Merge branch 'pm-next' of ssh://master.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into omap-for-linus

15 files changed, 696 insertions, 230 deletions

diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index eb2504a300c2..826cb0980054 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -87,6 +87,7 @@ obj-$(CONFIG_ARCH_OMAP2430)		+= opp2430_data.o
 obj-$(CONFIG_ARCH_OMAP2420)             += omap_hwmod_2420_data.o
 obj-$(CONFIG_ARCH_OMAP2430)             += omap_hwmod_2430_data.o
 obj-$(CONFIG_ARCH_OMAP3)                += omap_hwmod_3xxx_data.o
+obj-$(CONFIG_ARCH_OMAP4)                += omap_hwmod_44xx_data.o
 
 # EMU peripherals
 obj-$(CONFIG_OMAP3_EMU)                 += emu.o
diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c
index 5d80cb897489..6fb61b1a0d46 100644
--- a/arch/arm/mach-omap2/clockdomain.c
+++ b/arch/arm/mach-omap2/clockdomain.c
@@ -258,97 +258,6 @@ static void _omap2_clkdm_set_hwsup(struct clockdomain *clkdm, int enable)
 
 }
 
-/**
- * _init_wkdep_usecount - initialize wkdep usecounts to match hardware
- * @clkdm: clockdomain to initialize wkdep usecounts
- *
- * Initialize the wakeup dependency usecount variables for clockdomain @clkdm.
- * If a wakeup dependency is present in the hardware, the usecount will be
- * set to 1; otherwise, it will be set to 0.  Software should clear all
- * software wakeup dependencies prior to calling this function if it wishes
- * to ensure that all usecounts start at 0.  No return value.
- */
-static void _init_wkdep_usecount(struct clockdomain *clkdm)
-{
-        u32 v;
-        struct clkdm_dep *cd;
-
-        if (!clkdm->wkdep_srcs)
-                return;
-
-        for (cd = clkdm->wkdep_srcs; cd->clkdm_name; cd++) {
-                if (!omap_chip_is(cd->omap_chip))
-                        continue;
-
-                if (!cd->clkdm && cd->clkdm_name)
-                        cd->clkdm = _clkdm_lookup(cd->clkdm_name);
-
-                if (!cd->clkdm) {
-                        WARN(!cd->clkdm, "clockdomain: %s: wkdep clkdm %s not "
-                             "found\n", clkdm->name, cd->clkdm_name);
-                        continue;
-                }
-
-                v = prm_read_mod_bits_shift(clkdm->pwrdm.ptr->prcm_offs,
-                                            PM_WKDEP,
-                                            (1 << cd->clkdm->dep_bit));
-
-                if (v)
-                        pr_debug("clockdomain: %s: wakeup dependency already "
-                                 "set to wake up when %s wakes\n",
-                                 clkdm->name, cd->clkdm->name);
-
-                atomic_set(&cd->wkdep_usecount, (v) ? 1 : 0);
-        }
-}
-
-/**
- * _init_sleepdep_usecount - initialize sleepdep usecounts to match hardware
- * @clkdm: clockdomain to initialize sleepdep usecounts
- *
- * Initialize the sleep dependency usecount variables for clockdomain @clkdm.
- * If a sleep dependency is present in the hardware, the usecount will be
- * set to 1; otherwise, it will be set to 0.  Software should clear all
- * software sleep dependencies prior to calling this function if it wishes
- * to ensure that all usecounts start at 0.  No return value.
- */
-static void _init_sleepdep_usecount(struct clockdomain *clkdm)
-{
-        u32 v;
-        struct clkdm_dep *cd;
-
-        if (!cpu_is_omap34xx())
-                return;
-
-        if (!clkdm->sleepdep_srcs)
-                return;
-
-        for (cd = clkdm->sleepdep_srcs; cd->clkdm_name; cd++) {
-                if (!omap_chip_is(cd->omap_chip))
-                        continue;
-
-                if (!cd->clkdm && cd->clkdm_name)
-                        cd->clkdm = _clkdm_lookup(cd->clkdm_name);
-
-                if (!cd->clkdm) {
-                        WARN(!cd->clkdm, "clockdomain: %s: sleepdep clkdm %s "
-                             "not found\n", clkdm->name, cd->clkdm_name);
-                        continue;
-                }
-
-                v = prm_read_mod_bits_shift(clkdm->pwrdm.ptr->prcm_offs,
-                                            OMAP3430_CM_SLEEPDEP,
-                                            (1 << cd->clkdm->dep_bit));
-
-                if (v)
-                        pr_debug("clockdomain: %s: sleep dependency already "
-                                 "set to prevent from idling until %s "
-                                 "idles\n", clkdm->name, cd->clkdm->name);
-
-                atomic_set(&cd->sleepdep_usecount, (v) ? 1 : 0);
-        }
-};
-
 /* Public functions */
 
 /**
@@ -379,12 +288,17 @@ void clkdm_init(struct clockdomain **clkdms,
                         _autodep_lookup(autodep);
 
         /*
-         * Ensure that the *dep_usecount registers reflect the current
-         * state of the PRCM.
+         * Put all clockdomains into software-supervised mode; PM code
+         * should later enable hardware-supervised mode as appropriate
          */
         list_for_each_entry(clkdm, &clkdm_list, node) {
-                _init_wkdep_usecount(clkdm);
-                _init_sleepdep_usecount(clkdm);
+                if (clkdm->flags & CLKDM_CAN_FORCE_WAKEUP)
+                        omap2_clkdm_wakeup(clkdm);
+                else if (clkdm->flags & CLKDM_CAN_DISABLE_AUTO)
+                        omap2_clkdm_deny_idle(clkdm);
+
+                clkdm_clear_all_wkdeps(clkdm);
+                clkdm_clear_all_sleepdeps(clkdm);
         }
 }
 
@@ -592,6 +506,9 @@ int clkdm_clear_all_wkdeps(struct clockdomain *clkdm)
                 if (!omap_chip_is(cd->omap_chip))
                         continue;
 
