diff options
author | Doug Anderson <dianders@chromium.org> | 2014-10-21 21:47:33 +0400 |
---|---|---|
committer | Heiko Stuebner <heiko@sntech.de> | 2014-10-29 23:06:21 +0300 |
commit | e5c2c9db0a2cff4d4df4b94f91146b26a0f0adc7 (patch) | |
tree | de56d37cd83b68cce00ad1c0e45bfec59194bfe6 /drivers | |
parent | 876d716ba9af205f46b7e911d39482e627aea0e8 (diff) | |
download | linux-e5c2c9db0a2cff4d4df4b94f91146b26a0f0adc7.tar.xz |
pinctrl: rockchip: Don't call pinctrl_gpio_direction_output() in pin_config_set()
The Rockchip pinctrl driver was calling
rockchip_gpio_direction_output() in the pin_config_set() callback.
This was just a shortcut for:
* rockchip_gpio_set()
* pinctrl_gpio_direction_output()
Unfortunately it's not so good to call pinctrl_gpio_direction_output()
from pin_config_set(). Specifically when initting hogs you'll get an
error.
Let's refactor a little so we can call
_rockchip_pmx_gpio_set_direction() directly.
Signed-off-by: Doug Anderson <dianders@chromium.org>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/pinctrl/pinctrl-rockchip.c | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index 230d8f379129..8a3c582108c5 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -856,22 +856,14 @@ static int rockchip_pmx_set(struct pinctrl_dev *pctldev, unsigned selector, * leads to this function call (via the pinctrl_gpio_direction_{input|output}() * function called from the gpiolib interface). */ -static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev, - struct pinctrl_gpio_range *range, - unsigned offset, bool input) +static int _rockchip_pmx_gpio_set_direction(struct gpio_chip *chip, + int pin, bool input) { - struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); struct rockchip_pin_bank *bank; - struct gpio_chip *chip; - int pin, ret; + int ret; u32 data; - chip = range->gc; bank = gc_to_pin_bank(chip); - pin = offset - chip->base; - - dev_dbg(info->dev, "gpio_direction for pin %u as %s-%d to %s\n", - offset, range->name, pin, input ? "input" : "output"); ret = rockchip_set_mux(bank, pin, RK_FUNC_GPIO); if (ret < 0) @@ -888,6 +880,23 @@ static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev, return 0; } +static int rockchip_pmx_gpio_set_direction(struct pinctrl_dev *pctldev, + struct pinctrl_gpio_range *range, + unsigned offset, bool input) +{ + struct rockchip_pinctrl *info = pinctrl_dev_get_drvdata(pctldev); + struct gpio_chip *chip; + int pin; + + chip = range->gc; + pin = offset - chip->base; + dev_dbg(info->dev, "gpio_direction for pin %u as %s-%d to %s\n", + offset, range->name, pin, input ? "input" : "output"); + + return _rockchip_pmx_gpio_set_direction(chip, offset - chip->base, + input); +} + static const struct pinmux_ops rockchip_pmx_ops = { .get_functions_count = rockchip_pmx_get_funcs_count, .get_function_name = rockchip_pmx_get_func_name, @@ -917,8 +926,7 @@ static bool rockchip_pinconf_pull_valid(struct rockchip_pin_ctrl *ctrl, return false; } -static int rockchip_gpio_direction_output(struct gpio_chip *gc, - unsigned offset, int value); +static void rockchip_gpio_set(struct gpio_chip *gc, unsigned offset, int value); static int rockchip_gpio_get(struct gpio_chip *gc, unsigned offset); /* set the pin config settings for a specified pin */ @@ -959,9 +967,10 @@ static int rockchip_pinconf_set(struct pinctrl_dev *pctldev, unsigned int pin, return rc; break; case PIN_CONFIG_OUTPUT: - rc = rockchip_gpio_direction_output(&bank->gpio_chip, - pin - bank->pin_base, - arg); + rockchip_gpio_set(&bank->gpio_chip, + pin - bank->pin_base, arg); + rc = _rockchip_pmx_gpio_set_direction(&bank->gpio_chip, + pin - bank->pin_base, false); if (rc) return rc; break; |