Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006-2008 Intel Corporation |
| 3 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> |
| 4 | * |
| 5 | * DRM core CRTC related functions |
| 6 | * |
| 7 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 8 | * documentation for any purpose is hereby granted without fee, provided that |
| 9 | * the above copyright notice appear in all copies and that both that copyright |
| 10 | * notice and this permission notice appear in supporting documentation, and |
| 11 | * that the name of the copyright holders not be used in advertising or |
| 12 | * publicity pertaining to distribution of the software without specific, |
| 13 | * written prior permission. The copyright holders make no representations |
| 14 | * about the suitability of this software for any purpose. It is provided "as |
| 15 | * is" without express or implied warranty. |
| 16 | * |
| 17 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 19 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 23 | * OF THIS SOFTWARE. |
| 24 | * |
| 25 | * Authors: |
| 26 | * Keith Packard |
| 27 | * Eric Anholt <eric@anholt.net> |
| 28 | * Dave Airlie <airlied@linux.ie> |
| 29 | * Jesse Barnes <jesse.barnes@intel.com> |
| 30 | */ |
| 31 | |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 32 | #include <linux/export.h> |
Sam Ravnborg | 0500c04 | 2019-05-26 19:35:35 +0200 | [diff] [blame] | 33 | #include <linux/kernel.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 | |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 36 | #include <drm/drm_atomic.h> |
Sam Ravnborg | 0500c04 | 2019-05-26 19:35:35 +0200 | [diff] [blame] | 37 | #include <drm/drm_atomic_helper.h> |
Daniel Vetter | 72fdb40c | 2018-09-05 15:57:11 +0200 | [diff] [blame] | 38 | #include <drm/drm_atomic_uapi.h> |
Boris Brezillon | ee68c74 | 2019-08-26 17:26:29 +0200 | [diff] [blame] | 39 | #include <drm/drm_bridge.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 40 | #include <drm/drm_crtc.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 41 | #include <drm/drm_crtc_helper.h> |
Sam Ravnborg | 0500c04 | 2019-05-26 19:35:35 +0200 | [diff] [blame] | 42 | #include <drm/drm_drv.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 43 | #include <drm/drm_edid.h> |
Sam Ravnborg | 0500c04 | 2019-05-26 19:35:35 +0200 | [diff] [blame] | 44 | #include <drm/drm_encoder.h> |
| 45 | #include <drm/drm_fb_helper.h> |
| 46 | #include <drm/drm_fourcc.h> |
| 47 | #include <drm/drm_plane_helper.h> |
| 48 | #include <drm/drm_print.h> |
| 49 | #include <drm/drm_vblank.h> |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 50 | |
Benjamin Gaignard | 8dc056e | 2019-11-19 13:58:05 +0100 | [diff] [blame] | 51 | #include "drm_crtc_helper_internal.h" |
| 52 | |
Daniel Vetter | 3150c7d | 2014-11-06 20:53:29 +0100 | [diff] [blame] | 53 | /** |
| 54 | * DOC: overview |
| 55 | * |
| 56 | * The CRTC modeset helper library provides a default set_config implementation |
| 57 | * in drm_crtc_helper_set_config(). Plus a few other convenience functions using |
| 58 | * the same callbacks which drivers can use to e.g. restore the modeset |
| 59 | * configuration on resume with drm_helper_resume_force_mode(). |
| 60 | * |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 61 | * Note that this helper library doesn't track the current power state of CRTCs |
Daniel Vetter | 6806cdf | 2017-01-25 07:26:43 +0100 | [diff] [blame] | 62 | * and encoders. It can call callbacks like &drm_encoder_helper_funcs.dpms even |
| 63 | * though the hardware is already in the desired state. This deficiency has been |
| 64 | * fixed in the atomic helpers. |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 65 | * |
Daniel Vetter | 3150c7d | 2014-11-06 20:53:29 +0100 | [diff] [blame] | 66 | * The driver callbacks are mostly compatible with the atomic modeset helpers, |
| 67 | * except for the handling of the primary plane: Atomic helpers require that the |
| 68 | * primary plane is implemented as a real standalone plane and not directly tied |
| 69 | * to the CRTC state. For easier transition this library provides functions to |
| 70 | * implement the old semantics required by the CRTC helpers using the new plane |
| 71 | * and atomic helper callbacks. |
| 72 | * |
| 73 | * Drivers are strongly urged to convert to the atomic helpers (by way of first |
| 74 | * converting to the plane helpers). New drivers must not use these functions |
| 75 | * but need to implement the atomic interface instead, potentially using the |
| 76 | * atomic helpers for that. |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 77 | * |
| 78 | * These legacy modeset helpers use the same function table structures as |
| 79 | * all other modesetting helpers. See the documentation for struct |
Daniel Vetter | ea0dd85 | 2016-12-29 21:48:26 +0100 | [diff] [blame] | 80 | * &drm_crtc_helper_funcs, &struct drm_encoder_helper_funcs and struct |
Daniel Vetter | 092d01d | 2015-12-04 09:45:44 +0100 | [diff] [blame] | 81 | * &drm_connector_helper_funcs. |
Daniel Vetter | 3150c7d | 2014-11-06 20:53:29 +0100 | [diff] [blame] | 82 | */ |
Daniel Vetter | 92b6f89 | 2013-10-08 17:44:47 +0200 | [diff] [blame] | 83 | |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 84 | /** |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 85 | * drm_helper_encoder_in_use - check if a given encoder is in use |
| 86 | * @encoder: encoder to check |
| 87 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 88 | * Checks whether @encoder is with the current mode setting output configuration |
| 89 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 90 | * the DPMS state is tracked separately. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 91 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 92 | * Returns: |
| 93 | * True if @encoder is used, false otherwise. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 94 | */ |
| 95 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
| 96 | { |
| 97 | struct drm_connector *connector; |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 98 | struct drm_connector_list_iter conn_iter; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 99 | struct drm_device *dev = encoder->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 100 | |
Daniel Vetter | 2b5ab0e | 2019-01-10 11:30:45 +0100 | [diff] [blame] | 101 | WARN_ON(drm_drv_uses_atomic_modeset(dev)); |
| 102 | |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 103 | /* |
| 104 | * We can expect this mutex to be locked if we are not panicking. |
| 105 | * Locking is currently fubar in the panic handler. |
| 106 | */ |
Dave Airlie | 8d4ad9d | 2014-06-05 20:28:59 +1000 | [diff] [blame] | 107 | if (!oops_in_progress) { |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 108 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
Dave Airlie | 8d4ad9d | 2014-06-05 20:28:59 +1000 | [diff] [blame] | 109 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
| 110 | } |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 111 | |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 112 | |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 113 | drm_connector_list_iter_begin(dev, &conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 114 | drm_for_each_connector_iter(connector, &conn_iter) { |
| 115 | if (connector->encoder == encoder) { |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 116 | drm_connector_list_iter_end(&conn_iter); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 117 | return true; |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 118 | } |
| 119 | } |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 120 | drm_connector_list_iter_end(&conn_iter); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 121 | return false; |
