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gpio/omap: cleanup omap_gpio_mod_init function 

With register offsets now defined for respective OMAP versions we can get rid
of cpu_class_* checks. This function now has common initialization code for
all OMAP versions. Initialization specific to OMAP16xx has been moved within
omap16xx_gpio_init().

Signed-off-by: Tarun Kanti DebBarma <tarun.kanti@ti.com>
Signed-off-by: Charulatha V <charu@ti.com>
Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Tarun Kanti DebBarma 2011-09-13 15:12:05 +05:30
parent 5e571f38f6
commit ab985f0f7c
2 changed files with 56 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
arch/arm/mach-omap1/gpio16xx.c
View File

@ -24,6 +24,9 @@
#define OMAP1610_GPIO4_BASE 0xfffbbc00
#define OMAP1_MPUIO_VBASE OMAP1_MPUIO_BASE
/* smart idle, enable wakeup */
#define SYSCONFIG_WORD 0x14
/* mpu gpio */
static struct __initdata resource omap16xx_mpu_gpio_resources[] = {
{
@ -218,12 +221,42 @@ static struct __initdata platform_device * omap16xx_gpio_dev[] = {
static int __init omap16xx_gpio_init(void)
{
int i;
void __iomem *base;
struct resource *res;
struct platform_device *pdev;
struct omap_gpio_platform_data *pdata;
if (!cpu_is_omap16xx())
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++)
for (i = 0; i < ARRAY_SIZE(omap16xx_gpio_dev); i++) {
pdev = omap16xx_gpio_dev[i];
pdata = pdev->dev.platform_data;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (unlikely(!res)) {
dev_err(&pdev->dev, "Invalid mem resource.\n");
return -ENODEV;
}
base = ioremap(res->start, resource_size(res));
if (unlikely(!base)) {
dev_err(&pdev->dev, "ioremap failed.\n");
return -ENOMEM;
}
__raw_writel(SYSCONFIG_WORD, base + OMAP1610_GPIO_SYSCONFIG);
iounmap(base);
/*
* Enable system clock for GPIO module.
* The CAM_CLK_CTRL *is* really the right place.
*/
omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
ULPD_CAM_CLK_CTRL);
platform_device_register(omap16xx_gpio_dev[i]);
}
return 0;
}

75
drivers/gpio/gpio-omap.c
View File

@ -610,7 +610,6 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
if (!(isr & 1))
continue;
#ifdef CONFIG_ARCH_OMAP1
/*
* Some chips can't respond to both rising and falling
* at the same time. If this irq was requested with
@ -620,7 +619,6 @@ static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
*/
if (bank->toggle_mask & (1 << gpio_index))
_toggle_gpio_edge_triggering(bank, gpio_index);
#endif
generic_handle_irq(gpio_irq);
}
@ -898,62 +896,30 @@ static void __init omap_gpio_show_rev(struct gpio_bank *bank)
*/
static struct lock_class_key gpio_lock_class;
/* TODO: Cleanup cpu_is_* checks */
static void omap_gpio_mod_init(struct gpio_bank *bank)
{
if (cpu_class_is_omap2()) {
if (cpu_is_omap44xx()) {
__raw_writel(0xffffffff, bank->base +
OMAP4_GPIO_IRQSTATUSCLR0);
__raw_writel(0x00000000, bank->base +
OMAP4_GPIO_DEBOUNCENABLE);
/* Initialize interface clk ungated, module enabled */
__raw_writel(0, bank->base + OMAP4_GPIO_CTRL);
} else if (cpu_is_omap34xx()) {
__raw_writel(0x00000000, bank->base +
OMAP24XX_GPIO_IRQENABLE1);
__raw_writel(0xffffffff, bank->base +
OMAP24XX_GPIO_IRQSTATUS1);
__raw_writel(0x00000000, bank->base +
OMAP24XX_GPIO_DEBOUNCE_EN);
void __iomem *base = bank->base;
u32 l = 0xffffffff;
/* Initialize interface clk ungated, module enabled */
__raw_writel(0, bank->base + OMAP24XX_GPIO_CTRL);
}
} else if (cpu_class_is_omap1()) {
if (bank_is_mpuio(bank)) {
__raw_writew(0xffff, bank->base +
OMAP_MPUIO_GPIO_MASKIT / bank->stride);
mpuio_init(bank);
}
if (cpu_is_omap15xx() && bank->method == METHOD_GPIO_1510) {
__raw_writew(0xffff, bank->base
+ OMAP1510_GPIO_INT_MASK);
__raw_writew(0x0000, bank->base
+ OMAP1510_GPIO_INT_STATUS);
}
if (cpu_is_omap16xx() && bank->method == METHOD_GPIO_1610) {
__raw_writew(0x0000, bank->base
+ OMAP1610_GPIO_IRQENABLE1);
__raw_writew(0xffff, bank->base
+ OMAP1610_GPIO_IRQSTATUS1);
__raw_writew(0x0014, bank->base
+ OMAP1610_GPIO_SYSCONFIG);
if (bank->width == 16)
l = 0xffff;
/*
* Enable system clock for GPIO module.
* The CAM_CLK_CTRL *is* really the right place.
*/
omap_writel(omap_readl(ULPD_CAM_CLK_CTRL) | 0x04,
ULPD_CAM_CLK_CTRL);
}
if (cpu_is_omap7xx() && bank->method == METHOD_GPIO_7XX) {
__raw_writel(0xffffffff, bank->base
+ OMAP7XX_GPIO_INT_MASK);
__raw_writel(0x00000000, bank->base
+ OMAP7XX_GPIO_INT_STATUS);
}
if (bank_is_mpuio(bank)) {
__raw_writel(l, bank->base + bank->regs->irqenable);
return;
}
_gpio_rmw(base, bank->regs->irqenable, l, bank->regs->irqenable_inv);
_gpio_rmw(base, bank->regs->irqstatus, l,
bank->regs->irqenable_inv == false);
_gpio_rmw(base, bank->regs->irqenable, l, bank->regs->debounce_en != 0);
_gpio_rmw(base, bank->regs->irqenable, l, bank->regs->ctrl != 0);
if (bank->regs->debounce_en)
_gpio_rmw(base, bank->regs->debounce_en, 0, 1);
/* Initialize interface clk ungated, module enabled */
if (bank->regs->ctrl)
_gpio_rmw(base, bank->regs->ctrl, 0, 1);
}
static __init void
@ -1104,6 +1070,9 @@ static int __devinit omap_gpio_probe(struct platform_device *pdev)
pm_runtime_enable(bank->dev);
pm_runtime_get_sync(bank->dev);
if (bank_is_mpuio(bank))
mpuio_init(bank);
omap_gpio_mod_init(bank);
omap_gpio_chip_init(bank);
omap_gpio_show_rev(bank);