From: Syed Mohammed, Khasim <x0khasim@xxxxxx>
This patch adds 3430 gpio support.
It also contains a fix by Paul Walmsley <paul@xxxxxxxxx> to use the
correct clock names for OMAP3430.
Signed-off-by: Syed Mohammed Khasim <x0khasim@xxxxxx>
Signed-off-by: Paul Walmsley <paul@xxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/plat-omap/gpio.c | 167 ++++++++++++++++++++++++++++++--------
include/asm-arm/arch-omap/gpio.h | 2 +
2 files changed, 134 insertions(+), 35 deletions(-)
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 6097753..8321228 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -117,17 +117,29 @@
#define OMAP24XX_GPIO_CLEARDATAOUT 0x0090
#define OMAP24XX_GPIO_SETDATAOUT 0x0094
+/*
+ * omap34xx specific GPIO registers
+ */
+
+#define OMAP34XX_GPIO1_BASE (void __iomem *)0x48310000
+#define OMAP34XX_GPIO2_BASE (void __iomem *)0x49050000
+#define OMAP34XX_GPIO3_BASE (void __iomem *)0x49052000
+#define OMAP34XX_GPIO4_BASE (void __iomem *)0x49054000
+#define OMAP34XX_GPIO5_BASE (void __iomem *)0x49056000
+#define OMAP34XX_GPIO6_BASE (void __iomem *)0x49058000
+
+
struct gpio_bank {
void __iomem *base;
u16 irq;
u16 virtual_irq_start;
int method;
u32 reserved_map;
-#if defined (CONFIG_ARCH_OMAP16XX) || defined (CONFIG_ARCH_OMAP24XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
u32 suspend_wakeup;
u32 saved_wakeup;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
u32 non_wakeup_gpios;
u32 enabled_non_wakeup_gpios;
@@ -192,6 +204,18 @@ static struct gpio_bank gpio_bank_243x[5] = {
#endif
+#ifdef CONFIG_ARCH_OMAP34XX
+static struct gpio_bank gpio_bank_34xx[6] = {
+ { OMAP34XX_GPIO1_BASE, INT_34XX_GPIO_BANK1, IH_GPIO_BASE, METHOD_GPIO_24XX },
+ { OMAP34XX_GPIO2_BASE, INT_34XX_GPIO_BANK2, IH_GPIO_BASE + 32, METHOD_GPIO_24XX },
+ { OMAP34XX_GPIO3_BASE, INT_34XX_GPIO_BANK3, IH_GPIO_BASE + 64, METHOD_GPIO_24XX },
+ { OMAP34XX_GPIO4_BASE, INT_34XX_GPIO_BANK4, IH_GPIO_BASE + 96, METHOD_GPIO_24XX },
+ { OMAP34XX_GPIO5_BASE, INT_34XX_GPIO_BANK5, IH_GPIO_BASE + 128, METHOD_GPIO_24XX },
+ { OMAP34XX_GPIO6_BASE, INT_34XX_GPIO_BANK6, IH_GPIO_BASE + 160, METHOD_GPIO_24XX },
+};
+
+#endif
+
static struct gpio_bank *gpio_bank;
static int gpio_bank_count;
@@ -222,6 +246,10 @@ static inline struct gpio_bank *get_gpio_bank(int gpio)
if (cpu_is_omap24xx())
return &gpio_bank[gpio >> 5];
#endif
+#ifdef CONFIG_ARCH_OMAP34XX
+ if (cpu_is_omap34xx())
+ return &gpio_bank[gpio >> 5];
+#endif
}
static inline int get_gpio_index(int gpio)
@@ -234,6 +262,10 @@ static inline int get_gpio_index(int gpio)
if (cpu_is_omap24xx())
return gpio & 0x1f;
#endif
+#ifdef CONFIG_ARCH_OMAP34XX
+ if (cpu_is_omap34xx())
+ return gpio & 0x1f;
+#endif
return gpio & 0x0f;
}
@@ -264,6 +296,10 @@ static inline int gpio_valid(int gpio)
if (cpu_is_omap24xx() && gpio < 128)
return 0;
#endif
+#ifdef CONFIG_ARCH_OMAP34XX
+ if (cpu_is_omap34xx() && gpio < 160)
+ return 0;
+#endif
return -1;
}
@@ -303,7 +339,7 @@ static void _set_gpio_direction(struct gpio_bank *bank, int gpio, int is_input)
reg += OMAP730_GPIO_DIR_CONTROL;
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_OE;
break;
@@ -377,7 +413,7 @@ static void _set_gpio_dataout(struct gpio_bank *bank, int gpio, int enable)
l &= ~(1 << gpio);
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
if (enable)
reg += OMAP24XX_GPIO_SETDATAOUT;
@@ -435,7 +471,7 @@ int omap_get_gpio_datain(int gpio)
reg += OMAP730_GPIO_DATA_INPUT;
