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> |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 37 | #include <drm/drm_atomic.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 38 | #include <drm/drm_crtc.h> |
| 39 | #include <drm/drm_fourcc.h> |
| 40 | #include <drm/drm_crtc_helper.h> |
| 41 | #include <drm/drm_fb_helper.h> |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 42 | #include <drm/drm_plane_helper.h> |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 43 | #include <drm/drm_atomic_helper.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 44 | #include <drm/drm_edid.h> |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 45 | |
Daniel Vetter | 3150c7d | 2014-11-06 20:53:29 +0100 | [diff] [blame] | 46 | /** |
| 47 | * DOC: overview |
| 48 | * |
| 49 | * The CRTC modeset helper library provides a default set_config implementation |
| 50 | * in drm_crtc_helper_set_config(). Plus a few other convenience functions using |
| 51 | * the same callbacks which drivers can use to e.g. restore the modeset |
| 52 | * configuration on resume with drm_helper_resume_force_mode(). |
| 53 | * |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 54 | * Note that this helper library doesn't track the current power state of CRTCs |
| 55 | * and encoders. It can call callbacks like ->dpms() even though the hardware is |
| 56 | * already in the desired state. This deficiency has been fixed in the atomic |
| 57 | * helpers. |
| 58 | * |
Daniel Vetter | 3150c7d | 2014-11-06 20:53:29 +0100 | [diff] [blame] | 59 | * The driver callbacks are mostly compatible with the atomic modeset helpers, |
| 60 | * except for the handling of the primary plane: Atomic helpers require that the |
| 61 | * primary plane is implemented as a real standalone plane and not directly tied |
| 62 | * to the CRTC state. For easier transition this library provides functions to |
| 63 | * implement the old semantics required by the CRTC helpers using the new plane |
| 64 | * and atomic helper callbacks. |
| 65 | * |
| 66 | * Drivers are strongly urged to convert to the atomic helpers (by way of first |
| 67 | * converting to the plane helpers). New drivers must not use these functions |
| 68 | * but need to implement the atomic interface instead, potentially using the |
| 69 | * atomic helpers for that. |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 70 | * |
| 71 | * These legacy modeset helpers use the same function table structures as |
| 72 | * all other modesetting helpers. See the documentation for struct |
| 73 | * &drm_crtc_helper_funcs, struct &drm_encoder_helper_funcs and struct |
| 74 | * &drm_connector_helper_funcs. |
Daniel Vetter | 3150c7d | 2014-11-06 20:53:29 +0100 | [diff] [blame] | 75 | */ |
Daniel Vetter | 92b6f89 | 2013-10-08 17:44:47 +0200 | [diff] [blame] | 76 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
| 77 | MODULE_DESCRIPTION("DRM KMS helper"); |
| 78 | MODULE_LICENSE("GPL and additional rights"); |
| 79 | |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 80 | /** |
| 81 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the |
| 82 | * connector list |
| 83 | * @dev: drm device to operate on |
| 84 | * |
| 85 | * Some userspace presumes that the first connected connector is the main |
| 86 | * display, where it's supposed to display e.g. the login screen. For |
| 87 | * laptops, this should be the main panel. Use this function to sort all |
| 88 | * (eDP/LVDS) panels to the front of the connector list, instead of |
| 89 | * painstakingly trying to initialize them in the right order. |
| 90 | */ |
Daniel Vetter | cfc1a06 | 2012-10-27 15:52:04 +0200 | [diff] [blame] | 91 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
| 92 | { |
| 93 | struct drm_connector *connector, *tmp; |
| 94 | struct list_head panel_list; |
| 95 | |
| 96 | INIT_LIST_HEAD(&panel_list); |
| 97 | |
| 98 | list_for_each_entry_safe(connector, tmp, |
| 99 | &dev->mode_config.connector_list, head) { |
| 100 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || |
| 101 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
| 102 | list_move_tail(&connector->head, &panel_list); |
| 103 | } |
| 104 | |
| 105 | list_splice(&panel_list, &dev->mode_config.connector_list); |
| 106 | } |
| 107 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); |
| 108 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 109 | /** |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 110 | * drm_helper_encoder_in_use - check if a given encoder is in use |
| 111 | * @encoder: encoder to check |
| 112 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 113 | * Checks whether @encoder 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. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 116 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 117 | * Returns: |
| 118 | * True if @encoder is used, false otherwise. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 119 | */ |
| 120 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
| 121 | { |
| 122 | struct drm_connector *connector; |
| 123 | struct drm_device *dev = encoder->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 | */ |
Dave Airlie | 8d4ad9d | 2014-06-05 20:28:59 +1000 | [diff] [blame] | 129 | if (!oops_in_progress) { |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 130 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
Dave Airlie | 8d4ad9d | 2014-06-05 20:28:59 +1000 | [diff] [blame] | 131 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
| 132 | } |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 133 | |
Daniel Vetter | 9a9f5ce | 2015-07-09 23:44:34 +0200 | [diff] [blame] | 134 | drm_for_each_connector(connector, dev) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 135 | if (connector->encoder == encoder) |
| 136 | return true; |
| 137 | return false; |
| 138 | } |
| 139 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
| 140 | |
| 141 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 142 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
| 143 | * @crtc: CRTC to check |
| 144 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 145 | * Checks whether @crtc is with the current mode setting output configuration |
| 146 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 147 | * the DPMS state is tracked separately. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 148 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 149 | * Returns: |
| 150 | * True if @crtc is used, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 151 | */ |
| 152 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
| 153 | { |
| 154 | struct drm_encoder *encoder; |
| 155 | struct drm_device *dev = crtc->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 156 | |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 157 | /* |
| 158 | * We can expect this mutex to be locked if we are not panicking. |
| 159 | * Locking is currently fubar in the panic handler. |
| 160 | */ |
| 161 | if (!oops_in_progress) |
| 162 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
| 163 | |
Daniel Vetter | e4f6254 | 2015-07-09 23:44:35 +0200 | [diff] [blame] | 164 | drm_for_each_encoder(encoder, dev) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 165 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 166 | return true; |
| 167 | return false; |
| 168 | } |
