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 | * |
| 54 | * The driver callbacks are mostly compatible with the atomic modeset helpers, |
| 55 | * except for the handling of the primary plane: Atomic helpers require that the |
| 56 | * primary plane is implemented as a real standalone plane and not directly tied |
| 57 | * to the CRTC state. For easier transition this library provides functions to |
| 58 | * implement the old semantics required by the CRTC helpers using the new plane |
| 59 | * and atomic helper callbacks. |
| 60 | * |
| 61 | * Drivers are strongly urged to convert to the atomic helpers (by way of first |
| 62 | * converting to the plane helpers). New drivers must not use these functions |
| 63 | * but need to implement the atomic interface instead, potentially using the |
| 64 | * atomic helpers for that. |
| 65 | */ |
Daniel Vetter | 92b6f89 | 2013-10-08 17:44:47 +0200 | [diff] [blame] | 66 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
| 67 | MODULE_DESCRIPTION("DRM KMS helper"); |
| 68 | MODULE_LICENSE("GPL and additional rights"); |
| 69 | |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 70 | /** |
| 71 | * drm_helper_move_panel_connectors_to_head() - move panels to the front in the |
| 72 | * connector list |
| 73 | * @dev: drm device to operate on |
| 74 | * |
| 75 | * Some userspace presumes that the first connected connector is the main |
| 76 | * display, where it's supposed to display e.g. the login screen. For |
| 77 | * laptops, this should be the main panel. Use this function to sort all |
| 78 | * (eDP/LVDS) panels to the front of the connector list, instead of |
| 79 | * painstakingly trying to initialize them in the right order. |
| 80 | */ |
Daniel Vetter | cfc1a06 | 2012-10-27 15:52:04 +0200 | [diff] [blame] | 81 | void drm_helper_move_panel_connectors_to_head(struct drm_device *dev) |
| 82 | { |
| 83 | struct drm_connector *connector, *tmp; |
| 84 | struct list_head panel_list; |
| 85 | |
| 86 | INIT_LIST_HEAD(&panel_list); |
| 87 | |
| 88 | list_for_each_entry_safe(connector, tmp, |
| 89 | &dev->mode_config.connector_list, head) { |
| 90 | if (connector->connector_type == DRM_MODE_CONNECTOR_LVDS || |
| 91 | connector->connector_type == DRM_MODE_CONNECTOR_eDP) |
| 92 | list_move_tail(&connector->head, &panel_list); |
| 93 | } |
| 94 | |
| 95 | list_splice(&panel_list, &dev->mode_config.connector_list); |
| 96 | } |
| 97 | EXPORT_SYMBOL(drm_helper_move_panel_connectors_to_head); |
| 98 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 99 | /** |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 100 | * drm_helper_encoder_in_use - check if a given encoder is in use |
| 101 | * @encoder: encoder to check |
| 102 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 103 | * Checks whether @encoder is with the current mode setting output configuration |
| 104 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 105 | * the DPMS state is tracked separately. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 106 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 107 | * Returns: |
| 108 | * True if @encoder is used, false otherwise. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 109 | */ |
| 110 | bool drm_helper_encoder_in_use(struct drm_encoder *encoder) |
| 111 | { |
| 112 | struct drm_connector *connector; |
| 113 | struct drm_device *dev = encoder->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 114 | |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 115 | /* |
| 116 | * We can expect this mutex to be locked if we are not panicking. |
| 117 | * Locking is currently fubar in the panic handler. |
| 118 | */ |
Dave Airlie | 8d4ad9d | 2014-06-05 20:28:59 +1000 | [diff] [blame] | 119 | if (!oops_in_progress) { |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 120 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
Dave Airlie | 8d4ad9d | 2014-06-05 20:28:59 +1000 | [diff] [blame] | 121 | WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex)); |
| 122 | } |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 123 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 124 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 125 | if (connector->encoder == encoder) |
| 126 | return true; |
| 127 | return false; |
| 128 | } |
| 129 | EXPORT_SYMBOL(drm_helper_encoder_in_use); |
| 130 | |
| 131 | /** |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 132 | * drm_helper_crtc_in_use - check if a given CRTC is in a mode_config |
| 133 | * @crtc: CRTC to check |
| 134 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 135 | * Checks whether @crtc is with the current mode setting output configuration |
| 136 | * in use by any connector. This doesn't mean that it is actually enabled since |
| 137 | * the DPMS state is tracked separately. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 138 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 139 | * Returns: |
| 140 | * True if @crtc is used, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 141 | */ |
| 142 | bool drm_helper_crtc_in_use(struct drm_crtc *crtc) |
| 143 | { |
| 144 | struct drm_encoder *encoder; |
| 145 | struct drm_device *dev = crtc->dev; |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 146 | |
Sergei Antonov | ba6f582 | 2014-05-12 00:30:48 +0200 | [diff] [blame] | 147 | /* |
| 148 | * We can expect this mutex to be locked if we are not panicking. |
| 149 | * Locking is currently fubar in the panic handler. |
| 150 | */ |
| 151 | if (!oops_in_progress) |
| 152 | WARN_ON(!mutex_is_locked(&dev->mode_config.mutex)); |
| 153 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 154 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 155 | if (encoder->crtc == crtc && drm_helper_encoder_in_use(encoder)) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 156 | return true; |
| 157 | return false; |
| 158 | } |
| 159 | EXPORT_SYMBOL(drm_helper_crtc_in_use); |
| 160 | |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 161 | static void |
| 162 | drm_encoder_disable(struct drm_encoder *encoder) |
| 163 | { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 164 | const struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 165 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 166 | drm_bridge_disable(encoder->bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 167 | |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 168 | if (encoder_funcs->disable) |
| 169 | (*encoder_funcs->disable)(encoder); |
| 170 | else |
| 171 | (*encoder_funcs->dpms)(encoder, DRM_MODE_DPMS_OFF); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 172 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 173 | drm_bridge_post_disable(encoder->bridge); |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 174 | } |
