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6084 | serge | 1 | /* |
2 | * Copyright © 2014 Intel Corporation |
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3 | * |
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4 | * Permission is hereby granted, free of charge, to any person obtaining a |
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5 | * copy of this software and associated documentation files (the "Software"), |
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6 | * to deal in the Software without restriction, including without limitation |
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7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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8 | * and/or sell copies of the Software, and to permit persons to whom the |
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9 | * Software is furnished to do so, subject to the following conditions: |
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10 | * |
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11 | * The above copyright notice and this permission notice (including the next |
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12 | * paragraph) shall be included in all copies or substantial portions of the |
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13 | * Software. |
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14 | * |
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15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
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20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
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21 | * DEALINGS IN THE SOFTWARE. |
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22 | */ |
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23 | |||
24 | /** |
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25 | * DOC: atomic plane helpers |
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26 | * |
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27 | * The functions here are used by the atomic plane helper functions to |
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28 | * implement legacy plane updates (i.e., drm_plane->update_plane() and |
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29 | * drm_plane->disable_plane()). This allows plane updates to use the |
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30 | * atomic state infrastructure and perform plane updates as separate |
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31 | * prepare/check/commit/cleanup steps. |
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32 | */ |
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33 | |||
34 | #include |
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35 | #include |
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36 | #include |
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37 | #include "intel_drv.h" |
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38 | |||
39 | /** |
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40 | * intel_create_plane_state - create plane state object |
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41 | * @plane: drm plane |
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42 | * |
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43 | * Allocates a fresh plane state for the given plane and sets some of |
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44 | * the state values to sensible initial values. |
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45 | * |
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46 | * Returns: A newly allocated plane state, or NULL on failure |
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47 | */ |
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48 | struct intel_plane_state * |
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49 | intel_create_plane_state(struct drm_plane *plane) |
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50 | { |
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51 | struct intel_plane_state *state; |
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52 | |||
53 | state = kzalloc(sizeof(*state), GFP_KERNEL); |
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54 | if (!state) |
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55 | return NULL; |
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56 | |||
57 | state->base.plane = plane; |
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58 | state->base.rotation = BIT(DRM_ROTATE_0); |
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59 | state->ckey.flags = I915_SET_COLORKEY_NONE; |
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60 | |||
61 | return state; |
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62 | } |
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63 | |||
64 | /** |
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65 | * intel_plane_duplicate_state - duplicate plane state |
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66 | * @plane: drm plane |
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67 | * |
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68 | * Allocates and returns a copy of the plane state (both common and |
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69 | * Intel-specific) for the specified plane. |
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70 | * |
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71 | * Returns: The newly allocated plane state, or NULL on failure. |
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72 | */ |
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73 | struct drm_plane_state * |
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74 | intel_plane_duplicate_state(struct drm_plane *plane) |
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75 | { |
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76 | struct drm_plane_state *state; |
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77 | struct intel_plane_state *intel_state; |
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78 | |||
79 | intel_state = kmemdup(plane->state, sizeof(*intel_state), GFP_KERNEL); |
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80 | |||
81 | if (!intel_state) |
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82 | return NULL; |
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83 | |||
84 | state = &intel_state->base; |
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85 | |||
86 | __drm_atomic_helper_plane_duplicate_state(plane, state); |
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6937 | serge | 87 | intel_state->wait_req = NULL; |
6084 | serge | 88 | |
89 | return state; |
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90 | } |
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91 | |||
92 | /** |
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93 | * intel_plane_destroy_state - destroy plane state |
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94 | * @plane: drm plane |
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95 | * @state: state object to destroy |
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96 | * |
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97 | * Destroys the plane state (both common and Intel-specific) for the |
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98 | * specified plane. |
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99 | */ |
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100 | void |
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101 | intel_plane_destroy_state(struct drm_plane *plane, |
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102 | struct drm_plane_state *state) |
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103 | { |
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6937 | serge | 104 | WARN_ON(state && to_intel_plane_state(state)->wait_req); |
6084 | serge | 105 | drm_atomic_helper_plane_destroy_state(plane, state); |
106 | } |
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107 | |||
108 | static int intel_plane_atomic_check(struct drm_plane *plane, |
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109 | struct drm_plane_state *state) |
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110 | { |
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111 | struct drm_crtc *crtc = state->crtc; |
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112 | struct intel_crtc *intel_crtc; |
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113 | struct intel_crtc_state *crtc_state; |
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114 | struct intel_plane *intel_plane = to_intel_plane(plane); |
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115 | struct intel_plane_state *intel_state = to_intel_plane_state(state); |
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116 | struct drm_crtc_state *drm_crtc_state; |
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117 | int ret; |
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118 | |||
119 | crtc = crtc ? crtc : plane->state->crtc; |
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120 | intel_crtc = to_intel_crtc(crtc); |
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121 | |||
122 | /* |
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123 | * Both crtc and plane->crtc could be NULL if we're updating a |
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124 | * property while the plane is disabled. We don't actually have |
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125 | * anything driver-specific we need to test in that case, so |
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126 | * just return success. |
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127 | */ |
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128 | if (!crtc) |
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129 | return 0; |
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130 | |||
131 | drm_crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc); |
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132 | if (WARN_ON(!drm_crtc_state)) |
