Re: [PATCH 3/5] rtc: rtc-jz4740: Add support for devicetree

[Alexandre Belloni]

On 05/03/2016 at 23:38:49 +0100, Paul Cercueil wrote :
> Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> ---
>  drivers/rtc/rtc-jz4740.c | 16 +++++++++++++++-
>  1 file changed, 15 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c
> index 47617bd..3914b1c 100644
> --- a/drivers/rtc/rtc-jz4740.c
> +++ b/drivers/rtc/rtc-jz4740.c
> @@ -17,6 +17,7 @@
>  #include <linux/io.h>
>  #include <linux/kernel.h>
>  #include <linux/module.h>
> +#include <linux/of_device.h>
>  #include <linux/platform_device.h>
>  #include <linux/rtc.h>
>  #include <linux/slab.h>
> @@ -245,6 +246,13 @@ void jz4740_rtc_poweroff(struct device *dev)
>  }
>  EXPORT_SYMBOL_GPL(jz4740_rtc_poweroff);
>  
> +static const struct of_device_id jz4740_rtc_of_match[] = {
> +	{ .compatible = "ingenic,jz4740-rtc", .data = (void *) ID_JZ4740 },
> +	{ .compatible = "ingenic,jz4780-rtc", .data = (void *) ID_JZ4780 },

ingenic is not in Documentation/devicetree/bindings/vendor-prefixes.txt,
you have to add it there before using it.

Also, no space is necessary after the "(void *)" cast.

> +	{},
> +};
> +MODULE_DEVICE_TABLE(of, jz4740_rtc_of_match);
> +
>  static int jz4740_rtc_probe(struct platform_device *pdev)
>  {
>  	int ret;
> @@ -252,12 +260,17 @@ static int jz4740_rtc_probe(struct platform_device *pdev)
>  	uint32_t scratchpad;
>  	struct resource *mem;
>  	const struct platform_device_id *id = platform_get_device_id(pdev);
> +	const struct of_device_id *of_id = of_match_device(
> +			jz4740_rtc_of_match, &pdev->dev);
>  
>  	rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL);
>  	if (!rtc)
>  		return -ENOMEM;
>  
> -	rtc->type = id->driver_data;
> +	if (of_id)
> +		rtc->type = (enum jz4740_rtc_type) of_id->data;

No space after that cast either.

> +	else
> +		rtc->type = id->driver_data;
>  
>  	rtc->irq = platform_get_irq(pdev, 0);
>  	if (rtc->irq < 0) {
> @@ -345,6 +358,7 @@ static struct platform_driver jz4740_rtc_driver = {
>  	.driver	 = {
>  		.name  = "jz4740-rtc",
>  		.pm    = JZ4740_RTC_PM_OPS,
> +		.of_match_table = of_match_ptr(jz4740_rtc_of_match),
>  	},
>  	.id_table = jz4740_rtc_ids,
>  };
> -- 
> 2.7.0
> 

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com