| 175 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 176 | static void __drm_helper_disable_unused_functions(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 177 | { |
| 178 | struct drm_encoder *encoder; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 179 | struct drm_crtc *crtc; |
| 180 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 181 | drm_warn_on_modeset_not_all_locked(dev); |
| 182 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 183 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
Dave Airlie | 92971021 | 2010-12-21 12:47:56 +1000 | [diff] [blame] | 184 | if (!drm_helper_encoder_in_use(encoder)) { |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 185 | drm_encoder_disable(encoder); |
Rob Clark | b5e6c1d | 2014-05-24 14:30:10 -0400 | [diff] [blame] | 186 | /* disconnect encoder from any connector */ |
Dave Airlie | 9c552dd | 2009-09-02 14:00:11 +1000 | [diff] [blame] | 187 | encoder->crtc = NULL; |
Dave Airlie | a3a0544 | 2009-08-31 15:16:30 +1000 | [diff] [blame] | 188 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 192 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 193 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
| 194 | if (!crtc->enabled) { |
Alex Deucher | 5c8d717 | 2010-06-11 17:04:35 -0400 | [diff] [blame] | 195 | if (crtc_funcs->disable) |
| 196 | (*crtc_funcs->disable)(crtc); |
| 197 | else |
| 198 | (*crtc_funcs->dpms)(crtc, DRM_MODE_DPMS_OFF); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 199 | crtc->primary->fb = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 200 | } |
| 201 | } |
| 202 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 203 | |
| 204 | /** |
| 205 | * drm_helper_disable_unused_functions - disable unused objects |
| 206 | * @dev: DRM device |
| 207 | * |
| 208 | * This function walks through the entire mode setting configuration of @dev. It |
| 209 | * will remove any crtc links of unused encoders and encoder links of |
| 210 | * disconnected connectors. Then it will disable all unused encoders and crtcs |
| 211 | * either by calling their disable callback if available or by calling their |
| 212 | * dpms callback with DRM_MODE_DPMS_OFF. |
| 213 | */ |
| 214 | void drm_helper_disable_unused_functions(struct drm_device *dev) |
| 215 | { |
| 216 | drm_modeset_lock_all(dev); |
| 217 | __drm_helper_disable_unused_functions(dev); |
| 218 | drm_modeset_unlock_all(dev); |
| 219 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 220 | EXPORT_SYMBOL(drm_helper_disable_unused_functions); |
| 221 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 222 | /* |
| 223 | * Check the CRTC we're going to map each output to vs. its current |
| 224 | * CRTC. If they don't match, we have to disable the output and the CRTC |
| 225 | * since the driver will have to re-route things. |
| 226 | */ |
| 227 | static void |
| 228 | drm_crtc_prepare_encoders(struct drm_device *dev) |
| 229 | { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 230 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 231 | struct drm_encoder *encoder; |
| 232 | |
| 233 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 234 | encoder_funcs = encoder->helper_private; |
| 235 | /* Disable unused encoders */ |
| 236 | if (encoder->crtc == NULL) |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 237 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 238 | /* Disable encoders whose CRTC is about to change */ |
| 239 | if (encoder_funcs->get_crtc && |
| 240 | encoder->crtc != (*encoder_funcs->get_crtc)(encoder)) |
Ben Skeggs | 86a1b9d | 2010-07-01 16:49:57 +1000 | [diff] [blame] | 241 | drm_encoder_disable(encoder); |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 242 | } |
| 243 | } |
| 244 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 245 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 246 | * drm_crtc_helper_set_mode - internal helper to set a mode |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 247 | * @crtc: CRTC to program |
| 248 | * @mode: mode to use |
Alex Deucher | 4c9287c | 2012-11-09 17:26:32 +0000 | [diff] [blame] | 249 | * @x: horizontal offset into the surface |
| 250 | * @y: vertical offset into the surface |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 251 | * @old_fb: old framebuffer, for cleanup |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 252 | * |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 253 | * 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] | 254 | * to fixup or reject the mode prior to trying to set it. This is an internal |
| 255 | * helper that drivers could e.g. use to update properties that require the |
| 256 | * entire output pipe to be disabled and re-enabled in a new configuration. For |
| 257 | * example for changing whether audio is enabled on a hdmi link or for changing |
| 258 | * panel fitter or dither attributes. It is also called by the |
| 259 | * drm_crtc_helper_set_config() helper function to drive the mode setting |
| 260 | * sequence. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 261 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 262 | * Returns: |
| 263 | * True if the mode was set successfully, false otherwise. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 264 | */ |
| 265 | bool drm_crtc_helper_set_mode(struct drm_crtc *crtc, |
| 266 | struct drm_display_mode *mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 267 | int x, int y, |
| 268 | struct drm_framebuffer *old_fb) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 269 | { |
| 270 | struct drm_device *dev = crtc->dev; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 271 | struct drm_display_mode *adjusted_mode, saved_mode, saved_hwmode; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 272 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
| 273 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 274 | int saved_x, saved_y; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 275 | bool saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 276 | struct drm_encoder *encoder; |
| 277 | bool ret = true; |
| 278 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 279 | drm_warn_on_modeset_not_all_locked(dev); |
| 280 | |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 281 | saved_enabled = crtc->enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 282 | crtc->enabled = drm_helper_crtc_in_use(crtc); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 283 | if (!crtc->enabled) |
| 284 | return true; |
| 285 | |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 286 | adjusted_mode = drm_mode_duplicate(dev, mode); |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 287 | if (!adjusted_mode) { |
| 288 | crtc->enabled = saved_enabled; |
