diff options
Diffstat (limited to 'drivers/iio/adc')
| -rw-r--r-- | drivers/iio/adc/ti_am335x_adc.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c index 543b9c42ac5f..b24402cb5432 100644 --- a/drivers/iio/adc/ti_am335x_adc.c +++ b/drivers/iio/adc/ti_am335x_adc.c @@ -22,6 +22,8 @@ #include <linux/platform_device.h> #include <linux/io.h> #include <linux/iio/iio.h> +#include <linux/of.h> +#include <linux/of_device.h> #include <linux/mfd/ti_am335x_tscadc.h> #include <linux/platform_data/ti_am335x_adc.h> @@ -152,11 +154,12 @@ static int tiadc_probe(struct platform_device *pdev) struct iio_dev *indio_dev; struct tiadc_device *adc_dev; struct ti_tscadc_dev *tscadc_dev = ti_tscadc_dev_get(pdev); - struct mfd_tscadc_board *pdata; + struct mfd_tscadc_board *pdata = tscadc_dev->dev->platform_data; + struct device_node *node = pdev->dev.of_node; int err; + u32 val32; - pdata = tscadc_dev->dev->platform_data; - if (!pdata || !pdata->adc_init) { + if (!pdata && !node) { dev_err(&pdev->dev, "Could not find platform data\n"); return -EINVAL; } @@ -169,8 +172,17 @@ static int tiadc_probe(struct platform_device *pdev) } adc_dev = iio_priv(indio_dev); - adc_dev->mfd_tscadc = tscadc_dev; - adc_dev->channels = pdata->adc_init->adc_channels; + adc_dev->mfd_tscadc = ti_tscadc_dev_get(pdev); + + if (pdata) + adc_dev->channels = pdata->adc_init->adc_channels; + else { + err = of_property_read_u32(node, + "ti,adc-channels", &val32); + if (err < 0) + goto err_free_device; + adc_dev->channels = val32; + } indio_dev->dev.parent = &pdev->dev; indio_dev->name = dev_name(&pdev->dev); @@ -260,11 +272,18 @@ static const struct dev_pm_ops tiadc_pm_ops = { #define TIADC_PM_OPS NULL #endif +static const struct of_device_id ti_adc_dt_ids[] = { + { .compatible = "ti,am3359-adc", }, + { } +}; +MODULE_DEVICE_TABLE(of, ti_adc_dt_ids); + static struct platform_driver tiadc_driver = { .driver = { .name = "tiadc", .owner = THIS_MODULE, .pm = TIADC_PM_OPS, + .of_match_table = of_match_ptr(ti_adc_dt_ids), }, .probe = tiadc_probe, .remove = tiadc_remove, |