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> | |
7fc7e86d | 14 | #include <drm/drm_of.h> |
96f60e37 RK |
15 | #include "armada_crtc.h" |
16 | #include "armada_drm.h" | |
17 | #include "armada_gem.h" | |
18 | #include "armada_hw.h" | |
19 | #include <drm/armada_drm.h> | |
20 | #include "armada_ioctlP.h" | |
21 | ||
22 | static void armada_drm_unref_work(struct work_struct *work) | |
23 | { | |
24 | struct armada_private *priv = | |
25 | container_of(work, struct armada_private, fb_unref_work); | |
26 | struct drm_framebuffer *fb; | |
27 | ||
28 | while (kfifo_get(&priv->fb_unref, &fb)) | |
29 | drm_framebuffer_unreference(fb); | |
30 | } | |
31 | ||
32 | /* Must be called with dev->event_lock held */ | |
33 | void __armada_drm_queue_unref_work(struct drm_device *dev, | |
34 | struct drm_framebuffer *fb) | |
35 | { | |
36 | struct armada_private *priv = dev->dev_private; | |
37 | ||
d13c46c6 | 38 | WARN_ON(!kfifo_put(&priv->fb_unref, fb)); |
96f60e37 RK |
39 | schedule_work(&priv->fb_unref_work); |
40 | } | |
41 | ||
42 | void armada_drm_queue_unref_work(struct drm_device *dev, | |
43 | struct drm_framebuffer *fb) | |
44 | { | |
45 | unsigned long flags; | |
46 | ||
47 | spin_lock_irqsave(&dev->event_lock, flags); | |
48 | __armada_drm_queue_unref_work(dev, fb); | |
49 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
50 | } | |
51 | ||
52 | static int armada_drm_load(struct drm_device *dev, unsigned long flags) | |
53 | { | |
96f60e37 | 54 | struct armada_private *priv; |
96f60e37 | 55 | struct resource *mem = NULL; |
0fb2970b | 56 | int ret, n; |
96f60e37 | 57 | |
0fb2970b | 58 | for (n = 0; ; n++) { |
96f60e37 RK |
59 | struct resource *r = platform_get_resource(dev->platformdev, |
60 | IORESOURCE_MEM, n); | |
61 | if (!r) | |
62 | break; | |
63 | ||
64 | /* Resources above 64K are graphics memory */ | |
65 | if (resource_size(r) > SZ_64K) | |
66 | mem = r; | |
96f60e37 RK |
67 | else |
68 | return -EINVAL; | |
69 | } | |
70 | ||
d8c96083 | 71 | if (!mem) |
96f60e37 RK |
72 | return -ENXIO; |
73 | ||
74 | if (!devm_request_mem_region(dev->dev, mem->start, | |
75 | resource_size(mem), "armada-drm")) | |
76 | return -EBUSY; | |
77 | ||
78 | priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL); | |
79 | if (!priv) { | |
80 | DRM_ERROR("failed to allocate private\n"); | |
81 | return -ENOMEM; | |
82 | } | |
83 | ||
50fb3c3b | 84 | platform_set_drvdata(dev->platformdev, dev); |
96f60e37 RK |
85 | dev->dev_private = priv; |
86 | ||
96f60e37 RK |
87 | INIT_WORK(&priv->fb_unref_work, armada_drm_unref_work); |
88 | INIT_KFIFO(priv->fb_unref); | |
89 | ||
90 | /* Mode setting support */ | |
91 | drm_mode_config_init(dev); | |
92 | dev->mode_config.min_width = 320; | |
93 | dev->mode_config.min_height = 200; | |
94 | ||
95 | /* | |
96 | * With vscale enabled, the maximum width is 1920 due to the | |
97 | * 1920 by 3 lines RAM | |
98 | */ | |
99 | dev->mode_config.max_width = 1920; | |
100 | dev->mode_config.max_height = 2048; | |
101 | ||
102 | dev->mode_config.preferred_depth = 24; | |
103 | dev->mode_config.funcs = &armada_drm_mode_config_funcs; | |
