From: Bruce Wang Date: Mon, 24 Sep 2018 16:22:22 +0000 (-0400) Subject: drm/msm/dpu: Remove unneeded checks in dpu_plane.c X-Git-Tag: v5.4-rc1~2273^2~11^2~28 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1bd5a13b7986da7273eb26f117760b8331265e3b;p=platform%2Fkernel%2Flinux-rpi.git drm/msm/dpu: Remove unneeded checks in dpu_plane.c Removes some checks from dpu_plane.c that will never result in an error. Subsequent variable assignments become part of the initialization wherever possible. Unused variables are removed. v3: removed additional impossible checks and called helper function _dpu_plane_get_kms() where possible. Reviewed-by: Sean Paul Reviewed-by: Jordan Crouse Signed-off-by: Bruce Wang Signed-off-by: Sean Paul Signed-off-by: Rob Clark --- diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c index c17ab05..6329ad2 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c @@ -125,13 +125,8 @@ struct dpu_plane { static struct dpu_kms *_dpu_plane_get_kms(struct drm_plane *plane) { - struct msm_drm_private *priv; + struct msm_drm_private *priv = plane->dev->dev_private; - if (!plane || !plane->dev) - return NULL; - priv = plane->dev->dev_private; - if (!priv) - return NULL; return to_dpu_kms(priv->kms); } @@ -150,7 +145,7 @@ static inline int _dpu_plane_calc_fill_level(struct drm_plane *plane, u32 fixed_buff_size; u32 total_fl; - if (!plane || !fmt || !plane->state || !src_width || !fmt->bpp) { + if (!fmt || !plane->state || !src_width || !fmt->bpp) { DPU_ERROR("invalid arguments\n"); return 0; } @@ -231,26 +226,11 @@ static u64 _dpu_plane_get_qos_lut(const struct dpu_qos_lut_tbl *tbl, static void _dpu_plane_set_qos_lut(struct drm_plane *plane, struct drm_framebuffer *fb) { - struct dpu_plane *pdpu; + struct dpu_plane *pdpu = to_dpu_plane(plane); const struct dpu_format *fmt = NULL; u64 qos_lut; u32 total_fl = 0, lut_usage; - if (!plane || !fb) { - DPU_ERROR("invalid arguments plane %d fb %d\n", - plane != 0, fb != 0); - return; - } - - pdpu = to_dpu_plane(plane); - - if (!pdpu->pipe_hw || !pdpu->pipe_sblk || !pdpu->catalog) { - DPU_ERROR("invalid arguments\n"); - return; - } else if (!pdpu->pipe_hw->ops.setup_creq_lut) { - return; - } - if (!pdpu->is_rt_pipe) { lut_usage = DPU_QOS_LUT_USAGE_NRT; } else { @@ -292,24 +272,10 @@ static void _dpu_plane_set_qos_lut(struct drm_plane *plane, static void _dpu_plane_set_danger_lut(struct drm_plane *plane, struct drm_framebuffer *fb) { - struct dpu_plane *pdpu; + struct dpu_plane *pdpu = to_dpu_plane(plane); const struct dpu_format *fmt = NULL; u32 danger_lut, safe_lut; - if (!plane || !fb) { - DPU_ERROR("invalid arguments\n"); - return; - } - - pdpu = to_dpu_plane(plane); - - if (!pdpu->pipe_hw || !pdpu->pipe_sblk || !pdpu->catalog) { - DPU_ERROR("invalid arguments\n"); - return; - } else if (!pdpu->pipe_hw->ops.setup_danger_safe_lut) { - return; - } - if (!pdpu->is_rt_pipe) { danger_lut = pdpu->catalog->perf.danger_lut_tbl [DPU_QOS_LUT_USAGE_NRT]; @@ -363,21 +329,7 @@ static void _dpu_plane_set_danger_lut(struct drm_plane *plane, static void _dpu_plane_set_qos_ctrl(struct drm_plane *plane, bool enable, u32 flags) { - struct dpu_plane *pdpu; - - if (!plane) { - DPU_ERROR("invalid arguments\n"); - return; - } - - pdpu = to_dpu_plane(plane); - - if (!pdpu->pipe_hw || !pdpu->pipe_sblk) { - DPU_ERROR("invalid arguments\n"); - return; - } else if (!pdpu->pipe_hw->ops.setup_qos_ctrl) { - return; - } + struct dpu_plane *pdpu = to_dpu_plane(plane); if (flags & DPU_PLANE_QOS_VBLANK_CTRL) { pdpu->pipe_qos_cfg.creq_vblank = pdpu->pipe_sblk->creq_vblank; @@ -452,29 +404,9 @@ end: static void _dpu_plane_set_ot_limit(struct drm_plane *plane, struct drm_crtc *crtc) { - struct dpu_plane *pdpu; + struct dpu_plane *pdpu = to_dpu_plane(plane); struct dpu_vbif_set_ot_params ot_params; - struct msm_drm_private *priv; - struct dpu_kms *dpu_kms; - - if (!plane || !plane->dev || !crtc) { - DPU_ERROR("invalid arguments plane %d crtc %d\n", - plane != 0, crtc != 0); - return; - } - - priv = plane->dev->dev_private; - if (!priv || !priv->kms) { - DPU_ERROR("invalid KMS reference\n"); - return; - } - - dpu_kms = to_dpu_kms(priv->kms); - pdpu = to_dpu_plane(plane); - if (!pdpu->pipe_hw) { - DPU_ERROR("invalid pipe reference\n"); - return; - } + struct dpu_kms *dpu_kms = _dpu_plane_get_kms(plane); memset(&ot_params, 0, sizeof(ot_params)); ot_params.xin_id = pdpu->pipe_hw->cap->xin_id; @@ -496,28 +428,9 @@ static void _dpu_plane_set_ot_limit(struct drm_plane *plane, */ static void _dpu_plane_set_qos_remap(struct drm_plane *plane) { - struct dpu_plane *pdpu; + struct dpu_plane *pdpu = to_dpu_plane(plane); struct dpu_vbif_set_qos_params qos_params; - struct msm_drm_private *priv; - struct dpu_kms *dpu_kms; - - if (!plane || !plane->dev) { - DPU_ERROR("invalid arguments\n"); - return; - } - - priv = plane->dev->dev_private; - if (!priv || !priv->kms) { - DPU_ERROR("invalid KMS reference\n"); - return; - } - - dpu_kms = to_dpu_kms(priv->kms); - pdpu = to_dpu_plane(plane); - if (!pdpu->pipe_hw) { - DPU_ERROR("invalid pipe reference\n"); - return; - } + struct dpu_kms *dpu_kms = _dpu_plane_get_kms(plane); memset(&qos_params, 0, sizeof(qos_params)); qos_params.vbif_idx = VBIF_RT; @@ -551,10 +464,6 @@ static int _dpu_plane_get_aspace( } kms = _dpu_plane_get_kms(&pdpu->base); - if (!kms) { - DPU_ERROR("invalid kms\n"); - return -EINVAL; - } *aspace = kms->base.aspace; @@ -566,23 +475,10 @@ static inline void _dpu_plane_set_scanout(struct drm_plane *plane, struct dpu_hw_pipe_cfg *pipe_cfg, struct drm_framebuffer *fb) { - struct dpu_plane *pdpu; + struct dpu_plane *pdpu = to_dpu_plane(plane); struct msm_gem_address_space *aspace = NULL; int ret; - if (!plane || !pstate || !pipe_cfg || !fb) { - DPU_ERROR( - "invalid arg(s), plane %d state %d cfg %d fb %d\n", - plane != 0, pstate != 0, pipe_cfg != 0, fb != 0); - return; - } - - pdpu = to_dpu_plane(plane); - if (!pdpu->pipe_hw) { - DPU_ERROR_PLANE(pdpu, "invalid pipe_hw\n"); - return; - } - ret = _dpu_plane_get_aspace(pdpu, pstate, &aspace); if (ret) { DPU_ERROR_PLANE(pdpu, "Failed to get aspace %d\n", ret); @@ -612,15 +508,6 @@ static void _dpu_plane_setup_scaler3(struct dpu_plane *pdpu, { uint32_t i; - if (!pdpu || !pstate || !scale_cfg || !fmt || !chroma_subsmpl_h || - !chroma_subsmpl_v) { - DPU_ERROR( - "pdpu %d pstate %d scale_cfg %d fmt %d smp_h %d smp_v %d\n", - !!pdpu, !!pstate, !!scale_cfg, !!fmt, chroma_subsmpl_h, - chroma_subsmpl_v); - return; - } - memset(scale_cfg, 