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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; |
3480 | Serge | 72 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); |
1963 | serge | 73 | |
1123 | serge | 74 | static void drm_mode_validate_flag(struct drm_connector *connector, |
75 | int flags) |
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76 | { |
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3031 | serge | 77 | struct drm_display_mode *mode; |
1123 | serge | 78 | |
79 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) |
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80 | return; |
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81 | |||
3031 | serge | 82 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 83 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
84 | !(flags & DRM_MODE_FLAG_INTERLACE)) |
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85 | mode->status = MODE_NO_INTERLACE; |
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86 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && |
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87 | !(flags & DRM_MODE_FLAG_DBLSCAN)) |
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88 | mode->status = MODE_NO_DBLESCAN; |
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89 | } |
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90 | |||
91 | return; |
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92 | } |
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93 | |||
94 | /** |
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1963 | serge | 95 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
3192 | Serge | 96 | * @connector: connector to probe |
1123 | serge | 97 | * @maxX: max width for modes |
98 | * @maxY: max height for modes |
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99 | * |
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100 | * LOCKING: |
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101 | * Caller must hold mode config lock. |
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102 | * |
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3192 | Serge | 103 | * Based on the helper callbacks implemented by @connector try to detect all |
104 | * valid modes. Modes will first be added to the connector's probed_modes list, |
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105 | * then culled (based on validity and the @maxX, @maxY parameters) and put into |
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106 | * the normal modes list. |
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1123 | serge | 107 | * |
3192 | Serge | 108 | * Intended to be use as a generic implementation of the ->probe() @connector |
109 | * callback for drivers that use the crtc helpers for output mode filtering and |
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110 | * detection. |
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1123 | serge | 111 | * |
112 | * RETURNS: |
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113 | * Number of modes found on @connector. |
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114 | */ |
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115 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
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116 | uint32_t maxX, uint32_t maxY) |
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117 | { |
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118 | struct drm_device *dev = connector->dev; |
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3031 | serge | 119 | struct drm_display_mode *mode; |
1123 | serge | 120 | struct drm_connector_helper_funcs *connector_funcs = |
121 | connector->helper_private; |
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122 | int count = 0; |
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123 | int mode_flags = 0; |
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3764 | Serge | 124 | bool verbose_prune = true; |
1123 | serge | 125 | |
1963 | serge | 126 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
127 | drm_get_connector_name(connector)); |
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1123 | serge | 128 | /* set all modes to the unverified state */ |
3031 | serge | 129 | list_for_each_entry(mode, &connector->modes, head) |
1123 | serge | 130 | mode->status = MODE_UNVERIFIED; |
131 | |||
1221 | serge | 132 | if (connector->force) { |
133 | if (connector->force == DRM_FORCE_ON) |
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134 | connector->status = connector_status_connected; |
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135 | else |
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136 | connector->status = connector_status_disconnected; |
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137 | if (connector->funcs->force) |
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138 | connector->funcs->force(connector); |
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1963 | serge | 139 | } else { |
140 | connector->status = connector->funcs->detect(connector, true); |
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141 | } |
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1123 | serge | 142 | |
3480 | Serge | 143 | /* Re-enable polling in case the global poll config changed. */ |
144 | if (drm_kms_helper_poll != dev->mode_config.poll_running) |
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145 | drm_kms_helper_poll_enable(dev); |
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146 | |||
147 | dev->mode_config.poll_running = drm_kms_helper_poll; |
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148 | |||
1123 | serge | 149 | if (connector->status == connector_status_disconnected) { |
1963 | serge | 150 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
151 | connector->base.id, drm_get_connector_name(connector)); |
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152 | drm_mode_connector_update_edid_property(connector, NULL); |
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3764 | Serge | 153 | verbose_prune = false; |
1179 | serge | 154 | goto prune; |
1123 | serge | 155 | } |
156 | |||
3031 | serge | 157 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
158 | count = drm_load_edid_firmware(connector); |
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159 | if (count == 0) |
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160 | #endif |
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1123 | serge | 161 | count = (*connector_funcs->get_modes)(connector); |
3031 | serge | 162 | |
1963 | serge | 163 | if (count == 0 && connector->status == connector_status_connected) |
