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| author | Chester Lin <clin@suse.com> | 2023-03-27 08:27:51 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2023-03-27 23:35:00 +0200 |
| commit | 48b016cbb2f48ce4cbefd91f63a0d0dded975932 (patch) | |
| tree | f5ff11deca5fd93c6619ad9ef23b68967cc0aea9 /drivers/pinctrl | |
| parent | pinctrl: s32: refine error/return/config checks and simplify driver codes (diff) | |
| download | linux-48b016cbb2f48ce4cbefd91f63a0d0dded975932.tar.xz linux-48b016cbb2f48ce4cbefd91f63a0d0dded975932.zip | |
pinctrl: s32cc: refactor pin config parsing
Move common codes into smaller inline functions and remove argument checks
that are not actually used by pull up/down bits in the S32 MSCR register.
Signed-off-by: Chester Lin <clin@suse.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230327062754.3326-3-clin@suse.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/nxp/pinctrl-s32cc.c | 52 |
1 files changed, 33 insertions, 19 deletions
diff --git a/drivers/pinctrl/nxp/pinctrl-s32cc.c b/drivers/pinctrl/nxp/pinctrl-s32cc.c index f698e1a240ef..36f323f87785 100644 --- a/drivers/pinctrl/nxp/pinctrl-s32cc.c +++ b/drivers/pinctrl/nxp/pinctrl-s32cc.c @@ -474,11 +474,38 @@ static int s32_get_slew_regval(int arg) return -EINVAL; } -static int s32_get_pin_conf(enum pin_config_param param, u32 arg, - unsigned int *mask, unsigned int *config) +static inline void s32_pin_set_pull(enum pin_config_param param, + unsigned int *mask, unsigned int *config) { + switch (param) { + case PIN_CONFIG_BIAS_DISABLE: + case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: + *config &= ~(S32_MSCR_PUS | S32_MSCR_PUE); + break; + case PIN_CONFIG_BIAS_PULL_UP: + *config |= S32_MSCR_PUS | S32_MSCR_PUE; + break; + case PIN_CONFIG_BIAS_PULL_DOWN: + *config &= ~S32_MSCR_PUS; + *config |= S32_MSCR_PUE; + break; + default: + return; + } + + *mask |= S32_MSCR_PUS | S32_MSCR_PUE; +} + +static int s32_parse_pincfg(unsigned long pincfg, unsigned int *mask, + unsigned int *config) +{ + enum pin_config_param param; + u32 arg; int ret; + param = pinconf_to_config_param(pincfg); + arg = pinconf_to_config_argument(pincfg); + switch (param) { /* All pins are persistent over suspend */ case PIN_CONFIG_PERSIST_STATE: @@ -508,26 +535,15 @@ static int s32_get_pin_conf(enum pin_config_param param, u32 arg, *config |= S32_MSCR_SRE((u32)ret); *mask |= S32_MSCR_SRE(~0); break; + case PIN_CONFIG_BIAS_DISABLE: case PIN_CONFIG_BIAS_PULL_UP: - if (arg) - *config |= S32_MSCR_PUS; - else - *config &= ~S32_MSCR_PUS; - fallthrough; case PIN_CONFIG_BIAS_PULL_DOWN: - if (arg) - *config |= S32_MSCR_PUE; - else - *config &= ~S32_MSCR_PUE; - *mask |= S32_MSCR_PUE | S32_MSCR_PUS; + s32_pin_set_pull(param, mask, config); break; case PIN_CONFIG_BIAS_HIGH_IMPEDANCE: *config &= ~(S32_MSCR_ODE | S32_MSCR_OBE | S32_MSCR_IBE); *mask |= S32_MSCR_ODE | S32_MSCR_OBE | S32_MSCR_IBE; - fallthrough; - case PIN_CONFIG_BIAS_DISABLE: - *config &= ~(S32_MSCR_PUS | S32_MSCR_PUE); - *mask |= S32_MSCR_PUS | S32_MSCR_PUE; + s32_pin_set_pull(param, mask, config); break; default: return -EOPNOTSUPP; @@ -553,9 +569,7 @@ static int s32_pinconf_mscr_update(struct pinctrl_dev *pctldev, pin_get_name(pctldev, pin_id), num_configs); for (i = 0; i < num_configs; i++) { - ret = s32_get_pin_conf(pinconf_to_config_param(configs[i]), - pinconf_to_config_argument(configs[i]), - &mask, &config); + ret = s32_parse_pincfg(configs[i], &mask, &config); if (ret) return ret; } |