Move the low-level SoC-specific powerdomain control functions into
prm*.c. For example, OMAP2xxx low-level powerdomain functions go into
prm2xxx.c. Then remove the unnecessary powerdomain*xxx*.c files.
The objective is to centralize low-level PRM register accesses into
the prm*.[ch] files, and then to export an OMAP SoC-independent API to
higher-level OMAP power management code.
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
Cc: Rajendra Nayak <rnayak@xxxxxx>
Cc: Vaibhav Hiremath <hvaibhav@xxxxxx>
---
arch/arm/mach-omap2/Makefile | 1
arch/arm/mach-omap2/powerdomain2xxx_3xxx.c | 242 ------------------------
arch/arm/mach-omap2/powerdomain33xx.c | 229 ----------------------
arch/arm/mach-omap2/powerdomain44xx.c | 285 ----------------------------
arch/arm/mach-omap2/prm2xxx.c | 40 ++++
arch/arm/mach-omap2/prm2xxx_3xxx.c | 112 +++++++++++
arch/arm/mach-omap2/prm2xxx_3xxx.h | 13 +
arch/arm/mach-omap2/prm33xx.c | 202 ++++++++++++++++++++
arch/arm/mach-omap2/prm3xxx.c | 106 ++++++++++
arch/arm/mach-omap2/prm44xx.c | 264 ++++++++++++++++++++++++++
10 files changed, 736 insertions(+), 758 deletions(-)
delete mode 100644 arch/arm/mach-omap2/powerdomain2xxx_3xxx.c
delete mode 100644 arch/arm/mach-omap2/powerdomain33xx.c
delete mode 100644 arch/arm/mach-omap2/powerdomain44xx.c
create mode 100644 arch/arm/mach-omap2/prm2xxx.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 20849604..7404e3d 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -95,6 +95,7 @@ endif
# PRCM
obj-y += prcm.o prm_common.o
obj-$(CONFIG_ARCH_OMAP2) += cm2xxx_3xxx.o prm2xxx_3xxx.o
+obj-$(CONFIG_ARCH_OMAP2) += prm2xxx.o
obj-$(CONFIG_ARCH_OMAP3) += cm2xxx_3xxx.o prm2xxx_3xxx.o
obj-$(CONFIG_ARCH_OMAP3) += prm3xxx.o
obj-$(CONFIG_ARCH_OMAP3) += vc3xxx_data.o vp3xxx_data.o
diff --git a/arch/arm/mach-omap2/powerdomain2xxx_3xxx.c b/arch/arm/mach-omap2/powerdomain2xxx_3xxx.c
deleted file mode 100644
index 3950ccf..0000000
--- a/arch/arm/mach-omap2/powerdomain2xxx_3xxx.c
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- * OMAP2 and OMAP3 powerdomain control
- *
- * Copyright (C) 2009-2011 Texas Instruments, Inc.
- * Copyright (C) 2007-2009 Nokia Corporation
- *
- * Derived from mach-omap2/powerdomain.c written by Paul Walmsley
- * Rajendra Nayak <rnayak@xxxxxx>
- *
- * 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 <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/bug.h>
-
-#include <plat/prcm.h>
-
-#include "powerdomain.h"
-#include "prm.h"
-#include "prm-regbits-24xx.h"
-#include "prm-regbits-34xx.h"
-
-
-/* Common functions across OMAP2 and OMAP3 */
-static int omap2_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
-{
- omap2_prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
- (pwrst << OMAP_POWERSTATE_SHIFT),
- pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
- return 0;
-}
-
-static int omap2_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
-{
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP2_PM_PWSTCTRL,
- OMAP_POWERSTATE_MASK);
-}
-
-static int omap2_pwrdm_read_pwrst(struct powerdomain *pwrdm)
-{
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP2_PM_PWSTST,
- OMAP_POWERSTATEST_MASK);
-}
-
-static int omap2_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
- u8 pwrst)
-{
- u32 m;
-
- m = omap2_pwrdm_get_mem_bank_onstate_mask(bank);
-
- omap2_prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
- OMAP2_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap2_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
- u8 pwrst)
-{
- u32 m;
-
- m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
-
- omap2_prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
- OMAP2_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap2_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
-{
- u32 m;
-
- m = omap2_pwrdm_get_mem_bank_stst_mask(bank);
-
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTST,
- m);
-}
-
-static int omap2_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
-{
- u32 m;
-
- m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
-
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP2_PM_PWSTCTRL, m);
-}
-
-static int omap2_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
-{
- u32 v;
-
- v = pwrst << __ffs(OMAP3430_LOGICL1CACHERETSTATE_MASK);
- omap2_prm_rmw_mod_reg_bits(OMAP3430_LOGICL1CACHERETSTATE_MASK, v,
- pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap2_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 ((omap2_prm_read_mod_reg(pwrdm->prcm_offs, OMAP2_PM_PWSTST) &
- OMAP_INTRANSITION_MASK) &&
- (c++ < PWRDM_TRANSITION_BAILOUT))
- udelay(1);
-
