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 | |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 32 | #include <linux/kernel.h> |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 33 | #include <linux/export.h> |
Paul Gortmaker | 0603ba1 | 2011-08-31 11:29:09 -0400 | [diff] [blame] | 34 | #include <linux/moduleparam.h> |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 35 | |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 36 | #include <drm/drmP.h> |
| 37 | #include <drm/drm_crtc.h> |
| 38 | #include <drm/drm_fourcc.h> |
| 39 | #include <drm/drm_crtc_helper.h> |
| 40 | #include <drm/drm_fb_helper.h> |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame^] | 41 | #include <drm/drm_plane_helper.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 42 | #include <drm/drm_edid.h> |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 43 | |
Daniel Vetter | 92b6f89 | 2013-10-08 17:44:47 +0200 | [diff] [blame] | 44 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
| 45 | MODULE_DESCRIPTION("DRM KMS helper"); |
| 46 | MODULE_LICENSE("GPL and additional rights"); |
| 47 | |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 48 | /** |
| 49 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the |
| 50 | * connector list |
| 51 | * @dev: drm device to operate on |
| 52 | * |
| 53 | * Some userspace presumes that the first connected connector is the main |
| 54 | * display, where it's supposed to display e.g. the login screen. For |
| 55 | * laptops, this should be the main panel. Use this function to sort all |
| 56 | * (eDP/LVDS) panels to the front of the connector list, instead of |
| 57 | * painstakingly trying to initialize them in the right order. |
| 58 | */ |
Daniel Vetter | cfc1a06 | 2012-10-27 15:52:04 +0200 | [diff] [blame] | 59 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
| 60 | { |
| 61 | struct drm_connector *connector, *tmp; |
| 62 | struct list_head panel_list; |
| 63 | |
| 64 | INIT_LIST_HEAD(&panel_list); |
| 65 | |
| 66 | list_for_each_entry_safe(connector, tmp, |
| 67 | &dev->mode_config.connector_list, head) { |
| 68 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || |
| 69 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
| 70 | list_move_tail(&connector->head, &panel_list); |
| 71 | } |
| 72 | |
| 73 | list_splice(&panel_list, &dev->mode_config.connector_list); |
| 74 | } |
| 75 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); |
| 76 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 77 | /** |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 78 | * drm_helper_encoder_in_use - check if a given encoder is in use |
| 79 | * @encoder: encoder to check |
| 80 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 81 | * Checks whether @encoder is with the current mode setting output configuration |
| 82 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 83 | * the DPMS state is tracked separately. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 84 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 85 | * Returns: |
| 86 | * True if @encoder is used, false otherwise. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 87 | */ |
| 88 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
| 89 | { |
| 90 | struct drm_connector *connector; |
| 91 | struct drm_device *dev = encoder->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 92 | |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 93 | /* |
| 94 | * We can expect this mutex to be locked if we are not panicking. |
| 95 | * Locking is currently fubar in the panic handler. |
| 96 | */ |
Dave Airlie | 8d4ad9d | 2014-06-05 20:28:59 +1000 | [diff] [blame] | 97 | if (!oops_in_progress) { |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 98 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
Dave Airlie | 8d4ad9d | 2014-06-05 20:28:59 +1000 | [diff] [blame] | 99 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
| 100 | } |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 101 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 102 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 103 | if (connector->encoder == encoder) |
| 104 | return true; |
| 105 | return false; |
| 106 | } |
| 107 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
| 108 | |
| 109 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 110 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
| 111 | * @crtc: CRTC to check |
| 112 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 113 | * Checks whether @crtc is with the current mode setting output configuration |
| 114 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 115 | * the DPMS state is tracked separately. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 116 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 117 | * Returns: |
| 118 | * True if @crtc is used, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 119 | */ |
| 120 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
| 121 | { |
| 122 | struct drm_encoder *encoder; |
| 123 | struct drm_device *dev = crtc->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 124 | |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 125 | /* |
| 126 | * We can expect this mutex to be locked if we are not panicking. |
| 127 | * Locking is currently fubar in the panic handler. |
| 128 | */ |
| 129 | if (!oops_in_progress) |
| 130 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
| 131 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 132 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 133 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 134 | return true; |
| 135 | return false; |
| 136 | } |
| 137 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
| 138 | |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 139 | static void |
| 140 | drm_encoder_disable(struct drm_encoder *encoder) |
| 141 | { |
| 142 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
| 143 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 144 | if (encoder->bridge) |
| 145 | encoder->bridge->funcs->disable(encoder->bridge); |
| 146 | |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 147 | if (encoder_funcs->disable) |
| 148 | (*encoder_funcs->disable)(encoder); |
| 149 | else |
