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-rw-r--r--arch/arm/plat-omap/gpio.c413
1 files changed, 98 insertions, 315 deletions
diff --git a/arch/arm/plat-omap/gpio.c b/arch/arm/plat-omap/gpio.c
index 2b0d90109828..6f53dee98a91 100644
--- a/arch/arm/plat-omap/gpio.c
+++ b/arch/arm/plat-omap/gpio.c
@@ -21,6 +21,8 @@
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/io.h>
+#include <linux/slab.h>
+#include <linux/pm_runtime.h>
#include <mach/hardware.h>
#include <asm/irq.h>
@@ -32,7 +34,6 @@
/*
* OMAP1510 GPIO registers
*/
-#define OMAP1510_GPIO_BASE 0xfffce000
#define OMAP1510_GPIO_DATA_INPUT 0x00
#define OMAP1510_GPIO_DATA_OUTPUT 0x04
#define OMAP1510_GPIO_DIR_CONTROL 0x08
@@ -46,10 +47,6 @@
/*
* OMAP1610 specific GPIO registers
*/
-#define OMAP1610_GPIO1_BASE 0xfffbe400
-#define OMAP1610_GPIO2_BASE 0xfffbec00
-#define OMAP1610_GPIO3_BASE 0xfffbb400
-#define OMAP1610_GPIO4_BASE 0xfffbbc00
#define OMAP1610_GPIO_REVISION 0x0000
#define OMAP1610_GPIO_SYSCONFIG 0x0010
#define OMAP1610_GPIO_SYSSTATUS 0x0014
@@ -71,12 +68,6 @@
/*
* OMAP7XX specific GPIO registers
*/
-#define OMAP7XX_GPIO1_BASE 0xfffbc000
-#define OMAP7XX_GPIO2_BASE 0xfffbc800
-#define OMAP7XX_GPIO3_BASE 0xfffbd000
-#define OMAP7XX_GPIO4_BASE 0xfffbd800
-#define OMAP7XX_GPIO5_BASE 0xfffbe000
-#define OMAP7XX_GPIO6_BASE 0xfffbe800
#define OMAP7XX_GPIO_DATA_INPUT 0x00
#define OMAP7XX_GPIO_DATA_OUTPUT 0x04
#define OMAP7XX_GPIO_DIR_CONTROL 0x08
@@ -84,25 +75,10 @@
#define OMAP7XX_GPIO_INT_MASK 0x10
#define OMAP7XX_GPIO_INT_STATUS 0x14
-#define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
-
/*
- * omap24xx specific GPIO registers
+ * omap2+ specific GPIO registers
*/
-#define OMAP242X_GPIO1_BASE 0x48018000
-#define OMAP242X_GPIO2_BASE 0x4801a000
-#define OMAP242X_GPIO3_BASE 0x4801c000
-#define OMAP242X_GPIO4_BASE 0x4801e000
-
-#define OMAP243X_GPIO1_BASE 0x4900C000
-#define OMAP243X_GPIO2_BASE 0x4900E000
-#define OMAP243X_GPIO3_BASE 0x49010000
-#define OMAP243X_GPIO4_BASE 0x49012000
-#define OMAP243X_GPIO5_BASE 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
@@ -126,7 +102,6 @@
#define OMAP24XX_GPIO_SETDATAOUT 0x0094
#define OMAP4_GPIO_REVISION 0x0000
-#define OMAP4_GPIO_SYSCONFIG 0x0010
#define OMAP4_GPIO_EOI 0x0020
#define OMAP4_GPIO_IRQSTATUSRAW0 0x0024
#define OMAP4_GPIO_IRQSTATUSRAW1 0x0028
@@ -138,7 +113,6 @@
#define OMAP4_GPIO_IRQSTATUSCLR1 0x0040
#define OMAP4_GPIO_IRQWAKEN0 0x0044
#define OMAP4_GPIO_IRQWAKEN1 0x0048
-#define OMAP4_GPIO_SYSSTATUS 0x0114
#define OMAP4_GPIO_IRQENABLE1 0x011c
#define OMAP4_GPIO_WAKE_EN 0x0120
#define OMAP4_GPIO_IRQSTATUS2 0x0128
@@ -159,26 +133,6 @@
#define OMAP4_GPIO_SETWKUENA 0x0184
#define OMAP4_GPIO_CLEARDATAOUT 0x0190
#define OMAP4_GPIO_SETDATAOUT 0x0194
-/*
- * omap34xx specific GPIO registers
- */
-
-#define OMAP34XX_GPIO1_BASE 0x48310000
-#define OMAP34XX_GPIO2_BASE 0x49050000
