summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-omap2/pm34xx.c
diff options
context:
space:
mode:
authorArnd Bergmann <arnd@arndb.de>2012-07-03 22:01:29 +0200
committerArnd Bergmann <arnd@arndb.de>2012-07-03 22:02:17 +0200
commit6b21a9ce0402e0c5fd2adfa3d41328fdd8f55a9a (patch)
tree05545030ed958b1568f701b0134ec54e925654b5 /arch/arm/mach-omap2/pm34xx.c
parentMerge tag 'omap-devel-driver-for-v3.6' of git://git.kernel.org/pub/scm/linux/... (diff)
parentARM: OMAP2+: PM: fix IRQ_NOAUTOEN removal by mis-merge (diff)
downloadlinux-6b21a9ce0402e0c5fd2adfa3d41328fdd8f55a9a.tar.xz
linux-6b21a9ce0402e0c5fd2adfa3d41328fdd8f55a9a.zip
Merge tag 'omap-devel-pm-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/pm
From: Tony Lindgren <tony@atomide.com>: Here are some omap PM changes that reimplement omap PRCM I/O chain code for wake-ups, and improve idle latencies for cpuidle. * tag 'omap-devel-pm-for-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap: ARM: OMAP2+: PM: fix IRQ_NOAUTOEN removal by mis-merge ARM: OMAP3: PM: cpuidle: optimize the clkdm idle latency in C1 state ARM: OMAP3: PM: cpuidle: optimize the PER latency in C1 state ARM: OMAP3: PM: cpuidle: default to C1 in next_valid_state ARM: OMAP3: PM: cleanup cam_pwrdm leftovers ARM: OMAP3: PM: call pre/post transition per powerdomain ARM: OMAP2+: powerdomain: allow pre/post transtion to be per pwrdm ARM: OMAP3: PM: Remove IO Daisychain control from cpuidle ARM: OMAP3PLUS: hwmod: reconfigure IO Daisychain during hwmod mux ARM: OMAP3+: PRM: Enable IO wake up ARM: OMAP4: PRM: Add IO Daisychain support ARM: OMAP3: PM: Move IO Daisychain function to omap3 prm file ARM: OMAP3: PM: correct enable/disable of daisy io chain ARM: OMAP2+: PRM: fix compile for OMAP4-only build Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/arm/mach-omap2/pm34xx.c')
-rw-r--r--arch/arm/mach-omap2/pm34xx.c63
1 files changed, 13 insertions, 50 deletions
diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index 3a595e899724..e63fdd02c6f5 100644
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -70,34 +70,6 @@ void (*omap3_do_wfi_sram)(void);
static struct powerdomain *mpu_pwrdm, *neon_pwrdm;
static struct powerdomain *core_pwrdm, *per_pwrdm;
-static struct powerdomain *cam_pwrdm;
-
-static void omap3_enable_io_chain(void)
-{
- int timeout = 0;
-
- omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD,
- PM_WKEN);
- /* Do a readback to assure write has been done */
- omap2_prm_read_mod_reg(WKUP_MOD, PM_WKEN);
-
- while (!(omap2_prm_read_mod_reg(WKUP_MOD, PM_WKEN) &
- OMAP3430_ST_IO_CHAIN_MASK)) {
- timeout++;
- if (timeout > 1000) {
- pr_err("Wake up daisy chain activation failed.\n");
- return;
- }
- omap2_prm_set_mod_reg_bits(OMAP3430_ST_IO_CHAIN_MASK,
- WKUP_MOD, PM_WKEN);
- }
-}
-
-static void omap3_disable_io_chain(void)
-{
- omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_CHAIN_MASK, WKUP_MOD,
- PM_WKEN);
-}
static void omap3_core_save_context(void)
{
@@ -299,24 +271,22 @@ 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)) {
- omap2_prm_set_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD, PM_WKEN);
- if (omap3_has_io_chain_ctrl())
- omap3_enable_io_chain();
- }
- pwrdm_pre_transition();
+ if (mpu_next_state < PWRDM_POWER_ON) {
+ pwrdm_pre_transition(mpu_pwrdm);
+ pwrdm_pre_transition(neon_pwrdm);
+ }
/* PER */
if (per_next_state < PWRDM_POWER_ON) {
+ pwrdm_pre_transition(per_pwrdm);
per_going_off = (per_next_state == PWRDM_POWER_OFF) ? 1 : 0;
omap2_gpio_prepare_for_idle(per_going_off);
}
/* CORE */
if (core_next_state < PWRDM_POWER_ON) {
+ pwrdm_pre_transition(core_pwrdm);
if (core_next_state == PWRDM_POWER_OFF) {
omap3_core_save_context();
omap3_cm_save_context();
@@ -369,26 +339,20 @@ void omap_sram_idle(void)
omap2_prm_clear_mod_reg_bits(OMAP3430_AUTO_OFF_MASK,
OMAP3430_GR_MOD,
OMAP3_PRM_VOLTCTRL_OFFSET);
+ pwrdm_post_transition(core_pwrdm);
}
omap3_intc_resume_idle();
- pwrdm_post_transition();
-
/* PER */
- if (per_next_state < PWRDM_POWER_ON)
+ if (per_next_state < PWRDM_POWER_ON) {
omap2_gpio_resume_after_idle();
-
- /* Disable IO-PAD and IO-CHAIN wakeup */
- if (omap3_has_io_wakeup() &&
- (per_next_state < PWRDM_POWER_ON ||
- core_next_state < PWRDM_POWER_ON)) {
- omap2_prm_clear_mod_reg_bits(OMAP3430_EN_IO_MASK, WKUP_MOD,
- PM_WKEN);
- if (omap3_has_io_chain_ctrl())
- omap3_disable_io_chain();
+ pwrdm_post_transition(per_pwrdm);
}
- clkdm_allow_idle(mpu_pwrdm->pwrdm_clkdms[0]);
+ if (mpu_next_state < PWRDM_POWER_ON) {
+ pwrdm_post_transition(mpu_pwrdm);
+ pwrdm_post_transition(neon_pwrdm);
+ }
}
static void omap3_pm_idle(void)
@@ -749,7 +713,6 @@ int __init omap3_pm_init(void)
neon_pwrdm = pwrdm_lookup("neon_pwrdm");
per_pwrdm = pwrdm_lookup("per_pwrdm");
core_pwrdm = pwrdm_lookup("core_pwrdm");
- cam_pwrdm = pwrdm_lookup("cam_pwrdm");
neon_clkdm = clkdm_lookup("neon_clkdm");
mpu_clkdm = clkdm_lookup("mpu_clkdm");