* [PATCH-V3 3/3] ARM: OMAP3+: am33xx: Add powerdomain & PRM support
2012-03-15 11:06 [PATCH-V3 0/3] ARM: OMAP2+: Add powerdomain & PRM support for AM33XX device Vaibhav Hiremath
2012-03-15 11:06 ` [PATCH-V3 1/3] ARM: OMAP3/4: omap_hwmod: Add rstst_off field to struct omap_hwmod_omap4_prcm Vaibhav Hiremath
2012-03-15 11:06 ` [PATCH-V3 2/3] ARM: OMAP2+: powerdomain: Add offset & mask fields to struct powerdomain Vaibhav Hiremath
@ 2012-03-15 11:06 ` Vaibhav Hiremath
2012-03-29 18:03 ` [PATCH-V3 0/3] ARM: OMAP2+: Add powerdomain & PRM support for AM33XX device Kevin Hilman
3 siblings, 0 replies; 6+ messages in thread
From: Vaibhav Hiremath @ 2012-03-15 11:06 UTC (permalink / raw)
To: linux-arm-kernel
As far as PRM/CM/PRCM modules are concerned, AM33XX device is
different than OMAP3 and OMAP4 architectures; so we need to
handle it separately.
This patch adds support for, Powerdomain, Powerdomain data,
PRM api's required for AM33XX device.
And also, hooks up AM33XX powerdomain to existing OMAP framework.
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
---
arch/arm/mach-omap2/Makefile | 4 +
arch/arm/mach-omap2/io.c | 1 +
arch/arm/mach-omap2/omap_hwmod.c | 32 +++-
arch/arm/mach-omap2/powerdomain.h | 6 +-
arch/arm/mach-omap2/powerdomain33xx.c | 230 +++++++++++++++++
arch/arm/mach-omap2/powerdomains33xx_data.c | 185 ++++++++++++++
arch/arm/mach-omap2/prm-regbits-33xx.h | 357 +++++++++++++++++++++++++++
arch/arm/mach-omap2/prm33xx.c | 134 ++++++++++
arch/arm/mach-omap2/prm33xx.h | 129 ++++++++++
9 files changed, 1073 insertions(+), 5 deletions(-)
create mode 100644 arch/arm/mach-omap2/powerdomain33xx.c
create mode 100644 arch/arm/mach-omap2/powerdomains33xx_data.c
create mode 100644 arch/arm/mach-omap2/prm-regbits-33xx.h
create mode 100644 arch/arm/mach-omap2/prm33xx.c
create mode 100644 arch/arm/mach-omap2/prm33xx.h
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index b4ac21e..fd130e5 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -114,6 +114,10 @@ obj-$(CONFIG_ARCH_OMAP3) += $(powerdomain-common) \
powerdomain2xxx_3xxx.o \
powerdomains3xxx_data.o \
powerdomains2xxx_3xxx_data.o
+obj-$(CONFIG_SOC_OMAPAM33XX) += $(powerdomain-common) \
+ prm33xx.o \
+ powerdomain33xx.o \
+ powerdomains33xx_data.o
obj-$(CONFIG_ARCH_OMAP4) += $(powerdomain-common) \
powerdomain44xx.o \
powerdomains44xx_data.o
diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 11d53df..b594918 100644
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -473,6 +473,7 @@ void __init am33xx_init_early(void)
omap2_set_globals_am33xx();
omap_common_init_early();
am33xx_voltagedomains_init();
+ am33xx_powerdomains_init();
omap3xxx_clk_init();
}
#endif
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 26928c6..d698010 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -151,6 +151,7 @@
#include "cminst44xx.h"
#include "prm2xxx_3xxx.h"
#include "prm44xx.h"
+#include "prm33xx.h"
#include "prminst44xx.h"
#include "mux.h"
@@ -1418,7 +1419,15 @@ static int _assert_hardreset(struct omap_hwmod *oh, const char *name)
if (IS_ERR_VALUE(ret))
return ret;
- if (cpu_is_omap24xx() || cpu_is_omap34xx())
+ /*
+ * cpu_is_omap34xx() is true for am33xx device as well, so
+ * fist check for cpu_is_am33xx().
+ */
+ if (cpu_is_am33xx())
+ return am33xx_prm_assert_hardreset(ohri.rst_shift,
+ oh->clkdm->pwrdm.ptr->prcm_offs,
+ oh->prcm.omap4.rstctrl_offs);
+ else if (cpu_is_omap24xx() || cpu_is_omap34xx())
return omap2_prm_assert_hardreset(oh->prcm.omap2.module_offs,
ohri.rst_shift);
else if (cpu_is_omap44xx())
@@ -1452,7 +1461,16 @@ static int _deassert_hardreset(struct omap_hwmod *oh, const char *name)
if (IS_ERR_VALUE(ret))
return ret;
- if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
+ /*
+ * cpu_is_omap34xx() is true for am33xx device as well, so
+ * fist check for cpu_is_am33xx().
+ */
+ if (cpu_is_am33xx()) {
+ return am33xx_prm_deassert_hardreset(ohri.rst_shift,
+ oh->clkdm->pwrdm.ptr->prcm_offs,
+ oh->prcm.omap4.rstctrl_offs,
+ oh->prcm.omap4.rstst_offs);
+ } else if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
ret = omap2_prm_deassert_hardreset(oh->prcm.omap2.module_offs,
ohri.rst_shift,
ohri.st_shift);
@@ -1494,7 +1512,15 @@ static int _read_hardreset(struct omap_hwmod *oh, const char *name)
if (IS_ERR_VALUE(ret))
return ret;
- if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
+ /*
+ * cpu_is_omap34xx() is true for am33xx device as well, so
+ * fist check for cpu_is_am33xx().
+ */
+ if (cpu_is_am33xx()) {
+ return am33xx_prm_is_hardreset_asserted(ohri.rst_shift,
+ oh->clkdm->pwrdm.ptr->prcm_offs,
+ oh->prcm.omap4.rstctrl_offs);
+ } else if (cpu_is_omap24xx() || cpu_is_omap34xx()) {
return omap2_prm_is_hardreset_asserted(oh->prcm.omap2.module_offs,
ohri.st_shift);
} else if (cpu_is_omap44xx()) {
diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h
index 8fc50b2..53e42a9 100644
--- a/arch/arm/mach-omap2/powerdomain.h
+++ b/arch/arm/mach-omap2/powerdomain.h
@@ -67,9 +67,9 @@
/*
* Maximum number of clockdomains that can be associated with a powerdomain.
