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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> |
559d6701 TV |
35 | |
36 | #include <plat/display.h> | |
559d6701 TV |
37 | |
38 | #include "dss.h" | |
a0acb557 | 39 | #include "dss_features.h" |
559d6701 TV |
40 | |
41 | static struct { | |
42 | struct platform_device *pdev; | |
8a2cfea8 TV |
43 | |
44 | struct regulator *vdds_dsi_reg; | |
45 | struct regulator *vdds_sdi_reg; | |
46 | struct regulator *vdda_dac_reg; | |
559d6701 TV |
47 | } core; |
48 | ||
559d6701 TV |
49 | static char *def_disp_name; |
50 | module_param_named(def_disp, def_disp_name, charp, 0); | |
51 | MODULE_PARM_DESC(def_disp_name, "default display name"); | |
52 | ||
53 | #ifdef DEBUG | |
54 | unsigned int dss_debug; | |
55 | module_param_named(debug, dss_debug, bool, 0644); | |
56 | #endif | |
57 | ||
8a2cfea8 TV |
58 | /* REGULATORS */ |
59 | ||
60 | struct regulator *dss_get_vdds_dsi(void) | |
61 | { | |
62 | struct regulator *reg; | |
63 | ||
64 | if (core.vdds_dsi_reg != NULL) | |
65 | return core.vdds_dsi_reg; | |
66 | ||
67 | reg = regulator_get(&core.pdev->dev, "vdds_dsi"); | |
68 | if (!IS_ERR(reg)) | |
69 | core.vdds_dsi_reg = reg; | |
70 | ||
71 | return reg; | |
72 | } | |
73 | ||
74 | struct regulator *dss_get_vdds_sdi(void) | |
75 | { | |
76 | struct regulator *reg; | |
77 | ||
78 | if (core.vdds_sdi_reg != NULL) | |
79 | return core.vdds_sdi_reg; | |
80 | ||
81 | reg = regulator_get(&core.pdev->dev, "vdds_sdi"); | |
82 | if (!IS_ERR(reg)) | |
83 | core.vdds_sdi_reg = reg; | |
84 | ||
85 | return reg; | |
86 | } | |
87 | ||
88 | struct regulator *dss_get_vdda_dac(void) | |
89 | { | |
90 | struct regulator *reg; | |
91 | ||
92 | if (core.vdda_dac_reg != NULL) | |
93 | return core.vdda_dac_reg; | |
94 | ||
95 | reg = regulator_get(&core.pdev->dev, "vdda_dac"); | |
96 | if (!IS_ERR(reg)) | |
97 | core.vdda_dac_reg = reg; | |
98 | ||
99 | return reg; | |
100 | } | |
101 | ||
559d6701 | 102 | #if defined(CONFIG_DEBUG_FS) && defined(CONFIG_OMAP2_DSS_DEBUG_SUPPORT) |
559d6701 TV |
103 | static int dss_debug_show(struct seq_file *s, void *unused) |
104 | { | |
105 | void (*func)(struct seq_file *) = s->private; | |
106 | func(s); | |
107 | return 0; | |
108 | } | |
109 | ||
110 | static int dss_debug_open(struct inode *inode, struct file *file) | |
111 | { | |
112 | return single_open(file, dss_debug_show, inode->i_private); | |
113 | } | |
114 | ||
115 | static const struct file_operations dss_debug_fops = { | |
116 | .open = dss_debug_open, | |
117 | .read = seq_read, | |
118 | .llseek = seq_lseek, | |
119 | .release = single_release, | |
120 | }; | |
121 | ||
122 | static struct dentry *dss_debugfs_dir; | |
123 | ||
124 | static int dss_initialize_debugfs(void) | |
125 | { | |
126 | dss_debugfs_dir = debugfs_create_dir("omapdss", NULL); | |
127 | if (IS_ERR(dss_debugfs_dir)) { | |
128 | int err = PTR_ERR(dss_debugfs_dir); | |
129 | dss_debugfs_dir = NULL; | |
130 | return err; | |
131 | } | |
132 | ||
133 | debugfs_create_file("clk", S_IRUGO, dss_debugfs_dir, | |
134 | &dss_debug_dump_clocks, &dss_debug_fops); | |
135 | ||
