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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 | |||
32 | #include "drmP.h" |
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33 | #include "drm_crtc.h" |
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34 | #include "drm_crtc_helper.h" |
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1221 | serge | 35 | #include "drm_fb_helper.h" |
1123 | serge | 36 | |
37 | static void drm_mode_validate_flag(struct drm_connector *connector, |
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38 | int flags) |
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39 | { |
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40 | struct drm_display_mode *mode, *t; |
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41 | |||
42 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) |
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43 | return; |
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44 | |||
45 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
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46 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
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47 | !(flags & DRM_MODE_FLAG_INTERLACE)) |
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48 | mode->status = MODE_NO_INTERLACE; |
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49 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && |
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50 | !(flags & DRM_MODE_FLAG_DBLSCAN)) |
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51 | mode->status = MODE_NO_DBLESCAN; |
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52 | } |
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53 | |||
54 | return; |
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55 | } |
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56 | |||
57 | /** |
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58 | * drm_helper_probe_connector_modes - get complete set of display modes |
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59 | * @dev: DRM device |
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60 | * @maxX: max width for modes |
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61 | * @maxY: max height for modes |
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62 | * |
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63 | * LOCKING: |
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64 | * Caller must hold mode config lock. |
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65 | * |
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66 | * Based on @dev's mode_config layout, scan all the connectors and try to detect |
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67 | * modes on them. Modes will first be added to the connector's probed_modes |
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68 | * list, then culled (based on validity and the @maxX, @maxY parameters) and |
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69 | * put into the normal modes list. |
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70 | * |
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71 | * Intended to be used either at bootup time or when major configuration |
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72 | * changes have occurred. |
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73 | * |
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74 | * FIXME: take into account monitor limits |
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75 | * |
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76 | * RETURNS: |
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77 | * Number of modes found on @connector. |
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78 | */ |
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79 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
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80 | uint32_t maxX, uint32_t maxY) |
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81 | { |
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82 | struct drm_device *dev = connector->dev; |
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83 | struct drm_display_mode *mode, *t; |
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84 | struct drm_connector_helper_funcs *connector_funcs = |
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85 | connector->helper_private; |
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86 | int count = 0; |
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87 | int mode_flags = 0; |
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88 | |||
1179 | serge | 89 | DRM_DEBUG_KMS("%s\n", drm_get_connector_name(connector)); |
1123 | serge | 90 | /* set all modes to the unverified state */ |
91 | list_for_each_entry_safe(mode, t, &connector->modes, head) |
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92 | mode->status = MODE_UNVERIFIED; |
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93 | |||
1221 | serge | 94 | if (connector->force) { |
95 | if (connector->force == DRM_FORCE_ON) |
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96 | connector->status = connector_status_connected; |
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97 | else |
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98 | connector->status = connector_status_disconnected; |
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99 | if (connector->funcs->force) |
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100 | connector->funcs->force(connector); |
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101 | } else |
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1123 | serge | 102 | connector->status = connector->funcs->detect(connector); |
103 | |||
104 | if (connector->status == connector_status_disconnected) { |
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1179 | serge | 105 | DRM_DEBUG_KMS("%s is disconnected\n", |
1123 | serge | 106 | drm_get_connector_name(connector)); |
1179 | serge | 107 | goto prune; |
1123 | serge | 108 | } |
109 | |||
110 | count = (*connector_funcs->get_modes)(connector); |
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1179 | serge | 111 | if (!count) { |
112 | count = drm_add_modes_noedid(connector, 800, 600); |
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1123 | serge | 113 | if (!count) |
114 | return 0; |
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1179 | serge | 115 | } |
1123 | serge | 116 | |
117 | drm_mode_connector_list_update(connector); |
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118 | |||
119 | if (maxX && maxY) |
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120 | drm_mode_validate_size(dev, &connector->modes, maxX, |
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121 | maxY, 0); |