+                if (!cd->clkdm && cd->clkdm_name)
+                        cd->clkdm = _clkdm_lookup(cd->clkdm_name);
+
                 /* PRM accesses are slow, so minimize them */
                 mask |= 1 << cd->clkdm->dep_bit;
                 atomic_set(&cd->wkdep_usecount, 0);
@@ -752,6 +669,9 @@ int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm)
                 if (!omap_chip_is(cd->omap_chip))
                         continue;
 
+                if (!cd->clkdm && cd->clkdm_name)
+                        cd->clkdm = _clkdm_lookup(cd->clkdm_name);
+
                 /* PRM accesses are slow, so minimize them */
                 mask |= 1 << cd->clkdm->dep_bit;
                 atomic_set(&cd->sleepdep_usecount, 0);
diff --git a/arch/arm/mach-omap2/cpuidle34xx.c b/arch/arm/mach-omap2/cpuidle34xx.c
index 3d3d035db9af..8ea012ef0b5a 100644
--- a/arch/arm/mach-omap2/cpuidle34xx.c
+++ b/arch/arm/mach-omap2/cpuidle34xx.c
@@ -60,7 +60,8 @@ struct omap3_processor_cx {
 
 struct omap3_processor_cx omap3_power_states[OMAP3_MAX_STATES];
 struct omap3_processor_cx current_cx_state;
-struct powerdomain *mpu_pd, *core_pd;
+struct powerdomain *mpu_pd, *core_pd, *per_pd;
+struct powerdomain *cam_pd;
 
 /*
  * The latencies/thresholds for various C states have
@@ -233,14 +234,62 @@ static int omap3_enter_idle_bm(struct cpuidle_device *dev,
                                struct cpuidle_state *state)
 {
         struct cpuidle_state *new_state = next_valid_state(dev, state);
+        u32 core_next_state, per_next_state = 0, per_saved_state = 0;
+        u32 cam_state;
+        struct omap3_processor_cx *cx;
+        int ret;
 
         if ((state->flags & CPUIDLE_FLAG_CHECK_BM) && omap3_idle_bm_check()) {
                 BUG_ON(!dev->safe_state);
                 new_state = dev->safe_state;
+                goto select_state;
+        }
+
+        cx = cpuidle_get_statedata(state);
+        core_next_state = cx->core_state;
+
+        /*
+         * FIXME: we currently manage device-specific idle states
+         *        for PER and CORE in combination with CPU-specific
+         *        idle states.  This is wrong, and device-specific
+         *        idle managment needs to be separated out into 
+         *        its own code.
+         */
+
+        /*
+         * Prevent idle completely if CAM is active.
+         * CAM does not have wakeup capability in OMAP3.
+         */
+        cam_state = pwrdm_read_pwrst(cam_pd);
+        if (cam_state == PWRDM_POWER_ON) {
+                new_state = dev->safe_state;
+                goto select_state;
+        }
+
+        /*
+         * Prevent PER off if CORE is not in retention or off as this
+         * would disable PER wakeups completely.
+         */
+        per_next_state = per_saved_state = pwrdm_read_next_pwrst(per_pd);
+        if ((per_next_state == PWRDM_POWER_OFF) &&
+            (core_next_state > PWRDM_POWER_RET)) {
+                per_next_state = PWRDM_POWER_RET;
+                pwrdm_set_next_pwrst(per_pd, per_next_state);
         }
 
+        /* Are we changing PER target state? */
+        if (per_next_state != per_saved_state)
+                pwrdm_set_next_pwrst(per_pd, per_next_state);
+
+select_state:
         dev->last_state = new_state;
-        return omap3_enter_idle(dev, new_state);
+        ret = omap3_enter_idle(dev, new_state);
+
+        /* Restore original PER state if it was modified */
+        if (per_next_state != per_saved_state)
+                pwrdm_set_next_pwrst(per_pd, per_saved_state);
+
+        return ret;
 }
 
 DEFINE_PER_CPU(struct cpuidle_device, omap3_idle_dev);
@@ -328,7 +377,8 @@ void omap_init_power_states(void)
                         cpuidle_params_table[OMAP3_STATE_C2].threshold;
         omap3_power_states[OMAP3_STATE_C2].mpu_state = PWRDM_POWER_ON;
         omap3_power_states[OMAP3_STATE_C2].core_state = PWRDM_POWER_ON;
-        omap3_power_states[OMAP3_STATE_C2].flags = CPUIDLE_FLAG_TIME_VALID;
+        omap3_power_states[OMAP3_STATE_C2].flags = CPUIDLE_FLAG_TIME_VALID |
+                                CPUIDLE_FLAG_CHECK_BM;
 
         /* C3 . MPU CSWR + Core inactive */
         omap3_power_states[OMAP3_STATE_C3].valid =
@@ -426,6 +476,8 @@ int __init omap3_idle_init(void)
 
         mpu_pd = pwrdm_lookup("mpu_pwrdm");
         core_pd = pwrdm_lookup("core_pwrdm");
+        per_pd = pwrdm_lookup("per_pwrdm");
+        cam_pd = pwrdm_lookup("cam_pwrdm");
 
         omap_init_power_states();
         cpuidle_register_driver(&omap3_idle_driver);
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index b9ea70bce563..490d87082fad 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -323,6 +323,9 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0,
                 omap2430_hwmod_init();
         else if (cpu_is_omap34xx())
                 omap3xxx_hwmod_init();
+        else if (cpu_is_omap44xx())
+                omap44xx_hwmod_init();
+
         /* The OPP tables have to be registered before a clk init */
         omap_pm_if_early_init(mpu_opps, dsp_opps, l3_opps);
 