Ville Syrjälä | 6bfc56a | 2012-03-13 12:35:48 +0200 | [diff] [blame] | 289 | return false; |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 290 | } |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 291 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 292 | saved_mode = crtc->mode; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 293 | saved_hwmode = crtc->hwmode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 294 | saved_x = crtc->x; |
| 295 | saved_y = crtc->y; |
| 296 | |
| 297 | /* Update crtc values up front so the driver can rely on them for mode |
| 298 | * setting. |
| 299 | */ |
| 300 | crtc->mode = *mode; |
| 301 | crtc->x = x; |
| 302 | crtc->y = y; |
| 303 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 304 | /* Pass our mode to the connectors and the CRTC to give them a chance to |
| 305 | * adjust it according to limitations or connector properties, and also |
| 306 | * a chance to reject the mode entirely. |
| 307 | */ |
| 308 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 309 | |
| 310 | if (encoder->crtc != crtc) |
| 311 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 312 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 313 | ret = drm_bridge_mode_fixup(encoder->bridge, |
| 314 | mode, adjusted_mode); |
| 315 | if (!ret) { |
| 316 | DRM_DEBUG_KMS("Bridge fixup failed\n"); |
| 317 | goto done; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 318 | } |
| 319 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 320 | encoder_funcs = encoder->helper_private; |
| 321 | if (!(ret = encoder_funcs->mode_fixup(encoder, mode, |
| 322 | adjusted_mode))) { |
Adam Jackson | 836e53d | 2011-10-10 16:21:27 -0400 | [diff] [blame] | 323 | DRM_DEBUG_KMS("Encoder fixup failed\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 324 | goto done; |
| 325 | } |
| 326 | } |
| 327 | |
| 328 | if (!(ret = crtc_funcs->mode_fixup(crtc, mode, adjusted_mode))) { |
Adam Jackson | 836e53d | 2011-10-10 16:21:27 -0400 | [diff] [blame] | 329 | DRM_DEBUG_KMS("CRTC fixup failed\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 330 | goto done; |
| 331 | } |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 332 | DRM_DEBUG_KMS("[CRTC:%d]\n", crtc->base.id); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 333 | |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 334 | crtc->hwmode = *adjusted_mode; |
| 335 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 336 | /* Prepare the encoders and CRTCs before setting the mode. */ |
| 337 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 338 | |
| 339 | if (encoder->crtc != crtc) |
| 340 | continue; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 341 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 342 | drm_bridge_disable(encoder->bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 343 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 344 | encoder_funcs = encoder->helper_private; |
| 345 | /* Disable the encoders as the first thing we do. */ |
| 346 | encoder_funcs->prepare(encoder); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 347 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 348 | drm_bridge_post_disable(encoder->bridge); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 349 | } |
| 350 | |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 351 | drm_crtc_prepare_encoders(dev); |
| 352 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 353 | crtc_funcs->prepare(crtc); |
| 354 | |
| 355 | /* Set up the DPLL and any encoders state that needs to adjust or depend |
| 356 | * on the DPLL. |
| 357 | */ |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 358 | ret = !crtc_funcs->mode_set(crtc, mode, adjusted_mode, x, y, old_fb); |
| 359 | if (!ret) |
| 360 | goto done; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 361 | |
| 362 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 363 | |
| 364 | if (encoder->crtc != crtc) |
| 365 | continue; |
| 366 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 367 | DRM_DEBUG_KMS("[ENCODER:%d:%s] set [MODE:%d:%s]\n", |
Jani Nikula | 83a8cfd | 2014-06-03 14:56:22 +0300 | [diff] [blame] | 368 | encoder->base.id, encoder->name, |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 369 | mode->base.id, mode->name); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 370 | encoder_funcs = encoder->helper_private; |
| 371 | encoder_funcs->mode_set(encoder, mode, adjusted_mode); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 372 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 373 | drm_bridge_mode_set(encoder->bridge, mode, adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | /* Now enable the clocks, plane, pipe, and connectors that we set up. */ |
| 377 | crtc_funcs->commit(crtc); |
| 378 | |
| 379 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 380 | |
| 381 | if (encoder->crtc != crtc) |
| 382 | continue; |
| 383 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 384 | drm_bridge_pre_enable(encoder->bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 385 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 386 | encoder_funcs = encoder->helper_private; |
| 387 | encoder_funcs->commit(encoder); |
| 388 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 389 | drm_bridge_enable(encoder->bridge); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 390 | } |
| 391 | |
Mario Kleiner | 27641c3 | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 392 | /* Calculate and store various constants which |
| 393 | * are later needed by vblank and swap-completion |
| 394 | * timestamping. They are derived from true hwmode. |
| 395 | */ |
Ville Syrjälä | 545cdd5 | 2013-10-26 17:16:30 +0300 | [diff] [blame] | 396 | drm_calc_timestamping_constants(crtc, &crtc->hwmode); |
Mario Kleiner | 27641c3 | 2010-10-23 04:20:23 +0200 | [diff] [blame] | 397 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 398 | /* FIXME: add subpixel order */ |
| 399 | done: |
Chris Wilson | 021a845 | 2011-01-28 11:31:56 +0000 | [diff] [blame] | 400 | drm_mode_destroy(dev, adjusted_mode); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 401 | if (!ret) { |
Ilija Hadzic | 7e99acd | 2013-10-29 11:09:44 -0400 | [diff] [blame] | 402 | crtc->enabled = saved_enabled; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 403 | crtc->mode = saved_mode; |
Daniel Stone | 5a27528 | 2015-03-19 04:33:03 +0000 | [diff] [blame] | 404 | crtc->hwmode = saved_hwmode; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 405 | crtc->x = saved_x; |
| 406 | crtc->y = saved_y; |
| 407 | } |
| 408 | |
| 409 | return ret; |
| 410 | } |
| 411 | EXPORT_SYMBOL(drm_crtc_helper_set_mode); |
| 412 | |
Thierry Reding | a74591d | 2014-04-29 11:44:39 +0200 | [diff] [blame] | 413 | static void |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 414 | drm_crtc_helper_disable(struct drm_crtc *crtc) |
| 415 | { |
| 416 | struct drm_device *dev = crtc->dev; |
| 417 | struct drm_connector *connector; |
| 418 | struct drm_encoder *encoder; |
| 419 | |
