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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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334 | list_add(&mode->head, &connector->modes); |
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335 | return mode; |
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336 | } |
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337 | |||
1123 | serge | 338 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
339 | { |
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340 | bool enable; |
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341 | |||
342 | if (strict) { |
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343 | enable = connector->status == connector_status_connected; |
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344 | } else { |
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345 | enable = connector->status != connector_status_disconnected; |
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346 | } |
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347 | return enable; |
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348 | } |
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349 | |||
350 | static void drm_enable_connectors(struct drm_device *dev, bool *enabled) |
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351 | { |
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352 | bool any_enabled = false; |
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353 | struct drm_connector *connector; |
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354 | int i = 0; |
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355 | |||
356 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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357 | enabled[i] = drm_connector_enabled(connector, true); |
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1179 | serge | 358 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
1123 | serge | 359 | enabled[i] ? "yes" : "no"); |
360 | any_enabled |= enabled[i]; |
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361 | i++; |
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362 | } |
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363 | |||
364 | if (any_enabled) |
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365 | return; |
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366 | |||
367 | i = 0; |
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368 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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369 | enabled[i] = drm_connector_enabled(connector, false); |
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370 | i++; |
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371 | } |
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372 | } |
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373 | |||
374 | static bool drm_target_preferred(struct drm_device *dev, |
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375 | struct drm_display_mode **modes, |
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376 | bool *enabled, int width, int height) |
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377 | { |
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378 | struct drm_connector *connector; |
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379 | int i = 0; |
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380 | |||
381 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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382 | |||
383 | if (enabled[i] == false) { |
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384 | i++; |
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385 | continue; |
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386 | } |
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387 | |||
1221 | serge | 388 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
389 | connector->base.id); |
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390 | |||
391 | /* got for command line mode first */ |
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392 | modes[i] = drm_pick_cmdline_mode(connector, width, height); |
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393 | if (!modes[i]) { |
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1179 | serge | 394 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", |
1123 | serge | 395 | connector->base.id); |
396 | modes[i] = drm_has_preferred_mode(connector, width, height); |
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1221 | serge | 397 | } |
