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 | 171 | ret = armada_drm_crtc_create(dev, dev->dev, res[n], irq, |
9611cb93 | 172 | variant, NULL); |
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 | |
0544e38d | 193 | dev->irq_enabled = true; |
96f60e37 RK |
194 | dev->vblank_disable_allowed = 1; |
195 | ||
196 | ret = armada_fbdev_init(dev); | |
197 | if (ret) | |
0101fd00 | 198 | goto err_comp; |
96f60e37 RK |
199 | |
200 | drm_kms_helper_poll_init(dev); | |
201 | ||
202 | return 0; | |
203 | ||
0101fd00 RK |
204 | err_comp: |
205 | if (is_componentized(dev->dev)) | |
206 | component_unbind_all(dev->dev, dev); | |
96f60e37 RK |
207 | err_kms: |
208 | drm_mode_config_cleanup(dev); | |
209 | drm_mm_takedown(&priv->linear); | |
210 | flush_work(&priv->fb_unref_work); | |
211 | ||
212 | return ret; | |
213 | } | |
214 | ||
215 | static int armada_drm_unload(struct drm_device *dev) | |
216 | { | |
217 | struct armada_private *priv = dev->dev_private; | |
218 | ||
219 | drm_kms_helper_poll_fini(dev); | |
220 | armada_fbdev_fini(dev); | |
0101fd00 RK |
221 | |
222 | if (is_componentized(dev->dev)) | |
223 | component_unbind_all(dev->dev, dev); | |
224 | ||
96f60e37 RK |
225 | drm_mode_config_cleanup(dev); |
226 | drm_mm_takedown(&priv->linear); | |
227 | flush_work(&priv->fb_unref_work); | |
228 | dev->dev_private = NULL; | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | void armada_drm_vbl_event_add(struct armada_crtc *dcrtc, | |
234 | struct armada_vbl_event *evt) | |
235 | { | |
236 | unsigned long flags; | |
237 | ||
238 | spin_lock_irqsave(&dcrtc->irq_lock, flags); | |
239 | if (list_empty(&evt->node)) { | |
240 | list_add_tail(&evt->node, &dcrtc->vbl_list); | |
241 | ||
242 | drm_vblank_get(dcrtc->crtc.dev, dcrtc->num); | |
243 | } | |
244 | spin_unlock_irqrestore(&dcrtc->irq_lock, flags); | |
245 | } | |
246 | ||
247 | void armada_drm_vbl_event_remove(struct armada_crtc *dcrtc, | |
248 | struct armada_vbl_event *evt) | |
249 | { | |
250 | if (!list_empty(&evt->node)) { | |
251 | list_del_init(&evt->node); | |
252 | drm_vblank_put(dcrtc->crtc.dev, dcrtc->num); | |
253 | } | |
254 | } | |
255 | ||
96f60e37 | 256 | /* These are called under the vbl_lock. */ |
88e72717 | 257 | static int armada_drm_enable_vblank(struct drm_device *dev, unsigned int pipe) |
96f60e37 RK |
258 | { |
259 | struct armada_private *priv = dev->dev_private; | |
88e72717 | 260 | armada_drm_crtc_enable_irq(priv->dcrtc[pipe], VSYNC_IRQ_ENA); |
96f60e37 RK |
261 | return 0; |
262 | } | |
263 | ||
88e72717 | 264 | static void armada_drm_disable_vblank(struct drm_device *dev, unsigned int pipe) |
96f60e37 RK |
265 | { |
266 | struct armada_private *priv = dev->dev_private; | |
88e72717 | 267 | armada_drm_crtc_disable_irq(priv->dcrtc[pipe], VSYNC_IRQ_ENA); |
96f60e37 RK |
268 | } |
269 | ||
96f60e37 RK |
270 | static struct drm_ioctl_desc armada_ioctls[] = { |
271 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl, | |
272 | DRM_UNLOCKED), | |
273 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, | |
274 | DRM_UNLOCKED), | |
275 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, | |
276 | DRM_UNLOCKED), | |
277 | }; | |
278 | ||
2f5ae490 RK |
279 | static void armada_drm_lastclose(struct drm_device *dev) |
280 | { | |
281 | armada_fbdev_lastclose(dev); | |
282 | } | |
283 | ||
96f60e37 RK |
284 | static const struct file_operations armada_drm_fops = { |
285 | .owner = THIS_MODULE, | |
286 | .llseek = no_llseek, | |
287 | .read = drm_read, | |
288 | .poll = drm_poll, | |
289 | .unlocked_ioctl = drm_ioctl, | |
290 | .mmap = drm_gem_mmap, | |
291 | .open = drm_open, | |
292 | .release = drm_release, | |
293 | }; | |
