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drm/amdgpu: Define one variable for virtual display.
For virtual display feature, define on variable in amdgpu.ko. When want to enable virtual display feature, need set the option "amdgpu.virtual_display=1". And then disable vga render and crtc if have DCE engine. Signed-off-by: Emily Deng <Emily.Deng@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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2 changed files with 5 additions and 0 deletions
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@ -92,6 +92,7 @@ extern unsigned amdgpu_cg_mask;
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extern unsigned amdgpu_pg_mask;
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extern char *amdgpu_disable_cu;
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extern int amdgpu_sclk_deep_sleep_en;
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extern int amdgpu_virtual_display;
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#define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS 3000
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#define AMDGPU_MAX_USEC_TIMEOUT 100000 /* 100 ms */
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@ -90,6 +90,7 @@ unsigned amdgpu_pcie_lane_cap = 0;
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unsigned amdgpu_cg_mask = 0xffffffff;
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unsigned amdgpu_pg_mask = 0xffffffff;
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char *amdgpu_disable_cu = NULL;
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int amdgpu_virtual_display = 0;
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MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");
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module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
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@ -189,6 +190,9 @@ module_param_named(pg_mask, amdgpu_pg_mask, uint, 0444);
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MODULE_PARM_DESC(disable_cu, "Disable CUs (se.sh.cu,...)");
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module_param_named(disable_cu, amdgpu_disable_cu, charp, 0444);
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MODULE_PARM_DESC(virtual_display, "enable virtual display (0 = disable virtual display)");
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module_param_named(virtual_display, amdgpu_virtual_display, int, 0444);
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static const struct pci_device_id pciidlist[] = {
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#ifdef CONFIG_DRM_AMDGPU_CIK
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/* Kaveri */
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