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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
37#include "uapi/drm/vc4_drm.h"
38#include "vc4_drv.h"
39#include "vc4_regs.h"
40
41#define DRIVER_NAME "vc4"
42#define DRIVER_DESC "Broadcom VC4 graphics"
43#define DRIVER_DATE "20140616"
44#define DRIVER_MAJOR 0
45#define DRIVER_MINOR 0
46#define DRIVER_PATCHLEVEL 0
47
48
49void __iomem *vc4_ioremap_regs(struct platform_device *dev, int index)
50{
51 struct resource *res;
52 void __iomem *map;
53
54 res = platform_get_resource(dev, IORESOURCE_MEM, index);
55 map = devm_ioremap_resource(&dev->dev, res);
56 if (IS_ERR(map)) {
57 DRM_ERROR("Failed to map registers: %ld\n", PTR_ERR(map));
58 return map;
59 }
60
61 return map;
62}
63
64static int vc4_get_param_ioctl(struct drm_device *dev, void *data,
65 struct drm_file *file_priv)
66{
67 struct vc4_dev *vc4 = to_vc4_dev(dev);
68 struct drm_vc4_get_param *args = data;
69 int ret;
70
71 if (args->pad != 0)
72 return -EINVAL;
73
74 switch (args->param) {
75 case DRM_VC4_PARAM_V3D_IDENT0:
76 ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
77 if (ret < 0)
78 return ret;
79 args->value = V3D_READ(V3D_IDENT0);
80 pm_runtime_mark_last_busy(&vc4->v3d->pdev->dev);
81 pm_runtime_put_autosuspend(&vc4->v3d->pdev->dev);
82 break;
83 case DRM_VC4_PARAM_V3D_IDENT1:
84 ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
85 if (ret < 0)
86 return ret;
87 args->value = V3D_READ(V3D_IDENT1);
88 pm_runtime_mark_last_busy(&vc4->v3d->pdev->dev);
89 pm_runtime_put_autosuspend(&vc4->v3d->pdev->dev);
90 break;
91 case DRM_VC4_PARAM_V3D_IDENT2:
92 ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev);
93 if (ret < 0)
94 return ret;
95 args->value = V3D_READ(V3D_IDENT2);
96 pm_runtime_mark_last_busy(&vc4->v3d->pdev->dev);
97 pm_runtime_put_autosuspend(&vc4->v3d->pdev->dev);
98 break;
99 case DRM_VC4_PARAM_SUPPORTS_BRANCHES:
100 case DRM_VC4_PARAM_SUPPORTS_ETC1:
101 case DRM_VC4_PARAM_SUPPORTS_THREADED_FS:
102 case DRM_VC4_PARAM_SUPPORTS_FIXED_RCL_ORDER:
103 case DRM_VC4_PARAM_SUPPORTS_MADVISE:
104 args->value = true;
105 break;
106 default:
107 DRM_DEBUG("Unknown parameter %d\n", args->param);
108 return -EINVAL;
109 }
110
111 return 0;
112}
113
114static const struct vm_operations_struct vc4_vm_ops = {
115 .fault = vc4_fault,
116 .open = drm_gem_vm_open,
117 .close = drm_gem_vm_close,
118};
119
120static const struct file_operations vc4_drm_fops = {
121 .owner = THIS_MODULE,
122 .open = drm_open,
123 .release = drm_release,
124 .unlocked_ioctl = drm_ioctl,
125 .mmap = vc4_mmap,
126 .poll = drm_poll,
127 .read = drm_read,
128 .compat_ioctl = drm_compat_ioctl,
129 .llseek = noop_llseek,
130};
131
132static const struct drm_ioctl_desc vc4_drm_ioctls[] = {
133 DRM_IOCTL_DEF_DRV(VC4_SUBMIT_CL, vc4_submit_cl_ioctl, DRM_RENDER_ALLOW),
134 DRM_IOCTL_DEF_DRV(VC4_WAIT_SEQNO, vc4_wait_seqno_ioctl, DRM_RENDER_ALLOW),
135 DRM_IOCTL_DEF_DRV(VC4_WAIT_BO, vc4_wait_bo_ioctl, DRM_RENDER_ALLOW),
136 DRM_IOCTL_DEF_DRV(VC4_CREATE_BO, vc4_create_bo_ioctl, DRM_RENDER_ALLOW),
137 DRM_IOCTL_DEF_DRV(VC4_MMAP_BO, vc4_mmap_bo_ioctl, DRM_RENDER_ALLOW),
138 DRM_IOCTL_DEF_DRV(VC4_CREATE_SHADER_BO, vc4_create_shader_bo_ioctl, DRM_RENDER_ALLOW),
