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authorOlli Salonen <olli.salonen@iki.fi>2014-07-13 13:52:18 (GMT)
committerMauro Carvalho Chehab <m.chehab@samsung.com>2014-07-15 00:07:05 (GMT)
commitc9cb0820d5d756f2fac550213e664cc0be511349 (patch)
tree7d118af85c060726ec755bd2ca1b6d35e93a48ec /drivers
parentb02db9e1e01253e375e8b760c22858027a2130de (diff)
[media] si2168: Add support for chip revision Si2168 A30
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/dvb-frontends/si2168.c34
-rw-r--r--drivers/media/dvb-frontends/si2168_priv.h4
2 files changed, 32 insertions, 6 deletions
diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
index 5481c39..c10f4a1 100644
--- a/drivers/media/dvb-frontends/si2168.c
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -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);
diff --git a/drivers/media/dvb-frontends/si2168_priv.h b/drivers/media/dvb-frontends/si2168_priv.h
index e7d963d..d606915 100644
--- a/drivers/media/dvb-frontends/si2168_priv.h
+++ b/drivers/media/dvb-frontends/si2168_priv.h
@@ -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 {

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