[ARM] 5575/1: ep93xx: Show gpio interrupt type in debugfs output.

ep93xx: Show gpio interrupt type in debugfs output.

EP93xx uses a private implementation for the debugfs output.
Modify this output so it includes the interrupt type when the
gpio is configured as an interrupt

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Acked-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 51 insertions, 5 deletions

diff --git a/arch/arm/mach-ep93xx/gpio.c b/arch/arm/mach-ep93xx/gpio.c
index 7b7a564916f..2d83d69e2ee 100644
--- a/arch/arm/mach-ep93xx/gpio.c
+++ b/arch/arm/mach-ep93xx/gpio.c
@@ -111,15 +111,61 @@ 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)                      \