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Commit e443059d authored by Emily Deng's avatar Emily Deng Committed by Alex Deucher
Browse files

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: default avatarEmily Deng <Emily.Deng@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent e9ed3a67

drivers/gpu/drm/amd/amdgpu/amdgpu.h

+1 −0
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ extern unsigned amdgpu_cg_mask; 
extern unsigned amdgpu_pg_mask;

extern char *amdgpu_disable_cu;

extern int amdgpu_sclk_deep_sleep_en;

extern int amdgpu_virtual_display;



#define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS	        3000

#define AMDGPU_MAX_USEC_TIMEOUT			100000	/* 100 ms */

drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c

+4 −0
Original line number Diff line number Diff line
@@ -90,6 +90,7 @@ unsigned amdgpu_pcie_lane_cap = 0; 
unsigned amdgpu_cg_mask = 0xffffffff;

unsigned amdgpu_pg_mask = 0xffffffff;

char *amdgpu_disable_cu = NULL;

int amdgpu_virtual_display = 0;



MODULE_PARM_DESC(vramlimit, "Restrict VRAM for testing, in megabytes");

module_param_named(vramlimit, amdgpu_vram_limit, int, 0600);
@@ -189,6 +190,9 @@ module_param_named(pg_mask, amdgpu_pg_mask, uint, 0444); 
MODULE_PARM_DESC(disable_cu, "Disable CUs (se.sh.cu,...)");

module_param_named(disable_cu, amdgpu_disable_cu, charp, 0444);



MODULE_PARM_DESC(virtual_display, "enable virtual display (0 = disable virtual display)");

module_param_named(virtual_display, amdgpu_virtual_display, int, 0444);



static const struct pci_device_id pciidlist[] = {

#ifdef CONFIG_DRM_AMDGPU_CIK

	/* Kaveri */