[PATCH 6.1 031/236] pinctrl: Introduce struct pinfunction and PINCTRL_PINFUNCTION() macro

Greg Kroah-Hartman
2024-05-14T11:28:50Z

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit 443a0a0f0cf4f432c7af6654b7f2f920d411d379 ]

There are many pin control drivers define their own data type for
pin function representation which is the same or embed the same data
as newly introduced one. Provide the data type and convenient macro
for all pin control drivers.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Stable-dep-of: fed6d9a8e6a6 ("pinctrl: baytrail: Fix selecting gpio pinctrl state")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
include/linux/pinctrl/pinctrl.h | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/include/linux/pinctrl/pinctrl.h b/include/linux/pinctrl/pinctrl.h
index 487117ccb1bc2..fb25085d09224 100644
--- a/include/linux/pinctrl/pinctrl.h
+++ b/include/linux/pinctrl/pinctrl.h
@@ -206,6 +206,26 @@ extern int pinctrl_get_group_pins(struct pinctrl_dev *pctldev,
const char *pin_group, const unsigned **pins,
unsigned *num_pins);

+/**
+ * struct pinfunction - Description about a function
+ * @name: Name of the function
+ * @groups: An array of groups for this function
+ * @ngroups: Number of groups in @groups
+ */
+struct pinfunction {
+ const char *name;
+ const char * const *groups;
+ size_t ngroups;
+};
+
+/* Convenience macro to define a single named pinfunction */
+#define PINCTRL_PINFUNCTION(_name, _groups, _ngroups) \
+(struct pinfunction) { \
+ .name = (_name), \
+ .groups = (_groups), \
+ .ngroups = (_ngroups), \
+ }
+
#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_PINCTRL)
extern struct pinctrl_dev *of_pinctrl_get(struct device_node *np);
#else
--
2.43.0