1123 | serge | 398 | /* No preferred modes, pick one off the list */ |
399 | if (!modes[i] && !list_empty(&connector->modes)) { |
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400 | list_for_each_entry(modes[i], &connector->modes, head) |
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401 | break; |
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402 | } |
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1179 | serge | 403 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
1123 | serge | 404 | "none"); |
405 | i++; |
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406 | } |
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407 | return true; |
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408 | } |
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409 | |||
410 | static int drm_pick_crtcs(struct drm_device *dev, |
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411 | struct drm_crtc **best_crtcs, |
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412 | struct drm_display_mode **modes, |
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413 | int n, int width, int height) |
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414 | { |
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415 | int c, o; |
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416 | struct drm_connector *connector; |
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417 | struct drm_connector_helper_funcs *connector_funcs; |
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418 | struct drm_encoder *encoder; |
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419 | struct drm_crtc *best_crtc; |
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420 | int my_score, best_score, score; |
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421 | struct drm_crtc **crtcs, *crtc; |
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422 | |||
423 | if (n == dev->mode_config.num_connector) |
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424 | return 0; |
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425 | c = 0; |
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426 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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427 | if (c == n) |
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428 | break; |
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429 | c++; |
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430 | } |
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431 | |||
432 | best_crtcs[n] = NULL; |
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433 | best_crtc = NULL; |
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434 | best_score = drm_pick_crtcs(dev, best_crtcs, modes, n+1, width, height); |
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435 | if (modes[n] == NULL) |
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436 | return best_score; |
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437 | |||
438 | crtcs = kmalloc(dev->mode_config.num_connector * |
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439 | sizeof(struct drm_crtc *), GFP_KERNEL); |
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440 | if (!crtcs) |
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441 | return best_score; |
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442 | |||
443 | my_score = 1; |
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444 | if (connector->status == connector_status_connected) |
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445 | my_score++; |
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1221 | serge | 446 | if (drm_has_cmdline_mode(connector)) |
447 | my_score++; |
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1123 | serge | 448 | if (drm_has_preferred_mode(connector, width, height)) |
449 | my_score++; |
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450 | |||
451 | connector_funcs = connector->helper_private; |
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452 | encoder = connector_funcs->best_encoder(connector); |
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453 | if (!encoder) |
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454 | goto out; |
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455 | |||
456 | connector->encoder = encoder; |
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457 | |||
458 | /* select a crtc for this connector and then attempt to configure |
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459 | remaining connectors */ |
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460 | c = 0; |
