pinctrl: cy8c95x0: Implement ->pin_dbg_show()

The introduced callback ->pin_dbg_show() is useful for debugging.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Link: https://lore.kernel.org/r/20220902182650.83098-12-andriy.shevchenko@linux.intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-cy8c95x0.c b/drivers/pinctrl/pinctrl-cy8c95x0.c
index c714c43..e1900db 100644 (file)
--- a/drivers/pinctrl/pinctrl-cy8c95x0.c
+++ b/drivers/pinctrl/pinctrl-cy8c95x0.c
@@ -1021,25 +1021,49 @@ static int cy8c95x0_pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
        return 0;
 }
 
+static const char *cy8c95x0_get_fname(unsigned int selector)
+{
+       if (selector == 0)
+               return "gpio";
+       else
+               return "pwm";
+}
+
+static void cy8c95x0_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
+                                 unsigned int pin)
+{
+       struct cy8c95x0_pinctrl *chip = pinctrl_dev_get_drvdata(pctldev);
+       DECLARE_BITMAP(mask, MAX_LINE);
+       DECLARE_BITMAP(pwm, MAX_LINE);
+
+       bitmap_zero(mask, MAX_LINE);
+       __set_bit(pin, mask);
+
+       if (cy8c95x0_read_regs_mask(chip, CY8C95X0_PWMSEL, pwm, mask)) {
+               seq_puts(s, "not available");
+               return;
+       }
+
+       seq_printf(s, "MODE:%s", cy8c95x0_get_fname(test_bit(pin, pwm)));
+}
+
 static const struct pinctrl_ops cy8c95x0_pinctrl_ops = {
        .get_groups_count = cy8c95x0_pinctrl_get_groups_count,
        .get_group_name = cy8c95x0_pinctrl_get_group_name,
        .get_group_pins = cy8c95x0_pinctrl_get_group_pins,
        .dt_node_to_map = pinconf_generic_dt_node_to_map_pin,
        .dt_free_map = pinconf_generic_dt_free_map,
+       .pin_dbg_show = cy8c95x0_pin_dbg_show,
 };
 
-static int cy8c95x0_get_functions_count(struct pinctrl_dev *pctldev)
+static const char *cy8c95x0_get_functions_name(struct pinctrl_dev *pctldev, unsigned int selector)
 {
-       return 2;
+       return cy8c95x0_get_fname(selector);
 }
 
-static const char *cy8c95x0_get_fname(struct pinctrl_dev *pctldev, unsigned int selector)
+static int cy8c95x0_get_functions_count(struct pinctrl_dev *pctldev)
 {
-       if (selector == 0)
-               return "gpio";
-       else
-               return "pwm";
+       return 2;
 }
 
 static int cy8c95x0_get_groups(struct pinctrl_dev *pctldev, unsigned int selector,
@@ -1088,7 +1112,7 @@ static int cy8c95x0_set_mux(struct pinctrl_dev *pctldev, unsigned int selector,
 
 static const struct pinmux_ops cy8c95x0_pmxops = {
        .get_functions_count = cy8c95x0_get_functions_count,
-       .get_function_name = cy8c95x0_get_fname,
+       .get_function_name = cy8c95x0_get_functions_name,
        .get_function_groups = cy8c95x0_get_groups,
        .set_mux = cy8c95x0_set_mux,
        .strict = true,