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122 | |||
123 | if (connector->interlace_allowed) |
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124 | mode_flags |= DRM_MODE_FLAG_INTERLACE; |
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125 | if (connector->doublescan_allowed) |
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126 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; |
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127 | drm_mode_validate_flag(connector, mode_flags); |
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128 | |||
129 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
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130 | if (mode->status == MODE_OK) |
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131 | mode->status = connector_funcs->mode_valid(connector, |
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132 | mode); |
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133 | } |
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134 | |||
1179 | serge | 135 | prune: |
1123 | serge | 136 | drm_mode_prune_invalid(dev, &connector->modes, true); |
137 | |||
138 | if (list_empty(&connector->modes)) |
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139 | return 0; |
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140 | |||
141 | drm_mode_sort(&connector->modes); |
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142 | |||
1179 | serge | 143 | DRM_DEBUG_KMS("Probed modes for %s\n", |
144 | drm_get_connector_name(connector)); |
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1123 | serge | 145 | list_for_each_entry_safe(mode, t, &connector->modes, head) { |
146 | mode->vrefresh = drm_mode_vrefresh(mode); |
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147 | |||
148 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
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149 | drm_mode_debug_printmodeline(mode); |
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150 | } |
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151 | |||
152 | return count; |
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153 | } |
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154 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
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155 | |||
156 | int drm_helper_probe_connector_modes(struct drm_device *dev, uint32_t maxX, |
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157 | uint32_t maxY) |
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158 | { |
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159 | struct drm_connector *connector; |
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160 | int count = 0; |
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161 | |||
162 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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163 | count += drm_helper_probe_single_connector_modes(connector, |
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164 | maxX, maxY); |
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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_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 | |||
218 | /** |
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219 | * drm_disable_unused_functions - disable unused objects |
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220 | * @dev: DRM device |
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221 | * |
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222 | * LOCKING: |
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223 | * Caller must hold mode config lock. |
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224 | * |
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225 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
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226 | * by calling its dpms function, which should power it off. |
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227 | */ |
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228 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
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229 | { |
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230 | struct drm_encoder *encoder; |
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1179 | serge | 231 | struct drm_connector *connector; |
1123 | serge | 232 | struct drm_encoder_helper_funcs *encoder_funcs; |
233 | struct drm_crtc *crtc; |
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234 | |||
1179 | serge | 235 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
236 | if (!connector->encoder) |
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237 | continue; |
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238 | if (connector->status == connector_status_disconnected) |
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239 | connector->encoder = NULL; |
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240 | } |
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241 | |||
1123 | serge | 242 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
243 | encoder_funcs = encoder->helper_private; |
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1179 | serge | 244 | if (!drm_helper_encoder_in_use(encoder)) { |
245 | if (encoder_funcs->disable) |
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246 | (*encoder_funcs->disable)(encoder); |
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247 | else |
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1123 | serge | 248 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
1179 | serge | 249 | /* disconnector encoder from any connector */ |
250 | encoder->crtc = NULL; |
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251 | } |
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1123 | serge | 252 | } |
253 | |||
254 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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255 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
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256 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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257 | if (!crtc->enabled) { |
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258 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); |
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259 | crtc->fb = NULL; |
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260 | } |
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261 | } |
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262 | } |
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263 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
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264 | |||
265 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_connector *connector, int width, int height) |
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266 | { |
