11 files changed, 117 insertions, 288 deletions

diff --git a/arch/arm/plat-spear/Kconfig b/arch/arm/plat-spear/Kconfig
index 1bb3dbce8810..387655b5ce05 100644
--- a/arch/arm/plat-spear/Kconfig
+++ b/arch/arm/plat-spear/Kconfig
@@ -9,9 +9,11 @@ choice
         default ARCH_SPEAR3XX
 
 config ARCH_SPEAR3XX
-        bool "SPEAr3XX"
+        bool "ST SPEAr3xx with Device Tree"
         select ARM_VIC
         select CPU_ARM926T
+        select USE_OF
+        select PINCTRL
         help
           Supports for ARM's SPEAR3XX family
 
diff --git a/arch/arm/plat-spear/Makefile b/arch/arm/plat-spear/Makefile
index e0f2e5b9530c..7744802c83e7 100644
--- a/arch/arm/plat-spear/Makefile
+++ b/arch/arm/plat-spear/Makefile
@@ -3,6 +3,6 @@
 #
 
 # Common support
-obj-y   := clock.o restart.o time.o
+obj-y   := clock.o restart.o time.o pl080.o
 
-obj-$(CONFIG_ARCH_SPEAR3XX)     += shirq.o padmux.o
+obj-$(CONFIG_ARCH_SPEAR3XX)     += shirq.o
diff --git a/arch/arm/plat-spear/include/plat/debug-macro.S b/arch/arm/plat-spear/include/plat/debug-macro.S
index 02b160a1ec9b..ab3de721c5db 100644
--- a/arch/arm/plat-spear/include/plat/debug-macro.S
+++ b/arch/arm/plat-spear/include/plat/debug-macro.S
@@ -12,7 +12,7 @@
  */
 
 #include <linux/amba/serial.h>
-#include <mach/hardware.h>
+#include <mach/spear.h>
 
                 .macro  addruart, rp, rv, tmp
                 mov     \rp, #SPEAR_DBG_UART_BASE               @ Physical base
diff --git a/arch/arm/plat-spear/include/plat/hardware.h b/arch/arm/plat-spear/include/plat/hardware.h
deleted file mode 100644
index 70187d763e26..000000000000
--- a/arch/arm/plat-spear/include/plat/hardware.h
+++ /dev/null
@@ -1,17 +0,0 @@
-/*
- * arch/arm/plat-spear/include/plat/hardware.h
- *
- * Hardware definitions for SPEAr
- *
- * Copyright (C) 2010 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.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.
- */
-
-#ifndef __PLAT_HARDWARE_H
-#define __PLAT_HARDWARE_H
-
-#endif /* __PLAT_HARDWARE_H */
diff --git a/arch/arm/plat-spear/include/plat/padmux.h b/arch/arm/plat-spear/include/plat/padmux.h
deleted file mode 100644
index 877f3adcf610..000000000000
--- a/arch/arm/plat-spear/include/plat/padmux.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * arch/arm/plat-spear/include/plat/padmux.h
- *
- * SPEAr platform specific gpio pads muxing file
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.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.
- */
-
-#ifndef __PLAT_PADMUX_H
-#define __PLAT_PADMUX_H
-
-#include <linux/types.h>
-
-/*
- * struct pmx_reg: configuration structure for mode reg and mux reg
- *
- * offset: offset of mode reg
- * mask: mask of mode reg
- */
-struct pmx_reg {
-        u32 offset;
-        u32 mask;
-};
-
-/*
- * struct pmx_dev_mode: configuration structure every group of modes of a device
- *
- * ids: all modes for this configuration
- * mask: mask for supported mode
- */
-struct pmx_dev_mode {
-        u32 ids;
-        u32 mask;
-};
-
-/*
- * struct pmx_mode: mode definition structure
- *
- * name: mode name
- * mask: mode mask
- */
-struct pmx_mode {
-        char *name;
-        u32 id;
-        u32 mask;
-};
-
-/*
- * struct pmx_dev: device definition structure
- *
- * name: device name
- * modes: device configuration array for different modes supported
- * mode_count: size of modes array
- * is_active: is peripheral active/enabled
- * enb_on_reset: if 1, mask bits to be cleared in reg otherwise to be set in reg
- */
-struct pmx_dev {
-        char *name;
-        struct pmx_dev_mode *modes;
-        u8 mode_count;
-        bool is_active;
-        bool enb_on_reset;
-};
-
-/*
- * struct pmx_driver: driver definition structure
- *
- * mode: mode to be set
- * devs: array of pointer to pmx devices
- * devs_count: ARRAY_SIZE of devs
- * base: base address of soc config registers
- * mode_reg: structure of mode config register
- * mux_reg: structure of device mux config register
- */
-struct pmx_driver {
-        struct pmx_mode *mode;
-        struct pmx_dev **devs;
-        u8 devs_count;
-        u32 *base;
-        struct pmx_reg mode_reg;
-        struct pmx_reg mux_reg;
-};
-
-/* pmx functions */
-int pmx_register(struct pmx_driver *driver);
-
-#endif /* __PLAT_PADMUX_H */
diff --git a/arch/arm/plat-spear/include/plat/pl080.h b/arch/arm/plat-spear/include/plat/pl080.h
new file mode 100644
index 000000000000..e14a3e4932f9
--- /dev/null
+++ b/arch/arm/plat-spear/include/plat/pl080.h
@@ -0,0 +1,21 @@
+/*
+ * arch/arm/plat-spear/include/plat/pl080.h
+ *
+ * DMAC pl080 definitions for SPEAr platform
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.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.
+ */
+
+#ifndef __PLAT_PL080_H
+#define __PLAT_PL080_H
+
+struct pl08x_dma_chan;
+int pl080_get_signal(struct pl08x_dma_chan *ch);
+void pl080_put_signal(struct pl08x_dma_chan *ch);
+
+#endif /* __PLAT_PL080_H */
diff --git a/arch/arm/plat-spear/include/plat/uncompress.h b/arch/arm/plat-spear/include/plat/uncompress.h
index 1bf84527aee4..6dd455bafdfd 100644
--- a/arch/arm/plat-spear/include/plat/uncompress.h
+++ b/arch/arm/plat-spear/include/plat/uncompress.h
@@ -13,7 +13,7 @@
 