853525d7 | 136 | #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS |
dfc0fd8d TV |
137 | debugfs_create_file("dispc_irq", S_IRUGO, dss_debugfs_dir, |
138 | &dispc_dump_irqs, &dss_debug_fops); | |
853525d7 | 139 | #endif |
dfc0fd8d | 140 | |
853525d7 | 141 | #if defined(CONFIG_OMAP2_DSS_DSI) && defined(CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS) |
dfc0fd8d TV |
142 | debugfs_create_file("dsi_irq", S_IRUGO, dss_debugfs_dir, |
143 | &dsi_dump_irqs, &dss_debug_fops); | |
144 | #endif | |
145 | ||
559d6701 TV |
146 | debugfs_create_file("dss", S_IRUGO, dss_debugfs_dir, |
147 | &dss_dump_regs, &dss_debug_fops); | |
148 | debugfs_create_file("dispc", S_IRUGO, dss_debugfs_dir, | |
149 | &dispc_dump_regs, &dss_debug_fops); | |
150 | #ifdef CONFIG_OMAP2_DSS_RFBI | |
151 | debugfs_create_file("rfbi", S_IRUGO, dss_debugfs_dir, | |
152 | &rfbi_dump_regs, &dss_debug_fops); | |
153 | #endif | |
154 | #ifdef CONFIG_OMAP2_DSS_DSI | |
155 | debugfs_create_file("dsi", S_IRUGO, dss_debugfs_dir, | |
156 | &dsi_dump_regs, &dss_debug_fops); | |
157 | #endif | |
158 | #ifdef CONFIG_OMAP2_DSS_VENC | |
159 | debugfs_create_file("venc", S_IRUGO, dss_debugfs_dir, | |
160 | &venc_dump_regs, &dss_debug_fops); | |
161 | #endif | |
162 | return 0; | |
163 | } | |
164 | ||
165 | static void dss_uninitialize_debugfs(void) | |
166 | { | |
167 | if (dss_debugfs_dir) | |
168 | debugfs_remove_recursive(dss_debugfs_dir); | |
169 | } | |
368a148e JN |
170 | #else /* CONFIG_DEBUG_FS && CONFIG_OMAP2_DSS_DEBUG_SUPPORT */ |
171 | static inline int dss_initialize_debugfs(void) | |
172 | { | |
173 | return 0; | |
174 | } | |
175 | static inline void dss_uninitialize_debugfs(void) | |
176 | { | |
177 | } | |
559d6701 TV |
178 | #endif /* CONFIG_DEBUG_FS && CONFIG_OMAP2_DSS_DEBUG_SUPPORT */ |
179 | ||
180 | /* PLATFORM DEVICE */ | |
181 | static int omap_dss_probe(struct platform_device *pdev) | |
182 | { | |
183 | struct omap_dss_board_info *pdata = pdev->dev.platform_data; | |
184 | int skip_init = 0; | |
185 | int r; | |
186 | int i; | |
187 | ||
188 | core.pdev = pdev; | |
189 | ||
a0acb557 AT |
190 | dss_features_init(); |
191 | ||
559d6701 TV |
192 | dss_init_overlay_managers(pdev); |
193 | dss_init_overlays(pdev); | |
194 | ||
96c401bc | 195 | r = dss_init_platform_driver(); |
559d6701 | 196 | if (r) { |
96c401bc | 197 | DSSERR("Failed to initialize DSS platform driver\n"); |
fce064cb | 198 | goto err_dss; |
559d6701 TV |
199 | } |
200 | ||
8b9cb3a8 SG |
201 | /* keep clocks enabled to prevent context saves/restores during init */ |
202 | dss_clk_enable(DSS_CLK_ICK | DSS_CLK_FCK1); | |
203 | ||
3448d500 | 204 | r = rfbi_init_platform_driver(); |
559d6701 | 205 | if (r) { |
3448d500 | 206 | DSSERR("Failed to initialize rfbi platform driver\n"); |
fce064cb | 207 | goto err_rfbi; |
559d6701 | 208 | } |
559d6701 | 209 | |
8a2cfea8 | 210 | r = dpi_init(pdev); |
559d6701 TV |
211 | if (r) { |
212 | DSSERR("Failed to initialize dpi\n"); | |
fce064cb | 213 | goto err_dpi; |
559d6701 TV |
214 | } |
215 | ||
060b6d9c | 216 | r = dispc_init_platform_driver(); |
559d6701 | 217 | if (r) { |
060b6d9c | 218 | DSSERR("Failed to initialize dispc platform driver\n"); |
