backlight: hx8357: Make use of device properties

Convert the module to be property provider agnostic and allow
it to be used on non-OF platforms.

Include mod_devicetable.h explicitly to replace the dropped of.h
which included mod_devicetable.h indirectly.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20240201144951.294215-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Lee Jones <lee@kernel.org>

drivers/video/backlight/hx8357.c

@@ -8,9 +8,9 @@
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
 #include <linux/lcd.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 
 #define HX8357_NUM_IM_PINS	3
@@ -564,6 +564,8 @@ static struct lcd_ops hx8357_ops = {
 	.get_power	= hx8357_get_power,
 };
 
+typedef int (*hx8357_init_fn)(struct lcd_device *);
+
 static const struct of_device_id hx8357_dt_ids[] = {
 	{
 		.compatible = "himax,hx8357",
@@ -582,7 +584,7 @@ static int hx8357_probe(struct spi_device *spi)
 	struct device *dev = &spi->dev;
 	struct lcd_device *lcdev;
 	struct hx8357_data *lcd;
-	const struct of_device_id *match;
+	hx8357_init_fn init_fn;
 	int i, ret;
 
 	lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);
@@ -597,8 +599,8 @@ static int hx8357_probe(struct spi_device *spi)
 
 	lcd->spi = spi;
 
-	match = of_match_device(hx8357_dt_ids, &spi->dev);
-	if (!match || !match->data)
+	init_fn = device_get_match_data(dev);
+	if (!init_fn)
 		return -EINVAL;
 
 	lcd->reset = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
@@ -627,7 +629,7 @@ static int hx8357_probe(struct spi_device *spi)
 
 	hx8357_lcd_reset(lcdev);
 
-	ret = ((int (*)(struct lcd_device *))match->data)(lcdev);
+	ret = init_fn(lcdev);
 	if (ret) {
 		dev_err(&spi->dev, "Couldn't initialize panel\n");
 		return ret;