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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 | |||
4560 | Serge | 42 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
43 | MODULE_DESCRIPTION("DRM KMS helper"); |
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44 | MODULE_LICENSE("GPL and additional rights"); |
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45 | |||
3192 | Serge | 46 | /** |
47 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the |
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48 | * connector list |
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49 | * @dev: drm device to operate on |
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50 | * |
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51 | * Some userspace presumes that the first connected connector is the main |
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52 | * display, where it's supposed to display e.g. the login screen. For |
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53 | * laptops, this should be the main panel. Use this function to sort all |
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54 | * (eDP/LVDS) panels to the front of the connector list, instead of |
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55 | * painstakingly trying to initialize them in the right order. |
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56 | */ |
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57 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
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58 | { |
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59 | struct drm_connector *connector, *tmp; |
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60 | struct list_head panel_list; |
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61 | |||
62 | INIT_LIST_HEAD(&panel_list); |
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63 | |||
64 | list_for_each_entry_safe(connector, tmp, |
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65 | &dev->mode_config.connector_list, head) { |
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66 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || |
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67 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
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68 | list_move_tail(&connector->head, &panel_list); |
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69 | } |
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70 | |||
71 | list_splice(&panel_list, &dev->mode_config.connector_list); |
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72 | } |
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73 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); |
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74 | |||
1963 | serge | 75 | static bool drm_kms_helper_poll = true; |
3480 | Serge | 76 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); |
1963 | serge | 77 | |
1123 | serge | 78 | static void drm_mode_validate_flag(struct drm_connector *connector, |
79 | int flags) |
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80 | { |
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3031 | serge | 81 | struct drm_display_mode *mode; |
1123 | serge | 82 | |
4560 | Serge | 83 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE | |
84 | DRM_MODE_FLAG_3D_MASK)) |
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1123 | serge | 85 | return; |
86 | |||
3031 | serge | 87 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 88 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
89 | !(flags & DRM_MODE_FLAG_INTERLACE)) |
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90 | mode->status = MODE_NO_INTERLACE; |
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91 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && |
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92 | !(flags & DRM_MODE_FLAG_DBLSCAN)) |
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93 | mode->status = MODE_NO_DBLESCAN; |
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4560 | Serge | 94 | if ((mode->flags & DRM_MODE_FLAG_3D_MASK) && |
95 | !(flags & DRM_MODE_FLAG_3D_MASK)) |
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96 | mode->status = MODE_NO_STEREO; |
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1123 | serge | 97 | } |
98 | |||
99 | return; |
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100 | } |
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101 | |||
102 | /** |
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1963 | serge | 103 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
3192 | Serge | 104 | * @connector: connector to probe |
1123 | serge | 105 | * @maxX: max width for modes |
106 | * @maxY: max height for modes |
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107 | * |
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108 | * LOCKING: |
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109 | * Caller must hold mode config lock. |
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110 | * |
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3192 | Serge | 111 | * Based on the helper callbacks implemented by @connector try to detect all |
112 | * valid modes. Modes will first be added to the connector's probed_modes list, |
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113 | * then culled (based on validity and the @maxX, @maxY parameters) and put into |
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114 | * the normal modes list. |
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1123 | serge | 115 | * |
4560 | Serge | 116 | * Intended to be use as a generic implementation of the ->fill_modes() |
117 | * @connector vfunc for drivers that use the crtc helpers for output mode |
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118 | * filtering and detection. |
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1123 | serge | 119 | * |
120 | * RETURNS: |
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121 | * Number of modes found on @connector. |
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122 | */ |
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123 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
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124 | uint32_t maxX, uint32_t maxY) |
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125 | { |
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126 | struct drm_device *dev = connector->dev; |
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3031 | serge | 127 | struct drm_display_mode *mode; |
1123 | serge | 128 | struct drm_connector_helper_funcs *connector_funcs = |
129 | connector->helper_private; |
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130 | int count = 0; |
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131 | int mode_flags = 0; |
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3764 | Serge | 132 | bool verbose_prune = true; |
1123 | serge | 133 | |
1963 | serge | 134 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
135 | drm_get_connector_name(connector)); |
