drm/tiny/repaper: Make driver OF-independent

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.

Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: dri-devel@lists.freedesktop.org
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Lechner <david@lechnology.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200131204923.48928-1-andriy.shevchenko@linux.intel.com

diff --git a/drivers/gpu/drm/tiny/repaper.c b/drivers/gpu/drm/tiny/repaper.c
index 1834845..7883479 100644 (file)
--- 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>
@@ -39,6 +39,7 @@
 #define REPAPER_RID_G2_COG_ID  0x12
 
 enum repaper_model {
+       /* 0 is reserved to avoid clashing with NULL */
        E1144CS021 = 1,
        E1190CS021,
        E2200CS021,
@@ -986,21 +987,21 @@ 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 */