Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2006-2009 Red Hat Inc. |
| 3 | * Copyright (c) 2006-2008 Intel Corporation |
| 4 | * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> |
| 5 | * |
| 6 | * DRM framebuffer helper functions |
| 7 | * |
| 8 | * Permission to use, copy, modify, distribute, and sell this software and its |
| 9 | * documentation for any purpose is hereby granted without fee, provided that |
| 10 | * the above copyright notice appear in all copies and that both that copyright |
| 11 | * notice and this permission notice appear in supporting documentation, and |
| 12 | * that the name of the copyright holders not be used in advertising or |
| 13 | * publicity pertaining to distribution of the software without specific, |
| 14 | * written prior permission. The copyright holders make no representations |
| 15 | * about the suitability of this software for any purpose. It is provided "as |
| 16 | * is" without express or implied warranty. |
| 17 | * |
| 18 | * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, |
| 19 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO |
| 20 | * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR |
| 21 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, |
| 22 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER |
| 23 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
| 24 | * OF THIS SOFTWARE. |
| 25 | * |
| 26 | * Authors: |
| 27 | * Dave Airlie <airlied@linux.ie> |
| 28 | * Jesse Barnes <jesse.barnes@intel.com> |
| 29 | */ |
Sachin Kamat | d56b1b9 | 2012-11-15 03:43:29 +0000 | [diff] [blame] | 30 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
| 31 | |
Andy Shevchenko | 3b40a44 | 2010-02-02 14:40:32 -0800 | [diff] [blame] | 32 | #include <linux/kernel.h> |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 33 | #include <linux/sysrq.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 34 | #include <linux/slab.h> |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 35 | #include <linux/fb.h> |
Paul Gortmaker | e0cd360 | 2011-08-30 11:04:30 -0400 | [diff] [blame] | 36 | #include <linux/module.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 37 | #include <drm/drmP.h> |
| 38 | #include <drm/drm_crtc.h> |
| 39 | #include <drm/drm_fb_helper.h> |
| 40 | #include <drm/drm_crtc_helper.h> |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 41 | |
Dave Airlie | 6fcefd5 | 2009-09-08 11:08:32 +1000 | [diff] [blame] | 42 | MODULE_AUTHOR("David Airlie, Jesse Barnes"); |
| 43 | MODULE_DESCRIPTION("DRM KMS helper"); |
| 44 | MODULE_LICENSE("GPL and additional rights"); |
| 45 | |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 46 | static LIST_HEAD(kernel_fb_helper_list); |
| 47 | |
Daniel Vetter | d0ddc033 | 2012-11-01 14:45:17 +0100 | [diff] [blame] | 48 | /** |
| 49 | * DOC: fbdev helpers |
| 50 | * |
| 51 | * The fb helper functions are useful to provide an fbdev on top of a drm kernel |
| 52 | * mode setting driver. They can be used mostly independantely from the crtc |
| 53 | * helper functions used by many drivers to implement the kernel mode setting |
| 54 | * interfaces. |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 55 | * |
| 56 | * Initialization is done as a three-step process with drm_fb_helper_init(), |
| 57 | * drm_fb_helper_single_add_all_connectors() and drm_fb_helper_initial_config(). |
| 58 | * Drivers with fancier requirements than the default beheviour can override the |
| 59 | * second step with their own code. Teardown is done with drm_fb_helper_fini(). |
| 60 | * |
| 61 | * At runtime drivers should restore the fbdev console by calling |
| 62 | * drm_fb_helper_restore_fbdev_mode() from their ->lastclose callback. They |
| 63 | * should also notify the fb helper code from updates to the output |
| 64 | * configuration by calling drm_fb_helper_hotplug_event(). For easier |
| 65 | * integration with the output polling code in drm_crtc_helper.c the modeset |
| 66 | * code proves a ->output_poll_changed callback. |
| 67 | * |
| 68 | * All other functions exported by the fb helper library can be used to |
| 69 | * implement the fbdev driver interface by the driver. |
Daniel Vetter | d0ddc033 | 2012-11-01 14:45:17 +0100 | [diff] [blame] | 70 | */ |
| 71 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 72 | /** |
| 73 | * drm_fb_helper_single_add_all_connectors() - add all connectors to fbdev |
| 74 | * emulation helper |
| 75 | * @fb_helper: fbdev initialized with drm_fb_helper_init |
| 76 | * |
| 77 | * This functions adds all the available connectors for use with the given |
| 78 | * fb_helper. This is a separate step to allow drivers to freely assign |
| 79 | * connectors to the fbdev, e.g. if some are reserved for special purposes or |
| 80 | * not adequate to be used for the fbcon. |
| 81 | * |
| 82 | * Since this is part of the initial setup before the fbdev is published, no |
| 83 | * locking is required. |
| 84 | */ |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 85 | int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper) |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 86 | { |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 87 | struct drm_device *dev = fb_helper->dev; |
| 88 | struct drm_connector *connector; |
| 89 | int i; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 90 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 91 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { |
| 92 | struct drm_fb_helper_connector *fb_helper_connector; |
| 93 | |
| 94 | fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL); |
| 95 | if (!fb_helper_connector) |
| 96 | goto fail; |
| 97 | |
| 98 | fb_helper_connector->connector = connector; |
| 99 | fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector; |
| 100 | } |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 101 | return 0; |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 102 | fail: |
| 103 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 104 | kfree(fb_helper->connector_info[i]); |
| 105 | fb_helper->connector_info[i] = NULL; |
| 106 | } |
| 107 | fb_helper->connector_count = 0; |
| 108 | return -ENOMEM; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 109 | } |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 110 | EXPORT_SYMBOL(drm_fb_helper_single_add_all_connectors); |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 111 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 112 | static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper) |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 113 | { |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 114 | struct drm_fb_helper_connector *fb_helper_conn; |
| 115 | int i; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 116 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 117 | for (i = 0; i < fb_helper->connector_count; i++) { |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 118 | struct drm_cmdline_mode *mode; |
| 119 | struct drm_connector *connector; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 120 | char *option = NULL; |
| 121 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 122 | fb_helper_conn = fb_helper->connector_info[i]; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 123 | connector = fb_helper_conn->connector; |
| 124 | mode = &fb_helper_conn->cmdline_mode; |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 125 | |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 126 | /* do something on return - turn off connector maybe */ |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 127 | if (fb_get_options(drm_get_connector_name(connector), &option)) |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 128 | continue; |
| 129 | |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 130 | if (drm_mode_parse_command_line_for_connector(option, |
| 131 | connector, |
| 132 | mode)) { |
| 133 | if (mode->force) { |
| 134 | const char *s; |
| 135 | switch (mode->force) { |
Sachin Kamat | 6c91083 | 2012-11-15 03:43:28 +0000 | [diff] [blame] | 136 | case DRM_FORCE_OFF: |
| 137 | s = "OFF"; |
| 138 | break; |
| 139 | case DRM_FORCE_ON_DIGITAL: |
| 140 | s = "ON - dig"; |
| 141 | break; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 142 | default: |
Sachin Kamat | 6c91083 | 2012-11-15 03:43:28 +0000 | [diff] [blame] | 143 | case DRM_FORCE_ON: |
| 144 | s = "ON"; |
| 145 | break; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 146 | } |
| 147 | |
| 148 | DRM_INFO("forcing %s connector %s\n", |
| 149 | drm_get_connector_name(connector), s); |
| 150 | connector->force = mode->force; |
| 151 | } |
| 152 | |
| 153 | DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n", |
| 154 | drm_get_connector_name(connector), |
| 155 | mode->xres, mode->yres, |
| 156 | mode->refresh_specified ? mode->refresh : 60, |
| 157 | mode->rb ? " reduced blanking" : "", |
| 158 | mode->margins ? " with margins" : "", |
| 159 | mode->interlace ? " interlaced" : ""); |
| 160 | } |
| 161 | |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 162 | } |
| 163 | return 0; |
| 164 | } |
| 165 | |
Jason Wessel | 9923102 | 2010-10-13 14:09:43 -0500 | [diff] [blame] | 166 | static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper) |
| 167 | { |
| 168 | uint16_t *r_base, *g_base, *b_base; |
| 169 | int i; |
| 170 | |
Ville Syrjälä | 04c0c56 | 2013-05-27 20:19:57 +0300 | [diff] [blame] | 171 | if (helper->funcs->gamma_get == NULL) |
| 172 | return; |
| 173 | |
Jason Wessel | 9923102 | 2010-10-13 14:09:43 -0500 | [diff] [blame] | 174 | r_base = crtc->gamma_store; |
| 175 | g_base = r_base + crtc->gamma_size; |
| 176 | b_base = g_base + crtc->gamma_size; |
| 177 | |
| 178 | for (i = 0; i < crtc->gamma_size; i++) |
| 179 | helper->funcs->gamma_get(crtc, &r_base[i], &g_base[i], &b_base[i], i); |
| 180 | } |
| 181 | |
| 182 | static void drm_fb_helper_restore_lut_atomic(struct drm_crtc *crtc) |
| 183 | { |
| 184 | uint16_t *r_base, *g_base, *b_base; |
| 185 | |
Laurent Pinchart | ebe0f24 | 2012-05-17 13:27:24 +0200 | [diff] [blame] | 186 | if (crtc->funcs->gamma_set == NULL) |
| 187 | return; |
| 188 | |
Jason Wessel | 9923102 | 2010-10-13 14:09:43 -0500 | [diff] [blame] | 189 | r_base = crtc->gamma_store; |
| 190 | g_base = r_base + crtc->gamma_size; |
| 191 | b_base = g_base + crtc->gamma_size; |
| 192 | |
| 193 | crtc->funcs->gamma_set(crtc, r_base, g_base, b_base, 0, crtc->gamma_size); |
| 194 | } |
| 195 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 196 | /** |
| 197 | * drm_fb_helper_debug_enter - implementation for ->fb_debug_enter |
| 198 | * @info: fbdev registered by the helper |
| 199 | */ |
Jesse Barnes | 1a7aba7 | 2010-08-05 09:22:31 -0500 | [diff] [blame] | 200 | int drm_fb_helper_debug_enter(struct fb_info *info) |
| 201 | { |
| 202 | struct drm_fb_helper *helper = info->par; |
| 203 | struct drm_crtc_helper_funcs *funcs; |
| 204 | int i; |
| 205 | |
