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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-11-25 20:14:03 +0200
committerAndy Shevchenko <andriy.shevchenko@linux.intel.com>2019-12-13 16:48:48 +0200
commit03d9eca7d40608197bb20c584a6da97b3399559b (patch)
treeb6c9b8b2d35e7cc861f1bc2d15589bec6d245df7 /drivers/pinctrl/intel/pinctrl-lynxpoint.c
parent7f32d37009974c52323335cf8d118384fbce3572 (diff)
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>
Diffstat (limited to 'drivers/pinctrl/intel/pinctrl-lynxpoint.c')
-rw-r--r--drivers/pinctrl/intel/pinctrl-lynxpoint.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/pinctrl/intel/pinctrl-lynxpoint.c b/drivers/pinctrl/intel/pinctrl-lynxpoint.c
index c209deff9efb..bfdd283d2c20 100644
--- a/drivers/pinctrl/intel/pinctrl-lynxpoint.c
+++ b/drivers/pinctrl/intel/pinctrl-lynxpoint.c
@@ -297,10 +297,33 @@ static int lp_get_group_pins(struct pinctrl_dev *pctldev,
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 = {
.get_groups_count = lp_get_groups_count,
.get_group_name = lp_get_group_name,
.get_group_pins = lp_get_group_pins,
+ .pin_dbg_show = lp_pin_dbg_show,
};
static int lp_get_functions_count(struct pinctrl_dev *pctldev)