Re: [PATCH v1 1/4] drm/tiny/repaper: Make driver OF-independent

[Sam Ravnborg <sam@ravnborg.org>]

Hi Andy.


On Wed, Jan 22, 2020 at 12:54:00PM +0200, Andy Shevchenko wrote:
> There is one OF call in the driver that limits its area of use.
> Replace it to generic device_get_match_data() and get rid of OF dependency.
> 
> While here, cast SPI driver data to certain enumerator type.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
>  drivers/gpu/drm/tiny/repaper.c | 11 ++++++-----
>  1 file changed, 6 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tiny/repaper.c b/drivers/gpu/drm/tiny/repaper.c
> index 76d179200775..fd9e95ce3201 100644
> --- a/drivers/gpu/drm/tiny/repaper.c
> +++ b/drivers/gpu/drm/tiny/repaper.c
> @@ -17,7 +17,7 @@
>  #include <linux/dma-buf.h>
>  #include <linux/gpio/consumer.h>
>  #include <linux/module.h>
> -#include <linux/of_device.h>
> +#include <linux/property.h>
>  #include <linux/sched/clock.h>
>  #include <linux/spi/spi.h>
>  #include <linux/thermal.h>
> @@ -40,6 +40,7 @@
>  #define REPAPER_RID_G2_COG_ID	0x12
>  
>  enum repaper_model {
> +	EXXXXCSXXX = 0,
>  	E1144CS021 = 1,
>  	E1190CS021,
>  	E2200CS021,
The new enum value is not used in the following - is it necessary?

	Sam


> @@ -995,21 +996,21 @@ static int repaper_probe(struct spi_device *spi)
>  {
>  	const struct drm_display_mode *mode;
>  	const struct spi_device_id *spi_id;
> -	const struct of_device_id *match;
>  	struct device *dev = &spi->dev;
>  	enum repaper_model model;
>  	const char *thermal_zone;
>  	struct repaper_epd *epd;
>  	size_t line_buffer_size;
>  	struct drm_device *drm;
> +	const void *match;
>  	int ret;
>  
> -	match = of_match_device(repaper_of_match, dev);
> +	match = device_get_match_data(dev);
>  	if (match) {
> -		model = (enum repaper_model)match->data;
> +		model = (enum repaper_model)match;
>  	} else {
>  		spi_id = spi_get_device_id(spi);
> -		model = spi_id->driver_data;
> +		model = (enum repaper_model)spi_id->driver_data;
>  	}
>  
>  	/* The SPI device is used to allocate dma memory */
> -- 
> 2.24.1
> 
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