- if (c > PWRDM_TRANSITION_BAILOUT) {
- pr_err("powerdomain: %s: waited too long to complete transition\n",
- pwrdm->name);
- return -EAGAIN;
- }
-
- pr_debug("powerdomain: completed transition in %d loops\n", c);
-
- return 0;
-}
-
-/* Applicable only for OMAP3. Not supported on OMAP2 */
-static int omap3_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
-{
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP3430_PM_PREPWSTST,
- OMAP3430_LASTPOWERSTATEENTERED_MASK);
-}
-
-static int omap3_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
-{
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP2_PM_PWSTST,
- OMAP3430_LOGICSTATEST_MASK);
-}
-
-static int omap3_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
-{
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP2_PM_PWSTCTRL,
- OMAP3430_LOGICSTATEST_MASK);
-}
-
-static int omap3_pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
-{
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP3430_PM_PREPWSTST,
- OMAP3430_LASTLOGICSTATEENTERED_MASK);
-}
-
-static int omap3_get_mem_bank_lastmemst_mask(u8 bank)
-{
- switch (bank) {
- case 0:
- return OMAP3430_LASTMEM1STATEENTERED_MASK;
- case 1:
- return OMAP3430_LASTMEM2STATEENTERED_MASK;
- case 2:
- return OMAP3430_LASTSHAREDL2CACHEFLATSTATEENTERED_MASK;
- case 3:
- return OMAP3430_LASTL2FLATMEMSTATEENTERED_MASK;
- default:
- WARN_ON(1); /* should never happen */
- return -EEXIST;
- }
- return 0;
-}
-
-static int omap3_pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
-{
- u32 m;
-
- m = omap3_get_mem_bank_lastmemst_mask(bank);
-
- return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
- OMAP3430_PM_PREPWSTST, m);
-}
-
-static int omap3_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
-{
- omap2_prm_write_mod_reg(0, pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST);
- return 0;
-}
-
-static int omap3_pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm)
-{
- return omap2_prm_rmw_mod_reg_bits(0,
- 1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT,
- pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
-}
-
-static int omap3_pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm)
-{
- return omap2_prm_rmw_mod_reg_bits(1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT,
- 0, pwrdm->prcm_offs,
- OMAP2_PM_PWSTCTRL);
-}
-
-struct pwrdm_ops omap2_pwrdm_operations = {
- .pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst,
- .pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst,
- .pwrdm_read_pwrst = omap2_pwrdm_read_pwrst,
- .pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst,
- .pwrdm_set_mem_onst = omap2_pwrdm_set_mem_onst,
- .pwrdm_set_mem_retst = omap2_pwrdm_set_mem_retst,
- .pwrdm_read_mem_pwrst = omap2_pwrdm_read_mem_pwrst,
- .pwrdm_read_mem_retst = omap2_pwrdm_read_mem_retst,
- .pwrdm_wait_transition = omap2_pwrdm_wait_transition,
-};
-
-struct pwrdm_ops omap3_pwrdm_operations = {
- .pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst,
- .pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst,
- .pwrdm_read_pwrst = omap2_pwrdm_read_pwrst,
- .pwrdm_read_prev_pwrst = omap3_pwrdm_read_prev_pwrst,
- .pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst,
- .pwrdm_read_logic_pwrst = omap3_pwrdm_read_logic_pwrst,
- .pwrdm_read_logic_retst = omap3_pwrdm_read_logic_retst,
- .pwrdm_read_prev_logic_pwrst = omap3_pwrdm_read_prev_logic_pwrst,
- .pwrdm_set_mem_onst = omap2_pwrdm_set_mem_onst,
- .pwrdm_set_mem_retst = omap2_pwrdm_set_mem_retst,
- .pwrdm_read_mem_pwrst = omap2_pwrdm_read_mem_pwrst,
- .pwrdm_read_mem_retst = omap2_pwrdm_read_mem_retst,
- .pwrdm_read_prev_mem_pwrst = omap3_pwrdm_read_prev_mem_pwrst,
- .pwrdm_clear_all_prev_pwrst = omap3_pwrdm_clear_all_prev_pwrst,
- .pwrdm_enable_hdwr_sar = omap3_pwrdm_enable_hdwr_sar,
- .pwrdm_disable_hdwr_sar = omap3_pwrdm_disable_hdwr_sar,
- .pwrdm_wait_transition = omap2_pwrdm_wait_transition,
-};
diff --git a/arch/arm/mach-omap2/powerdomain33xx.c b/arch/arm/mach-omap2/powerdomain33xx.c
deleted file mode 100644
index 67c5663..0000000
--- a/arch/arm/mach-omap2/powerdomain33xx.c
+++ /dev/null
@@ -1,229 +0,0 @@
-/*
- * 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@xxxxxx>
- *
- * 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) {
- pr_err("powerdomain: %s: waited too long 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/powerdomain44xx.c b/arch/arm/mach-omap2/powerdomain44xx.c
deleted file mode 100644
index aceb4f4..0000000
--- a/arch/arm/mach-omap2/powerdomain44xx.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/*
- * OMAP4 powerdomain control
- *
- * Copyright (C) 2009-2010, 2012 Texas Instruments, Inc.
