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c8b75bca EA |
1 | /* |
2 | * Copyright (C) 2014-2015 Broadcom | |
3 | * Copyright (C) 2013 Red Hat | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | */ | |
9 | ||
10 | #include <linux/clk.h> | |
11 | #include <linux/component.h> | |
12 | #include <linux/device.h> | |
13 | #include <linux/io.h> | |
14 | #include <linux/module.h> | |
15 | #include <linux/of_platform.h> | |
16 | #include <linux/platform_device.h> | |
48666d56 | 17 | #include "drm_fb_cma_helper.h" |
c8b75bca | 18 | |
d5bc60f6 | 19 | #include "uapi/drm/vc4_drm.h" |
c8b75bca EA |
20 | #include "vc4_drv.h" |
21 | #include "vc4_regs.h" | |
22 | ||
23 | #define DRIVER_NAME "vc4" | |
24 | #define DRIVER_DESC "Broadcom VC4 graphics" | |
25 | #define DRIVER_DATE "20140616" | |
26 | #define DRIVER_MAJOR 0 | |
27 | #define DRIVER_MINOR 0 | |
28 | #define DRIVER_PATCHLEVEL 0 | |
29 | ||
30 | /* Helper function for mapping the regs on a platform device. */ | |
31 | void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index) | |
32 | { | |
33 | struct resource *res; | |
34 | void __iomem *map; | |
35 | ||
36 | res = platform_get_resource(dev, IORESOURCE_MEM, index); | |
37 | map = devm_ioremap_resource(&dev->dev, res); | |
38 | if (IS_ERR(map)) { | |
39 | DRM_ERROR("Failed to map registers: %ld\n", PTR_ERR(map)); | |
40 | return map; | |
41 | } | |
42 | ||
43 | return map; | |
44 | } | |
45 | ||
48666d56 DF |
46 | static void vc4_lastclose(struct drm_device *dev) |
47 | { | |
48 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
49 | ||
50 | if (vc4->fbdev) | |
51 | drm_fbdev_cma_restore_mode(vc4->fbdev); | |
52 | } | |
53 | ||
c8b75bca EA |
54 | static const struct file_operations vc4_drm_fops = { |
55 | .owner = THIS_MODULE, | |
56 | .open = drm_open, | |
57 | .release = drm_release, | |
58 | .unlocked_ioctl = drm_ioctl, | |
463873d5 | 59 | .mmap = vc4_mmap, |
c8b75bca EA |
60 | .poll = drm_poll, |
61 | .read = drm_read, | |
62 | #ifdef CONFIG_COMPAT | |
63 | .compat_ioctl = drm_compat_ioctl, | |
64 | #endif | |
65 | .llseek = noop_llseek, | |
66 | }; | |
67 | ||
68 | static const struct drm_ioctl_desc vc4_drm_ioctls[] = { | |
d5b1a78a EA |
69 | DRM_IOCTL_DEF_DRV(VC4_SUBMIT_CL, vc4_submit_cl_ioctl, 0), |
70 | DRM_IOCTL_DEF_DRV(VC4_WAIT_SEQNO, vc4_wait_seqno_ioctl, 0), | |
71 | DRM_IOCTL_DEF_DRV(VC4_WAIT_BO, vc4_wait_bo_ioctl, 0), | |
d5bc60f6 EA |
72 | DRM_IOCTL_DEF_DRV(VC4_CREATE_BO, vc4_create_bo_ioctl, 0), |
73 | DRM_IOCTL_DEF_DRV(VC4_MMAP_BO, vc4_mmap_bo_ioctl, 0), | |
463873d5 | 74 | DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, 0), |
21461365 EA |
75 | DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl, |
76 | DRM_ROOT_ONLY), | |
c8b75bca EA |
77 | }; |
78 | ||
79 | static struct drm_driver vc4_drm_driver = { | |
80 | .driver_features = (DRIVER_MODESET | | |
81 | DRIVER_ATOMIC | | |
82 | DRIVER_GEM | | |
d5b1a78a | 83 | DRIVER_HAVE_IRQ | |
0cd3e274 | 84 | DRIVER_RENDER | |
c8b75bca | 85 | DRIVER_PRIME), |
48666d56 | 86 | .lastclose = vc4_lastclose, |
d5b1a78a EA |
87 | .irq_handler = vc4_irq, |
88 | .irq_preinstall = vc4_irq_preinstall, | |
89 | .irq_postinstall = vc4_irq_postinstall, | |
90 | .irq_uninstall = vc4_irq_uninstall, | |
91 | ||
c8b75bca EA |
92 | .enable_vblank = vc4_enable_vblank, |
93 | .disable_vblank = vc4_disable_vblank, | |
94 | .get_vblank_counter = drm_vblank_count, | |
95 | ||
96 | #if defined(CONFIG_DEBUG_FS) | |
97 | .debugfs_init = vc4_debugfs_init, | |
98 | .debugfs_cleanup = vc4_debugfs_cleanup, | |
99 | #endif | |
100 | ||
c826a6e1 EA |
101 | .gem_create_object = vc4_create_object, |
102 | .gem_free_object = vc4_free_object, | |
c8b75bca EA |
103 | .gem_vm_ops = &drm_gem_cma_vm_ops, |
