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Rev | Author | Line No. | Line |
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1123 | serge | 1 | /* |
2 | * Copyright (c) 2006-2008 Intel Corporation |
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3 | * Copyright (c) 2007 Dave Airlie |
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4 | * |
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5 | * DRM core CRTC related functions |
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6 | * |
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7 | * Permission to use, copy, modify, distribute, and sell this software and its |
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8 | * documentation for any purpose is hereby granted without fee, provided that |
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9 | * the above copyright notice appear in all copies and that both that copyright |
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10 | * notice and this permission notice appear in supporting documentation, and |
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11 | * that the name of the copyright holders not be used in advertising or |
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12 | * publicity pertaining to distribution of the software without specific, |
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13 | * written prior permission. The copyright holders make no representations |
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14 | * about the suitability of this software for any purpose. It is provided "as |
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15 | * is" without express or implied warranty. |
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16 | * |
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17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
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18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
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19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
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20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
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21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
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22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
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23 | * OF THIS SOFTWARE. |
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24 | * |
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25 | * Authors: |
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26 | * Keith Packard |
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27 | * Eric Anholt |
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28 | * Dave Airlie |
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29 | * Jesse Barnes |
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30 | */ |
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31 | |||
3031 | serge | 32 | #include |
33 | #include |
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1123 | serge | 34 | |
3031 | serge | 35 | #include |
36 | #include |
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37 | #include |
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38 | #include |
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39 | #include |
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40 | #include |
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41 | |||
3192 | Serge | 42 | /** |
43 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the |
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44 | * connector list |
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45 | * @dev: drm device to operate on |
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46 | * |
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47 | * Some userspace presumes that the first connected connector is the main |
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48 | * display, where it's supposed to display e.g. the login screen. For |
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49 | * laptops, this should be the main panel. Use this function to sort all |
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50 | * (eDP/LVDS) panels to the front of the connector list, instead of |
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51 | * painstakingly trying to initialize them in the right order. |
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52 | */ |
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53 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
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54 | { |
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55 | struct drm_connector *connector, *tmp; |
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56 | struct list_head panel_list; |
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57 | |||
58 | INIT_LIST_HEAD(&panel_list); |
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59 | |||
60 | list_for_each_entry_safe(connector, tmp, |
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61 | &dev->mode_config.connector_list, head) { |
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62 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || |
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63 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
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64 | list_move_tail(&connector->head, &panel_list); |
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65 | } |
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66 | |||
67 | list_splice(&panel_list, &dev->mode_config.connector_list); |
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68 | } |
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69 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); |
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70 | |||
1963 | serge | 71 | static bool drm_kms_helper_poll = true; |
72 | |||
1123 | serge | 73 | static void drm_mode_validate_flag(struct drm_connector *connector, |
74 | int flags) |
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75 | { |
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3031 | serge | 76 | struct drm_display_mode *mode; |
1123 | serge | 77 | |
78 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE)) |
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79 | return; |
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80 | |||
3031 | serge | 81 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 82 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
83 | !(flags & DRM_MODE_FLAG_INTERLACE)) |
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84 | mode->status = MODE_NO_INTERLACE; |
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85 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && |
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86 | !(flags & DRM_MODE_FLAG_DBLSCAN)) |
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87 | mode->status = MODE_NO_DBLESCAN; |
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88 | } |
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89 | |||
90 | return; |
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91 | } |
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92 | |||