| 206 | if (list_empty(&kernel_fb_helper_list)) |
| 207 | return false; |
| 208 | |
| 209 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { |
| 210 | for (i = 0; i < helper->crtc_count; i++) { |
| 211 | struct drm_mode_set *mode_set = |
| 212 | &helper->crtc_info[i].mode_set; |
| 213 | |
| 214 | if (!mode_set->crtc->enabled) |
| 215 | continue; |
| 216 | |
| 217 | funcs = mode_set->crtc->helper_private; |
Jason Wessel | 9923102 | 2010-10-13 14:09:43 -0500 | [diff] [blame] | 218 | drm_fb_helper_save_lut_atomic(mode_set->crtc, helper); |
Jesse Barnes | 1a7aba7 | 2010-08-05 09:22:31 -0500 | [diff] [blame] | 219 | funcs->mode_set_base_atomic(mode_set->crtc, |
| 220 | mode_set->fb, |
| 221 | mode_set->x, |
Jason Wessel | 413d45d | 2010-09-26 06:47:25 -0500 | [diff] [blame] | 222 | mode_set->y, |
Jason Wessel | 21c74a8 | 2010-10-13 14:09:44 -0500 | [diff] [blame] | 223 | ENTER_ATOMIC_MODE_SET); |
Jesse Barnes | 1a7aba7 | 2010-08-05 09:22:31 -0500 | [diff] [blame] | 224 | } |
| 225 | } |
| 226 | |
| 227 | return 0; |
| 228 | } |
| 229 | EXPORT_SYMBOL(drm_fb_helper_debug_enter); |
| 230 | |
| 231 | /* Find the real fb for a given fb helper CRTC */ |
| 232 | static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc) |
| 233 | { |
| 234 | struct drm_device *dev = crtc->dev; |
| 235 | struct drm_crtc *c; |
| 236 | |
| 237 | list_for_each_entry(c, &dev->mode_config.crtc_list, head) { |
| 238 | if (crtc->base.id == c->base.id) |
| 239 | return c->fb; |
| 240 | } |
| 241 | |
| 242 | return NULL; |
| 243 | } |
| 244 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 245 | /** |
| 246 | * drm_fb_helper_debug_leave - implementation for ->fb_debug_leave |
| 247 | * @info: fbdev registered by the helper |
| 248 | */ |
Jesse Barnes | 1a7aba7 | 2010-08-05 09:22:31 -0500 | [diff] [blame] | 249 | int drm_fb_helper_debug_leave(struct fb_info *info) |
| 250 | { |
| 251 | struct drm_fb_helper *helper = info->par; |
| 252 | struct drm_crtc *crtc; |
| 253 | struct drm_crtc_helper_funcs *funcs; |
| 254 | struct drm_framebuffer *fb; |
| 255 | int i; |
| 256 | |
| 257 | for (i = 0; i < helper->crtc_count; i++) { |
| 258 | struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set; |
| 259 | crtc = mode_set->crtc; |
| 260 | funcs = crtc->helper_private; |
| 261 | fb = drm_mode_config_fb(crtc); |
| 262 | |
| 263 | if (!crtc->enabled) |
| 264 | continue; |
| 265 | |
| 266 | if (!fb) { |
| 267 | DRM_ERROR("no fb to restore??\n"); |
| 268 | continue; |
| 269 | } |
| 270 | |
Jason Wessel | 9923102 | 2010-10-13 14:09:43 -0500 | [diff] [blame] | 271 | drm_fb_helper_restore_lut_atomic(mode_set->crtc); |
Jesse Barnes | 1a7aba7 | 2010-08-05 09:22:31 -0500 | [diff] [blame] | 272 | funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x, |
Jason Wessel | 21c74a8 | 2010-10-13 14:09:44 -0500 | [diff] [blame] | 273 | crtc->y, LEAVE_ATOMIC_MODE_SET); |
Jesse Barnes | 1a7aba7 | 2010-08-05 09:22:31 -0500 | [diff] [blame] | 274 | } |
| 275 | |
| 276 | return 0; |
| 277 | } |
| 278 | EXPORT_SYMBOL(drm_fb_helper_debug_leave); |
| 279 | |
Daniel Vetter | 6aed8ec | 2013-01-20 17:32:21 +0100 | [diff] [blame] | 280 | /** |
| 281 | * drm_fb_helper_restore_fbdev_mode - restore fbdev configuration |
| 282 | * @fb_helper: fbcon to restore |
| 283 | * |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 284 | * This should be called from driver's drm ->lastclose callback |
| 285 | * when implementing an fbcon on top of kms using this helper. This ensures that |
| 286 | * the user isn't greeted with a black screen when e.g. X dies. |
Daniel Vetter | 6aed8ec | 2013-01-20 17:32:21 +0100 | [diff] [blame] | 287 | */ |
Dave Airlie | e8e7a2b | 2011-04-21 22:18:32 +0100 | [diff] [blame] | 288 | bool drm_fb_helper_restore_fbdev_mode(struct drm_fb_helper *fb_helper) |
| 289 | { |
Ville Syrjälä | 3858bc5 | 2013-06-03 16:10:42 +0300 | [diff] [blame] | 290 | struct drm_device *dev = fb_helper->dev; |
| 291 | struct drm_plane *plane; |
Dave Airlie | e8e7a2b | 2011-04-21 22:18:32 +0100 | [diff] [blame] | 292 | bool error = false; |
Ville Syrjälä | 3858bc5 | 2013-06-03 16:10:42 +0300 | [diff] [blame] | 293 | int i; |
Daniel Vetter | 6aed8ec | 2013-01-20 17:32:21 +0100 | [diff] [blame] | 294 | |
Ville Syrjälä | 3858bc5 | 2013-06-03 16:10:42 +0300 | [diff] [blame] | 295 | drm_warn_on_modeset_not_all_locked(dev); |
| 296 | |
| 297 | list_for_each_entry(plane, &dev->mode_config.plane_list, head) |
| 298 | drm_plane_force_disable(plane); |
Daniel Vetter | 6aed8ec | 2013-01-20 17:32:21 +0100 | [diff] [blame] | 299 | |
Dave Airlie | e8e7a2b | 2011-04-21 22:18:32 +0100 | [diff] [blame] | 300 | for (i = 0; i < fb_helper->crtc_count; i++) { |
| 301 | struct drm_mode_set *mode_set = &fb_helper->crtc_info[i].mode_set; |
Ville Syrjälä | 3858bc5 | 2013-06-03 16:10:42 +0300 | [diff] [blame] | 302 | struct drm_crtc *crtc = mode_set->crtc; |
| 303 | int ret; |
| 304 | |
| 305 | if (crtc->funcs->cursor_set) { |
| 306 | ret = crtc->funcs->cursor_set(crtc, NULL, 0, 0, 0); |
| 307 | if (ret) |
| 308 | error = true; |
| 309 | } |
| 310 | |
Daniel Vetter | 2d13b67 | 2012-12-11 13:47:23 +0100 | [diff] [blame] | 311 | ret = drm_mode_set_config_internal(mode_set); |
Dave Airlie | e8e7a2b | 2011-04-21 22:18:32 +0100 | [diff] [blame] | 312 | if (ret) |
| 313 | error = true; |
| 314 | } |
| 315 | return error; |
| 316 | } |
| 317 | EXPORT_SYMBOL(drm_fb_helper_restore_fbdev_mode); |
| 318 | |
Daniel Vetter | d21bf46 | 2013-01-20 18:09:52 +0100 | [diff] [blame] | 319 | /* |
| 320 | * restore fbcon display for all kms driver's using this helper, used for sysrq |
| 321 | * and panic handling. |
| 322 | */ |
Sachin Kamat | 78b9c35 | 2012-08-01 17:15:32 +0530 | [diff] [blame] | 323 | static bool drm_fb_helper_force_kernel_mode(void) |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 324 | { |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 325 | bool ret, error = false; |
| 326 | struct drm_fb_helper *helper; |
| 327 | |
| 328 | if (list_empty(&kernel_fb_helper_list)) |
| 329 | return false; |
| 330 | |
| 331 | list_for_each_entry(helper, &kernel_fb_helper_list, kernel_fb_list) { |
Dave Airlie | e8e7a2b | 2011-04-21 22:18:32 +0100 | [diff] [blame] | 332 | if (helper->dev->switch_power_state == DRM_SWITCH_POWER_OFF) |
| 333 | continue; |
| 334 | |
| 335 | ret = drm_fb_helper_restore_fbdev_mode(helper); |
| 336 | if (ret) |
| 337 | error = true; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 338 | } |
| 339 | return error; |
| 340 | } |
| 341 | |
Daniel Vetter | 43c8a84 | 2013-01-20 18:18:07 +0100 | [diff] [blame] | 342 | static int drm_fb_helper_panic(struct notifier_block *n, unsigned long ununsed, |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 343 | void *panic_str) |
| 344 | { |
Hugh Dickins | d68752c | 2011-10-17 17:06:40 -0700 | [diff] [blame] | 345 | /* |
| 346 | * It's a waste of time and effort to switch back to text console |
| 347 | * if the kernel should reboot before panic messages can be seen. |
| 348 | */ |
| 349 | if (panic_timeout < 0) |
| 350 | return 0; |
| 351 | |
Sachin Kamat | d56b1b9 | 2012-11-15 03:43:29 +0000 | [diff] [blame] | 352 | pr_err("panic occurred, switching back to text console\n"); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 353 | return drm_fb_helper_force_kernel_mode(); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 354 | } |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 355 | |
| 356 | static struct notifier_block paniced = { |
| 357 | .notifier_call = drm_fb_helper_panic, |
| 358 | }; |
| 359 | |
Daniel Vetter | 20c60c3 | 2012-12-17 12:13:23 +0100 | [diff] [blame] | 360 | static bool drm_fb_helper_is_bound(struct drm_fb_helper *fb_helper) |
| 361 | { |
| 362 | struct drm_device *dev = fb_helper->dev; |
| 363 | struct drm_crtc *crtc; |
| 364 | int bound = 0, crtcs_bound = 0; |
| 365 | |
| 366 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
| 367 | if (crtc->fb) |
| 368 | crtcs_bound++; |
| 369 | if (crtc->fb == fb_helper->fb) |
| 370 | bound++; |
| 371 | } |
| 372 | |
| 373 | if (bound < crtcs_bound) |
| 374 | return false; |
| 375 | return true; |
| 376 | } |
| 377 | |
Mikael Pettersson | bea1d35 | 2009-09-28 18:26:25 +0200 | [diff] [blame] | 378 | #ifdef CONFIG_MAGIC_SYSRQ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 379 | static void drm_fb_helper_restore_work_fn(struct work_struct *ignored) |
| 380 | { |
Daniel Vetter | d21bf46 | 2013-01-20 18:09:52 +0100 | [diff] [blame] | 381 | bool ret; |
| 382 | ret = drm_fb_helper_force_kernel_mode(); |
| 383 | if (ret == true) |
| 384 | DRM_ERROR("Failed to restore crtc configuration\n"); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 385 | } |
| 386 | static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn); |
| 387 | |
Dmitry Torokhov | 1495cc9 | 2010-08-17 21:15:46 -0700 | [diff] [blame] | 388 | static void drm_fb_helper_sysrq(int dummy1) |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 389 | { |
| 390 | schedule_work(&drm_fb_helper_restore_work); |
| 391 | } |
| 392 | |
| 393 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { |
| 394 | .handler = drm_fb_helper_sysrq, |
| 395 | .help_msg = "force-fb(V)", |
| 396 | .action_msg = "Restore framebuffer console", |
| 397 | }; |
Randy Dunlap | b8c40d6 | 2010-03-25 18:29:05 +0000 | [diff] [blame] | 398 | #else |
| 399 | static struct sysrq_key_op sysrq_drm_fb_helper_restore_op = { }; |
Mikael Pettersson | bea1d35 | 2009-09-28 18:26:25 +0200 | [diff] [blame] | 400 | #endif |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 401 | |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 402 | static void drm_fb_helper_dpms(struct fb_info *info, int dpms_mode) |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 403 | { |
| 404 | struct drm_fb_helper *fb_helper = info->par; |
| 405 | struct drm_device *dev = fb_helper->dev; |
| 406 | struct drm_crtc *crtc; |
Jesse Barnes | 023eb57 | 2010-07-02 10:48:08 -0700 | [diff] [blame] | 407 | struct drm_connector *connector; |
Jesse Barnes | 023eb57 | 2010-07-02 10:48:08 -0700 | [diff] [blame] | 408 | int i, j; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 409 | |
| 410 | /* |
Daniel Vetter | 1b1d539 | 2013-01-24 16:42:07 +0100 | [diff] [blame] | 411 | * fbdev->blank can be called from irq context in case of a panic. |
| 412 | * Since we already have our own special panic handler which will |
| 413 | * restore the fbdev console mode completely, just bail out early. |
| 414 | */ |
| 415 | if (oops_in_progress) |
| 416 | return; |
| 417 | |
| 418 | /* |
Daniel Vetter | 928c2f0 | 2013-09-13 14:49:57 -0700 | [diff] [blame] | 419 | * fbdev->blank can be called from irq context in case of a panic. |
| 420 | * Since we already have our own special panic handler which will |
| 421 | * restore the fbdev console mode completely, just bail out early. |
| 422 | */ |
| 423 | if (oops_in_progress) |
| 424 | return; |
| 425 | |
