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| author |   Stefan Wahren <stefan.wahren@i2se.com> | 2019-08-14 14:00:35 +0300 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2019-08-23 11:09:41 +0200 |
| commit | 472a61e777fe78cdcb6cb6f25efee0ae9f629aca (patch) | |
| tree | f3ee044b2383fa012881daf257e6b4ca90ceefd4 /drivers/pinctrl/pinmux.h | |
| parent | dt-bindings: pinctrl: qcom-pmic-gpio: Add pm8150l support (diff) | |
| download | linux-dev-472a61e777fe78cdcb6cb6f25efee0ae9f629aca.tar.xz linux-dev-472a61e777fe78cdcb6cb6f25efee0ae9f629aca.zip | |
pinctrl/gpio: Take MUX usage into account
The user space like gpioinfo only see the GPIO usage but not the
MUX usage (e.g. I2C or SPI usage) of a pin. As a user we want
to know which pin is free/safe to use. So take the MUX usage of
strict pinmux controllers into account to get a more realistic
view for ioctl GPIO_GET_LINEINFO_IOCTL.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Ramon Fried <rfried.dev@gmail.com>
Signed-off-by: Ramon Fried <rfried.dev@gmail.com>
Link: https://lore.kernel.org/r/20190814110035.13451-1-ramon.fried@linux.intel.com
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinmux.h')
| -rw-r--r-- | drivers/pinctrl/pinmux.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinmux.h b/drivers/pinctrl/pinmux.h index 794cb3a003ff..78c3a31be882 100644 --- a/drivers/pinctrl/pinmux.h +++ b/drivers/pinctrl/pinmux.h @@ -15,6 +15,8 @@ int pinmux_check_ops(struct pinctrl_dev *pctldev); int pinmux_validate_map(const struct pinctrl_map *map, int i); +bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, unsigned pin); + int pinmux_request_gpio(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range, unsigned pin, unsigned gpio); @@ -42,6 +44,12 @@ static inline int pinmux_validate_map(const struct pinctrl_map *map, int i) return 0; } +static inline bool pinmux_can_be_used_for_gpio(struct pinctrl_dev *pctldev, + unsigned pin) +{ + return true; +} + static inline int pinmux_request_gpio(struct pinctrl_dev *pctldev, struct pinctrl_gpio_range *range, unsigned pin, unsigned gpio) |