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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 | |||
4075 | Serge | 192 | list_for_each_entry(mode, &connector->modes, head) |
193 | mode->vrefresh = drm_mode_vrefresh(mode); |
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194 | |||
1123 | serge | 195 | drm_mode_sort(&connector->modes); |
196 | |||
1963 | serge | 197 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
1179 | serge | 198 | drm_get_connector_name(connector)); |
3031 | serge | 199 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 200 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
201 | drm_mode_debug_printmodeline(mode); |
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202 | } |
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203 | |||
204 | return count; |
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205 | } |
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206 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
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207 | |||
208 | /** |
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209 | * drm_helper_encoder_in_use - check if a given encoder is in use |
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210 | * @encoder: encoder to check |
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211 | * |
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212 | * LOCKING: |
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213 | * Caller must hold mode config lock. |
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214 | * |
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215 | * Walk @encoders's DRM device's mode_config and see if it's in use. |
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216 | * |
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217 | * RETURNS: |
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218 | * True if @encoder is part of the mode_config, false otherwise. |
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219 | */ |
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220 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
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221 | { |
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222 | struct drm_connector *connector; |
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223 | struct drm_device *dev = encoder->dev; |
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224 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
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225 | if (connector->encoder == encoder) |
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226 | return true; |
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227 | return false; |
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228 | } |
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229 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
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230 | |||
231 | /** |
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232 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
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233 | * @crtc: CRTC to check |
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234 | * |
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235 | * LOCKING: |
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236 | * Caller must hold mode config lock. |
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237 | * |
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238 | * Walk @crtc's DRM device's mode_config and see if it's in use. |
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239 | * |
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240 | * RETURNS: |
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241 | * True if @crtc is part of the mode_config, false otherwise. |
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242 | */ |
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243 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
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244 | { |
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245 | struct drm_encoder *encoder; |
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246 | struct drm_device *dev = crtc->dev; |
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247 | /* FIXME: Locking around list access? */ |
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248 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
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249 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
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250 | return true; |
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251 | return false; |
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252 | } |
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253 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
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254 | |||
1963 | serge | 255 | static void |
256 | drm_encoder_disable(struct drm_encoder *encoder) |
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257 | { |
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258 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
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259 | |||
4104 | Serge | 260 | if (encoder->bridge) |
261 | encoder->bridge->funcs->disable(encoder->bridge); |
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262 | |||
1963 | serge | 263 | if (encoder_funcs->disable) |
264 | (*encoder_funcs->disable)(encoder); |
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265 | else |
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266 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
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4104 | Serge | 267 | |
268 | if (encoder->bridge) |
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269 | encoder->bridge->funcs->post_disable(encoder->bridge); |