| 122 | } |
| 123 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
| 124 | |
| 125 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 126 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
| 127 | * @crtc: CRTC to check |
| 128 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 129 | * Checks whether @crtc is with the current mode setting output configuration |
| 130 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 131 | * the DPMS state is tracked separately. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 132 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 133 | * Returns: |
| 134 | * True if @crtc is used, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 135 | */ |
| 136 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
| 137 | { |
| 138 | struct drm_encoder *encoder; |
| 139 | struct drm_device *dev = crtc->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 140 | |
Daniel Vetter | 2b5ab0e | 2019-01-10 11:30:45 +0100 | [diff] [blame] | 141 | WARN_ON(drm_drv_uses_atomic_modeset(dev)); |
| 142 | |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 143 | /* |
| 144 | * We can expect this mutex to be locked if we are not panicking. |
| 145 | * Locking is currently fubar in the panic handler. |
| 146 | */ |
| 147 | if (!oops_in_progress) |
| 148 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
| 149 | |
Daniel Vetter | e4f6254 | 2015-07-09 23:44:35 +0200 | [diff] [blame] | 150 | drm_for_each_encoder(encoder, dev) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 151 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 152 | return true; |
| 153 | return false; |
| 154 | } |
| 155 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
| 156 | |
Ben Skeggs | 86a1b9d1 | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 157 | static void |
| 158 | drm_encoder_disable(struct drm_encoder *encoder) |
| 159 | { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 160 | const struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
Ben Skeggs | 86a1b9d1 | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 161 | |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 162 | if (!encoder_funcs) |
| 163 | return; |
| 164 | |
Ben Skeggs | 86a1b9d1 | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 165 | if (encoder_funcs->disable) |
| 166 | (*encoder_funcs->disable)(encoder); |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 167 | else if (encoder_funcs->dpms) |
Ben Skeggs | 86a1b9d1 | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 168 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
| 169 | } |
| 170 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 171 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 172 | { |
| 173 | struct drm_encoder *encoder; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 174 | struct drm_crtc *crtc; |
| 175 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 176 | drm_warn_on_modeset_not_all_locked(dev); |
| 177 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 178 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | 92971021 | 2010-12-21 12:47:56 +1000 | [diff] [blame] | 179 | if (!drm_helper_encoder_in_use(encoder)) { |
Ben Skeggs | 86a1b9d1 | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 180 | drm_encoder_disable(encoder); |
Rob Clark | b5e6c1d | 2014-05-24 14:30:10 -0400 | [diff] [blame] | 181 | /* disconnect encoder from any connector */ |
Dave Airlie | 9c552dd | 2009-09-02 14:00:11 +1000 | [diff] [blame] | 182 | encoder->crtc = NULL; |
Dave Airlie | a3a0544 | 2009-08-31 15:16:30 +1000 | [diff] [blame] | 183 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 184 | } |
| 185 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 186 | drm_for_each_crtc(crtc, dev) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 187 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Suraj Upadhyay | 948de842 | 2020-07-02 18:53:32 +0530 | [diff] [blame] | 188 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 189 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 190 | if (!crtc->enabled) { |
Alex Deucher | 5c8d717 | 2010-06-11 17:04:35 -0400 | [diff] [blame] | 191 | if (crtc_funcs->disable) |
| 192 | (*crtc_funcs->disable)(crtc); |
| 193 | else |
| 194 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 195 | crtc->primary->fb = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 196 | } |
| 197 | } |
| 198 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 199 | |
| 200 | /** |
| 201 | * drm_helper_disable_unused_functions - disable unused objects |
| 202 | * @dev: DRM device |
| 203 | * |
| 204 | * This function walks through the entire mode setting configuration of @dev. It |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 205 | * will remove any CRTC links of unused encoders and encoder links of |
| 206 | * disconnected connectors. Then it will disable all unused encoders and CRTCs |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 207 | * either by calling their disable callback if available or by calling their |
| 208 | * dpms callback with DRM_MODE_DPMS_OFF. |
Daniel Vetter | 09859d2 | 2016-01-13 15:31:16 +0100 | [diff] [blame] | 209 | * |
| 210 | * NOTE: |
| 211 | * |
| 212 | * This function is part of the legacy modeset helper library and will cause |
| 213 | * major confusion with atomic drivers. This is because atomic helpers guarantee |
| 214 | * to never call ->disable() hooks on a disabled function, or ->enable() hooks |
| 215 | * on an enabled functions. drm_helper_disable_unused_functions() on the other |
| 216 | * hand throws such guarantees into the wind and calls disable hooks |
| 217 | * unconditionally on unused functions. |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 218 | */ |
| 219 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
| 220 | { |
Daniel Vetter | 2b5ab0e | 2019-01-10 11:30:45 +0100 | [diff] [blame] | 221 | WARN_ON(drm_drv_uses_atomic_modeset(dev)); |
Daniel Vetter | 6605ca0 | 2016-06-08 14:19:18 +0200 | [diff] [blame] | 222 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 223 | drm_modeset_lock_all(dev); |
| 224 | __drm_helper_disable_unused_functions(dev); |
| 225 | drm_modeset_unlock_all(dev); |
| 226 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 227 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
| 228 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 229 | /* |
| 230 | * Check the CRTC we're going to map each output to vs. its current |
| 231 | * CRTC. If they don't match, we have to disable the output and the CRTC |
| 232 | * since the driver will have to re-route things. |
| 233 | */ |
| 234 | static void |
| 235 | drm_crtc_prepare_encoders(struct drm_device *dev) |
| 236 | { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 237 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 238 | struct drm_encoder *encoder; |
| 239 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 240 | drm_for_each_encoder(encoder, dev) { |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 241 | encoder_funcs = encoder->helper_private; |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 242 | if (!encoder_funcs) |
| 243 | continue; |
| 244 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 245 | /* Disable unused encoders */ |
| 246 | if (encoder->crtc == NULL) |
Ben Skeggs | 86a1b9d1 | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 247 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 248 | } |
| 249 | } |
| 250 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 251 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 252 | * drm_crtc_helper_set_mode - internal helper to set a mode |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 253 | * @crtc: CRTC to program |
