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V4L/DVB (3568i): adv7175: Drop unused register cache

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Drop the adv7175 register cache, as it is only written to and never read back
from.  This saves 128 bytes of memory and slightly speeds up the register
writes.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Jean Delvare 2006-03-22 03:48:34 -03:00 committed by Mauro Carvalho Chehab
parent 2f8de1a106
commit 2467a670ee
1 changed files with 2 additions and 8 deletions
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10
drivers/media/video/adv7175.c
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@ -68,8 +68,6 @@ MODULE_PARM_DESC(debug, "Debug level (0-1)");
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
struct adv7175 { struct adv7175 {
unsigned char reg[128];
int norm; int norm;
int input; int input;
int enable; int enable;
@ -95,9 +93,6 @@ adv7175_write (struct i2c_client *client,
u8 reg, u8 reg,
u8 value) u8 value)
{ {
struct adv7175 *encoder = i2c_get_clientdata(client);
encoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value); return i2c_smbus_write_byte_data(client, reg, value);
} }
@ -120,7 +115,6 @@ adv7175_write_block (struct i2c_client *client,
* the adapter understands raw I2C */ * the adapter understands raw I2C */
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
/* do raw I2C, not smbus compatible */ /* do raw I2C, not smbus compatible */
struct adv7175 *encoder = i2c_get_clientdata(client);
struct i2c_msg msg; struct i2c_msg msg;
u8 block_data[32]; u8 block_data[32];
@ -131,8 +125,8 @@ adv7175_write_block (struct i2c_client *client,
msg.len = 0; msg.len = 0;
block_data[msg.len++] = reg = data[0]; block_data[msg.len++] = reg = data[0];
do { do {
block_data[msg.len++] = block_data[msg.len++] = data[1];
encoder->reg[reg++] = data[1]; reg++;
len -= 2; len -= 2;
data += 2; data += 2;
} while (len >= 2 && data[0] == reg && } while (len >= 2 && data[0] == reg &&