Convert driver from DVB proprietary model to common I2C model.
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/tuners/tda18212.c | 129 ++++++++++++++++++++++++----------------
drivers/media/tuners/tda18212.h | 14 -----
2 files changed, 79 insertions(+), 64 deletions(-)
diff --git a/drivers/media/tuners/tda18212.c b/drivers/media/tuners/tda18212.c
index 15b09f8..659787b 100644
--- 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 = ®,
}, {
- .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@xxxxxx>");
diff --git a/drivers/media/tuners/tda18212.h b/drivers/media/tuners/tda18212.h
index 265559a..e58c909 100644
--- 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
--
http://palosaari.fi/
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