- * Copyright (C) 2007-2009 Nokia Corporation
- *
- * Derived from mach-omap2/powerdomain.c written by Paul Walmsley
- * Rajendra Nayak <rnayak@xxxxxx>
- *
- * 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 <linux/errno.h>
-#include <linux/delay.h>
-#include <linux/bug.h>
-
-#include "powerdomain.h"
-#include <plat/prcm.h>
-#include "prm2xxx_3xxx.h"
-#include "prm44xx.h"
-#include "prminst44xx.h"
-#include "prm-regbits-44xx.h"
-
-static int omap4_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
-{
- omap4_prminst_rmw_inst_reg_bits(OMAP_POWERSTATE_MASK,
- (pwrst << OMAP_POWERSTATE_SHIFT),
- pwrdm->prcm_partition,
- pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
- return 0;
-}
-
-static int omap4_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
- v &= OMAP_POWERSTATE_MASK;
- v >>= OMAP_POWERSTATE_SHIFT;
-
- return v;
-}
-
-static int omap4_pwrdm_read_pwrst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTST);
- v &= OMAP_POWERSTATEST_MASK;
- v >>= OMAP_POWERSTATEST_SHIFT;
-
- return v;
-}
-
-static int omap4_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTST);
- v &= OMAP4430_LASTPOWERSTATEENTERED_MASK;
- v >>= OMAP4430_LASTPOWERSTATEENTERED_SHIFT;
-
- return v;
-}
-
-static int omap4_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
-{
- omap4_prminst_rmw_inst_reg_bits(OMAP4430_LOWPOWERSTATECHANGE_MASK,
- (1 << OMAP4430_LOWPOWERSTATECHANGE_SHIFT),
- pwrdm->prcm_partition,
- pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
- return 0;
-}
-
-static int omap4_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
-{
- omap4_prminst_rmw_inst_reg_bits(OMAP4430_LASTPOWERSTATEENTERED_MASK,
- OMAP4430_LASTPOWERSTATEENTERED_MASK,
- pwrdm->prcm_partition,
- pwrdm->prcm_offs, OMAP4_PM_PWSTST);
- return 0;
-}
-
-static int omap4_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
-{
- u32 v;
-
- v = pwrst << __ffs(OMAP4430_LOGICRETSTATE_MASK);
- omap4_prminst_rmw_inst_reg_bits(OMAP4430_LOGICRETSTATE_MASK, v,
- pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap4_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
- u8 pwrst)
-{
- u32 m;
-
- m = omap2_pwrdm_get_mem_bank_onstate_mask(bank);
-
- omap4_prminst_rmw_inst_reg_bits(m, (pwrst << __ffs(m)),
- pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap4_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
- u8 pwrst)
-{
- u32 m;
-
- m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
-
- omap4_prminst_rmw_inst_reg_bits(m, (pwrst << __ffs(m)),
- pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
-
- return 0;
-}
-
-static int omap4_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTST);
- v &= OMAP4430_LOGICSTATEST_MASK;
- v >>= OMAP4430_LOGICSTATEST_SHIFT;
-
- return v;
-}
-
-static int omap4_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
-{
- u32 v;
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
- v &= OMAP4430_LOGICRETSTATE_MASK;
- v >>= OMAP4430_LOGICRETSTATE_SHIFT;
-
- return v;
-}
-
-/**
- * omap4_pwrdm_read_prev_logic_pwrst - read the previous logic powerstate
- * @pwrdm: struct powerdomain * to read the state for
- *
- * Reads the previous logic powerstate for a powerdomain. This
- * function must determine the previous logic powerstate by first
- * checking the previous powerstate for the domain. If that was OFF,
- * then logic has been lost. If previous state was RETENTION, the
- * function reads the setting for the next retention logic state to
- * see the actual value. In every other case, the logic is
- * retained. Returns either PWRDM_POWER_OFF or PWRDM_POWER_RET
- * depending whether the logic was retained or not.
