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ARM: at91: switch gpio clock to clkdev

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Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD
2011-11-13 13:00:58 +08:00
committed by Arnd Bergmann
parent ed20178d62
commit 619d4a4b40
9 changed files with 43 additions and 37 deletions
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23
arch/arm/mach-at91/gpio.c
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@@ -31,6 +31,7 @@ struct at91_gpio_chip {
struct at91_gpio_chip *next; /* Bank sharing same clock */
struct at91_gpio_bank *bank; /* Bank definition */
void __iomem *regbase; /* Base of register bank */
struct clk *clock; /* associated clock */
};
#define to_at91_gpio_chip(c) container_of(c, struct at91_gpio_chip, chip)
@@ -58,11 +59,11 @@ static int at91_gpiolib_direction_input(struct gpio_chip *chip,
}
static struct at91_gpio_chip gpio_chip[] = {
AT91_GPIO_CHIP("A", 0x00 + PIN_BASE, 32),
AT91_GPIO_CHIP("B", 0x20 + PIN_BASE, 32),
AT91_GPIO_CHIP("C", 0x40 + PIN_BASE, 32),
AT91_GPIO_CHIP("D", 0x60 + PIN_BASE, 32),
AT91_GPIO_CHIP("E", 0x80 + PIN_BASE, 32),
AT91_GPIO_CHIP("pioA", 0x00 + PIN_BASE, 32),
AT91_GPIO_CHIP("pioB", 0x20 + PIN_BASE, 32),
AT91_GPIO_CHIP("pioC", 0x40 + PIN_BASE, 32),
AT91_GPIO_CHIP("pioD", 0x60 + PIN_BASE, 32),
AT91_GPIO_CHIP("pioE", 0x80 + PIN_BASE, 32),
};
static int gpio_banks;
@@ -302,7 +303,7 @@ void at91_gpio_suspend(void)
__raw_writel(wakeups[i], pio + PIO_IER);
if (!wakeups[i])
clk_disable(gpio_chip[i].bank->clock);
clk_disable(gpio_chip[i].clock);
else {
#ifdef CONFIG_PM_DEBUG
printk(KERN_DEBUG "GPIO-%c may wake for %08x\n", 'A'+i, wakeups[i]);
@@ -319,7 +320,7 @@ void at91_gpio_resume(void)
void __iomem *pio = gpio_chip[i].regbase;
if (!wakeups[i])
clk_enable(gpio_chip[i].bank->clock);
clk_enable(gpio_chip[i].clock);
__raw_writel(wakeups[i], pio + PIO_IDR);
__raw_writel(backups[i], pio + PIO_IER);
@@ -621,8 +622,14 @@ void __init at91_gpio_init(struct at91_gpio_bank *data, int nr_banks)
continue;
}
at91_gpio->clock = clk_get_sys(NULL, at91_gpio->chip.label);
if (!at91_gpio->clock) {
pr_err("at91_gpio.%d, failed to get clock, ignoring.\n", i);
continue;
}
/* enable PIO controller's clock */
clk_enable(at91_gpio->bank->clock);
clk_enable(at91_gpio->clock);
/* AT91SAM9263_ID_PIOCDE groups PIOC, PIOD, PIOE */
if (last && last->bank->id == at91_gpio->bank->id)