fce064cb | 219 | goto err_dispc; |
559d6701 | 220 | } |
368a148e | 221 | |
559d6701 TV |
222 | r = venc_init(pdev); |
223 | if (r) { | |
224 | DSSERR("Failed to initialize venc\n"); | |
fce064cb | 225 | goto err_venc; |
559d6701 | 226 | } |
368a148e | 227 | |
96c401bc SG |
228 | #ifdef CONFIG_FB_OMAP_BOOTLOADER_INIT |
229 | /* DISPC_CONTROL */ | |
230 | if (omap_readl(0x48050440) & 1) /* LCD enabled? */ | |
231 | skip_init = 1; | |
232 | #endif | |
559d6701 | 233 | if (cpu_is_omap34xx()) { |
559d6701 TV |
234 | r = sdi_init(skip_init); |
235 | if (r) { | |
236 | DSSERR("Failed to initialize SDI\n"); | |
fce064cb | 237 | goto err_sdi; |
559d6701 | 238 | } |
368a148e | 239 | |
559d6701 TV |
240 | r = dsi_init(pdev); |
241 | if (r) { | |
242 | DSSERR("Failed to initialize DSI\n"); | |
fce064cb | 243 | goto err_dsi; |
559d6701 | 244 | } |
559d6701 TV |
245 | } |
246 | ||
559d6701 TV |
247 | r = dss_initialize_debugfs(); |
248 | if (r) | |
fce064cb | 249 | goto err_debugfs; |
559d6701 TV |
250 | |
251 | for (i = 0; i < pdata->num_devices; ++i) { | |
252 | struct omap_dss_device *dssdev = pdata->devices[i]; | |
253 | ||
254 | r = omap_dss_register_device(dssdev); | |
fce064cb JN |
255 | if (r) { |
256 | DSSERR("device %d %s register failed %d\n", i, | |
257 | dssdev->name ?: "unnamed", r); | |
258 | ||
259 | while (--i >= 0) | |
260 | omap_dss_unregister_device(pdata->devices[i]); | |
261 | ||
262 | goto err_register; | |
263 | } | |
559d6701 TV |
264 | |
265 | if (def_disp_name && strcmp(def_disp_name, dssdev->name) == 0) | |
266 | pdata->default_device = dssdev; | |
267 | } | |
268 | ||
8b9cb3a8 | 269 | dss_clk_disable(DSS_CLK_ICK | DSS_CLK_FCK1); |
559d6701 TV |
270 | |
271 | return 0; | |
272 | ||
fce064cb JN |
273 | err_register: |
274 | dss_uninitialize_debugfs(); | |
275 | err_debugfs: | |
276 | if (cpu_is_omap34xx()) | |
277 | dsi_exit(); | |
278 | err_dsi: | |
279 | if (cpu_is_omap34xx()) | |
280 | sdi_exit(); | |
281 | err_sdi: | |
282 | venc_exit(); | |
283 | err_venc: | |
060b6d9c | 284 | dispc_uninit_platform_driver(); |
fce064cb JN |
285 | err_dispc: |
286 | dpi_exit(); | |
287 | err_dpi: | |
3448d500 | 288 | rfbi_uninit_platform_driver(); |
fce064cb | 289 | err_rfbi: |
96c401bc | 290 | dss_uninit_platform_driver(); |
fce064cb | 291 | err_dss: |
fce064cb | 292 | |
559d6701 TV |
293 | return r; |
294 | } | |
295 | ||
296 | static int omap_dss_remove(struct platform_device *pdev) | |
297 | { | |
298 | struct omap_dss_board_info *pdata = pdev->dev.platform_data; | |
299 | int i; | |
559d6701 | 300 | |
559d6701 | 301 | dss_uninitialize_debugfs(); |
559d6701 | 302 | |
559d6701 | 303 | venc_exit(); |
060b6d9c | 304 | dispc_uninit_platform_driver(); |
559d6701 | 305 | dpi_exit(); |
3448d500 | 306 | rfbi_uninit_platform_driver(); |
559d6701 | 307 | if (cpu_is_omap34xx()) { |
559d6701 | 308 | dsi_exit(); |
559d6701 | 309 | sdi_exit(); |
559d6701 TV |
310 | } |
311 | ||
96c401bc | 312 | dss_uninit_platform_driver(); |
559d6701 | 313 | |
559d6701 TV |
314 | dss_uninit_overlays(pdev); |
315 | dss_uninit_overlay_managers(pdev); | |
316 | ||
317 | for (i = 0; i < pdata->num_devices; ++i) | |