| 150 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 151 | |
| 152 | if (encoder->bridge) |
| 153 | encoder->bridge->funcs->post_disable(encoder->bridge); |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 154 | } |
| 155 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 156 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 157 | { |
| 158 | struct drm_encoder *encoder; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 159 | struct drm_crtc *crtc; |
| 160 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 161 | drm_warn_on_modeset_not_all_locked(dev); |
| 162 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 163 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
Dave Airlie | 92971021 | 2010-12-21 12:47:56 +1000 | [diff] [blame] | 164 | if (!drm_helper_encoder_in_use(encoder)) { |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 165 | drm_encoder_disable(encoder); |
Rob Clark | b5e6c1d | 2014-05-24 14:30:10 -0400 | [diff] [blame] | 166 | /* disconnect encoder from any connector */ |
Dave Airlie | 9c552dd | 2009-09-02 14:00:11 +1000 | [diff] [blame] | 167 | encoder->crtc = NULL; |
Dave Airlie | a3a0544 | 2009-08-31 15:16:30 +1000 | [diff] [blame] | 168 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 172 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 173 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 174 | if (!crtc->enabled) { |
Alex Deucher | 5c8d717 | 2010-06-11 17:04:35 -0400 | [diff] [blame] | 175 | if (crtc_funcs->disable) |
| 176 | (*crtc_funcs->disable)(crtc); |
| 177 | else |
| 178 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 179 | crtc->primary->fb = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 180 | } |
| 181 | } |
| 182 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 183 | |
| 184 | /** |
| 185 | * drm_helper_disable_unused_functions - disable unused objects |
| 186 | * @dev: DRM device |
| 187 | * |
| 188 | * This function walks through the entire mode setting configuration of @dev. It |
| 189 | * will remove any crtc links of unused encoders and encoder links of |
| 190 | * disconnected connectors. Then it will disable all unused encoders and crtcs |
| 191 | * either by calling their disable callback if available or by calling their |
| 192 | * dpms callback with DRM_MODE_DPMS_OFF. |
| 193 | */ |
| 194 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
| 195 | { |
| 196 | drm_modeset_lock_all(dev); |
| 197 | __drm_helper_disable_unused_functions(dev); |
| 198 | drm_modeset_unlock_all(dev); |
| 199 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 200 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
| 201 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 202 | /* |
| 203 | * Check the CRTC we're going to map each output to vs. its current |
| 204 | * CRTC. If they don't match, we have to disable the output and the CRTC |
| 205 | * since the driver will have to re-route things. |
| 206 | */ |
| 207 | static void |
| 208 | drm_crtc_prepare_encoders(struct drm_device *dev) |
| 209 | { |
| 210 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 211 | struct drm_encoder *encoder; |
| 212 | |
| 213 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 214 | encoder_funcs = encoder->helper_private; |
| 215 | /* Disable unused encoders */ |
| 216 | if (encoder->crtc == NULL) |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 217 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 218 | /* Disable encoders whose CRTC is about to change */ |
| 219 | if (encoder_funcs->get_crtc && |
| 220 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 221 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 222 | } |
| 223 | } |
| 224 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 225 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 226 | * drm_crtc_helper_set_mode - internal helper to set a mode |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 227 | * @crtc: CRTC to program |
| 228 | * @mode: mode to use |
Alex Deucher | 4c9287c | 2012-11-09 17:26:32 +0000 | [diff] [blame] | 229 | * @x: horizontal offset into the surface |
| 230 | * @y: vertical offset into the surface |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 231 | * @old_fb: old framebuffer, for cleanup |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 232 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 233 | * 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] | 234 | * to fixup or reject the mode prior to trying to set it. This is an internal |
| 235 | * helper that drivers could e.g. use to update properties that require the |
| 236 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
| 237 | * example for changing whether audio is enabled on a hdmi link or for changing |
| 238 | * panel fitter or dither attributes. It is also called by the |
| 239 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
| 240 | * sequence. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 241 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 242 | * Returns: |
| 243 | * True if the mode was set successfully, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 244 | */ |
| 245 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| 246 | struct drm_display_mode *mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 247 | int x, int y, |
| 248 | struct drm_framebuffer *old_fb) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 249 | { |
| 250 | struct drm_device *dev = crtc->dev; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 251 | struct drm_display_mode *adjusted_mode, saved_mode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 252 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 253 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 254 | int saved_x, saved_y; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 255 | bool saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 256 | struct drm_encoder *encoder; |
| 257 | bool ret = true; |
| 258 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 259 | drm_warn_on_modeset_not_all_locked(dev); |
| 260 | |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 261 | saved_enabled = crtc->enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 262 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 263 | if (!crtc->enabled) |
