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path: root/drivers/media/dvb-frontends/si2168.c
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Diffstat (limited to 'drivers/media/dvb-frontends/si2168.c')
-rw-r--r--drivers/media/dvb-frontends/si2168.c266
1 files changed, 104 insertions, 162 deletions
diff --git a/drivers/media/dvb-frontends/si2168.c b/drivers/media/dvb-frontends/si2168.c
index 2e3cdcfa0a6..8f81d979de3 100644
--- a/drivers/media/dvb-frontends/si2168.c
+++ b/drivers/media/dvb-frontends/si2168.c
@@ -95,20 +95,17 @@ static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status)
switch (c->delivery_system) {
case SYS_DVBT:
- cmd.args[0] = 0xa0;
- cmd.args[1] = 0x01;
+ memcpy(cmd.args, "\xa0\x01", 2);
cmd.wlen = 2;
cmd.rlen = 13;
break;
case SYS_DVBC_ANNEX_A:
- cmd.args[0] = 0x90;
- cmd.args[1] = 0x01;
+ memcpy(cmd.args, "\x90\x01", 2);
cmd.wlen = 2;
cmd.rlen = 9;
break;
case SYS_DVBT2:
- cmd.args[0] = 0x50;
- cmd.args[1] = 0x01;
+ memcpy(cmd.args, "\x50\x01", 2);
cmd.wlen = 2;
cmd.rlen = 14;
break;
@@ -144,6 +141,15 @@ static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status)
s->fe_status = *status;
+ if (*status & FE_HAS_LOCK) {
+ c->cnr.len = 1;
+ c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
+ c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
+ } else {
+ c->cnr.len = 1;
+ c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
+ }
+
dev_dbg(&s->client->dev, "%s: status=%02x args=%*ph\n",
__func__, *status, cmd.rlen, cmd.args);
@@ -243,51 +249,23 @@ static int si2168_set_frontend(struct dvb_frontend *fe)
if (ret)
goto err;
- memcpy(cmd.args, "\x14\x00\x01\x04\x00\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x03\x10\x17\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x02\x10\x15\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x0b\x10\x88\x13", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
@@ -295,124 +273,66 @@ static int si2168_set_frontend(struct dvb_frontend *fe)
memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
cmd.args[4] = delivery_system | bandwidth;
cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x04\x10\x15\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
- memcpy(cmd.args, "\x14\x00\x05\x10\xa1\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
+ /* set DVB-C symbol rate */
+ if (c->delivery_system == SYS_DVBC_ANNEX_A) {
+ memcpy(cmd.args, "\x14\x00\x02\x11", 4);
+ cmd.args[4] = (c->symbol_rate / 1000) & 0xff;
+ cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
+ cmd.wlen = 6;
+ cmd.rlen = 4;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+ }
memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
- memcpy(cmd.args, "\x14\x00\x0d\x10\xd0\x02", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x01\x10\x00\x00", 6);
+ memcpy(cmd.args, "\x14\x00\x01\x10\x16\x00", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x18", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x15", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x04\x03\x00\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x03\x03\x00\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x08\x03\x00\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x07\x03\x01\x02", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x06\x03\x00\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x05\x03\x00\x00", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x40", 6);
- cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
- memcpy(cmd.args, "\x14\x00\x01\x10\x16\x00", 6);
+ memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
- memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
+ memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
- cmd.args[0] = 0x85;
+ memcpy(cmd.args, "\x85", 1);