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1963 | serge | 270 | } |
271 | |||
1123 | serge | 272 | /** |
1404 | serge | 273 | * drm_helper_disable_unused_functions - disable unused objects |
1123 | serge | 274 | * @dev: DRM device |
275 | * |
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276 | * LOCKING: |
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277 | * Caller must hold mode config lock. |
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278 | * |
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279 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
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280 | * by calling its dpms function, which should power it off. |
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281 | */ |
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282 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
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283 | { |
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284 | struct drm_encoder *encoder; |
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1179 | serge | 285 | struct drm_connector *connector; |
1123 | serge | 286 | struct drm_crtc *crtc; |
287 | |||
1179 | serge | 288 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
289 | if (!connector->encoder) |
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290 | continue; |
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291 | if (connector->status == connector_status_disconnected) |
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292 | connector->encoder = NULL; |
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293 | } |
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294 | |||
1123 | serge | 295 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
1179 | serge | 296 | if (!drm_helper_encoder_in_use(encoder)) { |
1963 | serge | 297 | drm_encoder_disable(encoder); |
1179 | serge | 298 | /* disconnector encoder from any connector */ |
299 | encoder->crtc = NULL; |
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300 | } |
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1123 | serge | 301 | } |
302 | |||
303 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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304 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
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305 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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306 | if (!crtc->enabled) { |
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1963 | serge | 307 | if (crtc_funcs->disable) |
308 | (*crtc_funcs->disable)(crtc); |
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309 | else |
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310 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
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1123 | serge | 311 | crtc->fb = NULL; |
312 | } |
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313 | } |
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314 | } |
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315 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
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316 | |||
317 | /** |
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318 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? |
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319 | * @encoder: encoder to test |
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320 | * @crtc: crtc to test |
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321 | * |
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322 | * Return false if @encoder can't be driven by @crtc, true otherwise. |
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323 | */ |
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324 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, |
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325 | struct drm_crtc *crtc) |
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326 | { |
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327 | struct drm_device *dev; |
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328 | struct drm_crtc *tmp; |
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329 | int crtc_mask = 1; |
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330 | |||
1963 | serge | 331 | WARN(!crtc, "checking null crtc?\n"); |
1123 | serge | 332 | |
333 | dev = crtc->dev; |
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334 | |||
335 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { |
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336 | if (tmp == crtc) |
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337 | break; |
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338 | crtc_mask <<= 1; |
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339 | } |
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340 | |||
341 | if (encoder->possible_crtcs & crtc_mask) |
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342 | return true; |
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343 | return false; |
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344 | } |
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345 | |||
346 | /* |
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347 | * Check the CRTC we're going to map each output to vs. its current |
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348 | * CRTC. If they don't match, we have to disable the output and the CRTC |
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349 | * since the driver will have to re-route things. |
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350 | */ |
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351 | static void |
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352 | drm_crtc_prepare_encoders(struct drm_device *dev) |
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353 | { |