93 | /** |
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1963 | serge | 94 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
3192 | Serge | 95 | * @connector: connector to probe |
1123 | serge | 96 | * @maxX: max width for modes |
97 | * @maxY: max height for modes |
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98 | * |
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99 | * LOCKING: |
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100 | * Caller must hold mode config lock. |
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101 | * |
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3192 | Serge | 102 | * Based on the helper callbacks implemented by @connector try to detect all |
103 | * valid modes. Modes will first be added to the connector's probed_modes list, |
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104 | * then culled (based on validity and the @maxX, @maxY parameters) and put into |
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105 | * the normal modes list. |
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1123 | serge | 106 | * |
3192 | Serge | 107 | * Intended to be use as a generic implementation of the ->probe() @connector |
108 | * callback for drivers that use the crtc helpers for output mode filtering and |
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109 | * detection. |
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1123 | serge | 110 | * |
111 | * RETURNS: |
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112 | * Number of modes found on @connector. |
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113 | */ |
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114 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
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115 | uint32_t maxX, uint32_t maxY) |
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116 | { |
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117 | struct drm_device *dev = connector->dev; |
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3031 | serge | 118 | struct drm_display_mode *mode; |
1123 | serge | 119 | struct drm_connector_helper_funcs *connector_funcs = |
120 | connector->helper_private; |
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121 | int count = 0; |
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122 | int mode_flags = 0; |
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123 | |||
1963 | serge | 124 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
125 | drm_get_connector_name(connector)); |
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1123 | serge | 126 | /* set all modes to the unverified state */ |
3031 | serge | 127 | list_for_each_entry(mode, &connector->modes, head) |
1123 | serge | 128 | mode->status = MODE_UNVERIFIED; |
129 | |||
1221 | serge | 130 | if (connector->force) { |
131 | if (connector->force == DRM_FORCE_ON) |
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132 | connector->status = connector_status_connected; |
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133 | else |
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134 | connector->status = connector_status_disconnected; |
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135 | if (connector->funcs->force) |
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136 | connector->funcs->force(connector); |
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1963 | serge | 137 | } else { |
3243 | Serge | 138 | // dbgprintf("call detect funcs %p ", connector->funcs); |
139 | // dbgprintf("detect %p\n", connector->funcs->detect); |
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1963 | serge | 140 | connector->status = connector->funcs->detect(connector, true); |
3243 | Serge | 141 | // dbgprintf("status %x\n", connector->status); |
1963 | serge | 142 | } |
1123 | serge | 143 | |
144 | if (connector->status == connector_status_disconnected) { |
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1963 | serge | 145 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
146 | connector->base.id, drm_get_connector_name(connector)); |
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147 | drm_mode_connector_update_edid_property(connector, NULL); |
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1179 | serge | 148 | goto prune; |
1123 | serge | 149 | } |
150 | |||
3031 | serge | 151 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
152 | count = drm_load_edid_firmware(connector); |
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153 | if (count == 0) |
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154 | #endif |
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1123 | serge | 155 | count = (*connector_funcs->get_modes)(connector); |
3031 | serge | 156 | |
1963 | serge | 157 | if (count == 0 && connector->status == connector_status_connected) |
1321 | serge | 158 | count = drm_add_modes_noedid(connector, 1024, 768); |
1963 | serge | 159 | if (count == 0) |
160 | goto prune; |
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1123 | serge | 161 | |
162 | drm_mode_connector_list_update(connector); |
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163 | |||
164 | if (maxX && maxY) |
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165 | drm_mode_validate_size(dev, &connector->modes, maxX, |
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166 | maxY, 0); |
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167 | |||
168 | if (connector->interlace_allowed) |
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169 | mode_flags |= DRM_MODE_FLAG_INTERLACE; |
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170 | if (connector->doublescan_allowed) |
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171 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; |
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172 | drm_mode_validate_flag(connector, mode_flags); |
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173 | |||
3031 | serge | 174 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 175 | if (mode->status == MODE_OK) |
176 | mode->status = connector_funcs->mode_valid(connector, |
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177 | mode); |
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178 | } |
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179 | |||
1179 | serge | 180 | prune: |
1123 | serge | 181 | drm_mode_prune_invalid(dev, &connector->modes, true); |
182 | |||
183 | if (list_empty(&connector->modes)) |
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184 | return 0; |
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185 | |||
186 | drm_mode_sort(&connector->modes); |
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187 | |||
1963 | serge | 188 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
1179 | serge | 189 | drm_get_connector_name(connector)); |
3031 | serge | 190 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 191 | mode->vrefresh = drm_mode_vrefresh(mode); |
192 | |||
193 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
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194 | drm_mode_debug_printmodeline(mode); |
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195 | } |
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196 | |||
197 | return count; |
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198 | } |
