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23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/mutex.h>
26#include <linux/platform_device.h>
27#include <linux/component.h>
28#include <linux/of_graph.h>
29
30#include <drm/drmP.h>
31#include <drm/drm_atomic.h>
32#include <drm/drm_atomic_helper.h>
33#include <drm/drm_flip_work.h>
34#include <drm/drm_crtc_helper.h>
35#include <drm/drm_plane_helper.h>
36#include <drm/drm_gem_cma_helper.h>
37#include <drm/drm_fb_cma_helper.h>
38#include <drm/drm_rect.h>
39#include <drm/drm_fb_helper.h>
40
41#include "meson_drv.h"
42#include "meson_plane.h"
43#include "meson_crtc.h"
44#include "meson_venc_cvbs.h"
45
46#include "meson_vpp.h"
47#include "meson_viu.h"
48#include "meson_venc.h"
49#include "meson_canvas.h"
50#include "meson_registers.h"
51
52#define DRIVER_NAME "meson"
53#define DRIVER_DESC "Amlogic Meson DRM driver"
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70static void meson_fb_output_poll_changed(struct drm_device *dev)
71{
72 struct meson_drm *priv = dev->dev_private;
73
74 drm_fbdev_cma_hotplug_event(priv->fbdev);
75}
76
77static const struct drm_mode_config_funcs meson_mode_config_funcs = {
78 .output_poll_changed = meson_fb_output_poll_changed,
79 .atomic_check = drm_atomic_helper_check,
80 .atomic_commit = drm_atomic_helper_commit,
81 .fb_create = drm_fb_cma_create,
82};
83
84static irqreturn_t meson_irq(int irq, void *arg)
85{
86 struct drm_device *dev = arg;
87 struct meson_drm *priv = dev->dev_private;
88
89 (void)readl_relaxed(priv->io_base + _REG(VENC_INTFLAG));
90
91 meson_crtc_irq(priv);
92
93 return IRQ_HANDLED;
94}
95
96DEFINE_DRM_GEM_CMA_FOPS(fops);
97
98static struct drm_driver meson_driver = {
99 .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
100 DRIVER_MODESET | DRIVER_PRIME |
101 DRIVER_ATOMIC,
102
103
104 .irq_handler = meson_irq,
105
106
107 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
108 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
109 .gem_prime_import = drm_gem_prime_import,
110 .gem_prime_export = drm_gem_prime_export,
111 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
112 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
113 .gem_prime_vmap = drm_gem_cma_prime_vmap,
114 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
115 .gem_prime_mmap = drm_gem_cma_prime_mmap,
116
117
118 .dumb_create = drm_gem_cma_dumb_create,
119 .gem_free_object_unlocked = drm_gem_cma_free_object,
120 .gem_vm_ops = &drm_gem_cma_vm_ops,
121
122
123 .fops = &fops,
124 .name = DRIVER_NAME,
125 .desc = DRIVER_DESC,
126 .date = "20161109",
127 .major = 1,
128 .minor = 0,
129};
130
131static bool meson_vpu_has_available_connectors(struct device *dev)
132{
133 struct device_node *ep, *remote;
134
135
136 for_each_endpoint_of_node(dev->of_node, ep) {
137
138 remote = of_graph_get_remote_port(ep);
139 if (remote)
140 return true;
141 }
142
143 return false;
144}
145
146static struct regmap_config meson_regmap_config = {
147 .reg_bits = 32,
148 .val_bits = 32,
149 .reg_stride = 4,
150 .max_register = 0x1000,
151};
152
153static int meson_drv_bind_master(struct device *dev, bool has_components)
154{
155 struct platform_device *pdev = to_platform_device(dev);
156 struct meson_drm *priv;
157 struct drm_device *drm;
158 struct resource *res;
159 void __iomem *regs;
160 int ret;
161
162
163 if (!meson_vpu_has_available_connectors(dev)) {
164 dev_err(dev, "No output connector available\n");
165 return -ENODEV;
166 }
167
168 drm = drm_dev_alloc(&meson_driver, dev);
169 if (IS_ERR(drm))
170 return PTR_ERR(drm);
171
172 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
173 if (!priv) {
174 ret = -ENOMEM;
175 goto free_drm;
176 }
177 drm->dev_private = priv;
178 priv->drm = drm;
179 priv->dev = dev;
180
181 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu");
182 regs = devm_ioremap_resource(dev, res);
183 if (IS_ERR(regs))
184 return PTR_ERR(regs);
185
186 priv->io_base = regs;
187
188 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hhi");
189
190 regs = devm_ioremap(dev, res->start, resource_size(res));
191 if (!regs)
192 return -EADDRNOTAVAIL;
193
194 priv->hhi = devm_regmap_init_mmio(dev, regs,
195 &meson_regmap_config);
196 if (IS_ERR(priv->hhi)) {
197 dev_err(&pdev->dev, "Couldn't create the HHI regmap\n");
198 return PTR_ERR(priv->hhi);
199 }
200
201 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc");
202
203 regs = devm_ioremap(dev, res->start, resource_size(res));
204 if (!regs)
205 return -EADDRNOTAVAIL;
206
207 priv->dmc = devm_regmap_init_mmio(dev, regs,
208 &meson_regmap_config);
