[media] saa7115: add detection code for gm7113c
Adds a code that (auto)detects gm7113c clones. The auto-detection here is not perfect, as, on contrary to what it would be expected by looking into its datasheets some devices would return, instead: saa7115 0-0025: chip 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 @ 0x4a is unknown (found on a device labeled as GM7113C 1145 by Ezequiel Garcia) Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Tested-by: Jon Arne Jørgensen <jonarne@jonarne.no> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
parent
e090901e48
commit
b11460b053
|
@ -1640,6 +1640,36 @@ static int saa711x_detect_chip(struct i2c_client *client,
|
|||
}
|
||||
}
|
||||
|
||||
/* Check if it is a gm7113c */
|
||||
if (!memcmp(name, "0000", 4)) {
|
||||
chip_id = 0;
|
||||
for (i = 0; i < 4; i++) {
|
||||
chip_id = chip_id << 1;
|
||||
chip_id |= (chip_ver[i] & 0x80) ? 1 : 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Note: From the datasheet, only versions 1 and 2
|
||||
* exists. However, tests on a device labeled as:
|
||||
* "GM7113C 1145" returned "10" on all 16 chip
|
||||
* version (reg 0x00) reads. So, we need to also
|
||||
* accept at least verion 0. For now, let's just
|
||||
* assume that a device that returns "0000" for
|
||||
* the lower nibble is a gm7113c.
|
||||
*/
|
||||
|
||||
strlcpy(name, "gm7113c", 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);
|
||||
|
||||
return V4L2_IDENT_GM7113C;
|
||||
}
|
||||
|
||||
/* 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);
|
||||
|
@ -1669,6 +1699,11 @@ static int saa711x_probe(struct i2c_client *client,
|
|||
if (ident < 0)
|
||||
return ident;
|
||||
|
||||
if (ident == V4L2_IDENT_GM7113C) {
|
||||
v4l_warn(client, "%s not yet supported\n", name);
|
||||
return -ENODEV;
|
||||
}
|
||||
|
||||
strlcpy(client->name, name, sizeof(client->name));
|
||||
|
||||
state = devm_kzalloc(&client->dev, sizeof(*state), GFP_KERNEL);
|
||||
|
@ -1754,6 +1789,7 @@ static const struct i2c_device_id saa711x_id[] = {
|
|||
{ "saa7114", 0 },
|
||||
{ "saa7115", 0 },
|
||||
{ "saa7118", 0 },
|
||||
{ "gm7113c", 0 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, saa711x_id);
|
||||
|
|
|
@ -52,6 +52,8 @@ enum {
|
|||
V4L2_IDENT_SAA7115 = 105,
|
||||
V4L2_IDENT_SAA7118 = 108,
|
||||
|
||||
V4L2_IDENT_GM7113C = 140,
|
||||
|
||||
/* module saa7127: reserved range 150-199 */
|
||||
V4L2_IDENT_SAA7127 = 157,
|
||||
V4L2_IDENT_SAA7129 = 159,
|
||||
|
|
Loading…
Reference in a new issue