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Rev | Author | Line No. | Line |
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1123 | serge | 1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation |
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3 | * Copyright (c) 2007 Dave Airlie |
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4 | * |
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5 | * DRM core CRTC related functions |
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6 | * |
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7 | * Permission to use, copy, modify, distribute, and sell this software and its |
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8 | * documentation for any purpose is hereby granted without fee, provided that |
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9 | * the above copyright notice appear in all copies and that both that copyright |
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10 | * notice and this permission notice appear in supporting documentation, and |
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11 | * that the name of the copyright holders not be used in advertising or |
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12 | * publicity pertaining to distribution of the software without specific, |
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13 | * written prior permission. The copyright holders make no representations |
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14 | * about the suitability of this software for any purpose. It is provided "as |
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15 | * is" without express or implied warranty. |
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16 | * |
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17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
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19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
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20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
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23 | * OF THIS SOFTWARE. |
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24 | * |
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25 | * Authors: |
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26 | * Keith Packard |
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27 | * Eric Anholt |
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28 | * Dave Airlie |
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29 | * Jesse Barnes |
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30 | */ |
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31 | |||
3031 | serge | 32 | #include |
33 | #include |
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1123 | serge | 34 | |
3031 | serge | 35 | #include |
36 | #include |
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37 | #include |
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38 | #include |
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39 | #include |
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40 | #include |
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41 | |||
1963 | serge | 42 | static bool drm_kms_helper_poll = true; |
43 | |||
1123 | serge | 44 | static void drm_mode_validate_flag(struct drm_connector *connector, |
45 | int flags) |
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46 | { |
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3031 | serge | 47 | struct drm_display_mode *mode; |
1123 | serge | 48 | |
49 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) |
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50 | return; |
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51 | |||
3031 | serge | 52 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 53 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
54 | !(flags & DRM_MODE_FLAG_INTERLACE)) |
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55 | mode->status = MODE_NO_INTERLACE; |
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56 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && |
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57 | !(flags & DRM_MODE_FLAG_DBLSCAN)) |
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58 | mode->status = MODE_NO_DBLESCAN; |
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59 | } |
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60 | |||
61 | return; |
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62 | } |
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63 | |||
64 | /** |
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1963 | serge | 65 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
1123 | serge | 66 | * @dev: DRM device |
67 | * @maxX: max width for modes |
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68 | * @maxY: max height for modes |
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69 | * |
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70 | * LOCKING: |
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71 | * Caller must hold mode config lock. |
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72 | * |
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73 | * Based on @dev's mode_config layout, scan all the connectors and try to detect |
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74 | * modes on them. Modes will first be added to the connector's probed_modes |
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75 | * list, then culled (based on validity and the @maxX, @maxY parameters) and |
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76 | * put into the normal modes list. |
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77 | * |
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78 | * Intended to be used either at bootup time or when major configuration |
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79 | * changes have occurred. |
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80 | * |
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81 | * FIXME: take into account monitor limits |
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82 | * |
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83 | * RETURNS: |
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84 | * Number of modes found on @connector. |
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85 | */ |
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86 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
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87 | uint32_t maxX, uint32_t maxY) |
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88 | { |
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89 | struct drm_device *dev = connector->dev; |
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3031 | serge | 90 | struct drm_display_mode *mode; |
1123 | serge | 91 | struct drm_connector_helper_funcs *connector_funcs = |
