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pinctrl: uniphier: support per-pin configuration via DT

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Currently, the UniPhier pinctrl drivers expose only the pin-group
interface to device tree.

Provide .get_pins_count, .get_pin_name, .pinconf_set hooks to support
pin configuration via 'pins' DT property.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Masahiro Yamada 2018-05-05 19:53:54 +09:00
parent 03cfc80134
commit 603fd9ead6
2 changed files with 36 additions and 4 deletions
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37
drivers/pinctrl/uniphier/pinctrl-uniphier-core.c
View File

@ -21,6 +21,34 @@
static const char *uniphier_pinctrl_dummy_name = "_dummy";
static int uniphier_pinctrl_get_pins_count(struct udevice *dev)
{
struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
const struct uniphier_pinctrl_pin *pins = priv->socdata->pins;
int pins_count = priv->socdata->pins_count;
/*
* We do not list all pins in the pin table to save memory footprint.
* Report the max pin number + 1 to fake the framework.
*/
return pins[pins_count - 1].number + 1;
}
static const char *uniphier_pinctrl_get_pin_name(struct udevice *dev,
unsigned int selector)
{
struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
const struct uniphier_pinctrl_pin *pins = priv->socdata->pins;
int pins_count = priv->socdata->pins_count;
int i;
for (i = 0; i < pins_count; i++)
if (pins[i].number == selector)
return pins[i].name;
return uniphier_pinctrl_dummy_name;
}
static int uniphier_pinctrl_get_groups_count(struct udevice *dev)
{
struct uniphier_pinctrl_priv *priv = dev_get_priv(dev);
@ -157,8 +185,8 @@ static int uniphier_pinconf_bias_set(struct udevice *dev, unsigned int pin,
return 0;
}
static int uniphier_pinconf_set_one(struct udevice *dev, unsigned int pin,
unsigned int param, unsigned int arg)
static int uniphier_pinconf_set(struct udevice *dev, unsigned int pin,
unsigned int param, unsigned int arg)
{
int ret;
@ -190,7 +218,7 @@ static int uniphier_pinconf_group_set(struct udevice *dev,
int i, ret;
for (i = 0; i < grp->num_pins; i++) {
ret = uniphier_pinconf_set_one(dev, grp->pins[i], param, arg);
ret = uniphier_pinconf_set(dev, grp->pins[i], param, arg);
if (ret)
return ret;
}
@ -268,6 +296,8 @@ static int uniphier_pinmux_group_set(struct udevice *dev,
}
const struct pinctrl_ops uniphier_pinctrl_ops = {
.get_pins_count = uniphier_pinctrl_get_pins_count,
.get_pin_name = uniphier_pinctrl_get_pin_name,
.get_groups_count = uniphier_pinctrl_get_groups_count,
.get_group_name = uniphier_pinctrl_get_group_name,
.get_functions_count = uniphier_pinmux_get_functions_count,
@ -276,6 +306,7 @@ const struct pinctrl_ops uniphier_pinctrl_ops = {
#if CONFIG_IS_ENABLED(PINCONF)
.pinconf_num_params = ARRAY_SIZE(uniphier_pinconf_params),
.pinconf_params = uniphier_pinconf_params,
.pinconf_set = uniphier_pinconf_set,
.pinconf_group_set = uniphier_pinconf_group_set,
#endif
.set_state = pinctrl_generic_set_state,

3
drivers/pinctrl/uniphier/pinctrl-uniphier.h
View File

@ -27,7 +27,8 @@ static inline unsigned int uniphier_pin_get_iectrl(unsigned long data)
*/
struct uniphier_pinctrl_pin {
unsigned number;
unsigned long data;
const char *name;
unsigned int data;
};
/**