From 7e31223ff0196dc5c5e8124b3c05ab4a25847c59 Mon Sep 17 00:00:00 2001 From: Kevin Fitch Date: Wed, 23 Mar 2016 01:23:32 -0300 Subject: [PATCH] [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 Signed-off-by: Kevin Fitch Signed-off-by: Ezequiel Garcia Signed-off-by: Mauro Carvalho Chehab --- drivers/media/i2c/saa7115.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/media/i2c/saa7115.c b/drivers/media/i2c/saa7115.c index d2a1ce2bc7f5..bd3526bdd539 100644 --- a/drivers/media/i2c/saa7115.c +++ b/drivers/media/i2c/saa7115.c @@ -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);