diff options
| author |   Geert Uytterhoeven <geert+renesas@glider.be> | 2017-09-29 15:44:38 +0200 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2017-10-20 11:37:03 +0200 |
| commit | acdb12453910d86dce3baa95c12178893c0aa32d (patch) | |
| tree | 762e5bf907230339f8eb0224842569ea13c08475 /drivers/pinctrl | |
| parent | pinctrl: sh-pfc: Add generic bias register description (diff) | |
| download | linux-dev-acdb12453910d86dce3baa95c12178893c0aa32d.tar.xz linux-dev-acdb12453910d86dce3baa95c12178893c0aa32d.zip | |
pinctrl: sh-pfc: Add sh_pfc_pin_to_bias_reg() helper
Add a helper to look up bias registers and bit number for a specific
pin, using the generic bias register description.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/sh-pfc/core.c | 20 | ||||
| -rw-r--r-- | drivers/pinctrl/sh-pfc/core.h | 3 |
2 files changed, 23 insertions, 0 deletions
diff --git a/drivers/pinctrl/sh-pfc/core.c b/drivers/pinctrl/sh-pfc/core.c index 8b422ac07e57..01c408a3dee4 100644 --- a/drivers/pinctrl/sh-pfc/core.c +++ b/drivers/pinctrl/sh-pfc/core.c @@ -404,6 +404,26 @@ sh_pfc_pin_to_bias_info(const struct sh_pfc_bias_info *info, return NULL; } +const struct pinmux_bias_reg * +sh_pfc_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin, + unsigned int *bit) +{ + unsigned int i, j; + + for (i = 0; pfc->info->bias_regs[i].puen; i++) { + for (j = 0; j < ARRAY_SIZE(pfc->info->bias_regs[i].pins); j++) { + if (pfc->info->bias_regs[i].pins[j] == pin) { + *bit = j; + return &pfc->info->bias_regs[i]; + } + } + } + + WARN_ONCE(1, "Pin %u is not in bias info list\n", pin); + + return NULL; +} + static int sh_pfc_init_ranges(struct sh_pfc *pfc) { struct sh_pfc_pin_range *range; diff --git a/drivers/pinctrl/sh-pfc/core.h b/drivers/pinctrl/sh-pfc/core.h index dd215d36dcc8..460d996513ac 100644 --- a/drivers/pinctrl/sh-pfc/core.h +++ b/drivers/pinctrl/sh-pfc/core.h @@ -35,5 +35,8 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type); const struct sh_pfc_bias_info * sh_pfc_pin_to_bias_info(const struct sh_pfc_bias_info *info, unsigned int num, unsigned int pin); +const struct pinmux_bias_reg * +sh_pfc_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin, + unsigned int *bit); #endif /* __SH_PFC_CORE_H__ */ |