@@ -342,9 +345,7 @@ void __init omap2_init_common_hw(struct omap_sdrc_params *sdrc_cs0,
 #ifndef CONFIG_PM_RUNTIME
         skip_setup_idle = 1;
 #endif
-        if (cpu_is_omap24xx() || cpu_is_omap34xx())   /* FIXME: OMAP4 */
-                omap_hwmod_late_init(skip_setup_idle);
-
+        omap_hwmod_late_init(skip_setup_idle);
         if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
                 omap2_sdrc_init(sdrc_cs0, sdrc_cs1);
                 _omap2_init_reprogram_sdrc();
diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
new file mode 100644
index 000000000000..e20b0eebc6d9
--- /dev/null
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -0,0 +1,482 @@
+/*
+ * Hardware modules present on the OMAP44xx chips
+ *
+ * Copyright (C) 2009-2010 Texas Instruments, Inc.
+ * Copyright (C) 2009-2010 Nokia Corporation
+ *
+ * Paul Walmsley
+ * Benoit Cousson
+ *
+ * This file is automatically generated from the OMAP hardware databases.
+ * We respectfully ask that any modifications to this file be coordinated
+ * with the public linux-omap@vger.kernel.org mailing list and the
+ * authors above to ensure that the autogeneration scripts are kept
+ * up-to-date with the file contents.
+ *
+ * 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/io.h>
+
+#include <plat/omap_hwmod.h>
+#include <plat/cpu.h>
+
+#include "omap_hwmod_common_data.h"
+
+#include "cm.h"
+#include "prm-regbits-44xx.h"
+
+/* Base offset for all OMAP4 interrupts external to MPUSS */
+#define OMAP44XX_IRQ_GIC_START  32
+
+/* Base offset for all OMAP4 dma requests */
+#define OMAP44XX_DMA_REQ_START  1
+
+/* Backward references (IPs with Bus Master capability) */
+static struct omap_hwmod omap44xx_dmm_hwmod;
+static struct omap_hwmod omap44xx_emif_fw_hwmod;
+static struct omap_hwmod omap44xx_l3_instr_hwmod;
+static struct omap_hwmod omap44xx_l3_main_1_hwmod;
+static struct omap_hwmod omap44xx_l3_main_2_hwmod;
+static struct omap_hwmod omap44xx_l3_main_3_hwmod;
+static struct omap_hwmod omap44xx_l4_abe_hwmod;
+static struct omap_hwmod omap44xx_l4_cfg_hwmod;
+static struct omap_hwmod omap44xx_l4_per_hwmod;
+static struct omap_hwmod omap44xx_l4_wkup_hwmod;
+static struct omap_hwmod omap44xx_mpu_hwmod;
+static struct omap_hwmod omap44xx_mpu_private_hwmod;
+
+/*
+ * Interconnects omap_hwmod structures
+ * hwmods that compose the global OMAP interconnect
+ */
+
+/*
+ * 'dmm' class
+ * instance(s): dmm
+ */
+static struct omap_hwmod_class omap44xx_dmm_hwmod_class = {
+        .name = "dmm",
+};
+
+/* dmm interface data */
+/* l3_main_1 -> dmm */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_1__dmm = {
+        .master         = &omap44xx_l3_main_1_hwmod,
+        .slave          = &omap44xx_dmm_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* mpu -> dmm */
+static struct omap_hwmod_ocp_if omap44xx_mpu__dmm = {
+        .master         = &omap44xx_mpu_hwmod,
+        .slave          = &omap44xx_dmm_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* dmm slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_dmm_slaves[] = {
+        &omap44xx_l3_main_1__dmm,
+        &omap44xx_mpu__dmm,
+};
+
+static struct omap_hwmod_irq_info omap44xx_dmm_irqs[] = {
+        { .irq = 113 + OMAP44XX_IRQ_GIC_START },
+};
+
+static struct omap_hwmod omap44xx_dmm_hwmod = {
+        .name           = "dmm",
+        .class          = &omap44xx_dmm_hwmod_class,
+        .slaves         = omap44xx_dmm_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_dmm_slaves),
+        .mpu_irqs       = omap44xx_dmm_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap44xx_dmm_irqs),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/*
+ * 'emif_fw' class
+ * instance(s): emif_fw
+ */
+static struct omap_hwmod_class omap44xx_emif_fw_hwmod_class = {
+        .name = "emif_fw",
+};
+
+/* emif_fw interface data */
+/* dmm -> emif_fw */
+static struct omap_hwmod_ocp_if omap44xx_dmm__emif_fw = {
+        .master         = &omap44xx_dmm_hwmod,
+        .slave          = &omap44xx_emif_fw_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4_cfg -> emif_fw */
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__emif_fw = {
+        .master         = &omap44xx_l4_cfg_hwmod,
+        .slave          = &omap44xx_emif_fw_hwmod,
+        .clk            = "l4_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* emif_fw slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_emif_fw_slaves[] = {
+        &omap44xx_dmm__emif_fw,
+        &omap44xx_l4_cfg__emif_fw,
+};
+
+static struct omap_hwmod omap44xx_emif_fw_hwmod = {
+        .name           = "emif_fw",
+        .class          = &omap44xx_emif_fw_hwmod_class,
+        .slaves         = omap44xx_emif_fw_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_emif_fw_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/*
+ * 'l3' class
+ * instance(s): l3_instr, l3_main_1, l3_main_2, l3_main_3
+ */
+static struct omap_hwmod_class omap44xx_l3_hwmod_class = {
+        .name = "l3",
+};
+
+/* l3_instr interface data */
+/* l3_main_3 -> l3_instr */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_3__l3_instr = {
+        .master         = &omap44xx_l3_main_3_hwmod,
+        .slave          = &omap44xx_l3_instr_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l3_instr slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_l3_instr_slaves[] = {
+        &omap44xx_l3_main_3__l3_instr,
+};
+
+static struct omap_hwmod omap44xx_l3_instr_hwmod = {
+        .name           = "l3_instr",
+        .class          = &omap44xx_l3_hwmod_class,
+        .slaves         = omap44xx_l3_instr_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_l3_instr_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* l3_main_2 -> l3_main_1 */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_2__l3_main_1 = {
+        .master         = &omap44xx_l3_main_2_hwmod,
+        .slave          = &omap44xx_l3_main_1_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4_cfg -> l3_main_1 */
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__l3_main_1 = {
+        .master         = &omap44xx_l4_cfg_hwmod,
+        .slave          = &omap44xx_l3_main_1_hwmod,
+        .clk            = "l4_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* mpu -> l3_main_1 */
+static struct omap_hwmod_ocp_if omap44xx_mpu__l3_main_1 = {
+        .master         = &omap44xx_mpu_hwmod,
+        .slave          = &omap44xx_l3_main_1_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l3_main_1 slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_l3_main_1_slaves[] = {
+        &omap44xx_l3_main_2__l3_main_1,
+        &omap44xx_l4_cfg__l3_main_1,
+        &omap44xx_mpu__l3_main_1,
+};
+
+static struct omap_hwmod omap44xx_l3_main_1_hwmod = {
+        .name           = "l3_main_1",
+        .class          = &omap44xx_l3_hwmod_class,
+        .slaves         = omap44xx_l3_main_1_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_l3_main_1_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* l3_main_2 interface data */
+/* l3_main_1 -> l3_main_2 */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_1__l3_main_2 = {
+        .master         = &omap44xx_l3_main_1_hwmod,
+        .slave          = &omap44xx_l3_main_2_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4_cfg -> l3_main_2 */
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__l3_main_2 = {
+        .master         = &omap44xx_l4_cfg_hwmod,
+        .slave          = &omap44xx_l3_main_2_hwmod,
+        .clk            = "l4_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l3_main_2 slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_l3_main_2_slaves[] = {
+        &omap44xx_l3_main_1__l3_main_2,
+        &omap44xx_l4_cfg__l3_main_2,
+};
+
+static struct omap_hwmod omap44xx_l3_main_2_hwmod = {
+        .name           = "l3_main_2",
+        .class          = &omap44xx_l3_hwmod_class,