-#define OMAP34XX_GPIO3_BASE 0x49052000
-#define OMAP34XX_GPIO4_BASE 0x49054000
-#define OMAP34XX_GPIO5_BASE 0x49056000
-#define OMAP34XX_GPIO6_BASE 0x49058000
-
-/*
- * OMAP44XX specific GPIO registers
- */
-#define OMAP44XX_GPIO1_BASE 0x4a310000
-#define OMAP44XX_GPIO2_BASE 0x48055000
-#define OMAP44XX_GPIO3_BASE 0x48057000
-#define OMAP44XX_GPIO4_BASE 0x48059000
-#define OMAP44XX_GPIO5_BASE 0x4805B000
-#define OMAP44XX_GPIO6_BASE 0x4805D000
struct gpio_bank {
unsigned long pbase;
@@ -203,97 +157,12 @@ struct gpio_bank {
struct clk *dbck;
u32 mod_usage;
u32 dbck_enable_mask;
+ struct device *dev;
+ bool dbck_flag;
};
-#ifdef CONFIG_ARCH_OMAP16XX
-static struct gpio_bank gpio_bank_1610[5] = {
- { OMAP1_MPUIO_VBASE, NULL, INT_MPUIO, IH_MPUIO_BASE,
- METHOD_MPUIO },
- { OMAP1610_GPIO1_BASE, NULL, INT_GPIO_BANK1, IH_GPIO_BASE,
- METHOD_GPIO_1610 },
- { OMAP1610_GPIO2_BASE, NULL, INT_1610_GPIO_BANK2, IH_GPIO_BASE + 16,
- METHOD_GPIO_1610 },
- { OMAP1610_GPIO3_BASE, NULL, INT_1610_GPIO_BANK3, IH_GPIO_BASE + 32,
- METHOD_GPIO_1610 },
- { OMAP1610_GPIO4_BASE, NULL, INT_1610_GPIO_BANK4, IH_GPIO_BASE + 48,
- METHOD_GPIO_1610 },
-};
-#endif
-
-#ifdef CONFIG_ARCH_OMAP15XX
-static struct gpio_bank gpio_bank_1510[2] = {
- { OMAP1_MPUIO_VBASE, NULL, INT_MPUIO, IH_MPUIO_BASE,
- METHOD_MPUIO },
- { OMAP1510_GPIO_BASE, NULL, INT_GPIO_BANK1, IH_GPIO_BASE,
- METHOD_GPIO_1510 }
-};
-#endif
-
-#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
-static struct gpio_bank gpio_bank_7xx[7] = {
- { OMAP1_MPUIO_VBASE, NULL, INT_7XX_MPUIO, IH_MPUIO_BASE,
- METHOD_MPUIO },
- { OMAP7XX_GPIO1_BASE, NULL, INT_7XX_GPIO_BANK1, IH_GPIO_BASE,
- METHOD_GPIO_7XX },
- { OMAP7XX_GPIO2_BASE, NULL, INT_7XX_GPIO_BANK2, IH_GPIO_BASE + 32,
- METHOD_GPIO_7XX },
- { OMAP7XX_GPIO3_BASE, NULL, INT_7XX_GPIO_BANK3, IH_GPIO_BASE + 64,
- METHOD_GPIO_7XX },
- { OMAP7XX_GPIO4_BASE, NULL, INT_7XX_GPIO_BANK4, IH_GPIO_BASE + 96,
- METHOD_GPIO_7XX },
- { OMAP7XX_GPIO5_BASE, NULL, INT_7XX_GPIO_BANK5, IH_GPIO_BASE + 128,
- METHOD_GPIO_7XX },
- { OMAP7XX_GPIO6_BASE, NULL, INT_7XX_GPIO_BANK6, IH_GPIO_BASE + 160,
- METHOD_GPIO_7XX },
-};
-#endif
-
-#ifdef CONFIG_ARCH_OMAP2
-
-static struct gpio_bank gpio_bank_242x[4] = {
- { OMAP242X_GPIO1_BASE, NULL, INT_24XX_GPIO_BANK1, IH_GPIO_BASE,
- METHOD_GPIO_24XX },
- { OMAP242X_GPIO2_BASE, NULL, INT_24XX_GPIO_BANK2, IH_GPIO_BASE + 32,
- METHOD_GPIO_24XX },
- { OMAP242X_GPIO3_BASE, NULL, INT_24XX_GPIO_BANK3, IH_GPIO_BASE + 64,
- METHOD_GPIO_24XX },
- { OMAP242X_GPIO4_BASE, NULL, INT_24XX_GPIO_BANK4, IH_GPIO_BASE + 96,
- METHOD_GPIO_24XX },
-};
-
-static struct gpio_bank gpio_bank_243x[5] = {
- { OMAP243X_GPIO1_BASE, NULL, INT_24XX_GPIO_BANK1, IH_GPIO_BASE,
- METHOD_GPIO_24XX },
- { OMAP243X_GPIO2_BASE, NULL, INT_24XX_GPIO_BANK2, IH_GPIO_BASE + 32,
- METHOD_GPIO_24XX },
- { OMAP243X_GPIO3_BASE, NULL, INT_24XX_GPIO_BANK3, IH_GPIO_BASE + 64,
