From: Xianwei Zhao <xianwei.zhao@xxxxxxxxxxx>
Amlogic pinctrl software framework use system API of_gpio_simple_xlate
which only support linear one-to-one correspondence to translate gpiospec
to the GPIO number and flags before. It can not meet the non-linear needs.
Add the interface satisfies the underlying driver to implement the
transformation to meet the needs of various scenarios.
Signed-off-by: Xianwei Zhao <xianwei.zhao@xxxxxxxxxxx>
---
drivers/pinctrl/meson/pinctrl-meson.c | 4 ++++
drivers/pinctrl/meson/pinctrl-meson.h | 4 ++++
2 files changed, 8 insertions(+)
diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
index 253a0cc57e39..fc0c0bef38c0 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.c
+++ b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -620,6 +620,10 @@ static int meson_gpiolib_register(struct meson_pinctrl *pc)
pc->chip.base = -1;
pc->chip.ngpio = pc->data->num_pins;
pc->chip.can_sleep = false;
+ if (pc->data->of_xlate) {
+ pc->chip.of_gpio_n_cells = pc->data->of_gpio_n_cells;
+ pc->chip.of_xlate = pc->data->of_xlate;
+ }
ret = gpiochip_add_data(&pc->chip, pc);
if (ret) {
diff --git a/drivers/pinctrl/meson/pinctrl-meson.h b/drivers/pinctrl/meson/pinctrl-meson.h
index 7883ea31a001..cbb3f22552b9 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.h
+++ b/drivers/pinctrl/meson/pinctrl-meson.h
@@ -120,6 +120,10 @@ struct meson_pinctrl_data {
const struct pinmux_ops *pmx_ops;
const void *pmx_data;
int (*parse_dt)(struct meson_pinctrl *pc);
+ int (*of_xlate)(struct gpio_chip *gc,
+ const struct of_phandle_args *gpiospec,
+ u32 *flags);
+ int of_gpio_n_cells;
};
struct meson_pinctrl {
--
2.37.1
