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authorDave Gerlach <d-gerlach@ti.com>2019-12-12 21:07:53 -0600
committerTony Lindgren <tony@atomide.com>2020-02-27 09:27:27 -0800
commit65880ab160838e0764138894ef4450abdbed4af5 (patch)
treeea35636572f1026b2107266a1ffa66fbbf20db24 /arch/arm/mach-omap2
parent06ee7a950b6a342cd79590e7243bdda850141967 (diff)
downloadlinux-65880ab160838e0764138894ef4450abdbed4af5.tar.bz2
ARM: OMAP2+: pm33xx-core: Extend platform_data ops for cpuidle
In order for am335x and am437x to properly enter deeper c-states in cpuidle they must always call into the sleep33/43xx suspend code and also sometimes invoke the wkup_m3_ipc driver. These are both controlled by the pm33xx module so we must provide a method for the platform code to call back into the module when it is available as the core cpuidle ops that are invoked by the cpuidle-arm driver must remain as built in. Extend the init platform op to take an idle function as an argument so that we can use this to call into the pm33xx module for c-states that need it. Also add a deinit op so we can unregister this idle function from the PM core when the pm33xx module gets unloaded. Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Dave Gerlach <d-gerlach@ti.com> Acked-by: Santosh Shilimkar <ssantosh@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2')
-rw-r--r--arch/arm/mach-omap2/pm33xx-core.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/arch/arm/mach-omap2/pm33xx-core.c b/arch/arm/mach-omap2/pm33xx-core.c
index b36654186c79..5455fc98c60e 100644
--- a/arch/arm/mach-omap2/pm33xx-core.c
+++ b/arch/arm/mach-omap2/pm33xx-core.c
@@ -79,7 +79,7 @@ static int am43xx_check_off_mode_enable(void)
return 0;
}
-static int amx3_common_init(void)
+static int amx3_common_init(int (*idle)(u32 wfi_flags))
{
gfx_pwrdm = pwrdm_lookup("gfx_pwrdm");
per_pwrdm = pwrdm_lookup("per_pwrdm");
@@ -99,10 +99,12 @@ static int amx3_common_init(void)
else
omap_set_pwrdm_state(cefuse_pwrdm, PWRDM_POWER_OFF);
+ idle_fn = idle;
+
return 0;
}
-static int am33xx_suspend_init(void)
+static int am33xx_suspend_init(int (*idle)(u32 wfi_flags))
{
int ret;
@@ -113,12 +115,12 @@ static int am33xx_suspend_init(void)
return -ENODEV;
}
- ret = amx3_common_init();
+ ret = amx3_common_init(idle);
return ret;
}
-static int am43xx_suspend_init(void)
+static int am43xx_suspend_init(int (*idle)(u32 wfi_flags))
{
int ret = 0;
@@ -128,11 +130,17 @@ static int am43xx_suspend_init(void)
return ret;
}
- ret = amx3_common_init();
+ ret = amx3_common_init(idle);
return ret;
}
+static int amx3_suspend_deinit(void)
+{
+ idle_fn = NULL;
+ return 0;
+}
+
static void amx3_pre_suspend_common(void)
{
omap_set_pwrdm_state(gfx_pwrdm, PWRDM_POWER_OFF);
@@ -301,6 +309,7 @@ static void am43xx_prepare_rtc_resume(void)
static struct am33xx_pm_platform_data am33xx_ops = {
.init = am33xx_suspend_init,
+ .deinit = amx3_suspend_deinit,
.soc_suspend = am33xx_suspend,
.cpu_suspend = am33xx_cpu_suspend,
.begin_suspend = amx3_begin_suspend,
@@ -316,6 +325,7 @@ static struct am33xx_pm_platform_data am33xx_ops = {
static struct am33xx_pm_platform_data am43xx_ops = {
.init = am43xx_suspend_init,
+ .deinit = amx3_suspend_deinit,
.soc_suspend = am43xx_suspend,
.cpu_suspend = am43xx_cpu_suspend,
.begin_suspend = amx3_begin_suspend,