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354 | struct drm_encoder_helper_funcs *encoder_funcs; |
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355 | struct drm_encoder *encoder; |
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356 | |||
357 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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358 | encoder_funcs = encoder->helper_private; |
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359 | /* Disable unused encoders */ |
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360 | if (encoder->crtc == NULL) |
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1963 | serge | 361 | drm_encoder_disable(encoder); |
1123 | serge | 362 | /* Disable encoders whose CRTC is about to change */ |
363 | if (encoder_funcs->get_crtc && |
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364 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
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1963 | serge | 365 | drm_encoder_disable(encoder); |
1123 | serge | 366 | } |
367 | } |
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368 | |||
369 | /** |
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3192 | Serge | 370 | * drm_crtc_helper_set_mode - internal helper to set a mode |
1123 | serge | 371 | * @crtc: CRTC to program |
372 | * @mode: mode to use |
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3192 | Serge | 373 | * @x: horizontal offset into the surface |
374 | * @y: vertical offset into the surface |
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375 | * @old_fb: old framebuffer, for cleanup |
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1123 | serge | 376 | * |
377 | * LOCKING: |
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378 | * Caller must hold mode config lock. |
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379 | * |
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380 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
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3192 | Serge | 381 | * to fixup or reject the mode prior to trying to set it. This is an internal |
382 | * helper that drivers could e.g. use to update properties that require the |
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383 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
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384 | * example for changing whether audio is enabled on a hdmi link or for changing |
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385 | * panel fitter or dither attributes. It is also called by the |
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386 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
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387 | * sequence. |
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1123 | serge | 388 | * |
389 | * RETURNS: |
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390 | * True if the mode was set successfully, or false otherwise. |
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391 | */ |
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392 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
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393 | struct drm_display_mode *mode, |
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394 | int x, int y, |
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395 | struct drm_framebuffer *old_fb) |
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396 | { |
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397 | struct drm_device *dev = crtc->dev; |
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1963 | serge | 398 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
1123 | serge | 399 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
400 | struct drm_encoder_helper_funcs *encoder_funcs; |
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401 | int saved_x, saved_y; |
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402 | struct drm_encoder *encoder; |
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403 | bool ret = true; |
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404 | |||
405 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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406 | if (!crtc->enabled) |
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407 | return true; |
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408 | |||
1963 | serge | 409 | adjusted_mode = drm_mode_duplicate(dev, mode); |
3031 | serge | 410 | if (!adjusted_mode) |
411 | return false; |
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1963 | serge | 412 | |
413 | saved_hwmode = crtc->hwmode; |
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1123 | serge | 414 | saved_mode = crtc->mode; |
415 | saved_x = crtc->x; |
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416 | saved_y = crtc->y; |
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417 | |||
418 | /* Update crtc values up front so the driver can rely on them for mode |
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419 | * setting. |
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420 | */ |
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421 | crtc->mode = *mode; |
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422 | crtc->x = x; |
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423 | crtc->y = y; |
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424 | |||
425 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
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426 | * adjust it according to limitations or connector properties, and also |
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427 | * a chance to reject the mode entirely. |
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428 | */ |
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429 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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430 | |||
