Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Freescale i.MX drm driver |
| 3 | * |
| 4 | * Copyright (C) 2011 Sascha Hauer, Pengutronix |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version 2 |
| 9 | * of the License, or (at your option) any later version. |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/device.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | #include <drm/drmP.h> |
| 20 | #include <drm/drm_fb_helper.h> |
| 21 | #include <drm/drm_crtc_helper.h> |
| 22 | #include <linux/fb.h> |
| 23 | #include <linux/module.h> |
| 24 | #include <drm/drm_gem_cma_helper.h> |
| 25 | #include <drm/drm_fb_cma_helper.h> |
| 26 | |
| 27 | #include "imx-drm.h" |
| 28 | |
| 29 | #define MAX_CRTC 4 |
| 30 | |
| 31 | struct crtc_cookie { |
| 32 | void *cookie; |
| 33 | int id; |
| 34 | struct list_head list; |
| 35 | }; |
| 36 | |
| 37 | struct imx_drm_device { |
| 38 | struct drm_device *drm; |
| 39 | struct device *dev; |
| 40 | struct list_head crtc_list; |
| 41 | struct list_head encoder_list; |
| 42 | struct list_head connector_list; |
| 43 | struct mutex mutex; |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 44 | int pipes; |
| 45 | struct drm_fbdev_cma *fbhelper; |
| 46 | }; |
| 47 | |
| 48 | struct imx_drm_crtc { |
| 49 | struct drm_crtc *crtc; |
| 50 | struct list_head list; |
| 51 | struct imx_drm_device *imxdrm; |
| 52 | int pipe; |
| 53 | struct imx_drm_crtc_helper_funcs imx_drm_helper_funcs; |
| 54 | struct module *owner; |
| 55 | struct crtc_cookie cookie; |
| 56 | }; |
| 57 | |
| 58 | struct imx_drm_encoder { |
| 59 | struct drm_encoder *encoder; |
| 60 | struct list_head list; |
| 61 | struct module *owner; |
| 62 | struct list_head possible_crtcs; |
| 63 | }; |
| 64 | |
| 65 | struct imx_drm_connector { |
| 66 | struct drm_connector *connector; |
| 67 | struct list_head list; |
| 68 | struct module *owner; |
| 69 | }; |
| 70 | |
Philipp Zabel | b8d181e | 2013-10-10 16:18:45 +0200 | [diff] [blame] | 71 | int imx_drm_crtc_id(struct imx_drm_crtc *crtc) |
| 72 | { |
| 73 | return crtc->pipe; |
| 74 | } |
Josh Boyer | 9c74360 | 2013-11-12 12:15:45 -0500 | [diff] [blame] | 75 | EXPORT_SYMBOL_GPL(imx_drm_crtc_id); |
Philipp Zabel | b8d181e | 2013-10-10 16:18:45 +0200 | [diff] [blame] | 76 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 77 | static void imx_drm_driver_lastclose(struct drm_device *drm) |
| 78 | { |
| 79 | struct imx_drm_device *imxdrm = drm->dev_private; |
| 80 | |
| 81 | if (imxdrm->fbhelper) |
| 82 | drm_fbdev_cma_restore_mode(imxdrm->fbhelper); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | static int imx_drm_driver_unload(struct drm_device *drm) |
| 86 | { |
| 87 | struct imx_drm_device *imxdrm = drm->dev_private; |
| 88 | |
Daniel Vetter | aaba4b5 | 2013-07-10 14:11:45 +0200 | [diff] [blame] | 89 | imx_drm_device_put(); |
| 90 | |
Russell King | 8007875 | 2013-12-16 11:33:44 +0000 | [diff] [blame] | 91 | drm_vblank_cleanup(imxdrm->drm); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 92 | drm_kms_helper_poll_fini(imxdrm->drm); |
Russell King | 8007875 | 2013-12-16 11:33:44 +0000 | [diff] [blame] | 93 | drm_mode_config_cleanup(imxdrm->drm); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 94 | |
| 95 | return 0; |
| 96 | } |
| 97 | |
| 98 | /* |
| 99 | * We don't care at all for crtc numbers, but the core expects the |
| 100 | * crtcs to be numbered |
| 101 | */ |
| 102 | static struct imx_drm_crtc *imx_drm_crtc_by_num(struct imx_drm_device *imxdrm, |
| 103 | int num) |
| 104 | { |
| 105 | struct imx_drm_crtc *imx_drm_crtc; |
| 106 | |
| 107 | list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) |
| 108 | if (imx_drm_crtc->pipe == num) |
| 109 | return imx_drm_crtc; |
| 110 | return NULL; |
| 111 | } |
| 112 | |
Philipp Zabel | 2ea4260 | 2013-04-08 18:04:35 +0200 | [diff] [blame] | 113 | int imx_drm_crtc_panel_format_pins(struct drm_crtc *crtc, u32 encoder_type, |
| 114 | u32 interface_pix_fmt, int hsync_pin, int vsync_pin) |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 115 | { |
| 116 | struct imx_drm_device *imxdrm = crtc->dev->dev_private; |
| 117 | struct imx_drm_crtc *imx_crtc; |
| 118 | struct imx_drm_crtc_helper_funcs *helper; |
| 119 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 120 | list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) |