- * CORE powerdomain on OMAP4 is the worst case
+ * PER powerdomain on AM33XX is the worst case
*/
-#define PWRDM_MAX_CLKDMS 9
+#define PWRDM_MAX_CLKDMS 11
/* XXX A completely arbitrary number. What is reasonable here? */
#define PWRDM_TRANSITION_BAILOUT 100000
@@ -240,10 +240,12 @@ bool pwrdm_can_ever_lose_context(struct powerdomain *pwrdm);
extern void omap242x_powerdomains_init(void);
extern void omap243x_powerdomains_init(void);
extern void omap3xxx_powerdomains_init(void);
+extern void am33xx_powerdomains_init(void);
extern void omap44xx_powerdomains_init(void);
extern struct pwrdm_ops omap2_pwrdm_operations;
extern struct pwrdm_ops omap3_pwrdm_operations;
+extern struct pwrdm_ops am33xx_pwrdm_operations;
extern struct pwrdm_ops omap4_pwrdm_operations;
/* Common Internal functions used across OMAP rev's */
diff --git a/arch/arm/mach-omap2/powerdomain33xx.c b/arch/arm/mach-omap2/powerdomain33xx.c
new file mode 100644
index 0000000..c53f8d8
--- /dev/null
+++ b/arch/arm/mach-omap2/powerdomain33xx.c
@@ -0,0 +1,230 @@
+/*
+ * AM33XX Powerdomain control
+ *
+ * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Derived from mach-omap2/powerdomain44xx.c written by Rajendra Nayak
+ * <rnayak@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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/io.h>
+#include <linux/errno.h>
+#include <linux/delay.h>
+
+#include <plat/prcm.h>
+
+#include "powerdomain.h"
+#include "prm33xx.h"
+#include "prm-regbits-33xx.h"
+
+
+static int am33xx_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
+{
+ am33xx_prm_rmw_reg_bits(OMAP_POWERSTATE_MASK,
+ (pwrst << OMAP_POWERSTATE_SHIFT),
+ pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);
+ return 0;
+}
+
+static int am33xx_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);
+ v &= OMAP_POWERSTATE_MASK;
+ v >>= OMAP_POWERSTATE_SHIFT;
+
+ return v;
+}
+
+static int am33xx_pwrdm_read_pwrst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs);
+ v &= OMAP_POWERSTATEST_MASK;
+ v >>= OMAP_POWERSTATEST_SHIFT;
+
+ return v;
+}
+
+static int am33xx_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs);
+ v &= AM33XX_LASTPOWERSTATEENTERED_MASK;
+ v >>= AM33XX_LASTPOWERSTATEENTERED_SHIFT;
+
+ return v;
+}
+
+static int am33xx_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
+{
+ am33xx_prm_rmw_reg_bits(AM33XX_LOWPOWERSTATECHANGE_MASK,
+ (1 << AM33XX_LOWPOWERSTATECHANGE_SHIFT),
+ pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);
+ return 0;
+}
+
+static int am33xx_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
+{
+ am33xx_prm_rmw_reg_bits(AM33XX_LASTPOWERSTATEENTERED_MASK,
+ AM33XX_LASTPOWERSTATEENTERED_MASK,
+ pwrdm->prcm_offs, pwrdm->pwrstst_offs);
+ return 0;
+}
+
+static int am33xx_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
+{
+ u32 m;
+
+ m = pwrdm->logicretstate_mask;
+ if (!m)
+ return -EINVAL;
+
+ am33xx_prm_rmw_reg_bits(m, (pwrst << __ffs(m)),
+ pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);
+
+ return 0;
+}
+
+static int am33xx_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs);
+ v &= AM33XX_LOGICSTATEST_MASK;
+ v >>= AM33XX_LOGICSTATEST_SHIFT;
+
+ return v;
+}
+
+static int am33xx_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
+{
+ u32 v, m;
+
+ m = pwrdm->logicretstate_mask;
+ if (!m)
+ return -EINVAL;
+
+ v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);
+ v &= m;
+ v >>= __ffs(m);
+
+ return v;
+}
+
+static int am33xx_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
+ u8 pwrst)
+{
+ u32 m;
+
+ m = pwrdm->mem_on_mask[bank];
+ if (!m)
+ return -EINVAL;
+
+ am33xx_prm_rmw_reg_bits(m, (pwrst << __ffs(m)),
+ pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);
+
+ return 0;
+}
+
+static int am33xx_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
+ u8 pwrst)
+{
+ u32 m;
+
+ m = pwrdm->mem_ret_mask[bank];
+ if (!m)
+ return -EINVAL;
+
+ am33xx_prm_rmw_reg_bits(m, (pwrst << __ffs(m)),
+ pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);
+
+ return 0;
+}
+
+static int am33xx_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
+{
+ u32 m, v;
+
+ m = pwrdm->mem_pwrst_mask[bank];
+ if (!m)
+ return -EINVAL;
+
+ v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs);
+ v &= m;
+ v >>= __ffs(m);
+
+ return v;
+}
+
+static int am33xx_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
+{
+ u32 m, v;
+
+ m = pwrdm->mem_retst_mask[bank];
+ if (!m)
+ return -EINVAL;
+
+ v = am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstctrl_offs);
+ v &= m;
+ v >>= __ffs(m);
+
+ return v;
+}
+
+static int am33xx_pwrdm_wait_transition(struct powerdomain *pwrdm)
+{
+ u32 c = 0;
+
+ /*
+ * REVISIT: pwrdm_wait_transition() may be better implemented
+ * via a callback and a periodic timer check -- how long do we expect
+ * powerdomain transitions to take?
+ */
+
+ /* XXX Is this udelay() value meaningful? */
