diff options
author | Jean Delvare <khali@linux-fr.org> | 2007-05-01 17:26:34 -0400 |
---|---|---|
committer | Jean Delvare <khali@hyperion.delvare> | 2007-05-01 17:26:34 -0400 |
commit | b86a1bc8e39641d0c4676943b77a3486ee296db8 (patch) | |
tree | 19041f82e3322c4779845152ff00732fff60e7ff /drivers/i2c/i2c-core.c | |
parent | 7d054817b780e664bed6701b2aa637718e1905b7 (diff) |
i2c: Restore i2c_smbus_read_block_data
Add back the i2c_smbus_read_block_data helper function, it is needed
by the upcoming lm93 hardware monitoring driver and possibly others.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/i2c/i2c-core.c')
-rw-r--r-- | drivers/i2c/i2c-core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index a58f89a6418..64f8e56d300 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c | |||
@@ -1298,6 +1298,22 @@ s32 i2c_smbus_write_word_data(struct i2c_client *client, u8 command, u16 value) | |||
1298 | } | 1298 | } |
1299 | EXPORT_SYMBOL(i2c_smbus_write_word_data); | 1299 | EXPORT_SYMBOL(i2c_smbus_write_word_data); |
1300 | 1300 | ||
1301 | /* Returns the number of read bytes */ | ||
1302 | s32 i2c_smbus_read_block_data(struct i2c_client *client, u8 command, | ||
1303 | u8 *values) | ||
1304 | { | ||
1305 | union i2c_smbus_data data; | ||
1306 | |||
1307 | if (i2c_smbus_xfer(client->adapter, client->addr, client->flags, | ||
1308 | I2C_SMBUS_READ, command, | ||
1309 | I2C_SMBUS_BLOCK_DATA, &data)) | ||
1310 | return -1; | ||
1311 | |||
1312 | memcpy(values, &data.block[1], data.block[0]); | ||
1313 | return data.block[0]; | ||
1314 | } | ||
1315 | EXPORT_SYMBOL(i2c_smbus_read_block_data); | ||
1316 | |||
1301 | s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command, | 1317 | s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command, |
1302 | u8 length, const u8 *values) | 1318 | u8 length, const u8 *values) |
1303 | { | 1319 | { |