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1123 | serge | 136 | /* set all modes to the unverified state */ |
3031 | serge | 137 | list_for_each_entry(mode, &connector->modes, head) |
1123 | serge | 138 | mode->status = MODE_UNVERIFIED; |
139 | |||
1221 | serge | 140 | if (connector->force) { |
141 | if (connector->force == DRM_FORCE_ON) |
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142 | connector->status = connector_status_connected; |
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143 | else |
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144 | connector->status = connector_status_disconnected; |
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145 | if (connector->funcs->force) |
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146 | connector->funcs->force(connector); |
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1963 | serge | 147 | } else { |
148 | connector->status = connector->funcs->detect(connector, true); |
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149 | } |
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1123 | serge | 150 | |
3480 | Serge | 151 | /* Re-enable polling in case the global poll config changed. */ |
152 | if (drm_kms_helper_poll != dev->mode_config.poll_running) |
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153 | drm_kms_helper_poll_enable(dev); |
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154 | |||
155 | dev->mode_config.poll_running = drm_kms_helper_poll; |
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156 | |||
1123 | serge | 157 | if (connector->status == connector_status_disconnected) { |
1963 | serge | 158 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
159 | connector->base.id, drm_get_connector_name(connector)); |
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160 | drm_mode_connector_update_edid_property(connector, NULL); |
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3764 | Serge | 161 | verbose_prune = false; |
1179 | serge | 162 | goto prune; |
1123 | serge | 163 | } |
164 | |||
3031 | serge | 165 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
166 | count = drm_load_edid_firmware(connector); |
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167 | if (count == 0) |
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168 | #endif |
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1123 | serge | 169 | count = (*connector_funcs->get_modes)(connector); |
3031 | serge | 170 | |
1963 | serge | 171 | if (count == 0 && connector->status == connector_status_connected) |
1321 | serge | 172 | count = drm_add_modes_noedid(connector, 1024, 768); |
1963 | serge | 173 | if (count == 0) |
174 | goto prune; |
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1123 | serge | 175 | |
176 | drm_mode_connector_list_update(connector); |
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177 | |||
178 | if (maxX && maxY) |
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179 | drm_mode_validate_size(dev, &connector->modes, maxX, |
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180 | maxY, 0); |
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181 | |||
182 | if (connector->interlace_allowed) |
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183 | mode_flags |= DRM_MODE_FLAG_INTERLACE; |
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184 | if (connector->doublescan_allowed) |
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185 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; |
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4560 | Serge | 186 | if (connector->stereo_allowed) |
187 | mode_flags |= DRM_MODE_FLAG_3D_MASK; |
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1123 | serge | 188 | drm_mode_validate_flag(connector, mode_flags); |
189 | |||
3031 | serge | 190 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 191 | if (mode->status == MODE_OK) |
192 | mode->status = connector_funcs->mode_valid(connector, |
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193 | mode); |
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194 | } |
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195 | |||
1179 | serge | 196 | prune: |
3764 | Serge | 197 | drm_mode_prune_invalid(dev, &connector->modes, verbose_prune); |
1123 | serge | 198 | |
199 | if (list_empty(&connector->modes)) |
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200 | return 0; |
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201 | |||
4075 | Serge | 202 | list_for_each_entry(mode, &connector->modes, head) |
203 | mode->vrefresh = drm_mode_vrefresh(mode); |
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204 | |||
1123 | serge | 205 | drm_mode_sort(&connector->modes); |
206 | |||
1963 | serge | 207 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
1179 | serge | 208 | drm_get_connector_name(connector)); |
3031 | serge | 209 | list_for_each_entry(mode, &connector->modes, head) { |
1123 | serge | 210 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
211 | drm_mode_debug_printmodeline(mode); |
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212 | } |
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213 | |||
214 | return count; |
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215 | } |
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216 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
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217 | |||
218 | /** |
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219 | * drm_helper_encoder_in_use - check if a given encoder is in use |
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220 | * @encoder: encoder to check |
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221 | * |
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222 | * LOCKING: |
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223 | * Caller must hold mode config lock. |
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224 | * |
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225 | * Walk @encoders's DRM device's mode_config and see if it's in use. |
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226 | * |
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227 | * RETURNS: |
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228 | * True if @encoder is part of the mode_config, false otherwise. |
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229 | */ |
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230 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
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231 | { |
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232 | struct drm_connector *connector; |
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233 | struct drm_device *dev = encoder->dev; |
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234 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
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235 | if (connector->encoder == encoder) |
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236 | return true; |
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237 | return false; |
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238 | } |
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239 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
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240 | |||
241 | /** |
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242 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
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243 | * @crtc: CRTC to check |
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244 | * |
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245 | * LOCKING: |
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246 | * Caller must hold mode config lock. |
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247 | * |
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248 | * Walk @crtc's DRM device's mode_config and see if it's in use. |
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249 | * |
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250 | * RETURNS: |
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251 | * True if @crtc is part of the mode_config, false otherwise. |
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252 | */ |
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253 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
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254 | { |
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255 | struct drm_encoder *encoder; |
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256 | struct drm_device *dev = crtc->dev; |
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257 | /* FIXME: Locking around list access? */ |
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258 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
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259 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
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260 | return true; |
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261 | return false; |
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262 | } |
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263 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
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264 | |||
1963 | serge | 265 | static void |
266 | drm_encoder_disable(struct drm_encoder *encoder) |
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267 | { |
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268 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
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269 | |||
4104 | Serge | 270 | if (encoder->bridge) |
271 | encoder->bridge->funcs->disable(encoder->bridge); |
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272 | |||
1963 | serge | 273 | if (encoder_funcs->disable) |
274 | (*encoder_funcs->disable)(encoder); |
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275 | else |
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276 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
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4104 | Serge | 277 | |
278 | if (encoder->bridge) |
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279 | encoder->bridge->funcs->post_disable(encoder->bridge); |
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1963 | serge | 280 | } |
281 | |||
1123 | serge | 282 | /** |
1404 | serge | 283 | * drm_helper_disable_unused_functions - disable unused objects |
1123 | serge | 284 | * @dev: DRM device |
285 | * |
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286 | * LOCKING: |
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287 | * Caller must hold mode config lock. |
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288 | * |
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289 | * If an connector or CRTC isn't part of @dev's mode_config, it can be disabled |
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290 | * by calling its dpms function, which should power it off. |
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291 | */ |
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292 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
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293 | { |
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294 | struct drm_encoder *encoder; |
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1179 | serge | 295 | struct drm_connector *connector; |
1123 | serge | 296 | struct drm_crtc *crtc; |
297 | |||
1179 | serge | 298 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
299 | if (!connector->encoder) |
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300 | continue; |
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301 | if (connector->status == connector_status_disconnected) |
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302 | connector->encoder = NULL; |
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303 | } |
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304 | |||
1123 | serge | 305 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
1179 | serge | 306 | if (!drm_helper_encoder_in_use(encoder)) { |
1963 | serge | 307 | drm_encoder_disable(encoder); |
1179 | serge | 308 | /* disconnector encoder from any connector */ |
309 | encoder->crtc = NULL; |
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310 | } |
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1123 | serge | 311 | } |
312 | |||
313 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
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314 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
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315 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
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316 | if (!crtc->enabled) { |
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1963 | serge | 317 | if (crtc_funcs->disable) |
318 | (*crtc_funcs->disable)(crtc); |
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319 | else |
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320 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
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1123 | serge | 321 | crtc->fb = NULL; |
322 | } |
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323 | } |
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324 | } |
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325 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
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326 | |||
327 | /* |
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328 | * Check the CRTC we're going to map each output to vs. its current |
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329 | * CRTC. If they don't match, we have to disable the output and the CRTC |
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330 | * since the driver will have to re-route things. |
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331 | */ |
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332 | static void |
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333 | drm_crtc_prepare_encoders(struct drm_device *dev) |
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334 | { |
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335 | struct drm_encoder_helper_funcs *encoder_funcs; |
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336 | struct drm_encoder *encoder; |
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337 | |||
338 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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339 | encoder_funcs = encoder->helper_private; |
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340 | /* Disable unused encoders */ |
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341 | if (encoder->crtc == NULL) |
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1963 | serge | 342 | drm_encoder_disable(encoder); |
1123 | serge | 343 | /* Disable encoders whose CRTC is about to change */ |
344 | if (encoder_funcs->get_crtc && |
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345 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
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1963 | serge | 346 | drm_encoder_disable(encoder); |
1123 | serge | 347 | } |
348 | } |
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349 | |||
350 | /** |
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3192 | Serge | 351 | * drm_crtc_helper_set_mode - internal helper to set a mode |
1123 | serge | 352 | * @crtc: CRTC to program |
353 | * @mode: mode to use |
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3192 | Serge | 354 | * @x: horizontal offset into the surface |
355 | * @y: vertical offset into the surface |
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356 | * @old_fb: old framebuffer, for cleanup |
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1123 | serge | 357 | * |
358 | * LOCKING: |
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359 | * Caller must hold mode config lock. |
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360 | * |
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361 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
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3192 | Serge | 362 | * to fixup or reject the mode prior to trying to set it. This is an internal |
363 | * helper that drivers could e.g. use to update properties that require the |
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364 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
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365 | * example for changing whether audio is enabled on a hdmi link or for changing |
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366 | * panel fitter or dither attributes. It is also called by the |
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367 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
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368 | * sequence. |
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1123 | serge | 369 | * |
370 | * RETURNS: |
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371 | * True if the mode was set successfully, or false otherwise. |
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372 | */ |
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373 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
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374 | struct drm_display_mode *mode, |
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375 | int x, int y, |
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376 | struct drm_framebuffer *old_fb) |
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377 | { |
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378 | struct drm_device *dev = crtc->dev; |
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4560 | Serge | 379 | struct drm_display_mode *adjusted_mode, saved_mode; |
1123 | serge | 380 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
381 | struct drm_encoder_helper_funcs *encoder_funcs; |
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382 | int saved_x, saved_y; |
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4560 | Serge | 383 | bool saved_enabled; |
1123 | serge | 384 | struct drm_encoder *encoder; |
385 | bool ret = true; |
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386 | |||
4560 | Serge | 387 | saved_enabled = crtc->enabled; |
1123 | serge | 388 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
389 | if (!crtc->enabled) |
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390 | return true; |
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391 | |||
1963 | serge | 392 | adjusted_mode = drm_mode_duplicate(dev, mode); |
4560 | Serge | 393 | if (!adjusted_mode) { |
394 | crtc->enabled = saved_enabled; |
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3031 | serge | 395 | return false; |
4560 | Serge | 396 | } |
1963 | serge | 397 | |
1123 | serge | 398 | saved_mode = crtc->mode; |
399 | saved_x = crtc->x; |
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400 | saved_y = crtc->y; |
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401 | |||
402 | /* Update crtc values up front so the driver can rely on them for mode |
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403 | * setting. |
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404 | */ |
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405 | crtc->mode = *mode; |
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406 | crtc->x = x; |
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407 | crtc->y = y; |
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408 | |||
409 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
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410 | * adjust it according to limitations or connector properties, and also |
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411 | * a chance to reject the mode entirely. |
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412 | */ |
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413 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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414 | |||
415 | if (encoder->crtc != crtc) |
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416 | continue; |
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4104 | Serge | 417 | |
418 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { |
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419 | ret = encoder->bridge->funcs->mode_fixup( |
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420 | encoder->bridge, mode, adjusted_mode); |
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421 | if (!ret) { |
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422 | DRM_DEBUG_KMS("Bridge fixup failed\n"); |
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423 | goto done; |
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424 | } |
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425 | } |
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426 | |||
1123 | serge | 427 | encoder_funcs = encoder->helper_private; |
428 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
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429 | adjusted_mode))) { |