294 | ||
295 | static struct drm_driver armada_drm_driver = { | |
296 | .load = armada_drm_load, | |
297 | .open = NULL, | |
298 | .preclose = NULL, | |
299 | .postclose = NULL, | |
2f5ae490 | 300 | .lastclose = armada_drm_lastclose, |
96f60e37 | 301 | .unload = armada_drm_unload, |
915b4d11 | 302 | .set_busid = drm_platform_set_busid, |
96f60e37 RK |
303 | .get_vblank_counter = drm_vblank_count, |
304 | .enable_vblank = armada_drm_enable_vblank, | |
305 | .disable_vblank = armada_drm_disable_vblank, | |
96f60e37 RK |
306 | #ifdef CONFIG_DEBUG_FS |
307 | .debugfs_init = armada_drm_debugfs_init, | |
308 | .debugfs_cleanup = armada_drm_debugfs_cleanup, | |
309 | #endif | |
96f60e37 RK |
310 | .gem_free_object = armada_gem_free_object, |
311 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, | |
312 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
313 | .gem_prime_export = armada_gem_prime_export, | |
314 | .gem_prime_import = armada_gem_prime_import, | |
315 | .dumb_create = armada_gem_dumb_create, | |
316 | .dumb_map_offset = armada_gem_dumb_map_offset, | |
317 | .dumb_destroy = armada_gem_dumb_destroy, | |
318 | .gem_vm_ops = &armada_gem_vm_ops, | |
319 | .major = 1, | |
320 | .minor = 0, | |
321 | .name = "armada-drm", | |
322 | .desc = "Armada SoC DRM", | |
323 | .date = "20120730", | |
324 | .driver_features = DRIVER_GEM | DRIVER_MODESET | | |
0544e38d | 325 | DRIVER_HAVE_IRQ | DRIVER_PRIME, |
96f60e37 RK |
326 | .ioctls = armada_ioctls, |
327 | .fops = &armada_drm_fops, | |
328 | }; | |
329 | ||
0101fd00 RK |
330 | static int armada_drm_bind(struct device *dev) |
331 | { | |
332 | return drm_platform_init(&armada_drm_driver, to_platform_device(dev)); | |
333 | } | |
334 | ||
335 | static void armada_drm_unbind(struct device *dev) | |
336 | { | |
337 | drm_put_dev(dev_get_drvdata(dev)); | |
338 | } | |
339 | ||
340 | static int compare_of(struct device *dev, void *data) | |
341 | { | |
342 | return dev->of_node == data; | |
343 | } | |
344 | ||
345 | static int compare_dev_name(struct device *dev, void *data) | |
346 | { | |
347 | const char *name = data; | |
348 | return !strcmp(dev_name(dev), name); | |
349 | } | |
350 | ||
351 | static void armada_add_endpoints(struct device *dev, | |
352 | struct component_match **match, struct device_node *port) | |
353 | { | |
354 | struct device_node *ep, *remote; | |
355 | ||
356 | for_each_child_of_node(port, ep) { | |
357 | remote = of_graph_get_remote_port_parent(ep); | |
358 | if (!remote || !of_device_is_available(remote)) { | |
359 | of_node_put(remote); | |
360 | continue; | |
361 | } else if (!of_device_is_available(remote->parent)) { | |
362 | dev_warn(dev, "parent device of %s is not available\n", | |
363 | remote->full_name); | |
364 | of_node_put(remote); | |
365 | continue; | |
366 | } | |
367 | ||
368 | component_match_add(dev, match, compare_of, remote); | |
369 | of_node_put(remote); | |
370 | } | |
371 | } | |
372 | ||
373 | static int armada_drm_find_components(struct device *dev, | |
374 | struct component_match **match) | |
375 | { | |
376 | struct device_node *port; | |
377 | int i; | |
378 | ||
379 | if (dev->of_node) { | |
380 | struct device_node *np = dev->of_node; | |
381 | ||
382 | for (i = 0; ; i++) { | |
383 | port = of_parse_phandle(np, "ports", i); | |
384 | if (!port) | |
385 | break; | |
386 | ||
387 | component_match_add(dev, match, compare_of, port); | |
388 | of_node_put(port); | |
389 | } | |
390 | ||
391 | if (i == 0) { | |
392 | dev_err(dev, "missing 'ports' property\n"); | |
393 | return -ENODEV; | |
394 | } | |
395 | ||
396 | for (i = 0; ; i++) { | |
397 | port = of_parse_phandle(np, "ports", i); | |
398 | if (!port) | |