| 254 | * @mode: mode to use |
Alex Deucher | 4c9287c | 2012-11-09 17:26:32 +0000 | [diff] [blame] | 255 | * @x: horizontal offset into the surface |
| 256 | * @y: vertical offset into the surface |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 257 | * @old_fb: old framebuffer, for cleanup |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 258 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 259 | * 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] | 260 | * to fixup or reject the mode prior to trying to set it. This is an internal |
| 261 | * helper that drivers could e.g. use to update properties that require the |
| 262 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
| 263 | * example for changing whether audio is enabled on a hdmi link or for changing |
| 264 | * panel fitter or dither attributes. It is also called by the |
| 265 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
| 266 | * sequence. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 267 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 268 | * Returns: |
| 269 | * True if the mode was set successfully, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 270 | */ |
| 271 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| 272 | struct drm_display_mode *mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 273 | int x, int y, |
| 274 | struct drm_framebuffer *old_fb) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 275 | { |
| 276 | struct drm_device *dev = crtc->dev; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 277 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 278 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 279 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 280 | int saved_x, saved_y; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 281 | bool saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 282 | struct drm_encoder *encoder; |
| 283 | bool ret = true; |
| 284 | |
Daniel Vetter | 2b5ab0e | 2019-01-10 11:30:45 +0100 | [diff] [blame] | 285 | WARN_ON(drm_drv_uses_atomic_modeset(dev)); |
| 286 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 287 | drm_warn_on_modeset_not_all_locked(dev); |
| 288 | |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 289 | saved_enabled = crtc->enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 290 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 291 | if (!crtc->enabled) |
| 292 | return true; |
| 293 | |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 294 | adjusted_mode = drm_mode_duplicate(dev, mode); |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 295 | if (!adjusted_mode) { |
| 296 | crtc->enabled = saved_enabled; |
Ville Syrjälä | 6bfc56a | 2012-03-13 12:35:48 +0200 | [diff] [blame] | 297 | return false; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 298 | } |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 299 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 300 | saved_mode = crtc->mode; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 301 | saved_hwmode = crtc->hwmode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 302 | saved_x = crtc->x; |
| 303 | saved_y = crtc->y; |
| 304 | |
| 305 | /* Update crtc values up front so the driver can rely on them for mode |
| 306 | * setting. |
| 307 | */ |
| 308 | crtc->mode = *mode; |
| 309 | crtc->x = x; |
| 310 | crtc->y = y; |
| 311 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 312 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
| 313 | * adjust it according to limitations or connector properties, and also |
| 314 | * a chance to reject the mode entirely. |
| 315 | */ |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 316 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 317 | |
| 318 | if (encoder->crtc != crtc) |
| 319 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 320 | |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 321 | encoder_funcs = encoder->helper_private; |
| 322 | if (!encoder_funcs) |
| 323 | continue; |
| 324 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 325 | encoder_funcs = encoder->helper_private; |
Carlos Palminha | 3c5b267 | 2016-02-10 12:15:22 +0000 | [diff] [blame] | 326 | if (encoder_funcs->mode_fixup) { |
| 327 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
| 328 | adjusted_mode))) { |
| 329 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
| 330 | goto done; |
| 331 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 332 | } |
| 333 | } |
| 334 | |
Carlos Palminha | 49f718c | 2016-02-16 14:10:03 +0000 | [diff] [blame] | 335 | if (crtc_funcs->mode_fixup) { |
| 336 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, |
| 337 | adjusted_mode))) { |
| 338 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
| 339 | goto done; |
| 340 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 341 | } |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 342 | DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.id, crtc->name); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 343 | |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 344 | crtc->hwmode = *adjusted_mode; |
| 345 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 346 | /* Prepare the encoders and CRTCs before setting the mode. */ |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 347 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 348 | |
| 349 | if (encoder->crtc != crtc) |
| 350 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 351 | |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 352 | encoder_funcs = encoder->helper_private; |
| 353 | if (!encoder_funcs) |
| 354 | continue; |
| 355 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 356 | /* Disable the encoders as the first thing we do. */ |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 357 | if (encoder_funcs->prepare) |
| 358 | encoder_funcs->prepare(encoder); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 359 | } |
| 360 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 361 | drm_crtc_prepare_encoders(dev); |
| 362 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 363 | crtc_funcs->prepare(crtc); |
| 364 | |
| 365 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
| 366 | * on the DPLL. |
| 367 | */ |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 368 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
| 369 | if (!ret) |
| 370 | goto done; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 371 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 372 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 373 | |
| 374 | if (encoder->crtc != crtc) |
| 375 | continue; |
| 376 | |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 377 | encoder_funcs = encoder->helper_private; |
| 378 | if (!encoder_funcs) |
| 379 | continue; |
| 380 | |
Shayenne Moura | 0e691bc | 2019-01-11 12:45:48 -0200 | [diff] [blame] | 381 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%s]\n", |
| 382 | encoder->base.id, encoder->name, mode->name); |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 383 | if (encoder_funcs->mode_set) |
| 384 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 385 | } |
| 386 | |
| 387 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
| 388 | crtc_funcs->commit(crtc); |
| 389 | |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 390 | drm_for_each_encoder(encoder, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 391 | |
| 392 | if (encoder->crtc != crtc) |
| 393 | continue; |
| 394 | |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 395 | encoder_funcs = encoder->helper_private; |
| 396 | if (!encoder_funcs) |
| 397 | continue; |