| 264 | return true; |
| 265 | |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 266 | adjusted_mode = drm_mode_duplicate(dev, mode); |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 267 | if (!adjusted_mode) { |
| 268 | crtc->enabled = saved_enabled; |
Ville Syrjälä | 6bfc56a | 2012-03-13 12:35:48 +0200 | [diff] [blame] | 269 | return false; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 270 | } |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 271 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 272 | saved_mode = crtc->mode; |
| 273 | saved_x = crtc->x; |
| 274 | saved_y = crtc->y; |
| 275 | |
| 276 | /* Update crtc values up front so the driver can rely on them for mode |
| 277 | * setting. |
| 278 | */ |
| 279 | crtc->mode = *mode; |
| 280 | crtc->x = x; |
| 281 | crtc->y = y; |
| 282 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 283 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
| 284 | * adjust it according to limitations or connector properties, and also |
| 285 | * a chance to reject the mode entirely. |
| 286 | */ |
| 287 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 288 | |
| 289 | if (encoder->crtc != crtc) |
| 290 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 291 | |
| 292 | if (encoder->bridge && encoder->bridge->funcs->mode_fixup) { |
| 293 | ret = encoder->bridge->funcs->mode_fixup( |
| 294 | encoder->bridge, mode, adjusted_mode); |
| 295 | if (!ret) { |
| 296 | DRM_DEBUG_KMS("Bridge fixup failed\n"); |
| 297 | goto done; |
| 298 | } |
| 299 | } |
| 300 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 301 | encoder_funcs = encoder->helper_private; |
| 302 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
| 303 | adjusted_mode))) { |
Adam Jackson | 836e53d | 2011-10-10 16:21:27 -0400 | [diff] [blame] | 304 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 305 | goto done; |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
Adam Jackson | 836e53d | 2011-10-10 16:21:27 -0400 | [diff] [blame] | 310 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 311 | goto done; |
| 312 | } |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 313 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 314 | |
| 315 | /* Prepare the encoders and CRTCs before setting the mode. */ |
| 316 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 317 | |
| 318 | if (encoder->crtc != crtc) |
| 319 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 320 | |
| 321 | if (encoder->bridge) |
| 322 | encoder->bridge->funcs->disable(encoder->bridge); |
| 323 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 324 | encoder_funcs = encoder->helper_private; |
| 325 | /* Disable the encoders as the first thing we do. */ |
| 326 | encoder_funcs->prepare(encoder); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 327 | |
| 328 | if (encoder->bridge) |
| 329 | encoder->bridge->funcs->post_disable(encoder->bridge); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 330 | } |
| 331 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 332 | drm_crtc_prepare_encoders(dev); |
| 333 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 334 | crtc_funcs->prepare(crtc); |
| 335 | |
| 336 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
| 337 | * on the DPLL. |
| 338 | */ |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 339 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
| 340 | if (!ret) |
| 341 | goto done; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 342 | |
| 343 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 344 | |
| 345 | if (encoder->crtc != crtc) |
| 346 | continue; |
| 347 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 348 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
Jani Nikula | 83a8cfd | 2014-06-03 14:56:22 +0300 | [diff] [blame] | 349 | encoder->base.id, encoder->name, |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 350 | mode->base.id, mode->name); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 351 | encoder_funcs = encoder->helper_private; |
| 352 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 353 | |
| 354 | if (encoder->bridge && encoder->bridge->funcs->mode_set) |
| 355 | encoder->bridge->funcs->mode_set(encoder->bridge, mode, |
| 356 | adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 357 | } |
| 358 | |
| 359 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
| 360 | crtc_funcs->commit(crtc); |
| 361 | |
| 362 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 363 | |
| 364 | if (encoder->crtc != crtc) |
| 365 | continue; |
| 366 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 367 | if (encoder->bridge) |
| 368 | encoder->bridge->funcs->pre_enable(encoder->bridge); |
| 369 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 370 | encoder_funcs = encoder->helper_private; |
| 371 | encoder_funcs->commit(encoder); |
| 372 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 373 | if (encoder->bridge) |
| 374 | encoder->bridge->funcs->enable(encoder->bridge); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 375 | } |
| 376 | |
Mario Kleiner | 27641c3 | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 377 | /* Store real post-adjustment hardware mode. */ |
| 378 | crtc->hwmode = *adjusted_mode; |
| 379 | |
| 380 | /* Calculate and store various constants which |
| 381 | * are later needed by vblank and swap-completion |
| 382 | * timestamping. They are derived from true hwmode. |
| 383 | */ |
Ville Syrjälä | 545cdd5 | 2013-10-26 17:16:30 +0300 | [diff] [blame] | 384 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
Mario Kleiner | 27641c3 | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 385 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 386 | /* FIXME: add subpixel order */ |
| 387 | done: |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 388 | drm_mode_destroy(dev, adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 389 | if (!ret) { |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 390 | crtc->enabled = saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 391 | crtc->mode = saved_mode; |
| 392 | crtc->x = saved_x; |
| 393 | crtc->y = saved_y; |
| 394 | } |
| 395 | |
| 396 | return ret; |