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3031 | serge | 430 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
1123 | serge | 431 | goto done; |
432 | } |
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433 | } |
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434 | |||
435 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
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3031 | serge | 436 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
1123 | serge | 437 | goto done; |
438 | } |
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1963 | serge | 439 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
1123 | serge | 440 | |
441 | /* Prepare the encoders and CRTCs before setting the mode. */ |
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442 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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443 | |||
444 | if (encoder->crtc != crtc) |
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445 | continue; |
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4104 | Serge | 446 | |
447 | if (encoder->bridge) |
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448 | encoder->bridge->funcs->disable(encoder->bridge); |
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449 | |||
1123 | serge | 450 | encoder_funcs = encoder->helper_private; |
451 | /* Disable the encoders as the first thing we do. */ |
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452 | encoder_funcs->prepare(encoder); |
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4104 | Serge | 453 | |
454 | if (encoder->bridge) |
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455 | encoder->bridge->funcs->post_disable(encoder->bridge); |
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1123 | serge | 456 | } |
457 | |||
458 | drm_crtc_prepare_encoders(dev); |
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459 | |||
460 | crtc_funcs->prepare(crtc); |
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461 | |||
462 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
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463 | * on the DPLL. |
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464 | */ |
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465 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
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466 | if (!ret) |
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467 | goto done; |
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468 | |||
469 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
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470 | |||
471 | if (encoder->crtc != crtc) |
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472 | continue; |
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473 | |||
1963 | serge | 474 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
475 | encoder->base.id, drm_get_encoder_name(encoder), |
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476 | mode->base.id, mode->name); |
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1123 | serge | 477 | encoder_funcs = encoder->helper_private; |
478 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
||
4104 | Serge | 479 | |
480 | if (encoder->bridge && encoder->bridge->funcs->mode_set) |
||
481 | encoder->bridge->funcs->mode_set(encoder->bridge, mode, |
||
482 | adjusted_mode); |
||
1123 | serge | 483 | } |
484 | |||
485 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
||
486 | crtc_funcs->commit(crtc); |
||
487 | |||
488 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
489 | |||
490 | if (encoder->crtc != crtc) |
||
491 | continue; |
||
492 | |||
4104 | Serge | 493 | if (encoder->bridge) |
494 | encoder->bridge->funcs->pre_enable(encoder->bridge); |
||
495 | |||
1123 | serge | 496 | encoder_funcs = encoder->helper_private; |
497 | encoder_funcs->commit(encoder); |
||
498 | |||
4104 | Serge | 499 | if (encoder->bridge) |
500 | encoder->bridge->funcs->enable(encoder->bridge); |
||
1123 | serge | 501 | } |
502 | |||
1963 | serge | 503 | /* Store real post-adjustment hardware mode. */ |
504 | crtc->hwmode = *adjusted_mode; |
||
505 | |||
506 | /* Calculate and store various constants which |
||
507 | * are later needed by vblank and swap-completion |
||
508 | * timestamping. They are derived from true hwmode. |
||
509 | */ |
||
4560 | Serge | 510 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
1963 | serge | 511 | |
1123 | serge | 512 | /* FIXME: add subpixel order */ |
513 | done: |
||
1963 | serge | 514 | drm_mode_destroy(dev, adjusted_mode); |
1123 | serge | 515 | if (!ret) { |
4560 | Serge | 516 | crtc->enabled = saved_enabled; |
1123 | serge | 517 | crtc->mode = saved_mode; |
518 | crtc->x = saved_x; |
||
519 | crtc->y = saved_y; |
||
520 | } |
||
1179 | serge | 521 | |
1123 | serge | 522 | return ret; |
523 | } |
||
524 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
||
525 | |||
526 | |||
3031 | serge | 527 | static int |
528 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
||
529 | { |
||
530 | struct drm_device *dev = crtc->dev; |
||
531 | struct drm_connector *connector; |
||
532 | struct drm_encoder *encoder; |
||
533 | |||
534 | /* Decouple all encoders and their attached connectors from this crtc */ |
||
535 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
536 | if (encoder->crtc != crtc) |
||
537 | continue; |
||
538 | |||
539 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
540 | if (connector->encoder != encoder) |
||
541 | continue; |
||
542 | |||
543 | connector->encoder = NULL; |
||
4560 | Serge | 544 | |
545 | /* |
||
546 | * drm_helper_disable_unused_functions() ought to be |
||
547 | * doing this, but since we've decoupled the encoder |
||
548 | * from the connector above, the required connection |
||
549 | * between them is henceforth no longer available. |
||
550 | */ |
||
551 | connector->dpms = DRM_MODE_DPMS_OFF; |
||
3031 | serge | 552 | } |
553 | } |
||
554 | |||
555 | drm_helper_disable_unused_functions(dev); |
||
556 | return 0; |
||
557 | } |
||
558 | |||
1123 | serge | 559 | /** |
560 | * drm_crtc_helper_set_config - set a new config from userspace |
||
3192 | Serge | 561 | * @set: mode set configuration |
1123 | serge | 562 | * |
563 | * LOCKING: |
||
564 | * Caller must hold mode config lock. |
||
565 | * |
||
3192 | Serge | 566 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
567 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and |
||
568 | * enable it. This is the main helper functions for drivers that implement |
||
569 | * kernel mode setting with the crtc helper functions and the assorted |
||
570 | * ->prepare(), ->modeset() and ->commit() helper callbacks. |
||
1123 | serge | 571 | * |
572 | * RETURNS: |
||
3192 | Serge | 573 | * Returns 0 on success, -ERRNO on failure. |
1123 | serge | 574 | */ |
575 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
||
576 | { |
||
577 | struct drm_device *dev; |
||
4560 | Serge | 578 | struct drm_crtc *new_crtc; |
1179 | serge | 579 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
580 | bool mode_changed = false; /* if true do a full mode set */ |
||
581 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