431 | if (encoder->crtc != crtc) |
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432 | continue; |
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4104 | Serge | 433 | |
434 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { |
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435 | ret = encoder->bridge->funcs->mode_fixup( |
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436 | encoder->bridge, mode, adjusted_mode); |
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437 | if (!ret) { |
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438 | DRM_DEBUG_KMS("Bridge fixup failed\n"); |
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439 | goto done; |
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440 | } |
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441 | } |
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442 | |||
1123 | serge | 443 | encoder_funcs = encoder->helper_private; |
444 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
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445 | adjusted_mode))) { |
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3031 | serge | 446 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
1123 | serge | 447 | goto done; |
448 | } |
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449 | } |
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450 | |||
451 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
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3031 | serge | 452 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
1123 | serge | 453 | goto done; |
454 | } |
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1963 | serge | 455 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
1123 | serge | 456 | |
457 | /* Prepare the encoders and CRTCs before setting the mode. */ |
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458 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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459 | |||
460 | if (encoder->crtc != crtc) |
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461 | continue; |
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4104 | Serge | 462 | |
463 | if (encoder->bridge) |
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464 | encoder->bridge->funcs->disable(encoder->bridge); |
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465 | |||
1123 | serge | 466 | encoder_funcs = encoder->helper_private; |
467 | /* Disable the encoders as the first thing we do. */ |
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468 | encoder_funcs->prepare(encoder); |
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4104 | Serge | 469 | |
470 | if (encoder->bridge) |
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471 | encoder->bridge->funcs->post_disable(encoder->bridge); |
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1123 | serge | 472 | } |
473 | |||
474 | drm_crtc_prepare_encoders(dev); |
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475 | |||
476 | crtc_funcs->prepare(crtc); |
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477 | |||
478 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
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479 | * on the DPLL. |
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480 | */ |
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481 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
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482 | if (!ret) |
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483 | goto done; |
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484 | |||
485 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
486 | |||
487 | if (encoder->crtc != crtc) |
||
488 | continue; |
||
489 | |||
1963 | serge | 490 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
491 | encoder->base.id, drm_get_encoder_name(encoder), |
||
492 | mode->base.id, mode->name); |
||
1123 | serge | 493 | encoder_funcs = encoder->helper_private; |
494 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
||
4104 | Serge | 495 | |
496 | if (encoder->bridge && encoder->bridge->funcs->mode_set) |
||
497 | encoder->bridge->funcs->mode_set(encoder->bridge, mode, |
||
498 | adjusted_mode); |
||
1123 | serge | 499 | } |
500 | |||
501 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
||
502 | crtc_funcs->commit(crtc); |
||
503 | |||
504 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
505 | |||
506 | if (encoder->crtc != crtc) |
||
507 | continue; |
||
508 | |||
4104 | Serge | 509 | if (encoder->bridge) |
510 | encoder->bridge->funcs->pre_enable(encoder->bridge); |
||
511 | |||
1123 | serge | 512 | encoder_funcs = encoder->helper_private; |
513 | encoder_funcs->commit(encoder); |
||
514 | |||
4104 | Serge | 515 | if (encoder->bridge) |
516 | encoder->bridge->funcs->enable(encoder->bridge); |
||
1123 | serge | 517 | } |
518 | |||
1963 | serge | 519 | /* Store real post-adjustment hardware mode. */ |
520 | crtc->hwmode = *adjusted_mode; |
||
521 | |||
522 | /* Calculate and store various constants which |
||
523 | * are later needed by vblank and swap-completion |
||
524 | * timestamping. They are derived from true hwmode. |
||
525 | */ |
||
526 | drm_calc_timestamping_constants(crtc); |
||
527 | |||
1123 | serge | 528 | /* FIXME: add subpixel order */ |
529 | done: |
||
1963 | serge | 530 | drm_mode_destroy(dev, adjusted_mode); |
1123 | serge | 531 | if (!ret) { |
1963 | serge | 532 | crtc->hwmode = saved_hwmode; |
1123 | serge | 533 | crtc->mode = saved_mode; |
534 | crtc->x = saved_x; |
||
535 | crtc->y = saved_y; |
||
536 | } |
||
1179 | serge | 537 | |
1123 | serge | 538 | return ret; |
539 | } |
||
540 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
||
541 | |||
542 | |||
3031 | serge | 543 | static int |
544 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
||
545 | { |
||
546 | struct drm_device *dev = crtc->dev; |