92 | connector->helper_private; |
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93 | int count = 0; |
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94 | int mode_flags = 0; |
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95 | |||
1963 | serge | 96 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
97 | drm_get_connector_name(connector)); |
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1123 | serge | 98 | /* set all modes to the unverified state */ |
3031 | serge | 99 | list_for_each_entry(mode, &connector->modes, head) |
1123 | serge | 100 | mode->status = MODE_UNVERIFIED; |
101 | |||
1221 | serge | 102 | if (connector->force) { |
103 | if (connector->force == DRM_FORCE_ON) |
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104 | connector->status = connector_status_connected; |
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105 | else |
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106 | connector->status = connector_status_disconnected; |
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107 | if (connector->funcs->force) |
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108 | connector->funcs->force(connector); |
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1963 | serge | 109 | } else { |
110 | connector->status = connector->funcs->detect(connector, true); |
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111 | // drm_kms_helper_poll_enable(dev); |
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112 | } |
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1123 | serge | 113 | |
114 | if (connector->status == connector_status_disconnected) { |
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1963 | serge | 115 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
116 | connector->base.id, drm_get_connector_name(connector)); |
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117 | drm_mode_connector_update_edid_property(connector, NULL); |
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1179 | serge | 118 | goto prune; |
1123 | serge | 119 | } |
120 | |||
3031 | serge | 121 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
122 | count = drm_load_edid_firmware(connector); |
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123 | if (count == 0) |
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124 | #endif |
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1123 | serge | 125 | count = (*connector_funcs->get_modes)(connector); |
3031 | serge | 126 | |
1963 | serge | 127 | if (count == 0 && connector->status == connector_status_connected) |
1321 | serge | 128 | count = drm_add_modes_noedid(connector, 1024, 768); |
1963 | serge | 129 | if (count == 0) |
130 | goto prune; |
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1123 | serge | 131 | |
132 | drm_mode_connector_list_update(connector); |
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133 | |||
134 | if (maxX && maxY) |
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135 | drm_mode_validate_size(dev, &connector->modes, maxX, |
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136 | maxY, 0); |
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137 | |||
138 | if (connector->interlace_allowed) |
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139 | mode_flags |= DRM_MODE_FLAG_INTERLACE; |
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140 | if (connector->doublescan_allowed) |
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141 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; |
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142 | drm_mode_validate_flag(connector, mode_flags); |
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143 | |||
3031 | serge | 144 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 145 | if (mode->status == MODE_OK) |
146 | mode->status = connector_funcs->mode_valid(connector, |
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147 | mode); |
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148 | } |
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149 | |||
1179 | serge | 150 | prune: |
1123 | serge | 151 | drm_mode_prune_invalid(dev, &connector->modes, true); |
152 | |||
153 | if (list_empty(&connector->modes)) |
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154 | return 0; |
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155 | |||
156 | drm_mode_sort(&connector->modes); |
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157 | |||
1963 | serge | 158 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
1179 | serge | 159 | drm_get_connector_name(connector)); |
3031 | serge | 160 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 161 | mode->vrefresh = drm_mode_vrefresh(mode); |
162 | |||
163 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
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164 | drm_mode_debug_printmodeline(mode); |
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165 | } |
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166 | |||
167 | return count; |
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168 | } |
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169 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
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170 | |||
171 | /** |
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172 | * drm_helper_encoder_in_use - check if a given encoder is in use |
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173 | * @encoder: encoder to check |
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174 | * |
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175 | * LOCKING: |
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176 | * Caller must hold mode config lock. |
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177 | * |
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178 | * Walk @encoders's DRM device's mode_config and see if it's in use. |
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179 | * |
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180 | * RETURNS: |
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181 | * True if @encoder is part of the mode_config, false otherwise. |
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182 | */ |
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183 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
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184 | { |
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185 | struct drm_connector *connector; |
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186 | struct drm_device *dev = encoder->dev; |
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187 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
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188 | if (connector->encoder == encoder) |
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189 | return true; |
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190 | return false; |