| 169 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
| 170 | |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 171 | static void |
| 172 | drm_encoder_disable(struct drm_encoder *encoder) |
| 173 | { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 174 | const struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 175 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 176 | drm_bridge_disable(encoder->bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 177 | |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 178 | if (encoder_funcs->disable) |
| 179 | (*encoder_funcs->disable)(encoder); |
| 180 | else |
| 181 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 182 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 183 | drm_bridge_post_disable(encoder->bridge); |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 184 | } |
| 185 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 186 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 187 | { |
| 188 | struct drm_encoder *encoder; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 189 | struct drm_crtc *crtc; |
| 190 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 191 | drm_warn_on_modeset_not_all_locked(dev); |
| 192 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 193 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | 92971021 | 2010-12-21 12:47:56 +1000 | [diff] [blame] | 194 | if (!drm_helper_encoder_in_use(encoder)) { |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 195 | drm_encoder_disable(encoder); |
Rob Clark | b5e6c1d | 2014-05-24 14:30:10 -0400 | [diff] [blame] | 196 | /* disconnect encoder from any connector */ |
Dave Airlie | 9c552dd | 2009-09-02 14:00:11 +1000 | [diff] [blame] | 197 | encoder->crtc = NULL; |
Dave Airlie | a3a0544 | 2009-08-31 15:16:30 +1000 | [diff] [blame] | 198 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 199 | } |
| 200 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 201 | drm_for_each_crtc(crtc, dev) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 202 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 203 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 204 | if (!crtc->enabled) { |
Alex Deucher | 5c8d717 | 2010-06-11 17:04:35 -0400 | [diff] [blame] | 205 | if (crtc_funcs->disable) |
| 206 | (*crtc_funcs->disable)(crtc); |
| 207 | else |
| 208 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 209 | crtc->primary->fb = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 210 | } |
| 211 | } |
| 212 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 213 | |
| 214 | /** |
| 215 | * drm_helper_disable_unused_functions - disable unused objects |
| 216 | * @dev: DRM device |
| 217 | * |
| 218 | * This function walks through the entire mode setting configuration of @dev. It |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 219 | * will remove any CRTC links of unused encoders and encoder links of |
| 220 | * disconnected connectors. Then it will disable all unused encoders and CRTCs |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 221 | * either by calling their disable callback if available or by calling their |
| 222 | * dpms callback with DRM_MODE_DPMS_OFF. |
Daniel Vetter | 09859d2 | 2016-01-13 15:31:16 +0100 | [diff] [blame^] | 223 | * |
| 224 | * NOTE: |
| 225 | * |
| 226 | * This function is part of the legacy modeset helper library and will cause |
| 227 | * major confusion with atomic drivers. This is because atomic helpers guarantee |
| 228 | * to never call ->disable() hooks on a disabled function, or ->enable() hooks |
| 229 | * on an enabled functions. drm_helper_disable_unused_functions() on the other |
| 230 | * hand throws such guarantees into the wind and calls disable hooks |
| 231 | * unconditionally on unused functions. |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 232 | */ |
| 233 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
| 234 | { |
| 235 | drm_modeset_lock_all(dev); |
| 236 | __drm_helper_disable_unused_functions(dev); |
| 237 | drm_modeset_unlock_all(dev); |
| 238 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 239 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
| 240 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 241 | /* |
| 242 | * Check the CRTC we're going to map each output to vs. its current |
| 243 | * CRTC. If they don't match, we have to disable the output and the CRTC |
| 244 | * since the driver will have to re-route things. |
| 245 | */ |
| 246 | static void |
| 247 | drm_crtc_prepare_encoders(struct drm_device *dev) |
| 248 | { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 249 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 250 | struct drm_encoder *encoder; |
| 251 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 252 | drm_for_each_encoder(encoder, dev) { |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 253 | encoder_funcs = encoder->helper_private; |
| 254 | /* Disable unused encoders */ |
| 255 | if (encoder->crtc == NULL) |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 256 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 257 | /* Disable encoders whose CRTC is about to change */ |
| 258 | if (encoder_funcs->get_crtc && |
| 259 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 260 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 261 | } |
| 262 | } |
| 263 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 264 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 265 | * drm_crtc_helper_set_mode - internal helper to set a mode |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 266 | * @crtc: CRTC to program |
| 267 | * @mode: mode to use |
Alex Deucher | 4c9287c | 2012-11-09 17:26:32 +0000 | [diff] [blame] | 268 | * @x: horizontal offset into the surface |
| 269 | * @y: vertical offset into the surface |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 270 | * @old_fb: old framebuffer, for cleanup |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 271 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 272 | * 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] | 273 | * to fixup or reject the mode prior to trying to set it. This is an internal |
| 274 | * helper that drivers could e.g. use to update properties that require the |
| 275 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
| 276 | * example for changing whether audio is enabled on a hdmi link or for changing |
| 277 | * panel fitter or dither attributes. It is also called by the |
| 278 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
| 279 | * sequence. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 280 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 281 | * Returns: |
| 282 | * True if the mode was set successfully, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 283 | */ |
| 284 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| 285 | struct drm_display_mode *mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 286 | int x, int y, |
| 287 | struct drm_framebuffer *old_fb) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 288 | { |
| 289 | struct drm_device *dev = crtc->dev; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 290 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 291 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 292 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 293 | int saved_x, saved_y; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 294 | bool saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 295 | struct drm_encoder *encoder; |