| 426 | /* |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 427 | * For each CRTC in this fb, turn the connectors on/off. |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 428 | */ |
Daniel Vetter | 8484990 | 2012-12-02 00:28:11 +0100 | [diff] [blame] | 429 | drm_modeset_lock_all(dev); |
Daniel Vetter | 20c60c3 | 2012-12-17 12:13:23 +0100 | [diff] [blame] | 430 | if (!drm_fb_helper_is_bound(fb_helper)) { |
| 431 | drm_modeset_unlock_all(dev); |
| 432 | return; |
| 433 | } |
| 434 | |
Jesse Barnes | e87b2c4 | 2009-09-17 18:14:41 -0700 | [diff] [blame] | 435 | for (i = 0; i < fb_helper->crtc_count; i++) { |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 436 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 437 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 438 | if (!crtc->enabled) |
| 439 | continue; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 440 | |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 441 | /* Walk the connectors & encoders on this fb turning them on/off */ |
Jesse Barnes | 023eb57 | 2010-07-02 10:48:08 -0700 | [diff] [blame] | 442 | for (j = 0; j < fb_helper->connector_count; j++) { |
| 443 | connector = fb_helper->connector_info[j]->connector; |
Daniel Vetter | e04190e | 2012-09-07 10:14:52 +0200 | [diff] [blame] | 444 | connector->funcs->dpms(connector, dpms_mode); |
Rob Clark | 5849556 | 2012-10-11 20:50:56 -0500 | [diff] [blame] | 445 | drm_object_property_set_value(&connector->base, |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 446 | dev->mode_config.dpms_property, dpms_mode); |
Jesse Barnes | 023eb57 | 2010-07-02 10:48:08 -0700 | [diff] [blame] | 447 | } |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 448 | } |
Daniel Vetter | 8484990 | 2012-12-02 00:28:11 +0100 | [diff] [blame] | 449 | drm_modeset_unlock_all(dev); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 450 | } |
| 451 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 452 | /** |
| 453 | * drm_fb_helper_blank - implementation for ->fb_blank |
| 454 | * @blank: desired blanking state |
| 455 | * @info: fbdev registered by the helper |
| 456 | */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 457 | int drm_fb_helper_blank(int blank, struct fb_info *info) |
| 458 | { |
| 459 | switch (blank) { |
James Simmons | 731b5a1 | 2009-10-29 20:39:07 +0000 | [diff] [blame] | 460 | /* Display: On; HSync: On, VSync: On */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 461 | case FB_BLANK_UNBLANK: |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 462 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_ON); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 463 | break; |
James Simmons | 731b5a1 | 2009-10-29 20:39:07 +0000 | [diff] [blame] | 464 | /* Display: Off; HSync: On, VSync: On */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 465 | case FB_BLANK_NORMAL: |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 466 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 467 | break; |
James Simmons | 731b5a1 | 2009-10-29 20:39:07 +0000 | [diff] [blame] | 468 | /* Display: Off; HSync: Off, VSync: On */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 469 | case FB_BLANK_HSYNC_SUSPEND: |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 470 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_STANDBY); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 471 | break; |
James Simmons | 731b5a1 | 2009-10-29 20:39:07 +0000 | [diff] [blame] | 472 | /* Display: Off; HSync: On, VSync: Off */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 473 | case FB_BLANK_VSYNC_SUSPEND: |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 474 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_SUSPEND); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 475 | break; |
James Simmons | 731b5a1 | 2009-10-29 20:39:07 +0000 | [diff] [blame] | 476 | /* Display: Off; HSync: Off, VSync: Off */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 477 | case FB_BLANK_POWERDOWN: |
Sascha Hauer | 3a8148c | 2012-02-01 11:38:24 +0100 | [diff] [blame] | 478 | drm_fb_helper_dpms(info, DRM_MODE_DPMS_OFF); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 479 | break; |
| 480 | } |
| 481 | return 0; |
| 482 | } |
| 483 | EXPORT_SYMBOL(drm_fb_helper_blank); |
| 484 | |
| 485 | static void drm_fb_helper_crtc_free(struct drm_fb_helper *helper) |
| 486 | { |
| 487 | int i; |
| 488 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 489 | for (i = 0; i < helper->connector_count; i++) |
| 490 | kfree(helper->connector_info[i]); |
| 491 | kfree(helper->connector_info); |
Sascha Hauer | a1b7736 | 2012-02-01 11:38:22 +0100 | [diff] [blame] | 492 | for (i = 0; i < helper->crtc_count; i++) { |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 493 | kfree(helper->crtc_info[i].mode_set.connectors); |
Sascha Hauer | a1b7736 | 2012-02-01 11:38:22 +0100 | [diff] [blame] | 494 | if (helper->crtc_info[i].mode_set.mode) |
| 495 | drm_mode_destroy(helper->dev, helper->crtc_info[i].mode_set.mode); |
| 496 | } |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 497 | kfree(helper->crtc_info); |
| 498 | } |
| 499 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 500 | /** |
| 501 | * drm_fb_helper_init - initialize a drm_fb_helper structure |
| 502 | * @dev: drm device |
| 503 | * @fb_helper: driver-allocated fbdev helper structure to initialize |
| 504 | * @crtc_count: maximum number of crtcs to support in this fbdev emulation |
| 505 | * @max_conn_count: max connector count |
| 506 | * |
| 507 | * This allocates the structures for the fbdev helper with the given limits. |
| 508 | * Note that this won't yet touch the hardware (through the driver interfaces) |
| 509 | * nor register the fbdev. This is only done in drm_fb_helper_initial_config() |
| 510 | * to allow driver writes more control over the exact init sequence. |
| 511 | * |
| 512 | * Drivers must set fb_helper->funcs before calling |
| 513 | * drm_fb_helper_initial_config(). |
| 514 | * |
| 515 | * RETURNS: |
| 516 | * Zero if everything went ok, nonzero otherwise. |
| 517 | */ |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 518 | int drm_fb_helper_init(struct drm_device *dev, |
| 519 | struct drm_fb_helper *fb_helper, |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 520 | int crtc_count, int max_conn_count) |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 521 | { |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 522 | struct drm_crtc *crtc; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 523 | int i; |
| 524 | |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 525 | fb_helper->dev = dev; |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 526 | |
| 527 | INIT_LIST_HEAD(&fb_helper->kernel_fb_list); |
| 528 | |
| 529 | fb_helper->crtc_info = kcalloc(crtc_count, sizeof(struct drm_fb_helper_crtc), GFP_KERNEL); |
| 530 | if (!fb_helper->crtc_info) |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 531 | return -ENOMEM; |
| 532 | |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 533 | fb_helper->crtc_count = crtc_count; |
| 534 | fb_helper->connector_info = kcalloc(dev->mode_config.num_connector, sizeof(struct drm_fb_helper_connector *), GFP_KERNEL); |
| 535 | if (!fb_helper->connector_info) { |
| 536 | kfree(fb_helper->crtc_info); |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 537 | return -ENOMEM; |
| 538 | } |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 539 | fb_helper->connector_count = 0; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 540 | |
| 541 | for (i = 0; i < crtc_count; i++) { |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 542 | fb_helper->crtc_info[i].mode_set.connectors = |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 543 | kcalloc(max_conn_count, |
| 544 | sizeof(struct drm_connector *), |
| 545 | GFP_KERNEL); |
| 546 | |
Laurent Pinchart | 4a1b071 | 2012-05-17 13:27:21 +0200 | [diff] [blame] | 547 | if (!fb_helper->crtc_info[i].mode_set.connectors) |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 548 | goto out_free; |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 549 | fb_helper->crtc_info[i].mode_set.num_connectors = 0; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 550 | } |
| 551 | |
| 552 | i = 0; |
| 553 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 554 | fb_helper->crtc_info[i].mode_set.crtc = crtc; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 555 | i++; |
| 556 | } |
Sascha Hauer | e9ad318 | 2012-02-01 11:38:25 +0100 | [diff] [blame] | 557 | |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 558 | return 0; |
| 559 | out_free: |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 560 | drm_fb_helper_crtc_free(fb_helper); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 561 | return -ENOMEM; |
| 562 | } |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 563 | EXPORT_SYMBOL(drm_fb_helper_init); |
| 564 | |
| 565 | void drm_fb_helper_fini(struct drm_fb_helper *fb_helper) |
| 566 | { |
| 567 | if (!list_empty(&fb_helper->kernel_fb_list)) { |
| 568 | list_del(&fb_helper->kernel_fb_list); |
| 569 | if (list_empty(&kernel_fb_helper_list)) { |
Sachin Kamat | d56b1b9 | 2012-11-15 03:43:29 +0000 | [diff] [blame] | 570 | pr_info("drm: unregistered panic notifier\n"); |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 571 | atomic_notifier_chain_unregister(&panic_notifier_list, |
| 572 | &paniced); |
| 573 | unregister_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); |
| 574 | } |
| 575 | } |
| 576 | |
| 577 | drm_fb_helper_crtc_free(fb_helper); |
| 578 | |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 579 | } |
| 580 | EXPORT_SYMBOL(drm_fb_helper_fini); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 581 | |
Dave Airlie | c850cb7 | 2009-10-23 18:49:03 +1000 | [diff] [blame] | 582 | static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green, |
Dave Airlie | b8c00ac | 2009-10-06 13:54:01 +1000 | [diff] [blame] | 583 | u16 blue, u16 regno, struct fb_info *info) |
| 584 | { |
| 585 | struct drm_fb_helper *fb_helper = info->par; |
| 586 | struct drm_framebuffer *fb = fb_helper->fb; |
| 587 | int pindex; |
| 588 | |
Dave Airlie | c850cb7 | 2009-10-23 18:49:03 +1000 | [diff] [blame] | 589 | if (info->fix.visual == FB_VISUAL_TRUECOLOR) { |
| 590 | u32 *palette; |
| 591 | u32 value; |
| 592 | /* place color in psuedopalette */ |
| 593 | if (regno > 16) |
| 594 | return -EINVAL; |
| 595 | palette = (u32 *)info->pseudo_palette; |
| 596 | red >>= (16 - info->var.red.length); |
| 597 | green >>= (16 - info->var.green.length); |
| 598 | blue >>= (16 - info->var.blue.length); |
| 599 | value = (red << info->var.red.offset) | |
| 600 | (green << info->var.green.offset) | |
| 601 | (blue << info->var.blue.offset); |
Rob Clark | 9da12b6a | 2011-02-16 02:45:51 +0000 | [diff] [blame] | 602 | if (info->var.transp.length > 0) { |
| 603 | u32 mask = (1 << info->var.transp.length) - 1; |
| 604 | mask <<= info->var.transp.offset; |
| 605 | value |= mask; |