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191 | } |
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192 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
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193 | |||
194 | /** |
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195 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
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196 | * @crtc: CRTC to check |
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197 | * |
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198 | * LOCKING: |
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199 | * Caller must hold mode config lock. |
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200 | * |
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201 | * Walk @crtc's DRM device's mode_config and see if it's in use. |
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202 | * |
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203 | * RETURNS: |
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204 | * True if @crtc is part of the mode_config, false otherwise. |
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205 | */ |
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206 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
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207 | { |
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208 | struct drm_encoder *encoder; |
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209 | struct drm_device *dev = crtc->dev; |
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210 | /* FIXME: Locking around list access? */ |
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211 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
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212 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
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213 | return true; |
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214 | return false; |
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215 | } |
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216 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
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217 | |||
1963 | serge | 218 | static void |
219 | drm_encoder_disable(struct drm_encoder *encoder) |
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220 | { |
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221 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
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222 | |||
223 | if (encoder_funcs->disable) |
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224 | (*encoder_funcs->disable)(encoder); |
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225 | else |
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226 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
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227 | } |
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228 | |||
1123 | serge | 229 | /** |
1404 | serge | 230 | * drm_helper_disable_unused_functions - disable unused objects |
1123 | serge | 231 | * @dev: DRM device |
232 | * |
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233 | * LOCKING: |
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234 | * Caller must hold mode config lock. |
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235 | * |
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236 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
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237 | * by calling its dpms function, which should power it off. |
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238 | */ |
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239 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
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240 | { |
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241 | struct drm_encoder *encoder; |
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1179 | serge | 242 | struct drm_connector *connector; |
1123 | serge | 243 | struct drm_crtc *crtc; |
244 | |||
1179 | serge | 245 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
246 | if (!connector->encoder) |
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247 | continue; |
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248 | if (connector->status == connector_status_disconnected) |
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249 | connector->encoder = NULL; |
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250 | } |
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251 | |||
1123 | serge | 252 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
1179 | serge | 253 | if (!drm_helper_encoder_in_use(encoder)) { |
1963 | serge | 254 | drm_encoder_disable(encoder); |
1179 | serge | 255 | /* disconnector encoder from any connector */ |
256 | encoder->crtc = NULL; |
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257 | } |
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1123 | serge | 258 | } |
259 | |||
260 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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261 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
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262 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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263 | if (!crtc->enabled) { |
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1963 | serge | 264 | if (crtc_funcs->disable) |
265 | (*crtc_funcs->disable)(crtc); |
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266 | else |
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267 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
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1123 | serge | 268 | crtc->fb = NULL; |
269 | } |
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270 | } |
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3031 | serge | 271 | |
1123 | serge | 272 | } |
273 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
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274 | |||
275 | /** |
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276 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? |
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277 | * @encoder: encoder to test |
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278 | * @crtc: crtc to test |
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279 | * |
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280 | * Return false if @encoder can't be driven by @crtc, true otherwise. |
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281 | */ |
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282 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, |
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283 | struct drm_crtc *crtc) |
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284 | { |
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285 | struct drm_device *dev; |