318 | omap_dss_unregister_device(pdata->devices[i]); | |
319 | ||
320 | return 0; | |
321 | } | |
322 | ||
323 | static void omap_dss_shutdown(struct platform_device *pdev) | |
324 | { | |
325 | DSSDBG("shutdown\n"); | |
326 | dss_disable_all_devices(); | |
327 | } | |
328 | ||
329 | static int omap_dss_suspend(struct platform_device *pdev, pm_message_t state) | |
330 | { | |
331 | DSSDBG("suspend %d\n", state.event); | |
332 | ||
333 | return dss_suspend_all_devices(); | |
334 | } | |
335 | ||
336 | static int omap_dss_resume(struct platform_device *pdev) | |
337 | { | |
338 | DSSDBG("resume\n"); | |
339 | ||
340 | return dss_resume_all_devices(); | |
341 | } | |
342 | ||
343 | static struct platform_driver omap_dss_driver = { | |
344 | .probe = omap_dss_probe, | |
345 | .remove = omap_dss_remove, | |
346 | .shutdown = omap_dss_shutdown, | |
347 | .suspend = omap_dss_suspend, | |
348 | .resume = omap_dss_resume, | |
349 | .driver = { | |
350 | .name = "omapdss", | |
351 | .owner = THIS_MODULE, | |
352 | }, | |
353 | }; | |
354 | ||
355 | /* BUS */ | |
356 | static int dss_bus_match(struct device *dev, struct device_driver *driver) | |
357 | { | |
358 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
359 | ||
360 | DSSDBG("bus_match. dev %s/%s, drv %s\n", | |
361 | dev_name(dev), dssdev->driver_name, driver->name); | |
362 | ||
363 | return strcmp(dssdev->driver_name, driver->name) == 0; | |
364 | } | |
365 | ||
366 | static ssize_t device_name_show(struct device *dev, | |
367 | struct device_attribute *attr, char *buf) | |
368 | { | |
369 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
370 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
371 | dssdev->name ? | |
372 | dssdev->name : ""); | |
373 | } | |
374 | ||
375 | static struct device_attribute default_dev_attrs[] = { | |
376 | __ATTR(name, S_IRUGO, device_name_show, NULL), | |
377 | __ATTR_NULL, | |
378 | }; | |
379 | ||
380 | static ssize_t driver_name_show(struct device_driver *drv, char *buf) | |
381 | { | |
382 | struct omap_dss_driver *dssdrv = to_dss_driver(drv); | |
383 | return snprintf(buf, PAGE_SIZE, "%s\n", | |
384 | dssdrv->driver.name ? | |
385 | dssdrv->driver.name : ""); | |
386 | } | |
387 | static struct driver_attribute default_drv_attrs[] = { | |
388 | __ATTR(name, S_IRUGO, driver_name_show, NULL), | |
389 | __ATTR_NULL, | |
390 | }; | |
391 | ||
392 | static struct bus_type dss_bus_type = { | |
393 | .name = "omapdss", | |
394 | .match = dss_bus_match, | |
395 | .dev_attrs = default_dev_attrs, | |
396 | .drv_attrs = default_drv_attrs, | |
397 | }; | |
398 | ||
399 | static void dss_bus_release(struct device *dev) | |
400 | { | |
401 | DSSDBG("bus_release\n"); | |
402 | } | |
403 | ||
404 | static struct device dss_bus = { | |
405 | .release = dss_bus_release, | |
406 | }; | |
407 | ||
408 | struct bus_type *dss_get_bus(void) | |
409 | { | |
410 | return &dss_bus_type; | |
411 | } | |
412 | ||
413 | /* DRIVER */ | |
414 | static int dss_driver_probe(struct device *dev) | |
415 | { | |
416 | int r; | |
417 | struct omap_dss_driver *dssdrv = to_dss_driver(dev->driver); | |
418 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