| 398 | |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 399 | if (encoder_funcs->commit) |
| 400 | encoder_funcs->commit(encoder); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 401 | } |
| 402 | |
Mario Kleiner | 27641c3f | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 403 | /* Calculate and store various constants which |
| 404 | * are later needed by vblank and swap-completion |
| 405 | * timestamping. They are derived from true hwmode. |
| 406 | */ |
Ville Syrjälä | 545cdd5 | 2013-10-26 17:16:30 +0300 | [diff] [blame] | 407 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
Mario Kleiner | 27641c3f | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 408 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 409 | /* FIXME: add subpixel order */ |
| 410 | done: |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 411 | drm_mode_destroy(dev, adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 412 | if (!ret) { |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 413 | crtc->enabled = saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 414 | crtc->mode = saved_mode; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 415 | crtc->hwmode = saved_hwmode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 416 | crtc->x = saved_x; |
| 417 | crtc->y = saved_y; |
| 418 | } |
| 419 | |
| 420 | return ret; |
| 421 | } |
| 422 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
| 423 | |
Thierry Reding | a74591d | 2014-04-29 11:44:39 +0200 | [diff] [blame] | 424 | static void |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 425 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
| 426 | { |
| 427 | struct drm_device *dev = crtc->dev; |
| 428 | struct drm_connector *connector; |
| 429 | struct drm_encoder *encoder; |
| 430 | |
| 431 | /* Decouple all encoders and their attached connectors from this crtc */ |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 432 | drm_for_each_encoder(encoder, dev) { |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 433 | struct drm_connector_list_iter conn_iter; |
| 434 | |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 435 | if (encoder->crtc != crtc) |
| 436 | continue; |
| 437 | |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 438 | drm_connector_list_iter_begin(dev, &conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 439 | drm_for_each_connector_iter(connector, &conn_iter) { |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 440 | if (connector->encoder != encoder) |
| 441 | continue; |
| 442 | |
| 443 | connector->encoder = NULL; |
Thierry Reding | a6ad623 | 2013-10-02 15:50:06 +0200 | [diff] [blame] | 444 | |
| 445 | /* |
| 446 | * drm_helper_disable_unused_functions() ought to be |
| 447 | * doing this, but since we've decoupled the encoder |
| 448 | * from the connector above, the required connection |
| 449 | * between them is henceforth no longer available. |
| 450 | */ |
| 451 | connector->dpms = DRM_MODE_DPMS_OFF; |
Dave Airlie | 0955c12 | 2016-04-27 11:27:54 +1000 | [diff] [blame] | 452 | |
| 453 | /* we keep a reference while the encoder is bound */ |
Thierry Reding | ad09360 | 2017-02-28 15:46:39 +0100 | [diff] [blame] | 454 | drm_connector_put(connector); |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 455 | } |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 456 | drm_connector_list_iter_end(&conn_iter); |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 457 | } |
| 458 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 459 | __drm_helper_disable_unused_functions(dev); |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 460 | } |
| 461 | |
José Roberto de Souza | a92462d | 2019-09-13 16:28:56 -0700 | [diff] [blame] | 462 | /* |
| 463 | * For connectors that support multiple encoders, either the |
| 464 | * .atomic_best_encoder() or .best_encoder() operation must be implemented. |
| 465 | */ |
| 466 | struct drm_encoder * |
| 467 | drm_connector_get_single_encoder(struct drm_connector *connector) |
| 468 | { |
José Roberto de Souza | 62afb4a | 2019-09-13 16:28:57 -0700 | [diff] [blame] | 469 | struct drm_encoder *encoder; |
| 470 | |
| 471 | WARN_ON(hweight32(connector->possible_encoders) > 1); |
| 472 | drm_connector_for_each_possible_encoder(connector, encoder) |
| 473 | return encoder; |
| 474 | |
| 475 | return NULL; |
José Roberto de Souza | a92462d | 2019-09-13 16:28:56 -0700 | [diff] [blame] | 476 | } |
| 477 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 478 | /** |
| 479 | * drm_crtc_helper_set_config - set a new config from userspace |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 480 | * @set: mode set configuration |
Daniel Vetter | a4eff9a | 2017-03-22 22:50:57 +0100 | [diff] [blame] | 481 | * @ctx: lock acquire context, not used here |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 482 | * |
Daniel Vetter | 6806cdf | 2017-01-25 07:26:43 +0100 | [diff] [blame] | 483 | * The drm_crtc_helper_set_config() helper function implements the of |
| 484 | * &drm_crtc_funcs.set_config callback for drivers using the legacy CRTC |
| 485 | * helpers. |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 486 | * |
| 487 | * It first tries to locate the best encoder for each connector by calling the |
Daniel Vetter | 6806cdf | 2017-01-25 07:26:43 +0100 | [diff] [blame] | 488 | * connector @drm_connector_helper_funcs.best_encoder helper operation. |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 489 | * |
| 490 | * After locating the appropriate encoders, the helper function will call the |
| 491 | * mode_fixup encoder and CRTC helper operations to adjust the requested mode, |
| 492 | * or reject it completely in which case an error will be returned to the |
| 493 | * application. If the new configuration after mode adjustment is identical to |
| 494 | * the current configuration the helper function will return without performing |
| 495 | * any other operation. |
| 496 | * |
| 497 | * If the adjusted mode is identical to the current mode but changes to the |
| 498 | * frame buffer need to be applied, the drm_crtc_helper_set_config() function |
Daniel Vetter | 6806cdf | 2017-01-25 07:26:43 +0100 | [diff] [blame] | 499 | * will call the CRTC &drm_crtc_helper_funcs.mode_set_base helper operation. |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 500 | * |
| 501 | * If the adjusted mode differs from the current mode, or if the |
| 502 | * ->mode_set_base() helper operation is not provided, the helper function |
| 503 | * performs a full mode set sequence by calling the ->prepare(), ->mode_set() |
| 504 | * and ->commit() CRTC and encoder helper operations, in that order. |
| 505 | * Alternatively it can also use the dpms and disable helper operations. For |
Daniel Vetter | ea0dd85 | 2016-12-29 21:48:26 +0100 | [diff] [blame] | 506 | * details see &struct drm_crtc_helper_funcs and struct |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 507 | * &drm_encoder_helper_funcs. |
| 508 | * |
| 509 | * This function is deprecated. New drivers must implement atomic modeset |
| 510 | * support, for which this function is unsuitable. Instead drivers should use |
| 511 | * drm_atomic_helper_set_config(). |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 512 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 513 | * Returns: |
| 514 | * Returns 0 on success, negative errno numbers on failure. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 515 | */ |
Daniel Vetter | a4eff9a | 2017-03-22 22:50:57 +0100 | [diff] [blame] | 516 | int drm_crtc_helper_set_config(struct drm_mode_set *set, |
| 517 | struct drm_modeset_acquire_ctx *ctx) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 518 | { |
