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