t2

Signed-off-by: Peter Jung <admin@ptr1337.dev>

Author: ptr1337

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

@@ -2343,6 +2343,9 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 	int ret, retry = 0, i;
 	bool supports_atomic = false;
 
+	if (vga_switcheroo_client_probe_defer(pdev))
+		return -EPROBE_DEFER;
+
 	if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA ||
 	    (pdev->class >> 8) == PCI_CLASS_DISPLAY_OTHER) {
 		if (drm_firmware_drivers_only() && amdgpu_modeset == -1)

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -4868,6 +4868,9 @@ static bool intel_ddi_a_force_4_lanes(struct intel_digital_port *dig_port)
 	if (dig_port->ddi_a_4_lanes)
 		return false;
 
+	if (intel_has_quirk(display, QUIRK_DDI_A_FORCE_4_LANES))
+		return true;
+
 	/* Broxton/Geminilake: Bspec says that DDI_A_4_LANES is the only
 	 *                     supported configuration
 	 */

drivers/gpu/drm/i915/display/intel_fbdev.c

@@ -253,10 +253,10 @@ int intel_fbdev_driver_fbdev_probe(struct drm_fb_helper *helper,
 	ifbdev->fb = NULL;
 
 	if (fb &&
-	    (sizes->fb_width > fb->base.width ||
-	     sizes->fb_height > fb->base.height)) {
+	    (sizes->fb_width != fb->base.width ||
+	     sizes->fb_height != fb->base.height)) {
 		drm_dbg_kms(display->drm,
-			    "BIOS fb too small (%dx%d), we require (%dx%d),"
+			    "BIOS fb not valid (%dx%d), we require (%dx%d),"
 			    " releasing it\n",
 			    fb->base.width, fb->base.height,
 			    sizes->fb_width, sizes->fb_height);

drivers/gpu/drm/i915/display/intel_quirks.c

@@ -66,6 +66,18 @@ static void quirk_increase_ddi_disabled_time(struct intel_display *display)
 	drm_info(display->drm, "Applying Increase DDI Disabled quirk\n");
 }
 
+/*
+ * In some cases, the firmware might not set the lane count to 4 (for example,
+ * when booting in some dual GPU Macs with the dGPU as the default GPU), this
+ * quirk is used to force it as otherwise it might not be possible to compute a
+ * valid link configuration.
+ */
+static void quirk_ddi_a_force_4_lanes(struct intel_display *display)
+{
+	intel_set_quirk(display, QUIRK_DDI_A_FORCE_4_LANES);
+	drm_info(display->drm, "Applying DDI A Forced 4 Lanes quirk\n");
+}
+
 static void quirk_no_pps_backlight_power_hook(struct intel_display *display)
 {
 	intel_set_quirk(display, QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK);
@@ -240,6 +252,10 @@ static struct intel_quirk intel_quirks[] = {
 
 	/* Dell XPS 13 7390 2-in-1 */
 	{ 0x8a52, 0x1028, 0x08b0, quirk_edp_limit_rate_hbr2 },
+	{ 0x8a12, 0x1028, 0x08b0, quirk_edp_limit_rate_hbr2 },
+
+	/* Apple MacBookPro15,1 */
+	{ 0x3e9b, 0x106b, 0x0176, quirk_ddi_a_force_4_lanes },
 };
 
 static const struct intel_dpcd_quirk intel_dpcd_quirks[] = {

drivers/gpu/drm/i915/display/intel_quirks.h

@@ -21,6 +21,7 @@ enum intel_quirk_id {
 	QUIRK_NO_PPS_BACKLIGHT_POWER_HOOK,
 	QUIRK_FW_SYNC_LEN,
 	QUIRK_EDP_LIMIT_RATE_HBR2,
+	QUIRK_DDI_A_FORCE_4_LANES,
 };
 
 void intel_init_quirks(struct intel_display *display);

drivers/gpu/vga/vga_switcheroo.c

@@ -438,12 +438,7 @@ find_active_client(struct list_head *head)
 bool vga_switcheroo_client_probe_defer(struct pci_dev *pdev)
 {
 	if (pci_is_display(pdev)) {
-		/*
-		 * apple-gmux is needed on pre-retina MacBook Pro
-		 * to probe the panel if pdev is the inactive GPU.
-		 */
-		if (apple_gmux_present() && pdev != vga_default_device() &&
-		    !vgasr_priv.handler_flags)
+		if (apple_gmux_present() && !vgasr_priv.handler_flags)
 			return true;
 	}
 

drivers/hid/Kconfig

@@ -140,7 +140,7 @@ config HID_APPLE
 	tristate "Apple {i,Power,Mac}Books"
 	depends on LEDS_CLASS
 	depends on NEW_LEDS
-	default !EXPERT
+	default !EXPERT || SPI_HID_APPLE
 	help
 	Support for some Apple devices which less or more break
 	HID specification.
@@ -736,11 +736,13 @@ config LOGIWHEELS_FF
 
 config HID_MAGICMOUSE
 	tristate "Apple Magic Mouse/Trackpad multi-touch support"
+	default SPI_HID_APPLE
 	help
 	Support for the Apple Magic Mouse/Trackpad multi-touch.
 
 	Say Y here if you want support for the multi-touch features of the
-	Apple Wireless "Magic" Mouse and the Apple Wireless "Magic" Trackpad.
+	Apple Wireless "Magic" Mouse, the Apple Wireless "Magic" Trackpad and
+	force touch Trackpads in Macbooks starting from 2015.
 
 config HID_MALTRON
 	tristate "Maltron L90 keyboard"
@@ -1455,4 +1457,8 @@ endif # HID
 
 source "drivers/hid/usbhid/Kconfig"
 
+source "drivers/hid/spi-hid/Kconfig"
+
+source "drivers/hid/dockchannel-hid/Kconfig"
+
 endif # HID_SUPPORT

drivers/hid/Makefile

@@ -178,3 +178,7 @@ obj-$(CONFIG_AMD_SFH_HID)       += amd-sfh-hid/
 obj-$(CONFIG_SURFACE_HID_CORE)  += surface-hid/
 
 obj-$(CONFIG_INTEL_THC_HID)     += intel-thc-hid/
+
+obj-$(CONFIG_SPI_HID_APPLE_CORE)	+= spi-hid/
+
+obj-$(CONFIG_HID_DOCKCHANNEL)   += dockchannel-hid/

drivers/hid/dockchannel-hid/Kconfig

@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0-only OR MIT
+menu "DockChannel HID support"
+	depends on APPLE_DOCKCHANNEL
+
+config HID_DOCKCHANNEL
+	tristate "HID over DockChannel transport layer for Apple Silicon SoCs"
+	default ARCH_APPLE
+	depends on APPLE_DOCKCHANNEL && INPUT && OF && HID
+	help
+	  Say Y here if you use an M2 or later Apple Silicon based laptop.
+	  The keyboard and touchpad are HID based devices connected via the
+	  proprietary DockChannel interface.
+
+endmenu

drivers/hid/dockchannel-hid/Makefile

@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only OR MIT
+#
+# Makefile for DockChannel HID transport drivers
+#
+
+obj-$(CONFIG_HID_DOCKCHANNEL)	+= dockchannel-hid.o