139 DRM_IOCTL_DEF_DRV(VC4_GET_HANG_STATE, vc4_get_hang_state_ioctl,
140 DRM_ROOT_ONLY),
141 DRM_IOCTL_DEF_DRV(VC4_GET_PARAM, vc4_get_param_ioctl, DRM_RENDER_ALLOW),
142 DRM_IOCTL_DEF_DRV(VC4_SET_TILING, vc4_set_tiling_ioctl, DRM_RENDER_ALLOW),
143 DRM_IOCTL_DEF_DRV(VC4_GET_TILING, vc4_get_tiling_ioctl, DRM_RENDER_ALLOW),
144 DRM_IOCTL_DEF_DRV(VC4_LABEL_BO, vc4_label_bo_ioctl, DRM_RENDER_ALLOW),
145 DRM_IOCTL_DEF_DRV(VC4_GEM_MADVISE, vc4_gem_madvise_ioctl, DRM_RENDER_ALLOW),
146};
147
148static struct drm_driver vc4_drm_driver = {
149 .driver_features = (DRIVER_MODESET |
150 DRIVER_ATOMIC |
151 DRIVER_GEM |
152 DRIVER_HAVE_IRQ |
153 DRIVER_RENDER |
154 DRIVER_PRIME),
155 .lastclose = drm_fb_helper_lastclose,
156 .irq_handler = vc4_irq,
157 .irq_preinstall = vc4_irq_preinstall,
158 .irq_postinstall = vc4_irq_postinstall,
159 .irq_uninstall = vc4_irq_uninstall,
160
161 .get_scanout_position = vc4_crtc_get_scanoutpos,
162 .get_vblank_timestamp = drm_calc_vbltimestamp_from_scanoutpos,
163
164#if defined(CONFIG_DEBUG_FS)
165 .debugfs_init = vc4_debugfs_init,
166#endif
167
168 .gem_create_object = vc4_create_object,
169 .gem_free_object_unlocked = vc4_free_object,
170 .gem_vm_ops = &vc4_vm_ops,
171
172 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
173 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
174 .gem_prime_import = drm_gem_prime_import,
175 .gem_prime_export = vc4_prime_export,
176 .gem_prime_res_obj = vc4_prime_res_obj,
177 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
178 .gem_prime_import_sg_table = vc4_prime_import_sg_table,
179 .gem_prime_vmap = vc4_prime_vmap,
180 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
181 .gem_prime_mmap = vc4_prime_mmap,
182
183 .dumb_create = vc4_dumb_create,
184
185 .ioctls = vc4_drm_ioctls,
186 .num_ioctls = ARRAY_SIZE(vc4_drm_ioctls),
187 .fops = &vc4_drm_fops,
188
189 .name = DRIVER_NAME,
190 .desc = DRIVER_DESC,
191 .date = DRIVER_DATE,
192 .major = DRIVER_MAJOR,
193 .minor = DRIVER_MINOR,
194 .patchlevel = DRIVER_PATCHLEVEL,
195};
196
197static int compare_dev(struct device *dev, void *data)
198{
199 return dev == data;
200}
201
202static void vc4_match_add_drivers(struct device *dev,
203 struct component_match **match,
204 struct platform_driver *const *drivers,
205 int count)
206{
207 int i;
208
209 for (i = 0; i < count; i++) {
210 struct device_driver *drv = &drivers[i]->driver;
211 struct device *p = NULL, *d;
212
213 while ((d = bus_find_device(&platform_bus_type, p, drv,
214 (void *)platform_bus_type.match))) {
215 put_device(p);
216 component_match_add(dev, match, compare_dev, d);
217 p = d;
218 }
219 put_device(p);
220 }
221}
222
223static void vc4_kick_out_firmware_fb(void)
224{
225 struct apertures_struct *ap;
226
227 ap = alloc_apertures(1);
228 if (!ap)
229 return;
230
231
232
233
234 ap->ranges[0].base = 0;
235 ap->ranges[0].size = ~0;
236
237 drm_fb_helper_remove_conflicting_framebuffers(ap, "vc4drmfb", false);
238 kfree(ap);
239}
240
241static int vc4_drm_bind(struct device *dev)
242{
243 struct platform_device *pdev = to_platform_device(dev);
244 struct drm_device *drm;
245 struct vc4_dev *vc4;