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461 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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462 | |||
1179 | serge | 463 | if ((encoder->possible_crtcs & (1 << c)) == 0) { |
1123 | serge | 464 | c++; |
465 | continue; |
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466 | } |
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467 | |||
468 | for (o = 0; o < n; o++) |
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469 | if (best_crtcs[o] == crtc) |
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470 | break; |
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471 | |||
472 | if (o < n) { |
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473 | /* ignore cloning for now */ |
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474 | c++; |
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475 | continue; |
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476 | } |
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477 | |||
478 | crtcs[n] = crtc; |
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479 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_crtc *)); |
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480 | score = my_score + drm_pick_crtcs(dev, crtcs, modes, n + 1, |
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481 | width, height); |
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482 | if (score > best_score) { |
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483 | best_crtc = crtc; |
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484 | best_score = score; |
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485 | memcpy(best_crtcs, crtcs, |
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486 | dev->mode_config.num_connector * |
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487 | sizeof(struct drm_crtc *)); |
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488 | } |
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489 | c++; |
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490 | } |
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491 | out: |
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492 | kfree(crtcs); |
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493 | return best_score; |
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494 | } |
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495 | |||
496 | static void drm_setup_crtcs(struct drm_device *dev) |
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497 | { |
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498 | struct drm_crtc **crtcs; |
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499 | struct drm_display_mode **modes; |
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500 | struct drm_encoder *encoder; |
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501 | struct drm_connector *connector; |
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502 | bool *enabled; |
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503 | int width, height; |
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504 | int i, ret; |
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505 | |||
1179 | serge | 506 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 507 | |
1182 | serge | 508 | width = dev->mode_config.max_width; |
509 | height = dev->mode_config.max_height; |
||
1123 | serge | 510 | |
511 | /* clean out all the encoder/crtc combos */ |
||
512 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
513 | encoder->crtc = NULL; |
||
514 | } |
||
515 | |||
516 | crtcs = kcalloc(dev->mode_config.num_connector, |
||
517 | sizeof(struct drm_crtc *), GFP_KERNEL); |
||
518 | modes = kcalloc(dev->mode_config.num_connector, |
||
519 | sizeof(struct drm_display_mode *), GFP_KERNEL); |
||
520 | enabled = kcalloc(dev->mode_config.num_connector, |
||
521 | sizeof(bool), GFP_KERNEL); |
||
522 | |||
523 | drm_enable_connectors(dev, enabled); |
||
524 | |||
525 | ret = drm_target_preferred(dev, modes, enabled, width, height); |
||
526 | if (!ret) |
||
527 | DRM_ERROR("Unable to find initial modes\n"); |
||
528 | |||
1179 | serge | 529 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", width, height); |
1123 | serge | 530 | |
531 | drm_pick_crtcs(dev, crtcs, modes, 0, width, height); |
||
532 | |||
533 | i = 0; |
||
534 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
535 | struct drm_display_mode *mode = modes[i]; |
||
536 | struct drm_crtc *crtc = crtcs[i]; |
||
537 | |||
538 | if (connector->encoder == NULL) { |
||
539 | i++; |