+        .slaves         = omap44xx_l3_main_2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_l3_main_2_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* l3_main_3 interface data */
+/* l3_main_1 -> l3_main_3 */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_1__l3_main_3 = {
+        .master         = &omap44xx_l3_main_1_hwmod,
+        .slave          = &omap44xx_l3_main_3_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l3_main_2 -> l3_main_3 */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_2__l3_main_3 = {
+        .master         = &omap44xx_l3_main_2_hwmod,
+        .slave          = &omap44xx_l3_main_3_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4_cfg -> l3_main_3 */
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__l3_main_3 = {
+        .master         = &omap44xx_l4_cfg_hwmod,
+        .slave          = &omap44xx_l3_main_3_hwmod,
+        .clk            = "l4_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l3_main_3 slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_l3_main_3_slaves[] = {
+        &omap44xx_l3_main_1__l3_main_3,
+        &omap44xx_l3_main_2__l3_main_3,
+        &omap44xx_l4_cfg__l3_main_3,
+};
+
+static struct omap_hwmod omap44xx_l3_main_3_hwmod = {
+        .name           = "l3_main_3",
+        .class          = &omap44xx_l3_hwmod_class,
+        .slaves         = omap44xx_l3_main_3_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_l3_main_3_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/*
+ * 'l4' class
+ * instance(s): l4_abe, l4_cfg, l4_per, l4_wkup
+ */
+static struct omap_hwmod_class omap44xx_l4_hwmod_class = {
+        .name = "l4",
+};
+
+/* l4_abe interface data */
+/* l3_main_1 -> l4_abe */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_1__l4_abe = {
+        .master         = &omap44xx_l3_main_1_hwmod,
+        .slave          = &omap44xx_l4_abe_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* mpu -> l4_abe */
+static struct omap_hwmod_ocp_if omap44xx_mpu__l4_abe = {
+        .master         = &omap44xx_mpu_hwmod,
+        .slave          = &omap44xx_l4_abe_hwmod,
+        .clk            = "ocp_abe_iclk",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4_abe slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_l4_abe_slaves[] = {
+        &omap44xx_l3_main_1__l4_abe,
+        &omap44xx_mpu__l4_abe,
+};
+
+static struct omap_hwmod omap44xx_l4_abe_hwmod = {
+        .name           = "l4_abe",
+        .class          = &omap44xx_l4_hwmod_class,
+        .slaves         = omap44xx_l4_abe_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_l4_abe_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* l4_cfg interface data */
+/* l3_main_1 -> l4_cfg */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_1__l4_cfg = {
+        .master         = &omap44xx_l3_main_1_hwmod,
+        .slave          = &omap44xx_l4_cfg_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4_cfg slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_l4_cfg_slaves[] = {
+        &omap44xx_l3_main_1__l4_cfg,
+};
+
+static struct omap_hwmod omap44xx_l4_cfg_hwmod = {
+        .name           = "l4_cfg",
+        .class          = &omap44xx_l4_hwmod_class,
+        .slaves         = omap44xx_l4_cfg_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_l4_cfg_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* l4_per interface data */
+/* l3_main_2 -> l4_per */
+static struct omap_hwmod_ocp_if omap44xx_l3_main_2__l4_per = {
+        .master         = &omap44xx_l3_main_2_hwmod,
+        .slave          = &omap44xx_l4_per_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4_per slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_l4_per_slaves[] = {
+        &omap44xx_l3_main_2__l4_per,
+};
+
+static struct omap_hwmod omap44xx_l4_per_hwmod = {
+        .name           = "l4_per",
+        .class          = &omap44xx_l4_hwmod_class,
+        .slaves         = omap44xx_l4_per_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_l4_per_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* l4_wkup interface data */
+/* l4_cfg -> l4_wkup */
+static struct omap_hwmod_ocp_if omap44xx_l4_cfg__l4_wkup = {
+        .master         = &omap44xx_l4_cfg_hwmod,
+        .slave          = &omap44xx_l4_wkup_hwmod,
+        .clk            = "l4_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* l4_wkup slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_l4_wkup_slaves[] = {
+        &omap44xx_l4_cfg__l4_wkup,
+};
+
+static struct omap_hwmod omap44xx_l4_wkup_hwmod = {
+        .name           = "l4_wkup",
+        .class          = &omap44xx_l4_hwmod_class,
+        .slaves         = omap44xx_l4_wkup_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_l4_wkup_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/*
+ * 'mpu_bus' class
+ * instance(s): mpu_private
+ */
+static struct omap_hwmod_class omap44xx_mpu_bus_hwmod_class = {
+        .name = "mpu_bus",
+};
+
+/* mpu_private interface data */
+/* mpu -> mpu_private */
+static struct omap_hwmod_ocp_if omap44xx_mpu__mpu_private = {
+        .master         = &omap44xx_mpu_hwmod,
+        .slave          = &omap44xx_mpu_private_hwmod,
+        .clk            = "l3_div_ck",
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* mpu_private slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_mpu_private_slaves[] = {
+        &omap44xx_mpu__mpu_private,
+};
+
+static struct omap_hwmod omap44xx_mpu_private_hwmod = {
+        .name           = "mpu_private",
+        .class          = &omap44xx_mpu_bus_hwmod_class,
+        .slaves         = omap44xx_mpu_private_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_mpu_private_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/*
+ * 'mpu' class
+ * mpu sub-system
+ */
+
+static struct omap_hwmod_class omap44xx_mpu_hwmod_class = {
+        .name = "mpu",
+};
+
+/* mpu */
+static struct omap_hwmod_irq_info omap44xx_mpu_irqs[] = {
+        { .name = "pl310", .irq = 0 + OMAP44XX_IRQ_GIC_START },
+        { .name = "cti0", .irq = 1 + OMAP44XX_IRQ_GIC_START },
+        { .name = "cti1", .irq = 2 + OMAP44XX_IRQ_GIC_START },
+};
+
+/* mpu master ports */
+static struct omap_hwmod_ocp_if *omap44xx_mpu_masters[] = {
+        &omap44xx_mpu__l3_main_1,
+        &omap44xx_mpu__l4_abe,
+        &omap44xx_mpu__dmm,
+};
+
+static struct omap_hwmod omap44xx_mpu_hwmod = {
+        .name           = "mpu",
+        .class          = &omap44xx_mpu_hwmod_class,
+        .flags          = (HWMOD_INIT_NO_IDLE | HWMOD_INIT_NO_RESET),
+        .mpu_irqs       = omap44xx_mpu_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap44xx_mpu_irqs),
+        .main_clk       = "dpll_mpu_m2_ck",
+        .prcm = {
+                .omap4 = {
+                        .clkctrl_reg = OMAP4430_CM_MPU_MPU_CLKCTRL,
+                },
+        },
+        .masters        = omap44xx_mpu_masters,
+        .masters_cnt    = ARRAY_SIZE(omap44xx_mpu_masters),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
+        /* dmm class */
+        &omap44xx_dmm_hwmod,
+        /* emif_fw class */
+        &omap44xx_emif_fw_hwmod,
+        /* l3 class */
+        &omap44xx_l3_instr_hwmod,
+        &omap44xx_l3_main_1_hwmod,
+        &omap44xx_l3_main_2_hwmod,
+        &omap44xx_l3_main_3_hwmod,
+        /* l4 class */
+        &omap44xx_l4_abe_hwmod,
+        &omap44xx_l4_cfg_hwmod,
+        &omap44xx_l4_per_hwmod,
+        &omap44xx_l4_wkup_hwmod,
+        /* mpu_bus class */
+        &omap44xx_mpu_private_hwmod,
+
+        /* mpu class */
+        &omap44xx_mpu_hwmod,
+        NULL,
+};
+
+int __init omap44xx_hwmod_init(void)
+{
+        return omap_hwmod_init(omap44xx_hwmods);
+}
+
diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index 723b44e252fd..af00c174d7a9 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -31,12 +31,17 @@
 #include <plat/board.h>
 #include <plat/powerdomain.h>
 #include <plat/clockdomain.h>
+#include <plat/dmtimer.h>
 