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267 | struct drm_display_mode *mode; |
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268 | |||
269 | list_for_each_entry(mode, &connector->modes, head) { |
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270 | if (drm_mode_width(mode) > width || |
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271 | drm_mode_height(mode) > height) |
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272 | continue; |
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273 | if (mode->type & DRM_MODE_TYPE_PREFERRED) |
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274 | return mode; |
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275 | } |
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276 | return NULL; |
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277 | } |
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278 | |||
1221 | serge | 279 | static bool drm_has_cmdline_mode(struct drm_connector *connector) |
280 | { |
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281 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; |
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282 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
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283 | |||
284 | if (!fb_help_conn) |
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285 | return false; |
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286 | |||
287 | cmdline_mode = &fb_help_conn->cmdline_mode; |
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288 | return cmdline_mode->specified; |
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289 | } |
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290 | |||
291 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_connector *connector, int width, int height) |
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292 | { |
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293 | struct drm_fb_helper_connector *fb_help_conn = connector->fb_helper_private; |
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294 | struct drm_fb_helper_cmdline_mode *cmdline_mode; |
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295 | struct drm_display_mode *mode = NULL; |
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296 | |||
297 | if (!fb_help_conn) |
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298 | return mode; |
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299 | |||
300 | cmdline_mode = &fb_help_conn->cmdline_mode; |
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301 | if (cmdline_mode->specified == false) |
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302 | return mode; |
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303 | |||
304 | /* attempt to find a matching mode in the list of modes |
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305 | * we have gotten so far, if not add a CVT mode that conforms |
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306 | */ |
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307 | if (cmdline_mode->rb || cmdline_mode->margins) |
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308 | goto create_mode; |
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309 | |||
310 | list_for_each_entry(mode, &connector->modes, head) { |
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311 | /* check width/height */ |
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312 | if (mode->hdisplay != cmdline_mode->xres || |
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313 | mode->vdisplay != cmdline_mode->yres) |
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314 | continue; |
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315 | |||
316 | if (cmdline_mode->refresh_specified) { |
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317 | if (mode->vrefresh != cmdline_mode->refresh) |
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318 | continue; |
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319 | } |
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320 | |||
321 | if (cmdline_mode->interlace) { |
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322 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) |
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323 | continue; |
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324 | } |
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325 | return mode; |
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326 | } |
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327 | |||
328 | create_mode: |
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329 | mode = drm_cvt_mode(connector->dev, cmdline_mode->xres, |
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330 | cmdline_mode->yres, |
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331 | cmdline_mode->refresh_specified ? cmdline_mode->refresh : 60, |
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332 | cmdline_mode->rb, cmdline_mode->interlace, |
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333 | cmdline_mode->margins); |
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1268 | serge | 334 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
1221 | serge | 335 | list_add(&mode->head, &connector->modes); |
336 | return mode; |
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337 | } |
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338 | |||
1123 | serge | 339 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
340 | { |
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341 | bool enable; |
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342 | |||
343 | if (strict) { |
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344 | enable = connector->status == connector_status_connected; |
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345 | } else { |
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346 | enable = connector->status != connector_status_disconnected; |
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347 | } |
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348 | return enable; |
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349 | } |
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350 | |||
351 | static void drm_enable_connectors(struct drm_device *dev, bool *enabled) |
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352 | { |
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353 | bool any_enabled = false; |
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354 | struct drm_connector *connector; |
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355 | int i = 0; |
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356 | |||
357 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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358 | enabled[i] = drm_connector_enabled(connector, true); |
