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Rev | Author | Line No. | Line |
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1123 | serge | 1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation |
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3 | * Copyright (c) 2007 Dave Airlie |
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4 | * |
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5 | * DRM core CRTC related functions |
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6 | * |
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7 | * Permission to use, copy, modify, distribute, and sell this software and its |
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8 | * documentation for any purpose is hereby granted without fee, provided that |
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9 | * the above copyright notice appear in all copies and that both that copyright |
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10 | * notice and this permission notice appear in supporting documentation, and |
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11 | * that the name of the copyright holders not be used in advertising or |
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12 | * publicity pertaining to distribution of the software without specific, |
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13 | * written prior permission. The copyright holders make no representations |
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14 | * about the suitability of this software for any purpose. It is provided "as |
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15 | * is" without express or implied warranty. |
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16 | * |
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17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
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19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
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20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
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23 | * OF THIS SOFTWARE. |
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24 | * |
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25 | * Authors: |
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26 | * Keith Packard |
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27 | * Eric Anholt |
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28 | * Dave Airlie |
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29 | * Jesse Barnes |
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30 | */ |
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31 | |||
3031 | serge | 32 | #include |
33 | #include |
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1123 | serge | 34 | |
3031 | serge | 35 | #include |
36 | #include |
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37 | #include |
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38 | #include |
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39 | #include |
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40 | #include |
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41 | |||
3192 | Serge | 42 | /** |
43 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the |
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44 | * connector list |
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45 | * @dev: drm device to operate on |
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46 | * |
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47 | * Some userspace presumes that the first connected connector is the main |
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48 | * display, where it's supposed to display e.g. the login screen. For |
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49 | * laptops, this should be the main panel. Use this function to sort all |
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50 | * (eDP/LVDS) panels to the front of the connector list, instead of |
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51 | * painstakingly trying to initialize them in the right order. |
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52 | */ |
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53 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
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54 | { |
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55 | struct drm_connector *connector, *tmp; |
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56 | struct list_head panel_list; |
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57 | |||
58 | INIT_LIST_HEAD(&panel_list); |
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59 | |||
60 | list_for_each_entry_safe(connector, tmp, |
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61 | &dev->mode_config.connector_list, head) { |
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62 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || |
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63 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
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64 | list_move_tail(&connector->head, &panel_list); |
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65 | } |
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66 | |||
67 | list_splice(&panel_list, &dev->mode_config.connector_list); |
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68 | } |
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69 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); |
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70 | |||
1963 | serge | 71 | static bool drm_kms_helper_poll = true; |
72 | |||
1123 | serge | 73 | static void drm_mode_validate_flag(struct drm_connector *connector, |
74 | int flags) |
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75 | { |
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3031 | serge | 76 | struct drm_display_mode *mode; |
1123 | serge | 77 | |
78 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) |
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79 | return; |
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80 | |||
3031 | serge | 81 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 82 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
83 | !(flags & DRM_MODE_FLAG_INTERLACE)) |
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84 | mode->status = MODE_NO_INTERLACE; |
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85 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && |
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86 | !(flags & DRM_MODE_FLAG_DBLSCAN)) |
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87 | mode->status = MODE_NO_DBLESCAN; |
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88 | } |
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89 | |||
90 | return; |
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91 | } |
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92 | |||
93 | /** |
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1963 | serge | 94 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
3192 | Serge | 95 | * @connector: connector to probe |
1123 | serge | 96 | * @maxX: max width for modes |
97 | * @maxY: max height for modes |
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98 | * |
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99 | * LOCKING: |
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100 | * Caller must hold mode config lock. |