| 397 | } |
| 398 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
| 399 | |
Thierry Reding | a74591d | 2014-04-29 11:44:39 +0200 | [diff] [blame] | 400 | static void |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 401 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
| 402 | { |
| 403 | struct drm_device *dev = crtc->dev; |
| 404 | struct drm_connector *connector; |
| 405 | struct drm_encoder *encoder; |
| 406 | |
| 407 | /* Decouple all encoders and their attached connectors from this crtc */ |
| 408 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 409 | if (encoder->crtc != crtc) |
| 410 | continue; |
| 411 | |
| 412 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 413 | if (connector->encoder != encoder) |
| 414 | continue; |
| 415 | |
| 416 | connector->encoder = NULL; |
Thierry Reding | a6ad623 | 2013-10-02 15:50:06 +0200 | [diff] [blame] | 417 | |
| 418 | /* |
| 419 | * drm_helper_disable_unused_functions() ought to be |
| 420 | * doing this, but since we've decoupled the encoder |
| 421 | * from the connector above, the required connection |
| 422 | * between them is henceforth no longer available. |
| 423 | */ |
| 424 | connector->dpms = DRM_MODE_DPMS_OFF; |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 425 | } |
| 426 | } |
| 427 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 428 | __drm_helper_disable_unused_functions(dev); |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 429 | } |
| 430 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 431 | /** |
| 432 | * drm_crtc_helper_set_config - set a new config from userspace |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 433 | * @set: mode set configuration |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 434 | * |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 435 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
Masanari Iida | e227867 | 2014-02-18 22:54:36 +0900 | [diff] [blame] | 436 | * from userspace or internally e.g. from the fbdev support code) in @set, and |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 437 | * enable it. This is the main helper functions for drivers that implement |
| 438 | * kernel mode setting with the crtc helper functions and the assorted |
| 439 | * ->prepare(), ->modeset() and ->commit() helper callbacks. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 440 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 441 | * Returns: |
| 442 | * Returns 0 on success, negative errno numbers on failure. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 443 | */ |
| 444 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
| 445 | { |
| 446 | struct drm_device *dev; |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 447 | struct drm_crtc *new_crtc; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 448 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
Jakob Bornecrantz | 4cb72b1 | 2009-08-03 13:43:59 +0100 | [diff] [blame] | 449 | bool mode_changed = false; /* if true do a full mode set */ |
| 450 | 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] | 451 | struct drm_connector *save_connectors, *connector; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 452 | int count = 0, ro, fail = 0; |
| 453 | struct drm_crtc_helper_funcs *crtc_funcs; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 454 | struct drm_mode_set save_set; |
Laurent Pinchart | 4a1b071 | 2012-05-17 13:27:21 +0200 | [diff] [blame] | 455 | int ret; |
Keith Packard | bf9dc10 | 2010-11-26 10:45:58 -0800 | [diff] [blame] | 456 | int i; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 457 | |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 458 | DRM_DEBUG_KMS("\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 459 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 460 | BUG_ON(!set); |
| 461 | BUG_ON(!set->crtc); |
| 462 | BUG_ON(!set->crtc->helper_private); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 463 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 464 | /* Enforce sane interface api - has been abused by the fb helper. */ |
| 465 | BUG_ON(!set->mode && set->fb); |
| 466 | BUG_ON(set->fb && set->num_connectors == 0); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 467 | |
| 468 | crtc_funcs = set->crtc->helper_private; |
| 469 | |
Chris Wilson | ede3ff5 | 2011-01-31 11:16:33 +0000 | [diff] [blame] | 470 | if (!set->mode) |
| 471 | set->fb = NULL; |
| 472 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 473 | if (set->fb) { |
| 474 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
| 475 | set->crtc->base.id, set->fb->base.id, |
| 476 | (int)set->num_connectors, set->x, set->y); |
| 477 | } else { |
Chris Wilson | ede3ff5 | 2011-01-31 11:16:33 +0000 | [diff] [blame] | 478 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
Thierry Reding | a74591d | 2014-04-29 11:44:39 +0200 | [diff] [blame] | 479 | drm_crtc_helper_disable(set->crtc); |
| 480 | return 0; |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 481 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 482 | |
| 483 | dev = set->crtc->dev; |
| 484 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 485 | drm_warn_on_modeset_not_all_locked(dev); |
| 486 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 487 | /* |
| 488 | * Allocate space for the backup of all (non-pointer) encoder and |
| 489 | * connector data. |
| 490 | */ |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 491 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
| 492 | sizeof(struct drm_encoder), GFP_KERNEL); |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 493 | if (!save_encoders) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 494 | return -ENOMEM; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 495 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 496 | save_connectors = kzalloc(dev->mode_config.num_connector * |
| 497 | sizeof(struct drm_connector), GFP_KERNEL); |
| 498 | if (!save_connectors) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 499 | kfree(save_encoders); |
| 500 | return -ENOMEM; |
| 501 | } |
| 502 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 503 | /* |
