drm/i915/dsc: drop redundant = 0 assignments

Directly assign the values instead of first assigning 0 and then |= the
values.

Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/d752a148cc84558b76c8c3dacd9c0b2e0a4efd91.1693933849.git.jani.nikula@intel.com

drivers/gpu/drm/i915/display/intel_vdsc.c

@@ -415,7 +415,7 @@ static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state)
 	const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
 	enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
 	enum pipe pipe = crtc->pipe;
-	u32 pps_val = 0;
+	u32 pps_val;
 	u32 rc_buf_thresh_dword[4];
 	u32 rc_range_params_dword[8];
 	int i = 0;
@@ -446,42 +446,36 @@ static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state)
 	intel_dsc_pps_write(crtc_state, 0, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_1 registers */
-	pps_val = 0;
-	pps_val |= DSC_BPP(vdsc_cfg->bits_per_pixel);
+	pps_val = DSC_BPP(vdsc_cfg->bits_per_pixel);
 	drm_dbg_kms(&dev_priv->drm, "PPS1 = 0x%08x\n", pps_val);
 	intel_dsc_pps_write(crtc_state, 1, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_2 registers */
-	pps_val = 0;
-	pps_val |= DSC_PIC_HEIGHT(vdsc_cfg->pic_height) |
+	pps_val = DSC_PIC_HEIGHT(vdsc_cfg->pic_height) |
 		DSC_PIC_WIDTH(vdsc_cfg->pic_width / num_vdsc_instances);
 	drm_dbg_kms(&dev_priv->drm, "PPS2 = 0x%08x\n", pps_val);
 	intel_dsc_pps_write(crtc_state, 2, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_3 registers */
-	pps_val = 0;
-	pps_val |= DSC_SLICE_HEIGHT(vdsc_cfg->slice_height) |
+	pps_val = DSC_SLICE_HEIGHT(vdsc_cfg->slice_height) |
 		DSC_SLICE_WIDTH(vdsc_cfg->slice_width);
 	drm_dbg_kms(&dev_priv->drm, "PPS3 = 0x%08x\n", pps_val);
 	intel_dsc_pps_write(crtc_state, 3, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_4 registers */
-	pps_val = 0;
-	pps_val |= DSC_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) |
+	pps_val = DSC_INITIAL_XMIT_DELAY(vdsc_cfg->initial_xmit_delay) |
 		DSC_INITIAL_DEC_DELAY(vdsc_cfg->initial_dec_delay);
 	drm_dbg_kms(&dev_priv->drm, "PPS4 = 0x%08x\n", pps_val);
 	intel_dsc_pps_write(crtc_state, 4, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_5 registers */
-	pps_val = 0;
-	pps_val |= DSC_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) |
+	pps_val = DSC_SCALE_INC_INT(vdsc_cfg->scale_increment_interval) |
 		DSC_SCALE_DEC_INT(vdsc_cfg->scale_decrement_interval);
 	drm_dbg_kms(&dev_priv->drm, "PPS5 = 0x%08x\n", pps_val);
 	intel_dsc_pps_write(crtc_state, 5, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_6 registers */
-	pps_val = 0;
-	pps_val |= DSC_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) |
+	pps_val = DSC_INITIAL_SCALE_VALUE(vdsc_cfg->initial_scale_value) |
 		DSC_FIRST_LINE_BPG_OFFSET(vdsc_cfg->first_line_bpg_offset) |
 		DSC_FLATNESS_MIN_QP(vdsc_cfg->flatness_min_qp) |
 		DSC_FLATNESS_MAX_QP(vdsc_cfg->flatness_max_qp);
@@ -489,29 +483,25 @@ static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state)
 	intel_dsc_pps_write(crtc_state, 6, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_7 registers */
-	pps_val = 0;
-	pps_val |= DSC_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) |
+	pps_val = DSC_SLICE_BPG_OFFSET(vdsc_cfg->slice_bpg_offset) |
 		DSC_NFL_BPG_OFFSET(vdsc_cfg->nfl_bpg_offset);
 	drm_dbg_kms(&dev_priv->drm, "PPS7 = 0x%08x\n", pps_val);
 	intel_dsc_pps_write(crtc_state, 7, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_8 registers */
-	pps_val = 0;
-	pps_val |= DSC_FINAL_OFFSET(vdsc_cfg->final_offset) |
+	pps_val = DSC_FINAL_OFFSET(vdsc_cfg->final_offset) |
 		DSC_INITIAL_OFFSET(vdsc_cfg->initial_offset);
 	drm_dbg_kms(&dev_priv->drm, "PPS8 = 0x%08x\n", pps_val);
 	intel_dsc_pps_write(crtc_state, 8, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_9 registers */
-	pps_val = 0;
-	pps_val |= DSC_RC_MODEL_SIZE(vdsc_cfg->rc_model_size) |
+	pps_val = DSC_RC_MODEL_SIZE(vdsc_cfg->rc_model_size) |
 		DSC_RC_EDGE_FACTOR(DSC_RC_EDGE_FACTOR_CONST);
 	drm_dbg_kms(&dev_priv->drm, "PPS9 = 0x%08x\n", pps_val);
 	intel_dsc_pps_write(crtc_state, 9, pps_val);
 