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101 | * |
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3192 | Serge | 102 | * Based on the helper callbacks implemented by @connector try to detect all |
103 | * valid modes. Modes will first be added to the connector's probed_modes list, |
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104 | * then culled (based on validity and the @maxX, @maxY parameters) and put into |
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105 | * the normal modes list. |
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1123 | serge | 106 | * |
3192 | Serge | 107 | * Intended to be use as a generic implementation of the ->probe() @connector |
108 | * callback for drivers that use the crtc helpers for output mode filtering and |
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109 | * detection. |
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1123 | serge | 110 | * |
111 | * RETURNS: |
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112 | * Number of modes found on @connector. |
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113 | */ |
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114 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
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115 | uint32_t maxX, uint32_t maxY) |
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116 | { |
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117 | struct drm_device *dev = connector->dev; |
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3031 | serge | 118 | struct drm_display_mode *mode; |
1123 | serge | 119 | struct drm_connector_helper_funcs *connector_funcs = |
120 | connector->helper_private; |
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121 | int count = 0; |
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122 | int mode_flags = 0; |
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123 | |||
1963 | serge | 124 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
125 | drm_get_connector_name(connector)); |
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1123 | serge | 126 | /* set all modes to the unverified state */ |
3031 | serge | 127 | list_for_each_entry(mode, &connector->modes, head) |
1123 | serge | 128 | mode->status = MODE_UNVERIFIED; |
129 | |||
1221 | serge | 130 | if (connector->force) { |
131 | if (connector->force == DRM_FORCE_ON) |
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132 | connector->status = connector_status_connected; |
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133 | else |
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134 | connector->status = connector_status_disconnected; |
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135 | if (connector->funcs->force) |
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136 | connector->funcs->force(connector); |
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1963 | serge | 137 | } else { |
138 | connector->status = connector->funcs->detect(connector, true); |
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139 | // drm_kms_helper_poll_enable(dev); |
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140 | } |
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1123 | serge | 141 | |
142 | if (connector->status == connector_status_disconnected) { |
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1963 | serge | 143 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
144 | connector->base.id, drm_get_connector_name(connector)); |
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145 | drm_mode_connector_update_edid_property(connector, NULL); |
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1179 | serge | 146 | goto prune; |
1123 | serge | 147 | } |
148 | |||
3031 | serge | 149 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
150 | count = drm_load_edid_firmware(connector); |
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151 | if (count == 0) |
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152 | #endif |
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1123 | serge | 153 | count = (*connector_funcs->get_modes)(connector); |
3031 | serge | 154 | |
1963 | serge | 155 | if (count == 0 && connector->status == connector_status_connected) |
1321 | serge | 156 | count = drm_add_modes_noedid(connector, 1024, 768); |
1963 | serge | 157 | if (count == 0) |
158 | goto prune; |
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1123 | serge | 159 | |
160 | drm_mode_connector_list_update(connector); |
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161 | |||
162 | if (maxX && maxY) |
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163 | drm_mode_validate_size(dev, &connector->modes, maxX, |
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164 | maxY, 0); |
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165 | |||
166 | if (connector->interlace_allowed) |
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167 | mode_flags |= DRM_MODE_FLAG_INTERLACE; |
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168 | if (connector->doublescan_allowed) |
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169 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; |
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170 | drm_mode_validate_flag(connector, mode_flags); |
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171 | |||
3031 | serge | 172 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 173 | if (mode->status == MODE_OK) |
174 | mode->status = connector_funcs->mode_valid(connector, |
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175 | mode); |
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176 | } |
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177 | |||
1179 | serge | 178 | prune: |
1123 | serge | 179 | drm_mode_prune_invalid(dev, &connector->modes, true); |
180 | |||
181 | if (list_empty(&connector->modes)) |
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182 | return 0; |
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183 | |||
184 | drm_mode_sort(&connector->modes); |
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185 | |||
1963 | serge | 186 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
1179 | serge | 187 | drm_get_connector_name(connector)); |
3031 | serge | 188 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 189 | mode->vrefresh = drm_mode_vrefresh(mode); |
190 | |||
191 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
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192 | drm_mode_debug_printmodeline(mode); |
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193 | } |
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194 | |||
195 | return count; |
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196 | } |
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197 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
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198 | |||
199 | /** |
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200 | * drm_helper_encoder_in_use - check if a given encoder is in use |
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201 | * @encoder: encoder to check |
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202 | * |
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203 | * LOCKING: |
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204 | * Caller must hold mode config lock. |
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205 | * |
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206 | * Walk @encoders's DRM device's mode_config and see if it's in use. |