| 519 | struct drm_device *dev; |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 520 | struct drm_crtc **save_encoder_crtcs, *new_crtc; |
| 521 | struct drm_encoder **save_connector_encoders, *new_encoder, *encoder; |
Jakob Bornecrantz | 4cb72b1 | 2009-08-03 13:43:59 +0100 | [diff] [blame] | 522 | bool mode_changed = false; /* if true do a full mode set */ |
| 523 | bool fb_changed = false; /* if true and !mode_changed just do a flip */ |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 524 | struct drm_connector *connector; |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 525 | struct drm_connector_list_iter conn_iter; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 526 | int count = 0, ro, fail = 0; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 527 | const struct drm_crtc_helper_funcs *crtc_funcs; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 528 | struct drm_mode_set save_set; |
Laurent Pinchart | 4a1b071 | 2012-05-17 13:27:21 +0200 | [diff] [blame] | 529 | int ret; |
Keith Packard | bf9dc10 | 2010-11-26 10:45:58 -0800 | [diff] [blame] | 530 | int i; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 531 | |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 532 | DRM_DEBUG_KMS("\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 533 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 534 | BUG_ON(!set); |
| 535 | BUG_ON(!set->crtc); |
| 536 | BUG_ON(!set->crtc->helper_private); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 537 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 538 | /* Enforce sane interface api - has been abused by the fb helper. */ |
| 539 | BUG_ON(!set->mode && set->fb); |
| 540 | BUG_ON(set->fb && set->num_connectors == 0); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 541 | |
| 542 | crtc_funcs = set->crtc->helper_private; |
| 543 | |
Daniel Vetter | 2b5ab0e | 2019-01-10 11:30:45 +0100 | [diff] [blame] | 544 | dev = set->crtc->dev; |
| 545 | WARN_ON(drm_drv_uses_atomic_modeset(dev)); |
| 546 | |
Chris Wilson | ede3ff5 | 2011-01-31 11:16:33 +0000 | [diff] [blame] | 547 | if (!set->mode) |
| 548 | set->fb = NULL; |
| 549 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 550 | if (set->fb) { |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 551 | DRM_DEBUG_KMS("[CRTC:%d:%s] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
| 552 | set->crtc->base.id, set->crtc->name, |
| 553 | set->fb->base.id, |
| 554 | (int)set->num_connectors, set->x, set->y); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 555 | } else { |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 556 | DRM_DEBUG_KMS("[CRTC:%d:%s] [NOFB]\n", |
| 557 | set->crtc->base.id, set->crtc->name); |
Thierry Reding | a74591d | 2014-04-29 11:44:39 +0200 | [diff] [blame] | 558 | drm_crtc_helper_disable(set->crtc); |
| 559 | return 0; |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 560 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 561 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 562 | drm_warn_on_modeset_not_all_locked(dev); |
| 563 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 564 | /* |
| 565 | * Allocate space for the backup of all (non-pointer) encoder and |
| 566 | * connector data. |
| 567 | */ |
Harsha Sharma | 4b947b1c | 2017-10-13 13:07:47 +0530 | [diff] [blame] | 568 | save_encoder_crtcs = kcalloc(dev->mode_config.num_encoder, |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 569 | sizeof(struct drm_crtc *), GFP_KERNEL); |
| 570 | if (!save_encoder_crtcs) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 571 | return -ENOMEM; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 572 | |
Harsha Sharma | 4b947b1c | 2017-10-13 13:07:47 +0530 | [diff] [blame] | 573 | save_connector_encoders = kcalloc(dev->mode_config.num_connector, |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 574 | sizeof(struct drm_encoder *), GFP_KERNEL); |
| 575 | if (!save_connector_encoders) { |
| 576 | kfree(save_encoder_crtcs); |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 577 | return -ENOMEM; |
| 578 | } |
| 579 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 580 | /* |
| 581 | * Copy data. Note that driver private data is not affected. |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 582 | * Should anything bad happen only the expected state is |
| 583 | * restored, not the drivers personal bookkeeping. |
| 584 | */ |
| 585 | count = 0; |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 586 | drm_for_each_encoder(encoder, dev) { |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 587 | save_encoder_crtcs[count++] = encoder->crtc; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 588 | } |
| 589 | |
| 590 | count = 0; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 591 | drm_connector_list_iter_begin(dev, &conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 592 | drm_for_each_connector_iter(connector, &conn_iter) |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 593 | save_connector_encoders[count++] = connector->encoder; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 594 | drm_connector_list_iter_end(&conn_iter); |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 595 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 596 | save_set.crtc = set->crtc; |
| 597 | save_set.mode = &set->crtc->mode; |
| 598 | save_set.x = set->crtc->x; |
| 599 | save_set.y = set->crtc->y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 600 | save_set.fb = set->crtc->primary->fb; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 601 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 602 | /* We should be able to check here if the fb has the same properties |
| 603 | * and then just flip_or_move it */ |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 604 | if (set->crtc->primary->fb != set->fb) { |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 605 | /* 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] | 606 | if (set->crtc->primary->fb == NULL) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 607 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 608 | mode_changed = true; |
Ville Syrjälä | dbd4d57 | 2016-11-18 21:53:10 +0200 | [diff] [blame] | 609 | } else if (set->fb->format != set->crtc->primary->fb->format) { |
Laurent Pinchart | ce83adf | 2013-04-22 01:38:47 +0200 | [diff] [blame] | 610 | mode_changed = true; |
Dave Airlie | 8dff474 | 2010-02-11 14:28:58 +1000 | [diff] [blame] | 611 | } else |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 612 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 613 | } |
| 614 | |
| 615 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 616 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 617 | |
Liu Ying | 2deafc7 | 2016-01-14 14:00:10 +0800 | [diff] [blame] | 618 | if (!drm_mode_equal(set->mode, &set->crtc->mode)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 619 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 620 | drm_mode_debug_printmodeline(&set->crtc->mode); |
| 621 | drm_mode_debug_printmodeline(set->mode); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 622 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 623 | } |
| 624 | |
Philipp Zabel | fffc5f5 | 2016-06-02 19:27:51 +0200 | [diff] [blame] | 625 | /* take a reference on all unbound connectors in set, reuse the |
| 626 | * already taken reference for bound connectors |
| 627 | */ |
Dave Airlie | 0955c12 | 2016-04-27 11:27:54 +1000 | [diff] [blame] | 628 | for (ro = 0; ro < set->num_connectors; ro++) { |
Philipp Zabel | fffc5f5 | 2016-06-02 19:27:51 +0200 | [diff] [blame] | 629 | if (set->connectors[ro]->encoder) |
| 630 | continue; |
Thierry Reding | ad09360 | 2017-02-28 15:46:39 +0100 | [diff] [blame] | 631 | drm_connector_get(set->connectors[ro]); |
