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modesetting: Load on GPU-s with 0 outputs

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In newer laptops with switchable graphics, the GPU may have 0 outputs,
in this case the modesetting driver should still load if the GPU is
SourceOffload capable, so that it can be used as an offload source provider.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
(cherry picked from commit 60ad701a6a)
This commit is contained in:
Hans de Goede 2016-06-14 11:58:01 +02:00 • committed by Adam Jackson
parent a9f970fe28
commit 713a21cc70
2 changed files with 24 additions and 11 deletions
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29
hw/xfree86/drivers/modesetting/driver.c
View file

@ -214,14 +214,26 @@ open_hw(const char *dev)
}
static int
check_outputs(int fd)
check_outputs(int fd, int *count)
{
drmModeResPtr res = drmModeGetResources(fd);
int ret;
if (!res)
return FALSE;
if (count)
*count = res->count_connectors;
ret = res->count_connectors > 0;
#if defined DRM_CAP_PRIME && GLAMOR_HAS_GBM_LINEAR
if (ret == FALSE) {
uint64_t value = 0;
if (drmGetCap(fd, DRM_CAP_PRIME, &value) == 0 &&
(value & DRM_PRIME_CAP_EXPORT))
ret = TRUE;
}
#endif
drmModeFreeResources(res);
return ret;
}
@ -236,13 +248,13 @@ probe_hw(const char *dev, struct xf86_platform_device *platform_dev)
fd = xf86_platform_device_odev_attributes(platform_dev)->fd;
if (fd == -1)
return FALSE;
return check_outputs(fd);
return check_outputs(fd, NULL);
}
#endif
fd = open_hw(dev);
if (fd != -1) {
int ret = check_outputs(fd);
int ret = check_outputs(fd, NULL);
close(fd);
return ret;
@ -285,7 +297,7 @@ probe_hw_pci(const char *dev, struct pci_device *pdev)
devid = ms_DRICreatePCIBusID(pdev);
if (id && devid && !strcmp(id, devid))
ret = check_outputs(fd);
ret = check_outputs(fd, NULL);
close(fd);
free(id);
@ -772,7 +784,7 @@ PreInit(ScrnInfoPtr pScrn, int flags)
EntityInfoPtr pEnt;
uint64_t value = 0;
int ret;
int bppflags;
int bppflags, connector_count;
int defaultdepth, defaultbpp;
if (pScrn->numEntities != 1)
@ -809,6 +821,9 @@ PreInit(ScrnInfoPtr pScrn, int flags)
return FALSE;
ms->drmmode.fd = ms->fd;
if (!check_outputs(ms->fd, &connector_count))
return FALSE;
drmmode_get_default_bpp(pScrn, &ms->drmmode, &defaultdepth, &defaultbpp);
if (defaultdepth == 24 && defaultbpp == 24)
bppflags = SupportConvert32to24 | Support24bppFb;
@ -888,7 +903,7 @@ PreInit(ScrnInfoPtr pScrn, int flags)
#ifdef DRM_CAP_PRIME
ret = drmGetCap(ms->fd, DRM_CAP_PRIME, &value);
if (ret == 0) {
if (value & DRM_PRIME_CAP_IMPORT) {
if (connector_count && (value & DRM_PRIME_CAP_IMPORT)) {
pScrn->capabilities |= RR_Capability_SinkOutput;
if (ms->drmmode.glamor)
pScrn->capabilities |= RR_Capability_SinkOffload;
@ -916,7 +931,7 @@ PreInit(ScrnInfoPtr pScrn, int flags)
}
}
if (pScrn->modes == NULL) {
if (!(pScrn->is_gpu && connector_count == 0) && pScrn->modes == NULL) {
xf86DrvMsg(pScrn->scrnIndex, X_ERROR, "No modes.\n");
return FALSE;
}

6
hw/xfree86/drivers/modesetting/drmmode_display.c
View file

@ -1639,10 +1639,8 @@ static Bool
drmmode_xf86crtc_resize(ScrnInfoPtr scrn, int width, int height)
{
xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
drmmode_crtc_private_ptr
drmmode_crtc = xf86_config->crtc[0]->driver_private;
drmmode_ptr drmmode = drmmode_crtc->drmmode;
modesettingPtr ms = modesettingPTR(scrn);
drmmode_ptr drmmode = &ms->drmmode;
drmmode_bo old_front;
Bool ret;
ScreenPtr screen = xf86ScrnToScreen(scrn);