Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006-2008 Intel Corporation |
| 3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> |
| 4 | * |
| 5 | * DRM core CRTC related functions |
| 6 | * |
| 7 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 8 | * documentation for any purpose is hereby granted without fee, provided that |
| 9 | * the above copyright notice appear in all copies and that both that copyright |
| 10 | * notice and this permission notice appear in supporting documentation, and |
| 11 | * that the name of the copyright holders not be used in advertising or |
| 12 | * publicity pertaining to distribution of the software without specific, |
| 13 | * written prior permission. The copyright holders make no representations |
| 14 | * about the suitability of this software for any purpose. It is provided "as |
| 15 | * is" without express or implied warranty. |
| 16 | * |
| 17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 23 | * OF THIS SOFTWARE. |
| 24 | * |
| 25 | * Authors: |
| 26 | * Keith Packard |
| 27 | * Eric Anholt <eric@anholt.net> |
| 28 | * Dave Airlie <airlied@linux.ie> |
| 29 | * Jesse Barnes <jesse.barnes@intel.com> |
| 30 | */ |
| 31 | |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 32 | #include <linux/export.h> |
Paul Gortmaker | 0603ba1 | 2011-08-31 11:29:09 -0400 | [diff] [blame] | 33 | #include <linux/moduleparam.h> |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 34 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 35 | #include <drm/drmP.h> |
| 36 | #include <drm/drm_crtc.h> |
| 37 | #include <drm/drm_fourcc.h> |
| 38 | #include <drm/drm_crtc_helper.h> |
| 39 | #include <drm/drm_fb_helper.h> |
| 40 | #include <drm/drm_edid.h> |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 41 | |
Daniel Vetter | 92b6f89 | 2013-10-08 17:44:47 +0200 | [diff] [blame] | 42 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
| 43 | MODULE_DESCRIPTION("DRM KMS helper"); |
| 44 | MODULE_LICENSE("GPL and additional rights"); |
| 45 | |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 46 | /** |
| 47 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the |
| 48 | * connector list |
| 49 | * @dev: drm device to operate on |
| 50 | * |
| 51 | * Some userspace presumes that the first connected connector is the main |
| 52 | * display, where it's supposed to display e.g. the login screen. For |
| 53 | * laptops, this should be the main panel. Use this function to sort all |
| 54 | * (eDP/LVDS) panels to the front of the connector list, instead of |
| 55 | * painstakingly trying to initialize them in the right order. |
| 56 | */ |
Daniel Vetter | cfc1a06 | 2012-10-27 15:52:04 +0200 | [diff] [blame] | 57 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
| 58 | { |
| 59 | struct drm_connector *connector, *tmp; |
| 60 | struct list_head panel_list; |
| 61 | |
| 62 | INIT_LIST_HEAD(&panel_list); |
| 63 | |
| 64 | list_for_each_entry_safe(connector, tmp, |
| 65 | &dev->mode_config.connector_list, head) { |
| 66 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || |
| 67 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
| 68 | list_move_tail(&connector->head, &panel_list); |
| 69 | } |
| 70 | |
| 71 | list_splice(&panel_list, &dev->mode_config.connector_list); |
| 72 | } |
| 73 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); |
| 74 | |
Chris Wilson | e58f637 | 2010-08-20 09:13:36 +0100 | [diff] [blame] | 75 | static bool drm_kms_helper_poll = true; |
| 76 | module_param_named(poll, drm_kms_helper_poll, bool, 0600); |
| 77 | |
yakui_zhao | 6714977 | 2009-04-02 11:52:12 +0800 | [diff] [blame] | 78 | static void drm_mode_validate_flag(struct drm_connector *connector, |
| 79 | int flags) |
| 80 | { |
Sascha Hauer | a1178ca | 2012-02-01 11:38:30 +0100 | [diff] [blame] | 81 | struct drm_display_mode *mode; |
yakui_zhao | 6714977 | 2009-04-02 11:52:12 +0800 | [diff] [blame] | 82 | |
Damien Lespiau | 560a067 | 2013-09-25 16:45:29 +0100 | [diff] [blame] | 83 | if (flags == (DRM_MODE_FLAG_DBLSCAN | DRM_MODE_FLAG_INTERLACE | |
| 84 | DRM_MODE_FLAG_3D_MASK)) |
yakui_zhao | 6714977 | 2009-04-02 11:52:12 +0800 | [diff] [blame] | 85 | return; |
| 86 | |
Sascha Hauer | a1178ca | 2012-02-01 11:38:30 +0100 | [diff] [blame] | 87 | list_for_each_entry(mode, &connector->modes, head) { |
yakui_zhao | 6714977 | 2009-04-02 11:52:12 +0800 | [diff] [blame] | 88 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) && |
| 89 | !(flags & DRM_MODE_FLAG_INTERLACE)) |
| 90 | mode->status = MODE_NO_INTERLACE; |
| 91 | if ((mode->flags & DRM_MODE_FLAG_DBLSCAN) && |
| 92 | !(flags & DRM_MODE_FLAG_DBLSCAN)) |
| 93 | mode->status = MODE_NO_DBLESCAN; |
Damien Lespiau | 560a067 | 2013-09-25 16:45:29 +0100 | [diff] [blame] | 94 | if ((mode->flags & DRM_MODE_FLAG_3D_MASK) && |
| 95 | !(flags & DRM_MODE_FLAG_3D_MASK)) |
| 96 | mode->status = MODE_NO_STEREO; |
yakui_zhao | 6714977 | 2009-04-02 11:52:12 +0800 | [diff] [blame] | 97 | } |
| 98 | |
| 99 | return; |
| 100 | } |
| 101 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 102 | /** |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 103 | * drm_helper_probe_single_connector_modes - get complete set of display modes |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 104 | * @connector: connector to probe |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 105 | * @maxX: max width for modes |
| 106 | * @maxY: max height for modes |
| 107 | * |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 108 | * Based on the helper callbacks implemented by @connector try to detect all |
| 109 | * valid modes. Modes will first be added to the connector's probed_modes list, |
| 110 | * then culled (based on validity and the @maxX, @maxY parameters) and put into |
| 111 | * the normal modes list. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 112 | * |
Lespiau, Damien | 1eee814 | 2013-09-23 14:48:09 +0100 | [diff] [blame] | 113 | * Intended to be use as a generic implementation of the ->fill_modes() |
| 114 | * @connector vfunc for drivers that use the crtc helpers for output mode |
| 115 | * filtering and detection. |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 116 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 117 | * Returns: |
| 118 | * The number of modes found on @connector. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 119 | */ |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 120 | int drm_helper_probe_single_connector_modes(struct drm_connector *connector, |
| 121 | uint32_t maxX, uint32_t maxY) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 122 | { |
| 123 | struct drm_device *dev = connector->dev; |
Sascha Hauer | a1178ca | 2012-02-01 11:38:30 +0100 | [diff] [blame] | 124 | struct drm_display_mode *mode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 125 | struct drm_connector_helper_funcs *connector_funcs = |
| 126 | connector->helper_private; |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 127 | int count = 0; |
yakui_zhao | 6714977 | 2009-04-02 11:52:12 +0800 | [diff] [blame] | 128 | int mode_flags = 0; |
Damien Lespiau | ebbd97a | 2013-05-08 17:03:32 +0100 | [diff] [blame] | 129 | bool verbose_prune = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 130 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 131 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
| 132 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 133 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, |
| 134 | drm_get_connector_name(connector)); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 135 | /* set all modes to the unverified state */ |
Sascha Hauer | a1178ca | 2012-02-01 11:38:30 +0100 | [diff] [blame] | 136 | list_for_each_entry(mode, &connector->modes, head) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 137 | mode->status = MODE_UNVERIFIED; |
| 138 | |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 139 | if (connector->force) { |
| 140 | if (connector->force == DRM_FORCE_ON) |
| 141 | connector->status = connector_status_connected; |
| 142 | else |
| 143 | connector->status = connector_status_disconnected; |
| 144 | if (connector->funcs->force) |
| 145 | connector->funcs->force(connector); |
Chris Wilson | e58f637 | 2010-08-20 09:13:36 +0100 | [diff] [blame] | 146 | } else { |
Chris Wilson | 930a9e2 | 2010-09-14 11:07:23 +0100 | [diff] [blame] | 147 | connector->status = connector->funcs->detect(connector, true); |
Chris Wilson | e58f637 | 2010-08-20 09:13:36 +0100 | [diff] [blame] | 148 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 149 | |