||
540 | continue; |
||
541 | } |
||
542 | |||
543 | if (mode && crtc) { |
||
1179 | serge | 544 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
1123 | serge | 545 | mode->name, crtc->base.id); |
546 | crtc->desired_mode = mode; |
||
547 | connector->encoder->crtc = crtc; |
||
1179 | serge | 548 | } else { |
1123 | serge | 549 | connector->encoder->crtc = NULL; |
1179 | serge | 550 | connector->encoder = NULL; |
551 | } |
||
1123 | serge | 552 | i++; |
553 | } |
||
554 | |||
555 | kfree(crtcs); |
||
556 | kfree(modes); |
||
557 | kfree(enabled); |
||
558 | } |
||
559 | |||
560 | /** |
||
561 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? |
||
562 | * @encoder: encoder to test |
||
563 | * @crtc: crtc to test |
||
564 | * |
||
565 | * Return false if @encoder can't be driven by @crtc, true otherwise. |
||
566 | */ |
||
567 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, |
||
568 | struct drm_crtc *crtc) |
||
569 | { |
||
570 | struct drm_device *dev; |
||
571 | struct drm_crtc *tmp; |
||
572 | int crtc_mask = 1; |
||
573 | |||
1125 | serge | 574 | // WARN(!crtc, "checking null crtc?"); |
1123 | serge | 575 | |
576 | dev = crtc->dev; |
||
577 | |||
578 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { |
||
579 | if (tmp == crtc) |
||
580 | break; |
||
581 | crtc_mask <<= 1; |
||
582 | } |
||
583 | |||
584 | if (encoder->possible_crtcs & crtc_mask) |
||
585 | return true; |
||
586 | return false; |
||
587 | } |
||
588 | |||
589 | /* |
||
590 | * Check the CRTC we're going to map each output to vs. its current |
||
591 | * CRTC. If they don't match, we have to disable the output and the CRTC |
||
592 | * since the driver will have to re-route things. |
||
593 | */ |
||
594 | static void |
||
595 | drm_crtc_prepare_encoders(struct drm_device *dev) |
||
596 | { |
||
597 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
598 | struct drm_encoder *encoder; |
||
599 | |||
600 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
601 | encoder_funcs = encoder->helper_private; |
||
602 | /* Disable unused encoders */ |
||
603 | if (encoder->crtc == NULL) |
||
604 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
||
605 | /* Disable encoders whose CRTC is about to change */ |
||
606 | if (encoder_funcs->get_crtc && |
||
607 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
||
608 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
||
609 | } |
||
610 | } |
||
611 | |||
612 | /** |
||
613 | * drm_crtc_set_mode - set a mode |
||
614 | * @crtc: CRTC to program |
||
615 | * @mode: mode to use |
||
616 | * @x: width of mode |
||
617 | * @y: height of mode |
||
618 | * |
||
619 | * LOCKING: |
||
620 | * Caller must hold mode config lock. |
||
621 | * |
||
622 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
||
623 | * to fixup or reject the mode prior to trying to set it. |
||
624 | * |
||
625 | * RETURNS: |
||
626 | * True if the mode was set successfully, or false otherwise. |
||
627 | */ |
||
628 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
||
629 | struct drm_display_mode *mode, |
||
630 | int x, int y, |
||
631 | struct drm_framebuffer *old_fb) |
||
632 | { |
||
633 | struct drm_device *dev = crtc->dev; |
||
634 | struct drm_display_mode *adjusted_mode, saved_mode; |
||
635 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
636 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
637 | int saved_x, saved_y; |
||
638 | struct drm_encoder *encoder; |
||
639 | bool ret = true; |
||
640 | |||
641 | adjusted_mode = drm_mode_duplicate(dev, mode); |
||
642 | |||
643 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
||
644 | |||
645 | if (!crtc->enabled) |
||
646 | return true; |
||
647 | |||
648 | saved_mode = crtc->mode; |
||
649 | saved_x = crtc->x; |
||
650 | saved_y = crtc->y; |
||
651 | |||
652 | /* Update crtc values up front so the driver can rely on them for mode |
||
653 | * setting. |
||
654 | */ |
||
655 | crtc->mode = *mode; |
||
656 | crtc->x = x; |
||
657 | crtc->y = y; |
||
658 | |||
659 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
||
660 | * adjust it according to limitations or connector properties, and also |
||
661 | * a chance to reject the mode entirely. |
||
662 | */ |
||
663 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
664 | |||
665 | if (encoder->crtc != crtc) |
||
666 | continue; |
||
667 | encoder_funcs = encoder->helper_private; |
||
668 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
||
669 | adjusted_mode))) { |
||
670 | goto done; |
||
671 | } |
||
672 | } |
||
673 | |||
674 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
||
