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drm/amdgpu: Define one variable for virtual display.

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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>
This commit is contained in:
Emily Deng 2016-08-08 11:37:29 +08:00 committed by Alex Deucher
parent e9ed3a67cd
commit e443059d0f
2 changed files with 5 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@ -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 */

4
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@ -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 */