On 2/9/2022 9:25 AM, Dmitry Baryshkov wrote:
In preparation to adding fully virtualized planes, move struct
dpu_hw_pipe instance from struct dpu_plane to struct dpu_plane_state, as
it will become a part of state (allocated during atomic check) rather
than part of a plane (allocated during boot).

Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c | 104 ++++++++++++----------
  drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h |   2 +
  2 files changed, 58 insertions(+), 48 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
index 37742f74a7bf..0247ff8a67a2 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.c
@@ -100,7 +100,6 @@ struct dpu_plane {
enum dpu_sspp pipe; - struct dpu_hw_pipe *pipe_hw;
        uint32_t color_fill;
        bool is_error;
        bool is_rt_pipe;
@@ -300,6 +299,7 @@ static void _dpu_plane_set_qos_lut(struct drm_plane *plane,
                struct drm_framebuffer *fb, struct dpu_hw_pipe_cfg *pipe_cfg)
  {
        struct dpu_plane *pdpu = to_dpu_plane(plane);
+       struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state);
        const struct dpu_format *fmt = NULL;
        u64 qos_lut;
        u32 total_fl = 0, lut_usage;
@@ -331,7 +331,7 @@ static void _dpu_plane_set_qos_lut(struct drm_plane *plane,
                        fmt ? (char *)&fmt->base.pixel_format : NULL,
                        pdpu->is_rt_pipe, total_fl, qos_lut);
- pdpu->pipe_hw->ops.setup_creq_lut(pdpu->pipe_hw, qos_lut);
+       pstate->pipe_hw->ops.setup_creq_lut(pstate->pipe_hw, qos_lut);
  }
/**
@@ -343,6 +343,7 @@ static void _dpu_plane_set_danger_lut(struct drm_plane 
*plane,
                struct drm_framebuffer *fb)
  {
        struct dpu_plane *pdpu = to_dpu_plane(plane);
+       struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state);
        const struct dpu_format *fmt = NULL;
        u32 danger_lut, safe_lut;
@@ -382,7 +383,7 @@ static void _dpu_plane_set_danger_lut(struct drm_plane *plane,
                danger_lut,
                safe_lut);
- pdpu->pipe_hw->ops.setup_danger_safe_lut(pdpu->pipe_hw,
+       pstate->pipe_hw->ops.setup_danger_safe_lut(pstate->pipe_hw,
                        danger_lut, safe_lut);
  }
@@ -396,14 +397,15 @@ static void _dpu_plane_set_qos_ctrl(struct drm_plane *plane,
        bool enable, u32 flags)
  {
        struct dpu_plane *pdpu = to_dpu_plane(plane);
+       struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state);
        struct dpu_hw_pipe_qos_cfg pipe_qos_cfg;
memset(&pipe_qos_cfg, 0, sizeof(pipe_qos_cfg)); if (flags & DPU_PLANE_QOS_VBLANK_CTRL) {
-               pipe_qos_cfg.creq_vblank = 
pdpu->pipe_hw->cap->sblk->creq_vblank;
+               pipe_qos_cfg.creq_vblank = 
pstate->pipe_hw->cap->sblk->creq_vblank;
                pipe_qos_cfg.danger_vblank =
-                               pdpu->pipe_hw->cap->sblk->danger_vblank;
+                               pstate->pipe_hw->cap->sblk->danger_vblank;
                pipe_qos_cfg.vblank_en = enable;
        }
@@ -429,7 +431,7 @@ static void _dpu_plane_set_qos_ctrl(struct drm_plane *plane,
                pipe_qos_cfg.danger_vblank,
                pdpu->is_rt_pipe);
- pdpu->pipe_hw->ops.setup_qos_ctrl(pdpu->pipe_hw,
+       pstate->pipe_hw->ops.setup_qos_ctrl(pstate->pipe_hw,
                        &pipe_qos_cfg);
  }
@@ -443,18 +445,19 @@ static void _dpu_plane_set_ot_limit(struct drm_plane *plane,
                struct drm_crtc *crtc, struct dpu_hw_pipe_cfg *pipe_cfg)
