Si2168-B40 firmware API has changed somewhere between 4.0-11 and
4.0-19 so that sleep will lose firmware upgrade from the chip. Due
to that firmware re-upload is needed when newer firmwares are used.
Rewrote firmware handling logic partly at the same.
Signed-off-by: Antti Palosaari <crope@xxxxxx>
Cc: Olli Salonen <olli.salonen@xxxxxx>
---
drivers/media/dvb-frontends/si2168.c | 124 ++++++++++++++++++------------
drivers/media/dvb-frontends/si2168_priv.h | 8 +-
2 files changed, 80 insertions(+), 52 deletions(-)
diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
index 108a069..124addc 100644
--- a/drivers/media/dvb-frontends/si2168.c
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -357,9 +357,7 @@ static int si2168_init(struct dvb_frontend *fe)
struct si2168_dev *dev = i2c_get_clientdata(client);
int ret, len, remaining;
const struct firmware *fw;
- const char *fw_name;
struct si2168_cmd cmd;
- unsigned int chip_id;
dev_dbg(&client->dev, "\n");
@@ -371,7 +369,7 @@ static int si2168_init(struct dvb_frontend *fe)
if (ret)
goto err;
- if (dev->fw_loaded) {
+ if (dev->warm) {
/* resume */
memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
cmd.wlen = 8;
@@ -398,49 +396,14 @@ 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;
- ret = si2168_cmd_execute(client, &cmd);
- if (ret)
- goto err;
-
- chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 | cmd.args[3] << 8 |
- cmd.args[4] << 0;
-
- #define SI2168_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0)
- #define SI2168_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0)
- #define SI2168_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
-
- switch (chip_id) {
- case SI2168_A20:
- fw_name = SI2168_A20_FIRMWARE;
- break;
- case SI2168_A30:
- fw_name = SI2168_A30_FIRMWARE;
- break;
- case SI2168_B40:
- fw_name = SI2168_B40_FIRMWARE;
- break;
- default:
- dev_err(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
- cmd.args[2], cmd.args[1],
- cmd.args[3], cmd.args[4]);
- ret = -EINVAL;
- goto err;
- }
-
- dev_info(&client->dev, "found a 'Silicon Labs Si21%d-%c%c%c'\n",
- cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
-
/* request the firmware, this will block and timeout */
- ret = request_firmware(&fw, fw_name, &client->dev);
+ ret = request_firmware(&fw, dev->firmware_name, &client->dev);
if (ret) {
/* fallback mechanism to handle old name for Si2168 B40 fw */
- if (chip_id == SI2168_B40) {
- fw_name = SI2168_B40_FIRMWARE_FALLBACK;
- ret = request_firmware(&fw, fw_name, &client->dev);
+ if (dev->chip_id == SI2168_CHIP_ID_B40) {
+ dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK;
+ ret = request_firmware(&fw, dev->firmware_name,
+ &client->dev);
}
if (ret == 0) {
@@ -450,13 +413,13 @@ static int si2168_init(struct dvb_frontend *fe)
} else {
dev_err(&client->dev,
"firmware file '%s' not found\n",
- fw_name);
+ dev->firmware_name);
goto err_release_firmware;
}
}
dev_info(&client->dev, "downloading firmware from file '%s'\n",
- fw_name);
+ dev->firmware_name);
if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
/* firmware is in the new format */
@@ -511,8 +474,11 @@ static int si2168_init(struct dvb_frontend *fe)
if (ret)
goto err;
- dev_info(&client->dev, "firmware version: %c.%c.%d\n",
- cmd.args[6], cmd.args[7], cmd.args[8]);
+ dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 |
+ (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0;
+ dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
+ dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
+ dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
/* set ts mode */
memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
