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[media] adv7604: add hdmi driver strength adjustment 

The driver strength is board dependent, so set it from the platform_data.

Signed-off-by: Mikhail Khelik <mkhelik@cisco.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Mikhail Khelik 2013-12-20 05:12:00 -03:00 committed by Mauro Carvalho Chehab
parent 4a31a93a71
commit f31b62e14a
2 changed files with 17 additions and 1 deletions
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7
drivers/media/i2c/adv7604.c
View File

@ -1942,7 +1942,12 @@ static int adv7604_core_init(struct v4l2_subdev *sd)
/* TODO from platform data */
cp_write(sd, 0x69, 0x30); /* Enable CP CSC */
io_write(sd, 0x06, 0xa6); /* positive VS and HS */
io_write(sd, 0x14, 0x7f); /* Drive strength adjusted to max */
/* Adjust drive strength */
io_write(sd, 0x14, 0x40 | pdata->dr_str_data << 4 |
pdata->dr_str_clk << 2 |
pdata->dr_str_sync);
cp_write(sd, 0xba, (pdata->hdmi_free_run_mode << 1) | 0x01); /* HDMI free run */
cp_write(sd, 0xf3, 0xdc); /* Low threshold to enter/exit free run mode */
cp_write(sd, 0xf9, 0x23); /* STDI ch. 1 - LCVS change threshold -

11
include/media/adv7604.h
View File

@ -78,6 +78,12 @@ enum adv7604_op_format_sel {
ADV7604_OP_FORMAT_SEL_SDR_ITU656_24_MODE2 = 0x8a,
};
enum adv7604_drive_strength {
ADV7604_DR_STR_MEDIUM_LOW = 1,
ADV7604_DR_STR_MEDIUM_HIGH = 2,
ADV7604_DR_STR_HIGH = 3,
};
/* Platform dependent definition */
struct adv7604_platform_data {
/* connector - HDMI or DVI? */
@ -110,6 +116,11 @@ struct adv7604_platform_data {
unsigned replicate_av_codes:1;
unsigned invert_cbcr:1;
/* IO register 0x14 */
enum adv7604_drive_strength dr_str_data;
enum adv7604_drive_strength dr_str_clk;
enum adv7604_drive_strength dr_str_sync;
/* IO register 0x30 */
unsigned output_bus_lsb_to_msb:1;