrc(omap2_globals);
@@ -266,8 +325,7 @@ static struct omap_globals omap242x_globals = {
 
 void __init omap2_set_globals_242x(void)
 {
-        omap2_globals = &omap242x_globals;
-        __omap2_set_globals();
+        __omap2_set_globals(&omap242x_globals);
 }
 #endif
 
@@ -285,8 +343,7 @@ static struct omap_globals omap243x_globals = {
 
 void __init omap2_set_globals_243x(void)
 {
-        omap2_globals = &omap243x_globals;
-        __omap2_set_globals();
+        __omap2_set_globals(&omap243x_globals);
 }
 #endif
 
@@ -304,8 +361,23 @@ static struct omap_globals omap343x_globals = {
 
 void __init omap2_set_globals_343x(void)
 {
-        omap2_globals = &omap343x_globals;
-        __omap2_set_globals();
+        __omap2_set_globals(&omap343x_globals);
+}
+#endif
+
+#if defined(CONFIG_ARCH_OMAP4)
+static struct omap_globals omap4_globals = {
+        .class  = OMAP443X_CLASS,
+        .tap    = OMAP2_IO_ADDRESS(0x4830a000),
+        .ctrl   = OMAP2_IO_ADDRESS(OMAP443X_CTRL_BASE),
+        .prm    = OMAP2_IO_ADDRESS(OMAP4430_PRM_BASE),
+        .cm     = OMAP2_IO_ADDRESS(OMAP4430_CM_BASE),
+};
+
+void __init omap2_set_globals_443x(void)
+{
+        omap2_set_globals_tap(&omap4_globals);
+        omap2_set_globals_control(&omap4_globals);
 }
 #endif
 
diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
index 87fb7ff41794..a64b692a1bfe 100644
--- a/arch/arm/plat-omap/devices.c
+++ b/arch/arm/plat-omap/devices.c
@@ -311,6 +311,8 @@ static void omap_init_wdt(void)
                 wdt_resources[0].start = 0x49016000; /* WDT2 */
         else if (cpu_is_omap343x())
                 wdt_resources[0].start = 0x48314000; /* WDT2 */
+        else if (cpu_is_omap44xx())
+                wdt_resources[0].start = 0x4a314000;
         else
                 return;
 
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 7fc8c045ad5d..def14ec265b3 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -10,6 +10,9 @@
  * Merged to support both OMAP1 and OMAP2 by Tony Lindgren <tony@atomide.com>
  * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc.
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * Support functions for the OMAP internal DMA channels.
  *
  * This program is free software; you can redistribute it and/or modify
@@ -310,41 +313,62 @@ EXPORT_SYMBOL(omap_set_dma_transfer_params);
 
 void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color)
 {
-        u16 w;
-
         BUG_ON(omap_dma_in_1510_mode());
 
-        if (cpu_class_is_omap2()) {
-                REVISIT_24XX();
-                return;
-        }
+        if (cpu_class_is_omap1()) {
+                u16 w;
 
-        w = dma_read(CCR2(lch));
-        w &= ~0x03;
+                w = dma_read(CCR2(lch));
+                w &= ~0x03;
 
-        switch (mode) {
-        case OMAP_DMA_CONSTANT_FILL:
-                w |= 0x01;
-                break;
-        case OMAP_DMA_TRANSPARENT_COPY:
-                w |= 0x02;
-                break;
-        case OMAP_DMA_COLOR_DIS:
-                break;
-        default:
-                BUG();
+                switch (mode) {
+                case OMAP_DMA_CONSTANT_FILL:
+                        w |= 0x01;
+                        break;
+                case OMAP_DMA_TRANSPARENT_COPY:
+                        w |= 0x02;
+                        break;
+                case OMAP_DMA_COLOR_DIS:
+                        break;
+                default:
+                        BUG();
+                }
+                dma_write(w, CCR2(lch));
+
+                w = dma_read(LCH_CTRL(lch));
+                w &= ~0x0f;
+                /* Default is channel type 2D */
+                if (mode) {
+                        dma_write((u16)color, COLOR_L(lch));
+                        dma_write((u16)(color >> 16), COLOR_U(lch));
+                        w |= 1;         /* Channel type G */
+                }
+                dma_write(w, LCH_CTRL(lch));
         }
-        dma_write(w, CCR2(lch));
 
-        w = dma_read(LCH_CTRL(lch));
-        w &= ~0x0f;
-        /* Default is channel type 2D */
-        if (mode) {
-                dma_write((u16)color, COLOR_L(lch));
-                dma_write((u16)(color >> 16), COLOR_U(lch));
-                w |= 1;         /* Channel type G */
+        if (cpu_class_is_omap2()) {
+                u32 val;
+
+                val = dma_read(CCR(lch));
+                val &= ~((1 << 17) | (1 << 16));
+
+                switch (mode) {
+                case OMAP_DMA_CONSTANT_FILL:
+                        val |= 1 << 16;
+                        break;
+                case OMAP_DMA_TRANSPARENT_COPY:
+                        val |= 1 << 17;
+                        break;
+                case OMAP_DMA_COLOR_DIS:
+                        break;
+                default:
+                        BUG();
+                }
+                dma_write(val, CCR(lch));
+
+                color &= 0xffffff;
+                dma_write(color, COLOR(lch));
         }
-        dma_write(w, LCH_CTRL(lch));
 }
 EXPORT_SYMBOL(omap_set_dma_color_mode);
 
@@ -851,7 +875,7 @@ omap_dma_set_prio_lch(int lch, unsigned char read_prio,
         }
         l = dma_read(CCR(lch));
         l &= ~((1 << 6) | (1 << 26));
-        if (cpu_is_omap2430() || cpu_is_omap34xx())
+        if (cpu_is_omap2430() || cpu_is_omap34xx() ||  cpu_is_omap44xx())
                 l |= ((read_prio & 0x1) << 6) | ((write_prio & 0x1) << 26);
         else
                 l |= ((read_prio & 0x1) << 6);
@@ -1199,7 +1223,7 @@ static void create_dma_lch_chain(int lch_head, int lch_queue)
  *           Failure: -EINVAL/-ENOMEM
  */
 int omap_request_dma_chain(int dev_id, const char *dev_name,
-                           void (*callback) (int chain_id, u16 ch_status,
+                           void (*callback) (int lch, u16 ch_status,
                                              void *data),
                            int *chain_id, int no_of_chans, int chain_mode,
                            struct omap_dma_channel_params params)
@@ -1823,7 +1847,8 @@ static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id)
 #define omap1_dma_irq_handler   NULL
 #endif
 
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                        defined(CONFIG_ARCH_OMAP4)
 
 static int omap2_dma_handle_ch(int ch)
 {
@@ -2318,6 +2343,9 @@ static int __init omap_init_dma(void)
         } else if (cpu_is_omap34xx()) {
                 omap_dma_base = IO_ADDRESS(OMAP34XX_DMA4_BASE);
                 dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
+        } else if (cpu_is_omap44xx()) {
+                omap_dma_base = IO_ADDRESS(OMAP44XX_DMA4_BASE);
+                dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
         } else {
                 pr_err("DMA init failed for unsupported omap\n");
                 return -ENODEV;
@@ -2416,12 +2444,18 @@ static int __init omap_init_dma(void)
                 }
         }
 
-        if (cpu_is_omap2430() || cpu_is_omap34xx())
+        if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx())
                 omap_dma_set_global_params(DMA_DEFAULT_ARB_RATE,
                                 DMA_DEFAULT_FIFO_DEPTH, 0);
 
-        if (cpu_class_is_omap2())
-                setup_irq(INT_24XX_SDMA_IRQ0, &omap24xx_dma_irq);
+        if (cpu_class_is_omap2()) {
+                int irq;
+                if (cpu_is_omap44xx())
+                        irq = INT_44XX_SDMA_IRQ0;
+                else
+                        irq = INT_24XX_SDMA_IRQ0;
+                setup_irq(irq, &omap24xx_dma_irq);
+        }
 
         /* FIXME: Update LCD DMA to work on 24xx */
         if (cpu_class_is_omap1()) {
diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index 55bb99631292..7f50b6103dee 100644
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -7,6 +7,9 @@
  * OMAP2 support by Juha Yrjola
  * API improvements and OMAP2 clock framework support by Timo Teras
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2 of the License, or (at your
@@ -150,7 +153,8 @@
 struct omap_dm_timer {
         unsigned long phys_base;
         int irq;
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                        defined(CONFIG_ARCH_OMAP4)
         struct clk *iclk, *fclk;
 #endif
         void __iomem *io_base;
@@ -169,6 +173,9 @@ struct omap_dm_timer {
 #define omap3_dm_timers                 NULL
 #define omap3_dm_source_names           NULL
 #define omap3_dm_source_clocks          NULL
+#define omap4_dm_timers                 NULL
+#define omap4_dm_source_names           NULL
+#define omap4_dm_source_clocks          NULL
 
 static struct omap_dm_timer omap1_dm_timers[] = {
         { .phys_base = 0xfffb1400, .irq = INT_1610_GPTIMER1 },
@@ -191,6 +198,9 @@ static const int dm_timer_count = ARRAY_SIZE(omap1_dm_timers);
 #define omap3_dm_timers                 NULL
 #define omap3_dm_source_names           NULL
 #define omap3_dm_source_clocks          NULL
+#define omap4_dm_timers                 NULL
+#define omap4_dm_source_names           NULL
+#define omap4_dm_source_clocks          NULL
 
 static struct omap_dm_timer omap2_dm_timers[] = {
         { .phys_base = 0x48028000, .irq = INT_24XX_GPTIMER1 },
@@ -214,7 +224,7 @@ static const char *omap2_dm_source_names[] __initdata = {
         NULL
 };
 
-static struct clk **omap2_dm_source_clocks[3];
+static struct clk *omap2_dm_source_clocks[3];
 static const int dm_timer_count = ARRAY_SIZE(omap2_dm_timers);
 
 #elif defined(CONFIG_ARCH_OMAP3)
@@ -225,6 +235,9 @@ static const int dm_timer_count = ARRAY_SIZE(omap2_dm_timers);
 #define omap2_dm_timers                 NULL
 #define omap2_dm_source_names           NULL
 #define omap2_dm_source_clocks          NULL
+#define omap4_dm_timers                 NULL
+#define omap4_dm_source_names           NULL
+#define omap4_dm_source_clocks          NULL
 
 static struct omap_dm_timer omap3_dm_timers[] = {
         { .phys_base = 0x48318000, .irq = INT_24XX_GPTIMER1 },
@@ -247,9 +260,43 @@ static const char *omap3_dm_source_names[] __initdata = {
         NULL
 };
 
-static struct clk **omap3_dm_source_clocks[2];
+static struct clk *omap3_dm_source_clocks[2];
 static const int dm_timer_count = ARRAY_SIZE(omap3_dm_timers);
 
+#elif defined(CONFIG_ARCH_OMAP4)
+
+#define omap_dm_clk_enable(x)           clk_enable(x)
+#define omap_dm_clk_disable(x)          clk_disable(x)
+#define omap1_dm_timers                 NULL
+#define omap2_dm_timers                 NULL
+#define omap2_dm_source_names           NULL
+#define omap2_dm_source_clocks          NULL
+#define omap3_dm_timers                 NULL
+#define omap3_dm_source_names           NULL
+#define omap3_dm_source_clocks          NULL
+
+static struct omap_dm_timer omap4_dm_timers[] = {
+        { .phys_base = 0x4a318000, .irq = INT_44XX_GPTIMER1 },
+        { .phys_base = 0x48032000, .irq = INT_44XX_GPTIMER2 },
+        { .phys_base = 0x48034000, .irq = INT_44XX_GPTIMER3 },
+        { .phys_base = 0x48036000, .irq = INT_44XX_GPTIMER4 },
+        { .phys_base = 0x40138000, .irq = INT_44XX_GPTIMER5 },
+        { .phys_base = 0x4013a000, .irq = INT_44XX_GPTIMER6 },
+        { .phys_base = 0x4013a000, .irq = INT_44XX_GPTIMER7 },
+        { .phys_base = 0x4013e000, .irq = INT_44XX_GPTIMER8 },
+        { .phys_base = 0x4803e000, .irq = INT_44XX_GPTIMER9 },
+        { .phys_base = 0x48086000, .irq = INT_44XX_GPTIMER10 },
+        { .phys_base = 0x48088000, .irq = INT_44XX_GPTIMER11 },
+        { .phys_base = 0x4a320000, .irq = INT_44XX_GPTIMER12 },
+};
+static const char *omap4_dm_source_names[] __initdata = {
+        "sys_ck",
+        "omap_32k_fck",
+        NULL
+};
+static struct clk *omap4_dm_source_clocks[2];
+static const int dm_timer_count = ARRAY_SIZE(omap4_dm_timers);
+
 #else
 
 #error OMAP architecture not supported!
@@ -257,7 +304,7 @@ static const int dm_timer_count = ARRAY_SIZE(omap3_dm_timers);
 #endif
 
 static struct omap_dm_timer *dm_timers;
-static char **dm_source_names;
+static const char **dm_source_names;
 static struct clk **dm_source_clocks;
 
 static spinlock_t dm_timer_lock;
@@ -459,7 +506,8 @@ __u32 omap_dm_timer_modify_idlect_mask(__u32 inputmask)
 }
 EXPORT_SYMBOL_GPL(omap_dm_timer_modify_idlect_mask);
 
-#elif defined(CONFIG_ARCH_OMAP2) || defined (CONFIG_ARCH_OMAP3)
+#elif defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                                defined(CONFIG_ARCH_OMAP4)
 
 struct clk *omap_dm_timer_get_fclk(struct omap_dm_timer *timer)
 {
@@ -705,12 +753,16 @@ int __init omap_dm_timer_init(void)
                 dm_timers = omap1_dm_timers;
         else if (cpu_is_omap24xx()) {
                 dm_timers = omap2_dm_timers;
-                dm_source_names = (char **)omap2_dm_source_names;
-                dm_source_clocks = (struct clk **)omap2_dm_source_clocks;
+                dm_source_names = omap2_dm_source_names;
+                dm_source_clocks = omap2_dm_source_clocks;
         } else if (cpu_is_omap34xx()) {
                 dm_timers = omap3_dm_timers;
-                dm_source_names = (char **)omap3_dm_source_names;
-                dm_source_clocks = (struct clk **)omap3_dm_source_clocks;
+                dm_source_names = omap3_dm_source_names;
+                dm_source_clocks = omap3_dm_source_clocks;
+        } else if (cpu_is_omap44xx()) {
+                dm_timers = omap4_dm_timers;
+                dm_source_names = omap4_dm_source_names;
+                dm_source_clocks = omap4_dm_source_clocks;
         }
 
         if (cpu_class_is_omap2())
@@ -723,7 +775,8 @@ int __init omap_dm_timer_init(void)
         for (i = 0; i < dm_timer_count; i++) {
                 timer = &dm_timers[i];
                 timer->io_base = IO_ADDRESS(timer->phys_base);
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                                        defined(CONFIG_ARCH_OMAP4)
                 if (cpu_class_is_omap2()) {
                         char clk_name[16];
                         sprintf(clk_name, "gpt%d_ick", i + 1);
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index ee0b21f5b094..7fd89ba8d3b5 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -6,6 +6,9 @@
  * Copyright (C) 2003-2005 Nokia Corporation
  * Written by Juha Yrjölä <juha.yrjola@nokia.com>
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
@@ -146,6 +149,16 @@
 #define OMAP34XX_GPIO5_BASE             IO_ADDRESS(0x49056000)
 #define OMAP34XX_GPIO6_BASE             IO_ADDRESS(0x49058000)
 
+/*
+ * OMAP44XX  specific GPIO registers
+ */
+#define OMAP44XX_GPIO1_BASE             IO_ADDRESS(0x4a310000)
+#define OMAP44XX_GPIO2_BASE             IO_ADDRESS(0x48055000)
+#define OMAP44XX_GPIO3_BASE             IO_ADDRESS(0x48057000)
+#define OMAP44XX_GPIO4_BASE             IO_ADDRESS(0x48059000)
+#define OMAP44XX_GPIO5_BASE             IO_ADDRESS(0x4805B000)
+#define OMAP44XX_GPIO6_BASE             IO_ADDRESS(0x4805D000)
+
 #define OMAP_MPUIO_VBASE                IO_ADDRESS(OMAP_MPUIO_BASE)
 
 struct gpio_bank {
@@ -153,11 +166,13 @@ struct gpio_bank {
         u16 irq;
         u16 virtual_irq_start;
         int method;
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) ||  \
+                defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
         u32 suspend_wakeup;
         u32 saved_wakeup;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
         u32 non_wakeup_gpios;
         u32 enabled_non_wakeup_gpios;
 
@@ -251,6 +266,24 @@ static struct gpio_bank gpio_bank_34xx[6] = {
 
 #endif
 
+#ifdef CONFIG_ARCH_OMAP4
+static struct gpio_bank gpio_bank_44xx[6] = {
+        { OMAP44XX_GPIO1_BASE, INT_44XX_GPIO_BANK1, IH_GPIO_BASE,       \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO2_BASE, INT_44XX_GPIO_BANK2, IH_GPIO_BASE + 32,  \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO3_BASE, INT_44XX_GPIO_BANK3, IH_GPIO_BASE + 64,  \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO4_BASE, INT_44XX_GPIO_BANK4, IH_GPIO_BASE + 96,  \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO5_BASE, INT_44XX_GPIO_BANK5, IH_GPIO_BASE + 128, \
+                METHOD_GPIO_24XX },
+        { OMAP44XX_GPIO6_BASE, INT_44XX_GPIO_BANK6, IH_GPIO_BASE + 160, \
+                METHOD_GPIO_24XX },
+};
+
+#endif
+
 static struct gpio_bank *gpio_bank;
 static int gpio_bank_count;
 
@@ -273,7 +306,7 @@ static inline struct gpio_bank *get_gpio_bank(int gpio)
         }
         if (cpu_is_omap24xx())
                 return &gpio_bank[gpio >> 5];
-        if (cpu_is_omap34xx())
+        if (cpu_is_omap34xx() || cpu_is_omap44xx())
                 return &gpio_bank[gpio >> 5];
         BUG();
         return NULL;
@@ -285,7 +318,7 @@ static inline int get_gpio_index(int gpio)
                 return gpio & 0x1f;
         if (cpu_is_omap24xx())
                 return gpio & 0x1f;
-        if (cpu_is_omap34xx())
+        if (cpu_is_omap34xx() || cpu_is_omap44xx())
                 return gpio & 0x1f;
         return gpio & 0x0f;
 }
@@ -307,7 +340,7 @@ static inline int gpio_valid(int gpio)
                 return 0;
         if (cpu_is_omap24xx() && gpio < 128)
                 return 0;
-        if (cpu_is_omap34xx() && gpio < 192)
+        if ((cpu_is_omap34xx() || cpu_is_omap44xx()) && gpio < 192)
                 return 0;
         return -1;
 }
@@ -353,7 +386,8 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
                 reg += OMAP850_GPIO_DIR_CONTROL;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 reg += OMAP24XX_GPIO_OE;
                 break;
@@ -425,7 +459,8 @@ static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
                         l &= ~(1 << gpio);
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 if (enable)
                         reg += OMAP24XX_GPIO_SETDATAOUT;
@@ -476,7 +511,8 @@ static int __omap_get_gpio_datain(int gpio)
                 reg += OMAP850_GPIO_DATA_INPUT;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 reg += OMAP24XX_GPIO_DATAIN;
                 break;
@@ -520,7 +556,7 @@ void omap_set_gpio_debounce(int gpio, int enable)
         else
                 goto done;
 
-        if (cpu_is_omap34xx()) {
+        if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
                 if (enable)
                         clk_enable(bank->dbck);
                 else
@@ -550,7 +586,8 @@ void omap_set_gpio_debounce_time(int gpio, int enc_time)
 }
 EXPORT_SYMBOL(omap_set_gpio_debounce_time);
 
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
 static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio,
                                                 int trigger)
 {
@@ -660,7 +697,8 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger)
                         goto bad;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 set_24xx_gpio_triggering(bank, gpio, trigger);
                 break;
@@ -745,7 +783,8 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
                 reg += OMAP850_GPIO_INT_STATUS;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 reg += OMAP24XX_GPIO_IRQSTATUS1;
                 break;
@@ -814,7 +853,8 @@ static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank)
                 inv = 1;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 reg += OMAP24XX_GPIO_IRQENABLE1;
                 mask = 0xffffffff;
@@ -887,7 +927,8 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enab
                         l |= gpio_mask;
                 break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 if (enable)
                         reg += OMAP24XX_GPIO_SETIRQENABLE1;
@@ -932,7 +973,8 @@ static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable)
                 spin_unlock_irqrestore(&bank->lock, flags);
                 return 0;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         case METHOD_GPIO_24XX:
                 if (bank->non_wakeup_gpios & (1 << gpio)) {
                         printk(KERN_ERR "Unable to modify wakeup on "
@@ -1017,7 +1059,8 @@ static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
                 __raw_writel(1 << offset, reg);
         }
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         if (bank->method == METHOD_GPIO_24XX) {
                 /* Disable wake-up during idle for dynamic tick */
                 void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
@@ -1069,7 +1112,8 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
         if (bank->method == METHOD_GPIO_850)
                 isr_reg = bank->base + OMAP850_GPIO_INT_STATUS;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
         if (bank->method == METHOD_GPIO_24XX)
                 isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1;
 #endif
@@ -1346,7 +1390,7 @@ static int gpio_2irq(struct gpio_chip *chip, unsigned offset)
 /*---------------------------------------------------------------------*/
 
 static int initialized;
-#if !defined(CONFIG_ARCH_OMAP3)
+#if !(defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4))
 static struct clk * gpio_ick;
 #endif
 
@@ -1359,7 +1403,7 @@ static struct clk * gpio5_ick;
 static struct clk * gpio5_fck;
 #endif
 
-#if defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
 static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];
 #endif
 