||
582 | struct drm_connector *save_connectors, *connector; |
||
1123 | serge | 583 | int count = 0, ro, fail = 0; |
584 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
3031 | serge | 585 | struct drm_mode_set save_set; |
586 | int ret; |
||
1963 | serge | 587 | int i; |
1123 | serge | 588 | |
1179 | serge | 589 | DRM_DEBUG_KMS("\n"); |
1123 | serge | 590 | |
4075 | Serge | 591 | BUG_ON(!set); |
592 | BUG_ON(!set->crtc); |
||
593 | BUG_ON(!set->crtc->helper_private); |
||
1123 | serge | 594 | |
4075 | Serge | 595 | /* Enforce sane interface api - has been abused by the fb helper. */ |
596 | BUG_ON(!set->mode && set->fb); |
||
597 | BUG_ON(set->fb && set->num_connectors == 0); |
||
1123 | serge | 598 | |
599 | crtc_funcs = set->crtc->helper_private; |
||
600 | |||
1963 | serge | 601 | if (!set->mode) |
602 | set->fb = NULL; |
||
603 | |||
604 | if (set->fb) { |
||
605 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
||
606 | set->crtc->base.id, set->fb->base.id, |
||
1123 | serge | 607 | (int)set->num_connectors, set->x, set->y); |
1963 | serge | 608 | } else { |
609 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
||
3031 | serge | 610 | return drm_crtc_helper_disable(set->crtc); |
1963 | serge | 611 | } |
1123 | serge | 612 | |
613 | dev = set->crtc->dev; |
||
614 | |||
4560 | Serge | 615 | /* |
616 | * Allocate space for the backup of all (non-pointer) encoder and |
||
617 | * connector data. |
||
618 | */ |
||
1179 | serge | 619 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
620 | sizeof(struct drm_encoder), GFP_KERNEL); |
||
4560 | Serge | 621 | if (!save_encoders) |
1123 | serge | 622 | return -ENOMEM; |
623 | |||
1179 | serge | 624 | save_connectors = kzalloc(dev->mode_config.num_connector * |
625 | sizeof(struct drm_connector), GFP_KERNEL); |
||
626 | if (!save_connectors) { |
||
627 | kfree(save_encoders); |
||
628 | return -ENOMEM; |
||
629 | } |
||
630 | |||
4560 | Serge | 631 | /* |
632 | * Copy data. Note that driver private data is not affected. |
||
1179 | serge | 633 | * Should anything bad happen only the expected state is |
634 | * restored, not the drivers personal bookkeeping. |
||
635 | */ |
||
636 | count = 0; |
||
637 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
638 | save_encoders[count++] = *encoder; |
||
639 | } |
||
640 | |||
641 | count = 0; |
||
642 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
643 | save_connectors[count++] = *connector; |
||
644 | } |
||
645 | |||
3031 | serge | 646 | save_set.crtc = set->crtc; |
647 | save_set.mode = &set->crtc->mode; |
||
648 | save_set.x = set->crtc->x; |
||
649 | save_set.y = set->crtc->y; |
||
650 | save_set.fb = set->crtc->fb; |
||
651 | |||
1123 | serge | 652 | /* We should be able to check here if the fb has the same properties |
653 | * and then just flip_or_move it */ |
||
654 | if (set->crtc->fb != set->fb) { |
||
655 | /* If we have no fb then treat it as a full mode set */ |
||
656 | if (set->crtc->fb == NULL) { |
||
1179 | serge | 657 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
1123 | serge | 658 | mode_changed = true; |
1179 | serge | 659 | } else if (set->fb == NULL) { |
660 | mode_changed = true; |
||
3746 | Serge | 661 | } else if (set->fb->pixel_format != |
662 | set->crtc->fb->pixel_format) { |
||
663 | mode_changed = true; |
||
1430 | serge | 664 | } else |
1123 | serge | 665 | fb_changed = true; |
666 | } |
||
667 | |||
668 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
||
669 | fb_changed = true; |
||
670 | |||
671 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
||
1179 | serge | 672 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
1123 | serge | 673 | drm_mode_debug_printmodeline(&set->crtc->mode); |
674 | drm_mode_debug_printmodeline(set->mode); |
||
675 | mode_changed = true; |
||
676 | } |
||
677 | |||
678 | /* a) traverse passed in connector list and get encoders for them */ |
||
679 | count = 0; |
||
680 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
681 | struct drm_connector_helper_funcs *connector_funcs = |
||
682 | connector->helper_private; |
||
683 | new_encoder = connector->encoder; |
||
684 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
685 | if (set->connectors[ro] == connector) { |
||
686 | new_encoder = connector_funcs->best_encoder(connector); |
||
687 | /* if we can't get an encoder for a connector |
||
688 | we are setting now - then fail */ |
||
689 | if (new_encoder == NULL) |
||
690 | /* don't break so fail path works correct */ |
||
691 | fail = 1; |
||
692 | break; |
||
4075 | Serge | 693 | |
694 | if (connector->dpms != DRM_MODE_DPMS_ON) { |
||
695 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); |
||
696 | mode_changed = true; |
||
697 | } |
||
1123 | serge | 698 | } |
699 | } |
||
700 | |||
701 | if (new_encoder != connector->encoder) { |
||
1179 | serge | 702 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
1123 | serge | 703 | mode_changed = true; |
1179 | serge | 704 | /* If the encoder is reused for another connector, then |
705 | * the appropriate crtc will be set later. |
||
706 | */ |
||
707 | if (connector->encoder) |
||
708 | connector->encoder->crtc = NULL; |
||
1123 | serge | 709 | connector->encoder = new_encoder; |
710 | } |
||
711 | } |
||
712 | |||
713 | if (fail) { |
||
714 | ret = -EINVAL; |
||
1179 | serge | 715 | goto fail; |
1123 | serge | 716 | } |
717 | |||
718 | count = 0; |
||
719 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
720 | if (!connector->encoder) |
||
721 | continue; |
||
722 | |||
723 | if (connector->encoder->crtc == set->crtc) |
||
724 | new_crtc = NULL; |
||
725 | else |
||
726 | new_crtc = connector->encoder->crtc; |
||
727 | |||
728 | for (ro = 0; ro < set->num_connectors; ro++) { |
||
729 | if (set->connectors[ro] == connector) |
||
730 | new_crtc = set->crtc; |
||
731 | } |
||
732 | |||
733 | /* Make sure the new CRTC will work with the encoder */ |
||
734 | if (new_crtc && |
||
735 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
||
736 | ret = -EINVAL; |
||
1179 | serge | 737 | goto fail; |
1123 | serge | 738 | } |
739 | if (new_crtc != connector->encoder->crtc) { |
||
1179 | serge | 740 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
1123 | serge | 741 | mode_changed = true; |
742 | connector->encoder->crtc = new_crtc; |
||
743 | } |
||
1963 | serge | 744 | if (new_crtc) { |
745 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
||
746 | connector->base.id, drm_get_connector_name(connector), |
||
747 | new_crtc->base.id); |
||
748 | } else { |
||
749 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
||
750 | connector->base.id, drm_get_connector_name(connector)); |
||
751 | } |
||
1123 | serge | 752 | } |
753 | |||
754 | /* mode_set_base is not a required function */ |
||
755 | if (fb_changed && !crtc_funcs->mode_set_base) |
||
756 | mode_changed = true; |
||
757 | |||
758 | if (mode_changed) { |
||
4560 | Serge | 759 | if (drm_helper_crtc_in_use(set->crtc)) { |
1179 | serge | 760 | DRM_DEBUG_KMS("attempting to set mode from" |
761 | " userspace\n"); |
||
1123 | serge | 762 | drm_mode_debug_printmodeline(set->mode); |
1963 | serge | 763 | set->crtc->fb = set->fb; |