+ while ((am33xx_prm_read_reg(pwrdm->prcm_offs, pwrdm->pwrstst_offs)
+ & OMAP_INTRANSITION_MASK) &&
+ (c++ < PWRDM_TRANSITION_BAILOUT))
+ udelay(1);
+
+ if (c > PWRDM_TRANSITION_BAILOUT) {
+ printk(KERN_ERR "powerdomain: waited too long for "
+ "powerdomain %s to complete transition\n",
+ pwrdm->name);
+ return -EAGAIN;
+ }
+
+ pr_debug("powerdomain: completed transition in %d loops\n", c);
+
+ return 0;
+}
+
+struct pwrdm_ops am33xx_pwrdm_operations = {
+ .pwrdm_set_next_pwrst = am33xx_pwrdm_set_next_pwrst,
+ .pwrdm_read_next_pwrst = am33xx_pwrdm_read_next_pwrst,
+ .pwrdm_read_pwrst = am33xx_pwrdm_read_pwrst,
+ .pwrdm_read_prev_pwrst = am33xx_pwrdm_read_prev_pwrst,
+ .pwrdm_set_logic_retst = am33xx_pwrdm_set_logic_retst,
+ .pwrdm_read_logic_pwrst = am33xx_pwrdm_read_logic_pwrst,
+ .pwrdm_read_logic_retst = am33xx_pwrdm_read_logic_retst,
+ .pwrdm_clear_all_prev_pwrst = am33xx_pwrdm_clear_all_prev_pwrst,
+ .pwrdm_set_lowpwrstchange = am33xx_pwrdm_set_lowpwrstchange,
+ .pwrdm_read_mem_pwrst = am33xx_pwrdm_read_mem_pwrst,
+ .pwrdm_read_mem_retst = am33xx_pwrdm_read_mem_retst,
+ .pwrdm_set_mem_onst = am33xx_pwrdm_set_mem_onst,
+ .pwrdm_set_mem_retst = am33xx_pwrdm_set_mem_retst,
+ .pwrdm_wait_transition = am33xx_pwrdm_wait_transition,
+};
diff --git a/arch/arm/mach-omap2/powerdomains33xx_data.c b/arch/arm/mach-omap2/powerdomains33xx_data.c
new file mode 100644
index 0000000..869adb8
--- /dev/null
+++ b/arch/arm/mach-omap2/powerdomains33xx_data.c
@@ -0,0 +1,185 @@
+/*
+ * AM33XX Power domain data
+ *
+ * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include "powerdomain.h"
+#include "prcm-common.h"
+#include "prm-regbits-33xx.h"
+#include "prm33xx.h"
+
+static struct powerdomain gfx_33xx_pwrdm = {
+ .name = "gfx_pwrdm",
+ .voltdm = { .name = "core" },
+ .prcm_offs = AM33XX_PRM_GFX_MOD,
+ .pwrstctrl_offs = AM33XX_PM_GFX_PWRSTCTRL_OFFSET,
+ .pwrstst_offs = AM33XX_PM_GFX_PWRSTST_OFFSET,
+ .pwrsts = PWRSTS_OFF_RET_ON,
+ .pwrsts_logic_ret = PWRSTS_OFF_RET,
+ .flags = PWRDM_HAS_LOWPOWERSTATECHANGE,
+ .banks = 1,
+ .logicretstate_mask = AM33XX_LOGICRETSTATE_MASK,
+ .mem_on_mask = {
+ [0] = AM33XX_GFX_MEM_ONSTATE_MASK, /* gfx_mem */
+ },
+ .mem_ret_mask = {
+ [0] = AM33XX_GFX_MEM_RETSTATE_MASK, /* gfx_mem */
+ },
+ .mem_pwrst_mask = {
+ [0] = AM33XX_GFX_MEM_STATEST_MASK, /* gfx_mem */
+ },
+ .mem_retst_mask = {
+ [0] = AM33XX_GFX_MEM_RETSTATE_MASK, /* gfx_mem */
+ },
+ .pwrsts_mem_ret = {
+ [0] = PWRSTS_OFF_RET, /* gfx_mem */
+ },
+ .pwrsts_mem_on = {
+ [0] = PWRSTS_ON, /* gfx_mem */
+ },
+};
+
+static struct powerdomain rtc_33xx_pwrdm = {
+ .name = "rtc_pwrdm",
+ .voltdm = { .name = "rtc" },
+ .prcm_offs = AM33XX_PRM_RTC_MOD,
+ .pwrstctrl_offs = AM33XX_PM_RTC_PWRSTCTRL_OFFSET,
+ .pwrstst_offs = AM33XX_PM_RTC_PWRSTST_OFFSET,
+ .pwrsts = PWRSTS_ON,
+ .logicretstate_mask = AM33XX_LOGICRETSTATE_MASK,
+};
+
+static struct powerdomain wkup_33xx_pwrdm = {
+ .name = "wkup_pwrdm",
+ .voltdm = { .name = "core" },
+ .prcm_offs = AM33XX_PRM_WKUP_MOD,
+ .pwrstctrl_offs = AM33XX_PM_WKUP_PWRSTCTRL_OFFSET,
+ .pwrstst_offs = AM33XX_PM_WKUP_PWRSTST_OFFSET,
+ .pwrsts = PWRSTS_ON,
+ .logicretstate_mask = AM33XX_LOGICRETSTATE_3_3_MASK,
+};
+
+static struct powerdomain per_33xx_pwrdm = {
+ .name = "per_pwrdm",
+ .voltdm = { .name = "core" },
+ .prcm_offs = AM33XX_PRM_PER_MOD,
+ .pwrstctrl_offs = AM33XX_PM_PER_PWRSTCTRL_OFFSET,
+ .pwrstst_offs = AM33XX_PM_PER_PWRSTST_OFFSET,
+ .pwrsts = PWRSTS_OFF_RET_ON,
+ .pwrsts_logic_ret = PWRSTS_OFF_RET,
+ .flags = PWRDM_HAS_LOWPOWERSTATECHANGE,
+ .banks = 3,
+ .logicretstate_mask = AM33XX_LOGICRETSTATE_3_3_MASK,
+ .mem_on_mask = {
+ [0] = AM33XX_PRUSS_MEM_ONSTATE_MASK, /* pruss_mem */
+ [1] = AM33XX_PER_MEM_ONSTATE_MASK, /* per_mem */
+ [2] = AM33XX_RAM_MEM_ONSTATE_MASK, /* ram_mem */
+ },
+ .mem_ret_mask = {
+ [0] = AM33XX_PRUSS_MEM_RETSTATE_MASK, /* pruss_mem */
+ [1] = AM33XX_PER_MEM_RETSTATE_MASK, /* per_mem */
+ [2] = AM33XX_RAM_MEM_RETSTATE_MASK, /* ram_mem */
+ },
+ .mem_pwrst_mask = {
+ [0] = AM33XX_PRUSS_MEM_STATEST_MASK, /* pruss_mem */
+ [1] = AM33XX_PER_MEM_STATEST_MASK, /* per_mem */
+ [2] = AM33XX_RAM_MEM_STATEST_MASK, /* ram_mem */
+ },
+ .mem_retst_mask = {
+ [0] = AM33XX_PRUSS_MEM_RETSTATE_MASK, /* pruss_mem */
+ [1] = AM33XX_PER_MEM_RETSTATE_MASK, /* per_mem */
+ [2] = AM33XX_RAM_MEM_RETSTATE_MASK, /* ram_mem */
+ },
+ .pwrsts_mem_ret = {
+ [0] = PWRSTS_OFF_RET, /* pruss_mem */
+ [1] = PWRSTS_OFF_RET, /* per_mem */
+ [2] = PWRSTS_OFF_RET, /* ram_mem */
+ },
+ .pwrsts_mem_on = {
+ [0] = PWRSTS_ON, /* pruss_mem */
+ [1] = PWRSTS_ON, /* per_mem */
+ [2] = PWRSTS_ON, /* ram_mem */
+ },
+};
+
+static struct powerdomain mpu_33xx_pwrdm = {
+ .name = "mpu_pwrdm",
+ .voltdm = { .name = "mpu" },
+ .prcm_offs = AM33XX_PRM_MPU_MOD,
+ .pwrstctrl_offs = AM33XX_PM_MPU_PWRSTCTRL_OFFSET,