@@ -1419,8 +1463,8 @@ static int __init _omap_gpio_init(void)
         }
 #endif
 
-#if defined(CONFIG_ARCH_OMAP3)
-        if (cpu_is_omap34xx()) {
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
+        if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
                 for (i = 0; i < OMAP34XX_NR_GPIOS; i++) {
                         sprintf(clk_name, "gpio%d_ick", i + 1);
                         gpio_iclks[i] = clk_get(NULL, clk_name);
@@ -1497,6 +1541,17 @@ static int __init _omap_gpio_init(void)
                         (rev >> 4) & 0x0f, rev & 0x0f);
         }
 #endif
+#ifdef CONFIG_ARCH_OMAP4
+        if (cpu_is_omap44xx()) {
+                int rev;
+
+                gpio_bank_count = OMAP34XX_NR_GPIOS;
+                gpio_bank = gpio_bank_44xx;
+                rev = __raw_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION);
+                printk(KERN_INFO "OMAP44xx GPIO hardware version %d.%d\n",
+                        (rev >> 4) & 0x0f, rev & 0x0f);
+        }
+#endif
         for (i = 0; i < gpio_bank_count; i++) {
                 int j, gpio_count = 16;
 
@@ -1520,7 +1575,8 @@ static int __init _omap_gpio_init(void)
                         gpio_count = 32; /* 730 has 32-bit GPIOs */
                 }
 
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
                 if (bank->method == METHOD_GPIO_24XX) {
                         static const u32 non_wakeup_gpios[] = {
                                 0xe203ffc0, 0x08700040
@@ -1577,7 +1633,7 @@ static int __init _omap_gpio_init(void)
                 set_irq_chained_handler(bank->irq, gpio_irq_handler);
                 set_irq_data(bank->irq, bank);
 
-                if (cpu_is_omap34xx()) {
+                if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
                         sprintf(clk_name, "gpio%d_dbck", i + 1);
                         bank->dbck = clk_get(NULL, clk_name);
                         if (IS_ERR(bank->dbck))
@@ -1599,7 +1655,8 @@ static int __init _omap_gpio_init(void)
         return 0;
 }
 
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
+                defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
 static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
 {
         int i;
@@ -1622,7 +1679,8 @@ static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
                         wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
                         break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
                 case METHOD_GPIO_24XX:
                         wake_status = bank->base + OMAP24XX_GPIO_WAKE_EN;
                         wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
@@ -1663,7 +1721,8 @@ static int omap_gpio_resume(struct sys_device *dev)
                         wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
                         break;
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                 case METHOD_GPIO_24XX:
                         wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
                         wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA;
@@ -1695,7 +1754,8 @@ static struct sys_device omap_gpio_device = {
 
 #endif
 
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
 
 static int workaround_enabled;
 
@@ -1711,7 +1771,8 @@ void omap2_gpio_prepare_for_retention(void)
 
                 if (!(bank->enabled_non_wakeup_gpios))
                         continue;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                                defined(CONFIG_ARCH_OMAP4)
                 bank->saved_datain = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN);
                 l1 = __raw_readl(bank->base + OMAP24XX_GPIO_FALLINGDETECT);
                 l2 = __raw_readl(bank->base + OMAP24XX_GPIO_RISINGDETECT);
@@ -1720,7 +1781,8 @@ void omap2_gpio_prepare_for_retention(void)
                 bank->saved_risingdetect = l2;
                 l1 &= ~bank->enabled_non_wakeup_gpios;
                 l2 &= ~bank->enabled_non_wakeup_gpios;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                 __raw_writel(l1, bank->base + OMAP24XX_GPIO_FALLINGDETECT);
                 __raw_writel(l2, bank->base + OMAP24XX_GPIO_RISINGDETECT);
 #endif
@@ -1745,7 +1807,8 @@ void omap2_gpio_resume_after_retention(void)
 
                 if (!(bank->enabled_non_wakeup_gpios))
                         continue;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                 __raw_writel(bank->saved_fallingdetect,
                                  bank->base + OMAP24XX_GPIO_FALLINGDETECT);
                 __raw_writel(bank->saved_risingdetect,
@@ -1755,14 +1818,16 @@ void omap2_gpio_resume_after_retention(void)
                  * state.  If so, generate an IRQ by software.  This is
                  * horribly racy, but it's the best we can do to work around
                  * this silicon bug. */
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                 l = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN);
 #endif
                 l ^= bank->saved_datain;
                 l &= bank->non_wakeup_gpios;
                 if (l) {
                         u32 old0, old1;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
                         old0 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0);
                         old1 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1);
                         __raw_writel(old0 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT0);
@@ -1798,7 +1863,8 @@ static int __init omap_gpio_sysinit(void)
 
         mpuio_init();
 
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
+                defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
         if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
                 if (ret == 0) {
                         ret = sysdev_class_register(&omap_gpio_sysclass);
@@ -1887,7 +1953,7 @@ static int dbg_gpio_show(struct seq_file *s, void *unused)
 
                         irqstat = irq_desc[irq].status;
 #if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) ||   \
-                defined(CONFIG_ARCH_OMAP34XX)
+                defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
                         if (is_in && ((bank->suspend_wakeup & mask)
                                         || irqstat & IRQ_TYPE_SENSE_MASK)) {
                                 char    *trigger = NULL;
diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c
index a303071d5e36..8b848391f0c8 100644
--- a/arch/arm/plat-omap/i2c.c
+++ b/arch/arm/plat-omap/i2c.c
@@ -5,7 +5,7 @@
  *
  * Copyright (C) 2007 Nokia Corporation.
  *
- * Contact: Jarkko Nikula <jarkko.nikula@nokia.com>
+ * Contact: Jarkko Nikula <jhnikula@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
diff --git a/arch/arm/plat-omap/include/mach/clock.h b/arch/arm/plat-omap/include/mach/clock.h
index 073a2c5569f0..f9f65e1ba3f1 100644
--- a/arch/arm/plat-omap/include/mach/clock.h
+++ b/arch/arm/plat-omap/include/mach/clock.h
@@ -22,7 +22,8 @@ struct clkops {
         void                    (*disable)(struct clk *);
 };
 
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                defined(CONFIG_ARCH_OMAP4)
 
 struct clksel_rate {
         u32                     val;
@@ -51,7 +52,7 @@ struct dpll_data {
         u8                      max_divider;
         u32                     max_tolerance;
         u16                     max_multiplier;
-#  if defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
         u8                      modes;
         void __iomem            *autoidle_reg;
         void __iomem            *idlest_reg;
@@ -83,7 +84,8 @@ struct clk {
         void                    (*init)(struct clk *);
         __u8                    enable_bit;
         __s8                    usecount;
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                defined(CONFIG_ARCH_OMAP4)
         u8                      fixed_div;
         void __iomem            *clksel_reg;
         u32                     clksel_mask;
@@ -119,7 +121,7 @@ struct clk_functions {
 extern unsigned int mpurate;
 
 extern int clk_init(struct clk_functions *custom_clocks);
-extern void clk_init_one(struct clk *clk);
+extern void clk_preinit(struct clk *clk);
 extern int clk_register(struct clk *clk);
 extern void clk_reparent(struct clk *child, struct clk *parent);
 extern void clk_unregister(struct clk *clk);
diff --git a/arch/arm/plat-omap/include/mach/common.h b/arch/arm/plat-omap/include/mach/common.h
index 0ecf36deb17b..fdeab421b4dc 100644
--- a/arch/arm/plat-omap/include/mach/common.h
+++ b/arch/arm/plat-omap/include/mach/common.h
@@ -33,8 +33,6 @@ struct sys_timer;
 
 extern void omap_map_common_io(void);
 extern struct sys_timer omap_timer;
-extern void omap_serial_init(void);
-extern void omap_serial_enable_clocks(int enable);
 #if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
 extern int omap_register_i2c_bus(int bus_id, u32 clkrate,
                                  struct i2c_board_info const *info,
@@ -62,6 +60,7 @@ struct omap_globals {
 void omap2_set_globals_242x(void);
 void omap2_set_globals_243x(void);
 void omap2_set_globals_343x(void);
+void omap2_set_globals_443x(void);
 
 /* These get called from omap2_set_globals_xxxx(), do not call these */
 void omap2_set_globals_tap(struct omap_globals *);
diff --git a/arch/arm/plat-omap/include/mach/control.h b/arch/arm/plat-omap/include/mach/control.h
index 269147f3836f..8140dbccb7bc 100644
--- a/arch/arm/plat-omap/include/mach/control.h
+++ b/arch/arm/plat-omap/include/mach/control.h
@@ -1,9 +1,9 @@
 /*
  * arch/arm/plat-omap/include/mach/control.h
  *
- * OMAP2/3 System Control Module definitions
+ * OMAP2/3/4 System Control Module definitions
  *
- * Copyright (C) 2007-2008 Texas Instruments, Inc.
+ * Copyright (C) 2007-2009 Texas Instruments, Inc.
  * Copyright (C) 2007-2008 Nokia Corporation
  *
  * Written by Paul Walmsley
@@ -144,6 +144,10 @@
 #define OMAP343X_CONTROL_PBIAS_LITE     (OMAP2_CONTROL_GENERAL + 0x02b0)
 #define OMAP343X_CONTROL_TEMP_SENSOR    (OMAP2_CONTROL_GENERAL + 0x02b4)
 
+/* 34xx D2D idle-related pins, handled by PM core */
+#define OMAP3_PADCONF_SAD2D_MSTANDBY   0x250
+#define OMAP3_PADCONF_SAD2D_IDLEACK    0x254
+
 /*
  * REVISIT: This list of registers is not comprehensive - there are more
  * that should be added.
@@ -189,8 +193,18 @@
 #define OMAP2_PBIASLITEPWRDNZ0          (1 << 1)
 #define OMAP2_PBIASLITEVMODE0           (1 << 0)
 
+/* CONTROL_IVA2_BOOTMOD bits */
+#define OMAP3_IVA2_BOOTMOD_SHIFT        0
+#define OMAP3_IVA2_BOOTMOD_MASK         (0xf << 0)
+#define OMAP3_IVA2_BOOTMOD_IDLE         (0x1 << 0)
+
+/* CONTROL_PADCONF_X bits */
+#define OMAP3_PADCONF_WAKEUPEVENT0      (1 << 15)
+#define OMAP3_PADCONF_WAKEUPENABLE0     (1 << 14)
+
 #ifndef __ASSEMBLY__
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                defined(CONFIG_ARCH_OMAP4)
 extern void __iomem *omap_ctrl_base_get(void);
 extern u8 omap_ctrl_readb(u16 offset);
 extern u16 omap_ctrl_readw(u16 offset);
diff --git a/arch/arm/plat-omap/include/mach/cpu.h b/arch/arm/plat-omap/include/mach/cpu.h
index 98b144252364..fc60c4ebcc28 100644
--- a/arch/arm/plat-omap/include/mach/cpu.h
+++ b/arch/arm/plat-omap/include/mach/cpu.h
@@ -5,8 +5,12 @@
  *
  * Copyright (C) 2004, 2008 Nokia Corporation
  *
+ * Copyright (C) 2009 Texas Instruments.
+ *
  * Written by Tony Lindgren <tony.lindgren@nokia.com>
  *
+ * Added OMAP4 specific defines - Santosh Shilimkar<santosh.shilimkar@ti.com>
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
@@ -155,6 +159,8 @@ IS_OMAP_SUBCLASS(343x, 0x343)
 #define cpu_is_omap243x()               0
 #define cpu_is_omap34xx()               0
 #define cpu_is_omap343x()               0
+#define cpu_is_omap44xx()               0
+#define cpu_is_omap443x()               0
 
 #if defined(MULTI_OMAP1)
 # if defined(CONFIG_ARCH_OMAP730)
@@ -348,12 +354,21 @@ IS_OMAP_TYPE(3430, 0x3430)
 # define cpu_is_omap3430()              is_omap3430()
 #endif
 
+# if defined(CONFIG_ARCH_OMAP4)
+# undef cpu_is_omap44xx
+# undef cpu_is_omap443x
+# define cpu_is_omap44xx()              1
+# define cpu_is_omap443x()              1
+# endif
+
 /* Macros to detect if we have OMAP1 or OMAP2 */
 #define cpu_class_is_omap1()    (cpu_is_omap7xx() || cpu_is_omap15xx() || \
                                 cpu_is_omap16xx())
-#define cpu_class_is_omap2()    (cpu_is_omap24xx() || cpu_is_omap34xx())
+#define cpu_class_is_omap2()    (cpu_is_omap24xx() || cpu_is_omap34xx() || \
+                                cpu_is_omap44xx())
 
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                        defined(CONFIG_ARCH_OMAP4)
 
 /* Various silicon revisions for omap2 */
 #define OMAP242X_CLASS          0x24200024
@@ -370,6 +385,8 @@ IS_OMAP_TYPE(3430, 0x3430)
 #define OMAP3430_REV_ES3_0      0x34303034
 #define OMAP3430_REV_ES3_1      0x34304034
 
+#define OMAP443X_CLASS          0x44300034
+
 /*
  * omap_chip bits
  *
diff --git a/arch/arm/plat-omap/include/mach/debug-macro.S b/arch/arm/plat-omap/include/mach/debug-macro.S
index 1b11f5c6a2d9..ac24050e3416 100644
--- a/arch/arm/plat-omap/include/mach/debug-macro.S
+++ b/arch/arm/plat-omap/include/mach/debug-macro.S
@@ -36,7 +36,7 @@
                 add     \rx, \rx, #0x00004000   @ UART 3
 #endif
 
-#elif   CONFIG_ARCH_OMAP3
+#elif defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
                 moveq   \rx, #0x48000000        @ physical base address
                 movne   \rx, #0xd8000000        @ virtual base
                 orr     \rx, \rx, #0x0006a000
diff --git a/arch/arm/plat-omap/include/mach/dma.h b/arch/arm/plat-omap/include/mach/dma.h
index 54fe9665b182..8c1eae88737e 100644
--- a/arch/arm/plat-omap/include/mach/dma.h
+++ b/arch/arm/plat-omap/include/mach/dma.h
@@ -48,6 +48,7 @@
 /* Hardware registers for omap2 and omap3 */
 #define OMAP24XX_DMA4_BASE              (L4_24XX_BASE + 0x56000)
 #define OMAP34XX_DMA4_BASE              (L4_34XX_BASE + 0x56000)
+#define OMAP44XX_DMA4_BASE              (L4_44XX_BASE + 0x56000)
 
 #define OMAP_DMA4_REVISION              0x00
 #define OMAP_DMA4_GCR                   0x78
@@ -144,6 +145,7 @@
 #define OMAP_DMA4_CSSA_U(n)             0
 #define OMAP_DMA4_CDSA_L(n)             0
 #define OMAP_DMA4_CDSA_U(n)             0
+#define OMAP1_DMA_COLOR(n)              0
 
 /*----------------------------------------------------------------------------*/
 
@@ -531,7 +533,7 @@ extern int omap_get_dma_index(int lch, int *ei, int *fi);
 /* Chaining APIs */
 #ifndef CONFIG_ARCH_OMAP1
 extern int omap_request_dma_chain(int dev_id, const char *dev_name,
-                                  void (*callback) (int chain_id, u16 ch_status,
+                                  void (*callback) (int lch, u16 ch_status,
                                                     void *data),
                                   int *chain_id, int no_of_chans,
                                   int chain_mode,
diff --git a/arch/arm/plat-omap/include/mach/entry-macro.S b/arch/arm/plat-omap/include/mach/entry-macro.S
index 2276f89671d8..56426ed45ef4 100644
--- a/arch/arm/plat-omap/include/mach/entry-macro.S
+++ b/arch/arm/plat-omap/include/mach/entry-macro.S
@@ -3,6 +3,9 @@
  *
  * Low-level IRQ helper macros for OMAP-based platforms
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * This file is licensed under  the terms of the GNU General Public
  * License version 2. This program is licensed "as is" without any
  * warranty of any kind, whether express or implied.
@@ -10,6 +13,7 @@
 #include <mach/hardware.h>
 #include <mach/io.h>
 #include <mach/irqs.h>
+#include <asm/hardware/gic.h>
 
 #if defined(CONFIG_ARCH_OMAP1)
 
@@ -56,15 +60,21 @@
                 .endm
 
 #endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+                        defined(CONFIG_ARCH_OMAP4)
 
-#if defined(CONFIG_ARCH_OMAP24XX)
 #include <mach/omap24xx.h>
-#endif
-#if defined(CONFIG_ARCH_OMAP34XX)
 #include <mach/omap34xx.h>
-#endif
 
+/* REVISIT: This should be set dynamically if CONFIG_MULTI_OMAP2 is selected */
+#if defined(CONFIG_ARCH_OMAP2420) || defined(CONFIG_ARCH_OMAP2430)
+#define OMAP2_VA_IC_BASE                IO_ADDRESS(OMAP24XX_IC_BASE)
+#elif defined(CONFIG_ARCH_OMAP34XX)
+#define OMAP2_VA_IC_BASE                IO_ADDRESS(OMAP34XX_IC_BASE)
+#endif
+#if defined(CONFIG_ARCH_OMAP4)
+#include <mach/omap44xx.h>
+#endif
 #define INTCPS_SIR_IRQ_OFFSET   0x0040          /* Active interrupt offset */
 #define ACTIVEIRQ_MASK          0x7f            /* Active interrupt bits */
 
@@ -77,6 +87,7 @@
                 .macro  arch_ret_to_user, tmp1, tmp2
                 .endm
 
+#ifndef CONFIG_ARCH_OMAP4
                 .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
                 ldr     \base, =OMAP2_VA_IC_BASE
                 ldr     \irqnr, [\base, #0x98] /* IRQ pending reg 1 */
@@ -92,6 +103,68 @@
                 and     \irqnr, \irqnr, #ACTIVEIRQ_MASK /* Clear spurious bits */
 
                 .endm
+#else
+                /*
+                 * The interrupt numbering scheme is defined in the
+                 * interrupt controller spec.  To wit:
+                 *
+                 * Interrupts 0-15 are IPI
+                 * 16-28 are reserved
+                 * 29-31 are local.  We allow 30 to be used for the watchdog.
+                 * 32-1020 are global
+                 * 1021-1022 are reserved
+                 * 1023 is "spurious" (no interrupt)
+                 *
+                 * For now, we ignore all local interrupts so only return an
+                 * interrupt if it's between 30 and 1020.  The test_for_ipi
+                 * routine below will pick up on IPIs.
+                 * A simple read from the controller will tell us the number
+                 * of the highest priority enabled interrupt.
+                 * We then just need to check whether it is in the
+                 * valid range for an IRQ (30-1020 inclusive).
+                 */
+                .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+                ldr     \base, =OMAP44XX_VA_GIC_CPU_BASE
+                ldr     \irqstat, [\base, #GIC_CPU_INTACK]
+
+                ldr     \tmp, =1021
+
+                bic     \irqnr, \irqstat, #0x1c00
+
+                cmp     \irqnr, #29
+                cmpcc   \irqnr, \irqnr
+                cmpne   \irqnr, \tmp
+                cmpcs   \irqnr, \irqnr
+                .endm
+
+                /* We assume that irqstat (the raw value of the IRQ acknowledge
+                 * register) is preserved from the macro above.
+                 * If there is an IPI, we immediately signal end of interrupt
+                 * on the controller, since this requires the original irqstat
+                 * value which we won't easily be able to recreate later.
+                 */
+
+                .macro test_for_ipi, irqnr, irqstat, base, tmp
+                bic     \irqnr, \irqstat, #0x1c00
+                cmp     \irqnr, #16
+                it      cc
+                strcc   \irqstat, [\base, #GIC_CPU_EOI]
+                it      cs
+                cmpcs   \irqnr, \irqnr
+                .endm
+
+                /* As above, this assumes that irqstat and base are preserved */
+
+                .macro test_for_ltirq, irqnr, irqstat, base, tmp
+                bic     \irqnr, \irqstat, #0x1c00
+                mov     \tmp, #0
+                cmp     \irqnr, #29
+                itt     eq
+                moveq   \tmp, #1
+                streq   \irqstat, [\base, #GIC_CPU_EOI]
+                cmp     \tmp, #0
+                .endm
+#endif
 
                 .macro  irq_prio_table
                 .endm
diff --git a/arch/arm/plat-omap/include/mach/gpmc-smc91x.h b/arch/arm/plat-omap/include/mach/gpmc-smc91x.h
new file mode 100644
index 000000000000..b64fbee4d567
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/gpmc-smc91x.h
@@ -0,0 +1,42 @@
+/*
+ * arch/arm/plat-omap/include/mach/gpmc-smc91x.h
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_OMAP_GPMC_SMC91X_H__
+
+#define GPMC_TIMINGS_SMC91C96   (1 << 4)
+#define GPMC_MUX_ADD_DATA       (1 << 5) /* GPMC_CONFIG1_MUXADDDATA */
+#define GPMC_READ_MON           (1 << 6) /* GPMC_CONFIG1_WAIT_READ_MON */
+#define GPMC_WRITE_MON          (1 << 7) /* GPMC_CONFIG1_WAIT_WRITE_MON */
+
+struct omap_smc91x_platform_data {
+        int     cs;
+        int     gpio_irq;
+        int     gpio_pwrdwn;
+        int     gpio_reset;
+        int     wait_pin;       /* Optional GPMC_CONFIG1_WAITPINSELECT */
+        u32     flags;
+        int     (*retime)(void);
+};
+
+#if defined(CONFIG_SMC91X) || \
+        defined(CONFIG_SMC91X_MODULE)
+
+extern void gpmc_smc91x_init(struct omap_smc91x_platform_data *d);
+
+#else
+
+#define board_smc91x_data       NULL
+
+static inline void gpmc_smc91x_init(struct omap_smc91x_platform_data *d)
+{
+}
+
+#endif
+#endif
diff --git a/arch/arm/plat-omap/include/mach/hardware.h b/arch/arm/plat-omap/include/mach/hardware.h
index 3dc423ed3e80..26c1fbff08aa 100644
--- a/arch/arm/plat-omap/include/mach/hardware.h
+++ b/arch/arm/plat-omap/include/mach/hardware.h
@@ -285,5 +285,6 @@
 #include "omap16xx.h"
 #include "omap24xx.h"
 #include "omap34xx.h"
+#include "omap44xx.h"
 
