diff options
Diffstat (limited to 'arch/arm/mach-ep93xx/gpio.c')
| -rw-r--r-- | arch/arm/mach-ep93xx/gpio.c | 65 |
1 files changed, 56 insertions, 9 deletions
diff --git a/arch/arm/mach-ep93xx/gpio.c b/arch/arm/mach-ep93xx/gpio.c index 482cf3d2fbc..1ea8871e03a 100644 --- a/arch/arm/mach-ep93xx/gpio.c +++ b/arch/arm/mach-ep93xx/gpio.c @@ -17,15 +17,16 @@ #include <linux/module.h> #include <linux/seq_file.h> #include <linux/io.h> +#include <linux/gpio.h> +#include <linux/irq.h> -#include <mach/ep93xx-regs.h> -#include <asm/gpio.h> +#include <mach/hardware.h> struct ep93xx_gpio_chip { struct gpio_chip chip; - unsigned int data_reg; - unsigned int data_dir_reg; + void __iomem *data_reg; + void __iomem *data_dir_reg; }; #define to_ep93xx_gpio_chip(c) container_of(c, struct ep93xx_gpio_chip, chip) @@ -111,15 +112,61 @@ static void ep93xx_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip) { struct ep93xx_gpio_chip *ep93xx_chip = to_ep93xx_gpio_chip(chip); u8 data_reg, data_dir_reg; - int i; + int gpio, i; data_reg = __raw_readb(ep93xx_chip->data_reg); data_dir_reg = __raw_readb(ep93xx_chip->data_dir_reg); - for (i = 0; i < chip->ngpio; i++) - seq_printf(s, "GPIO %s%d: %s %s\n", chip->label, i, - (data_reg & (1 << i)) ? "set" : "clear", - (data_dir_reg & (1 << i)) ? "out" : "in"); + gpio = ep93xx_chip->chip.base; + for (i = 0; i < chip->ngpio; i++, gpio++) { + int is_out = data_dir_reg & (1 << i); + + seq_printf(s, " %s%d gpio-%-3d (%-12s) %s %s", + chip->label, i, gpio, + gpiochip_is_requested(chip, i) ? : "", + is_out ? "out" : "in ", + (data_reg & (1 << i)) ? "hi" : "lo"); + + if (!is_out) { + int irq = gpio_to_irq(gpio); + struct irq_desc *desc = irq_desc + irq; + + if (irq >= 0 && desc->action) { + char *trigger; + + switch (desc->status & IRQ_TYPE_SENSE_MASK) { + case IRQ_TYPE_NONE: + trigger = "(default)"; + break; + case IRQ_TYPE_EDGE_FALLING: + trigger = "edge-falling"; + break; + case IRQ_TYPE_EDGE_RISING: + trigger = "edge-rising"; + break; + case IRQ_TYPE_EDGE_BOTH: + trigger = "edge-both"; + break; + case IRQ_TYPE_LEVEL_HIGH: + trigger = "level-high"; + break; + case IRQ_TYPE_LEVEL_LOW: + trigger = "level-low"; + break; + default: + trigger = "?trigger?"; + break; + } + + seq_printf(s, " irq-%d %s%s", + irq, trigger, + (desc->status & IRQ_WAKEUP) + ? " wakeup" : ""); + } + } + + seq_printf(s, "\n"); + } } #define EP93XX_GPIO_BANK(name, dr, ddr, base_gpio) \ |