 #include <linux/io.h>
 #include <linux/amba/serial.h>
-#include <mach/hardware.h>
+#include <mach/spear.h>
 
 #ifndef __PLAT_UNCOMPRESS_H
 #define __PLAT_UNCOMPRESS_H
diff --git a/arch/arm/plat-spear/padmux.c b/arch/arm/plat-spear/padmux.c
deleted file mode 100644
index 555eec6dc1cb..000000000000
--- a/arch/arm/plat-spear/padmux.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * arch/arm/plat-spear/include/plat/padmux.c
- *
- * SPEAr platform specific gpio pads muxing source file
- *
- * Copyright (C) 2009 ST Microelectronics
- * Viresh Kumar<viresh.kumar@st.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.
- */
-
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/slab.h>
-#include <plat/padmux.h>
-
-/*
- * struct pmx: pmx definition structure
- *
- * base: base address of configuration registers
- * mode_reg: mode configurations
- * mux_reg: muxing configurations
- * active_mode: pointer to current active mode
- */
-struct pmx {
-        u32 base;
-        struct pmx_reg mode_reg;
-        struct pmx_reg mux_reg;
-        struct pmx_mode *active_mode;
-};
-
-static struct pmx *pmx;
-
-/**
- * pmx_mode_set - Enables an multiplexing mode
- * @mode - pointer to pmx mode
- *
- * It will set mode of operation in hardware.
- * Returns -ve on Err otherwise 0
- */
-static int pmx_mode_set(struct pmx_mode *mode)
-{
-        u32 val;
-
-        if (!mode->name)
-                return -EFAULT;
-
-        pmx->active_mode = mode;
-
-        val = readl(pmx->base + pmx->mode_reg.offset);
-        val &= ~pmx->mode_reg.mask;
-        val |= mode->mask & pmx->mode_reg.mask;
-        writel(val, pmx->base + pmx->mode_reg.offset);
-
-        return 0;
-}
-
-/**
- * pmx_devs_enable - Enables list of devices
- * @devs - pointer to pmx device array
- * @count - number of devices to enable
- *
- * It will enable pads for all required peripherals once and only once.
- * If peripheral is not supported by current mode then request is rejected.
- * Conflicts between peripherals are not handled and peripherals will be
- * enabled in the order they are present in pmx_dev array.
- * In case of conflicts last peripheral enabled will be present.
- * Returns -ve on Err otherwise 0
- */
-static int pmx_devs_enable(struct pmx_dev **devs, u8 count)
-{
-        u32 val, i, mask;
-
-        if (!count)
-                return -EINVAL;
-
-        val = readl(pmx->base + pmx->mux_reg.offset);
-        for (i = 0; i < count; i++) {
-                u8 j = 0;
-
-                if (!devs[i]->name || !devs[i]->modes) {
-                        printk(KERN_ERR "padmux: dev name or modes is null\n");
-                        continue;
-                }
-                /* check if peripheral exists in active mode */
-                if (pmx->active_mode) {
-                        bool found = false;
-                        for (j = 0; j < devs[i]->mode_count; j++) {
-                                if (devs[i]->modes[j].ids &
-                                                pmx->active_mode->id) {
-                                        found = true;
-                                        break;
-                                }
-                        }
-                        if (found == false) {
-                                printk(KERN_ERR "%s device not available in %s"\
-                                                "mode\n", devs[i]->name,
-                                                pmx->active_mode->name);
-                                continue;
-                        }
-                }
-
-                /* enable peripheral */
-                mask = devs[i]->modes[j].mask & pmx->mux_reg.mask;
-                if (devs[i]->enb_on_reset)
-                        val &= ~mask;
-                else
-                        val |= mask;
-
-                devs[i]->is_active = true;
-        }
-        writel(val, pmx->base + pmx->mux_reg.offset);
-        kfree(pmx);
-
-        /* this will ensure that multiplexing can't be changed now */
