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Add a non-blocking interface to the I2C code, part 6

PATCH New Corey Minyard 1 participant 1 message Mar 2, 2005 I2C

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Corey Minyard

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PATCH 1/1 Add a non-blocking interface to the I2C code, part 6

See part 1 for details on what this does...

This adds back in the i2c_smbus_read_block_data() function which is needed by the IPMI SMB driver (coming soon).

Signed-off-by Corey Minyard <[email protected]>
drivers/i2c/i2c-core.c +18 -0
Index: linux-2.6.11-rc5-mm1/drivers/i2c/i2c-core.c
===================================================================
@@ -1250,6 +1250,23 @@
 }
 
 /* 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;
+	int i;
+	if (i2c_smbus_xfer(client->adapter,client->addr,client->flags,
+	                      I2C_SMBUS_READ,command,
+	                      I2C_SMBUS_BLOCK_DATA,&data))
+		return -1;
+	else {
+		for (i = 1; i <= data.block[0]; i++)
+			values[i-1] = data.block[i];
+		return data.block[0];
+	}
+}
+
+/* Returns the number of read bytes */
 s32 i2c_smbus_read_i2c_block_data(struct i2c_client *client, u8 command, u8 *values)
 {
 	union i2c_smbus_data data;

@@ -1731,6 +1748,7 @@
 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_block_data);
 EXPORT_SYMBOL(i2c_smbus_read_i2c_block_data);
 
 EXPORT_SYMBOL(i2c_non_blocking_capable);
include/linux/i2c.h +2 -0
Index: linux-2.6.11-rc5-mm1/include/linux/i2c.h
===================================================================
@@ -99,6 +99,8 @@
 extern s32 i2c_smbus_write_block_data(struct i2c_client * client,
 				      u8 command, u8 length,
 				      u8 *values);
+extern s32 i2c_smbus_read_block_data(struct i2c_client * client,
+				     u8 command, u8 *values);
 extern s32 i2c_smbus_read_i2c_block_data(struct i2c_client * client,
 					 u8 command, u8 *values);