0, sizeof(*scale_cfg)); memset(&pstate->pixel_ext, 0, sizeof(struct dpu_hw_pixel_ext)); @@ -724,17 +611,8 @@ static void _dpu_plane_setup_scaler(struct dpu_plane *pdpu, struct dpu_plane_state *pstate, const struct dpu_format *fmt, bool color_fill) { - struct dpu_hw_pixel_ext *pe; uint32_t chroma_subsmpl_h, chroma_subsmpl_v; - if (!pdpu || !fmt || !pstate) { - DPU_ERROR("invalid arg(s), plane %d fmt %d state %d\n", - pdpu != 0, fmt != 0, pstate != 0); - return; - } - - pe = &pstate->pixel_ext; - /* don't chroma subsample if decimating */ chroma_subsmpl_h = drm_format_horz_chroma_subsampling(fmt->base.pixel_format); @@ -762,21 +640,8 @@ static int _dpu_plane_color_fill(struct dpu_plane *pdpu, uint32_t color, uint32_t alpha) { const struct dpu_format *fmt; - const struct drm_plane *plane; - struct dpu_plane_state *pstate; - - if (!pdpu || !pdpu->base.state) { - DPU_ERROR("invalid plane\n"); - return -EINVAL; - } - - if (!pdpu->pipe_hw) { - DPU_ERROR_PLANE(pdpu, "invalid plane h/w pointer\n"); - return -EINVAL; - } - - plane = &pdpu->base; - pstate = to_dpu_plane_state(plane->state); + const struct drm_plane *plane = &pdpu->base; + struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state); DPU_DEBUG_PLANE(pdpu, "\n"); @@ -827,12 +692,7 @@ static int _dpu_plane_color_fill(struct dpu_plane *pdpu, void dpu_plane_clear_multirect(const struct drm_plane_state *drm_state) { - struct dpu_plane_state *pstate; - - if (!drm_state) - return; - - pstate = to_dpu_plane_state(drm_state); + struct dpu_plane_state *pstate = to_dpu_plane_state(drm_state); pstate->multirect_index = DPU_SSPP_RECT_SOLO; pstate->multirect_mode = DPU_SSPP_MULTIRECT_NONE; @@ -963,15 +823,6 @@ done: void dpu_plane_get_ctl_flush(struct drm_plane *plane, struct dpu_hw_ctl *ctl, u32 *flush_sspp) { - struct dpu_plane_state *pstate; - - if (!plane || !flush_sspp) { - DPU_ERROR("invalid parameters\n"); - return; - } - - pstate = to_dpu_plane_state(plane->state); - *flush_sspp = ctl->ops.get_bitmask_sspp(ctl, dpu_plane_pipe(plane)); } @@ -1391,8 +1242,7 @@ static void dpu_plane_destroy(struct drm_plane *plane) /* this will destroy the states as well */ drm_plane_cleanup(plane); - if (pdpu->pipe_hw) - dpu_hw_sspp_destroy(pdpu->pipe_hw); + dpu_hw_sspp_destroy(pdpu->pipe_hw); kfree(pdpu); } @@ -1739,33 +1589,11 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev, struct drm_plane *plane = NULL, *master_plane = NULL; const struct dpu_format_extended *format_list; struct dpu_plane *pdpu; - struct msm_drm_private *priv; - struct dpu_kms *kms; + struct msm_drm_private *priv = dev->dev_private; + struct dpu_kms *kms = to_dpu_kms(priv->kms); int zpos_max = DPU_ZPOS_MAX; int ret = -EINVAL; - if (!dev) { - DPU_ERROR("[%u]device is NULL\n", pipe); - goto exit; - } - - priv = dev->dev_private; - if (!priv) { - DPU_ERROR("[%u]private data is NULL\n", pipe); - goto exit; - } - - if (!priv->kms) { - DPU_ERROR("[%u]invalid KMS reference\n", pipe); - goto exit; - } - kms = to_dpu_kms(priv->kms); - - if (!kms->catalog) { - DPU_ERROR("[%u]invalid catalog reference\n", pipe); - goto exit; - } - /* create and zero local structure */ pdpu = kzalloc(sizeof(*pdpu), GFP_KERNEL); if (!pdpu) {