1321 | serge | 164 | count = drm_add_modes_noedid(connector, 1024, 768); |
1963 | serge | 165 | if (count == 0) |
166 | goto prune; |
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1123 | serge | 167 | |
168 | drm_mode_connector_list_update(connector); |
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169 | |||
170 | if (maxX && maxY) |
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171 | drm_mode_validate_size(dev, &connector->modes, maxX, |
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172 | maxY, 0); |
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173 | |||
174 | if (connector->interlace_allowed) |
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175 | mode_flags |= DRM_MODE_FLAG_INTERLACE; |
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176 | if (connector->doublescan_allowed) |
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177 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; |
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178 | drm_mode_validate_flag(connector, mode_flags); |
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179 | |||
3031 | serge | 180 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 181 | if (mode->status == MODE_OK) |
182 | mode->status = connector_funcs->mode_valid(connector, |
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183 | mode); |
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184 | } |
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185 | |||
1179 | serge | 186 | prune: |
3764 | Serge | 187 | drm_mode_prune_invalid(dev, &connector->modes, verbose_prune); |
1123 | serge | 188 | |
189 | if (list_empty(&connector->modes)) |
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190 | return 0; |
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191 | |||
192 | drm_mode_sort(&connector->modes); |
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193 | |||
1963 | serge | 194 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
1179 | serge | 195 | drm_get_connector_name(connector)); |
3031 | serge | 196 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 197 | mode->vrefresh = drm_mode_vrefresh(mode); |
198 | |||
199 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
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200 | drm_mode_debug_printmodeline(mode); |
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201 | } |
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202 | |||
203 | return count; |
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204 | } |
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205 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
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206 | |||
207 | /** |
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208 | * drm_helper_encoder_in_use - check if a given encoder is in use |
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209 | * @encoder: encoder to check |
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210 | * |
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211 | * LOCKING: |
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212 | * Caller must hold mode config lock. |
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213 | * |
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214 | * Walk @encoders's DRM device's mode_config and see if it's in use. |
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215 | * |
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216 | * RETURNS: |
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217 | * True if @encoder is part of the mode_config, false otherwise. |
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218 | */ |
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219 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
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220 | { |
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221 | struct drm_connector *connector; |
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222 | struct drm_device *dev = encoder->dev; |
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223 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
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224 | if (connector->encoder == encoder) |
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225 | return true; |
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226 | return false; |
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227 | } |
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228 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
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229 | |||
230 | /** |
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231 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
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232 | * @crtc: CRTC to check |
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233 | * |
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234 | * LOCKING: |
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235 | * Caller must hold mode config lock. |
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236 | * |
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237 | * Walk @crtc's DRM device's mode_config and see if it's in use. |
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238 | * |
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239 | * RETURNS: |
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240 | * True if @crtc is part of the mode_config, false otherwise. |
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241 | */ |
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242 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
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243 | { |
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244 | struct drm_encoder *encoder; |
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245 | struct drm_device *dev = crtc->dev; |
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246 | /* FIXME: Locking around list access? */ |
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247 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
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248 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
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249 | return true; |
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250 | return false; |
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251 | } |
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252 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
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253 | |||
1963 | serge | 254 | static void |
255 | drm_encoder_disable(struct drm_encoder *encoder) |