 #endif  /* __ASM_ARCH_OMAP_HARDWARE_H */
diff --git a/arch/arm/plat-omap/include/mach/hwa742.h b/arch/arm/plat-omap/include/mach/hwa742.h
index 577f492f2d3c..886248d32b49 100644
--- a/arch/arm/plat-omap/include/mach/hwa742.h
+++ b/arch/arm/plat-omap/include/mach/hwa742.h
@@ -2,10 +2,6 @@
 #define _HWA742_H
 
 struct hwa742_platform_data {
-        void            (*power_up)(struct device *dev);
-        void            (*power_down)(struct device *dev);
-        unsigned long   (*get_clock_rate)(struct device *dev);
-
         unsigned        te_connected:1;
 };
 
diff --git a/arch/arm/plat-omap/include/mach/io.h b/arch/arm/plat-omap/include/mach/io.h
index 0610d7e2b3d7..3b2814720569 100644
--- a/arch/arm/plat-omap/include/mach/io.h
+++ b/arch/arm/plat-omap/include/mach/io.h
@@ -6,6 +6,9 @@
  * Copied from arch/arm/mach-sa1100/include/mach/io.h
  * Copyright (C) 1997-1999 Russell King
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
  * Free Software Foundation; either version 2 of the License, or (at your
@@ -157,6 +160,40 @@
 #define DSP_MMU_34XX_VIRT       0xe2000000
 #define DSP_MMU_34XX_SIZE       SZ_4K
 
+
+#elif defined(CONFIG_ARCH_OMAP4)
+/* We map both L3 and L4 on OMAP4 */
+#define L3_44XX_PHYS            L3_44XX_BASE
+#define L3_44XX_VIRT            0xd4000000
+#define L3_44XX_SIZE            SZ_1M
+
+#define L4_44XX_PHYS            L4_44XX_BASE
+#define L4_44XX_VIRT            0xda000000
+#define L4_44XX_SIZE            SZ_4M
+
+
+#define L4_WK_44XX_PHYS         L4_WK_44XX_BASE
+#define L4_WK_44XX_VIRT         0xda300000
+#define L4_WK_44XX_SIZE         SZ_1M
+
+#define L4_PER_44XX_PHYS        L4_PER_44XX_BASE
+#define L4_PER_44XX_VIRT        0xd8000000
+#define L4_PER_44XX_SIZE        SZ_4M
+
+#define L4_EMU_44XX_PHYS        L4_EMU_44XX_BASE
+#define L4_EMU_44XX_VIRT        0xe4000000
+#define L4_EMU_44XX_SIZE        SZ_64M
+
+#define OMAP44XX_GPMC_PHYS      OMAP44XX_GPMC_BASE
+#define OMAP44XX_GPMC_VIRT      0xe0000000
+#define OMAP44XX_GPMC_SIZE      SZ_1M
+
+
+#define IO_OFFSET               0x90000000
+#define __IO_ADDRESS(pa)        ((pa) + IO_OFFSET)/* Works for L3 and L4 */
+#define __OMAP2_IO_ADDRESS(pa)  ((pa) + IO_OFFSET)/* Works for L3 and L4 */
+#define io_v2p(va)              ((va) - IO_OFFSET)/* Works for L3 and L4 */
+
 #endif
 
 #define IO_ADDRESS(pa)          IOMEM(__IO_ADDRESS(pa))
diff --git a/arch/arm/plat-omap/include/mach/iommu.h b/arch/arm/plat-omap/include/mach/iommu.h
new file mode 100644
index 000000000000..769b00b4c34a
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/iommu.h
@@ -0,0 +1,168 @@
+/*
+ * omap iommu: main structures
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __MACH_IOMMU_H
+#define __MACH_IOMMU_H
+
+struct iotlb_entry {
+        u32 da;
+        u32 pa;
+        u32 pgsz, prsvd, valid;
+        union {
+                u16 ap;
+                struct {
+                        u32 endian, elsz, mixed;
+                };
+        };
+};
+
+struct iommu {
+        const char      *name;
+        struct module   *owner;
+        struct clk      *clk;
+        void __iomem    *regbase;
+        struct device   *dev;
+
+        unsigned int    refcount;
+        struct mutex    iommu_lock;     /* global for this whole object */
+
+        /*
+         * We don't change iopgd for a situation like pgd for a task,
+         * but share it globally for each iommu.
+         */
+        u32             *iopgd;
+        spinlock_t      page_table_lock; /* protect iopgd */
+
+        int             nr_tlb_entries;
+
+        struct list_head        mmap;
+        struct mutex            mmap_lock; /* protect mmap */
+
+        int (*isr)(struct iommu *obj);
+
+        void *ctx; /* iommu context: registres saved area */
+};
+
+struct cr_regs {
+        union {
+                struct {
+                        u16 cam_l;
+                        u16 cam_h;
+                };
+                u32 cam;
+        };
+        union {
+                struct {
+                        u16 ram_l;
+                        u16 ram_h;
+                };
+                u32 ram;
+        };
+};
+
+struct iotlb_lock {
+        short base;
+        short vict;
+};
+
+/* architecture specific functions */
+struct iommu_functions {
+        unsigned long   version;
+
+        int (*enable)(struct iommu *obj);
+        void (*disable)(struct iommu *obj);
+        u32 (*fault_isr)(struct iommu *obj, u32 *ra);
+
+        void (*tlb_read_cr)(struct iommu *obj, struct cr_regs *cr);
+        void (*tlb_load_cr)(struct iommu *obj, struct cr_regs *cr);
+
+        struct cr_regs *(*alloc_cr)(struct iommu *obj, struct iotlb_entry *e);
+        int (*cr_valid)(struct cr_regs *cr);
+        u32 (*cr_to_virt)(struct cr_regs *cr);
+        void (*cr_to_e)(struct cr_regs *cr, struct iotlb_entry *e);
+        ssize_t (*dump_cr)(struct iommu *obj, struct cr_regs *cr, char *buf);
+
+        u32 (*get_pte_attr)(struct iotlb_entry *e);
+
+        void (*save_ctx)(struct iommu *obj);
+        void (*restore_ctx)(struct iommu *obj);
+        ssize_t (*dump_ctx)(struct iommu *obj, char *buf);
+};
+
+struct iommu_platform_data {
+        const char *name;
+        const char *clk_name;
+        const int nr_tlb_entries;
+};
+
+#if defined(CONFIG_ARCH_OMAP1)
+#error "iommu for this processor not implemented yet"
+#else
+#include <mach/iommu2.h>
+#endif
+
+/*
+ * utilities for super page(16MB, 1MB, 64KB and 4KB)
+ */
+
+#define iopgsz_max(bytes)                       \
+        (((bytes) >= SZ_16M) ? SZ_16M :         \
+         ((bytes) >= SZ_1M)  ? SZ_1M  :         \
+         ((bytes) >= SZ_64K) ? SZ_64K :         \
+         ((bytes) >= SZ_4K)  ? SZ_4K  : 0)
+
+#define bytes_to_iopgsz(bytes)                          \
+        (((bytes) == SZ_16M) ? MMU_CAM_PGSZ_16M :       \
+         ((bytes) == SZ_1M)  ? MMU_CAM_PGSZ_1M  :       \
+         ((bytes) == SZ_64K) ? MMU_CAM_PGSZ_64K :       \
+         ((bytes) == SZ_4K)  ? MMU_CAM_PGSZ_4K  : -1)
+
+#define iopgsz_to_bytes(iopgsz)                         \
+        (((iopgsz) == MMU_CAM_PGSZ_16M) ? SZ_16M :      \
+         ((iopgsz) == MMU_CAM_PGSZ_1M)  ? SZ_1M  :      \
+         ((iopgsz) == MMU_CAM_PGSZ_64K) ? SZ_64K :      \
+         ((iopgsz) == MMU_CAM_PGSZ_4K)  ? SZ_4K  : 0)
+
+#define iopgsz_ok(bytes) (bytes_to_iopgsz(bytes) >= 0)
+
+/*
+ * global functions
+ */
+extern u32 iommu_arch_version(void);
+
+extern void iotlb_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e);
+extern u32 iotlb_cr_to_virt(struct cr_regs *cr);
+
+extern int load_iotlb_entry(struct iommu *obj, struct iotlb_entry *e);
+extern void flush_iotlb_page(struct iommu *obj, u32 da);
+extern void flush_iotlb_range(struct iommu *obj, u32 start, u32 end);
+extern void flush_iotlb_all(struct iommu *obj);
+
+extern int iopgtable_store_entry(struct iommu *obj, struct iotlb_entry *e);
+extern size_t iopgtable_clear_entry(struct iommu *obj, u32 iova);
+
+extern struct iommu *iommu_get(const char *name);
+extern void iommu_put(struct iommu *obj);
+
+extern void iommu_save_ctx(struct iommu *obj);
+extern void iommu_restore_ctx(struct iommu *obj);
+
+extern int install_iommu_arch(const struct iommu_functions *ops);
+extern void uninstall_iommu_arch(const struct iommu_functions *ops);
+
+extern int foreach_iommu_device(void *data,
+                                int (*fn)(struct device *, void *));
+
+extern ssize_t iommu_dump_ctx(struct iommu *obj, char *buf);
+extern size_t dump_tlb_entries(struct iommu *obj, char *buf);
+
+#endif /* __MACH_IOMMU_H */
diff --git a/arch/arm/plat-omap/include/mach/iommu2.h b/arch/arm/plat-omap/include/mach/iommu2.h
new file mode 100644
index 000000000000..10ad05f410e9
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/iommu2.h
@@ -0,0 +1,96 @@
+/*
+ * omap iommu: omap2 architecture specific definitions
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __MACH_IOMMU2_H
+#define __MACH_IOMMU2_H
+
+#include <linux/io.h>
+
+/*
+ * MMU Register offsets
+ */
+#define MMU_REVISION            0x00
+#define MMU_SYSCONFIG           0x10
+#define MMU_SYSSTATUS           0x14
+#define MMU_IRQSTATUS           0x18
+#define MMU_IRQENABLE           0x1c
+#define MMU_WALKING_ST          0x40
+#define MMU_CNTL                0x44
+#define MMU_FAULT_AD            0x48
+#define MMU_TTB                 0x4c
+#define MMU_LOCK                0x50
+#define MMU_LD_TLB              0x54
+#define MMU_CAM                 0x58
+#define MMU_RAM                 0x5c
+#define MMU_GFLUSH              0x60
+#define MMU_FLUSH_ENTRY         0x64
+#define MMU_READ_CAM            0x68
+#define MMU_READ_RAM            0x6c
+#define MMU_EMU_FAULT_AD        0x70
+
+#define MMU_REG_SIZE            256
+
+/*
+ * MMU Register bit definitions
+ */
+#define MMU_LOCK_BASE_SHIFT     10
+#define MMU_LOCK_BASE_MASK      (0x1f << MMU_LOCK_BASE_SHIFT)
+#define MMU_LOCK_BASE(x)        \
+        ((x & MMU_LOCK_BASE_MASK) >> MMU_LOCK_BASE_SHIFT)
+
+#define MMU_LOCK_VICT_SHIFT     4
+#define MMU_LOCK_VICT_MASK      (0x1f << MMU_LOCK_VICT_SHIFT)
+#define MMU_LOCK_VICT(x)        \
+        ((x & MMU_LOCK_VICT_MASK) >> MMU_LOCK_VICT_SHIFT)
+
+#define MMU_CAM_VATAG_SHIFT     12
+#define MMU_CAM_VATAG_MASK \
+        ((~0UL >> MMU_CAM_VATAG_SHIFT) << MMU_CAM_VATAG_SHIFT)
+#define MMU_CAM_P               (1 << 3)
+#define MMU_CAM_V               (1 << 2)
+#define MMU_CAM_PGSZ_MASK       3
+#define MMU_CAM_PGSZ_1M         (0 << 0)
+#define MMU_CAM_PGSZ_64K        (1 << 0)
+#define MMU_CAM_PGSZ_4K         (2 << 0)
+#define MMU_CAM_PGSZ_16M        (3 << 0)
+
+#define MMU_RAM_PADDR_SHIFT     12
+#define MMU_RAM_PADDR_MASK \
+        ((~0UL >> MMU_RAM_PADDR_SHIFT) << MMU_RAM_PADDR_SHIFT)
+#define MMU_RAM_ENDIAN_SHIFT    9
+#define MMU_RAM_ENDIAN_MASK     (1 << MMU_RAM_ENDIAN_SHIFT)
+#define MMU_RAM_ENDIAN_BIG      (1 << MMU_RAM_ENDIAN_SHIFT)
+#define MMU_RAM_ENDIAN_LITTLE   (0 << MMU_RAM_ENDIAN_SHIFT)
+#define MMU_RAM_ELSZ_SHIFT      7
+#define MMU_RAM_ELSZ_MASK       (3 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_ELSZ_8          (0 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_ELSZ_16         (1 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_ELSZ_32         (2 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_ELSZ_NONE       (3 << MMU_RAM_ELSZ_SHIFT)
+#define MMU_RAM_MIXED_SHIFT     6
+#define MMU_RAM_MIXED_MASK      (1 << MMU_RAM_MIXED_SHIFT)
+#define MMU_RAM_MIXED           MMU_RAM_MIXED_MASK
+
+/*
+ * register accessors
+ */
+static inline u32 iommu_read_reg(struct iommu *obj, size_t offs)
+{
+        return __raw_readl(obj->regbase + offs);
+}
+
+static inline void iommu_write_reg(struct iommu *obj, u32 val, size_t offs)
+{
+        __raw_writel(val, obj->regbase + offs);
+}
+
+#endif /* __MACH_IOMMU2_H */
diff --git a/arch/arm/plat-omap/include/mach/iovmm.h b/arch/arm/plat-omap/include/mach/iovmm.h
new file mode 100644
index 000000000000..bdc7ce5d7a4a
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/iovmm.h
@@ -0,0 +1,94 @@
+/*
+ * omap iommu: simple virtual address space management
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __IOMMU_MMAP_H
+#define __IOMMU_MMAP_H
+
+struct iovm_struct {
+        struct iommu            *iommu; /* iommu object which this belongs to */
+        u32                     da_start; /* area definition */
+        u32                     da_end;
+        u32                     flags; /* IOVMF_: see below */
+        struct list_head        list; /* linked in ascending order */
+        const struct sg_table   *sgt; /* keep 'page' <-> 'da' mapping */
+        void                    *va; /* mpu side mapped address */
+};
+
+/*
+ * IOVMF_FLAGS: attribute for iommu virtual memory area(iovma)
+ *
+ * lower 16 bit is used for h/w and upper 16 bit is for s/w.
+ */
+#define IOVMF_SW_SHIFT          16
+#define IOVMF_HW_SIZE           (1 << IOVMF_SW_SHIFT)
+#define IOVMF_HW_MASK           (IOVMF_HW_SIZE - 1)
+#define IOVMF_SW_MASK           (~IOVMF_HW_MASK)UL
+
+/*
+ * iovma: h/w flags derived from cam and ram attribute
+ */
+#define IOVMF_CAM_MASK          (~((1 << 10) - 1))
+#define IOVMF_RAM_MASK          (~IOVMF_CAM_MASK)
+
+#define IOVMF_PGSZ_MASK         (3 << 0)
+#define IOVMF_PGSZ_1M           MMU_CAM_PGSZ_1M
+#define IOVMF_PGSZ_64K          MMU_CAM_PGSZ_64K
+#define IOVMF_PGSZ_4K           MMU_CAM_PGSZ_4K
+#define IOVMF_PGSZ_16M          MMU_CAM_PGSZ_16M
+
+#define IOVMF_ENDIAN_MASK       (1 << 9)
+#define IOVMF_ENDIAN_BIG        MMU_RAM_ENDIAN_BIG
+#define IOVMF_ENDIAN_LITTLE     MMU_RAM_ENDIAN_LITTLE
+
+#define IOVMF_ELSZ_MASK         (3 << 7)
+#define IOVMF_ELSZ_8            MMU_RAM_ELSZ_8
+#define IOVMF_ELSZ_16           MMU_RAM_ELSZ_16
+#define IOVMF_ELSZ_32           MMU_RAM_ELSZ_32
+#define IOVMF_ELSZ_NONE         MMU_RAM_ELSZ_NONE
+
+#define IOVMF_MIXED_MASK        (1 << 6)
+#define IOVMF_MIXED             MMU_RAM_MIXED
+
+/*
+ * iovma: s/w flags, used for mapping and umapping internally.
+ */
+#define IOVMF_MMIO              (1 << IOVMF_SW_SHIFT)
+#define IOVMF_ALLOC             (2 << IOVMF_SW_SHIFT)
+#define IOVMF_ALLOC_MASK        (3 << IOVMF_SW_SHIFT)
+
+/* "superpages" is supported just with physically linear pages */
+#define IOVMF_DISCONT           (1 << (2 + IOVMF_SW_SHIFT))
+#define IOVMF_LINEAR            (2 << (2 + IOVMF_SW_SHIFT))
+#define IOVMF_LINEAR_MASK       (3 << (2 + IOVMF_SW_SHIFT))
+
+#define IOVMF_DA_FIXED          (1 << (4 + IOVMF_SW_SHIFT))
+#define IOVMF_DA_ANON           (2 << (4 + IOVMF_SW_SHIFT))
+#define IOVMF_DA_MASK           (3 << (4 + IOVMF_SW_SHIFT))
+
+
+extern struct iovm_struct *find_iovm_area(struct iommu *obj, u32 da);
+extern u32 iommu_vmap(struct iommu *obj, u32 da,
+                        const struct sg_table *sgt, u32 flags);
+extern struct sg_table *iommu_vunmap(struct iommu *obj, u32 da);
+extern u32 iommu_vmalloc(struct iommu *obj, u32 da, size_t bytes,
+                           u32 flags);
+extern void iommu_vfree(struct iommu *obj, const u32 da);
+extern u32 iommu_kmap(struct iommu *obj, u32 da, u32 pa, size_t bytes,
+                        u32 flags);
+extern void iommu_kunmap(struct iommu *obj, u32 da);
+extern u32 iommu_kmalloc(struct iommu *obj, u32 da, size_t bytes,
+                           u32 flags);
+extern void iommu_kfree(struct iommu *obj, u32 da);
+
+extern void *da_to_va(struct iommu *obj, u32 da);
+
+#endif /* __IOMMU_MMAP_H */
diff --git a/arch/arm/plat-omap/include/mach/irqs.h b/arch/arm/plat-omap/include/mach/irqs.h
index 7f57ee66f364..fb7cb7723990 100644
--- a/arch/arm/plat-omap/include/mach/irqs.h
+++ b/arch/arm/plat-omap/include/mach/irqs.h
@@ -4,6 +4,9 @@
  *  Copyright (C) Greg Lonnon 2001
  *  Updated for OMAP-1610 by Tony Lindgren <tony@atomide.com>
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
@@ -422,6 +425,94 @@
 
 #define INT_34XX_BENCH_MPU_EMUL 3
 
+
+#define IRQ_GIC_START           32
+#define INT_44XX_LOCALTIMER_IRQ 29
+#define INT_44XX_LOCALWDT_IRQ   30
+
+#define INT_44XX_BENCH_MPU_EMUL (3 + IRQ_GIC_START)
+#define INT_44XX_SSM_ABORT_IRQ  (6 + IRQ_GIC_START)
+#define INT_44XX_SYS_NIRQ       (7 + IRQ_GIC_START)
+#define INT_44XX_D2D_FW_IRQ     (8 + IRQ_GIC_START)
+#define INT_44XX_PRCM_MPU_IRQ   (11 + IRQ_GIC_START)
+#define INT_44XX_SDMA_IRQ0      (12 + IRQ_GIC_START)
+#define INT_44XX_SDMA_IRQ1      (13 + IRQ_GIC_START)
+#define INT_44XX_SDMA_IRQ2      (14 + IRQ_GIC_START)
+#define INT_44XX_SDMA_IRQ3      (15 + IRQ_GIC_START)
+#define INT_44XX_ISS_IRQ        (24 + IRQ_GIC_START)
+#define INT_44XX_DSS_IRQ        (25 + IRQ_GIC_START)
+#define INT_44XX_MAIL_U0_MPU    (26 + IRQ_GIC_START)
+#define INT_44XX_DSP_MMU        (28 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER1       (37 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER2       (38 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER3       (39 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER4       (40 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER5       (41 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER6       (42 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER7       (43 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER8       (44 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER9       (45 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER10      (46 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER11      (47 + IRQ_GIC_START)
+#define INT_44XX_GPTIMER12      (95 + IRQ_GIC_START)
+#define INT_44XX_SHA1MD5        (51 + IRQ_GIC_START)
+#define INT_44XX_I2C1_IRQ       (56 + IRQ_GIC_START)
+#define INT_44XX_I2C2_IRQ       (57 + IRQ_GIC_START)
+#define INT_44XX_HDQ_IRQ        (58 + IRQ_GIC_START)
+#define INT_44XX_SPI1_IRQ       (65 + IRQ_GIC_START)
+#define INT_44XX_SPI2_IRQ       (66 + IRQ_GIC_START)
+#define INT_44XX_HSI_1_IRQ0     (67 + IRQ_GIC_START)
+#define INT_44XX_HSI_2_IRQ1     (68 + IRQ_GIC_START)
+#define INT_44XX_HSI_1_DMAIRQ   (71 + IRQ_GIC_START)
+#define INT_44XX_UART1_IRQ      (72 + IRQ_GIC_START)
+#define INT_44XX_UART2_IRQ      (73 + IRQ_GIC_START)
+#define INT_44XX_UART3_IRQ      (74 + IRQ_GIC_START)
+#define INT_44XX_UART4_IRQ      (70 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_NISO   (76 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_ISO    (77 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_HGEN   (78 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_HSOF   (79 + IRQ_GIC_START)
+#define INT_44XX_USB_IRQ_OTG    (80 + IRQ_GIC_START)
+#define INT_44XX_MCBSP4_IRQ_TX  (81 + IRQ_GIC_START)
+#define INT_44XX_MCBSP4_IRQ_RX  (82 + IRQ_GIC_START)
+#define INT_44XX_MMC_IRQ        (83 + IRQ_GIC_START)
+#define INT_44XX_MMC2_IRQ       (86 + IRQ_GIC_START)
+#define INT_44XX_MCBSP2_IRQ_TX  (89 + IRQ_GIC_START)
+#define INT_44XX_MCBSP2_IRQ_RX  (90 + IRQ_GIC_START)
+#define INT_44XX_SPI3_IRQ       (91 + IRQ_GIC_START)
+#define INT_44XX_SPI5_IRQ       (69 + IRQ_GIC_START)
+
+#define INT_44XX_MCBSP5_IRQ     (16 + IRQ_GIC_START)
+#define INT_44xX_MCBSP1_IRQ     (17 + IRQ_GIC_START)
+#define INT_44XX_MCBSP2_IRQ     (22 + IRQ_GIC_START)
+#define INT_44XX_MCBSP3_IRQ     (23 + IRQ_GIC_START)
+#define INT_44XX_MCBSP4_IRQ     (27 + IRQ_GIC_START)
+#define INT_44XX_HS_USB_MC      (92 + IRQ_GIC_START)
+#define INT_44XX_HS_USB_DMA     (93 + IRQ_GIC_START)
+
+#define INT_44XX_GPIO_BANK1     (29 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK2     (30 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK3     (31 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK4     (32 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK5     (33 + IRQ_GIC_START)
+#define INT_44XX_GPIO_BANK6     (34 + IRQ_GIC_START)
+#define INT_44XX_USIM_IRQ       (35 + IRQ_GIC_START)
+#define INT_44XX_WDT3_IRQ       (36 + IRQ_GIC_START)
+#define INT_44XX_SPI4_IRQ       (48 + IRQ_GIC_START)
+#define INT_44XX_SHA1MD52_IRQ   (49 + IRQ_GIC_START)
+#define INT_44XX_FPKA_READY_IRQ (50 + IRQ_GIC_START)
+#define INT_44XX_SHA1MD51_IRQ   (51 + IRQ_GIC_START)
+#define INT_44XX_RNG_IRQ        (52 + IRQ_GIC_START)
+#define INT_44XX_I2C3_IRQ       (61 + IRQ_GIC_START)
+#define INT_44XX_FPKA_ERROR_IRQ (64 + IRQ_GIC_START)
+#define INT_44XX_PBIAS_IRQ      (75 + IRQ_GIC_START)
+#define INT_44XX_OHCI_IRQ       (76 + IRQ_GIC_START)
+#define INT_44XX_EHCI_IRQ       (77 + IRQ_GIC_START)
+#define INT_44XX_TLL_IRQ        (78 + IRQ_GIC_START)
+#define INT_44XX_PARTHASH_IRQ   (79 + IRQ_GIC_START)
+#define INT_44XX_MMC3_IRQ       (94 + IRQ_GIC_START)
+
+
 /* Max. 128 level 2 IRQs (OMAP1610), 192 GPIOs (OMAP730/850) and
  * 16 MPUIO lines */
 #define OMAP_MAX_GPIO_LINES     192
@@ -467,6 +558,7 @@
 