| 420 | /* Decouple all encoders and their attached connectors from this crtc */ |
| 421 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 422 | if (encoder->crtc != crtc) |
| 423 | continue; |
| 424 | |
| 425 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 426 | if (connector->encoder != encoder) |
| 427 | continue; |
| 428 | |
| 429 | connector->encoder = NULL; |
Thierry Reding | a6ad623 | 2013-10-02 15:50:06 +0200 | [diff] [blame] | 430 | |
| 431 | /* |
| 432 | * drm_helper_disable_unused_functions() ought to be |
| 433 | * doing this, but since we've decoupled the encoder |
| 434 | * from the connector above, the required connection |
| 435 | * between them is henceforth no longer available. |
| 436 | */ |
| 437 | connector->dpms = DRM_MODE_DPMS_OFF; |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 438 | } |
| 439 | } |
| 440 | |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 441 | __drm_helper_disable_unused_functions(dev); |
Chris Wilson | 6eebd6b | 2011-11-28 21:10:05 +0000 | [diff] [blame] | 442 | } |
| 443 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 444 | /** |
| 445 | * drm_crtc_helper_set_config - set a new config from userspace |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 446 | * @set: mode set configuration |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 447 | * |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 448 | * Setup a new configuration, provided by the upper layers (either an ioctl call |
Masanari Iida | e227867 | 2014-02-18 22:54:36 +0900 | [diff] [blame] | 449 | * from userspace or internally e.g. from the fbdev support code) in @set, and |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 450 | * enable it. This is the main helper functions for drivers that implement |
| 451 | * kernel mode setting with the crtc helper functions and the assorted |
| 452 | * ->prepare(), ->modeset() and ->commit() helper callbacks. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 453 | * |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 454 | * Returns: |
| 455 | * Returns 0 on success, negative errno numbers on failure. |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 456 | */ |
| 457 | int drm_crtc_helper_set_config(struct drm_mode_set *set) |
| 458 | { |
| 459 | struct drm_device *dev; |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 460 | struct drm_crtc *new_crtc; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 461 | struct drm_encoder *save_encoders, *new_encoder, *encoder; |
Jakob Bornecrantz | 4cb72b1 | 2009-08-03 13:43:59 +0100 | [diff] [blame] | 462 | bool mode_changed = false; /* if true do a full mode set */ |
| 463 | 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] | 464 | struct drm_connector *save_connectors, *connector; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 465 | int count = 0, ro, fail = 0; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 466 | const struct drm_crtc_helper_funcs *crtc_funcs; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 467 | struct drm_mode_set save_set; |
Laurent Pinchart | 4a1b071 | 2012-05-17 13:27:21 +0200 | [diff] [blame] | 468 | int ret; |
Keith Packard | bf9dc10 | 2010-11-26 10:45:58 -0800 | [diff] [blame] | 469 | int i; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 470 | |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 471 | DRM_DEBUG_KMS("\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 472 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 473 | BUG_ON(!set); |
| 474 | BUG_ON(!set->crtc); |
| 475 | BUG_ON(!set->crtc->helper_private); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 476 | |
Daniel Vetter | e58de88 | 2013-06-15 00:13:11 +0200 | [diff] [blame] | 477 | /* Enforce sane interface api - has been abused by the fb helper. */ |
| 478 | BUG_ON(!set->mode && set->fb); |
| 479 | BUG_ON(set->fb && set->num_connectors == 0); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 480 | |
| 481 | crtc_funcs = set->crtc->helper_private; |
| 482 | |
Chris Wilson | ede3ff5 | 2011-01-31 11:16:33 +0000 | [diff] [blame] | 483 | if (!set->mode) |
| 484 | set->fb = NULL; |
| 485 | |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 486 | if (set->fb) { |
| 487 | DRM_DEBUG_KMS("[CRTC:%d] [FB:%d] #connectors=%d (x y) (%i %i)\n", |
| 488 | set->crtc->base.id, set->fb->base.id, |
| 489 | (int)set->num_connectors, set->x, set->y); |
| 490 | } else { |
Chris Wilson | ede3ff5 | 2011-01-31 11:16:33 +0000 | [diff] [blame] | 491 | DRM_DEBUG_KMS("[CRTC:%d] [NOFB]\n", set->crtc->base.id); |
Thierry Reding | a74591d | 2014-04-29 11:44:39 +0200 | [diff] [blame] | 492 | drm_crtc_helper_disable(set->crtc); |
| 493 | return 0; |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 494 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 495 | |
| 496 | dev = set->crtc->dev; |
| 497 | |
Daniel Vetter | 62ff94a | 2014-01-23 22:18:47 +0100 | [diff] [blame] | 498 | drm_warn_on_modeset_not_all_locked(dev); |
| 499 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 500 | /* |
| 501 | * Allocate space for the backup of all (non-pointer) encoder and |
| 502 | * connector data. |
| 503 | */ |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 504 | save_encoders = kzalloc(dev->mode_config.num_encoder * |
| 505 | sizeof(struct drm_encoder), GFP_KERNEL); |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 506 | if (!save_encoders) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 507 | return -ENOMEM; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 508 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 509 | save_connectors = kzalloc(dev->mode_config.num_connector * |
| 510 | sizeof(struct drm_connector), GFP_KERNEL); |
| 511 | if (!save_connectors) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 512 | kfree(save_encoders); |
| 513 | return -ENOMEM; |
| 514 | } |
| 515 | |
Ilija Hadzic | 02ee4e9 | 2013-10-29 11:09:46 -0400 | [diff] [blame] | 516 | /* |
| 517 | * Copy data. Note that driver private data is not affected. |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 518 | * Should anything bad happen only the expected state is |
| 519 | * restored, not the drivers personal bookkeeping. |
| 520 | */ |
| 521 | count = 0; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 522 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 523 | save_encoders[count++] = *encoder; |
| 524 | } |
| 525 | |
| 526 | count = 0; |
| 527 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 528 | save_connectors[count++] = *connector; |
| 529 | } |
| 530 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 531 | save_set.crtc = set->crtc; |
| 532 | save_set.mode = &set->crtc->mode; |
| 533 | save_set.x = set->crtc->x; |
| 534 | save_set.y = set->crtc->y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 535 | save_set.fb = set->crtc->primary->fb; |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 536 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 537 | /* We should be able to check here if the fb has the same properties |