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199 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
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200 | |||
201 | /** |
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202 | * drm_helper_encoder_in_use - check if a given encoder is in use |
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203 | * @encoder: encoder to check |
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204 | * |
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205 | * LOCKING: |
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206 | * Caller must hold mode config lock. |
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207 | * |
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208 | * Walk @encoders's DRM device's mode_config and see if it's in use. |
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209 | * |
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210 | * RETURNS: |
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211 | * True if @encoder is part of the mode_config, false otherwise. |
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212 | */ |
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213 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
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214 | { |
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215 | struct drm_connector *connector; |
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216 | struct drm_device *dev = encoder->dev; |
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217 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
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218 | if (connector->encoder == encoder) |
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219 | return true; |
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220 | return false; |
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221 | } |
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222 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
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223 | |||
224 | /** |
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225 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
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226 | * @crtc: CRTC to check |
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227 | * |
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228 | * LOCKING: |
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229 | * Caller must hold mode config lock. |
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230 | * |
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231 | * Walk @crtc's DRM device's mode_config and see if it's in use. |
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232 | * |
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233 | * RETURNS: |
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234 | * True if @crtc is part of the mode_config, false otherwise. |
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235 | */ |
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236 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
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237 | { |
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238 | struct drm_encoder *encoder; |
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239 | struct drm_device *dev = crtc->dev; |
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240 | /* FIXME: Locking around list access? */ |
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241 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
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242 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
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243 | return true; |
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244 | return false; |
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245 | } |
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246 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
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247 | |||
1963 | serge | 248 | static void |
249 | drm_encoder_disable(struct drm_encoder *encoder) |
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250 | { |
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251 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
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252 | |||
253 | if (encoder_funcs->disable) |
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254 | (*encoder_funcs->disable)(encoder); |
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255 | else |
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256 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
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257 | } |
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258 | |||
1123 | serge | 259 | /** |
1404 | serge | 260 | * drm_helper_disable_unused_functions - disable unused objects |
1123 | serge | 261 | * @dev: DRM device |
262 | * |
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263 | * LOCKING: |
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264 | * Caller must hold mode config lock. |
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265 | * |
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266 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
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267 | * by calling its dpms function, which should power it off. |
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268 | */ |
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269 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
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270 | { |
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271 | struct drm_encoder *encoder; |
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1179 | serge | 272 | struct drm_connector *connector; |
1123 | serge | 273 | struct drm_crtc *crtc; |
274 | |||
1179 | serge | 275 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
276 | if (!connector->encoder) |
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277 | continue; |
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278 | if (connector->status == connector_status_disconnected) |
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279 | connector->encoder = NULL; |
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280 | } |
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281 | |||
1123 | serge | 282 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
1179 | serge | 283 | if (!drm_helper_encoder_in_use(encoder)) { |
1963 | serge | 284 | drm_encoder_disable(encoder); |
1179 | serge | 285 | /* disconnector encoder from any connector */ |
286 | encoder->crtc = NULL; |
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287 | } |
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1123 | serge | 288 | } |
289 | |||
290 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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291 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
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292 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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293 | if (!crtc->enabled) { |
