[media] rtl2832: convert to use an explicit i2c mux core

Allocate an explicit i2c mux core to handle parent and child adapters
etc. Update the select/deselect ops to be in terms of the i2c mux core
instead of the child adapter.

Tested-by: Antti Palosaari <crope@iki.fi>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 7c96f76796691af6c58f6f4a3ea678cbcccb3dc6..1b23788797b50a6c178f544ea4e02d79c7026399 100644 (file)
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -847,9 +847,9 @@ err:
        dev_dbg(&client->dev, "failed=%d\n", ret);
 }
 
-static int rtl2832_select(struct i2c_adapter *adap, void *mux_priv, u32 chan_id)
+static int rtl2832_select(struct i2c_mux_core *muxc, u32 chan_id)
 {
-       struct rtl2832_dev *dev = mux_priv;
+       struct rtl2832_dev *dev = i2c_mux_priv(muxc);
        struct i2c_client *client = dev->client;
        int ret;
 
@@ -870,10 +870,9 @@ err:
        return ret;
 }
 
-static int rtl2832_deselect(struct i2c_adapter *adap, void *mux_priv,
-                           u32 chan_id)
+static int rtl2832_deselect(struct i2c_mux_core *muxc, u32 chan_id)
 {
-       struct rtl2832_dev *dev = mux_priv;
+       struct rtl2832_dev *dev = i2c_mux_priv(muxc);
 
        schedule_delayed_work(&dev->i2c_gate_work, usecs_to_jiffies(100));
        return 0;
@@ -1059,7 +1058,7 @@ static struct i2c_adapter *rtl2832_get_i2c_adapter(struct i2c_client *client)
        struct rtl2832_dev *dev = i2c_get_clientdata(client);
 
        dev_dbg(&client->dev, "\n");
-       return dev->i2c_adapter_tuner;
+       return dev->muxc->adapter[0];
 }
 
 static int rtl2832_slave_ts_ctrl(struct i2c_client *client, bool enable)
@@ -1242,12 +1241,16 @@ static int rtl2832_probe(struct i2c_client *client,
                goto err_regmap_exit;
 
        /* create muxed i2c adapter for demod tuner bus */
-       dev->i2c_adapter_tuner = i2c_add_mux_adapter(i2c, &i2c->dev, dev,
-                       0, 0, 0, rtl2832_select, rtl2832_deselect);
-       if (dev->i2c_adapter_tuner == NULL) {
-               ret = -ENODEV;
+       dev->muxc = i2c_mux_alloc(i2c, &i2c->dev, 1, 0, 0,
+                                 rtl2832_select, rtl2832_deselect);
+       if (!dev->muxc) {
+               ret = -ENOMEM;
                goto err_regmap_exit;
        }
+       dev->muxc->priv = dev;
+       ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
+       if (ret)
+               goto err_regmap_exit;
 
        /* create dvb_frontend */
        memcpy(&dev->fe.ops, &rtl2832_ops, sizeof(struct dvb_frontend_ops));
@@ -1282,7 +1285,7 @@ static int rtl2832_remove(struct i2c_client *client)
 
        cancel_delayed_work_sync(&dev->i2c_gate_work);
 
-       i2c_del_mux_adapter(dev->i2c_adapter_tuner);
+       i2c_mux_del_adapters(dev->muxc);
 
        regmap_exit(dev->regmap);
 

diff --git a/drivers/media/dvb-frontends/rtl2832_priv.h b/drivers/media/dvb-frontends/rtl2832_priv.h
index 6b875f462f8b35a984292828fb303cad0cdf37dc..d8f97d14f6fd5cdc2781d594e05d815bc059bc3c 100644 (file)
--- a/drivers/media/dvb-frontends/rtl2832_priv.h
+++ b/drivers/media/dvb-frontends/rtl2832_priv.h
@@ -36,7 +36,7 @@ struct rtl2832_dev {
        struct mutex regmap_mutex;
        struct regmap_config regmap_config;
        struct regmap *regmap;
-       struct i2c_adapter *i2c_adapter_tuner;
+       struct i2c_mux_core *muxc;
        struct dvb_frontend fe;
        enum fe_status fe_status;
        u64 post_bit_error_prev; /* for old DVBv3 read_ber() calculation */