+/*--------------------------------------------------------------------------*/
+
+#ifdef CONFIG_DEBUG_FS
+
+#include <linux/seq_file.h>
+
+/*
+ * This shows more info than the generic gpio dump code:
+ * pullups, deglitching, open drain drive.
+ */
+static void pio_bank_show(struct seq_file *s, struct gpio_chip *chip)
+{
+ struct pio_device *pio = container_of(chip, struct pio_device, chip);
+ u32 psr, osr, imr, pdsr, pusr, ifsr, mdsr;
+ unsigned i;
+ u32 mask;
+ char bank;
+
+ psr = pio_readl(pio, PSR);
+ osr = pio_readl(pio, OSR);
+ imr = pio_readl(pio, IMR);
+ pdsr = pio_readl(pio, PDSR);
+ pusr = pio_readl(pio, PUSR);
+ ifsr = pio_readl(pio, IFSR);
+ mdsr = pio_readl(pio, MDSR);
+
+ bank = 'A' + pio->pdev->id;
+
+ for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
+ const char *label;
+
+ label = gpiochip_is_requested(chip, i);
+ if (!label)
+ continue;
+
+ seq_printf(s, " gpio-%-3d P%c%-2d (%-12s) %s %s %s",
+ chip->base + i, bank, i,
+ label,
+ (osr & mask) ? "out" : "in ",
+ (mask & pdsr) ? "hi" : "lo",
+ (mask & pusr) ? " " : "up");
+ if (ifsr & mask)
+ seq_printf(s, " deglitch");
+ if ((osr & mdsr) & mask)
+ seq_printf(s, " open-drain");
+ if (imr & mask)
+ seq_printf(s, " irq-%d edge-both",
+ gpio_to_irq(chip->base + i));
+ seq_printf(s, "\n");
+ }
+}
+
+#else
+#define pio_bank_show NULL
+#endif
+
+