| 504 | * Copy data. Note that driver private data is not affected. |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 505 | * Should anything bad happen only the expected state is |
| 506 | * restored, not the drivers personal bookkeeping. |
| 507 | */ |
| 508 | count = 0; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 509 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 510 | save_encoders[count++] = *encoder; |
| 511 | } |
| 512 | |
| 513 | count = 0; |
| 514 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 515 | save_connectors[count++] = *connector; |
| 516 | } |
| 517 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 518 | save_set.crtc = set->crtc; |
| 519 | save_set.mode = &set->crtc->mode; |
| 520 | save_set.x = set->crtc->x; |
| 521 | save_set.y = set->crtc->y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 522 | save_set.fb = set->crtc->primary->fb; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 523 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 524 | /* We should be able to check here if the fb has the same properties |
| 525 | * and then just flip_or_move it */ |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 526 | if (set->crtc->primary->fb != set->fb) { |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 527 | /* If we have no fb then treat it as a full mode set */ |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 528 | if (set->crtc->primary->fb == NULL) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 529 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 530 | mode_changed = true; |
Jakob Bornecrantz | 4cb72b1 | 2009-08-03 13:43:59 +0100 | [diff] [blame] | 531 | } else if (set->fb == NULL) { |
| 532 | mode_changed = true; |
Laurent Pinchart | ce83adf | 2013-04-22 01:38:47 +0200 | [diff] [blame] | 533 | } else if (set->fb->pixel_format != |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 534 | set->crtc->primary->fb->pixel_format) { |
Laurent Pinchart | ce83adf | 2013-04-22 01:38:47 +0200 | [diff] [blame] | 535 | mode_changed = true; |
Dave Airlie | 8dff474 | 2010-02-11 14:28:58 +1000 | [diff] [blame] | 536 | } else |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 537 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 541 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 542 | |
| 543 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 544 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 545 | drm_mode_debug_printmodeline(&set->crtc->mode); |
| 546 | drm_mode_debug_printmodeline(set->mode); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 547 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 548 | } |
| 549 | |
| 550 | /* a) traverse passed in connector list and get encoders for them */ |
| 551 | count = 0; |
| 552 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 553 | struct drm_connector_helper_funcs *connector_funcs = |
| 554 | connector->helper_private; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 555 | new_encoder = connector->encoder; |
| 556 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 557 | if (set->connectors[ro] == connector) { |
| 558 | new_encoder = connector_funcs->best_encoder(connector); |
| 559 | /* if we can't get an encoder for a connector |
| 560 | we are setting now - then fail */ |
| 561 | if (new_encoder == NULL) |
| 562 | /* don't break so fail path works correct */ |
| 563 | fail = 1; |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 564 | |
| 565 | if (connector->dpms != DRM_MODE_DPMS_ON) { |
| 566 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); |
| 567 | mode_changed = true; |
| 568 | } |
Daniel Vetter | 177cf92 | 2014-04-01 22:14:59 +0200 | [diff] [blame] | 569 | |
| 570 | break; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 571 | } |
| 572 | } |
| 573 | |
| 574 | if (new_encoder != connector->encoder) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 575 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 576 | mode_changed = true; |
Maarten Maathuis | ff846ab | 2009-08-19 00:56:45 +0200 | [diff] [blame] | 577 | /* If the encoder is reused for another connector, then |
| 578 | * the appropriate crtc will be set later. |
| 579 | */ |
Maarten Maathuis | ff6fdbe | 2009-09-01 03:39:04 +0200 | [diff] [blame] | 580 | if (connector->encoder) |
| 581 | connector->encoder->crtc = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 582 | connector->encoder = new_encoder; |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | if (fail) { |
| 587 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 588 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 589 | } |
| 590 | |
| 591 | count = 0; |
| 592 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 593 | if (!connector->encoder) |
| 594 | continue; |
| 595 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 596 | if (connector->encoder->crtc == set->crtc) |
| 597 | new_crtc = NULL; |
| 598 | else |
| 599 | new_crtc = connector->encoder->crtc; |
| 600 | |
| 601 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 602 | if (set->connectors[ro] == connector) |
| 603 | new_crtc = set->crtc; |
| 604 | } |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 605 | |
| 606 | /* Make sure the new CRTC will work with the encoder */ |
| 607 | if (new_crtc && |
| 608 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
| 609 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 610 | goto fail; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 611 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 612 | if (new_crtc != connector->encoder->crtc) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 613 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 614 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 615 | connector->encoder->crtc = new_crtc; |
| 616 | } |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 617 | if (new_crtc) { |
| 618 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
Jani Nikula | 2593382 | 2014-06-03 14:56:20 +0300 | [diff] [blame] | 619 | connector->base.id, connector->name, |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 620 | new_crtc->base.id); |
| 621 | } else { |
| 622 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
Jani Nikula | 2593382 | 2014-06-03 14:56:20 +0300 | [diff] [blame] | 623 | connector->base.id, connector->name); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 624 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 625 | } |
| 626 | |
| 627 | /* mode_set_base is not a required function */ |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 628 | if (fb_changed && !crtc_funcs->mode_set_base) |
| 629 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 630 | |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 631 | if (mode_changed) { |
Ilija Hadzic | 48b1f5d | 2013-10-29 11:09:45 -0400 | [diff] [blame] | 632 | if (drm_helper_crtc_in_use(set->crtc)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 633 | DRM_DEBUG_KMS("attempting to set mode from" |
| 634 | " userspace\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 635 | drm_mode_debug_printmodeline(set->mode); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 636 | set->crtc->primary->fb = set->fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 637 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 638 | set->x, set->y, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 639 | save_set.fb)) { |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 640 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
| 641 | set->crtc->base.id); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 642 | set->crtc->primary->fb = save_set.fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 643 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 644 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 645 | } |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 646 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
| 647 | for (i = 0; i < set->num_connectors; i++) { |
| 648 | DRM_DEBUG_KMS("\t[CONNECTOR:%d:%s] set DPMS on\n", set->connectors[i]->base.id, |
Jani Nikula | 2593382 | 2014-06-03 14:56:20 +0300 | [diff] [blame] | 649 | set->connectors[i]->name); |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 650 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
| 651 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 652 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 653 | __drm_helper_disable_unused_functions(dev); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 654 | } else if (fb_changed) { |
Ben Skeggs | 9b1596a | 2009-09-18 10:43:52 +1000 | [diff] [blame] | 655 | set->crtc->x = set->x; |
| 656 | set->crtc->y = set->y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 657 | set->crtc->primary->fb = set->fb; |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 658 | ret = crtc_funcs->mode_set_base(set->crtc, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 659 | set->x, set->y, save_set.fb); |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 660 | if (ret != 0) { |
Ilija Hadzic | fbce406 | 2013-10-29 11:09:43 -0400 | [diff] [blame] | 661 | set->crtc->x = save_set.x; |
| 662 | set->crtc->y = save_set.y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 663 | set->crtc->primary->fb = save_set.fb; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 664 | goto fail; |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 665 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 666 | } |
| 667 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 668 | kfree(save_connectors); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 669 | kfree(save_encoders); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 670 | return 0; |
| 671 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 672 | fail: |
| 673 | /* Restore all previous data. */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 674 | count = 0; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 675 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 676 | *encoder = save_encoders[count++]; |
Chris Wilson | e62fb64 | 2009-02-11 16:39:21 +0000 | [diff] [blame] | 677 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 678 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 679 | count = 0; |
| 680 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 681 | *connector = save_connectors[count++]; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 682 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 683 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 684 | /* Try to restore the config */ |
| 685 | if (mode_changed && |
| 686 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
| 687 | save_set.y, save_set.fb)) |
| 688 | DRM_ERROR("failed to restore config after modeset failure\n"); |
| 689 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 690 | kfree(save_connectors); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 691 | kfree(save_encoders); |
| 692 | return ret; |
| 693 | } |
| 694 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
| 695 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 696 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
| 697 | { |
| 698 | int dpms = DRM_MODE_DPMS_OFF; |
| 699 | struct drm_connector *connector; |
| 700 | struct drm_device *dev = encoder->dev; |
| 701 | |
| 702 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 703 | if (connector->encoder == encoder) |
| 704 | if (connector->dpms < dpms) |
| 705 | dpms = connector->dpms; |
| 706 | return dpms; |
| 707 | } |
| 708 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 709 | /* Helper which handles bridge ordering around encoder dpms */ |
| 710 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 711 | { |
| 712 | struct drm_bridge *bridge = encoder->bridge; |
| 713 | struct drm_encoder_helper_funcs *encoder_funcs; |
| 714 | |
| 715 | if (bridge) { |
| 716 | if (mode == DRM_MODE_DPMS_ON) |
| 717 | bridge->funcs->pre_enable(bridge); |
| 718 | else |
| 719 | bridge->funcs->disable(bridge); |
| 720 | } |
| 721 | |
| 722 | encoder_funcs = encoder->helper_private; |
| 723 | if (encoder_funcs->dpms) |
| 724 | encoder_funcs->dpms(encoder, mode); |
| 725 | |
| 726 | if (bridge) { |
| 727 | if (mode == DRM_MODE_DPMS_ON) |
| 728 | bridge->funcs->enable(bridge); |
| 729 | else |
| 730 | bridge->funcs->post_disable(bridge); |
| 731 | } |
| 732 | } |
| 733 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 734 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
| 735 | { |
| 736 | int dpms = DRM_MODE_DPMS_OFF; |
| 737 | struct drm_connector *connector; |
