diff options
| -rw-r--r-- | drivers/pinctrl/pinctrl-uclass.c | 40 | ||||
| -rw-r--r-- | include/dm/pinctrl.h | 60 |
2 files changed, 91 insertions, 9 deletions
diff --git a/drivers/pinctrl/pinctrl-uclass.c b/drivers/pinctrl/pinctrl-uclass.c index d96c201e83..58001ef572 100644 --- a/drivers/pinctrl/pinctrl-uclass.c +++ b/drivers/pinctrl/pinctrl-uclass.c @@ -11,6 +11,7 @@ #include <dm/device.h> #include <dm/lists.h> #include <dm/pinctrl.h> +#include <dm/root.h> #include <dm/uclass.h> DECLARE_GLOBAL_DATA_PTR; @@ -159,7 +160,8 @@ static int pinctrl_select_state_full(struct udevice *dev, const char *statename) static int pinconfig_post_bind(struct udevice *dev) { - return 0; + /* Scan the bus for devices */ + return dm_scan_fdt_node(dev, gd->fdt_blob, dev->of_offset, false); } #endif @@ -205,6 +207,31 @@ int pinctrl_select_state(struct udevice *dev, const char *statename) return 0; } +int pinctrl_request(struct udevice *dev, int func, int flags) +{ + struct pinctrl_ops *ops = pinctrl_get_ops(dev); + + if (!ops->request) + return -ENOSYS; + + return ops->request(dev, func, flags); +} + +int pinctrl_request_noflags(struct udevice *dev, int func) +{ + return pinctrl_request(dev, func, 0); +} + +int pinctrl_get_periph_id(struct udevice *dev, struct udevice *periph) +{ + struct pinctrl_ops *ops = pinctrl_get_ops(dev); + + if (!ops->get_periph_id) + return -ENOSYS; + + return ops->get_periph_id(dev, periph); +} + /** * pinconfig_post-bind() - post binding for PINCTRL uclass * Recursively bind child nodes as pinconfig devices in case of full pinctrl. @@ -222,15 +249,10 @@ static int pinctrl_post_bind(struct udevice *dev) } /* - * If set_state callback is set, we assume this pinctrl driver is the - * full implementation. In this case, its child nodes should be bound - * so that peripheral devices can easily search in parent devices - * during later DT-parsing. + * The pinctrl driver child nodes should be bound so that peripheral + * devices can easily search in parent devices during later DT-parsing. */ - if (ops->set_state) - return pinconfig_post_bind(dev); - - return 0; + return pinconfig_post_bind(dev); } UCLASS_DRIVER(pinctrl) = { diff --git a/include/dm/pinctrl.h b/include/dm/pinctrl.h index bc6fdb4a1f..f6025f618e 100644 --- a/include/dm/pinctrl.h +++ b/include/dm/pinctrl.h @@ -87,7 +87,33 @@ struct pinctrl_ops { int (*pinconf_group_set)(struct udevice *dev, unsigned group_selector, unsigned param, unsigned argument); int (*set_state)(struct udevice *dev, struct udevice *config); + + /* for pinctrl-simple */ int (*set_state_simple)(struct udevice *dev, struct udevice *periph); + /** + * request() - Request a particular pinctrl function + * + * This activates the selected function. + * + * @dev: Device to adjust (UCLASS_PINCTRL) + * @func: Function number (driver-specific) + * @return 0 if OK, -ve on error + */ + int (*request)(struct udevice *dev, int func, int flags); + + /** + * get_periph_id() - get the peripheral ID for a device + * + * This generally looks at the peripheral's device tree node to work + * out the peripheral ID. The return value is normally interpreted as + * enum periph_id. so long as this is defined by the platform (which it + * should be). + * + * @dev: Pinctrl device to use for decoding + * @periph: Device to check + * @return peripheral ID of @periph, or -ENOENT on error + */ + int (*get_periph_id)(struct udevice *dev, struct udevice *periph); }; #define pinctrl_get_ops(dev) ((struct pinctrl_ops *)(dev)->driver->ops) @@ -224,4 +250,38 @@ static inline int pinctrl_select_state(struct udevice *dev, } #endif +/** + * pinctrl_request() - Request a particular pinctrl function + * + * @dev: Device to check (UCLASS_PINCTRL) + * @func: Function number (driver-specific) + * @flags: Flags (driver-specific) + * @return 0 if OK, -ve on error + */ +int pinctrl_request(struct udevice *dev, int func, int flags); + +/** + * pinctrl_request_noflags() - Request a particular pinctrl function + * + * This is similar to pinctrl_request() but uses 0 for @flags. + * + * @dev: Device to check (UCLASS_PINCTRL) + * @func: Function number (driver-specific) + * @return 0 if OK, -ve on error + */ +int pinctrl_request_noflags(struct udevice *dev, int func); + +/** + * pinctrl_get_periph_id() - get the peripheral ID for a device + * + * This generally looks at the peripheral's device tree node to work out the + * peripheral ID. The return value is normally interpreted as enum periph_id. + * so long as this is defined by the platform (which it should be). + * + * @dev: Pinctrl device to use for decoding + * @periph: Device to check + * @return peripheral ID of @periph, or -ENOENT on error + */ +int pinctrl_get_periph_id(struct udevice *dev, struct udevice *periph); + #endif /* __PINCTRL_H */ |