Dave Airlie | 0955c12 | 2016-04-27 11:27:54 +1000 | [diff] [blame] | 632 | } |
| 633 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 634 | /* a) traverse passed in connector list and get encoders for them */ |
| 635 | count = 0; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 636 | drm_connector_list_iter_begin(dev, &conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 637 | drm_for_each_connector_iter(connector, &conn_iter) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 638 | const struct drm_connector_helper_funcs *connector_funcs = |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 639 | connector->helper_private; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 640 | new_encoder = connector->encoder; |
| 641 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 642 | if (set->connectors[ro] == connector) { |
José Roberto de Souza | a92462d | 2019-09-13 16:28:56 -0700 | [diff] [blame] | 643 | if (connector_funcs->best_encoder) |
| 644 | new_encoder = connector_funcs->best_encoder(connector); |
| 645 | else |
| 646 | new_encoder = drm_connector_get_single_encoder(connector); |
| 647 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 648 | /* if we can't get an encoder for a connector |
| 649 | we are setting now - then fail */ |
| 650 | if (new_encoder == NULL) |
| 651 | /* don't break so fail path works correct */ |
| 652 | fail = 1; |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 653 | |
| 654 | if (connector->dpms != DRM_MODE_DPMS_ON) { |
| 655 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); |
| 656 | mode_changed = true; |
| 657 | } |
Daniel Vetter | 177cf92 | 2014-04-01 22:14:59 +0200 | [diff] [blame] | 658 | |
| 659 | break; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 660 | } |
| 661 | } |
| 662 | |
| 663 | if (new_encoder != connector->encoder) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 664 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 665 | mode_changed = true; |
Maarten Maathuis | ff846ab | 2009-08-19 00:56:45 +0200 | [diff] [blame] | 666 | /* If the encoder is reused for another connector, then |
| 667 | * the appropriate crtc will be set later. |
| 668 | */ |
Maarten Maathuis | ff6fdbe | 2009-09-01 03:39:04 +0200 | [diff] [blame] | 669 | if (connector->encoder) |
| 670 | connector->encoder->crtc = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 671 | connector->encoder = new_encoder; |
| 672 | } |
| 673 | } |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 674 | drm_connector_list_iter_end(&conn_iter); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 675 | |
| 676 | if (fail) { |
| 677 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 678 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 679 | } |
| 680 | |
| 681 | count = 0; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 682 | drm_connector_list_iter_begin(dev, &conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 683 | drm_for_each_connector_iter(connector, &conn_iter) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 684 | if (!connector->encoder) |
| 685 | continue; |
| 686 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 687 | if (connector->encoder->crtc == set->crtc) |
| 688 | new_crtc = NULL; |
| 689 | else |
| 690 | new_crtc = connector->encoder->crtc; |
| 691 | |
| 692 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 693 | if (set->connectors[ro] == connector) |
| 694 | new_crtc = set->crtc; |
| 695 | } |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 696 | |
| 697 | /* Make sure the new CRTC will work with the encoder */ |
| 698 | if (new_crtc && |
| 699 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
| 700 | ret = -EINVAL; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 701 | drm_connector_list_iter_end(&conn_iter); |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 702 | goto fail; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 703 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 704 | if (new_crtc != connector->encoder->crtc) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 705 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 706 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 707 | connector->encoder->crtc = new_crtc; |
| 708 | } |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 709 | if (new_crtc) { |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 710 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d:%s]\n", |
| 711 | connector->base.id, connector->name, |
| 712 | new_crtc->base.id, new_crtc->name); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 713 | } else { |
| 714 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 715 | connector->base.id, connector->name); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 716 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 717 | } |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 718 | drm_connector_list_iter_end(&conn_iter); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 719 | |
| 720 | /* mode_set_base is not a required function */ |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 721 | if (fb_changed && !crtc_funcs->mode_set_base) |
| 722 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 723 | |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 724 | if (mode_changed) { |
Ilija Hadzic | 48b1f5d | 2013-10-29 11:09:45 -0400 | [diff] [blame] | 725 | if (drm_helper_crtc_in_use(set->crtc)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 726 | DRM_DEBUG_KMS("attempting to set mode from" |
| 727 | " userspace\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 728 | drm_mode_debug_printmodeline(set->mode); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 729 | set->crtc->primary->fb = set->fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 730 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 731 | set->x, set->y, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 732 | save_set.fb)) { |
Ville Syrjälä | fa3ab4c | 2015-12-08 18:41:53 +0200 | [diff] [blame] | 733 | DRM_ERROR("failed to set mode on [CRTC:%d:%s]\n", |
| 734 | set->crtc->base.id, set->crtc->name); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 735 | set->crtc->primary->fb = save_set.fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 736 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 737 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 738 | } |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 739 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
| 740 | for (i = 0; i < set->num_connectors; i++) { |
| 741 | 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] | 742 | set->connectors[i]->name); |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 743 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
| 744 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 745 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 746 | __drm_helper_disable_unused_functions(dev); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 747 | } else if (fb_changed) { |
Ben Skeggs | 9b1596a | 2009-09-18 10:43:52 +1000 | [diff] [blame] | 748 | set->crtc->x = set->x; |
| 749 | set->crtc->y = set->y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 750 | set->crtc->primary->fb = set->fb; |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 751 | ret = crtc_funcs->mode_set_base(set->crtc, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 752 | set->x, set->y, save_set.fb); |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 753 | if (ret != 0) { |
Ilija Hadzic | fbce406 | 2013-10-29 11:09:43 -0400 | [diff] [blame] | 754 | set->crtc->x = save_set.x; |
