From: Corey Minyard <minyard@acm.org>
To: Greg KH <greg@kroah.com>, lkml <linux-kernel@vger.kernel.org>,
Sensors <sensors@stimpy.netroedge.com>
Subject: [PATCH] Add a non-blocking interface to the I2C code, part 6
Date: Wed, 02 Mar 2005 14:04:09 -0600 [thread overview]
Message-ID: <42261C39.30000@acm.org> (raw)
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See part 1 for details on what this does...
[-- Attachment #2: i2c_add_read_block.diff --]
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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 <minyard@acm.org>
Index: linux-2.6.11-rc5-mm1/drivers/i2c/i2c-core.c
===================================================================
--- linux-2.6.11-rc5-mm1.orig/drivers/i2c/i2c-core.c
+++ 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);
Index: linux-2.6.11-rc5-mm1/include/linux/i2c.h
===================================================================
--- linux-2.6.11-rc5-mm1.orig/include/linux/i2c.h
+++ 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);
reply other threads:[~2005-03-02 20:13 UTC|newest]
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