| 296 | bool ret = true; |
| 297 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 298 | drm_warn_on_modeset_not_all_locked(dev); |
| 299 | |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 300 | saved_enabled = crtc->enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 301 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 302 | if (!crtc->enabled) |
| 303 | return true; |
| 304 | |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 305 | adjusted_mode = drm_mode_duplicate(dev, mode); |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 306 | if (!adjusted_mode) { |
| 307 | crtc->enabled = saved_enabled; |
Ville Syrjälä | 6bfc56a | 2012-03-13 12:35:48 +0200 | [diff] [blame] | 308 | return false; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 309 | } |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 310 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 311 | saved_mode = crtc->mode; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 312 | saved_hwmode = crtc->hwmode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 313 | saved_x = crtc->x; |
| 314 | saved_y = crtc->y; |
| 315 | |
| 316 | /* Update crtc values up front so the driver can rely on them for mode |
| 317 | * setting. |
| 318 | */ |
| 319 | crtc->mode = *mode; |
| 320 | crtc->x = x; |
| 321 | crtc->y = y; |
| 322 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 323 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
| 324 | * adjust it according to limitations or connector properties, and also |
| 325 | * a chance to reject the mode entirely. |
| 326 | */ |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 327 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 328 | |
| 329 | if (encoder->crtc != crtc) |
| 330 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 331 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 332 | ret = drm_bridge_mode_fixup(encoder->bridge, |
| 333 | mode, adjusted_mode); |
| 334 | if (!ret) { |
| 335 | DRM_DEBUG_KMS("Bridge fixup failed\n"); |
| 336 | goto done; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 337 | } |
| 338 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 339 | encoder_funcs = encoder->helper_private; |
| 340 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
| 341 | adjusted_mode))) { |
Adam Jackson | 836e53d | 2011-10-10 16:21:27 -0400 | [diff] [blame] | 342 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 343 | goto done; |
| 344 | } |
| 345 | } |
| 346 | |
| 347 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
Adam Jackson | 836e53d | 2011-10-10 16:21:27 -0400 | [diff] [blame] | 348 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 349 | goto done; |
| 350 | } |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 351 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 352 | |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 353 | crtc->hwmode = *adjusted_mode; |
| 354 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 355 | /* Prepare the encoders and CRTCs before setting the mode. */ |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 356 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 357 | |
| 358 | if (encoder->crtc != crtc) |
| 359 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 360 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 361 | drm_bridge_disable(encoder->bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 362 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 363 | encoder_funcs = encoder->helper_private; |
| 364 | /* Disable the encoders as the first thing we do. */ |
| 365 | encoder_funcs->prepare(encoder); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 366 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 367 | drm_bridge_post_disable(encoder->bridge); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 368 | } |
| 369 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 370 | drm_crtc_prepare_encoders(dev); |
| 371 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 372 | crtc_funcs->prepare(crtc); |
| 373 | |
| 374 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
| 375 | * on the DPLL. |
| 376 | */ |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 377 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
| 378 | if (!ret) |
| 379 | goto done; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 380 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 381 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 382 | |
| 383 | if (encoder->crtc != crtc) |
| 384 | continue; |
| 385 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 386 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
Jani Nikula | 83a8cfd | 2014-06-03 14:56:22 +0300 | [diff] [blame] | 387 | encoder->base.id, encoder->name, |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 388 | mode->base.id, mode->name); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 389 | encoder_funcs = encoder->helper_private; |
| 390 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 391 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 392 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
| 396 | crtc_funcs->commit(crtc); |
| 397 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 398 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 399 | |
| 400 | if (encoder->crtc != crtc) |
| 401 | continue; |
| 402 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 403 | drm_bridge_pre_enable(encoder->bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 404 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 405 | encoder_funcs = encoder->helper_private; |
| 406 | encoder_funcs->commit(encoder); |
| 407 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 408 | drm_bridge_enable(encoder->bridge); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 409 | } |
| 410 | |
Mario Kleiner | 27641c3 | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 411 | /* Calculate and store various constants which |
| 412 | * are later needed by vblank and swap-completion |
| 413 | * timestamping. They are derived from true hwmode. |
| 414 | */ |
Ville Syrjälä | 545cdd5 | 2013-10-26 17:16:30 +0300 | [diff] [blame] | 415 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
Mario Kleiner | 27641c3 | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 416 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 417 | /* FIXME: add subpixel order */ |
| 418 | done: |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 419 | drm_mode_destroy(dev, adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 420 | if (!ret) { |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 421 | crtc->enabled = saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 422 | crtc->mode = saved_mode; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 423 | crtc->hwmode = saved_hwmode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 424 | crtc->x = saved_x; |
| 425 | crtc->y = saved_y; |
| 426 | } |
| 427 | |
| 428 | return ret; |
| 429 | } |
| 430 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
| 431 | |
Thierry Reding | a74591d | 2014-04-29 11:44:39 +0200 | [diff] [blame] | 432 | static void |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 433 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
