diff options
| author | Joachim Eastwood <manabian@gmail.com> | 2015-05-06 19:11:21 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-05-12 13:17:48 +0200 |
| commit | 403fbdee4728afc4e5c4b0a24b8eac3b52595b39 (patch) | |
| tree | f7c51c9af3adeb6e032b86861e0f6b41239cdb14 /drivers/pinctrl/pinctrl-lpc18xx.c | |
| parent | e8e36d2f1873218a2fdaf0b7cd335b84e8be6112 (diff) | |
| download | linux-403fbdee4728afc4e5c4b0a24b8eac3b52595b39.tar.gz | |
pinctrl: lpc18xx: create pin cap lookup helper
Both pconf_get_pin and pconf_set_pin needs to lookup pin cap based on the pin number. Create a common helper function that both functions can use that also handles the case where no pin number is found in the pins array. This also fixes a small bug in pconf_get_pin where pconf_get_i2c0 would use the pins array index rather than the pin number. Signed-off-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-lpc18xx.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-lpc18xx.c | 29 |
1 files changed, 18 insertions, 11 deletions
diff --git a/drivers/pinctrl/pinctrl-lpc18xx.c b/drivers/pinctrl/pinctrl-lpc18xx.c index 15fe1e2535c2..0facb7e64fef 100644 --- a/drivers/pinctrl/pinctrl-lpc18xx.c +++ b/drivers/pinctrl/pinctrl-lpc18xx.c @@ -729,6 +729,18 @@ static int lpc18xx_pconf_get_pin(enum pin_config_param param, int *arg, u32 reg, return 0; } +static struct lpc18xx_pin_caps *lpc18xx_get_pin_caps(unsigned pin) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { + if (lpc18xx_pins[i].number == pin) + return lpc18xx_pins[i].drv_data; + } + + return NULL; +} + static int lpc18xx_pconf_get(struct pinctrl_dev *pctldev, unsigned pin, unsigned long *config) { @@ -737,14 +749,11 @@ static int lpc18xx_pconf_get(struct pinctrl_dev *pctldev, unsigned pin, struct lpc18xx_pin_caps *pin_cap; int ret, arg = 0; u32 reg; - int i; - for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { - if (lpc18xx_pins[i].number == pin) - pin = i; - } + pin_cap = lpc18xx_get_pin_caps(pin); + if (!pin_cap) + return -EINVAL; - pin_cap = lpc18xx_pins[pin].drv_data; reg = readl(scu->base + pin_cap->offset); if (pin_cap->type == TYPE_I2C0) @@ -905,12 +914,10 @@ static int lpc18xx_pconf_set(struct pinctrl_dev *pctldev, unsigned pin, int ret; int i; - for (i = 0; i < ARRAY_SIZE(lpc18xx_pins); i++) { - if (lpc18xx_pins[i].number == pin) - break; - } + pin_cap = lpc18xx_get_pin_caps(pin); + if (!pin_cap) + return -EINVAL; - pin_cap = lpc18xx_pins[i].drv_data; reg = readl(scu->base + pin_cap->offset); for (i = 0; i < num_configs; i++) { |