Commit | Line | Data |
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d8408326 SWK |
1 | /* |
2 | * Copyright (C) 2011 Samsung Electronics Co.Ltd | |
3 | * Authors: | |
4 | * Inki Dae <inki.dae@samsung.com> | |
5 | * Seung-Woo Kim <sw0312.kim@samsung.com> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2 of the License, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | */ | |
13 | ||
14 | #include "drmP.h" | |
15 | ||
16 | #include <linux/kernel.h> | |
17 | #include <linux/wait.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/platform_device.h> | |
20 | #include <linux/pm_runtime.h> | |
21 | ||
22 | #include <drm/exynos_drm.h> | |
23 | ||
24 | #include "exynos_drm_drv.h" | |
25 | #include "exynos_drm_hdmi.h" | |
26 | ||
27 | #define to_context(dev) platform_get_drvdata(to_platform_device(dev)) | |
28 | #define to_subdrv(dev) to_context(dev) | |
29 | #define get_ctx_from_subdrv(subdrv) container_of(subdrv,\ | |
30 | struct drm_hdmi_context, subdrv); | |
31 | ||
32 | /* these callback points shoud be set by specific drivers. */ | |
33 | static struct exynos_hdmi_display_ops *hdmi_display_ops; | |
34 | static struct exynos_hdmi_manager_ops *hdmi_manager_ops; | |
35 | static struct exynos_hdmi_overlay_ops *hdmi_overlay_ops; | |
36 | ||
37 | struct drm_hdmi_context { | |
38 | struct exynos_drm_subdrv subdrv; | |
39 | struct exynos_drm_hdmi_context *hdmi_ctx; | |
40 | struct exynos_drm_hdmi_context *mixer_ctx; | |
41 | struct work_struct work; | |
42 | }; | |
43 | ||
44 | void exynos_drm_display_ops_register(struct exynos_hdmi_display_ops | |
45 | *display_ops) | |
46 | { | |
47 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
48 | ||
49 | if (display_ops) | |
50 | hdmi_display_ops = display_ops; | |
51 | } | |
52 | EXPORT_SYMBOL(exynos_drm_display_ops_register); | |
53 | ||
54 | void exynos_drm_manager_ops_register(struct exynos_hdmi_manager_ops | |
55 | *manager_ops) | |
56 | { | |
57 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
58 | ||
59 | if (manager_ops) | |
60 | hdmi_manager_ops = manager_ops; | |
61 | } | |
62 | EXPORT_SYMBOL(exynos_drm_manager_ops_register); | |
63 | ||
64 | void exynos_drm_overlay_ops_register(struct exynos_hdmi_overlay_ops | |
65 | *overlay_ops) | |
66 | { | |
67 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
68 | ||
69 | if (overlay_ops) | |
70 | hdmi_overlay_ops = overlay_ops; | |
71 | } | |
72 | EXPORT_SYMBOL(exynos_drm_overlay_ops_register); | |
73 | ||
74 | static bool drm_hdmi_is_connected(struct device *dev) | |
75 | { | |
76 | struct drm_hdmi_context *ctx = to_context(dev); | |
77 | ||
78 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
79 | ||
80 | if (hdmi_display_ops && hdmi_display_ops->is_connected) | |
81 | return hdmi_display_ops->is_connected(ctx->hdmi_ctx->ctx); | |
82 | ||
83 | return false; | |
84 | } | |
85 | ||
86 | static int drm_hdmi_get_edid(struct device *dev, | |
87 | struct drm_connector *connector, u8 *edid, int len) | |
88 | { | |
89 | struct drm_hdmi_context *ctx = to_context(dev); | |
90 | ||
91 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
92 | ||
93 | if (hdmi_display_ops && hdmi_display_ops->get_edid) | |
94 | return hdmi_display_ops->get_edid(ctx->hdmi_ctx->ctx, | |
95 | connector, edid, len); | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
100 | static int drm_hdmi_check_timing(struct device *dev, void *timing) | |
101 | { | |
102 | struct drm_hdmi_context *ctx = to_context(dev); | |
103 | ||
104 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
105 | ||
106 | if (hdmi_display_ops && hdmi_display_ops->check_timing) | |
107 | return hdmi_display_ops->check_timing(ctx->hdmi_ctx->ctx, | |
