Commit | Line | Data |
---|---|---|
96f60e37 RK |
1 | /* |
2 | * Copyright (C) 2012 Russell King | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | #include <linux/clk.h> | |
0101fd00 | 9 | #include <linux/component.h> |
96f60e37 | 10 | #include <linux/module.h> |
0101fd00 | 11 | #include <linux/of_graph.h> |
96f60e37 RK |
12 | #include <drm/drmP.h> |
13 | #include <drm/drm_crtc_helper.h> | |
14 | #include "armada_crtc.h" | |
15 | #include "armada_drm.h" | |
16 | #include "armada_gem.h" | |
17 | #include "armada_hw.h" | |
18 | #include <drm/armada_drm.h> | |
19 | #include "armada_ioctlP.h" | |
20 | ||
585b691e RK |
21 | #ifdef CONFIG_DRM_ARMADA_TDA1998X |
22 | #include <drm/i2c/tda998x.h> | |
23 | #include "armada_slave.h" | |
24 | ||
25 | static struct tda998x_encoder_params params = { | |
26 | /* With 0x24, there is no translation between vp_out and int_vp | |
27 | FB LCD out Pins VIP Int Vp | |
28 | R:23:16 R:7:0 VPC7:0 7:0 7:0[R] | |
29 | G:15:8 G:15:8 VPB7:0 23:16 23:16[G] | |
30 | B:7:0 B:23:16 VPA7:0 15:8 15:8[B] | |
31 | */ | |
32 | .swap_a = 2, | |
33 | .swap_b = 3, | |
34 | .swap_c = 4, | |
35 | .swap_d = 5, | |
36 | .swap_e = 0, | |
37 | .swap_f = 1, | |
38 | .audio_cfg = BIT(2), | |
39 | .audio_frame[1] = 1, | |
40 | .audio_format = AFMT_SPDIF, | |
41 | .audio_sample_rate = 44100, | |
42 | }; | |
43 | ||
44 | static const struct armada_drm_slave_config tda19988_config = { | |
45 | .i2c_adapter_id = 0, | |
46 | .crtcs = 1 << 0, /* Only LCD0 at the moment */ | |
47 | .polled = DRM_CONNECTOR_POLL_CONNECT | DRM_CONNECTOR_POLL_DISCONNECT, | |
48 | .interlace_allowed = true, | |
49 | .info = { | |
50 | .type = "tda998x", | |
51 | .addr = 0x70, | |
52 | .platform_data = ¶ms, | |
53 | }, | |
54 | }; | |
55 | #endif | |
56 | ||
0101fd00 RK |
57 | static bool is_componentized(struct device *dev) |
58 | { | |
59 | return dev->of_node || dev->platform_data; | |
60 | } | |
61 | ||
96f60e37 RK |
62 | static void armada_drm_unref_work(struct work_struct *work) |
63 | { | |
64 | struct armada_private *priv = | |
65 | container_of(work, struct armada_private, fb_unref_work); | |
66 | struct drm_framebuffer *fb; | |
67 | ||
68 | while (kfifo_get(&priv->fb_unref, &fb)) | |
69 | drm_framebuffer_unreference(fb); | |
70 | } | |
71 | ||
72 | /* Must be called with dev->event_lock held */ | |
73 | void __armada_drm_queue_unref_work(struct drm_device *dev, | |
74 | struct drm_framebuffer *fb) | |
75 | { | |
76 | struct armada_private *priv = dev->dev_private; | |
77 | ||
d13c46c6 | 78 | WARN_ON(!kfifo_put(&priv->fb_unref, fb)); |
96f60e37 RK |
79 | schedule_work(&priv->fb_unref_work); |
80 | } | |
81 | ||
82 | void armada_drm_queue_unref_work(struct drm_device *dev, | |
83 | struct drm_framebuffer *fb) | |
84 | { | |
85 | unsigned long flags; | |
86 | ||
87 | spin_lock_irqsave(&dev->event_lock, flags); | |
88 | __armada_drm_queue_unref_work(dev, fb); | |
89 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
90 | } | |
91 | ||
92 | static int armada_drm_load(struct drm_device *dev, unsigned long flags) | |
93 | { | |
94 | const struct platform_device_id *id; | |
42e62ba7 | 95 | const struct armada_variant *variant; |
96f60e37 RK |
96 | struct armada_private *priv; |
97 | struct resource *res[ARRAY_SIZE(priv->dcrtc)]; | |
98 | struct resource *mem = NULL; | |
99 | int ret, n, i; | |
100 | ||
101 | memset(res, 0, sizeof(res)); | |
102 | ||
103 | for (n = i = 0; ; n++) { | |
104 | struct resource *r = platform_get_resource(dev->platformdev, | |
