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559d6701 TV |
1 | /* |
2 | * linux/drivers/video/omap2/dss/core.c | |
3 | * | |
4 | * Copyright (C) 2009 Nokia Corporation | |
5 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> | |
6 | * | |
7 | * Some code and ideas taken from drivers/video/omap/ driver | |
8 | * by Imre Deak. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License version 2 as published by | |
12 | * the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
17 | * more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License along with | |
20 | * this program. If not, see <http://www.gnu.org/licenses/>. | |
21 | */ | |
22 | ||
23 | #define DSS_SUBSYS_NAME "CORE" | |
24 | ||
25 | #include <linux/kernel.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/clk.h> | |
28 | #include <linux/err.h> | |
29 | #include <linux/platform_device.h> | |
30 | #include <linux/seq_file.h> | |
31 | #include <linux/debugfs.h> | |
32 | #include <linux/io.h> | |
33 | #include <linux/device.h> | |
8a2cfea8 | 34 | #include <linux/regulator/consumer.h> |
736f29cd | 35 | #include <linux/suspend.h> |
5274484b | 36 | #include <linux/slab.h> |
559d6701 | 37 | |
a0b38cc4 | 38 | #include <video/omapdss.h> |
559d6701 TV |
39 | |
40 | #include "dss.h" | |
a0acb557 | 41 | #include "dss_features.h" |
559d6701 TV |
42 | |
43 | static struct { | |
44 | struct platform_device *pdev; | |
8a2cfea8 TV |
45 | |
46 | struct regulator *vdds_dsi_reg; | |
47 | struct regulator *vdds_sdi_reg; | |
c018c673 TV |
48 | |
49 | const char *default_display_name; | |
559d6701 TV |
50 | } core; |
51 | ||
559d6701 TV |
52 | static char *def_disp_name; |
53 | module_param_named(def_disp, def_disp_name, charp, 0); | |
ac425ed5 | 54 | MODULE_PARM_DESC(def_disp, "default display name"); |
559d6701 | 55 | |
6a03fca9 TV |
56 | const char *dss_get_default_display_name(void) |
57 | { | |
58 | return core.default_display_name; | |
59 | } | |
60 | ||
b2c7d54f TV |
61 | enum omapdss_version omapdss_get_version(void) |
62 | { | |
63 | struct omap_dss_board_info *pdata = core.pdev->dev.platform_data; | |
64 | return pdata->version; | |
65 | } | |
66 | EXPORT_SYMBOL(omapdss_get_version); | |
67 | ||
8a2cfea8 TV |
68 | /* REGULATORS */ |
69 | ||
70 | struct regulator *dss_get_vdds_dsi(void) | |
71 | { | |
72 | struct regulator *reg; | |
73 | ||
74 | if (core.vdds_dsi_reg != NULL) | |
75 | return core.vdds_dsi_reg; | |
76 | ||
77 | reg = regulator_get(&core.pdev->dev, "vdds_dsi"); | |
78 | if (!IS_ERR(reg)) | |
79 | core.vdds_dsi_reg = reg; | |
80 | ||
81 | return reg; | |
82 | } | |
83 | ||
84 | struct regulator *dss_get_vdds_sdi(void) | |
85 | { | |
86 | struct regulator *reg; | |
87 | ||
88 | if (core.vdds_sdi_reg != NULL) | |
89 | return core.vdds_sdi_reg; | |
90 | ||
91 | reg = regulator_get(&core.pdev->dev, "vdds_sdi"); | |
92 | if (!IS_ERR(reg)) | |
93 | core.vdds_sdi_reg = reg; | |
94 | ||
95 | return reg; | |
96 | } | |
97 | ||
00928eaf TV |
98 | int dss_get_ctx_loss_count(struct device *dev) |
99 | { | |