- */
-static int omap4_pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
-{
- int state;
-
- state = omap4_pwrdm_read_prev_pwrst(pwrdm);
-
- if (state == PWRDM_POWER_OFF)
- return PWRDM_POWER_OFF;
-
- if (state != PWRDM_POWER_RET)
- return PWRDM_POWER_RET;
-
- return omap4_pwrdm_read_logic_retst(pwrdm);
-}
-
-static int omap4_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
-{
- u32 m, v;
-
- m = omap2_pwrdm_get_mem_bank_stst_mask(bank);
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTST);
- v &= m;
- v >>= __ffs(m);
-
- return v;
-}
-
-static int omap4_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
-{
- u32 m, v;
-
- m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
-
- v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
- OMAP4_PM_PWSTCTRL);
- v &= m;
- v >>= __ffs(m);
-
- return v;
-}
-
-/**
- * omap4_pwrdm_read_prev_mem_pwrst - reads the previous memory powerstate
- * @pwrdm: struct powerdomain * to read mem powerstate for
- * @bank: memory bank index
- *
- * Reads the previous memory powerstate for a powerdomain. This
- * function must determine the previous memory powerstate by first
- * checking the previous powerstate for the domain. If that was OFF,
- * then logic has been lost. If previous state was RETENTION, the
- * function reads the setting for the next memory retention state to
- * see the actual value. In every other case, the logic is
- * retained. Returns either PWRDM_POWER_OFF or PWRDM_POWER_RET
- * depending whether logic was retained or not.
- */
-static int omap4_pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
-{
- int state;
-
- state = omap4_pwrdm_read_prev_pwrst(pwrdm);
-
- if (state == PWRDM_POWER_OFF)
- return PWRDM_POWER_OFF;
-
- if (state != PWRDM_POWER_RET)
- return PWRDM_POWER_RET;
-
- return omap4_pwrdm_read_mem_retst(pwrdm, bank);
-}
-
-static int omap4_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 ((omap4_prminst_read_inst_reg(pwrdm->prcm_partition,
- pwrdm->prcm_offs,
- OMAP4_PM_PWSTST) &
- OMAP_INTRANSITION_MASK) &&
- (c++ < PWRDM_TRANSITION_BAILOUT))
- udelay(1);
-
- if (c > PWRDM_TRANSITION_BAILOUT) {
- pr_err("powerdomain: %s: waited too long to complete transition\n",
- pwrdm->name);
- return -EAGAIN;
- }
-
- pr_debug("powerdomain: completed transition in %d loops\n", c);
-
- return 0;
-}
-
-struct pwrdm_ops omap4_pwrdm_operations = {
- .pwrdm_set_next_pwrst = omap4_pwrdm_set_next_pwrst,
- .pwrdm_read_next_pwrst = omap4_pwrdm_read_next_pwrst,
- .pwrdm_read_pwrst = omap4_pwrdm_read_pwrst,
- .pwrdm_read_prev_pwrst = omap4_pwrdm_read_prev_pwrst,
- .pwrdm_set_lowpwrstchange = omap4_pwrdm_set_lowpwrstchange,
- .pwrdm_clear_all_prev_pwrst = omap4_pwrdm_clear_all_prev_pwrst,
- .pwrdm_set_logic_retst = omap4_pwrdm_set_logic_retst,
- .pwrdm_read_logic_pwrst = omap4_pwrdm_read_logic_pwrst,
- .pwrdm_read_prev_logic_pwrst = omap4_pwrdm_read_prev_logic_pwrst,
- .pwrdm_read_logic_retst = omap4_pwrdm_read_logic_retst,
- .pwrdm_read_mem_pwrst = omap4_pwrdm_read_mem_pwrst,
- .pwrdm_read_mem_retst = omap4_pwrdm_read_mem_retst,
- .pwrdm_read_prev_mem_pwrst = omap4_pwrdm_read_prev_mem_pwrst,
- .pwrdm_set_mem_onst = omap4_pwrdm_set_mem_onst,
- .pwrdm_set_mem_retst = omap4_pwrdm_set_mem_retst,
- .pwrdm_wait_transition = omap4_pwrdm_wait_transition,
-};
diff --git a/arch/arm/mach-omap2/prm2xxx.c b/arch/arm/mach-omap2/prm2xxx.c
new file mode 100644
index 0000000..14940c4
--- /dev/null
+++ b/arch/arm/mach-omap2/prm2xxx.c
@@ -0,0 +1,40 @@
+/*
+ * OMAP2xxx PRM module functions
+ *
+ * Copyright (C) 2010-2012 Texas Instruments, Inc.