cmd.wlen = 1;
cmd.rlen = 1;
ret = si2168_cmd_execute(s, &cmd);
@@ -432,59 +352,61 @@ 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;
+ unsigned int chip_id;
dev_dbg(&s->client->dev, "%s:\n", __func__);
- cmd.args[0] = 0x13;
- cmd.wlen = 1;
- cmd.rlen = 0;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
- cmd.args[0] = 0xc0;
- cmd.args[1] = 0x12;
- cmd.args[2] = 0x00;
- cmd.args[3] = 0x0c;
- cmd.args[4] = 0x00;
- cmd.args[5] = 0x0d;
- cmd.args[6] = 0x16;
- cmd.args[7] = 0x00;
- cmd.args[8] = 0x00;
- cmd.args[9] = 0x00;
- cmd.args[10] = 0x00;
- cmd.args[11] = 0x00;
- cmd.args[12] = 0x00;
+ 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(s, &cmd);
if (ret)
goto err;
- cmd.args[0] = 0xc0;
- cmd.args[1] = 0x06;
- cmd.args[2] = 0x01;
- cmd.args[3] = 0x0f;
- cmd.args[4] = 0x00;
- cmd.args[5] = 0x20;
- cmd.args[6] = 0x20;
- cmd.args[7] = 0x01;
+ memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
cmd.wlen = 8;
cmd.rlen = 1;
ret = si2168_cmd_execute(s, &cmd);
if (ret)
goto err;
- cmd.args[0] = 0x02;
+ /* query chip revision */
+ memcpy(cmd.args, "\x02", 1);
cmd.wlen = 1;
cmd.rlen = 13;
ret = si2168_cmd_execute(s, &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_file = SI2168_A20_FIRMWARE;
+ break;
+ case SI2168_A30:
+ fw_file = SI2168_A30_FIRMWARE;
+ break;
+ case SI2168_B40:
+ fw_file = SI2168_B40_FIRMWARE;
+ break;
+ default:
+ dev_err(&s->client->dev,
+ "%s: unkown chip version Si21%d-%c%c%c\n",
+ KBUILD_MODNAME, cmd.args[2], cmd.args[1],
+ 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);
@@ -492,9 +414,22 @@ 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 fw */
+ if (chip_id == SI2168_B40) {
+ fw_file = SI2168_B40_FIRMWARE_FALLBACK;
+ ret = request_firmware(&fw, fw_file, &s->client->dev);
+ }
+
+ if (ret == 0) {
+ dev_notice(&s->client->dev,
+ "%s: please install firmware file '%s'\n",
+ KBUILD_MODNAME, SI2168_B40_FIRMWARE);
+ } else {
+ 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",
@@ -520,8 +455,7 @@ static int si2168_init(struct dvb_frontend *fe)
release_firmware(fw);
fw = NULL;
- cmd.args[0] = 0x01;
- cmd.args[1] = 0x01;
+ memcpy(cmd.args, "\x01\x01", 2);
cmd.wlen = 2;
cmd.rlen = 1;
ret = si2168_cmd_execute(s, &cmd);
@@ -545,12 +479,24 @@ err:
static int si2168_sleep(struct dvb_frontend *fe)
{
struct si2168 *s = fe->demodulator_priv;
+ int ret;
+ struct si2168_cmd cmd;
dev_dbg(&s->client->dev, "%s:\n", __func__);
s->active = false;
+ memcpy(cmd.args, "\x13", 1);
+ cmd.wlen = 1;
+ cmd.rlen = 0;
+ ret = si2168_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
return 0;
+err:
+ dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ return ret;
}
static int si2168_get_tune_settings(struct dvb_frontend *fe,
@@ -660,7 +606,6 @@ static int si2168_probe(struct i2c_client *client,
struct si2168_config *config = client->dev.platform_data;
struct si2168 *s;
int ret;
- struct si2168_cmd cmd;
dev_dbg(&client->dev, "%s:\n", __func__);
@@ -674,18 +619,13 @@ static int si2168_probe(struct i2c_client *client,
s->client = client;
mutex_init(&s->i2c_mutex);
- /* check if the demod is there */
- cmd.wlen = 0;
- cmd.rlen = 1;
- ret = si2168_cmd_execute(s, &cmd);
- if (ret)
- goto err;
-
/* create mux i2c adapter for tuner */
s->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, s,
0, 0, 0, si2168_select, si2168_deselect);
- if (s->adapter == NULL)
+ if (s->adapter == NULL) {
+ ret = -ENODEV;
goto err;
+ }
/* create dvb_frontend */
memcpy(&s->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
@@ -743,4 +683,6 @@ 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_A20_FIRMWARE);
+MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
+MODULE_FIRMWARE(SI2168_B40_FIRMWARE);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-14 02:26:47 +0000