[media] tda18212: convert driver to I2C binding

Convert driver from DVB proprietary model to common I2C model.

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/tuners/tda18212.c b/drivers/media/tuners/tda18212.c
index 15b09f8..659787b 100644 (file)
--- a/drivers/media/tuners/tda18212.c
+++ b/drivers/media/tuners/tda18212.c
@@ -24,8 +24,8 @@
 #define MAX_XFER_SIZE  64
 
 struct tda18212_priv {
-       struct tda18212_config *cfg;
-       struct i2c_adapter *i2c;
+       struct tda18212_config cfg;
+       struct i2c_client *client;
 
        u32 if_frequency;
 };
@@ -38,7 +38,7 @@ static int tda18212_wr_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
        u8 buf[MAX_XFER_SIZE];
        struct i2c_msg msg[1] = {
                {
-                       .addr = priv->cfg->i2c_address,
+                       .addr = priv->client->addr,
                        .flags = 0,
                        .len = 1 + len,
                        .buf = buf,
@@ -46,7 +46,7 @@ static int tda18212_wr_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
        };
 
        if (1 + len > sizeof(buf)) {
-               dev_warn(&priv->i2c->dev,
+               dev_warn(&priv->client->dev,
                         "%s: i2c wr reg=%04x: len=%d is too big!\n",
                         KBUILD_MODNAME, reg, len);
                return -EINVAL;
@@ -55,12 +55,12 @@ static int tda18212_wr_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
        buf[0] = reg;
        memcpy(&buf[1], val, len);
 
-       ret = i2c_transfer(priv->i2c, msg, 1);
+       ret = i2c_transfer(priv->client->adapter, msg, 1);
        if (ret == 1) {
                ret = 0;
        } else {
-               dev_warn(&priv->i2c->dev, "%s: i2c wr failed=%d reg=%02x " \
-                               "len=%d\n", KBUILD_MODNAME, ret, reg, len);
+               dev_warn(&priv->client->dev, "%s: i2c wr failed=%d reg=%02x len=%d\n",
+                               KBUILD_MODNAME, ret, reg, len);
                ret = -EREMOTEIO;
        }
        return ret;
@@ -74,12 +74,12 @@ static int tda18212_rd_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
        u8 buf[MAX_XFER_SIZE];
        struct i2c_msg msg[2] = {
                {
-                       .addr = priv->cfg->i2c_address,
+                       .addr = priv->client->addr,
                        .flags = 0,
                        .len = 1,
                        .buf = &reg,
                }, {
-                       .addr = priv->cfg->i2c_address,
+                       .addr = priv->client->addr,
                        .flags = I2C_M_RD,
                        .len = len,
                        .buf = buf,
@@ -87,19 +87,19 @@ static int tda18212_rd_regs(struct tda18212_priv *priv, u8 reg, u8 *val,
        };
 
        if (len > sizeof(buf)) {
-               dev_warn(&priv->i2c->dev,
+               dev_warn(&priv->client->dev,
                         "%s: i2c rd reg=%04x: len=%d is too big!\n",
                         KBUILD_MODNAME, reg, len);
                return -EINVAL;
        }
 
-       ret = i2c_transfer(priv->i2c, msg, 2);
+       ret = i2c_transfer(priv->client->adapter, msg, 2);
        if (ret == 2) {
                memcpy(val, buf, len);
                ret = 0;
        } else {
-               dev_warn(&priv->i2c->dev, "%s: i2c rd failed=%d reg=%02x " \
-                               "len=%d\n", KBUILD_MODNAME, ret, reg, len);
+               dev_warn(&priv->client->dev, "%s: i2c rd failed=%d reg=%02x len=%d\n",
+                               KBUILD_MODNAME, ret, reg, len);
                ret = -EREMOTEIO;
        }
 
@@ -166,7 +166,7 @@ static int tda18212_set_params(struct dvb_frontend *fe)
                [ATSC_QAM] = { 0x7d, 0x20, 0x63 },
        };
 