| 755 | set->crtc->y = save_set.y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 756 | set->crtc->primary->fb = save_set.fb; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 757 | goto fail; |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 758 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 759 | } |
| 760 | |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 761 | kfree(save_connector_encoders); |
| 762 | kfree(save_encoder_crtcs); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 763 | return 0; |
| 764 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 765 | fail: |
| 766 | /* Restore all previous data. */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 767 | count = 0; |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 768 | drm_for_each_encoder(encoder, dev) { |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 769 | encoder->crtc = save_encoder_crtcs[count++]; |
Chris Wilson | e62fb64 | 2009-02-11 16:39:21 +0000 | [diff] [blame] | 770 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 771 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 772 | count = 0; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 773 | drm_connector_list_iter_begin(dev, &conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 774 | drm_for_each_connector_iter(connector, &conn_iter) |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 775 | connector->encoder = save_connector_encoders[count++]; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 776 | drm_connector_list_iter_end(&conn_iter); |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 777 | |
Philipp Zabel | fffc5f5 | 2016-06-02 19:27:51 +0200 | [diff] [blame] | 778 | /* after fail drop reference on all unbound connectors in set, let |
| 779 | * bound connectors keep their reference |
| 780 | */ |
Dave Airlie | 0955c12 | 2016-04-27 11:27:54 +1000 | [diff] [blame] | 781 | for (ro = 0; ro < set->num_connectors; ro++) { |
Philipp Zabel | fffc5f5 | 2016-06-02 19:27:51 +0200 | [diff] [blame] | 782 | if (set->connectors[ro]->encoder) |
| 783 | continue; |
Thierry Reding | ad09360 | 2017-02-28 15:46:39 +0100 | [diff] [blame] | 784 | drm_connector_put(set->connectors[ro]); |
Dave Airlie | 0955c12 | 2016-04-27 11:27:54 +1000 | [diff] [blame] | 785 | } |
| 786 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 787 | /* Try to restore the config */ |
| 788 | if (mode_changed && |
| 789 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
| 790 | save_set.y, save_set.fb)) |
| 791 | DRM_ERROR("failed to restore config after modeset failure\n"); |
| 792 | |
Philipp Zabel | 93f5597 | 2016-06-02 19:27:52 +0200 | [diff] [blame] | 793 | kfree(save_connector_encoders); |
| 794 | kfree(save_encoder_crtcs); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 795 | return ret; |
| 796 | } |
| 797 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
| 798 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 799 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
| 800 | { |
| 801 | int dpms = DRM_MODE_DPMS_OFF; |
| 802 | struct drm_connector *connector; |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 803 | struct drm_connector_list_iter conn_iter; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 804 | struct drm_device *dev = encoder->dev; |
| 805 | |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 806 | drm_connector_list_iter_begin(dev, &conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 807 | drm_for_each_connector_iter(connector, &conn_iter) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 808 | if (connector->encoder == encoder) |
| 809 | if (connector->dpms < dpms) |
| 810 | dpms = connector->dpms; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 811 | drm_connector_list_iter_end(&conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 812 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 813 | return dpms; |
| 814 | } |
| 815 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 816 | /* Helper which handles bridge ordering around encoder dpms */ |
| 817 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 818 | { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 819 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 820 | |
Noralf Trønnes | 75229ec | 2016-05-05 15:24:32 +0200 | [diff] [blame] | 821 | encoder_funcs = encoder->helper_private; |
| 822 | if (!encoder_funcs) |
| 823 | return; |
| 824 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 825 | if (encoder_funcs->dpms) |
| 826 | encoder_funcs->dpms(encoder, mode); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 827 | } |
| 828 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 829 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
| 830 | { |
| 831 | int dpms = DRM_MODE_DPMS_OFF; |
| 832 | struct drm_connector *connector; |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 833 | struct drm_connector_list_iter conn_iter; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 834 | struct drm_device *dev = crtc->dev; |
| 835 | |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 836 | drm_connector_list_iter_begin(dev, &conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 837 | drm_for_each_connector_iter(connector, &conn_iter) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 838 | if (connector->encoder && connector->encoder->crtc == crtc) |
| 839 | if (connector->dpms < dpms) |
| 840 | dpms = connector->dpms; |
Thierry Reding | b982dab | 2017-02-28 15:46:43 +0100 | [diff] [blame] | 841 | drm_connector_list_iter_end(&conn_iter); |
Daniel Vetter | c36a325 | 2016-12-15 16:58:43 +0100 | [diff] [blame] | 842 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 843 | return dpms; |
| 844 | } |
| 845 | |
| 846 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 847 | * drm_helper_connector_dpms() - connector dpms helper implementation |
| 848 | * @connector: affected connector |
| 849 | * @mode: DPMS mode |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 850 | * |
Daniel Vetter | 6806cdf | 2017-01-25 07:26:43 +0100 | [diff] [blame] | 851 | * The drm_helper_connector_dpms() helper function implements the |
| 852 | * &drm_connector_funcs.dpms callback for drivers using the legacy CRTC |
| 853 | * helpers. |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 854 | * |
| 855 | * 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] | 856 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
Daniel Vetter | 6806cdf | 2017-01-25 07:26:43 +0100 | [diff] [blame] | 857 | * state for all encoders and CRTCs in the output mesh and calls the |
| 858 | * &drm_crtc_helper_funcs.dpms and &drm_encoder_helper_funcs.dpms callbacks |
| 859 | * provided by the driver. |
Daniel Vetter | 2be9497 | 2015-12-04 09:45:46 +0100 | [diff] [blame] | 860 | * |
| 861 | * This function is deprecated. New drivers must implement atomic modeset |
Daniel Vetter | 144a799 | 2017-07-25 14:02:04 +0200 | [diff] [blame] | 862 | * support, where DPMS is handled in the DRM core. |
Maarten Lankhorst | 9a69a9a | 2015-07-21 11:34:55 +0200 | [diff] [blame] | 863 | * |
| 864 | * Returns: |
| 865 | * Always returns 0. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 866 | */ |
Maarten Lankhorst | 9a69a9a | 2015-07-21 11:34:55 +0200 | [diff] [blame] | 867 | int drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 868 | { |
| 869 | struct drm_encoder *encoder = connector->encoder; |
| 870 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 871 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 872 | |
Daniel Vetter | 2b5ab0e | 2019-01-10 11:30:45 +0100 | [diff] [blame] | 873 | WARN_ON(drm_drv_uses_atomic_modeset(connector->dev)); |
| 874 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 875 | if (mode == connector->dpms) |