| 434 | { |
| 435 | struct drm_device *dev = crtc->dev; |
| 436 | struct drm_connector *connector; |
| 437 | struct drm_encoder *encoder; |
| 438 | |
| 439 | /* Decouple all encoders and their attached connectors from this crtc */ |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 440 | drm_for_each_encoder(encoder, dev) { |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 441 | if (encoder->crtc != crtc) |
| 442 | continue; |
| 443 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 444 | drm_for_each_connector(connector, dev) { |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 445 | if (connector->encoder != encoder) |
| 446 | continue; |
| 447 | |
| 448 | connector->encoder = NULL; |
Thierry Reding | a6ad623 | 2013-10-02 15:50:06 +0200 | [diff] [blame] | 449 | |
| 450 | /* |
| 451 | * drm_helper_disable_unused_functions() ought to be |
| 452 | * doing this, but since we've decoupled the encoder |
| 453 | * from the connector above, the required connection |
| 454 | * between them is henceforth no longer available. |
| 455 | */ |
| 456 | connector->dpms = DRM_MODE_DPMS_OFF; |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 457 | } |
| 458 | } |
| 459 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 460 | __drm_helper_disable_unused_functions(dev); |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 461 | } |
| 462 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 463 | /** |
| 464 | * drm_crtc_helper_set_config - set a new config from userspace |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 465 | * @set: mode set configuration |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 466 | * |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 467 | * The drm_crtc_helper_set_config() helper function implements the set_config |
| 468 | * callback of struct &drm_crtc_funcs for drivers using the legacy CRTC helpers. |
| 469 | * |
| 470 | * It first tries to locate the best encoder for each connector by calling the |
| 471 | * connector ->best_encoder() (struct &drm_connector_helper_funcs) helper |
| 472 | * operation. |
| 473 | * |
| 474 | * After locating the appropriate encoders, the helper function will call the |
| 475 | * mode_fixup encoder and CRTC helper operations to adjust the requested mode, |
| 476 | * or reject it completely in which case an error will be returned to the |
| 477 | * application. If the new configuration after mode adjustment is identical to |
| 478 | * the current configuration the helper function will return without performing |
| 479 | * any other operation. |
| 480 | * |
| 481 | * If the adjusted mode is identical to the current mode but changes to the |
| 482 | * frame buffer need to be applied, the drm_crtc_helper_set_config() function |
| 483 | * will call the CRTC ->mode_set_base() (struct &drm_crtc_helper_funcs) helper |
| 484 | * operation. |
| 485 | * |
| 486 | * If the adjusted mode differs from the current mode, or if the |
| 487 | * ->mode_set_base() helper operation is not provided, the helper function |
| 488 | * performs a full mode set sequence by calling the ->prepare(), ->mode_set() |
| 489 | * and ->commit() CRTC and encoder helper operations, in that order. |
| 490 | * Alternatively it can also use the dpms and disable helper operations. For |
| 491 | * details see struct &drm_crtc_helper_funcs and struct |
| 492 | * &drm_encoder_helper_funcs. |
| 493 | * |
| 494 | * This function is deprecated. New drivers must implement atomic modeset |
| 495 | * support, for which this function is unsuitable. Instead drivers should use |
| 496 | * drm_atomic_helper_set_config(). |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 497 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 498 | * Returns: |
| 499 | * Returns 0 on success, negative errno numbers on failure. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 500 | */ |
| 501 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
| 502 | { |
| 503 | struct drm_device *dev; |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 504 | struct drm_crtc *new_crtc; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 505 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
Jakob Bornecrantz | 4cb72b1 | 2009-08-03 13:43:59 +0100 | [diff] [blame] | 506 | bool mode_changed = false; /* if true do a full mode set */ |
| 507 | 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] | 508 | struct drm_connector *save_connectors, *connector; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 509 | int count = 0, ro, fail = 0; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 510 | const struct drm_crtc_helper_funcs *crtc_funcs; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 511 | struct drm_mode_set save_set; |
Laurent Pinchart | 4a1b071 | 2012-05-17 13:27:21 +0200 | [diff] [blame] | 512 | int ret; |
Keith Packard | bf9dc10 | 2010-11-26 10:45:58 -0800 | [diff] [blame] | 513 | int i; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 514 | |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 515 | DRM_DEBUG_KMS("\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 516 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 517 | BUG_ON(!set); |
| 518 | BUG_ON(!set->crtc); |
| 519 | BUG_ON(!set->crtc->helper_private); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 520 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 521 | /* Enforce sane interface api - has been abused by the fb helper. */ |
| 522 | BUG_ON(!set->mode && set->fb); |
| 523 | BUG_ON(set->fb && set->num_connectors == 0); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 524 | |
| 525 | crtc_funcs = set->crtc->helper_private; |
| 526 | |
Chris Wilson | ede3ff5 | 2011-01-31 11:16:33 +0000 | [diff] [blame] | 527 | if (!set->mode) |
| 528 | set->fb = NULL; |
| 529 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 530 | if (set->fb) { |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 531 | DRM_DEBUG_KMS("[CRTC:%d:%s] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
| 532 | set->crtc->base.id, set->crtc->name, |
| 533 | set->fb->base.id, |
| 534 | (int)set->num_connectors, set->x, set->y); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 535 | } else { |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 536 | DRM_DEBUG_KMS("[CRTC:%d:%s] [NOFB]\n", |
| 537 | set->crtc->base.id, set->crtc->name); |
Thierry Reding | a74591d | 2014-04-29 11:44:39 +0200 | [diff] [blame] | 538 | drm_crtc_helper_disable(set->crtc); |
| 539 | return 0; |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 540 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 541 | |
| 542 | dev = set->crtc->dev; |
| 543 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 544 | drm_warn_on_modeset_not_all_locked(dev); |
| 545 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 546 | /* |
| 547 | * Allocate space for the backup of all (non-pointer) encoder and |
| 548 | * connector data. |
| 549 | */ |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 550 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
| 551 | sizeof(struct drm_encoder), GFP_KERNEL); |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 552 | if (!save_encoders) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 553 | return -ENOMEM; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 554 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 555 | save_connectors = kzalloc(dev->mode_config.num_connector * |