| 121 | if (imx_crtc->crtc == crtc) |
| 122 | goto found; |
| 123 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 124 | return -EINVAL; |
| 125 | found: |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 126 | helper = &imx_crtc->imx_drm_helper_funcs; |
| 127 | if (helper->set_interface_pix_fmt) |
| 128 | return helper->set_interface_pix_fmt(crtc, |
Philipp Zabel | 2ea4260 | 2013-04-08 18:04:35 +0200 | [diff] [blame] | 129 | encoder_type, interface_pix_fmt, |
| 130 | hsync_pin, vsync_pin); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 131 | return 0; |
| 132 | } |
Philipp Zabel | 2ea4260 | 2013-04-08 18:04:35 +0200 | [diff] [blame] | 133 | EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format_pins); |
| 134 | |
| 135 | int imx_drm_crtc_panel_format(struct drm_crtc *crtc, u32 encoder_type, |
| 136 | u32 interface_pix_fmt) |
| 137 | { |
| 138 | return imx_drm_crtc_panel_format_pins(crtc, encoder_type, |
Markus Niebel | 079461b | 2013-05-27 10:19:09 +0200 | [diff] [blame] | 139 | interface_pix_fmt, 2, 3); |
Philipp Zabel | 2ea4260 | 2013-04-08 18:04:35 +0200 | [diff] [blame] | 140 | } |
Sascha Hauer | aecfbdb | 2012-09-21 10:07:49 +0200 | [diff] [blame] | 141 | EXPORT_SYMBOL_GPL(imx_drm_crtc_panel_format); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 142 | |
| 143 | int imx_drm_crtc_vblank_get(struct imx_drm_crtc *imx_drm_crtc) |
| 144 | { |
| 145 | return drm_vblank_get(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); |
| 146 | } |
| 147 | EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get); |
| 148 | |
| 149 | void imx_drm_crtc_vblank_put(struct imx_drm_crtc *imx_drm_crtc) |
| 150 | { |
| 151 | drm_vblank_put(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); |
| 152 | } |
| 153 | EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put); |
| 154 | |
| 155 | void imx_drm_handle_vblank(struct imx_drm_crtc *imx_drm_crtc) |
| 156 | { |
| 157 | drm_handle_vblank(imx_drm_crtc->imxdrm->drm, imx_drm_crtc->pipe); |
| 158 | } |
| 159 | EXPORT_SYMBOL_GPL(imx_drm_handle_vblank); |
| 160 | |
| 161 | static int imx_drm_enable_vblank(struct drm_device *drm, int crtc) |
| 162 | { |
| 163 | struct imx_drm_device *imxdrm = drm->dev_private; |
| 164 | struct imx_drm_crtc *imx_drm_crtc; |
| 165 | int ret; |
| 166 | |
| 167 | imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc); |
| 168 | if (!imx_drm_crtc) |
| 169 | return -EINVAL; |
| 170 | |
| 171 | if (!imx_drm_crtc->imx_drm_helper_funcs.enable_vblank) |
| 172 | return -ENOSYS; |
| 173 | |
| 174 | ret = imx_drm_crtc->imx_drm_helper_funcs.enable_vblank( |
| 175 | imx_drm_crtc->crtc); |
| 176 | |
| 177 | return ret; |
| 178 | } |
| 179 | |
| 180 | static void imx_drm_disable_vblank(struct drm_device *drm, int crtc) |
| 181 | { |
| 182 | struct imx_drm_device *imxdrm = drm->dev_private; |
| 183 | struct imx_drm_crtc *imx_drm_crtc; |
| 184 | |
| 185 | imx_drm_crtc = imx_drm_crtc_by_num(imxdrm, crtc); |
| 186 | if (!imx_drm_crtc) |
| 187 | return; |
| 188 | |
| 189 | if (!imx_drm_crtc->imx_drm_helper_funcs.disable_vblank) |
| 190 | return; |
| 191 | |
| 192 | imx_drm_crtc->imx_drm_helper_funcs.disable_vblank(imx_drm_crtc->crtc); |
| 193 | } |
| 194 | |
Sascha Hauer | 6ee4d7f | 2013-10-10 16:18:44 +0200 | [diff] [blame] | 195 | static void imx_drm_driver_preclose(struct drm_device *drm, |
| 196 | struct drm_file *file) |
| 197 | { |
| 198 | int i; |
| 199 | |
| 200 | if (!file->is_master) |
| 201 | return; |
| 202 | |
Russell King | 942325c | 2013-12-16 12:38:50 +0000 | [diff] [blame] | 203 | for (i = 0; i < MAX_CRTC; i++) |
| 204 | imx_drm_disable_vblank(drm, i); |
Sascha Hauer | 6ee4d7f | 2013-10-10 16:18:44 +0200 | [diff] [blame] | 205 | } |
| 206 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 207 | static const struct file_operations imx_drm_driver_fops = { |
| 208 | .owner = THIS_MODULE, |
| 209 | .open = drm_open, |
| 210 | .release = drm_release, |
| 211 | .unlocked_ioctl = drm_ioctl, |
| 212 | .mmap = drm_gem_cma_mmap, |
| 213 | .poll = drm_poll, |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 214 | .read = drm_read, |
| 215 | .llseek = noop_llseek, |
| 216 | }; |
| 217 | |
| 218 | static struct imx_drm_device *imx_drm_device; |
| 219 | |