- METHOD_GPIO_24XX },
- { OMAP243X_GPIO4_BASE, NULL, INT_24XX_GPIO_BANK4, IH_GPIO_BASE + 96,
- METHOD_GPIO_24XX },
- { OMAP243X_GPIO5_BASE, NULL, INT_24XX_GPIO_BANK5, IH_GPIO_BASE + 128,
- METHOD_GPIO_24XX },
-};
-
-#endif
-
#ifdef CONFIG_ARCH_OMAP3
-static struct gpio_bank gpio_bank_34xx[6] = {
- { OMAP34XX_GPIO1_BASE, NULL, INT_34XX_GPIO_BANK1, IH_GPIO_BASE,
- METHOD_GPIO_24XX },
- { OMAP34XX_GPIO2_BASE, NULL, INT_34XX_GPIO_BANK2, IH_GPIO_BASE + 32,
- METHOD_GPIO_24XX },
- { OMAP34XX_GPIO3_BASE, NULL, INT_34XX_GPIO_BANK3, IH_GPIO_BASE + 64,
- METHOD_GPIO_24XX },
- { OMAP34XX_GPIO4_BASE, NULL, INT_34XX_GPIO_BANK4, IH_GPIO_BASE + 96,
- METHOD_GPIO_24XX },
- { OMAP34XX_GPIO5_BASE, NULL, INT_34XX_GPIO_BANK5, IH_GPIO_BASE + 128,
- METHOD_GPIO_24XX },
- { OMAP34XX_GPIO6_BASE, NULL, INT_34XX_GPIO_BANK6, IH_GPIO_BASE + 160,
- METHOD_GPIO_24XX },
-};
-
struct omap3_gpio_regs {
- u32 sysconfig;
u32 irqenable1;
u32 irqenable2;
u32 wake_en;
@@ -309,25 +178,14 @@ struct omap3_gpio_regs {
static struct omap3_gpio_regs gpio_context[OMAP34XX_NR_GPIOS];
#endif
-#ifdef CONFIG_ARCH_OMAP4
-static struct gpio_bank gpio_bank_44xx[6] = {
- { OMAP44XX_GPIO1_BASE, NULL, OMAP44XX_IRQ_GPIO1, IH_GPIO_BASE,
- METHOD_GPIO_44XX },
- { OMAP44XX_GPIO2_BASE, NULL, OMAP44XX_IRQ_GPIO2, IH_GPIO_BASE + 32,
- METHOD_GPIO_44XX },
- { OMAP44XX_GPIO3_BASE, NULL, OMAP44XX_IRQ_GPIO3, IH_GPIO_BASE + 64,
- METHOD_GPIO_44XX },
- { OMAP44XX_GPIO4_BASE, NULL, OMAP44XX_IRQ_GPIO4, IH_GPIO_BASE + 96,
- METHOD_GPIO_44XX },
- { OMAP44XX_GPIO5_BASE, NULL, OMAP44XX_IRQ_GPIO5, IH_GPIO_BASE + 128,
- METHOD_GPIO_44XX },
- { OMAP44XX_GPIO6_BASE, NULL, OMAP44XX_IRQ_GPIO6, IH_GPIO_BASE + 160,
- METHOD_GPIO_44XX },
-};
+/*
+ * TODO: Cleanup gpio_bank usage as it is having information
+ * related to all instances of the device
+ */
+static struct gpio_bank *gpio_bank;
-#endif
+static int bank_width;
-static struct gpio_bank *gpio_bank;
/* TODO: Analyze removing gpio_bank_count usage from driver code */
int gpio_bank_count;
@@ -634,6 +492,9 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
u32 val;
u32 l;
+ if (!bank->dbck_flag)
+ return;
+
if (debounce < 32)
debounce = 0x01;
else if (debounce > 7936)
@@ -643,7 +504,7 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
l = 1 << get_gpio_index(gpio);
- if (cpu_is_omap44xx())
+ if (bank->method == METHOD_GPIO_44XX)
reg += OMAP4_GPIO_DEBOUNCINGTIME;
else
reg += OMAP24XX_GPIO_DEBOUNCE_VAL;
@@ -651,7 +512,7 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
__raw_writel(debounce, reg);
reg = bank->base;
- if (cpu_is_omap44xx())
+ if (bank->method == METHOD_GPIO_44XX)
reg += OMAP4_GPIO_DEBOUNCENABLE;
else
reg += OMAP24XX_GPIO_DEBOUNCE_EN;
@@ -660,12 +521,10 @@ static void _set_gpio_debounce(struct gpio_bank *bank, unsigned gpio,
if (debounce) {
val |= l;
- if (cpu_is_omap34xx() || cpu_is_omap44xx())