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_DATAIN;
break;
@@ -455,7 +491,7 @@ do { \
__raw_writel(l, base + reg); \
} while(0)
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
static inline void set_24xx_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger)
{
void __iomem *base = bank->base;
@@ -547,7 +583,7 @@ static int _set_gpio_triggering(struct gpio_bank *bank, int gpio, int trigger)
goto bad;
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
set_24xx_gpio_triggering(bank, gpio, trigger);
break;
@@ -567,7 +603,7 @@ static int gpio_irq_type(unsigned irq, unsigned type)
unsigned gpio;
int retval;
- if (!cpu_is_omap24xx() && irq > IH_MPUIO_BASE)
+ if (!(cpu_class_is_omap2()) && irq > IH_MPUIO_BASE)
gpio = OMAP_MPUIO(irq - IH_MPUIO_BASE);
else
gpio = irq - IH_GPIO_BASE;
@@ -579,7 +615,7 @@ static int gpio_irq_type(unsigned irq, unsigned type)
return -EINVAL;
/* OMAP1 allows only only edge triggering */
- if (!cpu_is_omap24xx()
+ if (!(cpu_class_is_omap2())
&& (type & (IRQ_TYPE_LEVEL_LOW|IRQ_TYPE_LEVEL_HIGH)))
return -EINVAL;
@@ -620,7 +656,7 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
reg += OMAP730_GPIO_INT_STATUS;
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_IRQSTATUS1;
break;
@@ -632,8 +668,10 @@ static void _clear_gpio_irqbank(struct gpio_bank *bank, int gpio_mask)
__raw_writel(gpio_mask, reg);
/* Workaround for clearing DSP GPIO interrupts to allow retention */
- if (cpu_is_omap2420())
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+ if (cpu_is_omap24xx() || cpu_is_omap34xx())
__raw_writel(gpio_mask, bank->base + OMAP24XX_GPIO_IRQSTATUS2);
+#endif
}
static inline void _clear_gpio_irqstatus(struct gpio_bank *bank, int gpio)
@@ -676,7 +714,7 @@ static u32 _get_gpio_irqbank_mask(struct gpio_bank *bank)
inv = 1;
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
reg += OMAP24XX_GPIO_IRQENABLE1;
mask = 0xffffffff;
@@ -739,7 +777,7 @@ static void _enable_gpio_irqbank(struct gpio_bank *bank, int gpio_mask, int enab
l |= gpio_mask;
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
if (enable)
reg += OMAP24XX_GPIO_SETIRQENABLE1;
@@ -785,7 +823,7 @@ static int _set_gpio_wakeup(struct gpio_bank *bank, int gpio, int enable)
spin_unlock(&bank->lock);
return 0;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
if (bank->non_wakeup_gpios & (1 << gpio)) {
printk(KERN_ERR "Unable to modify wakeup on "
@@ -891,7 +929,7 @@ void omap_free_gpio(int gpio)
__raw_writel(1 << get_gpio_index(gpio), reg);
}
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
if (bank->method == METHOD_GPIO_24XX) {
/* Disable wake-up during idle for dynamic tick */
void __iomem *reg = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
@@ -940,7 +978,7 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
if (bank->method == METHOD_GPIO_730)
isr_reg = bank->base + OMAP730_GPIO_INT_STATUS;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
if (bank->method == METHOD_GPIO_24XX)
isr_reg = bank->base + OMAP24XX_GPIO_IRQSTATUS1;
#endif
@@ -954,7 +992,7 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
if (cpu_is_omap15xx() && (bank->method == METHOD_MPUIO))
isr &= 0x0000ffff;
- if (cpu_is_omap24xx()) {
+ if (cpu_class_is_omap2()) {
level_mask =
__raw_readl(bank->base +
OMAP24XX_GPIO_LEVELDETECT0) |
@@ -1023,7 +1061,7 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
}
}
- if (cpu_is_omap24xx()) {
+ if (cpu_class_is_omap2()) {
