drm/amd/amdgpu: For virtual display, enable multi crtcs. (v3)
Enable multi crtcs for virtual display, user can set the number of crtcs
by amdgpu module parameter virtual_display.
v2: make timers per crtc
v3: agd: simplify implementation
Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-By: Emily Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 874c33b..22d3319 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1238,20 +1238,38 @@ static void amdgpu_device_enable_virtual_display(struct amdgpu_device *adev)
if (amdgpu_virtual_display) {
struct drm_device *ddev = adev->ddev;
const char *pci_address_name = pci_name(ddev->pdev);
- char *pciaddstr, *pciaddstr_tmp, *pciaddname;
+ char *pciaddstr, *pciaddstr_tmp, *pciaddname_tmp, *pciaddname;
pciaddstr = kstrdup(amdgpu_virtual_display, GFP_KERNEL);
pciaddstr_tmp = pciaddstr;
- while ((pciaddname = strsep(&pciaddstr_tmp, ";"))) {
+ while ((pciaddname_tmp = strsep(&pciaddstr_tmp, ";"))) {
+ pciaddname = strsep(&pciaddname_tmp, ",");
if (!strcmp(pci_address_name, pciaddname)) {
+ long num_crtc;
+ int res = -1;
+
adev->enable_virtual_display = true;
+
+ if (pciaddname_tmp)
+ res = kstrtol(pciaddname_tmp, 10,
+ &num_crtc);
+
+ if (!res) {
+ if (num_crtc < 1)
+ num_crtc = 1;
+ if (num_crtc > 6)
+ num_crtc = 6;
+ adev->mode_info.num_crtc = num_crtc;
+ } else {
+ adev->mode_info.num_crtc = 1;
+ }
break;
}
}
- DRM_INFO("virtual display string:%s, %s:virtual_display:%d\n",
- amdgpu_virtual_display, pci_address_name,
- adev->enable_virtual_display);
+ DRM_INFO("virtual display string:%s, %s:virtual_display:%d, num_crtc:%d\n",
+ amdgpu_virtual_display, pci_address_name,
+ adev->enable_virtual_display, adev->mode_info.num_crtc);
kfree(pciaddstr);
}