disp: msm: sde: add hw fence support for prog line count

This change adds support for triggering output
hw fence upon programmable line count.

Change-Id: Ie4b8252e4f9a448a8c11d17696b9bb0ded81b04b
Signed-off-by: Christina Oliveira <quic_coliveir@quicinc.com>

msm/sde/sde_crtc.c

@@ -4626,7 +4626,7 @@ void sde_crtc_commit_kickoff(struct drm_crtc *crtc,
 	 * condition between txq update and the hw signal during ctl-done for partial updates
 	 */
 	if (test_bit(HW_FENCE_OUT_FENCES_ENABLE, sde_crtc->hwfence_features_mask) && !is_vid)
-		sde_fence_update_hw_fences_txq(sde_crtc->output_fence, false);
+		sde_fence_update_hw_fences_txq(sde_crtc->output_fence, false, 0);
 
 	list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
 		if (encoder->crtc != crtc)
@@ -6543,6 +6543,16 @@ static void sde_crtc_install_properties(struct drm_crtc *crtc,
 	vfree(info);
 }
 
+static bool _is_crtc_intf_mode_wb(struct drm_crtc *crtc)
+{
+	enum sde_intf_mode intf_mode = sde_crtc_get_intf_mode(crtc, crtc->state);
+
+	if ((intf_mode != INTF_MODE_WB_BLOCK) && (intf_mode != INTF_MODE_WB_LINE))
+		return false;
+
+	return true;
+}
+
 static int _sde_crtc_get_output_fence(struct drm_crtc *crtc,
 	const struct drm_crtc_state *state, uint64_t *val)
 {
@@ -6550,6 +6560,7 @@ static int _sde_crtc_get_output_fence(struct drm_crtc *crtc,
 	struct sde_crtc_state *cstate;
 	uint32_t offset;
 	bool is_vid = false;
+	bool is_wb = false;
 	struct drm_encoder *encoder;
 	struct sde_hw_ctl *hw_ctl = NULL;
 	static u32 count;
@@ -6558,10 +6569,12 @@ static int _sde_crtc_get_output_fence(struct drm_crtc *crtc,
 	cstate = to_sde_crtc_state(state);
 
 	drm_for_each_encoder_mask(encoder, crtc->dev, state->encoder_mask) {
-		if (sde_encoder_check_curr_mode(encoder,
-						MSM_DISPLAY_VIDEO_MODE))
+		if (sde_encoder_check_curr_mode(encoder, MSM_DISPLAY_VIDEO_MODE))
 			is_vid = true;
-		if (is_vid)
+		else if (_is_crtc_intf_mode_wb(crtc))
+			is_wb = true;
+
+		if (is_vid || is_wb)
 			break;
 	}
 
@@ -6570,7 +6583,7 @@ static int _sde_crtc_get_output_fence(struct drm_crtc *crtc,
 	 * to create a hw-fence for this ctl, whereas if hw_ctl is not passed to sde_fence, this
 	 * won't use hw-fences for this output-fence.
 	 */
-	if (test_bit(HW_FENCE_OUT_FENCES_ENABLE, sde_crtc->hwfence_features_mask) &&
+	if (!is_wb && test_bit(HW_FENCE_OUT_FENCES_ENABLE, sde_crtc->hwfence_features_mask) &&
 			(count++ % sde_crtc->hwfence_out_fences_skip))
 		hw_ctl = _sde_crtc_get_hw_ctl(crtc);
 

msm/sde/sde_encoder.c

@@ -3709,6 +3709,7 @@ int sde_encoder_idle_request(struct drm_encoder *drm_enc)
 static inline void _sde_encoder_update_retire_txq(struct sde_encoder_phys *phys)
 {
 	struct sde_connector *c_conn;
+	int line_count;
 
 	c_conn = to_sde_connector(phys->connector);
 	if (!c_conn) {
@@ -3716,8 +3717,10 @@ static inline void _sde_encoder_update_retire_txq(struct sde_encoder_phys *phys)
 		return;
 	}
 
+	line_count = sde_connector_get_property(phys->connector->state,
+			CONNECTOR_PROP_EARLY_FENCE_LINE);
 	if (c_conn->hwfence_wb_retire_fences_enable)
-		sde_fence_update_hw_fences_txq(c_conn->retire_fence, false);
+		sde_fence_update_hw_fences_txq(c_conn->retire_fence, false, line_count);
 }
 