209 if (IS_ERR(priv->dmc)) {
210 dev_err(&pdev->dev, "Couldn't create the DMC regmap\n");
211 return PTR_ERR(priv->dmc);
212 }
213
214 priv->vsync_irq = platform_get_irq(pdev, 0);
215
216 drm_vblank_init(drm, 1);
217 drm_mode_config_init(drm);
218 drm->mode_config.max_width = 3840;
219 drm->mode_config.max_height = 2160;
220 drm->mode_config.funcs = &meson_mode_config_funcs;
221
222
223
224 meson_venc_init(priv);
225 meson_vpp_init(priv);
226 meson_viu_init(priv);
227
228
229
230 ret = meson_venc_cvbs_create(priv);
231 if (ret)
232 goto free_drm;
233
234 if (has_components) {
235 ret = component_bind_all(drm->dev, drm);
236 if (ret) {
237 dev_err(drm->dev, "Couldn't bind all components\n");
238 goto free_drm;
239 }
240 }
241
242 ret = meson_plane_create(priv);
243 if (ret)
244 goto free_drm;
245
246 ret = meson_crtc_create(priv);
247 if (ret)
248 goto free_drm;
249
250 ret = drm_irq_install(drm, priv->vsync_irq);
251 if (ret)
252 goto free_drm;
253
254 drm_mode_config_reset(drm);
255
256 priv->fbdev = drm_fbdev_cma_init(drm, 32,
257 drm->mode_config.num_connector);
258 if (IS_ERR(priv->fbdev)) {
259 ret = PTR_ERR(priv->fbdev);
260 goto free_drm;
261 }
262
263 drm_kms_helper_poll_init(drm);
264
265 platform_set_drvdata(pdev, priv);
266
267 ret = drm_dev_register(drm, 0);
268 if (ret)
269 goto free_drm;
270
271 return 0;
272
273free_drm:
274 drm_dev_unref(drm);
275
276 return ret;
277}
278
279static int meson_drv_bind(struct device *dev)
280{
281 return meson_drv_bind_master(dev, true);
282}
283
284static void meson_drv_unbind(struct device *dev)
285{
286 struct drm_device *drm = dev_get_drvdata(dev);
287 struct meson_drm *priv = drm->dev_private;
288
289 drm_dev_unregister(drm);
290 drm_kms_helper_poll_fini(drm);
291 drm_fbdev_cma_fini(priv->fbdev);
292 drm_mode_config_cleanup(drm);
293 drm_dev_unref(drm);
294
295}
296
297static const struct component_master_ops meson_drv_master_ops = {
298 .bind = meson_drv_bind,
299 .unbind = meson_drv_unbind,
300};
301
302static int compare_of(struct device *dev, void *data)
303{
304 DRM_DEBUG_DRIVER("Comparing of node %pOF with %pOF\n",
305 dev->of_node, data);
306
307 return dev->of_node == data;
308}
309
310
311static const struct of_device_id connectors_match[] = {
312 { .compatible = "composite-video-connector" },
313 { .compatible = "svideo-connector" },
314 { .compatible = "hdmi-connector" },
315 { .compatible = "dvi-connector" },
316 {}
317};
318
319static int meson_probe_remote(struct platform_device *pdev,
320 struct component_match **match,
321 struct device_node *parent,
322 struct device_node *remote)
323{
324 struct device_node *ep, *remote_node;
325 int count = 1;
326
327
328 if (of_match_node(connectors_match, remote))
329 return 1;
330
331 component_match_add(&pdev->dev, match, compare_of, remote);
332
333 for_each_endpoint_of_node(remote, ep) {
334 remote_node = of_graph_get_remote_port_parent(ep);
335 if (!remote_node ||
336 remote_node == parent ||
337 !of_device_is_available(remote_node))
338 continue;
339
340 count += meson_probe_remote(pdev, match, remote, remote_node);
341
342 of_node_put(remote_node);
343 }
344
345 return count;
346}
347
348static int meson_drv_probe(struct platform_device *pdev)
349{
350 struct component_match *match = NULL;
351 struct device_node *np = pdev->dev.of_node;
352 struct device_node *ep, *remote;
353 int count = 0;
354
355 for_each_endpoint_of_node(np, ep) {
356 remote = of_graph_get_remote_port_parent(ep);
357 if (!remote || !of_device_is_available(remote))
358 continue;
359
360 count += meson_probe_remote(pdev, &match, np, remote);
361 }
362
363 if (count && !match)
364 return meson_drv_bind_master(&pdev->dev, false);
365
366
367 if (count) {
368 dev_info(&pdev->dev, "Queued %d outputs on vpu\n", count);
369
370 return component_master_add_with_match(&pdev->dev,
371 &meson_drv_master_ops,
372 match);
373 }
374
375
376 return 0;
377};
378
379static const struct of_device_id dt_match[] = {
380 { .compatible = "amlogic,meson-gxbb-vpu" },
381 { .compatible = "amlogic,meson-gxl-vpu" },
382 { .compatible = "amlogic,meson-gxm-vpu" },
383 {}
384};
385MODULE_DEVICE_TABLE(of, dt_match);
386
387static struct platform_driver meson_drm_platform_driver = {
388 .probe = meson_drv_probe,
389 .driver = {
390 .name = "meson-drm",
391 .of_match_table = dt_match,
392 },
393};
394
395module_platform_driver(meson_drm_platform_driver);
396
397MODULE_AUTHOR("Jasper St. Pierre <jstpierre@mecheye.net>");
398MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
399MODULE_DESCRIPTION(DRIVER_DESC);
400MODULE_LICENSE("GPL");
401