- clk_enable(bank->dbck);
+ clk_enable(bank->dbck);
} else {
val &= ~l;
- if (cpu_is_omap34xx() || cpu_is_omap44xx())
- clk_disable(bank->dbck);
+ clk_disable(bank->dbck);
}
bank->dbck_enable_mask = val;
@@ -1537,7 +1396,8 @@ static struct platform_device omap_mpuio_device = {
static inline void mpuio_init(void)
{
- platform_set_drvdata(&omap_mpuio_device, &gpio_bank_1610[0]);
+ struct gpio_bank *bank = get_gpio_bank(OMAP_MPUIO(0));
+ platform_set_drvdata(&omap_mpuio_device, bank);
if (platform_driver_register(&omap_mpuio_driver) == 0)
(void) platform_device_register(&omap_mpuio_device);
@@ -1642,6 +1502,13 @@ static int gpio_debounce(struct gpio_chip *chip, unsigned offset,
unsigned long flags;
bank = container_of(chip, struct gpio_bank, chip);
+
+ if (!bank->dbck) {
+ bank->dbck = clk_get(bank->dev, "dbclk");
+ if (IS_ERR(bank->dbck))
+ dev_err(bank->dev, "Could not get gpio dbck\n");
+ }
+
spin_lock_irqsave(&bank->lock, flags);
_set_gpio_debounce(bank, offset, debounce);
spin_unlock_irqrestore(&bank->lock, flags);
@@ -1670,24 +1537,6 @@ static int gpio_2irq(struct gpio_chip *chip, unsigned offset)
/*---------------------------------------------------------------------*/
-static int initialized;
-#if defined(CONFIG_ARCH_OMAP1) || defined(CONFIG_ARCH_OMAP2)
-static struct clk * gpio_ick;
-#endif
-
-#if defined(CONFIG_ARCH_OMAP2)
-static struct clk * gpio_fck;
-#endif
-
-#if defined(CONFIG_ARCH_OMAP2430)
-static struct clk * gpio5_ick;
-static struct clk * gpio5_fck;
-#endif
-
-#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
-static struct clk *gpio_iclks[OMAP34XX_NR_GPIOS];
-#endif
-
static void __init omap_gpio_show_rev(struct gpio_bank *bank)
{
u32 rev;
@@ -1710,6 +1559,19 @@ static void __init omap_gpio_show_rev(struct gpio_bank *bank)
*/
static struct lock_class_key gpio_lock_class;
+static inline int init_gpio_info(struct platform_device *pdev)
+{
+ /* TODO: Analyze removing gpio_bank_count usage from driver code */
+ gpio_bank = kzalloc(gpio_bank_count * sizeof(struct gpio_bank),
+ GFP_KERNEL);
+ if (!gpio_bank) {
+ dev_err(&pdev->dev, "Memory alloc failed for gpio_bank\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+/* TODO: Cleanup cpu_is_* checks */
static void omap_gpio_mod_init(struct gpio_bank *bank, int id)
{
if (cpu_class_is_omap2()) {
@@ -1773,16 +1635,9 @@ static void omap_gpio_mod_init(struct gpio_bank *bank, int id)
static void __init omap_gpio_chip_init(struct gpio_bank *bank)
{
- int j, bank_width = 16;
+ int j;
static int gpio;
- if (cpu_is_omap7xx() && bank->method == METHOD_GPIO_7XX)
- bank_width = 32; /* 7xx has 32-bit GPIOs */
-
- if ((bank->method == METHOD_GPIO_24XX) ||
- (bank->method == METHOD_GPIO_44XX))
- bank_width = 32;
-
bank->mod_usage = 0;
/*
* REVISIT eventually switch from OMAP-specific gpio structs
