Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6 into devel
Conflicts:
arch/arm/mach-at91/gpio.c
diff --git a/arch/arm/mach-at91/gpio.c b/arch/arm/mach-at91/gpio.c
index 028e4f7..f2236f0 100644
--- a/arch/arm/mach-at91/gpio.c
+++ b/arch/arm/mach-at91/gpio.c
@@ -437,7 +437,68 @@
/*--------------------------------------------------------------------------*/
-/* This lock class tells lockdep that GPIO irqs are in a different
+#ifdef CONFIG_DEBUG_FS
+
+static int at91_gpio_show(struct seq_file *s, void *unused)
+{
+ int bank, j;
+
+ /* print heading */
+ seq_printf(s, "Pin\t");
+ for (bank = 0; bank < gpio_banks; bank++) {
+ seq_printf(s, "PIO%c\t", 'A' + bank);
+ };
+ seq_printf(s, "\n\n");
+
+ /* print pin status */
+ for (j = 0; j < 32; j++) {
+ seq_printf(s, "%i:\t", j);
+
+ for (bank = 0; bank < gpio_banks; bank++) {
+ unsigned pin = PIN_BASE + (32 * bank) + j;
+ void __iomem *pio = pin_to_controller(pin);
+ unsigned mask = pin_to_mask(pin);
+
+ if (__raw_readl(pio + PIO_PSR) & mask)
+ seq_printf(s, "GPIO:%s", __raw_readl(pio + PIO_PDSR) & mask ? "1" : "0");
+ else
+ seq_printf(s, "%s", __raw_readl(pio + PIO_ABSR) & mask ? "B" : "A");
+
+ seq_printf(s, "\t");
+ }
+
+ seq_printf(s, "\n");
+ }
+
+ return 0;
+}
+
+static int at91_gpio_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, at91_gpio_show, NULL);
+}
+
+static const struct file_operations at91_gpio_operations = {
+ .open = at91_gpio_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init at91_gpio_debugfs_init(void)
+{
+ /* /sys/kernel/debug/at91_gpio */
+ (void) debugfs_create_file("at91_gpio", S_IFREG | S_IRUGO, NULL, NULL, &at91_gpio_operations);
+ return 0;
+}
+postcore_initcall(at91_gpio_debugfs_init);
+
+#endif
+
+/*--------------------------------------------------------------------------*/
+
+/*
+ * This lock class tells lockdep that GPIO irqs are in a different
* category than their parents, so it won't report false recursion.
*/
static struct lock_class_key gpio_lock_class;
@@ -456,9 +517,6 @@
unsigned id = this->bank->id;
unsigned i;
- /* enable PIO controller's clock */
- clk_enable(this->bank->clock);
-
__raw_writel(~0, this->regbase + PIO_IDR);
for (i = 0, pin = this->chip.base; i < 32; i++, pin++) {
@@ -589,6 +647,9 @@
at91_gpio->regbase = at91_gpio->bank->offset +
(void __iomem *)AT91_VA_BASE_SYS;
+ /* enable PIO controller's clock */
+ clk_enable(at91_gpio->bank->clock);
+
/* AT91SAM9263_ID_PIOCDE groups PIOC, PIOD, PIOE */
if (last && last->bank->id == at91_gpio->bank->id)
last->next = at91_gpio;