+ * Copyright (C) 2010 Nokia Corporation
+ * Benoît Cousson
+ * Paul Walmsley
+ *
+ * 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/kernel.h>
+#include <linux/errno.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+
+#include "common.h"
+#include <plat/cpu.h>
+#include <plat/prcm.h>
+
+#include "vp.h"
+#include "powerdomain.h"
+#include "prm2xxx.h"
+#include "cm2xxx_3xxx.h"
+#include "prm-regbits-24xx.h"
+
+struct pwrdm_ops omap2_pwrdm_operations = {
+ .pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst,
+ .pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst,
+ .pwrdm_read_pwrst = omap2_pwrdm_read_pwrst,
+ .pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst,
+ .pwrdm_set_mem_onst = omap2_pwrdm_set_mem_onst,
+ .pwrdm_set_mem_retst = omap2_pwrdm_set_mem_retst,
+ .pwrdm_read_mem_pwrst = omap2_pwrdm_read_mem_pwrst,
+ .pwrdm_read_mem_retst = omap2_pwrdm_read_mem_retst,
+ .pwrdm_wait_transition = omap2_pwrdm_wait_transition,
+};
diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.c b/arch/arm/mach-omap2/prm2xxx_3xxx.c
index 0d6cc54..bdddf5c 100644
--- a/arch/arm/mach-omap2/prm2xxx_3xxx.c
+++ b/arch/arm/mach-omap2/prm2xxx_3xxx.c
@@ -17,7 +17,7 @@
#include <linux/io.h>
#include "common.h"
-
+#include "powerdomain.h"
#include "prm2xxx_3xxx.h"
#include "prm-regbits-24xx.h"
@@ -98,3 +98,113 @@ int omap2_prm_deassert_hardreset(s16 prm_mod, u8 rst_shift, u8 st_shift)
return (c == MAX_MODULE_HARDRESET_WAIT) ? -EBUSY : 0;
}
+
+/* Powerdomain low-level functions */
+
+/* Common functions across OMAP2 and OMAP3 */
+int omap2_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
+{
+ omap2_prm_rmw_mod_reg_bits(OMAP_POWERSTATE_MASK,
+ (pwrst << OMAP_POWERSTATE_SHIFT),
+ pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+ return 0;
+}
+
+int omap2_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
+{
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP2_PM_PWSTCTRL,
+ OMAP_POWERSTATE_MASK);
+}
+
+int omap2_pwrdm_read_pwrst(struct powerdomain *pwrdm)
+{
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP2_PM_PWSTST,
+ OMAP_POWERSTATEST_MASK);
+}
+
+int omap2_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
+ u8 pwrst)
+{
+ u32 m;
+
+ m = omap2_pwrdm_get_mem_bank_onstate_mask(bank);
+
+ omap2_prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
+ OMAP2_PM_PWSTCTRL);
+
+ return 0;
+}
+
+int omap2_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
+ u8 pwrst)
+{
+ u32 m;
+
+ m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
+
+ omap2_prm_rmw_mod_reg_bits(m, (pwrst << __ffs(m)), pwrdm->prcm_offs,
+ OMAP2_PM_PWSTCTRL);
+
+ return 0;
+}
+
+int omap2_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
+{
+ u32 m;
+
+ m = omap2_pwrdm_get_mem_bank_stst_mask(bank);
+
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs, OMAP2_PM_PWSTST,
+ m);
+}
+
+int omap2_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
+{
+ u32 m;
+
+ m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
+
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP2_PM_PWSTCTRL, m);
+}
+
+int omap2_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
+{
+ u32 v;
+
+ v = pwrst << __ffs(OMAP_LOGICRETSTATE_MASK);
+ omap2_prm_rmw_mod_reg_bits(OMAP_LOGICRETSTATE_MASK, v, pwrdm->prcm_offs,
+ OMAP2_PM_PWSTCTRL);
+
+ return 0;
+}
+
+int omap2_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 ((omap2_prm_read_mod_reg(pwrdm->prcm_offs, OMAP2_PM_PWSTST) &
+ OMAP_INTRANSITION_MASK) &&
+ (c++ < PWRDM_TRANSITION_BAILOUT))
+ udelay(1);
+
+ if (c > PWRDM_TRANSITION_BAILOUT) {
+ pr_err("powerdomain: %s: waited too long to complete transition\n",
+ pwrdm->name);
+ return -EAGAIN;
+ }
+
+ pr_debug("powerdomain: completed transition in %d loops\n", c);
+
+ return 0;
+}
+
diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.h b/arch/arm/mach-omap2/prm2xxx_3xxx.h
index 8d09a1a..706b026 100644
--- a/arch/arm/mach-omap2/prm2xxx_3xxx.h
+++ b/arch/arm/mach-omap2/prm2xxx_3xxx.h
@@ -50,6 +50,7 @@
#ifndef __ASSEMBLER__
#include <linux/io.h>
+#include "powerdomain.h"
/* Power/reset management domain register get/set */
static inline u32 omap2_prm_read_mod_reg(s16 module, u16 idx)
@@ -103,6 +104,18 @@ extern int omap2_prm_is_hardreset_asserted(s16 prm_mod, u8 shift);
extern int omap2_prm_assert_hardreset(s16 prm_mod, u8 shift);
extern int omap2_prm_deassert_hardreset(s16 prm_mod, u8 rst_shift, u8 st_shift);