675 | goto done; |
||
676 | } |
||
677 | |||
678 | /* Prepare the encoders and CRTCs before setting the mode. */ |
||
679 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
680 | |||
681 | if (encoder->crtc != crtc) |
||
682 | continue; |
||
683 | encoder_funcs = encoder->helper_private; |
||
684 | /* Disable the encoders as the first thing we do. */ |
||
685 | encoder_funcs->prepare(encoder); |
||
686 | } |
||
687 | |||
688 | drm_crtc_prepare_encoders(dev); |
||
689 | |||
690 | crtc_funcs->prepare(crtc); |
||
691 | |||
692 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
||
693 | * on the DPLL. |
||
694 | */ |
||
695 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
||
696 | if (!ret) |
||
697 | goto done; |
||
698 | |||
699 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
700 | |||
701 | if (encoder->crtc != crtc) |
||
702 | continue; |
||
703 | |||
704 | DRM_INFO("%s: set mode %s %x\n", drm_get_encoder_name(encoder), |
||
705 | mode->name, mode->base.id); |
||
706 | encoder_funcs = encoder->helper_private; |
||
707 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
||
708 | } |
||
709 | |||
710 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
||
711 | crtc_funcs->commit(crtc); |
||
712 | |||
713 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
714 | |||
715 | if (encoder->crtc != crtc) |
||
716 | continue; |
||
717 | |||
718 | encoder_funcs = encoder->helper_private; |
||
719 | encoder_funcs->commit(encoder); |
||
720 | |||
721 | } |
||
722 | |||
723 | /* XXX free adjustedmode */ |
||
724 | drm_mode_destroy(dev, adjusted_mode); |
||
725 | /* FIXME: add subpixel order */ |
||
726 | done: |
||
727 | if (!ret) { |
||
728 | crtc->mode = saved_mode; |
||
729 | crtc->x = saved_x; |
||
730 | crtc->y = saved_y; |
||
731 | } |
||
1179 | serge | 732 | |
1123 | serge | 733 | return ret; |
734 | } |
||
735 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
||
736 | |||
737 | |||
738 | /** |
||
739 | * drm_crtc_helper_set_config - set a new config from userspace |
||
740 | * @crtc: CRTC to setup |
||
741 | * @crtc_info: user provided configuration |
||
742 | * @new_mode: new mode to set |
||
743 | * @connector_set: set of connectors for the new config |
||
744 | * @fb: new framebuffer |
||
745 | * |
||
746 | * LOCKING: |
||
747 | * Caller must hold mode config lock. |
||
748 | * |
||
749 | * Setup a new configuration, provided by the user in @crtc_info, and enable |
||
750 | * it. |
||
751 | * |
||
752 | * RETURNS: |
||
753 | * Zero. (FIXME) |
||
754 | */ |
||
755 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
||
756 | { |
||
757 | struct drm_device *dev; |
||
1179 | serge | 758 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
759 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
||
1123 | serge | 760 | struct drm_framebuffer *old_fb = NULL; |
1179 | serge | 761 | bool mode_changed = false; /* if true do a full mode set */ |
762 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
||
763 | struct drm_connector *save_connectors, *connector; |
||
1123 | serge | 764 | int count = 0, ro, fail = 0; |
765 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
766 | int ret = 0; |
||
767 | |||
1179 | serge | 768 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 769 | |
770 | if (!set) |
||
771 | return -EINVAL; |
||
772 | |||
773 | if (!set->crtc) |
||
774 | return -EINVAL; |
||
775 | |||
776 | if (!set->crtc->helper_private) |
||
777 | return -EINVAL; |
||
778 | |||
779 | crtc_funcs = set->crtc->helper_private; |
||
780 | |||
1179 | serge | 781 | DRM_DEBUG_KMS("crtc: %p %d fb: %p connectors: %p num_connectors:" |
782 | " %d (x, y) (%i, %i)\n", |
||
1123 | serge | 783 | set->crtc, set->crtc->base.id, set->fb, set->connectors, |
784 | (int)set->num_connectors, set->x, set->y); |
||
785 | |||
786 | dev = set->crtc->dev; |
||
787 | |||
1179 | serge | 788 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
789 | * connector data. */ |
||
790 | save_crtcs = kzalloc(dev->mode_config.num_crtc * |
||
791 | sizeof(struct drm_crtc), GFP_KERNEL); |
||
1123 | serge | 792 | if (!save_crtcs) |
793 | return -ENOMEM; |
||
794 | |||
1179 | serge | 795 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
796 | sizeof(struct drm_encoder), GFP_KERNEL); |
||
1123 | serge | 797 | if (!save_encoders) { |
798 | kfree(save_crtcs); |
||
799 | return -ENOMEM; |
||
800 | } |
||
801 | |||
1179 | serge | 802 | save_connectors = kzalloc(dev->mode_config.num_connector * |
803 | sizeof(struct drm_connector), GFP_KERNEL); |
||
804 | if (!save_connectors) { |
||
805 | kfree(save_crtcs); |
||
806 | kfree(save_encoders); |
||