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286 | struct drm_crtc *tmp; |
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287 | int crtc_mask = 1; |
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288 | |||
1963 | serge | 289 | WARN(!crtc, "checking null crtc?\n"); |
1123 | serge | 290 | |
291 | dev = crtc->dev; |
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292 | |||
293 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { |
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294 | if (tmp == crtc) |
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295 | break; |
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296 | crtc_mask <<= 1; |
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297 | } |
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298 | |||
299 | if (encoder->possible_crtcs & crtc_mask) |
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300 | return true; |
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301 | return false; |
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302 | } |
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303 | |||
304 | /* |
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305 | * Check the CRTC we're going to map each output to vs. its current |
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306 | * CRTC. If they don't match, we have to disable the output and the CRTC |
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307 | * since the driver will have to re-route things. |
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308 | */ |
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309 | static void |
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310 | drm_crtc_prepare_encoders(struct drm_device *dev) |
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311 | { |
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312 | struct drm_encoder_helper_funcs *encoder_funcs; |
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313 | struct drm_encoder *encoder; |
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314 | |||
315 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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316 | encoder_funcs = encoder->helper_private; |
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317 | /* Disable unused encoders */ |
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318 | if (encoder->crtc == NULL) |
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1963 | serge | 319 | drm_encoder_disable(encoder); |
1123 | serge | 320 | /* Disable encoders whose CRTC is about to change */ |
321 | if (encoder_funcs->get_crtc && |
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322 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
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1963 | serge | 323 | drm_encoder_disable(encoder); |
1123 | serge | 324 | } |
325 | } |
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326 | |||
327 | /** |
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328 | * drm_crtc_set_mode - set a mode |
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329 | * @crtc: CRTC to program |
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330 | * @mode: mode to use |
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331 | * @x: width of mode |
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332 | * @y: height of mode |
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333 | * |
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334 | * LOCKING: |
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335 | * Caller must hold mode config lock. |
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336 | * |
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337 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
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338 | * to fixup or reject the mode prior to trying to set it. |
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339 | * |
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340 | * RETURNS: |
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341 | * True if the mode was set successfully, or false otherwise. |
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342 | */ |
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343 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
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344 | struct drm_display_mode *mode, |
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345 | int x, int y, |
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346 | struct drm_framebuffer *old_fb) |
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347 | { |
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348 | struct drm_device *dev = crtc->dev; |
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1963 | serge | 349 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
1123 | serge | 350 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
351 | struct drm_encoder_helper_funcs *encoder_funcs; |
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352 | int saved_x, saved_y; |
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353 | struct drm_encoder *encoder; |
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354 | bool ret = true; |
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355 | |||
356 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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357 | if (!crtc->enabled) |
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358 | return true; |
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359 | |||
3031 | serge | 360 | printf("crtc->enabled\n"); |
361 | |||
1963 | serge | 362 | adjusted_mode = drm_mode_duplicate(dev, mode); |
3031 | serge | 363 | if (!adjusted_mode) |
364 | return false; |
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1963 | serge | 365 | |
3031 | serge | 366 | printf("adjusted_mode\n"); |
367 | |||
1963 | serge | 368 | saved_hwmode = crtc->hwmode; |
1123 | serge | 369 | saved_mode = crtc->mode; |
370 | saved_x = crtc->x; |
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371 | saved_y = crtc->y; |
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372 | |||
373 | /* Update crtc values up front so the driver can rely on them for mode |
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374 | * setting. |
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375 | */ |
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376 | crtc->mode = *mode; |
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377 | crtc->x = x; |
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378 | crtc->y = y; |
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379 | |||
380 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
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381 | * adjust it according to limitations or connector properties, and also |
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382 | * a chance to reject the mode entirely. |
