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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> | |
af713795 | 17 | #include <linux/pm_runtime.h> |
48666d56 | 18 | #include "drm_fb_cma_helper.h" |
44adece5 | 19 | #include <drm/drm_fb_helper.h> |
c8b75bca | 20 | |
d5bc60f6 | 21 | #include "uapi/drm/vc4_drm.h" |
c8b75bca EA |
22 | #include "vc4_drv.h" |
23 | #include "vc4_regs.h" | |
24 | ||
25 | #define DRIVER_NAME "vc4" | |
26 | #define DRIVER_DESC "Broadcom VC4 graphics" | |
27 | #define DRIVER_DATE "20140616" | |
28 | #define DRIVER_MAJOR 0 | |
29 | #define DRIVER_MINOR 0 | |
30 | #define DRIVER_PATCHLEVEL 0 | |
31 | ||
32 | /* Helper function for mapping the regs on a platform device. */ | |
33 | void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index) | |
34 | { | |
35 | struct resource *res; | |
36 | void __iomem *map; | |
37 | ||
38 | res = platform_get_resource(dev, IORESOURCE_MEM, index); | |
39 | map = devm_ioremap_resource(&dev->dev, res); | |
40 | if (IS_ERR(map)) { | |
41 | DRM_ERROR("Failed to map registers: %ld\n", PTR_ERR(map)); | |
42 | return map; | |
43 | } | |
44 | ||
45 | return map; | |
46 | } | |
47 | ||
af713795 EA |
48 | static int vc4_get_param_ioctl(struct drm_device *dev, void *data, |
49 | struct drm_file *file_priv) | |
50 | { | |
51 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
52 | struct drm_vc4_get_param *args = data; | |
53 | int ret; | |
54 | ||
55 | if (args->pad != 0) | |
56 | return -EINVAL; | |
57 | ||
58 | switch (args->param) { | |
59 | case DRM_VC4_PARAM_V3D_IDENT0: | |
60 | ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev); | |
163195fc | 61 | if (ret < 0) |
af713795 EA |
62 | return ret; |
63 | args->value = V3D_READ(V3D_IDENT0); | |
64 | pm_runtime_put(&vc4->v3d->pdev->dev); | |
65 | break; | |
66 | case DRM_VC4_PARAM_V3D_IDENT1: | |
67 | ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev); | |
163195fc | 68 | if (ret < 0) |
af713795 EA |
69 | return ret; |
70 | args->value = V3D_READ(V3D_IDENT1); | |
71 | pm_runtime_put(&vc4->v3d->pdev->dev); | |
72 | break; | |
73 | case DRM_VC4_PARAM_V3D_IDENT2: | |
74 | ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev); | |
163195fc | 75 | if (ret < 0) |
af713795 EA |
76 | return ret; |
77 | args->value = V3D_READ(V3D_IDENT2); | |
78 | pm_runtime_put(&vc4->v3d->pdev->dev); | |
79 | break; | |
7363cee5 EA |
80 | case DRM_VC4_PARAM_SUPPORTS_BRANCHES: |
81 | args->value = true; | |
82 | break; | |
af713795 EA |
83 | default: |
84 | DRM_DEBUG("Unknown parameter %d\n", args->param); | |
85 | return -EINVAL; | |
86 | } | |
87 | ||
88 | return 0; | |
89 | } | |
90 | ||
48666d56 DF |
91 | static void vc4_lastclose(struct drm_device *dev) |
92 | { | |
93 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
94 | ||
63fe9bb8 | 95 | drm_fbdev_cma_restore_mode(vc4->fbdev); |
48666d56 DF |
96 | } |
97 | ||
c8b75bca EA |
98 | static const struct file_operations vc4_drm_fops = { |
99 | .owner = THIS_MODULE, | |
100 | .open = drm_open, | |
101 | .release = drm_release, | |
102 | .unlocked_ioctl = drm_ioctl, | |
