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| author | Kuninori Morimoto <morimoto.kuninori@renesas.com> | 2009-12-11 15:34:51 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-16 12:27:25 +0100 |
| commit | 207970838186b2606896b03f590b89b13570a727 (patch) | |
| tree | ac595464f71cad220312350343972a8785494674 /drivers/media | |
| parent | V4L/DVB (13655): tw9910: Add power control (diff) | |
| download | linux-207970838186b2606896b03f590b89b13570a727.tar.xz linux-207970838186b2606896b03f590b89b13570a727.zip | |
V4L/DVB (13656): tw9910: tw9910_set_hsync clean up
tw9910_set_hsync should use tw9910_mask_set to set bits 2-0
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/tw9910.c | 37 |
1 files changed, 16 insertions, 21 deletions
diff --git a/drivers/media/video/tw9910.c b/drivers/media/video/tw9910.c index c21acedcf027..2256ba6e6147 100644 --- a/drivers/media/video/tw9910.c +++ b/drivers/media/video/tw9910.c @@ -371,6 +371,19 @@ static struct tw9910_priv *to_tw9910(const struct i2c_client *client) subdev); } +static int tw9910_mask_set(struct i2c_client *client, u8 command, + u8 mask, u8 set) +{ + s32 val = i2c_smbus_read_byte_data(client, command); + if (val < 0) + return val; + + val &= ~mask; + val |= set & mask; + + return i2c_smbus_write_byte_data(client, command, val); +} + static int tw9910_set_scale(struct i2c_client *client, const struct tw9910_scale_ctrl *scale) { @@ -445,14 +458,9 @@ static int tw9910_set_hsync(struct i2c_client *client, return ret; /* bit 2 - 0 */ - ret = i2c_smbus_read_byte_data(client, HSLOWCTL); - if (ret < 0) - return ret; - - ret = i2c_smbus_write_byte_data(client, HSLOWCTL, - (ret & 0x88) | - (hsync->start & 0x0007) << 4 | - (hsync->end & 0x0007)); + ret = tw9910_mask_set(client, HSLOWCTL, 0x77, + (hsync->start & 0x0007) << 4 | + (hsync->end & 0x0007)); return ret; } @@ -471,19 +479,6 @@ static int tw9910_write_array(struct i2c_client *client, return 0; } -static int tw9910_mask_set(struct i2c_client *client, u8 command, - u8 mask, u8 set) -{ - s32 val = i2c_smbus_read_byte_data(client, command); - if (val < 0) - return val; - - val &= ~mask; - val |= set & mask; - - return i2c_smbus_write_byte_data(client, command, val); -} - static void tw9910_reset(struct i2c_client *client) { tw9910_mask_set(client, ACNTL1, SRESET, SRESET); |