aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/tuners/si2157.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/tuners/si2157.c')
-rw-r--r--drivers/media/tuners/si2157.c86
1 files changed, 52 insertions, 34 deletions
diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
index 6c53edb..cf97142 100644
--- a/drivers/media/tuners/si2157.c
+++ b/drivers/media/tuners/si2157.c
@@ -1,5 +1,5 @@
/*
- * Silicon Labs Si2157/2158 silicon tuner driver
+ * Silicon Labs Si2147/2157/2158 silicon tuner driver
*
* Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
*
@@ -55,8 +55,7 @@ static int si2157_cmd_execute(struct si2157 *s, struct si2157_cmd *cmd)
break;
}
- dev_dbg(&s->client->dev, "%s: cmd execution took %d ms\n",
- __func__,
+ dev_dbg(&s->client->dev, "cmd execution took %d ms\n",
jiffies_to_msecs(jiffies) -
(jiffies_to_msecs(timeout) - TIMEOUT));
@@ -75,7 +74,7 @@ err_mutex_unlock:
return 0;
err:
- dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&s->client->dev, "failed=%d\n", ret);
return ret;
}
@@ -88,9 +87,12 @@ static int si2157_init(struct dvb_frontend *fe)
u8 *fw_file;
unsigned int chip_id;
- dev_dbg(&s->client->dev, "%s:\n", __func__);
+ dev_dbg(&s->client->dev, "\n");
- /* configure? */
+ if (s->fw_loaded)
+ goto warm;
+
+ /* power up */
memcpy(cmd.args, "\xc0\x00\x0c\x00\x00\x01\x01\x01\x01\x01\x01\x02\x00\x00\x01", 15);
cmd.wlen = 15;
cmd.rlen = 1;
@@ -111,45 +113,47 @@ static int si2157_init(struct dvb_frontend *fe)
#define SI2158_A20 ('A' << 24 | 58 << 16 | '2' << 8 | '0' << 0)
#define SI2157_A30 ('A' << 24 | 57 << 16 | '3' << 8 | '0' << 0)
+ #define SI2147_A30 ('A' << 24 | 47 << 16 | '3' << 8 | '0' << 0)
switch (chip_id) {
case SI2158_A20:
fw_file = SI2158_A20_FIRMWARE;
break;
case SI2157_A30:
+ case SI2147_A30:
goto skip_fw_download;
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],
+ "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;
}
/* cold state - try to download firmware */
- dev_info(&s->client->dev, "%s: found a '%s' in cold state\n",
- KBUILD_MODNAME, si2157_ops.info.name);
+ dev_info(&s->client->dev, "found a '%s' in cold state\n",
+ si2157_ops.info.name);
/* 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: firmware file '%s' not found\n",
- KBUILD_MODNAME, fw_file);
+ dev_err(&s->client->dev, "firmware file '%s' not found\n",
+ fw_file);
goto err;
}
/* firmware should be n chunks of 17 bytes */
if (fw->size % 17 != 0) {
- dev_err(&s->client->dev, "%s: firmware file '%s' is invalid\n",
- KBUILD_MODNAME, fw_file);
+ dev_err(&s->client->dev, "firmware file '%s' is invalid\n",
+ fw_file);
ret = -EINVAL;
goto err;
}
- dev_info(&s->client->dev, "%s: downloading firmware from file '%s'\n",
- KBUILD_MODNAME, fw_file);
+ dev_info(&s->client->dev, "downloading firmware from file '%s'\n",
+ fw_file);
for (remaining = fw->size; remaining > 0; remaining -= 17) {
len = fw->data[fw->size - remaining];
@@ -159,8 +163,8 @@ static int si2157_init(struct dvb_frontend *fe)
ret = si2157_cmd_execute(s, &cmd);
if (ret) {
dev_err(&s->client->dev,
- "%s: firmware download failed=%d\n",
- KBUILD_MODNAME, ret);
+ "firmware download failed=%d\n",
+ ret);
goto err;
}
}