 	/* Populate PICTURE_PARAMETER_SET_10 registers */
-	pps_val = 0;
-	pps_val |= DSC_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) |
+	pps_val = DSC_RC_QUANT_INC_LIMIT0(vdsc_cfg->rc_quant_incr_limit0) |
 		DSC_RC_QUANT_INC_LIMIT1(vdsc_cfg->rc_quant_incr_limit1) |
 		DSC_RC_TARGET_OFF_HIGH(DSC_RC_TGT_OFFSET_HI_CONST) |
 		DSC_RC_TARGET_OFF_LOW(DSC_RC_TGT_OFFSET_LO_CONST);
@@ -519,8 +509,7 @@ static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state)
 	intel_dsc_pps_write(crtc_state, 10, pps_val);
 
 	/* Populate Picture parameter set 16 */
-	pps_val = 0;
-	pps_val |= DSC_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) |
+	pps_val = DSC_SLICE_CHUNK_SIZE(vdsc_cfg->slice_chunk_size) |
 		DSC_SLICE_PER_LINE((vdsc_cfg->pic_width / num_vdsc_instances) /
 				   vdsc_cfg->slice_width) |
 		DSC_SLICE_ROW_PER_FRAME(vdsc_cfg->pic_height /
@@ -530,15 +519,13 @@ static void intel_dsc_pps_configure(const struct intel_crtc_state *crtc_state)
 
 	if (DISPLAY_VER(dev_priv) >= 14) {
 		/* Populate PICTURE_PARAMETER_SET_17 registers */
-		pps_val = 0;
-		pps_val |= DSC_SL_BPG_OFFSET(vdsc_cfg->second_line_bpg_offset);
+		pps_val = DSC_SL_BPG_OFFSET(vdsc_cfg->second_line_bpg_offset);
 		drm_dbg_kms(&dev_priv->drm, "PPS17 = 0x%08x\n", pps_val);
 		intel_dsc_pps_write(crtc_state, 17, pps_val);
 
 		/* Populate PICTURE_PARAMETER_SET_18 registers */
-		pps_val = 0;
-		pps_val |= DSC_NSL_BPG_OFFSET(vdsc_cfg->nsl_bpg_offset) |
-			   DSC_SL_OFFSET_ADJ(vdsc_cfg->second_line_offset_adj);
+		pps_val = DSC_NSL_BPG_OFFSET(vdsc_cfg->nsl_bpg_offset) |
+			DSC_SL_OFFSET_ADJ(vdsc_cfg->second_line_offset_adj);
 		drm_dbg_kms(&dev_priv->drm, "PPS18 = 0x%08x\n", pps_val);
 		intel_dsc_pps_write(crtc_state, 18, pps_val);
 	}