+ .pwrstst_offs = AM33XX_PM_MPU_PWRSTST_OFFSET,
+ .pwrsts = PWRSTS_OFF_RET_ON,
+ .pwrsts_logic_ret = PWRSTS_OFF_RET,
+ .flags = PWRDM_HAS_LOWPOWERSTATECHANGE,
+ .banks = 3,
+ .logicretstate_mask = AM33XX_LOGICRETSTATE_MASK,
+ .mem_on_mask = {
+ [0] = AM33XX_MPU_L1_ONSTATE_MASK, /* mpu_l1 */
+ [1] = AM33XX_MPU_L2_ONSTATE_MASK, /* mpu_l2 */
+ [2] = AM33XX_MPU_RAM_ONSTATE_MASK, /* mpu_ram */
+ },
+ .mem_ret_mask = {
+ [0] = AM33XX_MPU_L1_RETSTATE_MASK, /* mpu_l1 */
+ [1] = AM33XX_MPU_L2_RETSTATE_MASK, /* mpu_l2 */
+ [2] = AM33XX_MPU_RAM_RETSTATE_MASK, /* mpu_ram */
+ },
+ .mem_pwrst_mask = {
+ [0] = AM33XX_MPU_L1_STATEST_MASK, /* mpu_l1 */
+ [1] = AM33XX_MPU_L2_STATEST_MASK, /* mpu_l2 */
+ [2] = AM33XX_MPU_RAM_STATEST_MASK, /* mpu_ram */
+ },
+ .mem_retst_mask = {
+ [0] = AM33XX_MPU_L1_RETSTATE_MASK, /* mpu_l1 */
+ [1] = AM33XX_MPU_L2_RETSTATE_MASK, /* mpu_l2 */
+ [2] = AM33XX_MPU_RAM_RETSTATE_MASK, /* mpu_ram */
+ },
+ .pwrsts_mem_ret = {
+ [0] = PWRSTS_OFF_RET, /* mpu_l1 */
+ [1] = PWRSTS_OFF_RET, /* mpu_l2 */
+ [2] = PWRSTS_OFF_RET, /* mpu_ram */
+ },
+ .pwrsts_mem_on = {
+ [0] = PWRSTS_ON, /* mpu_l1 */
+ [1] = PWRSTS_ON, /* mpu_l2 */
+ [2] = PWRSTS_ON, /* mpu_ram */
+ },
+};
+
+static struct powerdomain cefuse_33xx_pwrdm = {
+ .name = "cefuse_pwrdm",
+ .voltdm = { .name = "core" },
+ .prcm_offs = AM33XX_PRM_CEFUSE_MOD,
+ .pwrstctrl_offs = AM33XX_PM_CEFUSE_PWRSTCTRL_OFFSET,
+ .pwrstst_offs = AM33XX_PM_CEFUSE_PWRSTST_OFFSET,
+ .pwrsts = PWRSTS_OFF_ON,
+};
+
+static struct powerdomain *powerdomains_am33xx[] __initdata = {
+ &gfx_33xx_pwrdm,
+ &rtc_33xx_pwrdm,
+ &wkup_33xx_pwrdm,
+ &per_33xx_pwrdm,
+ &mpu_33xx_pwrdm,
+ &cefuse_33xx_pwrdm,
+ NULL,
+};
+
+void __init am33xx_powerdomains_init(void)
+{
+ pwrdm_register_platform_funcs(&am33xx_pwrdm_operations);
+ pwrdm_register_pwrdms(powerdomains_am33xx);
+ pwrdm_complete_init();
+}
diff --git a/arch/arm/mach-omap2/prm-regbits-33xx.h b/arch/arm/mach-omap2/prm-regbits-33xx.h
new file mode 100644
index 0000000..0221b5c
--- /dev/null
+++ b/arch/arm/mach-omap2/prm-regbits-33xx.h
@@ -0,0 +1,357 @@
+/*
+ * AM33XX PRM_XXX register bits
+ *
+ * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __ARCH_ARM_MACH_OMAP2_PRM_REGBITS_33XX_H
+#define __ARCH_ARM_MACH_OMAP2_PRM_REGBITS_33XX_H
+
+#include "prm.h"
+
+/* Used by PRM_LDO_SRAM_CORE_SETUP, PRM_LDO_SRAM_MPU_SETUP */
+#define AM33XX_ABBOFF_ACT_EXPORT_SHIFT 1
+#define AM33XX_ABBOFF_ACT_EXPORT_MASK (1 << 1)
+
+/* Used by PRM_LDO_SRAM_CORE_SETUP, PRM_LDO_SRAM_MPU_SETUP */
+#define AM33XX_ABBOFF_SLEEP_EXPORT_SHIFT 2
+#define AM33XX_ABBOFF_SLEEP_EXPORT_MASK (1 << 2)
+
+/* Used by PRM_LDO_SRAM_CORE_SETUP, PRM_LDO_SRAM_MPU_SETUP */
+#define AM33XX_AIPOFF_SHIFT 8
+#define AM33XX_AIPOFF_MASK (1 << 8)
+
+/* Used by PM_WKUP_PWRSTST */
+#define AM33XX_DEBUGSS_MEM_STATEST_SHIFT 17
+#define AM33XX_DEBUGSS_MEM_STATEST_MASK (0x3 << 17)
+
+/* Used by PRM_LDO_SRAM_CORE_SETUP, PRM_LDO_SRAM_MPU_SETUP */
+#define AM33XX_DISABLE_RTA_EXPORT_SHIFT 0
+#define AM33XX_DISABLE_RTA_EXPORT_MASK (1 << 0)
+
+/* Used by PRM_IRQENABLE_M3, PRM_IRQENABLE_MPU */
+#define AM33XX_DPLL_CORE_RECAL_EN_SHIFT 12
+#define AM33XX_DPLL_CORE_RECAL_EN_MASK (1 << 12)
+
+/* Used by PRM_IRQSTATUS_M3, PRM_IRQSTATUS_MPU */
+#define AM33XX_DPLL_CORE_RECAL_ST_SHIFT 12
+#define AM33XX_DPLL_CORE_RECAL_ST_MASK (1 << 12)
+
+/* Used by PRM_IRQENABLE_M3, PRM_IRQENABLE_MPU */
+#define AM33XX_DPLL_DDR_RECAL_EN_SHIFT 14
+#define AM33XX_DPLL_DDR_RECAL_EN_MASK (1 << 14)
+
+/* Used by PRM_IRQSTATUS_M3, PRM_IRQSTATUS_MPU */
+#define AM33XX_DPLL_DDR_RECAL_ST_SHIFT 14
+#define AM33XX_DPLL_DDR_RECAL_ST_MASK (1 << 14)
+
+/* Used by PRM_IRQENABLE_M3, PRM_IRQENABLE_MPU */
+#define AM33XX_DPLL_DISP_RECAL_EN_SHIFT 15
+#define AM33XX_DPLL_DISP_RECAL_EN_MASK (1 << 15)
+
+/* Used by PRM_IRQSTATUS_M3, PRM_IRQSTATUS_MPU */
+#define AM33XX_DPLL_DISP_RECAL_ST_SHIFT 13
+#define AM33XX_DPLL_DISP_RECAL_ST_MASK (1 << 13)
+
+/* Used by PRM_IRQENABLE_M3, PRM_IRQENABLE_MPU */
+#define AM33XX_DPLL_MPU_RECAL_EN_SHIFT 11
+#define AM33XX_DPLL_MPU_RECAL_EN_MASK (1 << 11)
+
+/* Used by PRM_IRQSTATUS_M3, PRM_IRQSTATUS_MPU */
+#define AM33XX_DPLL_MPU_RECAL_ST_SHIFT 11
+#define AM33XX_DPLL_MPU_RECAL_ST_MASK (1 << 11)
+
+/* Used by PRM_IRQENABLE_M3, PRM_IRQENABLE_MPU */
+#define AM33XX_DPLL_PER_RECAL_EN_SHIFT 13
+#define AM33XX_DPLL_PER_RECAL_EN_MASK (1 << 13)
+
+/* Used by PRM_IRQSTATUS_M3, PRM_IRQSTATUS_MPU */
+#define AM33XX_DPLL_PER_RECAL_ST_SHIFT 15
+#define AM33XX_DPLL_PER_RECAL_ST_MASK (1 << 15)
+
+/* Used by RM_WKUP_RSTST */
+#define AM33XX_EMULATION_M3_RST_SHIFT 6
+#define AM33XX_EMULATION_M3_RST_MASK (1 << 6)
+
+/* Used by RM_MPU_RSTST */
+#define AM33XX_EMULATION_MPU_RST_SHIFT 5
+#define AM33XX_EMULATION_MPU_RST_MASK (1 << 5)
+
+/* Used by PRM_LDO_SRAM_CORE_SETUP, PRM_LDO_SRAM_MPU_SETUP */
+#define AM33XX_ENFUNC1_EXPORT_SHIFT 3
+#define AM33XX_ENFUNC1_EXPORT_MASK (1 << 3)