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256 | { |
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257 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
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258 | |||
259 | if (encoder_funcs->disable) |
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260 | (*encoder_funcs->disable)(encoder); |
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261 | else |
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262 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
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263 | } |
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264 | |||
1123 | serge | 265 | /** |
1404 | serge | 266 | * drm_helper_disable_unused_functions - disable unused objects |
1123 | serge | 267 | * @dev: DRM device |
268 | * |
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269 | * LOCKING: |
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270 | * Caller must hold mode config lock. |
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271 | * |
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272 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
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273 | * by calling its dpms function, which should power it off. |
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274 | */ |
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275 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
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276 | { |
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277 | struct drm_encoder *encoder; |
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1179 | serge | 278 | struct drm_connector *connector; |
1123 | serge | 279 | struct drm_crtc *crtc; |
280 | |||
1179 | serge | 281 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
282 | if (!connector->encoder) |
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283 | continue; |
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284 | if (connector->status == connector_status_disconnected) |
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285 | connector->encoder = NULL; |
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286 | } |
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287 | |||
1123 | serge | 288 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
1179 | serge | 289 | if (!drm_helper_encoder_in_use(encoder)) { |
1963 | serge | 290 | drm_encoder_disable(encoder); |
1179 | serge | 291 | /* disconnector encoder from any connector */ |
292 | encoder->crtc = NULL; |
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293 | } |
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1123 | serge | 294 | } |
295 | |||
296 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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297 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
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298 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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299 | if (!crtc->enabled) { |
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1963 | serge | 300 | if (crtc_funcs->disable) |
301 | (*crtc_funcs->disable)(crtc); |
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302 | else |
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303 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
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1123 | serge | 304 | crtc->fb = NULL; |
305 | } |
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306 | } |
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307 | } |
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308 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
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309 | |||
310 | /** |
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311 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? |
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312 | * @encoder: encoder to test |
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313 | * @crtc: crtc to test |
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314 | * |
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315 | * Return false if @encoder can't be driven by @crtc, true otherwise. |
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316 | */ |
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317 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, |
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318 | struct drm_crtc *crtc) |
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319 | { |
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320 | struct drm_device *dev; |
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321 | struct drm_crtc *tmp; |
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322 | int crtc_mask = 1; |
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323 | |||
1963 | serge | 324 | WARN(!crtc, "checking null crtc?\n"); |
1123 | serge | 325 | |
326 | dev = crtc->dev; |
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327 | |||
328 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { |
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329 | if (tmp == crtc) |
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330 | break; |
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331 | crtc_mask <<= 1; |
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332 | } |
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333 | |||
334 | if (encoder->possible_crtcs & crtc_mask) |
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335 | return true; |
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336 | return false; |
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337 | } |
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338 | |||
339 | /* |
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340 | * Check the CRTC we're going to map each output to vs. its current |
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341 | * CRTC. If they don't match, we have to disable the output and the CRTC |
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342 | * since the driver will have to re-route things. |
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343 | */ |
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344 | static void |
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345 | drm_crtc_prepare_encoders(struct drm_device *dev) |
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346 | { |
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347 | struct drm_encoder_helper_funcs *encoder_funcs; |
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348 | struct drm_encoder *encoder; |