105 | IORESOURCE_MEM, n); | |
106 | if (!r) | |
107 | break; | |
108 | ||
109 | /* Resources above 64K are graphics memory */ | |
110 | if (resource_size(r) > SZ_64K) | |
111 | mem = r; | |
112 | else if (i < ARRAY_SIZE(priv->dcrtc)) | |
113 | res[i++] = r; | |
114 | else | |
115 | return -EINVAL; | |
116 | } | |
117 | ||
d8c96083 | 118 | if (!mem) |
96f60e37 RK |
119 | return -ENXIO; |
120 | ||
121 | if (!devm_request_mem_region(dev->dev, mem->start, | |
122 | resource_size(mem), "armada-drm")) | |
123 | return -EBUSY; | |
124 | ||
125 | priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL); | |
126 | if (!priv) { | |
127 | DRM_ERROR("failed to allocate private\n"); | |
128 | return -ENOMEM; | |
129 | } | |
130 | ||
50fb3c3b | 131 | platform_set_drvdata(dev->platformdev, dev); |
96f60e37 RK |
132 | dev->dev_private = priv; |
133 | ||
134 | /* Get the implementation specific driver data. */ | |
135 | id = platform_get_device_id(dev->platformdev); | |
136 | if (!id) | |
137 | return -ENXIO; | |
138 | ||
42e62ba7 | 139 | variant = (const struct armada_variant *)id->driver_data; |
96f60e37 | 140 | |
96f60e37 RK |
141 | INIT_WORK(&priv->fb_unref_work, armada_drm_unref_work); |
142 | INIT_KFIFO(priv->fb_unref); | |
143 | ||
144 | /* Mode setting support */ | |
145 | drm_mode_config_init(dev); | |
146 | dev->mode_config.min_width = 320; | |
147 | dev->mode_config.min_height = 200; | |
148 | ||
149 | /* | |
150 | * With vscale enabled, the maximum width is 1920 due to the | |
151 | * 1920 by 3 lines RAM | |
152 | */ | |
153 | dev->mode_config.max_width = 1920; | |
154 | dev->mode_config.max_height = 2048; | |
155 | ||
156 | dev->mode_config.preferred_depth = 24; | |
157 | dev->mode_config.funcs = &armada_drm_mode_config_funcs; | |
158 | drm_mm_init(&priv->linear, mem->start, resource_size(mem)); | |
159 | ||
160 | /* Create all LCD controllers */ | |
161 | for (n = 0; n < ARRAY_SIZE(priv->dcrtc); n++) { | |
e5d9ddfb RK |
162 | int irq; |
163 | ||
96f60e37 RK |
164 | if (!res[n]) |
165 | break; | |
166 | ||
e5d9ddfb RK |
167 | irq = platform_get_irq(dev->platformdev, n); |
168 | if (irq < 0) | |
169 | goto err_kms; | |
170 | ||
d8c96083 RK |
171 | ret = armada_drm_crtc_create(dev, dev->dev, res[n], irq, |
172 | variant); | |
96f60e37 RK |
173 | if (ret) |
174 | goto err_kms; | |
175 | } | |
176 | ||
0101fd00 RK |
177 | if (is_componentized(dev->dev)) { |
178 | ret = component_bind_all(dev->dev, dev); | |
179 | if (ret) | |
180 | goto err_kms; | |
181 | } else { | |
585b691e | 182 | #ifdef CONFIG_DRM_ARMADA_TDA1998X |
0101fd00 RK |
183 | ret = armada_drm_connector_slave_create(dev, &tda19988_config); |
184 | if (ret) | |
185 | goto err_kms; | |
585b691e | 186 | #endif |
0101fd00 | 187 | } |
585b691e | 188 | |
d0165407 | 189 | ret = drm_vblank_init(dev, dev->mode_config.num_crtc); |
96f60e37 | 190 | if (ret) |
0101fd00 | 191 | goto err_comp; |
96f60e37 | 192 | |
96f60e37 RK |
193 | dev->vblank_disable_allowed = 1; |
194 | ||
195 | ret = armada_fbdev_init(dev); | |
196 | if (ret) | |
0101fd00 | 197 | goto err_comp; |
96f60e37 RK |
198 | |
199 | drm_kms_helper_poll_init(dev); | |
200 | ||
201 | return 0; | |
202 | ||
0101fd00 RK |
203 | err_comp: |
204 | if (is_componentized(dev->dev)) | |
205 | component_unbind_all(dev->dev, dev); | |
96f60e37 RK |
206 | err_kms: |
207 | drm_mode_config_cleanup(dev); | |
208 | drm_mm_takedown(&priv->linear); | |
209 | flush_work(&priv->fb_unref_work); | |
210 | ||
