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| author | Jean Delvare <khali@linux-fr.org> | 2006-03-22 07:48:36 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-03-23 15:24:13 +0100 |
| commit | f49a5eaea6d7b3ed3d01ca9388eac9e7e5bf6025 (patch) | |
| tree | b6aa64eaea8d47dd4419d76d170702242058eb66 /drivers/media/video/bt856.c | |
| parent | V4L/DVB (3568d): saa7111.c fix (diff) | |
| download | linux-f49a5eaea6d7b3ed3d01ca9388eac9e7e5bf6025.tar.xz linux-f49a5eaea6d7b3ed3d01ca9388eac9e7e5bf6025.zip | |
V4L/DVB (3568e): bt856: Spare memory
The bt856 driver has a register cache much larger than needed. We really only
write to 3 registers, so a 32-byte cache is a bit too much. We can be just as
efficient with a 6-byte cache. We could even do with a 3-byte cache, but at
the cost of additional arithmetics arguably not worth the spared 3 bytes.
Also, 4 of the 6 other members of the bt856 data structure were not used
anywhere, so we can as well drop them for an additional 16 bytes of memory
spared.
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>
Diffstat (limited to 'drivers/media/video/bt856.c')
| -rw-r--r-- | drivers/media/video/bt856.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/media/video/bt856.c b/drivers/media/video/bt856.c index 909b593530ed..7c68937853b0 100644 --- a/drivers/media/video/bt856.c +++ b/drivers/media/video/bt856.c @@ -71,17 +71,14 @@ MODULE_PARM_DESC(debug, "Debug level (0-1)"); /* ----------------------------------------------------------------------- */ -#define REG_OFFSET 0xCE +#define REG_OFFSET 0xDA +#define BT856_NR_REG 6 struct bt856 { - unsigned char reg[32]; + unsigned char reg[BT856_NR_REG]; int norm; int enable; - int bright; - int contrast; - int hue; - int sat; }; #define I2C_BT856 0x88 @@ -120,8 +117,8 @@ bt856_dump (struct i2c_client *client) struct bt856 *encoder = i2c_get_clientdata(client); printk(KERN_INFO "%s: register dump:", I2C_NAME(client)); - for (i = 0xd6; i <= 0xde; i += 2) - printk(" %02x", encoder->reg[i - REG_OFFSET]); + for (i = 0; i < BT856_NR_REG; i += 2) + printk(" %02x", encoder->reg[i]); printk("\n"); } |