diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/i2c-of-prober.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/linux/i2c-of-prober.h b/include/linux/i2c-of-prober.h index df95aa6ad90e..bb6d47f50ee5 100644 --- a/include/linux/i2c-of-prober.h +++ b/include/linux/i2c-of-prober.h @@ -9,6 +9,7 @@ #define _LINUX_I2C_OF_PROBER_H #include <linux/kconfig.h> +#include <linux/types.h> struct device; struct device_node; @@ -85,6 +86,7 @@ int i2c_of_probe_component(struct device *dev, const struct i2c_of_probe_cfg *cf * * The following helpers are provided: * * i2c_of_probe_simple_enable() + * * i2c_of_probe_simple_cleanup_early() * * i2c_of_probe_simple_cleanup() */ @@ -92,14 +94,31 @@ int i2c_of_probe_component(struct device *dev, const struct i2c_of_probe_cfg *cf * struct i2c_of_probe_simple_opts - Options for simple I2C component prober callbacks * @res_node_compatible: Compatible string of device node to retrieve resources from. * @supply_name: Name of regulator supply. + * @gpio_name: Name of GPIO. NULL if no GPIO line is used. Empty string ("") if GPIO + * line is unnamed. * @post_power_on_delay_ms: Delay after regulators are powered on. Passed to msleep(). + * @post_gpio_config_delay_ms: Delay after GPIO is configured. Passed to msleep(). + * @gpio_assert_to_enable: %true if GPIO should be asserted, i.e. set to logical high, + * to enable the component. + * + * This describes power sequences common for the class of components supported by the + * simple component prober: + * * @gpio_name is configured to the non-active setting according to @gpio_assert_to_enable. + * * @supply_name regulator supply is enabled. + * * Wait for @post_power_on_delay_ms to pass. + * * @gpio_name is configured to the active setting according to @gpio_assert_to_enable. + * * Wait for @post_gpio_config_delay_ms to pass. */ struct i2c_of_probe_simple_opts { const char *res_node_compatible; const char *supply_name; + const char *gpio_name; unsigned int post_power_on_delay_ms; + unsigned int post_gpio_config_delay_ms; + bool gpio_assert_to_enable; }; +struct gpio_desc; struct regulator; struct i2c_of_probe_simple_ctx { @@ -107,9 +126,11 @@ struct i2c_of_probe_simple_ctx { const struct i2c_of_probe_simple_opts *opts; /* private: internal fields for helpers. */ struct regulator *supply; + struct gpio_desc *gpiod; }; int i2c_of_probe_simple_enable(struct device *dev, struct device_node *bus_node, void *data); +void i2c_of_probe_simple_cleanup_early(struct device *dev, void *data); void i2c_of_probe_simple_cleanup(struct device *dev, void *data); extern struct i2c_of_probe_ops i2c_of_probe_simple_ops; |