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383 | */ |
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384 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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385 | |||
386 | if (encoder->crtc != crtc) |
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387 | continue; |
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388 | encoder_funcs = encoder->helper_private; |
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389 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
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390 | adjusted_mode))) { |
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3031 | serge | 391 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
1123 | serge | 392 | goto done; |
393 | } |
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394 | } |
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395 | |||
3031 | serge | 396 | printf("list_for_each_entry\n"); |
397 | printf("mode_fixup %x\n", crtc_funcs->mode_fixup); |
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398 | |||
1123 | serge | 399 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
3031 | serge | 400 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
1123 | serge | 401 | goto done; |
402 | } |
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1963 | serge | 403 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
1123 | serge | 404 | |
405 | /* Prepare the encoders and CRTCs before setting the mode. */ |
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406 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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407 | |||
408 | if (encoder->crtc != crtc) |
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409 | continue; |
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410 | encoder_funcs = encoder->helper_private; |
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411 | /* Disable the encoders as the first thing we do. */ |
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412 | encoder_funcs->prepare(encoder); |
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413 | } |
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414 | |||
415 | drm_crtc_prepare_encoders(dev); |
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416 | |||
417 | crtc_funcs->prepare(crtc); |
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418 | |||
419 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
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420 | * on the DPLL. |
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421 | */ |
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422 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
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423 | if (!ret) |
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424 | goto done; |
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425 | |||
426 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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427 | |||
428 | if (encoder->crtc != crtc) |
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429 | continue; |
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430 | |||
1963 | serge | 431 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
432 | encoder->base.id, drm_get_encoder_name(encoder), |
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433 | mode->base.id, mode->name); |
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1123 | serge | 434 | encoder_funcs = encoder->helper_private; |
435 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
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436 | } |
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437 | |||
438 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
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439 | crtc_funcs->commit(crtc); |
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440 | |||
441 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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442 | |||
443 | if (encoder->crtc != crtc) |
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444 | continue; |
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445 | |||
446 | encoder_funcs = encoder->helper_private; |
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447 | encoder_funcs->commit(encoder); |
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448 | |||
449 | } |
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450 | |||
1963 | serge | 451 | /* Store real post-adjustment hardware mode. */ |
452 | crtc->hwmode = *adjusted_mode; |
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453 | |||
454 | /* Calculate and store various constants which |
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455 | * are later needed by vblank and swap-completion |
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456 | * timestamping. They are derived from true hwmode. |
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457 | */ |
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458 | drm_calc_timestamping_constants(crtc); |
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459 | |||
1123 | serge | 460 | /* FIXME: add subpixel order */ |
461 | done: |
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1963 | serge | 462 | drm_mode_destroy(dev, adjusted_mode); |
1123 | serge | 463 | if (!ret) { |
1963 | serge | 464 | crtc->hwmode = saved_hwmode; |
1123 | serge | 465 | crtc->mode = saved_mode; |
466 | crtc->x = saved_x; |
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467 | crtc->y = saved_y; |
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468 | } |
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1179 | serge | 469 | |
1123 | serge | 470 | return ret; |
471 | } |
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472 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
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473 | |||
474 | |||
3031 | serge | 475 | static int |
476 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
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477 | { |
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478 | struct drm_device *dev = crtc->dev; |
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479 | struct drm_connector *connector; |
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480 | struct drm_encoder *encoder; |
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481 | |||
482 | /* Decouple all encoders and their attached connectors from this crtc */ |
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483 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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484 | if (encoder->crtc != crtc) |
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485 | continue; |
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486 | |||
