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1/*
2 * Copyright (C) 2016 BayLibre, SAS
3 * Author: Neil Armstrong <narmstrong@baylibre.com>
4 * Copyright (C) 2014 Endless Mobile
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of the
9 * License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 *
19 * Written by:
20 * Jasper St. Pierre <jstpierre@mecheye.net>
21 */
22
23#include <linux/kernel.h>
24#include <linux/module.h>
25#include <linux/mutex.h>
26#include <linux/platform_device.h>
27#include <linux/of_graph.h>
28
29#include <drm/drmP.h>
30#include <drm/drm_atomic.h>
31#include <drm/drm_atomic_helper.h>
32#include <drm/drm_flip_work.h>
33#include <drm/drm_crtc_helper.h>
34#include <drm/drm_plane_helper.h>
35#include <drm/drm_gem_cma_helper.h>
36#include <drm/drm_fb_cma_helper.h>
37#include <drm/drm_rect.h>
38#include <drm/drm_fb_helper.h>
39
40#include "meson_drv.h"
41#include "meson_plane.h"
42#include "meson_crtc.h"
43#include "meson_venc_cvbs.h"
44
45#include "meson_vpp.h"
46#include "meson_viu.h"
47#include "meson_venc.h"
48#include "meson_canvas.h"
49#include "meson_registers.h"
50
51#define DRIVER_NAME "meson"
52#define DRIVER_DESC "Amlogic Meson DRM driver"
53
54/*
55 * Video Processing Unit
56 *
57 * VPU Handles the Global Video Processing, it includes management of the
58 * clocks gates, blocks reset lines and power domains.
59 *
60 * What is missing :
61 * - Full reset of entire video processing HW blocks
62 * - Scaling and setup of the VPU clock
63 * - Bus clock gates
64 * - Powering up video processing HW blocks
65 * - Powering Up HDMI controller and PHY
66 */
67
68static void meson_fb_output_poll_changed(struct drm_device *dev)
69{
70 struct meson_drm *priv = dev->dev_private;
71
72 drm_fbdev_cma_hotplug_event(priv->fbdev);
73}
74
75static const struct drm_mode_config_funcs meson_mode_config_funcs = {
76 .output_poll_changed = meson_fb_output_poll_changed,
77 .atomic_check = drm_atomic_helper_check,
78 .atomic_commit = drm_atomic_helper_commit,
79 .fb_create = drm_fb_cma_create,
80};
81
82static int meson_enable_vblank(struct drm_device *dev, unsigned int crtc)
83{
84 struct meson_drm *priv = dev->dev_private;
85
86 meson_venc_enable_vsync(priv);
87
88 return 0;
89}
90
91static void meson_disable_vblank(struct drm_device *dev, unsigned int crtc)
92{
93 struct meson_drm *priv = dev->dev_private;
94
95 meson_venc_disable_vsync(priv);
96}
97
98static irqreturn_t meson_irq(int irq, void *arg)
99{
100 struct drm_device *dev = arg;
101 struct meson_drm *priv = dev->dev_private;
102
103 (void)readl_relaxed(priv->io_base + _REG(VENC_INTFLAG));
104
105 meson_crtc_irq(priv);
106
107 return IRQ_HANDLED;
108}
109
110static const struct file_operations fops = {
111 .owner = THIS_MODULE,
112 .open = drm_open,
113 .release = drm_release,
114 .unlocked_ioctl = drm_ioctl,
115#ifdef CONFIG_COMPAT
116 .compat_ioctl = drm_compat_ioctl,
117#endif
118 .poll = drm_poll,
119 .read = drm_read,
120 .llseek = no_llseek,
121 .mmap = drm_gem_cma_mmap,
122};
123
124static struct drm_driver meson_driver = {
125 .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
126 DRIVER_MODESET | DRIVER_PRIME |
127 DRIVER_ATOMIC,
128
129 /* Vblank */
130 .enable_vblank = meson_enable_vblank,
131 .disable_vblank = meson_disable_vblank,
132 .get_vblank_counter = drm_vblank_no_hw_counter,
133
134 /* IRQ */
135 .irq_handler = meson_irq,
136
137 /* PRIME Ops */
138 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
139 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
140 .gem_prime_import = drm_gem_prime_import,
141 .gem_prime_export = drm_gem_prime_export,
142 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