1123 | serge | 764 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
765 | set->x, set->y, |
||
4560 | Serge | 766 | save_set.fb)) { |
1963 | serge | 767 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
768 | set->crtc->base.id); |
||
4560 | Serge | 769 | set->crtc->fb = save_set.fb; |
1123 | serge | 770 | ret = -EINVAL; |
1179 | serge | 771 | goto fail; |
1123 | serge | 772 | } |
1963 | serge | 773 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
774 | for (i = 0; i < set->num_connectors; i++) { |
||
775 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, |
||
776 | drm_get_connector_name(set->connectors[i])); |
||
3031 | serge | 777 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
1963 | serge | 778 | } |
1123 | serge | 779 | } |
780 | drm_helper_disable_unused_functions(dev); |
||
781 | } else if (fb_changed) { |
||
1179 | serge | 782 | set->crtc->x = set->x; |
783 | set->crtc->y = set->y; |
||
1123 | serge | 784 | set->crtc->fb = set->fb; |
785 | ret = crtc_funcs->mode_set_base(set->crtc, |
||
4560 | Serge | 786 | set->x, set->y, save_set.fb); |
1963 | serge | 787 | if (ret != 0) { |
4560 | Serge | 788 | set->crtc->x = save_set.x; |
789 | set->crtc->y = save_set.y; |
||
790 | set->crtc->fb = save_set.fb; |
||
1179 | serge | 791 | goto fail; |
1123 | serge | 792 | } |
1963 | serge | 793 | } |
1123 | serge | 794 | |
1179 | serge | 795 | kfree(save_connectors); |
1123 | serge | 796 | kfree(save_encoders); |
797 | return 0; |
||
798 | |||
1179 | serge | 799 | fail: |
800 | /* Restore all previous data. */ |
||
1123 | serge | 801 | count = 0; |
1179 | serge | 802 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
803 | *encoder = save_encoders[count++]; |
||
1123 | serge | 804 | } |
1179 | serge | 805 | |
1123 | serge | 806 | count = 0; |
807 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1179 | serge | 808 | *connector = save_connectors[count++]; |
1123 | serge | 809 | } |
1179 | serge | 810 | |
3031 | serge | 811 | /* Try to restore the config */ |
812 | if (mode_changed && |
||
813 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
||
814 | save_set.y, save_set.fb)) |
||
815 | DRM_ERROR("failed to restore config after modeset failure\n"); |
||
816 | |||
1179 | serge | 817 | kfree(save_connectors); |
1123 | serge | 818 | kfree(save_encoders); |
819 | return ret; |
||
820 | } |
||
821 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
||
822 | |||
823 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
||
824 | { |
||
825 | int dpms = DRM_MODE_DPMS_OFF; |
||
826 | struct drm_connector *connector; |
||
827 | struct drm_device *dev = encoder->dev; |
||
828 | |||
829 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
830 | if (connector->encoder == encoder) |
||
831 | if (connector->dpms < dpms) |
||
832 | dpms = connector->dpms; |
||
833 | return dpms; |
||
834 | } |
||
835 | |||
4104 | Serge | 836 | /* Helper which handles bridge ordering around encoder dpms */ |
837 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) |
||
838 | { |
||
839 | struct drm_bridge *bridge = encoder->bridge; |
||
840 | struct drm_encoder_helper_funcs *encoder_funcs; |
||
841 | |||
842 | if (bridge) { |
||
843 | if (mode == DRM_MODE_DPMS_ON) |
||
844 | bridge->funcs->pre_enable(bridge); |
||
845 | else |
||
846 | bridge->funcs->disable(bridge); |
||
847 | } |
||
848 | |||
849 | encoder_funcs = encoder->helper_private; |
||
850 | if (encoder_funcs->dpms) |
||
851 | encoder_funcs->dpms(encoder, mode); |
||
852 | |||
853 | if (bridge) { |
||
854 | if (mode == DRM_MODE_DPMS_ON) |
||
855 | bridge->funcs->enable(bridge); |
||
856 | else |
||
857 | bridge->funcs->post_disable(bridge); |
||
858 | } |
||
859 | } |
||
860 | |||
1123 | serge | 861 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
862 | { |
||
863 | int dpms = DRM_MODE_DPMS_OFF; |
||
864 | struct drm_connector *connector; |
||
865 | struct drm_device *dev = crtc->dev; |
||
866 | |||
867 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
||
868 | if (connector->encoder && connector->encoder->crtc == crtc) |
||
869 | if (connector->dpms < dpms) |
||
870 | dpms = connector->dpms; |
||
871 | return dpms; |
||
872 | } |
||
873 | |||
874 | /** |
||
3192 | Serge | 875 | * drm_helper_connector_dpms() - connector dpms helper implementation |
876 | * @connector: affected connector |
||
877 | * @mode: DPMS mode |
||
1123 | serge | 878 | * |
3192 | Serge | 879 | * This is the main helper function provided by the crtc helper framework for |
880 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
||
881 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() |
||
882 | * callback provided by the driver appropriately. |
||
1123 | serge | 883 | */ |
884 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
||
885 | { |
||
886 | struct drm_encoder *encoder = connector->encoder; |
||
887 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
||
4104 | Serge | 888 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
1123 | serge | 889 | |
890 | if (mode == connector->dpms) |
||
891 | return; |
||
892 | |||
893 | old_dpms = connector->dpms; |
||
894 | connector->dpms = mode; |
||
895 | |||
4104 | Serge | 896 | if (encoder) |
897 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); |
||
898 | |||
1123 | serge | 899 | /* from off to on, do crtc then encoder */ |
900 | if (mode < old_dpms) { |
||
901 | if (crtc) { |
||
902 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
903 | if (crtc_funcs->dpms) |
||
904 | (*crtc_funcs->dpms) (crtc, |
||
905 | drm_helper_choose_crtc_dpms(crtc)); |
||
906 | } |
||
4104 | Serge | 907 | if (encoder) |
908 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
||
1123 | serge | 909 | } |
910 | |||
911 | /* from on to off, do encoder then crtc */ |
||
912 | if (mode > old_dpms) { |
||
4104 | Serge | 913 | if (encoder) |
914 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
||
1123 | serge | 915 | if (crtc) { |
916 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
||
917 | if (crtc_funcs->dpms) |
||
918 | (*crtc_funcs->dpms) (crtc, |
||
919 | drm_helper_choose_crtc_dpms(crtc)); |
||
920 | } |
||
921 | } |
||
922 | |||
923 | return; |
||
924 | } |
||
925 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
||
926 | |||
927 | int drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
||
3031 | serge | 928 | struct drm_mode_fb_cmd2 *mode_cmd) |
1123 | serge | 929 | { |
3031 | serge | 930 | int i; |
931 | |||
1123 | serge | 932 | fb->width = mode_cmd->width; |
933 | fb->height = mode_cmd->height; |
||
3031 | serge | 934 | for (i = 0; i < 4; i++) { |
935 | fb->pitches[i] = mode_cmd->pitches[i]; |
||
936 | fb->offsets[i] = mode_cmd->offsets[i]; |
||
937 | } |
||
938 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
||
939 | &fb->bits_per_pixel); |
||
940 | fb->pixel_format = mode_cmd->pixel_format; |
||
1123 | serge | 941 | |
942 | return 0; |
||
943 | } |
||
944 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
||
945 | |||
946 | int drm_helper_resume_force_mode(struct drm_device *dev) |
||
947 | { |
||
948 | struct drm_crtc *crtc; |
||
1404 | serge | 949 | struct drm_encoder *encoder; |
950 | struct drm_crtc_helper_funcs *crtc_funcs; |