 #include "prm.h"
 #include "cm.h"
 #include "pm.h"
 
 int omap2_pm_debug;
+u32 enable_off_mode;
+u32 sleep_while_idle;
+u32 wakeup_timer_seconds;
+u32 wakeup_timer_milliseconds;
 
 #define DUMP_PRM_MOD_REG(mod, reg)    \
         regs[reg_count].name = #mod "." #reg; \
@@ -349,6 +354,23 @@ void pm_dbg_update_time(struct powerdomain *pwrdm, int prev)
         pwrdm->timer = t;
 }
 
+void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds)
+{
+        u32 tick_rate, cycles;
+
+        if (!seconds && !milliseconds)
+                return;
+
+        tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gptimer_wakeup));
+        cycles = tick_rate * seconds + tick_rate * milliseconds / 1000;
+        omap_dm_timer_stop(gptimer_wakeup);
+        omap_dm_timer_set_load_start(gptimer_wakeup, 0, 0xffffffff - cycles);
+
+        pr_info("PM: Resume timer in %u.%03u secs"
+                " (%d ticks at %d ticks/sec.)\n",
+                seconds, milliseconds, cycles, tick_rate);
+}
+
 static int clkdm_dbg_show_counter(struct clockdomain *clkdm, void *user)
 {
         struct seq_file *s = (struct seq_file *)user;
@@ -494,8 +516,10 @@ int pm_dbg_regset_init(int reg_set)
 
 static int pwrdm_suspend_get(void *data, u64 *val)
 {
-        int ret;
-        ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
+        int ret = -EINVAL;
+
+        if (cpu_is_omap34xx())
+                ret = omap3_pm_get_suspend_state((struct powerdomain *)data);
         *val = ret;
 
         if (ret >= 0)
@@ -505,7 +529,10 @@ static int pwrdm_suspend_get(void *data, u64 *val)
 
 static int pwrdm_suspend_set(void *data, u64 val)
 {
-        return omap3_pm_set_suspend_state((struct powerdomain *)data, (int)val);
+        if (cpu_is_omap34xx())
+                return omap3_pm_set_suspend_state(
+                        (struct powerdomain *)data, (int)val);
+        return -EINVAL;
 }
 
 DEFINE_SIMPLE_ATTRIBUTE(pwrdm_suspend_fops, pwrdm_suspend_get,
@@ -553,8 +580,10 @@ static int option_set(void *data, u64 val)
 
         *option = val;
 
