From d2653e92732bd3911feff6bee5e23dbf959381db Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Tue, 29 Apr 2008 23:11:39 +0200 Subject: i2c: Add support for device alias names Based on earlier work by Jon Smirl and Jochen Friedrich. This patch allows new-style i2c chip drivers to have alias names using the official kernel aliasing system and MODULE_DEVICE_TABLE(). At this point, the old i2c driver binding scheme (driver_name/type) is still supported. Signed-off-by: Jean Delvare Cc: Jochen Friedrich Cc: Jon Smirl Cc: Kay Sievers --- include/linux/i2c.h | 5 ++--- include/linux/mod_devicetable.h | 11 +++++++++++ include/media/v4l2-common.h | 4 +++- include/media/v4l2-i2c-drv-legacy.h | 2 +- include/media/v4l2-i2c-drv.h | 2 +- 5 files changed, 18 insertions(+), 6 deletions(-) (limited to 'include') diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 365e0df3646..89cb34d5b0b 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -126,7 +126,7 @@ struct i2c_driver { * With the driver model, device enumeration is NEVER done by drivers; * it's done by infrastructure. (NEW STYLE DRIVERS ONLY) */ - int (*probe)(struct i2c_client *); + int (*probe)(struct i2c_client *, const struct i2c_device_id *); int (*remove)(struct i2c_client *); /* driver model interfaces that don't relate to enumeration */ @@ -140,11 +140,10 @@ struct i2c_driver { int (*command)(struct i2c_client *client,unsigned int cmd, void *arg); struct device_driver driver; + const struct i2c_device_id *id_table; }; #define to_i2c_driver(d) container_of(d, struct i2c_driver, driver) -#define I2C_NAME_SIZE 20 - /** * struct i2c_client - represent an I2C slave device * @flags: I2C_CLIENT_TEN indicates the device uses a ten bit chip address; diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index 139d49d2f07..d73eceaa7af 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -368,4 +368,15 @@ struct virtio_device_id { }; #define VIRTIO_DEV_ANY_ID 0xffffffff +/* i2c */ + +#define I2C_NAME_SIZE 20 +#define I2C_MODULE_PREFIX "i2c:" + +struct i2c_device_id { + char name[I2C_NAME_SIZE]; + kernel_ulong_t driver_data; /* Data private to the driver */ +}; + + #endif /* LINUX_MOD_DEVICETABLE_H */ diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index 316a5845313..020d05758bd 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -107,9 +107,11 @@ int v4l2_chip_match_host(u32 id_type, u32 chip_id); struct i2c_driver; struct i2c_adapter; struct i2c_client; +struct i2c_device_id; int v4l2_i2c_attach(struct i2c_adapter *adapter, int address, struct i2c_driver *driver, - const char *name, int (*probe)(struct i2c_client *)); + const char *name, + int (*probe)(struct i2c_client *, const struct i2c_device_id *)); /* ------------------------------------------------------------------------- */ diff --git a/include/media/v4l2-i2c-drv-legacy.h b/include/media/v4l2-i2c-drv-legacy.h index e7645578fc2..347b6f8beb2 100644 --- a/include/media/v4l2-i2c-drv-legacy.h +++ b/include/media/v4l2-i2c-drv-legacy.h @@ -25,7 +25,7 @@ struct v4l2_i2c_driver_data { const char * const name; int driverid; int (*command)(struct i2c_client *client, unsigned int cmd, void *arg); - int (*probe)(struct i2c_client *client); + int (*probe)(struct i2c_client *client, const struct i2c_device_id *id); int (*remove)(struct i2c_client *client); int (*suspend)(struct i2c_client *client, pm_message_t state); int (*resume)(struct i2c_client *client); diff --git a/include/media/v4l2-i2c-drv.h b/include/media/v4l2-i2c-drv.h index 9e4bab27691..7b6f06be795 100644 --- a/include/media/v4l2-i2c-drv.h +++ b/include/media/v4l2-i2c-drv.h @@ -30,7 +30,7 @@ struct v4l2_i2c_driver_data { const char * const name; int driverid; int (*command)(struct i2c_client *client, unsigned int cmd, void *arg); - int (*probe)(struct i2c_client *client); + int (*probe)(struct i2c_client *client, const struct i2c_device_id *id); int (*remove)(struct i2c_client *client); int (*suspend)(struct i2c_client *client, pm_message_t state); int (*resume)(struct i2c_client *client); -- cgit v1.2.3