 #ifndef __ASSEMBLY__
 extern void omap_init_irq(void);
+extern int omap_irq_pending(void);
 #endif
 
 #include <mach/hardware.h>
diff --git a/arch/arm/plat-omap/include/mach/keypad.h b/arch/arm/plat-omap/include/mach/keypad.h
index 232923aaf61d..45ea3ae3c995 100644
--- a/arch/arm/plat-omap/include/mach/keypad.h
+++ b/arch/arm/plat-omap/include/mach/keypad.h
@@ -33,7 +33,11 @@ struct omap_kp_platform_data {
 #define GROUP_3         (3 << 16)
 #define GROUP_MASK      GROUP_3
 
+#define KEY_PERSISTENT          0x00800000
+#define KEYNUM_MASK             0x00EFFFFF
 #define KEY(col, row, val) (((col) << 28) | ((row) << 24) | (val))
+#define PERSISTENT_KEY(col, row) (((col) << 28) | ((row) << 24) | \
+                                                KEY_PERSISTENT)
 
 #endif
 
diff --git a/arch/arm/plat-omap/include/mach/memory.h b/arch/arm/plat-omap/include/mach/memory.h
index 99ed564d9277..9ad41dc484c1 100644
--- a/arch/arm/plat-omap/include/mach/memory.h
+++ b/arch/arm/plat-omap/include/mach/memory.h
@@ -38,7 +38,8 @@
  */
 #if defined(CONFIG_ARCH_OMAP1)
 #define PHYS_OFFSET             UL(0x10000000)
-#elif defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#elif defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3) || \
+                        defined(CONFIG_ARCH_OMAP4)
 #define PHYS_OFFSET             UL(0x80000000)
 #endif
 
diff --git a/arch/arm/plat-omap/include/mach/omap24xx.h b/arch/arm/plat-omap/include/mach/omap24xx.h
index 24335d4932f5..696edfc145a6 100644
--- a/arch/arm/plat-omap/include/mach/omap24xx.h
+++ b/arch/arm/plat-omap/include/mach/omap24xx.h
@@ -85,23 +85,5 @@
 #define OMAP24XX_SEC_AES_BASE   (OMAP24XX_SEC_BASE + 0x6000)
 #define OMAP24XX_SEC_PKA_BASE   (OMAP24XX_SEC_BASE + 0x8000)
 
-#if defined(CONFIG_ARCH_OMAP2420)
-
-#define OMAP2_32KSYNCT_BASE     OMAP2420_32KSYNCT_BASE
-#define OMAP2_PRCM_BASE         OMAP2420_PRCM_BASE
-#define OMAP2_CM_BASE           OMAP2420_CM_BASE
-#define OMAP2_PRM_BASE          OMAP2420_PRM_BASE
-#define OMAP2_VA_IC_BASE        IO_ADDRESS(OMAP24XX_IC_BASE)
-
-#elif defined(CONFIG_ARCH_OMAP2430)
-
-#define OMAP2_32KSYNCT_BASE     OMAP2430_32KSYNCT_BASE
-#define OMAP2_PRCM_BASE         OMAP2430_PRCM_BASE
-#define OMAP2_CM_BASE           OMAP2430_CM_BASE
-#define OMAP2_PRM_BASE          OMAP2430_PRM_BASE
-#define OMAP2_VA_IC_BASE        IO_ADDRESS(OMAP24XX_IC_BASE)
-
-#endif
-
 #endif /* __ASM_ARCH_OMAP24XX_H */
 
diff --git a/arch/arm/plat-omap/include/mach/omap34xx.h b/arch/arm/plat-omap/include/mach/omap34xx.h
index ab640151d3ec..f8d186a73712 100644
--- a/arch/arm/plat-omap/include/mach/omap34xx.h
+++ b/arch/arm/plat-omap/include/mach/omap34xx.h
@@ -31,13 +31,9 @@
 
 #define L4_34XX_BASE            0x48000000
 #define L4_WK_34XX_BASE         0x48300000
-#define L4_WK_OMAP_BASE         L4_WK_34XX_BASE
 #define L4_PER_34XX_BASE        0x49000000
-#define L4_PER_OMAP_BASE        L4_PER_34XX_BASE
 #define L4_EMU_34XX_BASE        0x54000000
-#define L4_EMU_BASE             L4_EMU_34XX_BASE
 #define L3_34XX_BASE            0x68000000
-#define L3_OMAP_BASE            L3_34XX_BASE
 
 #define OMAP3430_32KSYNCT_BASE  0x48320000
 #define OMAP3430_CM_BASE        0x48004800
@@ -83,15 +79,6 @@
 
 #define OMAP34XX_MAILBOX_BASE           (L4_34XX_BASE + 0x94000)
 
-#if defined(CONFIG_ARCH_OMAP3430)
-
-#define OMAP2_32KSYNCT_BASE             OMAP3430_32KSYNCT_BASE
-#define OMAP2_CM_BASE                   OMAP3430_CM_BASE
-#define OMAP2_PRM_BASE                  OMAP3430_PRM_BASE
-#define OMAP2_VA_IC_BASE                IO_ADDRESS(OMAP34XX_IC_BASE)
-
-#endif
-
 #define OMAP34XX_DSP_BASE       0x58000000
 #define OMAP34XX_DSP_MEM_BASE   (OMAP34XX_DSP_BASE + 0x0)
 #define OMAP34XX_DSP_IPI_BASE   (OMAP34XX_DSP_BASE + 0x1000000)
diff --git a/arch/arm/plat-omap/include/mach/omap44xx.h b/arch/arm/plat-omap/include/mach/omap44xx.h
new file mode 100644
index 000000000000..15dec7f1c7c0
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/omap44xx.h
@@ -0,0 +1,46 @@
+/*:
+ * Address mappings and base address for OMAP4 interconnects
+ * and peripherals.
+ *
+ * Copyright (C) 2009 Texas Instruments
+ *
+ * Author: Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ASM_ARCH_OMAP44XX_H
+#define __ASM_ARCH_OMAP44XX_H
+
+/*
+ * Please place only base defines here and put the rest in device
+ * specific headers.
+ */
+#define L4_44XX_BASE                    0x4a000000
+#define L4_WK_44XX_BASE                 0x4a300000
+#define L4_PER_44XX_BASE                0x48000000
+#define L4_EMU_44XX_BASE                0x54000000
+#define L3_44XX_BASE                    0x44000000
+#define OMAP4430_32KSYNCT_BASE          0x4a304000
+#define OMAP4430_CM_BASE                0x4a004000
+#define OMAP4430_PRM_BASE               0x48306000
+#define OMAP44XX_GPMC_BASE              0x50000000
+#define OMAP443X_SCM_BASE               0x4a002000
+#define OMAP443X_CTRL_BASE              OMAP443X_SCM_BASE
+#define OMAP44XX_IC_BASE                0x48200000
+#define OMAP44XX_IVA_INTC_BASE          0x40000000
+#define IRQ_SIR_IRQ                     0x0040
+#define OMAP44XX_GIC_DIST_BASE          0x48241000
+#define OMAP44XX_GIC_CPU_BASE           0x48240100
+#define OMAP44XX_VA_GIC_CPU_BASE        IO_ADDRESS(OMAP44XX_GIC_CPU_BASE)
+#define OMAP44XX_SCU_BASE               0x48240000
+#define OMAP44XX_VA_SCU_BASE            IO_ADDRESS(OMAP44XX_SCU_BASE)
+#define OMAP44XX_LOCAL_TWD_BASE         0x48240600
+#define OMAP44XX_VA_LOCAL_TWD_BASE      IO_ADDRESS(OMAP44XX_LOCAL_TWD_BASE)
+#define OMAP44XX_LOCAL_TWD_SIZE         0x00000100
+#define OMAP44XX_WKUPGEN_BASE           0x48281000
+#define OMAP44XX_VA_WKUPGEN_BASE        IO_ADDRESS(OMAP44XX_WKUPGEN_BASE)
+
+#endif /* __ASM_ARCH_OMAP44XX_H */
+
diff --git a/arch/arm/plat-omap/include/mach/onenand.h b/arch/arm/plat-omap/include/mach/onenand.h
index 4649d302c263..72f433d7d827 100644
--- a/arch/arm/plat-omap/include/mach/onenand.h
+++ b/arch/arm/plat-omap/include/mach/onenand.h
@@ -9,8 +9,12 @@
  * published by the Free Software Foundation.
  */
 
+#include <linux/mtd/mtd.h>
 #include <linux/mtd/partitions.h>
 
+#define ONENAND_SYNC_READ       (1 << 0)
+#define ONENAND_SYNC_READWRITE  (1 << 1)
+
 struct omap_onenand_platform_data {
         int                     cs;
         int                     gpio_irq;
@@ -18,8 +22,22 @@ struct omap_onenand_platform_data {
         int                     nr_parts;
         int                     (*onenand_setup)(void __iomem *, int freq);
         int                     dma_channel;
+        u8                      flags;
 };
 
-int omap2_onenand_rephase(void);
-
 #define ONENAND_MAX_PARTITIONS 8
+
+#if defined(CONFIG_MTD_ONENAND_OMAP2) || \
+        defined(CONFIG_MTD_ONENAND_OMAP2_MODULE)
+
+extern void gpmc_onenand_init(struct omap_onenand_platform_data *d);
+
+#else
+
+#define board_onenand_data      NULL
+
+static inline void gpmc_onenand_init(struct omap_onenand_platform_data *d)
+{
+}
+
+#endif
diff --git a/arch/arm/plat-omap/include/mach/pm.h b/arch/arm/plat-omap/include/mach/pm.h
deleted file mode 100644
index ce6ee7927537..000000000000
--- a/arch/arm/plat-omap/include/mach/pm.h
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * arch/arm/plat-omap/include/mach/pm.h
- *
- * Header file for OMAP Power Management Routines
- *
- * Author: MontaVista Software, Inc.
- *         support@mvista.com
- *
- * Copyright 2002 MontaVista Software Inc.
- *
- * Cleanup 2004 for Linux 2.6 by Dirk Behme <dirk.behme@de.bosch.com>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#ifndef __ASM_ARCH_OMAP_PM_H
-#define __ASM_ARCH_OMAP_PM_H
-
-/*
- * ----------------------------------------------------------------------------
- * Register and offset definitions to be used in PM assembler code
- * ----------------------------------------------------------------------------
- */
-#define CLKGEN_REG_ASM_BASE             IO_ADDRESS(0xfffece00)
-#define ARM_IDLECT1_ASM_OFFSET          0x04
-#define ARM_IDLECT2_ASM_OFFSET          0x08
-
-#define TCMIF_ASM_BASE                  IO_ADDRESS(0xfffecc00)
-#define EMIFS_CONFIG_ASM_OFFSET         0x0c
-#define EMIFF_SDRAM_CONFIG_ASM_OFFSET   0x20
-
-/*
- * ----------------------------------------------------------------------------
- * Power management bitmasks
- * ----------------------------------------------------------------------------
- */
-#define IDLE_WAIT_CYCLES                0x00000fff
-#define PERIPHERAL_ENABLE               0x2
-
-#define SELF_REFRESH_MODE               0x0c000001
-#define IDLE_EMIFS_REQUEST              0xc
-#define MODEM_32K_EN                    0x1
-#define PER_EN                          0x1
-
-#define CPU_SUSPEND_SIZE                200
-#define ULPD_LOW_PWR_EN                 0x0001
-#define ULPD_DEEP_SLEEP_TRANSITION_EN   0x0010
-#define ULPD_SETUP_ANALOG_CELL_3_VAL    0
-#define ULPD_POWER_CTRL_REG_VAL         0x0219
-
-#define DSP_IDLE_DELAY                  10
-#define DSP_IDLE                        0x0040
-#define DSP_RST                         0x0004
-#define DSP_ENABLE                      0x0002
-#define SUFFICIENT_DSP_RESET_TIME       1000
-#define DEFAULT_MPUI_CONFIG             0x05cf
-#define ENABLE_XORCLK                   0x2
-#define DSP_CLOCK_ENABLE                0x2000
-#define DSP_IDLE_MODE                   0x2
-#define TC_IDLE_REQUEST                 (0x0000000c)
-
-#define IRQ_LEVEL2                      (1<<0)
-#define IRQ_KEYBOARD                    (1<<1)
-#define IRQ_UART2                       (1<<15)
-
-#define PDE_BIT                         0x08
-#define PWD_EN_BIT                      0x04
-#define EN_PERCK_BIT                    0x04
-
-#define OMAP1510_DEEP_SLEEP_REQUEST     0x0ec7
-#define OMAP1510_BIG_SLEEP_REQUEST      0x0cc5
-#define OMAP1510_IDLE_LOOP_REQUEST      0x0c00
-#define OMAP1510_IDLE_CLOCK_DOMAINS     0x2
-
-/* Both big sleep and deep sleep use same values. Difference is in ULPD. */
-#define OMAP1610_IDLECT1_SLEEP_VAL      0x13c7
-#define OMAP1610_IDLECT2_SLEEP_VAL      0x09c7
-#define OMAP1610_IDLECT3_VAL            0x3f
-#define OMAP1610_IDLECT3_SLEEP_ORMASK   0x2c
-#define OMAP1610_IDLECT3                0xfffece24
-#define OMAP1610_IDLE_LOOP_REQUEST      0x0400
-
-#define OMAP730_IDLECT1_SLEEP_VAL       0x16c7
-#define OMAP730_IDLECT2_SLEEP_VAL       0x09c7
-#define OMAP730_IDLECT3_VAL             0x3f
-#define OMAP730_IDLECT3         0xfffece24
-#define OMAP730_IDLE_LOOP_REQUEST       0x0C00
-
-#if     !defined(CONFIG_ARCH_OMAP730) && \
-        !defined(CONFIG_ARCH_OMAP15XX) && \
-        !defined(CONFIG_ARCH_OMAP16XX) && \
-        !defined(CONFIG_ARCH_OMAP24XX)
-#warning "Power management for this processor not implemented yet"
-#endif
-
-#ifndef __ASSEMBLER__
-
-#include <linux/clk.h>
-
-extern void prevent_idle_sleep(void);
-extern void allow_idle_sleep(void);
-
-extern void omap_pm_idle(void);
-extern void omap_pm_suspend(void);
-extern void omap730_cpu_suspend(unsigned short, unsigned short);
-extern void omap1510_cpu_suspend(unsigned short, unsigned short);
-extern void omap1610_cpu_suspend(unsigned short, unsigned short);
-extern void omap24xx_cpu_suspend(u32 dll_ctrl, void __iomem *sdrc_dlla_ctrl,
-                                        void __iomem *sdrc_power);
-extern void omap730_idle_loop_suspend(void);
-extern void omap1510_idle_loop_suspend(void);
-extern void omap1610_idle_loop_suspend(void);
-extern void omap24xx_idle_loop_suspend(void);
-
-extern unsigned int omap730_cpu_suspend_sz;
-extern unsigned int omap1510_cpu_suspend_sz;
-extern unsigned int omap1610_cpu_suspend_sz;
-extern unsigned int omap24xx_cpu_suspend_sz;
-extern unsigned int omap730_idle_loop_suspend_sz;
-extern unsigned int omap1510_idle_loop_suspend_sz;
-extern unsigned int omap1610_idle_loop_suspend_sz;
-extern unsigned int omap24xx_idle_loop_suspend_sz;
-
-#ifdef CONFIG_OMAP_SERIAL_WAKE
-extern void omap_serial_wake_trigger(int enable);
-#else
-#define omap_serial_wakeup_init()       {}
-#define omap_serial_wake_trigger(x)     {}
-#endif  /* CONFIG_OMAP_SERIAL_WAKE */
-
-#define ARM_SAVE(x) arm_sleep_save[ARM_SLEEP_SAVE_##x] = omap_readl(x)
-#define ARM_RESTORE(x) omap_writel((arm_sleep_save[ARM_SLEEP_SAVE_##x]), (x))
-#define ARM_SHOW(x) arm_sleep_save[ARM_SLEEP_SAVE_##x]
-
-#define DSP_SAVE(x) dsp_sleep_save[DSP_SLEEP_SAVE_##x] = __raw_readw(x)
-#define DSP_RESTORE(x) __raw_writew((dsp_sleep_save[DSP_SLEEP_SAVE_##x]), (x))
-#define DSP_SHOW(x) dsp_sleep_save[DSP_SLEEP_SAVE_##x]
-
-#define ULPD_SAVE(x) ulpd_sleep_save[ULPD_SLEEP_SAVE_##x] = omap_readw(x)
-#define ULPD_RESTORE(x) omap_writew((ulpd_sleep_save[ULPD_SLEEP_SAVE_##x]), (x))
-#define ULPD_SHOW(x) ulpd_sleep_save[ULPD_SLEEP_SAVE_##x]
-
-#define MPUI730_SAVE(x) mpui730_sleep_save[MPUI730_SLEEP_SAVE_##x] = omap_readl(x)
-#define MPUI730_RESTORE(x) omap_writel((mpui730_sleep_save[MPUI730_SLEEP_SAVE_##x]), (x))
-#define MPUI730_SHOW(x) mpui730_sleep_save[MPUI730_SLEEP_SAVE_##x]
-
-#define MPUI1510_SAVE(x) mpui1510_sleep_save[MPUI1510_SLEEP_SAVE_##x] = omap_readl(x)
-#define MPUI1510_RESTORE(x) omap_writel((mpui1510_sleep_save[MPUI1510_SLEEP_SAVE_##x]), (x))
-#define MPUI1510_SHOW(x) mpui1510_sleep_save[MPUI1510_SLEEP_SAVE_##x]
-
-#define MPUI1610_SAVE(x) mpui1610_sleep_save[MPUI1610_SLEEP_SAVE_##x] = omap_readl(x)
-#define MPUI1610_RESTORE(x) omap_writel((mpui1610_sleep_save[MPUI1610_SLEEP_SAVE_##x]), (x))
-#define MPUI1610_SHOW(x) mpui1610_sleep_save[MPUI1610_SLEEP_SAVE_##x]
-
-#define OMAP24XX_SAVE(x) omap24xx_sleep_save[OMAP24XX_SLEEP_SAVE_##x] = x
-#define OMAP24XX_RESTORE(x) x = omap24xx_sleep_save[OMAP24XX_SLEEP_SAVE_##x]
-#define OMAP24XX_SHOW(x) omap24xx_sleep_save[OMAP24XX_SLEEP_SAVE_##x]
-
-/*
- * List of global OMAP registers to preserve.
- * More ones like CP and general purpose register values are preserved
- * with the stack pointer in sleep.S.
- */
-
-enum arm_save_state {
-        ARM_SLEEP_SAVE_START = 0,
-        /*
-         * MPU control registers 32 bits
-         */
-        ARM_SLEEP_SAVE_ARM_CKCTL,
-        ARM_SLEEP_SAVE_ARM_IDLECT1,
-        ARM_SLEEP_SAVE_ARM_IDLECT2,
-        ARM_SLEEP_SAVE_ARM_IDLECT3,
-        ARM_SLEEP_SAVE_ARM_EWUPCT,
-        ARM_SLEEP_SAVE_ARM_RSTCT1,
-        ARM_SLEEP_SAVE_ARM_RSTCT2,
-        ARM_SLEEP_SAVE_ARM_SYSST,
-        ARM_SLEEP_SAVE_SIZE
-};
-
-enum dsp_save_state {
-        DSP_SLEEP_SAVE_START = 0,
-        /*
-         * DSP registers 16 bits
-         */
-        DSP_SLEEP_SAVE_DSP_IDLECT2,
-        DSP_SLEEP_SAVE_SIZE
-};
-
-enum ulpd_save_state {
-        ULPD_SLEEP_SAVE_START = 0,
-        /*
-         * ULPD registers 16 bits
-         */
-        ULPD_SLEEP_SAVE_ULPD_IT_STATUS,
-        ULPD_SLEEP_SAVE_ULPD_CLOCK_CTRL,
-        ULPD_SLEEP_SAVE_ULPD_SOFT_REQ,
-        ULPD_SLEEP_SAVE_ULPD_STATUS_REQ,
-        ULPD_SLEEP_SAVE_ULPD_DPLL_CTRL,
-        ULPD_SLEEP_SAVE_ULPD_POWER_CTRL,
-        ULPD_SLEEP_SAVE_SIZE
-};
-
-enum mpui1510_save_state {
-        MPUI1510_SLEEP_SAVE_START = 0,
-        /*
-         * MPUI registers 32 bits
-         */
-        MPUI1510_SLEEP_SAVE_MPUI_CTRL,
-        MPUI1510_SLEEP_SAVE_MPUI_DSP_BOOT_CONFIG,
-        MPUI1510_SLEEP_SAVE_MPUI_DSP_API_CONFIG,
-        MPUI1510_SLEEP_SAVE_MPUI_DSP_STATUS,
-        MPUI1510_SLEEP_SAVE_EMIFF_SDRAM_CONFIG,
-        MPUI1510_SLEEP_SAVE_EMIFS_CONFIG,
-        MPUI1510_SLEEP_SAVE_OMAP_IH1_MIR,
-        MPUI1510_SLEEP_SAVE_OMAP_IH2_MIR,
-#if defined(CONFIG_ARCH_OMAP15XX)
-        MPUI1510_SLEEP_SAVE_SIZE
-#else
-        MPUI1510_SLEEP_SAVE_SIZE = 0
-#endif
-};
-
-enum mpui730_save_state {
-        MPUI730_SLEEP_SAVE_START = 0,
-        /*
-         * MPUI registers 32 bits
-         */
-        MPUI730_SLEEP_SAVE_MPUI_CTRL,
-        MPUI730_SLEEP_SAVE_MPUI_DSP_BOOT_CONFIG,
-        MPUI730_SLEEP_SAVE_MPUI_DSP_API_CONFIG,
-        MPUI730_SLEEP_SAVE_MPUI_DSP_STATUS,
-        MPUI730_SLEEP_SAVE_EMIFF_SDRAM_CONFIG,
-        MPUI730_SLEEP_SAVE_EMIFS_CONFIG,
-        MPUI730_SLEEP_SAVE_OMAP_IH1_MIR,
-        MPUI730_SLEEP_SAVE_OMAP_IH2_0_MIR,
-        MPUI730_SLEEP_SAVE_OMAP_IH2_1_MIR,
-#if defined(CONFIG_ARCH_OMAP730)
-        MPUI730_SLEEP_SAVE_SIZE
-#else
-        MPUI730_SLEEP_SAVE_SIZE = 0
-#endif
-};
-
-enum mpui1610_save_state {
-        MPUI1610_SLEEP_SAVE_START = 0,
-        /*
-         * MPUI registers 32 bits
-         */
-        MPUI1610_SLEEP_SAVE_MPUI_CTRL,
-        MPUI1610_SLEEP_SAVE_MPUI_DSP_BOOT_CONFIG,
-        MPUI1610_SLEEP_SAVE_MPUI_DSP_API_CONFIG,
-        MPUI1610_SLEEP_SAVE_MPUI_DSP_STATUS,
-        MPUI1610_SLEEP_SAVE_EMIFF_SDRAM_CONFIG,
-        MPUI1610_SLEEP_SAVE_EMIFS_CONFIG,
-        MPUI1610_SLEEP_SAVE_OMAP_IH1_MIR,
-        MPUI1610_SLEEP_SAVE_OMAP_IH2_0_MIR,
-        MPUI1610_SLEEP_SAVE_OMAP_IH2_1_MIR,
-        MPUI1610_SLEEP_SAVE_OMAP_IH2_2_MIR,
-        MPUI1610_SLEEP_SAVE_OMAP_IH2_3_MIR,
-#if defined(CONFIG_ARCH_OMAP16XX)
-        MPUI1610_SLEEP_SAVE_SIZE
-#else
-        MPUI1610_SLEEP_SAVE_SIZE = 0
-#endif
-};
-
-enum omap24xx_save_state {
-        OMAP24XX_SLEEP_SAVE_START = 0,
-        OMAP24XX_SLEEP_SAVE_INTC_MIR0,
-        OMAP24XX_SLEEP_SAVE_INTC_MIR1,
-        OMAP24XX_SLEEP_SAVE_INTC_MIR2,
-
-        OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_MPU,
-        OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_GFX,
-        OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_DSP,
-        OMAP24XX_SLEEP_SAVE_CM_CLKSTCTRL_MDM,
-
-        OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_MPU,
-        OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_CORE,
-        OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_GFX,
-        OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_DSP,
-        OMAP24XX_SLEEP_SAVE_PM_PWSTCTRL_MDM,
-
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST1_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST2_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST3_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST4_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST_GFX,
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST_WKUP,
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST_CKGEN,
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST_DSP,
-        OMAP24XX_SLEEP_SAVE_CM_IDLEST_MDM,
-
-        OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE1_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE2_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE3_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE4_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE_WKUP,
-        OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE_PLL,
-        OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE_DSP,
-        OMAP24XX_SLEEP_SAVE_CM_AUTOIDLE_MDM,
-
-        OMAP24XX_SLEEP_SAVE_CM_FCLKEN1_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_FCLKEN2_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_ICLKEN1_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_ICLKEN2_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_ICLKEN3_CORE,
-        OMAP24XX_SLEEP_SAVE_CM_ICLKEN4_CORE,
-        OMAP24XX_SLEEP_SAVE_GPIO1_IRQENABLE1,
-        OMAP24XX_SLEEP_SAVE_GPIO2_IRQENABLE1,
-        OMAP24XX_SLEEP_SAVE_GPIO3_IRQENABLE1,
-        OMAP24XX_SLEEP_SAVE_GPIO4_IRQENABLE1,
-        OMAP24XX_SLEEP_SAVE_GPIO3_OE,
-        OMAP24XX_SLEEP_SAVE_GPIO4_OE,
-        OMAP24XX_SLEEP_SAVE_GPIO3_RISINGDETECT,
-        OMAP24XX_SLEEP_SAVE_GPIO3_FALLINGDETECT,
-        OMAP24XX_SLEEP_SAVE_CONTROL_PADCONF_SPI1_NCS2,
-        OMAP24XX_SLEEP_SAVE_CONTROL_PADCONF_MCBSP1_DX,
-        OMAP24XX_SLEEP_SAVE_CONTROL_PADCONF_SSI1_FLAG_TX,
-        OMAP24XX_SLEEP_SAVE_CONTROL_PADCONF_SYS_NIRQW0,
-        OMAP24XX_SLEEP_SAVE_SIZE
-};
-
-#endif /* ASSEMBLER */
-#endif /* __ASM_ARCH_OMAP_PM_H */
diff --git a/arch/arm/plat-omap/include/mach/serial.h b/arch/arm/plat-omap/include/mach/serial.h
index 8a676a04be48..13abd02d1527 100644
--- a/arch/arm/plat-omap/include/mach/serial.h
+++ b/arch/arm/plat-omap/include/mach/serial.h
@@ -1,5 +1,8 @@
 /*
- *  arch/arm/plat-omap/include/mach/serial.h
+ * arch/arm/plat-omap/include/mach/serial.h
+ *
+ * Copyright (C) 2009 Texas Instruments
+ * Addded OMAP4 support- Santosh Shilimkar <santosh.shilimkar@ti.com>
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -15,19 +18,28 @@
 #define OMAP_UART1_BASE         0xfffb0000
 #define OMAP_UART2_BASE         0xfffb0800
 #define OMAP_UART3_BASE         0xfffb9800
+#define OMAP_MAX_NR_PORTS       3
 #elif defined(CONFIG_ARCH_OMAP2)
 /* OMAP2 serial ports */
 #define OMAP_UART1_BASE         0x4806a000
 #define OMAP_UART2_BASE         0x4806c000
 #define OMAP_UART3_BASE         0x4806e000
+#define OMAP_MAX_NR_PORTS       3
 #elif defined(CONFIG_ARCH_OMAP3)
 /* OMAP3 serial ports */
 #define OMAP_UART1_BASE         0x4806a000
 #define OMAP_UART2_BASE         0x4806c000
 #define OMAP_UART3_BASE         0x49020000
+#define OMAP_MAX_NR_PORTS       3
+#elif defined(CONFIG_ARCH_OMAP4)
+/* OMAP4 serial ports */
+#define OMAP_UART1_BASE         0x4806a000
+#define OMAP_UART2_BASE         0x4806c000
+#define OMAP_UART3_BASE         0x48020000
+#define OMAP_UART4_BASE         0x4806e000
+#define OMAP_MAX_NR_PORTS       4
 #endif
 