| 220 | static struct imx_drm_device *__imx_drm_device(void) |
| 221 | { |
| 222 | return imx_drm_device; |
| 223 | } |
| 224 | |
| 225 | struct drm_device *imx_drm_device_get(void) |
| 226 | { |
| 227 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 228 | struct imx_drm_encoder *enc; |
| 229 | struct imx_drm_connector *con; |
| 230 | struct imx_drm_crtc *crtc; |
| 231 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 232 | list_for_each_entry(enc, &imxdrm->encoder_list, list) { |
| 233 | if (!try_module_get(enc->owner)) { |
| 234 | dev_err(imxdrm->dev, "could not get module %s\n", |
| 235 | module_name(enc->owner)); |
| 236 | goto unwind_enc; |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | list_for_each_entry(con, &imxdrm->connector_list, list) { |
| 241 | if (!try_module_get(con->owner)) { |
| 242 | dev_err(imxdrm->dev, "could not get module %s\n", |
| 243 | module_name(con->owner)); |
| 244 | goto unwind_con; |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | list_for_each_entry(crtc, &imxdrm->crtc_list, list) { |
| 249 | if (!try_module_get(crtc->owner)) { |
| 250 | dev_err(imxdrm->dev, "could not get module %s\n", |
| 251 | module_name(crtc->owner)); |
| 252 | goto unwind_crtc; |
| 253 | } |
| 254 | } |
| 255 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 256 | return imxdrm->drm; |
| 257 | |
| 258 | unwind_crtc: |
| 259 | list_for_each_entry_continue_reverse(crtc, &imxdrm->crtc_list, list) |
| 260 | module_put(crtc->owner); |
| 261 | unwind_con: |
| 262 | list_for_each_entry_continue_reverse(con, &imxdrm->connector_list, list) |
| 263 | module_put(con->owner); |
| 264 | unwind_enc: |
| 265 | list_for_each_entry_continue_reverse(enc, &imxdrm->encoder_list, list) |
| 266 | module_put(enc->owner); |
| 267 | |
| 268 | mutex_unlock(&imxdrm->mutex); |
| 269 | |
| 270 | return NULL; |
| 271 | |
| 272 | } |
| 273 | EXPORT_SYMBOL_GPL(imx_drm_device_get); |
| 274 | |
| 275 | void imx_drm_device_put(void) |
| 276 | { |
| 277 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 278 | struct imx_drm_encoder *enc; |
| 279 | struct imx_drm_connector *con; |
| 280 | struct imx_drm_crtc *crtc; |
| 281 | |
| 282 | mutex_lock(&imxdrm->mutex); |
| 283 | |
| 284 | list_for_each_entry(crtc, &imxdrm->crtc_list, list) |
| 285 | module_put(crtc->owner); |
| 286 | |
| 287 | list_for_each_entry(con, &imxdrm->connector_list, list) |
| 288 | module_put(con->owner); |
| 289 | |
| 290 | list_for_each_entry(enc, &imxdrm->encoder_list, list) |
| 291 | module_put(enc->owner); |
| 292 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 293 | mutex_unlock(&imxdrm->mutex); |
| 294 | } |
| 295 | EXPORT_SYMBOL_GPL(imx_drm_device_put); |
| 296 | |
| 297 | static int drm_mode_group_reinit(struct drm_device *dev) |
| 298 | { |
| 299 | struct drm_mode_group *group = &dev->primary->mode_group; |
| 300 | uint32_t *id_list = group->id_list; |
| 301 | int ret; |
| 302 | |
| 303 | ret = drm_mode_group_init_legacy_group(dev, group); |
| 304 | if (ret < 0) |
| 305 | return ret; |
| 306 | |
| 307 | kfree(id_list); |
| 308 | return 0; |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * register an encoder to the drm core |
| 313 | */ |
| 314 | static int imx_drm_encoder_register(struct imx_drm_encoder *imx_drm_encoder) |
| 315 | { |
| 316 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 317 | |
| 318 | INIT_LIST_HEAD(&imx_drm_encoder->possible_crtcs); |
| 319 | |
| 320 | drm_encoder_init(imxdrm->drm, imx_drm_encoder->encoder, |
| 321 | imx_drm_encoder->encoder->funcs, |
| 322 | imx_drm_encoder->encoder->encoder_type); |
| 323 | |
| 324 | drm_mode_group_reinit(imxdrm->drm); |
| 325 | |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * unregister an encoder from the drm core |
| 331 | */ |
| 332 | static void imx_drm_encoder_unregister(struct imx_drm_encoder |
| 333 | *imx_drm_encoder) |
| 334 | { |
| 335 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 336 | |
| 337 | drm_encoder_cleanup(imx_drm_encoder->encoder); |
| 338 | |
| 339 | drm_mode_group_reinit(imxdrm->drm); |
| 340 | } |
| 341 | |
| 342 | /* |
| 343 | * register a connector to the drm core |
| 344 | */ |
| 345 | static int imx_drm_connector_register( |
| 346 | struct imx_drm_connector *imx_drm_connector) |
| 347 | { |
| 348 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 349 | |
