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[media] si2157: carry pointer to client instead of state in tuner_priv

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Carry struct i2c_client pointer in tuner_priv. This driver is I2C driver,
which is represented as a struct i2c_client, so better to carry this top
level structure for each routine in order to unify things.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Antti Palosaari 2014-12-06 14:40:06 -03:00 committed by Mauro Carvalho Chehab
parent 7cbf5d7651
commit 8fe51725d8
2 changed files with 38 additions and 41 deletions
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78
drivers/media/tuners/si2157.c
View File

@ -19,8 +19,9 @@
static const struct dvb_tuner_ops si2157_ops;
/* execute firmware command */
static int si2157_cmd_execute(struct si2157_dev *dev, struct si2157_cmd *cmd)
static int si2157_cmd_execute(struct i2c_client *client, struct si2157_cmd *cmd)
{
struct si2157_dev *dev = i2c_get_clientdata(client);
int ret;
unsigned long timeout;
@ -28,7 +29,7 @@ static int si2157_cmd_execute(struct si2157_dev *dev, struct si2157_cmd *cmd)
if (cmd->wlen) {
/* write cmd and args for firmware */
ret = i2c_master_send(dev->client, cmd->args, cmd->wlen);
ret = i2c_master_send(client, cmd->args, cmd->wlen);
if (ret < 0) {
goto err_mutex_unlock;
} else if (ret != cmd->wlen) {
@ -42,7 +43,7 @@ static int si2157_cmd_execute(struct si2157_dev *dev, struct si2157_cmd *cmd)
#define TIMEOUT 80
timeout = jiffies + msecs_to_jiffies(TIMEOUT);
while (!time_after(jiffies, timeout)) {
ret = i2c_master_recv(dev->client, cmd->args, cmd->rlen);
ret = i2c_master_recv(client, cmd->args, cmd->rlen);
if (ret < 0) {
goto err_mutex_unlock;
} else if (ret != cmd->rlen) {
@ -55,7 +56,7 @@ static int si2157_cmd_execute(struct si2157_dev *dev, struct si2157_cmd *cmd)
break;
}
dev_dbg(&dev->client->dev, "cmd execution took %d ms\n",
dev_dbg(&client->dev, "cmd execution took %d ms\n",
jiffies_to_msecs(jiffies) -
(jiffies_to_msecs(timeout) - TIMEOUT));
@ -70,20 +71,21 @@ static int si2157_cmd_execute(struct si2157_dev *dev, struct si2157_cmd *cmd)
err_mutex_unlock:
mutex_unlock(&dev->i2c_mutex);
dev_dbg(&dev->client->dev, "failed=%d\n", ret);
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int si2157_init(struct dvb_frontend *fe)
{
struct si2157_dev *dev = fe->tuner_priv;
struct i2c_client *client = fe->tuner_priv;
struct si2157_dev *dev = i2c_get_clientdata(client);
int ret, len, remaining;
struct si2157_cmd cmd;
const struct firmware *fw = NULL;
u8 *fw_file;
unsigned int chip_id;
dev_dbg(&dev->client->dev, "\n");
dev_dbg(&client->dev, "\n");
if (dev->fw_loaded)
goto warm;
@ -97,7 +99,7 @@ static int si2157_init(struct dvb_frontend *fe)
cmd.wlen = 15;
}
cmd.rlen = 1;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret)
goto err;
@ -105,7 +107,7 @@ static int si2157_init(struct dvb_frontend *fe)
memcpy(cmd.args, "\x02", 1);
cmd.wlen = 1;
cmd.rlen = 13;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret)
goto err;
@ -128,8 +130,7 @@ static int si2157_init(struct dvb_frontend *fe)
case SI2146_A10:
goto skip_fw_download;
default:
dev_err(&dev->client->dev,
"unknown chip version Si21%d-%c%c%c\n",
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;
@ -137,26 +138,26 @@ static int si2157_init(struct dvb_frontend *fe)
}
/* cold state - try to download firmware */
dev_info(&dev->client->dev, "found a '%s' in cold state\n",
dev_info(&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, &dev->client->dev);
ret = request_firmware(&fw, fw_file, &client->dev);
if (ret) {
dev_err(&dev->client->dev, "firmware file '%s' not found\n",
dev_err(&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(&dev->client->dev, "firmware file '%s' is invalid\n",
dev_err(&client->dev, "firmware file '%s' is invalid\n",
fw_file);
