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iio: adc: axp20x_adc: make it possible to probe from DT 

To prepare for a future patch that will add a DT node for the ADC, make
axp20x_adc able to probe from DT and get the per-variant data from
of_device_id.data since platform_device_id.driver_data won't be set when
probing by DT.

Leave the ability to probe via platform for driver compatibility with
old DTs.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Quentin Schulz 2018-01-15 11:33:37 +01:00 committed by Jonathan Cameron
parent 22042a6e69
commit 359163d786
1 changed files with 18 additions and 1 deletions
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19
drivers/iio/adc/axp20x_adc.c
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@ -515,6 +515,13 @@ static const struct axp_data axp22x_data = {
.maps = axp22x_maps, .maps = axp22x_maps,
}; };
static const struct of_device_id axp20x_adc_of_match[] = {
{ .compatible = "x-powers,axp209-adc", .data = (void *)&axp20x_data, },
{ .compatible = "x-powers,axp221-adc", .data = (void *)&axp22x_data, },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, axp20x_adc_of_match);
static const struct platform_device_id axp20x_adc_id_match[] = { static const struct platform_device_id axp20x_adc_id_match[] = {
{ .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, }, { .name = "axp20x-adc", .driver_data = (kernel_ulong_t)&axp20x_data, },
{ .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, }, { .name = "axp22x-adc", .driver_data = (kernel_ulong_t)&axp22x_data, },
@ -543,7 +550,16 @@ static int axp20x_probe(struct platform_device *pdev)
indio_dev->dev.of_node = pdev->dev.of_node; indio_dev->dev.of_node = pdev->dev.of_node;
indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->modes = INDIO_DIRECT_MODE;
info->data = (struct axp_data *)platform_get_device_id(pdev)->driver_data; if (!pdev->dev.of_node) {
const struct platform_device_id *id;
id = platform_get_device_id(pdev);
info->data = (struct axp_data *)id->driver_data;
} else {
struct device *dev = &pdev->dev;
info->data = (struct axp_data *)of_device_get_match_data(dev);
}
indio_dev->name = platform_get_device_id(pdev)->name; indio_dev->name = platform_get_device_id(pdev)->name;
indio_dev->info = info->data->iio_info; indio_dev->info = info->data->iio_info;
@ -606,6 +622,7 @@ static int axp20x_remove(struct platform_device *pdev)
static struct platform_driver axp20x_adc_driver = { static struct platform_driver axp20x_adc_driver = {
.driver = { .driver = {
.name = "axp20x-adc", .name = "axp20x-adc",
.of_match_table = of_match_ptr(axp20x_adc_of_match),
}, },
.id_table = axp20x_adc_id_match, .id_table = axp20x_adc_id_match,
.probe = axp20x_probe, .probe = axp20x_probe,