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349 | |||
350 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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351 | encoder_funcs = encoder->helper_private; |
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352 | /* Disable unused encoders */ |
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353 | if (encoder->crtc == NULL) |
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1963 | serge | 354 | drm_encoder_disable(encoder); |
1123 | serge | 355 | /* Disable encoders whose CRTC is about to change */ |
356 | if (encoder_funcs->get_crtc && |
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357 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
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1963 | serge | 358 | drm_encoder_disable(encoder); |
1123 | serge | 359 | } |
360 | } |
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361 | |||
362 | /** |
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3192 | Serge | 363 | * drm_crtc_helper_set_mode - internal helper to set a mode |
1123 | serge | 364 | * @crtc: CRTC to program |
365 | * @mode: mode to use |
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3192 | Serge | 366 | * @x: horizontal offset into the surface |
367 | * @y: vertical offset into the surface |
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368 | * @old_fb: old framebuffer, for cleanup |
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1123 | serge | 369 | * |
370 | * LOCKING: |
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371 | * Caller must hold mode config lock. |
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372 | * |
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373 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
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3192 | Serge | 374 | * to fixup or reject the mode prior to trying to set it. This is an internal |
375 | * helper that drivers could e.g. use to update properties that require the |
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376 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
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377 | * example for changing whether audio is enabled on a hdmi link or for changing |
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378 | * panel fitter or dither attributes. It is also called by the |
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379 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
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380 | * sequence. |
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1123 | serge | 381 | * |
382 | * RETURNS: |
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383 | * True if the mode was set successfully, or false otherwise. |
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384 | */ |
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385 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
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386 | struct drm_display_mode *mode, |
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387 | int x, int y, |
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388 | struct drm_framebuffer *old_fb) |
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389 | { |
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390 | struct drm_device *dev = crtc->dev; |
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1963 | serge | 391 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
1123 | serge | 392 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
393 | struct drm_encoder_helper_funcs *encoder_funcs; |
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394 | int saved_x, saved_y; |
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395 | struct drm_encoder *encoder; |
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396 | bool ret = true; |
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397 | |||
398 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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399 | if (!crtc->enabled) |
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400 | return true; |
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401 | |||
1963 | serge | 402 | adjusted_mode = drm_mode_duplicate(dev, mode); |
3031 | serge | 403 | if (!adjusted_mode) |
404 | return false; |
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1963 | serge | 405 | |
406 | saved_hwmode = crtc->hwmode; |
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1123 | serge | 407 | saved_mode = crtc->mode; |
408 | saved_x = crtc->x; |
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409 | saved_y = crtc->y; |
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410 | |||
411 | /* Update crtc values up front so the driver can rely on them for mode |
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412 | * setting. |
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413 | */ |
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414 | crtc->mode = *mode; |
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415 | crtc->x = x; |
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416 | crtc->y = y; |
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417 | |||
418 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
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419 | * adjust it according to limitations or connector properties, and also |
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420 | * a chance to reject the mode entirely. |
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421 | */ |
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422 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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423 | |||
424 | if (encoder->crtc != crtc) |
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425 | continue; |
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426 | encoder_funcs = encoder->helper_private; |
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427 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
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428 | adjusted_mode))) { |
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3031 | serge | 429 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
1123 | serge | 430 | goto done; |
431 | } |
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432 | } |
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433 | |||
434 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
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3031 | serge | 435 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
1123 | serge | 436 | goto done; |
437 | } |