-       dev_dbg(&priv->i2c->dev,
+       dev_dbg(&priv->client->dev,
                        "%s: delivery_system=%d frequency=%d bandwidth_hz=%d\n",
                        __func__, c->delivery_system, c->frequency,
                        c->bandwidth_hz);
@@ -176,25 +176,25 @@ static int tda18212_set_params(struct dvb_frontend *fe)
 
        switch (c->delivery_system) {
        case SYS_ATSC:
-               if_khz = priv->cfg->if_atsc_vsb;
+               if_khz = priv->cfg.if_atsc_vsb;
                i = ATSC_VSB;
                break;
        case SYS_DVBC_ANNEX_B:
-               if_khz = priv->cfg->if_atsc_qam;
+               if_khz = priv->cfg.if_atsc_qam;
                i = ATSC_QAM;
                break;
        case SYS_DVBT:
                switch (c->bandwidth_hz) {
                case 6000000:
-                       if_khz = priv->cfg->if_dvbt_6;
+                       if_khz = priv->cfg.if_dvbt_6;
                        i = DVBT_6;
                        break;
                case 7000000:
-                       if_khz = priv->cfg->if_dvbt_7;
+                       if_khz = priv->cfg.if_dvbt_7;
                        i = DVBT_7;
                        break;
                case 8000000:
-                       if_khz = priv->cfg->if_dvbt_8;
+                       if_khz = priv->cfg.if_dvbt_8;
                        i = DVBT_8;
                        break;
                default:
@@ -205,15 +205,15 @@ static int tda18212_set_params(struct dvb_frontend *fe)
        case SYS_DVBT2:
                switch (c->bandwidth_hz) {
                case 6000000:
-                       if_khz = priv->cfg->if_dvbt2_6;
+                       if_khz = priv->cfg.if_dvbt2_6;
                        i = DVBT2_6;
                        break;
                case 7000000:
-                       if_khz = priv->cfg->if_dvbt2_7;
+                       if_khz = priv->cfg.if_dvbt2_7;
                        i = DVBT2_7;
                        break;
                case 8000000:
-                       if_khz = priv->cfg->if_dvbt2_8;
+                       if_khz = priv->cfg.if_dvbt2_8;
                        i = DVBT2_8;
                        break;
                default:
@@ -223,7 +223,7 @@ static int tda18212_set_params(struct dvb_frontend *fe)
                break;
        case SYS_DVBC_ANNEX_A:
        case SYS_DVBC_ANNEX_C:
-               if_khz = priv->cfg->if_dvbc;
+               if_khz = priv->cfg.if_dvbc;
                i = DVBC_8;
                break;
        default:
@@ -266,7 +266,7 @@ exit:
        return ret;
 
 error:
-       dev_dbg(&priv->i2c->dev, "%s: failed=%d\n", __func__, ret);
+       dev_dbg(&priv->client->dev, "%s: failed=%d\n", __func__, ret);
        goto exit;
 }
 
@@ -279,13 +279,6 @@ static int tda18212_get_if_frequency(struct dvb_frontend *fe, u32 *frequency)
        return 0;
 }
 
-static int tda18212_release(struct dvb_frontend *fe)
-{
-       kfree(fe->tuner_priv);
-       fe->tuner_priv = NULL;
-       return 0;
-}
-
 static const struct dvb_tuner_ops tda18212_tuner_ops = {
        .info = {
                .name           = "NXP TDA18212",
@@ -295,34 +288,36 @@ static const struct dvb_tuner_ops tda18212_tuner_ops = {
                .frequency_step =      1000,
        },
 
-       .release       = tda18212_release,
-
        .set_params    = tda18212_set_params,
        .get_if_frequency = tda18212_get_if_frequency,
 };
 
-struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
-       struct i2c_adapter *i2c, struct tda18212_config *cfg)
+static int tda18212_probe(struct i2c_client *client,
+               const struct i2c_device_id *id)
 {
-       struct tda18212_priv *priv = NULL;
+       struct tda18212_config *cfg = client->dev.platform_data;
+       struct dvb_frontend *fe = cfg->fe;
+       struct tda18212_priv *priv;
        int ret;
        u8 chip_id = chip_id;
        char *version;
 
-       priv = kzalloc(sizeof(struct tda18212_priv), GFP_KERNEL);
-       if (priv == NULL)
-               return NULL;
+       priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+       if (!priv) {
+               ret = -ENOMEM;
+               dev_err(&client->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME);
+               goto err;
+       }
 
