diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2015-05-28 11:46:12 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2015-05-29 13:13:45 +0200 |
| commit | f7959e9c73200f2ae361d0d311aa501f2c6a05c7 (patch) | |
| tree | 3017e3f93d68b1ccdceb51a3cb752a5ce7408486 /net/rfkill | |
| parent | 6cbfb1bb66e4e85da5db78e8ff429a85bd84ce64 (diff) | |
| download | linux-f7959e9c73200f2ae361d0d311aa501f2c6a05c7.tar.bz2 | |
net: rfkill: gpio: make better use of gpiod API
Since 39b2bbe3d715 (gpio: add flags argument to gpiod_get*() functions)
which appeared in v3.17-rc1, the gpiod_get* functions take an additional
parameter that allows to specify direction and initial value for output.
Furthermore there is devm_gpiod_get_optional which is designed to get
optional gpios.
Simplify driver accordingly.
Note this makes error checking more strict because only -ENOENT is
ignored when searching for the GPIOs which is good.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/rfkill')
| -rw-r--r-- | net/rfkill/rfkill-gpio.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c index d978f2f46ff3..d5d58d919552 100644 --- a/net/rfkill/rfkill-gpio.c +++ b/net/rfkill/rfkill-gpio.c @@ -112,21 +112,17 @@ static int rfkill_gpio_probe(struct platform_device *pdev) rfkill->clk = devm_clk_get(&pdev->dev, NULL); - gpio = devm_gpiod_get(&pdev->dev, "reset"); - if (!IS_ERR(gpio)) { - ret = gpiod_direction_output(gpio, 0); - if (ret) - return ret; - rfkill->reset_gpio = gpio; - } + gpio = devm_gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); + if (IS_ERR(gpio)) + return PTR_ERR(gpio); - gpio = devm_gpiod_get(&pdev->dev, "shutdown"); - if (!IS_ERR(gpio)) { - ret = gpiod_direction_output(gpio, 0); - if (ret) - return ret; - rfkill->shutdown_gpio = gpio; - } + rfkill->reset_gpio = gpio; + + gpio = devm_gpiod_get_optional(&pdev->dev, "shutdown", GPIOD_OUT_LOW); + if (IS_ERR(gpio)) + return PTR_ERR(gpio); + + rfkill->shutdown_gpio = gpio; /* Make sure at-least one of the GPIO is defined and that * a name is specified for this instance |