OMAP4 powerdomain: Support LOWPOWERSTATECHANGE for powerdomains

Some powerdomains in OMAP4 support a direct transition from one sleep
state to another deeper sleep state without having to wakeup the
powerdomain. This patch adds an api in the powerdomain framework to
set the LOWPOWERSTATECHANGE bit in PWRSTCTRL register.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/powerdomains44xx.h b/arch/arm/mach-omap2/powerdomains44xx.h
index ad5a2655ad44..c7219513472a 100644
--- a/arch/arm/mach-omap2/powerdomains44xx.h
+++ b/arch/arm/mach-omap2/powerdomains44xx.h
@@ -54,6 +54,7 @@ static struct powerdomain core_44xx_pwrdm = {
                 [3] = PWRDM_POWER_ON,   /* ducati_l2ram */
                 [4] = PWRDM_POWER_ON,   /* ducati_unicache */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /* gfx_44xx_pwrdm: 3D accelerator power domain */
@@ -69,6 +70,7 @@ static struct powerdomain gfx_44xx_pwrdm = {
         .pwrsts_mem_on  = {
                 [0] = PWRDM_POWER_ON,   /* gfx_mem */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /* abe_44xx_pwrdm: Audio back end power domain */
@@ -87,6 +89,7 @@ static struct powerdomain abe_44xx_pwrdm = {
                 [0] = PWRDM_POWER_ON,   /* aessmem */
                 [1] = PWRDM_POWER_ON,   /* periphmem */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /* dss_44xx_pwrdm: Display subsystem power domain */
@@ -103,6 +106,7 @@ static struct powerdomain dss_44xx_pwrdm = {
         .pwrsts_mem_on  = {
                 [0] = PWRDM_POWER_ON,   /* dss_mem */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /* tesla_44xx_pwrdm: Tesla processor power domain */
@@ -123,6 +127,7 @@ static struct powerdomain tesla_44xx_pwrdm = {
                 [1] = PWRDM_POWER_ON,   /* tesla_l1 */
                 [2] = PWRDM_POWER_ON,   /* tesla_l2 */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /* wkup_44xx_pwrdm: Wake-up power domain */
@@ -227,6 +232,7 @@ static struct powerdomain ivahd_44xx_pwrdm = {
                 [2] = PWRDM_POWER_ON,   /* tcm1_mem */
                 [3] = PWRDM_POWER_ON,   /* tcm2_mem */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /* cam_44xx_pwrdm: Camera subsystem power domain */
@@ -242,6 +248,7 @@ static struct powerdomain cam_44xx_pwrdm = {
         .pwrsts_mem_on  = {
                 [0] = PWRDM_POWER_ON,   /* cam_mem */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /* l3init_44xx_pwrdm: L3 initators pheripherals power domain  */
@@ -258,6 +265,7 @@ static struct powerdomain l3init_44xx_pwrdm = {
         .pwrsts_mem_on  = {
                 [0] = PWRDM_POWER_ON,   /* l3init_bank1 */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /* l4per_44xx_pwrdm: Target peripherals power domain */
@@ -276,6 +284,7 @@ static struct powerdomain l4per_44xx_pwrdm = {
                 [0] = PWRDM_POWER_ON,   /* nonretained_bank */
                 [1] = PWRDM_POWER_ON,   /* retained_bank */
         },
+        .flags          = PWRDM_HAS_LOWPOWERSTATECHANGE,
 };
 
 /*