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1179 | serge | 359 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
1123 | serge | 360 | enabled[i] ? "yes" : "no"); |
361 | any_enabled |= enabled[i]; |
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362 | i++; |
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363 | } |
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364 | |||
365 | if (any_enabled) |
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366 | return; |
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367 | |||
368 | i = 0; |
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369 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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370 | enabled[i] = drm_connector_enabled(connector, false); |
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371 | i++; |
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372 | } |
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373 | } |
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374 | |||
375 | static bool drm_target_preferred(struct drm_device *dev, |
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376 | struct drm_display_mode **modes, |
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377 | bool *enabled, int width, int height) |
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378 | { |
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379 | struct drm_connector *connector; |
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380 | int i = 0; |
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381 | |||
382 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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383 | |||
384 | if (enabled[i] == false) { |
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385 | i++; |
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386 | continue; |
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387 | } |
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388 | |||
1221 | serge | 389 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
390 | connector->base.id); |
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391 | |||
392 | /* got for command line mode first */ |
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393 | modes[i] = drm_pick_cmdline_mode(connector, width, height); |
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394 | if (!modes[i]) { |
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1179 | serge | 395 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", |
1123 | serge | 396 | connector->base.id); |
397 | modes[i] = drm_has_preferred_mode(connector, width, height); |
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1221 | serge | 398 | } |
1123 | serge | 399 | /* No preferred modes, pick one off the list */ |
400 | if (!modes[i] && !list_empty(&connector->modes)) { |
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401 | list_for_each_entry(modes[i], &connector->modes, head) |
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402 | break; |
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403 | } |
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1179 | serge | 404 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
1123 | serge | 405 | "none"); |
406 | i++; |
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407 | } |
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408 | return true; |
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409 | } |
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410 | |||
411 | static int drm_pick_crtcs(struct drm_device *dev, |
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412 | struct drm_crtc **best_crtcs, |
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413 | struct drm_display_mode **modes, |
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414 | int n, int width, int height) |
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415 | { |
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416 | int c, o; |
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417 | struct drm_connector *connector; |
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418 | struct drm_connector_helper_funcs *connector_funcs; |
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419 | struct drm_encoder *encoder; |
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420 | struct drm_crtc *best_crtc; |
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421 | int my_score, best_score, score; |
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422 | struct drm_crtc **crtcs, *crtc; |
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423 | |||
424 | if (n == dev->mode_config.num_connector) |
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425 | return 0; |
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426 | c = 0; |
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427 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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428 | if (c == n) |
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429 | break; |
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430 | c++; |
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431 | } |
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432 | |||
433 | best_crtcs[n] = NULL; |
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434 | best_crtc = NULL; |
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435 | best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height); |
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436 | if (modes[n] == NULL) |
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437 | return best_score; |
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438 | |||
439 | crtcs = kmalloc(dev->mode_config.num_connector * |
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440 | sizeof(struct drm_crtc *), GFP_KERNEL); |
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441 | if (!crtcs) |
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442 | return best_score; |
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443 | |||
444 | my_score = 1; |
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445 | if (connector->status == connector_status_connected) |
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446 | my_score++; |
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1221 | serge | 447 | if (drm_has_cmdline_mode(connector)) |
448 | my_score++; |
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1123 | serge | 449 | if (drm_has_preferred_mode(connector, width, height)) |
450 | my_score++; |
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451 | |||
452 | connector_funcs = connector->helper_private; |
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453 | encoder = connector_funcs->best_encoder(connector); |
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454 | if (!encoder) |