Daniel Vetter | 905bc9f | 2012-10-23 18:23:36 +0000 | [diff] [blame] | 150 | /* Re-enable polling in case the global poll config changed. */ |
| 151 | if (drm_kms_helper_poll != dev->mode_config.poll_running) |
| 152 | drm_kms_helper_poll_enable(dev); |
| 153 | |
| 154 | dev->mode_config.poll_running = drm_kms_helper_poll; |
| 155 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 156 | if (connector->status == connector_status_disconnected) { |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 157 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n", |
| 158 | connector->base.id, drm_get_connector_name(connector)); |
Zhao Yakui | 7253983 | 2010-03-04 08:25:55 +0000 | [diff] [blame] | 159 | drm_mode_connector_update_edid_property(connector, NULL); |
Damien Lespiau | ebbd97a | 2013-05-08 17:03:32 +0100 | [diff] [blame] | 160 | verbose_prune = false; |
Adam Jackson | 620f378 | 2009-09-08 11:51:46 +1000 | [diff] [blame] | 161 | goto prune; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 162 | } |
| 163 | |
Carsten Emde | da0df92 | 2012-03-18 22:37:33 +0100 | [diff] [blame] | 164 | #ifdef CONFIG_DRM_LOAD_EDID_FIRMWARE |
| 165 | count = drm_load_edid_firmware(connector); |
| 166 | if (count == 0) |
| 167 | #endif |
| 168 | count = (*connector_funcs->get_modes)(connector); |
| 169 | |
Chris Wilson | c7ef35a | 2010-09-05 16:55:25 +0100 | [diff] [blame] | 170 | if (count == 0 && connector->status == connector_status_connected) |
Adam Jackson | 9632b41 | 2009-11-23 14:23:07 -0500 | [diff] [blame] | 171 | count = drm_add_modes_noedid(connector, 1024, 768); |
Chris Wilson | c7ef35a | 2010-09-05 16:55:25 +0100 | [diff] [blame] | 172 | if (count == 0) |
| 173 | goto prune; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 174 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 175 | drm_mode_connector_list_update(connector); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 176 | |
| 177 | if (maxX && maxY) |
Daniel Vetter | 3e70292 | 2014-01-23 16:39:31 +0100 | [diff] [blame] | 178 | drm_mode_validate_size(dev, &connector->modes, maxX, maxY); |
yakui_zhao | 6714977 | 2009-04-02 11:52:12 +0800 | [diff] [blame] | 179 | |
| 180 | if (connector->interlace_allowed) |
| 181 | mode_flags |= DRM_MODE_FLAG_INTERLACE; |
| 182 | if (connector->doublescan_allowed) |
| 183 | mode_flags |= DRM_MODE_FLAG_DBLSCAN; |
Damien Lespiau | 560a067 | 2013-09-25 16:45:29 +0100 | [diff] [blame] | 184 | if (connector->stereo_allowed) |
| 185 | mode_flags |= DRM_MODE_FLAG_3D_MASK; |
yakui_zhao | 6714977 | 2009-04-02 11:52:12 +0800 | [diff] [blame] | 186 | drm_mode_validate_flag(connector, mode_flags); |
| 187 | |
Sascha Hauer | a1178ca | 2012-02-01 11:38:30 +0100 | [diff] [blame] | 188 | list_for_each_entry(mode, &connector->modes, head) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 189 | if (mode->status == MODE_OK) |
| 190 | mode->status = connector_funcs->mode_valid(connector, |
| 191 | mode); |
| 192 | } |
| 193 | |
Adam Jackson | 620f378 | 2009-09-08 11:51:46 +1000 | [diff] [blame] | 194 | prune: |
Damien Lespiau | ebbd97a | 2013-05-08 17:03:32 +0100 | [diff] [blame] | 195 | drm_mode_prune_invalid(dev, &connector->modes, verbose_prune); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 196 | |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 197 | if (list_empty(&connector->modes)) |
| 198 | return 0; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 199 | |
Ville Syrjälä | 9bc3cd5 | 2013-05-31 12:17:08 +0000 | [diff] [blame] | 200 | list_for_each_entry(mode, &connector->modes, head) |
| 201 | mode->vrefresh = drm_mode_vrefresh(mode); |
| 202 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 203 | drm_mode_sort(&connector->modes); |
| 204 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 205 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] probed modes :\n", connector->base.id, |
| 206 | drm_get_connector_name(connector)); |
Sascha Hauer | a1178ca | 2012-02-01 11:38:30 +0100 | [diff] [blame] | 207 | list_for_each_entry(mode, &connector->modes, head) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 208 | drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V); |
| 209 | drm_mode_debug_printmodeline(mode); |
| 210 | } |
Jesse Barnes | 40a518d | 2009-01-12 12:05:32 -0800 | [diff] [blame] | 211 | |
| 212 | return count; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 213 | } |
| 214 | EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); |
| 215 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 216 | /** |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 217 | * drm_helper_encoder_in_use - check if a given encoder is in use |
| 218 | * @encoder: encoder to check |
| 219 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 220 | * Checks whether @encoder is with the current mode setting output configuration |
| 221 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 222 | * the DPMS state is tracked separately. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 223 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 224 | * Returns: |
| 225 | * True if @encoder is used, false otherwise. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 226 | */ |
| 227 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
| 228 | { |
| 229 | struct drm_connector *connector; |
| 230 | struct drm_device *dev = encoder->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 231 | |
| 232 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 233 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 234 | if (connector->encoder == encoder) |
| 235 | return true; |
| 236 | return false; |
| 237 | } |
| 238 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
| 239 | |
| 240 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 241 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
| 242 | * @crtc: CRTC to check |
| 243 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 244 | * Checks whether @crtc is with the current mode setting output configuration |
| 245 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 246 | * the DPMS state is tracked separately. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 247 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 248 | * Returns: |
| 249 | * True if @crtc is used, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 250 | */ |
| 251 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
| 252 | { |
| 253 | struct drm_encoder *encoder; |
| 254 | struct drm_device *dev = crtc->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 255 | |
| 256 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 257 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 258 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 259 | return true; |
| 260 | return false; |
| 261 | } |
| 262 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
| 263 | |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 264 | static void |
| 265 | drm_encoder_disable(struct drm_encoder *encoder) |
| 266 | { |
| 267 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
| 268 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 269 | if (encoder->bridge) |
| 270 | encoder->bridge->funcs->disable(encoder->bridge); |
| 271 | |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 272 | if (encoder_funcs->disable) |
| 273 | (*encoder_funcs->disable)(encoder); |
| 274 | else |
| 275 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 276 | |
| 277 | if (encoder->bridge) |
| 278 | encoder->bridge->funcs->post_disable(encoder->bridge); |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 279 | } |
| 280 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 281 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 282 | { |
| 283 | struct drm_encoder *encoder; |
Dave Airlie | a3a0544 | 2009-08-31 15:16:30 +1000 | [diff] [blame] | 284 | struct drm_connector *connector; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 285 | struct drm_crtc *crtc; |
| 286 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 287 | drm_warn_on_modeset_not_all_locked(dev); |
| 288 | |
Dave Airlie | a3a0544 | 2009-08-31 15:16:30 +1000 | [diff] [blame] | 289 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 290 | if (!connector->encoder) |
| 291 | continue; |
| 292 | if (connector->status == connector_status_disconnected) |
| 293 | connector->encoder = NULL; |
| 294 | } |
| 295 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 296 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