+
+/* Used by PRM_LDO_SRAM_CORE_SETUP, PRM_LDO_SRAM_MPU_SETUP */
+#define AM33XX_ENFUNC3_EXPORT_SHIFT 5
+#define AM33XX_ENFUNC3_EXPORT_MASK (1 << 5)
+
+/* Used by PRM_LDO_SRAM_CORE_SETUP, PRM_LDO_SRAM_MPU_SETUP */
+#define AM33XX_ENFUNC4_SHIFT 6
+#define AM33XX_ENFUNC4_MASK (1 << 6)
+
+/* Used by PRM_LDO_SRAM_CORE_SETUP, PRM_LDO_SRAM_MPU_SETUP */
+#define AM33XX_ENFUNC5_SHIFT 7
+#define AM33XX_ENFUNC5_MASK (1 << 7)
+
+/* Used by PRM_RSTST */
+#define AM33XX_EXTERNAL_WARM_RST_SHIFT 5
+#define AM33XX_EXTERNAL_WARM_RST_MASK (1 << 5)
+
+/* Used by PRM_IRQENABLE_M3, PRM_IRQENABLE_MPU */
+#define AM33XX_FORCEWKUP_EN_SHIFT 10
+#define AM33XX_FORCEWKUP_EN_MASK (1 << 10)
+
+/* Used by PRM_IRQSTATUS_M3, PRM_IRQSTATUS_MPU */
+#define AM33XX_FORCEWKUP_ST_SHIFT 10
+#define AM33XX_FORCEWKUP_ST_MASK (1 << 10)
+
+/* Used by PM_GFX_PWRSTCTRL */
+#define AM33XX_GFX_MEM_ONSTATE_SHIFT 17
+#define AM33XX_GFX_MEM_ONSTATE_MASK (0x3 << 17)
+
+/* Used by PM_GFX_PWRSTCTRL */
+#define AM33XX_GFX_MEM_RETSTATE_SHIFT 6
+#define AM33XX_GFX_MEM_RETSTATE_MASK (1 << 6)
+
+/* Used by PM_GFX_PWRSTST */
+#define AM33XX_GFX_MEM_STATEST_SHIFT 4
+#define AM33XX_GFX_MEM_STATEST_MASK (0x3 << 4)
+
+/* Used by RM_GFX_RSTCTRL, RM_GFX_RSTST */
+#define AM33XX_GFX_RST_SHIFT 0
+#define AM33XX_GFX_RST_MASK (1 << 0)
+
+/* Used by PRM_RSTST */
+#define AM33XX_GLOBAL_COLD_RST_SHIFT 0
+#define AM33XX_GLOBAL_COLD_RST_MASK (1 << 0)
+
+/* Used by PRM_RSTST */
+#define AM33XX_GLOBAL_WARM_SW_RST_SHIFT 1
+#define AM33XX_GLOBAL_WARM_SW_RST_MASK (1 << 1)
+
+/* Used by RM_WKUP_RSTST */
+#define AM33XX_ICECRUSHER_M3_RST_SHIFT 7
+#define AM33XX_ICECRUSHER_M3_RST_MASK (1 << 7)
+
+/* Used by RM_MPU_RSTST */
+#define AM33XX_ICECRUSHER_MPU_RST_SHIFT 6
+#define AM33XX_ICECRUSHER_MPU_RST_MASK (1 << 6)
+
+/* Used by PRM_RSTST */
+#define AM33XX_ICEPICK_RST_SHIFT 9
+#define AM33XX_ICEPICK_RST_MASK (1 << 9)
+
+/* Used by RM_PER_RSTCTRL */
+#define AM33XX_PRUSS_LRST_SHIFT 1
+#define AM33XX_PRUSS_LRST_MASK (1 << 1)
+
+/* Used by PM_PER_PWRSTCTRL */
+#define AM33XX_PRUSS_MEM_ONSTATE_SHIFT 5
+#define AM33XX_PRUSS_MEM_ONSTATE_MASK (0x3 << 5)
+
+/* Used by PM_PER_PWRSTCTRL */
+#define AM33XX_PRUSS_MEM_RETSTATE_SHIFT 7
+#define AM33XX_PRUSS_MEM_RETSTATE_MASK (1 << 7)
+
+/* Used by PM_PER_PWRSTST */
+#define AM33XX_PRUSS_MEM_STATEST_SHIFT 23
+#define AM33XX_PRUSS_MEM_STATEST_MASK (0x3 << 23)
+
+/*
+ * Used by PM_GFX_PWRSTST, PM_CEFUSE_PWRSTST, PM_PER_PWRSTST, PM_MPU_PWRSTST,
+ * PM_WKUP_PWRSTST, PM_RTC_PWRSTST
+ */
+#define AM33XX_INTRANSITION_SHIFT 20
+#define AM33XX_INTRANSITION_MASK (1 << 20)
+
+/* Used by PM_CEFUSE_PWRSTST */
+#define AM33XX_LASTPOWERSTATEENTERED_SHIFT 24
+#define AM33XX_LASTPOWERSTATEENTERED_MASK (0x3 << 24)
+
+/* Used by PM_GFX_PWRSTCTRL, PM_MPU_PWRSTCTRL, PM_RTC_PWRSTCTRL */
+#define AM33XX_LOGICRETSTATE_SHIFT 2
+#define AM33XX_LOGICRETSTATE_MASK (1 << 2)
+
+/* Renamed from LOGICRETSTATE Used by PM_PER_PWRSTCTRL, PM_WKUP_PWRSTCTRL */
+#define AM33XX_LOGICRETSTATE_3_3_SHIFT 3
+#define AM33XX_LOGICRETSTATE_3_3_MASK (1 << 3)
+
+/*
+ * Used by PM_GFX_PWRSTST, PM_CEFUSE_PWRSTST, PM_PER_PWRSTST, PM_MPU_PWRSTST,
+ * PM_WKUP_PWRSTST, PM_RTC_PWRSTST
+ */
+#define AM33XX_LOGICSTATEST_SHIFT 2
+#define AM33XX_LOGICSTATEST_MASK (1 << 2)
+
+/*
+ * Used by PM_GFX_PWRSTCTRL, PM_CEFUSE_PWRSTCTRL, PM_PER_PWRSTCTRL,
+ * PM_MPU_PWRSTCTRL, PM_WKUP_PWRSTCTRL, PM_RTC_PWRSTCTRL
+ */
+#define AM33XX_LOWPOWERSTATECHANGE_SHIFT 4
+#define AM33XX_LOWPOWERSTATECHANGE_MASK (1 << 4)
+
+/* Used by PM_MPU_PWRSTCTRL */
+#define AM33XX_MPU_L1_ONSTATE_SHIFT 18
+#define AM33XX_MPU_L1_ONSTATE_MASK (0x3 << 18)
+
+/* Used by PM_MPU_PWRSTCTRL */
+#define AM33XX_MPU_L1_RETSTATE_SHIFT 22
+#define AM33XX_MPU_L1_RETSTATE_MASK (1 << 22)
+
+/* Used by PM_MPU_PWRSTST */
+#define AM33XX_MPU_L1_STATEST_SHIFT 6
+#define AM33XX_MPU_L1_STATEST_MASK (0x3 << 6)
+
+/* Used by PM_MPU_PWRSTCTRL */
+#define AM33XX_MPU_L2_ONSTATE_SHIFT 20
+#define AM33XX_MPU_L2_ONSTATE_MASK (0x3 << 20)
+
+/* Used by PM_MPU_PWRSTCTRL */
+#define AM33XX_MPU_L2_RETSTATE_SHIFT 23
+#define AM33XX_MPU_L2_RETSTATE_MASK (1 << 23)
+
+/* Used by PM_MPU_PWRSTST */
+#define AM33XX_MPU_L2_STATEST_SHIFT 8
+#define AM33XX_MPU_L2_STATEST_MASK (0x3 << 8)
+
+/* Used by PM_MPU_PWRSTCTRL */
+#define AM33XX_MPU_RAM_ONSTATE_SHIFT 16
+#define AM33XX_MPU_RAM_ONSTATE_MASK (0x3 << 16)
+
+/* Used by PM_MPU_PWRSTCTRL */
+#define AM33XX_MPU_RAM_RETSTATE_SHIFT 24
+#define AM33XX_MPU_RAM_RETSTATE_MASK (1 << 24)
+
+/* Used by PM_MPU_PWRSTST */
+#define AM33XX_MPU_RAM_STATEST_SHIFT 4
+#define AM33XX_MPU_RAM_STATEST_MASK (0x3 << 4)
+
+/* Used by PRM_RSTST */
+#define AM33XX_MPU_SECURITY_VIOL_RST_SHIFT 2
+#define AM33XX_MPU_SECURITY_VIOL_RST_MASK (1 << 2)
+
+/* Used by PRM_SRAM_COUNT */
+#define AM33XX_PCHARGECNT_VALUE_SHIFT 0
+#define AM33XX_PCHARGECNT_VALUE_MASK (0x3f << 0)
+
+/* Used by RM_PER_RSTCTRL */