807 | return -ENOMEM; |
||
808 | } |
||
809 | |||
810 | /* Copy data. Note that driver private data is not affected. |
||
811 | * Should anything bad happen only the expected state is |
||
812 | * restored, not the drivers personal bookkeeping. |
||
813 | */ |
||
814 | count = 0; |
||
815 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
816 | save_crtcs[count++] = *crtc; |
||
817 | } |
||
818 | |||
819 | count = 0; |
||
820 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
821 | save_encoders[count++] = *encoder; |
||
822 | } |
||
823 | |||
824 | count = 0; |
||
825 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
826 | save_connectors[count++] = *connector; |
||
827 | } |
||
828 | |||
1123 | serge | 829 | /* We should be able to check here if the fb has the same properties |
830 | * and then just flip_or_move it */ |
||
831 | if (set->crtc->fb != set->fb) { |
||
832 | /* If we have no fb then treat it as a full mode set */ |
||
833 | if (set->crtc->fb == NULL) { |
||
1179 | serge | 834 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
1123 | serge | 835 | mode_changed = true; |
1179 | serge | 836 | } else if (set->fb == NULL) { |
837 | mode_changed = true; |
||
1123 | serge | 838 | } else if ((set->fb->bits_per_pixel != |
839 | set->crtc->fb->bits_per_pixel) || |
||
840 | set->fb->depth != set->crtc->fb->depth) |
||
841 | fb_changed = true; |
||
842 | else |
||
843 | fb_changed = true; |
||
844 | } |
||
845 | |||
846 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
||
847 | fb_changed = true; |
||
848 | |||
849 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
||
1179 | serge | 850 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
1123 | serge | 851 | drm_mode_debug_printmodeline(&set->crtc->mode); |
852 | drm_mode_debug_printmodeline(set->mode); |
||
853 | mode_changed = true; |
||
854 | } |
||
855 | |||
856 | /* a) traverse passed in connector list and get encoders for them */ |
||
857 | count = 0; |
||
858 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
859 | struct drm_connector_helper_funcs *connector_funcs = |
||
860 | connector->helper_private; |
||
861 | new_encoder = connector->encoder; |
||
862 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
863 | if (set->connectors[ro] == connector) { |
||
864 | new_encoder = connector_funcs->best_encoder(connector); |
||
865 | /* if we can't get an encoder for a connector |
||
866 | we are setting now - then fail */ |
||
867 | if (new_encoder == NULL) |
||
868 | /* don't break so fail path works correct */ |
||
869 | fail = 1; |
||
870 | break; |
||
871 | } |
||
872 | } |
||
873 | |||
874 | if (new_encoder != connector->encoder) { |
||
1179 | serge | 875 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
1123 | serge | 876 | mode_changed = true; |
1179 | serge | 877 | /* If the encoder is reused for another connector, then |
878 | * the appropriate crtc will be set later. |
||
879 | */ |
||
880 | if (connector->encoder) |
||
881 | connector->encoder->crtc = NULL; |
||
1123 | serge | 882 | connector->encoder = new_encoder; |
883 | } |
||
884 | } |
||
885 | |||
886 | if (fail) { |
||
887 | ret = -EINVAL; |
||
1179 | serge | 888 | goto fail; |
1123 | serge | 889 | } |
890 | |||
891 | count = 0; |
||
892 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
893 | if (!connector->encoder) |
||
894 | continue; |
||
895 | |||
896 | if (connector->encoder->crtc == set->crtc) |
||
897 | new_crtc = NULL; |
||
898 | else |
||
899 | new_crtc = connector->encoder->crtc; |
||
900 | |||
901 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
902 | if (set->connectors[ro] == connector) |
||
903 | new_crtc = set->crtc; |
||
904 | } |
||
905 | |||
906 | /* Make sure the new CRTC will work with the encoder */ |
||
907 | if (new_crtc && |
||
908 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
||
909 | ret = -EINVAL; |
||
1179 | serge | 910 | goto fail; |
1123 | serge | 911 | } |
912 | if (new_crtc != connector->encoder->crtc) { |
||
1179 | serge | 913 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
1123 | serge | 914 | mode_changed = true; |
915 | connector->encoder->crtc = new_crtc; |
||
916 | } |
||
1179 | serge | 917 | DRM_DEBUG_KMS("setting connector %d crtc to %p\n", |
1123 | serge | 918 | connector->base.id, new_crtc); |
919 | } |
||
920 | |||
921 | /* mode_set_base is not a required function */ |
||
922 | if (fb_changed && !crtc_funcs->mode_set_base) |
||
923 | mode_changed = true; |
||
924 | |||
925 | if (mode_changed) { |
||
926 | old_fb = set->crtc->fb; |
||
927 | set->crtc->fb = set->fb; |
||
928 | set->crtc->enabled = (set->mode != NULL); |
