[3/7] OMAP4: GPIO: Save/restore context
diff mbox

Message ID 1303139217-10285-4-git-send-email-charu@ti.com
State Changes Requested, archived
Delegated to: Tony Lindgren
Headers show

Commit Message

charu@ti.com April 18, 2011, 3:06 p.m. UTC
From: Charulatha V <charu@ti.com>

Modify the omap_gpio_save/restore_context to support OMAP4
architecture so that the OMAP GPIO driver need not be modified
when OMAP4 off mode support is available.

Signed-off-by: Charulatha V <charu@ti.com>
---
 arch/arm/plat-omap/gpio.c |  131 +++++++++++++++++++++++++++++---------------
 1 files changed, 86 insertions(+), 45 deletions(-)

Comments

Kevin Hilman April 21, 2011, 12:26 a.m. UTC | #1
"Varadarajan, Charulatha" <charu@ti.com> writes:

> From: Charulatha V <charu@ti.com>
>
> Modify the omap_gpio_save/restore_context to support OMAP4
> architecture so that the OMAP GPIO driver need not be modified
> when OMAP4 off mode support is available.
>
> Signed-off-by: Charulatha V <charu@ti.com>
> ---
>  arch/arm/plat-omap/gpio.c |  131 +++++++++++++++++++++++++++++---------------
>  1 files changed, 86 insertions(+), 45 deletions(-)
>
> diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
> index 74085b5..e68da08 100644
> --- a/arch/arm/plat-omap/gpio.c
> +++ b/arch/arm/plat-omap/gpio.c
> @@ -2022,43 +2022,62 @@ void omap2_gpio_resume_after_idle(void)
>  
>  #endif
>  
> -#ifdef CONFIG_ARCH_OMAP3
> -/* save the registers of bank 2-6 */
>  void omap_gpio_save_context(void)
>  {
>  	int i;
>  
> -	/* saving banks from 2-6 only since GPIO1 is in WKUP */

Minor: these comment removals belong in the previous patch.

Kevin
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Patch
diff mbox

diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 74085b5..e68da08 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -2022,43 +2022,62 @@  void omap2_gpio_resume_after_idle(void)
 
 #endif
 
-#ifdef CONFIG_ARCH_OMAP3
-/* save the registers of bank 2-6 */
 void omap_gpio_save_context(void)
 {
 	int i;
 
-	/* saving banks from 2-6 only since GPIO1 is in WKUP */
 	for (i = 0; i < gpio_bank_count; i++) {
 		struct gpio_bank *bank = &gpio_bank[i];
 
 		if (!bank->looses_context)
 			continue;
 
-		bank->context.irqenable1 =
-			__raw_readl(bank->base + OMAP24XX_GPIO_IRQENABLE1);
-		bank->context.irqenable2 =
-			__raw_readl(bank->base + OMAP24XX_GPIO_IRQENABLE2);
-		bank->context.wake_en =
-			__raw_readl(bank->base + OMAP24XX_GPIO_WAKE_EN);
-		bank->context.ctrl =
-			__raw_readl(bank->base + OMAP24XX_GPIO_CTRL);
-		bank->context.oe =
-			__raw_readl(bank->base + OMAP24XX_GPIO_OE);
-		bank->context.leveldetect0 =
-			__raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0);
-		bank->context.leveldetect1 =
-			__raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1);
-		bank->context.risingdetect =
-			__raw_readl(bank->base + OMAP24XX_GPIO_RISINGDETECT);
-		bank->context.fallingdetect =
-			__raw_readl(bank->base + OMAP24XX_GPIO_FALLINGDETECT);
-		bank->context.dataout =
-			__raw_readl(bank->base + OMAP24XX_GPIO_DATAOUT);
+		if (bank->method == METHOD_GPIO_24XX) {
+			bank->context.irqenable1 = __raw_readl(
+					bank->base + OMAP24XX_GPIO_IRQENABLE1);
+			bank->context.irqenable2 = __raw_readl(
+					bank->base + OMAP24XX_GPIO_IRQENABLE2);
+			bank->context.wake_en = __raw_readl(
+					bank->base + OMAP24XX_GPIO_WAKE_EN);
+			bank->context.ctrl = __raw_readl(
+					bank->base + OMAP24XX_GPIO_CTRL);
+			bank->context.oe = __raw_readl(
+					bank->base + OMAP24XX_GPIO_OE);
+			bank->context.leveldetect0 = __raw_readl(bank->base +
+					OMAP24XX_GPIO_LEVELDETECT0);
+			bank->context.leveldetect1 = __raw_readl(bank->base +
+					OMAP24XX_GPIO_LEVELDETECT1);
+			bank->context.risingdetect = __raw_readl(bank->base +
+					OMAP24XX_GPIO_RISINGDETECT);
+			bank->context.fallingdetect = __raw_readl(bank->base +
+					OMAP24XX_GPIO_FALLINGDETECT);
+			bank->context.dataout = __raw_readl(
+					bank->base + OMAP24XX_GPIO_DATAOUT);
+		} else if (bank->method == METHOD_GPIO_44XX) {
+			bank->context.irqenable1 = __raw_readl(
+					bank->base + OMAP4_GPIO_IRQSTATUSSET0);
+			bank->context.irqenable2 = __raw_readl(
+					bank->base + OMAP4_GPIO_IRQSTATUSSET1);
+			bank->context.wake_en = __raw_readl(
+					bank->base + OMAP4_GPIO_IRQWAKEN0);
+			bank->context.ctrl = __raw_readl(
+					bank->base + OMAP4_GPIO_CTRL);
+			bank->context.oe = __raw_readl(
+					bank->base + OMAP24XX_GPIO_OE);
+			bank->context.leveldetect0 = __raw_readl(bank->base +
+					OMAP4_GPIO_LEVELDETECT0);
+			bank->context.leveldetect1 = __raw_readl(bank->base +
+					OMAP4_GPIO_LEVELDETECT1);
+			bank->context.risingdetect = __raw_readl(bank->base +
+					OMAP4_GPIO_RISINGDETECT);
+			bank->context.fallingdetect = __raw_readl(bank->base +
+					OMAP4_GPIO_FALLINGDETECT);
+			bank->context.dataout = __raw_readl(
+					bank->base + OMAP4_GPIO_DATAOUT);
+		}
 	}
 }
 
-/* restore the required registers of bank 2-6 */
 void omap_gpio_restore_context(void)
 {
 	int i;
@@ -2069,29 +2088,51 @@  void omap_gpio_restore_context(void)
 		if (!bank->looses_context)
 			continue;
 
-		__raw_writel(bank->context.irqenable1,
-				bank->base + OMAP24XX_GPIO_IRQENABLE1);
-		__raw_writel(bank->context.irqenable2,
-				bank->base + OMAP24XX_GPIO_IRQENABLE2);
-		__raw_writel(bank->context.wake_en,
-				bank->base + OMAP24XX_GPIO_WAKE_EN);
-		__raw_writel(bank->context.ctrl,
-				bank->base + OMAP24XX_GPIO_CTRL);
-		__raw_writel(bank->context.oe,
-				bank->base + OMAP24XX_GPIO_OE);
-		__raw_writel(bank->context.leveldetect0,
-				bank->base + OMAP24XX_GPIO_LEVELDETECT0);
-		__raw_writel(bank->context.leveldetect1,
-				bank->base + OMAP24XX_GPIO_LEVELDETECT1);
-		__raw_writel(bank->context.risingdetect,
-				bank->base + OMAP24XX_GPIO_RISINGDETECT);
-		__raw_writel(bank->context.fallingdetect,
-				bank->base + OMAP24XX_GPIO_FALLINGDETECT);
-		__raw_writel(bank->context.dataout,
-				bank->base + OMAP24XX_GPIO_DATAOUT);
+		if (bank->method == METHOD_GPIO_24XX) {
+			__raw_writel(bank->context.irqenable1, bank->base +
+						OMAP24XX_GPIO_IRQENABLE1);
+			__raw_writel(bank->context.irqenable2, bank->base +
+						OMAP24XX_GPIO_IRQENABLE2);
+			__raw_writel(bank->context.wake_en, bank->base +
+						OMAP24XX_GPIO_WAKE_EN);
+			__raw_writel(bank->context.ctrl, bank->base +
+						OMAP24XX_GPIO_CTRL);
+			__raw_writel(bank->context.oe, bank->base +
+						OMAP24XX_GPIO_OE);
+			__raw_writel(bank->context.leveldetect0, bank->base +
+						OMAP24XX_GPIO_LEVELDETECT0);
+			__raw_writel(bank->context.leveldetect1, bank->base +
+						OMAP24XX_GPIO_LEVELDETECT1);
+			__raw_writel(bank->context.risingdetect, bank->base +
+						OMAP24XX_GPIO_RISINGDETECT);
+			__raw_writel(bank->context.fallingdetect, bank->base +
+						OMAP24XX_GPIO_FALLINGDETECT);
+			__raw_writel(bank->context.dataout, bank->base +
+						OMAP24XX_GPIO_DATAOUT);
+		} else if (bank->method == METHOD_GPIO_44XX) {
+			__raw_writel(bank->context.irqenable1, bank->base +
+						OMAP4_GPIO_IRQSTATUSSET0);
+			__raw_writel(bank->context.irqenable2, bank->base +
+						OMAP4_GPIO_IRQSTATUSSET1);
+			__raw_writel(bank->context.wake_en, bank->base +
+						OMAP4_GPIO_IRQWAKEN0);
+			__raw_writel(bank->context.ctrl, bank->base +
+						OMAP4_GPIO_CTRL);
+			__raw_writel(bank->context.oe, bank->base +
+						OMAP24XX_GPIO_OE);
+			__raw_writel(bank->context.leveldetect0, bank->base +
+						OMAP4_GPIO_LEVELDETECT0);
+			__raw_writel(bank->context.leveldetect1, bank->base +
+						OMAP4_GPIO_LEVELDETECT1);
+			__raw_writel(bank->context.risingdetect, bank->base +
+						OMAP4_GPIO_RISINGDETECT);
+			__raw_writel(bank->context.fallingdetect, bank->base +
+						OMAP4_GPIO_FALLINGDETECT);
+			__raw_writel(bank->context.dataout, bank->base +
+						OMAP4_GPIO_DATAOUT);
+		}
 	}
 }
-#endif
 
 static struct platform_driver omap_gpio_driver = {
 	.probe		= omap_gpio_probe,