| 556 | sizeof(struct drm_connector), GFP_KERNEL); |
| 557 | if (!save_connectors) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 558 | kfree(save_encoders); |
| 559 | return -ENOMEM; |
| 560 | } |
| 561 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 562 | /* |
| 563 | * Copy data. Note that driver private data is not affected. |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 564 | * Should anything bad happen only the expected state is |
| 565 | * restored, not the drivers personal bookkeeping. |
| 566 | */ |
| 567 | count = 0; |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 568 | drm_for_each_encoder(encoder, dev) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 569 | save_encoders[count++] = *encoder; |
| 570 | } |
| 571 | |
| 572 | count = 0; |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 573 | drm_for_each_connector(connector, dev) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 574 | save_connectors[count++] = *connector; |
| 575 | } |
| 576 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 577 | save_set.crtc = set->crtc; |
| 578 | save_set.mode = &set->crtc->mode; |
| 579 | save_set.x = set->crtc->x; |
| 580 | save_set.y = set->crtc->y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 581 | save_set.fb = set->crtc->primary->fb; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 582 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 583 | /* We should be able to check here if the fb has the same properties |
| 584 | * and then just flip_or_move it */ |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 585 | if (set->crtc->primary->fb != set->fb) { |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 586 | /* 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] | 587 | if (set->crtc->primary->fb == NULL) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 588 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 589 | mode_changed = true; |
Laurent Pinchart | ce83adf | 2013-04-22 01:38:47 +0200 | [diff] [blame] | 590 | } else if (set->fb->pixel_format != |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 591 | set->crtc->primary->fb->pixel_format) { |
Laurent Pinchart | ce83adf | 2013-04-22 01:38:47 +0200 | [diff] [blame] | 592 | mode_changed = true; |
Dave Airlie | 8dff474 | 2010-02-11 14:28:58 +1000 | [diff] [blame] | 593 | } else |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 594 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 598 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 599 | |
Liu Ying | 2deafc7 | 2016-01-14 14:00:10 +0800 | [diff] [blame] | 600 | if (!drm_mode_equal(set->mode, &set->crtc->mode)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 601 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 602 | drm_mode_debug_printmodeline(&set->crtc->mode); |
| 603 | drm_mode_debug_printmodeline(set->mode); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 604 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 605 | } |
| 606 | |
| 607 | /* a) traverse passed in connector list and get encoders for them */ |
| 608 | count = 0; |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 609 | drm_for_each_connector(connector, dev) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 610 | const struct drm_connector_helper_funcs *connector_funcs = |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 611 | connector->helper_private; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 612 | new_encoder = connector->encoder; |
| 613 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 614 | if (set->connectors[ro] == connector) { |
| 615 | new_encoder = connector_funcs->best_encoder(connector); |
| 616 | /* if we can't get an encoder for a connector |
| 617 | we are setting now - then fail */ |
| 618 | if (new_encoder == NULL) |
| 619 | /* don't break so fail path works correct */ |
| 620 | fail = 1; |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 621 | |
| 622 | if (connector->dpms != DRM_MODE_DPMS_ON) { |
| 623 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); |
| 624 | mode_changed = true; |
| 625 | } |
Daniel Vetter | 177cf92 | 2014-04-01 22:14:59 +0200 | [diff] [blame] | 626 | |
| 627 | break; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 628 | } |
| 629 | } |
| 630 | |
| 631 | if (new_encoder != connector->encoder) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 632 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 633 | mode_changed = true; |
Maarten Maathuis | ff846ab | 2009-08-19 00:56:45 +0200 | [diff] [blame] | 634 | /* If the encoder is reused for another connector, then |
| 635 | * the appropriate crtc will be set later. |
| 636 | */ |
Maarten Maathuis | ff6fdbe | 2009-09-01 03:39:04 +0200 | [diff] [blame] | 637 | if (connector->encoder) |
| 638 | connector->encoder->crtc = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 639 | connector->encoder = new_encoder; |
| 640 | } |
| 641 | } |
| 642 | |
| 643 | if (fail) { |
| 644 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 645 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | count = 0; |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 649 | drm_for_each_connector(connector, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 650 | if (!connector->encoder) |
| 651 | continue; |
| 652 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 653 | if (connector->encoder->crtc == set->crtc) |
| 654 | new_crtc = NULL; |
| 655 | else |
| 656 | new_crtc = connector->encoder->crtc; |
| 657 | |
| 658 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 659 | if (set->connectors[ro] == connector) |
| 660 | new_crtc = set->crtc; |
| 661 | } |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 662 | |
| 663 | /* Make sure the new CRTC will work with the encoder */ |
| 664 | if (new_crtc && |
| 665 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
| 666 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 667 | goto fail; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 668 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 669 | if (new_crtc != connector->encoder->crtc) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 670 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 671 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 672 | connector->encoder->crtc = new_crtc; |
| 673 | } |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 674 | if (new_crtc) { |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 675 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d:%s]\n", |
| 676 | connector->base.id, connector->name, |
| 677 | new_crtc->base.id, new_crtc->name); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 678 | } else { |
| 679 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 680 | connector->base.id, connector->name); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 681 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | /* mode_set_base is not a required function */ |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 685 | if (fb_changed && !crtc_funcs->mode_set_base) |
| 686 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 687 | |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 688 | if (mode_changed) { |