-        if (option == &enable_off_mode)
-                omap3_pm_off_mode_enable(val);
+        if (option == &enable_off_mode) {
+                if (cpu_is_omap34xx())
+                        omap3_pm_off_mode_enable(val);
+        }
 
         return 0;
 }
@@ -609,6 +638,9 @@ static int __init pm_dbg_init(void)
                                    &sleep_while_idle, &pm_dbg_option_fops);
         (void) debugfs_create_file("wakeup_timer_seconds", S_IRUGO | S_IWUGO, d,
                                    &wakeup_timer_seconds, &pm_dbg_option_fops);
+        (void) debugfs_create_file("wakeup_timer_milliseconds",
+                        S_IRUGO | S_IWUGO, d, &wakeup_timer_milliseconds,
+                        &pm_dbg_option_fops);
         pm_dbg_init_done = 1;
 
         return 0;
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 68f9f2e95891..59ca03b0e691 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -18,11 +18,15 @@
 #include <plat/omap_device.h>
 #include <plat/common.h>
 
+#include <plat/powerdomain.h>
+#include <plat/clockdomain.h>
+
 static struct omap_device_pm_latency *pm_lats;
 
 static struct device *mpu_dev;
-static struct device *dsp_dev;
+static struct device *iva_dev;
 static struct device *l3_dev;
+static struct device *dsp_dev;
 
 struct device *omap2_get_mpuss_device(void)
 {
@@ -30,10 +34,10 @@ struct device *omap2_get_mpuss_device(void)
         return mpu_dev;
 }
 
-struct device *omap2_get_dsp_device(void)
+struct device *omap2_get_iva_device(void)
 {
-        WARN_ON_ONCE(!dsp_dev);
-        return dsp_dev;
+        WARN_ON_ONCE(!iva_dev);
+        return iva_dev;
 }
 
 struct device *omap2_get_l3_device(void)
@@ -42,6 +46,13 @@ struct device *omap2_get_l3_device(void)
         return l3_dev;
 }
 
+struct device *omap4_get_dsp_device(void)
+{
+        WARN_ON_ONCE(!dsp_dev);
+        return dsp_dev;
+}
+EXPORT_SYMBOL(omap4_get_dsp_device);
+
 /* static int _init_omap_device(struct omap_hwmod *oh, void *user) */
 static int _init_omap_device(char *name, struct device **new_dev)
 {
@@ -69,8 +80,60 @@ static int _init_omap_device(char *name, struct device **new_dev)
 static void omap2_init_processor_devices(void)
 {
         _init_omap_device("mpu", &mpu_dev);
-        _init_omap_device("iva", &dsp_dev);
-        _init_omap_device("l3_main", &l3_dev);
+        _init_omap_device("iva", &iva_dev);
+        if (cpu_is_omap44xx()) {
+                _init_omap_device("l3_main_1", &l3_dev);
+                _init_omap_device("dsp", &dsp_dev);
+        } else {
+                _init_omap_device("l3_main", &l3_dev);
+        }
+}
+
+/*
+ * This sets pwrdm state (other than mpu & core. Currently only ON &
+ * RET are supported. Function is assuming that clkdm doesn't have
+ * hw_sup mode enabled.
+ */
+int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
+{
+        u32 cur_state;
+        int sleep_switch = 0;
+        int ret = 0;
+
+        if (pwrdm == NULL || IS_ERR(pwrdm))
+                return -EINVAL;
+
+        while (!(pwrdm->pwrsts & (1 << state))) {
+                if (state == PWRDM_POWER_OFF)
+                        return ret;
+                state--;
+        }
+
+        cur_state = pwrdm_read_next_pwrst(pwrdm);
+        if (cur_state == state)
+                return ret;
+
+        if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
+                omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
+                sleep_switch = 1;
+                pwrdm_wait_transition(pwrdm);
+        }
+
+        ret = pwrdm_set_next_pwrst(pwrdm, state);
+        if (ret) {
+                printk(KERN_ERR "Unable to set state of powerdomain: %s\n",
+                       pwrdm->name);
+                goto err;
+        }
+
+        if (sleep_switch) {
+                omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
+                pwrdm_wait_transition(pwrdm);
+                pwrdm_state_switch(pwrdm);
+        }
+
+err:
+        return ret;
 }
 
 static int __init omap2_common_pm_init(void)
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index 3de6ece23fc8..77770a13cea8 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -20,7 +20,7 @@ extern void *omap3_secure_ram_storage;
 extern void omap3_pm_off_mode_enable(int);
 extern void omap_sram_idle(void);
 extern int omap3_can_sleep(void);
-extern int set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
+extern int omap_set_pwrdm_state(struct powerdomain *pwrdm, u32 state);
 extern int omap3_idle_init(void);
 
 struct cpuidle_params {
@@ -48,9 +48,11 @@ extern struct omap_dm_timer *gptimer_wakeup;
 
 #ifdef CONFIG_PM_DEBUG
 extern void omap2_pm_dump(int mode, int resume, unsigned int us);
+extern void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds);
 extern int omap2_pm_debug;
 #else
 #define omap2_pm_dump(mode, resume, us)         do {} while (0);
+#define omap2_pm_wakeup_on_timer(seconds, milliseconds) do {} while (0);
 #define omap2_pm_debug                          0
 #endif
 
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 7b03426c72a3..d2b940c7215d 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -38,7 +38,6 @@
 #include <plat/prcm.h>
 #include <plat/gpmc.h>
 #include <plat/dma.h>
-#include <plat/dmtimer.h>
 
 #include <asm/tlbflush.h>
 
@@ -55,11 +54,6 @@
 #define OMAP343X_TABLE_VALUE_OFFSET        0x30
 #define OMAP343X_CONTROL_REG_VALUE_OFFSET  0x32
 