143 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
144 .gem_prime_vmap = drm_gem_cma_prime_vmap,
145 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
146 .gem_prime_mmap = drm_gem_cma_prime_mmap,
147
148 /* GEM Ops */
149 .dumb_create = drm_gem_cma_dumb_create,
150 .dumb_destroy = drm_gem_dumb_destroy,
151 .dumb_map_offset = drm_gem_cma_dumb_map_offset,
152 .gem_free_object_unlocked = drm_gem_cma_free_object,
153 .gem_vm_ops = &drm_gem_cma_vm_ops,
154
155 /* Misc */
156 .fops = &fops,
157 .name = DRIVER_NAME,
158 .desc = DRIVER_DESC,
159 .date = "20161109",
160 .major = 1,
161 .minor = 0,
162};
163
164static bool meson_vpu_has_available_connectors(struct device *dev)
165{
166 struct device_node *ep, *remote;
167
168 /* Parses each endpoint and check if remote exists */
169 for_each_endpoint_of_node(dev->of_node, ep) {
170 /* If the endpoint node exists, consider it enabled */
171 remote = of_graph_get_remote_port(ep);
172 if (remote)
173 return true;
174 }
175
176 return false;
177}
178
179static struct regmap_config meson_regmap_config = {
180 .reg_bits = 32,
181 .val_bits = 32,
182 .reg_stride = 4,
183 .max_register = 0x1000,
184};
185
186static int meson_drv_probe(struct platform_device *pdev)
187{
188 struct device *dev = &pdev->dev;
189 struct meson_drm *priv;
190 struct drm_device *drm;
191 struct resource *res;
192 void __iomem *regs;
193 int ret;
194
195 /* Checks if an output connector is available */
196 if (!meson_vpu_has_available_connectors(dev)) {
197 dev_err(dev, "No output connector available\n");
198 return -ENODEV;
199 }
200
201 drm = drm_dev_alloc(&meson_driver, dev);
202 if (IS_ERR(drm))
203 return PTR_ERR(drm);
204
205 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
206 if (!priv) {
207 ret = -ENOMEM;
208 goto free_drm;
209 }
210 drm->dev_private = priv;
211 priv->drm = drm;
212 priv->dev = dev;
213
214 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu");
215 regs = devm_ioremap_resource(dev, res);
216 if (IS_ERR(regs))
217 return PTR_ERR(regs);
218
219 priv->io_base = regs;
220
221 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hhi");
222 /* Simply ioremap since it may be a shared register zone */
223 regs = devm_ioremap(dev, res->start, resource_size(res));
224 if (!regs)
225 return -EADDRNOTAVAIL;
226
227 priv->hhi = devm_regmap_init_mmio(dev, regs,
228 &meson_regmap_config);
229 if (IS_ERR(priv->hhi)) {
230 dev_err(&pdev->dev, "Couldn't create the HHI regmap\n");
231 return PTR_ERR(priv->hhi);
232 }
233
234 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc");
235 /* Simply ioremap since it may be a shared register zone */
236 regs = devm_ioremap(dev, res->start, resource_size(res));
237 if (!regs)
238 return -EADDRNOTAVAIL;
239
240 priv->dmc = devm_regmap_init_mmio(dev, regs,
241 &meson_regmap_config);
242 if (IS_ERR(priv->dmc)) {
243 dev_err(&pdev->dev, "Couldn't create the DMC regmap\n");
244 return PTR_ERR(priv->dmc);
245 }
246
247 priv->vsync_irq = platform_get_irq(pdev, 0);
248
249 drm_vblank_init(drm, 1);
250 drm_mode_config_init(drm);
251
252 /* Encoder Initialization */
253
254 ret = meson_venc_cvbs_create(priv);
255 if (ret)
256 goto free_drm;
257
258 /* Hardware Initialization */
259
260 meson_venc_init(priv);
261 meson_vpp_init(priv);
262 meson_viu_init(priv);
263
264 ret = meson_plane_create(priv);
265 if (ret)
266 goto free_drm;
267
268 ret = meson_crtc_create(priv);
269 if (ret)
270 goto free_drm;
271
272 ret = drm_irq_install(drm, priv->vsync_irq);
273 if (ret)
274 goto free_drm;
275
276 drm_mode_config_reset(drm);
277 drm->mode_config.max_width = 8192;
278 drm->mode_config.max_height = 8192;
279 drm->mode_config.funcs = &meson_mode_config_funcs;
280
281 priv->fbdev = drm_fbdev_cma_init(drm, 32,
