Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b86a1bc8e39641d0c4676943b77a3486ee296db8
Commit: b86a1bc8e39641d0c4676943b77a3486ee296db8
Parent: 7d054817b780e664bed6701b2aa637718e1905b7
Author: Jean Delvare <[EMAIL PROTECTED]>
AuthorDate: Tue May 1 23:26:34 2007 +0200
Committer: Jean Delvare <[EMAIL PROTECTED]>
CommitDate: Tue May 1 23:26:34 2007 +0200
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 <[EMAIL PROTECTED]>
---
drivers/i2c/i2c-core.c | 16 ++++++++++++++++
include/linux/i2c.h | 3 +++
2 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index a58f89a..64f8e56 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)
}
EXPORT_SYMBOL(i2c_smbus_write_word_data);
+/* Returns the number of read bytes */
+s32 i2c_smbus_read_block_data(struct i2c_client *client, u8 command,
+ u8 *values)
+{
+ union i2c_smbus_data data;
+
+ if (i2c_smbus_xfer(client->adapter, client->addr, client->flags,
+ I2C_SMBUS_READ, command,
+ I2C_SMBUS_BLOCK_DATA, &data))
+ return -1;
+
+ memcpy(values, &data.block[1], data.block[0]);
+ return data.block[0];
+}
+EXPORT_SYMBOL(i2c_smbus_read_block_data);
+
s32 i2c_smbus_write_block_data(struct i2c_client *client, u8 command,
u8 length, const u8 *values)
{
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 3fe2ad3..cae7d61 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -82,6 +82,9 @@ extern s32 i2c_smbus_write_byte_data(struct i2c_client *
client,
extern s32 i2c_smbus_read_word_data(struct i2c_client * client, u8 command);
extern s32 i2c_smbus_write_word_data(struct i2c_client * client,
u8 command, u16 value);
+/* Returns the number of read bytes */
+extern s32 i2c_smbus_read_block_data(struct i2c_client *client,
+ u8 command, u8 *values);
extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
u8 command, u8 length,
const u8 *values);
-
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