| 350 | drm_connector_init(imxdrm->drm, imx_drm_connector->connector, |
| 351 | imx_drm_connector->connector->funcs, |
| 352 | imx_drm_connector->connector->connector_type); |
| 353 | drm_mode_group_reinit(imxdrm->drm); |
| 354 | |
| 355 | return drm_sysfs_connector_add(imx_drm_connector->connector); |
| 356 | } |
| 357 | |
| 358 | /* |
| 359 | * unregister a connector from the drm core |
| 360 | */ |
| 361 | static void imx_drm_connector_unregister( |
| 362 | struct imx_drm_connector *imx_drm_connector) |
| 363 | { |
| 364 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 365 | |
| 366 | drm_sysfs_connector_remove(imx_drm_connector->connector); |
| 367 | drm_connector_cleanup(imx_drm_connector->connector); |
| 368 | |
| 369 | drm_mode_group_reinit(imxdrm->drm); |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * register a crtc to the drm core |
| 374 | */ |
| 375 | static int imx_drm_crtc_register(struct imx_drm_crtc *imx_drm_crtc) |
| 376 | { |
| 377 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 378 | int ret; |
| 379 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 380 | ret = drm_mode_crtc_set_gamma_size(imx_drm_crtc->crtc, 256); |
| 381 | if (ret) |
| 382 | return ret; |
| 383 | |
| 384 | drm_crtc_helper_add(imx_drm_crtc->crtc, |
| 385 | imx_drm_crtc->imx_drm_helper_funcs.crtc_helper_funcs); |
| 386 | |
Russell King | 9fe73d4 | 2013-12-16 12:39:11 +0000 | [diff] [blame] | 387 | drm_crtc_init(imxdrm->drm, imx_drm_crtc->crtc, |
| 388 | imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs); |
| 389 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 390 | drm_mode_group_reinit(imxdrm->drm); |
| 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | /* |
| 396 | * Called by the CRTC driver when all CRTCs are registered. This |
| 397 | * puts all the pieces together and initializes the driver. |
| 398 | * Once this is called no more CRTCs can be registered since |
| 399 | * the drm core has hardcoded the number of crtcs in several |
| 400 | * places. |
| 401 | */ |
| 402 | static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags) |
| 403 | { |
| 404 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 405 | int ret; |
| 406 | |
| 407 | imxdrm->drm = drm; |
| 408 | |
| 409 | drm->dev_private = imxdrm; |
| 410 | |
| 411 | /* |
| 412 | * enable drm irq mode. |
Ville Syrjälä | 4423843 | 2013-10-04 14:53:37 +0300 | [diff] [blame] | 413 | * - with irq_enabled = true, we can use the vblank feature. |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 414 | * |
| 415 | * P.S. note that we wouldn't use drm irq handler but |
| 416 | * just specific driver own one instead because |
| 417 | * drm framework supports only one irq handler and |
| 418 | * drivers can well take care of their interrupts |
| 419 | */ |
Ville Syrjälä | 4423843 | 2013-10-04 14:53:37 +0300 | [diff] [blame] | 420 | drm->irq_enabled = true; |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 421 | |
| 422 | drm_mode_config_init(drm); |
| 423 | imx_drm_mode_config_init(drm); |
| 424 | |
| 425 | mutex_lock(&imxdrm->mutex); |
| 426 | |
| 427 | drm_kms_helper_poll_init(imxdrm->drm); |
| 428 | |
| 429 | /* setup the grouping for the legacy output */ |
| 430 | ret = drm_mode_group_init_legacy_group(imxdrm->drm, |
| 431 | &imxdrm->drm->primary->mode_group); |
| 432 | if (ret) |
Russell King | 8007875 | 2013-12-16 11:33:44 +0000 | [diff] [blame] | 433 | goto err_kms; |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 434 | |
| 435 | ret = drm_vblank_init(imxdrm->drm, MAX_CRTC); |
| 436 | if (ret) |
Russell King | 8007875 | 2013-12-16 11:33:44 +0000 | [diff] [blame] | 437 | goto err_kms; |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 438 | |
| 439 | /* |
Ville Syrjälä | ba0bf12 | 2013-10-04 14:53:33 +0300 | [diff] [blame] | 440 | * with vblank_disable_allowed = true, vblank interrupt will be disabled |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 441 | * by drm timer once a current process gives up ownership of |
| 442 | * vblank event.(after drm_vblank_put function is called) |
| 443 | */ |
Ville Syrjälä | ba0bf12 | 2013-10-04 14:53:33 +0300 | [diff] [blame] | 444 | imxdrm->drm->vblank_disable_allowed = true; |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 445 | |