  {
        struct dpu_plane *pdpu = to_dpu_plane(plane);
+       struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state);
        struct dpu_vbif_set_ot_params ot_params;
        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;
-       ot_params.num = pdpu->pipe_hw->idx - SSPP_NONE;
+       ot_params.xin_id = pstate->pipe_hw->cap->xin_id;
+       ot_params.num = pstate->pipe_hw->idx - SSPP_NONE;
        ot_params.width = drm_rect_width(&pipe_cfg->src_rect);
        ot_params.height = drm_rect_height(&pipe_cfg->src_rect);
        ot_params.is_wfd = !pdpu->is_rt_pipe;
        ot_params.frame_rate = drm_mode_vrefresh(&crtc->mode);
        ot_params.vbif_idx = VBIF_RT;
-       ot_params.clk_ctrl = pdpu->pipe_hw->cap->clk_ctrl;
+       ot_params.clk_ctrl = pstate->pipe_hw->cap->clk_ctrl;
        ot_params.rd = true;
dpu_vbif_set_ot_limit(dpu_kms, &ot_params);
@@ -467,14 +470,15 @@ 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 = to_dpu_plane(plane);
+       struct dpu_plane_state *pstate = to_dpu_plane_state(plane->state);
        struct dpu_vbif_set_qos_params qos_params;
        struct dpu_kms *dpu_kms = _dpu_plane_get_kms(plane);
memset(&qos_params, 0, sizeof(qos_params));
        qos_params.vbif_idx = VBIF_RT;
-       qos_params.clk_ctrl = pdpu->pipe_hw->cap->clk_ctrl;
-       qos_params.xin_id = pdpu->pipe_hw->cap->xin_id;
-       qos_params.num = pdpu->pipe_hw->idx - SSPP_VIG0;
+       qos_params.clk_ctrl = pstate->pipe_hw->cap->clk_ctrl;
+       qos_params.xin_id = pstate->pipe_hw->cap->xin_id;
+       qos_params.num = pstate->pipe_hw->idx - SSPP_VIG0;
        qos_params.is_rt = pdpu->is_rt_pipe;
DPU_DEBUG_PLANE(pdpu, "pipe:%d vbif:%d xin:%d rt:%d, clk_ctrl:%d\n",
@@ -501,11 +505,11 @@ static void _dpu_plane_set_scanout(struct drm_plane 
*plane,
                DPU_DEBUG_PLANE(pdpu, "not updating same src addrs\n");
        else if (ret)
                DPU_ERROR_PLANE(pdpu, "failed to get format layout, %d\n", ret);
-       else if (pdpu->pipe_hw->ops.setup_sourceaddress) {
-               trace_dpu_plane_set_scanout(pdpu->pipe_hw->idx,
+       else if (pstate->pipe_hw->ops.setup_sourceaddress) {
+               trace_dpu_plane_set_scanout(pstate->pipe_hw->idx,
                                            &pipe_cfg->layout,
                                            pstate->multirect_index);
-               pdpu->pipe_hw->ops.setup_sourceaddress(pdpu->pipe_hw, pipe_cfg,
+               pstate->pipe_hw->ops.setup_sourceaddress(pstate->pipe_hw, 
pipe_cfg,
                                                pstate->multirect_index);
        }
  }
@@ -549,7 +553,7 @@ static void _dpu_plane_setup_scaler3(struct dpu_plane *pdpu,
                        scale_cfg->src_height[i] /= chroma_subsmpl_v;
                }
- if (pdpu->pipe_hw->cap->features &
+               if (pstate->pipe_hw->cap->features &
                        BIT(DPU_SSPP_SCALER_QSEED4)) {
                        scale_cfg->preload_x[i] = DPU_QSEED4_DEFAULT_PRELOAD_H;
                        scale_cfg->preload_y[i] = DPU_QSEED4_DEFAULT_PRELOAD_V;
@@ -609,6 +613,7 @@ static const struct dpu_csc_cfg dpu_csc10_YUV2RGB_601L = {
static const struct dpu_csc_cfg *_dpu_plane_get_csc(struct dpu_plane *pdpu, const struct dpu_format *fmt)
  {
+       struct dpu_plane_state *pstate = to_dpu_plane_state(pdpu->base.state);
        const struct dpu_csc_cfg *csc_ptr;
if (!pdpu) {
@@ -619,7 +624,7 @@ static const struct dpu_csc_cfg *_dpu_plane_get_csc(struct 
dpu_plane *pdpu, cons
        if (!DPU_FORMAT_IS_YUV(fmt))
                return NULL;
- if (BIT(DPU_SSPP_CSC_10BIT) & pdpu->pipe_hw->cap->features)
+       if (BIT(DPU_SSPP_CSC_10BIT) & pstate->pipe_hw->cap->features)
                csc_ptr = &dpu_csc10_YUV2RGB_601L;
        else
                csc_ptr = &dpu_csc_YUV2RGB_601L;
@@ -654,8 +659,8 @@ static void _dpu_plane_setup_scaler(struct dpu_plane *pdpu,
                        &scaler3_cfg, &pixel_ext, fmt,
                        info->hsub, info->vsub);
- if (pdpu->pipe_hw->ops.setup_pe)
-               pdpu->pipe_hw->ops.setup_pe(pdpu->pipe_hw,
+       if (pstate->pipe_hw->ops.setup_pe)
+               pstate->pipe_hw->ops.setup_pe(pstate->pipe_hw,
                                &pixel_ext);
/**
@@ -663,9 +668,9 @@ static void _dpu_plane_setup_scaler(struct dpu_plane *pdpu,
         * bypassed. Still we need to update alpha and bitwidth
         * ONLY for RECT0
         */
-       if (pdpu->pipe_hw->ops.setup_scaler &&
+       if (pstate->pipe_hw->ops.setup_scaler &&
                        pstate->multirect_index != DPU_SSPP_RECT_1)
-               pdpu->pipe_hw->ops.setup_scaler(pdpu->pipe_hw,
+               pstate->pipe_hw->ops.setup_scaler(pstate->pipe_hw,
                                pipe_cfg,
                                &scaler3_cfg);
  }
@@ -694,8 +699,8 @@ static int _dpu_plane_color_fill(struct dpu_plane *pdpu,
        fmt = dpu_get_dpu_format(DRM_FORMAT_ABGR8888);
/* update sspp */
-       if (fmt && pdpu->pipe_hw->ops.setup_solidfill) {
-               pdpu->pipe_hw->ops.setup_solidfill(pdpu->pipe_hw,
+       if (fmt && pstate->pipe_hw->ops.setup_solidfill) {
+               pstate->pipe_hw->ops.setup_solidfill(pstate->pipe_hw,
                                (color & 0xFFFFFF) | ((alpha & 0xFF) << 24),
                                pstate->multirect_index);
@@ -709,13 +714,13 @@ static int _dpu_plane_color_fill(struct dpu_plane *pdpu,
                pipe_cfg.src_rect.y2 =
                        drm_rect_height(&pipe_cfg.dst_rect);
- if (pdpu->pipe_hw->ops.setup_format)
-                       pdpu->pipe_hw->ops.setup_format(pdpu->pipe_hw,
+               if (pstate->pipe_hw->ops.setup_format)
+                       pstate->pipe_hw->ops.setup_format(pstate->pipe_hw,
                                        fmt, DPU_SSPP_SOLID_FILL,
                                        pstate->multirect_index);
- if (pdpu->pipe_hw->ops.setup_rects)
-                       pdpu->pipe_hw->ops.setup_rects(pdpu->pipe_hw,
+               if (pstate->pipe_hw->ops.setup_rects)
+                       pstate->pipe_hw->ops.setup_rects(pstate->pipe_hw,
                                        &pipe_cfg,
                                        pstate->multirect_index);
@@ -953,10 +958,10 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
                crtc_state = drm_atomic_get_new_crtc_state(state,
                                                           
new_plane_state->crtc);
- min_scale = FRAC_16_16(1, pdpu->pipe_hw->cap->sblk->maxupscale);
+       min_scale = FRAC_16_16(1, pstate->pipe_hw->cap->sblk->maxupscale);
        ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
                                                  min_scale,
-                                                 
pdpu->pipe_hw->cap->sblk->maxdwnscale << 16,
+                                                 
pstate->pipe_hw->cap->sblk->maxdwnscale << 16,
                                                  true, true);
        if (ret) {
                DPU_DEBUG_PLANE(pdpu, "Check plane state failed (%d)\n", ret);
@@ -982,8 +987,8 @@ static int dpu_plane_atomic_check(struct drm_plane *plane,
        min_src_size = DPU_FORMAT_IS_YUV(fmt) ? 2 : 1;
if (DPU_FORMAT_IS_YUV(fmt) &&
-               (!(pdpu->pipe_hw->cap->features & DPU_SSPP_SCALER) ||
-                !(pdpu->pipe_hw->cap->features & DPU_SSPP_CSC_ANY))) {
+               (!(pstate->pipe_hw->cap->features & DPU_SSPP_SCALER) ||
+                !(pstate->pipe_hw->cap->features & DPU_SSPP_CSC_ANY))) {
                DPU_DEBUG_PLANE(pdpu,
                                "plane doesn't have scaler/csc for yuv\n");
                return -EINVAL;
@@ -1044,12 +1049,12 @@ void dpu_plane_flush(struct drm_plane *plane)
        else if (pdpu->color_fill & DPU_PLANE_COLOR_FILL_FLAG)
                /* force 100% alpha */
                _dpu_plane_color_fill(pdpu, pdpu->color_fill, 0xFF);
-       else if (pdpu->pipe_hw && pdpu->pipe_hw->ops.setup_csc) {
+       else if (pstate->pipe_hw && pstate->pipe_hw->ops.setup_csc) {
                const struct dpu_format *fmt = 
to_dpu_format(msm_framebuffer_format(plane->state->fb));
                const struct dpu_csc_cfg *csc_ptr = _dpu_plane_get_csc(pdpu, 
fmt);
if (csc_ptr)
-                       pdpu->pipe_hw->ops.setup_csc(pdpu->pipe_hw, csc_ptr);
+                       pstate->pipe_hw->ops.setup_csc(pstate->pipe_hw, 
csc_ptr);
        }
/* flag h/w flush complete */
@@ -1116,21 +1121,21 @@ static void dpu_plane_sspp_atomic_update(struct 
drm_plane *plane)
                return;
        }
- if (pdpu->pipe_hw->ops.setup_rects) {
-               pdpu->pipe_hw->ops.setup_rects(pdpu->pipe_hw,
+       if (pstate->pipe_hw->ops.setup_rects) {
+               pstate->pipe_hw->ops.setup_rects(pstate->pipe_hw,
                                &pipe_cfg,
                                pstate->multirect_index);
        }
_dpu_plane_setup_scaler(pdpu, pstate, fmt, false, &pipe_cfg); - if (pdpu->pipe_hw->ops.setup_multirect)
-               pdpu->pipe_hw->ops.setup_multirect(
-                               pdpu->pipe_hw,
+       if (pstate->pipe_hw->ops.setup_multirect)
+               pstate->pipe_hw->ops.setup_multirect(
+                               pstate->pipe_hw,
                                pstate->multirect_index,
                                pstate->multirect_mode);
- if (pdpu->pipe_hw->ops.setup_format) {
+       if (pstate->pipe_hw->ops.setup_format) {
                unsigned int rotation;
src_flags = 0x0;
@@ -1147,10 +1152,10 @@ static void dpu_plane_sspp_atomic_update(struct 
drm_plane *plane)
                        src_flags |= DPU_SSPP_FLIP_UD;
/* update format */
-               pdpu->pipe_hw->ops.setup_format(pdpu->pipe_hw, fmt, src_flags,
+               pstate->pipe_hw->ops.setup_format(pstate->pipe_hw, fmt, 
src_flags,
                                pstate->multirect_index);
- if (pdpu->pipe_hw->ops.setup_cdp) {
+               if (pstate->pipe_hw->ops.setup_cdp) {
                        struct dpu_hw_pipe_cdp_cfg cdp_cfg;
memset(&cdp_cfg, 0, sizeof(struct dpu_hw_pipe_cdp_cfg));
@@ -1164,7 +1169,7 @@ static void dpu_plane_sspp_atomic_update(struct drm_plane 
*plane)
                                        DPU_FORMAT_IS_TILE(fmt);
                        cdp_cfg.preload_ahead = DPU_SSPP_CDP_PRELOAD_AHEAD_64;
- pdpu->pipe_hw->ops.setup_cdp(pdpu->pipe_hw, &cdp_cfg, pstate->multirect_index);
+                       pstate->pipe_hw->ops.setup_cdp(pstate->pipe_hw, &cdp_cfg, 
pstate->multirect_index);
                }
        }
@@ -1310,10 +1315,9 @@ static void dpu_plane_atomic_print_state(struct drm_printer *p,
                const struct drm_plane_state *state)
  {
        const struct dpu_plane_state *pstate = to_dpu_plane_state(state);
-       const struct dpu_plane *pdpu = to_dpu_plane(state->plane);
drm_printf(p, "\tstage=%d\n", pstate->stage);
-       drm_printf(p, "\tsspp=%s\n", pdpu->pipe_hw->cap->name);
+       drm_printf(p, "\tsspp=%s\n", pstate->pipe_hw->cap->name);
        drm_printf(p, "\tmultirect_mode=%s\n", 
dpu_get_multirect_mode(pstate->multirect_mode));
        drm_printf(p, "\tmultirect_index=%s\n", 
dpu_get_multirect_index(pstate->multirect_index));
  }
@@ -1322,6 +1326,7 @@ static void dpu_plane_reset(struct drm_plane *plane)
  {
        struct dpu_plane *pdpu;
        struct dpu_plane_state *pstate;
+       struct dpu_kms *kms = _dpu_plane_get_kms(plane);
if (!plane) {
                DPU_ERROR("invalid plane\n");
@@ -1343,6 +1348,8 @@ static void dpu_plane_reset(struct drm_plane *plane)
                return;
        }
+ pstate->pipe_hw = to_dpu_hw_pipe(kms->rm.sspp_blks[pdpu->pipe - SSPP_NONE]);
+
        __drm_atomic_helper_plane_reset(plane, &pstate->base);
  }
@@ -1411,6 +1418,7 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev,
        struct dpu_plane *pdpu;
        struct msm_drm_private *priv = dev->dev_private;
        struct dpu_kms *kms = to_dpu_kms(priv->kms);
+       struct dpu_hw_pipe *pipe_hw;
        uint32_t num_formats;
        int ret = -EINVAL;
@@ -1429,15 +1437,15 @@ struct drm_plane *dpu_plane_init(struct drm_device *dev,
        /* initialize underlying h/w driver */
        if (!kms->rm.sspp_blks[pipe - SSPP_NONE])
                goto clean_plane;
-       pdpu->pipe_hw = to_dpu_hw_pipe(kms->rm.sspp_blks[pipe - SSPP_NONE]);
+       pipe_hw = to_dpu_hw_pipe(kms->rm.sspp_blks[pipe - SSPP_NONE]);
- if (!pdpu->pipe_hw->cap || !pdpu->pipe_hw->cap->sblk) {
+       if (!pipe_hw->cap || !pipe_hw->cap->sblk) {
                DPU_ERROR("[%u]SSPP init returned invalid cfg\n", pipe);
                goto clean_plane;
        }
- format_list = pdpu->pipe_hw->cap->sblk->format_list;
-       num_formats = pdpu->pipe_hw->cap->sblk->num_formats;
+       format_list = pipe_hw->cap->sblk->format_list;
+       num_formats = pipe_hw->cap->sblk->num_formats;
ret = drm_universal_plane_init(dev, plane, 0xff, &dpu_plane_funcs,
                                format_list, num_formats,
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
index d2f60810434e..42b88b6bc9c2 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_plane.h
@@ -35,6 +35,8 @@ struct dpu_plane_state {
        uint32_t multirect_mode;
        bool pending;
+ struct dpu_hw_pipe *pipe_hw;

now that pipe_hw has been made part of the dpu_plane_state, it means
that it can also change with atomic state.

In this change, I can see you update this only in dpu_plane_reset() which will be invoked during the drm_mode_config_reset().

Should this pipe_hw assignment be moved to the dpu_plane_atomic_update() function?

+
        u64 plane_fetch_bw;
        u64 plane_clk;
  };

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