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authorDoug Anderson <dianders@chromium.org>2014-10-21 21:47:33 +0400
committerHeiko Stuebner <heiko@sntech.de>2014-10-29 23:06:21 +0300
commite5c2c9db0a2cff4d4df4b94f91146b26a0f0adc7 (patch)
treede56d37cd83b68cce00ad1c0e45bfec59194bfe6 /drivers/pinctrl/pinctrl-rockchip.c
parent876d716ba9af205f46b7e911d39482e627aea0e8 (diff)
downloadlinux-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/pinctrl/pinctrl-rockchip.c')
-rw-r--r--drivers/pinctrl/pinctrl-rockchip.c41
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;