From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 42EC3606A323 for ; Mon, 26 Oct 2026 08:44:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=cklDkuek Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A405510ECC3; Mon, 26 Oct 2026 08:44:00 +0000 (UTC) Received: from mail-dy1-f171.google.com (mail-dy1-f171.google.com [74.125.82.171]) by gabe.freedesktop.org (Postfix) with ESMTPS id E644E10E57B for ; Sun, 25 Oct 2026 04:02:48 +0000 (UTC) Received: by mail-dy1-f171.google.com with SMTP id 5a478bee46e88-3535a54bed9so3242099eec.1 for ; Sat, 24 Oct 2026 21:02:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1792900968; x=1793505768; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=kIWFjWx6bY2aMzP1Dlox6FZiyYw6gduqI5+MEIlEj5E=; b=cklDkuek544JNBsdVjqKZNR+BcqNtDeXfljxkJfM7QB2XCy4arHVLqLdwWKDBr3sRd DWnPb958f7BxaL/AiNkUlJ7rYa58gJ4L8gQg53C7G+tm2dBXuiQp0H6UIMajCBeRbsi7 74N4KbFty5BZbaW19dR1JAcMrRf/CmtXUpzlR9AZnHs2kkuDu7TMBHYDxFwxEtQO8ajw Yz0ERBkPFVY2hWxzTU+5khvyI0DdZ1KLe+L5bMroTZjABrMEH6NpPkF0UvCGySQOoXTd 9JP19r6cywPv/VEZHmSf6IrZVKpJZ8jzkxFl3CCjgG2qn0rE+LcQvw/V7DCrq+fapXo7 vVLw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792900968; x=1793505768; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=kIWFjWx6bY2aMzP1Dlox6FZiyYw6gduqI5+MEIlEj5E=; b=jeoaPgt0MyImwo4SoiTKxB3xHVsGVnTVOmMva07qP84D/6Gh8KNCvSzvMHZfvfGuX0 inlv/YCSRBcw+3BWttlhTClW9Q2rOxLcFWgFHeAUhmBzJBigC4RpmJZxsbE+U3Ch/nRl XZF9V7gpaSvOxpytKK1QdABDAjDYcdhgg4r5kx7tLLANL438/MaAjHTsuJmTrYvQ47pt y4vMiGRCLzO6zLY0nqoe5U+A4EVo8rBrk4CKuPxycqAaMQRfkKV9CcddKBXZv/UY6iZ6 s0xlYdpRhYIpF4svR1FUwXJk7bdJ20ol/Yy0uPKvZ7UiXO+uYLHhQyajzFu/2vviwz7k yKGA== X-Forwarded-Encrypted: i=1; AKwUvBx4nhlhCQhUv5yOI2yzzR2tjf8b2SMOTsLwnP+twSVd6sQIBgHbEFHN/Z8A0aCf9M8TZIhpustJ@lists.freedesktop.org X-Gm-Message-State: AFq9FYKGEP4j2XVZLPH/ks4mwmAbQfpyuWZCvoKP1FofH94lZVpn+qnR QYtS5uT6YRpB1nUxIwllP3TPyn0mHMUXIeO9HOwIuqyjqnENYa/4S5s= X-Gm-Gg: AYBFou1jxppBRQd7vEWw8BzmQ4gKJrhQSv6KL+et6H7T+T9XR04n+rET4XHeZHWldWc R9wpfwO17KSn0adqumzpeIX2LESlGZ/qIj1LdHfoRqgGCei0S4TIhqPjsx8VGX8mNzaaKg6sIE2 I682a/PJJjeQ0TCZ9dWfvA8exLlbdmlR78YEuRIoB3kRZ+58I4T9g159tZZWhMuNXgsEVE4qfqV AD1xuo5Smywf+MaDjeX9E/opmdNDn4MFGwz47yAjp4dNsbfPYrut6BUrDFYKF0Vr3Tugq/Ghgrq 0hGvOPC7SynkSBcr9iTLBS+tnKjYa3hUUDbp9jmR9wfqlf1+HDcvbxTK/XsmPrpJ7eDgxENgY65 KZYAN+Ibk27axzB51Awlr/GS5GXzC8KI7rlJO/C6a8djy9Tk9cfQDJKL+7IL6o63w+GAWP592MT H5ZNJjYDBanM0kx7Ds30uulLH0UazOLgEVo4Gc0q5vwZgWF8tLW1rNNybcfSk1pEbCuGkxFMoEW GbNT4VqFD4WlM5EFqc/wmpfu6pilz729ILYuxAnyH5AcpvDu6TJS3J/DL6nvztIwul4GsdaU/Ug 7cQXt6S6ft2WeIV4 X-Received: by 2002:a05:701a:ca0b:b0:17d:7b45:f91f with SMTP id a92af1059eb24-1993580fcd2mr5442774c88.32.1792900968114; Sat, 24 Oct 2026 21:02:48 -0700 (PDT) Received: from at-Standard-PC-Q35-ICH9-2009 ([106.221.76.40]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-198a32ff780sm11635283c88.22.2026.10.24.21.02.