Maarten Lankhorst | 9a69a9a | 2015-07-21 11:34:55 +0200 | [diff] [blame] | 876 | return 0; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 877 | |
| 878 | old_dpms = connector->dpms; |
| 879 | connector->dpms = mode; |
| 880 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 881 | if (encoder) |
| 882 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); |
| 883 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 884 | /* from off to on, do crtc then encoder */ |
| 885 | if (mode < old_dpms) { |
| 886 | if (crtc) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 887 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Suraj Upadhyay | 948de842 | 2020-07-02 18:53:32 +0530 | [diff] [blame] | 888 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 889 | if (crtc_funcs->dpms) |
| 890 | (*crtc_funcs->dpms) (crtc, |
| 891 | drm_helper_choose_crtc_dpms(crtc)); |
| 892 | } |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 893 | if (encoder) |
| 894 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 895 | } |
| 896 | |
| 897 | /* from on to off, do encoder then crtc */ |
| 898 | if (mode > old_dpms) { |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 899 | if (encoder) |
| 900 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 901 | if (crtc) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 902 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Suraj Upadhyay | 948de842 | 2020-07-02 18:53:32 +0530 | [diff] [blame] | 903 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 904 | if (crtc_funcs->dpms) |
| 905 | (*crtc_funcs->dpms) (crtc, |
| 906 | drm_helper_choose_crtc_dpms(crtc)); |
| 907 | } |
| 908 | } |
| 909 | |
Maarten Lankhorst | 9a69a9a | 2015-07-21 11:34:55 +0200 | [diff] [blame] | 910 | return 0; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 911 | } |
| 912 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
| 913 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 914 | /** |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 915 | * drm_helper_resume_force_mode - force-restore mode setting configuration |
| 916 | * @dev: drm_device which should be restored |
| 917 | * |
| 918 | * Drivers which use the mode setting helpers can use this function to |
| 919 | * force-restore the mode setting configuration e.g. on resume or when something |
| 920 | * else might have trampled over the hw state (like some overzealous old BIOSen |
| 921 | * tended to do). |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 922 | * |
| 923 | * This helper doesn't provide a error return value since restoring the old |
| 924 | * config should never fail due to resource allocation issues since the driver |
| 925 | * has successfully set the restored configuration already. Hence this should |
| 926 | * boil down to the equivalent of a few dpms on calls, which also don't provide |
| 927 | * an error code. |
| 928 | * |
| 929 | * Drivers where simply restoring an old configuration again might fail (e.g. |
| 930 | * due to slight differences in allocating shared resources when the |
| 931 | * configuration is restored in a different order than when userspace set it up) |
| 932 | * need to use their own restore logic. |
Thierry Reding | 1494276 | 2015-12-02 17:50:04 +0100 | [diff] [blame] | 933 | * |
| 934 | * This function is deprecated. New drivers should implement atomic mode- |
| 935 | * setting and use the atomic suspend/resume helpers. |
| 936 | * |
| 937 | * See also: |
| 938 | * drm_atomic_helper_suspend(), drm_atomic_helper_resume() |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 939 | */ |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 940 | void drm_helper_resume_force_mode(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 941 | { |
| 942 | struct drm_crtc *crtc; |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 943 | struct drm_encoder *encoder; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 944 | const struct drm_crtc_helper_funcs *crtc_funcs; |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 945 | int encoder_dpms; |
| 946 | bool ret; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 947 | |
Daniel Vetter | 2b5ab0e | 2019-01-10 11:30:45 +0100 | [diff] [blame] | 948 | WARN_ON(drm_drv_uses_atomic_modeset(dev)); |
| 949 | |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame] | 950 | drm_modeset_lock_all(dev); |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 951 | drm_for_each_crtc(crtc, dev) { |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 952 | |
| 953 | if (!crtc->enabled) |
| 954 | continue; |
| 955 | |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 956 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 957 | crtc->x, crtc->y, crtc->primary->fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 958 | |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 959 | /* Restoring the old config should never fail! */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 960 | if (ret == false) |
| 961 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 962 | |
| 963 | /* Turn off outputs that were already powered off */ |
| 964 | if (drm_helper_choose_crtc_dpms(crtc)) { |
Daniel Vetter | 6295d60 | 2015-07-09 23:44:25 +0200 | [diff] [blame] | 965 | drm_for_each_encoder(encoder, dev) { |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 966 | |
| 967 | if(encoder->crtc != crtc) |
| 968 | continue; |
| 969 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 970 | encoder_dpms = drm_helper_choose_encoder_dpms( |
| 971 | encoder); |
| 972 | |
| 973 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 974 | } |
Chris Wilson | 817e631 | 2010-08-06 15:03:31 +0100 | [diff] [blame] | 975 | |
| 976 | crtc_funcs = crtc->helper_private; |
| 977 | if (crtc_funcs->dpms) |
| 978 | (*crtc_funcs->dpms) (crtc, |
| 979 | drm_helper_choose_crtc_dpms(crtc)); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 980 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 981 | } |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 982 | |
Zhao Yakui | af4fcb5 | 2009-07-08 14:13:13 +0800 | [diff] [blame] | 983 | /* disable the unused connectors while restoring the modesetting */ |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 984 | __drm_helper_disable_unused_functions(dev); |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame] | 985 | drm_modeset_unlock_all(dev); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 986 | } |
| 987 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
Daniel Vetter | c2d88e0 | 2018-12-17 20:43:00 +0100 | [diff] [blame] | 988 | |
| 989 | /** |
| 990 | * drm_helper_force_disable_all - Forcibly turn off all enabled CRTCs |
| 991 | * @dev: DRM device whose CRTCs to turn off |
| 992 | * |
| 993 | * Drivers may want to call this on unload to ensure that all displays are |
| 994 | * unlit and the GPU is in a consistent, low power state. Takes modeset locks. |
| 995 | * |
| 996 | * Note: This should only be used by non-atomic legacy drivers. For an atomic |
| 997 | * version look at drm_atomic_helper_shutdown(). |
| 998 | * |
| 999 | * Returns: |
| 1000 | * Zero on success, error code on failure. |
| 1001 | */ |
| 1002 | int drm_helper_force_disable_all(struct drm_device *dev) |
| 1003 | { |
| 1004 | struct drm_crtc *crtc; |
| 1005 | int ret = 0; |
| 1006 | |
| 1007 | drm_modeset_lock_all(dev); |
| 1008 | drm_for_each_crtc(crtc, dev) |
| 1009 | if (crtc->enabled) { |
| 1010 | struct drm_mode_set set = { |
| 1011 | .crtc = crtc, |
| 1012 | }; |
| 1013 | |
| 1014 | ret = drm_mode_set_config_internal(&set); |
| 1015 | if (ret) |
| 1016 | goto out; |
| 1017 | } |
| 1018 | out: |
| 1019 | drm_modeset_unlock_all(dev); |
| 1020 | return ret; |
| 1021 | } |
| 1022 | EXPORT_SYMBOL(drm_helper_force_disable_all); |