100 | struct omap_dss_board_info *board_data = core.pdev->dev.platform_data; | |
101 | int cnt; | |
102 | ||
103 | if (!board_data->get_context_loss_count) | |
104 | return -ENOENT; | |
105 | ||
106 | cnt = board_data->get_context_loss_count(dev); | |
107 | ||
108 | WARN_ONCE(cnt < 0, "get_context_loss_count failed: %d\n", cnt); | |
109 | ||
110 | return cnt; | |
111 | } | |
112 | ||
113 | int dss_dsi_enable_pads(int dsi_id, unsigned lane_mask) | |
114 | { | |
115 | struct omap_dss_board_info *board_data = core.pdev->dev.platform_data; | |
116 | ||
117 | if (!board_data->dsi_enable_pads) | |
118 | return -ENOENT; | |
119 | ||
120 | return board_data->dsi_enable_pads(dsi_id, lane_mask); | |
121 | } | |
122 | ||
123 | void dss_dsi_disable_pads(int dsi_id, unsigned lane_mask) | |
124 | { | |
125 | struct omap_dss_board_info *board_data = core.pdev->dev.platform_data; | |
126 | ||
da6c5687 | 127 | if (!board_data->dsi_disable_pads) |
00928eaf TV |
128 | return; |
129 | ||
130 | return board_data->dsi_disable_pads(dsi_id, lane_mask); | |
131 | } | |
132 | ||
a8081d31 TV |
133 | int dss_set_min_bus_tput(struct device *dev, unsigned long tput) |
134 | { | |
135 | struct omap_dss_board_info *pdata = core.pdev->dev.platform_data; | |
136 | ||
137 | if (pdata->set_min_bus_tput) | |
138 | return pdata->set_min_bus_tput(dev, tput); | |
139 | else | |
140 | return 0; | |
141 | } | |
142 | ||
1b3bcb33 | 143 | #if defined(CONFIG_OMAP2_DSS_DEBUGFS) |
559d6701 TV |
144 | static int dss_debug_show(struct seq_file *s, void *unused) |
145 | { | |
146 | void (*func)(struct seq_file *) = s->private; | |
147 | func(s); | |
148 | return 0; | |
149 | } | |
150 | ||
151 | static int dss_debug_open(struct inode *inode, struct file *file) | |
152 | { | |
153 | return single_open(file, dss_debug_show, inode->i_private); | |
154 | } | |
155 | ||
156 | static const struct file_operations dss_debug_fops = { | |
157 | .open = dss_debug_open, | |
158 | .read = seq_read, | |
159 | .llseek = seq_lseek, | |
160 | .release = single_release, | |
161 | }; | |
162 | ||
163 | static struct dentry *dss_debugfs_dir; | |
164 | ||
165 | static int dss_initialize_debugfs(void) | |
166 | { | |
167 | dss_debugfs_dir = debugfs_create_dir("omapdss", NULL); | |
168 | if (IS_ERR(dss_debugfs_dir)) { | |
169 | int err = PTR_ERR(dss_debugfs_dir); | |
170 | dss_debugfs_dir = NULL; | |
171 | return err; | |
172 | } | |
173 | ||
174 | debugfs_create_file("clk", S_IRUGO, dss_debugfs_dir, | |
175 | &dss_debug_dump_clocks, &dss_debug_fops); | |
176 | ||
559d6701 TV |
177 | return 0; |
178 | } | |
179 | ||
180 | static void dss_uninitialize_debugfs(void) | |
181 | { | |
182 | if (dss_debugfs_dir) | |
183 | debugfs_remove_recursive(dss_debugfs_dir); | |
184 | } | |
e40402cf TV |
185 | |
186 | int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *)) | |
187 | { | |
188 | struct dentry *d; | |
189 | ||
190 | d = debugfs_create_file(name, S_IRUGO, dss_debugfs_dir, | |
191 | write, &dss_debug_fops); | |
192 | ||
193 | if (IS_ERR(d)) | |
194 | return PTR_ERR(d); | |
195 | ||
196 | return 0; | |
197 | } | |
1b3bcb33 | 198 | #else /* CONFIG_OMAP2_DSS_DEBUGFS */ |
368a148e JN |
199 | static inline int dss_initialize_debugfs(void) |
200 | { | |
201 | return 0; | |
202 | } | |
203 | static inline void dss_uninitialize_debugfs(void) | |
204 | { | |
205 | } | |
0e9a126e | 206 | int dss_debugfs_create_file(const char *name, void (*write)(struct seq_file *)) |
e40402cf TV |
207 | { |
208 | return 0; | |
209 | } | |
1b3bcb33 | 210 | #endif /* CONFIG_OMAP2_DSS_DEBUGFS */ |
559d6701 TV |
211 | |
212 | /* PLATFORM DEVICE */ | |
736f29cd TV |
213 | static int omap_dss_pm_notif(struct notifier_block *b, unsigned long v, void *d) |
214 | { | |
215 | DSSDBG("pm notif %lu\n", v); | |
216 | ||
217 | switch (v) { | |
218 | case PM_SUSPEND_PREPARE: | |
219 | DSSDBG("suspending displays\n"); | |
220 | return dss_suspend_all_devices(); | |
221 | ||
222 | case PM_POST_SUSPEND: | |
223 | DSSDBG("resuming displays\n"); | |
224 | return dss_resume_all_devices(); | |
225 | ||
226 | default: | |
227 | return 0; | |
228 | } | |
229 | } | |
230 | ||
231 | static struct notifier_block omap_dss_pm_notif_block = { | |
232 | .notifier_call = omap_dss_pm_notif, | |
233 | }; | |
234 | ||
6e7e8f06 | 235 | static int __init omap_dss_probe(struct platform_device *pdev) |
559d6701 TV |
236 | { |
237 | struct omap_dss_board_info *pdata = pdev->dev.platform_data; | |
559d6701 | 238 | int r; |
559d6701 TV |
239 | |
240 | core.pdev = pdev; | |
241 | ||
b2c7d54f | 242 | dss_features_init(omapdss_get_version()); |
a0acb557 | 243 | |
58f25548 TV |
244 | dss_apply_init(); |
245 | ||
559d6701 TV |
246 | dss_init_overlay_managers(pdev); |
247 | dss_init_overlays(pdev); | |
248 | ||
559d6701 TV |
249 | r = dss_initialize_debugfs(); |
250 | if (r) | |
fce064cb | 251 | goto err_debugfs; |
559d6701 | 252 | |
c018c673 TV |
253 | if (def_disp_name) |
254 | core.default_display_name = def_disp_name; | |
255 | else if (pdata->default_device) | |
256 | core.default_display_name = pdata->default_device->name; | |
257 | ||
736f29cd TV |
258 | register_pm_notifier(&omap_dss_pm_notif_block); |
259 | ||
559d6701 TV |
260 | return 0; |
261 | ||
fce064cb | 262 | err_debugfs: |
fce064cb | 263 | |
559d6701 TV |
264 | return r; |
265 | } | |
266 | ||
267 | static int omap_dss_remove(struct platform_device *pdev) | |
268 | { | |
736f29cd TV |
269 | unregister_pm_notifier(&omap_dss_pm_notif_block); |
270 | ||
559d6701 | 271 | dss_uninitialize_debugfs(); |
559d6701 | 272 | |
559d6701 TV |
273 | dss_uninit_overlays(pdev); |
274 | dss_uninit_overlay_managers(pdev); | |
275 | ||
559d6701 TV |
276 | return 0; |
277 | } | |
278 | ||
279 | static void omap_dss_shutdown(struct platform_device *pdev) | |
280 | { | |
281 | DSSDBG("shutdown\n"); | |
282 | dss_disable_all_devices(); | |
283 | } | |
284 | ||
559d6701 | 285 | static struct platform_driver omap_dss_driver = { |
559d6701 TV |
286 | .remove = omap_dss_remove, |
287 | .shutdown = omap_dss_shutdown, | |
559d6701 TV |
288 | .driver = { |
289 | .name = "omapdss", | |
290 | .owner = THIS_MODULE, | |
291 | }, | |
292 | }; | |
293 | ||
294 | /* BUS */ | |
295 | static int dss_bus_match(struct device *dev, struct device_driver *driver) | |
296 | { | |
297 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
298 | ||
299 | DSSDBG("bus_match. dev %s/%s, drv %s\n", | |
300 | dev_name(dev), dssdev->driver_name, driver->name); | |
301 | ||
302 | return strcmp(dssdev->driver_name, driver->name) == 0; | |
303 | } | |
304 | ||
305 | static ssize_t device_name_show(struct device *dev, | |
306 | struct device_attribute *attr, char *buf) | |
307 | { | |
308 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
309 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
310 | dssdev->name ? | |
311 | dssdev->name : ""); | |
312 | } | |
313 | ||
314 | static struct device_attribute default_dev_attrs[] = { | |
315 | __ATTR(name, S_IRUGO, device_name_show, NULL), | |
316 | __ATTR_NULL, | |
317 | }; | |
318 | ||
319 | static ssize_t driver_name_show(struct device_driver *drv, char *buf) | |
320 | { | |
321 | struct omap_dss_driver *dssdrv = to_dss_driver(drv); | |
322 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
323 | dssdrv->driver.name ? | |
324 | dssdrv->driver.name : ""); | |
325 | } | |
326 | static struct driver_attribute default_drv_attrs[] = { | |
327 | __ATTR(name, S_IRUGO, driver_name_show, NULL), | |
328 | __ATTR_NULL, | |
329 | }; | |
330 | ||
331 | static struct bus_type dss_bus_type = { | |
332 | .name = "omapdss", | |
333 | .match = dss_bus_match, | |
334 | .dev_attrs = default_dev_attrs, | |
335 | .drv_attrs = default_drv_attrs, | |
336 | }; | |
337 | ||
338 | static void dss_bus_release(struct device *dev) | |
339 | { | |
340 | DSSDBG("bus_release\n"); | |
341 | } | |
342 | ||
343 | static struct device dss_bus = { | |
344 | .release = dss_bus_release, | |
345 | }; | |
346 | ||
347 | struct bus_type *dss_get_bus(void) | |
348 | { | |
349 | return &dss_bus_type; | |
350 | } | |
351 | ||
352 | /* DRIVER */ | |
353 | static int dss_driver_probe(struct device *dev) | |
354 | { | |
355 | int r; | |
356 | struct omap_dss_driver *dssdrv = to_dss_driver(dev->driver); | |
357 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
559d6701 TV |
358 | |
359 | DSSDBG("driver_probe: dev %s/%s, drv %s\n", | |
360 | dev_name(dev), dssdev->driver_name, | |
361 | dssdrv->driver.name); | |
362 | ||
47eb6763 TV |
363 | r = dss_init_device(core.pdev, dssdev); |
364 | if (r) | |
365 | return r; | |
559d6701 | 366 | |
559d6701 TV |
367 | r = dssdrv->probe(dssdev); |
368 | ||
369 | if (r) { | |
370 | DSSERR("driver probe failed: %d\n", r); | |
c121b152 | 371 | dss_uninit_device(core.pdev, dssdev); |
559d6701 TV |
372 | return r; |
373 | } | |
374 | ||
375 | DSSDBG("probe done for device %s\n", dev_name(dev)); | |
376 | ||
377 | dssdev->driver = dssdrv; | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
382 | static int dss_driver_remove(struct device *dev) | |
383 | { | |
384 | struct omap_dss_driver *dssdrv = to_dss_driver(dev->driver); | |