-u32 enable_off_mode;
-u32 sleep_while_idle;
-u32 wakeup_timer_seconds;
-u32 wakeup_timer_milliseconds;
-
 struct power_state {
         struct powerdomain *pwrdm;
         u32 next_state;
@@ -351,7 +345,6 @@ void omap_sram_idle(void)
         int core_next_state = PWRDM_POWER_ON;
         int core_prev_state, per_prev_state;
         u32 sdrc_pwr = 0;
-        int per_state_modified = 0;
 
         if (!_omap_sram_idle)
                 return;
@@ -385,9 +378,9 @@ void omap_sram_idle(void)
         /* Enable IO-PAD and IO-CHAIN wakeups */
         per_next_state = pwrdm_read_next_pwrst(per_pwrdm);
         core_next_state = pwrdm_read_next_pwrst(core_pwrdm);
-        if (omap3_has_io_wakeup() && \
-                        (per_next_state < PWRDM_POWER_ON ||
-                        core_next_state < PWRDM_POWER_ON)) {
+        if (omap3_has_io_wakeup() &&
+            (per_next_state < PWRDM_POWER_ON ||
+             core_next_state < PWRDM_POWER_ON)) {
                 prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN);
                 omap3_enable_io_chain();
         }
@@ -396,19 +389,10 @@ void omap_sram_idle(void)
         if (per_next_state < PWRDM_POWER_ON) {
                 omap_uart_prepare_idle(2);
                 omap2_gpio_prepare_for_idle(per_next_state);
-                if (per_next_state == PWRDM_POWER_OFF) {
-                        if (core_next_state == PWRDM_POWER_ON) {
-                                per_next_state = PWRDM_POWER_RET;
-                                pwrdm_set_next_pwrst(per_pwrdm, per_next_state);
-                                per_state_modified = 1;
-                        } else
+                if (per_next_state == PWRDM_POWER_OFF)
                                 omap3_per_save_context();
-                }
         }
 
-        if (pwrdm_read_pwrst(cam_pwrdm) == PWRDM_POWER_ON)
-                omap2_clkdm_deny_idle(mpu_pwrdm->pwrdm_clkdms[0]);
-
         /* CORE */
         if (core_next_state < PWRDM_POWER_ON) {
                 omap_uart_prepare_idle(0);
@@ -475,8 +459,6 @@ void omap_sram_idle(void)
                 if (per_prev_state == PWRDM_POWER_OFF)
                         omap3_per_restore_context();
                 omap_uart_resume_idle(2);
-                if (per_state_modified)
-                        pwrdm_set_next_pwrst(per_pwrdm, PWRDM_POWER_OFF);
         }
 
         /* Disable IO-PAD and IO-CHAIN wakeup */
@@ -501,51 +483,6 @@ int omap3_can_sleep(void)
         return 1;
 }
 
-/* This sets pwrdm state (other than mpu & core. Currently only ON &
- * RET are supported. Function is assuming that clkdm doesn't have
- * hw_sup mode enabled. */
-int set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
-{
-        u32 cur_state;
-        int sleep_switch = 0;
-        int ret = 0;
-
-        if (pwrdm == NULL || IS_ERR(pwrdm))
-                return -EINVAL;
-
-        while (!(pwrdm->pwrsts & (1 << state))) {
-                if (state == PWRDM_POWER_OFF)
-                        return ret;
-                state--;
-        }
-
-        cur_state = pwrdm_read_next_pwrst(pwrdm);
-        if (cur_state == state)
-                return ret;
-
-        if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
-                omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
-                sleep_switch = 1;
-                pwrdm_wait_transition(pwrdm);
-        }
-
-        ret = pwrdm_set_next_pwrst(pwrdm, state);
-        if (ret) {
-                printk(KERN_ERR "Unable to set state of powerdomain: %s\n",
-                       pwrdm->name);
-                goto err;
-        }
-
-        if (sleep_switch) {
-                omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
-                pwrdm_wait_transition(pwrdm);
-                pwrdm_state_switch(pwrdm);
-        }
-
-err:
-        return ret;
-}
-
 static void omap3_pm_idle(void)
 {
         local_irq_disable();
@@ -567,23 +504,6 @@ out:
 #ifdef CONFIG_SUSPEND
 static suspend_state_t suspend_state;
 
-static void omap2_pm_wakeup_on_timer(u32 seconds, u32 milliseconds)
-{
-        u32 tick_rate, cycles;
-
-        if (!seconds && !milliseconds)
-                return;
-
-        tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gptimer_wakeup));
-        cycles = tick_rate * seconds + tick_rate * milliseconds / 1000;
-        omap_dm_timer_stop(gptimer_wakeup);
-        omap_dm_timer_set_load_start(gptimer_wakeup, 0, 0xffffffff - cycles);
-
-        pr_info("PM: Resume timer in %u.%03u secs"
-                " (%d ticks at %d ticks/sec.)\n",
-                seconds, milliseconds, cycles, tick_rate);
-}
-
 static int omap3_pm_prepare(void)
 {
         disable_hlt();
@@ -604,7 +524,7 @@ static int omap3_pm_suspend(void)
                 pwrst->saved_state = pwrdm_read_next_pwrst(pwrst->pwrdm);
         /* Set ones wanted by suspend */
         list_for_each_entry(pwrst, &pwrst_list, node) {
-                if (set_pwrdm_state(pwrst->pwrdm, pwrst->next_state))
+                if (omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state))
                         goto restore;
                 if (pwrdm_clear_all_prev_pwrst(pwrst->pwrdm))
                         goto restore;
@@ -625,7 +545,7 @@ restore:
                                pwrst->pwrdm->name, pwrst->next_state);
                         ret = -1;
                 }
-                set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);
+                omap_set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);
         }
         if (ret)
                 printk(KERN_ERR "Could not enter target state in pm_suspend\n");
@@ -974,7 +894,7 @@ void omap3_pm_off_mode_enable(int enable)
 
         list_for_each_entry(pwrst, &pwrst_list, node) {
                 pwrst->next_state = state;
-                set_pwrdm_state(pwrst->pwrdm, state);
+                omap_set_pwrdm_state(pwrst->pwrdm, state);
         }
 }
 
@@ -1019,7 +939,7 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
         if (pwrdm_has_hdwr_sar(pwrdm))
                 pwrdm_enable_hdwr_sar(pwrdm);
 
-        return set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);
+        return omap_set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);
 }
 
 /*
@@ -1029,9 +949,6 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
  */
 static int __init clkdms_setup(struct clockdomain *clkdm, void *unused)
 {
-        clkdm_clear_all_wkdeps(clkdm);
-        clkdm_clear_all_sleepdeps(clkdm);
-
         if (clkdm->flags & CLKDM_CAN_ENABLE_AUTO)
                 omap2_clkdm_allow_idle(clkdm);
         else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP &&
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 9405831b746a..2a151917ef52 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -31,4 +31,4 @@ obj-y += $(i2c-omap-m) $(i2c-omap-y)
 # OMAP mailbox framework
 obj-$(CONFIG_OMAP_MBOX_FWK) += mailbox.o
 