-#define OMAP_MAX_NR_PORTS       3
 #define OMAP1510_BASE_BAUD      (12000000/16)
 #define OMAP16XX_BASE_BAUD      (48000000/16)
 #define OMAP24XX_BASE_BAUD      (48000000/16)
@@ -40,4 +52,13 @@
                         __ret;                                          \
                         })
 
+#ifndef __ASSEMBLER__
+extern void omap_serial_init(void);
+extern int omap_uart_can_sleep(void);
+extern void omap_uart_check_wakeup(void);
+extern void omap_uart_prepare_suspend(void);
+extern void omap_uart_prepare_idle(int num);
+extern void omap_uart_resume_idle(int num);
+#endif
+
 #endif
diff --git a/arch/arm/plat-omap/include/mach/smp.h b/arch/arm/plat-omap/include/mach/smp.h
new file mode 100644
index 000000000000..dcaa8fde7063
--- /dev/null
+++ b/arch/arm/plat-omap/include/mach/smp.h
@@ -0,0 +1,51 @@
+/*
+ * OMAP4 machine specific smp.h
+ *
+ * Copyright (C) 2009 Texas Instruments, Inc.
+ *
+ * Author:
+ *      Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * Interface functions needed for the SMP. This file is based on arm
+ * realview smp platform.
+ * Copyright (c) 2003 ARM Limited.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef OMAP_ARCH_SMP_H
+#define OMAP_ARCH_SMP_H
+
+#include <asm/hardware/gic.h>
+
+/*
+ * set_event() is used to wake up secondary core from wfe using sev. ROM
+ * code puts the second core into wfe(standby).
+ *
+ */
+#define set_event()     __asm__ __volatile__ ("sev" : : : "memory")
+
+/* Needed for secondary core boot */
+extern void omap_secondary_startup(void);
+
+/*
+ * We use Soft IRQ1 as the IPI
+ */
+static inline void smp_cross_call(const struct cpumask *mask)
+{
+        gic_raise_softirq(mask, 1);
+}
+
+/*
+ * Read MPIDR: Multiprocessor affinity register
+ */
+#define hard_smp_processor_id()                 \
+        ({                                              \
+                unsigned int cpunum;                    \
+                __asm__("mrc p15, 0, %0, c0, c0, 5"     \
+                        : "=r" (cpunum));               \
+                cpunum &= 0x0F;                         \
+        })
+
+#endif
diff --git a/arch/arm/plat-omap/include/mach/sram.h b/arch/arm/plat-omap/include/mach/sram.h
index ab35d622dcf5..dca7c16ae903 100644
--- a/arch/arm/plat-omap/include/mach/sram.h
+++ b/arch/arm/plat-omap/include/mach/sram.h
@@ -23,7 +23,8 @@ extern u32 omap2_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
 
 extern u32 omap3_configure_core_dpll(u32 sdrc_rfr_ctrl,
                                      u32 sdrc_actim_ctrla,
-                                     u32 sdrc_actim_ctrlb, u32 m2);
+                                     u32 sdrc_actim_ctrlb, u32 m2,
+                                     u32 unlock_dll);
 
 /* Do not use these */
 extern void omap1_sram_reprogram_clock(u32 ckctl, u32 dpllctl);
@@ -60,7 +61,8 @@ extern unsigned long omap243x_sram_reprogram_sdrc_sz;
 
 extern u32 omap3_sram_configure_core_dpll(u32 sdrc_rfr_ctrl,
                                           u32 sdrc_actim_ctrla,
-                                          u32 sdrc_actim_ctrlb, u32 m2);
+                                          u32 sdrc_actim_ctrlb, u32 m2,
+                                          u32 unlock_dll);
 extern unsigned long omap3_sram_configure_core_dpll_sz;
 
 #endif
diff --git a/arch/arm/plat-omap/include/mach/usb.h b/arch/arm/plat-omap/include/mach/usb.h
index 69f0ceed500b..f337e1761e2c 100644
--- a/arch/arm/plat-omap/include/mach/usb.h
+++ b/arch/arm/plat-omap/include/mach/usb.h
@@ -27,13 +27,7 @@
 #define UDC_BASE                        OMAP2_UDC_BASE
 #define OMAP_OHCI_BASE                  OMAP2_OHCI_BASE
 
-#ifdef CONFIG_USB_MUSB_SOC
 extern void usb_musb_init(void);
-#else
-static inline void usb_musb_init(void)
-{
-}
-#endif
 
 #endif
 
diff --git a/arch/arm/plat-omap/include/mach/vmalloc.h b/arch/arm/plat-omap/include/mach/vmalloc.h
index dc104cd96197..b97dfafeebda 100644
--- a/arch/arm/plat-omap/include/mach/vmalloc.h
+++ b/arch/arm/plat-omap/include/mach/vmalloc.h
@@ -17,5 +17,5 @@
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
-#define VMALLOC_END       (PAGE_OFFSET + 0x10000000)
+#define VMALLOC_END       (PAGE_OFFSET + 0x18000000)
 
diff --git a/arch/arm/plat-omap/io.c b/arch/arm/plat-omap/io.c
index af326efc1ad3..9b42d72d96cf 100644
--- a/arch/arm/plat-omap/io.c
+++ b/arch/arm/plat-omap/io.c
@@ -1,3 +1,14 @@
+/*
+ * Common io.c file
+ * This file is created by Russell King <rmk+kernel@arm.linux.org.uk>
+ *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
 #include <linux/module.h>
 #include <linux/io.h>
 #include <linux/mm.h>
@@ -7,6 +18,7 @@
 #include <mach/omap16xx.h>
 #include <mach/omap24xx.h>
 #include <mach/omap34xx.h>
+#include <mach/omap44xx.h>
 
