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Diffstat (limited to 'include/linux/pinctrl/pinmux.h')
-rw-r--r--include/linux/pinctrl/pinmux.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/include/linux/pinctrl/pinmux.h b/include/linux/pinctrl/pinmux.h
index 511bda9ed..ace60d775 100644
--- a/include/linux/pinctrl/pinmux.h
+++ b/include/linux/pinctrl/pinmux.h
@@ -56,6 +56,9 @@ struct pinctrl_dev;
* depending on whether the GPIO is configured as input or output,
* a direction selector function may be implemented as a backing
* to the GPIO controllers that need pin muxing.
+ * @strict: do not allow simultaneous use of the same pin for GPIO and another
+ * function. Check both gpio_owner and mux_owner strictly before approving
+ * the pin request.
*/
struct pinmux_ops {
int (*request) (struct pinctrl_dev *pctldev, unsigned offset);
@@ -66,7 +69,7 @@ struct pinmux_ops {
int (*get_function_groups) (struct pinctrl_dev *pctldev,
unsigned selector,
const char * const **groups,
- unsigned * const num_groups);
+ unsigned *num_groups);
int (*set_mux) (struct pinctrl_dev *pctldev, unsigned func_selector,
unsigned group_selector);
int (*gpio_request_enable) (struct pinctrl_dev *pctldev,
@@ -79,6 +82,7 @@ struct pinmux_ops {
struct pinctrl_gpio_range *range,
unsigned offset,
bool input);
+ bool strict;
};
#endif /* CONFIG_PINMUX */