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pinctrl: lynxpoint: Implement ->pin_dbg_show() 

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

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2019-11-25 20:14:03 +02:00
parent 7f32d37009
commit 03d9eca7d4
1 changed files with 23 additions and 0 deletions
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23
drivers/pinctrl/intel/pinctrl-lynxpoint.c
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@ -297,10 +297,33 @@ static int lp_get_group_pins(struct pinctrl_dev *pctldev,
return 0; return 0;
} }
static void lp_pin_dbg_show(struct pinctrl_dev *pctldev, struct seq_file *s,
unsigned int pin)
{
struct intel_pinctrl *lg = pinctrl_dev_get_drvdata(pctldev);
void __iomem *reg = lp_gpio_reg(&lg->chip, pin, LP_CONFIG1);
void __iomem *conf2 = lp_gpio_reg(&lg->chip, pin, LP_CONFIG2);
u32 value, mode;
value = ioread32(reg);
mode = value & USE_SEL_MASK;
if (mode == USE_SEL_GPIO)
seq_puts(s, "GPIO ");
else
seq_printf(s, "mode %d ", mode);
seq_printf(s, "0x%08x 0x%08x", value, ioread32(conf2));
if (lp_gpio_acpi_use(lg, pin))
seq_puts(s, " [ACPI]");
}
static const struct pinctrl_ops lptlp_pinctrl_ops = { static const struct pinctrl_ops lptlp_pinctrl_ops = {
.get_groups_count = lp_get_groups_count, .get_groups_count = lp_get_groups_count,
.get_group_name = lp_get_group_name, .get_group_name = lp_get_group_name,
.get_group_pins = lp_get_group_pins, .get_group_pins = lp_get_group_pins,
.pin_dbg_show = lp_pin_dbg_show,
}; };
static int lp_get_functions_count(struct pinctrl_dev *pctldev) static int lp_get_functions_count(struct pinctrl_dev *pctldev)