This source file includes following definitions.
- imx_drm_connector_destroy
- imx_drm_encoder_destroy
- imx_drm_atomic_check
- imx_drm_atomic_commit_tail
- imx_drm_encoder_parse_of
- compare_of
- imx_drm_bind
- imx_drm_unbind
- imx_drm_platform_probe
- imx_drm_platform_remove
- imx_drm_suspend
- imx_drm_resume
- imx_drm_init
- imx_drm_exit
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8 #include <linux/component.h>
9 #include <linux/device.h>
10 #include <linux/dma-buf.h>
11 #include <linux/module.h>
12 #include <linux/platform_device.h>
13
14 #include <video/imx-ipu-v3.h>
15
16 #include <drm/drm_atomic.h>
17 #include <drm/drm_atomic_helper.h>
18 #include <drm/drm_drv.h>
19 #include <drm/drm_fb_cma_helper.h>
20 #include <drm/drm_fb_helper.h>
21 #include <drm/drm_gem_cma_helper.h>
22 #include <drm/drm_gem_framebuffer_helper.h>
23 #include <drm/drm_of.h>
24 #include <drm/drm_plane_helper.h>
25 #include <drm/drm_probe_helper.h>
26 #include <drm/drm_vblank.h>
27
28 #include "imx-drm.h"
29 #include "ipuv3-plane.h"
30
31 #define MAX_CRTC 4
32
33 static int legacyfb_depth = 16;
34 module_param(legacyfb_depth, int, 0444);
35
36 DEFINE_DRM_GEM_CMA_FOPS(imx_drm_driver_fops);
37
38 void imx_drm_connector_destroy(struct drm_connector *connector)
39 {
40 drm_connector_unregister(connector);
41 drm_connector_cleanup(connector);
42 }
43 EXPORT_SYMBOL_GPL(imx_drm_connector_destroy);
44
45 void imx_drm_encoder_destroy(struct drm_encoder *encoder)
46 {
47 drm_encoder_cleanup(encoder);
48 }
49 EXPORT_SYMBOL_GPL(imx_drm_encoder_destroy);
50
51 static int imx_drm_atomic_check(struct drm_device *dev,
52 struct drm_atomic_state *state)
53 {
54 int ret;
55
56 ret = drm_atomic_helper_check(dev, state);
57 if (ret)
58 return ret;
59
60
61
62
63
64 ret = drm_atomic_helper_check_modeset(dev, state);
65 if (ret)
66 return ret;
67
68
69 ret = ipu_planes_assign_pre(dev, state);
70 if (ret)
71 return ret;
72
73 return ret;
74 }
75
76 static const struct drm_mode_config_funcs imx_drm_mode_config_funcs = {
77 .fb_create = drm_gem_fb_create,
78 .atomic_check = imx_drm_atomic_check,
79 .atomic_commit = drm_atomic_helper_commit,
80 };
81
82 static void imx_drm_atomic_commit_tail(struct drm_atomic_state *state)
83 {
84 struct drm_device *dev = state->dev;
85 struct drm_plane *plane;
86 struct drm_plane_state *old_plane_state, *new_plane_state;
87 bool plane_disabling = false;
88 int i;
89
90 drm_atomic_helper_commit_modeset_disables(dev, state);
91
92 drm_atomic_helper_commit_planes(dev, state,
93 DRM_PLANE_COMMIT_ACTIVE_ONLY |
94 DRM_PLANE_COMMIT_NO_DISABLE_AFTER_MODESET);
95
96 drm_atomic_helper_commit_modeset_enables(dev, state);
97
98 for_each_oldnew_plane_in_state(state, plane, old_plane_state, new_plane_state, i) {
99 if (drm_atomic_plane_disabling(old_plane_state, new_plane_state))
100 plane_disabling = true;
101 }
102
103
104
105
106
107
108
109
110 drm_atomic_helper_wait_for_flip_done(dev, state);
111
112 if (plane_disabling) {
113 for_each_old_plane_in_state(state, plane, old_plane_state, i)
114 ipu_plane_disable_deferred(plane);
115
116 }
117
118 drm_atomic_helper_commit_hw_done(state);
119 }
120
121 static const struct drm_mode_config_helper_funcs imx_drm_mode_config_helpers = {
122 .atomic_commit_tail = imx_drm_atomic_commit_tail,
123 };
124
125
126 int imx_drm_encoder_parse_of(struct drm_device *drm,
127 struct drm_encoder *encoder, struct device_node *np)
128 {
129 uint32_t crtc_mask = drm_of_find_possible_crtcs(drm, np);
130
131
132
133
134
135
136
137 if (crtc_mask == 0)
138 return -EPROBE_DEFER;
139
140 encoder->possible_crtcs = crtc_mask;
141
142
143 encoder->possible_clones = ~0;
144
145 return 0;
146 }
147 EXPORT_SYMBOL_GPL(imx_drm_encoder_parse_of);
148
149 static const struct drm_ioctl_desc imx_drm_ioctls[] = {
150
151 };
152
153 static struct drm_driver imx_drm_driver = {
154 .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC,
155 .gem_free_object_unlocked = drm_gem_cma_free_object,
156 .gem_vm_ops = &drm_gem_cma_vm_ops,
157 .dumb_create = drm_gem_cma_dumb_create,
158
159 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
160 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
161 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
162 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
163 .gem_prime_vmap = drm_gem_cma_prime_vmap,
164 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
165 .gem_prime_mmap = drm_gem_cma_prime_mmap,
166 .ioctls = imx_drm_ioctls,