-obj-$(CONFIG_OMAP_PM_NOOP) += omap-pm-noop.o
\ No newline at end of file
+obj-$(CONFIG_OMAP_PM_NOOP) += omap-pm-noop.o
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 7951eefe1a0e..11c5b0eefb85 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -2085,8 +2085,9 @@ void omap2_gpio_prepare_for_idle(int power_state)
         for (i = min; i < gpio_bank_count; i++) {
                 struct gpio_bank *bank = &gpio_bank[i];
                 u32 l1, l2;
+                int j;
 
-                if (bank->dbck_enable_mask)
+                for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++)
                         clk_disable(bank->dbck);
 
                 if (power_state > PWRDM_POWER_OFF)
@@ -2152,8 +2153,9 @@ void omap2_gpio_resume_after_idle(void)
         for (i = min; i < gpio_bank_count; i++) {
                 struct gpio_bank *bank = &gpio_bank[i];
                 u32 l, gen, gen0, gen1;
+                int j;
 
-                if (bank->dbck_enable_mask)
+                for (j = 0; j < hweight_long(bank->dbck_enable_mask); j++)
                         clk_enable(bank->dbck);
 
                 if (!workaround_enabled)
diff --git a/arch/arm/plat-omap/include/plat/common.h b/arch/arm/plat-omap/include/plat/common.h
index 9776b41ad76f..c45dbb975e09 100644
--- a/arch/arm/plat-omap/include/plat/common.h
+++ b/arch/arm/plat-omap/include/plat/common.h
@@ -91,7 +91,8 @@ void omap3_map_io(void);
 })
 
 extern struct device *omap2_get_mpuss_device(void);
-extern struct device *omap2_get_dsp_device(void);
+extern struct device *omap2_get_iva_device(void);
 extern struct device *omap2_get_l3_device(void);
+extern struct device *omap4_get_dsp_device(void);
 
 #endif /* __ARCH_ARM_MACH_OMAP_COMMON_H */
diff --git a/arch/arm/plat-omap/include/plat/omap_device.h b/arch/arm/plat-omap/include/plat/omap_device.h
index 25cd9ac3b095..28e2d1a78433 100644
--- a/arch/arm/plat-omap/include/plat/omap_device.h
+++ b/arch/arm/plat-omap/include/plat/omap_device.h
@@ -36,6 +36,8 @@
 
 #include <plat/omap_hwmod.h>
 
+extern struct device omap_device_parent;
+
 /* omap_device._state values */
 #define OMAP_DEVICE_STATE_UNKNOWN       0
 #define OMAP_DEVICE_STATE_ENABLED       1
@@ -62,7 +64,6 @@
  *
  */
 struct omap_device {
-        u32                             magic;
         struct platform_device          pdev;
         struct omap_hwmod               **hwmods;
         struct omap_device_pm_latency   *pm_lats;
@@ -82,7 +83,6 @@ int omap_device_shutdown(struct platform_device *pdev);
 
 /* Core code interface */
 
-bool omap_device_is_valid(struct omap_device *od);
 int omap_device_count_resources(struct omap_device *od);
 int omap_device_fill_resources(struct omap_device *od, struct resource *res);
 
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index 72902814c3ca..c1835afc238d 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -561,5 +561,6 @@ int omap_hwmod_for_each_by_class(const char *classname,
 extern int omap2420_hwmod_init(void);
 extern int omap2430_hwmod_init(void);
 extern int omap3xxx_hwmod_init(void);
+extern int omap44xx_hwmod_init(void);
 
 #endif
diff --git a/arch/arm/plat-omap/omap_device.c b/arch/arm/plat-omap/omap_device.c
index ceba58a47595..b5e5f6074b0b 100644
--- a/arch/arm/plat-omap/omap_device.c
+++ b/arch/arm/plat-omap/omap_device.c
@@ -91,12 +91,6 @@
 #define USE_WAKEUP_LAT                  0
 #define IGNORE_WAKEUP_LAT               1
 
-/*
- * OMAP_DEVICE_MAGIC: used to determine whether a struct omap_device
- * obtained via container_of() is in fact a struct omap_device
- */
-#define OMAP_DEVICE_MAGIC                0xf00dcafe
-
 /* Private functions */
 
 /**
@@ -453,8 +447,6 @@ struct omap_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
         od->pm_lats = pm_lats;
         od->pm_lats_cnt = pm_lats_cnt;
 
-        od->magic = OMAP_DEVICE_MAGIC;
-
         if (is_early_device)
                 ret = omap_early_device_register(od);
         else
@@ -514,6 +506,7 @@ int omap_device_register(struct omap_device *od)
 {
         pr_debug("omap_device: %s: registering\n", od->pdev.name);
 
+        od->pdev.dev.parent = &omap_device_parent;
         return platform_device_register(&od->pdev);
 }
 
@@ -668,18 +661,6 @@ int omap_device_align_pm_lat(struct platform_device *pdev,
 }
 
 /**
- * omap_device_is_valid - Check if pointer is a valid omap_device
- * @od: struct omap_device *
- *
- * Return whether struct omap_device pointer @od points to a valid
- * omap_device.
- */
-bool omap_device_is_valid(struct omap_device *od)
-{
-        return (od && od->magic == OMAP_DEVICE_MAGIC);
-}
-
-/**
  * omap_device_get_pwrdm - return the powerdomain * associated with @od
  * @od: struct omap_device *
  *
@@ -798,3 +779,14 @@ int omap_device_enable_clocks(struct omap_device *od)
         /* XXX pass along return value here? */
         return 0;
 }
+
+struct device omap_device_parent = {
+        .init_name      = "omap",
+        .parent         = &platform_bus,
+};
+
+static int __init omap_device_init(void)
+{
+        return device_register(&omap_device_parent);
+}
+core_initcall(omap_device_init);