-        pmx = (struct pmx *)-1;
-
-        return 0;
-}
-
-/**
- * pmx_register - registers a platform requesting pad mux feature
- * @driver - pointer to driver structure containing driver specific parameters
- *
- * Also this must be called only once. This will allocate memory for pmx
- * structure, will call pmx_mode_set, will call pmx_devs_enable.
- * Returns -ve on Err otherwise 0
- */
-int pmx_register(struct pmx_driver *driver)
-{
-        int ret = 0;
-
-        if (pmx)
-                return -EPERM;
-        if (!driver->base || !driver->devs)
-                return -EFAULT;
-
-        pmx = kzalloc(sizeof(*pmx), GFP_KERNEL);
-        if (!pmx)
-                return -ENOMEM;
-
-        pmx->base = (u32)driver->base;
-        pmx->mode_reg.offset = driver->mode_reg.offset;
-        pmx->mode_reg.mask = driver->mode_reg.mask;
-        pmx->mux_reg.offset = driver->mux_reg.offset;
-        pmx->mux_reg.mask = driver->mux_reg.mask;
-
-        /* choose mode to enable */
-        if (driver->mode) {
-                ret = pmx_mode_set(driver->mode);
-                if (ret)
-                        goto pmx_fail;
-        }
-        ret = pmx_devs_enable(driver->devs, driver->devs_count);
-        if (ret)
-                goto pmx_fail;
-
-        return 0;
-
-pmx_fail:
-        return ret;
-}
diff --git a/arch/arm/plat-spear/pl080.c b/arch/arm/plat-spear/pl080.c
new file mode 100644
index 000000000000..a56a067717c1
--- /dev/null
+++ b/arch/arm/plat-spear/pl080.c
@@ -0,0 +1,80 @@
+/*
+ * arch/arm/plat-spear/pl080.c
+ *
+ * DMAC pl080 definitions for SPEAr platform
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.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.
+ */
+
+#include <linux/amba/pl08x.h>
+#include <linux/amba/bus.h>
+#include <linux/bug.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/spinlock_types.h>
+#include <mach/spear.h>
+#include <mach/misc_regs.h>
+
+static spinlock_t lock = __SPIN_LOCK_UNLOCKED(x);
+
+struct {
+        unsigned char busy;
+        unsigned char val;
+} signals[16] = {{0, 0}, };
+
+int pl080_get_signal(struct pl08x_dma_chan *ch)
+{
+        const struct pl08x_channel_data *cd = ch->cd;
+        unsigned int signal = cd->min_signal, val;
+        unsigned long flags;
+
+        spin_lock_irqsave(&lock, flags);
+
+        /* Return if signal is already acquired by somebody else */
+        if (signals[signal].busy &&
+                        (signals[signal].val != cd->muxval)) {
+                spin_unlock_irqrestore(&lock, flags);
+                return -EBUSY;
+        }
+
+        /* If acquiring for the first time, configure it */
+        if (!signals[signal].busy) {
+                val = readl(DMA_CHN_CFG);
+
+                /*
+                 * Each request line has two bits in DMA_CHN_CFG register. To
+                 * goto the bits of current request line, do left shift of
+                 * value by 2 * signal number.
+                 */
+                val &= ~(0x3 << (signal * 2));
+                val |= cd->muxval << (signal * 2);
+                writel(val, DMA_CHN_CFG);
+        }
+
+        signals[signal].busy++;
+        signals[signal].val = cd->muxval;
+        spin_unlock_irqrestore(&lock, flags);
+
+        return signal;
+}
+
+void pl080_put_signal(struct pl08x_dma_chan *ch)
+{
+        const struct pl08x_channel_data *cd = ch->cd;
+        unsigned long flags;
+
+        spin_lock_irqsave(&lock, flags);
+
+        /* if signal is not used */
+        if (!signals[cd->min_signal].busy)
+                BUG();
+
+        signals[cd->min_signal].busy--;
+
+        spin_unlock_irqrestore(&lock, flags);
+}
diff --git a/arch/arm/plat-spear/restart.c b/arch/arm/plat-spear/restart.c
index 16f203e78d89..4471a232713a 100644
--- a/arch/arm/plat-spear/restart.c
+++ b/arch/arm/plat-spear/restart.c
@@ -13,7 +13,7 @@
 #include <linux/io.h>
 #include <asm/system_misc.h>
 #include <asm/hardware/sp810.h>
-#include <mach/hardware.h>
+#include <mach/spear.h>
 #include <mach/generic.h>
 