+#define AM33XX_PCI_LRST_SHIFT 0
+#define AM33XX_PCI_LRST_MASK (1 << 0)
+
+/* Renamed from PCI_LRST Used by RM_PER_RSTST */
+#define AM33XX_PCI_LRST_5_5_SHIFT 5
+#define AM33XX_PCI_LRST_5_5_MASK (1 << 5)
+
+/* Used by PM_PER_PWRSTCTRL */
+#define AM33XX_PER_MEM_ONSTATE_SHIFT 25
+#define AM33XX_PER_MEM_ONSTATE_MASK (0x3 << 25)
+
+/* Used by PM_PER_PWRSTCTRL */
+#define AM33XX_PER_MEM_RETSTATE_SHIFT 29
+#define AM33XX_PER_MEM_RETSTATE_MASK (1 << 29)
+
+/* Used by PM_PER_PWRSTST */
+#define AM33XX_PER_MEM_STATEST_SHIFT 17
+#define AM33XX_PER_MEM_STATEST_MASK (0x3 << 17)
+
+/*
+ * Used by PM_GFX_PWRSTCTRL, PM_CEFUSE_PWRSTCTRL, PM_PER_PWRSTCTRL,
+ * PM_MPU_PWRSTCTRL
+ */
+#define AM33XX_POWERSTATE_SHIFT 0
+#define AM33XX_POWERSTATE_MASK (0x3 << 0)
+
+/* Used by PM_GFX_PWRSTST, PM_CEFUSE_PWRSTST, PM_PER_PWRSTST, PM_MPU_PWRSTST */
+#define AM33XX_POWERSTATEST_SHIFT 0
+#define AM33XX_POWERSTATEST_MASK (0x3 << 0)
+
+/* Used by PM_PER_PWRSTCTRL */
+#define AM33XX_RAM_MEM_ONSTATE_SHIFT 30
+#define AM33XX_RAM_MEM_ONSTATE_MASK (0x3 << 30)
+
+/* Used by PM_PER_PWRSTCTRL */
+#define AM33XX_RAM_MEM_RETSTATE_SHIFT 27
+#define AM33XX_RAM_MEM_RETSTATE_MASK (1 << 27)
+
+/* Used by PM_PER_PWRSTST */
+#define AM33XX_RAM_MEM_STATEST_SHIFT 21
+#define AM33XX_RAM_MEM_STATEST_MASK (0x3 << 21)
+
+/* Used by PRM_LDO_SRAM_CORE_CTRL, PRM_LDO_SRAM_MPU_CTRL */
+#define AM33XX_RETMODE_ENABLE_SHIFT 0
+#define AM33XX_RETMODE_ENABLE_MASK (1 << 0)
+
+/* Used by REVISION_PRM */
+#define AM33XX_REV_SHIFT 0
+#define AM33XX_REV_MASK (0xff << 0)
+
+/* Used by PRM_RSTTIME */
+#define AM33XX_RSTTIME1_SHIFT 0
+#define AM33XX_RSTTIME1_MASK (0xff << 0)
+
+/* Used by PRM_RSTTIME */
+#define AM33XX_RSTTIME2_SHIFT 8
+#define AM33XX_RSTTIME2_MASK (0x1f << 8)
+
+/* Used by PRM_RSTCTRL */
+#define AM33XX_RST_GLOBAL_COLD_SW_SHIFT 1
+#define AM33XX_RST_GLOBAL_COLD_SW_MASK (1 << 1)
+
+/* Used by PRM_RSTCTRL */
+#define AM33XX_RST_GLOBAL_WARM_SW_SHIFT 0
+#define AM33XX_RST_GLOBAL_WARM_SW_MASK (1 << 0)
+
+/* Used by PRM_SRAM_COUNT */
+#define AM33XX_SLPCNT_VALUE_SHIFT 16
+#define AM33XX_SLPCNT_VALUE_MASK (0xff << 16)
+
+/* Used by PRM_LDO_SRAM_CORE_CTRL, PRM_LDO_SRAM_MPU_CTRL */
+#define AM33XX_SRAMLDO_STATUS_SHIFT 8
+#define AM33XX_SRAMLDO_STATUS_MASK (1 << 8)
+
+/* Used by PRM_LDO_SRAM_CORE_CTRL, PRM_LDO_SRAM_MPU_CTRL */
+#define AM33XX_SRAM_IN_TRANSITION_SHIFT 9
+#define AM33XX_SRAM_IN_TRANSITION_MASK (1 << 9)
+
+/* Used by PRM_SRAM_COUNT */
+#define AM33XX_STARTUP_COUNT_SHIFT 24
+#define AM33XX_STARTUP_COUNT_MASK (0xff << 24)
+
+/* Used by PRM_IRQENABLE_M3, PRM_IRQENABLE_MPU */
+#define AM33XX_TRANSITION_EN_SHIFT 8
+#define AM33XX_TRANSITION_EN_MASK (1 << 8)
+
+/* Used by PRM_IRQSTATUS_M3, PRM_IRQSTATUS_MPU */
+#define AM33XX_TRANSITION_ST_SHIFT 8
+#define AM33XX_TRANSITION_ST_MASK (1 << 8)
+
+/* Used by PRM_SRAM_COUNT */
+#define AM33XX_VSETUPCNT_VALUE_SHIFT 8
+#define AM33XX_VSETUPCNT_VALUE_MASK (0xff << 8)
+
+/* Used by PRM_RSTST */
+#define AM33XX_WDT0_RST_SHIFT 3
+#define AM33XX_WDT0_RST_MASK (1 << 3)
+
+/* Used by PRM_RSTST */
+#define AM33XX_WDT1_RST_SHIFT 4
+#define AM33XX_WDT1_RST_MASK (1 << 4)
+
+/* Used by RM_WKUP_RSTCTRL */
+#define AM33XX_WKUP_M3_LRST_SHIFT 3
+#define AM33XX_WKUP_M3_LRST_MASK (1 << 3)
+
+/* Renamed from WKUP_M3_LRST Used by RM_WKUP_RSTST */
+#define AM33XX_WKUP_M3_LRST_5_5_SHIFT 5
+#define AM33XX_WKUP_M3_LRST_5_5_MASK (1 << 5)
+
+#endif
diff --git a/arch/arm/mach-omap2/prm33xx.c b/arch/arm/mach-omap2/prm33xx.c
new file mode 100644
index 0000000..7444855
--- /dev/null
+++ b/arch/arm/mach-omap2/prm33xx.c
@@ -0,0 +1,134 @@
+/*
+ * AM33XX PRM functions
+ *
+ * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/io.h>
+
+#include <plat/common.h>
+
+#include "common.h"
+#include "prm33xx.h"
+#include "prm-regbits-33xx.h"
+
+/* Read a register in a PRM instance */
+u32 am33xx_prm_read_reg(s16 inst, u16 idx)
+{
+ return __raw_readl(prm_base + inst + idx);
+}
+
+/* Write into a register in a PRM instance */
+void am33xx_prm_write_reg(u32 val, s16 inst, u16 idx)
+{
+ __raw_writel(val, prm_base + inst + idx);
+}
+
+/* Read-modify-write a register in PRM. Caller must lock */
+u32 am33xx_prm_rmw_reg_bits(u32 mask, u32 bits, s16 inst, s16 idx)
+{
+ u32 v;
+
+ v = am33xx_prm_read_reg(inst, idx);
+ v &= ~mask;
+ v |= bits;
+ am33xx_prm_write_reg(v, inst, idx);
+
+ return v;
+}
+
+/**
+ * am33xx_prm_is_hardreset_asserted - read the HW reset line state of
+ * submodules contained in the hwmod module
+ * @shift: register bit shift corresponding to the reset line to check
+ * @inst: CM instance register offset (*_INST macro)
+ * @rstctrl_offs: RM_RSTCTRL register address offset for this module
+ *
+ * Returns 1 if the (sub)module hardreset line is currently asserted,
+ * 0 if the (sub)module hardreset line is not currently asserted, or
+ * -EINVAL upon parameter error.