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455 | goto out; |
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456 | |||
457 | connector->encoder = encoder; |
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458 | |||
459 | /* select a crtc for this connector and then attempt to configure |
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460 | remaining connectors */ |
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461 | c = 0; |
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462 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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463 | |||
1179 | serge | 464 | if ((encoder->possible_crtcs & (1 << c)) == 0) { |
1123 | serge | 465 | c++; |
466 | continue; |
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467 | } |
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468 | |||
469 | for (o = 0; o < n; o++) |
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470 | if (best_crtcs[o] == crtc) |
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471 | break; |
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472 | |||
473 | if (o < n) { |
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474 | /* ignore cloning for now */ |
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475 | c++; |
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476 | continue; |
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477 | } |
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478 | |||
479 | crtcs[n] = crtc; |
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480 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *)); |
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481 | score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1, |
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482 | width, height); |
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483 | if (score > best_score) { |
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484 | best_crtc = crtc; |
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485 | best_score = score; |
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486 | memcpy(best_crtcs, crtcs, |
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487 | dev->mode_config.num_connector * |
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488 | sizeof(struct drm_crtc *)); |
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489 | } |
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490 | c++; |
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491 | } |
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492 | out: |
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493 | kfree(crtcs); |
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494 | return best_score; |
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495 | } |
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496 | |||
497 | static void drm_setup_crtcs(struct drm_device *dev) |
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498 | { |
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499 | struct drm_crtc **crtcs; |
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500 | struct drm_display_mode **modes; |
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501 | struct drm_encoder *encoder; |
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502 | struct drm_connector *connector; |
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503 | bool *enabled; |
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504 | int width, height; |
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505 | int i, ret; |
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506 | |||
1179 | serge | 507 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 508 | |
1182 | serge | 509 | width = dev->mode_config.max_width; |
510 | height = dev->mode_config.max_height; |
||
1123 | serge | 511 | |
512 | /* clean out all the encoder/crtc combos */ |
||
513 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
514 | encoder->crtc = NULL; |
||
515 | } |
||
516 | |||
517 | crtcs = kcalloc(dev->mode_config.num_connector, |
||
518 | sizeof(struct drm_crtc *), GFP_KERNEL); |
||
519 | modes = kcalloc(dev->mode_config.num_connector, |
||
520 | sizeof(struct drm_display_mode *), GFP_KERNEL); |
||
521 | enabled = kcalloc(dev->mode_config.num_connector, |
||
522 | sizeof(bool), GFP_KERNEL); |
||
523 | |||
524 | drm_enable_connectors(dev, enabled); |
||
525 | |||
526 | ret = drm_target_preferred(dev, modes, enabled, width, height); |
||
527 | if (!ret) |
||
528 | DRM_ERROR("Unable to find initial modes\n"); |
||
529 | |||
1179 | serge | 530 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
1123 | serge | 531 | |
532 | drm_pick_crtcs(dev, crtcs, modes, 0, width, height); |
||
533 | |||
534 | i = 0; |
||
535 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
536 | struct drm_display_mode *mode = modes[i]; |
||
537 | struct drm_crtc *crtc = crtcs[i]; |
||
538 | |||
539 | if (connector->encoder == NULL) { |
||
540 | i++; |
||
541 | continue; |
||
542 | } |
||
543 | |||
544 | if (mode && crtc) { |
||
1179 | serge | 545 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
1123 | serge | 546 | mode->name, crtc->base.id); |
547 | crtc->desired_mode = mode; |
||
548 | connector->encoder->crtc = crtc; |
||
1179 | serge | 549 | } else { |
1123 | serge | 550 | connector->encoder->crtc = NULL; |
1179 | serge | 551 | connector->encoder = NULL; |
552 | } |
||
1123 | serge | 553 | i++; |
554 | } |
||
555 | |||
556 | kfree(crtcs); |
||
557 | kfree(modes); |
||
558 | kfree(enabled); |
||
559 | } |
||
560 | |||
561 | /** |
||
562 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? |
||
563 | * @encoder: encoder to test |
||
564 | * @crtc: crtc to test |
||
565 | * |
||
566 | * Return false if @encoder can't be driven by @crtc, true otherwise. |
||
567 | */ |
||
568 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, |
||
569 | struct drm_crtc *crtc) |
||
570 | { |
||
571 | struct drm_device *dev; |
||
572 | struct drm_crtc *tmp; |
||
573 | int crtc_mask = 1; |
||
574 | |||
1125 | serge | 575 | // WARN(!crtc, "checking null crtc?"); |
1123 | serge | 576 | |
577 | dev = crtc->dev; |
||
578 | |||
579 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { |
||
580 | if (tmp == crtc) |
||
581 | break; |
||
582 | crtc_mask <<= 1; |
||
583 | } |
||
584 | |||
585 | if (encoder->possible_crtcs & crtc_mask) |
||
586 | return true; |
||
587 | return false; |
||
588 | } |
||
589 | |||
590 | /* |
||
591 | * Check the CRTC we're going to map each output to vs. its current |
||
592 | * CRTC. If they don't match, we have to disable the output and the CRTC |
||
593 | * since the driver will have to re-route things. |
||
594 | */ |
||
595 | static void |
||
596 | drm_crtc_prepare_encoders(struct drm_device *dev) |
||
597 | { |
||
598 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
599 | struct drm_encoder *encoder; |