/* clear level sensitive interrupts after handler(s) */
_enable_gpio_irqbank(bank, isr_saved & level_mask, 0);
_clear_gpio_irqbank(bank, isr_saved & level_mask);
@@ -1199,21 +1237,35 @@ static inline void mpuio_init(void) {}
/*---------------------------------------------------------------------*/
static int initialized;
+#if !defined(CONFIG_ARCH_OMAP3)
static struct clk * gpio_ick;
+#endif
+
+#if defined(CONFIG_ARCH_OMAP2)
static struct clk * gpio_fck;
+#endif
-#ifdef CONFIG_ARCH_OMAP2430
+#if defined(CONFIG_ARCH_OMAP2430)
static struct clk * gpio5_ick;
static struct clk * gpio5_fck;
#endif
+#if defined(CONFIG_ARCH_OMAP3)
+static struct clk *gpio_fclks[OMAP34XX_NR_GPIOS];
+static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];
+#endif
+
static int __init _omap_gpio_init(void)
{
int i;
struct gpio_bank *bank;
+#if defined(CONFIG_ARCH_OMAP3)
+ char clk_name[11];
+#endif
initialized = 1;
+#if defined(CONFIG_ARCH_OMAP1)
if (cpu_is_omap15xx()) {
gpio_ick = clk_get(NULL, "arm_gpio_ck");
if (IS_ERR(gpio_ick))
@@ -1221,7 +1273,9 @@ static int __init _omap_gpio_init(void)
else
clk_enable(gpio_ick);
}
- if (cpu_is_omap24xx()) {
+#endif
+#if defined(CONFIG_ARCH_OMAP2)
+ if (cpu_class_is_omap2()) {
gpio_ick = clk_get(NULL, "gpios_ick");
if (IS_ERR(gpio_ick))
printk("Could not get gpios_ick\n");
@@ -1234,9 +1288,9 @@ static int __init _omap_gpio_init(void)
clk_enable(gpio_fck);
/*
- * On 2430 GPIO 5 uses CORE L4 ICLK
+ * On 2430 & 3430 GPIO 5 uses CORE L4 ICLK
*/
-#ifdef CONFIG_ARCH_OMAP2430
+#if defined(CONFIG_ARCH_OMAP2430)
if (cpu_is_omap2430()) {
gpio5_ick = clk_get(NULL, "gpio5_ick");
if (IS_ERR(gpio5_ick))
@@ -1250,7 +1304,28 @@ static int __init _omap_gpio_init(void)
clk_enable(gpio5_fck);
}
#endif
-}
+ }
+#endif
+
+#if defined(CONFIG_ARCH_OMAP3)
+ if (cpu_is_omap34xx()) {
+ for (i = 0; i < OMAP34XX_NR_GPIOS; i++) {
+ sprintf(clk_name, "gpio%d_ick", i + 1);
+ gpio_iclks[i] = clk_get(NULL, clk_name);
+ if (IS_ERR(gpio_iclks[i]))
+ printk(KERN_ERR "Could not get %s\n", clk_name);
+ else
+ clk_enable(gpio_iclks[i]);
+ sprintf(clk_name, "gpio%d_fck", i + 1);
+ gpio_fclks[i] = clk_get(NULL, clk_name);
+ if (IS_ERR(gpio_fclks[i]))
+ printk(KERN_ERR "Could not get %s\n", clk_name);
+ else
+ clk_enable(gpio_fclks[i]);
+ }
+ }
+#endif
+
#ifdef CONFIG_ARCH_OMAP15XX
if (cpu_is_omap15xx()) {
@@ -1298,6 +1373,17 @@ static int __init _omap_gpio_init(void)
(rev >> 4) & 0x0f, rev & 0x0f);
}
#endif
+#ifdef CONFIG_ARCH_OMAP34XX
+ if (cpu_is_omap34xx()) {
+ int rev;
+
+ gpio_bank_count = OMAP34XX_NR_GPIOS;
+ gpio_bank = gpio_bank_34xx;
+ rev = omap_readl(gpio_bank[0].base + OMAP24XX_GPIO_REVISION);
+ printk(KERN_INFO "OMAP34xx 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;
@@ -1328,7 +1414,7 @@ static int __init _omap_gpio_init(void)
gpio_count = 32; /* 730 has 32-bit GPIOs */
}
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
if (bank->method == METHOD_GPIO_24XX) {
static const u32 non_wakeup_gpios[] = {
0xe203ffc0, 0x08700040
@@ -1364,21 +1450,23 @@ static int __init _omap_gpio_init(void)
if (cpu_is_omap16xx())
omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04, ULPD_CAM_CLK_CTRL);
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX)
/* Enable autoidle for the OCP interface */
if (cpu_is_omap24xx())
omap_writel(1 << 0, 0x48019010);
+#elif defined(CONFIG_ARCH_OMAP34XX)
+ if (cpu_is_omap34xx())
+ omap_writel(1 << 0, 0x48306814);
#endif
-
return 0;
}
