-
-
-#ifdef CONFIG_DEBUG_FS
-
-#include <linux/debugfs.h>
-#include <linux/seq_file.h>
-
-static int gpio_is_input(struct gpio_bank *bank, int mask)
-{
- void __iomem *reg = bank->base;
-
- switch (bank->method) {
- case METHOD_MPUIO:
- reg += OMAP_MPUIO_IO_CNTL;
- break;
- case METHOD_GPIO_1510:
- reg += OMAP1510_GPIO_DIR_CONTROL;
- break;
- case METHOD_GPIO_1610:
- reg += OMAP1610_GPIO_DIRECTION;
- break;
- case METHOD_GPIO_730:
- reg += OMAP730_GPIO_DIR_CONTROL;
- break;
- case METHOD_GPIO_24XX:
- reg += OMAP24XX_GPIO_OE;
- break;
- }
- return __raw_readl(reg) & mask;
-}
-
-
-static int dbg_gpio_show(struct seq_file *s, void *unused)
-{
- unsigned i, j, gpio;
-
- for (i = 0, gpio = 0; i < gpio_bank_count; i++) {
- struct gpio_bank *bank = gpio_bank + i;
- unsigned bankwidth = 16;
- u32 mask = 1;
-
- if (bank_is_mpuio(bank))
- gpio = OMAP_MPUIO(0);
- else if (cpu_class_is_omap2() || cpu_is_omap730())
- bankwidth = 32;
-
- for (j = 0; j < bankwidth; j++, gpio++, mask <<= 1) {
- unsigned irq, value, is_in, irqstat;
- const char *label;
-
- label = gpiochip_is_requested(&bank->chip, j);
- if (!label)
- continue;
-
- irq = bank->virtual_irq_start + j;
- value = omap_get_gpio_datain(gpio);
- is_in = gpio_is_input(bank, mask);
-
- if (bank_is_mpuio(bank))
- seq_printf(s, "MPUIO %2d ", j);
- else
- seq_printf(s, "GPIO %3d ", gpio);
- seq_printf(s, "(%10s): %s %s",
- label,
- is_in ? "in " : "out",
- value ? "hi" : "lo");
-
-/* FIXME for at least omap2, show pullup/pulldown state */
-
- irqstat = irq_desc[irq].status;
- if (is_in && ((bank->suspend_wakeup & mask)
- || irqstat & IRQ_TYPE_SENSE_MASK)) {
- char *trigger = NULL;
-
- switch (irqstat & IRQ_TYPE_SENSE_MASK) {
- case IRQ_TYPE_EDGE_FALLING:
- trigger = "falling";
- break;
- case IRQ_TYPE_EDGE_RISING:
- trigger = "rising";
- break;
- case IRQ_TYPE_EDGE_BOTH:
- trigger = "bothedge";
- break;
- case IRQ_TYPE_LEVEL_LOW:
- trigger = "low";
- break;
- case IRQ_TYPE_LEVEL_HIGH:
- trigger = "high";
- break;
- case IRQ_TYPE_NONE:
- trigger = "(?)";
- break;
- }
- seq_printf(s, ", irq-%d %-8s%s",
- irq, trigger,
- (bank->suspend_wakeup & mask)
- ? " wakeup" : "");
- }
- seq_printf(s, "\n");
- }
-
- if (bank_is_mpuio(bank)) {
- seq_printf(s, "\n");
- gpio = 0;
- }
- }
- return 0;
-}
-
-static int dbg_gpio_open(struct inode *inode, struct file *file)
-{
- return single_open(file, dbg_gpio_show, &inode->i_private);
-}
-
-static const struct file_operations debug_fops = {
- .open = dbg_gpio_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int __init omap_gpio_debuginit(void)
-{
- (void) debugfs_create_file("omap_gpio", S_IRUGO,
- NULL, NULL, &debug_fops);
- return 0;
-}
-late_initcall(omap_gpio_debuginit);
-#endif