@@ -20,10 +20,12 @@
/* mlxcpld_mux - mux control structure:
* @last_chan - last register value
* @client - I2C device client
+ * @pdata: platform data
*/
struct mlxcpld_mux {
u8 last_chan;
struct i2c_client *client;
+ struct mlxcpld_mux_plat_data pdata;
};
/* MUX logic description.
@@ -54,37 +56,30 @@ struct mlxcpld_mux {
*
*/
-static const struct i2c_device_id mlxcpld_mux_id[] = {
- { "mlxcpld_mux_module", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, mlxcpld_mux_id);
-
/* Write to mux register. Don't use i2c_transfer() and i2c_smbus_xfer()
* for this as they will try to lock adapter a second time.
*/
static int mlxcpld_mux_reg_write(struct i2c_adapter *adap,
- struct i2c_client *client, u8 val)
+ struct mlxcpld_mux *mux, u8 val)
{
- struct mlxcpld_mux_plat_data *pdata = dev_get_platdata(&client->dev);
+ struct i2c_client *client = mux->client;
union i2c_smbus_data data = { .byte = val };
return __i2c_smbus_xfer(adap, client->addr, client->flags,
- I2C_SMBUS_WRITE, pdata->sel_reg_addr,
+ I2C_SMBUS_WRITE, mux->pdata.sel_reg_addr,
I2C_SMBUS_BYTE_DATA, &data);
}
static int mlxcpld_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
{
- struct mlxcpld_mux *data = i2c_mux_priv(muxc);
- struct i2c_client *client = data->client;
+ struct mlxcpld_mux *mux = i2c_mux_priv(muxc);
u8 regval = chan + 1;
int err = 0;
/* Only select the channel if its different from the last channel */
- if (data->last_chan != regval) {
- err = mlxcpld_mux_reg_write(muxc->parent, client, regval);
- data->last_chan = err < 0 ? 0 : regval;
+ if (mux->last_chan != regval) {
+ err = mlxcpld_mux_reg_write(muxc->parent, mux, regval);
+ mux->last_chan = err < 0 ? 0 : regval;
}
return err;
@@ -92,21 +87,19 @@ static int mlxcpld_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
static int mlxcpld_mux_deselect(struct i2c_mux_core *muxc, u32 chan)
{
- struct mlxcpld_mux *data = i2c_mux_priv(muxc);
- struct i2c_client *client = data->client;
+ struct mlxcpld_mux *mux = i2c_mux_priv(muxc);
/* Deselect active channel */
- data->last_chan = 0;
+ mux->last_chan = 0;
- return mlxcpld_mux_reg_write(muxc->parent, client, data->last_chan);
+ return mlxcpld_mux_reg_write(muxc->parent, mux, mux->last_chan);
}
/* Probe/reomove functions */
-static int mlxcpld_mux_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int mlxcpld_mux_probe(struct platform_device *pdev)
{
- struct i2c_adapter *adap = client->adapter;
- struct mlxcpld_mux_plat_data *pdata = dev_get_platdata(&client->dev);
+ struct mlxcpld_mux_plat_data *pdata = dev_get_platdata(&pdev->dev);
+ struct i2c_client *client = to_i2c_client(pdev->dev.parent);
struct i2c_mux_core *muxc;
int num, force;
struct mlxcpld_mux *data;
@@ -115,18 +108,20 @@ static int mlxcpld_mux_probe(struct i2c_client *client,
if (!pdata)
return -EINVAL;
- if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
return -ENODEV;
- muxc = i2c_mux_alloc(adap, &client->dev, CPLD_MUX_MAX_NCHANS,
+ muxc = i2c_mux_alloc(client->adapter, &pdev->dev, CPLD_MUX_MAX_NCHANS,
sizeof(*data), 0, mlxcpld_mux_select_chan,
mlxcpld_mux_deselect);
if (!muxc)
return -ENOMEM;
+ platform_set_drvdata(pdev, muxc);
data = i2c_mux_priv(muxc);
- i2c_set_clientdata(client, muxc);
data->client = client;
+ memcpy(&data->pdata, pdata, sizeof(*pdata));
data->last_chan = 0; /* force the first selection */
/* Create an adapter for each channel. */
@@ -149,24 +144,23 @@ static int mlxcpld_mux_probe(struct i2c_client *client,
return err;
}
-static int mlxcpld_mux_remove(struct i2c_client *client)
+static int mlxcpld_mux_remove(struct platform_device *pdev)
{
- struct i2c_mux_core *muxc = i2c_get_clientdata(client);
+ struct i2c_mux_core *muxc = platform_get_drvdata(pdev);
i2c_mux_del_adapters(muxc);
return 0;
}
-static struct i2c_driver mlxcpld_mux_driver = {
- .driver = {
- .name = "mlxcpld-mux",
+static struct platform_driver mlxcpld_mux_driver = {
+ .driver = {
+ .name = "i2c-mux-mlxcpld",
},
- .probe = mlxcpld_mux_probe,
- .remove = mlxcpld_mux_remove,
- .id_table = mlxcpld_mux_id,
+ .probe = mlxcpld_mux_probe,
+ .remove = mlxcpld_mux_remove,
};
-module_i2c_driver(mlxcpld_mux_driver);
+module_platform_driver(mlxcpld_mux_driver);
MODULE_AUTHOR("Michael Shych (michaels@mellanox.com)");
MODULE_DESCRIPTION("Mellanox I2C-CPLD-MUX driver");