platform/x86: asus-wmi: Move acpi_backlight=vendor quirks to ACPI video_detect.c

Remove the asus-wmi quirk_entry.wmi_backlight_power quirk-flag, which
called acpi_video_set_dmi_backlight_type(acpi_backlight_vendor) and replace
it with acpi/video_detect.c video_detect_dmi_table[] entries using the
video_detect_force_vendor callback.

acpi_video_set_dmi_backlight_type() is troublesome because it may end up
getting called after other backlight drivers have already called
acpi_video_get_backlight_type() resulting in the other drivers
already being registered even though they should not.

Note no entries are dropped from the dmi_system_id table in asus-nb-wmi.c.
This is because the entries using the removed wmi_backlight_power flag
also use other model specific quirks from the asus-wmi quirk_entry struct.
So the quirk_asus_x55u struct and the entries pointing to it cannot be
dropped.

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

5 files changed, 41 insertions, 35 deletions

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 6a2523bc02ba..d893313fe1a0 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -175,6 +175,46 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		},
 	},
 	{
+	 .callback = video_detect_force_vendor,
+	 /* Asus X55U */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "X55U"),
+		},
+	},
+	{
+	 .callback = video_detect_force_vendor,
+	 /* Asus X101CH */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
+		},
+	},
+	{
+	 .callback = video_detect_force_vendor,
+	 /* Asus X401U */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "X401U"),
+		},
+	},
+	{
+	 .callback = video_detect_force_vendor,
+	 /* Asus X501U */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "X501U"),
+		},
+	},
+	{
+	 .callback = video_detect_force_vendor,
+	 /* Asus 1015CX */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
+		},
+	},
+	{
 	.callback = video_detect_force_vendor,
 	/* GIGABYTE GB-BXBT-2807 */
 	.matches = {
diff --git a/drivers/platform/x86/asus-nb-wmi.c b/drivers/platform/x86/asus-nb-wmi.c
index 478dd300b9c9..810a94557a85 100644
--- a/drivers/platform/x86/asus-nb-wmi.c
+++ b/drivers/platform/x86/asus-nb-wmi.c
@@ -79,12 +79,10 @@ static struct quirk_entry quirk_asus_q500a = {
 
 /*
  * For those machines that need software to control bt/wifi status
- * and can't adjust brightness through ACPI interface
  * and have duplicate events(ACPI and WMI) for display toggle
  */
 static struct quirk_entry quirk_asus_x55u = {
 	.wapf = 4,
-	.wmi_backlight_power = true,
 	.wmi_backlight_set_devstate = true,
 	.no_display_toggle = true,
 };
@@ -147,11 +145,6 @@ static const struct dmi_system_id asus_quirks[] = {
 			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."),
 			DMI_MATCH(DMI_PRODUCT_NAME, "U32U"),
 		},
-		/*
-		 * Note this machine has a Brazos APU, and most Brazos Asus
-		 * machines need quirk_asus_x55u / wmi_backlight_power but
-		 * here acpi-video seems to work fine for backlight control.
-		 */
 		.driver_data = &quirk_asus_wapf4,
 	},
 	{
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 301166a5697d..5cf9d9aff164 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -3634,9 +3634,6 @@ static int asus_wmi_add(struct platform_device *pdev)
 	if (asus->driver->quirks->wmi_force_als_set)
 		asus_wmi_set_als();
 
-	if (asus->driver->quirks->wmi_backlight_power)
-		acpi_video_set_dmi_backlight_type(acpi_backlight_vendor);
-
 	if (asus->driver->quirks->wmi_backlight_native)
 		acpi_video_set_dmi_backlight_type(acpi_backlight_native);
 
diff --git a/drivers/platform/x86/asus-wmi.h b/drivers/platform/x86/asus-wmi.h
index b302415bf1d9..30770e411301 100644
--- a/drivers/platform/x86/asus-wmi.h
+++ b/drivers/platform/x86/asus-wmi.h
@@ -29,7 +29,6 @@ struct quirk_entry {
 	bool hotplug_wireless;
 	bool scalar_panel_brightness;
 	bool store_backlight_power;
-	bool wmi_backlight_power;
 	bool wmi_backlight_native;
 	bool wmi_backlight_set_devstate;
 	bool wmi_force_als_set;
diff --git a/drivers/platform/x86/eeepc-wmi.c b/drivers/platform/x86/eeepc-wmi.c
index ce86d84ee796..32d9f0ba6be3 100644
--- a/drivers/platform/x86/eeepc-wmi.c
+++ b/drivers/platform/x86/eeepc-wmi.c
@@ -96,11 +96,6 @@ static struct quirk_entry quirk_asus_et2012_type3 = {
 	.store_backlight_power = true,
 };
 
-static struct quirk_entry quirk_asus_x101ch = {
-	/* We need this when ACPI function doesn't do this well */
-	.wmi_backlight_power = true,
-};
-
 static struct quirk_entry *quirks;
 
 static void et2012_quirks(void)
@@ -151,25 +146,7 @@ static const struct dmi_system_id asus_quirks[] = {
 		},
 		.driver_data = &quirk_asus_unknown,
 	},
-	{
-		.callback = dmi_matched,
-		.ident = "ASUSTeK Computer INC. X101CH",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "X101CH"),
-		},
-		.driver_data = &quirk_asus_x101ch,
-	},
-	{
-		.callback = dmi_matched,
-		.ident = "ASUSTeK Computer INC. 1015CX",
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
-			DMI_MATCH(DMI_PRODUCT_NAME, "1015CX"),
-		},
-		.driver_data = &quirk_asus_x101ch,
-	},
-	{},
+	{}
 };
 
 static void eeepc_wmi_key_filter(struct asus_wmi_driver *asus_wmi, int *code,