| 606 | } |
Dave Airlie | c850cb7 | 2009-10-23 18:49:03 +1000 | [diff] [blame] | 607 | palette[regno] = value; |
| 608 | return 0; |
| 609 | } |
| 610 | |
Ville Syrjälä | 04c0c56 | 2013-05-27 20:19:57 +0300 | [diff] [blame] | 611 | /* |
| 612 | * The driver really shouldn't advertise pseudo/directcolor |
| 613 | * visuals if it can't deal with the palette. |
| 614 | */ |
| 615 | if (WARN_ON(!fb_helper->funcs->gamma_set || |
| 616 | !fb_helper->funcs->gamma_get)) |
| 617 | return -EINVAL; |
| 618 | |
Dave Airlie | b8c00ac | 2009-10-06 13:54:01 +1000 | [diff] [blame] | 619 | pindex = regno; |
| 620 | |
| 621 | if (fb->bits_per_pixel == 16) { |
| 622 | pindex = regno << 3; |
| 623 | |
| 624 | if (fb->depth == 16 && regno > 63) |
Dave Airlie | c850cb7 | 2009-10-23 18:49:03 +1000 | [diff] [blame] | 625 | return -EINVAL; |
Dave Airlie | b8c00ac | 2009-10-06 13:54:01 +1000 | [diff] [blame] | 626 | if (fb->depth == 15 && regno > 31) |
Dave Airlie | c850cb7 | 2009-10-23 18:49:03 +1000 | [diff] [blame] | 627 | return -EINVAL; |
Dave Airlie | b8c00ac | 2009-10-06 13:54:01 +1000 | [diff] [blame] | 628 | |
| 629 | if (fb->depth == 16) { |
| 630 | u16 r, g, b; |
| 631 | int i; |
| 632 | if (regno < 32) { |
| 633 | for (i = 0; i < 8; i++) |
| 634 | fb_helper->funcs->gamma_set(crtc, red, |
| 635 | green, blue, pindex + i); |
| 636 | } |
| 637 | |
| 638 | fb_helper->funcs->gamma_get(crtc, &r, |
| 639 | &g, &b, |
| 640 | pindex >> 1); |
| 641 | |
| 642 | for (i = 0; i < 4; i++) |
| 643 | fb_helper->funcs->gamma_set(crtc, r, |
| 644 | green, b, |
| 645 | (pindex >> 1) + i); |
| 646 | } |
| 647 | } |
| 648 | |
| 649 | if (fb->depth != 16) |
| 650 | fb_helper->funcs->gamma_set(crtc, red, green, blue, pindex); |
Dave Airlie | c850cb7 | 2009-10-23 18:49:03 +1000 | [diff] [blame] | 651 | return 0; |
Dave Airlie | b8c00ac | 2009-10-06 13:54:01 +1000 | [diff] [blame] | 652 | } |
| 653 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 654 | /** |
| 655 | * drm_fb_helper_setcmap - implementation for ->fb_setcmap |
| 656 | * @cmap: cmap to set |
| 657 | * @info: fbdev registered by the helper |
| 658 | */ |
Dave Airlie | 068143d | 2009-10-05 09:58:02 +1000 | [diff] [blame] | 659 | int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info) |
| 660 | { |
| 661 | struct drm_fb_helper *fb_helper = info->par; |
Ville Syrjälä | 8391a3d | 2013-05-27 20:19:56 +0300 | [diff] [blame] | 662 | struct drm_device *dev = fb_helper->dev; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 663 | struct drm_crtc_helper_funcs *crtc_funcs; |
Dave Airlie | 068143d | 2009-10-05 09:58:02 +1000 | [diff] [blame] | 664 | u16 *red, *green, *blue, *transp; |
| 665 | struct drm_crtc *crtc; |
roel | 062ac62 | 2011-03-07 18:00:34 +0100 | [diff] [blame] | 666 | int i, j, rc = 0; |
Dave Airlie | 068143d | 2009-10-05 09:58:02 +1000 | [diff] [blame] | 667 | int start; |
| 668 | |
Ville Syrjälä | 8391a3d | 2013-05-27 20:19:56 +0300 | [diff] [blame] | 669 | drm_modeset_lock_all(dev); |
| 670 | if (!drm_fb_helper_is_bound(fb_helper)) { |
| 671 | drm_modeset_unlock_all(dev); |
| 672 | return -EBUSY; |
| 673 | } |
| 674 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 675 | for (i = 0; i < fb_helper->crtc_count; i++) { |
| 676 | crtc = fb_helper->crtc_info[i].mode_set.crtc; |
| 677 | crtc_funcs = crtc->helper_private; |
Dave Airlie | 068143d | 2009-10-05 09:58:02 +1000 | [diff] [blame] | 678 | |
| 679 | red = cmap->red; |
| 680 | green = cmap->green; |
| 681 | blue = cmap->blue; |
| 682 | transp = cmap->transp; |
| 683 | start = cmap->start; |
| 684 | |
roel | 062ac62 | 2011-03-07 18:00:34 +0100 | [diff] [blame] | 685 | for (j = 0; j < cmap->len; j++) { |
Dave Airlie | 068143d | 2009-10-05 09:58:02 +1000 | [diff] [blame] | 686 | u16 hred, hgreen, hblue, htransp = 0xffff; |
| 687 | |
| 688 | hred = *red++; |
| 689 | hgreen = *green++; |
| 690 | hblue = *blue++; |
| 691 | |
| 692 | if (transp) |
| 693 | htransp = *transp++; |
| 694 | |
Dave Airlie | c850cb7 | 2009-10-23 18:49:03 +1000 | [diff] [blame] | 695 | rc = setcolreg(crtc, hred, hgreen, hblue, start++, info); |
| 696 | if (rc) |
Ville Syrjälä | 8391a3d | 2013-05-27 20:19:56 +0300 | [diff] [blame] | 697 | goto out; |
Dave Airlie | 068143d | 2009-10-05 09:58:02 +1000 | [diff] [blame] | 698 | } |
Ville Syrjälä | 04c0c56 | 2013-05-27 20:19:57 +0300 | [diff] [blame] | 699 | if (crtc_funcs->load_lut) |
| 700 | crtc_funcs->load_lut(crtc); |
Dave Airlie | 068143d | 2009-10-05 09:58:02 +1000 | [diff] [blame] | 701 | } |
Ville Syrjälä | 8391a3d | 2013-05-27 20:19:56 +0300 | [diff] [blame] | 702 | out: |
| 703 | drm_modeset_unlock_all(dev); |
Dave Airlie | 068143d | 2009-10-05 09:58:02 +1000 | [diff] [blame] | 704 | return rc; |
| 705 | } |
| 706 | EXPORT_SYMBOL(drm_fb_helper_setcmap); |
| 707 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 708 | /** |
| 709 | * drm_fb_helper_check_var - implementation for ->fb_check_var |
| 710 | * @var: screeninfo to check |
| 711 | * @info: fbdev registered by the helper |
| 712 | */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 713 | int drm_fb_helper_check_var(struct fb_var_screeninfo *var, |
| 714 | struct fb_info *info) |
| 715 | { |
| 716 | struct drm_fb_helper *fb_helper = info->par; |
| 717 | struct drm_framebuffer *fb = fb_helper->fb; |
| 718 | int depth; |
| 719 | |
Jason Wessel | f90ebd9 | 2010-08-05 09:22:32 -0500 | [diff] [blame] | 720 | if (var->pixclock != 0 || in_dbg_master()) |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 721 | return -EINVAL; |
| 722 | |
| 723 | /* Need to resize the fb object !!! */ |
Chris Wilson | 62fb376 | 2012-03-26 21:15:53 +0100 | [diff] [blame] | 724 | if (var->bits_per_pixel > fb->bits_per_pixel || |
| 725 | var->xres > fb->width || var->yres > fb->height || |
| 726 | var->xres_virtual > fb->width || var->yres_virtual > fb->height) { |
Dave Airlie | 509c7d8 | 2010-01-08 09:27:08 +1000 | [diff] [blame] | 727 | DRM_DEBUG("fb userspace requested width/height/bpp is greater than current fb " |
Chris Wilson | 62fb376 | 2012-03-26 21:15:53 +0100 | [diff] [blame] | 728 | "request %dx%d-%d (virtual %dx%d) > %dx%d-%d\n", |
| 729 | var->xres, var->yres, var->bits_per_pixel, |
| 730 | var->xres_virtual, var->yres_virtual, |
Dave Airlie | 509c7d8 | 2010-01-08 09:27:08 +1000 | [diff] [blame] | 731 | fb->width, fb->height, fb->bits_per_pixel); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 732 | return -EINVAL; |
| 733 | } |
| 734 | |
| 735 | switch (var->bits_per_pixel) { |
| 736 | case 16: |
| 737 | depth = (var->green.length == 6) ? 16 : 15; |
| 738 | break; |
| 739 | case 32: |
| 740 | depth = (var->transp.length > 0) ? 32 : 24; |
| 741 | break; |
| 742 | default: |
| 743 | depth = var->bits_per_pixel; |
| 744 | break; |
| 745 | } |
| 746 | |
| 747 | switch (depth) { |
| 748 | case 8: |
| 749 | var->red.offset = 0; |
| 750 | var->green.offset = 0; |
| 751 | var->blue.offset = 0; |
| 752 | var->red.length = 8; |
| 753 | var->green.length = 8; |
| 754 | var->blue.length = 8; |
| 755 | var->transp.length = 0; |
| 756 | var->transp.offset = 0; |
| 757 | break; |
| 758 | case 15: |
| 759 | var->red.offset = 10; |
| 760 | var->green.offset = 5; |
| 761 | var->blue.offset = 0; |
| 762 | var->red.length = 5; |
| 763 | var->green.length = 5; |
| 764 | var->blue.length = 5; |
| 765 | var->transp.length = 1; |
| 766 | var->transp.offset = 15; |
| 767 | break; |
| 768 | case 16: |
| 769 | var->red.offset = 11; |
| 770 | var->green.offset = 5; |
| 771 | var->blue.offset = 0; |
| 772 | var->red.length = 5; |
| 773 | var->green.length = 6; |
| 774 | var->blue.length = 5; |
| 775 | var->transp.length = 0; |
| 776 | var->transp.offset = 0; |
| 777 | break; |
| 778 | case 24: |
| 779 | var->red.offset = 16; |
| 780 | var->green.offset = 8; |
| 781 | var->blue.offset = 0; |
| 782 | var->red.length = 8; |
| 783 | var->green.length = 8; |
| 784 | var->blue.length = 8; |
| 785 | var->transp.length = 0; |
| 786 | var->transp.offset = 0; |
| 787 | break; |
| 788 | case 32: |
| 789 | var->red.offset = 16; |
| 790 | var->green.offset = 8; |
| 791 | var->blue.offset = 0; |
| 792 | var->red.length = 8; |
| 793 | var->green.length = 8; |
| 794 | var->blue.length = 8; |
| 795 | var->transp.length = 8; |
| 796 | var->transp.offset = 24; |
| 797 | break; |
| 798 | default: |
| 799 | return -EINVAL; |
| 800 | } |
| 801 | return 0; |
| 802 | } |
| 803 | EXPORT_SYMBOL(drm_fb_helper_check_var); |
| 804 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 805 | /** |
| 806 | * drm_fb_helper_set_par - implementation for ->fb_set_par |
| 807 | * @info: fbdev registered by the helper |
| 808 | * |
| 809 | * This will let fbcon do the mode init and is called at initialization time by |
| 810 | * the fbdev core when registering the driver, and later on through the hotplug |
| 811 | * callback. |
| 812 | */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 813 | int drm_fb_helper_set_par(struct fb_info *info) |
| 814 | { |
| 815 | struct drm_fb_helper *fb_helper = info->par; |
| 816 | struct drm_device *dev = fb_helper->dev; |
| 817 | struct fb_var_screeninfo *var = &info->var; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 818 | int ret; |
| 819 | int i; |
| 820 | |
Clemens Ladisch | 5349ef3 | 2009-11-04 09:42:52 +0100 | [diff] [blame] | 821 | if (var->pixclock != 0) { |
Pavel Roskin | 172e91f | 2010-02-11 14:31:32 +1000 | [diff] [blame] | 822 | DRM_ERROR("PIXEL CLOCK SET\n"); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 823 | return -EINVAL; |
| 824 | } |
| 825 | |
Daniel Vetter | 8484990 | 2012-12-02 00:28:11 +0100 | [diff] [blame] | 826 | drm_modeset_lock_all(dev); |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 827 | for (i = 0; i < fb_helper->crtc_count; i++) { |
Daniel Vetter | 2d13b67 | 2012-12-11 13:47:23 +0100 | [diff] [blame] | 828 | ret = drm_mode_set_config_internal(&fb_helper->crtc_info[i].mode_set); |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 829 | if (ret) { |
Daniel Vetter | 8484990 | 2012-12-02 00:28:11 +0100 | [diff] [blame] | 830 | drm_modeset_unlock_all(dev); |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 831 | return ret; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 832 | } |
| 833 | } |
Daniel Vetter | 8484990 | 2012-12-02 00:28:11 +0100 | [diff] [blame] | 834 | drm_modeset_unlock_all(dev); |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 835 | |
| 836 | if (fb_helper->delayed_hotplug) { |
| 837 | fb_helper->delayed_hotplug = false; |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 838 | drm_fb_helper_hotplug_event(fb_helper); |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 839 | } |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 840 | return 0; |
| 841 | } |
| 842 | EXPORT_SYMBOL(drm_fb_helper_set_par); |
| 843 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 844 | /** |
| 845 | * drm_fb_helper_pan_display - implementation for ->fb_pan_display |