Ilija Hadzic | 48b1f5d | 2013-10-29 11:09:45 -0400 | [diff] [blame] | 689 | if (drm_helper_crtc_in_use(set->crtc)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 690 | DRM_DEBUG_KMS("attempting to set mode from" |
| 691 | " userspace\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 692 | drm_mode_debug_printmodeline(set->mode); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 693 | set->crtc->primary->fb = set->fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 694 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 695 | set->x, set->y, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 696 | save_set.fb)) { |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 697 | DRM_ERROR("failed to set mode on [CRTC:%d:%s]\n", |
| 698 | set->crtc->base.id, set->crtc->name); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 699 | set->crtc->primary->fb = save_set.fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 700 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 701 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 702 | } |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 703 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
| 704 | for (i = 0; i < set->num_connectors; i++) { |
| 705 | 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] | 706 | set->connectors[i]->name); |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 707 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
| 708 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 709 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 710 | __drm_helper_disable_unused_functions(dev); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 711 | } else if (fb_changed) { |
Ben Skeggs | 9b1596a | 2009-09-18 10:43:52 +1000 | [diff] [blame] | 712 | set->crtc->x = set->x; |
| 713 | set->crtc->y = set->y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 714 | set->crtc->primary->fb = set->fb; |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 715 | ret = crtc_funcs->mode_set_base(set->crtc, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 716 | set->x, set->y, save_set.fb); |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 717 | if (ret != 0) { |
Ilija Hadzic | fbce406 | 2013-10-29 11:09:43 -0400 | [diff] [blame] | 718 | set->crtc->x = save_set.x; |
| 719 | set->crtc->y = save_set.y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 720 | set->crtc->primary->fb = save_set.fb; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 721 | goto fail; |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 722 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 723 | } |
| 724 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 725 | kfree(save_connectors); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 726 | kfree(save_encoders); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 727 | return 0; |
| 728 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 729 | fail: |
| 730 | /* Restore all previous data. */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 731 | count = 0; |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 732 | drm_for_each_encoder(encoder, dev) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 733 | *encoder = save_encoders[count++]; |
Chris Wilson | e62fb64 | 2009-02-11 16:39:21 +0000 | [diff] [blame] | 734 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 735 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 736 | count = 0; |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 737 | drm_for_each_connector(connector, dev) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 738 | *connector = save_connectors[count++]; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 739 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 740 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 741 | /* Try to restore the config */ |
| 742 | if (mode_changed && |
| 743 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
| 744 | save_set.y, save_set.fb)) |
| 745 | DRM_ERROR("failed to restore config after modeset failure\n"); |
| 746 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 747 | kfree(save_connectors); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 748 | kfree(save_encoders); |
| 749 | return ret; |
| 750 | } |
| 751 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
| 752 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 753 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
| 754 | { |
| 755 | int dpms = DRM_MODE_DPMS_OFF; |
| 756 | struct drm_connector *connector; |
| 757 | struct drm_device *dev = encoder->dev; |
| 758 | |
Daniel Vetter | 9a9f5ce | 2015-07-09 23:44:34 +0200 | [diff] [blame] | 759 | drm_for_each_connector(connector, dev) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 760 | if (connector->encoder == encoder) |
| 761 | if (connector->dpms < dpms) |
| 762 | dpms = connector->dpms; |
| 763 | return dpms; |
| 764 | } |
| 765 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 766 | /* Helper which handles bridge ordering around encoder dpms */ |
| 767 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 768 | { |
| 769 | struct drm_bridge *bridge = encoder->bridge; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 770 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 771 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 772 | if (mode == DRM_MODE_DPMS_ON) |
| 773 | drm_bridge_pre_enable(bridge); |
| 774 | else |
| 775 | drm_bridge_disable(bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 776 | |
| 777 | encoder_funcs = encoder->helper_private; |
| 778 | if (encoder_funcs->dpms) |
| 779 | encoder_funcs->dpms(encoder, mode); |
| 780 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 781 | if (mode == DRM_MODE_DPMS_ON) |
| 782 | drm_bridge_enable(bridge); |
| 783 | else |
| 784 | drm_bridge_post_disable(bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 785 | } |
| 786 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 787 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
| 788 | { |
| 789 | int dpms = DRM_MODE_DPMS_OFF; |
| 790 | struct drm_connector *connector; |
| 791 | struct drm_device *dev = crtc->dev; |
| 792 | |
Daniel Vetter | 9a9f5ce | 2015-07-09 23:44:34 +0200 | [diff] [blame] | 793 | drm_for_each_connector(connector, dev) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 794 | if (connector->encoder && connector->encoder->crtc == crtc) |
| 795 | if (connector->dpms < dpms) |
| 796 | dpms = connector->dpms; |
| 797 | return dpms; |
| 798 | } |
| 799 | |
| 800 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 801 | * drm_helper_connector_dpms() - connector dpms helper implementation |
| 802 | * @connector: affected connector |
| 803 | * @mode: DPMS mode |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 804 | * |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 805 | * The drm_helper_connector_dpms() helper function implements the ->dpms() |
| 806 | * callback of struct &drm_connector_funcs for drivers using the legacy CRTC helpers. |
| 807 | * |
| 808 | * This is the main helper function provided by the CRTC helper framework for |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 809 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 810 | * state for all encoders and CRTCs in the output mesh and calls the ->dpms() |
| 811 | * callbacks provided by the driver in struct &drm_crtc_helper_funcs and struct |
| 812 | * &drm_encoder_helper_funcs appropriately. |
| 813 | * |