108 | timing); | |
109 | ||
110 | return 0; | |
111 | } | |
112 | ||
113 | static int drm_hdmi_power_on(struct device *dev, int mode) | |
114 | { | |
115 | struct drm_hdmi_context *ctx = to_context(dev); | |
116 | ||
117 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
118 | ||
119 | if (hdmi_display_ops && hdmi_display_ops->power_on) | |
120 | return hdmi_display_ops->power_on(ctx->hdmi_ctx->ctx, mode); | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | static struct exynos_drm_display_ops drm_hdmi_display_ops = { | |
126 | .type = EXYNOS_DISPLAY_TYPE_HDMI, | |
127 | .is_connected = drm_hdmi_is_connected, | |
128 | .get_edid = drm_hdmi_get_edid, | |
129 | .check_timing = drm_hdmi_check_timing, | |
130 | .power_on = drm_hdmi_power_on, | |
131 | }; | |
132 | ||
133 | static int drm_hdmi_enable_vblank(struct device *subdrv_dev) | |
134 | { | |
135 | struct drm_hdmi_context *ctx = to_context(subdrv_dev); | |
136 | struct exynos_drm_subdrv *subdrv = &ctx->subdrv; | |
137 | struct exynos_drm_manager *manager = &subdrv->manager; | |
138 | ||
139 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
140 | ||
141 | if (hdmi_overlay_ops && hdmi_overlay_ops->enable_vblank) | |
142 | return hdmi_overlay_ops->enable_vblank(ctx->mixer_ctx->ctx, | |
143 | manager->pipe); | |
144 | ||
145 | return 0; | |
146 | } | |
147 | ||
148 | static void drm_hdmi_disable_vblank(struct device *subdrv_dev) | |
149 | { | |
150 | struct drm_hdmi_context *ctx = to_context(subdrv_dev); | |
151 | ||
152 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
153 | ||
154 | if (hdmi_overlay_ops && hdmi_overlay_ops->disable_vblank) | |
155 | return hdmi_overlay_ops->disable_vblank(ctx->mixer_ctx->ctx); | |
156 | } | |
157 | ||
158 | static void drm_hdmi_mode_set(struct device *subdrv_dev, void *mode) | |
159 | { | |
160 | struct drm_hdmi_context *ctx = to_context(subdrv_dev); | |
161 | ||
162 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
163 | ||
164 | if (hdmi_manager_ops && hdmi_manager_ops->mode_set) | |
165 | hdmi_manager_ops->mode_set(ctx->hdmi_ctx->ctx, mode); | |
166 | } | |
167 | ||
168 | static void drm_hdmi_commit(struct device *subdrv_dev) | |
169 | { | |
170 | struct drm_hdmi_context *ctx = to_context(subdrv_dev); | |
171 | ||
172 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
173 | ||
174 | if (hdmi_manager_ops && hdmi_manager_ops->commit) | |
175 | hdmi_manager_ops->commit(ctx->hdmi_ctx->ctx); | |
176 | } | |
177 | ||
178 | static void drm_hdmi_dpms(struct device *subdrv_dev, int mode) | |
179 | { | |
180 | struct drm_hdmi_context *ctx = to_context(subdrv_dev); | |
181 | ||
182 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
183 | ||
184 | switch (mode) { | |
185 | case DRM_MODE_DPMS_ON: | |
186 | break; | |
187 | case DRM_MODE_DPMS_STANDBY: | |
188 | case DRM_MODE_DPMS_SUSPEND: | |
189 | case DRM_MODE_DPMS_OFF: | |
190 | if (hdmi_manager_ops && hdmi_manager_ops->disable) | |
191 | hdmi_manager_ops->disable(ctx->hdmi_ctx->ctx); | |
192 | break; | |
193 | default: | |
194 | DRM_DEBUG_KMS("unkown dps mode: %d\n", mode); | |
195 | break; | |
196 | } | |
197 | } | |
198 | ||
199 | static struct exynos_drm_manager_ops drm_hdmi_manager_ops = { | |
200 | .dpms = drm_hdmi_dpms, | |
201 | .enable_vblank = drm_hdmi_enable_vblank, | |
202 | .disable_vblank = drm_hdmi_disable_vblank, | |
203 | .mode_set = drm_hdmi_mode_set, | |
204 | .commit = drm_hdmi_commit, | |
205 | }; | |
206 | ||
207 | static void drm_mixer_mode_set(struct device *subdrv_dev, | |
208 | struct exynos_drm_overlay *overlay) | |
209 | { | |
210 | struct drm_hdmi_context *ctx = to_context(subdrv_dev); | |