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1963 | serge | 438 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
1123 | serge | 439 | |
440 | /* Prepare the encoders and CRTCs before setting the mode. */ |
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441 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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442 | |||
443 | if (encoder->crtc != crtc) |
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444 | continue; |
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445 | encoder_funcs = encoder->helper_private; |
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446 | /* Disable the encoders as the first thing we do. */ |
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447 | encoder_funcs->prepare(encoder); |
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448 | } |
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449 | |||
450 | drm_crtc_prepare_encoders(dev); |
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451 | |||
452 | crtc_funcs->prepare(crtc); |
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453 | |||
454 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
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455 | * on the DPLL. |
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456 | */ |
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457 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
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458 | if (!ret) |
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459 | goto done; |
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460 | |||
461 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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462 | |||
463 | if (encoder->crtc != crtc) |
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464 | continue; |
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465 | |||
1963 | serge | 466 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
467 | encoder->base.id, drm_get_encoder_name(encoder), |
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468 | mode->base.id, mode->name); |
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1123 | serge | 469 | encoder_funcs = encoder->helper_private; |
470 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
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471 | } |
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472 | |||
473 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
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474 | crtc_funcs->commit(crtc); |
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475 | |||
476 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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477 | |||
478 | if (encoder->crtc != crtc) |
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479 | continue; |
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480 | |||
481 | encoder_funcs = encoder->helper_private; |
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482 | encoder_funcs->commit(encoder); |
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483 | |||
484 | } |
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485 | |||
1963 | serge | 486 | /* Store real post-adjustment hardware mode. */ |
487 | crtc->hwmode = *adjusted_mode; |
||
488 | |||
489 | /* Calculate and store various constants which |
||
490 | * are later needed by vblank and swap-completion |
||
491 | * timestamping. They are derived from true hwmode. |
||
492 | */ |
||
493 | drm_calc_timestamping_constants(crtc); |
||
494 | |||
1123 | serge | 495 | /* FIXME: add subpixel order */ |
496 | done: |
||
1963 | serge | 497 | drm_mode_destroy(dev, adjusted_mode); |
1123 | serge | 498 | if (!ret) { |
1963 | serge | 499 | crtc->hwmode = saved_hwmode; |
1123 | serge | 500 | crtc->mode = saved_mode; |
501 | crtc->x = saved_x; |
||
502 | crtc->y = saved_y; |
||
503 | } |
||
1179 | serge | 504 | |
1123 | serge | 505 | return ret; |
506 | } |
||
507 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
||
508 | |||
509 | |||
3031 | serge | 510 | static int |
511 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
||
512 | { |
||
513 | struct drm_device *dev = crtc->dev; |
||
514 | struct drm_connector *connector; |
||
515 | struct drm_encoder *encoder; |
||
516 | |||
517 | /* Decouple all encoders and their attached connectors from this crtc */ |
||
518 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
519 | if (encoder->crtc != crtc) |
||
520 | continue; |
||
521 | |||
522 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
523 | if (connector->encoder != encoder) |
||
524 | continue; |
||
525 | |||
526 | connector->encoder = NULL; |
||
527 | } |
||
528 | } |
||
529 | |||
530 | drm_helper_disable_unused_functions(dev); |
||
531 | return 0; |
||
532 | } |
||
533 | |||
1123 | serge | 534 | /** |
535 | * drm_crtc_helper_set_config - set a new config from userspace |
||
3192 | Serge | 536 | * @set: mode set configuration |
1123 | serge | 537 | * |
538 | * LOCKING: |
||
539 | * Caller must hold mode config lock. |
||
540 | * |
||
3192 | Serge | 541 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
542 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and |
||
543 | * enable it. This is the main helper functions for drivers that implement |
||
544 | * kernel mode setting with the crtc helper functions and the assorted |
||
545 | * ->prepare(), ->modeset() and ->commit() helper callbacks. |
||
1123 | serge | 546 | * |
547 | * RETURNS: |
||
3192 | Serge | 548 | * Returns 0 on success, -ERRNO on failure. |
1123 | serge | 549 | */ |
550 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
||
551 | { |
||
552 | struct drm_device *dev; |
||
1179 | serge | 553 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
554 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
||
1123 | serge | 555 | struct drm_framebuffer *old_fb = NULL; |
1179 | serge | 556 | bool mode_changed = false; /* if true do a full mode set */ |
557 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
||
558 | struct drm_connector *save_connectors, *connector; |
||
1123 | serge | 559 | int count = 0, ro, fail = 0; |
560 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
3031 | serge | 561 | struct drm_mode_set save_set; |
562 | int ret; |
||
1963 | serge | 563 | int i; |
1123 | serge | 564 | |
1179 | serge | 565 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 566 | |
567 | if (!set) |
||
568 | return -EINVAL; |
||
569 | |||
570 | if (!set->crtc) |
||
571 | return -EINVAL; |
||
572 | |||
573 | if (!set->crtc->helper_private) |
||
574 | return -EINVAL; |
||
575 | |||
576 | crtc_funcs = set->crtc->helper_private; |
||
577 | |||
1963 | serge | 578 | if (!set->mode) |
579 | set->fb = NULL; |
||
