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Message-ID: <4c7spborzltmvjlbd2o4uwknraitjtf34mqt7r3x2ospnaidyn@abvn5zdumvwt>
Date: Wed, 25 Sep 2024 02:16:16 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Jessica Zhang <quic_jesszhan@...cinc.com>
Cc: Rob Clark <robdclark@...il.com>, quic_abhinavk@...cinc.com,
Sean Paul <sean@...rly.run>, Marijn Suijten <marijn.suijten@...ainline.org>,
David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>, quic_ebharadw@...cinc.com, linux-arm-msm@...r.kernel.org,
dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
Rob Clark <robdclark@...omium.org>, Ville Syrjälä <ville.syrjala@...ux.intel.com>
Subject: Re: [PATCH v2 06/22] drm/msm/dpu: fill CRTC resources in dpu_crtc.c
On Tue, Sep 24, 2024 at 03:59:22PM GMT, Jessica Zhang wrote:
> From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
>
> Stop poking into CRTC state from dpu_encoder.c, fill CRTC HW resources
> from dpu_crtc_assign_resources().
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> [quic_abhinavk@...cinc.com: cleaned up formatting]
> Signed-off-by: Abhinav Kumar <quic_abhinavk@...cinc.com>
> [quic_jesszhan@...cinc.com: dropped clearing num_mixers in CRTC disable
> path]
Same comment as before: the code is still there.
> Signed-off-by: Jessica Zhang <quic_jesszhan@...cinc.com>
> ---
> drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c | 32 ++++++++++++++++++++++++++---
> drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 24 ++--------------------
> 2 files changed, 31 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> index b918c80d30b3..d53e986eee54 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_crtc.c
> @@ -1091,9 +1091,6 @@ static void dpu_crtc_disable(struct drm_crtc *crtc,
>
> dpu_core_perf_crtc_update(crtc, 0);
>
> - memset(cstate->mixers, 0, sizeof(cstate->mixers));
> - cstate->num_mixers = 0;
> -
> /* disable clk & bw control until clk & bw properties are set */
> cstate->bw_control = false;
> cstate->bw_split_vote = false;
> @@ -1164,6 +1161,7 @@ static bool dpu_crtc_needs_dirtyfb(struct drm_crtc_state *cstate)
> }
>
> #define MAX_HDISPLAY_SPLIT 1080
> +#define MAX_CHANNELS_PER_CRTC 2
>
> static struct msm_display_topology dpu_crtc_get_topology(
> struct drm_crtc *crtc,
> @@ -1208,9 +1206,14 @@ static struct msm_display_topology dpu_crtc_get_topology(
>
> static int dpu_crtc_assign_resources(struct drm_crtc *crtc, struct drm_crtc_state *crtc_state)
> {
> + struct dpu_hw_blk *hw_ctl[MAX_CHANNELS_PER_CRTC];
> + struct dpu_hw_blk *hw_lm[MAX_CHANNELS_PER_CRTC];
> + struct dpu_hw_blk *hw_dspp[MAX_CHANNELS_PER_CRTC];
> + int i, num_lm, num_ctl, num_dspp;
> struct dpu_kms *dpu_kms = _dpu_crtc_get_kms(crtc);
> struct dpu_global_state *global_state;
> struct msm_display_topology topology;
> + struct dpu_crtc_state *cstate;
> int ret;
>
> /*
> @@ -1232,6 +1235,29 @@ static int dpu_crtc_assign_resources(struct drm_crtc *crtc, struct drm_crtc_stat
> if (ret)
> return ret;
>
> + cstate = to_dpu_crtc_state(crtc_state);
> +
> + num_ctl = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
