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[PATCH] I2C: Resurrect i2c_smbus_write_i2c_block_data.

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Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Jean Delvare 2006-01-09 15:19:18 +11:00 committed by Greg Kroah-Hartman
parent 8254fc4afc
commit 21bbd69182
2 changed files with 18 additions and 0 deletions
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15
drivers/i2c/i2c-core.c
View file

@ -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 /* Simulate a SMBus command using the i2c protocol
No checking of parameters is done! */ No checking of parameters is done! */
static s32 i2c_smbus_xfer_emulated(struct i2c_adapter * adapter, u16 addr, 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_word_data);
EXPORT_SYMBOL(i2c_smbus_write_block_data); EXPORT_SYMBOL(i2c_smbus_write_block_data);
EXPORT_SYMBOL(i2c_smbus_read_i2c_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_AUTHOR("Simon G. Vogl <simon@tk.uni-linz.ac.at>");
MODULE_DESCRIPTION("I2C-Bus main module"); MODULE_DESCRIPTION("I2C-Bus main module");

3
include/linux/i2c.h
View file

@ -100,6 +100,9 @@ extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
/* Returns the number of read bytes */ /* Returns the number of read bytes */
extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client, extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
u8 command, u8 *values); 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 * A driver is capable of handling one or more physical devices present on