||
547 | struct drm_connector *connector; |
||
548 | struct drm_encoder *encoder; |
||
549 | |||
550 | /* Decouple all encoders and their attached connectors from this crtc */ |
||
551 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
552 | if (encoder->crtc != crtc) |
||
553 | continue; |
||
554 | |||
555 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
556 | if (connector->encoder != encoder) |
||
557 | continue; |
||
558 | |||
559 | connector->encoder = NULL; |
||
560 | } |
||
561 | } |
||
562 | |||
563 | drm_helper_disable_unused_functions(dev); |
||
564 | return 0; |
||
565 | } |
||
566 | |||
1123 | serge | 567 | /** |
568 | * drm_crtc_helper_set_config - set a new config from userspace |
||
3192 | Serge | 569 | * @set: mode set configuration |
1123 | serge | 570 | * |
571 | * LOCKING: |
||
572 | * Caller must hold mode config lock. |
||
573 | * |
||
3192 | Serge | 574 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
575 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and |
||
576 | * enable it. This is the main helper functions for drivers that implement |
||
577 | * kernel mode setting with the crtc helper functions and the assorted |
||
578 | * ->prepare(), ->modeset() and ->commit() helper callbacks. |
||
1123 | serge | 579 | * |
580 | * RETURNS: |
||
3192 | Serge | 581 | * Returns 0 on success, -ERRNO on failure. |
1123 | serge | 582 | */ |
583 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
||
584 | { |
||
585 | struct drm_device *dev; |
||
1179 | serge | 586 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
587 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
||
1123 | serge | 588 | struct drm_framebuffer *old_fb = NULL; |
1179 | serge | 589 | bool mode_changed = false; /* if true do a full mode set */ |
590 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
||
591 | struct drm_connector *save_connectors, *connector; |
||
1123 | serge | 592 | int count = 0, ro, fail = 0; |
593 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
3031 | serge | 594 | struct drm_mode_set save_set; |
595 | int ret; |
||
1963 | serge | 596 | int i; |
1123 | serge | 597 | |
1179 | serge | 598 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 599 | |
4075 | Serge | 600 | BUG_ON(!set); |
601 | BUG_ON(!set->crtc); |
||
602 | BUG_ON(!set->crtc->helper_private); |
||
1123 | serge | 603 | |
4075 | Serge | 604 | /* Enforce sane interface api - has been abused by the fb helper. */ |
605 | BUG_ON(!set->mode && set->fb); |
||
606 | BUG_ON(set->fb && set->num_connectors == 0); |
||
1123 | serge | 607 | |
608 | crtc_funcs = set->crtc->helper_private; |
||
609 | |||
1963 | serge | 610 | if (!set->mode) |
611 | set->fb = NULL; |
||
612 | |||
613 | if (set->fb) { |
||
614 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
||
615 | set->crtc->base.id, set->fb->base.id, |
||
1123 | serge | 616 | (int)set->num_connectors, set->x, set->y); |
1963 | serge | 617 | } else { |
618 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
||
3031 | serge | 619 | return drm_crtc_helper_disable(set->crtc); |
1963 | serge | 620 | } |
1123 | serge | 621 | |
622 | dev = set->crtc->dev; |
||
623 | |||
1179 | serge | 624 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
625 | * connector data. */ |
||
626 | save_crtcs = kzalloc(dev->mode_config.num_crtc * |
||
627 | sizeof(struct drm_crtc), GFP_KERNEL); |
||
1123 | serge | 628 | if (!save_crtcs) |
629 | return -ENOMEM; |
||
630 | |||
1179 | serge | 631 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
632 | sizeof(struct drm_encoder), GFP_KERNEL); |
||
1123 | serge | 633 | if (!save_encoders) { |
634 | kfree(save_crtcs); |
||
635 | return -ENOMEM; |
||
636 | } |
||
637 | |||
1179 | serge | 638 | save_connectors = kzalloc(dev->mode_config.num_connector * |
639 | sizeof(struct drm_connector), GFP_KERNEL); |
||
640 | if (!save_connectors) { |
||
641 | kfree(save_crtcs); |
||
642 | kfree(save_encoders); |
||
643 | return -ENOMEM; |
||
644 | } |
||
645 | |||
646 | /* Copy data. Note that driver private data is not affected. |
||
647 | * Should anything bad happen only the expected state is |
||
648 | * restored, not the drivers personal bookkeeping. |
||
649 | */ |
||
650 | count = 0; |
||
651 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
652 | save_crtcs[count++] = *crtc; |
||
653 | } |
||
654 | |||
655 | count = 0; |
||
656 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
657 | save_encoders[count++] = *encoder; |
||
658 | } |
||
659 | |||
660 | count = 0; |
||
661 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
662 | save_connectors[count++] = *connector; |
||
663 | } |
||
664 | |||
3031 | serge | 665 | save_set.crtc = set->crtc; |
666 | save_set.mode = &set->crtc->mode; |
||
667 | save_set.x = set->crtc->x; |
||
668 | save_set.y = set->crtc->y; |
||
669 | save_set.fb = set->crtc->fb; |
||
670 | |||
1123 | serge | 671 | /* We should be able to check here if the fb has the same properties |
672 | * and then just flip_or_move it */ |
||
673 | if (set->crtc->fb != set->fb) { |
||
674 | /* If we have no fb then treat it as a full mode set */ |
||
675 | if (set->crtc->fb == NULL) { |
||
1179 | serge | 676 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
1123 | serge | 677 | mode_changed = true; |
1179 | serge | 678 | } else if (set->fb == NULL) { |
679 | mode_changed = true; |
||
3746 | Serge | 680 | } else if (set->fb->pixel_format != |
681 | set->crtc->fb->pixel_format) { |
||
682 | mode_changed = true; |
||
1430 | serge | 683 | } else |
1123 | serge | 684 | fb_changed = true; |
685 | } |
||
686 | |||
687 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
||
688 | fb_changed = true; |
||
689 | |||
690 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
||
1179 | serge | 691 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
1123 | serge | 692 | drm_mode_debug_printmodeline(&set->crtc->mode); |
693 | drm_mode_debug_printmodeline(set->mode); |
||
694 | mode_changed = true; |
