----- Original Message -----
From: "Syed Rafiuddin" <rafiuddin.syed@xxxxxx>
To: <linux-omap@xxxxxxxxxxxxxxx>
Sent: Saturday, May 23, 2009 5:41 PM
Subject: [PATCH][RFC] OMAP4: GPIO Support for OMAP_4430SDP
This patch updates register and offset address with respect to OMAP4.
Signed-off-by: <rafiuddin.syed@xxxxxx>
---
arch/arm/plat-omap/gpio.c | 133
+++++++++++++++++++++++++++++++++++-----------
1 files changed, 102 insertions(+), 31 deletions(-)
Index: linux-2.6/arch/arm/plat-omap/gpio.c
===================================================================
--- linux-2.6.orig/arch/arm/plat-omap/gpio.c 2009-05-18 14:24:54.000000000
+0530
+++ linux-2.6/arch/arm/plat-omap/gpio.c 2009-05-18 15:36:35.000000000
+0530
@@ -113,30 +113,70 @@
#define OMAP243X_GPIO4_BASE IO_ADDRESS(0x49012000)
#define OMAP243X_GPIO5_BASE IO_ADDRESS(0x480B6000)
+
#define OMAP24XX_GPIO_REVISION 0x0000
#define OMAP24XX_GPIO_SYSCONFIG 0x0010
-#define OMAP24XX_GPIO_SYSSTATUS 0x0014
-#define OMAP24XX_GPIO_IRQSTATUS1 0x0018
-#define OMAP24XX_GPIO_IRQSTATUS2 0x0028
-#define OMAP24XX_GPIO_IRQENABLE2 0x002c
-#define OMAP24XX_GPIO_IRQENABLE1 0x001c
-#define OMAP24XX_GPIO_WAKE_EN 0x0020
-#define OMAP24XX_GPIO_CTRL 0x0030
-#define OMAP24XX_GPIO_OE 0x0034
-#define OMAP24XX_GPIO_DATAIN 0x0038
-#define OMAP24XX_GPIO_DATAOUT 0x003c
-#define OMAP24XX_GPIO_LEVELDETECT0 0x0040
-#define OMAP24XX_GPIO_LEVELDETECT1 0x0044
-#define OMAP24XX_GPIO_RISINGDETECT 0x0048
-#define OMAP24XX_GPIO_FALLINGDETECT 0x004c
-#define OMAP24XX_GPIO_DEBOUNCE_EN 0x0050
-#define OMAP24XX_GPIO_DEBOUNCE_VAL 0x0054
-#define OMAP24XX_GPIO_CLEARIRQENABLE1 0x0060
-#define OMAP24XX_GPIO_SETIRQENABLE1 0x0064
-#define OMAP24XX_GPIO_CLEARWKUENA 0x0080
-#define OMAP24XX_GPIO_SETWKUENA 0x0084
-#define OMAP24XX_GPIO_CLEARDATAOUT 0x0090
-#define OMAP24XX_GPIO_SETDATAOUT 0x0094
+
+
+#ifdef CONFIG_ARCH_OMAP4
+#define OMAP24XX_GPIO_SYSSTATUS 0x0114
+#define OMAP24XX_GPIO_IRQSTATUS1 0x0118
+#define OMAP24XX_GPIO_IRQSTATUS2 0x0128
Could you explain difference between OMAP24XX_GPIO_IRQSTATUS1
and OMAP24XX_GPIO_IRQ_STATUS_1 i.e why are two
sets of registers required and similarly for other registers too.
+#define OMAP24XX_GPIO_IRQENABLE2 0x012c
+#define OMAP24XX_GPIO_IRQENABLE1 0x011c
+#define OMAP24XX_GPIO_WAKE_EN 0x0120
+#define OMAP24XX_GPIO_CTRL 0x0130
+#define OMAP24XX_GPIO_OE 0x0134
+#define OMAP24XX_GPIO_DATAIN 0x0138
+#define OMAP24XX_GPIO_DATAOUT 0x013c
+#define OMAP24XX_GPIO_LEVELDETECT0 0x0140
+#define OMAP24XX_GPIO_LEVELDETECT1 0x0144
+#define OMAP24XX_GPIO_RISINGDETECT 0x0148
+#define OMAP24XX_GPIO_FALLINGDETECT 0x014c
+#define OMAP24XX_GPIO_DEBOUNCE_EN 0x0150
+#define OMAP24XX_GPIO_DEBOUNCE_VAL 0x0154
+#define OMAP24XX_GPIO_CLEARIRQENABLE1 0x0160
+#define OMAP24XX_GPIO_SETIRQENABLE1 0x0164
+#define OMAP24XX_GPIO_CLEARWKUENA 0x0180
+#define OMAP24XX_GPIO_SETWKUENA 0x0184
+#define OMAP24XX_GPIO_CLEARDATAOUT 0x0190
+#define OMAP24XX_GPIO_SETDATAOUT 0x0194
+#define OMAP24XX_GPIO_STATUS_RAW_0 0x0024
+#define OMAP24XX_GPIO_STATUS_RAW_1 0x0028
+#define OMAP24XX_GPIO_IRQ_STATUS_0 0x002C
+#define OMAP24XX_GPIO_IRQ_STATUS_1 0x0030
+#define OMAP24XX_GPIO_IRQ_STATUS_SET_0 0x0034
+#define OMAP24XX_GPIO_IRQ_STATUS_SET_1 0x0038
+#define OMAP24XX_GPIO_IRQ_STATUS_CLR_0 0x003C
+#define OMAP24XX_GPIO_IRQ_STATUS_CLR_1 0x0040
+#define OMAP24XX_GPIO_IRQ_WAKE_ENABLE_0 0x0044
+#define OMAP24XX_GPIO_IRQ_WAKE_ENABLE_1 0x0048
+
+#else
+#define OMAP24XX_GPIO_SYSSTATUS 0x0014
