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authorTony Lindgren <tony@atomide.com>2016-12-27 09:20:01 -0800
committerLinus Walleij <linus.walleij@linaro.org>2017-01-03 09:26:18 +0100
commita76edc89b100e4fefb2a5c00cd8cd557437659e7 (patch)
tree0131d6cad80d2ed78c97b485b0a2d9cf2a446877 /drivers/pinctrl/pinmux.h
parentc033a718f615b6b3ddc83ce3e0a217c30bd09cb5 (diff)
pinctrl: core: Add generic pinctrl functions for managing groups
We can add generic helpers for function handling for cases where the pin controller driver does not need to use static arrays. Signed-off-by: Tony Lindgren <tony@atomide.com> [Renamed the Kconfig item and moved things around] Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinmux.h')
-rw-r--r--drivers/pinctrl/pinmux.h56
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinmux.h b/drivers/pinctrl/pinmux.h
index d1a98b1c9fce..248d8ea30e26 100644
--- a/drivers/pinctrl/pinmux.h
+++ b/drivers/pinctrl/pinmux.h
@@ -111,3 +111,59 @@ static inline void pinmux_init_device_debugfs(struct dentry *devroot,
}
#endif
+
+#ifdef CONFIG_GENERIC_PINMUX_FUNCTIONS
+
+/**
+ * struct function_desc - generic function descriptor
+ * @name: name of the function
+ * @group_names: array of pin group names
+ * @num_group_names: number of pin group names
+ * @data: pin controller driver specific data
+ */
+struct function_desc {
+ const char *name;
+ const char **group_names;
+ int num_group_names;
+ void *data;
+};
+
+int pinmux_generic_get_function_count(struct pinctrl_dev *pctldev);
+
+const char *
+pinmux_generic_get_function_name(struct pinctrl_dev *pctldev,
+ unsigned int selector);
+
+int pinmux_generic_get_function_groups(struct pinctrl_dev *pctldev,
+ unsigned int selector,
+ const char * const **groups,
+ unsigned * const num_groups);
+
+struct function_desc *pinmux_generic_get_function(struct pinctrl_dev *pctldev,
+ unsigned int selector);
+
+int pinmux_generic_add_function(struct pinctrl_dev *pctldev,
+ const char *name,
+ const char **groups,
+ unsigned const num_groups,
+ void *data);
+
+int pinmux_generic_remove_function(struct pinctrl_dev *pctldev,
+ unsigned int selector);
+
+static inline int
+pinmux_generic_remove_last_function(struct pinctrl_dev *pctldev)
+{
+ return pinmux_generic_remove_function(pctldev,
+ pctldev->num_functions - 1);
+}
+
+void pinmux_generic_free_functions(struct pinctrl_dev *pctldev);
+
+#else
+
+static inline void pinmux_generic_free_functions(struct pinctrl_dev *pctldev)
+{
+}
+
+#endif /* CONFIG_GENERIC_PINMUX_FUNCTIONS */