 void spear_restart(char mode, const char *cmd)
diff --git a/arch/arm/plat-spear/time.c b/arch/arm/plat-spear/time.c
index abb5bdecd509..a3164d1647fd 100644
--- a/arch/arm/plat-spear/time.c
+++ b/arch/arm/plat-spear/time.c
@@ -15,14 +15,13 @@
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/ioport.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/time.h>
 #include <linux/irq.h>
 #include <asm/mach/time.h>
 #include <mach/generic.h>
-#include <mach/hardware.h>
-#include <mach/irqs.h>
 
 /*
  * We would use TIMER0 and TIMER1 as clockevent and clocksource.
@@ -175,7 +174,7 @@ static struct irqaction spear_timer_irq = {
         .handler = spear_timer_interrupt
 };
 
-static void __init spear_clockevent_init(void)
+static void __init spear_clockevent_init(int irq)
 {
         u32 tick_rate;
 
@@ -195,19 +194,19 @@ static void __init spear_clockevent_init(void)
 
         clockevents_register_device(&clkevt);
 
-        setup_irq(SPEAR_GPT0_CHAN0_IRQ, &spear_timer_irq);
+        setup_irq(irq, &spear_timer_irq);
 }
 
-void __init spear_setup_timer(void)
+void __init spear_setup_timer(resource_size_t base, int irq)
 {
         int ret;
 
-        if (!request_mem_region(SPEAR_GPT0_BASE, SZ_1K, "gpt0")) {
+        if (!request_mem_region(base, SZ_1K, "gpt0")) {
                 pr_err("%s:cannot get IO addr\n", __func__);
                 return;
         }
 
-        gpt_base = (void __iomem *)ioremap(SPEAR_GPT0_BASE, SZ_1K);
+        gpt_base = ioremap(base, SZ_1K);
         if (!gpt_base) {
                 pr_err("%s:ioremap failed for gpt\n", __func__);
                 goto err_mem;
@@ -225,7 +224,7 @@ void __init spear_setup_timer(void)
                 goto err_clk;
         }
 
-        spear_clockevent_init();
+        spear_clockevent_init(irq);
         spear_clocksource_init();
 
         return;
@@ -235,5 +234,5 @@ err_clk:
 err_iomap:
         iounmap(gpt_base);
 err_mem:
-        release_mem_region(SPEAR_GPT0_BASE, SZ_1K);
+        release_mem_region(base, SZ_1K);
 }