@@ -1826,139 +1681,68 @@ static void __init omap_gpio_chip_init(struct gpio_bank *bank)
set_irq_data(bank->irq, bank);
}
-static int __init _omap_gpio_init(void)
+static int __devinit omap_gpio_probe(struct platform_device *pdev)
{
- int i;
+ static int gpio_init_done;
+ struct omap_gpio_platform_data *pdata;
+ struct resource *res;
+ int id;
struct gpio_bank *bank;
- int bank_size = SZ_8K; /* Module 4KB + L4 4KB except on omap1 */
- char clk_name[11];
- initialized = 1;
+ if (!pdev->dev.platform_data)
+ return -EINVAL;
-#if defined(CONFIG_ARCH_OMAP1)
- if (cpu_is_omap15xx()) {
- gpio_ick = clk_get(NULL, "arm_gpio_ck");
- if (IS_ERR(gpio_ick))
- printk("Could not get arm_gpio_ck\n");
- else
- clk_enable(gpio_ick);
- }
-#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");
- else
- clk_enable(gpio_ick);
- gpio_fck = clk_get(NULL, "gpios_fck");
- if (IS_ERR(gpio_fck))
- printk("Could not get gpios_fck\n");
- else
- clk_enable(gpio_fck);
+ pdata = pdev->dev.platform_data;
- /*
- * On 2430 & 3430 GPIO 5 uses CORE L4 ICLK
- */
-#if defined(CONFIG_ARCH_OMAP2430)
- if (cpu_is_omap2430()) {
- gpio5_ick = clk_get(NULL, "gpio5_ick");
- if (IS_ERR(gpio5_ick))
- printk("Could not get gpio5_ick\n");
- else
- clk_enable(gpio5_ick);
- gpio5_fck = clk_get(NULL, "gpio5_fck");
- if (IS_ERR(gpio5_fck))
- printk("Could not get gpio5_fck\n");
- else
- clk_enable(gpio5_fck);
- }
-#endif
- }
-#endif
+ if (!gpio_init_done) {
+ int ret;
-#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);
- if (IS_ERR(gpio_iclks[i]))
- printk(KERN_ERR "Could not get %s\n", clk_name);
- else
- clk_enable(gpio_iclks[i]);
- }
+ ret = init_gpio_info(pdev);
+ if (ret)
+ return ret;
}
-#endif
+ id = pdev->id;
+ bank = &gpio_bank[id];
-#ifdef CONFIG_ARCH_OMAP15XX
- if (cpu_is_omap15xx()) {
- gpio_bank_count = 2;
- gpio_bank = gpio_bank_1510;
- bank_size = SZ_2K;
- }
-#endif
-#if defined(CONFIG_ARCH_OMAP16XX)
- if (cpu_is_omap16xx()) {
- gpio_bank_count = 5;
- gpio_bank = gpio_bank_1610;
- bank_size = SZ_2K;
- }
-#endif
-#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
- if (cpu_is_omap7xx()) {
- gpio_bank_count = 7;
- gpio_bank = gpio_bank_7xx;
- bank_size = SZ_2K;
- }
-#endif
-#ifdef CONFIG_ARCH_OMAP2
- if (cpu_is_omap242x()) {
- gpio_bank_count = 4;
- gpio_bank = gpio_bank_242x;
- }
- if (cpu_is_omap243x()) {
- gpio_bank_count = 5;
- gpio_bank = gpio_bank_243x;
- }
-#endif
-#ifdef CONFIG_ARCH_OMAP3
- if (cpu_is_omap34xx()) {
- gpio_bank_count = OMAP34XX_NR_GPIOS;
- gpio_bank = gpio_bank_34xx;
- }
-#endif
-#ifdef CONFIG_ARCH_OMAP4
- if (cpu_is_omap44xx()) {
- gpio_bank_count = OMAP34XX_NR_GPIOS;
- gpio_bank = gpio_bank_44xx;
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (unlikely(!res)) {
+ dev_err(&pdev->dev, "GPIO Bank %i Invalid IRQ resource\n", id);
+ return -ENODEV;
}
-#endif
- for (i = 0; i < gpio_bank_count; i++) {
- bank = &gpio_bank[i];
- spin_lock_init(&bank->lock);
