Implement the gpio_request_enable/gpio_disable_free callbacks to let
the GPIO driver call the pin control framework and let it reconfigure
pins as GPIOs.
Signed-off-by: Marek Vasut <marek.vasut+rene...@gmail.com>
Cc: Alex Kiernan <alex.kier...@gmail.com>
Cc: Christoph Muellner <christoph.muell...@theobroma-systems.com>
Cc: Eugeniu Rosca <roscaeuge...@gmail.com>
Cc: Patrice Chotard <patrice.chot...@st.com>
Cc: Patrick DELAUNAY <patrick.delau...@st.com>
Cc: Philipp Tomsich <philipp.toms...@theobroma-systems.com>
Cc: Simon Glass <s...@chromium.org>
---
drivers/pinctrl/renesas/pfc.c | 40 ++++++++++++++++++++++++++++++++++-
1 file changed, 39 insertions(+), 1 deletion(-)
diff --git a/drivers/pinctrl/renesas/pfc.c b/drivers/pinctrl/renesas/pfc.c
index 59dc4af702..52c486ebc2 100644
--- a/drivers/pinctrl/renesas/pfc.c
+++ b/drivers/pinctrl/renesas/pfc.c
@@ -459,7 +459,8 @@ static const char *sh_pfc_pinctrl_get_function_name(struct
udevice *dev,
return priv->pfc.info->functions[selector].name;
}
-int sh_pfc_config_mux_for_gpio(struct udevice *dev, unsigned pin_selector)
+static int sh_pfc_gpio_request_enable(struct udevice *dev,
+ unsigned pin_selector)
{
struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
struct sh_pfc_pinctrl *pmx = &priv->pmx;
@@ -494,6 +495,40 @@ int sh_pfc_config_mux_for_gpio(struct udevice *dev,
unsigned pin_selector)
return 0;
}
+static int sh_pfc_gpio_disable_free(struct udevice *dev,
+ unsigned pin_selector)
+{
+ struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
+ struct sh_pfc_pinctrl *pmx = &priv->pmx;
+ struct sh_pfc *pfc = &priv->pfc;
+ struct sh_pfc_pin_config *cfg;
+ const struct sh_pfc_pin *pin = NULL;
+ int i, idx;
+
+ for (i = 1; i < pfc->info->nr_pins; i++) {
+ if (priv->pfc.info->pins[i].pin != pin_selector)
+ continue;
+
+ pin = &priv->pfc.info->pins[i];
+ break;
+ }
+
+ if (!pin)
+ return -EINVAL;
+
+ idx = sh_pfc_get_pin_index(pfc, pin->pin);
+ cfg = &pmx->configs[idx];
+
+ cfg->type = PINMUX_TYPE_NONE;
+
+ return 0;
+}
+
+int sh_pfc_config_mux_for_gpio(struct udevice *dev, unsigned pin_selector)
+{
+ return sh_pfc_gpio_request_enable(dev, pin_selector);
+}
+
static int sh_pfc_pinctrl_pin_set(struct udevice *dev, unsigned pin_selector,
unsigned func_selector)
{
@@ -752,6 +787,9 @@ static struct pinctrl_ops sh_pfc_pinctrl_ops = {
.pinmux_set = sh_pfc_pinctrl_pin_set,
.pinmux_group_set = sh_pfc_pinctrl_group_set,
.set_state = pinctrl_generic_set_state,
+
+ .gpio_request_enable = sh_pfc_gpio_request_enable,
+ .gpio_disable_free = sh_pfc_gpio_disable_free,
};
static int sh_pfc_map_pins(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx)
--
2.20.1
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