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207 | * |
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208 | * RETURNS: |
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209 | * True if @encoder is part of the mode_config, false otherwise. |
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210 | */ |
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211 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
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212 | { |
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213 | struct drm_connector *connector; |
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214 | struct drm_device *dev = encoder->dev; |
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215 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
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216 | if (connector->encoder == encoder) |
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217 | return true; |
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218 | return false; |
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219 | } |
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220 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
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221 | |||
222 | /** |
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223 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
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224 | * @crtc: CRTC to check |
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225 | * |
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226 | * LOCKING: |
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227 | * Caller must hold mode config lock. |
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228 | * |
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229 | * Walk @crtc's DRM device's mode_config and see if it's in use. |
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230 | * |
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231 | * RETURNS: |
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232 | * True if @crtc is part of the mode_config, false otherwise. |
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233 | */ |
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234 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
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235 | { |
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236 | struct drm_encoder *encoder; |
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237 | struct drm_device *dev = crtc->dev; |
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238 | /* FIXME: Locking around list access? */ |
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239 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
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240 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
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241 | return true; |
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242 | return false; |
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243 | } |
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244 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
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245 | |||
1963 | serge | 246 | static void |
247 | drm_encoder_disable(struct drm_encoder *encoder) |
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248 | { |
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249 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
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250 | |||
251 | if (encoder_funcs->disable) |
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252 | (*encoder_funcs->disable)(encoder); |
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253 | else |
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254 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
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255 | } |
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256 | |||
1123 | serge | 257 | /** |
1404 | serge | 258 | * drm_helper_disable_unused_functions - disable unused objects |
1123 | serge | 259 | * @dev: DRM device |
260 | * |
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261 | * LOCKING: |
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262 | * Caller must hold mode config lock. |
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263 | * |
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264 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
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265 | * by calling its dpms function, which should power it off. |
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266 | */ |
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267 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
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268 | { |
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269 | struct drm_encoder *encoder; |
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1179 | serge | 270 | struct drm_connector *connector; |
1123 | serge | 271 | struct drm_crtc *crtc; |
272 | |||
1179 | serge | 273 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
274 | if (!connector->encoder) |
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275 | continue; |
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276 | if (connector->status == connector_status_disconnected) |
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277 | connector->encoder = NULL; |
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278 | } |
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279 | |||
1123 | serge | 280 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
1179 | serge | 281 | if (!drm_helper_encoder_in_use(encoder)) { |
1963 | serge | 282 | drm_encoder_disable(encoder); |
1179 | serge | 283 | /* disconnector encoder from any connector */ |
284 | encoder->crtc = NULL; |
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285 | } |
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1123 | serge | 286 | } |
287 | |||
288 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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289 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
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290 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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291 | if (!crtc->enabled) { |
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1963 | serge | 292 | if (crtc_funcs->disable) |
293 | (*crtc_funcs->disable)(crtc); |
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294 | else |
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295 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
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1123 | serge | 296 | crtc->fb = NULL; |
297 | } |
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298 | } |
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3031 | serge | 299 | |
1123 | serge | 300 | } |
301 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
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302 | |||
303 | /** |
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304 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? |
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305 | * @encoder: encoder to test |
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306 | * @crtc: crtc to test |
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307 | * |
