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

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>

diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c
index f7c3867..88afb2a 100644 (file)
--- a/drivers/media/tuners/si2157.c
+++ b/drivers/media/tuners/si2157.c
@@ -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");
 

diff --git a/drivers/media/tuners/si2157_priv.h b/drivers/media/tuners/si2157_priv.h
index 8f6cfc0..7aa53bc 100644 (file)
--- a/drivers/media/tuners/si2157_priv.h
+++ b/drivers/media/tuners/si2157_priv.h
@@ -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;