Merge branch 'master' into 'master'

Improve the Linux 6.8+ compat patch, fix building on 6.10+

Closes torvalds#44

See merge request ddcci-driver-linux/ddcci-driver-linux!16

Author: cgrenz

ddcci-backlight/ddcci-backlight.c

@@ -88,13 +88,23 @@ static int ddcci_monitor_readctrl(struct ddcci_device *device,
 	return -EIO;
 }
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 10, 0)
+static bool ddcci_backlight_controls_device(struct backlight_device *bl,
+				   struct device *display_dev)
+{
+	struct ddcci_monitor_drv_data *drv_data = bl_get_data(bl);
+
+	return drv_data->fb_dev == NULL || drv_data->fb_dev == display_dev;
+}
+#else
 static int ddcci_backlight_check_fb(struct backlight_device *bl,
 				   struct fb_info *info)
 {
 	struct ddcci_monitor_drv_data *drv_data = bl_get_data(bl);
 
 	return drv_data->fb_dev == NULL || drv_data->fb_dev == info->dev;
 }
+#endif
 
 static int ddcci_backlight_update_status(struct backlight_device *bl)
 {
@@ -135,7 +145,11 @@ static const struct backlight_ops ddcci_backlight_ops = {
 	.options	= 0,
 	.update_status	= ddcci_backlight_update_status,
 	.get_brightness = ddcci_backlight_get_brightness,
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 10, 0)
+	.controls_device = ddcci_backlight_controls_device,
+#else
 	.check_fb	= ddcci_backlight_check_fb,
+#endif
 };
 
 static const char *ddcci_monitor_vcp_name(unsigned char vcp)

ddcci/ddcci.c

@@ -1824,7 +1824,9 @@ static struct i2c_driver ddcci_driver = {
 	#else
 	.remove		= ddcci_remove,
 	#endif
-	.class		= I2C_CLASS_SPD,
+	#if LINUX_VERSION_CODE < KERNEL_VERSION(6, 8, 0)
+	.class		= I2C_CLASS_DDC,
+	#endif
 	.detect		= ddcci_detect,
 	.address_list	= I2C_ADDRS(
 		DDCCI_DEFAULT_DEVICE_ADDR>>1
@@ -1840,6 +1842,11 @@ static int __init ddcci_module_init(void)
 	int ret;
 
 	pr_debug("initializing ddcci driver\n");
+
+	#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 8, 0)
+	pr_warn("WARNING: Auto-probing of displays is not available on kernel 6.8 and later\n");
+	#endif
+
 	/* Allocate a device number region for the character devices */
 	ret = alloc_chrdev_region(&ddcci_cdev_first, 0, 128, DEVICE_NAME);
 	if (ret < 0) {