||
929 | if (set->mode != NULL) { |
||
1179 | serge | 930 | DRM_DEBUG_KMS("attempting to set mode from" |
931 | " userspace\n"); |
||
1123 | serge | 932 | drm_mode_debug_printmodeline(set->mode); |
933 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
||
934 | set->x, set->y, |
||
935 | old_fb)) { |
||
936 | DRM_ERROR("failed to set mode on crtc %p\n", |
||
937 | set->crtc); |
||
938 | ret = -EINVAL; |
||
1179 | serge | 939 | goto fail; |
1123 | serge | 940 | } |
941 | /* TODO are these needed? */ |
||
942 | set->crtc->desired_x = set->x; |
||
943 | set->crtc->desired_y = set->y; |
||
944 | set->crtc->desired_mode = set->mode; |
||
945 | } |
||
946 | drm_helper_disable_unused_functions(dev); |
||
947 | } else if (fb_changed) { |
||
1179 | serge | 948 | set->crtc->x = set->x; |
949 | set->crtc->y = set->y; |
||
950 | |||
1123 | serge | 951 | old_fb = set->crtc->fb; |
952 | if (set->crtc->fb != set->fb) |
||
953 | set->crtc->fb = set->fb; |
||
954 | ret = crtc_funcs->mode_set_base(set->crtc, |
||
955 | set->x, set->y, old_fb); |
||
956 | if (ret != 0) |
||
1179 | serge | 957 | goto fail; |
1123 | serge | 958 | } |
959 | |||
1179 | serge | 960 | kfree(save_connectors); |
1123 | serge | 961 | kfree(save_encoders); |
962 | kfree(save_crtcs); |
||
963 | return 0; |
||
964 | |||
1179 | serge | 965 | fail: |
966 | /* Restore all previous data. */ |
||
1123 | serge | 967 | count = 0; |
1179 | serge | 968 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
969 | *crtc = save_crtcs[count++]; |
||
970 | } |
||
1123 | serge | 971 | |
1179 | serge | 972 | count = 0; |
973 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
974 | *encoder = save_encoders[count++]; |
||
1123 | serge | 975 | } |
1179 | serge | 976 | |
1123 | serge | 977 | count = 0; |
978 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1179 | serge | 979 | *connector = save_connectors[count++]; |
1123 | serge | 980 | } |
1179 | serge | 981 | |
982 | kfree(save_connectors); |
||
1123 | serge | 983 | kfree(save_encoders); |
1179 | serge | 984 | kfree(save_crtcs); |
1123 | serge | 985 | return ret; |
986 | } |
||
987 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
||
988 | |||
989 | bool drm_helper_plugged_event(struct drm_device *dev) |
||
990 | { |
||
1179 | serge | 991 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 992 | |
993 | drm_helper_probe_connector_modes(dev, dev->mode_config.max_width, |
||
994 | dev->mode_config.max_height); |
||
995 | |||
996 | drm_setup_crtcs(dev); |
||
997 | |||
998 | /* alert the driver fb layer */ |
||
1126 | serge | 999 | dev->mode_config.funcs->fb_changed(dev); |
1123 | serge | 1000 | |
1001 | /* FIXME: send hotplug event */ |
||
1002 | return true; |
||
1003 | } |
||
1004 | /** |
||
1005 | * drm_initial_config - setup a sane initial connector configuration |
||
1006 | * @dev: DRM device |
||
1007 | * |
||
1008 | * LOCKING: |
||
1009 | * Called at init time, must take mode config lock. |
||
1010 | * |
||
1011 | * Scan the CRTCs and connectors and try to put together an initial setup. |
||
1012 | * At the moment, this is a cloned configuration across all heads with |
||
1013 | * a new framebuffer object as the backing store. |
||
1014 | * |
||
1015 | * RETURNS: |
||
1016 | * Zero if everything went ok, nonzero otherwise. |
||
1017 | */ |
||
1018 | bool drm_helper_initial_config(struct drm_device *dev) |
||
1019 | { |
||
1020 | int count = 0; |
||
1021 | |||
1022 | count = drm_helper_probe_connector_modes(dev, |
||
1023 | dev->mode_config.max_width, |
||
1024 | dev->mode_config.max_height); |
||
1025 | |||
1026 | /* |
||
1179 | serge | 1027 | * we shouldn't end up with no modes here. |
1123 | serge | 1028 | */ |
1179 | serge | 1029 | // WARN(!count, "Connected connector with 0 modes\n"); |
1123 | serge | 1030 | |
1031 | drm_setup_crtcs(dev); |
||
1032 | |||
1179 | serge | 1033 | /* alert the driver fb layer */ |
1126 | serge | 1034 | dev->mode_config.funcs->fb_changed(dev); |
1035 | |||
1123 | serge | 1036 | return 0; |
1037 | } |
||
1038 | EXPORT_SYMBOL(drm_helper_initial_config); |
||
1039 | |||
1040 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
||
1041 | { |
||
1042 | int dpms = DRM_MODE_DPMS_OFF; |
||
1043 | struct drm_connector *connector; |
||
1044 | struct drm_device *dev = encoder->dev; |
||
1045 | |||
1046 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
1047 | if (connector->encoder == encoder) |
||
1048 | if (connector->dpms < dpms) |
||
1049 | dpms = connector->dpms; |
||
1050 | return dpms; |
||
1051 | } |
||
1052 | |||
1053 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
||
1054 | { |
