Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2016 Red Hat * Author: Rob Clark <robdclark@gmail.com> */ #include "mdp5_kms.h" int mdp5_pipe_assign(struct drm_atomic_state *s, struct drm_plane *plane, uint32_t caps, uint32_t blkcfg, struct mdp5_hw_pipe **hwpipe, struct mdp5_hw_pipe **r_hwpipe) { struct msm_drm_private *priv = s->dev->dev_private; struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(priv->kms)); struct mdp5_global_state *new_global_state, *old_global_state; struct mdp5_hw_pipe_state *old_state, *new_state; int i, j; new_global_state = mdp5_get_global_state(s); if (IS_ERR(new_global_state)) return PTR_ERR(new_global_state); /* grab old_state after mdp5_get_global_state(), since now we hold lock: */ old_global_state = mdp5_get_existing_global_state(mdp5_kms); old_state = &old_global_state->hwpipe; new_state = &new_global_state->hwpipe; for (i = 0; i < mdp5_kms->num_hwpipes; i++) { struct mdp5_hw_pipe *cur = mdp5_kms->hwpipes[i]; /* skip if already in-use.. check both new and old state, * since we cannot immediately re-use a pipe that is * released in the current update in some cases: * (1) mdp5 can have SMP (non-double-buffered) * (2) hw pipe previously assigned to different CRTC * (vblanks might not be aligned) */ if (new_state->hwpipe_to_plane[cur->idx] || old_state->hwpipe_to_plane[cur->idx]) continue; /* skip if doesn't support some required caps: */ if (caps & ~cur->caps) continue; /* * don't assign a cursor pipe to a plane that isn't going to * be used as a cursor */ if (cur->caps & MDP_PIPE_CAP_CURSOR && plane->type != DRM_PLANE_TYPE_CURSOR) continue; /* possible candidate, take the one with the * fewest unneeded caps bits set: */ if (!(*hwpipe) || (hweight_long(cur->caps & ~caps) < hweight_long((*hwpipe)->caps & ~caps))) { bool r_found = false; if (r_hwpipe) { for (j = i + 1; j < mdp5_kms->num_hwpipes; j++) { struct mdp5_hw_pipe *r_cur = mdp5_kms->hwpipes[j]; /* reject different types of hwpipes */ if (r_cur->caps != cur->caps) continue; /* respect priority, eg. VIG0 > VIG1 */ if (cur->pipe > r_cur->pipe) continue; *r_hwpipe = r_cur; r_found = true; break; } } if (!r_hwpipe || r_found) *hwpipe = cur; } } if (!(*hwpipe)) return -ENOMEM; if (r_hwpipe && !(*r_hwpipe)) return -ENOMEM; if (mdp5_kms->smp) { int ret; /* We don't support SMP and 2 hwpipes/plane together */ WARN_ON(r_hwpipe); DBG("%s: alloc SMP blocks", (*hwpipe)->name); ret = mdp5_smp_assign(mdp5_kms->smp, &new_global_state->smp, (*hwpipe)->pipe, blkcfg); if (ret) return -ENOMEM; (*hwpipe)->blkcfg = blkcfg; } DBG("%s: assign to plane %s for caps %x", (*hwpipe)->name, plane->name, caps); new_state->hwpipe_to_plane[(*hwpipe)->idx] = plane; if (r_hwpipe) { DBG("%s: assign to right of plane %s for caps %x", (*r_hwpipe)->name, plane->name, caps); new_state->hwpipe_to_plane[(*r_hwpipe)->idx] = plane; } return 0; } int mdp5_pipe_release(struct drm_atomic_state *s, struct mdp5_hw_pipe *hwpipe) { struct msm_drm_private *priv = s->dev->dev_private; struct mdp5_kms *mdp5_kms = to_mdp5_kms(to_mdp_kms(priv->kms)); struct mdp5_global_state *state; struct mdp5_hw_pipe_state *new_state; if (!hwpipe) return 0; state = mdp5_get_global_state(s); if (IS_ERR(state)) return PTR_ERR(state); new_state = &state->hwpipe; if (WARN_ON(!new_state->hwpipe_to_plane[hwpipe->idx])) return -EINVAL; DBG("%s: release from plane %s", hwpipe->name, new_state->hwpipe_to_plane[hwpipe->idx]->name); if (mdp5_kms->smp) { DBG("%s: free SMP blocks", hwpipe->name); mdp5_smp_release(mdp5_kms->smp, &state->smp, hwpipe->pipe); } new_state->hwpipe_to_plane[hwpipe->idx] = NULL; return 0; } struct mdp5_hw_pipe *mdp5_pipe_init(struct drm_device *dev, enum mdp5_pipe pipe, uint32_t reg_offset, uint32_t caps) { struct mdp5_hw_pipe *hwpipe; hwpipe = devm_kzalloc(dev->dev, sizeof(*hwpipe), GFP_KERNEL); if (!hwpipe) return ERR_PTR(-ENOMEM); hwpipe->name = pipe2name(pipe); hwpipe->pipe = pipe; hwpipe->reg_offset = reg_offset; hwpipe->caps = caps; hwpipe->flush_mask = mdp_ctl_flush_mask_pipe(pipe); return hwpipe; } |