104 | ||
105 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, | |
106 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
107 | .gem_prime_import = drm_gem_prime_import, | |
463873d5 | 108 | .gem_prime_export = vc4_prime_export, |
c8b75bca EA |
109 | .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, |
110 | .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, | |
463873d5 | 111 | .gem_prime_vmap = vc4_prime_vmap, |
c8b75bca | 112 | .gem_prime_vunmap = drm_gem_cma_prime_vunmap, |
463873d5 | 113 | .gem_prime_mmap = vc4_prime_mmap, |
c8b75bca EA |
114 | |
115 | .dumb_create = vc4_dumb_create, | |
116 | .dumb_map_offset = drm_gem_cma_dumb_map_offset, | |
117 | .dumb_destroy = drm_gem_dumb_destroy, | |
118 | ||
119 | .ioctls = vc4_drm_ioctls, | |
120 | .num_ioctls = ARRAY_SIZE(vc4_drm_ioctls), | |
121 | .fops = &vc4_drm_fops, | |
122 | ||
123 | .name = DRIVER_NAME, | |
124 | .desc = DRIVER_DESC, | |
125 | .date = DRIVER_DATE, | |
126 | .major = DRIVER_MAJOR, | |
127 | .minor = DRIVER_MINOR, | |
128 | .patchlevel = DRIVER_PATCHLEVEL, | |
129 | }; | |
130 | ||
131 | static int compare_dev(struct device *dev, void *data) | |
132 | { | |
133 | return dev == data; | |
134 | } | |
135 | ||
136 | static void vc4_match_add_drivers(struct device *dev, | |
137 | struct component_match **match, | |
138 | struct platform_driver *const *drivers, | |
139 | int count) | |
140 | { | |
141 | int i; | |
142 | ||
143 | for (i = 0; i < count; i++) { | |
144 | struct device_driver *drv = &drivers[i]->driver; | |
145 | struct device *p = NULL, *d; | |
146 | ||
147 | while ((d = bus_find_device(&platform_bus_type, p, drv, | |
148 | (void *)platform_bus_type.match))) { | |
149 | put_device(p); | |
150 | component_match_add(dev, match, compare_dev, d); | |
151 | p = d; | |
152 | } | |
153 | put_device(p); | |
154 | } | |
155 | } | |
156 | ||
b3a15f6d EA |
157 | static void vc4_kick_out_firmware_fb(void) |
158 | { | |
159 | struct apertures_struct *ap; | |
160 | ||
161 | ap = alloc_apertures(1); | |
162 | if (!ap) | |
163 | return; | |
164 | ||
165 | /* Since VC4 is a UMA device, the simplefb node may have been | |
166 | * located anywhere in memory. | |
167 | */ | |
168 | ap->ranges[0].base = 0; | |
169 | ap->ranges[0].size = ~0; | |
170 | ||
171 | remove_conflicting_framebuffers(ap, "vc4drmfb", false); | |
172 | kfree(ap); | |
173 | } | |
174 | ||
c8b75bca EA |
175 | static int vc4_drm_bind(struct device *dev) |
176 | { | |
177 | struct platform_device *pdev = to_platform_device(dev); | |
178 | struct drm_device *drm; | |
179 | struct drm_connector *connector; | |
180 | struct vc4_dev *vc4; | |
181 | int ret = 0; | |
182 | ||
183 | dev->coherent_dma_mask = DMA_BIT_MASK(32); | |
184 | ||
185 | vc4 = devm_kzalloc(dev, sizeof(*vc4), GFP_KERNEL); | |
186 | if (!vc4) | |
187 | return -ENOMEM; | |
188 | ||
189 | drm = drm_dev_alloc(&vc4_drm_driver, dev); | |
190 | if (!drm) | |
191 | return -ENOMEM; | |
192 | platform_set_drvdata(pdev, drm); | |
193 | vc4->dev = drm; | |
194 | drm->dev_private = vc4; | |
195 | ||
c826a6e1 EA |
196 | vc4_bo_cache_init(drm); |
197 | ||
c8b75bca EA |
198 | drm_mode_config_init(drm); |
199 | if (ret) | |
200 | goto unref; | |
201 | ||
d5b1a78a EA |
202 | vc4_gem_init(drm); |
203 | ||
c8b75bca EA |
204 | ret = component_bind_all(dev, drm); |
205 | if (ret) | |
d5b1a78a | 206 | goto gem_destroy; |
c8b75bca | 207 | |
b3a15f6d EA |
208 | vc4_kick_out_firmware_fb(); |
209 | ||
c8b75bca EA |
210 | ret = drm_dev_register(drm, 0); |
211 | if (ret < 0) | |
212 | goto unbind_all; | |
213 | ||
214 | /* Connector registration has to occur after DRM device | |
215 | * registration, because it creates sysfs entries based on the | |