Russell King | 8007875 | 2013-12-16 11:33:44 +0000 | [diff] [blame] | 446 | if (!imx_drm_device_get()) { |
Daniel Vetter | aaba4b5 | 2013-07-10 14:11:45 +0200 | [diff] [blame] | 447 | ret = -EINVAL; |
Russell King | 8007875 | 2013-12-16 11:33:44 +0000 | [diff] [blame] | 448 | goto err_vblank; |
| 449 | } |
Daniel Vetter | aaba4b5 | 2013-07-10 14:11:45 +0200 | [diff] [blame] | 450 | |
Daniel Vetter | a72f8be | 2013-11-03 14:31:09 +0100 | [diff] [blame] | 451 | platform_set_drvdata(drm->platformdev, drm); |
Russell King | 8007875 | 2013-12-16 11:33:44 +0000 | [diff] [blame] | 452 | mutex_unlock(&imxdrm->mutex); |
| 453 | return 0; |
Daniel Vetter | a72f8be | 2013-11-03 14:31:09 +0100 | [diff] [blame] | 454 | |
Russell King | 8007875 | 2013-12-16 11:33:44 +0000 | [diff] [blame] | 455 | err_vblank: |
| 456 | drm_vblank_cleanup(drm); |
| 457 | err_kms: |
| 458 | drm_kms_helper_poll_fini(drm); |
| 459 | drm_mode_config_cleanup(drm); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 460 | mutex_unlock(&imxdrm->mutex); |
| 461 | |
| 462 | return ret; |
| 463 | } |
| 464 | |
| 465 | static void imx_drm_update_possible_crtcs(void) |
| 466 | { |
| 467 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 468 | struct imx_drm_crtc *imx_drm_crtc; |
| 469 | struct imx_drm_encoder *enc; |
| 470 | struct crtc_cookie *cookie; |
| 471 | |
| 472 | list_for_each_entry(enc, &imxdrm->encoder_list, list) { |
| 473 | u32 possible_crtcs = 0; |
| 474 | |
| 475 | list_for_each_entry(cookie, &enc->possible_crtcs, list) { |
| 476 | list_for_each_entry(imx_drm_crtc, &imxdrm->crtc_list, list) { |
| 477 | if (imx_drm_crtc->cookie.cookie == cookie->cookie && |
| 478 | imx_drm_crtc->cookie.id == cookie->id) { |
| 479 | possible_crtcs |= 1 << imx_drm_crtc->pipe; |
| 480 | } |
| 481 | } |
| 482 | } |
| 483 | enc->encoder->possible_crtcs = possible_crtcs; |
| 484 | enc->encoder->possible_clones = possible_crtcs; |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | /* |
| 489 | * imx_drm_add_crtc - add a new crtc |
| 490 | * |
| 491 | * The return value if !NULL is a cookie for the caller to pass to |
| 492 | * imx_drm_remove_crtc later. |
| 493 | */ |
| 494 | int imx_drm_add_crtc(struct drm_crtc *crtc, |
| 495 | struct imx_drm_crtc **new_crtc, |
| 496 | const struct imx_drm_crtc_helper_funcs *imx_drm_helper_funcs, |
| 497 | struct module *owner, void *cookie, int id) |
| 498 | { |
| 499 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 500 | struct imx_drm_crtc *imx_drm_crtc; |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 501 | int ret; |
| 502 | |
| 503 | mutex_lock(&imxdrm->mutex); |
| 504 | |
Russell King | fd6040e | 2013-12-16 12:39:31 +0000 | [diff] [blame] | 505 | /* |
| 506 | * The vblank arrays are dimensioned by MAX_CRTC - we can't |
| 507 | * pass IDs greater than this to those functions. |
| 508 | */ |
| 509 | if (imxdrm->pipes >= MAX_CRTC) { |
| 510 | ret = -EINVAL; |
| 511 | goto err_busy; |
| 512 | } |
| 513 | |
Fabio Estevam | 099326d | 2013-09-17 14:53:23 -0300 | [diff] [blame] | 514 | if (imxdrm->drm->open_count) { |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 515 | ret = -EBUSY; |
| 516 | goto err_busy; |
| 517 | } |
| 518 | |
| 519 | imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL); |
| 520 | if (!imx_drm_crtc) { |
| 521 | ret = -ENOMEM; |
| 522 | goto err_alloc; |
| 523 | } |
| 524 | |
| 525 | imx_drm_crtc->imx_drm_helper_funcs = *imx_drm_helper_funcs; |
| 526 | imx_drm_crtc->pipe = imxdrm->pipes++; |
| 527 | imx_drm_crtc->cookie.cookie = cookie; |
| 528 | imx_drm_crtc->cookie.id = id; |
| 529 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 530 | imx_drm_crtc->crtc = crtc; |
| 531 | imx_drm_crtc->imxdrm = imxdrm; |
| 532 | |
| 533 | imx_drm_crtc->owner = owner; |
| 534 | |
| 535 | list_add_tail(&imx_drm_crtc->list, &imxdrm->crtc_list); |
| 536 | |
| 537 | *new_crtc = imx_drm_crtc; |
| 538 | |
| 539 | ret = imx_drm_crtc_register(imx_drm_crtc); |
| 540 | if (ret) |
| 541 | goto err_register; |
| 542 | |
| 543 | imx_drm_update_possible_crtcs(); |
| 544 | |
| 545 | mutex_unlock(&imxdrm->mutex); |
| 546 | |
| 547 | return 0; |
| 548 | |
| 549 | err_register: |
Russell King | 8283204 | 2013-12-16 11:33:24 +0000 | [diff] [blame] | 550 | list_del(&imx_drm_crtc->list); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 551 | kfree(imx_drm_crtc); |