+extern int omap2_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst);
+extern int omap2_pwrdm_read_next_pwrst(struct powerdomain *pwrdm);
+extern int omap2_pwrdm_read_pwrst(struct powerdomain *pwrdm);
+extern int omap2_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
+ u8 pwrst);
+extern int omap2_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
+ u8 pwrst);
+extern int omap2_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank);
+extern int omap2_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank);
+extern int omap2_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst);
+extern int omap2_pwrdm_wait_transition(struct powerdomain *pwrdm);
+
#endif /* __ASSEMBLER */
/*
diff --git a/arch/arm/mach-omap2/prm33xx.c b/arch/arm/mach-omap2/prm33xx.c
index e7dbb6c..3417dd3 100644
--- a/arch/arm/mach-omap2/prm33xx.c
+++ b/arch/arm/mach-omap2/prm33xx.c
@@ -22,6 +22,7 @@
#include <plat/common.h>
#include "common.h"
+#include "powerdomain.h"
#include "prm33xx.h"
#include "prm-regbits-33xx.h"
@@ -133,3 +134,204 @@ int am33xx_prm_deassert_hardreset(u8 shift, s16 inst,
return (c == MAX_MODULE_HARDRESET_WAIT) ? -EBUSY : 0;
}
+
+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) {
+ pr_err("powerdomain: %s: waited too long 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/prm3xxx.c b/arch/arm/mach-omap2/prm3xxx.c
index 88f7d8d..b2c5fd9 100644
--- a/arch/arm/mach-omap2/prm3xxx.c
+++ b/arch/arm/mach-omap2/prm3xxx.c
@@ -22,8 +22,9 @@
#include <plat/prcm.h>
#include "vp.h"
-
+#include "powerdomain.h"
#include "prm3xxx.h"
+#include "prm2xxx_3xxx.h"
#include "cm2xxx_3xxx.h"
#include "prm-regbits-34xx.h"
@@ -215,6 +216,109 @@ static void __init omap3xxx_prm_enable_io_wakeup(void)
PM_WKEN);
}
+/* Powerdomain low-level functions */
+
+/* Applicable only for OMAP3. Not supported on OMAP2 */
+static int omap3_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+{
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP3430_PM_PREPWSTST,
+ OMAP3430_LASTPOWERSTATEENTERED_MASK);
+}
+
+static int omap3_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
+{
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP2_PM_PWSTST,
+ OMAP3430_LOGICSTATEST_MASK);
+}
+
+static int omap3_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
+{
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP2_PM_PWSTCTRL,
+ OMAP3430_LOGICSTATEST_MASK);
+}
+
+static int omap3_pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
+{
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP3430_PM_PREPWSTST,
+ OMAP3430_LASTLOGICSTATEENTERED_MASK);
+}
+
+static int omap3_get_mem_bank_lastmemst_mask(u8 bank)
+{
+ switch (bank) {
+ case 0:
+ return OMAP3430_LASTMEM1STATEENTERED_MASK;
+ case 1:
+ return OMAP3430_LASTMEM2STATEENTERED_MASK;
+ case 2:
+ return OMAP3430_LASTSHAREDL2CACHEFLATSTATEENTERED_MASK;
+ case 3:
+ return OMAP3430_LASTL2FLATMEMSTATEENTERED_MASK;
+ default:
+ WARN_ON(1); /* should never happen */
+ return -EEXIST;
+ }
+ return 0;
+}
+
+static int omap3_pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
+{
+ u32 m;
+
+ m = omap3_get_mem_bank_lastmemst_mask(bank);
+
+ return omap2_prm_read_mod_bits_shift(pwrdm->prcm_offs,
+ OMAP3430_PM_PREPWSTST, m);
+}
+
+static int omap3_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
+{
+ omap2_prm_write_mod_reg(0, pwrdm->prcm_offs, OMAP3430_PM_PREPWSTST);
+ return 0;
+}
+
+static int omap3_pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm)
+{
+ return omap2_prm_rmw_mod_reg_bits(0,
+ 1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT,
+ pwrdm->prcm_offs, OMAP2_PM_PWSTCTRL);
+}
+
+static int omap3_pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm)
+{
+ return omap2_prm_rmw_mod_reg_bits(1 << OMAP3430ES2_SAVEANDRESTORE_SHIFT,
+ 0, pwrdm->prcm_offs,
+ OMAP2_PM_PWSTCTRL);
+}
+
+struct pwrdm_ops omap3_pwrdm_operations = {
+ .pwrdm_set_next_pwrst = omap2_pwrdm_set_next_pwrst,
+ .pwrdm_read_next_pwrst = omap2_pwrdm_read_next_pwrst,
+ .pwrdm_read_pwrst = omap2_pwrdm_read_pwrst,
+ .pwrdm_read_prev_pwrst = omap3_pwrdm_read_prev_pwrst,
+ .pwrdm_set_logic_retst = omap2_pwrdm_set_logic_retst,
+ .pwrdm_read_logic_pwrst = omap3_pwrdm_read_logic_pwrst,
+ .pwrdm_read_logic_retst = omap3_pwrdm_read_logic_retst,
+ .pwrdm_read_prev_logic_pwrst = omap3_pwrdm_read_prev_logic_pwrst,
+ .pwrdm_set_mem_onst = omap2_pwrdm_set_mem_onst,
