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>
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@ -404,6 +404,26 @@ sh_pfc_pin_to_bias_info(const struct sh_pfc_bias_info *info,
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return NULL;
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}
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const struct pinmux_bias_reg *
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sh_pfc_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin,
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unsigned int *bit)
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{
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unsigned int i, j;
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for (i = 0; pfc->info->bias_regs[i].puen; i++) {
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for (j = 0; j < ARRAY_SIZE(pfc->info->bias_regs[i].pins); j++) {
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if (pfc->info->bias_regs[i].pins[j] == pin) {
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*bit = j;
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return &pfc->info->bias_regs[i];
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}
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}
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}
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WARN_ONCE(1, "Pin %u is not in bias info list\n", pin);
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return NULL;
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}
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static int sh_pfc_init_ranges(struct sh_pfc *pfc)
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{
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struct sh_pfc_pin_range *range;
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@ -35,5 +35,8 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type);
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const struct sh_pfc_bias_info *
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sh_pfc_pin_to_bias_info(const struct sh_pfc_bias_info *info,
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unsigned int num, unsigned int pin);
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const struct pinmux_bias_reg *
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sh_pfc_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin,
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unsigned int *bit);
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#endif /* __SH_PFC_CORE_H__ */
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