@@ -525,7 +491,7 @@ static int si2168_init(struct dvb_frontend *fe)
if (ret)
goto err;
- dev->fw_loaded = true;
+ dev->warm = true;
warm:
dev->active = true;
@@ -549,6 +515,10 @@ static int si2168_sleep(struct dvb_frontend *fe)
dev->active = false;
+ /* Firmware B 4.0-11 or later loses warm state during sleep */
+ if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0))
+ dev->warm = false;
+
memcpy(cmd.args, "\x13", 1);
cmd.wlen = 1;
cmd.rlen = 0;
@@ -653,6 +623,7 @@ static int si2168_probe(struct i2c_client *client,
struct si2168_config *config = client->dev.platform_data;
struct si2168_dev *dev;
int ret;
+ struct si2168_cmd cmd;
dev_dbg(&client->dev, "\n");
@@ -663,8 +634,56 @@ static int si2168_probe(struct i2c_client *client,
goto err;
}
+ i2c_set_clientdata(client, dev);
mutex_init(&dev->i2c_mutex);
+ /* Initialize */
+ memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
+ cmd.wlen = 13;
+ cmd.rlen = 0;
+ ret = si2168_cmd_execute(client, &cmd);
+ if (ret)
+ goto err_kfree;
+
+ /* Power up */
+ memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
+ cmd.wlen = 8;
+ cmd.rlen = 1;
+ ret = si2168_cmd_execute(client, &cmd);
+ if (ret)
+ goto err_kfree;
+
+ /* Query chip revision */
+ memcpy(cmd.args, "\x02", 1);
+ cmd.wlen = 1;
+ cmd.rlen = 13;
+ ret = si2168_cmd_execute(client, &cmd);
+ if (ret)
+ goto err_kfree;
+
+ dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 |
+ cmd.args[3] << 8 | cmd.args[4] << 0;
+
+ switch (dev->chip_id) {
+ case SI2168_CHIP_ID_A20:
+ dev->firmware_name = SI2168_A20_FIRMWARE;
+ break;
+ case SI2168_CHIP_ID_A30:
+ dev->firmware_name = SI2168_A30_FIRMWARE;
+ break;
+ case SI2168_CHIP_ID_B40:
+ dev->firmware_name = SI2168_B40_FIRMWARE;
+ break;
+ default:
+ dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
+ cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
+ ret = -ENODEV;
+ goto err_kfree;
+ }
+
+ dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 |
+ (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0;
+
/* create mux i2c adapter for tuner */
dev->muxc = i2c_mux_alloc(client->adapter, &client->dev,
1, 0, I2C_MUX_LOCKED,
@@ -686,11 +705,14 @@ static int si2168_probe(struct i2c_client *client,
dev->ts_mode = config->ts_mode;
dev->ts_clock_inv = config->ts_clock_inv;
dev->ts_clock_gapped = config->ts_clock_gapped;
- dev->fw_loaded = false;
- i2c_set_clientdata(client, dev);
+ dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n",
+ dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
+ dev->version >> 8 & 0xff);
+ dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
+ dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
+ dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
- dev_info(&client->dev, "Silicon Labs Si2168 successfully attached\n");
return 0;
err_kfree:
kfree(dev);
diff --git a/drivers/media/dvb-frontends/si2168_priv.h b/drivers/media/dvb-frontends/si2168_priv.h
index 8a1f36d..7843ccb 100644
--- a/drivers/media/dvb-frontends/si2168_priv.h
+++ b/drivers/media/dvb-frontends/si2168_priv.h
@@ -34,8 +34,14 @@ struct si2168_dev {
struct dvb_frontend fe;
enum fe_delivery_system delivery_system;
enum fe_status fe_status;
+ #define SI2168_CHIP_ID_A20 ('A' << 24 | 68 << 16 | '2' << 8 | '0' << 0)
+ #define SI2168_CHIP_ID_A30 ('A' << 24 | 68 << 16 | '3' << 8 | '0' << 0)
+ #define SI2168_CHIP_ID_B40 ('B' << 24 | 68 << 16 | '4' << 8 | '0' << 0)
+ unsigned int chip_id;
+ unsigned int version;
+ const char *firmware_name;
bool active;
- bool fw_loaded;
+ bool warm;
u8 ts_mode;
bool ts_clock_inv;
bool ts_clock_gapped;
--
http://palosaari.fi/
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