Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-04 11:04:38 +00:00
Code Issues Packages Projects Releases Wiki Activity

pinctrl: rockchip: Don't call pinctrl_gpio_direction_output() in pin_config_set()

Browse Source 
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>
This commit is contained in:
Doug Anderson 2014-10-21 10:47:33 -07:00 committed by Heiko Stuebner
parent 876d716ba9
commit e5c2c9db0a
1 changed files with 25 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
drivers/pinctrl/pinctrl-rockchip.c
View File

@ -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;