diff options
Diffstat (limited to 'drivers/gpio/gpio-ep93xx.c')
| -rw-r--r-- | drivers/gpio/gpio-ep93xx.c | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c index 1248d83f860b..d45d8ac3b525 100644 --- a/drivers/gpio/gpio-ep93xx.c +++ b/drivers/gpio/gpio-ep93xx.c @@ -17,8 +17,6 @@ #include <linux/slab.h> #include <linux/gpio/driver.h> #include <linux/bitops.h> -/* FIXME: this is here for gpio_to_irq() - get rid of this! */ -#include <linux/gpio.h> #define EP93XX_GPIO_F_INT_STATUS 0x5c #define EP93XX_GPIO_A_INT_STATUS 0xa0 @@ -30,6 +28,15 @@ /* Maximum value for irq capable line identifiers */ #define EP93XX_GPIO_LINE_MAX_IRQ 23 +/* + * IRQ numbers used by this driver is 64 ..87 + * + * Map GPIO A0..A7 (0..7) to irq 64..71, + * B0..B7 (7..15) to irq 72..79, and + * F0..F7 (16..24) to irq 80..87. + */ +static unsigned int ep93xx_gpio_irq_base[3] = { 64, 72, 80 }; + struct ep93xx_gpio { void __iomem *base; struct gpio_chip gc[8]; @@ -112,13 +119,13 @@ static void ep93xx_gpio_ab_irq_handler(struct irq_desc *desc) stat = readb(epg->base + EP93XX_GPIO_A_INT_STATUS); for_each_set_bit(offset, &stat, 8) { - int gpio_irq = gpio_to_irq(0) + offset; + int gpio_irq = ep93xx_gpio_irq_base[0] + offset; generic_handle_irq(gpio_irq); } stat = readb(epg->base + EP93XX_GPIO_B_INT_STATUS); for_each_set_bit(offset, &stat, 8) { - int gpio_irq = gpio_to_irq(8) + offset; + int gpio_irq = ep93xx_gpio_irq_base[1] + offset; generic_handle_irq(gpio_irq); } @@ -130,12 +137,12 @@ static void ep93xx_gpio_f_irq_handler(struct irq_desc *desc) /* * map discontiguous hw irq range to continuous sw irq range: * - * IRQ_EP93XX_GPIO{0..7}MUX -> gpio_to_irq(EP93XX_GPIO_LINE_F({0..7}) + * IRQ_EP93XX_GPIO{0..7}MUX -> EP93XX_GPIO_LINE_F{0..7} */ struct irq_chip *irqchip = irq_desc_get_chip(desc); unsigned int irq = irq_desc_get_irq(desc); int port_f_idx = ((irq + 1) & 7) ^ 4; /* {19..22,47..50} -> {0..7} */ - int gpio_irq = gpio_to_irq(16) + port_f_idx; + int gpio_irq = ep93xx_gpio_irq_base[2] + port_f_idx; chained_irq_enter(irqchip, desc); generic_handle_irq(gpio_irq); @@ -268,27 +275,24 @@ static void ep93xx_gpio_init_irq(struct platform_device *pdev, int i; /* The A bank */ - for (gpio_irq = gpio_to_irq(0); - gpio_irq < gpio_to_irq(8); - gpio_irq++) { + for (i = 0; i < 8; i++) { + gpio_irq = ep93xx_gpio_irq_base[0] + i; irq_set_chip_data(gpio_irq, &epg->gc[0]); irq_set_chip_and_handler(gpio_irq, &ep93xx_gpio_irq_chip, handle_level_irq); irq_clear_status_flags(gpio_irq, IRQ_NOREQUEST); } /* The B bank */ - for (gpio_irq = gpio_to_irq(8); - gpio_irq < gpio_to_irq(16); - gpio_irq++) { + for (i = 0; i < 8; i++) { + gpio_irq = ep93xx_gpio_irq_base[1] + i; irq_set_chip_data(gpio_irq, &epg->gc[1]); irq_set_chip_and_handler(gpio_irq, &ep93xx_gpio_irq_chip, handle_level_irq); irq_clear_status_flags(gpio_irq, IRQ_NOREQUEST); } /* The F bank */ - for (gpio_irq = gpio_to_irq(16); - gpio_irq < gpio_to_irq(EP93XX_GPIO_LINE_MAX_IRQ); - gpio_irq++) { + for (i = 0; i < 8; i++) { + gpio_irq = ep93xx_gpio_irq_base[2] + i; irq_set_chip_data(gpio_irq, &epg->gc[5]); irq_set_chip_and_handler(gpio_irq, &ep93xx_gpio_irq_chip, handle_level_irq); @@ -350,19 +354,15 @@ static int ep93xx_gpio_set_config(struct gpio_chip *gc, unsigned offset, return 0; } -/* - * Map GPIO A0..A7 (0..7) to irq 64..71, - * B0..B7 (7..15) to irq 72..79, and - * F0..F7 (16..24) to irq 80..87. - */ -static int ep93xx_gpio_to_irq(struct gpio_chip *chip, unsigned offset) +static int ep93xx_gpio_to_irq(struct gpio_chip *gc, unsigned offset) { - int gpio = chip->base + offset; + int port = ep93xx_gpio_port(gc); - if (gpio > EP93XX_GPIO_LINE_MAX_IRQ) + /* Those are the ports supporting IRQ */ + if (port != 0 && port != 1 && port != 5) return -EINVAL; - return 64 + gpio; + return ep93xx_gpio_irq_base[port] + offset; } static int ep93xx_gpio_add_bank(struct gpio_chip *gc, struct device *dev, |