+ */
+int am33xx_prm_is_hardreset_asserted(u8 shift, s16 inst, u16 rstctrl_offs)
+{
+ u32 v;
+
+ v = am33xx_prm_read_reg(inst, rstctrl_offs);
+ v &= 1 << shift;
+ v >>= shift;
+
+ return v;
+}
+
+/**
+ * am33xx_prm_assert_hardreset - assert the HW reset line of a submodule
+ * @shift: register bit shift corresponding to the reset line to assert
+ * @inst: CM instance register offset (*_INST macro)
+ * @rstctrl_reg: RM_RSTCTRL register address for this module
+ *
+ * Some IPs like dsp, ipu or iva contain processors that require an HW
+ * reset line to be asserted / deasserted in order to fully enable the
+ * IP. These modules may have multiple hard-reset lines that reset
+ * different 'submodules' inside the IP block. This function will
+ * place the submodule into reset. Returns 0 upon success or -EINVAL
+ * upon an argument error.
+ */
+int am33xx_prm_assert_hardreset(u8 shift, s16 inst, u16 rstctrl_offs)
+{
+ u32 mask = 1 << shift;
+
+ am33xx_prm_rmw_reg_bits(mask, mask, inst, rstctrl_offs);
+
+ return 0;
+}
+
+/**
+ * am33xx_prm_deassert_hardreset - deassert a submodule hardreset line and
+ * wait
+ * @shift: register bit shift corresponding to the reset line to deassert
+ * @inst: CM instance register offset (*_INST macro)
+ * @rstctrl_reg: RM_RSTCTRL register address for this module
+ * @rstst_reg: RM_RSTST register address for this module
+ *
+ * Some IPs like dsp, ipu or iva contain processors that require an HW
+ * reset line to be asserted / deasserted in order to fully enable the
+ * IP. These modules may have multiple hard-reset lines that reset
+ * different 'submodules' inside the IP block. This function will
+ * take the submodule out of reset and wait until the PRCM indicates
+ * that the reset has completed before returning. Returns 0 upon success or
+ * -EINVAL upon an argument error, -EEXIST if the submodule was already out
+ * of reset, or -EBUSY if the submodule did not exit reset promptly.
+ */
+int am33xx_prm_deassert_hardreset(u8 shift, s16 inst,
+ u16 rstctrl_offs, u16 rstst_offs)
+{
+ int c;
+ u32 mask = 1 << shift;
+
+ /* Check the current status to avoid de-asserting the line twice */
+ if (am33xx_prm_is_hardreset_asserted(shift, inst, rstctrl_offs) == 0)
+ return -EEXIST;
+
+ /* Clear the reset status by writing 1 to the status bit */
+ am33xx_prm_rmw_reg_bits(0xffffffff, mask, inst, rstst_offs);
+ /* de-assert the reset control line */
+ am33xx_prm_rmw_reg_bits(mask, 0, inst, rstctrl_offs);
+ /* wait the status to be set */
+
+ omap_test_timeout(am33xx_prm_is_hardreset_asserted(shift, inst,
+ rstst_offs), MAX_MODULE_HARDRESET_WAIT, c);
+
+ return (c == MAX_MODULE_HARDRESET_WAIT) ? -EBUSY : 0;
+}
diff --git a/arch/arm/mach-omap2/prm33xx.h b/arch/arm/mach-omap2/prm33xx.h
new file mode 100644
index 0000000..3f25c56
--- /dev/null
+++ b/arch/arm/mach-omap2/prm33xx.h
@@ -0,0 +1,129 @@
+/*
+ * AM33XX PRM instance offset macros
+ *
+ * Copyright (C) 2011-2012 Texas Instruments Incorporated - http://www.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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __ARCH_ARM_MACH_OMAP2_PRM33XX_H
+#define __ARCH_ARM_MACH_OMAP2_PRM33XX_H
+
+#include "prcm-common.h"
+#include "prm.h"
+
+#define AM33XX_PRM_BASE 0x44E00000
+
+#define AM33XX_PRM_REGADDR(inst, reg) \
+ AM33XX_L4_WK_IO_ADDRESS(AM33XX_PRM_BASE + (inst) + (reg))
+
+
+/* PRM instances */
+#define AM33XX_PRM_OCP_SOCKET_MOD 0x0B00
+#define AM33XX_PRM_PER_MOD 0x0C00
+#define AM33XX_PRM_WKUP_MOD 0x0D00
+#define AM33XX_PRM_MPU_MOD 0x0E00
+#define AM33XX_PRM_DEVICE_MOD 0x0F00
+#define AM33XX_PRM_RTC_MOD 0x1000
+#define AM33XX_PRM_GFX_MOD 0x1100
+#define AM33XX_PRM_CEFUSE_MOD 0x1200
+
+/* PRM */
+
+/* PRM.OCP_SOCKET_PRM register offsets */
+#define AM33XX_REVISION_PRM_OFFSET 0x0000
+#define AM33XX_REVISION_PRM AM33XX_PRM_REGADDR(AM33XX_PRM_OCP_SOCKET_MOD, 0x0000)
+#define AM33XX_PRM_IRQSTATUS_MPU_OFFSET 0x0004
+#define AM33XX_PRM_IRQSTATUS_MPU AM33XX_PRM_REGADDR(AM33XX_PRM_OCP_SOCKET_MOD, 0x0004)
+#define AM33XX_PRM_IRQENABLE_MPU_OFFSET 0x0008
+#define AM33XX_PRM_IRQENABLE_MPU AM33XX_PRM_REGADDR(AM33XX_PRM_OCP_SOCKET_MOD, 0x0008)
+#define AM33XX_PRM_IRQSTATUS_M3_OFFSET 0x000c
+#define AM33XX_PRM_IRQSTATUS_M3 AM33XX_PRM_REGADDR(AM33XX_PRM_OCP_SOCKET_MOD, 0x000c)
+#define AM33XX_PRM_IRQENABLE_M3_OFFSET 0x0010
+#define AM33XX_PRM_IRQENABLE_M3 AM33XX_PRM_REGADDR(AM33XX_PRM_OCP_SOCKET_MOD, 0x0010)
+
+/* PRM.PER_PRM register offsets */