| 738 | struct drm_device *dev = crtc->dev; |
| 739 | |
| 740 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 741 | if (connector->encoder && connector->encoder->crtc == crtc) |
| 742 | if (connector->dpms < dpms) |
| 743 | dpms = connector->dpms; |
| 744 | return dpms; |
| 745 | } |
| 746 | |
| 747 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 748 | * drm_helper_connector_dpms() - connector dpms helper implementation |
| 749 | * @connector: affected connector |
| 750 | * @mode: DPMS mode |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 751 | * |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 752 | * This is the main helper function provided by the crtc helper framework for |
| 753 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
| 754 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() |
| 755 | * callback provided by the driver appropriately. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 756 | */ |
| 757 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
| 758 | { |
| 759 | struct drm_encoder *encoder = connector->encoder; |
| 760 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 761 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 762 | |
| 763 | if (mode == connector->dpms) |
| 764 | return; |
| 765 | |
| 766 | old_dpms = connector->dpms; |
| 767 | connector->dpms = mode; |
| 768 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 769 | if (encoder) |
| 770 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); |
| 771 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 772 | /* from off to on, do crtc then encoder */ |
| 773 | if (mode < old_dpms) { |
| 774 | if (crtc) { |
| 775 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 776 | if (crtc_funcs->dpms) |
| 777 | (*crtc_funcs->dpms) (crtc, |
| 778 | drm_helper_choose_crtc_dpms(crtc)); |
| 779 | } |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 780 | if (encoder) |
| 781 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 782 | } |
| 783 | |
| 784 | /* from on to off, do encoder then crtc */ |
| 785 | if (mode > old_dpms) { |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 786 | if (encoder) |
| 787 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 788 | if (crtc) { |
| 789 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 790 | if (crtc_funcs->dpms) |
| 791 | (*crtc_funcs->dpms) (crtc, |
| 792 | drm_helper_choose_crtc_dpms(crtc)); |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | return; |
| 797 | } |
| 798 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
| 799 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 800 | /** |
| 801 | * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata |
| 802 | * @fb: drm_framebuffer object to fill out |
| 803 | * @mode_cmd: metadata from the userspace fb creation request |
| 804 | * |
| 805 | * This helper can be used in a drivers fb_create callback to pre-fill the fb's |
| 806 | * metadata fields. |
| 807 | */ |
Daniel Vetter | 9fd9378 | 2014-01-23 22:16:24 +0100 | [diff] [blame] | 808 | void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
| 809 | struct drm_mode_fb_cmd2 *mode_cmd) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 810 | { |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 811 | int i; |
| 812 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 813 | fb->width = mode_cmd->width; |
| 814 | fb->height = mode_cmd->height; |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 815 | for (i = 0; i < 4; i++) { |
| 816 | fb->pitches[i] = mode_cmd->pitches[i]; |
| 817 | fb->offsets[i] = mode_cmd->offsets[i]; |
| 818 | } |
Dave Airlie | 248dbc2 | 2011-11-29 20:02:54 +0000 | [diff] [blame] | 819 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
Jesse Barnes | 308e5bc | 2011-11-14 14:51:28 -0800 | [diff] [blame] | 820 | &fb->bits_per_pixel); |
| 821 | fb->pixel_format = mode_cmd->pixel_format; |
Fabien DESSENNE | d980b18 | 2014-07-01 14:40:42 +0200 | [diff] [blame] | 822 | fb->flags = mode_cmd->flags; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 823 | } |
| 824 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
| 825 | |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 826 | /** |
| 827 | * drm_helper_resume_force_mode - force-restore mode setting configuration |
| 828 | * @dev: drm_device which should be restored |
| 829 | * |
| 830 | * Drivers which use the mode setting helpers can use this function to |
| 831 | * force-restore the mode setting configuration e.g. on resume or when something |
| 832 | * else might have trampled over the hw state (like some overzealous old BIOSen |
| 833 | * tended to do). |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 834 | * |
| 835 | * This helper doesn't provide a error return value since restoring the old |
| 836 | * config should never fail due to resource allocation issues since the driver |
| 837 | * has successfully set the restored configuration already. Hence this should |
| 838 | * boil down to the equivalent of a few dpms on calls, which also don't provide |
| 839 | * an error code. |
| 840 | * |
| 841 | * Drivers where simply restoring an old configuration again might fail (e.g. |
| 842 | * due to slight differences in allocating shared resources when the |
| 843 | * configuration is restored in a different order than when userspace set it up) |
| 844 | * need to use their own restore logic. |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 845 | */ |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 846 | void drm_helper_resume_force_mode(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 847 | { |
| 848 | struct drm_crtc *crtc; |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 849 | struct drm_encoder *encoder; |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 850 | struct drm_crtc_helper_funcs *crtc_funcs; |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 851 | int encoder_dpms; |
| 852 | bool ret; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 853 | |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame] | 854 | drm_modeset_lock_all(dev); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 855 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 856 | |
| 857 | if (!crtc->enabled) |
| 858 | continue; |