||
600 | |||
601 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
602 | encoder_funcs = encoder->helper_private; |
||
603 | /* Disable unused encoders */ |
||
604 | if (encoder->crtc == NULL) |
||
605 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
||
606 | /* Disable encoders whose CRTC is about to change */ |
||
607 | if (encoder_funcs->get_crtc && |
||
608 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
||
609 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
||
610 | } |
||
611 | } |
||
612 | |||
613 | /** |
||
614 | * drm_crtc_set_mode - set a mode |
||
615 | * @crtc: CRTC to program |
||
616 | * @mode: mode to use |
||
617 | * @x: width of mode |
||
618 | * @y: height of mode |
||
619 | * |
||
620 | * LOCKING: |
||
621 | * Caller must hold mode config lock. |
||
622 | * |
||
623 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
||
624 | * to fixup or reject the mode prior to trying to set it. |
||
625 | * |
||
626 | * RETURNS: |
||
627 | * True if the mode was set successfully, or false otherwise. |
||
628 | */ |
||
629 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
||
630 | struct drm_display_mode *mode, |
||
631 | int x, int y, |
||
632 | struct drm_framebuffer *old_fb) |
||
633 | { |
||
634 | struct drm_device *dev = crtc->dev; |
||
635 | struct drm_display_mode *adjusted_mode, saved_mode; |
||
636 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
637 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
638 | int saved_x, saved_y; |
||
639 | struct drm_encoder *encoder; |
||
640 | bool ret = true; |
||
641 | |||
642 | adjusted_mode = drm_mode_duplicate(dev, mode); |
||
643 | |||
644 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
||
645 | |||
646 | if (!crtc->enabled) |
||
647 | return true; |
||
648 | |||
649 | saved_mode = crtc->mode; |
||
650 | saved_x = crtc->x; |
||
651 | saved_y = crtc->y; |
||
652 | |||
653 | /* Update crtc values up front so the driver can rely on them for mode |
||
654 | * setting. |
||
655 | */ |
||
656 | crtc->mode = *mode; |
||
657 | crtc->x = x; |
||
658 | crtc->y = y; |
||
659 | |||
660 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
||
661 | * adjust it according to limitations or connector properties, and also |
||
662 | * a chance to reject the mode entirely. |
||
663 | */ |
||
664 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
665 | |||
666 | if (encoder->crtc != crtc) |
||
667 | continue; |
||
668 | encoder_funcs = encoder->helper_private; |
||
669 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
||
670 | adjusted_mode))) { |
||
671 | goto done; |
||
672 | } |
||
673 | } |
||
674 | |||
675 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
||
676 | goto done; |
||
677 | } |
||
678 | |||
679 | /* Prepare the encoders and CRTCs before setting the mode. */ |
||
680 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
681 | |||
682 | if (encoder->crtc != crtc) |
||
683 | continue; |
||
684 | encoder_funcs = encoder->helper_private; |
||
685 | /* Disable the encoders as the first thing we do. */ |
||
686 | encoder_funcs->prepare(encoder); |
||
687 | } |
||
688 | |||
689 | drm_crtc_prepare_encoders(dev); |
||
690 | |||
691 | crtc_funcs->prepare(crtc); |
||
692 | |||
693 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
||
694 | * on the DPLL. |
||
695 | */ |
||
696 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
||
697 | if (!ret) |
||
698 | goto done; |
||
699 | |||
700 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
701 | |||
702 | if (encoder->crtc != crtc) |
||
703 | continue; |
||
704 | |||
705 | DRM_INFO("%s: set mode %s %x\n", drm_get_encoder_name(encoder), |
||
706 | mode->name, mode->base.id); |
||
707 | encoder_funcs = encoder->helper_private; |
||
708 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
||
709 | } |
||
710 | |||
711 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
||
712 | crtc_funcs->commit(crtc); |
||
713 | |||
714 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
715 | |||
716 | if (encoder->crtc != crtc) |
||
717 | continue; |
||
718 | |||
719 | encoder_funcs = encoder->helper_private; |
||
720 | encoder_funcs->commit(encoder); |
||
721 | |||
722 | } |
||
723 | |||
724 | /* XXX free adjustedmode */ |
||
725 | drm_mode_destroy(dev, adjusted_mode); |
||
726 | /* FIXME: add subpixel order */ |
||
727 | done: |
||
728 | if (!ret) { |
||
729 | crtc->mode = saved_mode; |
||
730 | crtc->x = saved_x; |
||
731 | crtc->y = saved_y; |
||
732 | } |
||
1179 | serge | 733 | |
1123 | serge | 734 | return ret; |
735 | } |
||
736 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
||
737 | |||
738 | |||
739 | /** |
||
740 | * drm_crtc_helper_set_config - set a new config from userspace |
||
741 | * @crtc: CRTC to setup |
||
742 | * @crtc_info: user provided configuration |
||
743 | * @new_mode: new mode to set |
||
744 | * @connector_set: set of connectors for the new config |
||
745 | * @fb: new framebuffer |
||
746 | * |
||
747 | * LOCKING: |
||
748 | * Caller must hold mode config lock. |
||
749 | * |
||
750 | * Setup a new configuration, provided by the user in @crtc_info, and enable |
||
751 | * it. |
||
752 | * |
||
753 | * RETURNS: |
||
754 | * Zero. (FIXME) |
||
755 | */ |
||
756 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
||
757 | { |
||
758 | struct drm_device *dev; |
||
1179 | serge | 759 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
760 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
||
1123 | serge | 761 | struct drm_framebuffer *old_fb = NULL; |
1179 | serge | 762 | bool mode_changed = false; /* if true do a full mode set */ |
763 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
||
764 | struct drm_connector *save_connectors, *connector; |
||
1123 | serge | 765 | int count = 0, ro, fail = 0; |
766 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
767 | int ret = 0; |
||
768 | |||
1179 | serge | 769 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 770 | |
771 | if (!set) |
||
772 | return -EINVAL; |
||
773 | |||
774 | if (!set->crtc) |
||
775 | return -EINVAL; |
||
776 | |||
777 | if (!set->crtc->helper_private) |
||
778 | return -EINVAL; |
||
779 | |||
780 | crtc_funcs = set->crtc->helper_private; |
||
781 | |||
1179 | serge | 782 | DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:" |
783 | " %d (x, y) (%i, %i)\n", |
||
1123 | serge | 784 | set->crtc, set->crtc->base.id, set->fb, set->connectors, |
785 | (int)set->num_connectors, set->x, set->y); |
||
786 | |||
787 | dev = set->crtc->dev; |
||
788 | |||
1179 | serge | 789 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
790 | * connector data. */ |
||
791 | save_crtcs = kzalloc(dev->mode_config.num_crtc * |
||
792 | sizeof(struct drm_crtc), GFP_KERNEL); |
||
1123 | serge | 793 | if (!save_crtcs) |
794 | return -ENOMEM; |
||
795 | |||
1179 | serge | 796 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
797 | sizeof(struct drm_encoder), GFP_KERNEL); |
