pinctrl: refactor struct pinctrl handling in core.c vs pinmux.c
This change separates two aspects of struct pinctrl:
a) The data representation of the parsed mapping table, into:
1) The top-level struct pinctrl object, a single entity returned
by pinctrl_get().
2) The parsed version of each mapping table entry, struct
pinctrl_setting, of which there is one per mapping table entry.
b) The code that handles this; the code for (1) above is in core.c, and
the code to parse/execute each entry in (2) above is in pinmux.c, while
the iteration over multiple settings is lifted to core.c.
This will allow the following future changes:
1) pinctrl_get() API rework, so that struct pinctrl represents all states
for the device, and the device can select between them without calling
put()/get() again.
2) To support that, a struct pinctrl_state object will be inserted into
the data model between the struct pinctrl and struct pinctrl_setting.
3) The mapping table will be extended to allow specification of pin config
settings too. To support this, struct pinctrl_setting will be enhanced
to store either mux settings or config settings, and functions will be
added to pinconf.c to parse/execute pin configuration settings.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/pinctrl/pinmux.h b/drivers/pinctrl/pinmux.h
index 822febb..1500ae8 100644
--- a/drivers/pinctrl/pinmux.h
+++ b/drivers/pinctrl/pinmux.h
@@ -13,6 +13,7 @@
#ifdef CONFIG_PINMUX
int pinmux_check_ops(struct pinctrl_dev *pctldev);
+
int pinmux_request_gpio(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned pin, unsigned gpio);
@@ -21,21 +22,16 @@
int pinmux_gpio_direction(struct pinctrl_dev *pctldev,
struct pinctrl_gpio_range *range,
unsigned pin, bool input);
-static inline void pinmux_init_pinctrl_handle(struct pinctrl *p)
-{
- INIT_LIST_HEAD(&p->groups);
-}
-int pinmux_apply_muxmap(struct pinctrl_dev *pctldev,
- struct pinctrl *p,
- struct device *dev,
- const char *devname,
- struct pinctrl_map const *map);
-void pinmux_put(struct pinctrl *p);
-int pinmux_enable(struct pinctrl *p);
-void pinmux_disable(struct pinctrl *p);
+
+int pinmux_map_to_setting(struct pinctrl_map const *map,
+ struct pinctrl_setting *setting);
+void pinmux_free_setting(struct pinctrl_setting const *setting);
+int pinmux_enable_setting(struct pinctrl_setting const *setting);
+void pinmux_disable_setting(struct pinctrl_setting const *setting);
+
+void pinmux_dbg_show(struct seq_file *s, struct pinctrl_setting const *setting);
void pinmux_init_device_debugfs(struct dentry *devroot,
struct pinctrl_dev *pctldev);
-void pinmux_dbg_show(struct seq_file *s, struct pinctrl *p);
#else
@@ -64,28 +60,23 @@
return 0;
}
-static inline void pinmux_init_pinctrl_handle(struct pinctrl *p)
-{
-}
-
-static inline int pinmux_apply_muxmap(struct pinctrl_dev *pctldev,
- struct pinctrl *p,
- struct device *dev,
- const char *devname,
- struct pinctrl_map const *map)
+static inline int pinmux_map_to_setting(struct pinctrl_map const *map,
+ struct pinctrl_setting *setting)
{
return 0;
}
-static inline void pinmux_put(struct pinctrl *p)
+static inline void pinmux_free_setting(struct pinctrl_setting const *setting)
{
}
-static inline int pinmux_enable(struct pinctrl *p)
+static inline int pinmux_enable_setting(struct pinctrl_setting const *setting)
{
+ return 0;
}
-static inline void pinmux_disable(struct pinctrl *p)
+static inline void pinmux_disable_setting(
+ struct pinctrl_setting const *setting)
{
}