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308 | * Return false if @encoder can't be driven by @crtc, true otherwise. |
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309 | */ |
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310 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, |
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311 | struct drm_crtc *crtc) |
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312 | { |
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313 | struct drm_device *dev; |
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314 | struct drm_crtc *tmp; |
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315 | int crtc_mask = 1; |
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316 | |||
1963 | serge | 317 | WARN(!crtc, "checking null crtc?\n"); |
1123 | serge | 318 | |
319 | dev = crtc->dev; |
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320 | |||
321 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { |
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322 | if (tmp == crtc) |
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323 | break; |
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324 | crtc_mask <<= 1; |
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325 | } |
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326 | |||
327 | if (encoder->possible_crtcs & crtc_mask) |
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328 | return true; |
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329 | return false; |
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330 | } |
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331 | |||
332 | /* |
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333 | * Check the CRTC we're going to map each output to vs. its current |
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334 | * CRTC. If they don't match, we have to disable the output and the CRTC |
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335 | * since the driver will have to re-route things. |
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336 | */ |
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337 | static void |
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338 | drm_crtc_prepare_encoders(struct drm_device *dev) |
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339 | { |
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340 | struct drm_encoder_helper_funcs *encoder_funcs; |
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341 | struct drm_encoder *encoder; |
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342 | |||
343 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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344 | encoder_funcs = encoder->helper_private; |
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345 | /* Disable unused encoders */ |
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346 | if (encoder->crtc == NULL) |
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1963 | serge | 347 | drm_encoder_disable(encoder); |
1123 | serge | 348 | /* Disable encoders whose CRTC is about to change */ |
349 | if (encoder_funcs->get_crtc && |
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350 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
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1963 | serge | 351 | drm_encoder_disable(encoder); |
1123 | serge | 352 | } |
353 | } |
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354 | |||
355 | /** |
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3192 | Serge | 356 | * drm_crtc_helper_set_mode - internal helper to set a mode |
1123 | serge | 357 | * @crtc: CRTC to program |
358 | * @mode: mode to use |
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3192 | Serge | 359 | * @x: horizontal offset into the surface |
360 | * @y: vertical offset into the surface |
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361 | * @old_fb: old framebuffer, for cleanup |
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1123 | serge | 362 | * |
363 | * LOCKING: |
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364 | * Caller must hold mode config lock. |
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365 | * |
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366 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
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3192 | Serge | 367 | * to fixup or reject the mode prior to trying to set it. This is an internal |
368 | * helper that drivers could e.g. use to update properties that require the |
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369 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
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370 | * example for changing whether audio is enabled on a hdmi link or for changing |
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371 | * panel fitter or dither attributes. It is also called by the |
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372 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
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373 | * sequence. |
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1123 | serge | 374 | * |
375 | * RETURNS: |
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376 | * True if the mode was set successfully, or false otherwise. |
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377 | */ |
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378 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
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379 | struct drm_display_mode *mode, |
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380 | int x, int y, |
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381 | struct drm_framebuffer *old_fb) |
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382 | { |
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383 | struct drm_device *dev = crtc->dev; |
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1963 | serge | 384 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
1123 | serge | 385 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
386 | struct drm_encoder_helper_funcs *encoder_funcs; |
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387 | int saved_x, saved_y; |
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388 | struct drm_encoder *encoder; |
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389 | bool ret = true; |
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390 | |||
391 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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392 | if (!crtc->enabled) |
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393 | return true; |
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394 | |||
1963 | serge | 395 | adjusted_mode = drm_mode_duplicate(dev, mode); |
3031 | serge | 396 | if (!adjusted_mode) |
397 | return false; |
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1963 | serge | 398 | |
399 | saved_hwmode = crtc->hwmode; |
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1123 | serge | 400 | saved_mode = crtc->mode; |
401 | saved_x = crtc->x; |
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402 | saved_y = crtc->y; |
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403 | |||
404 | /* Update crtc values up front so the driver can rely on them for mode |
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405 | * setting. |
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406 | */ |
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407 | crtc->mode = *mode; |