Dave Airlie | 92971021 | 2010-12-21 12:47:56 +1000 | [diff] [blame] | 297 | if (!drm_helper_encoder_in_use(encoder)) { |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 298 | drm_encoder_disable(encoder); |
Dave Airlie | 9c552dd | 2009-09-02 14:00:11 +1000 | [diff] [blame] | 299 | /* disconnector encoder from any connector */ |
| 300 | encoder->crtc = NULL; |
Dave Airlie | a3a0544 | 2009-08-31 15:16:30 +1000 | [diff] [blame] | 301 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 305 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 306 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 307 | if (!crtc->enabled) { |
Alex Deucher | 5c8d717 | 2010-06-11 17:04:35 -0400 | [diff] [blame] | 308 | if (crtc_funcs->disable) |
| 309 | (*crtc_funcs->disable)(crtc); |
| 310 | else |
| 311 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 312 | crtc->fb = NULL; |
| 313 | } |
| 314 | } |
| 315 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 316 | |
| 317 | /** |
| 318 | * drm_helper_disable_unused_functions - disable unused objects |
| 319 | * @dev: DRM device |
| 320 | * |
| 321 | * This function walks through the entire mode setting configuration of @dev. It |
| 322 | * will remove any crtc links of unused encoders and encoder links of |
| 323 | * disconnected connectors. Then it will disable all unused encoders and crtcs |
| 324 | * either by calling their disable callback if available or by calling their |
| 325 | * dpms callback with DRM_MODE_DPMS_OFF. |
| 326 | */ |
| 327 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
| 328 | { |
| 329 | drm_modeset_lock_all(dev); |
| 330 | __drm_helper_disable_unused_functions(dev); |
| 331 | drm_modeset_unlock_all(dev); |
| 332 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 333 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
| 334 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 335 | /* |
| 336 | * Check the CRTC we're going to map each output to vs. its current |
| 337 | * CRTC. If they don't match, we have to disable the output and the CRTC |
| 338 | * since the driver will have to re-route things. |
| 339 | */ |
| 340 | static void |
| 341 | drm_crtc_prepare_encoders(struct drm_device *dev) |
| 342 | { |
| 343 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 344 | struct drm_encoder *encoder; |
| 345 | |
| 346 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 347 | encoder_funcs = encoder->helper_private; |
| 348 | /* Disable unused encoders */ |
| 349 | if (encoder->crtc == NULL) |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 350 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 351 | /* Disable encoders whose CRTC is about to change */ |
| 352 | if (encoder_funcs->get_crtc && |
| 353 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 354 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 355 | } |
| 356 | } |
| 357 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 358 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 359 | * drm_crtc_helper_set_mode - internal helper to set a mode |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 360 | * @crtc: CRTC to program |
| 361 | * @mode: mode to use |
Alex Deucher | 4c9287c | 2012-11-09 17:26:32 +0000 | [diff] [blame] | 362 | * @x: horizontal offset into the surface |
| 363 | * @y: vertical offset into the surface |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 364 | * @old_fb: old framebuffer, for cleanup |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 365 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 366 | * Try to set @mode on @crtc. Give @crtc and its associated connectors a chance |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 367 | * to fixup or reject the mode prior to trying to set it. This is an internal |
| 368 | * helper that drivers could e.g. use to update properties that require the |
| 369 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
| 370 | * example for changing whether audio is enabled on a hdmi link or for changing |
| 371 | * panel fitter or dither attributes. It is also called by the |
| 372 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
| 373 | * sequence. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 374 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 375 | * Returns: |
| 376 | * True if the mode was set successfully, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 377 | */ |
| 378 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| 379 | struct drm_display_mode *mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 380 | int x, int y, |
| 381 | struct drm_framebuffer *old_fb) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 382 | { |
| 383 | struct drm_device *dev = crtc->dev; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 384 | struct drm_display_mode *adjusted_mode, saved_mode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 385 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 386 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 387 | int saved_x, saved_y; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 388 | bool saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 389 | struct drm_encoder *encoder; |
| 390 | bool ret = true; |
| 391 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 392 | drm_warn_on_modeset_not_all_locked(dev); |
| 393 | |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 394 | saved_enabled = crtc->enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 395 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 396 | if (!crtc->enabled) |
| 397 | return true; |
| 398 | |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 399 | adjusted_mode = drm_mode_duplicate(dev, mode); |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 400 | if (!adjusted_mode) { |
| 401 | crtc->enabled = saved_enabled; |
Ville Syrjälä | 6bfc56a | 2012-03-13 12:35:48 +0200 | [diff] [blame] | 402 | return false; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 403 | } |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 404 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 405 | saved_mode = crtc->mode; |
| 406 | saved_x = crtc->x; |
| 407 | saved_y = crtc->y; |
| 408 | |
| 409 | /* Update crtc values up front so the driver can rely on them for mode |
| 410 | * setting. |
| 411 | */ |
| 412 | crtc->mode = *mode; |
| 413 | crtc->x = x; |
| 414 | crtc->y = y; |
| 415 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 416 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
| 417 | * adjust it according to limitations or connector properties, and also |
| 418 | * a chance to reject the mode entirely. |
| 419 | */ |
| 420 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 421 | |
| 422 | if (encoder->crtc != crtc) |
| 423 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 424 | |
| 425 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { |
| 426 | ret = encoder->bridge->funcs->mode_fixup( |
| 427 | encoder->bridge, mode, adjusted_mode); |
| 428 | if (!ret) { |
| 429 | DRM_DEBUG_KMS("Bridge fixup failed\n"); |
| 430 | goto done; |
| 431 | } |
| 432 | } |
| 433 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 434 | encoder_funcs = encoder->helper_private; |
| 435 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
| 436 | adjusted_mode))) { |
Adam Jackson | 836e53d | 2011-10-10 16:21:27 -0400 | [diff] [blame] | 437 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 438 | goto done; |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
Adam Jackson | 836e53d | 2011-10-10 16:21:27 -0400 | [diff] [blame] | 443 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 444 | goto done; |
| 445 | } |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 446 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 447 | |
| 448 | /* Prepare the encoders and CRTCs before setting the mode. */ |
| 449 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 450 | |
| 451 | if (encoder->crtc != crtc) |
| 452 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 453 | |
| 454 | if (encoder->bridge) |
| 455 | encoder->bridge->funcs->disable(encoder->bridge); |
| 456 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 457 | encoder_funcs = encoder->helper_private; |
| 458 | /* Disable the encoders as the first thing we do. */ |
| 459 | encoder_funcs->prepare(encoder); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 460 | |
| 461 | if (encoder->bridge) |
| 462 | encoder->bridge->funcs->post_disable(encoder->bridge); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 463 | } |