419 | struct omap_dss_board_info *pdata = core.pdev->dev.platform_data; | |
420 | bool force; | |
421 | ||
422 | DSSDBG("driver_probe: dev %s/%s, drv %s\n", | |
423 | dev_name(dev), dssdev->driver_name, | |
424 | dssdrv->driver.name); | |
425 | ||
426 | dss_init_device(core.pdev, dssdev); | |
427 | ||
e020f9af TV |
428 | force = pdata->default_device == dssdev; |
429 | dss_recheck_connections(dssdev, force); | |
559d6701 TV |
430 | |
431 | r = dssdrv->probe(dssdev); | |
432 | ||
433 | if (r) { | |
434 | DSSERR("driver probe failed: %d\n", r); | |
c121b152 | 435 | dss_uninit_device(core.pdev, dssdev); |
559d6701 TV |
436 | return r; |
437 | } | |
438 | ||
439 | DSSDBG("probe done for device %s\n", dev_name(dev)); | |
440 | ||
441 | dssdev->driver = dssdrv; | |
442 | ||
443 | return 0; | |
444 | } | |
445 | ||
446 | static int dss_driver_remove(struct device *dev) | |
447 | { | |
448 | struct omap_dss_driver *dssdrv = to_dss_driver(dev->driver); | |
449 | struct omap_dss_device *dssdev = to_dss_device(dev); | |
450 | ||
451 | DSSDBG("driver_remove: dev %s/%s\n", dev_name(dev), | |
452 | dssdev->driver_name); | |
453 | ||
454 | dssdrv->remove(dssdev); | |
455 | ||
456 | dss_uninit_device(core.pdev, dssdev); | |
457 | ||
458 | dssdev->driver = NULL; | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | int omap_dss_register_driver(struct omap_dss_driver *dssdriver) | |
464 | { | |
465 | dssdriver->driver.bus = &dss_bus_type; | |
466 | dssdriver->driver.probe = dss_driver_probe; | |
467 | dssdriver->driver.remove = dss_driver_remove; | |
96adcece TV |
468 | |
469 | if (dssdriver->get_resolution == NULL) | |
470 | dssdriver->get_resolution = omapdss_default_get_resolution; | |
a2699504 TV |
471 | if (dssdriver->get_recommended_bpp == NULL) |
472 | dssdriver->get_recommended_bpp = | |
473 | omapdss_default_get_recommended_bpp; | |
96adcece | 474 | |
559d6701 TV |
475 | return driver_register(&dssdriver->driver); |
476 | } | |
477 | EXPORT_SYMBOL(omap_dss_register_driver); | |
478 | ||
479 | void omap_dss_unregister_driver(struct omap_dss_driver *dssdriver) | |
480 | { | |
481 | driver_unregister(&dssdriver->driver); | |
482 | } | |
483 | EXPORT_SYMBOL(omap_dss_unregister_driver); | |
484 | ||
485 | /* DEVICE */ | |
486 | static void reset_device(struct device *dev, int check) | |
487 | { | |
488 | u8 *dev_p = (u8 *)dev; | |
489 | u8 *dev_end = dev_p + sizeof(*dev); | |
490 | void *saved_pdata; | |
491 | ||
492 | saved_pdata = dev->platform_data; | |
493 | if (check) { | |
494 | /* | |
495 | * Check if there is any other setting than platform_data | |
496 | * in struct device; warn that these will be reset by our | |
497 | * init. | |
498 | */ | |
499 | dev->platform_data = NULL; | |
500 | while (dev_p < dev_end) { | |
501 | if (*dev_p) { | |
502 | WARN("%s: struct device fields will be " | |
503 | "discarded\n", | |
504 | __func__); | |
505 | break; | |
506 | } | |
507 | dev_p++; | |
508 | } | |
509 | } | |
510 | memset(dev, 0, sizeof(*dev)); | |
511 | dev->platform_data = saved_pdata; | |
512 | } | |
513 | ||
514 | ||
515 | static void omap_dss_dev_release(struct device *dev) | |
516 | { | |