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408 | crtc->x = x; |
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409 | crtc->y = y; |
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410 | |||
411 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
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412 | * adjust it according to limitations or connector properties, and also |
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413 | * a chance to reject the mode entirely. |
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414 | */ |
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415 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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416 | |||
417 | if (encoder->crtc != crtc) |
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418 | continue; |
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419 | encoder_funcs = encoder->helper_private; |
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420 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
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421 | adjusted_mode))) { |
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3031 | serge | 422 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
1123 | serge | 423 | goto done; |
424 | } |
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425 | } |
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426 | |||
427 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
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3031 | serge | 428 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
1123 | serge | 429 | goto done; |
430 | } |
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1963 | serge | 431 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
1123 | serge | 432 | |
433 | /* Prepare the encoders and CRTCs before setting the mode. */ |
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434 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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435 | |||
436 | if (encoder->crtc != crtc) |
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437 | continue; |
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438 | encoder_funcs = encoder->helper_private; |
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439 | /* Disable the encoders as the first thing we do. */ |
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440 | encoder_funcs->prepare(encoder); |
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441 | } |
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442 | |||
443 | drm_crtc_prepare_encoders(dev); |
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444 | |||
445 | crtc_funcs->prepare(crtc); |
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446 | |||
447 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
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448 | * on the DPLL. |
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449 | */ |
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450 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
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451 | if (!ret) |
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452 | goto done; |
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453 | |||
454 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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455 | |||
456 | if (encoder->crtc != crtc) |
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457 | continue; |
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458 | |||
1963 | serge | 459 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
460 | encoder->base.id, drm_get_encoder_name(encoder), |
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461 | mode->base.id, mode->name); |
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1123 | serge | 462 | encoder_funcs = encoder->helper_private; |
463 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
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464 | } |
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465 | |||
466 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
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467 | crtc_funcs->commit(crtc); |
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468 | |||
469 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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470 | |||
471 | if (encoder->crtc != crtc) |
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472 | continue; |
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473 | |||
474 | encoder_funcs = encoder->helper_private; |
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475 | encoder_funcs->commit(encoder); |
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476 | |||
477 | } |
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478 | |||
1963 | serge | 479 | /* Store real post-adjustment hardware mode. */ |
480 | crtc->hwmode = *adjusted_mode; |
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481 | |||
482 | /* Calculate and store various constants which |
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483 | * are later needed by vblank and swap-completion |
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484 | * timestamping. They are derived from true hwmode. |
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485 | */ |
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486 | drm_calc_timestamping_constants(crtc); |
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487 | |||
1123 | serge | 488 | /* FIXME: add subpixel order */ |
489 | done: |
||
1963 | serge | 490 | drm_mode_destroy(dev, adjusted_mode); |
1123 | serge | 491 | if (!ret) { |
1963 | serge | 492 | crtc->hwmode = saved_hwmode; |
1123 | serge | 493 | crtc->mode = saved_mode; |
494 | crtc->x = saved_x; |
||
495 | crtc->y = saved_y; |
||
496 | } |
||
1179 | serge | 497 | |
1123 | serge | 498 | return ret; |
499 | } |
||
500 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
||
501 | |||
502 | |||
3031 | serge | 503 | static int |
504 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
||
505 | { |
||
506 | struct drm_device *dev = crtc->dev; |
||
507 | struct drm_connector *connector; |
||
508 | struct drm_encoder *encoder; |
||
509 | |||
510 | /* Decouple all encoders and their attached connectors from this crtc */ |
||
511 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
512 | if (encoder->crtc != crtc) |
||
513 | continue; |
||
514 | |||
515 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
516 | if (connector->encoder != encoder) |
||
517 | continue; |
||
518 | |||
519 | connector->encoder = NULL; |
||
520 | } |
||
521 | } |
||
522 | |||
523 | drm_helper_disable_unused_functions(dev); |
||
524 | return 0; |
||
525 | } |
||
526 | |||
1123 | serge | 527 | /** |
528 | * drm_crtc_helper_set_config - set a new config from userspace |
||
3192 | Serge | 529 | * @set: mode set configuration |
1123 | serge | 530 | * |
531 | * LOCKING: |
||
532 | * Caller must hold mode config lock. |
||
533 | * |
||
3192 | Serge | 534 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
535 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and |
||
536 | * enable it. This is the main helper functions for drivers that implement |
||
537 | * kernel mode setting with the crtc helper functions and the assorted |
||
538 | * ->prepare(), ->modeset() and ->commit() helper callbacks. |
||
1123 | serge | 539 | * |
540 | * RETURNS: |
||
3192 | Serge | 541 | * Returns 0 on success, -ERRNO on failure. |
1123 | serge | 542 | */ |