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133 | return -EINVAL; |
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134 | |||
135 | crtc_state = to_intel_crtc_state(drm_crtc_state); |
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136 | |||
137 | /* |
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138 | * The original src/dest coordinates are stored in state->base, but |
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139 | * we want to keep another copy internal to our driver that we can |
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140 | * clip/modify ourselves. |
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141 | */ |
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142 | intel_state->src.x1 = state->src_x; |
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143 | intel_state->src.y1 = state->src_y; |
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144 | intel_state->src.x2 = state->src_x + state->src_w; |
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145 | intel_state->src.y2 = state->src_y + state->src_h; |
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146 | intel_state->dst.x1 = state->crtc_x; |
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147 | intel_state->dst.y1 = state->crtc_y; |
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148 | intel_state->dst.x2 = state->crtc_x + state->crtc_w; |
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149 | intel_state->dst.y2 = state->crtc_y + state->crtc_h; |
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150 | |||
151 | /* Clip all planes to CRTC size, or 0x0 if CRTC is disabled */ |
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152 | intel_state->clip.x1 = 0; |
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153 | intel_state->clip.y1 = 0; |
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154 | intel_state->clip.x2 = |
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7144 | serge | 155 | crtc_state->base.enable ? crtc_state->pipe_src_w : 0; |
6084 | serge | 156 | intel_state->clip.y2 = |
7144 | serge | 157 | crtc_state->base.enable ? crtc_state->pipe_src_h : 0; |
6084 | serge | 158 | |
159 | if (state->fb && intel_rotation_90_or_270(state->rotation)) { |
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160 | if (!(state->fb->modifier[0] == I915_FORMAT_MOD_Y_TILED || |
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161 | state->fb->modifier[0] == I915_FORMAT_MOD_Yf_TILED)) { |
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162 | DRM_DEBUG_KMS("Y/Yf tiling required for 90/270!\n"); |
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163 | return -EINVAL; |
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164 | } |
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165 | |||
166 | /* |
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167 | * 90/270 is not allowed with RGB64 16:16:16:16, |
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168 | * RGB 16-bit 5:6:5, and Indexed 8-bit. |
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169 | * TBD: Add RGB64 case once its added in supported format list. |
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170 | */ |
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171 | switch (state->fb->pixel_format) { |
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172 | case DRM_FORMAT_C8: |
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173 | case DRM_FORMAT_RGB565: |
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174 | DRM_DEBUG_KMS("Unsupported pixel format %s for 90/270!\n", |
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175 | drm_get_format_name(state->fb->pixel_format)); |
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176 | return -EINVAL; |
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177 | |||
178 | default: |
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179 | break; |
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180 | } |
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181 | } |
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182 | |||
183 | intel_state->visible = false; |
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184 | ret = intel_plane->check_plane(plane, crtc_state, intel_state); |
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185 | if (ret) |
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186 | return ret; |
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187 | |||
188 | return intel_plane_atomic_calc_changes(&crtc_state->base, state); |
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189 | } |
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190 | |||
191 | static void intel_plane_atomic_update(struct drm_plane *plane, |
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192 | struct drm_plane_state *old_state) |
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193 | { |
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194 | struct intel_plane *intel_plane = to_intel_plane(plane); |
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195 | struct intel_plane_state *intel_state = |
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196 | to_intel_plane_state(plane->state); |
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7144 | serge | 197 | struct drm_crtc *crtc = plane->state->crtc ?: old_state->crtc; |
6084 | serge | 198 | |
7144 | serge | 199 | if (intel_state->visible) |
200 | intel_plane->update_plane(plane, |
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201 | to_intel_crtc_state(crtc->state), |
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202 | intel_state); |
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203 | else |
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204 | intel_plane->disable_plane(plane, crtc); |
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6084 | serge | 205 | } |
206 | |||
207 | const struct drm_plane_helper_funcs intel_plane_helper_funcs = { |
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208 | .prepare_fb = intel_prepare_plane_fb, |
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209 | .cleanup_fb = intel_cleanup_plane_fb, |
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210 | .atomic_check = intel_plane_atomic_check, |
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211 | .atomic_update = intel_plane_atomic_update, |
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212 | }; |
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213 | |||
214 | /** |
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215 | * intel_plane_atomic_get_property - fetch plane property value |
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216 | * @plane: plane to fetch property for |
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217 | * @state: state containing the property value |
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218 | * @property: property to look up |
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219 | * @val: pointer to write property value into |
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220 | * |
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221 | * The DRM core does not store shadow copies of properties for |
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222 | * atomic-capable drivers. This entrypoint is used to fetch |
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223 | * the current value of a driver-specific plane property. |
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224 | */ |
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225 | int |
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226 | intel_plane_atomic_get_property(struct drm_plane *plane, |
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227 | const struct drm_plane_state *state, |
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228 | struct drm_property *property, |
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229 | uint64_t *val) |
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230 | { |
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231 | DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); |
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232 | return -EINVAL; |
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233 | } |
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234 | |||
235 | /** |
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236 | * intel_plane_atomic_set_property - set plane property value |
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237 | * @plane: plane to set property for |
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238 | * @state: state to update property value in |
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239 | * @property: property to set |
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240 | * @val: value to set property to |
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241 | * |
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242 | * Writes the specified property value for a plane into the provided atomic |
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243 | * state object. |
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244 | * |
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245 | * Returns 0 on success, -EINVAL on unrecognized properties |
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246 | */ |
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247 | int |
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248 | intel_plane_atomic_set_property(struct drm_plane *plane, |
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249 | struct drm_plane_state *state, |
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250 | struct drm_property *property, |
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251 | uint64_t val) |
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252 | { |
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253 | DRM_DEBUG_KMS("Unknown plane property '%s'\n", property->name); |
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254 | return -EINVAL; |
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255 | } |