216 | * DRM device. | |
217 | */ | |
218 | list_for_each_entry(connector, &drm->mode_config.connector_list, head) { | |
219 | ret = drm_connector_register(connector); | |
220 | if (ret) | |
221 | goto unregister; | |
222 | } | |
223 | ||
224 | vc4_kms_load(drm); | |
225 | ||
226 | return 0; | |
227 | ||
228 | unregister: | |
229 | drm_dev_unregister(drm); | |
230 | unbind_all: | |
231 | component_unbind_all(dev, drm); | |
d5b1a78a EA |
232 | gem_destroy: |
233 | vc4_gem_destroy(drm); | |
c8b75bca EA |
234 | unref: |
235 | drm_dev_unref(drm); | |
c826a6e1 | 236 | vc4_bo_cache_destroy(drm); |
c8b75bca EA |
237 | return ret; |
238 | } | |
239 | ||
240 | static void vc4_drm_unbind(struct device *dev) | |
241 | { | |
242 | struct platform_device *pdev = to_platform_device(dev); | |
243 | struct drm_device *drm = platform_get_drvdata(pdev); | |
48666d56 DF |
244 | struct vc4_dev *vc4 = to_vc4_dev(drm); |
245 | ||
246 | if (vc4->fbdev) | |
247 | drm_fbdev_cma_fini(vc4->fbdev); | |
c8b75bca EA |
248 | |
249 | drm_mode_config_cleanup(drm); | |
250 | ||
251 | drm_put_dev(drm); | |
252 | } | |
253 | ||
254 | static const struct component_master_ops vc4_drm_ops = { | |
255 | .bind = vc4_drm_bind, | |
256 | .unbind = vc4_drm_unbind, | |
257 | }; | |
258 | ||
259 | static struct platform_driver *const component_drivers[] = { | |
260 | &vc4_hdmi_driver, | |
08302c35 | 261 | &vc4_dpi_driver, |
c8b75bca EA |
262 | &vc4_crtc_driver, |
263 | &vc4_hvs_driver, | |
d3f5168a | 264 | &vc4_v3d_driver, |
c8b75bca EA |
265 | }; |
266 | ||
267 | static int vc4_platform_drm_probe(struct platform_device *pdev) | |
268 | { | |
269 | struct component_match *match = NULL; | |
270 | struct device *dev = &pdev->dev; | |
271 | ||
272 | vc4_match_add_drivers(dev, &match, | |
273 | component_drivers, ARRAY_SIZE(component_drivers)); | |
274 | ||
275 | return component_master_add_with_match(dev, &vc4_drm_ops, match); | |
276 | } | |
277 | ||
278 | static int vc4_platform_drm_remove(struct platform_device *pdev) | |
279 | { | |
280 | component_master_del(&pdev->dev, &vc4_drm_ops); | |
281 | ||
282 | return 0; | |
283 | } | |
284 | ||
285 | static const struct of_device_id vc4_of_match[] = { | |
286 | { .compatible = "brcm,bcm2835-vc4", }, | |
287 | {}, | |
288 | }; | |
289 | MODULE_DEVICE_TABLE(of, vc4_of_match); | |
290 | ||
291 | static struct platform_driver vc4_platform_driver = { | |
292 | .probe = vc4_platform_drm_probe, | |
293 | .remove = vc4_platform_drm_remove, | |
294 | .driver = { | |
295 | .name = "vc4-drm", | |
c8b75bca EA |
296 | .of_match_table = vc4_of_match, |
297 | }, | |
298 | }; | |
299 | ||
300 | static int __init vc4_drm_register(void) | |
301 | { | |
302 | int i, ret; | |
303 | ||
304 | for (i = 0; i < ARRAY_SIZE(component_drivers); i++) { | |
305 | ret = platform_driver_register(component_drivers[i]); | |
306 | if (ret) { | |
307 | while (--i >= 0) | |
308 | platform_driver_unregister(component_drivers[i]); | |
309 | return ret; | |
310 | } | |
311 | } | |
312 | return platform_driver_register(&vc4_platform_driver); | |
313 | } | |
314 | ||
315 | static void __exit vc4_drm_unregister(void) | |
316 | { | |
317 | int i; | |
318 | ||
319 | for (i = ARRAY_SIZE(component_drivers) - 1; i >= 0; i--) | |
320 | platform_driver_unregister(component_drivers[i]); | |
321 | ||
322 | platform_driver_unregister(&vc4_platform_driver); | |
323 | } | |
324 | ||
325 | module_init(vc4_drm_register); | |
326 | module_exit(vc4_drm_unregister); | |
327 | ||
328 | MODULE_ALIAS("platform:vc4-drm"); | |
329 | MODULE_DESCRIPTION("Broadcom VC4 DRM Driver"); | |
330 | MODULE_AUTHOR("Eric Anholt <eric@anholt.net>"); | |
331 | MODULE_LICENSE("GPL v2"); |