104 | drm_mm_init(&priv->linear, mem->start, resource_size(mem)); | |
0b8ebeac | 105 | mutex_init(&priv->linear_lock); |
96f60e37 | 106 | |
0fb2970b RK |
107 | ret = component_bind_all(dev->dev, dev); |
108 | if (ret) | |
109 | goto err_kms; | |
585b691e | 110 | |
d0165407 | 111 | ret = drm_vblank_init(dev, dev->mode_config.num_crtc); |
96f60e37 | 112 | if (ret) |
0101fd00 | 113 | goto err_comp; |
96f60e37 | 114 | |
0544e38d | 115 | dev->irq_enabled = true; |
96f60e37 RK |
116 | dev->vblank_disable_allowed = 1; |
117 | ||
118 | ret = armada_fbdev_init(dev); | |
119 | if (ret) | |
0101fd00 | 120 | goto err_comp; |
96f60e37 RK |
121 | |
122 | drm_kms_helper_poll_init(dev); | |
123 | ||
124 | return 0; | |
125 | ||
0101fd00 | 126 | err_comp: |
0fb2970b | 127 | component_unbind_all(dev->dev, dev); |
96f60e37 RK |
128 | err_kms: |
129 | drm_mode_config_cleanup(dev); | |
130 | drm_mm_takedown(&priv->linear); | |
131 | flush_work(&priv->fb_unref_work); | |
132 | ||
133 | return ret; | |
134 | } | |
135 | ||
136 | static int armada_drm_unload(struct drm_device *dev) | |
137 | { | |
138 | struct armada_private *priv = dev->dev_private; | |
139 | ||
140 | drm_kms_helper_poll_fini(dev); | |
141 | armada_fbdev_fini(dev); | |
0101fd00 | 142 | |
0fb2970b | 143 | component_unbind_all(dev->dev, dev); |
0101fd00 | 144 | |
96f60e37 RK |
145 | drm_mode_config_cleanup(dev); |
146 | drm_mm_takedown(&priv->linear); | |
147 | flush_work(&priv->fb_unref_work); | |
148 | dev->dev_private = NULL; | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
96f60e37 | 153 | /* These are called under the vbl_lock. */ |
88e72717 | 154 | static int armada_drm_enable_vblank(struct drm_device *dev, unsigned int pipe) |
96f60e37 RK |
155 | { |
156 | struct armada_private *priv = dev->dev_private; | |
88e72717 | 157 | armada_drm_crtc_enable_irq(priv->dcrtc[pipe], VSYNC_IRQ_ENA); |
96f60e37 RK |
158 | return 0; |
159 | } | |
160 | ||
88e72717 | 161 | static void armada_drm_disable_vblank(struct drm_device *dev, unsigned int pipe) |
96f60e37 RK |
162 | { |
163 | struct armada_private *priv = dev->dev_private; | |
88e72717 | 164 | armada_drm_crtc_disable_irq(priv->dcrtc[pipe], VSYNC_IRQ_ENA); |
96f60e37 RK |
165 | } |
166 | ||
96f60e37 | 167 | static struct drm_ioctl_desc armada_ioctls[] = { |
f8c47144 DV |
168 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,0), |
169 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, 0), | |
170 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, 0), | |
96f60e37 RK |
171 | }; |
172 | ||
2f5ae490 RK |
173 | static void armada_drm_lastclose(struct drm_device *dev) |
174 | { | |
175 | armada_fbdev_lastclose(dev); | |
176 | } | |
177 | ||
96f60e37 RK |
178 | static const struct file_operations armada_drm_fops = { |
179 | .owner = THIS_MODULE, | |
180 | .llseek = no_llseek, | |
181 | .read = drm_read, | |
182 | .poll = drm_poll, | |
183 | .unlocked_ioctl = drm_ioctl, | |
184 | .mmap = drm_gem_mmap, | |
185 | .open = drm_open, | |
186 | .release = drm_release, | |
187 | }; | |
188 | ||
189 | static struct drm_driver armada_drm_driver = { | |
190 | .load = armada_drm_load, | |
191 | .open = NULL, | |
