diff options
| author | Balamanikandan Gunasundar <balamanikandan.gunasundar@microchip.com> | 2023-08-25 15:21:57 +0530 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2023-08-25 13:40:21 +0200 |
| commit | 98ac9e4fc07f101c435f1ab6b395b6245b096a68 (patch) | |
| tree | 5b65240da2eff68bb9e8f562913faf4be55c251c /drivers/gpio/gpiolib-of.c | |
| parent | d2c6d518c21d73d96616e08a19eccd4642f4bafa (diff) | |
mmc: atmel-mci: Move card detect gpio polarity quirk to gpiolib
The polarity of the card detection gpio is handled by the "cd-inverted"
property in the device tree. Move this inversion logic to gpiolib to avoid
reading the gpio raw value.
Signed-off-by: Balamanikandan Gunasundar <balamanikandan.gunasundar@microchip.com>
Suggested-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230825095157.76073-4-balamanikandan.gunasundar@microchip.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/gpio/gpiolib-of.c')
| -rw-r--r-- | drivers/gpio/gpiolib-of.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 1436cdb5fa26..9694eb5afa21 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -209,6 +209,8 @@ static void of_gpio_set_polarity_by_property(const struct device_node *np, const char *propname, enum of_gpio_flags *flags) { + const struct device_node *np_compat = np; + const struct device_node *np_propname = np; static const struct { const char *compatible; const char *gpio_propname; @@ -253,14 +255,28 @@ static void of_gpio_set_polarity_by_property(const struct device_node *np, { "regulator-gpio", "enable-gpio", "enable-active-high" }, { "regulator-gpio", "enable-gpios", "enable-active-high" }, #endif +#if IS_ENABLED(CONFIG_MMC_ATMELMCI) + { "atmel,hsmci", "cd-gpios", "cd-inverted" }, +#endif }; unsigned int i; bool active_high; +#if IS_ENABLED(CONFIG_MMC_ATMELMCI) + /* + * The Atmel HSMCI has compatible property in the parent node and + * gpio property in a child node + */ + if (of_device_is_compatible(np->parent, "atmel,hsmci")) { + np_compat = np->parent; + np_propname = np; + } +#endif + for (i = 0; i < ARRAY_SIZE(gpios); i++) { - if (of_device_is_compatible(np, gpios[i].compatible) && + if (of_device_is_compatible(np_compat, gpios[i].compatible) && !strcmp(propname, gpios[i].gpio_propname)) { - active_high = of_property_read_bool(np, + active_high = of_property_read_bool(np_propname, gpios[i].polarity_propname); of_gpio_quirk_polarity(np, active_high, flags); break; |