385 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
386 | ||
387 | DSSDBG("driver_remove: dev %s/%s\n", dev_name(dev), | |
388 | dssdev->driver_name); | |
389 | ||
390 | dssdrv->remove(dssdev); | |
391 | ||
392 | dss_uninit_device(core.pdev, dssdev); | |
393 | ||
394 | dssdev->driver = NULL; | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | int omap_dss_register_driver(struct omap_dss_driver *dssdriver) | |
400 | { | |
401 | dssdriver->driver.bus = &dss_bus_type; | |
402 | dssdriver->driver.probe = dss_driver_probe; | |
403 | dssdriver->driver.remove = dss_driver_remove; | |
96adcece TV |
404 | |
405 | if (dssdriver->get_resolution == NULL) | |
406 | dssdriver->get_resolution = omapdss_default_get_resolution; | |
a2699504 TV |
407 | if (dssdriver->get_recommended_bpp == NULL) |
408 | dssdriver->get_recommended_bpp = | |
409 | omapdss_default_get_recommended_bpp; | |
4b6430fc GI |
410 | if (dssdriver->get_timings == NULL) |
411 | dssdriver->get_timings = omapdss_default_get_timings; | |
96adcece | 412 | |
559d6701 TV |
413 | return driver_register(&dssdriver->driver); |
414 | } | |
415 | EXPORT_SYMBOL(omap_dss_register_driver); | |
416 | ||
417 | void omap_dss_unregister_driver(struct omap_dss_driver *dssdriver) | |
418 | { | |
419 | driver_unregister(&dssdriver->driver); | |
420 | } | |
421 | EXPORT_SYMBOL(omap_dss_unregister_driver); | |
422 | ||
423 | /* DEVICE */ | |
559d6701 TV |
424 | |
425 | static void omap_dss_dev_release(struct device *dev) | |
426 | { | |
5274484b TV |
427 | struct omap_dss_device *dssdev = to_dss_device(dev); |
428 | kfree(dssdev); | |
559d6701 TV |
429 | } |
430 | ||
8768a52f TV |
431 | static int disp_num_counter; |
432 | ||
5274484b | 433 | struct omap_dss_device *dss_alloc_and_init_device(struct device *parent) |
559d6701 | 434 | { |
5274484b TV |
435 | struct omap_dss_device *dssdev; |
436 | ||
437 | dssdev = kzalloc(sizeof(*dssdev), GFP_KERNEL); | |
438 | if (!dssdev) | |
439 | return NULL; | |
8768a52f | 440 | |
559d6701 | 441 | dssdev->dev.bus = &dss_bus_type; |
35deca3d | 442 | dssdev->dev.parent = parent; |
559d6701 | 443 | dssdev->dev.release = omap_dss_dev_release; |
8768a52f | 444 | dev_set_name(&dssdev->dev, "display%d", disp_num_counter++); |
5274484b TV |
445 | |
446 | device_initialize(&dssdev->dev); | |
447 | ||
448 | return dssdev; | |
559d6701 TV |
449 | } |
450 | ||
5274484b TV |
451 | int dss_add_device(struct omap_dss_device *dssdev) |
452 | { | |
453 | return device_add(&dssdev->dev); | |
454 | } | |
455 | ||
456 | void dss_put_device(struct omap_dss_device *dssdev) | |
457 | { | |
458 | put_device(&dssdev->dev); | |
459 | } | |
460 | ||
461 | void dss_unregister_device(struct omap_dss_device *dssdev) | |
559d6701 TV |
462 | { |
463 | device_unregister(&dssdev->dev); | |
559d6701 TV |
464 | } |
465 | ||
35deca3d TV |
466 | static int dss_unregister_dss_dev(struct device *dev, void *data) |
467 | { | |
468 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
5274484b | 469 | dss_unregister_device(dssdev); |