| 846 | * @var: updated screen information |
| 847 | * @info: fbdev registered by the helper |
| 848 | */ |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 849 | int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, |
| 850 | struct fb_info *info) |
| 851 | { |
| 852 | struct drm_fb_helper *fb_helper = info->par; |
| 853 | struct drm_device *dev = fb_helper->dev; |
| 854 | struct drm_mode_set *modeset; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 855 | int ret = 0; |
| 856 | int i; |
| 857 | |
Daniel Vetter | 8484990 | 2012-12-02 00:28:11 +0100 | [diff] [blame] | 858 | drm_modeset_lock_all(dev); |
Daniel Vetter | 20c60c3 | 2012-12-17 12:13:23 +0100 | [diff] [blame] | 859 | if (!drm_fb_helper_is_bound(fb_helper)) { |
| 860 | drm_modeset_unlock_all(dev); |
| 861 | return -EBUSY; |
| 862 | } |
| 863 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 864 | for (i = 0; i < fb_helper->crtc_count; i++) { |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 865 | modeset = &fb_helper->crtc_info[i].mode_set; |
| 866 | |
| 867 | modeset->x = var->xoffset; |
| 868 | modeset->y = var->yoffset; |
| 869 | |
| 870 | if (modeset->num_connectors) { |
Daniel Vetter | 2d13b67 | 2012-12-11 13:47:23 +0100 | [diff] [blame] | 871 | ret = drm_mode_set_config_internal(modeset); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 872 | if (!ret) { |
| 873 | info->var.xoffset = var->xoffset; |
| 874 | info->var.yoffset = var->yoffset; |
| 875 | } |
| 876 | } |
| 877 | } |
Daniel Vetter | 8484990 | 2012-12-02 00:28:11 +0100 | [diff] [blame] | 878 | drm_modeset_unlock_all(dev); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 879 | return ret; |
| 880 | } |
| 881 | EXPORT_SYMBOL(drm_fb_helper_pan_display); |
| 882 | |
Daniel Vetter | 8acf658 | 2013-01-21 23:38:37 +0100 | [diff] [blame] | 883 | /* |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 884 | * Allocates the backing storage and sets up the fbdev info structure through |
| 885 | * the ->fb_probe callback and then registers the fbdev and sets up the panic |
| 886 | * notifier. |
Daniel Vetter | 8acf658 | 2013-01-21 23:38:37 +0100 | [diff] [blame] | 887 | */ |
Daniel Vetter | de1ace5 | 2013-01-20 21:50:49 +0100 | [diff] [blame] | 888 | static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper, |
| 889 | int preferred_bpp) |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 890 | { |
Daniel Vetter | 8acf658 | 2013-01-21 23:38:37 +0100 | [diff] [blame] | 891 | int ret = 0; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 892 | int crtc_count = 0; |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 893 | int i; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 894 | struct fb_info *info; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 895 | struct drm_fb_helper_surface_size sizes; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 896 | int gamma_size = 0; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 897 | |
| 898 | memset(&sizes, 0, sizeof(struct drm_fb_helper_surface_size)); |
| 899 | sizes.surface_depth = 24; |
| 900 | sizes.surface_bpp = 32; |
| 901 | sizes.fb_width = (unsigned)-1; |
| 902 | sizes.fb_height = (unsigned)-1; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 903 | |
Dave Airlie | b8c00ac | 2009-10-06 13:54:01 +1000 | [diff] [blame] | 904 | /* if driver picks 8 or 16 by default use that |
| 905 | for both depth/bpp */ |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 906 | if (preferred_bpp != sizes.surface_bpp) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 907 | sizes.surface_depth = sizes.surface_bpp = preferred_bpp; |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 908 | |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 909 | /* first up get a count of crtcs now in use and new min/maxes width/heights */ |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 910 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 911 | struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i]; |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 912 | struct drm_cmdline_mode *cmdline_mode; |
Dave Airlie | 8ef8678 | 2009-09-26 06:39:00 +1000 | [diff] [blame] | 913 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 914 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 915 | |
| 916 | if (cmdline_mode->bpp_specified) { |
| 917 | switch (cmdline_mode->bpp) { |
| 918 | case 8: |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 919 | sizes.surface_depth = sizes.surface_bpp = 8; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 920 | break; |
| 921 | case 15: |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 922 | sizes.surface_depth = 15; |
| 923 | sizes.surface_bpp = 16; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 924 | break; |
| 925 | case 16: |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 926 | sizes.surface_depth = sizes.surface_bpp = 16; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 927 | break; |
| 928 | case 24: |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 929 | sizes.surface_depth = sizes.surface_bpp = 24; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 930 | break; |
| 931 | case 32: |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 932 | sizes.surface_depth = 24; |
| 933 | sizes.surface_bpp = 32; |
Dave Airlie | d50ba25 | 2009-09-23 14:44:08 +1000 | [diff] [blame] | 934 | break; |
| 935 | } |
| 936 | break; |
| 937 | } |
| 938 | } |
| 939 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 940 | crtc_count = 0; |
| 941 | for (i = 0; i < fb_helper->crtc_count; i++) { |
| 942 | struct drm_display_mode *desired_mode; |
| 943 | desired_mode = fb_helper->crtc_info[i].desired_mode; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 944 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 945 | if (desired_mode) { |
| 946 | if (gamma_size == 0) |
| 947 | gamma_size = fb_helper->crtc_info[i].mode_set.crtc->gamma_size; |
| 948 | if (desired_mode->hdisplay < sizes.fb_width) |
| 949 | sizes.fb_width = desired_mode->hdisplay; |
| 950 | if (desired_mode->vdisplay < sizes.fb_height) |
| 951 | sizes.fb_height = desired_mode->vdisplay; |
| 952 | if (desired_mode->hdisplay > sizes.surface_width) |
| 953 | sizes.surface_width = desired_mode->hdisplay; |
| 954 | if (desired_mode->vdisplay > sizes.surface_height) |
| 955 | sizes.surface_height = desired_mode->vdisplay; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 956 | crtc_count++; |
| 957 | } |
| 958 | } |
| 959 | |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 960 | if (crtc_count == 0 || sizes.fb_width == -1 || sizes.fb_height == -1) { |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 961 | /* hmm everyone went away - assume VGA cable just fell out |
| 962 | and will come back later. */ |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 963 | DRM_INFO("Cannot find any crtc or sizes - going 1024x768\n"); |
Dave Airlie | 19b4b44 | 2010-03-30 05:34:16 +0000 | [diff] [blame] | 964 | sizes.fb_width = sizes.surface_width = 1024; |
| 965 | sizes.fb_height = sizes.surface_height = 768; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 966 | } |
| 967 | |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 968 | /* push down into drivers */ |
Daniel Vetter | 8acf658 | 2013-01-21 23:38:37 +0100 | [diff] [blame] | 969 | ret = (*fb_helper->funcs->fb_probe)(fb_helper, &sizes); |
| 970 | if (ret < 0) |
| 971 | return ret; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 972 | |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 973 | info = fb_helper->fbdev; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 974 | |
Daniel Vetter | 7e53f3a | 2013-01-21 10:52:17 +0100 | [diff] [blame] | 975 | /* |
| 976 | * Set the fb pointer - usually drm_setup_crtcs does this for hotplug |
| 977 | * events, but at init time drm_setup_crtcs needs to be called before |
| 978 | * the fb is allocated (since we need to figure out the desired size of |
| 979 | * the fb before we can allocate it ...). Hence we need to fix things up |
| 980 | * here again. |
| 981 | */ |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 982 | for (i = 0; i < fb_helper->crtc_count; i++) |
Daniel Vetter | 7e53f3a | 2013-01-21 10:52:17 +0100 | [diff] [blame] | 983 | if (fb_helper->crtc_info[i].mode_set.num_connectors) |
| 984 | fb_helper->crtc_info[i].mode_set.fb = fb_helper->fb; |
| 985 | |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 986 | |
Daniel Vetter | 8acf658 | 2013-01-21 23:38:37 +0100 | [diff] [blame] | 987 | info->var.pixclock = 0; |
| 988 | if (register_framebuffer(info) < 0) |
| 989 | return -EINVAL; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 990 | |
Daniel Vetter | 8acf658 | 2013-01-21 23:38:37 +0100 | [diff] [blame] | 991 | dev_info(fb_helper->dev->dev, "fb%d: %s frame buffer device\n", |
| 992 | info->node, info->fix.id); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 993 | |
| 994 | /* Switch back to kernel console on panic */ |
| 995 | /* multi card linked list maybe */ |
| 996 | if (list_empty(&kernel_fb_helper_list)) { |
Sachin Kamat | d56b1b9 | 2012-11-15 03:43:29 +0000 | [diff] [blame] | 997 | dev_info(fb_helper->dev->dev, "registered panic notifier\n"); |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 998 | atomic_notifier_chain_register(&panic_notifier_list, |
| 999 | &paniced); |
| 1000 | register_sysrq_key('v', &sysrq_drm_fb_helper_restore_op); |
| 1001 | } |
Daniel Vetter | 8acf658 | 2013-01-21 23:38:37 +0100 | [diff] [blame] | 1002 | |
| 1003 | list_add(&fb_helper->kernel_fb_list, &kernel_fb_helper_list); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1004 | |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 1005 | return 0; |
| 1006 | } |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 1007 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 1008 | /** |
| 1009 | * drm_fb_helper_fill_fix - initializes fixed fbdev information |
| 1010 | * @info: fbdev registered by the helper |
| 1011 | * @pitch: desired pitch |
| 1012 | * @depth: desired depth |
| 1013 | * |
| 1014 | * Helper to fill in the fixed fbdev information useful for a non-accelerated |
| 1015 | * fbdev emulations. Drivers which support acceleration methods which impose |
| 1016 | * additional constraints need to set up their own limits. |
| 1017 | * |
| 1018 | * Drivers should call this (or their equivalent setup code) from their |
| 1019 | * ->fb_probe callback. |
| 1020 | */ |
Dave Airlie | 3632ef8 | 2011-01-15 09:27:00 +1000 | [diff] [blame] | 1021 | void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, |
| 1022 | uint32_t depth) |
| 1023 | { |
| 1024 | info->fix.type = FB_TYPE_PACKED_PIXELS; |
| 1025 | info->fix.visual = depth == 8 ? FB_VISUAL_PSEUDOCOLOR : |
| 1026 | FB_VISUAL_TRUECOLOR; |
| 1027 | info->fix.mmio_start = 0; |
| 1028 | info->fix.mmio_len = 0; |
| 1029 | info->fix.type_aux = 0; |
| 1030 | info->fix.xpanstep = 1; /* doing it in hw */ |
| 1031 | info->fix.ypanstep = 1; /* doing it in hw */ |