+ .pwrdm_set_mem_retst = omap2_pwrdm_set_mem_retst,
+ .pwrdm_read_mem_pwrst = omap2_pwrdm_read_mem_pwrst,
+ .pwrdm_read_mem_retst = omap2_pwrdm_read_mem_retst,
+ .pwrdm_read_prev_mem_pwrst = omap3_pwrdm_read_prev_mem_pwrst,
+ .pwrdm_clear_all_prev_pwrst = omap3_pwrdm_clear_all_prev_pwrst,
+ .pwrdm_enable_hdwr_sar = omap3_pwrdm_enable_hdwr_sar,
+ .pwrdm_disable_hdwr_sar = omap3_pwrdm_disable_hdwr_sar,
+ .pwrdm_wait_transition = omap2_pwrdm_wait_transition,
+};
+
+/*
+ *
+ */
+
static int __init omap3xxx_prm_init(void)
{
int ret;
diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c
index 06bb679..9231fe5 100644
--- a/arch/arm/mach-omap2/prm44xx.c
+++ b/arch/arm/mach-omap2/prm44xx.c
@@ -27,6 +27,7 @@
#include "prm-regbits-44xx.h"
#include "prcm44xx.h"
#include "prminst44xx.h"
+#include "powerdomain.h"
static const struct omap_prcm_irq omap4_prcm_irqs[] = {
OMAP_PRCM_IRQ("wkup", 0, 0),
@@ -291,6 +292,269 @@ static void __init omap44xx_prm_enable_io_wakeup(void)
OMAP4_PRM_IO_PMCTRL_OFFSET);
}
+/* Powerdomain low-level functions */
+
+static int omap4_pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
+{
+ omap4_prminst_rmw_inst_reg_bits(OMAP_POWERSTATE_MASK,
+ (pwrst << OMAP_POWERSTATE_SHIFT),
+ pwrdm->prcm_partition,
+ pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
+ return 0;
+}
+
+static int omap4_pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTCTRL);
+ v &= OMAP_POWERSTATE_MASK;
+ v >>= OMAP_POWERSTATE_SHIFT;
+
+ return v;
+}
+
+static int omap4_pwrdm_read_pwrst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTST);
+ v &= OMAP_POWERSTATEST_MASK;
+ v >>= OMAP_POWERSTATEST_SHIFT;
+
+ return v;
+}
+
+static int omap4_pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTST);
+ v &= OMAP4430_LASTPOWERSTATEENTERED_MASK;
+ v >>= OMAP4430_LASTPOWERSTATEENTERED_SHIFT;
+
+ return v;
+}
+
+static int omap4_pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
+{
+ omap4_prminst_rmw_inst_reg_bits(OMAP4430_LOWPOWERSTATECHANGE_MASK,
+ (1 << OMAP4430_LOWPOWERSTATECHANGE_SHIFT),
+ pwrdm->prcm_partition,
+ pwrdm->prcm_offs, OMAP4_PM_PWSTCTRL);
+ return 0;
+}
+
+static int omap4_pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
+{
+ omap4_prminst_rmw_inst_reg_bits(OMAP4430_LASTPOWERSTATEENTERED_MASK,
+ OMAP4430_LASTPOWERSTATEENTERED_MASK,
+ pwrdm->prcm_partition,
+ pwrdm->prcm_offs, OMAP4_PM_PWSTST);
+ return 0;
+}
+
+static int omap4_pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
+{
+ u32 v;
+
+ v = pwrst << __ffs(OMAP4430_LOGICRETSTATE_MASK);
+ omap4_prminst_rmw_inst_reg_bits(OMAP4430_LOGICRETSTATE_MASK, v,
+ pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTCTRL);
+
+ return 0;
+}
+
+static int omap4_pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank,
+ u8 pwrst)
+{
+ u32 m;
+
+ m = omap2_pwrdm_get_mem_bank_onstate_mask(bank);
+
+ omap4_prminst_rmw_inst_reg_bits(m, (pwrst << __ffs(m)),
+ pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTCTRL);
+
+ return 0;
+}
+
+static int omap4_pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank,
+ u8 pwrst)
+{
+ u32 m;
+
+ m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
+
+ omap4_prminst_rmw_inst_reg_bits(m, (pwrst << __ffs(m)),
+ pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTCTRL);
+
+ return 0;
+}
+
+static int omap4_pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTST);
+ v &= OMAP4430_LOGICSTATEST_MASK;
+ v >>= OMAP4430_LOGICSTATEST_SHIFT;
+
+ return v;
+}
+
+static int omap4_pwrdm_read_logic_retst(struct powerdomain *pwrdm)
+{
+ u32 v;
+
+ v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTCTRL);
+ v &= OMAP4430_LOGICRETSTATE_MASK;
+ v >>= OMAP4430_LOGICRETSTATE_SHIFT;
+
+ return v;
+}
+
+/**
+ * omap4_pwrdm_read_prev_logic_pwrst - read the previous logic powerstate
+ * @pwrdm: struct powerdomain * to read the state for
+ *
+ * Reads the previous logic powerstate for a powerdomain. This
+ * function must determine the previous logic powerstate by first
+ * checking the previous powerstate for the domain. If that was OFF,
+ * then logic has been lost. If previous state was RETENTION, the
+ * function reads the setting for the next retention logic state to
+ * see the actual value. In every other case, the logic is
+ * retained. Returns either PWRDM_POWER_OFF or PWRDM_POWER_RET
+ * depending whether the logic was retained or not.