399 | break; | |
400 | ||
401 | armada_add_endpoints(dev, match, port); | |
402 | of_node_put(port); | |
403 | } | |
404 | } else if (dev->platform_data) { | |
405 | char **devices = dev->platform_data; | |
406 | struct device *d; | |
407 | ||
408 | for (i = 0; devices[i]; i++) | |
409 | component_match_add(dev, match, compare_dev_name, | |
410 | devices[i]); | |
411 | ||
412 | if (i == 0) { | |
413 | dev_err(dev, "missing 'ports' property\n"); | |
414 | return -ENODEV; | |
415 | } | |
416 | ||
417 | for (i = 0; devices[i]; i++) { | |
418 | d = bus_find_device_by_name(&platform_bus_type, NULL, | |
419 | devices[i]); | |
420 | if (d && d->of_node) { | |
421 | for_each_child_of_node(d->of_node, port) | |
422 | armada_add_endpoints(dev, match, port); | |
423 | } | |
424 | put_device(d); | |
425 | } | |
426 | } | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
431 | static const struct component_master_ops armada_master_ops = { | |
432 | .bind = armada_drm_bind, | |
433 | .unbind = armada_drm_unbind, | |
434 | }; | |
435 | ||
96f60e37 RK |
436 | static int armada_drm_probe(struct platform_device *pdev) |
437 | { | |
0101fd00 RK |
438 | if (is_componentized(&pdev->dev)) { |
439 | struct component_match *match = NULL; | |
440 | int ret; | |
441 | ||
442 | ret = armada_drm_find_components(&pdev->dev, &match); | |
443 | if (ret < 0) | |
444 | return ret; | |
445 | ||
446 | return component_master_add_with_match(&pdev->dev, | |
447 | &armada_master_ops, match); | |
448 | } else { | |
449 | return drm_platform_init(&armada_drm_driver, pdev); | |
450 | } | |
96f60e37 RK |
451 | } |
452 | ||
453 | static int armada_drm_remove(struct platform_device *pdev) | |
454 | { | |
0101fd00 RK |
455 | if (is_componentized(&pdev->dev)) |
456 | component_master_del(&pdev->dev, &armada_master_ops); | |
457 | else | |
458 | drm_put_dev(platform_get_drvdata(pdev)); | |
96f60e37 RK |
459 | return 0; |
460 | } | |
461 | ||
462 | static const struct platform_device_id armada_drm_platform_ids[] = { | |
463 | { | |
464 | .name = "armada-drm", | |
465 | .driver_data = (unsigned long)&armada510_ops, | |
466 | }, { | |
467 | .name = "armada-510-drm", | |
468 | .driver_data = (unsigned long)&armada510_ops, | |
469 | }, | |
470 | { }, | |
471 | }; | |
472 | MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids); | |
473 | ||
474 | static struct platform_driver armada_drm_platform_driver = { | |
475 | .probe = armada_drm_probe, | |
476 | .remove = armada_drm_remove, | |
477 | .driver = { | |
478 | .name = "armada-drm", | |
96f60e37 RK |
479 | }, |
480 | .id_table = armada_drm_platform_ids, | |
481 | }; | |
482 | ||
483 | static int __init armada_drm_init(void) | |
484 | { | |
d8c96083 RK |
485 | int ret; |
486 | ||
f95aeb17 | 487 | armada_drm_driver.num_ioctls = ARRAY_SIZE(armada_ioctls); |
d8c96083 RK |
488 | |
489 | ret = platform_driver_register(&armada_lcd_platform_driver); | |
490 | if (ret) | |
491 | return ret; | |
492 | ret = platform_driver_register(&armada_drm_platform_driver); | |
493 | if (ret) | |
494 | platform_driver_unregister(&armada_lcd_platform_driver); | |
495 | return ret; | |
96f60e37 RK |
496 | } |
497 | module_init(armada_drm_init); | |
498 | ||
499 | static void __exit armada_drm_exit(void) | |
500 | { | |
501 | platform_driver_unregister(&armada_drm_platform_driver); | |
d8c96083 | 502 | platform_driver_unregister(&armada_lcd_platform_driver); |
96f60e37 RK |
503 | } |
504 | module_exit(armada_drm_exit); | |
505 | ||
506 | MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>"); | |
507 | MODULE_DESCRIPTION("Armada DRM Driver"); | |
508 | MODULE_LICENSE("GPL"); | |
509 | MODULE_ALIAS("platform:armada-drm"); |