Nomodeset kernel parameter is for all graphics cards. Amdgpu cannot
be set separately in some scenarios, such as hybrid graphics(i + a).
Add modeset module parameter for amdgpu to set kernel mode separately.
Signed-off-by: Zhen Ni <nizhen@xxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 429fcdf28836..856a70370e3c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -107,6 +107,7 @@
#define KMS_DRIVER_MINOR 48
#define KMS_DRIVER_PATCHLEVEL 0
+int amdgpu_modeset = -1;
int amdgpu_vram_limit;
int amdgpu_vis_vram_limit;
int amdgpu_gart_size = -1; /* auto */
@@ -199,6 +200,13 @@ struct amdgpu_watchdog_timer amdgpu_watchdog_timer = {
.period = 0x0, /* default to 0x0 (timeout disable) */
};
+/**
+ * DOC: modeset (int)
+ * Disable/Enable kernel modesetting (1 = enable, 0 = disable, -1 = auto (default)).
+ */
+MODULE_PARM_DESC(modeset, "Disable/Enable kernel modesetting");
+module_param_named(modeset, amdgpu_modeset, int, 0400);
+
/**
* DOC: vramlimit (int)
* Restrict the total amount of VRAM in MiB for testing. The default is 0 (Use full VRAM).
@@ -2753,7 +2761,10 @@ static int __init amdgpu_init(void)
{
int r;
- if (drm_firmware_drivers_only())
+ if (drm_firmware_drivers_only() && amdgpu_modeset == -1)
+ amdgpu_modeset = 0;
+
+ if (amdgpu_modeset == 0)
return -EINVAL;
r = amdgpu_sync_init();
--
2.20.1
