diff options
| author | Javier Martinez Canillas <javier@osg.samsung.com> | 2017-03-15 01:44:52 -0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2017-03-19 10:51:04 +0000 |
| commit | 8414af1ed18867b7d7c52fb52a427b4d5ac8a90c (patch) | |
| tree | b46b8f4fa6dcd9dcc4f16cec333bf3b63ae61528 /drivers/iio/dac/mcp4725.c | |
| parent | 49926b121674ed3e80e1a655ffd64ccf0e566efa (diff) | |
| download | linux-8414af1ed18867b7d7c52fb52a427b4d5ac8a90c.tar.bz2 | |
iio: dac: mcp4725: Add OF device ID table
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.
But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/dac/mcp4725.c')
| -rw-r--r-- | drivers/iio/dac/mcp4725.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c index db109f0cdd8c..6ab1f23e5a79 100644 --- a/drivers/iio/dac/mcp4725.c +++ b/drivers/iio/dac/mcp4725.c @@ -19,6 +19,7 @@ #include <linux/err.h> #include <linux/delay.h> #include <linux/regulator/consumer.h> +#include <linux/of_device.h> #include <linux/of.h> #include <linux/iio/iio.h> @@ -199,7 +200,7 @@ static ssize_t mcp4725_write_powerdown(struct iio_dev *indio_dev, return len; } -enum { +enum chip_id { MCP4725, MCP4726, }; @@ -406,7 +407,10 @@ static int mcp4725_probe(struct i2c_client *client, data = iio_priv(indio_dev); i2c_set_clientdata(client, indio_dev); data->client = client; - data->id = id->driver_data; + if (client->dev.of_node) + data->id = (enum chip_id)of_device_get_match_data(&client->dev); + else + data->id = id->driver_data; pdata = dev_get_platdata(&client->dev); if (!pdata) { @@ -525,9 +529,25 @@ static const struct i2c_device_id mcp4725_id[] = { }; MODULE_DEVICE_TABLE(i2c, mcp4725_id); +#ifdef CONFIG_OF +static const struct of_device_id mcp4725_of_match[] = { + { + .compatible = "microchip,mcp4725", + .data = (void *)MCP4725 + }, + { + .compatible = "microchip,mcp4726", + .data = (void *)MCP4726 + }, + { } +}; +MODULE_DEVICE_TABLE(of, mcp4725_of_match); +#endif + static struct i2c_driver mcp4725_driver = { .driver = { .name = MCP4725_DRV_NAME, + .of_match_table = of_match_ptr(mcp4725_of_match), .pm = MCP4725_PM_OPS, }, .probe = mcp4725_probe, |