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 24 Oct 2026 21:02:47 -0700 (PDT) From: Atharva Tiwari To: Cc: Atharva Tiwari , Bjorn Helgaas , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org (maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)), "H. Peter Anvin" , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , David Airlie , Simona Vetter , Harry Wentland , Leo Li , Rodrigo Siqueira , Kenneth Feng , Hans de Goede , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Andre Eikmeyer , linux-pci@vger.kernel.org (open list:PCI SUBSYSTEM), linux-kernel@vger.kernel.org (open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)), amd-gfx@lists.freedesktop.org (open list:RADEON and AMDGPU DRM DRIVERS), dri-devel@lists.freedesktop.org (open list:DRM DRIVERS), platform-driver-x86@vger.kernel.org (open list:X86 PLATFORM DRIVERS) Subject: [PATCH 06/13] platform/apple-gmux: Add parameter to configure boot gpu Date: Sat, 24 Oct 2026 23:59:42 -0400 Message-ID: <20261025040046.1602-7-atharvatiwarilinuxdev@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261025040046.1602-1-atharvatiwarilinuxdev@gmail.com> References: <20261025040046.1602-1-atharvatiwarilinuxdev@gmail.com> X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Mon, 26 Oct 2026 08:43:34 +0000 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "amd-gfx" X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Currently on Indexed and MMIO systems, the system can't change GPU's on runtime, as the display is not trained on the secondary GPU, to combat this, we add a module parameter to configure the boot GPU, so users can change to iGPU or dGPU via reboot. Signed-off-by: Atharva Tiwari --- drivers/platform/x86/apple-gmux.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c index 637b3b216..6a9580f27 100644 --- a/drivers/platform/x86/apple-gmux.c +++ b/drivers/platform/x86/apple-gmux.c @@ -109,6 +109,10 @@ struct apple_gmux_config { char *name; }; +static int boot_gpu = -1; +module_param(boot_gpu, int, 0); +MODULE_PARM_DESC(boot_gpu, "Configure the boot gpu (-1 = auto, 0 = iGPU, 1 = dGPU)"); + #define GMUX_INTERRUPT_ENABLE 0xff #define GMUX_INTERRUPT_DISABLE 0x00 @@ -1215,6 +1219,11 @@ static int gmux_probe(struct pnp_dev *pnp, const struct pnp_device_id *id) gmux_enable_interrupts(gmux_data, 1); gmux_read_switch_state(gmux_data); + if (boot_gpu == 0) + gmux_switchto(VGA_SWITCHEROO_IGD); + else if (boot_gpu == 1) + gmux_switchto(VGA_SWITCHEROO_DIS); + /* * Retina MacBook Pros cannot switch the panel's AUX separately * and need eDP pre-calibration. They are distinguishable from -- 2.55.0