 #define BETWEEN(p,st,sz)        ((p) >= (st) && (p) < ((st) + (sz)))
 #define XLATE(p,pst,vst)        ((void __iomem *)((p) - (pst) + (vst)))
@@ -92,7 +104,22 @@ void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
                         return XLATE(p, L4_EMU_34XX_PHYS, L4_EMU_34XX_VIRT);
         }
 #endif
-
+#ifdef CONFIG_ARCH_OMAP4
+        if (cpu_is_omap44xx()) {
+                if (BETWEEN(p, L3_44XX_PHYS, L3_44XX_SIZE))
+                        return XLATE(p, L3_44XX_PHYS, L3_44XX_VIRT);
+                if (BETWEEN(p, L4_44XX_PHYS, L4_44XX_SIZE))
+                        return XLATE(p, L4_44XX_PHYS, L4_44XX_VIRT);
+                if (BETWEEN(p, L4_WK_44XX_PHYS, L4_WK_44XX_SIZE))
+                        return XLATE(p, L4_WK_44XX_PHYS, L4_WK_44XX_VIRT);
+                if (BETWEEN(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_SIZE))
+                        return XLATE(p, OMAP44XX_GPMC_PHYS, OMAP44XX_GPMC_VIRT);
+                if (BETWEEN(p, L4_PER_44XX_PHYS, L4_PER_44XX_SIZE))
+                        return XLATE(p, L4_PER_44XX_PHYS, L4_PER_44XX_VIRT);
+                if (BETWEEN(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_SIZE))
+                        return XLATE(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_VIRT);
+        }
+#endif
         return __arm_ioremap(p, size, type);
 }
 EXPORT_SYMBOL(omap_ioremap);
diff --git a/arch/arm/plat-omap/iommu.c b/arch/arm/plat-omap/iommu.c
new file mode 100644
index 000000000000..4cf449fa2cb5
--- /dev/null
+++ b/arch/arm/plat-omap/iommu.c
@@ -0,0 +1,996 @@
+/*
+ * omap iommu: tlb and pagetable primitives
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>,
+ *              Paul Mundt and Toshihiro Kobayashi
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/clk.h>
+#include <linux/platform_device.h>
+
+#include <asm/cacheflush.h>
+
+#include <mach/iommu.h>
+
+#include "iopgtable.h"
+
+/* accommodate the difference between omap1 and omap2/3 */
+static const struct iommu_functions *arch_iommu;
+
+static struct platform_driver omap_iommu_driver;
+static struct kmem_cache *iopte_cachep;
+
+/**
+ * install_iommu_arch - Install archtecure specific iommu functions
+ * @ops:        a pointer to architecture specific iommu functions
+ *
+ * There are several kind of iommu algorithm(tlb, pagetable) among
+ * omap series. This interface installs such an iommu algorighm.
+ **/
+int install_iommu_arch(const struct iommu_functions *ops)
+{
+        if (arch_iommu)
+                return -EBUSY;
+
+        arch_iommu = ops;
+        return 0;
+}
+EXPORT_SYMBOL_GPL(install_iommu_arch);
+
+/**
+ * uninstall_iommu_arch - Uninstall archtecure specific iommu functions
+ * @ops:        a pointer to architecture specific iommu functions
+ *
+ * This interface uninstalls the iommu algorighm installed previously.
+ **/
+void uninstall_iommu_arch(const struct iommu_functions *ops)
+{
+        if (arch_iommu != ops)
+                pr_err("%s: not your arch\n", __func__);
+
+        arch_iommu = NULL;
+}
+EXPORT_SYMBOL_GPL(uninstall_iommu_arch);
+
+/**
+ * iommu_save_ctx - Save registers for pm off-mode support
+ * @obj:        target iommu
+ **/
+void iommu_save_ctx(struct iommu *obj)
+{
+        arch_iommu->save_ctx(obj);
+}
+EXPORT_SYMBOL_GPL(iommu_save_ctx);
+
+/**
+ * iommu_restore_ctx - Restore registers for pm off-mode support
+ * @obj:        target iommu
+ **/
+void iommu_restore_ctx(struct iommu *obj)
+{
+        arch_iommu->restore_ctx(obj);
+}
+EXPORT_SYMBOL_GPL(iommu_restore_ctx);
+
+/**
+ * iommu_arch_version - Return running iommu arch version
+ **/
+u32 iommu_arch_version(void)
+{
+        return arch_iommu->version;
+}
+EXPORT_SYMBOL_GPL(iommu_arch_version);
+
+static int iommu_enable(struct iommu *obj)
+{
+        int err;
+
+        if (!obj)
+                return -EINVAL;
+
+        clk_enable(obj->clk);
+
+        err = arch_iommu->enable(obj);
+
+        clk_disable(obj->clk);
+        return err;
+}
+
+static void iommu_disable(struct iommu *obj)
+{
+        if (!obj)
+                return;
+
+        clk_enable(obj->clk);
+
+        arch_iommu->disable(obj);
+
+        clk_disable(obj->clk);
+}
+
+/*
+ *      TLB operations
+ */
+void iotlb_cr_to_e(struct cr_regs *cr, struct iotlb_entry *e)
+{
+        BUG_ON(!cr || !e);
+
+        arch_iommu->cr_to_e(cr, e);
+}
+EXPORT_SYMBOL_GPL(iotlb_cr_to_e);
+
+static inline int iotlb_cr_valid(struct cr_regs *cr)
+{
+        if (!cr)
+                return -EINVAL;
+
+        return arch_iommu->cr_valid(cr);
+}
+
+static inline struct cr_regs *iotlb_alloc_cr(struct iommu *obj,
+                                             struct iotlb_entry *e)
+{
+        if (!e)
+                return NULL;
+
+        return arch_iommu->alloc_cr(obj, e);
+}
+
+u32 iotlb_cr_to_virt(struct cr_regs *cr)
+{
+        return arch_iommu->cr_to_virt(cr);
+}
+EXPORT_SYMBOL_GPL(iotlb_cr_to_virt);
+
+static u32 get_iopte_attr(struct iotlb_entry *e)
+{
+        return arch_iommu->get_pte_attr(e);
+}
+
+static u32 iommu_report_fault(struct iommu *obj, u32 *da)
+{
+        return arch_iommu->fault_isr(obj, da);
+}
+
+static void iotlb_lock_get(struct iommu *obj, struct iotlb_lock *l)
+{
+        u32 val;
+
+        val = iommu_read_reg(obj, MMU_LOCK);
+
+        l->base = MMU_LOCK_BASE(val);
+        l->vict = MMU_LOCK_VICT(val);
+
+        BUG_ON(l->base != 0); /* Currently no preservation is used */
+}
+
+static void iotlb_lock_set(struct iommu *obj, struct iotlb_lock *l)
+{
+        u32 val;
+
+        BUG_ON(l->base != 0); /* Currently no preservation is used */
+
+        val = (l->base << MMU_LOCK_BASE_SHIFT);
+        val |= (l->vict << MMU_LOCK_VICT_SHIFT);
+
+        iommu_write_reg(obj, val, MMU_LOCK);
+}
+
+static void iotlb_read_cr(struct iommu *obj, struct cr_regs *cr)
+{
+        arch_iommu->tlb_read_cr(obj, cr);
+}
+
+static void iotlb_load_cr(struct iommu *obj, struct cr_regs *cr)
+{
+        arch_iommu->tlb_load_cr(obj, cr);
+
+        iommu_write_reg(obj, 1, MMU_FLUSH_ENTRY);
+        iommu_write_reg(obj, 1, MMU_LD_TLB);
+}
+
+/**
+ * iotlb_dump_cr - Dump an iommu tlb entry into buf
+ * @obj:        target iommu
+ * @cr:         contents of cam and ram register
+ * @buf:        output buffer
+ **/
+static inline ssize_t iotlb_dump_cr(struct iommu *obj, struct cr_regs *cr,
+                                    char *buf)
+{
+        BUG_ON(!cr || !buf);
+
+        return arch_iommu->dump_cr(obj, cr, buf);
+}
+
+/**
+ * load_iotlb_entry - Set an iommu tlb entry
+ * @obj:        target iommu
+ * @e:          an iommu tlb entry info
+ **/
+int load_iotlb_entry(struct iommu *obj, struct iotlb_entry *e)
+{
+        int i;
+        int err = 0;
+        struct iotlb_lock l;
+        struct cr_regs *cr;
+
+        if (!obj || !obj->nr_tlb_entries || !e)
+                return -EINVAL;
+
+        clk_enable(obj->clk);
+
+        for (i = 0; i < obj->nr_tlb_entries; i++) {
+                struct cr_regs tmp;
+
+                iotlb_lock_get(obj, &l);
+                l.vict = i;
+                iotlb_lock_set(obj, &l);
+                iotlb_read_cr(obj, &tmp);
+                if (!iotlb_cr_valid(&tmp))
+                        break;
+        }
+
+        if (i == obj->nr_tlb_entries) {
+                dev_dbg(obj->dev, "%s: full: no entry\n", __func__);
+                err = -EBUSY;
+                goto out;
+        }
+
+        cr = iotlb_alloc_cr(obj, e);
+        if (IS_ERR(cr)) {
+                clk_disable(obj->clk);
+                return PTR_ERR(cr);
+        }
+
+        iotlb_load_cr(obj, cr);
+        kfree(cr);
+
+        /* increment victim for next tlb load */
+        if (++l.vict == obj->nr_tlb_entries)
+                l.vict = 0;
+        iotlb_lock_set(obj, &l);
+out:
+        clk_disable(obj->clk);
+        return err;
+}
+EXPORT_SYMBOL_GPL(load_iotlb_entry);
+
+/**
+ * flush_iotlb_page - Clear an iommu tlb entry
+ * @obj:        target iommu
+ * @da:         iommu device virtual address
+ *
+ * Clear an iommu tlb entry which includes 'da' address.
+ **/
+void flush_iotlb_page(struct iommu *obj, u32 da)
+{
+        struct iotlb_lock l;
+        int i;
+
+        clk_enable(obj->clk);
+
+        for (i = 0; i < obj->nr_tlb_entries; i++) {
+                struct cr_regs cr;
+                u32 start;
+                size_t bytes;
+
+                iotlb_lock_get(obj, &l);
+                l.vict = i;
+                iotlb_lock_set(obj, &l);
+                iotlb_read_cr(obj, &cr);
+                if (!iotlb_cr_valid(&cr))
+                        continue;
+
+                start = iotlb_cr_to_virt(&cr);
+                bytes = iopgsz_to_bytes(cr.cam & 3);
+
+                if ((start <= da) && (da < start + bytes)) {
+                        dev_dbg(obj->dev, "%s: %08x<=%08x(%x)\n",
+                                __func__, start, da, bytes);
+
+                        iommu_write_reg(obj, 1, MMU_FLUSH_ENTRY);
+                }
+        }
+        clk_disable(obj->clk);
+
+        if (i == obj->nr_tlb_entries)
+                dev_dbg(obj->dev, "%s: no page for %08x\n", __func__, da);
+}
+EXPORT_SYMBOL_GPL(flush_iotlb_page);
+
+/**
+ * flush_iotlb_range - Clear an iommu tlb entries
+ * @obj:        target iommu
+ * @start:      iommu device virtual address(start)
+ * @end:        iommu device virtual address(end)
+ *
+ * Clear an iommu tlb entry which includes 'da' address.
+ **/
+void flush_iotlb_range(struct iommu *obj, u32 start, u32 end)
+{
+        u32 da = start;
+
+        while (da < end) {
+                flush_iotlb_page(obj, da);
+                /* FIXME: Optimize for multiple page size */
+                da += IOPTE_SIZE;
+        }
+}
+EXPORT_SYMBOL_GPL(flush_iotlb_range);
+
+/**
+ * flush_iotlb_all - Clear all iommu tlb entries
+ * @obj:        target iommu
+ **/
+void flush_iotlb_all(struct iommu *obj)
+{
+        struct iotlb_lock l;
+
+        clk_enable(obj->clk);
+
+        l.base = 0;
+        l.vict = 0;
+        iotlb_lock_set(obj, &l);
+
+        iommu_write_reg(obj, 1, MMU_GFLUSH);
+
+        clk_disable(obj->clk);
+}
+EXPORT_SYMBOL_GPL(flush_iotlb_all);
+
+#if defined(CONFIG_OMAP_IOMMU_DEBUG_MODULE)
+
+ssize_t iommu_dump_ctx(struct iommu *obj, char *buf)
+{
+        ssize_t bytes;
+
+        if (!obj || !buf)
+                return -EINVAL;
+
+        clk_enable(obj->clk);
+
+        bytes = arch_iommu->dump_ctx(obj, buf);
+
+        clk_disable(obj->clk);
+
+        return bytes;
+}
+EXPORT_SYMBOL_GPL(iommu_dump_ctx);
+
+static int __dump_tlb_entries(struct iommu *obj, struct cr_regs *crs)
+{
+        int i;
+        struct iotlb_lock saved, l;
+        struct cr_regs *p = crs;
+
+        clk_enable(obj->clk);
+
+        iotlb_lock_get(obj, &saved);
+        memcpy(&l, &saved, sizeof(saved));
+
+        for (i = 0; i < obj->nr_tlb_entries; i++) {
+                struct cr_regs tmp;
+
+                iotlb_lock_get(obj, &l);
+                l.vict = i;
+                iotlb_lock_set(obj, &l);
+                iotlb_read_cr(obj, &tmp);
+                if (!iotlb_cr_valid(&tmp))
+                        continue;
+
+                *p++ = tmp;
+        }
+        iotlb_lock_set(obj, &saved);
+        clk_disable(obj->clk);
+
+        return  p - crs;
+}
+
+/**
+ * dump_tlb_entries - dump cr arrays to given buffer
+ * @obj:        target iommu
+ * @buf:        output buffer
+ **/
+size_t dump_tlb_entries(struct iommu *obj, char *buf)
+{
+        int i, n;
+        struct cr_regs *cr;
+        char *p = buf;
+
+        cr = kcalloc(obj->nr_tlb_entries, sizeof(*cr), GFP_KERNEL);
+        if (!cr)
+                return 0;
+
+        n = __dump_tlb_entries(obj, cr);
+        for (i = 0; i < n; i++)
+                p += iotlb_dump_cr(obj, cr + i, p);
+        kfree(cr);
+
+        return p - buf;
+}
+EXPORT_SYMBOL_GPL(dump_tlb_entries);
+
+int foreach_iommu_device(void *data, int (*fn)(struct device *, void *))
+{
+        return driver_for_each_device(&omap_iommu_driver.driver,
+                                      NULL, data, fn);
+}
+EXPORT_SYMBOL_GPL(foreach_iommu_device);
+
+#endif /* CONFIG_OMAP_IOMMU_DEBUG_MODULE */
+
+/*
+ *      H/W pagetable operations
+ */
+static void flush_iopgd_range(u32 *first, u32 *last)
+{
+        /* FIXME: L2 cache should be taken care of if it exists */
+        do {
+                asm("mcr        p15, 0, %0, c7, c10, 1 @ flush_pgd"
+                    : : "r" (first));
+                first += L1_CACHE_BYTES / sizeof(*first);
+        } while (first <= last);
+}
+
+static void flush_iopte_range(u32 *first, u32 *last)
+{
+        /* FIXME: L2 cache should be taken care of if it exists */
+        do {
+                asm("mcr        p15, 0, %0, c7, c10, 1 @ flush_pte"
+                    : : "r" (first));
+                first += L1_CACHE_BYTES / sizeof(*first);
+        } while (first <= last);
+}
+
+static void iopte_free(u32 *iopte)
+{
+        /* Note: freed iopte's must be clean ready for re-use */
+        kmem_cache_free(iopte_cachep, iopte);
+}
+
+static u32 *iopte_alloc(struct iommu *obj, u32 *iopgd, u32 da)
+{
+        u32 *iopte;
+
+        /* a table has already existed */
+        if (*iopgd)
+                goto pte_ready;
+
+        /*
+         * do the allocation outside the page table lock
+         */
+        spin_unlock(&obj->page_table_lock);
+        iopte = kmem_cache_zalloc(iopte_cachep, GFP_KERNEL);
+        spin_lock(&obj->page_table_lock);
+
+        if (!*iopgd) {
+                if (!iopte)
+                        return ERR_PTR(-ENOMEM);
+
+                *iopgd = virt_to_phys(iopte) | IOPGD_TABLE;
+                flush_iopgd_range(iopgd, iopgd);
+
+                dev_vdbg(obj->dev, "%s: a new pte:%p\n", __func__, iopte);
+        } else {
+                /* We raced, free the reduniovant table */
+                iopte_free(iopte);
+        }
+
+pte_ready:
+        iopte = iopte_offset(iopgd, da);
+
+        dev_vdbg(obj->dev,
+                 "%s: da:%08x pgd:%p *pgd:%08x pte:%p *pte:%08x\n",
+                 __func__, da, iopgd, *iopgd, iopte, *iopte);
+
+        return iopte;
+}
+
+static int iopgd_alloc_section(struct iommu *obj, u32 da, u32 pa, u32 prot)
+{
+        u32 *iopgd = iopgd_offset(obj, da);
+
+        *iopgd = (pa & IOSECTION_MASK) | prot | IOPGD_SECTION;
+        flush_iopgd_range(iopgd, iopgd);
+        return 0;
+}
+
+static int iopgd_alloc_super(struct iommu *obj, u32 da, u32 pa, u32 prot)
+{
+        u32 *iopgd = iopgd_offset(obj, da);
+        int i;
+
+        for (i = 0; i < 16; i++)
+                *(iopgd + i) = (pa & IOSUPER_MASK) | prot | IOPGD_SUPER;
+        flush_iopgd_range(iopgd, iopgd + 15);
+        return 0;
+}
+
+static int iopte_alloc_page(struct iommu *obj, u32 da, u32 pa, u32 prot)
+{
+        u32 *iopgd = iopgd_offset(obj, da);
+        u32 *iopte = iopte_alloc(obj, iopgd, da);
+
+        if (IS_ERR(iopte))
+                return PTR_ERR(iopte);
+
+        *iopte = (pa & IOPAGE_MASK) | prot | IOPTE_SMALL;
+        flush_iopte_range(iopte, iopte);
+
+        dev_vdbg(obj->dev, "%s: da:%08x pa:%08x pte:%p *pte:%08x\n",
+                 __func__, da, pa, iopte, *iopte);
+
+        return 0;
+}
+
+static int iopte_alloc_large(struct iommu *obj, u32 da, u32 pa, u32 prot)
+{
+        u32 *iopgd = iopgd_offset(obj, da);
+        u32 *iopte = iopte_alloc(obj, iopgd, da);
+        int i;
+
+        if (IS_ERR(iopte))
+                return PTR_ERR(iopte);
+
+        for (i = 0; i < 16; i++)
+                *(iopte + i) = (pa & IOLARGE_MASK) | prot | IOPTE_LARGE;
+        flush_iopte_range(iopte, iopte + 15);
+        return 0;
+}
+
+static int iopgtable_store_entry_core(struct iommu *obj, struct iotlb_entry *e)
+{
+        int (*fn)(struct iommu *, u32, u32, u32);
+        u32 prot;
+        int err;
+
+        if (!obj || !e)
+                return -EINVAL;
+
+        switch (e->pgsz) {
+        case MMU_CAM_PGSZ_16M:
+                fn = iopgd_alloc_super;
+                break;
+        case MMU_CAM_PGSZ_1M:
+                fn = iopgd_alloc_section;
+                break;
+        case MMU_CAM_PGSZ_64K:
+                fn = iopte_alloc_large;
+                break;
+        case MMU_CAM_PGSZ_4K:
+                fn = iopte_alloc_page;
+                break;
+        default:
+                fn = NULL;
+                BUG();
+                break;
+        }
+
+        prot = get_iopte_attr(e);
+
+        spin_lock(&obj->page_table_lock);
+        err = fn(obj, e->da, e->pa, prot);
+        spin_unlock(&obj->page_table_lock);
+
+        return err;
+}
+
+/**
+ * iopgtable_store_entry - Make an iommu pte entry
+ * @obj:        target iommu
+ * @e:          an iommu tlb entry info
+ **/
+int iopgtable_store_entry(struct iommu *obj, struct iotlb_entry *e)
+{
+        int err;
+
+        flush_iotlb_page(obj, e->da);
+        err = iopgtable_store_entry_core(obj, e);
+#ifdef PREFETCH_IOTLB
+        if (!err)
+                load_iotlb_entry(obj, e);
+#endif
+        return err;
+}
+EXPORT_SYMBOL_GPL(iopgtable_store_entry);
+
+/**
+ * iopgtable_lookup_entry - Lookup an iommu pte entry
+ * @obj:        target iommu
+ * @da:         iommu device virtual address
+ * @ppgd:       iommu pgd entry pointer to be returned
+ * @ppte:       iommu pte entry pointer to be returned
+ **/
+void iopgtable_lookup_entry(struct iommu *obj, u32 da, u32 **ppgd, u32 **ppte)
+{
+        u32 *iopgd, *iopte = NULL;
+
+        iopgd = iopgd_offset(obj, da);
+        if (!*iopgd)
+                goto out;
+
+        if (*iopgd & IOPGD_TABLE)
+                iopte = iopte_offset(iopgd, da);
+out:
+        *ppgd = iopgd;
+        *ppte = iopte;
+}
+EXPORT_SYMBOL_GPL(iopgtable_lookup_entry);
+
+static size_t iopgtable_clear_entry_core(struct iommu *obj, u32 da)
+{
+        size_t bytes;
+        u32 *iopgd = iopgd_offset(obj, da);
+        int nent = 1;
+
+        if (!*iopgd)
+                return 0;
+
+        if (*iopgd & IOPGD_TABLE) {
+                int i;
+                u32 *iopte = iopte_offset(iopgd, da);
+
+                bytes = IOPTE_SIZE;
+                if (*iopte & IOPTE_LARGE) {
+                        nent *= 16;
+                        /* rewind to the 1st entry */
+                        iopte = (u32 *)((u32)iopte & IOLARGE_MASK);
+                }
+                bytes *= nent;
+                memset(iopte, 0, nent * sizeof(*iopte));
+                flush_iopte_range(iopte, iopte + (nent - 1) * sizeof(*iopte));
+
+                /*
+                 * do table walk to check if this table is necessary or not
+                 */
+                iopte = iopte_offset(iopgd, 0);
+                for (i = 0; i < PTRS_PER_IOPTE; i++)
+                        if (iopte[i])
+                                goto out;
+
+                iopte_free(iopte);
+                nent = 1; /* for the next L1 entry */
+        } else {
+                bytes = IOPGD_SIZE;
+                if (*iopgd & IOPGD_SUPER) {
+                        nent *= 16;
+                        /* rewind to the 1st entry */
+                        iopgd = (u32 *)((u32)iopgd & IOSUPER_MASK);
+                }
+                bytes *= nent;
+        }
+        memset(iopgd, 0, nent * sizeof(*iopgd));
+        flush_iopgd_range(iopgd, iopgd + (nent - 1) * sizeof(*iopgd));
+out:
+        return bytes;
+}
+
+/**
+ * iopgtable_clear_entry - Remove an iommu pte entry
+ * @obj:        target iommu
+ * @da:         iommu device virtual address
+ **/
+size_t iopgtable_clear_entry(struct iommu *obj, u32 da)
+{
+        size_t bytes;
+
+        spin_lock(&obj->page_table_lock);
+
+        bytes = iopgtable_clear_entry_core(obj, da);
+        flush_iotlb_page(obj, da);
+
+        spin_unlock(&obj->page_table_lock);
+
+        return bytes;
+}
+EXPORT_SYMBOL_GPL(iopgtable_clear_entry);
+
+static void iopgtable_clear_entry_all(struct iommu *obj)
+{
+        int i;
+
+        spin_lock(&obj->page_table_lock);
+
+        for (i = 0; i < PTRS_PER_IOPGD; i++) {
+                u32 da;
+                u32 *iopgd;
+
+                da = i << IOPGD_SHIFT;
+                iopgd = iopgd_offset(obj, da);
+
+                if (!*iopgd)
+                        continue;
+
+                if (*iopgd & IOPGD_TABLE)
+                        iopte_free(iopte_offset(iopgd, 0));
+
+                *iopgd = 0;
+                flush_iopgd_range(iopgd, iopgd);
+        }
+
+        flush_iotlb_all(obj);
+
+        spin_unlock(&obj->page_table_lock);
+}
+
+/*
+ *      Device IOMMU generic operations
+ */
+static irqreturn_t iommu_fault_handler(int irq, void *data)
+{
+        u32 stat, da;
+        u32 *iopgd, *iopte;
+        int err = -EIO;
+        struct iommu *obj = data;
+
+        if (!obj->refcount)
+                return IRQ_NONE;
+
+        /* Dynamic loading TLB or PTE */
+        if (obj->isr)
+                err = obj->isr(obj);
+
+        if (!err)
+                return IRQ_HANDLED;
+
+        clk_enable(obj->clk);
+        stat = iommu_report_fault(obj, &da);
+        clk_disable(obj->clk);
+        if (!stat)
+                return IRQ_HANDLED;
+
+        iopgd = iopgd_offset(obj, da);
+
+        if (!(*iopgd & IOPGD_TABLE)) {
+                dev_err(obj->dev, "%s: da:%08x pgd:%p *pgd:%08x\n", __func__,
+                        da, iopgd, *iopgd);
+                return IRQ_NONE;
+        }
+
+        iopte = iopte_offset(iopgd, da);
+
+        dev_err(obj->dev, "%s: da:%08x pgd:%p *pgd:%08x pte:%p *pte:%08x\n",
+                __func__, da, iopgd, *iopgd, iopte, *iopte);
+
+        return IRQ_NONE;
+}
+
+static int device_match_by_alias(struct device *dev, void *data)
+{
+        struct iommu *obj = to_iommu(dev);
+        const char *name = data;
+
+        pr_debug("%s: %s %s\n", __func__, obj->name, name);
+
+        return strcmp(obj->name, name) == 0;
+}
+
+/**
+ * iommu_get - Get iommu handler
+ * @name:       target iommu name
+ **/
+struct iommu *iommu_get(const char *name)
+{
+        int err = -ENOMEM;
+        struct device *dev;
+        struct iommu *obj;
+
+        dev = driver_find_device(&omap_iommu_driver.driver, NULL, (void *)name,
+                                 device_match_by_alias);
+        if (!dev)
+                return ERR_PTR(-ENODEV);
+
+        obj = to_iommu(dev);
+
+        mutex_lock(&obj->iommu_lock);
+
+        if (obj->refcount++ == 0) {
+                err = iommu_enable(obj);
+                if (err)
+                        goto err_enable;
+                flush_iotlb_all(obj);
+        }
+
+        if (!try_module_get(obj->owner))
+                goto err_module;
+
+        mutex_unlock(&obj->iommu_lock);
+
+        dev_dbg(obj->dev, "%s: %s\n", __func__, obj->name);
+        return obj;
+
+err_module:
+        if (obj->refcount == 1)
+                iommu_disable(obj);
+err_enable:
+        obj->refcount--;
+        mutex_unlock(&obj->iommu_lock);
+        return ERR_PTR(err);
+}
+EXPORT_SYMBOL_GPL(iommu_get);
+
+/**
+ * iommu_put - Put back iommu handler
+ * @obj:        target iommu
+ **/
+void iommu_put(struct iommu *obj)
+{
+        if (!obj && IS_ERR(obj))
+                return;
+
+        mutex_lock(&obj->iommu_lock);
+
+        if (--obj->refcount == 0)
+                iommu_disable(obj);
+
+        module_put(obj->owner);
+
+        mutex_unlock(&obj->iommu_lock);
+
+        dev_dbg(obj->dev, "%s: %s\n", __func__, obj->name);
+}
+EXPORT_SYMBOL_GPL(iommu_put);
+
+/*
+ *      OMAP Device MMU(IOMMU) detection
+ */
+static int __devinit omap_iommu_probe(struct platform_device *pdev)
+{
+        int err = -ENODEV;
+        void *p;
+        int irq;
+        struct iommu *obj;
+        struct resource *res;
+        struct iommu_platform_data *pdata = pdev->dev.platform_data;
+
+        if (pdev->num_resources != 2)
+                return -EINVAL;
+
+        obj = kzalloc(sizeof(*obj) + MMU_REG_SIZE, GFP_KERNEL);
+        if (!obj)
+                return -ENOMEM;
+
+        obj->clk = clk_get(&pdev->dev, pdata->clk_name);
+        if (IS_ERR(obj->clk))
+                goto err_clk;
+
+        obj->nr_tlb_entries = pdata->nr_tlb_entries;
+        obj->name = pdata->name;
+        obj->dev = &pdev->dev;
+        obj->ctx = (void *)obj + sizeof(*obj);
+
+        mutex_init(&obj->iommu_lock);
+        mutex_init(&obj->mmap_lock);
+        spin_lock_init(&obj->page_table_lock);
+        INIT_LIST_HEAD(&obj->mmap);
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
+                err = -ENODEV;
+                goto err_mem;
+        }
+        obj->regbase = ioremap(res->start, resource_size(res));
+        if (!obj->regbase) {
+                err = -ENOMEM;
+                goto err_mem;
+        }
+
+        res = request_mem_region(res->start, resource_size(res),
+                                 dev_name(&pdev->dev));
+        if (!res) {
+                err = -EIO;
+                goto err_mem;
+        }
+
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                err = -ENODEV;
+                goto err_irq;
+        }
+        err = request_irq(irq, iommu_fault_handler, IRQF_SHARED,
+                          dev_name(&pdev->dev), obj);
+        if (err < 0)
+                goto err_irq;
+        platform_set_drvdata(pdev, obj);
+
+        p = (void *)__get_free_pages(GFP_KERNEL, get_order(IOPGD_TABLE_SIZE));
+        if (!p) {
+                err = -ENOMEM;
+                goto err_pgd;
+        }
+        memset(p, 0, IOPGD_TABLE_SIZE);
+        clean_dcache_area(p, IOPGD_TABLE_SIZE);
+        obj->iopgd = p;
+
+        BUG_ON(!IS_ALIGNED((unsigned long)obj->iopgd, IOPGD_TABLE_SIZE));
+
+        dev_info(&pdev->dev, "%s registered\n", obj->name);
+        return 0;
+
+err_pgd:
+        free_irq(irq, obj);
+err_irq:
+        release_mem_region(res->start, resource_size(res));
+        iounmap(obj->regbase);
+err_mem:
+        clk_put(obj->clk);
+err_clk:
+        kfree(obj);
+        return err;
+}
+
+static int __devexit omap_iommu_remove(struct platform_device *pdev)
+{
+        int irq;
+        struct resource *res;
+        struct iommu *obj = platform_get_drvdata(pdev);
+
+        platform_set_drvdata(pdev, NULL);
+
+        iopgtable_clear_entry_all(obj);
+        free_pages((unsigned long)obj->iopgd, get_order(IOPGD_TABLE_SIZE));
+
+        irq = platform_get_irq(pdev, 0);
+        free_irq(irq, obj);
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        release_mem_region(res->start, resource_size(res));
+        iounmap(obj->regbase);
+
+        clk_put(obj->clk);
+        dev_info(&pdev->dev, "%s removed\n", obj->name);
+        kfree(obj);
+        return 0;
+}
+
+static struct platform_driver omap_iommu_driver = {
+        .probe  = omap_iommu_probe,
+        .remove = __devexit_p(omap_iommu_remove),
+        .driver = {
+                .name   = "omap-iommu",
+        },
+};
+
+static void iopte_cachep_ctor(void *iopte)
+{
+        clean_dcache_area(iopte, IOPTE_TABLE_SIZE);
+}
+
+static int __init omap_iommu_init(void)
+{
+        struct kmem_cache *p;
+        const unsigned long flags = SLAB_HWCACHE_ALIGN;
+        size_t align = 1 << 10; /* L2 pagetable alignement */
+
+        p = kmem_cache_create("iopte_cache", IOPTE_TABLE_SIZE, align, flags,
+                              iopte_cachep_ctor);
+        if (!p)
+                return -ENOMEM;
+        iopte_cachep = p;
+
+        return platform_driver_register(&omap_iommu_driver);
+}
+module_init(omap_iommu_init);
+
+static void __exit omap_iommu_exit(void)
+{
+        kmem_cache_destroy(iopte_cachep);
+
+        platform_driver_unregister(&omap_iommu_driver);
+}
+module_exit(omap_iommu_exit);
+
+MODULE_DESCRIPTION("omap iommu: tlb and pagetable primitives");
+MODULE_ALIAS("platform:omap-iommu");
+MODULE_AUTHOR("Hiroshi DOYU, Paul Mundt and Toshihiro Kobayashi");
+MODULE_LICENSE("GPL v2");
diff --git a/arch/arm/plat-omap/iopgtable.h b/arch/arm/plat-omap/iopgtable.h
new file mode 100644