167 .num_ioctls = ARRAY_SIZE(imx_drm_ioctls),
168 .fops = &imx_drm_driver_fops,
169 .name = "imx-drm",
170 .desc = "i.MX DRM graphics",
171 .date = "20120507",
172 .major = 1,
173 .minor = 0,
174 .patchlevel = 0,
175 };
176
177 static int compare_of(struct device *dev, void *data)
178 {
179 struct device_node *np = data;
180
181
182 if (strcmp(dev->driver->name, "imx-ipuv3-crtc") == 0) {
183 struct ipu_client_platformdata *pdata = dev->platform_data;
184
185 return pdata->of_node == np;
186 }
187
188
189 if (of_node_name_eq(np, "lvds-channel")) {
190 np = of_get_parent(np);
191 of_node_put(np);
192 }
193
194 return dev->of_node == np;
195 }
196
197 static int imx_drm_bind(struct device *dev)
198 {
199 struct drm_device *drm;
200 int ret;
201
202 drm = drm_dev_alloc(&imx_drm_driver, dev);
203 if (IS_ERR(drm))
204 return PTR_ERR(drm);
205
206
207
208
209
210
211
212
213
214
215 drm->irq_enabled = true;
216
217
218
219
220
221
222 drm->mode_config.min_width = 1;
223 drm->mode_config.min_height = 1;
224 drm->mode_config.max_width = 4096;
225 drm->mode_config.max_height = 4096;
226 drm->mode_config.funcs = &imx_drm_mode_config_funcs;
227 drm->mode_config.helper_private = &imx_drm_mode_config_helpers;
228 drm->mode_config.allow_fb_modifiers = true;
229 drm->mode_config.normalize_zpos = true;
230
231 drm_mode_config_init(drm);
232
233 ret = drm_vblank_init(drm, MAX_CRTC);
234 if (ret)
235 goto err_kms;
236
237 dev_set_drvdata(dev, drm);
238
239
240 ret = component_bind_all(dev, drm);
241 if (ret)
242 goto err_kms;
243
244 drm_mode_config_reset(drm);
245
246
247
248
249
250
251 if (legacyfb_depth != 16 && legacyfb_depth != 32) {
252 dev_warn(dev, "Invalid legacyfb_depth. Defaulting to 16bpp\n");
253 legacyfb_depth = 16;
254 }
255
256 drm_kms_helper_poll_init(drm);
257
258 ret = drm_dev_register(drm, 0);
259 if (ret)
260 goto err_poll_fini;
261
262 drm_fbdev_generic_setup(drm, legacyfb_depth);
263
264 return 0;
265
266 err_poll_fini:
267 drm_kms_helper_poll_fini(drm);
268 component_unbind_all(drm->dev, drm);
269 err_kms:
270 drm_mode_config_cleanup(drm);
271 drm_dev_put(drm);
272
273 return ret;
274 }
275
276 static void imx_drm_unbind(struct device *dev)
277 {
278 struct drm_device *drm = dev_get_drvdata(dev);
279
280 drm_dev_unregister(drm);
281
282 drm_kms_helper_poll_fini(drm);
283
284 drm_mode_config_cleanup(drm);
285
286 component_unbind_all(drm->dev, drm);
287 dev_set_drvdata(dev, NULL);
288
289 drm_dev_put(drm);
290 }
291
292 static const struct component_master_ops imx_drm_ops = {
293 .bind = imx_drm_bind,
294 .unbind = imx_drm_unbind,
295 };
296
297 static int imx_drm_platform_probe(struct platform_device *pdev)
298 {
299 int ret = drm_of_component_probe(&pdev->dev, compare_of, &imx_drm_ops);
300
301 if (!ret)
302 ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
303
304 return ret;
305 }
306
307 static int imx_drm_platform_remove(struct platform_device *pdev)
308 {
309 component_master_del(&pdev->dev, &imx_drm_ops);
310 return 0;
311 }
312
313 #ifdef CONFIG_PM_SLEEP
314 static int imx_drm_suspend(struct device *dev)
315 {
316 struct drm_device *drm_dev = dev_get_drvdata(dev);
317
318 return drm_mode_config_helper_suspend(drm_dev);
319 }
320
321 static int imx_drm_resume(struct device *dev)
322 {
323 struct drm_device *drm_dev = dev_get_drvdata(dev);
324
325 return drm_mode_config_helper_resume(drm_dev);
326 }
327 #endif
328
329 static SIMPLE_DEV_PM_OPS(imx_drm_pm_ops, imx_drm_suspend, imx_drm_resume);
330
331 static const struct of_device_id imx_drm_dt_ids[] = {
332 { .compatible = "fsl,imx-display-subsystem", },
333 { },
334 };
335 MODULE_DEVICE_TABLE(of, imx_drm_dt_ids);
336
337 static struct platform_driver imx_drm_pdrv = {
338 .probe = imx_drm_platform_probe,
339 .remove = imx_drm_platform_remove,
340 .driver = {
341 .name = "imx-drm",
342 .pm = &imx_drm_pm_ops,
343 .of_match_table = imx_drm_dt_ids,
344 },
345 };
346
347 static struct platform_driver * const drivers[] = {
348 &imx_drm_pdrv,
349 &ipu_drm_driver,
350 };
351
352 static int __init imx_drm_init(void)
353 {
354 return platform_register_drivers(drivers, ARRAY_SIZE(drivers));
355 }
356 module_init(imx_drm_init);
357
358 static void __exit imx_drm_exit(void)
359 {
360 platform_unregister_drivers(drivers, ARRAY_SIZE(drivers));
361 }
362 module_exit(imx_drm_exit);
363
364 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
365 MODULE_DESCRIPTION("i.MX drm driver core");
366 MODULE_LICENSE("GPL");