> + crtc, DPU_HW_BLK_CTL, hw_ctl,
> + ARRAY_SIZE(hw_ctl));
> + num_lm = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
> + crtc, DPU_HW_BLK_LM, hw_lm,
> + ARRAY_SIZE(hw_lm));
> + num_dspp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
> + crtc, DPU_HW_BLK_DSPP, hw_dspp,
> + ARRAY_SIZE(hw_dspp));
> +
> + for (i = 0; i < num_lm; i++) {
> + int ctl_idx = (i < num_ctl) ? i : (num_ctl-1);
> +
> + cstate->mixers[i].hw_lm = to_dpu_hw_mixer(hw_lm[i]);
> + cstate->mixers[i].lm_ctl = to_dpu_hw_ctl(hw_ctl[ctl_idx]);
> + if (i < num_dspp)
> + cstate->mixers[i].hw_dspp = to_dpu_hw_dspp(hw_dspp[i]);
> + }
> +
> + cstate->num_mixers = num_lm;
> +
> return 0;
> }
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> index ada9119326ca..36b677cf9c7a 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c
> @@ -1049,14 +1049,11 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
> struct dpu_encoder_virt *dpu_enc;
> struct msm_drm_private *priv;
> struct dpu_kms *dpu_kms;
> - struct dpu_crtc_state *cstate;
> struct dpu_global_state *global_state;
> struct dpu_hw_blk *hw_pp[MAX_CHANNELS_PER_ENC];
> struct dpu_hw_blk *hw_ctl[MAX_CHANNELS_PER_ENC];
> - struct dpu_hw_blk *hw_lm[MAX_CHANNELS_PER_ENC];
> - struct dpu_hw_blk *hw_dspp[MAX_CHANNELS_PER_ENC] = { NULL };
> struct dpu_hw_blk *hw_dsc[MAX_CHANNELS_PER_ENC];
> - int num_lm, num_ctl, num_pp, num_dsc;
> + int num_pp, num_dsc;
> unsigned int dsc_mask = 0;
> int i;
>
> @@ -1083,13 +1080,8 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
> num_pp = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
> drm_enc->crtc, DPU_HW_BLK_PINGPONG, hw_pp,
> ARRAY_SIZE(hw_pp));
> - num_ctl = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
> - drm_enc->crtc, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl));
> - num_lm = dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
> - drm_enc->crtc, DPU_HW_BLK_LM, hw_lm, ARRAY_SIZE(hw_lm));
> dpu_rm_get_assigned_resources(&dpu_kms->rm, global_state,
> - drm_enc->crtc, DPU_HW_BLK_DSPP, hw_dspp,
> - ARRAY_SIZE(hw_dspp));
> + drm_enc->crtc, DPU_HW_BLK_CTL, hw_ctl, ARRAY_SIZE(hw_ctl));
Please don't mix reindentation with the actual changes. It makes it
harder to read.
>
> for (i = 0; i < MAX_CHANNELS_PER_ENC; i++)
> dpu_enc->hw_pp[i] = i < num_pp ? to_dpu_hw_pingpong(hw_pp[i])
> @@ -1115,18 +1107,6 @@ static void dpu_encoder_virt_atomic_mode_set(struct drm_encoder *drm_enc,
> dpu_enc->cur_master->hw_cdm = hw_cdm ? to_dpu_hw_cdm(hw_cdm) : NULL;
> }
>
> - cstate = to_dpu_crtc_state(crtc_state);
> -
> - for (i = 0; i < num_lm; i++) {
> - int ctl_idx = (i < num_ctl) ? i : (num_ctl-1);
> -
> - cstate->mixers[i].hw_lm = to_dpu_hw_mixer(hw_lm[i]);
> - cstate->mixers[i].lm_ctl = to_dpu_hw_ctl(hw_ctl[ctl_idx]);
> - cstate->mixers[i].hw_dspp = to_dpu_hw_dspp(hw_dspp[i]);
> - }
> -
> - cstate->num_mixers = num_lm;
> -
> for (i = 0; i < dpu_enc->num_phys_encs; i++) {
> struct dpu_encoder_phys *phys = dpu_enc->phys_encs[i];
>
>
> --
> 2.34.1
>
--
With best wishes
Dmitry
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