| 464 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 465 | drm_crtc_prepare_encoders(dev); |
| 466 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 467 | crtc_funcs->prepare(crtc); |
| 468 | |
| 469 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
| 470 | * on the DPLL. |
| 471 | */ |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 472 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
| 473 | if (!ret) |
| 474 | goto done; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 475 | |
| 476 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 477 | |
| 478 | if (encoder->crtc != crtc) |
| 479 | continue; |
| 480 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 481 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
| 482 | encoder->base.id, drm_get_encoder_name(encoder), |
| 483 | mode->base.id, mode->name); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 484 | encoder_funcs = encoder->helper_private; |
| 485 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 486 | |
| 487 | if (encoder->bridge && encoder->bridge->funcs->mode_set) |
| 488 | encoder->bridge->funcs->mode_set(encoder->bridge, mode, |
| 489 | adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 490 | } |
| 491 | |
| 492 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
| 493 | crtc_funcs->commit(crtc); |
| 494 | |
| 495 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 496 | |
| 497 | if (encoder->crtc != crtc) |
| 498 | continue; |
| 499 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 500 | if (encoder->bridge) |
| 501 | encoder->bridge->funcs->pre_enable(encoder->bridge); |
| 502 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 503 | encoder_funcs = encoder->helper_private; |
| 504 | encoder_funcs->commit(encoder); |
| 505 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 506 | if (encoder->bridge) |
| 507 | encoder->bridge->funcs->enable(encoder->bridge); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 508 | } |
| 509 | |
Mario Kleiner | 27641c3 | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 510 | /* Store real post-adjustment hardware mode. */ |
| 511 | crtc->hwmode = *adjusted_mode; |
| 512 | |
| 513 | /* Calculate and store various constants which |
| 514 | * are later needed by vblank and swap-completion |
| 515 | * timestamping. They are derived from true hwmode. |
| 516 | */ |
Ville Syrjälä | 545cdd5 | 2013-10-26 17:16:30 +0300 | [diff] [blame] | 517 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
Mario Kleiner | 27641c3 | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 518 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 519 | /* FIXME: add subpixel order */ |
| 520 | done: |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 521 | drm_mode_destroy(dev, adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 522 | if (!ret) { |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 523 | crtc->enabled = saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 524 | crtc->mode = saved_mode; |
| 525 | crtc->x = saved_x; |
| 526 | crtc->y = saved_y; |
| 527 | } |
| 528 | |
| 529 | return ret; |
| 530 | } |
| 531 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
| 532 | |
| 533 | |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 534 | static int |
| 535 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
| 536 | { |
| 537 | struct drm_device *dev = crtc->dev; |
| 538 | struct drm_connector *connector; |
| 539 | struct drm_encoder *encoder; |
| 540 | |
| 541 | /* Decouple all encoders and their attached connectors from this crtc */ |
| 542 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 543 | if (encoder->crtc != crtc) |
| 544 | continue; |
| 545 | |
| 546 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 547 | if (connector->encoder != encoder) |
| 548 | continue; |
| 549 | |
| 550 | connector->encoder = NULL; |
Thierry Reding | a6ad623 | 2013-10-02 15:50:06 +0200 | [diff] [blame] | 551 | |
| 552 | /* |
| 553 | * drm_helper_disable_unused_functions() ought to be |
| 554 | * doing this, but since we've decoupled the encoder |
| 555 | * from the connector above, the required connection |
| 556 | * between them is henceforth no longer available. |
| 557 | */ |
| 558 | connector->dpms = DRM_MODE_DPMS_OFF; |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 559 | } |
| 560 | } |
| 561 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 562 | __drm_helper_disable_unused_functions(dev); |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 563 | return 0; |
| 564 | } |
| 565 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 566 | /** |
| 567 | * drm_crtc_helper_set_config - set a new config from userspace |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 568 | * @set: mode set configuration |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 569 | * |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 570 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
| 571 | * from userspace or internally e.g. from the fbdev suppport code) in @set, and |
| 572 | * enable it. This is the main helper functions for drivers that implement |
| 573 | * kernel mode setting with the crtc helper functions and the assorted |
| 574 | * ->prepare(), ->modeset() and ->commit() helper callbacks. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 575 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 576 | * Returns: |
| 577 | * Returns 0 on success, negative errno numbers on failure. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 578 | */ |
| 579 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
| 580 | { |
| 581 | struct drm_device *dev; |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 582 | struct drm_crtc *new_crtc; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 583 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
Jakob Bornecrantz | 4cb72b1 | 2009-08-03 13:43:59 +0100 | [diff] [blame] | 584 | bool mode_changed = false; /* if true do a full mode set */ |
| 585 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 586 | struct drm_connector *save_connectors, *connector; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 587 | int count = 0, ro, fail = 0; |
| 588 | struct drm_crtc_helper_funcs *crtc_funcs; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 589 | struct drm_mode_set save_set; |
Laurent Pinchart | 4a1b071 | 2012-05-17 13:27:21 +0200 | [diff] [blame] | 590 | int ret; |
Keith Packard | bf9dc10 | 2010-11-26 10:45:58 -0800 | [diff] [blame] | 591 | int i; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 592 | |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 593 | DRM_DEBUG_KMS("\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 594 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 595 | BUG_ON(!set); |
| 596 | BUG_ON(!set->crtc); |
| 597 | BUG_ON(!set->crtc->helper_private); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 598 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 599 | /* Enforce sane interface api - has been abused by the fb helper. */ |
| 600 | BUG_ON(!set->mode && set->fb); |
| 601 | BUG_ON(set->fb && set->num_connectors == 0); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 602 | |
| 603 | crtc_funcs = set->crtc->helper_private; |
| 604 | |
Chris Wilson | ede3ff5 | 2011-01-31 11:16:33 +0000 | [diff] [blame] | 605 | if (!set->mode) |
| 606 | set->fb = NULL; |
| 607 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 608 | if (set->fb) { |
| 609 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
| 610 | set->crtc->base.id, set->fb->base.id, |
| 611 | (int)set->num_connectors, set->x, set->y); |
| 612 | } else { |
Chris Wilson | ede3ff5 | 2011-01-31 11:16:33 +0000 | [diff] [blame] | 613 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 614 | return drm_crtc_helper_disable(set->crtc); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 615 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 616 | |
| 617 | dev = set->crtc->dev; |
| 618 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 619 | drm_warn_on_modeset_not_all_locked(dev); |
| 620 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 621 | /* |
| 622 | * Allocate space for the backup of all (non-pointer) encoder and |
| 623 | * connector data. |
| 624 | */ |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 625 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