| 552 | err_alloc: |
| 553 | err_busy: |
| 554 | mutex_unlock(&imxdrm->mutex); |
| 555 | return ret; |
| 556 | } |
| 557 | EXPORT_SYMBOL_GPL(imx_drm_add_crtc); |
| 558 | |
| 559 | /* |
| 560 | * imx_drm_remove_crtc - remove a crtc |
| 561 | */ |
| 562 | int imx_drm_remove_crtc(struct imx_drm_crtc *imx_drm_crtc) |
| 563 | { |
| 564 | struct imx_drm_device *imxdrm = imx_drm_crtc->imxdrm; |
| 565 | |
| 566 | mutex_lock(&imxdrm->mutex); |
| 567 | |
| 568 | drm_crtc_cleanup(imx_drm_crtc->crtc); |
| 569 | |
| 570 | list_del(&imx_drm_crtc->list); |
| 571 | |
| 572 | drm_mode_group_reinit(imxdrm->drm); |
| 573 | |
| 574 | mutex_unlock(&imxdrm->mutex); |
| 575 | |
| 576 | kfree(imx_drm_crtc); |
| 577 | |
| 578 | return 0; |
| 579 | } |
| 580 | EXPORT_SYMBOL_GPL(imx_drm_remove_crtc); |
| 581 | |
| 582 | /* |
| 583 | * imx_drm_add_encoder - add a new encoder |
| 584 | */ |
| 585 | int imx_drm_add_encoder(struct drm_encoder *encoder, |
| 586 | struct imx_drm_encoder **newenc, struct module *owner) |
| 587 | { |
| 588 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 589 | struct imx_drm_encoder *imx_drm_encoder; |
| 590 | int ret; |
| 591 | |
| 592 | mutex_lock(&imxdrm->mutex); |
| 593 | |
Fabio Estevam | 099326d | 2013-09-17 14:53:23 -0300 | [diff] [blame] | 594 | if (imxdrm->drm->open_count) { |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 595 | ret = -EBUSY; |
| 596 | goto err_busy; |
| 597 | } |
| 598 | |
| 599 | imx_drm_encoder = kzalloc(sizeof(*imx_drm_encoder), GFP_KERNEL); |
| 600 | if (!imx_drm_encoder) { |
| 601 | ret = -ENOMEM; |
| 602 | goto err_alloc; |
| 603 | } |
| 604 | |
| 605 | imx_drm_encoder->encoder = encoder; |
| 606 | imx_drm_encoder->owner = owner; |
| 607 | |
| 608 | ret = imx_drm_encoder_register(imx_drm_encoder); |
| 609 | if (ret) { |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 610 | ret = -ENOMEM; |
| 611 | goto err_register; |
| 612 | } |
| 613 | |
| 614 | list_add_tail(&imx_drm_encoder->list, &imxdrm->encoder_list); |
| 615 | |
| 616 | *newenc = imx_drm_encoder; |
| 617 | |
| 618 | mutex_unlock(&imxdrm->mutex); |
| 619 | |
| 620 | return 0; |
| 621 | |
| 622 | err_register: |
| 623 | kfree(imx_drm_encoder); |
| 624 | err_alloc: |
| 625 | err_busy: |
| 626 | mutex_unlock(&imxdrm->mutex); |
| 627 | |
| 628 | return ret; |
| 629 | } |
| 630 | EXPORT_SYMBOL_GPL(imx_drm_add_encoder); |
| 631 | |
| 632 | int imx_drm_encoder_add_possible_crtcs( |
| 633 | struct imx_drm_encoder *imx_drm_encoder, |
| 634 | struct device_node *np) |
| 635 | { |
| 636 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 637 | struct of_phandle_args args; |
| 638 | struct crtc_cookie *c; |
| 639 | int ret = 0; |
| 640 | int i; |
| 641 | |
| 642 | if (!list_empty(&imx_drm_encoder->possible_crtcs)) |
| 643 | return -EBUSY; |
| 644 | |
| 645 | for (i = 0; !ret; i++) { |
| 646 | ret = of_parse_phandle_with_args(np, "crtcs", |
| 647 | "#crtc-cells", i, &args); |
| 648 | if (ret < 0) |
| 649 | break; |
| 650 | |
| 651 | c = kzalloc(sizeof(*c), GFP_KERNEL); |
| 652 | if (!c) { |
| 653 | of_node_put(args.np); |
| 654 | return -ENOMEM; |
| 655 | } |
| 656 | |
| 657 | c->cookie = args.np; |
| 658 | c->id = args.args_count > 0 ? args.args[0] : 0; |
| 659 | |
| 660 | of_node_put(args.np); |
| 661 | |
| 662 | mutex_lock(&imxdrm->mutex); |
| 663 | |
| 664 | list_add_tail(&c->list, &imx_drm_encoder->possible_crtcs); |
| 665 | |
| 666 | mutex_unlock(&imxdrm->mutex); |
| 667 | } |
| 668 | |
| 669 | imx_drm_update_possible_crtcs(); |
| 670 | |
| 671 | return 0; |
| 672 | } |
Sascha Hauer | aecfbdb | 2012-09-21 10:07:49 +0200 | [diff] [blame] | 673 | EXPORT_SYMBOL_GPL(imx_drm_encoder_add_possible_crtcs); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 674 | |
| 675 | int imx_drm_encoder_get_mux_id(struct imx_drm_encoder *imx_drm_encoder, |
| 676 | struct drm_crtc *crtc) |
| 677 | { |
| 678 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 679 | struct imx_drm_crtc *imx_crtc; |
| 680 | int i = 0; |
| 681 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 682 | list_for_each_entry(imx_crtc, &imxdrm->crtc_list, list) { |
| 683 | if (imx_crtc->crtc == crtc) |
| 684 | goto found; |
| 685 | i++; |
| 686 | } |
| 687 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 688 | return -EINVAL; |