index 000000000000..37dac434c7a1
--- /dev/null
+++ b/arch/arm/plat-omap/iopgtable.h
@@ -0,0 +1,72 @@
+/*
+ * omap iommu: pagetable definitions
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __PLAT_OMAP_IOMMU_H
+#define __PLAT_OMAP_IOMMU_H
+
+#define IOPGD_SHIFT             20
+#define IOPGD_SIZE              (1 << IOPGD_SHIFT)
+#define IOPGD_MASK              (~(IOPGD_SIZE - 1))
+#define IOSECTION_MASK          IOPGD_MASK
+#define PTRS_PER_IOPGD          (1 << (32 - IOPGD_SHIFT))
+#define IOPGD_TABLE_SIZE        (PTRS_PER_IOPGD * sizeof(u32))
+
+#define IOSUPER_SIZE            (IOPGD_SIZE << 4)
+#define IOSUPER_MASK            (~(IOSUPER_SIZE - 1))
+
+#define IOPTE_SHIFT             12
+#define IOPTE_SIZE              (1 << IOPTE_SHIFT)
+#define IOPTE_MASK              (~(IOPTE_SIZE - 1))
+#define IOPAGE_MASK             IOPTE_MASK
+#define PTRS_PER_IOPTE          (1 << (IOPGD_SHIFT - IOPTE_SHIFT))
+#define IOPTE_TABLE_SIZE        (PTRS_PER_IOPTE * sizeof(u32))
+
+#define IOLARGE_SIZE            (IOPTE_SIZE << 4)
+#define IOLARGE_MASK            (~(IOLARGE_SIZE - 1))
+
+#define IOPGD_TABLE             (1 << 0)
+#define IOPGD_SECTION           (2 << 0)
+#define IOPGD_SUPER             (1 << 18 | 2 << 0)
+
+#define IOPTE_SMALL             (2 << 0)
+#define IOPTE_LARGE             (1 << 0)
+
+#define iopgd_index(da)         (((da) >> IOPGD_SHIFT) & (PTRS_PER_IOPGD - 1))
+#define iopgd_offset(obj, da)   ((obj)->iopgd + iopgd_index(da))
+
+#define iopte_paddr(iopgd)      (*iopgd & ~((1 << 10) - 1))
+#define iopte_vaddr(iopgd)      ((u32 *)phys_to_virt(iopte_paddr(iopgd)))
+
+#define iopte_index(da)         (((da) >> IOPTE_SHIFT) & (PTRS_PER_IOPTE - 1))
+#define iopte_offset(iopgd, da) (iopte_vaddr(iopgd) + iopte_index(da))
+
+static inline u32 iotlb_init_entry(struct iotlb_entry *e, u32 da, u32 pa,
+                                   u32 flags)
+{
+        memset(e, 0, sizeof(*e));
+
+        e->da           = da;
+        e->pa           = pa;
+        e->valid        = 1;
+        /* FIXME: add OMAP1 support */
+        e->pgsz         = flags & MMU_CAM_PGSZ_MASK;
+        e->endian       = flags & MMU_RAM_ENDIAN_MASK;
+        e->elsz         = flags & MMU_RAM_ELSZ_MASK;
+        e->mixed        = flags & MMU_RAM_MIXED_MASK;
+
+        return iopgsz_to_bytes(e->pgsz);
+}
+
+#define to_iommu(dev)                                                   \
+        (struct iommu *)platform_get_drvdata(to_platform_device(dev))
+
+#endif /* __PLAT_OMAP_IOMMU_H */
diff --git a/arch/arm/plat-omap/iovmm.c b/arch/arm/plat-omap/iovmm.c
new file mode 100644
index 000000000000..2fce2c151a95
--- /dev/null
+++ b/arch/arm/plat-omap/iovmm.c
@@ -0,0 +1,896 @@
+/*
+ * omap iommu: simple virtual address space management
+ *
+ * Copyright (C) 2008-2009 Nokia Corporation
+ *
+ * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/err.h>
+#include <linux/vmalloc.h>
+#include <linux/device.h>
+#include <linux/scatterlist.h>
+
+#include <asm/cacheflush.h>
+#include <asm/mach/map.h>
+
+#include <mach/iommu.h>
+#include <mach/iovmm.h>
+
+#include "iopgtable.h"
+
+/*
+ * A device driver needs to create address mappings between:
+ *
+ * - iommu/device address
+ * - physical address
+ * - mpu virtual address
+ *
+ * There are 4 possible patterns for them:
+ *
+ *    |iova/                      mapping               iommu_          page
+ *    | da      pa      va      (d)-(p)-(v)             function        type
+ *  ---------------------------------------------------------------------------
+ *  1 | c       c       c        1 - 1 - 1        _kmap() / _kunmap()   s
+ *  2 | c       c,a     c        1 - 1 - 1      _kmalloc()/ _kfree()    s
+ *  3 | c       d       c        1 - n - 1        _vmap() / _vunmap()   s
+ *  4 | c       d,a     c        1 - n - 1      _vmalloc()/ _vfree()    n*
+ *
+ *
+ *      'iova': device iommu virtual address
+ *      'da':   alias of 'iova'
+ *      'pa':   physical address
+ *      'va':   mpu virtual address
+ *
+ *      'c':    contiguous memory area
+ *      'd':    dicontiguous memory area
+ *      'a':    anonymous memory allocation
+ *      '()':   optional feature
+ *
+ *      'n':    a normal page(4KB) size is used.
+ *      's':    multiple iommu superpage(16MB, 1MB, 64KB, 4KB) size is used.
+ *
+ *      '*':    not yet, but feasible.
+ */
+
+static struct kmem_cache *iovm_area_cachep;
+
+/* return total bytes of sg buffers */
+static size_t sgtable_len(const struct sg_table *sgt)
+{
+        unsigned int i, total = 0;
+        struct scatterlist *sg;
+
+        if (!sgt)
+                return 0;
+
+        for_each_sg(sgt->sgl, sg, sgt->nents, i) {
+                size_t bytes;
+
+                bytes = sg_dma_len(sg);
+
+                if (!iopgsz_ok(bytes)) {
+                        pr_err("%s: sg[%d] not iommu pagesize(%x)\n",
+                               __func__, i, bytes);
+                        return 0;
+                }
+
+                total += bytes;
+        }
+
+        return total;
+}
+#define sgtable_ok(x)   (!!sgtable_len(x))
+
+/*
+ * calculate the optimal number sg elements from total bytes based on
+ * iommu superpages
+ */
+static unsigned int sgtable_nents(size_t bytes)
+{
+        int i;
+        unsigned int nr_entries;
+        const unsigned long pagesize[] = { SZ_16M, SZ_1M, SZ_64K, SZ_4K, };
+
+        if (!IS_ALIGNED(bytes, PAGE_SIZE)) {
+                pr_err("%s: wrong size %08x\n", __func__, bytes);
+                return 0;
+        }
+
+        nr_entries = 0;
+        for (i = 0; i < ARRAY_SIZE(pagesize); i++) {
+                if (bytes >= pagesize[i]) {
+                        nr_entries += (bytes / pagesize[i]);
+                        bytes %= pagesize[i];
+                }
+        }
+        BUG_ON(bytes);
+
+        return nr_entries;
+}
+
+/* allocate and initialize sg_table header(a kind of 'superblock') */
+static struct sg_table *sgtable_alloc(const size_t bytes, u32 flags)
+{
+        unsigned int nr_entries;
+        int err;
+        struct sg_table *sgt;
+
+        if (!bytes)
+                return ERR_PTR(-EINVAL);
+
+        if (!IS_ALIGNED(bytes, PAGE_SIZE))
+                return ERR_PTR(-EINVAL);
+
+        /* FIXME: IOVMF_DA_FIXED should support 'superpages' */
+        if ((flags & IOVMF_LINEAR) && (flags & IOVMF_DA_ANON)) {
+                nr_entries = sgtable_nents(bytes);
+                if (!nr_entries)
+                        return ERR_PTR(-EINVAL);
+        } else
+                nr_entries =  bytes / PAGE_SIZE;
+
+        sgt = kzalloc(sizeof(*sgt), GFP_KERNEL);
+        if (!sgt)
+                return ERR_PTR(-ENOMEM);
+
+        err = sg_alloc_table(sgt, nr_entries, GFP_KERNEL);
+        if (err)
+                return ERR_PTR(err);
+
+        pr_debug("%s: sgt:%p(%d entries)\n", __func__, sgt, nr_entries);
+
+        return sgt;
+}
+
+/* free sg_table header(a kind of superblock) */
+static void sgtable_free(struct sg_table *sgt)
+{
+        if (!sgt)
+                return;
+
+        sg_free_table(sgt);
+        kfree(sgt);
+
+        pr_debug("%s: sgt:%p\n", __func__, sgt);
+}
+
+/* map 'sglist' to a contiguous mpu virtual area and return 'va' */
+static void *vmap_sg(const struct sg_table *sgt)
+{
+        u32 va;
+        size_t total;
+        unsigned int i;
+        struct scatterlist *sg;
+        struct vm_struct *new;
+        const struct mem_type *mtype;
+
+        mtype = get_mem_type(MT_DEVICE);
+        if (!mtype)
+                return ERR_PTR(-EINVAL);
+
+        total = sgtable_len(sgt);
+        if (!total)
+                return ERR_PTR(-EINVAL);
+
+        new = __get_vm_area(total, VM_IOREMAP, VMALLOC_START, VMALLOC_END);
+        if (!new)
+                return ERR_PTR(-ENOMEM);
+        va = (u32)new->addr;
+
+        for_each_sg(sgt->sgl, sg, sgt->nents, i) {
+                size_t bytes;
+                u32 pa;
+                int err;
+
+                pa = sg_phys(sg);
+                bytes = sg_dma_len(sg);
+
+                BUG_ON(bytes != PAGE_SIZE);
+
+                err = ioremap_page(va,  pa, mtype);
+                if (err)
+                        goto err_out;
+
+                va += bytes;
+        }
+
+        flush_cache_vmap(new->addr, total);
+        return new->addr;
+
+err_out:
+        WARN_ON(1); /* FIXME: cleanup some mpu mappings */
+        vunmap(new->addr);
+        return ERR_PTR(-EAGAIN);
+}
+
+static inline void vunmap_sg(const void *va)
+{
+        vunmap(va);
+}
+
+static struct iovm_struct *__find_iovm_area(struct iommu *obj, const u32 da)
+{
+        struct iovm_struct *tmp;
+
+        list_for_each_entry(tmp, &obj->mmap, list) {
+                if ((da >= tmp->da_start) && (da < tmp->da_end)) {
+                        size_t len;
+
+                        len = tmp->da_end - tmp->da_start;
+
+                        dev_dbg(obj->dev, "%s: %08x-%08x-%08x(%x) %08x\n",
+                                __func__, tmp->da_start, da, tmp->da_end, len,
+                                tmp->flags);
+
+                        return tmp;
+                }
+        }
+
+        return NULL;
+}
+
+/**
+ * find_iovm_area  -  find iovma which includes @da
+ * @da:         iommu device virtual address
+ *
+ * Find the existing iovma starting at @da
+ */
+struct iovm_struct *find_iovm_area(struct iommu *obj, u32 da)
+{
+        struct iovm_struct *area;
+
+        mutex_lock(&obj->mmap_lock);
+        area = __find_iovm_area(obj, da);
+        mutex_unlock(&obj->mmap_lock);
+
+        return area;
+}
+EXPORT_SYMBOL_GPL(find_iovm_area);
+
+/*
+ * This finds the hole(area) which fits the requested address and len
+ * in iovmas mmap, and returns the new allocated iovma.
+ */
+static struct iovm_struct *alloc_iovm_area(struct iommu *obj, u32 da,
+                                           size_t bytes, u32 flags)
+{
+        struct iovm_struct *new, *tmp;
+        u32 start, prev_end, alignement;
+
+        if (!obj || !bytes)
+                return ERR_PTR(-EINVAL);
+
+        start = da;
+        alignement = PAGE_SIZE;
+
+        if (flags & IOVMF_DA_ANON) {
+                /*
+                 * Reserve the first page for NULL
+                 */
+                start = PAGE_SIZE;
+                if (flags & IOVMF_LINEAR)
+                        alignement = iopgsz_max(bytes);
+                start = roundup(start, alignement);
+        }
+
+        tmp = NULL;
+        if (list_empty(&obj->mmap))
+                goto found;
+
+        prev_end = 0;
+        list_for_each_entry(tmp, &obj->mmap, list) {
+
+                if ((prev_end <= start) && (start + bytes < tmp->da_start))
+                        goto found;
+
+                if (flags & IOVMF_DA_ANON)
+                        start = roundup(tmp->da_end, alignement);
+
+                prev_end = tmp->da_end;
+        }
+
+        if ((start >= prev_end) && (ULONG_MAX - start >= bytes))
+                goto found;
+
+        dev_dbg(obj->dev, "%s: no space to fit %08x(%x) flags: %08x\n",
+                __func__, da, bytes, flags);
+
+        return ERR_PTR(-EINVAL);
+
+found:
+        new = kmem_cache_zalloc(iovm_area_cachep, GFP_KERNEL);
+        if (!new)
+                return ERR_PTR(-ENOMEM);
+
+        new->iommu = obj;
+        new->da_start = start;
+        new->da_end = start + bytes;
+        new->flags = flags;
+
+        /*
+         * keep ascending order of iovmas
+         */
+        if (tmp)
+                list_add_tail(&new->list, &tmp->list);
+        else
+                list_add(&new->list, &obj->mmap);
+
+        dev_dbg(obj->dev, "%s: found %08x-%08x-%08x(%x) %08x\n",
+                __func__, new->da_start, start, new->da_end, bytes, flags);
+
+        return new;
+}
+
+static void free_iovm_area(struct iommu *obj, struct iovm_struct *area)
+{
+        size_t bytes;
+
+        BUG_ON(!obj || !area);
+
+        bytes = area->da_end - area->da_start;
+
+        dev_dbg(obj->dev, "%s: %08x-%08x(%x) %08x\n",
+                __func__, area->da_start, area->da_end, bytes, area->flags);
+
+        list_del(&area->list);
+        kmem_cache_free(iovm_area_cachep, area);
+}
+
+/**
+ * da_to_va - convert (d) to (v)
+ * @obj:        objective iommu
+ * @da:         iommu device virtual address
+ * @va:         mpu virtual address
+ *
+ * Returns mpu virtual addr which corresponds to a given device virtual addr
+ */
+void *da_to_va(struct iommu *obj, u32 da)
+{
+        void *va = NULL;
+        struct iovm_struct *area;
+
+        mutex_lock(&obj->mmap_lock);
+
+        area = __find_iovm_area(obj, da);
+        if (!area) {
+                dev_dbg(obj->dev, "%s: no da area(%08x)\n", __func__, da);
+                goto out;
+        }
+        va = area->va;
+        mutex_unlock(&obj->mmap_lock);
+out:
+        return va;
+}
+EXPORT_SYMBOL_GPL(da_to_va);
+
+static void sgtable_fill_vmalloc(struct sg_table *sgt, void *_va)
+{
+        unsigned int i;
+        struct scatterlist *sg;
+        void *va = _va;
+        void *va_end;
+
+        for_each_sg(sgt->sgl, sg, sgt->nents, i) {
+                struct page *pg;
+                const size_t bytes = PAGE_SIZE;
+
+                /*
+                 * iommu 'superpage' isn't supported with 'iommu_vmalloc()'
+                 */
+                pg = vmalloc_to_page(va);
+                BUG_ON(!pg);
+                sg_set_page(sg, pg, bytes, 0);
+
+                va += bytes;
+        }
+
+        va_end = _va + PAGE_SIZE * i;
+        flush_cache_vmap(_va, va_end);
+}
+
+static inline void sgtable_drain_vmalloc(struct sg_table *sgt)
+{
+        /*
+         * Actually this is not necessary at all, just exists for
+         * consistency of the code readibility.
+         */
+        BUG_ON(!sgt);
+}
+
+static void sgtable_fill_kmalloc(struct sg_table *sgt, u32 pa, size_t len)
+{
+        unsigned int i;
+        struct scatterlist *sg;
+        void *va;
+
+        va = phys_to_virt(pa);
+
+        for_each_sg(sgt->sgl, sg, sgt->nents, i) {
+                size_t bytes;
+
+                bytes = iopgsz_max(len);
+
+                BUG_ON(!iopgsz_ok(bytes));
+
+                sg_set_buf(sg, phys_to_virt(pa), bytes);
+                /*
+                 * 'pa' is cotinuous(linear).
+                 */
+                pa += bytes;
+                len -= bytes;
+        }
+        BUG_ON(len);
+
+        clean_dcache_area(va, len);
+}
+
+static inline void sgtable_drain_kmalloc(struct sg_table *sgt)
+{
+        /*
+         * Actually this is not necessary at all, just exists for
+         * consistency of the code readibility
+         */
+        BUG_ON(!sgt);
+}
+
+/* create 'da' <-> 'pa' mapping from 'sgt' */
+static int map_iovm_area(struct iommu *obj, struct iovm_struct *new,
+                         const struct sg_table *sgt, u32 flags)
+{
+        int err;
+        unsigned int i, j;
+        struct scatterlist *sg;
+        u32 da = new->da_start;
+
+        if (!obj || !new || !sgt)
+                return -EINVAL;
+
+        BUG_ON(!sgtable_ok(sgt));
+
+        for_each_sg(sgt->sgl, sg, sgt->nents, i) {
+                u32 pa;
+                int pgsz;
+                size_t bytes;
+                struct iotlb_entry e;
+
+                pa = sg_phys(sg);
+                bytes = sg_dma_len(sg);
+
+                flags &= ~IOVMF_PGSZ_MASK;
+                pgsz = bytes_to_iopgsz(bytes);
+                if (pgsz < 0)
+                        goto err_out;
+                flags |= pgsz;
+
+                pr_debug("%s: [%d] %08x %08x(%x)\n", __func__,
+                         i, da, pa, bytes);
+
+                iotlb_init_entry(&e, da, pa, flags);
+                err = iopgtable_store_entry(obj, &e);
+                if (err)
+                        goto err_out;
+
+                da += bytes;
+        }
+        return 0;
+
+err_out:
+        da = new->da_start;
+
+        for_each_sg(sgt->sgl, sg, i, j) {
+                size_t bytes;
+
+                bytes = iopgtable_clear_entry(obj, da);
+
+                BUG_ON(!iopgsz_ok(bytes));
+
+                da += bytes;
+        }
+        return err;
+}
+
+/* release 'da' <-> 'pa' mapping */
+static void unmap_iovm_area(struct iommu *obj, struct iovm_struct *area)
+{
+        u32 start;
+        size_t total = area->da_end - area->da_start;
+
+        BUG_ON((!total) || !IS_ALIGNED(total, PAGE_SIZE));
+
+        start = area->da_start;
+        while (total > 0) {
+                size_t bytes;
+
+                bytes = iopgtable_clear_entry(obj, start);
+                if (bytes == 0)
+                        bytes = PAGE_SIZE;
+                else
+                        dev_dbg(obj->dev, "%s: unmap %08x(%x) %08x\n",
+                                __func__, start, bytes, area->flags);
+
+                BUG_ON(!IS_ALIGNED(bytes, PAGE_SIZE));
+
+                total -= bytes;
+                start += bytes;
+        }
+        BUG_ON(total);
+}
+
+/* template function for all unmapping */
+static struct sg_table *unmap_vm_area(struct iommu *obj, const u32 da,
+                                      void (*fn)(const void *), u32 flags)
+{
+        struct sg_table *sgt = NULL;
+        struct iovm_struct *area;
+
+        if (!IS_ALIGNED(da, PAGE_SIZE)) {
+                dev_err(obj->dev, "%s: alignment err(%08x)\n", __func__, da);
+                return NULL;
+        }
+
+        mutex_lock(&obj->mmap_lock);
+
+        area = __find_iovm_area(obj, da);
+        if (!area) {
+                dev_dbg(obj->dev, "%s: no da area(%08x)\n", __func__, da);
+                goto out;
+        }
+
+        if ((area->flags & flags) != flags) {
+                dev_err(obj->dev, "%s: wrong flags(%08x)\n", __func__,
+                        area->flags);
+                goto out;
+        }
+        sgt = (struct sg_table *)area->sgt;
+
+        unmap_iovm_area(obj, area);
+
+        fn(area->va);
+
+        dev_dbg(obj->dev, "%s: %08x-%08x-%08x(%x) %08x\n", __func__,
+                area->da_start, da, area->da_end,
+                area->da_end - area->da_start, area->flags);
+
+        free_iovm_area(obj, area);
+out:
+        mutex_unlock(&obj->mmap_lock);
+
+        return sgt;
+}
+
+static u32 map_iommu_region(struct iommu *obj, u32 da,
+              const struct sg_table *sgt, void *va, size_t bytes, u32 flags)
+{
+        int err = -ENOMEM;
+        struct iovm_struct *new;
+
+        mutex_lock(&obj->mmap_lock);
+
+        new = alloc_iovm_area(obj, da, bytes, flags);
+        if (IS_ERR(new)) {
+                err = PTR_ERR(new);
+                goto err_alloc_iovma;
+        }
+        new->va = va;
+        new->sgt = sgt;
+
+        if (map_iovm_area(obj, new, sgt, new->flags))
+                goto err_map;
+
+        mutex_unlock(&obj->mmap_lock);
+
+        dev_dbg(obj->dev, "%s: da:%08x(%x) flags:%08x va:%p\n",
+                __func__, new->da_start, bytes, new->flags, va);
+
+        return new->da_start;
+
+err_map:
+        free_iovm_area(obj, new);
+err_alloc_iovma:
+        mutex_unlock(&obj->mmap_lock);
+        return err;
+}
+
+static inline u32 __iommu_vmap(struct iommu *obj, u32 da,
+                 const struct sg_table *sgt, void *va, size_t bytes, u32 flags)
+{
+        return map_iommu_region(obj, da, sgt, va, bytes, flags);
+}
+
+/**
+ * iommu_vmap  -  (d)-(p)-(v) address mapper
+ * @obj:        objective iommu
+ * @sgt:        address of scatter gather table
+ * @flags:      iovma and page property
+ *
+ * Creates 1-n-1 mapping with given @sgt and returns @da.
+ * All @sgt element must be io page size aligned.
+ */
+u32 iommu_vmap(struct iommu *obj, u32 da, const struct sg_table *sgt,
+                 u32 flags)
+{
+        size_t bytes;
+        void *va;
+
+        if (!obj || !obj->dev || !sgt)
+                return -EINVAL;
+
+        bytes = sgtable_len(sgt);
+        if (!bytes)
+                return -EINVAL;
+        bytes = PAGE_ALIGN(bytes);
+
+        va = vmap_sg(sgt);
+        if (IS_ERR(va))
+                return PTR_ERR(va);
+
+        flags &= IOVMF_HW_MASK;
+        flags |= IOVMF_DISCONT;
+        flags |= IOVMF_MMIO;
+        flags |= (da ? IOVMF_DA_FIXED : IOVMF_DA_ANON);
+
+        da = __iommu_vmap(obj, da, sgt, va, bytes, flags);
+        if (IS_ERR_VALUE(da))
+                vunmap_sg(va);
+
+        return da;
+}
+EXPORT_SYMBOL_GPL(iommu_vmap);
+
+/**
+ * iommu_vunmap  -  release virtual mapping obtained by 'iommu_vmap()'
+ * @obj:        objective iommu
+ * @da:         iommu device virtual address
+ *
+ * Free the iommu virtually contiguous memory area starting at
+ * @da, which was returned by 'iommu_vmap()'.
+ */
+struct sg_table *iommu_vunmap(struct iommu *obj, u32 da)
+{
+        struct sg_table *sgt;
+        /*
+         * 'sgt' is allocated before 'iommu_vmalloc()' is called.
+         * Just returns 'sgt' to the caller to free
+         */
+        sgt = unmap_vm_area(obj, da, vunmap_sg, IOVMF_DISCONT | IOVMF_MMIO);
+        if (!sgt)
+                dev_dbg(obj->dev, "%s: No sgt\n", __func__);
+        return sgt;
+}
+EXPORT_SYMBOL_GPL(iommu_vunmap);
+
+/**
+ * iommu_vmalloc  -  (d)-(p)-(v) address allocator and mapper
+ * @obj:        objective iommu
+ * @da:         contiguous iommu virtual memory
+ * @bytes:      allocation size
+ * @flags:      iovma and page property
+ *
+ * Allocate @bytes linearly and creates 1-n-1 mapping and returns
+ * @da again, which might be adjusted if 'IOVMF_DA_ANON' is set.
+ */
+u32 iommu_vmalloc(struct iommu *obj, u32 da, size_t bytes, u32 flags)
+{
+        void *va;
+        struct sg_table *sgt;
+
+        if (!obj || !obj->dev || !bytes)
+                return -EINVAL;
+
+        bytes = PAGE_ALIGN(bytes);
+
+        va = vmalloc(bytes);
+        if (!va)
+                return -ENOMEM;
+
+        sgt = sgtable_alloc(bytes, flags);
+        if (IS_ERR(sgt)) {
+                da = PTR_ERR(sgt);
+                goto err_sgt_alloc;
+        }
+        sgtable_fill_vmalloc(sgt, va);
+
+        flags &= IOVMF_HW_MASK;
+        flags |= IOVMF_DISCONT;
+        flags |= IOVMF_ALLOC;
+        flags |= (da ? IOVMF_DA_FIXED : IOVMF_DA_ANON);
+
+        da = __iommu_vmap(obj, da, sgt, va, bytes, flags);
+        if (IS_ERR_VALUE(da))
+                goto err_iommu_vmap;
+
+        return da;
+
+err_iommu_vmap:
+        sgtable_drain_vmalloc(sgt);
+        sgtable_free(sgt);
+err_sgt_alloc:
+        vfree(va);
+        return da;
+}
+EXPORT_SYMBOL_GPL(iommu_vmalloc);
+
+/**
+ * iommu_vfree  -  release memory allocated by 'iommu_vmalloc()'
+ * @obj:        objective iommu
+ * @da:         iommu device virtual address
+ *
+ * Frees the iommu virtually continuous memory area starting at
+ * @da, as obtained from 'iommu_vmalloc()'.
+ */
+void iommu_vfree(struct iommu *obj, const u32 da)
+{
+        struct sg_table *sgt;
+
+        sgt = unmap_vm_area(obj, da, vfree, IOVMF_DISCONT | IOVMF_ALLOC);
+        if (!sgt)
+                dev_dbg(obj->dev, "%s: No sgt\n", __func__);
+        sgtable_free(sgt);
+}
+EXPORT_SYMBOL_GPL(iommu_vfree);
+
+static u32 __iommu_kmap(struct iommu *obj, u32 da, u32 pa, void *va,
+                          size_t bytes, u32 flags)
+{
+        struct sg_table *sgt;
+
+        sgt = sgtable_alloc(bytes, flags);
+        if (IS_ERR(sgt))
+                return PTR_ERR(sgt);
+
+        sgtable_fill_kmalloc(sgt, pa, bytes);
+
+        da = map_iommu_region(obj, da, sgt, va, bytes, flags);
+        if (IS_ERR_VALUE(da)) {
+                sgtable_drain_kmalloc(sgt);
+                sgtable_free(sgt);
+        }
+
+        return da;
+}
+
+/**
+ * iommu_kmap  -  (d)-(p)-(v) address mapper
+ * @obj:        objective iommu
+ * @da:         contiguous iommu virtual memory
+ * @pa:         contiguous physical memory
+ * @flags:      iovma and page property
+ *
+ * Creates 1-1-1 mapping and returns @da again, which can be
+ * adjusted if 'IOVMF_DA_ANON' is set.
+ */
+u32 iommu_kmap(struct iommu *obj, u32 da, u32 pa, size_t bytes,
+                 u32 flags)
+{
+        void *va;
+
+        if (!obj || !obj->dev || !bytes)
+                return -EINVAL;
+
+        bytes = PAGE_ALIGN(bytes);
+
+        va = ioremap(pa, bytes);
+        if (!va)
+                return -ENOMEM;
+
+        flags &= IOVMF_HW_MASK;
+        flags |= IOVMF_LINEAR;
+        flags |= IOVMF_MMIO;
+        flags |= (da ? IOVMF_DA_FIXED : IOVMF_DA_ANON);
+
+        da = __iommu_kmap(obj, da, pa, va, bytes, flags);
+        if (IS_ERR_VALUE(da))
+                iounmap(va);
+
+        return da;
+}
+EXPORT_SYMBOL_GPL(iommu_kmap);
+
+/**
+ * iommu_kunmap  -  release virtual mapping obtained by 'iommu_kmap()'
+ * @obj:        objective iommu
+ * @da:         iommu device virtual address
+ *
+ * Frees the iommu virtually contiguous memory area starting at
+ * @da, which was passed to and was returned by'iommu_kmap()'.
+ */
+void iommu_kunmap(struct iommu *obj, u32 da)
+{
+        struct sg_table *sgt;
+        typedef void (*func_t)(const void *);
+
+        sgt = unmap_vm_area(obj, da, (func_t)__iounmap,
+                            IOVMF_LINEAR | IOVMF_MMIO);
+        if (!sgt)
+                dev_dbg(obj->dev, "%s: No sgt\n", __func__);
+        sgtable_free(sgt);
+}
+EXPORT_SYMBOL_GPL(iommu_kunmap);
+
+/**
+ * iommu_kmalloc  -  (d)-(p)-(v) address allocator and mapper
+ * @obj:        objective iommu
+ * @da:         contiguous iommu virtual memory
+ * @bytes:      bytes for allocation
+ * @flags:      iovma and page property
+ *
+ * Allocate @bytes linearly and creates 1-1-1 mapping and returns
+ * @da again, which might be adjusted if 'IOVMF_DA_ANON' is set.
+ */
+u32 iommu_kmalloc(struct iommu *obj, u32 da, size_t bytes, u32 flags)
+{
+        void *va;
+        u32 pa;
+
+        if (!obj || !obj->dev || !bytes)
+                return -EINVAL;
+
+        bytes = PAGE_ALIGN(bytes);
+
+        va = kmalloc(bytes, GFP_KERNEL | GFP_DMA);
+        if (!va)
+                return -ENOMEM;
+        pa = virt_to_phys(va);
+
+        flags &= IOVMF_HW_MASK;
+        flags |= IOVMF_LINEAR;
+        flags |= IOVMF_ALLOC;
+        flags |= (da ? IOVMF_DA_FIXED : IOVMF_DA_ANON);
+
+        da = __iommu_kmap(obj, da, pa, va, bytes, flags);
+        if (IS_ERR_VALUE(da))
+                kfree(va);
+
+        return da;
+}
+EXPORT_SYMBOL_GPL(iommu_kmalloc);
+
+/**
+ * iommu_kfree  -  release virtual mapping obtained by 'iommu_kmalloc()'
+ * @obj:        objective iommu
+ * @da:         iommu device virtual address
+ *
+ * Frees the iommu virtually contiguous memory area starting at
+ * @da, which was passed to and was returned by'iommu_kmalloc()'.
+ */
+void iommu_kfree(struct iommu *obj, u32 da)
+{
+        struct sg_table *sgt;
+
+        sgt = unmap_vm_area(obj, da, kfree, IOVMF_LINEAR | IOVMF_ALLOC);
+        if (!sgt)
+                dev_dbg(obj->dev, "%s: No sgt\n", __func__);
+        sgtable_free(sgt);
+}
+EXPORT_SYMBOL_GPL(iommu_kfree);
+
+
+static int __init iovmm_init(void)
+{
+        const unsigned long flags = SLAB_HWCACHE_ALIGN;
+        struct kmem_cache *p;
+
+        p = kmem_cache_create("iovm_area_cache", sizeof(struct iovm_struct), 0,
+                              flags, NULL);
+        if (!p)
+                return -ENOMEM;
+        iovm_area_cachep = p;
+
+        return 0;
+}
+module_init(iovmm_init);
+
+static void __exit iovmm_exit(void)
+{
+        kmem_cache_destroy(iovm_area_cachep);
+}
+module_exit(iovmm_exit);
+
+MODULE_DESCRIPTION("omap iommu: simple virtual address space management");
+MODULE_AUTHOR("Hiroshi DOYU <Hiroshi.DOYU@nokia.com>");
+MODULE_LICENSE("GPL v2");
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 28b0a824b8cf..efa0e0111f38 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -91,11 +91,20 @@ static void omap_mcbsp_dump_reg(u8 id)
 static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id)
 {
         struct omap_mcbsp *mcbsp_tx = dev_id;
+        u16 irqst_spcr2;
 
