Commit 7e31223f authored Mar 23, 2016 by Kevin Fitch Committed by Mauro Carvalho Chehab May 06, 2016

[media] i2c: saa7115: Support CJC7113 detection



It's been reported that CJC7113 devices are returning
all 1s when reading register 0:

  "1111111111111111" found @ 0x4a (stk1160)

This new device is apparently compatible with SA7113, so let's
add a quirk to allow its autodetection. Given there isn't
any known differences with SAA7113, this commit does not
introduces a new saa711x_model value.

Reported-by: Philippe Desrochers <desrochers.philippe@gmail.com>
Signed-off-by: Kevin Fitch <kfitch42@gmail.com>
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

parent 95dd7b7e

drivers/media/i2c/saa7115.c

+15 −0

Original line number	Diff line number	Diff line
		@@ -1798,6 +1798,21 @@ static int saa711x_detect_chip(struct i2c_client *client,
		return GM7113C;
		}

		/* Check if it is a CJC7113 */
		if (!memcmp(name, "1111111111111111", CHIP_VER_SIZE)) {
		strlcpy(name, "cjc7113", CHIP_VER_SIZE);

		if (!autodetect && strcmp(name, id->name))
		return -EINVAL;

		v4l_dbg(1, debug, client,
		"It seems to be a %s chip (%*ph) @ 0x%x.\n",
		name, 16, chip_ver, client->addr << 1);

		/* CJC7113 seems to be SAA7113-compatible */
		return SAA7113;
		}

		/* Chip was not discovered. Return its ID and don't bind */
		v4l_dbg(1, debug, client, "chip %*ph @ 0x%x is unknown.\n",
		16, chip_ver, client->addr << 1);

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