463873d5 | 103 | .mmap = vc4_mmap, |
c8b75bca EA |
104 | .poll = drm_poll, |
105 | .read = drm_read, | |
106 | #ifdef CONFIG_COMPAT | |
107 | .compat_ioctl = drm_compat_ioctl, | |
108 | #endif | |
109 | .llseek = noop_llseek, | |
110 | }; | |
111 | ||
112 | static const struct drm_ioctl_desc vc4_drm_ioctls[] = { | |
b10c22e5 HJ |
113 | DRM_IOCTL_DEF_DRV(VC4_SUBMIT_CL, vc4_submit_cl_ioctl, DRM_RENDER_ALLOW), |
114 | DRM_IOCTL_DEF_DRV(VC4_WAIT_SEQNO, vc4_wait_seqno_ioctl, DRM_RENDER_ALLOW), | |
115 | DRM_IOCTL_DEF_DRV(VC4_WAIT_BO, vc4_wait_bo_ioctl, DRM_RENDER_ALLOW), | |
116 | DRM_IOCTL_DEF_DRV(VC4_CREATE_BO, vc4_create_bo_ioctl, DRM_RENDER_ALLOW), | |
117 | DRM_IOCTL_DEF_DRV(VC4_MMAP_BO, vc4_mmap_bo_ioctl, DRM_RENDER_ALLOW), | |
118 | DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, DRM_RENDER_ALLOW), | |
21461365 EA |
119 | DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl, |
120 | DRM_ROOT_ONLY), | |
af713795 | 121 | DRM_IOCTL_DEF_DRV(VC4_GET_PARAM, vc4_get_param_ioctl, DRM_RENDER_ALLOW), |
c8b75bca EA |
122 | }; |
123 | ||
124 | static struct drm_driver vc4_drm_driver = { | |
125 | .driver_features = (DRIVER_MODESET | | |
126 | DRIVER_ATOMIC | | |
127 | DRIVER_GEM | | |
d5b1a78a | 128 | DRIVER_HAVE_IRQ | |
0cd3e274 | 129 | DRIVER_RENDER | |
c8b75bca | 130 | DRIVER_PRIME), |
48666d56 | 131 | .lastclose = vc4_lastclose, |
d5b1a78a EA |
132 | .irq_handler = vc4_irq, |
133 | .irq_preinstall = vc4_irq_preinstall, | |
134 | .irq_postinstall = vc4_irq_postinstall, | |
135 | .irq_uninstall = vc4_irq_uninstall, | |
136 | ||
c8b75bca EA |
137 | .enable_vblank = vc4_enable_vblank, |
138 | .disable_vblank = vc4_disable_vblank, | |
792293cf | 139 | .get_vblank_counter = drm_vblank_no_hw_counter, |
1bf59f1d MK |
140 | .get_scanout_position = vc4_crtc_get_scanoutpos, |
141 | .get_vblank_timestamp = vc4_crtc_get_vblank_timestamp, | |
c8b75bca EA |
142 | |
143 | #if defined(CONFIG_DEBUG_FS) | |
144 | .debugfs_init = vc4_debugfs_init, | |
145 | .debugfs_cleanup = vc4_debugfs_cleanup, | |
146 | #endif | |
147 | ||
c826a6e1 | 148 | .gem_create_object = vc4_create_object, |
b82caafc | 149 | .gem_free_object_unlocked = vc4_free_object, |
c8b75bca EA |
150 | .gem_vm_ops = &drm_gem_cma_vm_ops, |
151 | ||
152 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, | |
153 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
154 | .gem_prime_import = drm_gem_prime_import, | |
463873d5 | 155 | .gem_prime_export = vc4_prime_export, |
c8b75bca EA |
156 | .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, |
157 | .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, | |
463873d5 | 158 | .gem_prime_vmap = vc4_prime_vmap, |
c8b75bca | 159 | .gem_prime_vunmap = drm_gem_cma_prime_vunmap, |
463873d5 | 160 | .gem_prime_mmap = vc4_prime_mmap, |
c8b75bca EA |
161 | |
162 | .dumb_create = vc4_dumb_create, | |
163 | .dumb_map_offset = drm_gem_cma_dumb_map_offset, | |
164 | .dumb_destroy = drm_gem_dumb_destroy, | |
165 | ||
166 | .ioctls = vc4_drm_ioctls, | |
167 | .num_ioctls = ARRAY_SIZE(vc4_drm_ioctls), | |