-       priv->cfg = cfg;
-       priv->i2c = i2c;
-       fe->tuner_priv = priv;
+       memcpy(&priv->cfg, cfg, sizeof(struct tda18212_config));
+       priv->client = client;
 
+       /* check if the tuner is there */
        if (fe->ops.i2c_gate_ctrl)
                fe->ops.i2c_gate_ctrl(fe, 1); /* open I2C-gate */
 
-       /* check if the tuner is there */
        ret = tda18212_rd_reg(priv, 0x00, &chip_id);
-       dev_dbg(&priv->i2c->dev, "%s: chip_id=%02x\n", __func__, chip_id);
+       dev_dbg(&priv->client->dev, "%s: chip_id=%02x\n", __func__, chip_id);
 
        if (fe->ops.i2c_gate_ctrl)
                fe->ops.i2c_gate_ctrl(fe, 0); /* close I2C-gate */
@@ -338,23 +333,57 @@ struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
                version = "S"; /* slave */
                break;
        default:
+               ret = -ENODEV;
                goto err;
        }
 
-       dev_info(&priv->i2c->dev,
+       dev_info(&priv->client->dev,
                        "%s: NXP TDA18212HN/%s successfully identified\n",
                        KBUILD_MODNAME, version);
 
+       fe->tuner_priv = priv;
        memcpy(&fe->ops.tuner_ops, &tda18212_tuner_ops,
-               sizeof(struct dvb_tuner_ops));
+                       sizeof(struct dvb_tuner_ops));
+       i2c_set_clientdata(client, priv);
 
-       return fe;
+       return 0;
 err:
-       dev_dbg(&i2c->dev, "%s: failed=%d\n", __func__, ret);
+       dev_dbg(&client->dev, "%s: failed=%d\n", __func__, ret);
        kfree(priv);
-       return NULL;
+       return ret;
 }
-EXPORT_SYMBOL(tda18212_attach);
+
+static int tda18212_remove(struct i2c_client *client)
+{
+       struct tda18212_priv *priv = i2c_get_clientdata(client);
+       struct dvb_frontend *fe = priv->cfg.fe;
+
+       dev_dbg(&client->dev, "%s:\n", __func__);
+
+       memset(&fe->ops.tuner_ops, 0, sizeof(struct dvb_tuner_ops));
+       fe->tuner_priv = NULL;
+       kfree(priv);
+
+       return 0;
+}
+
+static const struct i2c_device_id tda18212_id[] = {
+       {"tda18212", 0},
+       {}
+};
+MODULE_DEVICE_TABLE(i2c, tda18212_id);
+
+static struct i2c_driver tda18212_driver = {
+       .driver = {
+               .owner  = THIS_MODULE,
+               .name   = "tda18212",
+       },
+       .probe          = tda18212_probe,
+       .remove         = tda18212_remove,
+       .id_table       = tda18212_id,
+};
+
+module_i2c_driver(tda18212_driver);
 
 MODULE_DESCRIPTION("NXP TDA18212HN silicon tuner driver");
 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");

diff --git a/drivers/media/tuners/tda18212.h b/drivers/media/tuners/tda18212.h
index 265559a..e58c909 100644 (file)
--- a/drivers/media/tuners/tda18212.h
+++ b/drivers/media/tuners/tda18212.h
@@ -25,8 +25,6 @@
 #include "dvb_frontend.h"
 
 struct tda18212_config {
-       u8 i2c_address;
-
        u16 if_dvbt_6;
        u16 if_dvbt_7;
        u16 if_dvbt_8;
@@ -44,16 +42,4 @@ struct tda18212_config {
        struct dvb_frontend *fe;
 };
 
-#if IS_ENABLED(CONFIG_MEDIA_TUNER_TDA18212)
-extern struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
-       struct i2c_adapter *i2c, struct tda18212_config *cfg);
-#else
-static inline struct dvb_frontend *tda18212_attach(struct dvb_frontend *fe,
-       struct i2c_adapter *i2c, struct tda18212_config *cfg)
-{
-       printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
-       return NULL;
-}
-#endif
-
 #endif