[PATCH 29/43] drm/i915: copy&paste drm_crtc_helper_set_mode

[Daniel Vetter <daniel.vetter@ffwll.ch>]

Together with the static helpers drm_crtc_prepare_encoders and
drm_encoder_disable (which will be simplified in the next patch, but
for now are 1:1 copies). Again, no changes beside new names for these
functions.

Also call our new set_mode instead of the crtc helper one now in all
the places we've done so far.

Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
 drivers/gpu/drm/i915/intel_display.c |  160 +++++++++++++++++++++++++++++++++-
 drivers/gpu/drm/i915/intel_dp.c      |    6 +-
 drivers/gpu/drm/i915/intel_drv.h     |    4 +
 drivers/gpu/drm/i915/intel_hdmi.c    |    6 +-
 drivers/gpu/drm/i915/intel_lvds.c    |    5 +-
 drivers/gpu/drm/i915/intel_sdvo.c    |    4 +-
 drivers/gpu/drm/i915/intel_tv.c      |    4 +-
 7 files changed, 173 insertions(+), 16 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 0c15960..574a610 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5653,7 +5653,7 @@ bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
 		goto fail;
 	}
 
-	if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
+	if (!intel_crtc_set_mode(crtc, mode, 0, 0, old_fb)) {
 		DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
 		if (old->release_fb)
 			old->release_fb->funcs->destroy(old->release_fb);
@@ -6597,6 +6597,158 @@ intel_crtc_helper_disable(struct drm_crtc *crtc)
 	return 0;
 }
 
+static void
+intel_encoder_disable_helper(struct drm_encoder *encoder)
+{
+	struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
+
+	if (encoder_funcs->disable)
+		(*encoder_funcs->disable)(encoder);
+	else
+		(*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF);
+}
+
+static void
+intel_crtc_prepare_encoders(struct drm_device *dev)
+{
+	struct drm_encoder_helper_funcs *encoder_funcs;
+	struct drm_encoder *encoder;
+
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+		encoder_funcs = encoder->helper_private;
+		/* Disable unused encoders */
+		if (encoder->crtc == NULL)
+			intel_encoder_disable_helper(encoder);
+		/* Disable encoders whose CRTC is about to change */
+		if (encoder_funcs->get_crtc &&
+		    encoder->crtc != (*encoder_funcs->get_crtc)(encoder))
+			intel_encoder_disable_helper(encoder);
+	}
+}
+
+bool intel_crtc_set_mode(struct drm_crtc *crtc,
+			 struct drm_display_mode *mode,
+			 int x, int y,
+			 struct drm_framebuffer *old_fb)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode;
+	struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+	struct drm_encoder_helper_funcs *encoder_funcs;
+	int saved_x, saved_y;
+	struct drm_encoder *encoder;
+	bool ret = true;
+
+	crtc->enabled = drm_helper_crtc_in_use(crtc);
+	if (!crtc->enabled)
+		return true;
+
+	adjusted_mode = drm_mode_duplicate(dev, mode);
+	if (!adjusted_mode)
+		return false;
+
+	saved_hwmode = crtc->hwmode;
+	saved_mode = crtc->mode;
+	saved_x = crtc->x;
+	saved_y = crtc->y;
+
+	/* Update crtc values up front so the driver can rely on them for mode
+	 * setting.
+	 */
+	crtc->mode = *mode;
+	crtc->x = x;
+	crtc->y = y;
+
+	/* Pass our mode to the connectors and the CRTC to give them a chance to
+	 * adjust it according to limitations or connector properties, and also
+	 * a chance to reject the mode entirely.
+	 */
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+
+		if (encoder->crtc != crtc)
+			continue;
+		encoder_funcs = encoder->helper_private;
+		if (!(ret = encoder_funcs->mode_fixup(encoder, mode,
+						      adjusted_mode))) {
+			DRM_DEBUG_KMS("Encoder fixup failed\n");
+			goto done;
+		}
+	}
+
+	if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) {
+		DRM_DEBUG_KMS("CRTC fixup failed\n");
+		goto done;
+	}
+	DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id);
+
+	/* Prepare the encoders and CRTCs before setting the mode. */
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+
+		if (encoder->crtc != crtc)
+			continue;
+		encoder_funcs = encoder->helper_private;
+		/* Disable the encoders as the first thing we do. */
+		encoder_funcs->prepare(encoder);
+	}
+
+	intel_crtc_prepare_encoders(dev);
+
+	crtc_funcs->prepare(crtc);
+
+	/* Set up the DPLL and any encoders state that needs to adjust or depend
+	 * on the DPLL.
+	 */
+	ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb);
+	if (!ret)
+	    goto done;
+
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+
+		if (encoder->crtc != crtc)
+			continue;
+
+		DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n",
+			encoder->base.id, drm_get_encoder_name(encoder),
+			mode->base.id, mode->name);
+		encoder_funcs = encoder->helper_private;
+		encoder_funcs->mode_set(encoder, mode, adjusted_mode);
+	}
+
+	/* Now enable the clocks, plane, pipe, and connectors that we set up. */
+	crtc_funcs->commit(crtc);
+
+	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
+
+		if (encoder->crtc != crtc)
+			continue;
+
+		encoder_funcs = encoder->helper_private;
+		encoder_funcs->commit(encoder);
+
+	}
+
+	/* Store real post-adjustment hardware mode. */
+	crtc->hwmode = *adjusted_mode;
+
+	/* Calculate and store various constants which
+	 * are later needed by vblank and swap-completion
+	 * timestamping. They are derived from true hwmode.
+	 */
+	drm_calc_timestamping_constants(crtc);
+
+	/* FIXME: add subpixel order */
+done:
+	drm_mode_destroy(dev, adjusted_mode);
+	if (!ret) {
+		crtc->hwmode = saved_hwmode;
+		crtc->mode = saved_mode;
+		crtc->x = saved_x;
+		crtc->y = saved_y;
+	}
+
+	return ret;
+}
+
 static int intel_crtc_set_config(struct drm_mode_set *set)
 {
 	struct drm_device *dev;
@@ -6779,7 +6931,7 @@ static int intel_crtc_set_config(struct drm_mode_set *set)
 			drm_mode_debug_printmodeline(set->mode);
 			old_fb = set->crtc->fb;
 			set->crtc->fb = set->fb;
-			if (!drm_crtc_helper_set_mode(set->crtc, set->mode,
+			if (!intel_crtc_set_mode(set->crtc, set->mode,
 						      set->x, set->y,
 						      old_fb)) {
 				DRM_ERROR("failed to set mode on [CRTC:%d]\n",
@@ -6835,8 +6987,8 @@ fail:
 