||
695 | } |
||
696 | |||
697 | /* a) traverse passed in connector list and get encoders for them */ |
||
698 | count = 0; |
||
699 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
700 | struct drm_connector_helper_funcs *connector_funcs = |
||
701 | connector->helper_private; |
||
702 | new_encoder = connector->encoder; |
||
703 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
704 | if (set->connectors[ro] == connector) { |
||
705 | new_encoder = connector_funcs->best_encoder(connector); |
||
706 | /* if we can't get an encoder for a connector |
||
707 | we are setting now - then fail */ |
||
708 | if (new_encoder == NULL) |
||
709 | /* don't break so fail path works correct */ |
||
710 | fail = 1; |
||
711 | break; |
||
4075 | Serge | 712 | |
713 | if (connector->dpms != DRM_MODE_DPMS_ON) { |
||
714 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); |
||
715 | mode_changed = true; |
||
716 | } |
||
1123 | serge | 717 | } |
718 | } |
||
719 | |||
720 | if (new_encoder != connector->encoder) { |
||
1179 | serge | 721 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
1123 | serge | 722 | mode_changed = true; |
1179 | serge | 723 | /* If the encoder is reused for another connector, then |
724 | * the appropriate crtc will be set later. |
||
725 | */ |
||
726 | if (connector->encoder) |
||
727 | connector->encoder->crtc = NULL; |
||
1123 | serge | 728 | connector->encoder = new_encoder; |
729 | } |
||
730 | } |
||
731 | |||
732 | if (fail) { |
||
733 | ret = -EINVAL; |
||
1179 | serge | 734 | goto fail; |
1123 | serge | 735 | } |
736 | |||
737 | count = 0; |
||
738 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
739 | if (!connector->encoder) |
||
740 | continue; |
||
741 | |||
742 | if (connector->encoder->crtc == set->crtc) |
||
743 | new_crtc = NULL; |
||
744 | else |
||
745 | new_crtc = connector->encoder->crtc; |
||
746 | |||
747 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
748 | if (set->connectors[ro] == connector) |
||
749 | new_crtc = set->crtc; |
||
750 | } |
||
751 | |||
752 | /* Make sure the new CRTC will work with the encoder */ |
||
753 | if (new_crtc && |
||
754 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
||
755 | ret = -EINVAL; |
||
1179 | serge | 756 | goto fail; |
1123 | serge | 757 | } |
758 | if (new_crtc != connector->encoder->crtc) { |
||
1179 | serge | 759 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
1123 | serge | 760 | mode_changed = true; |
761 | connector->encoder->crtc = new_crtc; |
||
762 | } |
||
1963 | serge | 763 | if (new_crtc) { |
764 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
||
765 | connector->base.id, drm_get_connector_name(connector), |
||
766 | new_crtc->base.id); |
||
767 | } else { |
||
768 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
||
769 | connector->base.id, drm_get_connector_name(connector)); |
||
770 | } |
||
1123 | serge | 771 | } |
772 | |||
773 | /* mode_set_base is not a required function */ |
||
774 | if (fb_changed && !crtc_funcs->mode_set_base) |
||
775 | mode_changed = true; |
||
776 | |||
777 | if (mode_changed) { |
||
1963 | serge | 778 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
779 | if (set->crtc->enabled) { |
||
1179 | serge | 780 | DRM_DEBUG_KMS("attempting to set mode from" |
781 | " userspace\n"); |
||
1123 | serge | 782 | drm_mode_debug_printmodeline(set->mode); |
1963 | serge | 783 | old_fb = set->crtc->fb; |
784 | set->crtc->fb = set->fb; |
||
1123 | serge | 785 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
786 | set->x, set->y, |
||
787 | old_fb)) { |
||
1963 | serge | 788 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
789 | set->crtc->base.id); |
||
790 | set->crtc->fb = old_fb; |
||
1123 | serge | 791 | ret = -EINVAL; |
1179 | serge | 792 | goto fail; |
1123 | serge | 793 | } |
1963 | serge | 794 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
795 | for (i = 0; i < set->num_connectors; i++) { |
||
796 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, |
||
797 | drm_get_connector_name(set->connectors[i])); |
||
3031 | serge | 798 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
1963 | serge | 799 | } |
1123 | serge | 800 | } |
801 | drm_helper_disable_unused_functions(dev); |
||
802 | } else if (fb_changed) { |
||
1179 | serge | 803 | set->crtc->x = set->x; |
804 | set->crtc->y = set->y; |
||
805 | |||
1123 | serge | 806 | old_fb = set->crtc->fb; |
807 | if (set->crtc->fb != set->fb) |
||
808 | set->crtc->fb = set->fb; |
||
809 | ret = crtc_funcs->mode_set_base(set->crtc, |
||
810 | set->x, set->y, old_fb); |
||
1963 | serge | 811 | if (ret != 0) { |
812 | set->crtc->fb = old_fb; |
||
1179 | serge | 813 | goto fail; |
1123 | serge | 814 | } |
1963 | serge | 815 | } |
1123 | serge | 816 | |
1179 | serge | 817 | kfree(save_connectors); |
1123 | serge | 818 | kfree(save_encoders); |
819 | kfree(save_crtcs); |
||
820 | return 0; |
||
821 | |||
1179 | serge | 822 | fail: |
823 | /* Restore all previous data. */ |
||
1123 | serge | 824 | count = 0; |
1179 | serge | 825 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
826 | *crtc = save_crtcs[count++]; |
||
827 | } |
||
1123 | serge | 828 | |
1179 | serge | 829 | count = 0; |
830 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
831 | *encoder = save_encoders[count++]; |
||
1123 | serge | 832 | } |
1179 | serge | 833 | |
1123 | serge | 834 | count = 0; |
835 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1179 | serge | 836 | *connector = save_connectors[count++]; |
1123 | serge | 837 | } |
1179 | serge | 838 | |
3031 | serge | 839 | /* Try to restore the config */ |
840 | if (mode_changed && |
||
841 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
||
842 | save_set.y, save_set.fb)) |
||
843 | DRM_ERROR("failed to restore config after modeset failure\n"); |
||
844 | |||
1179 | serge | 845 | kfree(save_connectors); |
1123 | serge | 846 | kfree(save_encoders); |
1179 | serge | 847 | kfree(save_crtcs); |