211 | ||
212 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
213 | ||
214 | if (hdmi_overlay_ops && hdmi_overlay_ops->win_mode_set) | |
215 | hdmi_overlay_ops->win_mode_set(ctx->mixer_ctx->ctx, overlay); | |
216 | } | |
217 | ||
218 | static void drm_mixer_commit(struct device *subdrv_dev, int zpos) | |
219 | { | |
220 | struct drm_hdmi_context *ctx = to_context(subdrv_dev); | |
221 | ||
222 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
223 | ||
224 | if (hdmi_overlay_ops && hdmi_overlay_ops->win_commit) | |
225 | hdmi_overlay_ops->win_commit(ctx->mixer_ctx->ctx, zpos); | |
226 | } | |
227 | ||
228 | static void drm_mixer_disable(struct device *subdrv_dev, int zpos) | |
229 | { | |
230 | struct drm_hdmi_context *ctx = to_context(subdrv_dev); | |
231 | ||
232 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
233 | ||
234 | if (hdmi_overlay_ops && hdmi_overlay_ops->win_disable) | |
235 | hdmi_overlay_ops->win_disable(ctx->mixer_ctx->ctx, zpos); | |
236 | } | |
237 | ||
238 | static struct exynos_drm_overlay_ops drm_hdmi_overlay_ops = { | |
239 | .mode_set = drm_mixer_mode_set, | |
240 | .commit = drm_mixer_commit, | |
241 | .disable = drm_mixer_disable, | |
242 | }; | |
243 | ||
244 | ||
245 | static int hdmi_subdrv_probe(struct drm_device *drm_dev, | |
246 | struct device *dev) | |
247 | { | |
248 | struct exynos_drm_subdrv *subdrv = to_subdrv(dev); | |
249 | struct drm_hdmi_context *ctx; | |
250 | struct platform_device *pdev = to_platform_device(dev); | |
251 | struct exynos_drm_common_hdmi_pd *pd; | |
252 | int ret; | |
253 | ||
254 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
255 | ||
256 | pd = pdev->dev.platform_data; | |
257 | ||
258 | if (!pd) { | |
259 | DRM_DEBUG_KMS("platform data is null.\n"); | |
260 | return -EFAULT; | |
261 | } | |
262 | ||
263 | if (!pd->hdmi_dev) { | |
264 | DRM_DEBUG_KMS("hdmi device is null.\n"); | |
265 | return -EFAULT; | |
266 | } | |
267 | ||
268 | if (!pd->mixer_dev) { | |
269 | DRM_DEBUG_KMS("mixer device is null.\n"); | |
270 | return -EFAULT; | |
271 | } | |
272 | ||
273 | ret = platform_driver_register(&hdmi_driver); | |
274 | if (ret) { | |
275 | DRM_DEBUG_KMS("failed to register hdmi driver.\n"); | |
276 | return ret; | |
277 | } | |
278 | ||
279 | ret = platform_driver_register(&mixer_driver); | |
280 | if (ret) { | |
281 | DRM_DEBUG_KMS("failed to register mixer driver.\n"); | |
282 | goto err_hdmidrv; | |
283 | } | |
284 | ||
285 | ctx = get_ctx_from_subdrv(subdrv); | |
286 | ||
287 | ctx->hdmi_ctx = (struct exynos_drm_hdmi_context *) | |
288 | to_context(pd->hdmi_dev); | |
289 | if (!ctx->hdmi_ctx) { | |
290 | DRM_DEBUG_KMS("hdmi context is null.\n"); | |
291 | ret = -EFAULT; | |
292 | goto err_mixerdrv; | |
293 | } | |
294 | ||
295 | ctx->hdmi_ctx->drm_dev = drm_dev; | |
296 | ||
297 | ctx->mixer_ctx = (struct exynos_drm_hdmi_context *) | |
298 | to_context(pd->mixer_dev); | |
299 | if (!ctx->mixer_ctx) { | |
300 | DRM_DEBUG_KMS("mixer context is null.\n"); | |
301 | ret = -EFAULT; | |
302 | goto err_mixerdrv; | |
303 | } | |
304 | ||
305 | ctx->mixer_ctx->drm_dev = drm_dev; | |
306 | ||
307 | return 0; | |
308 | ||
309 | err_mixerdrv: | |
310 | platform_driver_unregister(&mixer_driver); | |
311 | err_hdmidrv: | |
312 | platform_driver_unregister(&hdmi_driver); | |
313 | return ret; | |
314 | } | |
315 | ||
316 | static void hdmi_subdrv_remove(struct drm_device *drm_dev) | |
317 | { | |
318 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
319 | ||
320 | platform_driver_unregister(&hdmi_driver); | |
321 | platform_driver_unregister(&mixer_driver); | |
322 | } | |
323 | ||