-        dev_dbg(mcbsp_tx->dev, "TX IRQ callback : 0x%x\n",
-                OMAP_MCBSP_READ(mcbsp_tx->io_base, SPCR2));
+        irqst_spcr2 = OMAP_MCBSP_READ(mcbsp_tx->io_base, SPCR2);
+        dev_dbg(mcbsp_tx->dev, "TX IRQ callback : 0x%x\n", irqst_spcr2);
 
-        complete(&mcbsp_tx->tx_irq_completion);
+        if (irqst_spcr2 & XSYNC_ERR) {
+                dev_err(mcbsp_tx->dev, "TX Frame Sync Error! : 0x%x\n",
+                        irqst_spcr2);
+                /* Writing zero to XSYNC_ERR clears the IRQ */
+                OMAP_MCBSP_WRITE(mcbsp_tx->io_base, SPCR2,
+                        irqst_spcr2 & ~(XSYNC_ERR));
+        } else {
+                complete(&mcbsp_tx->tx_irq_completion);
+        }
 
         return IRQ_HANDLED;
 }
@@ -103,11 +112,20 @@ static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id)
 static irqreturn_t omap_mcbsp_rx_irq_handler(int irq, void *dev_id)
 {
         struct omap_mcbsp *mcbsp_rx = dev_id;
+        u16 irqst_spcr1;
 
-        dev_dbg(mcbsp_rx->dev, "RX IRQ callback : 0x%x\n",
-                OMAP_MCBSP_READ(mcbsp_rx->io_base, SPCR2));
+        irqst_spcr1 = OMAP_MCBSP_READ(mcbsp_rx->io_base, SPCR1);
+        dev_dbg(mcbsp_rx->dev, "RX IRQ callback : 0x%x\n", irqst_spcr1);
 
-        complete(&mcbsp_rx->rx_irq_completion);
+        if (irqst_spcr1 & RSYNC_ERR) {
+                dev_err(mcbsp_rx->dev, "RX Frame Sync Error! : 0x%x\n",
+                        irqst_spcr1);
+                /* Writing zero to RSYNC_ERR clears the IRQ */
+                OMAP_MCBSP_WRITE(mcbsp_rx->io_base, SPCR1,
+                        irqst_spcr1 & ~(RSYNC_ERR));
+        } else {
+                complete(&mcbsp_rx->tx_irq_completion);
+        }
 
         return IRQ_HANDLED;
 }
diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c
index 80b040fd5ca7..8d329fb20740 100644
--- a/arch/arm/plat-omap/mux.c
+++ b/arch/arm/plat-omap/mux.c
@@ -54,6 +54,9 @@ int __init_or_module omap_cfg_reg(const unsigned long index)
 {
         struct pin_config *reg;
 
+        if (cpu_is_omap44xx())
+                return 0;
+
         if (mux_cfg == NULL) {
                 printk(KERN_ERR "Pin mux table not initialized\n");
                 return -ENODEV;
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index fa5297d643d3..a5b9bcd6b108 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -6,6 +6,9 @@
  * Copyright (C) 2005 Nokia Corporation
  * Written by Tony Lindgren <tony@atomide.com>
  *
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
@@ -38,12 +41,14 @@
 #define OMAP1_SRAM_VA           VMALLOC_END
 #define OMAP2_SRAM_PA           0x40200000
 #define OMAP2_SRAM_PUB_PA       0x4020f800
-#define OMAP2_SRAM_VA           VMALLOC_END
-#define OMAP2_SRAM_PUB_VA       (VMALLOC_END + 0x800)
+#define OMAP2_SRAM_VA           0xe3000000
+#define OMAP2_SRAM_PUB_VA       (OMAP2_SRAM_VA + 0x800)
 #define OMAP3_SRAM_PA           0x40200000
 #define OMAP3_SRAM_VA           0xd7000000
 #define OMAP3_SRAM_PUB_PA       0x40208000
 #define OMAP3_SRAM_PUB_VA       0xd7008000
+#define OMAP4_SRAM_PA           0x40200000              /*0x402f0000*/
+#define OMAP4_SRAM_VA           0xd7000000              /*0xd70f0000*/
 
 #if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
 #define SRAM_BOOTLOADER_SZ      0x00
@@ -87,6 +92,10 @@ static int is_sram_locked(void)
 {
         int type = 0;
 
+        if (cpu_is_omap44xx())
+                /* Not yet supported */
+                return 0;
+
         if (cpu_is_omap242x())
                 type = omap_rev() & OMAP2_DEVICETYPE_MASK;
 
@@ -135,6 +144,10 @@ void __init omap_detect_sram(void)
                                 omap_sram_base = OMAP3_SRAM_VA;
                                 omap_sram_start = OMAP3_SRAM_PA;
                                 omap_sram_size = 0x10000; /* 64K */
+                        } else if (cpu_is_omap44xx()) {
+                                omap_sram_base = OMAP4_SRAM_VA;
+                                omap_sram_start = OMAP4_SRAM_PA;
+                                omap_sram_size = 0x8000; /* 32K */
                         } else {
                                 omap_sram_base = OMAP2_SRAM_VA;
                                 omap_sram_start = OMAP2_SRAM_PA;
@@ -201,8 +214,23 @@ void __init omap_map_sram(void)
                 base = OMAP3_SRAM_PA;
                 base = ROUND_DOWN(base, PAGE_SIZE);
                 omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
+
+                /*
+                 * SRAM must be marked as non-cached on OMAP3 since the
+                 * CORE DPLL M2 divider change code (in SRAM) runs with the
+                 * SDRAM controller disabled, and if it is marked cached,
+                 * the ARM may attempt to write cache lines back to SDRAM
+                 * which will cause the system to hang.
+                 */
+                omap_sram_io_desc[0].type = MT_MEMORY_NONCACHED;
         }
 
+        if (cpu_is_omap44xx()) {
+                omap_sram_io_desc[0].virtual = OMAP4_SRAM_VA;
+                base = OMAP4_SRAM_PA;
+                base = ROUND_DOWN(base, PAGE_SIZE);
+                omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
+        }
         omap_sram_io_desc[0].length = 1024 * 1024;      /* Use section desc */
         iotable_init(omap_sram_io_desc, ARRAY_SIZE(omap_sram_io_desc));
 
@@ -242,20 +270,13 @@ void * omap_sram_push(void * start, unsigned long size)
         return (void *)omap_sram_ceil;
 }
 
-static void omap_sram_error(void)
-{
-        panic("Uninitialized SRAM function\n");
-}
-
 #ifdef CONFIG_ARCH_OMAP1
 
 static void (*_omap_sram_reprogram_clock)(u32 dpllctl, u32 ckctl);
 
 void omap_sram_reprogram_clock(u32 dpllctl, u32 ckctl)
 {
-        if (!_omap_sram_reprogram_clock)
-                omap_sram_error();
-
+        BUG_ON(!_omap_sram_reprogram_clock);
         _omap_sram_reprogram_clock(dpllctl, ckctl);
 }
 
@@ -280,9 +301,7 @@ static void (*_omap2_sram_ddr_init)(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
 void omap2_sram_ddr_init(u32 *slow_dll_ctrl, u32 fast_dll_ctrl,
                    u32 base_cs, u32 force_unlock)
 {
-        if (!_omap2_sram_ddr_init)
-                omap_sram_error();
-
+        BUG_ON(!_omap2_sram_ddr_init);
         _omap2_sram_ddr_init(slow_dll_ctrl, fast_dll_ctrl,
                              base_cs, force_unlock);
 }
@@ -292,9 +311,7 @@ static void (*_omap2_sram_reprogram_sdrc)(u32 perf_level, u32 dll_val,
 
 void omap2_sram_reprogram_sdrc(u32 perf_level, u32 dll_val, u32 mem_type)
 {
-        if (!_omap2_sram_reprogram_sdrc)
-                omap_sram_error();
-
+        BUG_ON(!_omap2_sram_reprogram_sdrc);
         _omap2_sram_reprogram_sdrc(perf_level, dll_val, mem_type);
 }
 
@@ -302,9 +319,7 @@ static u32 (*_omap2_set_prcm)(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
 
 u32 omap2_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass)
 {
-        if (!_omap2_set_prcm)
-                omap_sram_error();
-
+        BUG_ON(!_omap2_set_prcm);
         return _omap2_set_prcm(dpll_ctrl_val, sdrc_rfr_val, bypass);
 }
 #endif
@@ -356,16 +371,15 @@ static inline int omap243x_sram_init(void)
 static u32 (*_omap3_sram_configure_core_dpll)(u32 sdrc_rfr_ctrl,
                                               u32 sdrc_actim_ctrla,
                                               u32 sdrc_actim_ctrlb,
-                                              u32 m2);
+                                              u32 m2, u32 unlock_dll);
 u32 omap3_configure_core_dpll(u32 sdrc_rfr_ctrl, u32 sdrc_actim_ctrla,
-                              u32 sdrc_actim_ctrlb, u32 m2)
+                              u32 sdrc_actim_ctrlb, u32 m2, u32 unlock_dll)
 {
-        if (!_omap3_sram_configure_core_dpll)
-                omap_sram_error();
-
+        BUG_ON(!_omap3_sram_configure_core_dpll);
         return _omap3_sram_configure_core_dpll(sdrc_rfr_ctrl,
                                                sdrc_actim_ctrla,
-                                               sdrc_actim_ctrlb, m2);
+                                               sdrc_actim_ctrlb, m2,
+                                               unlock_dll);
 }
 
 /* REVISIT: Should this be same as omap34xx_sram_init() after off-idle? */
@@ -406,6 +420,8 @@ int __init omap_sram_init(void)
                 omap243x_sram_init();
         else if (cpu_is_omap34xx())
                 omap34xx_sram_init();
+        else if (cpu_is_omap44xx())
+                omap34xx_sram_init(); /* FIXME: */
 
         return 0;
 }