517 | reset_device(dev, 0); | |
518 | } | |
519 | ||
520 | int omap_dss_register_device(struct omap_dss_device *dssdev) | |
521 | { | |
522 | static int dev_num; | |
559d6701 TV |
523 | |
524 | WARN_ON(!dssdev->driver_name); | |
525 | ||
526 | reset_device(&dssdev->dev, 1); | |
527 | dssdev->dev.bus = &dss_bus_type; | |
528 | dssdev->dev.parent = &dss_bus; | |
529 | dssdev->dev.release = omap_dss_dev_release; | |
530 | dev_set_name(&dssdev->dev, "display%d", dev_num++); | |
e020f9af | 531 | return device_register(&dssdev->dev); |
559d6701 TV |
532 | } |
533 | ||
534 | void omap_dss_unregister_device(struct omap_dss_device *dssdev) | |
535 | { | |
536 | device_unregister(&dssdev->dev); | |
559d6701 TV |
537 | } |
538 | ||
539 | /* BUS */ | |
540 | static int omap_dss_bus_register(void) | |
541 | { | |
542 | int r; | |
543 | ||
544 | r = bus_register(&dss_bus_type); | |
545 | if (r) { | |
546 | DSSERR("bus register failed\n"); | |
547 | return r; | |
548 | } | |
549 | ||
550 | dev_set_name(&dss_bus, "omapdss"); | |
551 | r = device_register(&dss_bus); | |
552 | if (r) { | |
553 | DSSERR("bus driver register failed\n"); | |
554 | bus_unregister(&dss_bus_type); | |
555 | return r; | |
556 | } | |
557 | ||
558 | return 0; | |
559 | } | |
560 | ||
561 | /* INIT */ | |
562 | ||
563 | #ifdef CONFIG_OMAP2_DSS_MODULE | |
564 | static void omap_dss_bus_unregister(void) | |
565 | { | |
566 | device_unregister(&dss_bus); | |
567 | ||
568 | bus_unregister(&dss_bus_type); | |
569 | } | |
570 | ||
571 | static int __init omap_dss_init(void) | |
572 | { | |
573 | int r; | |
574 | ||
575 | r = omap_dss_bus_register(); | |
576 | if (r) | |
577 | return r; | |
578 | ||
579 | r = platform_driver_register(&omap_dss_driver); | |
580 | if (r) { | |
581 | omap_dss_bus_unregister(); | |
582 | return r; | |
583 | } | |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
588 | static void __exit omap_dss_exit(void) | |
589 | { | |
8a2cfea8 TV |
590 | if (core.vdds_dsi_reg != NULL) { |
591 | regulator_put(core.vdds_dsi_reg); | |
592 | core.vdds_dsi_reg = NULL; | |
593 | } | |
594 | ||
595 | if (core.vdds_sdi_reg != NULL) { | |
596 | regulator_put(core.vdds_sdi_reg); | |
597 | core.vdds_sdi_reg = NULL; | |
598 | } | |
599 | ||
600 | if (core.vdda_dac_reg != NULL) { | |
601 | regulator_put(core.vdda_dac_reg); | |
602 | core.vdda_dac_reg = NULL; | |
603 | } | |
604 | ||
559d6701 TV |
605 | platform_driver_unregister(&omap_dss_driver); |
606 | ||
607 | omap_dss_bus_unregister(); | |
608 | } | |
609 | ||
610 | module_init(omap_dss_init); | |
611 | module_exit(omap_dss_exit); | |
612 | #else | |
613 | static int __init omap_dss_init(void) | |
614 | { | |
615 | return omap_dss_bus_register(); | |
616 | } | |
617 | ||
618 | static int __init omap_dss_init2(void) | |
619 | { | |
620 | return platform_driver_register(&omap_dss_driver); | |
621 | } | |
622 | ||
623 | core_initcall(omap_dss_init); | |
624 | device_initcall(omap_dss_init2); | |
625 | #endif | |
626 | ||
627 | MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>"); | |
628 | MODULE_DESCRIPTION("OMAP2/3 Display Subsystem"); | |
629 | MODULE_LICENSE("GPL v2"); | |
630 |