168 | .fops = &vc4_drm_fops, | |
169 | ||
170 | .name = DRIVER_NAME, | |
171 | .desc = DRIVER_DESC, | |
172 | .date = DRIVER_DATE, | |
173 | .major = DRIVER_MAJOR, | |
174 | .minor = DRIVER_MINOR, | |
175 | .patchlevel = DRIVER_PATCHLEVEL, | |
176 | }; | |
177 | ||
178 | static int compare_dev(struct device *dev, void *data) | |
179 | { | |
180 | return dev == data; | |
181 | } | |
182 | ||
183 | static void vc4_match_add_drivers(struct device *dev, | |
184 | struct component_match **match, | |
185 | struct platform_driver *const *drivers, | |
186 | int count) | |
187 | { | |
188 | int i; | |
189 | ||
190 | for (i = 0; i < count; i++) { | |
191 | struct device_driver *drv = &drivers[i]->driver; | |
192 | struct device *p = NULL, *d; | |
193 | ||
194 | while ((d = bus_find_device(&platform_bus_type, p, drv, | |
195 | (void *)platform_bus_type.match))) { | |
196 | put_device(p); | |
197 | component_match_add(dev, match, compare_dev, d); | |
198 | p = d; | |
199 | } | |
200 | put_device(p); | |
201 | } | |
202 | } | |
203 | ||
b3a15f6d EA |
204 | static void vc4_kick_out_firmware_fb(void) |
205 | { | |
206 | struct apertures_struct *ap; | |
207 | ||
208 | ap = alloc_apertures(1); | |
209 | if (!ap) | |
210 | return; | |
211 | ||
212 | /* Since VC4 is a UMA device, the simplefb node may have been | |
213 | * located anywhere in memory. | |
214 | */ | |
215 | ap->ranges[0].base = 0; | |
216 | ap->ranges[0].size = ~0; | |
217 | ||
44adece5 | 218 | drm_fb_helper_remove_conflicting_framebuffers(ap, "vc4drmfb", false); |
b3a15f6d EA |
219 | kfree(ap); |
220 | } | |
221 | ||
c8b75bca EA |
222 | static int vc4_drm_bind(struct device *dev) |
223 | { | |
224 | struct platform_device *pdev = to_platform_device(dev); | |
225 | struct drm_device *drm; | |
c8b75bca EA |
226 | struct vc4_dev *vc4; |
227 | int ret = 0; | |
228 | ||
229 | dev->coherent_dma_mask = DMA_BIT_MASK(32); | |
230 | ||
231 | vc4 = devm_kzalloc(dev, sizeof(*vc4), GFP_KERNEL); | |
232 | if (!vc4) | |
233 | return -ENOMEM; | |
234 | ||
235 | drm = drm_dev_alloc(&vc4_drm_driver, dev); | |
0f288605 TG |
236 | if (IS_ERR(drm)) |
237 | return PTR_ERR(drm); | |
c8b75bca EA |
238 | platform_set_drvdata(pdev, drm); |
239 | vc4->dev = drm; | |
240 | drm->dev_private = vc4; | |
241 | ||
c826a6e1 EA |
242 | vc4_bo_cache_init(drm); |
243 | ||
c8b75bca | 244 | drm_mode_config_init(drm); |
c8b75bca | 245 | |
d5b1a78a EA |
246 | vc4_gem_init(drm); |
247 | ||
c8b75bca EA |
248 | ret = component_bind_all(dev, drm); |
249 | if (ret) | |
d5b1a78a | 250 | goto gem_destroy; |
c8b75bca | 251 | |
b3a15f6d EA |
252 | vc4_kick_out_firmware_fb(); |
253 | ||
c8b75bca EA |
254 | ret = drm_dev_register(drm, 0); |
255 | if (ret < 0) | |
256 | goto unbind_all; | |
257 | ||
c8b75bca EA |
258 | vc4_kms_load(drm); |
259 | ||
260 | return 0; | |
261 | ||
c8b75bca EA |
262 | unbind_all: |
263 | component_unbind_all(dev, drm); | |
d5b1a78a EA |
264 | gem_destroy: |
265 | vc4_gem_destroy(drm); | |
c8b75bca | 266 | drm_dev_unref(drm); |
c826a6e1 | 267 | vc4_bo_cache_destroy(drm); |
c8b75bca EA |