| 1032 | info->fix.ywrapstep = 0; |
| 1033 | info->fix.accel = FB_ACCEL_NONE; |
| 1034 | info->fix.type_aux = 0; |
| 1035 | |
| 1036 | info->fix.line_length = pitch; |
| 1037 | return; |
| 1038 | } |
| 1039 | EXPORT_SYMBOL(drm_fb_helper_fill_fix); |
| 1040 | |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 1041 | /** |
| 1042 | * drm_fb_helper_fill_var - initalizes variable fbdev information |
| 1043 | * @info: fbdev instance to set up |
| 1044 | * @fb_helper: fb helper instance to use as template |
| 1045 | * @fb_width: desired fb width |
| 1046 | * @fb_height: desired fb height |
| 1047 | * |
| 1048 | * Sets up the variable fbdev metainformation from the given fb helper instance |
| 1049 | * and the drm framebuffer allocated in fb_helper->fb. |
| 1050 | * |
| 1051 | * Drivers should call this (or their equivalent setup code) from their |
| 1052 | * ->fb_probe callback after having allocated the fbdev backing |
| 1053 | * storage framebuffer. |
| 1054 | */ |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1055 | void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 1056 | uint32_t fb_width, uint32_t fb_height) |
| 1057 | { |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1058 | struct drm_framebuffer *fb = fb_helper->fb; |
| 1059 | info->pseudo_palette = fb_helper->pseudo_palette; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 1060 | info->var.xres_virtual = fb->width; |
| 1061 | info->var.yres_virtual = fb->height; |
| 1062 | info->var.bits_per_pixel = fb->bits_per_pixel; |
James Simmons | 57084d0 | 2010-12-20 19:10:39 +0000 | [diff] [blame] | 1063 | info->var.accel_flags = FB_ACCELF_TEXT; |
Dave Airlie | 785b93e | 2009-08-28 15:46:53 +1000 | [diff] [blame] | 1064 | info->var.xoffset = 0; |
| 1065 | info->var.yoffset = 0; |
| 1066 | info->var.activate = FB_ACTIVATE_NOW; |
| 1067 | info->var.height = -1; |
| 1068 | info->var.width = -1; |
| 1069 | |
| 1070 | switch (fb->depth) { |
| 1071 | case 8: |
| 1072 | info->var.red.offset = 0; |
| 1073 | info->var.green.offset = 0; |
| 1074 | info->var.blue.offset = 0; |
| 1075 | info->var.red.length = 8; /* 8bit DAC */ |
| 1076 | info->var.green.length = 8; |
| 1077 | info->var.blue.length = 8; |
| 1078 | info->var.transp.offset = 0; |
| 1079 | info->var.transp.length = 0; |
| 1080 | break; |
| 1081 | case 15: |
| 1082 | info->var.red.offset = 10; |
| 1083 | info->var.green.offset = 5; |
| 1084 | info->var.blue.offset = 0; |
| 1085 | info->var.red.length = 5; |
| 1086 | info->var.green.length = 5; |
| 1087 | info->var.blue.length = 5; |
| 1088 | info->var.transp.offset = 15; |
| 1089 | info->var.transp.length = 1; |
| 1090 | break; |
| 1091 | case 16: |
| 1092 | info->var.red.offset = 11; |
| 1093 | info->var.green.offset = 5; |
| 1094 | info->var.blue.offset = 0; |
| 1095 | info->var.red.length = 5; |
| 1096 | info->var.green.length = 6; |
| 1097 | info->var.blue.length = 5; |
| 1098 | info->var.transp.offset = 0; |
| 1099 | break; |
| 1100 | case 24: |
| 1101 | info->var.red.offset = 16; |
| 1102 | info->var.green.offset = 8; |
| 1103 | info->var.blue.offset = 0; |
| 1104 | info->var.red.length = 8; |
| 1105 | info->var.green.length = 8; |
| 1106 | info->var.blue.length = 8; |
| 1107 | info->var.transp.offset = 0; |
| 1108 | info->var.transp.length = 0; |
| 1109 | break; |
| 1110 | case 32: |
| 1111 | info->var.red.offset = 16; |
| 1112 | info->var.green.offset = 8; |
| 1113 | info->var.blue.offset = 0; |
| 1114 | info->var.red.length = 8; |
| 1115 | info->var.green.length = 8; |
| 1116 | info->var.blue.length = 8; |
| 1117 | info->var.transp.offset = 24; |
| 1118 | info->var.transp.length = 8; |
| 1119 | break; |
| 1120 | default: |
| 1121 | break; |
| 1122 | } |
| 1123 | |
| 1124 | info->var.xres = fb_width; |
| 1125 | info->var.yres = fb_height; |
| 1126 | } |
| 1127 | EXPORT_SYMBOL(drm_fb_helper_fill_var); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1128 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1129 | static int drm_fb_helper_probe_connector_modes(struct drm_fb_helper *fb_helper, |
| 1130 | uint32_t maxX, |
| 1131 | uint32_t maxY) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1132 | { |
| 1133 | struct drm_connector *connector; |
| 1134 | int count = 0; |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1135 | int i; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1136 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1137 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 1138 | connector = fb_helper->connector_info[i]->connector; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1139 | count += connector->funcs->fill_modes(connector, maxX, maxY); |
| 1140 | } |
| 1141 | |
| 1142 | return count; |
| 1143 | } |
| 1144 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1145 | static struct drm_display_mode *drm_has_preferred_mode(struct drm_fb_helper_connector *fb_connector, int width, int height) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1146 | { |
| 1147 | struct drm_display_mode *mode; |
| 1148 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1149 | list_for_each_entry(mode, &fb_connector->connector->modes, head) { |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1150 | if (drm_mode_width(mode) > width || |
| 1151 | drm_mode_height(mode) > height) |
| 1152 | continue; |
| 1153 | if (mode->type & DRM_MODE_TYPE_PREFERRED) |
| 1154 | return mode; |
| 1155 | } |
| 1156 | return NULL; |
| 1157 | } |
| 1158 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1159 | static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1160 | { |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1161 | struct drm_cmdline_mode *cmdline_mode; |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1162 | cmdline_mode = &fb_connector->cmdline_mode; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1163 | return cmdline_mode->specified; |
| 1164 | } |
| 1165 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1166 | static struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn, |
| 1167 | int width, int height) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1168 | { |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1169 | struct drm_cmdline_mode *cmdline_mode; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1170 | struct drm_display_mode *mode = NULL; |
| 1171 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1172 | cmdline_mode = &fb_helper_conn->cmdline_mode; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1173 | if (cmdline_mode->specified == false) |
| 1174 | return mode; |
| 1175 | |
| 1176 | /* attempt to find a matching mode in the list of modes |
| 1177 | * we have gotten so far, if not add a CVT mode that conforms |
| 1178 | */ |
| 1179 | if (cmdline_mode->rb || cmdline_mode->margins) |
| 1180 | goto create_mode; |
| 1181 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1182 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1183 | /* check width/height */ |
| 1184 | if (mode->hdisplay != cmdline_mode->xres || |
| 1185 | mode->vdisplay != cmdline_mode->yres) |
| 1186 | continue; |
| 1187 | |
| 1188 | if (cmdline_mode->refresh_specified) { |
| 1189 | if (mode->vrefresh != cmdline_mode->refresh) |
| 1190 | continue; |
| 1191 | } |
| 1192 | |
| 1193 | if (cmdline_mode->interlace) { |
| 1194 | if (!(mode->flags & DRM_MODE_FLAG_INTERLACE)) |
| 1195 | continue; |
| 1196 | } |
| 1197 | return mode; |
| 1198 | } |
| 1199 | |
| 1200 | create_mode: |
Chris Wilson | 1794d25 | 2011-04-17 07:43:32 +0100 | [diff] [blame] | 1201 | mode = drm_mode_create_from_cmdline_mode(fb_helper_conn->connector->dev, |
| 1202 | cmdline_mode); |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1203 | list_add(&mode->head, &fb_helper_conn->connector->modes); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1204 | return mode; |
| 1205 | } |
| 1206 | |
| 1207 | static bool drm_connector_enabled(struct drm_connector *connector, bool strict) |
| 1208 | { |
| 1209 | bool enable; |
| 1210 | |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 1211 | if (strict) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1212 | enable = connector->status == connector_status_connected; |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 1213 | else |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1214 | enable = connector->status != connector_status_disconnected; |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 1215 | |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1216 | return enable; |
| 1217 | } |
| 1218 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1219 | static void drm_enable_connectors(struct drm_fb_helper *fb_helper, |
| 1220 | bool *enabled) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1221 | { |
| 1222 | bool any_enabled = false; |
| 1223 | struct drm_connector *connector; |
| 1224 | int i = 0; |
| 1225 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1226 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 1227 | connector = fb_helper->connector_info[i]->connector; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1228 | enabled[i] = drm_connector_enabled(connector, true); |
| 1229 | DRM_DEBUG_KMS("connector %d enabled? %s\n", connector->base.id, |
| 1230 | enabled[i] ? "yes" : "no"); |
| 1231 | any_enabled |= enabled[i]; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1232 | } |
| 1233 | |
| 1234 | if (any_enabled) |
| 1235 | return; |
| 1236 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1237 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 1238 | connector = fb_helper->connector_info[i]->connector; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1239 | enabled[i] = drm_connector_enabled(connector, false); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1240 | } |
| 1241 | } |
| 1242 | |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 1243 | static bool drm_target_cloned(struct drm_fb_helper *fb_helper, |
| 1244 | struct drm_display_mode **modes, |
| 1245 | bool *enabled, int width, int height) |
| 1246 | { |
| 1247 | int count, i, j; |
| 1248 | bool can_clone = false; |
| 1249 | struct drm_fb_helper_connector *fb_helper_conn; |
| 1250 | struct drm_display_mode *dmt_mode, *mode; |
| 1251 | |
| 1252 | /* only contemplate cloning in the single crtc case */ |
| 1253 | if (fb_helper->crtc_count > 1) |
| 1254 | return false; |
| 1255 | |
| 1256 | count = 0; |
| 1257 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 1258 | if (enabled[i]) |
| 1259 | count++; |
| 1260 | } |
| 1261 | |
| 1262 | /* only contemplate cloning if more than one connector is enabled */ |
| 1263 | if (count <= 1) |
| 1264 | return false; |
| 1265 | |
| 1266 | /* check the command line or if nothing common pick 1024x768 */ |
| 1267 | can_clone = true; |
| 1268 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 1269 | if (!enabled[i]) |
| 1270 | continue; |
| 1271 | fb_helper_conn = fb_helper->connector_info[i]; |
