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pinctrl: renesas: Implement gpio_request_enable/gpio_disable_free

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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+renesas@gmail.com>
Cc: Alex Kiernan <alex.kiernan@gmail.com>
Cc: Christoph Muellner <christoph.muellner@theobroma-systems.com>
Cc: Eugeniu Rosca <roscaeugeniu@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Patrick DELAUNAY <patrick.delaunay@st.com>
Cc: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Cc: Simon Glass <sjg@chromium.org>
This commit is contained in:
Marek Vasut 2019-04-21 22:46:25 +02:00 committed by Marek Vasut
parent 50e6901fec
commit 89ba7c5a8c
1 changed files with 39 additions and 1 deletions
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40
drivers/pinctrl/renesas/pfc.c
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@ -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)