Commit f31b62e1 authored by Mikhail Khelik's avatar Mikhail Khelik Committed by Mauro Carvalho Chehab
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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: default avatarMikhail Khelik <mkhelik@cisco.com>
Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent 4a31a93a

drivers/media/i2c/adv7604.c

+6 −1
Original line number Diff line number Diff line
@@ -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 -

include/media/adv7604.h

+11 −0
Original line number Diff line number Diff line
@@ -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;