||
4104 | Serge | 951 | int ret, encoder_dpms; |
1123 | serge | 952 | |
953 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
||
954 | |||
1179 | serge | 955 | if (!crtc->enabled) |
956 | continue; |
||
1123 | serge | 957 | |
1179 | serge | 958 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
1123 | serge | 959 | crtc->x, crtc->y, crtc->fb); |
960 | |||
961 | if (ret == false) |
||
962 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
||
1404 | serge | 963 | |
964 | /* Turn off outputs that were already powered off */ |
||
965 | if (drm_helper_choose_crtc_dpms(crtc)) { |
||
966 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
||
967 | |||
968 | if(encoder->crtc != crtc) |
||
969 | continue; |
||
970 | |||
4104 | Serge | 971 | encoder_dpms = drm_helper_choose_encoder_dpms( |
972 | encoder); |
||
973 | |||
974 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
||
1963 | serge | 975 | } |
1404 | serge | 976 | |
977 | crtc_funcs = crtc->helper_private; |
||
978 | if (crtc_funcs->dpms) |
||
979 | (*crtc_funcs->dpms) (crtc, |
||
980 | drm_helper_choose_crtc_dpms(crtc)); |
||
981 | } |
||
982 | } |
||
1179 | serge | 983 | /* disable the unused connectors while restoring the modesetting */ |
984 | drm_helper_disable_unused_functions(dev); |
||
1123 | serge | 985 | return 0; |
986 | } |
||
987 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
||
1963 | serge | 988 | |
3480 | Serge | 989 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
990 | { |
||
991 | /* send a uevent + call fbdev */ |
||
992 | if (dev->mode_config.funcs->output_poll_changed) |
||
993 | dev->mode_config.funcs->output_poll_changed(dev); |
||
994 | } |
||
995 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); |
||
1963 | serge | 996 | |
997 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
||
998 | static void output_poll_execute(struct work_struct *work) |
||
999 | { |
||
1000 | struct delayed_work *delayed_work = to_delayed_work(work); |
||
1001 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); |
||
1002 | struct drm_connector *connector; |
||
1003 | enum drm_connector_status old_status; |
||
1004 | bool repoll = false, changed = false; |
||
1005 | |||
1006 | if (!drm_kms_helper_poll) |
||
1007 | return; |
||
1008 | |||
1009 | mutex_lock(&dev->mode_config.mutex); |
||
1010 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1011 | |||
3192 | Serge | 1012 | /* Ignore forced connectors. */ |
1013 | if (connector->force) |
||
1963 | serge | 1014 | continue; |
1015 | |||
3192 | Serge | 1016 | /* Ignore HPD capable connectors and connectors where we don't |
1017 | * want any hotplug detection at all for polling. */ |
||
1018 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) |
||
1019 | continue; |
||
1020 | |||
1963 | serge | 1021 | repoll = true; |
1022 | |||
1023 | old_status = connector->status; |
||
1024 | /* if we are connected and don't want to poll for disconnect |
||
1025 | skip it */ |
||
1026 | if (old_status == connector_status_connected && |
||
3192 | Serge | 1027 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
1963 | serge | 1028 | continue; |
1029 | |||
1030 | connector->status = connector->funcs->detect(connector, false); |
||
3764 | Serge | 1031 | if (old_status != connector->status) { |
1032 | const char *old, *new; |
||
1033 | |||
1034 | old = drm_get_connector_status_name(old_status); |
||
1035 | new = drm_get_connector_status_name(connector->status); |
||
1036 | |||
1037 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " |
||
1038 | "status updated from %s to %s\n", |
||
1963 | serge | 1039 | connector->base.id, |
1040 | drm_get_connector_name(connector), |
||
3764 | Serge | 1041 | old, new); |
1042 | |||
1963 | serge | 1043 | changed = true; |
1044 | } |
||
3764 | Serge | 1045 | } |
1963 | serge | 1046 | |
1047 | mutex_unlock(&dev->mode_config.mutex); |
||
1048 | |||
3192 | Serge | 1049 | if (changed) |
1050 | drm_kms_helper_hotplug_event(dev); |
||
1963 | serge | 1051 | |
4126 | Serge | 1052 | if (repoll) |
1053 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
||
1963 | serge | 1054 | } |
1055 | |||
1056 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
||
1057 | { |
||
1058 | if (!dev->mode_config.poll_enabled) |
||
1059 | return; |
||
3480 | Serge | 1060 | // cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
1963 | serge | 1061 | } |
1062 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); |
||
1063 | |||
1064 | void drm_kms_helper_poll_enable(struct drm_device *dev) |
||
1065 | { |
||
1066 | bool poll = false; |
||
1067 | struct drm_connector *connector; |
||
1068 | |||
1069 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
||
1070 | return; |
||
1071 | |||
1072 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
3192 | Serge | 1073 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
1074 | DRM_CONNECTOR_POLL_DISCONNECT)) |
||
1963 | serge | 1075 | poll = true; |
1076 | } |
||
1077 | |||
4126 | Serge | 1078 | if (poll) |
1079 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
||
1963 | serge | 1080 | } |
1081 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
||
1082 | |||
1083 | void drm_kms_helper_poll_init(struct drm_device *dev) |
||
1084 | { |
||
1085 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
||
1086 | dev->mode_config.poll_enabled = true; |
||
1087 | |||
1088 | drm_kms_helper_poll_enable(dev); |
||
1089 | } |
||
1090 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
||
1091 | |||
1092 | void drm_kms_helper_poll_fini(struct drm_device *dev) |
||
1093 | { |
||
1094 | drm_kms_helper_poll_disable(dev); |
||
1095 | } |
||
1096 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); |
||
1097 | |||
4560 | Serge | 1098 | bool drm_helper_hpd_irq_event(struct drm_device *dev) |
1963 | serge | 1099 | { |
3192 | Serge | 1100 | struct drm_connector *connector; |
1101 | enum drm_connector_status old_status; |
||
1102 | bool changed = false; |
||
1103 | |||
1963 | serge | 1104 | if (!dev->mode_config.poll_enabled) |
4560 | Serge | 1105 | return false; |
1963 | serge | 1106 | |
3192 | Serge | 1107 | mutex_lock(&dev->mode_config.mutex); |
1108 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
||
1109 | |||
1110 | /* Only handle HPD capable connectors. */ |
||
1111 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) |
||
1112 | continue; |
||
1113 | |||
1114 | old_status = connector->status; |
||
1115 | |||
1116 | connector->status = connector->funcs->detect(connector, false); |
||
3764 | Serge | 1117 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
3192 | Serge | 1118 | connector->base.id, |
1119 | drm_get_connector_name(connector), |
||
3764 | Serge | 1120 | drm_get_connector_status_name(old_status), |
1121 | drm_get_connector_status_name(connector->status)); |
||
3192 | Serge | 1122 | if (old_status != connector->status) |
1123 | changed = true; |
||
1124 | } |
||
1125 | |||
1126 | mutex_unlock(&dev->mode_config.mutex); |
||
1127 | |||
1128 | if (changed) |
||
1129 | drm_kms_helper_hotplug_event(dev); |
||
4560 | Serge | 1130 | |
1131 | return changed; |
||
1963 | serge | 1132 | } |
1133 | EXPORT_SYMBOL(drm_helper_hpd_irq_event);>>>>>>> |