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drm/amdgpu: adjust drm_firmware_drivers_only() handling

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Move to probe so we can check the PCI device type and
only apply the drm_firmware_drivers_only() check for
PCI DISPLAY classes.  Also add a module parameter to
override the nomodeset kernel parameter as a workaround
for platforms that have this hardcoded on their kernel
command lines.

Reviewed-by: Kent Russell <kent.russell@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2025-03-13 20:52:38 -04:00
parent 4db4c82d4d
commit e00e5c2238
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
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@@ -176,6 +176,7 @@ uint amdgpu_sdma_phase_quantum = 32;
char *amdgpu_disable_cu;
char *amdgpu_virtual_display;
bool enforce_isolation;
int amdgpu_modeset = -1;
/* Specifies the default granularity for SVM, used in buffer
* migration and restoration of backing memory when handling
@@ -1037,6 +1038,13 @@ module_param_named(user_partt_mode, amdgpu_user_partt_mode, uint, 0444);
module_param(enforce_isolation, bool, 0444);
MODULE_PARM_DESC(enforce_isolation, "enforce process isolation between graphics and compute . enforce_isolation = on");
/**
* DOC: modeset (int)
* Override nomodeset (1 = override, -1 = auto). The default is -1 (auto).
*/
MODULE_PARM_DESC(modeset, "Override nomodeset (1 = enable, -1 = auto)");
module_param_named(modeset, amdgpu_modeset, int, 0444);
/**
* DOC: seamless (int)
* Seamless boot will keep the image on the screen during the boot process.
@@ -2257,6 +2265,12 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
int ret, retry = 0, i;
bool supports_atomic = false;
if ((pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA ||
(pdev->class >> 8) == PCI_CLASS_DISPLAY_OTHER) {
if (drm_firmware_drivers_only() && amdgpu_modeset == -1)
return -EINVAL;
}
/* skip devices which are owned by radeon */
for (i = 0; i < ARRAY_SIZE(amdgpu_unsupported_pciidlist); i++) {
if (amdgpu_unsupported_pciidlist[i] == pdev->device)