ret = -EINVAL;
goto fw_release_exit;
}
dev_info(&dev->client->dev, "downloading firmware from file '%s'\n",
dev_info(&client->dev, "downloading firmware from file '%s'\n",
fw_file);
for (remaining = fw->size; remaining > 0; remaining -= 17) {
@ -164,10 +165,9 @@ static int si2157_init(struct dvb_frontend *fe)
memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
cmd.wlen = len;
cmd.rlen = 1;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret) {
dev_err(&dev->client->dev,
"firmware download failed=%d\n",
dev_err(&client->dev, "firmware download failed %d\n",
ret);
goto fw_release_exit;
}
@ -181,7 +181,7 @@ skip_fw_download:
memcpy(cmd.args, "\x01\x01", 2);
cmd.wlen = 2;
cmd.rlen = 1;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret)
goto err;
@ -194,17 +194,18 @@ warm:
fw_release_exit:
release_firmware(fw);
err:
dev_dbg(&dev->client->dev, "failed=%d\n", ret);
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int si2157_sleep(struct dvb_frontend *fe)
{
struct si2157_dev *dev = fe->tuner_priv;
struct i2c_client *client = fe->tuner_priv;
struct si2157_dev *dev = i2c_get_clientdata(client);
int ret;
struct si2157_cmd cmd;
dev_dbg(&dev->client->dev, "\n");
dev_dbg(&client->dev, "\n");
dev->active = false;
@ -212,28 +213,28 @@ static int si2157_sleep(struct dvb_frontend *fe)
memcpy(cmd.args, "\x16\x00", 2);
cmd.wlen = 2;
cmd.rlen = 1;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret)
goto err;
return 0;
err:
dev_dbg(&dev->client->dev, "failed=%d\n", ret);
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int si2157_set_params(struct dvb_frontend *fe)
{
struct si2157_dev *dev = fe->tuner_priv;
struct i2c_client *client = fe->tuner_priv;
struct si2157_dev *dev = i2c_get_clientdata(client);
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret;
struct si2157_cmd cmd;
u8 bandwidth, delivery_system;
dev_dbg(&dev->client->dev,
dev_dbg(&client->dev,
"delivery_system=%d frequency=%u bandwidth_hz=%u\n",
c->delivery_system, c->frequency,
c->bandwidth_hz);
c->delivery_system, c->frequency, c->bandwidth_hz);
if (!dev->active) {
ret = -EAGAIN;
@ -274,7 +275,7 @@ static int si2157_set_params(struct dvb_frontend *fe)
cmd.args[5] = 0x01;
cmd.wlen = 6;
cmd.rlen = 4;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret)
goto err;
@ -284,7 +285,7 @@ static int si2157_set_params(struct dvb_frontend *fe)
memcpy(cmd.args, "\x14\x00\x02\x07\x01\x00", 6);
cmd.wlen = 6;
cmd.rlen = 4;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret)
goto err;
@ -296,13 +297,13 @@ static int si2157_set_params(struct dvb_frontend *fe)
cmd.args[7] = (c->frequency >> 24) & 0xff;
cmd.wlen = 8;
cmd.rlen = 1;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret)
goto err;
return 0;
err:
dev_dbg(&dev->client->dev, "failed=%d\n", ret);
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
@ -341,7 +342,7 @@ static int si2157_probe(struct i2c_client *client,
goto err;
}
dev->client = client;
i2c_set_clientdata(client, dev);
dev->fe = cfg->fe;
dev->inversion = cfg->inversion;
dev->fw_loaded = false;
@ -351,17 +352,14 @@ static int si2157_probe(struct i2c_client *client,
/* check if the tuner is there */
cmd.wlen = 0;
cmd.rlen = 1;
ret = si2157_cmd_execute(dev, &cmd);
ret = si2157_cmd_execute(client, &cmd);
if (ret)
goto err;
fe->tuner_priv = dev;
memcpy(&fe->ops.tuner_ops, &si2157_ops, sizeof(struct dvb_tuner_ops));
fe->tuner_priv = client;
i2c_set_clientdata(client, dev);
dev_info(&dev->client->dev,
"Silicon Labs %s successfully attached\n",
dev_info(&client->dev, "Silicon Labs %s successfully attached\n",
dev->chiptype == SI2157_CHIPTYPE_SI2146 ?
"Si2146" : "Si2147/2148/2157/2158");

1
drivers/media/tuners/si2157_priv.h
View File

@ -23,7 +23,6 @@
/* state struct */
struct si2157_dev {
struct mutex i2c_mutex;
struct i2c_client *client;
struct dvb_frontend *fe;
bool active;
bool fw_loaded;