linux-kernel - [PATCH 5.15 138/230] drm/amdgpu: bind to any 0x1002 PCI diplay class device

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Date:   Mon, 11 Jul 2022 11:06:34 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Christian König <christian.koenig@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.15 138/230] drm/amdgpu: bind to any 0x1002 PCI diplay class device

From: Alex Deucher <alexander.deucher@....com>

[ Upstream commit eb4fd29afd4aa1c98d882800ceeee7d1f5262803 ]

Bind to all 0x1002 GPU devices.

For now we explicitly return -ENODEV for generic bindings.
Remove this check once IP discovery based checking is in place.

v2: rebase (Alex)

Reviewed-by: Christian König <christian.koenig@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index f65b4b233ffb..c294081022bd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -1952,6 +1952,16 @@ static const struct pci_device_id pciidlist[] = {
 	{0x1002, 0x7424, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_BEIGE_GOBY},
 	{0x1002, 0x743F, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_BEIGE_GOBY},
 
+	{ PCI_DEVICE(0x1002, PCI_ANY_ID),
+	  .class = PCI_CLASS_DISPLAY_VGA << 8,
+	  .class_mask = 0xffffff,
+	  .driver_data = 0 },
+
+	{ PCI_DEVICE(0x1002, PCI_ANY_ID),
+	  .class = PCI_CLASS_DISPLAY_OTHER << 8,
+	  .class_mask = 0xffffff,
+	  .driver_data = 0 },
+
 	{0, 0, 0}
 };
 
@@ -1999,6 +2009,11 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 			return -ENODEV;
 	}
 
+	if (flags == 0) {
+		DRM_INFO("Unsupported asic.  Remove me when IP discovery init is in place.\n");
+		return -ENODEV;
+	}
+
 	if (amdgpu_virtual_display ||
 	    amdgpu_device_asic_has_dc_support(flags & AMD_ASIC_MASK))
 		supports_atomic = true;
-- 
2.35.1