35deca3d TV |
470 | return 0; |
471 | } | |
472 | ||
5274484b | 473 | void dss_unregister_child_devices(struct device *parent) |
35deca3d TV |
474 | { |
475 | device_for_each_child(parent, NULL, dss_unregister_dss_dev); | |
476 | } | |
477 | ||
5274484b TV |
478 | void dss_copy_device_pdata(struct omap_dss_device *dst, |
479 | const struct omap_dss_device *src) | |
480 | { | |
481 | u8 *d = (u8 *)dst; | |
482 | u8 *s = (u8 *)src; | |
483 | size_t dsize = sizeof(struct device); | |
484 | ||
485 | memcpy(d + dsize, s + dsize, sizeof(struct omap_dss_device) - dsize); | |
486 | } | |
487 | ||
559d6701 | 488 | /* BUS */ |
6e7e8f06 | 489 | static int __init omap_dss_bus_register(void) |
559d6701 TV |
490 | { |
491 | int r; | |
492 | ||
493 | r = bus_register(&dss_bus_type); | |
494 | if (r) { | |
495 | DSSERR("bus register failed\n"); | |
496 | return r; | |
497 | } | |
498 | ||
499 | dev_set_name(&dss_bus, "omapdss"); | |
500 | r = device_register(&dss_bus); | |
501 | if (r) { | |
502 | DSSERR("bus driver register failed\n"); | |
503 | bus_unregister(&dss_bus_type); | |
504 | return r; | |
505 | } | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | /* INIT */ | |
461395c4 TV |
511 | static int (*dss_output_drv_reg_funcs[])(void) __initdata = { |
512 | #ifdef CONFIG_OMAP2_DSS_DPI | |
513 | dpi_init_platform_driver, | |
514 | #endif | |
515 | #ifdef CONFIG_OMAP2_DSS_SDI | |
516 | sdi_init_platform_driver, | |
517 | #endif | |
518 | #ifdef CONFIG_OMAP2_DSS_RFBI | |
519 | rfbi_init_platform_driver, | |
520 | #endif | |
521 | #ifdef CONFIG_OMAP2_DSS_VENC | |
522 | venc_init_platform_driver, | |
523 | #endif | |
524 | #ifdef CONFIG_OMAP2_DSS_DSI | |
525 | dsi_init_platform_driver, | |
526 | #endif | |
527 | #ifdef CONFIG_OMAP4_DSS_HDMI | |
528 | hdmi_init_platform_driver, | |
529 | #endif | |
530 | }; | |
531 | ||
532 | static void (*dss_output_drv_unreg_funcs[])(void) __exitdata = { | |
533 | #ifdef CONFIG_OMAP2_DSS_DPI | |
534 | dpi_uninit_platform_driver, | |
535 | #endif | |
536 | #ifdef CONFIG_OMAP2_DSS_SDI | |
537 | sdi_uninit_platform_driver, | |
538 | #endif | |
539 | #ifdef CONFIG_OMAP2_DSS_RFBI | |
540 | rfbi_uninit_platform_driver, | |
541 | #endif | |
542 | #ifdef CONFIG_OMAP2_DSS_VENC | |
543 | venc_uninit_platform_driver, | |
544 | #endif | |
545 | #ifdef CONFIG_OMAP2_DSS_DSI | |
546 | dsi_uninit_platform_driver, | |
547 | #endif | |
548 | #ifdef CONFIG_OMAP4_DSS_HDMI | |
549 | hdmi_uninit_platform_driver, | |
550 | #endif | |
551 | }; | |
552 | ||
553 | static bool dss_output_drv_loaded[ARRAY_SIZE(dss_output_drv_reg_funcs)]; | |
559d6701 | 554 | |
dc7e57fa TV |
555 | static int __init omap_dss_register_drivers(void) |
556 | { | |
557 | int r; | |
461395c4 | 558 | int i; |
dc7e57fa | 559 | |
11436e1d | 560 | r = platform_driver_probe(&omap_dss_driver, omap_dss_probe); |
dc7e57fa TV |
561 | if (r) |
562 | return r; | |
563 | ||
564 | r = dss_init_platform_driver(); | |
565 | if (r) { | |
566 | DSSERR("Failed to initialize DSS platform driver\n"); | |
567 | goto err_dss; | |