1123 | serge | 848 | return ret; |
849 | } |
||
850 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
||
851 | |||
852 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
||
853 | { |
||
854 | int dpms = DRM_MODE_DPMS_OFF; |
||
855 | struct drm_connector *connector; |
||
856 | struct drm_device *dev = encoder->dev; |
||
857 | |||
858 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
859 | if (connector->encoder == encoder) |
||
860 | if (connector->dpms < dpms) |
||
861 | dpms = connector->dpms; |
||
862 | return dpms; |
||
863 | } |
||
864 | |||
4104 | Serge | 865 | /* Helper which handles bridge ordering around encoder dpms */ |
866 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) |
||
867 | { |
||
868 | struct drm_bridge *bridge = encoder->bridge; |
||
869 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
870 | |||
871 | if (bridge) { |
||
872 | if (mode == DRM_MODE_DPMS_ON) |
||
873 | bridge->funcs->pre_enable(bridge); |
||
874 | else |
||
875 | bridge->funcs->disable(bridge); |
||
876 | } |
||
877 | |||
878 | encoder_funcs = encoder->helper_private; |
||
879 | if (encoder_funcs->dpms) |
||
880 | encoder_funcs->dpms(encoder, mode); |
||
881 | |||
882 | if (bridge) { |
||
883 | if (mode == DRM_MODE_DPMS_ON) |
||
884 | bridge->funcs->enable(bridge); |
||
885 | else |
||
886 | bridge->funcs->post_disable(bridge); |
||
887 | } |
||
888 | } |
||
889 | |||
1123 | serge | 890 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
891 | { |
||
892 | int dpms = DRM_MODE_DPMS_OFF; |
||
893 | struct drm_connector *connector; |
||
894 | struct drm_device *dev = crtc->dev; |
||
895 | |||
896 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
897 | if (connector->encoder && connector->encoder->crtc == crtc) |
||
898 | if (connector->dpms < dpms) |
||
899 | dpms = connector->dpms; |
||
900 | return dpms; |
||
901 | } |
||
902 | |||
903 | /** |
||
3192 | Serge | 904 | * drm_helper_connector_dpms() - connector dpms helper implementation |
905 | * @connector: affected connector |
||
906 | * @mode: DPMS mode |
||
1123 | serge | 907 | * |
3192 | Serge | 908 | * This is the main helper function provided by the crtc helper framework for |
909 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
||
910 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() |
||
911 | * callback provided by the driver appropriately. |
||
1123 | serge | 912 | */ |
913 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
||
914 | { |
||
915 | struct drm_encoder *encoder = connector->encoder; |
||
916 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
||
4104 | Serge | 917 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
1123 | serge | 918 | |
919 | if (mode == connector->dpms) |
||
920 | return; |
||
921 | |||
922 | old_dpms = connector->dpms; |
||
923 | connector->dpms = mode; |
||
924 | |||
4104 | Serge | 925 | if (encoder) |
926 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); |
||
927 | |||
1123 | serge | 928 | /* from off to on, do crtc then encoder */ |
929 | if (mode < old_dpms) { |
||
930 | if (crtc) { |
||
931 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
932 | if (crtc_funcs->dpms) |
||
933 | (*crtc_funcs->dpms) (crtc, |
||
934 | drm_helper_choose_crtc_dpms(crtc)); |
||
935 | } |
||
4104 | Serge | 936 | if (encoder) |
937 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
||
1123 | serge | 938 | } |
939 | |||
940 | /* from on to off, do encoder then crtc */ |
||
941 | if (mode > old_dpms) { |
||
4104 | Serge | 942 | if (encoder) |
943 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
||
1123 | serge | 944 | if (crtc) { |
945 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
946 | if (crtc_funcs->dpms) |
||
947 | (*crtc_funcs->dpms) (crtc, |
||
948 | drm_helper_choose_crtc_dpms(crtc)); |
||
949 | } |
||
950 | } |
||
951 | |||
952 | return; |
||
953 | } |
||
954 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
||
955 | |||
956 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
||
3031 | serge | 957 | struct drm_mode_fb_cmd2 *mode_cmd) |
1123 | serge | 958 | { |
3031 | serge | 959 | int i; |
960 | |||
1123 | serge | 961 | fb->width = mode_cmd->width; |
962 | fb->height = mode_cmd->height; |
||
3031 | serge | 963 | for (i = 0; i < 4; i++) { |
964 | fb->pitches[i] = mode_cmd->pitches[i]; |
||
965 | fb->offsets[i] = mode_cmd->offsets[i]; |
||
966 | } |
||
967 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
||
968 | &fb->bits_per_pixel); |
||
969 | fb->pixel_format = mode_cmd->pixel_format; |
||
1123 | serge | 970 | |
971 | return 0; |
||
972 | } |
||
973 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
||
974 | |||
975 | int drm_helper_resume_force_mode(struct drm_device *dev) |
||
976 | { |
||
977 | struct drm_crtc *crtc; |
||
1404 | serge | 978 | struct drm_encoder *encoder; |
979 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
4104 | Serge | 980 | int ret, encoder_dpms; |
1123 | serge | 981 | |
982 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
983 | |||
1179 | serge | 984 | if (!crtc->enabled) |
985 | continue; |
||
1123 | serge | 986 | |
1179 | serge | 987 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1123 | serge | 988 | crtc->x, crtc->y, crtc->fb); |
989 | |||
990 | if (ret == false) |
||
991 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
||
1404 | serge | 992 | |
993 | /* Turn off outputs that were already powered off */ |
||
994 | if (drm_helper_choose_crtc_dpms(crtc)) { |
||
995 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
996 | |||
997 | if(encoder->crtc != crtc) |
||
998 | continue; |
||
999 | |||
4104 | Serge | 1000 | encoder_dpms = drm_helper_choose_encoder_dpms( |
1001 | encoder); |
||
1002 | |||
1003 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
||
1963 | serge | 1004 | } |
1404 | serge | 1005 | |
1006 | crtc_funcs = crtc->helper_private; |
||
1007 | if (crtc_funcs->dpms) |
||
1008 | (*crtc_funcs->dpms) (crtc, |
||
1009 | drm_helper_choose_crtc_dpms(crtc)); |