211 | return ret; | |
212 | } | |
213 | ||
214 | static int armada_drm_unload(struct drm_device *dev) | |
215 | { | |
216 | struct armada_private *priv = dev->dev_private; | |
217 | ||
218 | drm_kms_helper_poll_fini(dev); | |
219 | armada_fbdev_fini(dev); | |
0101fd00 RK |
220 | |
221 | if (is_componentized(dev->dev)) | |
222 | component_unbind_all(dev->dev, dev); | |
223 | ||
96f60e37 RK |
224 | drm_mode_config_cleanup(dev); |
225 | drm_mm_takedown(&priv->linear); | |
226 | flush_work(&priv->fb_unref_work); | |
227 | dev->dev_private = NULL; | |
228 | ||
229 | return 0; | |
230 | } | |
231 | ||
232 | void armada_drm_vbl_event_add(struct armada_crtc *dcrtc, | |
233 | struct armada_vbl_event *evt) | |
234 | { | |
235 | unsigned long flags; | |
236 | ||
237 | spin_lock_irqsave(&dcrtc->irq_lock, flags); | |
238 | if (list_empty(&evt->node)) { | |
239 | list_add_tail(&evt->node, &dcrtc->vbl_list); | |
240 | ||
241 | drm_vblank_get(dcrtc->crtc.dev, dcrtc->num); | |
242 | } | |
243 | spin_unlock_irqrestore(&dcrtc->irq_lock, flags); | |
244 | } | |
245 | ||
246 | void armada_drm_vbl_event_remove(struct armada_crtc *dcrtc, | |
247 | struct armada_vbl_event *evt) | |
248 | { | |
249 | if (!list_empty(&evt->node)) { | |
250 | list_del_init(&evt->node); | |
251 | drm_vblank_put(dcrtc->crtc.dev, dcrtc->num); | |
252 | } | |
253 | } | |
254 | ||
255 | void armada_drm_vbl_event_remove_unlocked(struct armada_crtc *dcrtc, | |
256 | struct armada_vbl_event *evt) | |
257 | { | |
258 | unsigned long flags; | |
259 | ||
260 | spin_lock_irqsave(&dcrtc->irq_lock, flags); | |
261 | armada_drm_vbl_event_remove(dcrtc, evt); | |
262 | spin_unlock_irqrestore(&dcrtc->irq_lock, flags); | |
263 | } | |
264 | ||
265 | /* These are called under the vbl_lock. */ | |
266 | static int armada_drm_enable_vblank(struct drm_device *dev, int crtc) | |
267 | { | |
268 | struct armada_private *priv = dev->dev_private; | |
269 | armada_drm_crtc_enable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA); | |
270 | return 0; | |
271 | } | |
272 | ||
273 | static void armada_drm_disable_vblank(struct drm_device *dev, int crtc) | |
274 | { | |
275 | struct armada_private *priv = dev->dev_private; | |
276 | armada_drm_crtc_disable_irq(priv->dcrtc[crtc], VSYNC_IRQ_ENA); | |
277 | } | |
278 | ||
96f60e37 RK |
279 | static struct drm_ioctl_desc armada_ioctls[] = { |
280 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl, | |
281 | DRM_UNLOCKED), | |
282 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, | |
283 | DRM_UNLOCKED), | |
284 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, | |
285 | DRM_UNLOCKED), | |
286 | }; | |
287 | ||
2f5ae490 RK |
288 | static void armada_drm_lastclose(struct drm_device *dev) |
289 | { | |
290 | armada_fbdev_lastclose(dev); | |
291 | } | |
292 | ||
96f60e37 RK |
293 | static const struct file_operations armada_drm_fops = { |
294 | .owner = THIS_MODULE, | |
295 | .llseek = no_llseek, | |
296 | .read = drm_read, | |
297 | .poll = drm_poll, | |
298 | .unlocked_ioctl = drm_ioctl, | |
299 | .mmap = drm_gem_mmap, | |
300 | .open = drm_open, | |
301 | .release = drm_release, | |
302 | }; | |
303 | ||
304 | static struct drm_driver armada_drm_driver = { | |
305 | .load = armada_drm_load, | |
306 | .open = NULL, | |
307 | .preclose = NULL, | |
308 | .postclose = NULL, | |
2f5ae490 | 309 | .lastclose = armada_drm_lastclose, |
96f60e37 RK |
310 | .unload = armada_drm_unload, |
311 | .get_vblank_counter = drm_vblank_count, | |