| 859 | |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 860 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 861 | crtc->x, crtc->y, crtc->primary->fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 862 | |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 863 | /* Restoring the old config should never fail! */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 864 | if (ret == false) |
| 865 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 866 | |
| 867 | /* Turn off outputs that were already powered off */ |
| 868 | if (drm_helper_choose_crtc_dpms(crtc)) { |
| 869 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 870 | |
| 871 | if(encoder->crtc != crtc) |
| 872 | continue; |
| 873 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 874 | encoder_dpms = drm_helper_choose_encoder_dpms( |
| 875 | encoder); |
| 876 | |
| 877 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 878 | } |
Chris Wilson | 817e631 | 2010-08-06 15:03:31 +0100 | [diff] [blame] | 879 | |
| 880 | crtc_funcs = crtc->helper_private; |
| 881 | if (crtc_funcs->dpms) |
| 882 | (*crtc_funcs->dpms) (crtc, |
| 883 | drm_helper_choose_crtc_dpms(crtc)); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 884 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 885 | } |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 886 | |
Zhao Yakui | af4fcb5 | 2009-07-08 14:13:13 +0800 | [diff] [blame] | 887 | /* disable the unused connectors while restoring the modesetting */ |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 888 | __drm_helper_disable_unused_functions(dev); |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame] | 889 | drm_modeset_unlock_all(dev); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 890 | } |
| 891 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame^] | 892 | |
| 893 | /** |
| 894 | * drm_helper_crtc_mode_set - mode_set implementation for atomic plane helpers |
| 895 | * @crtc: DRM CRTC |
| 896 | * @mode: DRM display mode which userspace requested |
| 897 | * @adjusted_mode: DRM display mode adjusted by ->mode_fixup callbacks |
| 898 | * @x: x offset of the CRTC scanout area on the underlying framebuffer |
| 899 | * @y: y offset of the CRTC scanout area on the underlying framebuffer |
| 900 | * @old_fb: previous framebuffer |
| 901 | * |
| 902 | * This function implements a callback useable as the ->mode_set callback |
| 903 | * required by the crtc helpers. Besides the atomic plane helper functions for |
| 904 | * the primary plane the driver must also provide the ->mode_set_nofb callback |
| 905 | * to set up the crtc. |
| 906 | * |
| 907 | * This is a transitional helper useful for converting drivers to the atomic |
| 908 | * interfaces. |
| 909 | */ |
| 910 | int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, |
| 911 | struct drm_display_mode *adjusted_mode, int x, int y, |
| 912 | struct drm_framebuffer *old_fb) |
| 913 | { |
| 914 | struct drm_crtc_state *crtc_state; |
| 915 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 916 | int ret; |
| 917 | |
| 918 | if (crtc->funcs->atomic_duplicate_state) |
| 919 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); |
| 920 | else if (crtc->state) |
| 921 | crtc_state = kmemdup(crtc->state, sizeof(*crtc_state), |
| 922 | GFP_KERNEL); |
| 923 | else |
| 924 | crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL); |
| 925 | if (!crtc_state) |
| 926 | return -ENOMEM; |
| 927 | |
| 928 | crtc_state->enable = true; |
| 929 | crtc_state->planes_changed = true; |
| 930 | drm_mode_copy(&crtc_state->mode, mode); |
| 931 | drm_mode_copy(&crtc_state->adjusted_mode, adjusted_mode); |
| 932 | |
| 933 | if (crtc_funcs->atomic_check) { |
| 934 | ret = crtc_funcs->atomic_check(crtc, crtc_state); |
| 935 | if (ret) { |
| 936 | kfree(crtc_state); |
| 937 | |
| 938 | return ret; |
| 939 | } |
| 940 | } |
| 941 | |
| 942 | swap(crtc->state, crtc_state); |
| 943 | |
| 944 | crtc_funcs->mode_set_nofb(crtc); |
| 945 | |
| 946 | if (crtc_state) { |
| 947 | if (crtc->funcs->atomic_destroy_state) |
| 948 | crtc->funcs->atomic_destroy_state(crtc, crtc_state); |
| 949 | else |
| 950 | kfree(crtc_state); |
| 951 | } |
| 952 | |
| 953 | return drm_helper_crtc_mode_set_base(crtc, x, y, old_fb); |
| 954 | } |
| 955 | EXPORT_SYMBOL(drm_helper_crtc_mode_set); |
| 956 | |
| 957 | /** |
| 958 | * drm_helper_crtc_mode_set_base - mode_set_base implementation for atomic plane helpers |
| 959 | * @crtc: DRM CRTC |
| 960 | * @x: x offset of the CRTC scanout area on the underlying framebuffer |
| 961 | * @y: y offset of the CRTC scanout area on the underlying framebuffer |
| 962 | * @old_fb: previous framebuffer |
| 963 | * |
| 964 | * This function implements a callback useable as the ->mode_set_base used |
| 965 | * required by the crtc helpers. The driver must provide the atomic plane helper |
| 966 | * functions for the primary plane. |
| 967 | * |
| 968 | * This is a transitional helper useful for converting drivers to the atomic |
| 969 | * interfaces. |
| 970 | */ |
| 971 | int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, |
| 972 | struct drm_framebuffer *old_fb) |
| 973 | { |
| 974 | struct drm_plane_state *plane_state; |
| 975 | struct drm_plane *plane = crtc->primary; |
| 976 | |
| 977 | if (plane->funcs->atomic_duplicate_state) |
| 978 | plane_state = plane->funcs->atomic_duplicate_state(plane); |
| 979 | else if (plane->state) |
| 980 | plane_state = kmemdup(plane->state, sizeof(*plane_state), |
| 981 | GFP_KERNEL); |
| 982 | else |
| 983 | plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL); |
| 984 | if (!plane_state) |
| 985 | return -ENOMEM; |
| 986 | |
| 987 | plane_state->crtc = crtc; |
| 988 | plane_state->fb = crtc->primary->fb; |
| 989 | plane_state->crtc_x = 0; |
| 990 | plane_state->crtc_y = 0; |
| 991 | plane_state->crtc_h = crtc->mode.vdisplay; |
| 992 | plane_state->crtc_w = crtc->mode.hdisplay; |
| 993 | plane_state->src_x = x << 16; |
| 994 | plane_state->src_y = y << 16; |
| 995 | plane_state->src_h = crtc->mode.vdisplay << 16; |
| 996 | plane_state->src_w = crtc->mode.hdisplay << 16; |
| 997 | |
| 998 | return drm_plane_helper_commit(plane, plane_state, old_fb); |
| 999 | } |
| 1000 | EXPORT_SYMBOL(drm_helper_crtc_mode_set_base); |