||
1010 | } |
||
1011 | } |
||
1179 | serge | 1012 | /* disable the unused connectors while restoring the modesetting */ |
1013 | drm_helper_disable_unused_functions(dev); |
||
1123 | serge | 1014 | return 0; |
1015 | } |
||
1016 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
||
1963 | serge | 1017 | |
3480 | Serge | 1018 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
1019 | { |
||
1020 | /* send a uevent + call fbdev */ |
||
1021 | if (dev->mode_config.funcs->output_poll_changed) |
||
1022 | dev->mode_config.funcs->output_poll_changed(dev); |
||
1023 | } |
||
1024 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); |
||
1963 | serge | 1025 | |
1026 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
||
1027 | static void output_poll_execute(struct work_struct *work) |
||
1028 | { |
||
1029 | struct delayed_work *delayed_work = to_delayed_work(work); |
||
1030 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); |
||
1031 | struct drm_connector *connector; |
||
1032 | enum drm_connector_status old_status; |
||
1033 | bool repoll = false, changed = false; |
||
1034 | |||
1035 | if (!drm_kms_helper_poll) |
||
1036 | return; |
||
1037 | |||
1038 | mutex_lock(&dev->mode_config.mutex); |
||
1039 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1040 | |||
3192 | Serge | 1041 | /* Ignore forced connectors. */ |
1042 | if (connector->force) |
||
1963 | serge | 1043 | continue; |
1044 | |||
3192 | Serge | 1045 | /* Ignore HPD capable connectors and connectors where we don't |
1046 | * want any hotplug detection at all for polling. */ |
||
1047 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) |
||
1048 | continue; |
||
1049 | |||
1963 | serge | 1050 | repoll = true; |
1051 | |||
1052 | old_status = connector->status; |
||
1053 | /* if we are connected and don't want to poll for disconnect |
||
1054 | skip it */ |
||
1055 | if (old_status == connector_status_connected && |
||
3192 | Serge | 1056 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
1963 | serge | 1057 | continue; |
1058 | |||
1059 | connector->status = connector->funcs->detect(connector, false); |
||
3764 | Serge | 1060 | if (old_status != connector->status) { |
1061 | const char *old, *new; |
||
1062 | |||
1063 | old = drm_get_connector_status_name(old_status); |
||
1064 | new = drm_get_connector_status_name(connector->status); |
||
1065 | |||
1066 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " |
||
1067 | "status updated from %s to %s\n", |
||
1963 | serge | 1068 | connector->base.id, |
1069 | drm_get_connector_name(connector), |
||
3764 | Serge | 1070 | old, new); |
1071 | |||
1963 | serge | 1072 | changed = true; |
1073 | } |
||
3764 | Serge | 1074 | } |
1963 | serge | 1075 | |
1076 | mutex_unlock(&dev->mode_config.mutex); |
||
1077 | |||
3192 | Serge | 1078 | if (changed) |
1079 | drm_kms_helper_hotplug_event(dev); |
||
1963 | serge | 1080 | |
4126 | Serge | 1081 | if (repoll) |
1082 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
||
1963 | serge | 1083 | } |
1084 | |||
1085 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
||
1086 | { |
||
1087 | if (!dev->mode_config.poll_enabled) |
||
1088 | return; |
||
3480 | Serge | 1089 | // cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
1963 | serge | 1090 | } |
1091 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); |
||
1092 | |||
1093 | void drm_kms_helper_poll_enable(struct drm_device *dev) |
||
1094 | { |
||
1095 | bool poll = false; |
||
1096 | struct drm_connector *connector; |
||
1097 | |||
1098 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
||
1099 | return; |
||
1100 | |||
1101 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
3192 | Serge | 1102 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1103 | DRM_CONNECTOR_POLL_DISCONNECT)) |
||
1963 | serge | 1104 | poll = true; |
1105 | } |
||
1106 | |||
4126 | Serge | 1107 | if (poll) |
1108 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
||
1963 | serge | 1109 | } |
1110 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
||
1111 | |||
1112 | void drm_kms_helper_poll_init(struct drm_device *dev) |
||
1113 | { |
||
1114 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
||
1115 | dev->mode_config.poll_enabled = true; |
||
1116 | |||
1117 | drm_kms_helper_poll_enable(dev); |
||
1118 | } |
||
1119 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
||
1120 | |||
1121 | void drm_kms_helper_poll_fini(struct drm_device *dev) |
||
1122 | { |
||
1123 | drm_kms_helper_poll_disable(dev); |
||
1124 | } |
||
1125 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); |
||
1126 | |||
1127 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
||
1128 | { |
||
3192 | Serge | 1129 | struct drm_connector *connector; |
1130 | enum drm_connector_status old_status; |
||
1131 | bool changed = false; |
||
1132 | |||
1963 | serge | 1133 | if (!dev->mode_config.poll_enabled) |
1134 | return; |
||
1135 | |||
3192 | Serge | 1136 | mutex_lock(&dev->mode_config.mutex); |
1137 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1138 | |||
1139 | /* Only handle HPD capable connectors. */ |
||
1140 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) |
||
1141 | continue; |
||
1142 | |||
1143 | old_status = connector->status; |
||
1144 | |||
1145 | connector->status = connector->funcs->detect(connector, false); |
||
3764 | Serge | 1146 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
3192 | Serge | 1147 | connector->base.id, |
1148 | drm_get_connector_name(connector), |
||
3764 | Serge | 1149 | drm_get_connector_status_name(old_status), |
1150 | drm_get_connector_status_name(connector->status)); |
||
3192 | Serge | 1151 | if (old_status != connector->status) |
1152 | changed = true; |
||
1153 | } |
||
1154 | |||
1155 | mutex_unlock(&dev->mode_config.mutex); |
||
1156 | |||
1157 | if (changed) |
||
1158 | drm_kms_helper_hotplug_event(dev); |
||
1963 | serge | 1159 | } |
1160 | EXPORT_SYMBOL(drm_helper_hpd_irq_event);>>>>>>>=><=> |