543 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
||
544 | { |
||
545 | struct drm_device *dev; |
||
1179 | serge | 546 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
547 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
||
1123 | serge | 548 | struct drm_framebuffer *old_fb = NULL; |
1179 | serge | 549 | bool mode_changed = false; /* if true do a full mode set */ |
550 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
||
551 | struct drm_connector *save_connectors, *connector; |
||
1123 | serge | 552 | int count = 0, ro, fail = 0; |
553 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
3031 | serge | 554 | struct drm_mode_set save_set; |
555 | int ret; |
||
1963 | serge | 556 | int i; |
1123 | serge | 557 | |
1179 | serge | 558 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 559 | |
560 | if (!set) |
||
561 | return -EINVAL; |
||
562 | |||
563 | if (!set->crtc) |
||
564 | return -EINVAL; |
||
565 | |||
566 | if (!set->crtc->helper_private) |
||
567 | return -EINVAL; |
||
568 | |||
569 | crtc_funcs = set->crtc->helper_private; |
||
570 | |||
1963 | serge | 571 | if (!set->mode) |
572 | set->fb = NULL; |
||
573 | |||
574 | if (set->fb) { |
||
575 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
||
576 | set->crtc->base.id, set->fb->base.id, |
||
1123 | serge | 577 | (int)set->num_connectors, set->x, set->y); |
1963 | serge | 578 | } else { |
579 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
||
3031 | serge | 580 | return drm_crtc_helper_disable(set->crtc); |
1963 | serge | 581 | } |
1123 | serge | 582 | |
583 | dev = set->crtc->dev; |
||
584 | |||
1179 | serge | 585 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
586 | * connector data. */ |
||
587 | save_crtcs = kzalloc(dev->mode_config.num_crtc * |
||
588 | sizeof(struct drm_crtc), GFP_KERNEL); |
||
1123 | serge | 589 | if (!save_crtcs) |
590 | return -ENOMEM; |
||
591 | |||
1179 | serge | 592 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
593 | sizeof(struct drm_encoder), GFP_KERNEL); |
||
1123 | serge | 594 | if (!save_encoders) { |
595 | kfree(save_crtcs); |
||
596 | return -ENOMEM; |
||
597 | } |
||
598 | |||
1179 | serge | 599 | save_connectors = kzalloc(dev->mode_config.num_connector * |
600 | sizeof(struct drm_connector), GFP_KERNEL); |
||
601 | if (!save_connectors) { |
||
602 | kfree(save_crtcs); |
||
603 | kfree(save_encoders); |
||
604 | return -ENOMEM; |
||
605 | } |
||
606 | |||
607 | /* Copy data. Note that driver private data is not affected. |
||
608 | * Should anything bad happen only the expected state is |
||
609 | * restored, not the drivers personal bookkeeping. |
||
610 | */ |
||
611 | count = 0; |
||
612 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
613 | save_crtcs[count++] = *crtc; |
||
614 | } |
||
615 | |||
616 | count = 0; |
||
617 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
618 | save_encoders[count++] = *encoder; |
||
619 | } |
||
620 | |||
621 | count = 0; |
||
622 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
623 | save_connectors[count++] = *connector; |
||
624 | } |
||
625 | |||
3031 | serge | 626 | save_set.crtc = set->crtc; |
627 | save_set.mode = &set->crtc->mode; |
||
628 | save_set.x = set->crtc->x; |
||
629 | save_set.y = set->crtc->y; |
||
630 | save_set.fb = set->crtc->fb; |
||
631 | |||
1123 | serge | 632 | /* We should be able to check here if the fb has the same properties |
633 | * and then just flip_or_move it */ |
||
634 | if (set->crtc->fb != set->fb) { |
||
635 | /* If we have no fb then treat it as a full mode set */ |
||
636 | if (set->crtc->fb == NULL) { |
||
1179 | serge | 637 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
1123 | serge | 638 | mode_changed = true; |
1179 | serge | 639 | } else if (set->fb == NULL) { |
640 | mode_changed = true; |
||
2160 | serge | 641 | } else if (set->fb->depth != set->crtc->fb->depth) { |
642 | mode_changed = true; |
||
643 | } else if (set->fb->bits_per_pixel != |
||
644 | set->crtc->fb->bits_per_pixel) { |
||
645 | mode_changed = true; |
||
1430 | serge | 646 | } else |
1123 | serge | 647 | fb_changed = true; |
648 | } |
||
649 | |||
650 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
||
651 | fb_changed = true; |
||
652 | |||
653 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
||
1179 | serge | 654 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
1123 | serge | 655 | drm_mode_debug_printmodeline(&set->crtc->mode); |
656 | drm_mode_debug_printmodeline(set->mode); |
||
657 | mode_changed = true; |
||
658 | } |
||
659 | |||
660 | /* a) traverse passed in connector list and get encoders for them */ |
||
661 | count = 0; |
||
662 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
663 | struct drm_connector_helper_funcs *connector_funcs = |
||
664 | connector->helper_private; |
||
665 | new_encoder = connector->encoder; |
||
666 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
667 | if (set->connectors[ro] == connector) { |
||
668 | new_encoder = connector_funcs->best_encoder(connector); |
||
669 | /* if we can't get an encoder for a connector |
||
670 | we are setting now - then fail */ |
||
671 | if (new_encoder == NULL) |
||
672 | /* don't break so fail path works correct */ |
||
673 | fail = 1; |
||
674 | break; |
||
675 | } |
||
676 | } |
||
677 | |||
678 | if (new_encoder != connector->encoder) { |
||
1179 | serge | 679 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
1123 | serge | 680 | mode_changed = true; |
1179 | serge | 681 | /* If the encoder is reused for another connector, then |
682 | * the appropriate crtc will be set later. |
||
683 | */ |
||
684 | if (connector->encoder) |
||
685 | connector->encoder->crtc = NULL; |
||
1123 | serge | 686 | connector->encoder = new_encoder; |
687 | } |
||
688 | } |
||
689 | |||
690 | if (fail) { |
||
691 | ret = -EINVAL; |
||
1179 | serge | 692 | goto fail; |
1123 | serge | 693 | } |
694 | |||
695 | count = 0; |
||
696 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
697 | if (!connector->encoder) |
||
698 | continue; |
||
699 | |||
700 | if (connector->encoder->crtc == set->crtc) |
||
701 | new_crtc = NULL; |
||
702 | else |
||
703 | new_crtc = connector->encoder->crtc; |
||
704 | |||
705 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
706 | if (set->connectors[ro] == connector) |
||
707 | new_crtc = set->crtc; |
||
708 | } |
||
709 | |||
710 | /* Make sure the new CRTC will work with the encoder */ |
||
711 | if (new_crtc && |
||
712 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
||
713 | ret = -EINVAL; |
||
1179 | serge | 714 | goto fail; |
1123 | serge | 715 | } |
716 | if (new_crtc != connector->encoder->crtc) { |
||
1179 | serge | 717 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
1123 | serge | 718 | mode_changed = true; |
719 | connector->encoder->crtc = new_crtc; |
||
720 | } |
||
1963 | serge | 721 | if (new_crtc) { |
722 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
||
723 | connector->base.id, drm_get_connector_name(connector), |
||
724 | new_crtc->base.id); |
||
725 | } else { |
||
726 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
||
727 | connector->base.id, drm_get_connector_name(connector)); |
||
728 | } |
||
1123 | serge | 729 | } |
730 | |||
731 | /* mode_set_base is not a required function */ |
||
732 | if (fb_changed && !crtc_funcs->mode_set_base) |
||
733 | mode_changed = true; |
||
734 | |||
735 | if (mode_changed) { |
||
1963 | serge | 736 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
737 | if (set->crtc->enabled) { |
||
1179 | serge | 738 | DRM_DEBUG_KMS("attempting to set mode from" |