312 | .enable_vblank = armada_drm_enable_vblank, | |
313 | .disable_vblank = armada_drm_disable_vblank, | |
96f60e37 RK |
314 | #ifdef CONFIG_DEBUG_FS |
315 | .debugfs_init = armada_drm_debugfs_init, | |
316 | .debugfs_cleanup = armada_drm_debugfs_cleanup, | |
317 | #endif | |
96f60e37 RK |
318 | .gem_free_object = armada_gem_free_object, |
319 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, | |
320 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
321 | .gem_prime_export = armada_gem_prime_export, | |
322 | .gem_prime_import = armada_gem_prime_import, | |
323 | .dumb_create = armada_gem_dumb_create, | |
324 | .dumb_map_offset = armada_gem_dumb_map_offset, | |
325 | .dumb_destroy = armada_gem_dumb_destroy, | |
326 | .gem_vm_ops = &armada_gem_vm_ops, | |
327 | .major = 1, | |
328 | .minor = 0, | |
329 | .name = "armada-drm", | |
330 | .desc = "Armada SoC DRM", | |
331 | .date = "20120730", | |
332 | .driver_features = DRIVER_GEM | DRIVER_MODESET | | |
e5d9ddfb | 333 | DRIVER_PRIME, |
96f60e37 RK |
334 | .ioctls = armada_ioctls, |
335 | .fops = &armada_drm_fops, | |
336 | }; | |
337 | ||
0101fd00 RK |
338 | static int armada_drm_bind(struct device *dev) |
339 | { | |
340 | return drm_platform_init(&armada_drm_driver, to_platform_device(dev)); | |
341 | } | |
342 | ||
343 | static void armada_drm_unbind(struct device *dev) | |
344 | { | |
345 | drm_put_dev(dev_get_drvdata(dev)); | |
346 | } | |
347 | ||
348 | static int compare_of(struct device *dev, void *data) | |
349 | { | |
350 | return dev->of_node == data; | |
351 | } | |
352 | ||
353 | static int compare_dev_name(struct device *dev, void *data) | |
354 | { | |
355 | const char *name = data; | |
356 | return !strcmp(dev_name(dev), name); | |
357 | } | |
358 | ||
359 | static void armada_add_endpoints(struct device *dev, | |
360 | struct component_match **match, struct device_node *port) | |
361 | { | |
362 | struct device_node *ep, *remote; | |
363 | ||
364 | for_each_child_of_node(port, ep) { | |
365 | remote = of_graph_get_remote_port_parent(ep); | |
366 | if (!remote || !of_device_is_available(remote)) { | |
367 | of_node_put(remote); | |
368 | continue; | |
369 | } else if (!of_device_is_available(remote->parent)) { | |
370 | dev_warn(dev, "parent device of %s is not available\n", | |
371 | remote->full_name); | |
372 | of_node_put(remote); | |
373 | continue; | |
374 | } | |
375 | ||
376 | component_match_add(dev, match, compare_of, remote); | |
377 | of_node_put(remote); | |
378 | } | |
379 | } | |
380 | ||
381 | static int armada_drm_find_components(struct device *dev, | |
382 | struct component_match **match) | |
383 | { | |
384 | struct device_node *port; | |
385 | int i; | |
386 | ||
387 | if (dev->of_node) { | |
388 | struct device_node *np = dev->of_node; | |
389 | ||
390 | for (i = 0; ; i++) { | |
391 | port = of_parse_phandle(np, "ports", i); | |
392 | if (!port) | |
393 | break; | |
394 | ||
395 | component_match_add(dev, match, compare_of, port); | |
396 | of_node_put(port); | |
397 | } | |
398 | ||
399 | if (i == 0) { | |
400 | dev_err(dev, "missing 'ports' property\n"); | |
401 | return -ENODEV; | |
402 | } | |
403 | ||
404 | for (i = 0; ; i++) { | |
405 | port = of_parse_phandle(np, "ports", i); | |
406 | if (!port) | |
407 | break; | |
408 | ||
409 | armada_add_endpoints(dev, match, port); | |
410 | of_node_put(port); | |
411 | } | |
412 | } else if (dev->platform_data) { | |
413 | char **devices = dev->platform_data; | |
