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26#include <linux/clk.h>
27#include <linux/component.h>
28#include <linux/device.h>
29#include <linux/io.h>
30#include <linux/module.h>
31#include <linux/of_platform.h>
32#include <linux/platform_device.h>
33#include <linux/pm_runtime.h>
34#include <drm/drm_fb_cma_helper.h>
35#include <drm/drm_fb_helper.h>
36#include <drm/drm_atomic_helper.h>
37
38#include "uapi/drm/vc4_drm.h"
39#include "vc4_drv.h"
40#include "vc4_regs.h"
41
42#define DRIVER_NAME "vc4"
43#define DRIVER_DESC "Broadcom VC4 graphics"
44#define DRIVER_DATE "20140616"
45#define DRIVER_MAJOR 0
46#define DRIVER_MINOR 0
47#define DRIVER_PATCHLEVEL 0
48
49
50void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index)
51{
52 struct resource *res;
53 void __iomem *map;
54
55 res = platform_get_resource(dev, IORESOURCE_MEM, index);
56 map = devm_ioremap_resource(&dev->dev, res);
57 if (IS_ERR(map)) {
58 DRM_ERROR("Failed to map registers: %ld\n", PTR_ERR(map));
59 return map;
60 }
61
62 return map;
63}
64
65static int vc4_get_param_ioctl(struct drm_device *dev, void *data,
66 struct drm_file *file_priv)
67{
68 struct vc4_dev *vc4 = to_vc4_dev(dev);
69 struct drm_vc4_get_param *args = data;
70 int ret;
71
72 if (args->pad != 0)
73 return -EINVAL;
74
75 switch (args->param) {
76 case DRM_VC4_PARAM_V3D_IDENT0:
77 ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
78 if (ret < 0)
79 return ret;
80 args->value = V3D_READ(V3D_IDENT0);
81 pm_runtime_mark_last_busy(&vc4->v3d->pdev->dev);
82 pm_runtime_put_autosuspend(&vc4->v3d->pdev->dev);
83 break;
84 case DRM_VC4_PARAM_V3D_IDENT1:
85 ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
86 if (ret < 0)
87 return ret;
88 args->value = V3D_READ(V3D_IDENT1);
89 pm_runtime_mark_last_busy(&vc4->v3d->pdev->dev);
90 pm_runtime_put_autosuspend(&vc4->v3d->pdev->dev);
91 break;
92 case DRM_VC4_PARAM_V3D_IDENT2:
93 ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
94 if (ret < 0)
95 return ret;
96 args->value = V3D_READ(V3D_IDENT2);
97 pm_runtime_mark_last_busy(&vc4->v3d->pdev->dev);
98 pm_runtime_put_autosuspend(&vc4->v3d->pdev->dev);
99 break;
100 case DRM_VC4_PARAM_SUPPORTS_BRANCHES:
101 case DRM_VC4_PARAM_SUPPORTS_ETC1:
102 case DRM_VC4_PARAM_SUPPORTS_THREADED_FS:
103 case DRM_VC4_PARAM_SUPPORTS_FIXED_RCL_ORDER:
104 case DRM_VC4_PARAM_SUPPORTS_MADVISE:
105 case DRM_VC4_PARAM_SUPPORTS_PERFMON:
106 args->value = true;
107 break;
108 default:
109 DRM_DEBUG("Unknown parameter %d\n", args->param);
110 return -EINVAL;
111 }
112
113 return 0;
114}
115
116static int vc4_open(struct drm_device *dev, struct drm_file *file)
117{
118 struct vc4_file *vc4file;
119
120 vc4file = kzalloc(sizeof(*vc4file), GFP_KERNEL);
121 if (!vc4file)
122 return -ENOMEM;
123
124 vc4_perfmon_open_file(vc4file);
125 file->driver_priv = vc4file;
126 return 0;
127}
128
129static void vc4_close(struct drm_device *dev, struct drm_file *file)
130{
131 struct vc4_file *vc4file = file->driver_priv;
132
133 vc4_perfmon_close_file(vc4file);
134 kfree(vc4file);
135}
136
137static const struct vm_operations_struct vc4_vm_ops = {
138 .fault = vc4_fault,
139 .open = drm_gem_vm_open,
140 .close = drm_gem_vm_close,
141};
142
143static const struct file_operations vc4_drm_fops = {
144 .owner = THIS_MODULE,
145 .open = drm_open,
146 .release = drm_release,
147 .unlocked_ioctl = drm_ioctl,
148 .mmap = vc4_mmap,
149 .poll = drm_poll,
150 .read = drm_read,
151 .compat_ioctl = drm_compat_ioctl,
152 .llseek = noop_llseek,
