From: Drew Fustini <drew@beagleboard.org>
To: Tony Lindgren <tony@atomide.com>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>,
Grygorii Strashko <grygorii.strashko@ti.com>,
Santosh Shilimkar <ssantosh@kernel.org>,
Kevin Hilman <khilman@kernel.org>,
linux-omap@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-kernel@vger.kernel.org
Cc: Drew Fustini <drew@beagleboard.org>
Subject: [PATCH] gpio: omap: handle pin config bias flags
Date: Fri, 10 Jul 2020 00:34:01 +0200 [thread overview]
Message-ID: <20200709223401.780051-1-drew@beagleboard.org> (raw)
Modify omap_gpio_set_config() to handle pin config bias flags by calling
gpiochip_generic_config().
The pin group for the gpio line must have the corresponding pinconf
properties:
PIN_CONFIG_BIAS_PULL_UP requires "pinctrl-single,bias-pullup"
PIN_CONFIG_BIAS_PULL_DOWN requires "pinctrl-single,bias-pulldown"
This is necessary for pcs_pinconf_set() to find the requested bias
parameter in the PIN_MAP_TYPE_CONFIGS_GROUP pinctrl map.
Signed-off-by: Drew Fustini <drew@beagleboard.org>
---
drivers/gpio/gpio-omap.c | 21 +++++++++++++++++----
1 file changed, 17 insertions(+), 4 deletions(-)
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index b8e2ecc3eade..a471a152f318 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -896,12 +896,25 @@ static int omap_gpio_set_config(struct gpio_chip *chip, unsigned offset,
unsigned long config)
{
u32 debounce;
+ int ret;
- if (pinconf_to_config_param(config) != PIN_CONFIG_INPUT_DEBOUNCE)
- return -ENOTSUPP;
+ if ((pinconf_to_config_param(config) == PIN_CONFIG_BIAS_DISABLE) ||
+ (pinconf_to_config_param(config) == PIN_CONFIG_BIAS_PULL_UP) ||
+ (pinconf_to_config_param(config) == PIN_CONFIG_BIAS_PULL_DOWN))
+ {
+ ret = gpiochip_generic_config(chip, offset, config);
+ }
+ else if (pinconf_to_config_param(config) == PIN_CONFIG_INPUT_DEBOUNCE)
+ {
+ debounce = pinconf_to_config_argument(config);
+ ret = omap_gpio_debounce(chip, offset, debounce);
+ }
+ else
+ {
+ ret = -ENOTSUPP;
+ }
- debounce = pinconf_to_config_argument(config);
- return omap_gpio_debounce(chip, offset, debounce);
+ return ret;
}
static void omap_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
--
2.25.1
next reply other threads:[~2020-07-09 22:34 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-09 22:34 Drew Fustini [this message]
2020-07-13 18:07 ` [PATCH] gpio: omap: handle pin config bias flags Tony Lindgren
2020-07-15 10:09 ` Grygorii Strashko
2020-07-15 21:32 ` Drew Fustini
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