+ bank->irq = res->start;
+ bank->virtual_irq_start = pdata->virtual_irq_start;
+ bank->method = pdata->bank_type;
+ bank->dev = &pdev->dev;
+ bank->dbck_flag = pdata->dbck_flag;
+ bank_width = pdata->bank_width;
- /* Static mapping, never released */
- bank->base = ioremap(bank->pbase, bank_size);
- if (!bank->base) {
- printk(KERN_ERR "Could not ioremap gpio bank%i\n", i);
- continue;
- }
+ spin_lock_init(&bank->lock);
- omap_gpio_mod_init(bank, i);
- omap_gpio_chip_init(bank);
+ /* Static mapping, never released */
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (unlikely(!res)) {
+ dev_err(&pdev->dev, "GPIO Bank %i Invalid mem resource\n", id);
+ return -ENODEV;
+ }
- 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))
- printk(KERN_ERR "Could not get %s\n", clk_name);
- }
+ bank->base = ioremap(res->start, resource_size(res));
+ if (!bank->base) {
+ dev_err(&pdev->dev, "Could not ioremap gpio bank%i\n", id);
+ return -ENOMEM;
}
+ pm_runtime_enable(bank->dev);
+ pm_runtime_get_sync(bank->dev);
+
+ omap_gpio_mod_init(bank, id);
+ omap_gpio_chip_init(bank);
omap_gpio_show_rev(bank);
+ if (!gpio_init_done)
+ gpio_init_done = 1;
+
return 0;
}
@@ -2252,8 +2036,6 @@ void omap_gpio_save_context(void)
/* saving banks from 2-6 only since GPIO1 is in WKUP */
for (i = 1; i < gpio_bank_count; i++) {
struct gpio_bank *bank = &gpio_bank[i];
- gpio_context[i].sysconfig =
- __raw_readl(bank->base + OMAP24XX_GPIO_SYSCONFIG);
gpio_context[i].irqenable1 =
__raw_readl(bank->base + OMAP24XX_GPIO_IRQENABLE1);
gpio_context[i].irqenable2 =
@@ -2284,8 +2066,6 @@ void omap_gpio_restore_context(void)
for (i = 1; i < gpio_bank_count; i++) {
struct gpio_bank *bank = &gpio_bank[i];
- __raw_writel(gpio_context[i].sysconfig,
- bank->base + OMAP24XX_GPIO_SYSCONFIG);
__raw_writel(gpio_context[i].irqenable1,
bank->base + OMAP24XX_GPIO_IRQENABLE1);
__raw_writel(gpio_context[i].irqenable2,
@@ -2310,25 +2090,28 @@ void omap_gpio_restore_context(void)
}
#endif
+static struct platform_driver omap_gpio_driver = {
+ .probe = omap_gpio_probe,
+ .driver = {
+ .name = "omap_gpio",
+ },
+};
+
/*
- * This may get called early from board specific init
- * for boards that have interrupts routed via FPGA.
+ * gpio driver register needs to be done before
+ * machine_init functions access gpio APIs.
+ * Hence omap_gpio_drv_reg() is a postcore_initcall.
*/
-int __init omap_gpio_init(void)
+static int __init omap_gpio_drv_reg(void)
{
- if (!initialized)
- return _omap_gpio_init();
- else
- return 0;
+ return platform_driver_register(&omap_gpio_driver);
}
+postcore_initcall(omap_gpio_drv_reg);
static int __init omap_gpio_sysinit(void)
{
int ret = 0;
- if (!initialized)
- ret = _omap_gpio_init();
-
mpuio_init();
#if defined(CONFIG_ARCH_OMAP16XX) || defined(CONFIG_ARCH_OMAP2PLUS)
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