580 | |||
581 | if (set->fb) { |
||
582 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
||
583 | set->crtc->base.id, set->fb->base.id, |
||
1123 | serge | 584 | (int)set->num_connectors, set->x, set->y); |
1963 | serge | 585 | } else { |
586 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
||
3031 | serge | 587 | return drm_crtc_helper_disable(set->crtc); |
1963 | serge | 588 | } |
1123 | serge | 589 | |
590 | dev = set->crtc->dev; |
||
591 | |||
1179 | serge | 592 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
593 | * connector data. */ |
||
594 | save_crtcs = kzalloc(dev->mode_config.num_crtc * |
||
595 | sizeof(struct drm_crtc), GFP_KERNEL); |
||
1123 | serge | 596 | if (!save_crtcs) |
597 | return -ENOMEM; |
||
598 | |||
1179 | serge | 599 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
600 | sizeof(struct drm_encoder), GFP_KERNEL); |
||
1123 | serge | 601 | if (!save_encoders) { |
602 | kfree(save_crtcs); |
||
603 | return -ENOMEM; |
||
604 | } |
||
605 | |||
1179 | serge | 606 | save_connectors = kzalloc(dev->mode_config.num_connector * |
607 | sizeof(struct drm_connector), GFP_KERNEL); |
||
608 | if (!save_connectors) { |
||
609 | kfree(save_crtcs); |
||
610 | kfree(save_encoders); |
||
611 | return -ENOMEM; |
||
612 | } |
||
613 | |||
614 | /* Copy data. Note that driver private data is not affected. |
||
615 | * Should anything bad happen only the expected state is |
||
616 | * restored, not the drivers personal bookkeeping. |
||
617 | */ |
||
618 | count = 0; |
||
619 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
620 | save_crtcs[count++] = *crtc; |
||
621 | } |
||
622 | |||
623 | count = 0; |
||
624 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
625 | save_encoders[count++] = *encoder; |
||
626 | } |
||
627 | |||
628 | count = 0; |
||
629 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
630 | save_connectors[count++] = *connector; |
||
631 | } |
||
632 | |||
3031 | serge | 633 | save_set.crtc = set->crtc; |
634 | save_set.mode = &set->crtc->mode; |
||
635 | save_set.x = set->crtc->x; |
||
636 | save_set.y = set->crtc->y; |
||
637 | save_set.fb = set->crtc->fb; |
||
638 | |||
1123 | serge | 639 | /* We should be able to check here if the fb has the same properties |
640 | * and then just flip_or_move it */ |
||
641 | if (set->crtc->fb != set->fb) { |
||
642 | /* If we have no fb then treat it as a full mode set */ |
||
643 | if (set->crtc->fb == NULL) { |
||
1179 | serge | 644 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
1123 | serge | 645 | mode_changed = true; |
1179 | serge | 646 | } else if (set->fb == NULL) { |
647 | mode_changed = true; |
||
2160 | serge | 648 | } else if (set->fb->depth != set->crtc->fb->depth) { |
649 | mode_changed = true; |
||
650 | } else if (set->fb->bits_per_pixel != |
||
651 | set->crtc->fb->bits_per_pixel) { |
||
652 | mode_changed = true; |
||
3746 | Serge | 653 | } else if (set->fb->pixel_format != |
654 | set->crtc->fb->pixel_format) { |
||
655 | mode_changed = true; |
||
1430 | serge | 656 | } else |
1123 | serge | 657 | fb_changed = true; |
658 | } |
||
659 | |||
660 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
||
661 | fb_changed = true; |
||
662 | |||
663 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
||
1179 | serge | 664 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
1123 | serge | 665 | drm_mode_debug_printmodeline(&set->crtc->mode); |
666 | drm_mode_debug_printmodeline(set->mode); |
||
667 | mode_changed = true; |
||
668 | } |
||
669 | |||
670 | /* a) traverse passed in connector list and get encoders for them */ |
||
671 | count = 0; |
||
672 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
673 | struct drm_connector_helper_funcs *connector_funcs = |
||
674 | connector->helper_private; |
||
675 | new_encoder = connector->encoder; |
||
676 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
677 | if (set->connectors[ro] == connector) { |
||
678 | new_encoder = connector_funcs->best_encoder(connector); |
||
679 | /* if we can't get an encoder for a connector |
||
680 | we are setting now - then fail */ |
||
681 | if (new_encoder == NULL) |
||
682 | /* don't break so fail path works correct */ |
||
683 | fail = 1; |
||
684 | break; |
||
685 | } |
||
686 | } |
||
687 | |||
688 | if (new_encoder != connector->encoder) { |
||
1179 | serge | 689 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
1123 | serge | 690 | mode_changed = true; |
1179 | serge | 691 | /* If the encoder is reused for another connector, then |
692 | * the appropriate crtc will be set later. |
||
693 | */ |
||
694 | if (connector->encoder) |
||
695 | connector->encoder->crtc = NULL; |
||
1123 | serge | 696 | connector->encoder = new_encoder; |
697 | } |
||
698 | } |
||
699 | |||
700 | if (fail) { |
||
701 | ret = -EINVAL; |
||
1179 | serge | 702 | goto fail; |
1123 | serge | 703 | } |
704 | |||
705 | count = 0; |
||
706 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
707 | if (!connector->encoder) |
||
708 | continue; |
||
709 | |||
710 | if (connector->encoder->crtc == set->crtc) |
||
711 | new_crtc = NULL; |
||
712 | else |
||
713 | new_crtc = connector->encoder->crtc; |
||
714 | |||
715 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
716 | if (set->connectors[ro] == connector) |
||
717 | new_crtc = set->crtc; |
||
718 | } |
||
719 | |||
720 | /* Make sure the new CRTC will work with the encoder */ |
||
721 | if (new_crtc && |
||
722 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
||
723 | ret = -EINVAL; |
||
1179 | serge | 724 | goto fail; |
1123 | serge | 725 | } |
726 | if (new_crtc != connector->encoder->crtc) { |
||
1179 | serge | 727 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
1123 | serge | 728 | mode_changed = true; |
729 | connector->encoder->crtc = new_crtc; |
||
730 | } |
||
1963 | serge | 731 | if (new_crtc) { |
732 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
||
733 | connector->base.id, drm_get_connector_name(connector), |
||
734 | new_crtc->base.id); |
||
735 | } else { |
||
736 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
||
737 | connector->base.id, drm_get_connector_name(connector)); |
||
738 | } |
||
1123 | serge | 739 | } |
740 | |||
741 | /* mode_set_base is not a required function */ |
||
742 | if (fb_changed && !crtc_funcs->mode_set_base) |
||
743 | mode_changed = true; |
||
744 | |||
745 | if (mode_changed) { |
||
1963 | serge | 746 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
747 | if (set->crtc->enabled) { |
||
1179 | serge | 748 | DRM_DEBUG_KMS("attempting to set mode from" |
749 | " userspace\n"); |
||
1123 | serge | 750 | drm_mode_debug_printmodeline(set->mode); |
1963 | serge | 751 | old_fb = set->crtc->fb; |
752 | set->crtc->fb = set->fb; |