||
1055 | int dpms = DRM_MODE_DPMS_OFF; |
||
1056 | struct drm_connector *connector; |
||
1057 | struct drm_device *dev = crtc->dev; |
||
1058 | |||
1059 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
1060 | if (connector->encoder && connector->encoder->crtc == crtc) |
||
1061 | if (connector->dpms < dpms) |
||
1062 | dpms = connector->dpms; |
||
1063 | return dpms; |
||
1064 | } |
||
1065 | |||
1066 | /** |
||
1067 | * drm_helper_connector_dpms |
||
1068 | * @connector affected connector |
||
1069 | * @mode DPMS mode |
||
1070 | * |
||
1071 | * Calls the low-level connector DPMS function, then |
||
1072 | * calls appropriate encoder and crtc DPMS functions as well |
||
1073 | */ |
||
1074 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
||
1075 | { |
||
1076 | struct drm_encoder *encoder = connector->encoder; |
||
1077 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
||
1078 | int old_dpms; |
||
1079 | |||
1080 | if (mode == connector->dpms) |
||
1081 | return; |
||
1082 | |||
1083 | old_dpms = connector->dpms; |
||
1084 | connector->dpms = mode; |
||
1085 | |||
1086 | /* from off to on, do crtc then encoder */ |
||
1087 | if (mode < old_dpms) { |
||
1088 | if (crtc) { |
||
1089 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
1090 | if (crtc_funcs->dpms) |
||
1091 | (*crtc_funcs->dpms) (crtc, |
||
1092 | drm_helper_choose_crtc_dpms(crtc)); |
||
1093 | } |
||
1094 | if (encoder) { |
||
1095 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
1096 | if (encoder_funcs->dpms) |
||
1097 | (*encoder_funcs->dpms) (encoder, |
||
1098 | drm_helper_choose_encoder_dpms(encoder)); |
||
1099 | } |
||
1100 | } |
||
1101 | |||
1102 | /* from on to off, do encoder then crtc */ |
||
1103 | if (mode > old_dpms) { |
||
1104 | if (encoder) { |
||
1105 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
1106 | if (encoder_funcs->dpms) |
||
1107 | (*encoder_funcs->dpms) (encoder, |
||
1108 | drm_helper_choose_encoder_dpms(encoder)); |
||
1109 | } |
||
1110 | if (crtc) { |
||
1111 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
1112 | if (crtc_funcs->dpms) |
||
1113 | (*crtc_funcs->dpms) (crtc, |
||
1114 | drm_helper_choose_crtc_dpms(crtc)); |
||
1115 | } |
||
1116 | } |
||
1117 | |||
1118 | return; |
||
1119 | } |
||
1120 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
||
1121 | |||
1122 | /** |
||
1123 | * drm_hotplug_stage_two |
||
1124 | * @dev DRM device |
||
1125 | * @connector hotpluged connector |
||
1126 | * |
||
1127 | * LOCKING. |
||
1128 | * Caller must hold mode config lock, function might grab struct lock. |
||
1129 | * |
||
1130 | * Stage two of a hotplug. |
||
1131 | * |
||
1132 | * RETURNS: |
||
1133 | * Zero on success, errno on failure. |
||
1134 | */ |
||
1135 | int drm_helper_hotplug_stage_two(struct drm_device *dev) |
||
1136 | { |
||
1137 | drm_helper_plugged_event(dev); |
||
1138 | |||
1139 | return 0; |
||
1140 | } |
||
1141 | EXPORT_SYMBOL(drm_helper_hotplug_stage_two); |
||
1142 | |||
1143 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
||
1144 | struct drm_mode_fb_cmd *mode_cmd) |
||
1145 | { |
||
1146 | fb->width = mode_cmd->width; |
||
1147 | fb->height = mode_cmd->height; |
||
1148 | fb->pitch = mode_cmd->pitch; |
||
1149 | fb->bits_per_pixel = mode_cmd->bpp; |
||
1150 | fb->depth = mode_cmd->depth; |
||
1151 | |||
1152 | return 0; |
||
1153 | } |
||
1154 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
||
1155 | |||
1179 | serge | 1156 | void sysSetScreen(int width, int height, int pitch) |
1126 | serge | 1157 | { |
1158 | asm __volatile__ |
||
1159 | ( |
||
1160 | "call *__imp__SetScreen" |
||
1161 | : |
||
1179 | serge | 1162 | :"a" (width-1),"d"(height-1), "c"(pitch) |
1126 | serge | 1163 | :"memory","cc" |
1164 | ); |
||
1165 | } |
||
1166 | |||
1167 | |||
1123 | serge | 1168 | int drm_helper_resume_force_mode(struct drm_device *dev) |
1169 | { |
||
1170 | struct drm_crtc *crtc; |
||
1171 | int ret; |
||
1172 | |||
1173 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
1174 | |||
1179 | serge | 1175 | if (!crtc->enabled) |
1176 | continue; |
||
1123 | serge | 1177 | |
1179 | serge | 1178 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1123 | serge | 1179 | crtc->x, crtc->y, crtc->fb); |
1180 | |||
1181 | if (ret == false) |
||
1182 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
||
1183 | } |
||
1179 | serge | 1184 | /* disable the unused connectors while restoring the modesetting */ |
1185 | drm_helper_disable_unused_functions(dev); |
||
1123 | serge | 1186 | return 0; |
1187 | } |
||
1188 | EXPORT_SYMBOL(drm_helper_resume_force_mode);>>>>>=><=>>>><> |