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([171.61.161.234]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8231876e5d0sm5608273b3a.61.2026.01.24.16.12.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Jan 2026 16:12:11 -0800 (PST) From: Atharva Tiwari To: Cc: Atharva Tiwari , Ard Biesheuvel , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , David Airlie , Simona Vetter , Javier Martinez Canillas , Thomas Zimmermann , Ingo Molnar , "Borislav Petkov (AMD)" , Francesco Pompo , Lenny Szubowicz , linux-efi@vger.kernel.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH 1/2] efi/libstub: Enable apple-set-os for all Apple Devices Date: Sun, 25 Jan 2026 00:11:00 +0000 Message-ID: <20260125001111.1269-2-atharvatiwarilinuxdev@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260125001111.1269-1-atharvatiwarilinuxdev@gmail.com> References: <20260125001111.1269-1-atharvatiwarilinuxdev@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Enable apple-set-os on all macs, as apple-set-os is needed to use eGPUs and the iGPU. (tested on iMac20,1) Signed-off-by: Atharva Tiwari --- drivers/firmware/efi/libstub/x86-stub.c | 22 +++++----------------- 1 file changed, 5 insertions(+), 17 deletions(-) diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi= /libstub/x86-stub.c index cef32e2c82d8..60e1a41bfe5f 100644 --- a/drivers/firmware/efi/libstub/x86-stub.c +++ b/drivers/firmware/efi/libstub/x86-stub.c @@ -303,32 +303,20 @@ static const struct efi_smbios_record *get_table_reco= rd(u8 type) =20 static bool apple_match_product_name(void) { - static const char type1_product_matches[][15] =3D { - "MacBookPro11,3", - "MacBookPro11,5", - "MacBookPro13,3", - "MacBookPro14,3", - "MacBookPro15,1", - "MacBookPro15,3", - "MacBookPro16,1", - "MacBookPro16,4", - }; const struct efi_smbios_type1_record *record; - const u8 *product; + const u8 *vendor; =20 record =3D (struct efi_smbios_type1_record *) (efi_get_smbios_record(1) ?: get_table_record(1)); if (!record) return false; =20 - product =3D efi_get_smbios_string(record, product_name); 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([171.61.161.234]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-8231876e5d0sm5608273b3a.61.2026.01.24.16.12.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Jan 2026 16:12:15 -0800 (PST) From: Atharva Tiwari To: Cc: Atharva Tiwari , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , David Airlie , Simona Vetter , intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] drm/i915/display: Disable display for iMac's Date: Sun, 25 Jan 2026 00:11:01 +0000 Message-ID: <20260125001111.1269-3-atharvatiwarilinuxdev@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260125001111.1269-1-atharvatiwarilinuxdev@gmail.com> References: <20260125001111.1269-1-atharvatiwarilinuxdev@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Disable display on iMacs, as they can't do link training on the internal display. (tested on iMac20,1) Signed-off-by: Atharva Tiwari --- drivers/gpu/drm/i915/display/intel_display_device.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c b/drivers/= gpu/drm/i915/display/intel_display_device.c index 1170afaa8680..3fb47232e7a4 100644 --- a/drivers/gpu/drm/i915/display/intel_display_device.c +++ b/drivers/gpu/drm/i915/display/intel_display_device.c @@ -3,6 +3,7 @@ * Copyright =C2=A9 2023 Intel Corporation */ =20 +#include #include =20 #include @@ -1657,6 +1658,7 @@ struct intel_display *intel_display_device_probe(stru= ct pci_dev *pdev, const struct platform_desc *desc; const struct subplatform_desc *subdesc; enum intel_step step; + const char *product_name =3D dmi_get_system_info(DMI_PRODUCT_NAME); =20 display =3D kzalloc(sizeof(*display), GFP_KERNEL); if (!display) @@ -1674,6 +1676,11 @@ struct intel_display *intel_display_device_probe(str= uct pci_dev *pdev, goto no_display; } =20 + if (dmi_match(DMI_BOARD_VENDOR, "Apple Inc.") && !strncmp(product_name, "= iMac", 4)) { + drm_dbg_kms(display->drm, "iMac Detected, Disabling display\n"); + goto no_display; + } + desc =3D find_platform_desc(pdev); if (!desc) { drm_dbg_kms(display->drm, --=20 2.43.0