||
1123 | serge | 753 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
754 | set->x, set->y, |
||
755 | old_fb)) { |
||
1963 | serge | 756 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
757 | set->crtc->base.id); |
||
758 | set->crtc->fb = old_fb; |
||
1123 | serge | 759 | ret = -EINVAL; |
1179 | serge | 760 | goto fail; |
1123 | serge | 761 | } |
1963 | serge | 762 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
763 | for (i = 0; i < set->num_connectors; i++) { |
||
764 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, |
||
765 | drm_get_connector_name(set->connectors[i])); |
||
3031 | serge | 766 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
1963 | serge | 767 | } |
1123 | serge | 768 | } |
769 | drm_helper_disable_unused_functions(dev); |
||
770 | } else if (fb_changed) { |
||
1179 | serge | 771 | set->crtc->x = set->x; |
772 | set->crtc->y = set->y; |
||
773 | |||
1123 | serge | 774 | old_fb = set->crtc->fb; |
775 | if (set->crtc->fb != set->fb) |
||
776 | set->crtc->fb = set->fb; |
||
777 | ret = crtc_funcs->mode_set_base(set->crtc, |
||
778 | set->x, set->y, old_fb); |
||
1963 | serge | 779 | if (ret != 0) { |
780 | set->crtc->fb = old_fb; |
||
1179 | serge | 781 | goto fail; |
1123 | serge | 782 | } |
1963 | serge | 783 | } |
1123 | serge | 784 | |
1179 | serge | 785 | kfree(save_connectors); |
1123 | serge | 786 | kfree(save_encoders); |
787 | kfree(save_crtcs); |
||
788 | return 0; |
||
789 | |||
1179 | serge | 790 | fail: |
791 | /* Restore all previous data. */ |
||
1123 | serge | 792 | count = 0; |
1179 | serge | 793 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
794 | *crtc = save_crtcs[count++]; |
||
795 | } |
||
1123 | serge | 796 | |
1179 | serge | 797 | count = 0; |
798 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
799 | *encoder = save_encoders[count++]; |
||
1123 | serge | 800 | } |
1179 | serge | 801 | |
1123 | serge | 802 | count = 0; |
803 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1179 | serge | 804 | *connector = save_connectors[count++]; |
1123 | serge | 805 | } |
1179 | serge | 806 | |
3031 | serge | 807 | /* Try to restore the config */ |
808 | if (mode_changed && |
||
809 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
||
810 | save_set.y, save_set.fb)) |
||
811 | DRM_ERROR("failed to restore config after modeset failure\n"); |
||
812 | |||
1179 | serge | 813 | kfree(save_connectors); |
1123 | serge | 814 | kfree(save_encoders); |
1179 | serge | 815 | kfree(save_crtcs); |
1123 | serge | 816 | return ret; |
817 | } |
||
818 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
||
819 | |||
820 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
||
821 | { |
||
822 | int dpms = DRM_MODE_DPMS_OFF; |
||
823 | struct drm_connector *connector; |
||
824 | struct drm_device *dev = encoder->dev; |
||
825 | |||
826 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
827 | if (connector->encoder == encoder) |
||
828 | if (connector->dpms < dpms) |
||
829 | dpms = connector->dpms; |
||
830 | return dpms; |
||
831 | } |
||
832 | |||
833 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
||
834 | { |
||
835 | int dpms = DRM_MODE_DPMS_OFF; |
||
836 | struct drm_connector *connector; |
||
837 | struct drm_device *dev = crtc->dev; |
||
838 | |||
839 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
840 | if (connector->encoder && connector->encoder->crtc == crtc) |
||
841 | if (connector->dpms < dpms) |
||
842 | dpms = connector->dpms; |
||
843 | return dpms; |
||
844 | } |
||
845 | |||
846 | /** |
||
3192 | Serge | 847 | * drm_helper_connector_dpms() - connector dpms helper implementation |
848 | * @connector: affected connector |
||
849 | * @mode: DPMS mode |
||
1123 | serge | 850 | * |
3192 | Serge | 851 | * This is the main helper function provided by the crtc helper framework for |
852 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
||
853 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() |
||
854 | * callback provided by the driver appropriately. |
||
1123 | serge | 855 | */ |
856 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
||
857 | { |
||
858 | struct drm_encoder *encoder = connector->encoder; |
||
859 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
||
860 | int old_dpms; |
||
861 | |||
862 | if (mode == connector->dpms) |
||
863 | return; |
||
864 | |||
865 | old_dpms = connector->dpms; |
||
866 | connector->dpms = mode; |
||
867 | |||
868 | /* from off to on, do crtc then encoder */ |
||
869 | if (mode < old_dpms) { |
||
870 | if (crtc) { |
||
871 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
872 | if (crtc_funcs->dpms) |
||
873 | (*crtc_funcs->dpms) (crtc, |
||
874 | drm_helper_choose_crtc_dpms(crtc)); |
||
875 | } |
||
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 | } |
||
883 | |||
884 | /* from on to off, do encoder then crtc */ |
||
885 | if (mode > old_dpms) { |
||
886 | if (encoder) { |
||
887 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
888 | if (encoder_funcs->dpms) |
||
889 | (*encoder_funcs->dpms) (encoder, |
||
890 | drm_helper_choose_encoder_dpms(encoder)); |
||
891 | } |
||
892 | if (crtc) { |
||
893 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
894 | if (crtc_funcs->dpms) |
||
895 | (*crtc_funcs->dpms) (crtc, |
||
896 | drm_helper_choose_crtc_dpms(crtc)); |
||
897 | } |
||
898 | } |
||
899 | |||
900 | return; |
||
901 | } |
||
902 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
||
903 | |||
904 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
||
3031 | serge | 905 | struct drm_mode_fb_cmd2 *mode_cmd) |
1123 | serge | 906 | { |
3031 | serge | 907 | int i; |
908 | |||
1123 | serge | 909 | fb->width = mode_cmd->width; |
910 | fb->height = mode_cmd->height; |
||
3031 | serge | 911 | for (i = 0; i < 4; i++) { |
912 | fb->pitches[i] = mode_cmd->pitches[i]; |
||
913 | fb->offsets[i] = mode_cmd->offsets[i]; |
||
914 | } |
||
915 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
||
916 | &fb->bits_per_pixel); |
||
917 | fb->pixel_format = mode_cmd->pixel_format; |
||
1123 | serge | 918 | |
919 | return 0; |
||
920 | } |
||
921 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
||
922 | |||
923 | int drm_helper_resume_force_mode(struct drm_device *dev) |
||
924 | { |
||
925 | struct drm_crtc *crtc; |
||
1404 | serge | 926 | struct drm_encoder *encoder; |
927 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
928 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
1123 | serge | 929 | int ret; |
930 | |||
931 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
932 | |||
1179 | serge | 933 | if (!crtc->enabled) |
934 | continue; |
||
1123 | serge | 935 | |
1179 | serge | 936 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1123 | serge | 937 | crtc->x, crtc->y, crtc->fb); |
