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Diffstat (limited to 'arch/arm/plat-omap/gpio.c')
-rw-r--r--arch/arm/plat-omap/gpio.c134
1 files changed, 100 insertions, 34 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index ee0b21f..7fd89ba 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -6,6 +6,9 @@
* Copyright (C) 2003-2005 Nokia Corporation
* Written by Juha Yrjölä <juha.yrjola@nokia.com>
*
+ * Copyright (C) 2009 Texas Instruments
+ * Added OMAP4 support - Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
@@ -146,6 +149,16 @@
#define OMAP34XX_GPIO5_BASE IO_ADDRESS(0x49056000)
#define OMAP34XX_GPIO6_BASE IO_ADDRESS(0x49058000)
+/*
+ * OMAP44XX specific GPIO registers
+ */
+#define OMAP44XX_GPIO1_BASE IO_ADDRESS(0x4a310000)
+#define OMAP44XX_GPIO2_BASE IO_ADDRESS(0x48055000)
+#define OMAP44XX_GPIO3_BASE IO_ADDRESS(0x48057000)
+#define OMAP44XX_GPIO4_BASE IO_ADDRESS(0x48059000)
+#define OMAP44XX_GPIO5_BASE IO_ADDRESS(0x4805B000)
+#define OMAP44XX_GPIO6_BASE IO_ADDRESS(0x4805D000)
+
#define OMAP_MPUIO_VBASE IO_ADDRESS(OMAP_MPUIO_BASE)
struct gpio_bank {
@@ -153,11 +166,13 @@ struct gpio_bank {
u16 irq;
u16 virtual_irq_start;
int method;
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
+ defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
u32 suspend_wakeup;
u32 saved_wakeup;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
u32 non_wakeup_gpios;
u32 enabled_non_wakeup_gpios;
@@ -251,6 +266,24 @@ static struct gpio_bank gpio_bank_34xx[6] = {
#endif
+#ifdef CONFIG_ARCH_OMAP4
+static struct gpio_bank gpio_bank_44xx[6] = {
+ { OMAP44XX_GPIO1_BASE, INT_44XX_GPIO_BANK1, IH_GPIO_BASE, \
+ METHOD_GPIO_24XX },
+ { OMAP44XX_GPIO2_BASE, INT_44XX_GPIO_BANK2, IH_GPIO_BASE + 32, \
+ METHOD_GPIO_24XX },
+ { OMAP44XX_GPIO3_BASE, INT_44XX_GPIO_BANK3, IH_GPIO_BASE + 64, \
+ METHOD_GPIO_24XX },
+ { OMAP44XX_GPIO4_BASE, INT_44XX_GPIO_BANK4, IH_GPIO_BASE + 96, \
+ METHOD_GPIO_24XX },
+ { OMAP44XX_GPIO5_BASE, INT_44XX_GPIO_BANK5, IH_GPIO_BASE + 128, \
+ METHOD_GPIO_24XX },
+ { OMAP44XX_GPIO6_BASE, INT_44XX_GPIO_BANK6, IH_GPIO_BASE + 160, \
+ METHOD_GPIO_24XX },
+};
+
+#endif
+
static struct gpio_bank *gpio_bank;
static int gpio_bank_count;
@@ -273,7 +306,7 @@ static inline struct gpio_bank *get_gpio_bank(int gpio)
}
if (cpu_is_omap24xx())
return &gpio_bank[gpio >> 5];
- if (cpu_is_omap34xx())
+ if (cpu_is_omap34xx() || cpu_is_omap44xx())
return &gpio_bank[gpio >> 5];
BUG();
return NULL;
@@ -285,7 +318,7 @@ static inline int get_gpio_index(int gpio)
return gpio & 0x1f;
if (cpu_is_omap24xx())
return gpio & 0x1f;
- if (cpu_is_omap34xx())
+ if (cpu_is_omap34xx() || cpu_is_omap44xx())
return gpio & 0x1f;
return gpio & 0x0f;
}
@@ -307,7 +340,7 @@ static inline int gpio_valid(int gpio)
return 0;
if (cpu_is_omap24xx() && gpio < 128)
return 0;
- if (cpu_is_omap34xx() && gpio < 192)
+ if ((cpu_is_omap34xx() || cpu_is_omap44xx()) && gpio < 192)
return 0;
return -1;
}
@@ -353,7 +386,8 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
reg += OMAP850_GPIO_DIR_CONTROL;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_OE;
break;
@@ -425,7 +459,8 @@ static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
l &= ~(1 << gpio);
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
if (enable)
reg += OMAP24XX_GPIO_SETDATAOUT;
@@ -476,7 +511,8 @@ static int __omap_get_gpio_datain(int gpio)
reg += OMAP850_GPIO_DATA_INPUT;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_DATAIN;
break;
@@ -520,7 +556,7 @@ void omap_set_gpio_debounce(int gpio, int enable)
else
goto done;