268 | return ret; |
269 | } | |
270 | ||
271 | static void vc4_drm_unbind(struct device *dev) | |
272 | { | |
273 | struct platform_device *pdev = to_platform_device(dev); | |
274 | struct drm_device *drm = platform_get_drvdata(pdev); | |
48666d56 DF |
275 | struct vc4_dev *vc4 = to_vc4_dev(drm); |
276 | ||
277 | if (vc4->fbdev) | |
278 | drm_fbdev_cma_fini(vc4->fbdev); | |
c8b75bca EA |
279 | |
280 | drm_mode_config_cleanup(drm); | |
281 | ||
282 | drm_put_dev(drm); | |
283 | } | |
284 | ||
285 | static const struct component_master_ops vc4_drm_ops = { | |
286 | .bind = vc4_drm_bind, | |
287 | .unbind = vc4_drm_unbind, | |
288 | }; | |
289 | ||
290 | static struct platform_driver *const component_drivers[] = { | |
291 | &vc4_hdmi_driver, | |
08302c35 | 292 | &vc4_dpi_driver, |
c8b75bca | 293 | &vc4_hvs_driver, |
7a100969 | 294 | &vc4_crtc_driver, |
d3f5168a | 295 | &vc4_v3d_driver, |
c8b75bca EA |
296 | }; |
297 | ||
298 | static int vc4_platform_drm_probe(struct platform_device *pdev) | |
299 | { | |
300 | struct component_match *match = NULL; | |
301 | struct device *dev = &pdev->dev; | |
302 | ||
303 | vc4_match_add_drivers(dev, &match, | |
304 | component_drivers, ARRAY_SIZE(component_drivers)); | |
305 | ||
306 | return component_master_add_with_match(dev, &vc4_drm_ops, match); | |
307 | } | |
308 | ||
309 | static int vc4_platform_drm_remove(struct platform_device *pdev) | |
310 | { | |
311 | component_master_del(&pdev->dev, &vc4_drm_ops); | |
312 | ||
313 | return 0; | |
314 | } | |
315 | ||
316 | static const struct of_device_id vc4_of_match[] = { | |
317 | { .compatible = "brcm,bcm2835-vc4", }, | |
318 | {}, | |
319 | }; | |
320 | MODULE_DEVICE_TABLE(of, vc4_of_match); | |
321 | ||
322 | static struct platform_driver vc4_platform_driver = { | |
323 | .probe = vc4_platform_drm_probe, | |
324 | .remove = vc4_platform_drm_remove, | |
325 | .driver = { | |
326 | .name = "vc4-drm", | |
c8b75bca EA |
327 | .of_match_table = vc4_of_match, |
328 | }, | |
329 | }; | |
330 | ||
331 | static int __init vc4_drm_register(void) | |
332 | { | |
333 | int i, ret; | |
334 | ||
335 | for (i = 0; i < ARRAY_SIZE(component_drivers); i++) { | |
336 | ret = platform_driver_register(component_drivers[i]); | |
337 | if (ret) { | |
338 | while (--i >= 0) | |
339 | platform_driver_unregister(component_drivers[i]); | |
340 | return ret; | |
341 | } | |
342 | } | |
343 | return platform_driver_register(&vc4_platform_driver); | |
344 | } | |
345 | ||
346 | static void __exit vc4_drm_unregister(void) | |
347 | { | |
348 | int i; | |
349 | ||
350 | for (i = ARRAY_SIZE(component_drivers) - 1; i >= 0; i--) | |
351 | platform_driver_unregister(component_drivers[i]); | |
352 | ||
353 | platform_driver_unregister(&vc4_platform_driver); | |
354 | } | |
355 | ||
356 | module_init(vc4_drm_register); | |
357 | module_exit(vc4_drm_unregister); | |
358 | ||
359 | MODULE_ALIAS("platform:vc4-drm"); | |
360 | MODULE_DESCRIPTION("Broadcom VC4 DRM Driver"); | |
361 | MODULE_AUTHOR("Eric Anholt <eric@anholt.net>"); | |
362 | MODULE_LICENSE("GPL v2"); |