| 538 | * and then just flip_or_move it */ |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 539 | if (set->crtc->primary->fb != set->fb) { |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 540 | /* 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] | 541 | if (set->crtc->primary->fb == NULL) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 542 | DRM_DEBUG_KMS("crtc has no fb, full mode set\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 543 | mode_changed = true; |
Jakob Bornecrantz | 4cb72b1 | 2009-08-03 13:43:59 +0100 | [diff] [blame] | 544 | } else if (set->fb == NULL) { |
| 545 | mode_changed = true; |
Laurent Pinchart | ce83adf | 2013-04-22 01:38:47 +0200 | [diff] [blame] | 546 | } else if (set->fb->pixel_format != |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 547 | set->crtc->primary->fb->pixel_format) { |
Laurent Pinchart | ce83adf | 2013-04-22 01:38:47 +0200 | [diff] [blame] | 548 | mode_changed = true; |
Dave Airlie | 8dff474 | 2010-02-11 14:28:58 +1000 | [diff] [blame] | 549 | } else |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 550 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | if (set->x != set->crtc->x || set->y != set->crtc->y) |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 554 | fb_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 555 | |
| 556 | if (set->mode && !drm_mode_equal(set->mode, &set->crtc->mode)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 557 | DRM_DEBUG_KMS("modes are different, full mode set\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 558 | drm_mode_debug_printmodeline(&set->crtc->mode); |
| 559 | drm_mode_debug_printmodeline(set->mode); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 560 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | /* a) traverse passed in connector list and get encoders for them */ |
| 564 | count = 0; |
| 565 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 566 | const struct drm_connector_helper_funcs *connector_funcs = |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 567 | connector->helper_private; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 568 | new_encoder = connector->encoder; |
| 569 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 570 | if (set->connectors[ro] == connector) { |
| 571 | new_encoder = connector_funcs->best_encoder(connector); |
| 572 | /* if we can't get an encoder for a connector |
| 573 | we are setting now - then fail */ |
| 574 | if (new_encoder == NULL) |
| 575 | /* don't break so fail path works correct */ |
| 576 | fail = 1; |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 577 | |
| 578 | if (connector->dpms != DRM_MODE_DPMS_ON) { |
| 579 | DRM_DEBUG_KMS("connector dpms not on, full mode switch\n"); |
| 580 | mode_changed = true; |
| 581 | } |
Daniel Vetter | 177cf92 | 2014-04-01 22:14:59 +0200 | [diff] [blame] | 582 | |
| 583 | break; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 584 | } |
| 585 | } |
| 586 | |
| 587 | if (new_encoder != connector->encoder) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 588 | DRM_DEBUG_KMS("encoder changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 589 | mode_changed = true; |
Maarten Maathuis | ff846ab | 2009-08-19 00:56:45 +0200 | [diff] [blame] | 590 | /* If the encoder is reused for another connector, then |
| 591 | * the appropriate crtc will be set later. |
| 592 | */ |
Maarten Maathuis | ff6fdbe | 2009-09-01 03:39:04 +0200 | [diff] [blame] | 593 | if (connector->encoder) |
| 594 | connector->encoder->crtc = NULL; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 595 | connector->encoder = new_encoder; |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | if (fail) { |
| 600 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 601 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | count = 0; |
| 605 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 606 | if (!connector->encoder) |
| 607 | continue; |
| 608 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 609 | if (connector->encoder->crtc == set->crtc) |
| 610 | new_crtc = NULL; |
| 611 | else |
| 612 | new_crtc = connector->encoder->crtc; |
| 613 | |
| 614 | for (ro = 0; ro < set->num_connectors; ro++) { |
| 615 | if (set->connectors[ro] == connector) |
| 616 | new_crtc = set->crtc; |
| 617 | } |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 618 | |
| 619 | /* Make sure the new CRTC will work with the encoder */ |
| 620 | if (new_crtc && |
| 621 | !drm_encoder_crtc_ok(connector->encoder, new_crtc)) { |
| 622 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 623 | goto fail; |
Jesse Barnes | 7bec756 | 2009-02-23 16:09:34 -0800 | [diff] [blame] | 624 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 625 | if (new_crtc != connector->encoder->crtc) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 626 | DRM_DEBUG_KMS("crtc changed, full mode switch\n"); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 627 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 628 | connector->encoder->crtc = new_crtc; |
| 629 | } |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 630 | if (new_crtc) { |
| 631 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [CRTC:%d]\n", |
Jani Nikula | 2593382 | 2014-06-03 14:56:20 +0300 | [diff] [blame] | 632 | connector->base.id, connector->name, |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 633 | new_crtc->base.id); |
| 634 | } else { |
| 635 | DRM_DEBUG_KMS("[CONNECTOR:%d:%s] to [NOCRTC]\n", |
Jani Nikula | 2593382 | 2014-06-03 14:56:20 +0300 | [diff] [blame] | 636 | connector->base.id, connector->name); |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 637 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 638 | } |
| 639 | |
| 640 | /* mode_set_base is not a required function */ |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 641 | if (fb_changed && !crtc_funcs->mode_set_base) |
| 642 | mode_changed = true; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 643 | |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 644 | if (mode_changed) { |
Ilija Hadzic | 48b1f5d | 2013-10-29 11:09:45 -0400 | [diff] [blame] | 645 | if (drm_helper_crtc_in_use(set->crtc)) { |
Zhao Yakui | 58367ed | 2009-07-20 13:48:07 +0800 | [diff] [blame] | 646 | DRM_DEBUG_KMS("attempting to set mode from" |
| 647 | " userspace\n"); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 648 | drm_mode_debug_printmodeline(set->mode); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 649 | set->crtc->primary->fb = set->fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 650 | if (!drm_crtc_helper_set_mode(set->crtc, set->mode, |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 651 | set->x, set->y, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 652 | save_set.fb)) { |
Jerome Glisse | 9440106 | 2010-07-15 15:43:25 -0400 | [diff] [blame] | 653 | DRM_ERROR("failed to set mode on [CRTC:%d]\n", |
| 654 | set->crtc->base.id); |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 655 | set->crtc->primary->fb = save_set.fb; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 656 | ret = -EINVAL; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 657 | goto fail; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 658 | } |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 659 | DRM_DEBUG_KMS("Setting connector DPMS state to on\n"); |
| 660 | for (i = 0; i < set->num_connectors; i++) { |
| 661 | 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] | 662 | set->connectors[i]->name); |
Daniel Vetter | 25f397a | 2013-07-19 18:57:11 +0200 | [diff] [blame] | 663 | set->connectors[i]->funcs->dpms(set->connectors[i], DRM_MODE_DPMS_ON); |
| 664 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 665 | } |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 666 | __drm_helper_disable_unused_functions(dev); |
Jesse Barnes | 712531b | 2009-01-09 13:56:14 -0800 | [diff] [blame] | 667 | } else if (fb_changed) { |
Ben Skeggs | 9b1596a | 2009-09-18 10:43:52 +1000 | [diff] [blame] | 668 | set->crtc->x = set->x; |
| 669 | set->crtc->y = set->y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 670 | set->crtc->primary->fb = set->fb; |
Chris Wilson | 5c3b82e | 2009-02-11 13:25:09 +0000 | [diff] [blame] | 671 | ret = crtc_funcs->mode_set_base(set->crtc, |
Ilija Hadzic | bec2eac | 2013-10-29 11:09:42 -0400 | [diff] [blame] | 672 | set->x, set->y, save_set.fb); |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 673 | if (ret != 0) { |
Ilija Hadzic | fbce406 | 2013-10-29 11:09:43 -0400 | [diff] [blame] | 674 | set->crtc->x = save_set.x; |
| 675 | set->crtc->y = save_set.y; |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 676 | set->crtc->primary->fb = save_set.fb; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 677 | goto fail; |
Chris Wilson | 0ba41e4 | 2011-01-08 15:10:41 +0000 | [diff] [blame] | 678 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 679 | } |
| 680 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 681 | kfree(save_connectors); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 682 | kfree(save_encoders); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 683 | return 0; |
| 684 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 685 | fail: |
| 686 | /* Restore all previous data. */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 687 | count = 0; |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 688 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 689 | *encoder = save_encoders[count++]; |
Chris Wilson | e62fb64 | 2009-02-11 16:39:21 +0000 | [diff] [blame] | 690 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 691 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 692 | count = 0; |
| 693 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 694 | *connector = save_connectors[count++]; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 695 | } |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 696 | |
Jesse Barnes | c5006cfe | 2011-11-07 10:39:57 -0800 | [diff] [blame] | 697 | /* Try to restore the config */ |
| 698 | if (mode_changed && |
| 699 | !drm_crtc_helper_set_mode(save_set.crtc, save_set.mode, save_set.x, |
| 700 | save_set.y, save_set.fb)) |
| 701 | DRM_ERROR("failed to restore config after modeset failure\n"); |
| 702 | |
Maarten Maathuis | e67aae7 | 2009-08-27 10:18:29 +0200 | [diff] [blame] | 703 | kfree(save_connectors); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 704 | kfree(save_encoders); |
| 705 | return ret; |
| 706 | } |
| 707 | EXPORT_SYMBOL(drm_crtc_helper_set_config); |
| 708 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 709 | static int drm_helper_choose_encoder_dpms(struct drm_encoder *encoder) |
| 710 | { |
| 711 | int dpms = DRM_MODE_DPMS_OFF; |
| 712 | struct drm_connector *connector; |
| 713 | struct drm_device *dev = encoder->dev; |
| 714 | |
| 715 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 716 | if (connector->encoder == encoder) |
| 717 | if (connector->dpms < dpms) |
| 718 | dpms = connector->dpms; |
| 719 | return dpms; |
| 720 | } |
| 721 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 722 | /* Helper which handles bridge ordering around encoder dpms */ |
| 723 | static void drm_helper_encoder_dpms(struct drm_encoder *encoder, int mode) |
| 724 | { |
| 725 | struct drm_bridge *bridge = encoder->bridge; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 726 | const struct drm_encoder_helper_funcs *encoder_funcs; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 727 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 728 | if (mode == DRM_MODE_DPMS_ON) |
| 729 | drm_bridge_pre_enable(bridge); |
| 730 | else |
| 731 | drm_bridge_disable(bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 732 | |
| 733 | encoder_funcs = encoder->helper_private; |
| 734 | if (encoder_funcs->dpms) |
| 735 | encoder_funcs->dpms(encoder, mode); |
| 736 | |
Archit Taneja | 862e686 | 2015-05-21 11:03:16 +0530 | [diff] [blame] | 737 | if (mode == DRM_MODE_DPMS_ON) |
| 738 | drm_bridge_enable(bridge); |
| 739 | else |
| 740 | drm_bridge_post_disable(bridge); |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 741 | } |
| 742 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 743 | static int drm_helper_choose_crtc_dpms(struct drm_crtc *crtc) |
| 744 | { |
| 745 | int dpms = DRM_MODE_DPMS_OFF; |
| 746 | struct drm_connector *connector; |
| 747 | struct drm_device *dev = crtc->dev; |
| 748 | |
| 749 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) |
| 750 | if (connector->encoder && connector->encoder->crtc == crtc) |
| 751 | if (connector->dpms < dpms) |
| 752 | dpms = connector->dpms; |
| 753 | return dpms; |
| 754 | } |
| 755 | |
| 756 | /** |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 757 | * drm_helper_connector_dpms() - connector dpms helper implementation |
| 758 | * @connector: affected connector |
| 759 | * @mode: DPMS mode |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 760 | * |
Daniel Vetter | 0d4ed4c | 2012-11-01 14:45:16 +0100 | [diff] [blame] | 761 | * This is the main helper function provided by the crtc helper framework for |
| 762 | * implementing the DPMS connector attribute. It computes the new desired DPMS |
| 763 | * state for all encoders and crtcs in the output mesh and calls the ->dpms() |
| 764 | * callback provided by the driver appropriately. |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 765 | */ |
| 766 | void drm_helper_connector_dpms(struct drm_connector *connector, int mode) |
| 767 | { |
| 768 | struct drm_encoder *encoder = connector->encoder; |
