From: Olli Salonen <olli.salo...@iki.fi>
Add handling for different chip revisions and firmwares.
Signed-off-by: Olli Salonen <olli.salo...@iki.fi>
Reviewed-by: Antti Palosaari <cr...@iki.fi>
Signed-off-by: Antti Palosaari <cr...@iki.fi>
---
drivers/media/dvb-frontends/si2168.c | 34 ++++++++++++++++++++++++++-----
drivers/media/dvb-frontends/si2168_priv.h | 4 +++-
2 files changed, 32 insertions(+), 6 deletions(-)
diff --git a/drivers/media/dvb-frontends/si2168.c
b/drivers/media/dvb-frontends/si2168.c
index bae7771..268fce3 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;
@@ -360,6 +361,20 @@ 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);
@@ -367,9 +382,18 @@ 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",
@@ -629,4 +653,4 @@ module_i2c_driver(si2168_driver);
MODULE_AUTHOR("Antti Palosaari <cr...@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 97f9d87..bebb68a 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-si2168-02.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-si2168-02.fw"
/* state struct */
struct si2168 {
--
1.9.3
--
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