diff options
| -rw-r--r-- | drivers/i2c/i2c-core.c | 15 | ||||
| -rw-r--r-- | include/linux/i2c.h | 3 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index 0ce58b50604..1a2c9ab5d9e 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -946,6 +946,20 @@ s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, u8 command, u8 *val } } +s32 i2c_smbus_write_i2c_block_data(struct i2c_client *client, u8 command, + u8 length, u8 *values) +{ + union i2c_smbus_data data; + + if (length > I2C_SMBUS_BLOCK_MAX) + length = I2C_SMBUS_BLOCK_MAX; + data.block[0] = length; + memcpy(data.block + 1, values, length); + return i2c_smbus_xfer(client->adapter, client->addr, client->flags, + I2C_SMBUS_WRITE, command, + I2C_SMBUS_I2C_BLOCK_DATA, &data); +} + /* Simulate a SMBus command using the i2c protocol No checking of parameters is done! */ static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr, @@ -1150,6 +1164,7 @@ EXPORT_SYMBOL(i2c_smbus_read_word_data); EXPORT_SYMBOL(i2c_smbus_write_word_data); EXPORT_SYMBOL(i2c_smbus_write_block_data); EXPORT_SYMBOL(i2c_smbus_read_i2c_block_data); +EXPORT_SYMBOL(i2c_smbus_write_i2c_block_data); MODULE_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>"); MODULE_DESCRIPTION("I2C-Bus main module"); diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 7863a59bd59..63f1d63cc1d 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -100,6 +100,9 @@ extern s32 i2c_smbus_write_block_data(struct i2c_client * client, /* Returns the number of read bytes */ extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, u8 command, u8 *values); +extern s32 i2c_smbus_write_i2c_block_data(struct i2c_client * client, + u8 command, u8 length, + u8 *values); /* * A driver is capable of handling one or more physical devices present on |