Convert that driver to I2C driver model.
Legacy DVB binding is left also for later removal...
Signed-off-by: Antti Palosaari <crope@xxxxxx>
---
drivers/media/dvb-frontends/rtl2832.c | 108 +++++++++++++++++++++++++++++
drivers/media/dvb-frontends/rtl2832.h | 10 +++
drivers/media/dvb-frontends/rtl2832_priv.h | 1 +
3 files changed, 119 insertions(+)
diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 9026e1a..53b446a 100644
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -1183,6 +1183,114 @@ static struct dvb_frontend_ops rtl2832_ops = {
.i2c_gate_ctrl = rtl2832_i2c_gate_ctrl,
};
+static int rtl2832_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct rtl2832_platform_data *pdata = client->dev.platform_data;
+ const struct rtl2832_config *config = pdata->config;
+ struct i2c_adapter *i2c = client->adapter;
+ struct rtl2832_priv *priv;
+ int ret;
+ u8 tmp;
+
+ dev_dbg(&client->dev, "\n");
+
+ /* Caller really need to provide pointer for frontend we create. */
+ if (pdata->dvb_frontend == NULL) {
+ dev_err(&client->dev, "frontend pointer not defined\n");
+ ret = -EINVAL;
+ goto err;
+ }
+
+ /* allocate memory for the internal state */
+ priv = kzalloc(sizeof(struct rtl2832_priv), GFP_KERNEL);
+ if (priv == NULL) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ /* setup the priv */
+ priv->client = client;
+ priv->i2c = i2c;
+ priv->tuner = config->tuner;
+ priv->sleeping = true;
+ memcpy(&priv->cfg, config, sizeof(struct rtl2832_config));
+ INIT_DELAYED_WORK(&priv->i2c_gate_work, rtl2832_i2c_gate_work);
+
+ /* create muxed i2c adapter for demod itself */
+ priv->i2c_adapter = i2c_add_mux_adapter(i2c, &i2c->dev, priv, 0, 0, 0,
+ rtl2832_select, NULL);
+ if (priv->i2c_adapter == NULL) {
+ ret = -ENODEV;
+ goto err_kfree;
+ }
+
+ /* check if the demod is there */
+ ret = rtl2832_rd_reg(priv, 0x00, 0x0, &tmp);
+ if (ret)
+ goto err_i2c_del_mux_adapter;
+
+ /* create muxed i2c adapter for demod tuner bus */
+ priv->i2c_adapter_tuner = i2c_add_mux_adapter(i2c, &i2c->dev, priv,
+ 0, 1, 0, rtl2832_select, rtl2832_deselect);
+ if (priv->i2c_adapter_tuner == NULL) {
+ ret = -ENODEV;
+ goto err_i2c_del_mux_adapter;
+ }
+
+ /* create dvb_frontend */
+ memcpy(&priv->fe.ops, &rtl2832_ops, sizeof(struct dvb_frontend_ops));
+ priv->fe.ops.release = NULL;
+ priv->fe.demodulator_priv = priv;
+ i2c_set_clientdata(client, priv);
+ *pdata->dvb_frontend = &priv->fe;
+
+ dev_info(&client->dev, "Realtek RTL2832 successfully attached\n");
+ return 0;
+err_i2c_del_mux_adapter:
+ i2c_del_mux_adapter(priv->i2c_adapter);
+err_kfree:
+ kfree(priv);
+err:
+ dev_dbg(&client->dev, "failed=%d\n", ret);
+ return ret;
+}
+
+static int rtl2832_remove(struct i2c_client *client)
+{
+ struct rtl2832_priv *priv = i2c_get_clientdata(client);
+
+ dev_dbg(&client->dev, "\n");
+
+ cancel_delayed_work_sync(&priv->i2c_gate_work);
+
+ i2c_del_mux_adapter(priv->i2c_adapter_tuner);
+
+ i2c_del_mux_adapter(priv->i2c_adapter);
+
+ kfree(priv);
+
+ return 0;
+}
+
+static const struct i2c_device_id rtl2832_id_table[] = {
+ {"rtl2832", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, rtl2832_id_table);
+
+static struct i2c_driver rtl2832_driver = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "rtl2832",
+ },
+ .probe = rtl2832_probe,
+ .remove = rtl2832_remove,
+ .id_table = rtl2832_id_table,
+};
+
+module_i2c_driver(rtl2832_driver);
+
MODULE_AUTHOR("Thomas Mair <mair.thomas86@xxxxxxxxx>");
MODULE_DESCRIPTION("Realtek RTL2832 DVB-T demodulator driver");
MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb-frontends/rtl2832.h b/drivers/media/dvb-frontends/rtl2832.h
index 5254c1d..cfd69d8 100644
--- a/drivers/media/dvb-frontends/rtl2832.h
+++ b/drivers/media/dvb-frontends/rtl2832.h
@@ -50,6 +50,16 @@ struct rtl2832_config {
u8 tuner;
};
+struct rtl2832_platform_data {
+ const struct rtl2832_config *config;
+
+ /*
+ * frontend
+ * returned by driver
+ */
+ struct dvb_frontend **dvb_frontend;
+};
+
#if IS_ENABLED(CONFIG_DVB_RTL2832)
struct dvb_frontend *rtl2832_attach(
const struct rtl2832_config *cfg,
diff --git a/drivers/media/dvb-frontends/rtl2832_priv.h b/drivers/media/dvb-frontends/rtl2832_priv.h
index ae469f0..05b2b62 100644
--- a/drivers/media/dvb-frontends/rtl2832_priv.h
+++ b/drivers/media/dvb-frontends/rtl2832_priv.h
@@ -26,6 +26,7 @@
#include <linux/i2c-mux.h>
struct rtl2832_priv {
+ struct i2c_client *client;
struct i2c_adapter *i2c;
struct i2c_adapter *i2c_adapter;
struct i2c_adapter *i2c_adapter_tuner;
--
http://palosaari.fi/
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