+ */
+static int omap4_pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
+{
+ int state;
+
+ state = omap4_pwrdm_read_prev_pwrst(pwrdm);
+
+ if (state == PWRDM_POWER_OFF)
+ return PWRDM_POWER_OFF;
+
+ if (state != PWRDM_POWER_RET)
+ return PWRDM_POWER_RET;
+
+ return omap4_pwrdm_read_logic_retst(pwrdm);
+}
+
+static int omap4_pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
+{
+ u32 m, v;
+
+ m = omap2_pwrdm_get_mem_bank_stst_mask(bank);
+
+ v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTST);
+ v &= m;
+ v >>= __ffs(m);
+
+ return v;
+}
+
+static int omap4_pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
+{
+ u32 m, v;
+
+ m = omap2_pwrdm_get_mem_bank_retst_mask(bank);
+
+ v = omap4_prminst_read_inst_reg(pwrdm->prcm_partition, pwrdm->prcm_offs,
+ OMAP4_PM_PWSTCTRL);
+ v &= m;
+ v >>= __ffs(m);
+
+ return v;
+}
+
+/**
+ * omap4_pwrdm_read_prev_mem_pwrst - reads the previous memory powerstate
+ * @pwrdm: struct powerdomain * to read mem powerstate for
+ * @bank: memory bank index
+ *
+ * Reads the previous memory powerstate for a powerdomain. This
+ * function must determine the previous memory powerstate by first
+ * checking the previous powerstate for the domain. If that was OFF,
+ * then logic has been lost. If previous state was RETENTION, the
+ * function reads the setting for the next memory retention state to
+ * see the actual value. In every other case, the logic is
+ * retained. Returns either PWRDM_POWER_OFF or PWRDM_POWER_RET
+ * depending whether logic was retained or not.
+ */
+static int omap4_pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
+{
+ int state;
+
+ state = omap4_pwrdm_read_prev_pwrst(pwrdm);
+
+ if (state == PWRDM_POWER_OFF)
+ return PWRDM_POWER_OFF;
+
+ if (state != PWRDM_POWER_RET)
+ return PWRDM_POWER_RET;
+
+ return omap4_pwrdm_read_mem_retst(pwrdm, bank);
+}
+
+static int omap4_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 ((omap4_prminst_read_inst_reg(pwrdm->prcm_partition,
+ pwrdm->prcm_offs,
+ OMAP4_PM_PWSTST) &
+ OMAP_INTRANSITION_MASK) &&
+ (c++ < PWRDM_TRANSITION_BAILOUT))
+ udelay(1);
+
+ if (c > PWRDM_TRANSITION_BAILOUT) {
+ pr_err("powerdomain: %s: waited too long to complete transition\n",
+ pwrdm->name);
+ return -EAGAIN;
+ }
+
+ pr_debug("powerdomain: completed transition in %d loops\n", c);
+
+ return 0;
+}
+
+struct pwrdm_ops omap4_pwrdm_operations = {
+ .pwrdm_set_next_pwrst = omap4_pwrdm_set_next_pwrst,
+ .pwrdm_read_next_pwrst = omap4_pwrdm_read_next_pwrst,
+ .pwrdm_read_pwrst = omap4_pwrdm_read_pwrst,
+ .pwrdm_read_prev_pwrst = omap4_pwrdm_read_prev_pwrst,
+ .pwrdm_set_lowpwrstchange = omap4_pwrdm_set_lowpwrstchange,
+ .pwrdm_clear_all_prev_pwrst = omap4_pwrdm_clear_all_prev_pwrst,
+ .pwrdm_set_logic_retst = omap4_pwrdm_set_logic_retst,
+ .pwrdm_read_logic_pwrst = omap4_pwrdm_read_logic_pwrst,
+ .pwrdm_read_prev_logic_pwrst = omap4_pwrdm_read_prev_logic_pwrst,
+ .pwrdm_read_logic_retst = omap4_pwrdm_read_logic_retst,
+ .pwrdm_read_mem_pwrst = omap4_pwrdm_read_mem_pwrst,
+ .pwrdm_read_mem_retst = omap4_pwrdm_read_mem_retst,
+ .pwrdm_read_prev_mem_pwrst = omap4_pwrdm_read_prev_mem_pwrst,
+ .pwrdm_set_mem_onst = omap4_pwrdm_set_mem_onst,
+ .pwrdm_set_mem_retst = omap4_pwrdm_set_mem_retst,
+ .pwrdm_wait_transition = omap4_pwrdm_wait_transition,
+};
+
+
static int __init omap4xxx_prm_init(void)
{
if (!cpu_is_omap44xx())
--
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