| 689 | found: |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 690 | return i; |
| 691 | } |
Fabio Estevam | ea8d158 | 2013-06-28 13:55:27 -0300 | [diff] [blame] | 692 | EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 693 | |
| 694 | /* |
| 695 | * imx_drm_remove_encoder - remove an encoder |
| 696 | */ |
| 697 | int imx_drm_remove_encoder(struct imx_drm_encoder *imx_drm_encoder) |
| 698 | { |
| 699 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 700 | struct crtc_cookie *c, *tmp; |
| 701 | |
| 702 | mutex_lock(&imxdrm->mutex); |
| 703 | |
| 704 | imx_drm_encoder_unregister(imx_drm_encoder); |
| 705 | |
| 706 | list_del(&imx_drm_encoder->list); |
| 707 | |
| 708 | list_for_each_entry_safe(c, tmp, &imx_drm_encoder->possible_crtcs, |
| 709 | list) |
| 710 | kfree(c); |
| 711 | |
| 712 | mutex_unlock(&imxdrm->mutex); |
| 713 | |
| 714 | kfree(imx_drm_encoder); |
| 715 | |
| 716 | return 0; |
| 717 | } |
| 718 | EXPORT_SYMBOL_GPL(imx_drm_remove_encoder); |
| 719 | |
| 720 | /* |
| 721 | * imx_drm_add_connector - add a connector |
| 722 | */ |
| 723 | int imx_drm_add_connector(struct drm_connector *connector, |
| 724 | struct imx_drm_connector **new_con, |
| 725 | struct module *owner) |
| 726 | { |
| 727 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 728 | struct imx_drm_connector *imx_drm_connector; |
| 729 | int ret; |
| 730 | |
| 731 | mutex_lock(&imxdrm->mutex); |
| 732 | |
Fabio Estevam | 099326d | 2013-09-17 14:53:23 -0300 | [diff] [blame] | 733 | if (imxdrm->drm->open_count) { |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 734 | ret = -EBUSY; |
| 735 | goto err_busy; |
| 736 | } |
| 737 | |
| 738 | imx_drm_connector = kzalloc(sizeof(*imx_drm_connector), GFP_KERNEL); |
| 739 | if (!imx_drm_connector) { |
| 740 | ret = -ENOMEM; |
| 741 | goto err_alloc; |
| 742 | } |
| 743 | |
| 744 | imx_drm_connector->connector = connector; |
| 745 | imx_drm_connector->owner = owner; |
| 746 | |
| 747 | ret = imx_drm_connector_register(imx_drm_connector); |
| 748 | if (ret) |
| 749 | goto err_register; |
| 750 | |
| 751 | list_add_tail(&imx_drm_connector->list, &imxdrm->connector_list); |
| 752 | |
| 753 | *new_con = imx_drm_connector; |
| 754 | |
| 755 | mutex_unlock(&imxdrm->mutex); |
| 756 | |
| 757 | return 0; |
| 758 | |
| 759 | err_register: |
| 760 | kfree(imx_drm_connector); |
| 761 | err_alloc: |
| 762 | err_busy: |
| 763 | mutex_unlock(&imxdrm->mutex); |
| 764 | |
| 765 | return ret; |
| 766 | } |
| 767 | EXPORT_SYMBOL_GPL(imx_drm_add_connector); |
| 768 | |
| 769 | void imx_drm_fb_helper_set(struct drm_fbdev_cma *fbdev_helper) |
| 770 | { |
| 771 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 772 | |
| 773 | imxdrm->fbhelper = fbdev_helper; |
| 774 | } |
| 775 | EXPORT_SYMBOL_GPL(imx_drm_fb_helper_set); |
| 776 | |
| 777 | /* |
| 778 | * imx_drm_remove_connector - remove a connector |
| 779 | */ |
| 780 | int imx_drm_remove_connector(struct imx_drm_connector *imx_drm_connector) |
| 781 | { |
| 782 | struct imx_drm_device *imxdrm = __imx_drm_device(); |
| 783 | |
| 784 | mutex_lock(&imxdrm->mutex); |
| 785 | |
| 786 | imx_drm_connector_unregister(imx_drm_connector); |
| 787 | |
| 788 | list_del(&imx_drm_connector->list); |
| 789 | |
| 790 | mutex_unlock(&imxdrm->mutex); |
| 791 | |
| 792 | kfree(imx_drm_connector); |
| 793 | |
| 794 | return 0; |
| 795 | } |
| 796 | EXPORT_SYMBOL_GPL(imx_drm_remove_connector); |
| 797 | |
Rob Clark | baa7094 | 2013-08-02 13:27:49 -0400 | [diff] [blame] | 798 | static const struct drm_ioctl_desc imx_drm_ioctls[] = { |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 799 | /* none so far */ |
| 800 | }; |
| 801 | |
| 802 | static struct drm_driver imx_drm_driver = { |
Philipp Zabel | bd3665c | 2013-10-10 16:18:46 +0200 | [diff] [blame] | 803 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 804 | .load = imx_drm_driver_load, |
| 805 | .unload = imx_drm_driver_unload, |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 806 | .lastclose = imx_drm_driver_lastclose, |
Sascha Hauer | 6ee4d7f | 2013-10-10 16:18:44 +0200 | [diff] [blame] | 807 | .preclose = imx_drm_driver_preclose, |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 808 | .gem_free_object = drm_gem_cma_free_object, |
| 809 | .gem_vm_ops = &drm_gem_cma_vm_ops, |
