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ecore-drm2: Add API function to get possible crtc of a given output 

Signed-off-by: Chris Michael <cpmichael@osg.samsung.com>
This commit is contained in:
Chris Michael 2016-05-11 09:39:46 -04:00
parent 253f88b3ec
commit 0c0dd22b5f
2 changed files with 75 additions and 7 deletions
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16
src/lib/ecore_drm2/Ecore_Drm2.h
View File

@ -579,6 +579,22 @@ EAPI unsigned int ecore_drm2_output_connector_type_get(Ecore_Drm2_Output *output
*/
EAPI void ecore_drm2_output_resolution_get(Ecore_Drm2_Output *output, int *w, int *h, unsigned int *refresh);
/**
* Get if an output can be used on a given crtc
*
* This function will loop the possible crtcs of an encoder to determine if
* a given output can be assigned to a given crtc
*
* @param output
* @param crtc
*
* @return EINA_TRUE if the output can be assigned to given crtc, EINA_FALSE otherwise
*
* @ingroup Ecore_Drm2_Output_Group
* @since 1.18
*/
EAPI Eina_Bool ecore_drm2_output_possible_crtc_get(Ecore_Drm2_Output *output, unsigned int crtc);
/**
* @defgroup Ecore_Drm2_Fb_Group Drm framebuffer functions
*

66
src/lib/ecore_drm2/ecore_drm2_outputs.c
View File

@ -219,7 +219,7 @@ static int
_output_crtc_find(const drmModeRes *res, const drmModeConnector *conn, Ecore_Drm2_Device *dev)
{
drmModeEncoder *enc;
uint32_t pcrtcs;
uint32_t crtc;
int i = 0, j = 0;
for (j = 0; j < conn->count_encoders; j++)
@ -227,15 +227,12 @@ _output_crtc_find(const drmModeRes *res, const drmModeConnector *conn, Ecore_Drm
enc = drmModeGetEncoder(dev->fd, conn->encoders[j]);
if (!enc) continue;
pcrtcs = enc->possible_crtcs;
crtc = enc->crtc_id;
drmModeFreeEncoder(enc);
for (i = 0; i < res->count_crtcs; i++)
{
if ((pcrtcs & (1 << i)) &&
(!(dev->alloc.crtc & (1 << res->crtcs[i]))))
return i;
}
if (crtc == res->crtcs[i])
return i;
}
return -1;
@ -1091,3 +1088,58 @@ ecore_drm2_output_resolution_get(Ecore_Drm2_Output *output, int *w, int *h, unsi
if (h) *h = output->current_mode->height;
if (refresh) *refresh = output->current_mode->refresh;
}
EAPI Eina_Bool
ecore_drm2_output_possible_crtc_get(Ecore_Drm2_Output *output, unsigned int crtc)
{
drmModeRes *res;
drmModeConnector *conn;
drmModeEncoder *enc;
int i = 0, j = 0, k = 0;
unsigned int p = 0;
Eina_Bool ret = EINA_FALSE;
EINA_SAFETY_ON_NULL_RETURN_VAL(output, EINA_FALSE);
EINA_SAFETY_ON_TRUE_RETURN_VAL((output->fd < 0), EINA_FALSE);
res = drmModeGetResources(output->fd);
if (!res) return EINA_FALSE;
for (; i < res->count_connectors; i++)
{
conn = drmModeGetConnector(output->fd, res->connectors[i]);
if (!conn) continue;
for (j = 0; j < conn->count_encoders; j++)
{
enc = drmModeGetEncoder(output->fd, conn->encoders[j]);
if (!enc) continue;
if (enc->crtc_id != crtc) goto next;
p = enc->possible_crtcs;
for (k = 0; k < res->count_crtcs; k++)
{
if (res->crtcs[k] != output->crtc_id) continue;
if (p & (1 << k))
{
ret = EINA_TRUE;
break;
}
}
next:
drmModeFreeEncoder(enc);
if (ret) break;
}
drmModeFreeConnector(conn);
if (ret) break;
}
drmModeFreeResources(res);
return ret;
}