487 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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488 | if (connector->encoder != encoder) |
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489 | continue; |
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490 | |||
491 | connector->encoder = NULL; |
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492 | } |
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493 | } |
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494 | |||
495 | drm_helper_disable_unused_functions(dev); |
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496 | return 0; |
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497 | } |
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498 | |||
1123 | serge | 499 | /** |
500 | * drm_crtc_helper_set_config - set a new config from userspace |
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501 | * @crtc: CRTC to setup |
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502 | * @crtc_info: user provided configuration |
||
503 | * @new_mode: new mode to set |
||
504 | * @connector_set: set of connectors for the new config |
||
505 | * @fb: new framebuffer |
||
506 | * |
||
507 | * LOCKING: |
||
508 | * Caller must hold mode config lock. |
||
509 | * |
||
510 | * Setup a new configuration, provided by the user in @crtc_info, and enable |
||
511 | * it. |
||
512 | * |
||
513 | * RETURNS: |
||
514 | * Zero. (FIXME) |
||
515 | */ |
||
516 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
||
517 | { |
||
518 | struct drm_device *dev; |
||
1179 | serge | 519 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
520 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
||
1123 | serge | 521 | struct drm_framebuffer *old_fb = NULL; |
1179 | serge | 522 | bool mode_changed = false; /* if true do a full mode set */ |
523 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
||
524 | struct drm_connector *save_connectors, *connector; |
||
1123 | serge | 525 | int count = 0, ro, fail = 0; |
526 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
3031 | serge | 527 | struct drm_mode_set save_set; |
528 | int ret; |
||
1963 | serge | 529 | int i; |
1123 | serge | 530 | |
1179 | serge | 531 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 532 | |
533 | if (!set) |
||
534 | return -EINVAL; |
||
535 | |||
536 | if (!set->crtc) |
||
537 | return -EINVAL; |
||
538 | |||
539 | if (!set->crtc->helper_private) |
||
540 | return -EINVAL; |
||
541 | |||
542 | crtc_funcs = set->crtc->helper_private; |
||
543 | |||
1963 | serge | 544 | if (!set->mode) |
545 | set->fb = NULL; |
||
546 | |||
547 | if (set->fb) { |
||
548 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
||
549 | set->crtc->base.id, set->fb->base.id, |
||
1123 | serge | 550 | (int)set->num_connectors, set->x, set->y); |
1963 | serge | 551 | } else { |
552 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
||
3031 | serge | 553 | return drm_crtc_helper_disable(set->crtc); |
1963 | serge | 554 | } |
1123 | serge | 555 | |
556 | dev = set->crtc->dev; |
||
557 | |||
1179 | serge | 558 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
559 | * connector data. */ |
||
560 | save_crtcs = kzalloc(dev->mode_config.num_crtc * |
||
561 | sizeof(struct drm_crtc), GFP_KERNEL); |
||
1123 | serge | 562 | if (!save_crtcs) |
563 | return -ENOMEM; |
||
564 | |||
1179 | serge | 565 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
566 | sizeof(struct drm_encoder), GFP_KERNEL); |
||
1123 | serge | 567 | if (!save_encoders) { |
568 | kfree(save_crtcs); |
||
569 | return -ENOMEM; |
||
570 | } |
||
571 | |||
1179 | serge | 572 | save_connectors = kzalloc(dev->mode_config.num_connector * |
573 | sizeof(struct drm_connector), GFP_KERNEL); |
||
574 | if (!save_connectors) { |
||
575 | kfree(save_crtcs); |
||
576 | kfree(save_encoders); |
||
577 | return -ENOMEM; |
||
578 | } |
||
579 | |||
580 | /* Copy data. Note that driver private data is not affected. |
||
581 | * Should anything bad happen only the expected state is |
||
582 | * restored, not the drivers personal bookkeeping. |
||
583 | */ |
||
584 | count = 0; |
||
585 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
586 | save_crtcs[count++] = *crtc; |
||
587 | } |
||
588 | |||
589 | count = 0; |
||
590 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
591 | save_encoders[count++] = *encoder; |
||
592 | } |
||
593 | |||
594 | count = 0; |
||
595 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
596 | save_connectors[count++] = *connector; |
||
597 | } |
||
598 | |||
3031 | serge | 599 | save_set.crtc = set->crtc; |
600 | save_set.mode = &set->crtc->mode; |
||
601 | save_set.x = set->crtc->x; |
||
602 | save_set.y = set->crtc->y; |
||
603 | save_set.fb = set->crtc->fb; |
||
604 | |||
1123 | serge | 605 | /* We should be able to check here if the fb has the same properties |
606 | * and then just flip_or_move it */ |
||
607 | if (set->crtc->fb != set->fb) { |
||
608 | /* If we have no fb then treat it as a full mode set */ |
||
609 | if (set->crtc->fb == NULL) { |
||
1179 | serge | 610 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
1123 | serge | 611 | mode_changed = true; |
1179 | serge | 612 | } else if (set->fb == NULL) { |
613 | mode_changed = true; |
||
2160 | serge | 614 | } else if (set->fb->depth != set->crtc->fb->depth) { |
615 | mode_changed = true; |
||
616 | } else if (set->fb->bits_per_pixel != |
||
617 | set->crtc->fb->bits_per_pixel) { |
||
618 | mode_changed = true; |
||
1430 | serge | 619 | } else |
1123 | serge | 620 | fb_changed = true; |
621 | } |
||
622 | |||
623 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
||
624 | fb_changed = true; |
||
625 | |||
626 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
||
1179 | serge | 627 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
1123 | serge | 628 | drm_mode_debug_printmodeline(&set->crtc->mode); |
629 | drm_mode_debug_printmodeline(set->mode); |
||
630 | mode_changed = true; |
||
631 | } |
||
632 | |||
633 | /* a) traverse passed in connector list and get encoders for them */ |
||
634 | count = 0; |
||
635 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
636 | struct drm_connector_helper_funcs *connector_funcs = |
||
637 | connector->helper_private; |
||
638 | new_encoder = connector->encoder; |
||
639 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
640 | if (set->connectors[ro] == connector) { |
||
641 | new_encoder = connector_funcs->best_encoder(connector); |
||
642 | /* if we can't get an encoder for a connector |
||
643 | we are setting now - then fail */ |
||
644 | if (new_encoder == NULL) |
||
645 | /* don't break so fail path works correct */ |
||
646 | fail = 1; |
||
647 | break; |
||
648 | } |
||
649 | } |
||
650 | |||
651 | if (new_encoder != connector->encoder) { |
||
1179 | serge | 652 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
1123 | serge | 653 | mode_changed = true; |
1179 | serge | 654 | /* If the encoder is reused for another connector, then |
655 | * the appropriate crtc will be set later. |
||