| 810 | .dumb_create = drm_gem_cma_dumb_create, |
| 811 | .dumb_map_offset = drm_gem_cma_dumb_map_offset, |
Daniel Vetter | 43387b3 | 2013-07-16 09:12:04 +0200 | [diff] [blame] | 812 | .dumb_destroy = drm_gem_dumb_destroy, |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 813 | |
Philipp Zabel | bd3665c | 2013-10-10 16:18:46 +0200 | [diff] [blame] | 814 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
| 815 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, |
| 816 | .gem_prime_import = drm_gem_prime_import, |
| 817 | .gem_prime_export = drm_gem_prime_export, |
| 818 | .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, |
| 819 | .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, |
| 820 | .gem_prime_vmap = drm_gem_cma_prime_vmap, |
| 821 | .gem_prime_vunmap = drm_gem_cma_prime_vunmap, |
| 822 | .gem_prime_mmap = drm_gem_cma_prime_mmap, |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 823 | .get_vblank_counter = drm_vblank_count, |
| 824 | .enable_vblank = imx_drm_enable_vblank, |
| 825 | .disable_vblank = imx_drm_disable_vblank, |
| 826 | .ioctls = imx_drm_ioctls, |
| 827 | .num_ioctls = ARRAY_SIZE(imx_drm_ioctls), |
| 828 | .fops = &imx_drm_driver_fops, |
| 829 | .name = "imx-drm", |
| 830 | .desc = "i.MX DRM graphics", |
| 831 | .date = "20120507", |
| 832 | .major = 1, |
| 833 | .minor = 0, |
| 834 | .patchlevel = 0, |
| 835 | }; |
| 836 | |
| 837 | static int imx_drm_platform_probe(struct platform_device *pdev) |
| 838 | { |
Russell King | 4cdbb4f | 2013-06-10 16:56:16 +0100 | [diff] [blame] | 839 | int ret; |
| 840 | |
| 841 | ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); |
| 842 | if (ret) |
| 843 | return ret; |
| 844 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 845 | imx_drm_device->dev = &pdev->dev; |
| 846 | |
| 847 | return drm_platform_init(&imx_drm_driver, pdev); |
| 848 | } |
| 849 | |
| 850 | static int imx_drm_platform_remove(struct platform_device *pdev) |
| 851 | { |
Daniel Vetter | a72f8be | 2013-11-03 14:31:09 +0100 | [diff] [blame] | 852 | drm_put_dev(platform_get_drvdata(pdev)); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 853 | |
| 854 | return 0; |
| 855 | } |
| 856 | |
| 857 | static struct platform_driver imx_drm_pdrv = { |
| 858 | .probe = imx_drm_platform_probe, |
Bill Pemberton | 99c28f1 | 2012-11-19 13:20:51 -0500 | [diff] [blame] | 859 | .remove = imx_drm_platform_remove, |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 860 | .driver = { |
| 861 | .owner = THIS_MODULE, |
| 862 | .name = "imx-drm", |
| 863 | }, |
| 864 | }; |
| 865 | |
| 866 | static struct platform_device *imx_drm_pdev; |
| 867 | |
| 868 | static int __init imx_drm_init(void) |
| 869 | { |
| 870 | int ret; |
| 871 | |
| 872 | imx_drm_device = kzalloc(sizeof(*imx_drm_device), GFP_KERNEL); |
| 873 | if (!imx_drm_device) |
| 874 | return -ENOMEM; |
| 875 | |
| 876 | mutex_init(&imx_drm_device->mutex); |
| 877 | INIT_LIST_HEAD(&imx_drm_device->crtc_list); |
| 878 | INIT_LIST_HEAD(&imx_drm_device->connector_list); |
| 879 | INIT_LIST_HEAD(&imx_drm_device->encoder_list); |
| 880 | |
| 881 | imx_drm_pdev = platform_device_register_simple("imx-drm", -1, NULL, 0); |
Wei Yongjun | 2eaaccd | 2013-10-25 17:07:18 +0800 | [diff] [blame] | 882 | if (IS_ERR(imx_drm_pdev)) { |
| 883 | ret = PTR_ERR(imx_drm_pdev); |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 884 | goto err_pdev; |
| 885 | } |
| 886 | |
Sascha Hauer | e692da4 | 2012-09-21 10:07:47 +0200 | [diff] [blame] | 887 | ret = platform_driver_register(&imx_drm_pdrv); |
| 888 | if (ret) |
| 889 | goto err_pdrv; |
| 890 | |
| 891 | return 0; |
| 892 | |
| 893 | err_pdrv: |
| 894 | platform_device_unregister(imx_drm_pdev); |
| 895 | err_pdev: |
| 896 | kfree(imx_drm_device); |
| 897 | |
| 898 | return ret; |
| 899 | } |
| 900 | |
| 901 | static void __exit imx_drm_exit(void) |
| 902 | { |
| 903 | platform_device_unregister(imx_drm_pdev); |
| 904 | platform_driver_unregister(&imx_drm_pdrv); |
| 905 | |
| 906 | kfree(imx_drm_device); |
| 907 | } |
| 908 | |
| 909 | module_init(imx_drm_init); |
| 910 | module_exit(imx_drm_exit); |
| 911 | |
| 912 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); |
| 913 | MODULE_DESCRIPTION("i.MX drm driver core"); |
| 914 | MODULE_LICENSE("GPL"); |