- if (cpu_is_omap34xx()) {
+ if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
if (enable)
clk_enable(bank->dbck);
else
@@ -550,7 +586,8 @@ void omap_set_gpio_debounce_time(int gpio, int enc_time)
}
EXPORT_SYMBOL(omap_set_gpio_debounce_time);
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio,
int trigger)
{
@@ -660,7 +697,8 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger)
goto bad;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
set_24xx_gpio_triggering(bank, gpio, trigger);
break;
@@ -745,7 +783,8 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
reg += OMAP850_GPIO_INT_STATUS;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_IRQSTATUS1;
break;
@@ -814,7 +853,8 @@ static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank)
inv = 1;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_IRQENABLE1;
mask = 0xffffffff;
@@ -887,7 +927,8 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enab
l |= gpio_mask;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
if (enable)
reg += OMAP24XX_GPIO_SETIRQENABLE1;
@@ -932,7 +973,8 @@ static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable)
spin_unlock_irqrestore(&bank->lock, flags);
return 0;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
if (bank->non_wakeup_gpios & (1 << gpio)) {
printk(KERN_ERR "Unable to modify wakeup on "
@@ -1017,7 +1059,8 @@ static void omap_gpio_free(struct gpio_chip *chip, unsigned offset)
__raw_writel(1 << offset, reg);
}
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
if (bank->method == METHOD_GPIO_24XX) {
/* Disable wake-up during idle for dynamic tick */
void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
@@ -1069,7 +1112,8 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
if (bank->method == METHOD_GPIO_850)
isr_reg = bank->base + OMAP850_GPIO_INT_STATUS;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
if (bank->method == METHOD_GPIO_24XX)
isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1;
#endif
@@ -1346,7 +1390,7 @@ static int gpio_2irq(struct gpio_chip *chip, unsigned offset)
/*---------------------------------------------------------------------*/
static int initialized;
-#if !defined(CONFIG_ARCH_OMAP3)
+#if !(defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4))
static struct clk * gpio_ick;
#endif
@@ -1359,7 +1403,7 @@ static struct clk * gpio5_ick;
static struct clk * gpio5_fck;
#endif
-#if defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];
#endif
@@ -1419,8 +1463,8 @@ static int __init _omap_gpio_init(void)
}
#endif
-#if defined(CONFIG_ARCH_OMAP3)
- if (cpu_is_omap34xx()) {
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
+ if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
for (i = 0; i < OMAP34XX_NR_GPIOS; i++) {
sprintf(clk_name, "gpio%d_ick", i + 1);
gpio_iclks[i] = clk_get(NULL, clk_name);
@@ -1497,6 +1541,17 @@ static int __init _omap_gpio_init(void)
(rev >> 4) & 0x0f, rev & 0x0f);
}
#endif
+#ifdef CONFIG_ARCH_OMAP4
+ if (cpu_is_omap44xx()) {
+ int rev;
+
+ gpio_bank_count = OMAP34XX_NR_GPIOS;
+ gpio_bank = gpio_bank_44xx;
+ rev = __raw_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION);
+ printk(KERN_INFO "OMAP44xx GPIO hardware version %d.%d\n",
+ (rev >> 4) & 0x0f, rev & 0x0f);
+ }
+#endif
for (i = 0; i < gpio_bank_count; i++) {
int j, gpio_count = 16;
@@ -1520,7 +1575,8 @@ static int __init _omap_gpio_init(void)
gpio_count = 32; /* 730 has 32-bit GPIOs */
}
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
if (bank->method == METHOD_GPIO_24XX) {
static const u32 non_wakeup_gpios[] = {