| 626 | sizeof(struct drm_encoder), GFP_KERNEL); |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 627 | if (!save_encoders) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 628 | return -ENOMEM; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 629 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 630 | save_connectors = kzalloc(dev->mode_config.num_connector * |
| 631 | sizeof(struct drm_connector), GFP_KERNEL); |
| 632 | if (!save_connectors) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 633 | kfree(save_encoders); |
| 634 | return -ENOMEM; |
| 635 | } |
| 636 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 637 | /* |
| 638 | * Copy data. Note that driver private data is not affected. |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 639 | * Should anything bad happen only the expected state is |
| 640 | * restored, not the drivers personal bookkeeping. |
| 641 | */ |
| 642 | count = 0; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 643 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 644 | save_encoders[count++] = *encoder; |
| 645 | } |
| 646 | |
| 647 | count = 0; |
| 648 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 649 | save_connectors[count++] = *connector; |
| 650 | } |
| 651 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 652 | save_set.crtc = set->crtc; |
| 653 | save_set.mode = &set->crtc->mode; |
| 654 | save_set.x = set->crtc->x; |
| 655 | save_set.y = set->crtc->y; |
| 656 | save_set.fb = set->crtc->fb; |
| 657 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 658 | /* We should be able to check here if the fb has the same properties |
| 659 | * and then just flip_or_move it */ |
| 660 | if (set->crtc->fb != set->fb) { |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 661 | /* If we have no fb then treat it as a full mode set */ |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 662 | if (set->crtc->fb == NULL) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 663 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 664 | mode_changed = true; |
Jakob Bornecrantz | 4cb72b1 | 2009-08-03 13:43:59 +0100 | [diff] [blame] | 665 | } else if (set->fb == NULL) { |
| 666 | mode_changed = true; |
Laurent Pinchart | ce83adf | 2013-04-22 01:38:47 +0200 | [diff] [blame] | 667 | } else if (set->fb->pixel_format != |
| 668 | set->crtc->fb->pixel_format) { |
| 669 | mode_changed = true; |
Dave Airlie | 8dff474 | 2010-02-11 14:28:58 +1000 | [diff] [blame] | 670 | } else |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 671 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 672 | } |
| 673 | |
| 674 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 675 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 676 | |
| 677 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 678 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 679 | drm_mode_debug_printmodeline(&set->crtc->mode); |
| 680 | drm_mode_debug_printmodeline(set->mode); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 681 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | /* a) traverse passed in connector list and get encoders for them */ |
| 685 | count = 0; |
| 686 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 687 | struct drm_connector_helper_funcs *connector_funcs = |
| 688 | connector->helper_private; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 689 | new_encoder = connector->encoder; |
| 690 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 691 | if (set->connectors[ro] == connector) { |
| 692 | new_encoder = connector_funcs->best_encoder(connector); |
| 693 | /* if we can't get an encoder for a connector |
| 694 | we are setting now - then fail */ |
| 695 | if (new_encoder == NULL) |
| 696 | /* don't break so fail path works correct */ |
| 697 | fail = 1; |
| 698 | break; |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 699 | |
| 700 | if (connector->dpms != DRM_MODE_DPMS_ON) { |
| 701 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); |
| 702 | mode_changed = true; |
| 703 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 704 | } |
| 705 | } |
| 706 | |
| 707 | if (new_encoder != connector->encoder) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 708 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 709 | mode_changed = true; |
Maarten Maathuis | ff846ab | 2009-08-19 00:56:45 +0200 | [diff] [blame] | 710 | /* If the encoder is reused for another connector, then |
| 711 | * the appropriate crtc will be set later. |
| 712 | */ |
Maarten Maathuis | ff6fdbe | 2009-09-01 03:39:04 +0200 | [diff] [blame] | 713 | if (connector->encoder) |
| 714 | connector->encoder->crtc = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 715 | connector->encoder = new_encoder; |
| 716 | } |
| 717 | } |
| 718 | |
| 719 | if (fail) { |
| 720 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 721 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 722 | } |
| 723 | |
| 724 | count = 0; |
| 725 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 726 | if (!connector->encoder) |
| 727 | continue; |
| 728 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 729 | if (connector->encoder->crtc == set->crtc) |
| 730 | new_crtc = NULL; |
| 731 | else |
| 732 | new_crtc = connector->encoder->crtc; |
| 733 | |
| 734 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 735 | if (set->connectors[ro] == connector) |
| 736 | new_crtc = set->crtc; |
| 737 | } |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 738 | |
| 739 | /* Make sure the new CRTC will work with the encoder */ |
| 740 | if (new_crtc && |
| 741 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
| 742 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 743 | goto fail; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 744 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 745 | if (new_crtc != connector->encoder->crtc) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 746 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 747 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 748 | connector->encoder->crtc = new_crtc; |
| 749 | } |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 750 | if (new_crtc) { |
| 751 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
| 752 | connector->base.id, drm_get_connector_name(connector), |
| 753 | new_crtc->base.id); |
| 754 | } else { |
| 755 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
| 756 | connector->base.id, drm_get_connector_name(connector)); |
| 757 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 758 | } |
| 759 | |
| 760 | /* mode_set_base is not a required function */ |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 761 | if (fb_changed && !crtc_funcs->mode_set_base) |
| 762 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 763 | |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 764 | if (mode_changed) { |
Ilija Hadzic | 48b1f5d | 2013-10-29 11:09:45 -0400 | [diff] [blame] | 765 | if (drm_helper_crtc_in_use(set->crtc)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 766 | DRM_DEBUG_KMS("attempting to set mode from" |
| 767 | " userspace\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 768 | drm_mode_debug_printmodeline(set->mode); |
Chris Wilson | 356ad3c | 2010-09-09 09:41:32 +0100 | [diff] [blame] | 769 | set->crtc->fb = set->fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 770 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 771 | set->x, set->y, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 772 | save_set.fb)) { |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 773 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
| 774 | set->crtc->base.id); |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 775 | set->crtc->fb = save_set.fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 776 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 777 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 778 | } |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 779 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
| 780 | for (i = 0; i < set->num_connectors; i++) { |
| 781 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, |
| 782 | drm_get_connector_name(set->connectors[i])); |
| 783 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
| 784 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 785 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 786 | __drm_helper_disable_unused_functions(dev); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 787 | } else if (fb_changed) { |
Ben Skeggs | 9b1596a | 2009-09-18 10:43:52 +1000 | [diff] [blame] | 788 | set->crtc->x = set->x; |
| 789 | set->crtc->y = set->y; |
Ilija Hadzic | fc50a89 | 2013-10-29 11:09:41 -0400 | [diff] [blame] | 790 | set->crtc->fb = set->fb; |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 791 | ret = crtc_funcs->mode_set_base(set->crtc, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 792 | set->x, set->y, save_set.fb); |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 793 | if (ret != 0) { |
Ilija Hadzic | fbce406 | 2013-10-29 11:09:43 -0400 | [diff] [blame] | 794 | set->crtc->x = save_set.x; |
| 795 | set->crtc->y = save_set.y; |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 796 | set->crtc->fb = save_set.fb; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 797 | goto fail; |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 798 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 799 | } |
| 800 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 801 | kfree(save_connectors); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 802 | kfree(save_encoders); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 803 | return 0; |
| 804 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 805 | fail: |
| 806 | /* Restore all previous data. */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 807 | count = 0; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 808 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 809 | *encoder = save_encoders[count++]; |
Chris Wilson | e62fb64 | 2009-02-11 16:39:21 +0000 | [diff] [blame] | 810 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 811 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 812 | count = 0; |
| 813 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 814 | *connector = save_connectors[count++]; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 815 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 816 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 817 | /* Try to restore the config */ |
| 818 | if (mode_changed && |
| 819 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
| 820 | save_set.y, save_set.fb)) |
| 821 | DRM_ERROR("failed to restore config after modeset failure\n"); |
| 822 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 823 | kfree(save_connectors); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 824 | kfree(save_encoders); |
| 825 | return ret; |
| 826 | } |
| 827 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
| 828 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 829 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
| 830 | { |
| 831 | int dpms = DRM_MODE_DPMS_OFF; |
| 832 | struct drm_connector *connector; |
| 833 | struct drm_device *dev = encoder->dev; |
| 834 | |
| 835 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 836 | if (connector->encoder == encoder) |
| 837 | if (connector->dpms < dpms) |
| 838 | dpms = connector->dpms; |
| 839 | return dpms; |
| 840 | } |
| 841 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 842 | /* Helper which handles bridge ordering around encoder dpms */ |
| 843 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 844 | { |
| 845 | struct drm_bridge *bridge = encoder->bridge; |
| 846 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 847 | |
| 848 | if (bridge) { |
| 849 | if (mode == DRM_MODE_DPMS_ON) |
| 850 | bridge->funcs->pre_enable(bridge); |
| 851 | else |
| 852 | bridge->funcs->disable(bridge); |
| 853 | } |
| 854 | |
| 855 | encoder_funcs = encoder->helper_private; |
| 856 | if (encoder_funcs->dpms) |
| 857 | encoder_funcs->dpms(encoder, mode); |
| 858 | |
| 859 | if (bridge) { |
| 860 | if (mode == DRM_MODE_DPMS_ON) |
| 861 | bridge->funcs->enable(bridge); |
| 862 | else |
| 863 | bridge->funcs->post_disable(bridge); |
| 864 | } |
| 865 | } |
| 866 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 867 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
| 868 | { |
| 869 | int dpms = DRM_MODE_DPMS_OFF; |
| 870 | struct drm_connector *connector; |
| 871 | struct drm_device *dev = crtc->dev; |
| 872 | |
| 873 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 874 | if (connector->encoder && connector->encoder->crtc == crtc) |
| 875 | if (connector->dpms < dpms) |
| 876 | dpms = connector->dpms; |
| 877 | return dpms; |
| 878 | } |
| 879 | |
| 880 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 881 | * drm_helper_connector_dpms() - connector dpms helper implementation |
| 882 | * @connector: affected connector |
| 883 | * @mode: DPMS mode |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 884 | * |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 885 | * This is the main helper function provided by the crtc helper framework for |
| 886 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
| 887 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() |
| 888 | * callback provided by the driver appropriately. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 889 | */ |
| 890 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
| 891 | { |
| 892 | struct drm_encoder *encoder = connector->encoder; |
| 893 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 894 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 895 | |
| 896 | if (mode == connector->dpms) |
| 897 | return; |
| 898 | |
| 899 | old_dpms = connector->dpms; |
| 900 | connector->dpms = mode; |
| 901 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 902 | if (encoder) |
| 903 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); |
| 904 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 905 | /* from off to on, do crtc then encoder */ |
| 906 | if (mode < old_dpms) { |
| 907 | if (crtc) { |
| 908 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 909 | if (crtc_funcs->dpms) |
| 910 | (*crtc_funcs->dpms) (crtc, |
| 911 | drm_helper_choose_crtc_dpms(crtc)); |
| 912 | } |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 913 | if (encoder) |
| 914 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 915 | } |
| 916 | |
| 917 | /* from on to off, do encoder then crtc */ |
| 918 | if (mode > old_dpms) { |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 919 | if (encoder) |
| 920 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 921 | if (crtc) { |
| 922 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 923 | if (crtc_funcs->dpms) |
| 924 | (*crtc_funcs->dpms) (crtc, |
| 925 | drm_helper_choose_crtc_dpms(crtc)); |
| 926 | } |
| 927 | } |
| 928 | |
| 929 | return; |
| 930 | } |
| 931 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
| 932 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 933 | /** |
| 934 | * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata |
| 935 | * @fb: drm_framebuffer object to fill out |
| 936 | * @mode_cmd: metadata from the userspace fb creation request |
| 937 | * |
| 938 | * This helper can be used in a drivers fb_create callback to pre-fill the fb's |
| 939 | * metadata fields. |
| 940 | */ |
Daniel Vetter | 9fd9378 | 2014-01-23 22:16:24 +0100 | [diff] [blame] | 941 | void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
| 942 | struct drm_mode_fb_cmd2 *mode_cmd) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 943 | { |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 944 | int i; |
| 945 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 946 | fb->width = mode_cmd->width; |
| 947 | fb->height = mode_cmd->height; |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 948 | for (i = 0; i < 4; i++) { |
| 949 | fb->pitches[i] = mode_cmd->pitches[i]; |
| 950 | fb->offsets[i] = mode_cmd->offsets[i]; |
| 951 | } |
Dave Airlie | 248dbc2 | 2011-11-29 20:02:54 +0000 | [diff] [blame] | 952 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
Jesse Barnes | 308e5bc | 2011-11-14 14:51:28 -0800 | [diff] [blame] | 953 | &fb->bits_per_pixel); |
| 954 | fb->pixel_format = mode_cmd->pixel_format; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 955 | } |
| 956 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
| 957 | |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 958 | /** |
| 959 | * drm_helper_resume_force_mode - force-restore mode setting configuration |
| 960 | * @dev: drm_device which should be restored |
| 961 | * |
| 962 | * Drivers which use the mode setting helpers can use this function to |
| 963 | * force-restore the mode setting configuration e.g. on resume or when something |
| 964 | * else might have trampled over the hw state (like some overzealous old BIOSen |
| 965 | * tended to do). |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 966 | * |
| 967 | * This helper doesn't provide a error return value since restoring the old |
| 968 | * config should never fail due to resource allocation issues since the driver |
| 969 | * has successfully set the restored configuration already. Hence this should |
| 970 | * boil down to the equivalent of a few dpms on calls, which also don't provide |
| 971 | * an error code. |
| 972 | * |
| 973 | * Drivers where simply restoring an old configuration again might fail (e.g. |
| 974 | * due to slight differences in allocating shared resources when the |
| 975 | * configuration is restored in a different order than when userspace set it up) |
| 976 | * need to use their own restore logic. |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 977 | */ |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 978 | void drm_helper_resume_force_mode(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 979 | { |
| 980 | struct drm_crtc *crtc; |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 981 | struct drm_encoder *encoder; |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 982 | struct drm_crtc_helper_funcs *crtc_funcs; |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 983 | int encoder_dpms; |
| 984 | bool ret; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 985 | |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame^] | 986 | drm_modeset_lock_all(dev); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 987 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 988 | |
| 989 | if (!crtc->enabled) |
| 990 | continue; |
| 991 | |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 992 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
| 993 | crtc->x, crtc->y, crtc->fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 994 | |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 995 | /* Restoring the old config should never fail! */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 996 | if (ret == false) |
| 997 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 998 | |
| 999 | /* Turn off outputs that were already powered off */ |
| 1000 | if (drm_helper_choose_crtc_dpms(crtc)) { |
| 1001 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 1002 | |
| 1003 | if(encoder->crtc != crtc) |
| 1004 | continue; |
| 1005 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 1006 | encoder_dpms = drm_helper_choose_encoder_dpms( |
| 1007 | encoder); |
| 1008 | |
| 1009 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 1010 | } |
Chris Wilson | 817e631 | 2010-08-06 15:03:31 +0100 | [diff] [blame] | 1011 | |
| 1012 | crtc_funcs = crtc->helper_private; |
| 1013 | if (crtc_funcs->dpms) |
| 1014 | (*crtc_funcs->dpms) (crtc, |
| 1015 | drm_helper_choose_crtc_dpms(crtc)); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 1016 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1017 | } |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 1018 | |
Zhao Yakui | af4fcb5 | 2009-07-08 14:13:13 +0800 | [diff] [blame] | 1019 | /* disable the unused connectors while restoring the modesetting */ |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 1020 | __drm_helper_disable_unused_functions(dev); |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame^] | 1021 | drm_modeset_unlock_all(dev); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1022 | } |
| 1023 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1024 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 1025 | /** |
| 1026 | * drm_kms_helper_hotplug_event - fire off KMS hotplug events |
| 1027 | * @dev: drm_device whose connector state changed |
| 1028 | * |
| 1029 | * This function fires off the uevent for userspace and also calls the |
| 1030 | * output_poll_changed function, which is most commonly used to inform the fbdev |
| 1031 | * emulation code and allow it to update the fbcon output configuration. |
| 1032 | * |
| 1033 | * Drivers should call this from their hotplug handling code when a change is |
| 1034 | * detected. Note that this function does not do any output detection of its |
| 1035 | * own, like drm_helper_hpd_irq_event() does - this is assumed to be done by the |
| 1036 | * driver already. |
| 1037 | * |
| 1038 | * This function must be called from process context with no mode |
| 1039 | * setting locks held. |
| 1040 | */ |
Daniel Vetter | 3d3683f | 2012-10-23 18:23:32 +0000 | [diff] [blame] | 1041 | void drm_kms_helper_hotplug_event(struct drm_device *dev) |
| 1042 | { |
| 1043 | /* send a uevent + call fbdev */ |
| 1044 | drm_sysfs_hotplug_event(dev); |
| 1045 | if (dev->mode_config.funcs->output_poll_changed) |
| 1046 | dev->mode_config.funcs->output_poll_changed(dev); |
| 1047 | } |
| 1048 | EXPORT_SYMBOL(drm_kms_helper_hotplug_event); |
| 1049 | |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1050 | #define DRM_OUTPUT_POLL_PERIOD (10*HZ) |
Tejun Heo | 991ea75 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 1051 | static void output_poll_execute(struct work_struct *work) |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1052 | { |
Tejun Heo | 991ea75 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 1053 | struct delayed_work *delayed_work = to_delayed_work(work); |
| 1054 | struct drm_device *dev = container_of(delayed_work, struct drm_device, mode_config.output_poll_work); |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1055 | struct drm_connector *connector; |
Keith Packard | c5027de | 2010-11-26 10:45:59 -0800 | [diff] [blame] | 1056 | enum drm_connector_status old_status; |
Dave Airlie | d482e5f | 2013-06-28 20:31:34 +1000 | [diff] [blame] | 1057 | bool repoll = false, changed = false; |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1058 | |
Chris Wilson | e58f637 | 2010-08-20 09:13:36 +0100 | [diff] [blame] | 1059 | if (!drm_kms_helper_poll) |
| 1060 | return; |
| 1061 | |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1062 | mutex_lock(&dev->mode_config.mutex); |
| 1063 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 1064 | |
Daniel Vetter | 11e6868 | 2012-10-23 18:23:38 +0000 | [diff] [blame] | 1065 | /* Ignore forced connectors. */ |
| 1066 | if (connector->force) |
| 1067 | continue; |
| 1068 | |
Daniel Vetter | 816da85 | 2012-10-23 18:23:33 +0000 | [diff] [blame] | 1069 | /* Ignore HPD capable connectors and connectors where we don't |
| 1070 | * want any hotplug detection at all for polling. */ |
| 1071 | if (!connector->polled || connector->polled == DRM_CONNECTOR_POLL_HPD) |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1072 | continue; |
| 1073 | |
Daniel Vetter | a4f968d | 2012-10-24 13:35:50 +0000 | [diff] [blame] | 1074 | repoll = true; |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1075 | |
| 1076 | old_status = connector->status; |
| 1077 | /* if we are connected and don't want to poll for disconnect |
| 1078 | skip it */ |
| 1079 | if (old_status == connector_status_connected && |
Daniel Vetter | 816da85 | 2012-10-23 18:23:33 +0000 | [diff] [blame] | 1080 | !(connector->polled & DRM_CONNECTOR_POLL_DISCONNECT)) |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1081 | continue; |
| 1082 | |
Keith Packard | c5027de | 2010-11-26 10:45:59 -0800 | [diff] [blame] | 1083 | connector->status = connector->funcs->detect(connector, false); |
Lespiau, Damien | b2dfcae | 2013-05-10 12:36:44 +0000 | [diff] [blame] | 1084 | if (old_status != connector->status) { |
| 1085 | const char *old, *new; |
| 1086 | |
| 1087 | old = drm_get_connector_status_name(old_status); |
| 1088 | new = drm_get_connector_status_name(connector->status); |
| 1089 | |
| 1090 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] " |
| 1091 | "status updated from %s to %s\n", |
| 1092 | connector->base.id, |
| 1093 | drm_get_connector_name(connector), |
| 1094 | old, new); |
| 1095 | |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1096 | changed = true; |
Lespiau, Damien | b2dfcae | 2013-05-10 12:36:44 +0000 | [diff] [blame] | 1097 | } |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1098 | } |
| 1099 | |
| 1100 | mutex_unlock(&dev->mode_config.mutex); |
| 1101 | |
Daniel Vetter | 3d3683f | 2012-10-23 18:23:32 +0000 | [diff] [blame] | 1102 | if (changed) |
| 1103 | drm_kms_helper_hotplug_event(dev); |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1104 | |
Tejun Heo | 9a919c4 | 2010-08-09 12:01:27 +0200 | [diff] [blame] | 1105 | if (repoll) |
Tejun Heo | 3b07e9c | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 1106 | schedule_delayed_work(delayed_work, DRM_OUTPUT_POLL_PERIOD); |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1107 | } |
| 1108 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 1109 | /** |