| 769 | struct drm_crtc *crtc = encoder ? encoder->crtc : NULL; |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 770 | int old_dpms, encoder_dpms = DRM_MODE_DPMS_OFF; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 771 | |
| 772 | if (mode == connector->dpms) |
| 773 | return; |
| 774 | |
| 775 | old_dpms = connector->dpms; |
| 776 | connector->dpms = mode; |
| 777 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 778 | if (encoder) |
| 779 | encoder_dpms = drm_helper_choose_encoder_dpms(encoder); |
| 780 | |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 781 | /* from off to on, do crtc then encoder */ |
| 782 | if (mode < old_dpms) { |
| 783 | if (crtc) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 784 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 785 | if (crtc_funcs->dpms) |
| 786 | (*crtc_funcs->dpms) (crtc, |
| 787 | drm_helper_choose_crtc_dpms(crtc)); |
| 788 | } |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 789 | if (encoder) |
| 790 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 791 | } |
| 792 | |
| 793 | /* from on to off, do encoder then crtc */ |
| 794 | if (mode > old_dpms) { |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 795 | if (encoder) |
| 796 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 797 | if (crtc) { |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 798 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Keith Packard | c9fb15f | 2009-05-30 20:42:28 -0700 | [diff] [blame] | 799 | if (crtc_funcs->dpms) |
| 800 | (*crtc_funcs->dpms) (crtc, |
| 801 | drm_helper_choose_crtc_dpms(crtc)); |
| 802 | } |
| 803 | } |
| 804 | |
| 805 | return; |
| 806 | } |
| 807 | EXPORT_SYMBOL(drm_helper_connector_dpms); |
| 808 | |
Daniel Vetter | 3fcc42e | 2014-01-23 22:58:26 +0100 | [diff] [blame] | 809 | /** |
| 810 | * drm_helper_mode_fill_fb_struct - fill out framebuffer metadata |
| 811 | * @fb: drm_framebuffer object to fill out |
| 812 | * @mode_cmd: metadata from the userspace fb creation request |
| 813 | * |
| 814 | * This helper can be used in a drivers fb_create callback to pre-fill the fb's |
| 815 | * metadata fields. |
| 816 | */ |
Daniel Vetter | 9fd9378 | 2014-01-23 22:16:24 +0100 | [diff] [blame] | 817 | void drm_helper_mode_fill_fb_struct(struct drm_framebuffer *fb, |
| 818 | struct drm_mode_fb_cmd2 *mode_cmd) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 819 | { |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 820 | int i; |
| 821 | |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 822 | fb->width = mode_cmd->width; |
| 823 | fb->height = mode_cmd->height; |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 824 | for (i = 0; i < 4; i++) { |
| 825 | fb->pitches[i] = mode_cmd->pitches[i]; |
| 826 | fb->offsets[i] = mode_cmd->offsets[i]; |
Rob Clark | e3eb325 | 2015-02-05 14:41:52 +0000 | [diff] [blame] | 827 | fb->modifier[i] = mode_cmd->modifier[i]; |
Ville Syrjälä | 01f2c77 | 2011-12-20 00:06:49 +0200 | [diff] [blame] | 828 | } |
Dave Airlie | 248dbc2 | 2011-11-29 20:02:54 +0000 | [diff] [blame] | 829 | drm_fb_get_bpp_depth(mode_cmd->pixel_format, &fb->depth, |
Jesse Barnes | 308e5bc | 2011-11-14 14:51:28 -0800 | [diff] [blame] | 830 | &fb->bits_per_pixel); |
| 831 | fb->pixel_format = mode_cmd->pixel_format; |
Fabien DESSENNE | d980b18 | 2014-07-01 14:40:42 +0200 | [diff] [blame] | 832 | fb->flags = mode_cmd->flags; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 833 | } |
| 834 | EXPORT_SYMBOL(drm_helper_mode_fill_fb_struct); |
| 835 | |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 836 | /** |
| 837 | * drm_helper_resume_force_mode - force-restore mode setting configuration |
| 838 | * @dev: drm_device which should be restored |
| 839 | * |
| 840 | * Drivers which use the mode setting helpers can use this function to |
| 841 | * force-restore the mode setting configuration e.g. on resume or when something |
| 842 | * else might have trampled over the hw state (like some overzealous old BIOSen |
| 843 | * tended to do). |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 844 | * |
| 845 | * This helper doesn't provide a error return value since restoring the old |
| 846 | * config should never fail due to resource allocation issues since the driver |
| 847 | * has successfully set the restored configuration already. Hence this should |
| 848 | * boil down to the equivalent of a few dpms on calls, which also don't provide |
| 849 | * an error code. |
| 850 | * |
| 851 | * Drivers where simply restoring an old configuration again might fail (e.g. |
| 852 | * due to slight differences in allocating shared resources when the |
| 853 | * configuration is restored in a different order than when userspace set it up) |
| 854 | * need to use their own restore logic. |
Daniel Vetter | aa4cd91 | 2014-01-22 16:42:02 +0100 | [diff] [blame] | 855 | */ |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 856 | void drm_helper_resume_force_mode(struct drm_device *dev) |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 857 | { |
| 858 | struct drm_crtc *crtc; |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 859 | struct drm_encoder *encoder; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 860 | const struct drm_crtc_helper_funcs *crtc_funcs; |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 861 | int encoder_dpms; |
| 862 | bool ret; |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 863 | |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame] | 864 | drm_modeset_lock_all(dev); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 865 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 866 | |
| 867 | if (!crtc->enabled) |
| 868 | continue; |
| 869 | |
Kristian Høgsberg | 3c4fdcf | 2008-12-17 22:14:46 -0500 | [diff] [blame] | 870 | ret = drm_crtc_helper_set_mode(crtc, &crtc->mode, |
Matt Roper | f4510a2 | 2014-04-01 15:22:40 -0700 | [diff] [blame] | 871 | crtc->x, crtc->y, crtc->primary->fb); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 872 | |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 873 | /* Restoring the old config should never fail! */ |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 874 | if (ret == false) |
| 875 | DRM_ERROR("failed to set mode on crtc %p\n", crtc); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 876 | |
| 877 | /* Turn off outputs that were already powered off */ |
| 878 | if (drm_helper_choose_crtc_dpms(crtc)) { |
| 879 | list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) { |
| 880 | |
| 881 | if(encoder->crtc != crtc) |
| 882 | continue; |
| 883 | |
Sean Paul | 3b336ec | 2013-08-14 16:47:37 -0400 | [diff] [blame] | 884 | encoder_dpms = drm_helper_choose_encoder_dpms( |
| 885 | encoder); |
| 886 | |
| 887 | drm_helper_encoder_dpms(encoder, encoder_dpms); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 888 | } |
Chris Wilson | 817e631 | 2010-08-06 15:03:31 +0100 | [diff] [blame] | 889 | |
