Create drmmode_set_mode helper

Preparatory, no functional change intended yet.

(Ported from radeon commit 4bc992c31059eb50e22df4ebf5b92d08411f41ef)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

2 files changed, 52 insertions, 33 deletions

diff --git a/src/drmmode_display.c b/src/drmmode_display.c
index 285eb0a..6092805 100644
--- a/src/drmmode_display.c
+++ b/src/drmmode_display.c
@@ -796,6 +796,52 @@ drmmode_crtc_gamma_do_set(xf86CrtcPtr crtc, uint16_t *red, uint16_t *green,
 			    size, red, green, blue);
 }
 
+Bool
+drmmode_set_mode(xf86CrtcPtr crtc, struct drmmode_fb *fb, DisplayModePtr mode,
+		 int x, int y)
+{
+	ScrnInfoPtr scrn = crtc->scrn;
+	AMDGPUEntPtr pAMDGPUEnt = AMDGPUEntPriv(scrn);
+	xf86CrtcConfigPtr xf86_config = XF86_CRTC_CONFIG_PTR(scrn);
+	drmmode_crtc_private_ptr drmmode_crtc = crtc->driver_private;
+	uint32_t *output_ids = calloc(sizeof(uint32_t), xf86_config->num_output);
+	int output_count = 0;
+	drmModeModeInfo kmode;
+	Bool ret;
+	int i;
+
+	if (!output_ids)
+		return FALSE;
+
+	for (i = 0; i < xf86_config->num_output; i++) {
+		xf86OutputPtr output = xf86_config->output[i];
+		drmmode_output_private_ptr drmmode_output = output->driver_private;
+
+		if (output->crtc != crtc)
+			continue;
+
+		output_ids[output_count] = drmmode_output->mode_output->connector_id;
+		output_count++;
+	}
+
+	drmmode_ConvertToKMode(scrn, &kmode, mode);
+
+	ret = drmModeSetCrtc(pAMDGPUEnt->fd,
+			     drmmode_crtc->mode_crtc->crtc_id,
+			     fb->handle, x, y, output_ids,
+			     output_count, &kmode) == 0;
+
+	if (ret) {
+		drmmode_fb_reference(pAMDGPUEnt->fd, &drmmode_crtc->fb, fb);
+	} else {
+		xf86DrvMsg(scrn->scrnIndex, X_ERROR,
+			   "failed to set mode: %s\n", strerror(errno));
+	}
+
+	free(output_ids);
+	return ret;
+}
+
 static Bool
 drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
 		       Rotation rotation, int x, int y)
@@ -811,12 +857,9 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
 	int saved_x, saved_y;
 	Rotation saved_rotation;
 	DisplayModeRec saved_mode;
-	uint32_t *output_ids = NULL;
-	int output_count = 0;
 	Bool ret = FALSE;
 	int i;
 	struct drmmode_fb *fb = NULL;
-	drmModeModeInfo kmode;
 
 	/* The root window contents may be undefined before the WindowExposures
 	 * hook is called for it, so bail if we get here before that
@@ -835,23 +878,6 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
 		crtc->y = y;
 		crtc->rotation = rotation;
 
-		output_ids = calloc(sizeof(uint32_t), xf86_config->num_output);
-		if (!output_ids)
-			goto done;
-
-		for (i = 0; i < xf86_config->num_output; i++) {
-			xf86OutputPtr output = xf86_config->output[i];
-			drmmode_output_private_ptr drmmode_output;
-
-			if (output->crtc != crtc)
-				continue;
-
-			drmmode_output = output->driver_private;
-			output_ids[output_count] =
-			    drmmode_output->mode_output->connector_id;
-			output_count++;
-		}
-
 		if (!drmmode_handle_transform(crtc))
 			goto done;
 
@@ -862,8 +888,6 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
 		drmmode_crtc_gamma_do_set(crtc, crtc->gamma_red, crtc->gamma_green,
 					  crtc->gamma_blue, crtc->gamma_size);
 
-		drmmode_ConvertToKMode(crtc->scrn, &kmode, mode);
-
 #ifdef AMDGPU_PIXMAP_SHARING
 		if (drmmode_crtc->prime_scanout_pixmap) {
 			drmmode_crtc_prime_scanout_update(crtc, mode, scanout_id,
@@ -907,17 +931,10 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
 		drmmode_crtc_wait_pending_event(drmmode_crtc, pAMDGPUEnt->fd,
 						drmmode_crtc->flip_pending);
 
-		if (drmModeSetCrtc(pAMDGPUEnt->fd,
-				   drmmode_crtc->mode_crtc->crtc_id,
-				   fb->handle, x, y, output_ids,
-				   output_count, &kmode) != 0) {
-			xf86DrvMsg(crtc->scrn->scrnIndex, X_ERROR,
-				   "failed to set mode: %s\n", strerror(errno));
+		if (!drmmode_set_mode(crtc, fb, mode, x, y))
 			goto done;
-		} else {
-			ret = TRUE;
-			drmmode_fb_reference(pAMDGPUEnt->fd, &drmmode_crtc->fb, fb);
-		}
+
+		ret = TRUE;
 
 		if (pScreen)
 			xf86CrtcSetScreenSubpixelOrder(pScreen);
@@ -954,7 +971,6 @@ drmmode_set_mode_major(xf86CrtcPtr crtc, DisplayModePtr mode,
 #endif
 
 done:
-	free(output_ids);
 	if (!ret) {
 		crtc->x = saved_x;
 		crtc->y = saved_y;
diff --git a/src/drmmode_display.h b/src/drmmode_display.h
index 1a6454c..372a539 100644
--- a/src/drmmode_display.h
+++ b/src/drmmode_display.h
@@ -213,6 +213,9 @@ extern void drmmode_scanout_free(ScrnInfoPtr scrn);
 extern void drmmode_uevent_init(ScrnInfoPtr scrn, drmmode_ptr drmmode);
 extern void drmmode_uevent_fini(ScrnInfoPtr scrn, drmmode_ptr drmmode);
 
+Bool drmmode_set_mode(xf86CrtcPtr crtc, struct drmmode_fb *fb,
+		      DisplayModePtr mode, int x, int y);
+
 extern int drmmode_get_crtc_id(xf86CrtcPtr crtc);
 extern int drmmode_get_pitch_align(ScrnInfoPtr scrn, int bpe);
 Bool amdgpu_do_pageflip(ScrnInfoPtr scrn, ClientPtr client,