656 | */ |
||
657 | if (connector->encoder) |
||
658 | connector->encoder->crtc = NULL; |
||
1123 | serge | 659 | connector->encoder = new_encoder; |
660 | } |
||
661 | } |
||
662 | |||
663 | if (fail) { |
||
664 | ret = -EINVAL; |
||
1179 | serge | 665 | goto fail; |
1123 | serge | 666 | } |
667 | |||
668 | count = 0; |
||
669 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
670 | if (!connector->encoder) |
||
671 | continue; |
||
672 | |||
673 | if (connector->encoder->crtc == set->crtc) |
||
674 | new_crtc = NULL; |
||
675 | else |
||
676 | new_crtc = connector->encoder->crtc; |
||
677 | |||
678 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
679 | if (set->connectors[ro] == connector) |
||
680 | new_crtc = set->crtc; |
||
681 | } |
||
682 | |||
683 | /* Make sure the new CRTC will work with the encoder */ |
||
684 | if (new_crtc && |
||
685 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
||
686 | ret = -EINVAL; |
||
1179 | serge | 687 | goto fail; |
1123 | serge | 688 | } |
689 | if (new_crtc != connector->encoder->crtc) { |
||
1179 | serge | 690 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
1123 | serge | 691 | mode_changed = true; |
692 | connector->encoder->crtc = new_crtc; |
||
693 | } |
||
1963 | serge | 694 | if (new_crtc) { |
695 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
||
696 | connector->base.id, drm_get_connector_name(connector), |
||
697 | new_crtc->base.id); |
||
698 | } else { |
||
699 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
||
700 | connector->base.id, drm_get_connector_name(connector)); |
||
701 | } |
||
1123 | serge | 702 | } |
703 | |||
704 | /* mode_set_base is not a required function */ |
||
705 | if (fb_changed && !crtc_funcs->mode_set_base) |
||
706 | mode_changed = true; |
||
707 | |||
708 | if (mode_changed) { |
||
1963 | serge | 709 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
710 | if (set->crtc->enabled) { |
||
1179 | serge | 711 | DRM_DEBUG_KMS("attempting to set mode from" |
712 | " userspace\n"); |
||
1123 | serge | 713 | drm_mode_debug_printmodeline(set->mode); |
1963 | serge | 714 | old_fb = set->crtc->fb; |
715 | set->crtc->fb = set->fb; |
||
1123 | serge | 716 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
717 | set->x, set->y, |
||
718 | old_fb)) { |
||
1963 | serge | 719 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
720 | set->crtc->base.id); |
||
721 | set->crtc->fb = old_fb; |
||
1123 | serge | 722 | ret = -EINVAL; |
1179 | serge | 723 | goto fail; |
1123 | serge | 724 | } |
1963 | serge | 725 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
726 | for (i = 0; i < set->num_connectors; i++) { |
||
727 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, |
||
728 | drm_get_connector_name(set->connectors[i])); |
||
3031 | serge | 729 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
1963 | serge | 730 | } |
1123 | serge | 731 | } |
732 | drm_helper_disable_unused_functions(dev); |
||
733 | } else if (fb_changed) { |
||
1179 | serge | 734 | set->crtc->x = set->x; |
735 | set->crtc->y = set->y; |
||
736 | |||
1123 | serge | 737 | old_fb = set->crtc->fb; |
738 | if (set->crtc->fb != set->fb) |
||
739 | set->crtc->fb = set->fb; |
||
740 | ret = crtc_funcs->mode_set_base(set->crtc, |
||
741 | set->x, set->y, old_fb); |
||
1963 | serge | 742 | if (ret != 0) { |
743 | set->crtc->fb = old_fb; |
||
1179 | serge | 744 | goto fail; |
1123 | serge | 745 | } |
1963 | serge | 746 | } |
1123 | serge | 747 | |
1179 | serge | 748 | kfree(save_connectors); |
1123 | serge | 749 | kfree(save_encoders); |
750 | kfree(save_crtcs); |
||
751 | return 0; |
||
752 | |||
1179 | serge | 753 | fail: |
754 | /* Restore all previous data. */ |
||
1123 | serge | 755 | count = 0; |
1179 | serge | 756 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
757 | *crtc = save_crtcs[count++]; |
||
758 | } |
||
1123 | serge | 759 | |
1179 | serge | 760 | count = 0; |
761 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
762 | *encoder = save_encoders[count++]; |
||
1123 | serge | 763 | } |
1179 | serge | 764 | |
1123 | serge | 765 | count = 0; |
766 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1179 | serge | 767 | *connector = save_connectors[count++]; |
1123 | serge | 768 | } |
1179 | serge | 769 | |
3031 | serge | 770 | /* Try to restore the config */ |
771 | if (mode_changed && |
||
772 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
||
773 | save_set.y, save_set.fb)) |
||
774 | DRM_ERROR("failed to restore config after modeset failure\n"); |
||
775 | |||
1179 | serge | 776 | kfree(save_connectors); |
1123 | serge | 777 | kfree(save_encoders); |
1179 | serge | 778 | kfree(save_crtcs); |
1123 | serge | 779 | return ret; |
780 | } |
||
781 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
||
782 | |||
783 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
||
784 | { |
||
785 | int dpms = DRM_MODE_DPMS_OFF; |
||
786 | struct drm_connector *connector; |
||
787 | struct drm_device *dev = encoder->dev; |
||
788 | |||
789 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
790 | if (connector->encoder == encoder) |
||
791 | if (connector->dpms < dpms) |
||
792 | dpms = connector->dpms; |
||
793 | return dpms; |
||
794 | } |
||
795 | |||
796 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
||
797 | { |
||
798 | int dpms = DRM_MODE_DPMS_OFF; |
||
799 | struct drm_connector *connector; |
||
800 | struct drm_device *dev = crtc->dev; |
||
801 | |||
802 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
803 | if (connector->encoder && connector->encoder->crtc == crtc) |
||
804 | if (connector->dpms < dpms) |
||
805 | dpms = connector->dpms; |
||
806 | return dpms; |
||
807 | } |
||
808 | |||
809 | /** |
||
810 | * drm_helper_connector_dpms |
||
811 | * @connector affected connector |
||
812 | * @mode DPMS mode |
||
813 | * |
||
814 | * Calls the low-level connector DPMS function, then |
||
815 | * calls appropriate encoder and crtc DPMS functions as well |
||
816 | */ |
||
817 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
||
818 | { |
||
819 | struct drm_encoder *encoder = connector->encoder; |
||
820 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
||
821 | int old_dpms; |
||
822 | |||
823 | if (mode == connector->dpms) |
||
824 | return; |
||
825 | |||
826 | old_dpms = connector->dpms; |
||
827 | connector->dpms = mode; |
||
828 | |||
829 | /* from off to on, do crtc then encoder */ |
||
830 | if (mode < old_dpms) { |
||
831 | if (crtc) { |
||
832 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
833 | if (crtc_funcs->dpms) |
||
834 | (*crtc_funcs->dpms) (crtc, |
||
835 | drm_helper_choose_crtc_dpms(crtc)); |
||
836 | } |
||
837 | if (encoder) { |
||
838 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
839 | if (encoder_funcs->dpms) |
||
840 | (*encoder_funcs->dpms) (encoder, |
||
841 | drm_helper_choose_encoder_dpms(encoder)); |
||
842 | } |
||
843 | } |
||
844 | |||
845 | /* from on to off, do encoder then crtc */ |
||
846 | if (mode > old_dpms) { |