739 | " userspace\n"); |
||
1123 | serge | 740 | drm_mode_debug_printmodeline(set->mode); |
1963 | serge | 741 | old_fb = set->crtc->fb; |
742 | set->crtc->fb = set->fb; |
||
1123 | serge | 743 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
744 | set->x, set->y, |
||
745 | old_fb)) { |
||
1963 | serge | 746 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
747 | set->crtc->base.id); |
||
748 | set->crtc->fb = old_fb; |
||
1123 | serge | 749 | ret = -EINVAL; |
1179 | serge | 750 | goto fail; |
1123 | serge | 751 | } |
1963 | serge | 752 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
753 | for (i = 0; i < set->num_connectors; i++) { |
||
754 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, |
||
755 | drm_get_connector_name(set->connectors[i])); |
||
3031 | serge | 756 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
1963 | serge | 757 | } |
1123 | serge | 758 | } |
759 | drm_helper_disable_unused_functions(dev); |
||
760 | } else if (fb_changed) { |
||
1179 | serge | 761 | set->crtc->x = set->x; |
762 | set->crtc->y = set->y; |
||
763 | |||
1123 | serge | 764 | old_fb = set->crtc->fb; |
765 | if (set->crtc->fb != set->fb) |
||
766 | set->crtc->fb = set->fb; |
||
767 | ret = crtc_funcs->mode_set_base(set->crtc, |
||
768 | set->x, set->y, old_fb); |
||
1963 | serge | 769 | if (ret != 0) { |
770 | set->crtc->fb = old_fb; |
||
1179 | serge | 771 | goto fail; |
1123 | serge | 772 | } |
1963 | serge | 773 | } |
1123 | serge | 774 | |
1179 | serge | 775 | kfree(save_connectors); |
1123 | serge | 776 | kfree(save_encoders); |
777 | kfree(save_crtcs); |
||
778 | return 0; |
||
779 | |||
1179 | serge | 780 | fail: |
781 | /* Restore all previous data. */ |
||
1123 | serge | 782 | count = 0; |
1179 | serge | 783 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
784 | *crtc = save_crtcs[count++]; |
||
785 | } |
||
1123 | serge | 786 | |
1179 | serge | 787 | count = 0; |
788 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
789 | *encoder = save_encoders[count++]; |
||
1123 | serge | 790 | } |
1179 | serge | 791 | |
1123 | serge | 792 | count = 0; |
793 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1179 | serge | 794 | *connector = save_connectors[count++]; |
1123 | serge | 795 | } |
1179 | serge | 796 | |
3031 | serge | 797 | /* Try to restore the config */ |
798 | if (mode_changed && |
||
799 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
||
800 | save_set.y, save_set.fb)) |
||
801 | DRM_ERROR("failed to restore config after modeset failure\n"); |
||
802 | |||
1179 | serge | 803 | kfree(save_connectors); |
1123 | serge | 804 | kfree(save_encoders); |
1179 | serge | 805 | kfree(save_crtcs); |
1123 | serge | 806 | return ret; |
807 | } |
||
808 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
||
809 | |||
810 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
||
811 | { |
||
812 | int dpms = DRM_MODE_DPMS_OFF; |
||
813 | struct drm_connector *connector; |
||
814 | struct drm_device *dev = encoder->dev; |
||
815 | |||
816 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
817 | if (connector->encoder == encoder) |
||
818 | if (connector->dpms < dpms) |
||
819 | dpms = connector->dpms; |
||
820 | return dpms; |
||
821 | } |
||
822 | |||
823 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
||
824 | { |
||
825 | int dpms = DRM_MODE_DPMS_OFF; |
||
826 | struct drm_connector *connector; |
||
827 | struct drm_device *dev = crtc->dev; |
||
828 | |||
829 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
830 | if (connector->encoder && connector->encoder->crtc == crtc) |
||
831 | if (connector->dpms < dpms) |
||
832 | dpms = connector->dpms; |
||
833 | return dpms; |
||
834 | } |
||
835 | |||
836 | /** |
||
3192 | Serge | 837 | * drm_helper_connector_dpms() - connector dpms helper implementation |
838 | * @connector: affected connector |
||
839 | * @mode: DPMS mode |
||
1123 | serge | 840 | * |
3192 | Serge | 841 | * This is the main helper function provided by the crtc helper framework for |
842 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
||
843 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() |
||
844 | * callback provided by the driver appropriately. |
||
1123 | serge | 845 | */ |
846 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
||
847 | { |
||
848 | struct drm_encoder *encoder = connector->encoder; |
||
849 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
||
850 | int old_dpms; |
||
851 | |||
852 | if (mode == connector->dpms) |
||
853 | return; |
||
854 | |||
855 | old_dpms = connector->dpms; |
||
856 | connector->dpms = mode; |
||
857 | |||
858 | /* from off to on, do crtc then encoder */ |
||
859 | if (mode < old_dpms) { |
||
860 | if (crtc) { |
||
861 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
862 | if (crtc_funcs->dpms) |
||
863 | (*crtc_funcs->dpms) (crtc, |
||
864 | drm_helper_choose_crtc_dpms(crtc)); |
||
865 | } |
||
866 | if (encoder) { |
||
867 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
868 | if (encoder_funcs->dpms) |
||
869 | (*encoder_funcs->dpms) (encoder, |
||
870 | drm_helper_choose_encoder_dpms(encoder)); |
||
871 | } |
||
872 | } |
||
873 | |||
874 | /* from on to off, do encoder then crtc */ |
||
875 | if (mode > old_dpms) { |
||
876 | if (encoder) { |
||
877 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
878 | if (encoder_funcs->dpms) |
||
879 | (*encoder_funcs->dpms) (encoder, |
||
880 | drm_helper_choose_encoder_dpms(encoder)); |
||
881 | } |
||
882 | if (crtc) { |
||
883 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
884 | if (crtc_funcs->dpms) |
||
885 | (*crtc_funcs->dpms) (crtc, |
||
886 | drm_helper_choose_crtc_dpms(crtc)); |
||
887 | } |
||
888 | } |
||
889 | |||
890 | return; |
||
891 | } |
||
892 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
||
893 | |||
894 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
||
3031 | serge | 895 | struct drm_mode_fb_cmd2 *mode_cmd) |
1123 | serge | 896 | { |
3031 | serge | 897 | int i; |
898 | |||
1123 | serge | 899 | fb->width = mode_cmd->width; |
900 | fb->height = mode_cmd->height; |
||
3031 | serge | 901 | for (i = 0; i < 4; i++) { |
902 | fb->pitches[i] = mode_cmd->pitches[i]; |
||
903 | fb->offsets[i] = mode_cmd->offsets[i]; |
||
904 | } |
||
905 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
||
906 | &fb->bits_per_pixel); |
||
907 | fb->pixel_format = mode_cmd->pixel_format; |
||
1123 | serge | 908 | |
909 | return 0; |
||
910 | } |
||
911 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
||
912 | |||
913 | int drm_helper_resume_force_mode(struct drm_device *dev) |
||
914 | { |
||
915 | struct drm_crtc *crtc; |
||
1404 | serge | 916 | struct drm_encoder *encoder; |
917 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
918 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
1123 | serge | 919 | int ret; |
920 | |||
921 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
922 | |||
1179 | serge | 923 | if (!crtc->enabled) |
924 | continue; |
||
1123 | serge | 925 | |
1179 | serge | 926 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1123 | serge | 927 | crtc->x, crtc->y, crtc->fb); |
928 | |||
929 | if (ret == false) |
||
930 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
||
1404 | serge | 931 | |
932 | /* Turn off outputs that were already powered off */ |
||
933 | if (drm_helper_choose_crtc_dpms(crtc)) { |
||
934 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
935 | |||
936 | if(encoder->crtc != crtc) |
||
937 | continue; |
||
938 | |||
939 | encoder_funcs = encoder->helper_private; |
||
940 | if (encoder_funcs->dpms) |
||
