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[media] si2168: Add support for chip revision Si2168 A30

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Add handling for different chip revisions and firmwares.

Signed-off-by: Olli Salonen <olli.salonen@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Olli Salonen 2014-07-13 10:52:18 -03:00 committed by Mauro Carvalho Chehab
parent b02db9e1e0
commit c9cb0820d5
2 changed files with 32 additions and 6 deletions
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34
drivers/media/dvb-frontends/si2168.c
View File

@ -333,7 +333,7 @@ static int si2168_init(struct dvb_frontend *fe)
struct si2168 *s = fe->demodulator_priv;
int ret, len, remaining;
const struct firmware *fw = NULL;
u8 *fw_file = SI2168_FIRMWARE;
u8 *fw_file;
const unsigned int i2c_wr_max = 8;
struct si2168_cmd cmd;
@ -353,6 +353,7 @@ static int si2168_init(struct dvb_frontend *fe)
if (ret)
goto err;
/* query chip revision */
memcpy(cmd.args, "\x02", 1);
cmd.wlen = 1;
cmd.rlen = 13;
@ -374,6 +375,20 @@ static int si2168_init(struct dvb_frontend *fe)
if (ret)
goto err;
if (((cmd.args[1] & 0x0f) == 2) && (cmd.args[3] == '4') &&
(cmd.args[4] == '0'))
fw_file = SI2168_B40_FIRMWARE;
else if (((cmd.args[1] & 0x0f) == 1) && (cmd.args[3] == '3') &&
(cmd.args[4] == '0'))
fw_file = SI2168_A30_FIRMWARE;
else {
dev_err(&s->client->dev,
"%s: no firmware file for Si2168-%c%c defined\n",
KBUILD_MODNAME, cmd.args[3], cmd.args[4]);
ret = -EINVAL;
goto err;
}
/* cold state - try to download firmware */
dev_info(&s->client->dev, "%s: found a '%s' in cold state\n",
KBUILD_MODNAME, si2168_ops.info.name);
@ -381,9 +396,18 @@ static int si2168_init(struct dvb_frontend *fe)
/* request the firmware, this will block and timeout */
ret = request_firmware(&fw, fw_file, &s->client->dev);
if (ret) {
dev_err(&s->client->dev, "%s: firmare file '%s' not found\n",
KBUILD_MODNAME, fw_file);
goto err;
/* fallback mechanism to handle old name for
SI2168_B40_FIRMWARE */
if (((cmd.args[1] & 0x0f) == 2) && (cmd.args[3] == '4') &&
(cmd.args[4] == '0')) {
fw_file = SI2168_B40_FIRMWARE_FALLBACK;
ret = request_firmware(&fw, fw_file, &s->client->dev);
}
if (ret) {
dev_err(&s->client->dev, "%s: firmware file '%s' not found\n",
KBUILD_MODNAME, fw_file);
goto err;
}
}
dev_info(&s->client->dev, "%s: downloading firmware from file '%s'\n",
@ -643,4 +667,4 @@ module_i2c_driver(si2168_driver);
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(SI2168_FIRMWARE);
MODULE_FIRMWARE(SI2168_B40_FIRMWARE);

4
drivers/media/dvb-frontends/si2168_priv.h
View File

@ -22,7 +22,9 @@
#include <linux/firmware.h>
#include <linux/i2c-mux.h>
#define SI2168_FIRMWARE "dvb-demod-si2168-01.fw"
#define SI2168_A30_FIRMWARE "dvb-demod-si2168-a30-01.fw"
#define SI2168_B40_FIRMWARE "dvb-demod-si2168-b40-01.fw"
#define SI2168_B40_FIRMWARE_FALLBACK "dvb-demod-si2168-01.fw"
/* state struct */
struct si2168 {