[PATCH 1/6] omap4: powerdomain: Add supported INACTIVE power state

[Santosh Shilimkar]

On OMAP4, one can explicitly program INACTIVE as the power state of
the logic area inside the power domain. Techincally PD state programmed
to ON and if all the clock domains within the PD are idled, is equivalent
tp PD programmed to INACTIVE and all the clock domains within the PD are
idled. There won't be any power difference in above two.

Since the CPUIDLE C-states explicitly make use of INACTIVE as a PD
targeted state and also there is some additional latancy involved
with PD INACTIVE vs PD ON, it's better to support it as an explcit
PD state.

This patch adds the support to allow explicit PD INACTIVE
programming if supported.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
Cc: Paul Walmsley <paul at pwsan.com>
---
 arch/arm/mach-omap2/powerdomain.h           |   12 ++++++++++++
 arch/arm/mach-omap2/powerdomains44xx_data.c |   26 +++++++++++++-------------
 2 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/arch/arm/mach-omap2/powerdomain.h b/arch/arm/mach-omap2/powerdomain.h
index c66431e..0e15ca7 100644
--- a/arch/arm/mach-omap2/powerdomain.h
+++ b/arch/arm/mach-omap2/powerdomain.h
@@ -46,6 +46,18 @@
 
 #define PWRSTS_OFF_RET_ON	(PWRSTS_OFF_RET | (1 << PWRDM_POWER_ON))
 
+#define PWRSTS_RET_INA_ON	((1 << PWRDM_POWER_RET) | \
+				 (1 << PWRDM_POWER_INACTIVE)  | \
+				 (1 << PWRDM_POWER_ON))
+
+#define PWRSTS_OFF_INA_ON	((1 << PWRDM_POWER_OFF) | \
+				 (1 << PWRDM_POWER_INACTIVE)  | \
+				 (1 << PWRDM_POWER_ON))
+
+#define PWRSTS_OFF_RET_INA_ON	((1 << PWRDM_POWER_OFF) | \
+				 (1 << PWRDM_POWER_RET) | \
+				 (1 << PWRDM_POWER_INACTIVE)  | \
+				 (1 << PWRDM_POWER_ON))
 
 /* Powerdomain flags */
 #define PWRDM_HAS_HDWR_SAR	(1 << 0) /* hardware save-and-restore support */
diff --git a/arch/arm/mach-omap2/powerdomains44xx_data.c b/arch/arm/mach-omap2/powerdomains44xx_data.c
index 26d7641..96cde98 100644
--- a/arch/arm/mach-omap2/powerdomains44xx_data.c
+++ b/arch/arm/mach-omap2/powerdomains44xx_data.c
@@ -36,7 +36,7 @@ static struct powerdomain core_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_CORE_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_RET_ON,
+	.pwrsts		  = PWRSTS_RET_INA_ON,
 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.banks		  = 5,
 	.pwrsts_mem_ret	= {
@@ -62,7 +62,7 @@ static struct powerdomain gfx_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_GFX_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_ON,
+	.pwrsts		  = PWRSTS_OFF_INA_ON,
 	.banks		  = 1,
 	.pwrsts_mem_ret	= {
 		[0] = PWRDM_POWER_OFF,	/* gfx_mem */
@@ -79,7 +79,7 @@ static struct powerdomain abe_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_ABE_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts		  = PWRSTS_OFF_RET_INA_ON,
 	.pwrsts_logic_ret = PWRDM_POWER_OFF,
 	.banks		  = 2,
 	.pwrsts_mem_ret	= {
@@ -99,7 +99,7 @@ static struct powerdomain dss_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_DSS_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts		  = PWRSTS_OFF_RET_INA_ON,
 	.pwrsts_logic_ret = PWRSTS_OFF,
 	.banks		  = 1,
 	.pwrsts_mem_ret	= {
@@ -117,7 +117,7 @@ static struct powerdomain tesla_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_TESLA_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts		  = PWRSTS_OFF_RET_INA_ON,
 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.banks		  = 3,
 	.pwrsts_mem_ret	= {
@@ -155,7 +155,7 @@ static struct powerdomain cpu0_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRCM_MPU_CPU0_INST,
 	.prcm_partition	  = OMAP4430_PRCM_MPU_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts		  = PWRSTS_OFF_RET_INA_ON,
 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.banks		  = 1,
 	.pwrsts_mem_ret	= {
@@ -172,7 +172,7 @@ static struct powerdomain cpu1_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRCM_MPU_CPU1_INST,
 	.prcm_partition	  = OMAP4430_PRCM_MPU_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts		  = PWRSTS_OFF_RET_INA_ON,
 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.banks		  = 1,
 	.pwrsts_mem_ret	= {
@@ -205,7 +205,7 @@ static struct powerdomain mpu_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_MPU_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts		  = PWRSTS_OFF_RET_INA_ON,
 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.banks		  = 3,
 	.pwrsts_mem_ret	= {
@@ -226,7 +226,7 @@ static struct powerdomain ivahd_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_IVAHD_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_RET_ON,
+	.pwrsts		  = PWRSTS_OFF_RET_INA_ON,
 	.pwrsts_logic_ret = PWRDM_POWER_OFF,
 	.banks		  = 4,
 	.pwrsts_mem_ret	= {
@@ -250,7 +250,7 @@ static struct powerdomain cam_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_CAM_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_ON,
+	.pwrsts		  = PWRSTS_OFF_INA_ON,
 	.banks		  = 1,
 	.pwrsts_mem_ret	= {
 		[0] = PWRDM_POWER_OFF,	/* cam_mem */
@@ -267,7 +267,7 @@ static struct powerdomain l3init_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_L3INIT_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_RET_ON,
+	.pwrsts		  = PWRSTS_OFF_RET_INA_ON,
 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.banks		  = 1,
 	.pwrsts_mem_ret	= {
@@ -285,7 +285,7 @@ static struct powerdomain l4per_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_L4PER_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_RET_ON,
+	.pwrsts		  = PWRSTS_RET_INA_ON,
 	.pwrsts_logic_ret = PWRSTS_OFF_RET,
 	.banks		  = 2,
 	.pwrsts_mem_ret	= {
@@ -317,7 +317,7 @@ static struct powerdomain cefuse_44xx_pwrdm = {
 	.prcm_offs	  = OMAP4430_PRM_CEFUSE_INST,
 	.prcm_partition	  = OMAP4430_PRM_PARTITION,
 	.omap_chip	  = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
-	.pwrsts		  = PWRSTS_OFF_ON,
+	.pwrsts		  = PWRSTS_OFF_INA_ON,
 };
 
 /*
-- 
1.6.0.4