| 890 | crtc_funcs = crtc->helper_private; |
| 891 | if (crtc_funcs->dpms) |
| 892 | (*crtc_funcs->dpms) (crtc, |
| 893 | drm_helper_choose_crtc_dpms(crtc)); |
David John | 89347bb | 2009-12-31 12:00:46 +0530 | [diff] [blame] | 894 | } |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 895 | } |
Daniel Vetter | 00d762c | 2014-01-23 22:28:30 +0100 | [diff] [blame] | 896 | |
Zhao Yakui | af4fcb5 | 2009-07-08 14:13:13 +0800 | [diff] [blame] | 897 | /* disable the unused connectors while restoring the modesetting */ |
Daniel Vetter | b182cc5 | 2014-03-20 14:26:34 +0100 | [diff] [blame] | 898 | __drm_helper_disable_unused_functions(dev); |
Dave Airlie | 3ea8785 | 2014-03-21 10:45:40 +1000 | [diff] [blame] | 899 | drm_modeset_unlock_all(dev); |
Dave Airlie | f453ba0 | 2008-11-07 14:05:41 -0800 | [diff] [blame] | 900 | } |
| 901 | EXPORT_SYMBOL(drm_helper_resume_force_mode); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 902 | |
| 903 | /** |
| 904 | * drm_helper_crtc_mode_set - mode_set implementation for atomic plane helpers |
| 905 | * @crtc: DRM CRTC |
| 906 | * @mode: DRM display mode which userspace requested |
| 907 | * @adjusted_mode: DRM display mode adjusted by ->mode_fixup callbacks |
| 908 | * @x: x offset of the CRTC scanout area on the underlying framebuffer |
| 909 | * @y: y offset of the CRTC scanout area on the underlying framebuffer |
| 910 | * @old_fb: previous framebuffer |
| 911 | * |
| 912 | * This function implements a callback useable as the ->mode_set callback |
| 913 | * required by the crtc helpers. Besides the atomic plane helper functions for |
| 914 | * the primary plane the driver must also provide the ->mode_set_nofb callback |
| 915 | * to set up the crtc. |
| 916 | * |
| 917 | * This is a transitional helper useful for converting drivers to the atomic |
| 918 | * interfaces. |
| 919 | */ |
| 920 | int drm_helper_crtc_mode_set(struct drm_crtc *crtc, struct drm_display_mode *mode, |
| 921 | struct drm_display_mode *adjusted_mode, int x, int y, |
| 922 | struct drm_framebuffer *old_fb) |
| 923 | { |
| 924 | struct drm_crtc_state *crtc_state; |
Jani Nikula | be26a66 | 2015-03-11 11:51:06 +0200 | [diff] [blame] | 925 | const struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 926 | int ret; |
| 927 | |
| 928 | if (crtc->funcs->atomic_duplicate_state) |
| 929 | crtc_state = crtc->funcs->atomic_duplicate_state(crtc); |
Daniel Stone | 9f658b7 | 2015-05-22 13:34:45 +0100 | [diff] [blame] | 930 | else { |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 931 | crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL); |
Daniel Stone | 9f658b7 | 2015-05-22 13:34:45 +0100 | [diff] [blame] | 932 | if (!crtc_state) |
| 933 | return -ENOMEM; |
| 934 | if (crtc->state) |
| 935 | __drm_atomic_helper_crtc_duplicate_state(crtc, crtc_state); |
| 936 | else |
| 937 | crtc_state->crtc = crtc; |
| 938 | } |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 939 | |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 940 | crtc_state->planes_changed = true; |
Daniel Vetter | 623369e | 2014-09-16 17:50:47 +0200 | [diff] [blame] | 941 | crtc_state->mode_changed = true; |
Daniel Stone | 819364d | 2015-05-26 14:36:48 +0100 | [diff] [blame] | 942 | ret = drm_atomic_set_mode_for_crtc(crtc_state, mode); |
| 943 | if (ret) |
| 944 | goto out; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 945 | drm_mode_copy(&crtc_state->adjusted_mode, adjusted_mode); |
| 946 | |
| 947 | if (crtc_funcs->atomic_check) { |
| 948 | ret = crtc_funcs->atomic_check(crtc, crtc_state); |
Daniel Stone | 9f658b7 | 2015-05-22 13:34:45 +0100 | [diff] [blame] | 949 | if (ret) |
| 950 | goto out; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 951 | } |
| 952 | |
| 953 | swap(crtc->state, crtc_state); |
| 954 | |
| 955 | crtc_funcs->mode_set_nofb(crtc); |
| 956 | |
Daniel Stone | 9f658b7 | 2015-05-22 13:34:45 +0100 | [diff] [blame] | 957 | ret = drm_helper_crtc_mode_set_base(crtc, x, y, old_fb); |
| 958 | |
| 959 | out: |
| 960 | if (crtc->funcs->atomic_destroy_state) |
| 961 | crtc->funcs->atomic_destroy_state(crtc, crtc_state); |
| 962 | else { |
| 963 | __drm_atomic_helper_crtc_destroy_state(crtc, crtc_state); |
| 964 | kfree(crtc_state); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 965 | } |
| 966 | |
Daniel Stone | 9f658b7 | 2015-05-22 13:34:45 +0100 | [diff] [blame] | 967 | return ret; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 968 | } |
| 969 | EXPORT_SYMBOL(drm_helper_crtc_mode_set); |
| 970 | |
| 971 | /** |
| 972 | * drm_helper_crtc_mode_set_base - mode_set_base implementation for atomic plane helpers |
| 973 | * @crtc: DRM CRTC |
| 974 | * @x: x offset of the CRTC scanout area on the underlying framebuffer |
| 975 | * @y: y offset of the CRTC scanout area on the underlying framebuffer |
| 976 | * @old_fb: previous framebuffer |
| 977 | * |
| 978 | * This function implements a callback useable as the ->mode_set_base used |
| 979 | * required by the crtc helpers. The driver must provide the atomic plane helper |
| 980 | * functions for the primary plane. |
| 981 | * |
| 982 | * This is a transitional helper useful for converting drivers to the atomic |
| 983 | * interfaces. |
| 984 | */ |
| 985 | int drm_helper_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, |
| 986 | struct drm_framebuffer *old_fb) |
| 987 | { |
| 988 | struct drm_plane_state *plane_state; |
| 989 | struct drm_plane *plane = crtc->primary; |
| 990 | |
| 991 | if (plane->funcs->atomic_duplicate_state) |
| 992 | plane_state = plane->funcs->atomic_duplicate_state(plane); |
| 993 | else if (plane->state) |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 994 | plane_state = drm_atomic_helper_plane_duplicate_state(plane); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 995 | else |
| 996 | plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL); |
| 997 | if (!plane_state) |
| 998 | return -ENOMEM; |
Daniel Vetter | 07cc0ef | 2014-11-27 15:49:39 +0100 | [diff] [blame] | 999 | plane_state->plane = plane; |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1000 | |
| 1001 | plane_state->crtc = crtc; |
Daniel Vetter | 321ebf0 | 2014-11-04 22:57:27 +0100 | [diff] [blame] | 1002 | drm_atomic_set_fb_for_plane(plane_state, crtc->primary->fb); |
Daniel Vetter | 2f324b4 | 2014-10-29 11:13:47 +0100 | [diff] [blame] | 1003 | plane_state->crtc_x = 0; |
| 1004 | plane_state->crtc_y = 0; |
| 1005 | plane_state->crtc_h = crtc->mode.vdisplay; |
| 1006 | plane_state->crtc_w = crtc->mode.hdisplay; |
| 1007 | plane_state->src_x = x << 16; |
| 1008 | plane_state->src_y = y << 16; |
| 1009 | plane_state->src_h = crtc->mode.vdisplay << 16; |
| 1010 | plane_state->src_w = crtc->mode.hdisplay << 16; |
| 1011 | |
| 1012 | return drm_plane_helper_commit(plane, plane_state, old_fb); |
| 1013 | } |
| 1014 | EXPORT_SYMBOL(drm_helper_crtc_mode_set_base); |