||
1123 | serge | 798 | if (!save_encoders) { |
799 | kfree(save_crtcs); |
||
800 | return -ENOMEM; |
||
801 | } |
||
802 | |||
1179 | serge | 803 | save_connectors = kzalloc(dev->mode_config.num_connector * |
804 | sizeof(struct drm_connector), GFP_KERNEL); |
||
805 | if (!save_connectors) { |
||
806 | kfree(save_crtcs); |
||
807 | kfree(save_encoders); |
||
808 | return -ENOMEM; |
||
809 | } |
||
810 | |||
811 | /* Copy data. Note that driver private data is not affected. |
||
812 | * Should anything bad happen only the expected state is |
||
813 | * restored, not the drivers personal bookkeeping. |
||
814 | */ |
||
815 | count = 0; |
||
816 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
817 | save_crtcs[count++] = *crtc; |
||
818 | } |
||
819 | |||
820 | count = 0; |
||
821 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
822 | save_encoders[count++] = *encoder; |
||
823 | } |
||
824 | |||
825 | count = 0; |
||
826 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
827 | save_connectors[count++] = *connector; |
||
828 | } |
||
829 | |||
1123 | serge | 830 | /* We should be able to check here if the fb has the same properties |
831 | * and then just flip_or_move it */ |
||
832 | if (set->crtc->fb != set->fb) { |
||
833 | /* If we have no fb then treat it as a full mode set */ |
||
834 | if (set->crtc->fb == NULL) { |
||
1179 | serge | 835 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
1123 | serge | 836 | mode_changed = true; |
1179 | serge | 837 | } else if (set->fb == NULL) { |
838 | mode_changed = true; |
||
1123 | serge | 839 | } else if ((set->fb->bits_per_pixel != |
840 | set->crtc->fb->bits_per_pixel) || |
||
841 | set->fb->depth != set->crtc->fb->depth) |
||
842 | fb_changed = true; |
||
843 | else |
||
844 | fb_changed = true; |
||
845 | } |
||
846 | |||
847 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
||
848 | fb_changed = true; |
||
849 | |||
850 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
||
1179 | serge | 851 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
1123 | serge | 852 | drm_mode_debug_printmodeline(&set->crtc->mode); |
853 | drm_mode_debug_printmodeline(set->mode); |
||
854 | mode_changed = true; |
||
855 | } |
||
856 | |||
857 | /* a) traverse passed in connector list and get encoders for them */ |
||
858 | count = 0; |
||
859 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
860 | struct drm_connector_helper_funcs *connector_funcs = |
||
861 | connector->helper_private; |
||
862 | new_encoder = connector->encoder; |
||
863 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
864 | if (set->connectors[ro] == connector) { |
||
865 | new_encoder = connector_funcs->best_encoder(connector); |
||
866 | /* if we can't get an encoder for a connector |
||
867 | we are setting now - then fail */ |
||
868 | if (new_encoder == NULL) |
||
869 | /* don't break so fail path works correct */ |
||
870 | fail = 1; |
||
871 | break; |
||
872 | } |
||
873 | } |
||
874 | |||
875 | if (new_encoder != connector->encoder) { |
||
1179 | serge | 876 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
1123 | serge | 877 | mode_changed = true; |
1179 | serge | 878 | /* If the encoder is reused for another connector, then |
879 | * the appropriate crtc will be set later. |
||
880 | */ |
||
881 | if (connector->encoder) |
||
882 | connector->encoder->crtc = NULL; |
||
1123 | serge | 883 | connector->encoder = new_encoder; |
884 | } |
||
885 | } |
||
886 | |||
887 | if (fail) { |
||
888 | ret = -EINVAL; |
||
1179 | serge | 889 | goto fail; |
1123 | serge | 890 | } |
891 | |||
892 | count = 0; |
||
893 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
894 | if (!connector->encoder) |
||
895 | continue; |
||
896 | |||
897 | if (connector->encoder->crtc == set->crtc) |
||
898 | new_crtc = NULL; |
||
899 | else |
||
900 | new_crtc = connector->encoder->crtc; |
||
901 | |||
902 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
903 | if (set->connectors[ro] == connector) |
||
904 | new_crtc = set->crtc; |
||
905 | } |
||
906 | |||
907 | /* Make sure the new CRTC will work with the encoder */ |
||
908 | if (new_crtc && |
||
909 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
||
910 | ret = -EINVAL; |
||
1179 | serge | 911 | goto fail; |
1123 | serge | 912 | } |
913 | if (new_crtc != connector->encoder->crtc) { |
||
1179 | serge | 914 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
1123 | serge | 915 | mode_changed = true; |
916 | connector->encoder->crtc = new_crtc; |
||
917 | } |
||
1179 | serge | 918 | DRM_DEBUG_KMS("setting connector %d crtc to %p\n", |
1123 | serge | 919 | connector->base.id, new_crtc); |
920 | } |
||
921 | |||
922 | /* mode_set_base is not a required function */ |
||
923 | if (fb_changed && !crtc_funcs->mode_set_base) |
||
924 | mode_changed = true; |
||
925 | |||
926 | if (mode_changed) { |
||
927 | old_fb = set->crtc->fb; |
||
928 | set->crtc->fb = set->fb; |
||
929 | set->crtc->enabled = (set->mode != NULL); |
||
930 | if (set->mode != NULL) { |
||
1179 | serge | 931 | DRM_DEBUG_KMS("attempting to set mode from" |
932 | " userspace\n"); |
||
1123 | serge | 933 | drm_mode_debug_printmodeline(set->mode); |
934 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
||
935 | set->x, set->y, |
||
936 | old_fb)) { |
||
937 | DRM_ERROR("failed to set mode on crtc %p\n", |
||
938 | set->crtc); |
||
939 | ret = -EINVAL; |
||
1179 | serge | 940 | goto fail; |
1123 | serge | 941 | } |
942 | /* TODO are these needed? */ |
||
943 | set->crtc->desired_x = set->x; |
||
944 | set->crtc->desired_y = set->y; |
||
945 | set->crtc->desired_mode = set->mode; |
||
946 | } |
||
947 | drm_helper_disable_unused_functions(dev); |
||
948 | } else if (fb_changed) { |
||
1179 | serge | 949 | set->crtc->x = set->x; |
950 | set->crtc->y = set->y; |
||
951 | |||
1123 | serge | 952 | old_fb = set->crtc->fb; |
953 | if (set->crtc->fb != set->fb) |
||
954 | set->crtc->fb = set->fb; |
||
955 | ret = crtc_funcs->mode_set_base(set->crtc, |
||
956 | set->x, set->y, old_fb); |
||
957 | if (ret != 0) |
||
1179 | serge | 958 | goto fail; |
1123 | serge | 959 | } |
960 | |||
1179 | serge | 961 | kfree(save_connectors); |
1123 | serge | 962 | kfree(save_encoders); |
963 | kfree(save_crtcs); |
||
964 | return 0; |
||
965 | |||
1179 | serge | 966 | fail: |
967 | /* Restore all previous data. */ |
||
1123 | serge | 968 | count = 0; |
1179 | serge | 969 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
970 | *crtc = save_crtcs[count++]; |
||
971 | } |
||
1123 | serge | 972 | |
1179 | serge | 973 | count = 0; |
974 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
975 | *encoder = save_encoders[count++]; |
||
1123 | serge | 976 | } |
1179 | serge | 977 | |
1123 | serge | 978 | count = 0; |
979 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1179 | serge | 980 | *connector = save_connectors[count++]; |
1123 | serge | 981 | } |
1179 | serge | 982 | |