246 int ret = 0;
247
248 dev->coherent_dma_mask = DMA_BIT_MASK(32);
249
250 vc4 = devm_kzalloc(dev, sizeof(*vc4), GFP_KERNEL);
251 if (!vc4)
252 return -ENOMEM;
253
254 drm = drm_dev_alloc(&vc4_drm_driver, dev);
255 if (IS_ERR(drm))
256 return PTR_ERR(drm);
257 platform_set_drvdata(pdev, drm);
258 vc4->dev = drm;
259 drm->dev_private = vc4;
260
261 ret = vc4_bo_cache_init(drm);
262 if (ret)
263 goto dev_unref;
264
265 drm_mode_config_init(drm);
266
267 vc4_gem_init(drm);
268
269 ret = component_bind_all(dev, drm);
270 if (ret)
271 goto gem_destroy;
272
273 vc4_kick_out_firmware_fb();
274
275 ret = drm_dev_register(drm, 0);
276 if (ret < 0)
277 goto unbind_all;
278
279 vc4_kms_load(drm);
280
281 return 0;
282
283unbind_all:
284 component_unbind_all(dev, drm);
285gem_destroy:
286 vc4_gem_destroy(drm);
287 vc4_bo_cache_destroy(drm);
288dev_unref:
289 drm_dev_unref(drm);
290 return ret;
291}
292
293static void vc4_drm_unbind(struct device *dev)
294{
295 struct platform_device *pdev = to_platform_device(dev);
296 struct drm_device *drm = platform_get_drvdata(pdev);
297
298 drm_dev_unregister(drm);
299
300 drm_fb_cma_fbdev_fini(drm);
301
302 drm_mode_config_cleanup(drm);
303
304 drm_dev_unref(drm);
305}
306
307static const struct component_master_ops vc4_drm_ops = {
308 .bind = vc4_drm_bind,
309 .unbind = vc4_drm_unbind,
310};
311
312static struct platform_driver *const component_drivers[] = {
313 &vc4_hdmi_driver,
314 &vc4_vec_driver,
315 &vc4_dpi_driver,
316 &vc4_dsi_driver,
317 &vc4_hvs_driver,
318 &vc4_crtc_driver,
319 &vc4_v3d_driver,
320};
321
322static int vc4_platform_drm_probe(struct platform_device *pdev)
323{
324 struct component_match *match = NULL;
325 struct device *dev = &pdev->dev;
326
327 vc4_match_add_drivers(dev, &match,
328 component_drivers, ARRAY_SIZE(component_drivers));
329
330 return component_master_add_with_match(dev, &vc4_drm_ops, match);
331}
332
333static int vc4_platform_drm_remove(struct platform_device *pdev)
334{
335 component_master_del(&pdev->dev, &vc4_drm_ops);
336
337 return 0;
338}
339
340static const struct of_device_id vc4_of_match[] = {
341 { .compatible = "brcm,bcm2835-vc4", },
342 { .compatible = "brcm,cygnus-vc4", },
343 {},
344};
345MODULE_DEVICE_TABLE(of, vc4_of_match);
346
347static struct platform_driver vc4_platform_driver = {
348 .probe = vc4_platform_drm_probe,
349 .remove = vc4_platform_drm_remove,
350 .driver = {
351 .name = "vc4-drm",
352 .of_match_table = vc4_of_match,
353 },
354};
355
356static int __init vc4_drm_register(void)
357{
358 int ret;
359
360 ret = platform_register_drivers(component_drivers,
361 ARRAY_SIZE(component_drivers));
362 if (ret)
363 return ret;
364
365 return platform_driver_register(&vc4_platform_driver);
366}
367
368static void __exit vc4_drm_unregister(void)
369{
370 platform_unregister_drivers(component_drivers,
371 ARRAY_SIZE(component_drivers));
372 platform_driver_unregister(&vc4_platform_driver);
373}
374
375module_init(vc4_drm_register);
376module_exit(vc4_drm_unregister);
377
378MODULE_ALIAS("platform:vc4-drm");
379MODULE_DESCRIPTION("Broadcom VC4 DRM Driver");
380MODULE_AUTHOR("Eric Anholt <eric@anholt.net>");
381MODULE_LICENSE("GPL v2");
382