153};
154
155static const struct drm_ioctl_desc vc4_drm_ioctls[] = {
156 DRM_IOCTL_DEF_DRV(VC4_SUBMIT_CL, vc4_submit_cl_ioctl, DRM_RENDER_ALLOW),
157 DRM_IOCTL_DEF_DRV(VC4_WAIT_SEQNO, vc4_wait_seqno_ioctl, DRM_RENDER_ALLOW),
158 DRM_IOCTL_DEF_DRV(VC4_WAIT_BO, vc4_wait_bo_ioctl, DRM_RENDER_ALLOW),
159 DRM_IOCTL_DEF_DRV(VC4_CREATE_BO, vc4_create_bo_ioctl, DRM_RENDER_ALLOW),
160 DRM_IOCTL_DEF_DRV(VC4_MMAP_BO, vc4_mmap_bo_ioctl, DRM_RENDER_ALLOW),
161 DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, DRM_RENDER_ALLOW),
162 DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl,
163 DRM_ROOT_ONLY),
164 DRM_IOCTL_DEF_DRV(VC4_GET_PARAM, vc4_get_param_ioctl, DRM_RENDER_ALLOW),
165 DRM_IOCTL_DEF_DRV(VC4_SET_TILING, vc4_set_tiling_ioctl, DRM_RENDER_ALLOW),
166 DRM_IOCTL_DEF_DRV(VC4_GET_TILING, vc4_get_tiling_ioctl, DRM_RENDER_ALLOW),
167 DRM_IOCTL_DEF_DRV(VC4_LABEL_BO, vc4_label_bo_ioctl, DRM_RENDER_ALLOW),
168 DRM_IOCTL_DEF_DRV(VC4_GEM_MADVISE, vc4_gem_madvise_ioctl, DRM_RENDER_ALLOW),
169 DRM_IOCTL_DEF_DRV(VC4_PERFMON_CREATE, vc4_perfmon_create_ioctl, DRM_RENDER_ALLOW),
170 DRM_IOCTL_DEF_DRV(VC4_PERFMON_DESTROY, vc4_perfmon_destroy_ioctl, DRM_RENDER_ALLOW),
171 DRM_IOCTL_DEF_DRV(VC4_PERFMON_GET_VALUES, vc4_perfmon_get_values_ioctl, DRM_RENDER_ALLOW),
172};
173
174static struct drm_driver vc4_drm_driver = {
175 .driver_features = (DRIVER_MODESET |
176 DRIVER_ATOMIC |
177 DRIVER_GEM |
178 DRIVER_RENDER |
179 DRIVER_PRIME |
180 DRIVER_SYNCOBJ),
181 .open = vc4_open,
182 .postclose = vc4_close,
183 .irq_handler = vc4_irq,
184 .irq_preinstall = vc4_irq_preinstall,
185 .irq_postinstall = vc4_irq_postinstall,
186 .irq_uninstall = vc4_irq_uninstall,
187
188 .get_scanout_position = vc4_crtc_get_scanoutpos,
189 .get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos,
190
191#if defined(CONFIG_DEBUG_FS)
192 .debugfs_init = vc4_debugfs_init,
193#endif
194
195 .gem_create_object = vc4_create_object,
196 .gem_free_object_unlocked = vc4_free_object,
197 .gem_vm_ops = &vc4_vm_ops,
198
199 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
200 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
201 .gem_prime_import = drm_gem_prime_import,
202 .gem_prime_export = vc4_prime_export,
203 .gem_prime_res_obj = vc4_prime_res_obj,
204 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
205 .gem_prime_import_sg_table = vc4_prime_import_sg_table,
206 .gem_prime_vmap = vc4_prime_vmap,
207 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
208 .gem_prime_mmap = vc4_prime_mmap,
209
210 .dumb_create = vc4_dumb_create,
211
212 .ioctls = vc4_drm_ioctls,
213 .num_ioctls = ARRAY_SIZE(vc4_drm_ioctls),
214 .fops = &vc4_drm_fops,
215
216 .name = DRIVER_NAME,
217 .desc = DRIVER_DESC,
218 .date = DRIVER_DATE,
219 .major = DRIVER_MAJOR,
220 .minor = DRIVER_MINOR,
221 .patchlevel = DRIVER_PATCHLEVEL,
222};
223
224static int compare_dev(struct device *dev, void *data)
225{
226 return dev == data;
227}
228
229static void vc4_match_add_drivers(struct device *dev,
230 struct component_match **match,
231 struct platform_driver *const *drivers,
232 int count)
233{
234 int i;
235
236 for (i = 0; i < count; i++) {
237 struct device_driver *drv = &drivers[i]->driver;
238 struct device *p = NULL, *d;
239
240 while ((d = bus_find_device(&platform_bus_type, p, drv,
241 (void *)platform_bus_type.match))) {
242 put_device(p);
243 component_match_add(dev, match, compare_dev, d);
244 p = d;
245 }
246 put_device(p);
247 }
248}
249