@@ -177,14 +181,17 @@ skip_fw_download:
if (ret)
goto err;
- s->active = true;
+ s->fw_loaded = true;
+warm:
+ s->active = true;
return 0;
+
err:
if (fw)
release_firmware(fw);
- dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&s->client->dev, "failed=%d\n", ret);
return ret;
}
@@ -194,20 +201,21 @@ static int si2157_sleep(struct dvb_frontend *fe)
int ret;
struct si2157_cmd cmd;
- dev_dbg(&s->client->dev, "%s:\n", __func__);
+ dev_dbg(&s->client->dev, "\n");
s->active = false;
- memcpy(cmd.args, "\x13", 1);
- cmd.wlen = 1;
- cmd.rlen = 0;
+ /* standby */
+ memcpy(cmd.args, "\x16\x00", 2);
+ cmd.wlen = 2;
+ cmd.rlen = 1;
ret = si2157_cmd_execute(s, &cmd);
if (ret)
goto err;
return 0;
err:
- dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&s->client->dev, "failed=%d\n", ret);
return ret;
}
@@ -220,8 +228,8 @@ static int si2157_set_params(struct dvb_frontend *fe)
u8 bandwidth, delivery_system;
dev_dbg(&s->client->dev,
- "%s: delivery_system=%d frequency=%u bandwidth_hz=%u\n",
- __func__, c->delivery_system, c->frequency,
+ "delivery_system=%d frequency=%u bandwidth_hz=%u\n",
+ c->delivery_system, c->frequency,
c->bandwidth_hz);
if (!s->active) {
@@ -239,6 +247,9 @@ static int si2157_set_params(struct dvb_frontend *fe)
bandwidth = 0x0f;
switch (c->delivery_system) {
+ case SYS_ATSC:
+ delivery_system = 0x00;
+ break;
case SYS_DVBT:
case SYS_DVBT2: /* it seems DVB-T and DVB-T2 both are 0x20 here */
delivery_system = 0x20;
@@ -256,7 +267,14 @@ static int si2157_set_params(struct dvb_frontend *fe)
if (s->inversion)
cmd.args[5] = 0x01;
cmd.wlen = 6;
- cmd.rlen = 1;
+ cmd.rlen = 4;
+ ret = si2157_cmd_execute(s, &cmd);
+ if (ret)
+ goto err;
+
+ memcpy(cmd.args, "\x14\x00\x02\x07\x01\x00", 6);
+ cmd.wlen = 6;
+ cmd.rlen = 4;
ret = si2157_cmd_execute(s, &cmd);
if (ret)
goto err;
@@ -275,7 +293,7 @@ static int si2157_set_params(struct dvb_frontend *fe)
return 0;
err:
- dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&s->client->dev, "failed=%d\n", ret);
return ret;
}
@@ -310,13 +328,14 @@ static int si2157_probe(struct i2c_client *client,
s = kzalloc(sizeof(struct si2157), GFP_KERNEL);
if (!s) {
ret = -ENOMEM;
- dev_err(&client->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
+ dev_err(&client->dev, "kzalloc() failed\n");
goto err;
}
s->client = client;
s->fe = cfg->fe;
s->inversion = cfg->inversion;
+ s->fw_loaded = false;
mutex_init(&s->i2c_mutex);
/* check if the tuner is there */
@@ -333,11 +352,10 @@ static int si2157_probe(struct i2c_client *client,
i2c_set_clientdata(client, s);
dev_info(&s->client->dev,
- "%s: Silicon Labs Si2157/Si2158 successfully attached\n",
- KBUILD_MODNAME);
+ "Silicon Labs Si2157/Si2158 successfully attached\n");
return 0;
err:
- dev_dbg(&client->dev, "%s: failed=%d\n", __func__, ret);
+ dev_dbg(&client->dev, "failed=%d\n", ret);
kfree(s);
return ret;
@@ -348,7 +366,7 @@ static int si2157_remove(struct i2c_client *client)
struct si2157 *s = i2c_get_clientdata(client);
struct dvb_frontend *fe = s->fe;
- dev_dbg(&client->dev, "%s:\n", __func__);
+ dev_dbg(&client->dev, "\n");
memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
fe->tuner_priv = NULL;

Privacy Policy