| 1272 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
| 1273 | if (!modes[i]) { |
| 1274 | can_clone = false; |
| 1275 | break; |
| 1276 | } |
| 1277 | for (j = 0; j < i; j++) { |
| 1278 | if (!enabled[j]) |
| 1279 | continue; |
| 1280 | if (!drm_mode_equal(modes[j], modes[i])) |
| 1281 | can_clone = false; |
| 1282 | } |
| 1283 | } |
| 1284 | |
| 1285 | if (can_clone) { |
| 1286 | DRM_DEBUG_KMS("can clone using command line\n"); |
| 1287 | return true; |
| 1288 | } |
| 1289 | |
| 1290 | /* try and find a 1024x768 mode on each connector */ |
| 1291 | can_clone = true; |
Adam Jackson | f6e252b | 2012-04-13 16:33:31 -0400 | [diff] [blame] | 1292 | dmt_mode = drm_mode_find_dmt(fb_helper->dev, 1024, 768, 60, false); |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 1293 | |
| 1294 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 1295 | |
| 1296 | if (!enabled[i]) |
| 1297 | continue; |
| 1298 | |
| 1299 | fb_helper_conn = fb_helper->connector_info[i]; |
| 1300 | list_for_each_entry(mode, &fb_helper_conn->connector->modes, head) { |
| 1301 | if (drm_mode_equal(mode, dmt_mode)) |
| 1302 | modes[i] = mode; |
| 1303 | } |
| 1304 | if (!modes[i]) |
| 1305 | can_clone = false; |
| 1306 | } |
| 1307 | |
| 1308 | if (can_clone) { |
| 1309 | DRM_DEBUG_KMS("can clone using 1024x768\n"); |
| 1310 | return true; |
| 1311 | } |
| 1312 | DRM_INFO("kms: can't enable cloning when we probably wanted to.\n"); |
| 1313 | return false; |
| 1314 | } |
| 1315 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1316 | static bool drm_target_preferred(struct drm_fb_helper *fb_helper, |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1317 | struct drm_display_mode **modes, |
| 1318 | bool *enabled, int width, int height) |
| 1319 | { |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1320 | struct drm_fb_helper_connector *fb_helper_conn; |
| 1321 | int i; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1322 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1323 | for (i = 0; i < fb_helper->connector_count; i++) { |
| 1324 | fb_helper_conn = fb_helper->connector_info[i]; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1325 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1326 | if (enabled[i] == false) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1327 | continue; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1328 | |
| 1329 | DRM_DEBUG_KMS("looking for cmdline mode on connector %d\n", |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1330 | fb_helper_conn->connector->base.id); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1331 | |
| 1332 | /* got for command line mode first */ |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1333 | modes[i] = drm_pick_cmdline_mode(fb_helper_conn, width, height); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1334 | if (!modes[i]) { |
| 1335 | DRM_DEBUG_KMS("looking for preferred mode on connector %d\n", |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1336 | fb_helper_conn->connector->base.id); |
| 1337 | modes[i] = drm_has_preferred_mode(fb_helper_conn, width, height); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1338 | } |
| 1339 | /* No preferred modes, pick one off the list */ |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1340 | if (!modes[i] && !list_empty(&fb_helper_conn->connector->modes)) { |
| 1341 | list_for_each_entry(modes[i], &fb_helper_conn->connector->modes, head) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1342 | break; |
| 1343 | } |
| 1344 | DRM_DEBUG_KMS("found mode %s\n", modes[i] ? modes[i]->name : |
| 1345 | "none"); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1346 | } |
| 1347 | return true; |
| 1348 | } |
| 1349 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1350 | static int drm_pick_crtcs(struct drm_fb_helper *fb_helper, |
| 1351 | struct drm_fb_helper_crtc **best_crtcs, |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1352 | struct drm_display_mode **modes, |
| 1353 | int n, int width, int height) |
| 1354 | { |
| 1355 | int c, o; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1356 | struct drm_device *dev = fb_helper->dev; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1357 | struct drm_connector *connector; |
| 1358 | struct drm_connector_helper_funcs *connector_funcs; |
| 1359 | struct drm_encoder *encoder; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1360 | int my_score, best_score, score; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1361 | struct drm_fb_helper_crtc **crtcs, *crtc; |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1362 | struct drm_fb_helper_connector *fb_helper_conn; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1363 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1364 | if (n == fb_helper->connector_count) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1365 | return 0; |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1366 | |
| 1367 | fb_helper_conn = fb_helper->connector_info[n]; |
| 1368 | connector = fb_helper_conn->connector; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1369 | |
| 1370 | best_crtcs[n] = NULL; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1371 | best_score = drm_pick_crtcs(fb_helper, best_crtcs, modes, n+1, width, height); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1372 | if (modes[n] == NULL) |
| 1373 | return best_score; |
| 1374 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1375 | crtcs = kzalloc(dev->mode_config.num_connector * |
| 1376 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1377 | if (!crtcs) |
| 1378 | return best_score; |
| 1379 | |
| 1380 | my_score = 1; |
| 1381 | if (connector->status == connector_status_connected) |
| 1382 | my_score++; |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1383 | if (drm_has_cmdline_mode(fb_helper_conn)) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1384 | my_score++; |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1385 | if (drm_has_preferred_mode(fb_helper_conn, width, height)) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1386 | my_score++; |
| 1387 | |
| 1388 | connector_funcs = connector->helper_private; |
| 1389 | encoder = connector_funcs->best_encoder(connector); |
| 1390 | if (!encoder) |
| 1391 | goto out; |
| 1392 | |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1393 | /* select a crtc for this connector and then attempt to configure |
| 1394 | remaining connectors */ |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1395 | for (c = 0; c < fb_helper->crtc_count; c++) { |
| 1396 | crtc = &fb_helper->crtc_info[c]; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1397 | |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 1398 | if ((encoder->possible_crtcs & (1 << c)) == 0) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1399 | continue; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1400 | |
| 1401 | for (o = 0; o < n; o++) |
| 1402 | if (best_crtcs[o] == crtc) |
| 1403 | break; |
| 1404 | |
| 1405 | if (o < n) { |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 1406 | /* ignore cloning unless only a single crtc */ |
| 1407 | if (fb_helper->crtc_count > 1) |
| 1408 | continue; |
| 1409 | |
| 1410 | if (!drm_mode_equal(modes[o], modes[n])) |
| 1411 | continue; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1412 | } |
| 1413 | |
| 1414 | crtcs[n] = crtc; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1415 | memcpy(crtcs, best_crtcs, n * sizeof(struct drm_fb_helper_crtc *)); |
| 1416 | score = my_score + drm_pick_crtcs(fb_helper, crtcs, modes, n + 1, |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1417 | width, height); |
| 1418 | if (score > best_score) { |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1419 | best_score = score; |
| 1420 | memcpy(best_crtcs, crtcs, |
| 1421 | dev->mode_config.num_connector * |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1422 | sizeof(struct drm_fb_helper_crtc *)); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1423 | } |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1424 | } |
| 1425 | out: |
| 1426 | kfree(crtcs); |
| 1427 | return best_score; |
| 1428 | } |
| 1429 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1430 | static void drm_setup_crtcs(struct drm_fb_helper *fb_helper) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1431 | { |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1432 | struct drm_device *dev = fb_helper->dev; |
| 1433 | struct drm_fb_helper_crtc **crtcs; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1434 | struct drm_display_mode **modes; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1435 | struct drm_mode_set *modeset; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1436 | bool *enabled; |
| 1437 | int width, height; |
Jesse Barnes | 11e17a0 | 2013-02-19 13:31:39 -0800 | [diff] [blame] | 1438 | int i; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1439 | |
| 1440 | DRM_DEBUG_KMS("\n"); |
| 1441 | |
| 1442 | width = dev->mode_config.max_width; |
| 1443 | height = dev->mode_config.max_height; |
| 1444 | |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1445 | crtcs = kcalloc(dev->mode_config.num_connector, |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1446 | sizeof(struct drm_fb_helper_crtc *), GFP_KERNEL); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1447 | modes = kcalloc(dev->mode_config.num_connector, |
| 1448 | sizeof(struct drm_display_mode *), GFP_KERNEL); |
| 1449 | enabled = kcalloc(dev->mode_config.num_connector, |
| 1450 | sizeof(bool), GFP_KERNEL); |
Sachin Kamat | 8c5eaca | 2012-11-19 09:44:58 +0000 | [diff] [blame] | 1451 | if (!crtcs || !modes || !enabled) { |
| 1452 | DRM_ERROR("Memory allocation failed\n"); |
| 1453 | goto out; |
| 1454 | } |
| 1455 | |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1456 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1457 | drm_enable_connectors(fb_helper, enabled); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1458 | |
Jesse Barnes | 11e17a0 | 2013-02-19 13:31:39 -0800 | [diff] [blame] | 1459 | if (!(fb_helper->funcs->initial_config && |
| 1460 | fb_helper->funcs->initial_config(fb_helper, crtcs, modes, |
| 1461 | enabled, width, height))) { |
| 1462 | memset(modes, 0, dev->mode_config.num_connector*sizeof(modes[0])); |
| 1463 | memset(crtcs, 0, dev->mode_config.num_connector*sizeof(crtcs[0])); |
| 1464 | |
| 1465 | if (!drm_target_cloned(fb_helper, |
| 1466 | modes, enabled, width, height) && |
| 1467 | !drm_target_preferred(fb_helper, |
| 1468 | modes, enabled, width, height)) |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 1469 | DRM_ERROR("Unable to find initial modes\n"); |
Jesse Barnes | 11e17a0 | 2013-02-19 13:31:39 -0800 | [diff] [blame] | 1470 | |
| 1471 | DRM_DEBUG_KMS("picking CRTCs for %dx%d config\n", |
| 1472 | width, height); |
| 1473 | |
| 1474 | drm_pick_crtcs(fb_helper, crtcs, modes, 0, width, height); |
