Messages in this thread Patch in this message | | | Subject | Re: i2c/ smbus question | From | Benjamin Herrenschmidt <> | Date | Mon, 09 Jan 2006 15:19:18 +1100 |
| |
Resurrect i2c_smbus_write_i2c_block_data.
Signed-off-by: Jean Delvare <khali@linux-fr.org> --- > Sure, Jean, care to resend it to me, as it's now lost in my archives > somewhere :)
here it is :-)
drivers/i2c/i2c-core.c | 15 +++++++++++++++ include/linux/i2c.h | 3 +++ 2 files changed, 18 insertions(+)
--- linux-2.6.15-git.orig/drivers/i2c/i2c-core.c 2006-01-08 10:55:58.000000000 +0100 +++ linux-2.6.15-git/drivers/i2c/i2c-core.c 2006-01-08 11:17:57.000000000 +0100 @@ -948,6 +948,20 @@ } } +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, @@ -1152,6 +1166,7 @@ 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"); --- linux-2.6.15-git.orig/include/linux/i2c.h 2006-01-08 10:56:08.000000000 +0100 +++ linux-2.6.15-git/include/linux/i2c.h 2006-01-08 11:02:00.000000000 +0100 @@ -100,6 +100,9 @@ /* 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 -- Jean Delvare
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |