diff options
Diffstat (limited to 'drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c')
| -rw-r--r-- | drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c index c6b69afcbac8..85275665558b 100644 --- a/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c +++ b/drivers/gpu/drm/msm/disp/mdp5/mdp5_plane.c @@ -154,6 +154,46 @@ static void mdp5_plane_cleanup_fb(struct drm_plane *plane, msm_framebuffer_cleanup(fb, kms->aspace); } +/* based on _dpu_plane_calc_bw */ +static void mdp5_plane_calc_bw(struct drm_plane_state *state, struct drm_crtc_state *crtc_state) +{ + struct drm_framebuffer *fb = state->fb; + struct mdp5_plane_state *pstate = to_mdp5_plane_state(state); + struct drm_display_mode *mode = &crtc_state->mode; + int bpp; + int src_width, src_height, dst_height, fps; + u64 plane_bw; + u32 hw_latency_lines; + u32 prefill_div; + u64 scale_factor; + int vbp, vpw, vfp; + + src_width = drm_rect_width(&state->src) >> 16; + src_height = drm_rect_height(&state->src) >> 16; + dst_height = drm_rect_height(&state->dst); + fps = drm_mode_vrefresh(mode); + vbp = mode->vtotal - mode->vsync_end; + vpw = mode->vsync_end - mode->vsync_start; + vfp = mode->vsync_start - mode->vdisplay; + scale_factor = src_height > dst_height ? + mult_frac(src_height, 1, dst_height) : 1; + + bpp = to_mdp_format(msm_framebuffer_format(fb))->cpp; + + plane_bw = src_width * mode->vtotal * fps * bpp * scale_factor; + + hw_latency_lines = 21; /* or 24? */ + prefill_div = hw_latency_lines; + if (vbp + vpw > hw_latency_lines) + prefill_div = vbp + vpw; +#if 0 + else if (vbp + vpw + vfp < hw_latency_lines) + prefill_div = vbp + vpw + vfp; +#endif + + pstate->plane_bw = max(plane_bw, mult_frac(plane_bw, hw_latency_lines, prefill_div)); +} + static int mdp5_plane_atomic_check_with_state(struct drm_crtc_state *crtc_state, struct drm_plane_state *state) { @@ -297,6 +337,8 @@ static int mdp5_plane_atomic_check_with_state(struct drm_crtc_state *crtc_state, mdp5_pipe_release(state->state, old_hwpipe); mdp5_pipe_release(state->state, old_right_hwpipe); } + + mdp5_plane_calc_bw(state, crtc_state); } else { mdp5_pipe_release(state->state, mdp5_state->hwpipe); mdp5_pipe_release(state->state, mdp5_state->r_hwpipe); |