+#define OMAP24XX_GPIO_IRQSTATUS1 0x0018
+#define OMAP24XX_GPIO_IRQSTATUS2 0x0028
+#define OMAP24XX_GPIO_IRQENABLE2 0x002c
+#define OMAP24XX_GPIO_IRQENABLE1 0x001c
+#define OMAP24XX_GPIO_WAKE_EN 0x0020
+#define OMAP24XX_GPIO_CTRL 0x0030
+#define OMAP24XX_GPIO_OE 0x0034
+#define OMAP24XX_GPIO_DATAIN 0x0038
+#define OMAP24XX_GPIO_DATAOUT 0x003c
+#define OMAP24XX_GPIO_LEVELDETECT0 0x0040
+#define OMAP24XX_GPIO_LEVELDETECT1 0x0044
+#define OMAP24XX_GPIO_RISINGDETECT 0x0048
+#define OMAP24XX_GPIO_FALLINGDETECT 0x004c
+#define OMAP24XX_GPIO_DEBOUNCE_EN 0x0050
+#define OMAP24XX_GPIO_DEBOUNCE_VAL 0x0054
+#define OMAP24XX_GPIO_CLEARIRQENABLE1 0x0060
+#define OMAP24XX_GPIO_SETIRQENABLE1 0x0064
+#define OMAP24XX_GPIO_CLEARWKUENA 0x0080
+#define OMAP24XX_GPIO_SETWKUENA 0x0084
+#define OMAP24XX_GPIO_CLEARDATAOUT 0x0090
+#define OMAP24XX_GPIO_SETDATAOUT 0x0094
+
+#endif
/*
* omap34xx specific GPIO registers
@@ -783,12 +823,16 @@
reg += OMAP850_GPIO_INT_STATUS;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
- defined(CONFIG_ARCH_OMAP4)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_IRQSTATUS1;
break;
#endif
+#if defined(CONFIG_ARCH_OMAP4)
+ case METHOD_GPIO_24XX:
+ reg += OMAP24XX_GPIO_IRQ_STATUS_0;
+ break;
+#endif
default:
WARN_ON(1);
return;
@@ -804,6 +848,15 @@
/* Flush posted write for the irq status to avoid spurious interrupts */
__raw_readl(reg);
#endif
+
+#if defined(CONFIG_ARCH_OMAP4)
+ reg = bank->base + OMAP24XX_GPIO_IRQ_STATUS_1;
+ if (cpu_is_omap44xx())
+ __raw_writel(gpio_mask, reg);
+
+ /* Flush posted write for the irq status to avoid spurious interrupts */
+ __raw_readl(reg);
+#endif
}
static inline void _clear_gpio_irqstatus(struct gpio_bank *bank, int gpio)
@@ -853,13 +906,18 @@
inv = 1;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
- defined(CONFIG_ARCH_OMAP4)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_IRQENABLE1;
mask = 0xffffffff;
break;
#endif
+#if defined(CONFIG_ARCH_OMAP4)
+ case METHOD_GPIO_24XX:
+ reg += OMAP24XX_GPIO_IRQ_STATUS_SET_0;
+ mask = 0xffffffff;
+ break;
+#endif
default:
WARN_ON(1);
return 0;
@@ -1112,11 +1170,15 @@
if (bank->method == METHOD_GPIO_850)
isr_reg = bank->base + OMAP850_GPIO_INT_STATUS;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
- defined(CONFIG_ARCH_OMAP4)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
if (bank->method == METHOD_GPIO_24XX)
isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1;
#endif
+#if defined(CONFIG_ARCH_OMAP4)
+ if (bank->method == METHOD_GPIO_24XX)
+ isr_reg = bank->base + OMAP24XX_GPIO_IRQ_STATUS_0;
+#endif
+
while(1) {
u32 isr_saved, level_mask = 0;
u32 enabled;
@@ -1582,9 +1644,18 @@
0xe203ffc0, 0x08700040
};
- __raw_writel(0x00000000, bank->base + OMAP24XX_GPIO_IRQENABLE1);
- __raw_writel(0xffffffff, bank->base + OMAP24XX_GPIO_IRQSTATUS1);
- __raw_writew(0x0015, bank->base + OMAP24XX_GPIO_SYSCONFIG);
+#if defined(CONFIG_ARCH_OMAP4)
+ __raw_writel(0x00000000, bank->base +
+ OMAP24XX_GPIO_IRQ_STATUS_CLR_0);
+ __raw_writel(0xffffffff, bank->base +
+ OMAP24XX_GPIO_IRQ_STATUS_0);
+#else
+ __raw_writel(0x00000000, bank->base +
+ MAP24XX_GPIO_IRQENABLE1);
+ __raw_writel(0xffffffff, bank->base +
+ OMAP24XX_GPIO_IRQSTATUS1);
+#endif
+ __raw_writew(0x0015, bank->base + OMAP24XX_GPIO_SYSCONFIG);
/* Initialize interface clock ungated, module enabled */
__raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL);
---
Syed Rafiuddin
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