pinctrl: amd: Add Z-state wake control bits

GPIO registers include Bit 27 for WakeCntrlZ used to enable wake in
Z state. Hence add Z-state wake control bits to debugfs output to
debug and analyze Z-states problems.
Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Suggested-by: Mario Limonciello <mario.limonciello@amd.com>
Tested-by: Guruvendra Punugupati <Guruvendra.Punugupati@amd.com>
Link: https://lore.kernel.org/r/20221208093704.1151928-1-Basavaraj.Natikar@amd.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-amd.c

@@ -218,6 +218,7 @@ static void amd_gpio_dbg_show(struct seq_file *s, struct gpio_chip *gc)
 	char *orientation;
 	char debounce_value[40];
 	char *debounce_enable;
+	char *wake_cntrlz;
 
 	for (bank = 0; bank < gpio_dev->hwbank_num; bank++) {
 		unsigned int time = 0;
@@ -305,6 +306,12 @@ static void amd_gpio_dbg_show(struct seq_file *s, struct gpio_chip *gc)
 				wake_cntrl2 = " ∅";
 			seq_printf(s, "S4/S5 %s| ", wake_cntrl2);
 
+			if (pin_reg & BIT(WAKECNTRL_Z_OFF))
+				wake_cntrlz = "⏰";
+			else
+				wake_cntrlz = " ∅";
+			seq_printf(s, "Z %s| ", wake_cntrlz);
+
 			if (pin_reg & BIT(PULL_UP_ENABLE_OFF)) {
 				pull_up_enable = "+";
 				if (pin_reg & BIT(PULL_UP_SEL_OFF))

drivers/pinctrl/pinctrl-amd.h

@@ -42,6 +42,7 @@
 #define OUTPUT_ENABLE_OFF		23
 #define SW_CNTRL_IN_OFF			24
 #define SW_CNTRL_EN_OFF			25
+#define WAKECNTRL_Z_OFF			27
 #define INTERRUPT_STS_OFF		28
 #define WAKE_STS_OFF			29