983 | kfree(save_connectors); |
||
1123 | serge | 984 | kfree(save_encoders); |
1179 | serge | 985 | kfree(save_crtcs); |
1123 | serge | 986 | return ret; |
987 | } |
||
988 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
||
989 | |||
990 | bool drm_helper_plugged_event(struct drm_device *dev) |
||
991 | { |
||
1179 | serge | 992 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 993 | |
994 | drm_helper_probe_connector_modes(dev, dev->mode_config.max_width, |
||
995 | dev->mode_config.max_height); |
||
996 | |||
997 | drm_setup_crtcs(dev); |
||
998 | |||
999 | /* alert the driver fb layer */ |
||
1126 | serge | 1000 | dev->mode_config.funcs->fb_changed(dev); |
1123 | serge | 1001 | |
1002 | /* FIXME: send hotplug event */ |
||
1003 | return true; |
||
1004 | } |
||
1005 | /** |
||
1006 | * drm_initial_config - setup a sane initial connector configuration |
||
1007 | * @dev: DRM device |
||
1008 | * |
||
1009 | * LOCKING: |
||
1010 | * Called at init time, must take mode config lock. |
||
1011 | * |
||
1012 | * Scan the CRTCs and connectors and try to put together an initial setup. |
||
1013 | * At the moment, this is a cloned configuration across all heads with |
||
1014 | * a new framebuffer object as the backing store. |
||
1015 | * |
||
1016 | * RETURNS: |
||
1017 | * Zero if everything went ok, nonzero otherwise. |
||
1018 | */ |
||
1019 | bool drm_helper_initial_config(struct drm_device *dev) |
||
1020 | { |
||
1021 | int count = 0; |
||
1022 | |||
1023 | count = drm_helper_probe_connector_modes(dev, |
||
1024 | dev->mode_config.max_width, |
||
1025 | dev->mode_config.max_height); |
||
1026 | |||
1027 | /* |
||
1179 | serge | 1028 | * we shouldn't end up with no modes here. |
1123 | serge | 1029 | */ |
1179 | serge | 1030 | // WARN(!count, "Connected connector with 0 modes\n"); |
1123 | serge | 1031 | |
1032 | drm_setup_crtcs(dev); |
||
1033 | |||
1179 | serge | 1034 | /* alert the driver fb layer */ |
1126 | serge | 1035 | dev->mode_config.funcs->fb_changed(dev); |
1036 | |||
1123 | serge | 1037 | return 0; |
1038 | } |
||
1039 | EXPORT_SYMBOL(drm_helper_initial_config); |
||
1040 | |||
1041 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
||
1042 | { |
||
1043 | int dpms = DRM_MODE_DPMS_OFF; |
||
1044 | struct drm_connector *connector; |
||
1045 | struct drm_device *dev = encoder->dev; |
||
1046 | |||
1047 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
1048 | if (connector->encoder == encoder) |
||
1049 | if (connector->dpms < dpms) |
||
1050 | dpms = connector->dpms; |
||
1051 | return dpms; |
||
1052 | } |
||
1053 | |||
1054 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
||
1055 | { |
||
1056 | int dpms = DRM_MODE_DPMS_OFF; |
||
1057 | struct drm_connector *connector; |
||
1058 | struct drm_device *dev = crtc->dev; |
||
1059 | |||
1060 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
1061 | if (connector->encoder && connector->encoder->crtc == crtc) |
||
1062 | if (connector->dpms < dpms) |
||
1063 | dpms = connector->dpms; |
||
1064 | return dpms; |
||
1065 | } |
||
1066 | |||
1067 | /** |
||
1068 | * drm_helper_connector_dpms |
||
1069 | * @connector affected connector |
||
1070 | * @mode DPMS mode |
||
1071 | * |
||
1072 | * Calls the low-level connector DPMS function, then |
||
1073 | * calls appropriate encoder and crtc DPMS functions as well |
||
1074 | */ |
||
1075 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
||
1076 | { |
||
1077 | struct drm_encoder *encoder = connector->encoder; |
||
1078 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
||
1079 | int old_dpms; |
||
1080 | |||
1081 | if (mode == connector->dpms) |
||
1082 | return; |
||
1083 | |||
1084 | old_dpms = connector->dpms; |
||
1085 | connector->dpms = mode; |
||
1086 | |||
1087 | /* from off to on, do crtc then encoder */ |
||
1088 | if (mode < old_dpms) { |
||
1089 | if (crtc) { |
||
1090 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
1091 | if (crtc_funcs->dpms) |
||
1092 | (*crtc_funcs->dpms) (crtc, |
||
1093 | drm_helper_choose_crtc_dpms(crtc)); |
||
1094 | } |
||
1095 | if (encoder) { |
||
1096 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
1097 | if (encoder_funcs->dpms) |
||
1098 | (*encoder_funcs->dpms) (encoder, |
||
1099 | drm_helper_choose_encoder_dpms(encoder)); |
||
1100 | } |
||
1101 | } |
||
1102 | |||
1103 | /* from on to off, do encoder then crtc */ |
||
1104 | if (mode > old_dpms) { |
||
1105 | if (encoder) { |
||
1106 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
1107 | if (encoder_funcs->dpms) |
||
1108 | (*encoder_funcs->dpms) (encoder, |
||
1109 | drm_helper_choose_encoder_dpms(encoder)); |
||
1110 | } |
||
1111 | if (crtc) { |
||
1112 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
1113 | if (crtc_funcs->dpms) |
||
1114 | (*crtc_funcs->dpms) (crtc, |
||
1115 | drm_helper_choose_crtc_dpms(crtc)); |
||
1116 | } |
||
1117 | } |
||
1118 | |||
1119 | return; |
||
1120 | } |
||
1121 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
||
1122 | |||
1123 | /** |
||
1124 | * drm_hotplug_stage_two |
||
1125 | * @dev DRM device |
||
1126 | * @connector hotpluged connector |
||
1127 | * |
||
1128 | * LOCKING. |
||
1129 | * Caller must hold mode config lock, function might grab struct lock. |
||
1130 | * |
||
1131 | * Stage two of a hotplug. |
||
1132 | * |
||
1133 | * RETURNS: |
||
1134 | * Zero on success, errno on failure. |
||
1135 | */ |
||
1136 | int drm_helper_hotplug_stage_two(struct drm_device *dev) |
||
1137 | { |
||
1138 | drm_helper_plugged_event(dev); |
||
1139 | |||
1140 | return 0; |
||
1141 | } |
||
1142 | EXPORT_SYMBOL(drm_helper_hotplug_stage_two); |
||
1143 | |||
1144 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
||
1145 | struct drm_mode_fb_cmd *mode_cmd) |
||
1146 | { |
||
1147 | fb->width = mode_cmd->width; |
||
1148 | fb->height = mode_cmd->height; |
||
1149 | fb->pitch = mode_cmd->pitch; |
||
1150 | fb->bits_per_pixel = mode_cmd->bpp; |
||
1151 | fb->depth = mode_cmd->depth; |
||
1152 | |||
1153 | return 0; |
||
1154 | } |
||
1155 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
||
1156 | |||
1157 | int drm_helper_resume_force_mode(struct drm_device *dev) |
||
1158 | { |
||
1159 | struct drm_crtc *crtc; |
||
1160 | int ret; |
||
1161 | |||
1162 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
1163 | |||
1179 | serge | 1164 | if (!crtc->enabled) |
1165 | continue; |
||
1123 | serge | 1166 | |
1179 | serge | 1167 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1123 | serge | 1168 | crtc->x, crtc->y, crtc->fb); |
1169 | |||
1170 | if (ret == false) |
||
1171 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
||
1172 | } |
||
1179 | serge | 1173 | /* disable the unused connectors while restoring the modesetting */ |
1174 | drm_helper_disable_unused_functions(dev); |
||
1123 | serge | 1175 | return 0; |
1176 | } |
||
1177 | EXPORT_SYMBOL(drm_helper_resume_force_mode);>>>>>=><=>>>><> |