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[media] i2c: saa7115: Support CJC7113 detection

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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>
This commit is contained in:
Kevin Fitch 2016-03-23 01:23:32 -03:00 committed by Mauro Carvalho Chehab
parent 95dd7b7e30
commit 7e31223ff0
1 changed files with 15 additions and 0 deletions
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15
drivers/media/i2c/saa7115.c
View file

@ -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);