938 | |||
939 | if (ret == false) |
||
940 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
||
1404 | serge | 941 | |
942 | /* Turn off outputs that were already powered off */ |
||
943 | if (drm_helper_choose_crtc_dpms(crtc)) { |
||
944 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
945 | |||
946 | if(encoder->crtc != crtc) |
||
947 | continue; |
||
948 | |||
949 | encoder_funcs = encoder->helper_private; |
||
950 | if (encoder_funcs->dpms) |
||
951 | (*encoder_funcs->dpms) (encoder, |
||
952 | drm_helper_choose_encoder_dpms(encoder)); |
||
1963 | serge | 953 | } |
1404 | serge | 954 | |
955 | crtc_funcs = crtc->helper_private; |
||
956 | if (crtc_funcs->dpms) |
||
957 | (*crtc_funcs->dpms) (crtc, |
||
958 | drm_helper_choose_crtc_dpms(crtc)); |
||
959 | } |
||
960 | } |
||
1179 | serge | 961 | /* disable the unused connectors while restoring the modesetting */ |
962 | drm_helper_disable_unused_functions(dev); |
||
1123 | serge | 963 | return 0; |
964 | } |
||
965 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
||
1963 | serge | 966 | |
3480 | Serge | 967 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
968 | { |
||
969 | /* send a uevent + call fbdev */ |
||
970 | if (dev->mode_config.funcs->output_poll_changed) |
||
971 | dev->mode_config.funcs->output_poll_changed(dev); |
||
972 | } |
||
973 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); |
||
1963 | serge | 974 | |
975 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
||
976 | static void output_poll_execute(struct work_struct *work) |
||
977 | { |
||
978 | struct delayed_work *delayed_work = to_delayed_work(work); |
||
979 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); |
||
980 | struct drm_connector *connector; |
||
981 | enum drm_connector_status old_status; |
||
982 | bool repoll = false, changed = false; |
||
983 | |||
984 | if (!drm_kms_helper_poll) |
||
985 | return; |
||
986 | |||
987 | mutex_lock(&dev->mode_config.mutex); |
||
988 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
989 | |||
3192 | Serge | 990 | /* Ignore forced connectors. */ |
991 | if (connector->force) |
||
1963 | serge | 992 | continue; |
993 | |||
3192 | Serge | 994 | /* Ignore HPD capable connectors and connectors where we don't |
995 | * want any hotplug detection at all for polling. */ |
||
996 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) |
||
997 | continue; |
||
998 | |||
1963 | serge | 999 | repoll = true; |
1000 | |||
1001 | old_status = connector->status; |
||
1002 | /* if we are connected and don't want to poll for disconnect |
||
1003 | skip it */ |
||
1004 | if (old_status == connector_status_connected && |
||
3192 | Serge | 1005 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
1963 | serge | 1006 | continue; |
1007 | |||
1008 | connector->status = connector->funcs->detect(connector, false); |
||
3764 | Serge | 1009 | if (old_status != connector->status) { |
1010 | const char *old, *new; |
||
1011 | |||
1012 | old = drm_get_connector_status_name(old_status); |
||
1013 | new = drm_get_connector_status_name(connector->status); |
||
1014 | |||
1015 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " |
||
1016 | "status updated from %s to %s\n", |
||
1963 | serge | 1017 | connector->base.id, |
1018 | drm_get_connector_name(connector), |
||
3764 | Serge | 1019 | old, new); |
1020 | |||
1963 | serge | 1021 | changed = true; |
1022 | } |
||
3764 | Serge | 1023 | } |
1963 | serge | 1024 | |
1025 | mutex_unlock(&dev->mode_config.mutex); |
||
1026 | |||
3192 | Serge | 1027 | if (changed) |
1028 | drm_kms_helper_hotplug_event(dev); |
||
1963 | serge | 1029 | |
3480 | Serge | 1030 | // if (repoll) |
1031 | // schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
||
1963 | serge | 1032 | } |
1033 | |||
1034 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
||
1035 | { |
||
1036 | if (!dev->mode_config.poll_enabled) |
||
1037 | return; |
||
3480 | Serge | 1038 | // cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
1963 | serge | 1039 | } |
1040 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); |
||
1041 | |||
1042 | void drm_kms_helper_poll_enable(struct drm_device *dev) |
||
1043 | { |
||
1044 | bool poll = false; |
||
1045 | struct drm_connector *connector; |
||
1046 | |||
1047 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
||
1048 | return; |
||
1049 | |||
1050 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
3192 | Serge | 1051 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1052 | DRM_CONNECTOR_POLL_DISCONNECT)) |
||
1963 | serge | 1053 | poll = true; |
1054 | } |
||
1055 | |||
3480 | Serge | 1056 | // if (poll) |
1057 | // schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
||
1963 | serge | 1058 | } |
1059 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
||
1060 | |||
1061 | void drm_kms_helper_poll_init(struct drm_device *dev) |
||
1062 | { |
||
1063 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
||
1064 | dev->mode_config.poll_enabled = true; |
||
1065 | |||
1066 | drm_kms_helper_poll_enable(dev); |
||
1067 | } |
||
1068 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
||
1069 | |||
1070 | void drm_kms_helper_poll_fini(struct drm_device *dev) |
||
1071 | { |
||
1072 | drm_kms_helper_poll_disable(dev); |
||
1073 | } |
||
1074 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); |
||
1075 | |||
1076 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
||
1077 | { |
||
3192 | Serge | 1078 | struct drm_connector *connector; |
1079 | enum drm_connector_status old_status; |
||
1080 | bool changed = false; |
||
1081 | |||
1963 | serge | 1082 | if (!dev->mode_config.poll_enabled) |
1083 | return; |
||
1084 | |||
3192 | Serge | 1085 | mutex_lock(&dev->mode_config.mutex); |
1086 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1087 | |||
1088 | /* Only handle HPD capable connectors. */ |
||
1089 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) |
||
1090 | continue; |
||
1091 | |||
1092 | old_status = connector->status; |
||
1093 | |||
1094 | connector->status = connector->funcs->detect(connector, false); |
||
3764 | Serge | 1095 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
3192 | Serge | 1096 | connector->base.id, |
1097 | drm_get_connector_name(connector), |
||
3764 | Serge | 1098 | drm_get_connector_status_name(old_status), |
1099 | drm_get_connector_status_name(connector->status)); |
||
3192 | Serge | 1100 | if (old_status != connector->status) |
1101 | changed = true; |
||
1102 | } |
||
1103 | |||
1104 | mutex_unlock(&dev->mode_config.mutex); |
||
1105 | |||
1106 | if (changed) |
||
1107 | drm_kms_helper_hotplug_event(dev); |
||
1963 | serge | 1108 | } |
1109 | EXPORT_SYMBOL(drm_helper_hpd_irq_event);>>>>>>>=><=> |