 	/* Try to restore the config */
 	if (mode_changed &&
-	    !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x,
-				      save_set.y, save_set.fb))
+	    !intel_crtc_set_mode(save_set.crtc, save_set.mode, save_set.x,
+				 save_set.y, save_set.fb))
 		DRM_ERROR("failed to restore config after modeset failure\n");
 
 	kfree(save_connectors);
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index b7db872..162b000 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -2322,9 +2322,9 @@ intel_dp_set_property(struct drm_connector *connector,
 done:
 	if (intel_dp->base.base.crtc) {
 		struct drm_crtc *crtc = intel_dp->base.base.crtc;
-		drm_crtc_helper_set_mode(crtc, &crtc->mode,
-					 crtc->x, crtc->y,
-					 crtc->fb);
+		intel_crtc_set_mode(crtc, &crtc->mode,
+				    crtc->x, crtc->y,
+				    crtc->fb);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 5099440..b5544f0 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -373,6 +373,10 @@ extern void intel_panel_disable_backlight(struct drm_device *dev);
 extern void intel_panel_destroy_backlight(struct drm_device *dev);
 extern enum drm_connector_status intel_panel_detect(struct drm_device *dev);
 
+extern bool intel_crtc_set_mode(struct drm_crtc *crtc,
+				struct drm_display_mode *mode,
+				int x, int y,
+				struct drm_framebuffer *old_fb);
 extern void intel_crtc_load_lut(struct drm_crtc *crtc);
 extern void intel_crtc_update_dpms(struct drm_crtc *crtc);
 extern void intel_encoder_noop(struct drm_encoder *encoder);
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 1332367..4b99140 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -869,9 +869,9 @@ intel_hdmi_set_property(struct drm_connector *connector,
 done:
 	if (intel_hdmi->base.base.crtc) {
 		struct drm_crtc *crtc = intel_hdmi->base.base.crtc;
-		drm_crtc_helper_set_mode(crtc, &crtc->mode,
-					 crtc->x, crtc->y,
-					 crtc->fb);
+		intel_crtc_set_mode(crtc, &crtc->mode,
+				    crtc->x, crtc->y,
+				    crtc->fb);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
index 3a42474..3449706 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -560,8 +560,9 @@ static int intel_lvds_set_property(struct drm_connector *connector,
 			 * If the CRTC is enabled, the display will be changed
 			 * according to the new panel fitting mode.
 			 */
-			drm_crtc_helper_set_mode(crtc, &crtc->mode,
-				crtc->x, crtc->y, crtc->fb);
+			intel_crtc_set_mode(crtc, &crtc->mode,
+					    crtc->x, crtc->y,
+					    crtc->fb);
 		}
 	}
 
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c
index 284513b..35c47db 100644
--- a/drivers/gpu/drm/i915/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/intel_sdvo.c
@@ -1876,8 +1876,8 @@ set_value:
 done:
 	if (intel_sdvo->base.base.crtc) {
 		struct drm_crtc *crtc = intel_sdvo->base.base.crtc;
-		drm_crtc_helper_set_mode(crtc, &crtc->mode, crtc->x,
-					 crtc->y, crtc->fb);
+		intel_crtc_set_mode(crtc, &crtc->mode,
+				    crtc->x, crtc->y, crtc->fb);
 	}
 
 	return 0;
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index 3189f24..02c1da0 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1477,8 +1477,8 @@ intel_tv_set_property(struct drm_connector *connector, struct drm_property *prop
 	}
 
 	if (changed && crtc)
-		drm_crtc_helper_set_mode(crtc, &crtc->mode, crtc->x,
-				crtc->y, crtc->fb);
+		intel_crtc_set_mode(crtc, &crtc->mode,
+				    crtc->x, crtc->y, crtc->fb);
 out:
 	return ret;
 }
-- 
1.7.7.6