-#if defined (CONFIG_ARCH_OMAP16XX) || defined (CONFIG_ARCH_OMAP24XX)
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
{
int i;
- if (!cpu_is_omap24xx() && !cpu_is_omap16xx())
+ if ((!cpu_class_is_omap2()) && (!cpu_is_omap16xx()))
return 0;
for (i = 0; i < gpio_bank_count; i++) {
@@ -1395,7 +1483,7 @@ static int omap_gpio_suspend(struct sys_device *dev, pm_message_t mesg)
wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
wake_status = bank->base + OMAP24XX_GPIO_SETWKUENA;
wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
@@ -1435,7 +1523,7 @@ static int omap_gpio_resume(struct sys_device *dev)
wake_set = bank->base + OMAP1610_GPIO_SET_WAKEUPENA;
break;
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
case METHOD_GPIO_24XX:
wake_clear = bank->base + OMAP24XX_GPIO_CLEARWKUENA;
wake_set = bank->base + OMAP24XX_GPIO_SETWKUENA;
@@ -1467,7 +1555,7 @@ static struct sys_device omap_gpio_device = {
#endif
-#ifdef CONFIG_ARCH_OMAP24XX
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
static int workaround_enabled;
@@ -1483,15 +1571,19 @@ void omap2_gpio_prepare_for_retention(void)
if (!(bank->enabled_non_wakeup_gpios))
continue;
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
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);
+#endif
bank->saved_fallingdetect = l1;
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)
__raw_writel(l1, bank->base + OMAP24XX_GPIO_FALLINGDETECT);
__raw_writel(l2, bank->base + OMAP24XX_GPIO_RISINGDETECT);
+#endif
c++;
}
if (!c) {
@@ -1513,26 +1605,31 @@ void omap2_gpio_resume_after_retention(void)
if (!(bank->enabled_non_wakeup_gpios))
continue;
+#if defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
__raw_writel(bank->saved_fallingdetect,
bank->base + OMAP24XX_GPIO_FALLINGDETECT);
__raw_writel(bank->saved_risingdetect,
bank->base + OMAP24XX_GPIO_RISINGDETECT);
+#endif
/* Check if any of the non-wakeup interrupt GPIOs have changed
* 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)
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)
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);
__raw_writel(old1 | l, bank->base + OMAP24XX_GPIO_LEVELDETECT1);
__raw_writel(old0, bank->base + OMAP24XX_GPIO_LEVELDETECT0);
__raw_writel(old1, bank->base + OMAP24XX_GPIO_LEVELDETECT1);
+#endif
}
}
@@ -1561,8 +1658,8 @@ static int __init omap_gpio_sysinit(void)
mpuio_init();
-#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX)
- if (cpu_is_omap16xx() || cpu_is_omap24xx()) {
+#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP24XX) || defined(CONFIG_ARCH_OMAP34XX)
+ if (cpu_is_omap16xx() || cpu_class_is_omap2()) {
if (ret == 0) {
ret = sysdev_class_register(&omap_gpio_sysclass);
if (ret == 0)
@@ -1624,7 +1721,7 @@ static int dbg_gpio_show(struct seq_file *s, void *unused)
if (bank_is_mpuio(bank))
gpio = OMAP_MPUIO(0);
- else if (cpu_is_omap24xx() || cpu_is_omap730())
+ else if (cpu_class_is_omap2() || cpu_is_omap730())
bankwidth = 32;
for (j = 0; j < bankwidth; j++, gpio++, mask <<= 1) {
diff --git a/include/asm-arm/arch-omap/gpio.h b/include/asm-arm/arch-omap/gpio.h
index 97b397d..c782ef9 100644
--- a/include/asm-arm/arch-omap/gpio.h
+++ b/include/asm-arm/arch-omap/gpio.h
@@ -62,6 +62,8 @@
#define OMAP_MPUIO_LATCH 0x34
#endif
+#define OMAP34XX_NR_GPIOS 6
+
#define OMAP_MPUIO(nr) (OMAP_MAX_GPIO_LINES + (nr))
#define OMAP_GPIO_IS_MPUIO(nr) ((nr) >= OMAP_MAX_GPIO_LINES)
--
1.5.3.6
-
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