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Commit b80fd2d8 authored by Mauro Carvalho Chehab's avatar Mauro Carvalho Chehab
Browse files

V4L/DVB (12245): em28xx: add support for mt9m001 webcams 



Thanks to Wally <wally@voosen.eu> for bringing the issue and helping
with the tests.

Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 579d3152

drivers/media/video/em28xx/em28xx-cards.c

+41 −0
Original line number Diff line number Diff line
@@ -211,6 +211,7 @@ struct em28xx_board em28xx_boards[] = { 
			.type     = EM28XX_VMUX_COMPOSITE1,

			.vmux     = 0,

			.amux     = EM28XX_AMUX_VIDEO,

			.gpio     = silvercrest_reg_seq,

		} },

	},

	[EM2800_BOARD_UNKNOWN] = {
@@ -1706,6 +1707,32 @@ static inline void em28xx_set_model(struct em28xx *dev) 
				       EM28XX_I2C_FREQ_100_KHZ;

}



/* FIXME: Should be replaced by a proper mt9m001 driver */

static int em28xx_initialize_mt9m001(struct em28xx *dev)

{

	int i;

	unsigned char regs[][3] = {

		{ 0x0d, 0x00, 0x01, },

		{ 0x0d, 0x00, 0x00, },

		{ 0x04, 0x05, 0x00, },	/* hres = 1280 */

		{ 0x03, 0x04, 0x00, },  /* vres = 1024 */

		{ 0x20, 0x11, 0x00, },

		{ 0x06, 0x00, 0x10, },

		{ 0x2b, 0x00, 0x24, },

		{ 0x2e, 0x00, 0x24, },

		{ 0x35, 0x00, 0x24, },

		{ 0x2d, 0x00, 0x20, },

		{ 0x2c, 0x00, 0x20, },

		{ 0x09, 0x0a, 0xd4, },

		{ 0x35, 0x00, 0x57, },

	};



	for (i = 0; i < ARRAY_SIZE(regs); i++)

		i2c_master_send(&dev->i2c_client, &regs[i][0], 3);



	return 0;

}



/* HINT method: webcam I2C chips

 *

 * This method work for webcams with Micron sensors
@@ -1740,6 +1767,19 @@ static int em28xx_hint_sensor(struct em28xx *dev) 
		dev->vinmode = 0x0d;

		dev->vinctl = 0x00;



		break;

	case 0x8431:

		dev->model = EM2750_BOARD_UNKNOWN;

		sensor_name = "mt9m001";

		dev->em28xx_sensor = EM28XX_MT9M001;

		em28xx_initialize_mt9m001(dev);

		dev->sensor_xres = 1280;

		dev->sensor_yres = 1024;



		/* probably means BGGR 16 bit bayer */

		dev->vinmode = 0x0c;

		dev->vinctl = 0x00;



		break;

	default:

		printk("Unknown Micron Sensor 0x%04x\n", be16_to_cpu(version));
@@ -2275,6 +2315,7 @@ void em28xx_card_setup(struct em28xx *dev) 
		v4l2_subdev_call(sd, core, s_config, 0, &dev->sensor_xtal);

	}





	if (dev->board.adecoder == EM28XX_TVAUDIO)

		v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_adap,

			"tvaudio", "tvaudio", dev->board.tvaudio_addr);

drivers/media/video/em28xx/em28xx.h

+1 −0
Original line number Diff line number Diff line
@@ -366,6 +366,7 @@ enum em28xx_decoder { 
enum em28xx_sensor {

	EM28XX_NOSENSOR = 0,

	EM28XX_MT9V011,

	EM28XX_MT9M001,

};



enum em28xx_adecoder {