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1963 | serge | 294 | if (crtc_funcs->disable) |
295 | (*crtc_funcs->disable)(crtc); |
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296 | else |
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297 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
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1123 | serge | 298 | crtc->fb = NULL; |
299 | } |
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300 | } |
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301 | } |
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302 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
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303 | |||
304 | /** |
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305 | * drm_encoder_crtc_ok - can a given crtc drive a given encoder? |
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306 | * @encoder: encoder to test |
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307 | * @crtc: crtc to test |
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308 | * |
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309 | * Return false if @encoder can't be driven by @crtc, true otherwise. |
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310 | */ |
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311 | static bool drm_encoder_crtc_ok(struct drm_encoder *encoder, |
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312 | struct drm_crtc *crtc) |
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313 | { |
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314 | struct drm_device *dev; |
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315 | struct drm_crtc *tmp; |
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316 | int crtc_mask = 1; |
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317 | |||
1963 | serge | 318 | WARN(!crtc, "checking null crtc?\n"); |
1123 | serge | 319 | |
320 | dev = crtc->dev; |
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321 | |||
322 | list_for_each_entry(tmp, &dev->mode_config.crtc_list, head) { |
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323 | if (tmp == crtc) |
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324 | break; |
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325 | crtc_mask <<= 1; |
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326 | } |
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327 | |||
328 | if (encoder->possible_crtcs & crtc_mask) |
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329 | return true; |
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330 | return false; |
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331 | } |
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332 | |||
333 | /* |
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334 | * Check the CRTC we're going to map each output to vs. its current |
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335 | * CRTC. If they don't match, we have to disable the output and the CRTC |
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336 | * since the driver will have to re-route things. |
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337 | */ |
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338 | static void |
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339 | drm_crtc_prepare_encoders(struct drm_device *dev) |
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340 | { |
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341 | struct drm_encoder_helper_funcs *encoder_funcs; |
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342 | struct drm_encoder *encoder; |
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343 | |||
344 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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345 | encoder_funcs = encoder->helper_private; |
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346 | /* Disable unused encoders */ |
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347 | if (encoder->crtc == NULL) |
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1963 | serge | 348 | drm_encoder_disable(encoder); |
1123 | serge | 349 | /* Disable encoders whose CRTC is about to change */ |
350 | if (encoder_funcs->get_crtc && |
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351 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
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1963 | serge | 352 | drm_encoder_disable(encoder); |
1123 | serge | 353 | } |
354 | } |
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355 | |||
356 | /** |
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3192 | Serge | 357 | * drm_crtc_helper_set_mode - internal helper to set a mode |
1123 | serge | 358 | * @crtc: CRTC to program |
359 | * @mode: mode to use |
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3192 | Serge | 360 | * @x: horizontal offset into the surface |
361 | * @y: vertical offset into the surface |
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362 | * @old_fb: old framebuffer, for cleanup |
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1123 | serge | 363 | * |
364 | * LOCKING: |
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365 | * Caller must hold mode config lock. |
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366 | * |
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367 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
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3192 | Serge | 368 | * to fixup or reject the mode prior to trying to set it. This is an internal |
369 | * helper that drivers could e.g. use to update properties that require the |
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370 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
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371 | * example for changing whether audio is enabled on a hdmi link or for changing |
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372 | * panel fitter or dither attributes. It is also called by the |
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373 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
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374 | * sequence. |
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1123 | serge | 375 | * |
376 | * RETURNS: |
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377 | * True if the mode was set successfully, or false otherwise. |
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378 | */ |
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379 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
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380 | struct drm_display_mode *mode, |
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381 | int x, int y, |
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382 | struct drm_framebuffer *old_fb) |
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383 | { |
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384 | struct drm_device *dev = crtc->dev; |
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1963 | serge | 385 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
1123 | serge | 386 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
387 | struct drm_encoder_helper_funcs *encoder_funcs; |
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388 | int saved_x, saved_y; |