 /**
@@ -3939,7 +3942,7 @@ void sde_encoder_helper_update_out_fence_txq(struct sde_encoder_virt *sde_enc, b
 	sde_crtc = to_sde_crtc(sde_enc->crtc);
 
 	SDE_EVT32(DRMID(sde_enc->crtc), is_vid);
-	sde_fence_update_hw_fences_txq(sde_crtc->output_fence, is_vid);
+	sde_fence_update_hw_fences_txq(sde_crtc->output_fence, is_vid, 0);
 }
 
 /**

msm/sde/sde_fence.c

@@ -251,7 +251,7 @@ int sde_fence_register_hw_fences_wait(struct sde_hw_ctl *hw_ctl, struct dma_fenc
 	return ret;
 }
 
-static int _arm_output_hw_fence(struct sde_hw_ctl *hw_ctl)
+static int _arm_output_hw_fence(struct sde_hw_ctl *hw_ctl, u32 line_count)
 {
 	struct sde_hw_fence_data *data;
 	u32 ipcc_out_signal;
@@ -284,12 +284,16 @@ static int _arm_output_hw_fence(struct sde_hw_ctl *hw_ctl)
 	SDE_EVT32_VERBOSE(ctl_id, ipcc_out_signal);
 
 	/* arm dpu to trigger output fence signal once ready */
-	hw_ctl->ops.hw_fence_trigger_output_fence(hw_ctl, HW_FENCE_TRIGGER_SEL_CTRL_DONE);
+	if (line_count)
+		hw_ctl->ops.hw_fence_trigger_output_fence(hw_ctl,
+			HW_FENCE_TRIGGER_SEL_PROG_LINE_COUNT);
+	else
+		hw_ctl->ops.hw_fence_trigger_output_fence(hw_ctl, HW_FENCE_TRIGGER_SEL_CTRL_DONE);
 
 	return 0;
 }
 
-static int _sde_fence_arm_output_hw_fence(struct sde_fence_context *ctx)
+static int _sde_fence_arm_output_hw_fence(struct sde_fence_context *ctx, u32 line_count)
 {
 	struct sde_hw_ctl *hw_ctl = NULL;
 	struct sde_fence *fc, *next;
@@ -326,13 +330,13 @@ static int _sde_fence_arm_output_hw_fence(struct sde_fence_context *ctx)
 
 	/* arm dpu to trigger output hw-fence ipcc signal upon completion */
 	if (hw_ctl)
-		_arm_output_hw_fence(hw_ctl);
+		_arm_output_hw_fence(hw_ctl, line_count);
 
 	return 0;
 }
 
 /* update output hw_fences txq */
-int sde_fence_update_hw_fences_txq(struct sde_fence_context *ctx, bool vid_mode)
+int sde_fence_update_hw_fences_txq(struct sde_fence_context *ctx, bool vid_mode, u32 line_count)
 {
 	int ret = 0;
 	struct sde_hw_fence_data *data;
@@ -404,8 +408,8 @@ exit:
 	spin_unlock(&ctx->list_lock);
 
 	/* arm dpu to trigger output hw-fence ipcc signal upon completion in vid-mode */
-	if (txq_updated && hw_ctl)
-		_sde_fence_arm_output_hw_fence(ctx);
+	if ((txq_updated && hw_ctl) || line_count)
+		_sde_fence_arm_output_hw_fence(ctx, line_count);
 
 	return ret;
 }

msm/sde/sde_fence.h

@@ -175,10 +175,11 @@ int sde_fence_register_hw_fences_wait(struct sde_hw_ctl *hw_ctl, struct dma_fenc
  *
  * @ctx: sde fence context
  * @vid_mode: is video-mode update
+ * @line_count: prog line count value, must be non-zero
  *
  * Returns: Zero on success, otherwise returns an error code.
  */
-int sde_fence_update_hw_fences_txq(struct sde_fence_context *ctx, bool vid_mode);
+int sde_fence_update_hw_fences_txq(struct sde_fence_context *ctx, bool vid_mode, u32 line_count);
 
 /**
  * sde_fence_update_input_hw_fence_signal - updates input-fence ipcc signal in dpu and enables