192 | .preclose = NULL, | |
193 | .postclose = NULL, | |
2f5ae490 | 194 | .lastclose = armada_drm_lastclose, |
96f60e37 | 195 | .unload = armada_drm_unload, |
915b4d11 | 196 | .set_busid = drm_platform_set_busid, |
b44f8408 | 197 | .get_vblank_counter = drm_vblank_no_hw_counter, |
96f60e37 RK |
198 | .enable_vblank = armada_drm_enable_vblank, |
199 | .disable_vblank = armada_drm_disable_vblank, | |
96f60e37 RK |
200 | #ifdef CONFIG_DEBUG_FS |
201 | .debugfs_init = armada_drm_debugfs_init, | |
202 | .debugfs_cleanup = armada_drm_debugfs_cleanup, | |
203 | #endif | |
96f60e37 RK |
204 | .gem_free_object = armada_gem_free_object, |
205 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, | |
206 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
207 | .gem_prime_export = armada_gem_prime_export, | |
208 | .gem_prime_import = armada_gem_prime_import, | |
209 | .dumb_create = armada_gem_dumb_create, | |
210 | .dumb_map_offset = armada_gem_dumb_map_offset, | |
211 | .dumb_destroy = armada_gem_dumb_destroy, | |
212 | .gem_vm_ops = &armada_gem_vm_ops, | |
213 | .major = 1, | |
214 | .minor = 0, | |
215 | .name = "armada-drm", | |
216 | .desc = "Armada SoC DRM", | |
217 | .date = "20120730", | |
218 | .driver_features = DRIVER_GEM | DRIVER_MODESET | | |
0544e38d | 219 | DRIVER_HAVE_IRQ | DRIVER_PRIME, |
96f60e37 RK |
220 | .ioctls = armada_ioctls, |
221 | .fops = &armada_drm_fops, | |
222 | }; | |
223 | ||
0101fd00 RK |
224 | static int armada_drm_bind(struct device *dev) |
225 | { | |
226 | return drm_platform_init(&armada_drm_driver, to_platform_device(dev)); | |
227 | } | |
228 | ||
229 | static void armada_drm_unbind(struct device *dev) | |
230 | { | |
231 | drm_put_dev(dev_get_drvdata(dev)); | |
232 | } | |
233 | ||
234 | static int compare_of(struct device *dev, void *data) | |
235 | { | |
236 | return dev->of_node == data; | |
237 | } | |
238 | ||
239 | static int compare_dev_name(struct device *dev, void *data) | |
240 | { | |
241 | const char *name = data; | |
242 | return !strcmp(dev_name(dev), name); | |
243 | } | |
244 | ||
245 | static void armada_add_endpoints(struct device *dev, | |
246 | struct component_match **match, struct device_node *port) | |
247 | { | |
248 | struct device_node *ep, *remote; | |
249 | ||
250 | for_each_child_of_node(port, ep) { | |
251 | remote = of_graph_get_remote_port_parent(ep); | |
252 | if (!remote || !of_device_is_available(remote)) { | |
253 | of_node_put(remote); | |
254 | continue; | |
255 | } else if (!of_device_is_available(remote->parent)) { | |
256 | dev_warn(dev, "parent device of %s is not available\n", | |
257 | remote->full_name); | |
258 | of_node_put(remote); | |
259 | continue; | |
260 | } | |
261 | ||
262 | component_match_add(dev, match, compare_of, remote); | |
263 | of_node_put(remote); | |
264 | } | |
265 | } | |
266 | ||
7fc7e86d LD |
267 | static const struct component_master_ops armada_master_ops = { |
268 | .bind = armada_drm_bind, | |
269 | .unbind = armada_drm_unbind, | |
270 | }; | |
0101fd00 | 271 | |
7fc7e86d LD |
272 | static int armada_drm_probe(struct platform_device *pdev) |
273 | { | |
274 | struct component_match *match = NULL; | |