| 1110 | * drm_kms_helper_poll_disable - disable output polling |
| 1111 | * @dev: drm_device |
| 1112 | * |
| 1113 | * This function disables the output polling work. |
| 1114 | * |
| 1115 | * Drivers can call this helper from their device suspend implementation. It is |
| 1116 | * not an error to call this even when output polling isn't enabled or arlready |
| 1117 | * disabled. |
| 1118 | */ |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1119 | void drm_kms_helper_poll_disable(struct drm_device *dev) |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1120 | { |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1121 | if (!dev->mode_config.poll_enabled) |
| 1122 | return; |
Tejun Heo | 991ea75 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 1123 | cancel_delayed_work_sync(&dev->mode_config.output_poll_work); |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1124 | } |
| 1125 | EXPORT_SYMBOL(drm_kms_helper_poll_disable); |
| 1126 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 1127 | /** |
| 1128 | * drm_kms_helper_poll_enable - re-enable output polling. |
| 1129 | * @dev: drm_device |
| 1130 | * |
| 1131 | * This function re-enables the output polling work. |
| 1132 | * |
| 1133 | * Drivers can call this helper from their device resume implementation. It is |
| 1134 | * an error to call this when the output polling support has not yet been set |
| 1135 | * up. |
| 1136 | */ |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1137 | void drm_kms_helper_poll_enable(struct drm_device *dev) |
| 1138 | { |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1139 | bool poll = false; |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1140 | struct drm_connector *connector; |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1141 | |
Chris Wilson | e58f637 | 2010-08-20 09:13:36 +0100 | [diff] [blame] | 1142 | if (!dev->mode_config.poll_enabled || !drm_kms_helper_poll) |
| 1143 | return; |
| 1144 | |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1145 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
Daniel Vetter | a4f968d | 2012-10-24 13:35:50 +0000 | [diff] [blame] | 1146 | if (connector->polled & (DRM_CONNECTOR_POLL_CONNECT | |
| 1147 | DRM_CONNECTOR_POLL_DISCONNECT)) |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1148 | poll = true; |
| 1149 | } |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1150 | |
Tejun Heo | 9a919c4 | 2010-08-09 12:01:27 +0200 | [diff] [blame] | 1151 | if (poll) |
Tejun Heo | 3b07e9c | 2012-08-20 14:51:24 -0700 | [diff] [blame] | 1152 | schedule_delayed_work(&dev->mode_config.output_poll_work, DRM_OUTPUT_POLL_PERIOD); |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1153 | } |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1154 | EXPORT_SYMBOL(drm_kms_helper_poll_enable); |
| 1155 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 1156 | /** |
| 1157 | * drm_kms_helper_poll_init - initialize and enable output polling |
| 1158 | * @dev: drm_device |
| 1159 | * |
| 1160 | * This function intializes and then also enables output polling support for |
| 1161 | * @dev. Drivers which do not have reliable hotplug support in hardware can use |
| 1162 | * this helper infrastructure to regularly poll such connectors for changes in |
| 1163 | * their connection state. |
| 1164 | * |
| 1165 | * Drivers can control which connectors are polled by setting the |
| 1166 | * DRM_CONNECTOR_POLL_CONNECT and DRM_CONNECTOR_POLL_DISCONNECT flags. On |
| 1167 | * connectors where probing live outputs can result in visual distortion drivers |
| 1168 | * should not set the DRM_CONNECTOR_POLL_DISCONNECT flag to avoid this. |
| 1169 | * Connectors which have no flag or only DRM_CONNECTOR_POLL_HPD set are |
| 1170 | * completely ignored by the polling logic. |
| 1171 | * |
| 1172 | * Note that a connector can be both polled and probed from the hotplug handler, |
| 1173 | * in case the hotplug interrupt is known to be unreliable. |
| 1174 | */ |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1175 | void drm_kms_helper_poll_init(struct drm_device *dev) |
| 1176 | { |
Tejun Heo | 991ea75 | 2010-07-20 22:09:02 +0200 | [diff] [blame] | 1177 | INIT_DELAYED_WORK(&dev->mode_config.output_poll_work, output_poll_execute); |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1178 | dev->mode_config.poll_enabled = true; |
| 1179 | |
| 1180 | drm_kms_helper_poll_enable(dev); |
| 1181 | } |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1182 | EXPORT_SYMBOL(drm_kms_helper_poll_init); |
| 1183 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 1184 | /** |
| 1185 | * drm_kms_helper_poll_fini - disable output polling and clean it up |
| 1186 | * @dev: drm_device |
| 1187 | */ |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1188 | void drm_kms_helper_poll_fini(struct drm_device *dev) |
| 1189 | { |
Dave Airlie | fbf8176 | 2010-06-01 09:09:06 +1000 | [diff] [blame] | 1190 | drm_kms_helper_poll_disable(dev); |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1191 | } |
| 1192 | EXPORT_SYMBOL(drm_kms_helper_poll_fini); |
| 1193 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 1194 | /** |
| 1195 | * drm_helper_hpd_irq_event - hotplug processing |
| 1196 | * @dev: drm_device |
| 1197 | * |
| 1198 | * Drivers can use this helper function to run a detect cycle on all connectors |
| 1199 | * which have the DRM_CONNECTOR_POLL_HPD flag set in their &polled member. All |
| 1200 | * other connectors are ignored, which is useful to avoid reprobing fixed |
| 1201 | * panels. |
| 1202 | * |
| 1203 | * This helper function is useful for drivers which can't or don't track hotplug |
| 1204 | * interrupts for each connector. |
| 1205 | * |
| 1206 | * Drivers which support hotplug interrupts for each connector individually and |
| 1207 | * which have a more fine-grained detect logic should bypass this code and |
| 1208 | * directly call drm_kms_helper_hotplug_event() in case the connector state |
| 1209 | * changed. |
| 1210 | * |
| 1211 | * This function must be called from process context with no mode |
| 1212 | * setting locks held. |
| 1213 | * |
| 1214 | * Note that a connector can be both polled and probed from the hotplug handler, |
| 1215 | * in case the hotplug interrupt is known to be unreliable. |
| 1216 | */ |
Marc-André Lureau | b8206d3 | 2013-10-18 16:11:28 +0200 | [diff] [blame] | 1217 | bool drm_helper_hpd_irq_event(struct drm_device *dev) |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1218 | { |
Daniel Vetter | 816da85 | 2012-10-23 18:23:33 +0000 | [diff] [blame] | 1219 | struct drm_connector *connector; |
| 1220 | enum drm_connector_status old_status; |
| 1221 | bool changed = false; |
| 1222 | |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1223 | if (!dev->mode_config.poll_enabled) |
Marc-André Lureau | b8206d3 | 2013-10-18 16:11:28 +0200 | [diff] [blame] | 1224 | return false; |
Chris Wilson | e58f637 | 2010-08-20 09:13:36 +0100 | [diff] [blame] | 1225 | |
Daniel Vetter | 816da85 | 2012-10-23 18:23:33 +0000 | [diff] [blame] | 1226 | mutex_lock(&dev->mode_config.mutex); |
| 1227 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 1228 | |
| 1229 | /* Only handle HPD capable connectors. */ |
| 1230 | if (!(connector->polled & DRM_CONNECTOR_POLL_HPD)) |
| 1231 | continue; |
| 1232 | |
| 1233 | old_status = connector->status; |
| 1234 | |
| 1235 | connector->status = connector->funcs->detect(connector, false); |
Lespiau, Damien | ed7951d | 2013-05-10 12:36:42 +0000 | [diff] [blame] | 1236 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] status updated from %s to %s\n", |
Daniel Vetter | 816da85 | 2012-10-23 18:23:33 +0000 | [diff] [blame] | 1237 | connector->base.id, |
| 1238 | drm_get_connector_name(connector), |
Lespiau, Damien | ed7951d | 2013-05-10 12:36:42 +0000 | [diff] [blame] | 1239 | drm_get_connector_status_name(old_status), |
| 1240 | drm_get_connector_status_name(connector->status)); |
Daniel Vetter | 816da85 | 2012-10-23 18:23:33 +0000 | [diff] [blame] | 1241 | if (old_status != connector->status) |
| 1242 | changed = true; |
| 1243 | } |
| 1244 | |
| 1245 | mutex_unlock(&dev->mode_config.mutex); |
| 1246 | |
| 1247 | if (changed) |
| 1248 | drm_kms_helper_hotplug_event(dev); |
Marc-André Lureau | b8206d3 | 2013-10-18 16:11:28 +0200 | [diff] [blame] | 1249 | |
| 1250 | return changed; |
Daniel Vetter | 816da85 | 2012-10-23 18:23:33 +0000 | [diff] [blame] | 1251 | } |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1252 | EXPORT_SYMBOL(drm_helper_hpd_irq_event); |