414 | struct device *d; | |
415 | ||
416 | for (i = 0; devices[i]; i++) | |
417 | component_match_add(dev, match, compare_dev_name, | |
418 | devices[i]); | |
419 | ||
420 | if (i == 0) { | |
421 | dev_err(dev, "missing 'ports' property\n"); | |
422 | return -ENODEV; | |
423 | } | |
424 | ||
425 | for (i = 0; devices[i]; i++) { | |
426 | d = bus_find_device_by_name(&platform_bus_type, NULL, | |
427 | devices[i]); | |
428 | if (d && d->of_node) { | |
429 | for_each_child_of_node(d->of_node, port) | |
430 | armada_add_endpoints(dev, match, port); | |
431 | } | |
432 | put_device(d); | |
433 | } | |
434 | } | |
435 | ||
436 | return 0; | |
437 | } | |
438 | ||
439 | static const struct component_master_ops armada_master_ops = { | |
440 | .bind = armada_drm_bind, | |
441 | .unbind = armada_drm_unbind, | |
442 | }; | |
443 | ||
96f60e37 RK |
444 | static int armada_drm_probe(struct platform_device *pdev) |
445 | { | |
0101fd00 RK |
446 | if (is_componentized(&pdev->dev)) { |
447 | struct component_match *match = NULL; | |
448 | int ret; | |
449 | ||
450 | ret = armada_drm_find_components(&pdev->dev, &match); | |
451 | if (ret < 0) | |
452 | return ret; | |
453 | ||
454 | return component_master_add_with_match(&pdev->dev, | |
455 | &armada_master_ops, match); | |
456 | } else { | |
457 | return drm_platform_init(&armada_drm_driver, pdev); | |
458 | } | |
96f60e37 RK |
459 | } |
460 | ||
461 | static int armada_drm_remove(struct platform_device *pdev) | |
462 | { | |
0101fd00 RK |
463 | if (is_componentized(&pdev->dev)) |
464 | component_master_del(&pdev->dev, &armada_master_ops); | |
465 | else | |
466 | drm_put_dev(platform_get_drvdata(pdev)); | |
96f60e37 RK |
467 | return 0; |
468 | } | |
469 | ||
470 | static const struct platform_device_id armada_drm_platform_ids[] = { | |
471 | { | |
472 | .name = "armada-drm", | |
473 | .driver_data = (unsigned long)&armada510_ops, | |
474 | }, { | |
475 | .name = "armada-510-drm", | |
476 | .driver_data = (unsigned long)&armada510_ops, | |
477 | }, | |
478 | { }, | |
479 | }; | |
480 | MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids); | |
481 | ||
482 | static struct platform_driver armada_drm_platform_driver = { | |
483 | .probe = armada_drm_probe, | |
484 | .remove = armada_drm_remove, | |
485 | .driver = { | |
486 | .name = "armada-drm", | |
487 | .owner = THIS_MODULE, | |
488 | }, | |
489 | .id_table = armada_drm_platform_ids, | |
490 | }; | |
491 | ||
492 | static int __init armada_drm_init(void) | |
493 | { | |
d8c96083 RK |
494 | int ret; |
495 | ||
f95aeb17 | 496 | armada_drm_driver.num_ioctls = ARRAY_SIZE(armada_ioctls); |
d8c96083 RK |
497 | |
498 | ret = platform_driver_register(&armada_lcd_platform_driver); | |
499 | if (ret) | |
500 | return ret; | |
501 | ret = platform_driver_register(&armada_drm_platform_driver); | |
502 | if (ret) | |
503 | platform_driver_unregister(&armada_lcd_platform_driver); | |
504 | return ret; | |
96f60e37 RK |
505 | } |
506 | module_init(armada_drm_init); | |
507 | ||
508 | static void __exit armada_drm_exit(void) | |
509 | { | |
510 | platform_driver_unregister(&armada_drm_platform_driver); | |
d8c96083 | 511 | platform_driver_unregister(&armada_lcd_platform_driver); |
96f60e37 RK |
512 | } |
513 | module_exit(armada_drm_exit); | |
514 | ||
515 | MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>"); | |
516 | MODULE_DESCRIPTION("Armada DRM Driver"); | |
517 | MODULE_LICENSE("GPL"); | |
518 | MODULE_ALIAS("platform:armada-drm"); |