568 | } | |
569 | ||
570 | r = dispc_init_platform_driver(); | |
571 | if (r) { | |
572 | DSSERR("Failed to initialize dispc platform driver\n"); | |
573 | goto err_dispc; | |
574 | } | |
575 | ||
461395c4 TV |
576 | /* |
577 | * It's ok if the output-driver register fails. It happens, for example, | |
578 | * when there is no output-device (e.g. SDI for OMAP4). | |
579 | */ | |
580 | for (i = 0; i < ARRAY_SIZE(dss_output_drv_reg_funcs); ++i) { | |
581 | r = dss_output_drv_reg_funcs[i](); | |
582 | if (r == 0) | |
583 | dss_output_drv_loaded[i] = true; | |
dc7e57fa TV |
584 | } |
585 | ||
586 | return 0; | |
587 | ||
dc7e57fa TV |
588 | err_dispc: |
589 | dss_uninit_platform_driver(); | |
590 | err_dss: | |
591 | platform_driver_unregister(&omap_dss_driver); | |
592 | ||
593 | return r; | |
594 | } | |
595 | ||
596 | static void __exit omap_dss_unregister_drivers(void) | |
597 | { | |
461395c4 TV |
598 | int i; |
599 | ||
600 | for (i = 0; i < ARRAY_SIZE(dss_output_drv_unreg_funcs); ++i) { | |
601 | if (dss_output_drv_loaded[i]) | |
602 | dss_output_drv_unreg_funcs[i](); | |
603 | } | |
604 | ||
dc7e57fa TV |
605 | dispc_uninit_platform_driver(); |
606 | dss_uninit_platform_driver(); | |
607 | ||
608 | platform_driver_unregister(&omap_dss_driver); | |
609 | } | |
610 | ||
559d6701 TV |
611 | #ifdef CONFIG_OMAP2_DSS_MODULE |
612 | static void omap_dss_bus_unregister(void) | |
613 | { | |
614 | device_unregister(&dss_bus); | |
615 | ||
616 | bus_unregister(&dss_bus_type); | |
617 | } | |
618 | ||
619 | static int __init omap_dss_init(void) | |
620 | { | |
621 | int r; | |
622 | ||
623 | r = omap_dss_bus_register(); | |
624 | if (r) | |
625 | return r; | |
626 | ||
dc7e57fa | 627 | r = omap_dss_register_drivers(); |
559d6701 TV |
628 | if (r) { |
629 | omap_dss_bus_unregister(); | |
630 | return r; | |
631 | } | |
632 | ||
633 | return 0; | |
634 | } | |
635 | ||
636 | static void __exit omap_dss_exit(void) | |
637 | { | |
8a2cfea8 TV |
638 | if (core.vdds_dsi_reg != NULL) { |
639 | regulator_put(core.vdds_dsi_reg); | |
640 | core.vdds_dsi_reg = NULL; | |
641 | } | |
642 | ||
643 | if (core.vdds_sdi_reg != NULL) { | |
644 | regulator_put(core.vdds_sdi_reg); | |
645 | core.vdds_sdi_reg = NULL; | |
646 | } | |
647 | ||
dc7e57fa | 648 | omap_dss_unregister_drivers(); |
559d6701 TV |
649 | |
650 | omap_dss_bus_unregister(); | |
651 | } | |
652 | ||
653 | module_init(omap_dss_init); | |
654 | module_exit(omap_dss_exit); | |
655 | #else | |
656 | static int __init omap_dss_init(void) | |
657 | { | |
658 | return omap_dss_bus_register(); | |
659 | } | |
660 | ||
661 | static int __init omap_dss_init2(void) | |
662 | { | |
dc7e57fa | 663 | return omap_dss_register_drivers(); |
559d6701 TV |
664 | } |
665 | ||
666 | core_initcall(omap_dss_init); | |
667 | device_initcall(omap_dss_init2); | |
668 | #endif | |
669 | ||
670 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); | |
671 | MODULE_DESCRIPTION("OMAP2/3 Display Subsystem"); | |
672 | MODULE_LICENSE("GPL v2"); | |
673 |