941 | (*encoder_funcs->dpms) (encoder, |
||
942 | drm_helper_choose_encoder_dpms(encoder)); |
||
1963 | serge | 943 | } |
1404 | serge | 944 | |
945 | crtc_funcs = crtc->helper_private; |
||
946 | if (crtc_funcs->dpms) |
||
947 | (*crtc_funcs->dpms) (crtc, |
||
948 | drm_helper_choose_crtc_dpms(crtc)); |
||
949 | } |
||
950 | } |
||
1179 | serge | 951 | /* disable the unused connectors while restoring the modesetting */ |
952 | drm_helper_disable_unused_functions(dev); |
||
1123 | serge | 953 | return 0; |
954 | } |
||
955 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
||
1963 | serge | 956 | |
957 | #if 0 |
||
958 | |||
959 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
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960 | static void output_poll_execute(struct work_struct *work) |
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961 | { |
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962 | struct delayed_work *delayed_work = to_delayed_work(work); |
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963 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); |
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964 | struct drm_connector *connector; |
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965 | enum drm_connector_status old_status; |
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966 | bool repoll = false, changed = false; |
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967 | |||
968 | if (!drm_kms_helper_poll) |
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969 | return; |
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970 | |||
971 | mutex_lock(&dev->mode_config.mutex); |
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972 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
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973 | |||
3192 | Serge | 974 | /* Ignore forced connectors. */ |
975 | if (connector->force) |
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1963 | serge | 976 | continue; |
977 | |||
3192 | Serge | 978 | /* Ignore HPD capable connectors and connectors where we don't |
979 | * want any hotplug detection at all for polling. */ |
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980 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) |
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981 | continue; |
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982 | |||
1963 | serge | 983 | repoll = true; |
984 | |||
985 | old_status = connector->status; |
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986 | /* if we are connected and don't want to poll for disconnect |
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987 | skip it */ |
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988 | if (old_status == connector_status_connected && |
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3192 | Serge | 989 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
1963 | serge | 990 | continue; |
991 | |||
992 | connector->status = connector->funcs->detect(connector, false); |
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993 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
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994 | connector->base.id, |
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995 | drm_get_connector_name(connector), |
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996 | old_status, connector->status); |
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997 | if (old_status != connector->status) |
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998 | changed = true; |
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999 | } |
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1000 | |||
1001 | mutex_unlock(&dev->mode_config.mutex); |
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1002 | |||
3192 | Serge | 1003 | if (changed) |
1004 | drm_kms_helper_hotplug_event(dev); |
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1963 | serge | 1005 | |
1006 | if (repoll) |
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3031 | serge | 1007 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
1963 | serge | 1008 | } |
1009 | |||
1010 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
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1011 | { |
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1012 | if (!dev->mode_config.poll_enabled) |
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1013 | return; |
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1014 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
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1015 | } |
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1016 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); |
||
1017 | |||
1018 | void drm_kms_helper_poll_enable(struct drm_device *dev) |
||
1019 | { |
||
1020 | bool poll = false; |
||
1021 | struct drm_connector *connector; |
||
1022 | |||
1023 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
||
1024 | return; |
||
1025 | |||
1026 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
3192 | Serge | 1027 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1028 | DRM_CONNECTOR_POLL_DISCONNECT)) |
||
1963 | serge | 1029 | poll = true; |
1030 | } |
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1031 | |||
1032 | if (poll) |
||
3031 | serge | 1033 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
1963 | serge | 1034 | } |
1035 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
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1036 | |||
1037 | void drm_kms_helper_poll_init(struct drm_device *dev) |
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1038 | { |
||
1039 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
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1040 | dev->mode_config.poll_enabled = true; |
||
1041 | |||
1042 | drm_kms_helper_poll_enable(dev); |
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1043 | } |
||
1044 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
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1045 | |||
1046 | void drm_kms_helper_poll_fini(struct drm_device *dev) |
||
1047 | { |
||
1048 | drm_kms_helper_poll_disable(dev); |
||
1049 | } |
||
1050 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); |
||
1051 | |||
1052 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
||
1053 | { |
||
3192 | Serge | 1054 | struct drm_connector *connector; |
1055 | enum drm_connector_status old_status; |
||
1056 | bool changed = false; |
||
1057 | |||
1963 | serge | 1058 | if (!dev->mode_config.poll_enabled) |
1059 | return; |
||
1060 | |||
3192 | Serge | 1061 | mutex_lock(&dev->mode_config.mutex); |
1062 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1063 | |||
1064 | /* Only handle HPD capable connectors. */ |
||
1065 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) |
||
1066 | continue; |
||
1067 | |||
1068 | old_status = connector->status; |
||
1069 | |||
1070 | connector->status = connector->funcs->detect(connector, false); |
||
1071 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
||
1072 | connector->base.id, |
||
1073 | drm_get_connector_name(connector), |
||
1074 | old_status, connector->status); |
||
1075 | if (old_status != connector->status) |
||
1076 | changed = true; |
||
1077 | } |
||
1078 | |||
1079 | mutex_unlock(&dev->mode_config.mutex); |
||
1080 | |||
1081 | if (changed) |
||
1082 | drm_kms_helper_hotplug_event(dev); |
||
1963 | serge | 1083 | } |
1084 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |
||
1085 | |||
1086 | #endif>>>>>>>=><=> |