| 814 | * This function is deprecated. New drivers must implement atomic modeset |
| 815 | * support, for which this function is unsuitable. Instead drivers should use |
| 816 | * drm_atomic_helper_connector_dpms(). |
Maarten Lankhorst | 9a69a9a | 2015-07-21 11:34:55 +0200 | [diff] [blame] | 817 | * |
| 818 | * Returns: |
| 819 | * Always returns 0. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 820 | */ |
Maarten Lankhorst | 9a69a9a | 2015-07-21 11:34:55 +0200 | [diff] [blame] | 821 | int drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 822 | { |
| 823 | struct drm_encoder *encoder = connector->encoder; |
| 824 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 825 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 826 | |
| 827 | if (mode == connector->dpms) |
Maarten Lankhorst | 9a69a9a | 2015-07-21 11:34:55 +0200 | [diff] [blame] | 828 | return 0; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 829 | |
| 830 | old_dpms = connector->dpms; |
| 831 | connector->dpms = mode; |
| 832 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 833 | if (encoder) |
| 834 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); |
| 835 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 836 | /* from off to on, do crtc then encoder */ |
| 837 | if (mode < old_dpms) { |
| 838 | if (crtc) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 839 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 840 | if (crtc_funcs->dpms) |
| 841 | (*crtc_funcs->dpms) (crtc, |
| 842 | drm_helper_choose_crtc_dpms(crtc)); |
| 843 | } |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 844 | if (encoder) |
| 845 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | /* from on to off, do encoder then crtc */ |
| 849 | if (mode > old_dpms) { |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 850 | if (encoder) |
| 851 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 852 | if (crtc) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 853 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 854 | if (crtc_funcs->dpms) |
| 855 | (*crtc_funcs->dpms) (crtc, |
| 856 | drm_helper_choose_crtc_dpms(crtc)); |
| 857 | } |
| 858 | } |
| 859 | |
Maarten Lankhorst | 9a69a9a | 2015-07-21 11:34:55 +0200 | [diff] [blame] | 860 | return 0; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 861 | } |
| 862 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
| 863 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 864 | /** |
| 865 | * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata |
| 866 | * @fb: drm_framebuffer object to fill out |
| 867 | * @mode_cmd: metadata from the userspace fb creation request |
| 868 | * |
| 869 | * This helper can be used in a drivers fb_create callback to pre-fill the fb's |
| 870 | * metadata fields. |
| 871 | */ |
Daniel Vetter | 9fd9378 | 2014-01-23 22:16:24 +0100 | [diff] [blame] | 872 | void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
Ville Syrjälä | 1eb8345 | 2015-11-11 19:11:29 +0200 | [diff] [blame] | 873 | const struct drm_mode_fb_cmd2 *mode_cmd) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 874 | { |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 875 | int i; |
| 876 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 877 | fb->width = mode_cmd->width; |
| 878 | fb->height = mode_cmd->height; |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 879 | for (i = 0; i < 4; i++) { |
| 880 | fb->pitches[i] = mode_cmd->pitches[i]; |
| 881 | fb->offsets[i] = mode_cmd->offsets[i]; |
Rob Clark | e3eb325 | 2015-02-05 14:41:52 +0000 | [diff] [blame] | 882 | fb->modifier[i] = mode_cmd->modifier[i]; |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 883 | } |
Dave Airlie | 248dbc2 | 2011-11-29 20:02:54 +0000 | [diff] [blame] | 884 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
Jesse Barnes | 308e5bc | 2011-11-14 14:51:28 -0800 | [diff] [blame] | 885 | &fb->bits_per_pixel); |
| 886 | fb->pixel_format = mode_cmd->pixel_format; |
Fabien DESSENNE | d980b18 | 2014-07-01 14:40:42 +0200 | [diff] [blame] | 887 | fb->flags = mode_cmd->flags; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 888 | } |
| 889 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
| 890 | |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 891 | /** |
| 892 | * drm_helper_resume_force_mode - force-restore mode setting configuration |
| 893 | * @dev: drm_device which should be restored |
| 894 | * |
| 895 | * Drivers which use the mode setting helpers can use this function to |
| 896 | * force-restore the mode setting configuration e.g. on resume or when something |
| 897 | * else might have trampled over the hw state (like some overzealous old BIOSen |
| 898 | * tended to do). |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 899 | * |
| 900 | * This helper doesn't provide a error return value since restoring the old |
| 901 | * config should never fail due to resource allocation issues since the driver |
| 902 | * has successfully set the restored configuration already. Hence this should |
| 903 | * boil down to the equivalent of a few dpms on calls, which also don't provide |
| 904 | * an error code. |
| 905 | * |
| 906 | * Drivers where simply restoring an old configuration again might fail (e.g. |
| 907 | * due to slight differences in allocating shared resources when the |
| 908 | * configuration is restored in a different order than when userspace set it up) |
| 909 | * need to use their own restore logic. |
Thierry Reding | 1494276 | 2015-12-02 17:50:04 +0100 | [diff] [blame] | 910 | * |
| 911 | * This function is deprecated. New drivers should implement atomic mode- |
| 912 | * setting and use the atomic suspend/resume helpers. |
| 913 | * |
| 914 | * See also: |
| 915 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 916 | */ |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 917 | void drm_helper_resume_force_mode(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 918 | { |
| 919 | struct drm_crtc *crtc; |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 920 | struct drm_encoder *encoder; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 921 | const struct drm_crtc_helper_funcs *crtc_funcs; |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 922 | int encoder_dpms; |
| 923 | bool ret; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 924 | |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame] | 925 | drm_modeset_lock_all(dev); |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 926 | drm_for_each_crtc(crtc, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 927 | |
| 928 | if (!crtc->enabled) |
| 929 | continue; |
| 930 | |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 931 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 932 | crtc->x, crtc->y, crtc->primary->fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 933 | |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 934 | /* Restoring the old config should never fail! */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 935 | if (ret == false) |
| 936 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 937 | |
| 938 | /* Turn off outputs that were already powered off */ |
| 939 | if (drm_helper_choose_crtc_dpms(crtc)) { |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 940 | drm_for_each_encoder(encoder, dev) { |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 941 | |