324 | static void exynos_drm_hdmi_late_probe(struct work_struct *work) | |
325 | { | |
326 | struct drm_hdmi_context *ctx = container_of(work, | |
327 | struct drm_hdmi_context, work); | |
328 | ||
329 | /* | |
330 | * this function calls subdrv->probe() so this must be called | |
331 | * after probe context. | |
332 | * | |
333 | * PS. subdrv->probe() will call platform_driver_register() to probe | |
334 | * hdmi and mixer driver. | |
335 | */ | |
336 | exynos_drm_subdrv_register(&ctx->subdrv); | |
337 | } | |
338 | ||
339 | static int __devinit exynos_drm_hdmi_probe(struct platform_device *pdev) | |
340 | { | |
341 | struct device *dev = &pdev->dev; | |
342 | struct exynos_drm_subdrv *subdrv; | |
343 | struct drm_hdmi_context *ctx; | |
344 | ||
345 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
346 | ||
347 | ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); | |
348 | if (!ctx) { | |
349 | DRM_LOG_KMS("failed to alloc common hdmi context.\n"); | |
350 | return -ENOMEM; | |
351 | } | |
352 | ||
353 | subdrv = &ctx->subdrv; | |
354 | ||
355 | subdrv->probe = hdmi_subdrv_probe; | |
356 | subdrv->remove = hdmi_subdrv_remove; | |
357 | subdrv->manager.pipe = -1; | |
358 | subdrv->manager.ops = &drm_hdmi_manager_ops; | |
359 | subdrv->manager.overlay_ops = &drm_hdmi_overlay_ops; | |
360 | subdrv->manager.display_ops = &drm_hdmi_display_ops; | |
361 | subdrv->manager.dev = dev; | |
362 | ||
363 | platform_set_drvdata(pdev, subdrv); | |
364 | ||
365 | INIT_WORK(&ctx->work, exynos_drm_hdmi_late_probe); | |
366 | ||
367 | schedule_work(&ctx->work); | |
368 | ||
369 | return 0; | |
370 | } | |
371 | ||
372 | static int hdmi_runtime_suspend(struct device *dev) | |
373 | { | |
374 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
375 | ||
376 | return 0; | |
377 | } | |
378 | ||
379 | static int hdmi_runtime_resume(struct device *dev) | |
380 | { | |
381 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | static const struct dev_pm_ops hdmi_pm_ops = { | |
387 | .runtime_suspend = hdmi_runtime_suspend, | |
388 | .runtime_resume = hdmi_runtime_resume, | |
389 | }; | |
390 | ||
391 | static int __devexit exynos_drm_hdmi_remove(struct platform_device *pdev) | |
392 | { | |
393 | struct drm_hdmi_context *ctx = platform_get_drvdata(pdev); | |
394 | ||
395 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
396 | ||
397 | exynos_drm_subdrv_unregister(&ctx->subdrv); | |
398 | kfree(ctx); | |
399 | ||
400 | return 0; | |
401 | } | |
402 | ||
403 | static struct platform_driver exynos_drm_common_hdmi_driver = { | |
404 | .probe = exynos_drm_hdmi_probe, | |
405 | .remove = __devexit_p(exynos_drm_hdmi_remove), | |
406 | .driver = { | |
407 | .name = "exynos-drm-hdmi", | |
408 | .owner = THIS_MODULE, | |
409 | .pm = &hdmi_pm_ops, | |
410 | }, | |
411 | }; | |
412 | ||
413 | static int __init exynos_drm_hdmi_init(void) | |
414 | { | |
415 | int ret; | |
416 | ||
417 | DRM_DEBUG_KMS("%s\n", __FILE__); | |
418 | ||
419 | ret = platform_driver_register(&exynos_drm_common_hdmi_driver); | |
420 | if (ret) { | |
421 | DRM_DEBUG_KMS("failed to register hdmi common driver.\n"); | |
422 | return ret; | |
423 | } | |
424 | ||
425 | return ret; | |
426 | } | |
427 | ||
428 | static void __exit exynos_drm_hdmi_exit(void) | |
429 | { | |
430 | platform_driver_unregister(&exynos_drm_common_hdmi_driver); | |
431 | } | |
432 | ||
433 | module_init(exynos_drm_hdmi_init); | |
434 | module_exit(exynos_drm_hdmi_exit); | |
435 | ||
436 | MODULE_AUTHOR("Inki Dae <inki.dae@samsung.com>"); | |
437 | MODULE_AUTHOR("Seung-Woo Kim, <sw0312.kim@samsung.com>"); | |
438 | MODULE_DESCRIPTION("Samsung SoC DRM HDMI Driver"); | |
439 | MODULE_LICENSE("GPL"); |