Dave Airlie | 1d42bbc | 2010-05-07 05:02:30 +0000 | [diff] [blame] | 1475 | } |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1476 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1477 | /* need to set the modesets up here for use later */ |
| 1478 | /* fill out the connector<->crtc mappings into the modesets */ |
| 1479 | for (i = 0; i < fb_helper->crtc_count; i++) { |
| 1480 | modeset = &fb_helper->crtc_info[i].mode_set; |
| 1481 | modeset->num_connectors = 0; |
Daniel Vetter | 7e53f3a | 2013-01-21 10:52:17 +0100 | [diff] [blame] | 1482 | modeset->fb = NULL; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1483 | } |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1484 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1485 | for (i = 0; i < fb_helper->connector_count; i++) { |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1486 | struct drm_display_mode *mode = modes[i]; |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1487 | struct drm_fb_helper_crtc *fb_crtc = crtcs[i]; |
| 1488 | modeset = &fb_crtc->mode_set; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1489 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1490 | if (mode && fb_crtc) { |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1491 | DRM_DEBUG_KMS("desired mode %s set on crtc %d\n", |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1492 | mode->name, fb_crtc->mode_set.crtc->base.id); |
| 1493 | fb_crtc->desired_mode = mode; |
| 1494 | if (modeset->mode) |
| 1495 | drm_mode_destroy(dev, modeset->mode); |
| 1496 | modeset->mode = drm_mode_duplicate(dev, |
| 1497 | fb_crtc->desired_mode); |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1498 | modeset->connectors[modeset->num_connectors++] = fb_helper->connector_info[i]->connector; |
Daniel Vetter | 7e53f3a | 2013-01-21 10:52:17 +0100 | [diff] [blame] | 1499 | modeset->fb = fb_helper->fb; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1500 | } |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1501 | } |
| 1502 | |
Daniel Vetter | 7e53f3a | 2013-01-21 10:52:17 +0100 | [diff] [blame] | 1503 | /* Clear out any old modes if there are no more connected outputs. */ |
| 1504 | for (i = 0; i < fb_helper->crtc_count; i++) { |
| 1505 | modeset = &fb_helper->crtc_info[i].mode_set; |
| 1506 | if (modeset->num_connectors == 0) { |
| 1507 | BUG_ON(modeset->fb); |
| 1508 | BUG_ON(modeset->num_connectors); |
| 1509 | if (modeset->mode) |
| 1510 | drm_mode_destroy(dev, modeset->mode); |
| 1511 | modeset->mode = NULL; |
| 1512 | } |
| 1513 | } |
Sachin Kamat | 8c5eaca | 2012-11-19 09:44:58 +0000 | [diff] [blame] | 1514 | out: |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1515 | kfree(crtcs); |
| 1516 | kfree(modes); |
| 1517 | kfree(enabled); |
| 1518 | } |
| 1519 | |
| 1520 | /** |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 1521 | * drm_fb_helper_initial_config - setup a sane initial connector configuration |
Daniel Vetter | d0ddc033 | 2012-11-01 14:45:17 +0100 | [diff] [blame] | 1522 | * @fb_helper: fb_helper device struct |
| 1523 | * @bpp_sel: bpp value to use for the framebuffer configuration |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1524 | * |
Daniel Vetter | d0ddc033 | 2012-11-01 14:45:17 +0100 | [diff] [blame] | 1525 | * Scans the CRTCs and connectors and tries to put together an initial setup. |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1526 | * At the moment, this is a cloned configuration across all heads with |
| 1527 | * a new framebuffer object as the backing store. |
| 1528 | * |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 1529 | * Note that this also registers the fbdev and so allows userspace to call into |
| 1530 | * the driver through the fbdev interfaces. |
| 1531 | * |
| 1532 | * This function will call down into the ->fb_probe callback to let |
| 1533 | * the driver allocate and initialize the fbdev info structure and the drm |
| 1534 | * framebuffer used to back the fbdev. drm_fb_helper_fill_var() and |
| 1535 | * drm_fb_helper_fill_fix() are provided as helpers to setup simple default |
| 1536 | * values for the fbdev info structure. |
| 1537 | * |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1538 | * RETURNS: |
| 1539 | * Zero if everything went ok, nonzero otherwise. |
| 1540 | */ |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 1541 | bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1542 | { |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1543 | struct drm_device *dev = fb_helper->dev; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1544 | int count = 0; |
| 1545 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1546 | drm_fb_helper_parse_command_line(fb_helper); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1547 | |
Dave Airlie | 0b4c0f3 | 2010-03-30 05:34:15 +0000 | [diff] [blame] | 1548 | count = drm_fb_helper_probe_connector_modes(fb_helper, |
| 1549 | dev->mode_config.max_width, |
| 1550 | dev->mode_config.max_height); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1551 | /* |
| 1552 | * we shouldn't end up with no modes here. |
| 1553 | */ |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 1554 | if (count == 0) |
Sachin Kamat | d56b1b9 | 2012-11-15 03:43:29 +0000 | [diff] [blame] | 1555 | dev_info(fb_helper->dev->dev, "No connectors reported connected with modes\n"); |
Sachin Kamat | 96081cd | 2012-11-15 03:43:30 +0000 | [diff] [blame] | 1556 | |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1557 | drm_setup_crtcs(fb_helper); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1558 | |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 1559 | return drm_fb_helper_single_fb_probe(fb_helper, bpp_sel); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1560 | } |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1561 | EXPORT_SYMBOL(drm_fb_helper_initial_config); |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1562 | |
Chris Wilson | 7394371 | 2011-04-22 11:03:57 +0100 | [diff] [blame] | 1563 | /** |
| 1564 | * drm_fb_helper_hotplug_event - respond to a hotplug notification by |
Daniel Vetter | d0ddc033 | 2012-11-01 14:45:17 +0100 | [diff] [blame] | 1565 | * probing all the outputs attached to the fb |
Chris Wilson | 7394371 | 2011-04-22 11:03:57 +0100 | [diff] [blame] | 1566 | * @fb_helper: the drm_fb_helper |
| 1567 | * |
Chris Wilson | 7394371 | 2011-04-22 11:03:57 +0100 | [diff] [blame] | 1568 | * Scan the connectors attached to the fb_helper and try to put together a |
| 1569 | * setup after *notification of a change in output configuration. |
| 1570 | * |
Daniel Vetter | 207fd32 | 2013-01-20 22:13:14 +0100 | [diff] [blame] | 1571 | * Called at runtime, takes the mode config locks to be able to check/change the |
| 1572 | * modeset configuration. Must be run from process context (which usually means |
| 1573 | * either the output polling work or a work item launched from the driver's |
| 1574 | * hotplug interrupt). |
| 1575 | * |
| 1576 | * Note that the driver must ensure that this is only called _after_ the fb has |
| 1577 | * been fully set up, i.e. after the call to drm_fb_helper_initial_config. |
| 1578 | * |
Chris Wilson | 7394371 | 2011-04-22 11:03:57 +0100 | [diff] [blame] | 1579 | * RETURNS: |
| 1580 | * 0 on success and a non-zero error code otherwise. |
| 1581 | */ |
| 1582 | int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper) |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1583 | { |
Chris Wilson | 7394371 | 2011-04-22 11:03:57 +0100 | [diff] [blame] | 1584 | struct drm_device *dev = fb_helper->dev; |
Lespiau, Damien | 51bbd27 | 2013-09-28 16:24:05 +0100 | [diff] [blame] | 1585 | u32 max_width, max_height; |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 1586 | |
| 1587 | if (!fb_helper->fb) |
Chris Wilson | 7394371 | 2011-04-22 11:03:57 +0100 | [diff] [blame] | 1588 | return 0; |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1589 | |
Daniel Vetter | 89ced12 | 2013-04-11 14:26:55 +0000 | [diff] [blame] | 1590 | mutex_lock(&fb_helper->dev->mode_config.mutex); |
Daniel Vetter | 20c60c3 | 2012-12-17 12:13:23 +0100 | [diff] [blame] | 1591 | if (!drm_fb_helper_is_bound(fb_helper)) { |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1592 | fb_helper->delayed_hotplug = true; |
Daniel Vetter | 89ced12 | 2013-04-11 14:26:55 +0000 | [diff] [blame] | 1593 | mutex_unlock(&fb_helper->dev->mode_config.mutex); |
Chris Wilson | 7394371 | 2011-04-22 11:03:57 +0100 | [diff] [blame] | 1594 | return 0; |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1595 | } |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1596 | DRM_DEBUG_KMS("\n"); |
| 1597 | |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 1598 | max_width = fb_helper->fb->width; |
| 1599 | max_height = fb_helper->fb->height; |
Dave Airlie | 4abe352 | 2010-03-30 05:34:18 +0000 | [diff] [blame] | 1600 | |
Lespiau, Damien | 51bbd27 | 2013-09-28 16:24:05 +0100 | [diff] [blame] | 1601 | drm_fb_helper_probe_connector_modes(fb_helper, max_width, max_height); |
Daniel Vetter | 89ced12 | 2013-04-11 14:26:55 +0000 | [diff] [blame] | 1602 | mutex_unlock(&fb_helper->dev->mode_config.mutex); |
| 1603 | |
| 1604 | drm_modeset_lock_all(dev); |
Dave Airlie | 8be48d9 | 2010-03-30 05:34:14 +0000 | [diff] [blame] | 1605 | drm_setup_crtcs(fb_helper); |
Daniel Vetter | 8484990 | 2012-12-02 00:28:11 +0100 | [diff] [blame] | 1606 | drm_modeset_unlock_all(dev); |
Daniel Vetter | 2180c3c | 2013-01-21 23:12:36 +0100 | [diff] [blame] | 1607 | drm_fb_helper_set_par(fb_helper->fbdev); |
| 1608 | |
| 1609 | return 0; |
Dave Airlie | 3865167 | 2010-03-30 05:34:13 +0000 | [diff] [blame] | 1610 | } |
Dave Airlie | eb1f8e4 | 2010-05-07 06:42:51 +0000 | [diff] [blame] | 1611 | EXPORT_SYMBOL(drm_fb_helper_hotplug_event); |
Dave Airlie | 5c4426a | 2010-03-30 05:34:17 +0000 | [diff] [blame] | 1612 | |
David Rientjes | 6a108a1 | 2011-01-20 14:44:16 -0800 | [diff] [blame] | 1613 | /* The Kconfig DRM_KMS_HELPER selects FRAMEBUFFER_CONSOLE (if !EXPERT) |
David Fries | 3ce0516 | 2010-12-12 12:39:22 -0600 | [diff] [blame] | 1614 | * but the module doesn't depend on any fb console symbols. At least |
| 1615 | * attempt to load fbcon to avoid leaving the system without a usable console. |
| 1616 | */ |
David Rientjes | 6a108a1 | 2011-01-20 14:44:16 -0800 | [diff] [blame] | 1617 | #if defined(CONFIG_FRAMEBUFFER_CONSOLE_MODULE) && !defined(CONFIG_EXPERT) |
David Fries | 3ce0516 | 2010-12-12 12:39:22 -0600 | [diff] [blame] | 1618 | static int __init drm_fb_helper_modinit(void) |
| 1619 | { |
| 1620 | const char *name = "fbcon"; |
| 1621 | struct module *fbcon; |
| 1622 | |
| 1623 | mutex_lock(&module_mutex); |
| 1624 | fbcon = find_module(name); |
| 1625 | mutex_unlock(&module_mutex); |
| 1626 | |
| 1627 | if (!fbcon) |
| 1628 | request_module_nowait(name); |
| 1629 | return 0; |
| 1630 | } |
| 1631 | |
| 1632 | module_init(drm_fb_helper_modinit); |
| 1633 | #endif |