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