+#define AM33XX_RM_PER_RSTCTRL_OFFSET 0x0000
+#define AM33XX_RM_PER_RSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_PER_MOD, 0x0000)
+#define AM33XX_RM_PER_RSTST_OFFSET 0x0004
+#define AM33XX_RM_PER_RSTST AM33XX_PRM_REGADDR(AM33XX_PRM_PER_MOD, 0x0004)
+#define AM33XX_PM_PER_PWRSTST_OFFSET 0x0008
+#define AM33XX_PM_PER_PWRSTST AM33XX_PRM_REGADDR(AM33XX_PRM_PER_MOD, 0x0008)
+#define AM33XX_PM_PER_PWRSTCTRL_OFFSET 0x000c
+#define AM33XX_PM_PER_PWRSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_PER_MOD, 0x000c)
+
+/* PRM.WKUP_PRM register offsets */
+#define AM33XX_RM_WKUP_RSTCTRL_OFFSET 0x0000
+#define AM33XX_RM_WKUP_RSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_WKUP_MOD, 0x0000)
+#define AM33XX_PM_WKUP_PWRSTCTRL_OFFSET 0x0004
+#define AM33XX_PM_WKUP_PWRSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_WKUP_MOD, 0x0004)
+#define AM33XX_PM_WKUP_PWRSTST_OFFSET 0x0008
+#define AM33XX_PM_WKUP_PWRSTST AM33XX_PRM_REGADDR(AM33XX_PRM_WKUP_MOD, 0x0008)
+#define AM33XX_RM_WKUP_RSTST_OFFSET 0x000c
+#define AM33XX_RM_WKUP_RSTST AM33XX_PRM_REGADDR(AM33XX_PRM_WKUP_MOD, 0x000c)
+
+/* PRM.MPU_PRM register offsets */
+#define AM33XX_PM_MPU_PWRSTCTRL_OFFSET 0x0000
+#define AM33XX_PM_MPU_PWRSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_MPU_MOD, 0x0000)
+#define AM33XX_PM_MPU_PWRSTST_OFFSET 0x0004
+#define AM33XX_PM_MPU_PWRSTST AM33XX_PRM_REGADDR(AM33XX_PRM_MPU_MOD, 0x0004)
+#define AM33XX_RM_MPU_RSTST_OFFSET 0x0008
+#define AM33XX_RM_MPU_RSTST AM33XX_PRM_REGADDR(AM33XX_PRM_MPU_MOD, 0x0008)
+
+/* PRM.DEVICE_PRM register offsets */
+#define AM33XX_PRM_RSTCTRL_OFFSET 0x0000
+#define AM33XX_PRM_RSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_DEVICE_MOD, 0x0000)
+#define AM33XX_PRM_RSTTIME_OFFSET 0x0004
+#define AM33XX_PRM_RSTTIME AM33XX_PRM_REGADDR(AM33XX_PRM_DEVICE_MOD, 0x0004)
+#define AM33XX_PRM_RSTST_OFFSET 0x0008
+#define AM33XX_PRM_RSTST AM33XX_PRM_REGADDR(AM33XX_PRM_DEVICE_MOD, 0x0008)
+#define AM33XX_PRM_SRAM_COUNT_OFFSET 0x000c
+#define AM33XX_PRM_SRAM_COUNT AM33XX_PRM_REGADDR(AM33XX_PRM_DEVICE_MOD, 0x000c)
+#define AM33XX_PRM_LDO_SRAM_CORE_SETUP_OFFSET 0x0010
+#define AM33XX_PRM_LDO_SRAM_CORE_SETUP AM33XX_PRM_REGADDR(AM33XX_PRM_DEVICE_MOD, 0x0010)
+#define AM33XX_PRM_LDO_SRAM_CORE_CTRL_OFFSET 0x0014
+#define AM33XX_PRM_LDO_SRAM_CORE_CTRL AM33XX_PRM_REGADDR(AM33XX_PRM_DEVICE_MOD, 0x0014)
+#define AM33XX_PRM_LDO_SRAM_MPU_SETUP_OFFSET 0x0018
+#define AM33XX_PRM_LDO_SRAM_MPU_SETUP AM33XX_PRM_REGADDR(AM33XX_PRM_DEVICE_MOD, 0x0018)
+#define AM33XX_PRM_LDO_SRAM_MPU_CTRL_OFFSET 0x001c
+#define AM33XX_PRM_LDO_SRAM_MPU_CTRL AM33XX_PRM_REGADDR(AM33XX_PRM_DEVICE_MOD, 0x001c)
+
+/* PRM.RTC_PRM register offsets */
+#define AM33XX_PM_RTC_PWRSTCTRL_OFFSET 0x0000
+#define AM33XX_PM_RTC_PWRSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_RTC_MOD, 0x0000)
+#define AM33XX_PM_RTC_PWRSTST_OFFSET 0x0004
+#define AM33XX_PM_RTC_PWRSTST AM33XX_PRM_REGADDR(AM33XX_PRM_RTC_MOD, 0x0004)
+
+/* PRM.GFX_PRM register offsets */
+#define AM33XX_PM_GFX_PWRSTCTRL_OFFSET 0x0000
+#define AM33XX_PM_GFX_PWRSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_GFX_MOD, 0x0000)
+#define AM33XX_RM_GFX_RSTCTRL_OFFSET 0x0004
+#define AM33XX_RM_GFX_RSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_GFX_MOD, 0x0004)
+#define AM33XX_PM_GFX_PWRSTST_OFFSET 0x0010
+#define AM33XX_PM_GFX_PWRSTST AM33XX_PRM_REGADDR(AM33XX_PRM_GFX_MOD, 0x0010)
+#define AM33XX_RM_GFX_RSTST_OFFSET 0x0014
+#define AM33XX_RM_GFX_RSTST AM33XX_PRM_REGADDR(AM33XX_PRM_GFX_MOD, 0x0014)
+
+/* PRM.CEFUSE_PRM register offsets */
+#define AM33XX_PM_CEFUSE_PWRSTCTRL_OFFSET 0x0000
+#define AM33XX_PM_CEFUSE_PWRSTCTRL AM33XX_PRM_REGADDR(AM33XX_PRM_CEFUSE_MOD, 0x0000)
+#define AM33XX_PM_CEFUSE_PWRSTST_OFFSET 0x0004
+#define AM33XX_PM_CEFUSE_PWRSTST AM33XX_PRM_REGADDR(AM33XX_PRM_CEFUSE_MOD, 0x0004)
+
+extern u32 am33xx_prm_read_reg(s16 inst, u16 idx);
+extern void am33xx_prm_write_reg(u32 val, s16 inst, u16 idx);
+extern u32 am33xx_prm_rmw_reg_bits(u32 mask, u32 bits, s16 inst, s16 idx);
+extern void am33xx_prm_global_warm_sw_reset(void);
+extern int am33xx_prm_is_hardreset_asserted(u8 shift, s16 inst,
+ u16 rstctrl_offs);
+extern int am33xx_prm_assert_hardreset(u8 shift, s16 inst, u16 rstctrl_offs);
+extern int am33xx_prm_deassert_hardreset(u8 shift, s16 inst,
+ u16 rstctrl_offs, u16 rstst_offs);
+#endif
--
1.7.0.4
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