250static int vc4_drm_bind(struct device *dev)
251{
252 struct platform_device *pdev = to_platform_device(dev);
253 struct drm_device *drm;
254 struct vc4_dev *vc4;
255 int ret = 0;
256
257 dev->coherent_dma_mask = DMA_BIT_MASK(32);
258
259 vc4 = devm_kzalloc(dev, sizeof(*vc4), GFP_KERNEL);
260 if (!vc4)
261 return -ENOMEM;
262
263 drm = drm_dev_alloc(&vc4_drm_driver, dev);
264 if (IS_ERR(drm))
265 return PTR_ERR(drm);
266 platform_set_drvdata(pdev, drm);
267 vc4->dev = drm;
268 drm->dev_private = vc4;
269
270 ret = vc4_bo_cache_init(drm);
271 if (ret)
272 goto dev_put;
273
274 drm_mode_config_init(drm);
275
276 vc4_gem_init(drm);
277
278 ret = component_bind_all(dev, drm);
279 if (ret)
280 goto gem_destroy;
281
282 drm_fb_helper_remove_conflicting_framebuffers(NULL, "vc4drmfb", false);
283
284 ret = drm_dev_register(drm, 0);
285 if (ret < 0)
286 goto unbind_all;
287
288 vc4_kms_load(drm);
289
290 drm_fbdev_generic_setup(drm, 32);
291
292 return 0;
293
294unbind_all:
295 component_unbind_all(dev, drm);
296gem_destroy:
297 vc4_gem_destroy(drm);
298 vc4_bo_cache_destroy(drm);
299dev_put:
300 drm_dev_put(drm);
301 return ret;
302}
303
304static void vc4_drm_unbind(struct device *dev)
305{
306 struct drm_device *drm = dev_get_drvdata(dev);
307 struct vc4_dev *vc4 = to_vc4_dev(drm);
308
309 drm_dev_unregister(drm);
310
311 drm_atomic_helper_shutdown(drm);
312
313 drm_mode_config_cleanup(drm);
314
315 drm_atomic_private_obj_fini(&vc4->ctm_manager);
316
317 drm_dev_put(drm);
318}
319
320static const struct component_master_ops vc4_drm_ops = {
321 .bind = vc4_drm_bind,
322 .unbind = vc4_drm_unbind,
323};
324
325static struct platform_driver *const component_drivers[] = {
326 &vc4_hdmi_driver,
327 &vc4_vec_driver,
328 &vc4_dpi_driver,
329 &vc4_dsi_driver,
330 &vc4_txp_driver,
331 &vc4_hvs_driver,
332 &vc4_crtc_driver,
333 &vc4_v3d_driver,
334};
335
336static int vc4_platform_drm_probe(struct platform_device *pdev)
337{
338 struct component_match *match = NULL;
339 struct device *dev = &pdev->dev;
340
341 vc4_match_add_drivers(dev, &match,
342 component_drivers, ARRAY_SIZE(component_drivers));
343
344 return component_master_add_with_match(dev, &vc4_drm_ops, match);
345}
346
347static int vc4_platform_drm_remove(struct platform_device *pdev)
348{
349 component_master_del(&pdev->dev, &vc4_drm_ops);
350
351 return 0;
352}
353
354static const struct of_device_id vc4_of_match[] = {
355 { .compatible = "brcm,bcm2835-vc4", },
356 { .compatible = "brcm,cygnus-vc4", },
357 {},
358};
359MODULE_DEVICE_TABLE(of, vc4_of_match);
360
361static struct platform_driver vc4_platform_driver = {
362 .probe = vc4_platform_drm_probe,
363 .remove = vc4_platform_drm_remove,
364 .driver = {
365 .name = "vc4-drm",
366 .of_match_table = vc4_of_match,
367 },
368};
369
370static int __init vc4_drm_register(void)
371{
372 int ret;
373
374 ret = platform_register_drivers(component_drivers,
375 ARRAY_SIZE(component_drivers));
376 if (ret)
377 return ret;
378
379 return platform_driver_register(&vc4_platform_driver);
380}
381
382static void __exit vc4_drm_unregister(void)
383{
384 platform_unregister_drivers(component_drivers,
385 ARRAY_SIZE(component_drivers));
386 platform_driver_unregister(&vc4_platform_driver);
387}
388
389module_init(vc4_drm_register);
390module_exit(vc4_drm_unregister);
391
392MODULE_ALIAS("platform:vc4-drm");
393MODULE_DESCRIPTION("Broadcom VC4 DRM Driver");
394MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
395MODULE_LICENSE("GPL v2");
396
