backlight: lcd: Remove struct fb_videomode from set_mode callback

Implementations of struct lcd_ops.set_mode only require the resolution
from struct fb_videomode. Pass the xres and yres fields, but remove the
dependency on the fbdev data structure.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20240906075439.98476-28-tzimmermann@suse.de
Signed-off-by: Lee Jones <lee@kernel.org>

Author: Thomas Zimmermann

drivers/video/backlight/corgi_lcd.c

@@ -17,7 +17,6 @@
 #include <linux/init.h>
 #include <linux/delay.h>
 #include <linux/gpio/consumer.h>
-#include <linux/fb.h>
 #include <linux/lcd.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/corgi_lcd.h>
@@ -332,12 +331,12 @@ static void corgi_lcd_power_off(struct corgi_lcd *lcd)
 			POWER1_VW_OFF | POWER1_GVSS_OFF | POWER1_VDD_OFF);
 }
 
-static int corgi_lcd_set_mode(struct lcd_device *ld, struct fb_videomode *m)
+static int corgi_lcd_set_mode(struct lcd_device *ld, u32 xres, u32 yres)
 {
 	struct corgi_lcd *lcd = lcd_get_data(ld);
 	int mode = CORGI_LCD_MODE_QVGA;
 
-	if (m->xres == 640 || m->xres == 480)
+	if (xres == 640 || xres == 480)
 		mode = CORGI_LCD_MODE_VGA;
 
 	if (lcd->mode == mode)

drivers/video/backlight/lcd.c

@@ -65,8 +65,10 @@ static int fb_notifier_callback(struct notifier_block *self,
 		if (ld->ops->set_power)
 			ld->ops->set_power(ld, power);
 	} else {
+		const struct fb_videomode *videomode = evdata->data;
+
 		if (ld->ops->set_mode)
-			ld->ops->set_mode(ld, evdata->data);
+			ld->ops->set_mode(ld, videomode->xres, videomode->yres);
 	}
 
 	return 0;

drivers/video/backlight/tdo24m.c

@@ -12,7 +12,6 @@
 #include <linux/device.h>
 #include <linux/spi/spi.h>
 #include <linux/spi/tdo24m.h>
-#include <linux/fb.h>
 #include <linux/lcd.h>
 #include <linux/slab.h>
 
@@ -308,12 +307,12 @@ static int tdo24m_get_power(struct lcd_device *ld)
 	return lcd->power;
 }
 
-static int tdo24m_set_mode(struct lcd_device *ld, struct fb_videomode *m)
+static int tdo24m_set_mode(struct lcd_device *ld, u32 xres, u32 yres)
 {
 	struct tdo24m *lcd = lcd_get_data(ld);
 	int mode = MODE_QVGA;
 
-	if (m->xres == 640 || m->xres == 480)
+	if (xres == 640 || xres == 480)
 		mode = MODE_VGA;
 
 	if (lcd->mode == mode)

include/linux/lcd.h

@@ -51,8 +51,11 @@ struct lcd_ops {
 	int (*get_contrast)(struct lcd_device *);
 	/* Set LCD panel contrast */
         int (*set_contrast)(struct lcd_device *, int contrast);
-	/* Set LCD panel mode (resolutions ...) */
-	int (*set_mode)(struct lcd_device *, struct fb_videomode *);
+
+	/*
+	 * Set LCD panel mode (resolutions ...)
+	 */
+	int (*set_mode)(struct lcd_device *lcd, u32 xres, u32 yres);
 
 	/*
 	 * Check if the LCD controls the given display device. This