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>
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;
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__ */