diff options
Diffstat (limited to 'include/linux/i2c.h')
| -rw-r--r-- | include/linux/i2c.h | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 6422eef428c4..bed8fbb45f31 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -30,6 +30,7 @@ #include <linux/device.h> /* for struct device */ #include <linux/sched.h> /* for completion */ #include <linux/mutex.h> +#include <linux/irqdomain.h> /* for Host Notify IRQ */ #include <linux/of.h> /* for struct device_node */ #include <linux/swab.h> /* for swab16 */ #include <uapi/linux/i2c.h> @@ -50,6 +51,7 @@ enum i2c_slave_event; typedef int (*i2c_slave_cb_t)(struct i2c_client *, enum i2c_slave_event, u8 *); struct module; +struct property_entry; #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) /* @@ -135,7 +137,8 @@ enum i2c_alert_protocol { * struct i2c_driver - represent an I2C device driver * @class: What kind of i2c device we instantiate (for detect) * @attach_adapter: Callback for bus addition (deprecated) - * @probe: Callback for device binding + * @probe: Callback for device binding - soon to be deprecated + * @probe_new: New callback for device binding * @remove: Callback for device unbinding * @shutdown: Callback for device shutdown * @alert: Alert callback, for example for the SMBus alert protocol @@ -178,6 +181,11 @@ struct i2c_driver { int (*probe)(struct i2c_client *, const struct i2c_device_id *); int (*remove)(struct i2c_client *); + /* New driver model interface to aid the seamless removal of the + * current probe()'s, more commonly unused than used second parameter. + */ + int (*probe_new)(struct i2c_client *); + /* driver model interfaces that don't relate to enumeration */ void (*shutdown)(struct i2c_client *); @@ -243,6 +251,8 @@ struct i2c_client { extern struct i2c_client *i2c_verify_client(struct device *dev); extern struct i2c_adapter *i2c_verify_adapter(struct device *dev); +extern const struct i2c_device_id *i2c_match_id(const struct i2c_device_id *id, + const struct i2c_client *client); static inline struct i2c_client *kobj_to_i2c_client(struct kobject *kobj) { @@ -273,6 +283,7 @@ enum i2c_slave_event { extern int i2c_slave_register(struct i2c_client *client, i2c_slave_cb_t slave_cb); extern int i2c_slave_unregister(struct i2c_client *client); +extern bool i2c_detect_slave_mode(struct device *dev); static inline int i2c_slave_event(struct i2c_client *client, enum i2c_slave_event event, u8 *val) @@ -290,6 +301,7 @@ static inline int i2c_slave_event(struct i2c_client *client, * @archdata: copied into i2c_client.dev.archdata * @of_node: pointer to OpenFirmware device node * @fwnode: device node supplied by the platform firmware + * @properties: additional device properties for the device * @irq: stored in i2c_client.irq * * I2C doesn't actually support hardware probing, although controllers and @@ -311,6 +323,7 @@ struct i2c_board_info { struct dev_archdata *archdata; struct device_node *of_node; struct fwnode_handle *fwnode; + const struct property_entry *properties; int irq; }; @@ -567,6 +580,8 @@ struct i2c_adapter { struct i2c_bus_recovery_info *bus_recovery_info; const struct i2c_adapter_quirks *quirks; + + struct irq_domain *host_notify_domain; }; #define to_i2c_adapter(d) container_of(d, struct i2c_adapter, dev) @@ -654,6 +669,7 @@ i2c_unlock_adapter(struct i2c_adapter *adapter) #define I2C_CLIENT_TEN 0x10 /* we have a ten bit chip address */ /* Must equal I2C_M_TEN below */ #define I2C_CLIENT_SLAVE 0x20 /* we are the slave */ +#define I2C_CLIENT_HOST_NOTIFY 0x40 /* We want to use I2C host notify */ #define I2C_CLIENT_WAKE 0x80 /* for board_info; true iff can wake */ #define I2C_CLIENT_SCCB 0x9000 /* Use Omnivision SCCB protocol */ /* Must match I2C_M_STOP|IGNORE_NAK */ @@ -739,6 +755,7 @@ static inline u8 i2c_8bit_addr_from_msg(const struct i2c_msg *msg) return (msg->addr << 1) | (msg->flags & I2C_M_RD ? 1 : 0); } +int i2c_handle_smbus_host_notify(struct i2c_adapter *adap, unsigned short addr); /** * module_i2c_driver() - Helper macro for registering a modular I2C driver * @__i2c_driver: i2c_driver struct @@ -774,6 +791,10 @@ extern struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node) /* must call i2c_put_adapter() when done with returned i2c_adapter device */ struct i2c_adapter *of_get_i2c_adapter_by_node(struct device_node *node); +extern const struct of_device_id +*i2c_of_match_device(const struct of_device_id *matches, + struct i2c_client *client); + #else static inline struct i2c_client *of_find_i2c_device_by_node(struct device_node *node) @@ -790,6 +811,14 @@ static inline struct i2c_adapter *of_get_i2c_adapter_by_node(struct device_node { return NULL; } + +static inline const struct of_device_id +*i2c_of_match_device(const struct of_device_id *matches, + struct i2c_client *client) +{ + return NULL; +} + #endif /* CONFIG_OF */ #if IS_ENABLED(CONFIG_ACPI) |