275 | struct device *dev = &pdev->dev; | |
276 | int ret; | |
0101fd00 | 277 | |
7fc7e86d LD |
278 | ret = drm_of_component_probe(dev, compare_dev_name, &armada_master_ops); |
279 | if (ret != -EINVAL) | |
280 | return ret; | |
0101fd00 | 281 | |
7fc7e86d | 282 | if (dev->platform_data) { |
0101fd00 | 283 | char **devices = dev->platform_data; |
7fc7e86d | 284 | struct device_node *port; |
0101fd00 | 285 | struct device *d; |
7fc7e86d | 286 | int i; |
0101fd00 RK |
287 | |
288 | for (i = 0; devices[i]; i++) | |
7fc7e86d | 289 | component_match_add(dev, &match, compare_dev_name, |
0101fd00 RK |
290 | devices[i]); |
291 | ||
292 | if (i == 0) { | |
293 | dev_err(dev, "missing 'ports' property\n"); | |
294 | return -ENODEV; | |
295 | } | |
296 | ||
297 | for (i = 0; devices[i]; i++) { | |
298 | d = bus_find_device_by_name(&platform_bus_type, NULL, | |
7fc7e86d | 299 | devices[i]); |
0101fd00 RK |
300 | if (d && d->of_node) { |
301 | for_each_child_of_node(d->of_node, port) | |
7fc7e86d | 302 | armada_add_endpoints(dev, &match, port); |
0101fd00 RK |
303 | } |
304 | put_device(d); | |
305 | } | |
306 | } | |
307 | ||
0fb2970b RK |
308 | return component_master_add_with_match(&pdev->dev, &armada_master_ops, |
309 | match); | |
96f60e37 RK |
310 | } |
311 | ||
312 | static int armada_drm_remove(struct platform_device *pdev) | |
313 | { | |
0fb2970b | 314 | component_master_del(&pdev->dev, &armada_master_ops); |
96f60e37 RK |
315 | return 0; |
316 | } | |
317 | ||
318 | static const struct platform_device_id armada_drm_platform_ids[] = { | |
319 | { | |
320 | .name = "armada-drm", | |
96f60e37 RK |
321 | }, { |
322 | .name = "armada-510-drm", | |
96f60e37 RK |
323 | }, |
324 | { }, | |
325 | }; | |
326 | MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids); | |
327 | ||
328 | static struct platform_driver armada_drm_platform_driver = { | |
329 | .probe = armada_drm_probe, | |
330 | .remove = armada_drm_remove, | |
331 | .driver = { | |
332 | .name = "armada-drm", | |
96f60e37 RK |
333 | }, |
334 | .id_table = armada_drm_platform_ids, | |
335 | }; | |
336 | ||
337 | static int __init armada_drm_init(void) | |
338 | { | |
d8c96083 RK |
339 | int ret; |
340 | ||
f95aeb17 | 341 | armada_drm_driver.num_ioctls = ARRAY_SIZE(armada_ioctls); |
d8c96083 RK |
342 | |
343 | ret = platform_driver_register(&armada_lcd_platform_driver); | |
344 | if (ret) | |
345 | return ret; | |
346 | ret = platform_driver_register(&armada_drm_platform_driver); | |
347 | if (ret) | |
348 | platform_driver_unregister(&armada_lcd_platform_driver); | |
349 | return ret; | |
96f60e37 RK |
350 | } |
351 | module_init(armada_drm_init); | |
352 | ||
353 | static void __exit armada_drm_exit(void) | |
354 | { | |
355 | platform_driver_unregister(&armada_drm_platform_driver); | |
d8c96083 | 356 | platform_driver_unregister(&armada_lcd_platform_driver); |
96f60e37 RK |
357 | } |
358 | module_exit(armada_drm_exit); | |
359 | ||
360 | MODULE_AUTHOR("Russell King <rmk+kernel@arm.linux.org.uk>"); | |
361 | MODULE_DESCRIPTION("Armada DRM Driver"); | |
362 | MODULE_LICENSE("GPL"); | |
363 | MODULE_ALIAS("platform:armada-drm"); |