> Implement support for initialization of the lm3533 als driver from
> Device Tree.
minor comment below
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
> ---
>
> Note that this patch can be merged independently of the other patches in the
> series.
>
> Changes since v5:
> - None
>
> Changes since v4:
> - None
>
> Changes since v3:
> - Moved als DT parsing from mfd driver
> - Gave driver its own compatible
>
> drivers/iio/light/lm3533-als.c | 40 +++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 39 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
> index f409c2047c05..eef9f06eb0b1 100644
> --- a/drivers/iio/light/lm3533-als.c
> +++ b/drivers/iio/light/lm3533-als.c
> @@ -20,6 +20,7 @@
> #include <linux/module.h>
> #include <linux/mutex.h>
> #include <linux/mfd/core.h>
> +#include <linux/of.h>
> #include <linux/platform_device.h>
> #include <linux/slab.h>
> #include <linux/uaccess.h>
> @@ -831,6 +832,32 @@ static const struct iio_info lm3533_als_info = {
> .read_raw = &lm3533_als_read_raw,
> };
>
> +static struct lm3533_als_platform_data *lm3533_als_of_parse(struct device *dev)
> +{
> + struct lm3533_als_platform_data *als_pdata;
> + struct device_node *node = dev->of_node;
> + int ret;
> + u32 val;
> +
> + als_pdata = devm_kzalloc(dev, sizeof(*als_pdata), GFP_KERNEL);
> + if (!als_pdata)
> + return NULL;
> +
> + als_pdata->pwm_mode = of_property_read_bool(node, "ti,pwm-mode");
> +
> + ret = of_property_read_u32(node, "ti,als-resistance-ohm", &val);
> + if (ret < 0 && ret != -EINVAL) {
> + dev_err(dev, "unable to read ti,als-resistance-ohm");
\n missing
> + return NULL;
> + }
> +
> + /* Leave at high-Z, if the property was omitted or specified as 0 */
> + if (!ret && val != 0)
> + als_pdata->r_select = 200000 / val;
> +
> + return als_pdata;
> +}
> +
> static int lm3533_als_probe(struct platform_device *pdev)
> {
> struct lm3533 *lm3533;
> @@ -843,7 +870,11 @@ static int lm3533_als_probe(struct platform_device *pdev)
> if (!lm3533)
> return -EINVAL;
>
> - pdata = pdev->dev.platform_data;
> + if (pdev->dev.of_node)
> + pdata = lm3533_als_of_parse(&pdev->dev);
> + else
> + pdata = pdev->dev.platform_data;
> +
> if (!pdata) {
> dev_err(&pdev->dev, "no platform data\n");
> return -EINVAL;
> @@ -914,9 +945,16 @@ static int lm3533_als_remove(struct platform_device *pdev)
> return 0;
> }
>
> +static const struct of_device_id lm3533_als_of_match[] = {
> + { .compatible = "ti,lm3533-als", },
> + { },
> +};
> +MODULE_DEVICE_TABLE(of, lm3533_als_of_match);
> +
> static struct platform_driver lm3533_als_driver = {
> .driver = {
> .name = "lm3533-als",
> + .of_match_table = lm3533_als_of_match,
> },
> .probe = lm3533_als_probe,
> .remove = lm3533_als_remove,
>
--
Peter Meerwald-Stadler
+43-664-2444418 (mobile)
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