| 942 | if(encoder->crtc != crtc) |
| 943 | continue; |
| 944 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 945 | encoder_dpms = drm_helper_choose_encoder_dpms( |
| 946 | encoder); |
| 947 | |
| 948 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 949 | } |
Chris Wilson | 817e631 | 2010-08-06 15:03:31 +0100 | [diff] [blame] | 950 | |
| 951 | crtc_funcs = crtc->helper_private; |
| 952 | if (crtc_funcs->dpms) |
| 953 | (*crtc_funcs->dpms) (crtc, |
| 954 | drm_helper_choose_crtc_dpms(crtc)); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 955 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 956 | } |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 957 | |
Zhao Yakui | af4fcb5 | 2009-07-08 14:13:13 +0800 | [diff] [blame] | 958 | /* disable the unused connectors while restoring the modesetting */ |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 959 | __drm_helper_disable_unused_functions(dev); |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame] | 960 | drm_modeset_unlock_all(dev); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 961 | } |
| 962 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 963 | |
| 964 | /** |
| 965 | * drm_helper_crtc_mode_set - mode_set implementation for atomic plane helpers |
| 966 | * @crtc: DRM CRTC |
| 967 | * @mode: DRM display mode which userspace requested |
| 968 | * @adjusted_mode: DRM display mode adjusted by ->mode_fixup callbacks |
| 969 | * @x: x offset of the CRTC scanout area on the underlying framebuffer |
| 970 | * @y: y offset of the CRTC scanout area on the underlying framebuffer |
| 971 | * @old_fb: previous framebuffer |
| 972 | * |
| 973 | * This function implements a callback useable as the ->mode_set callback |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 974 | * required by the CRTC helpers. Besides the atomic plane helper functions for |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 975 | * the primary plane the driver must also provide the ->mode_set_nofb callback |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 976 | * to set up the CRTC. |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 977 | * |
| 978 | * This is a transitional helper useful for converting drivers to the atomic |
| 979 | * interfaces. |
| 980 | */ |
| 981 | int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, |
| 982 | struct drm_display_mode *adjusted_mode, int x, int y, |
| 983 | struct drm_framebuffer *old_fb) |
| 984 | { |
| 985 | struct drm_crtc_state *crtc_state; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 986 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 987 | int ret; |
| 988 | |
| 989 | if (crtc->funcs->atomic_duplicate_state) |
| 990 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); |
Daniel Vetter | e4f31ad | 2015-07-02 16:33:53 +0200 | [diff] [blame] | 991 | else { |
| 992 | if (!crtc->state) |
| 993 | drm_atomic_helper_crtc_reset(crtc); |
| 994 | |
Daniel Vetter | ce14ec2 | 2015-07-02 15:16:39 +0200 | [diff] [blame] | 995 | crtc_state = drm_atomic_helper_crtc_duplicate_state(crtc); |
Daniel Vetter | e4f31ad | 2015-07-02 16:33:53 +0200 | [diff] [blame] | 996 | } |
Daniel Vetter | ce14ec2 | 2015-07-02 15:16:39 +0200 | [diff] [blame] | 997 | |
| 998 | if (!crtc_state) |
| 999 | return -ENOMEM; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1000 | |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1001 | crtc_state->planes_changed = true; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 1002 | crtc_state->mode_changed = true; |
Daniel Stone | 819364d | 2015-05-26 14:36:48 +0100 | [diff] [blame] | 1003 | ret = drm_atomic_set_mode_for_crtc(crtc_state, mode); |
| 1004 | if (ret) |
| 1005 | goto out; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1006 | drm_mode_copy(&crtc_state->adjusted_mode, adjusted_mode); |
| 1007 | |
| 1008 | if (crtc_funcs->atomic_check) { |
| 1009 | ret = crtc_funcs->atomic_check(crtc, crtc_state); |
Daniel Stone | 9f658b7 | 2015-05-22 13:34:45 +0100 | [diff] [blame] | 1010 | if (ret) |
| 1011 | goto out; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1012 | } |
| 1013 | |
| 1014 | swap(crtc->state, crtc_state); |
| 1015 | |
| 1016 | crtc_funcs->mode_set_nofb(crtc); |
| 1017 | |
Daniel Stone | 9f658b7 | 2015-05-22 13:34:45 +0100 | [diff] [blame] | 1018 | ret = drm_helper_crtc_mode_set_base(crtc, x, y, old_fb); |
| 1019 | |
| 1020 | out: |
Daniel Vetter | ce14ec2 | 2015-07-02 15:16:39 +0200 | [diff] [blame] | 1021 | if (crtc_state) { |
| 1022 | if (crtc->funcs->atomic_destroy_state) |
| 1023 | crtc->funcs->atomic_destroy_state(crtc, crtc_state); |
| 1024 | else |
| 1025 | drm_atomic_helper_crtc_destroy_state(crtc, crtc_state); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1026 | } |
| 1027 | |
Daniel Stone | 9f658b7 | 2015-05-22 13:34:45 +0100 | [diff] [blame] | 1028 | return ret; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1029 | } |
| 1030 | EXPORT_SYMBOL(drm_helper_crtc_mode_set); |
| 1031 | |
| 1032 | /** |
| 1033 | * drm_helper_crtc_mode_set_base - mode_set_base implementation for atomic plane helpers |
| 1034 | * @crtc: DRM CRTC |
| 1035 | * @x: x offset of the CRTC scanout area on the underlying framebuffer |
| 1036 | * @y: y offset of the CRTC scanout area on the underlying framebuffer |
| 1037 | * @old_fb: previous framebuffer |
| 1038 | * |
| 1039 | * This function implements a callback useable as the ->mode_set_base used |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 1040 | * required by the CRTC helpers. The driver must provide the atomic plane helper |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1041 | * functions for the primary plane. |
| 1042 | * |
| 1043 | * This is a transitional helper useful for converting drivers to the atomic |
| 1044 | * interfaces. |
| 1045 | */ |
| 1046 | int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, |
| 1047 | struct drm_framebuffer *old_fb) |
| 1048 | { |
| 1049 | struct drm_plane_state *plane_state; |
| 1050 | struct drm_plane *plane = crtc->primary; |
| 1051 | |
| 1052 | if (plane->funcs->atomic_duplicate_state) |
| 1053 | plane_state = plane->funcs->atomic_duplicate_state(plane); |
| 1054 | else if (plane->state) |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 1055 | plane_state = drm_atomic_helper_plane_duplicate_state(plane); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1056 | else |
| 1057 | plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL); |
| 1058 | if (!plane_state) |
| 1059 | return -ENOMEM; |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 1060 | plane_state->plane = plane; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1061 | |
| 1062 | plane_state->crtc = crtc; |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 1063 | drm_atomic_set_fb_for_plane(plane_state, crtc->primary->fb); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1064 | plane_state->crtc_x = 0; |
| 1065 | plane_state->crtc_y = 0; |
| 1066 | plane_state->crtc_h = crtc->mode.vdisplay; |
| 1067 | plane_state->crtc_w = crtc->mode.hdisplay; |
| 1068 | plane_state->src_x = x << 16; |
| 1069 | plane_state->src_y = y << 16; |
| 1070 | plane_state->src_h = crtc->mode.vdisplay << 16; |
| 1071 | plane_state->src_w = crtc->mode.hdisplay << 16; |
| 1072 | |
| 1073 | return drm_plane_helper_commit(plane, plane_state, old_fb); |
| 1074 | } |
| 1075 | EXPORT_SYMBOL(drm_helper_crtc_mode_set_base); |