||
847 | if (encoder) { |
||
848 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
849 | if (encoder_funcs->dpms) |
||
850 | (*encoder_funcs->dpms) (encoder, |
||
851 | drm_helper_choose_encoder_dpms(encoder)); |
||
852 | } |
||
853 | if (crtc) { |
||
854 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
855 | if (crtc_funcs->dpms) |
||
856 | (*crtc_funcs->dpms) (crtc, |
||
857 | drm_helper_choose_crtc_dpms(crtc)); |
||
858 | } |
||
859 | } |
||
860 | |||
861 | return; |
||
862 | } |
||
863 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
||
864 | |||
865 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
||
3031 | serge | 866 | struct drm_mode_fb_cmd2 *mode_cmd) |
1123 | serge | 867 | { |
3031 | serge | 868 | int i; |
869 | |||
1123 | serge | 870 | fb->width = mode_cmd->width; |
871 | fb->height = mode_cmd->height; |
||
3031 | serge | 872 | for (i = 0; i < 4; i++) { |
873 | fb->pitches[i] = mode_cmd->pitches[i]; |
||
874 | fb->offsets[i] = mode_cmd->offsets[i]; |
||
875 | } |
||
876 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
||
877 | &fb->bits_per_pixel); |
||
878 | fb->pixel_format = mode_cmd->pixel_format; |
||
1123 | serge | 879 | |
880 | return 0; |
||
881 | } |
||
882 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
||
883 | |||
884 | int drm_helper_resume_force_mode(struct drm_device *dev) |
||
885 | { |
||
886 | struct drm_crtc *crtc; |
||
1404 | serge | 887 | struct drm_encoder *encoder; |
888 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
889 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
1123 | serge | 890 | int ret; |
891 | |||
892 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
893 | |||
1179 | serge | 894 | if (!crtc->enabled) |
895 | continue; |
||
1123 | serge | 896 | |
1179 | serge | 897 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1123 | serge | 898 | crtc->x, crtc->y, crtc->fb); |
899 | |||
900 | if (ret == false) |
||
901 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
||
1404 | serge | 902 | |
903 | /* Turn off outputs that were already powered off */ |
||
904 | if (drm_helper_choose_crtc_dpms(crtc)) { |
||
905 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
906 | |||
907 | if(encoder->crtc != crtc) |
||
908 | continue; |
||
909 | |||
910 | encoder_funcs = encoder->helper_private; |
||
911 | if (encoder_funcs->dpms) |
||
912 | (*encoder_funcs->dpms) (encoder, |
||
913 | drm_helper_choose_encoder_dpms(encoder)); |
||
1963 | serge | 914 | } |
1404 | serge | 915 | |
916 | crtc_funcs = crtc->helper_private; |
||
917 | if (crtc_funcs->dpms) |
||
918 | (*crtc_funcs->dpms) (crtc, |
||
919 | drm_helper_choose_crtc_dpms(crtc)); |
||
920 | } |
||
921 | } |
||
1179 | serge | 922 | /* disable the unused connectors while restoring the modesetting */ |
923 | drm_helper_disable_unused_functions(dev); |
||
1123 | serge | 924 | return 0; |
925 | } |
||
926 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
||
1963 | serge | 927 | |
928 | #if 0 |
||
929 | |||
930 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
||
931 | static void output_poll_execute(struct work_struct *work) |
||
932 | { |
||
933 | struct delayed_work *delayed_work = to_delayed_work(work); |
||
934 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); |
||
935 | struct drm_connector *connector; |
||
936 | enum drm_connector_status old_status; |
||
937 | bool repoll = false, changed = false; |
||
938 | |||
939 | if (!drm_kms_helper_poll) |
||
940 | return; |
||
941 | |||
942 | mutex_lock(&dev->mode_config.mutex); |
||
943 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
944 | |||
945 | /* if this is HPD or polled don't check it - |
||
946 | TV out for instance */ |
||
947 | if (!connector->polled) |
||
948 | continue; |
||
949 | |||
950 | else if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT)) |
||
951 | repoll = true; |
||
952 | |||
953 | old_status = connector->status; |
||
954 | /* if we are connected and don't want to poll for disconnect |
||
955 | skip it */ |
||
956 | if (old_status == connector_status_connected && |
||
957 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT) && |
||
958 | !(connector->polled & DRM_CONNECTOR_POLL_HPD)) |
||
959 | continue; |
||
960 | |||
961 | connector->status = connector->funcs->detect(connector, false); |
||
962 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
||
963 | connector->base.id, |
||
964 | drm_get_connector_name(connector), |
||
965 | old_status, connector->status); |
||
966 | if (old_status != connector->status) |
||
967 | changed = true; |
||
968 | } |
||
969 | |||
970 | mutex_unlock(&dev->mode_config.mutex); |
||
971 | |||
972 | if (changed) { |
||
973 | /* send a uevent + call fbdev */ |
||
974 | drm_sysfs_hotplug_event(dev); |
||
975 | if (dev->mode_config.funcs->output_poll_changed) |
||
976 | dev->mode_config.funcs->output_poll_changed(dev); |
||
977 | } |
||
978 | |||
979 | if (repoll) |
||
3031 | serge | 980 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
1963 | serge | 981 | } |
982 | |||
983 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
||
984 | { |
||
985 | if (!dev->mode_config.poll_enabled) |
||
986 | return; |
||
987 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
||
988 | } |
||
989 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); |
||
990 | |||
991 | void drm_kms_helper_poll_enable(struct drm_device *dev) |
||
992 | { |
||
993 | bool poll = false; |
||
994 | struct drm_connector *connector; |
||
995 | |||
996 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
||
997 | return; |
||
998 | |||
999 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1000 | if (connector->polled) |
||
1001 | poll = true; |
||
1002 | } |
||
1003 | |||
1004 | if (poll) |
||
3031 | serge | 1005 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
1963 | serge | 1006 | } |
1007 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
||
1008 | |||
1009 | void drm_kms_helper_poll_init(struct drm_device *dev) |
||
1010 | { |
||
1011 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
||
1012 | dev->mode_config.poll_enabled = true; |
||
1013 | |||
1014 | drm_kms_helper_poll_enable(dev); |
||
1015 | } |
||
1016 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
||
1017 | |||
1018 | void drm_kms_helper_poll_fini(struct drm_device *dev) |
||
1019 | { |
||
1020 | drm_kms_helper_poll_disable(dev); |
||
1021 | } |
||
1022 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); |
||
1023 | |||
1024 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
||
1025 | { |
||
1026 | if (!dev->mode_config.poll_enabled) |
||
1027 | return; |
||
1028 | |||
1029 | /* kill timer and schedule immediate execution, this doesn't block */ |
||
1030 | cancel_delayed_work(&dev->mode_config.output_poll_work); |
||
1031 | if (drm_kms_helper_poll) |
||
3031 | serge | 1032 | schedule_delayed_work(&dev->mode_config.output_poll_work, 0); |
1963 | serge | 1033 | } |
1034 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |
||
1035 | |||
1036 | #endif>>>>>>>=><=> |