0xe203ffc0, 0x08700040
@@ -1577,7 +1633,7 @@ static int __init _omap_gpio_init(void)
set_irq_chained_handler(bank->irq, gpio_irq_handler);
set_irq_data(bank->irq, bank);
- if (cpu_is_omap34xx()) {
+ if (cpu_is_omap34xx() || cpu_is_omap44xx()) {
sprintf(clk_name, "gpio%d_dbck", i + 1);
bank->dbck = clk_get(NULL, clk_name);
if (IS_ERR(bank->dbck))
@@ -1599,7 +1655,8 @@ static int __init _omap_gpio_init(void)
return 0;
}
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
+ defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
{
int i;
@@ -1622,7 +1679,8 @@ static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
wake_status = bank->base + OMAP24XX_GPIO_WAKE_EN;
wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
@@ -1663,7 +1721,8 @@ static int omap_gpio_resume(struct sys_device *dev)
wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
break;
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
case METHOD_GPIO_24XX:
wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA;
@@ -1695,7 +1754,8 @@ static struct sys_device omap_gpio_device = {
#endif
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
static int workaround_enabled;
@@ -1711,7 +1771,8 @@ void omap2_gpio_prepare_for_retention(void)
if (!(bank->enabled_non_wakeup_gpios))
continue;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
bank->saved_datain = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN);
l1 = __raw_readl(bank->base + OMAP24XX_GPIO_FALLINGDETECT);
l2 = __raw_readl(bank->base + OMAP24XX_GPIO_RISINGDETECT);
@@ -1720,7 +1781,8 @@ void omap2_gpio_prepare_for_retention(void)
bank->saved_risingdetect = l2;
l1 &= ~bank->enabled_non_wakeup_gpios;
l2 &= ~bank->enabled_non_wakeup_gpios;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
__raw_writel(l1, bank->base + OMAP24XX_GPIO_FALLINGDETECT);
__raw_writel(l2, bank->base + OMAP24XX_GPIO_RISINGDETECT);
#endif
@@ -1745,7 +1807,8 @@ void omap2_gpio_resume_after_retention(void)
if (!(bank->enabled_non_wakeup_gpios))
continue;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
__raw_writel(bank->saved_fallingdetect,
bank->base + OMAP24XX_GPIO_FALLINGDETECT);
__raw_writel(bank->saved_risingdetect,
@@ -1755,14 +1818,16 @@ void omap2_gpio_resume_after_retention(void)
* state. If so, generate an IRQ by software. This is
* horribly racy, but it's the best we can do to work around
* this silicon bug. */
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
l = __raw_readl(bank->base + OMAP24XX_GPIO_DATAIN);
#endif
l ^= bank->saved_datain;
l &= bank->non_wakeup_gpios;
if (l) {
u32 old0, old1;
-#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX) || \
+ defined(CONFIG_ARCH_OMAP4)
old0 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT0);
old1 = __raw_readl(bank->base + OMAP24XX_GPIO_LEVELDETECT1);
__raw_writel(old0 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT0);
@@ -1798,7 +1863,8 @@ static int __init omap_gpio_sysinit(void)
mpuio_init();
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
+ defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
if (ret == 0) {
ret = sysdev_class_register(&omap_gpio_sysclass);
@@ -1887,7 +1953,7 @@ static int dbg_gpio_show(struct seq_file *s, void *unused)
irqstat = irq_desc[irq].status;
#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || \
- defined(CONFIG_ARCH_OMAP34XX)
+ defined(CONFIG_ARCH_OMAP34XX) || defined(CONFIG_ARCH_OMAP4)
if (is_in && ((bank->suspend_wakeup & mask)
|| irqstat & IRQ_TYPE_SENSE_MASK)) {
char *trigger = NULL;
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