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389 | struct drm_encoder *encoder; |
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390 | bool ret = true; |
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391 | |||
392 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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393 | if (!crtc->enabled) |
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394 | return true; |
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395 | |||
1963 | serge | 396 | adjusted_mode = drm_mode_duplicate(dev, mode); |
3031 | serge | 397 | if (!adjusted_mode) |
398 | return false; |
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1963 | serge | 399 | |
400 | saved_hwmode = crtc->hwmode; |
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1123 | serge | 401 | saved_mode = crtc->mode; |
402 | saved_x = crtc->x; |
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403 | saved_y = crtc->y; |
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404 | |||
405 | /* Update crtc values up front so the driver can rely on them for mode |
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406 | * setting. |
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407 | */ |
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408 | crtc->mode = *mode; |
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409 | crtc->x = x; |
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410 | crtc->y = y; |
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411 | |||
412 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
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413 | * adjust it according to limitations or connector properties, and also |
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414 | * a chance to reject the mode entirely. |
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415 | */ |
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416 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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417 | |||
418 | if (encoder->crtc != crtc) |
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419 | continue; |
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420 | encoder_funcs = encoder->helper_private; |
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421 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
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422 | adjusted_mode))) { |
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3031 | serge | 423 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
1123 | serge | 424 | goto done; |
425 | } |
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426 | } |
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427 | |||
428 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
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3031 | serge | 429 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
1123 | serge | 430 | goto done; |
431 | } |
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1963 | serge | 432 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
1123 | serge | 433 | |
434 | /* Prepare the encoders and CRTCs before setting the mode. */ |
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435 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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436 | |||
437 | if (encoder->crtc != crtc) |
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438 | continue; |
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439 | encoder_funcs = encoder->helper_private; |
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440 | /* Disable the encoders as the first thing we do. */ |
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441 | encoder_funcs->prepare(encoder); |
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442 | } |
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443 | |||
444 | drm_crtc_prepare_encoders(dev); |
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445 | |||
446 | crtc_funcs->prepare(crtc); |
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447 | |||
448 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
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449 | * on the DPLL. |
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450 | */ |
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451 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
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452 | if (!ret) |
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453 | goto done; |
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454 | |||
455 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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456 | |||
457 | if (encoder->crtc != crtc) |
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458 | continue; |
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459 | |||
1963 | serge | 460 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
461 | encoder->base.id, drm_get_encoder_name(encoder), |
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462 | mode->base.id, mode->name); |
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1123 | serge | 463 | encoder_funcs = encoder->helper_private; |
464 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
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465 | } |
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466 | |||
467 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
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468 | crtc_funcs->commit(crtc); |
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469 | |||
470 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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471 | |||
472 | if (encoder->crtc != crtc) |
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473 | continue; |
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474 | |||
475 | encoder_funcs = encoder->helper_private; |
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476 | encoder_funcs->commit(encoder); |
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477 | |||
478 | } |
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479 | |||
1963 | serge | 480 | /* Store real post-adjustment hardware mode. */ |
481 | crtc->hwmode = *adjusted_mode; |
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482 | |||
483 | /* Calculate and store various constants which |
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484 | * are later needed by vblank and swap-completion |
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485 | * timestamping. They are derived from true hwmode. |
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486 | */ |
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487 | drm_calc_timestamping_constants(crtc); |
||
488 | |||
1123 | serge | 489 | /* FIXME: add subpixel order */ |
490 | done: |
||
1963 | serge | 491 | drm_mode_destroy(dev, adjusted_mode); |
1123 | serge | 492 | if (!ret) { |
1963 | serge | 493 | crtc->hwmode = saved_hwmode; |
1123 | serge | 494 | crtc->mode = saved_mode; |
495 | crtc->x = saved_x; |
||
496 | crtc->y = saved_y; |
||
497 | } |
||
1179 | serge | 498 | |
1123 | serge | 499 | return ret; |
500 | } |
||
501 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
||
502 | |||
503 | |||
3031 | serge | 504 | static int |
505 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
||
506 | { |
||
507 | struct drm_device *dev = crtc->dev; |
||
508 | struct drm_connector *connector; |
||
509 | struct drm_encoder *encoder; |
||
510 | |||
511 | /* Decouple all encoders and their attached connectors from this crtc */ |
||
512 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
513 | if (encoder->crtc != crtc) |
||
514 | continue; |
||
515 | |||
516 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
517 | if (connector->encoder != encoder) |
||
518 | continue; |
||
519 | |||
520 | connector->encoder = NULL; |
||
521 | } |
||
522 | } |
||
523 | |||
524 | drm_helper_disable_unused_functions(dev); |
||
525 | return 0; |
||
526 | } |
||
527 | |||
1123 | serge | 528 | /** |
529 | * drm_crtc_helper_set_config - set a new config from userspace |
||
3192 | Serge | 530 | * @set: mode set configuration |
1123 | serge | 531 | * |
532 | * LOCKING: |
||
533 | * Caller must hold mode config lock. |
||
534 | * |
||
3192 | Serge | 535 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
536 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and |
||
537 | * enable it. This is the main helper functions for drivers that implement |
||
538 | * kernel mode setting with the crtc helper functions and the assorted |
||
539 | * ->prepare(), ->modeset() and ->commit() helper callbacks. |
||
1123 | serge | 540 | * |
541 | * RETURNS: |
||
3192 | Serge | 542 | * Returns 0 on success, -ERRNO on failure. |
1123 | serge | 543 | */ |
544 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
||
545 | { |
||
546 | struct drm_device *dev; |
||
1179 | serge | 547 | struct drm_crtc *save_crtcs, *new_crtc, *crtc; |
548 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
||
1123 | serge | 549 | struct drm_framebuffer *old_fb = NULL; |
1179 | serge | 550 | bool mode_changed = false; /* if true do a full mode set */ |
551 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
||
552 | struct drm_connector *save_connectors, *connector; |
||
1123 | serge | 553 | int count = 0, ro, fail = 0; |
554 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
3031 | serge | 555 | struct drm_mode_set save_set; |
556 | int ret; |
||
1963 | serge | 557 | int i; |
1123 | serge | 558 | |
1179 | serge | 559 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 560 | |
561 | if (!set) |
||
562 | return -EINVAL; |
||
563 | |||
564 | if (!set->crtc) |
||
565 | return -EINVAL; |
||
566 | |||
567 | if (!set->crtc->helper_private) |
||
568 | return -EINVAL; |
||
569 | |||
570 | crtc_funcs = set->crtc->helper_private; |
||
571 | |||
1963 | serge | 572 | if (!set->mode) |
573 | set->fb = NULL; |
||
574 | |||
575 | if (set->fb) { |
||
576 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
||
577 | set->crtc->base.id, set->fb->base.id, |
||
1123 | serge | 578 | (int)set->num_connectors, set->x, set->y); |
1963 | serge | 579 | } else { |
580 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
||
3031 | serge | 581 | return drm_crtc_helper_disable(set->crtc); |
1963 | serge | 582 | } |
1123 | serge | 583 | |
584 | dev = set->crtc->dev; |
||
585 | |||
1179 | serge | 586 | /* Allocate space for the backup of all (non-pointer) crtc, encoder and |
587 | * connector data. */ |
||
588 | save_crtcs = kzalloc(dev->mode_config.num_crtc * |
||
589 | sizeof(struct drm_crtc), GFP_KERNEL); |
||
1123 | serge | 590 | if (!save_crtcs) |
591 | return -ENOMEM; |
||
592 | |||
1179 | serge | 593 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
594 | sizeof(struct drm_encoder), GFP_KERNEL); |
||
1123 | serge | 595 | if (!save_encoders) { |
596 | kfree(save_crtcs); |
||
597 | return -ENOMEM; |
||
598 | } |
||
599 | |||
1179 | serge | 600 | save_connectors = kzalloc(dev->mode_config.num_connector * |
601 | sizeof(struct drm_connector), GFP_KERNEL); |
||
602 | if (!save_connectors) { |
||
603 | kfree(save_crtcs); |
||
604 | kfree(save_encoders); |
||
605 | return -ENOMEM; |
||
606 | } |
||
607 | |||
608 | /* Copy data. Note that driver private data is not affected. |
||
609 | * Should anything bad happen only the expected state is |
||
610 | * restored, not the drivers personal bookkeeping. |
||
611 | */ |
||
612 | count = 0; |
||
613 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
614 | save_crtcs[count++] = *crtc; |
||
615 | } |
||
616 | |||
617 | count = 0; |
||
618 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
619 | save_encoders[count++] = *encoder; |
||
620 | } |
||
621 | |||
622 | count = 0; |
||
623 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
624 | save_connectors[count++] = *connector; |
||
625 | } |
||
626 | |||
3031 | serge | 627 | save_set.crtc = set->crtc; |
628 | save_set.mode = &set->crtc->mode; |
||
629 | save_set.x = set->crtc->x; |
||
630 | save_set.y = set->crtc->y; |
||
631 | save_set.fb = set->crtc->fb; |
||
632 | |||
1123 | serge | 633 | /* We should be able to check here if the fb has the same properties |
634 | * and then just flip_or_move it */ |
||
635 | if (set->crtc->fb != set->fb) { |
||
636 | /* If we have no fb then treat it as a full mode set */ |
||
637 | if (set->crtc->fb == NULL) { |
||
1179 | serge | 638 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
1123 | serge | 639 | mode_changed = true; |
1179 | serge | 640 | } else if (set->fb == NULL) { |
641 | mode_changed = true; |
||
2160 | serge | 642 | } else if (set->fb->depth != set->crtc->fb->depth) { |
643 | mode_changed = true; |
||
644 | } else if (set->fb->bits_per_pixel != |
||
645 | set->crtc->fb->bits_per_pixel) { |
||
646 | mode_changed = true; |
||
1430 | serge | 647 | } else |
1123 | serge | 648 | fb_changed = true; |
649 | } |
||
650 | |||
651 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
||
652 | fb_changed = true; |
||
653 | |||
654 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
||
1179 | serge | 655 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
1123 | serge | 656 | drm_mode_debug_printmodeline(&set->crtc->mode); |
657 | drm_mode_debug_printmodeline(set->mode); |
||
658 | mode_changed = true; |
||
659 | } |
||
660 | |||
661 | /* a) traverse passed in connector list and get encoders for them */ |
||
662 | count = 0; |
||
663 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
664 | struct drm_connector_helper_funcs *connector_funcs = |
||
665 | connector->helper_private; |
||
666 | new_encoder = connector->encoder; |
||
667 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
668 | if (set->connectors[ro] == connector) { |
||
669 | new_encoder = connector_funcs->best_encoder(connector); |
||
670 | /* if we can't get an encoder for a connector |
||
671 | we are setting now - then fail */ |
||
672 | if (new_encoder == NULL) |
||
673 | /* don't break so fail path works correct */ |
||
674 | fail = 1; |
||
675 | break; |
||
676 | } |
||
677 | } |
||
678 | |||
679 | if (new_encoder != connector->encoder) { |
||
1179 | serge | 680 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
1123 | serge | 681 | mode_changed = true; |
1179 | serge | 682 | /* If the encoder is reused for another connector, then |
683 | * the appropriate crtc will be set later. |
||
684 | */ |
||
685 | if (connector->encoder) |
||
686 | connector->encoder->crtc = NULL; |
||
1123 | serge | 687 | connector->encoder = new_encoder; |
688 | } |
||
689 | } |
||
690 | |||
691 | if (fail) { |
||
692 | ret = -EINVAL; |
||
1179 | serge | 693 | goto fail; |
1123 | serge | 694 | } |
695 | |||
696 | count = 0; |
||
697 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
698 | if (!connector->encoder) |
||
699 | continue; |
||
700 | |||
701 | if (connector->encoder->crtc == set->crtc) |
||
702 | new_crtc = NULL; |
||
703 | else |
||
704 | new_crtc = connector->encoder->crtc; |
||
705 | |||
706 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
707 | if (set->connectors[ro] == connector) |
||
708 | new_crtc = set->crtc; |
||
709 | } |
||
710 | |||
711 | /* Make sure the new CRTC will work with the encoder */ |
||
712 | if (new_crtc && |
||
713 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
||
714 | ret = -EINVAL; |
||
1179 | serge | 715 | goto fail; |
1123 | serge | 716 | } |
717 | if (new_crtc != connector->encoder->crtc) { |
||
1179 | serge | 718 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
1123 | serge | 719 | mode_changed = true; |
720 | connector->encoder->crtc = new_crtc; |
||
721 | } |
||
1963 | serge | 722 | if (new_crtc) { |
723 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
||
724 | connector->base.id, drm_get_connector_name(connector), |
||
725 | new_crtc->base.id); |
||
726 | } else { |
||
727 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
||
728 | connector->base.id, drm_get_connector_name(connector)); |
||
729 | } |
||
1123 | serge | 730 | } |
731 | |||
732 | /* mode_set_base is not a required function */ |
||
733 | if (fb_changed && !crtc_funcs->mode_set_base) |
||
734 | mode_changed = true; |
||
735 | |||
736 | if (mode_changed) { |
||
1963 | serge | 737 | set->crtc->enabled = drm_helper_crtc_in_use(set->crtc); |
738 | if (set->crtc->enabled) { |
||
1179 | serge | 739 | DRM_DEBUG_KMS("attempting to set mode from" |
740 | " userspace\n"); |
||
1123 | serge | 741 | drm_mode_debug_printmodeline(set->mode); |
1963 | serge | 742 | old_fb = set->crtc->fb; |
743 | set->crtc->fb = set->fb; |
||
1123 | serge | 744 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
745 | set->x, set->y, |
||
746 | old_fb)) { |
||
1963 | serge | 747 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
748 | set->crtc->base.id); |
||
749 | set->crtc->fb = old_fb; |
||
1123 | serge | 750 | ret = -EINVAL; |
1179 | serge | 751 | goto fail; |
1123 | serge | 752 | } |
1963 | serge | 753 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
754 | for (i = 0; i < set->num_connectors; i++) { |
||
755 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, |
||
756 | drm_get_connector_name(set->connectors[i])); |
||
3031 | serge | 757 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
1963 | serge | 758 | } |
1123 | serge | 759 | } |
760 | drm_helper_disable_unused_functions(dev); |
||
761 | } else if (fb_changed) { |
||
1179 | serge | 762 | set->crtc->x = set->x; |
763 | set->crtc->y = set->y; |
||
764 | |||
1123 | serge | 765 | old_fb = set->crtc->fb; |
766 | if (set->crtc->fb != set->fb) |
||
767 | set->crtc->fb = set->fb; |
||
768 | ret = crtc_funcs->mode_set_base(set->crtc, |
||
769 | set->x, set->y, old_fb); |
||
1963 | serge | 770 | if (ret != 0) { |
771 | set->crtc->fb = old_fb; |
||
1179 | serge | 772 | goto fail; |
1123 | serge | 773 | } |
1963 | serge | 774 | } |
1123 | serge | 775 | |
1179 | serge | 776 | kfree(save_connectors); |
1123 | serge | 777 | kfree(save_encoders); |
778 | kfree(save_crtcs); |
||
779 | return 0; |
||
780 | |||
1179 | serge | 781 | fail: |
782 | /* Restore all previous data. */ |
||
1123 | serge | 783 | count = 0; |
1179 | serge | 784 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
785 | *crtc = save_crtcs[count++]; |
||
786 | } |
||
1123 | serge | 787 | |
1179 | serge | 788 | count = 0; |
789 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
790 | *encoder = save_encoders[count++]; |
||
1123 | serge | 791 | } |
1179 | serge | 792 | |
1123 | serge | 793 | count = 0; |
794 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1179 | serge | 795 | *connector = save_connectors[count++]; |
1123 | serge | 796 | } |
1179 | serge | 797 | |
3031 | serge | 798 | /* Try to restore the config */ |
799 | if (mode_changed && |
||
800 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
||
801 | save_set.y, save_set.fb)) |
||
802 | DRM_ERROR("failed to restore config after modeset failure\n"); |
||
803 | |||
1179 | serge | 804 | kfree(save_connectors); |
1123 | serge | 805 | kfree(save_encoders); |
1179 | serge | 806 | kfree(save_crtcs); |
1123 | serge | 807 | return ret; |
808 | } |
||
809 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
||
810 | |||
811 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
||
812 | { |
||
813 | int dpms = DRM_MODE_DPMS_OFF; |
||
814 | struct drm_connector *connector; |
||
815 | struct drm_device *dev = encoder->dev; |
||
816 | |||
817 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
818 | if (connector->encoder == encoder) |
||
819 | if (connector->dpms < dpms) |
||
820 | dpms = connector->dpms; |
||
821 | return dpms; |
||
822 | } |
||
823 | |||
824 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
||
825 | { |
||
826 | int dpms = DRM_MODE_DPMS_OFF; |
||
827 | struct drm_connector *connector; |
||
828 | struct drm_device *dev = crtc->dev; |
||
829 | |||
830 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
831 | if (connector->encoder && connector->encoder->crtc == crtc) |
||
832 | if (connector->dpms < dpms) |
||
833 | dpms = connector->dpms; |
||
834 | return dpms; |
||
835 | } |
||
836 | |||
837 | /** |
||
3192 | Serge | 838 | * drm_helper_connector_dpms() - connector dpms helper implementation |
839 | * @connector: affected connector |
||
840 | * @mode: DPMS mode |
||
1123 | serge | 841 | * |
3192 | Serge | 842 | * This is the main helper function provided by the crtc helper framework for |
843 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
||
844 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() |
||
845 | * callback provided by the driver appropriately. |
||
1123 | serge | 846 | */ |
847 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
||
848 | { |
||
849 | struct drm_encoder *encoder = connector->encoder; |
||
850 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
||
851 | int old_dpms; |
||
852 | |||
853 | if (mode == connector->dpms) |
||
854 | return; |
||
855 | |||
856 | old_dpms = connector->dpms; |
||
857 | connector->dpms = mode; |
||
858 | |||
859 | /* from off to on, do crtc then encoder */ |
||
860 | if (mode < old_dpms) { |
||
861 | if (crtc) { |
||
862 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
863 | if (crtc_funcs->dpms) |
||
864 | (*crtc_funcs->dpms) (crtc, |
||
865 | drm_helper_choose_crtc_dpms(crtc)); |
||
866 | } |
||
867 | if (encoder) { |
||
868 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
869 | if (encoder_funcs->dpms) |
||
870 | (*encoder_funcs->dpms) (encoder, |
||
871 | drm_helper_choose_encoder_dpms(encoder)); |
||
872 | } |
||
873 | } |
||
874 | |||
875 | /* from on to off, do encoder then crtc */ |
||
876 | if (mode > old_dpms) { |
||
877 | if (encoder) { |
||
878 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
||
879 | if (encoder_funcs->dpms) |
||
880 | (*encoder_funcs->dpms) (encoder, |
||
881 | drm_helper_choose_encoder_dpms(encoder)); |
||
882 | } |
||
883 | if (crtc) { |
||
884 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
885 | if (crtc_funcs->dpms) |
||
886 | (*crtc_funcs->dpms) (crtc, |
||
887 | drm_helper_choose_crtc_dpms(crtc)); |
||
888 | } |
||
889 | } |
||
890 | |||
891 | return; |
||
892 | } |
||
893 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
||
894 | |||
895 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
||
3031 | serge | 896 | struct drm_mode_fb_cmd2 *mode_cmd) |
1123 | serge | 897 | { |
3031 | serge | 898 | int i; |
899 | |||
1123 | serge | 900 | fb->width = mode_cmd->width; |
901 | fb->height = mode_cmd->height; |
||
3031 | serge | 902 | for (i = 0; i < 4; i++) { |
903 | fb->pitches[i] = mode_cmd->pitches[i]; |
||
904 | fb->offsets[i] = mode_cmd->offsets[i]; |
||
905 | } |
||
906 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
||
907 | &fb->bits_per_pixel); |
||
908 | fb->pixel_format = mode_cmd->pixel_format; |
||
1123 | serge | 909 | |
910 | return 0; |
||
911 | } |
||
912 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
||
913 | |||
914 | int drm_helper_resume_force_mode(struct drm_device *dev) |
||
915 | { |
||
916 | struct drm_crtc *crtc; |
||
1404 | serge | 917 | struct drm_encoder *encoder; |
918 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
919 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
1123 | serge | 920 | int ret; |
921 | |||
922 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
923 | |||
1179 | serge | 924 | if (!crtc->enabled) |
925 | continue; |
||
1123 | serge | 926 | |
1179 | serge | 927 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1123 | serge | 928 | crtc->x, crtc->y, crtc->fb); |
929 | |||
930 | if (ret == false) |
||
931 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
||
1404 | serge | 932 | |
933 | /* Turn off outputs that were already powered off */ |
||
934 | if (drm_helper_choose_crtc_dpms(crtc)) { |
||
935 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
936 | |||
937 | if(encoder->crtc != crtc) |
||
938 | continue; |
||
939 | |||
940 | encoder_funcs = encoder->helper_private; |
||
941 | if (encoder_funcs->dpms) |
||
942 | (*encoder_funcs->dpms) (encoder, |
||
943 | drm_helper_choose_encoder_dpms(encoder)); |
||
1963 | serge | 944 | } |
1404 | serge | 945 | |
946 | crtc_funcs = crtc->helper_private; |
||
947 | if (crtc_funcs->dpms) |
||
948 | (*crtc_funcs->dpms) (crtc, |
||
949 | drm_helper_choose_crtc_dpms(crtc)); |
||
950 | } |
||
951 | } |
||
1179 | serge | 952 | /* disable the unused connectors while restoring the modesetting */ |
953 | drm_helper_disable_unused_functions(dev); |
||
1123 | serge | 954 | return 0; |
955 | } |
||
956 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
||
1963 | serge | 957 | |
958 | #if 0 |
||
959 | |||
960 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
||
961 | static void output_poll_execute(struct work_struct *work) |
||
962 | { |
||
963 | struct delayed_work *delayed_work = to_delayed_work(work); |
||
964 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); |
||
965 | struct drm_connector *connector; |
||
966 | enum drm_connector_status old_status; |
||
967 | bool repoll = false, changed = false; |
||
968 | |||
969 | if (!drm_kms_helper_poll) |
||
970 | return; |
||
971 | |||
972 | mutex_lock(&dev->mode_config.mutex); |
||
973 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
974 | |||
3192 | Serge | 975 | /* Ignore forced connectors. */ |
976 | if (connector->force) |
||
1963 | serge | 977 | continue; |
978 | |||
3192 | Serge | 979 | /* Ignore HPD capable connectors and connectors where we don't |
980 | * want any hotplug detection at all for polling. */ |
||
981 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) |
||
982 | continue; |
||
983 | |||
1963 | serge | 984 | repoll = true; |
985 | |||
986 | old_status = connector->status; |
||
987 | /* if we are connected and don't want to poll for disconnect |
||
988 | skip it */ |
||
989 | if (old_status == connector_status_connected && |
||
3192 | Serge | 990 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
1963 | serge | 991 | continue; |
992 | |||
993 | connector->status = connector->funcs->detect(connector, false); |
||
994 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
||
995 | connector->base.id, |
||
996 | drm_get_connector_name(connector), |
||
997 | old_status, connector->status); |
||
998 | if (old_status != connector->status) |
||
999 | changed = true; |
||
1000 | } |
||
1001 | |||
1002 | mutex_unlock(&dev->mode_config.mutex); |
||
1003 | |||
3192 | Serge | 1004 | if (changed) |
1005 | drm_kms_helper_hotplug_event(dev); |
||
1963 | serge | 1006 | |
1007 | if (repoll) |
||
3031 | serge | 1008 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
1963 | serge | 1009 | } |
1010 | |||
1011 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
||
1012 | { |
||
1013 | if (!dev->mode_config.poll_enabled) |
||
1014 | return; |
||
1015 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
||
1016 | } |
||
1017 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); |
||
1018 | |||
1019 | void drm_kms_helper_poll_enable(struct drm_device *dev) |
||
1020 | { |
||
1021 | bool poll = false; |
||
1022 | struct drm_connector *connector; |
||
1023 | |||
1024 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
||
1025 | return; |
||
1026 | |||
1027 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
3192 | Serge | 1028 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1029 | DRM_CONNECTOR_POLL_DISCONNECT)) |
||
1963 | serge | 1030 | poll = true; |
1031 | } |
||
1032 | |||
1033 | if (poll) |
||
3031 | serge | 1034 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
1963 | serge | 1035 | } |
1036 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
||
1037 | |||
1038 | void drm_kms_helper_poll_init(struct drm_device *dev) |
||
1039 | { |
||
1040 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
||
1041 | dev->mode_config.poll_enabled = true; |
||
1042 | |||
1043 | drm_kms_helper_poll_enable(dev); |
||
1044 | } |
||
1045 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
||
1046 | |||
1047 | void drm_kms_helper_poll_fini(struct drm_device *dev) |
||
1048 | { |
||
1049 | drm_kms_helper_poll_disable(dev); |
||
1050 | } |
||
1051 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); |
||
1052 | |||
1053 | void drm_helper_hpd_irq_event(struct drm_device *dev) |
||
1054 | { |
||
3192 | Serge | 1055 | struct drm_connector *connector; |
1056 | enum drm_connector_status old_status; |
||
1057 | bool changed = false; |
||
1058 | |||
1963 | serge | 1059 | if (!dev->mode_config.poll_enabled) |
1060 | return; |
||
1061 | |||
3192 | Serge | 1062 | mutex_lock(&dev->mode_config.mutex); |
1063 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1064 | |||
1065 | /* Only handle HPD capable connectors. */ |
||
1066 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) |
||
1067 | continue; |
||
1068 | |||
1069 | old_status = connector->status; |
||
1070 | |||
1071 | connector->status = connector->funcs->detect(connector, false); |
||
1072 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %d to %d\n", |
||
1073 | connector->base.id, |
||
1074 | drm_get_connector_name(connector), |
||
1075 | old_status, connector->status); |
||
1076 | if (old_status != connector->status) |
||
1077 | changed = true; |
||
1078 | } |
||
1079 | |||
1080 | mutex_unlock(&dev->mode_config.mutex); |
||
1081 | |||
1082 | if (changed) |
||
1083 | drm_kms_helper_hotplug_event(dev); |
||
1963 | serge | 1084 | } |
1085 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |
||
1086 | |||
1087 | #endif>>>>>>>=><=> |