282 drm->mode_config.num_crtc,
283 drm->mode_config.num_connector);
284 if (IS_ERR(priv->fbdev)) {
285 ret = PTR_ERR(priv->fbdev);
286 goto free_drm;
287 }
288
289 drm_kms_helper_poll_init(drm);
290
291 platform_set_drvdata(pdev, priv);
292
293 ret = drm_dev_register(drm, 0);
294 if (ret)
295 goto free_drm;
296
297 return 0;
298
299free_drm:
300 drm_dev_unref(drm);
301
302 return ret;
303}
304
305static int meson_drv_remove(struct platform_device *pdev)
306{
307 struct drm_device *drm = dev_get_drvdata(&pdev->dev);
308 struct meson_drm *priv = drm->dev_private;
309
310 drm_dev_unregister(drm);
311 drm_kms_helper_poll_fini(drm);
312 drm_fbdev_cma_fini(priv->fbdev);
313 drm_mode_config_cleanup(drm);
314 drm_vblank_cleanup(drm);
315 drm_dev_unref(drm);
316
317 return 0;
318}
319
320static const struct of_device_id dt_match[] = {
321 { .compatible = "amlogic,meson-gxbb-vpu" },
322 { .compatible = "amlogic,meson-gxl-vpu" },
323 { .compatible = "amlogic,meson-gxm-vpu" },
324 {}
325};
326MODULE_DEVICE_TABLE(of, dt_match);
327
328static struct platform_driver meson_drm_platform_driver = {
329 .probe = meson_drv_probe,
330 .remove = meson_drv_remove,
331 .driver = {
332 .owner = THIS_MODULE,
333 .name = DRIVER_NAME,
334 .of_match_table = dt_match,
335 },
336};
337
338module_platform_driver(meson_drm_platform_driver);
339
340MODULE_AUTHOR("Jasper St. Pierre <jstpierre@mecheye.net>");
341MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
342MODULE_DESCRIPTION(DRIVER_DESC);
343MODULE_LICENSE("GPL");
1/*
2 * Copyright (C) 2016 BayLibre, SAS
3 * Author: Neil Armstrong <narmstrong@baylibre.com>
4 * Copyright (C) 2014 Endless Mobile
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of the
9 * License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 *
19 * Written by:
20 * Jasper St. Pierre <jstpierre@mecheye.net>
21 */
22
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_gem_framebuffer_helper.h>
38#include <drm/drm_fb_cma_helper.h>
39#include <drm/drm_rect.h>
40#include <drm/drm_fb_helper.h>
41
42#include "meson_drv.h"
43#include "meson_plane.h"
44#include "meson_crtc.h"
45#include "meson_venc_cvbs.h"
46
47#include "meson_vpp.h"
48#include "meson_viu.h"
49#include "meson_venc.h"
50#include "meson_canvas.h"
51#include "meson_registers.h"
52
53#define DRIVER_NAME "meson"
54#define DRIVER_DESC "Amlogic Meson DRM driver"
55
56/**
57 * DOC: Video Processing Unit
58 *
59 * VPU Handles the Global Video Processing, it includes management of the
60 * clocks gates, blocks reset lines and power domains.
61 *
62 * What is missing :
63 *
64 * - Full reset of entire video processing HW blocks
65 * - Scaling and setup of the VPU clock
66 * - Bus clock gates
67 * - Powering up video processing HW blocks
68 * - Powering Up HDMI controller and PHY
69 */
70
71static void meson_fb_output_poll_changed(struct drm_device *dev)
72{
73 struct meson_drm *priv = dev->dev_private;
74
75 drm_fbdev_cma_hotplug_event(priv->fbdev);
76}
77
78static const struct drm_mode_config_funcs meson_mode_config_funcs = {
79 .output_poll_changed = meson_fb_output_poll_changed,
80 .atomic_check = drm_atomic_helper_check,
81 .atomic_commit = drm_atomic_helper_commit,
82 .fb_create = drm_gem_fb_create,
83};
84
85static irqreturn_t meson_irq(int irq, void *arg)
86{
87 struct drm_device *dev = arg;
88 struct meson_drm *priv = dev->dev_private;
89
90 (void)readl_relaxed(priv->io_base + _REG(VENC_INTFLAG));
91
92 meson_crtc_irq(priv);
93
94 return IRQ_HANDLED;
95}
96
97DEFINE_DRM_GEM_CMA_FOPS(fops);
98
99static struct drm_driver meson_driver = {
100 .driver_features = DRIVER_HAVE_IRQ | DRIVER_GEM |
101 DRIVER_MODESET | DRIVER_PRIME |
102 DRIVER_ATOMIC,
103
104 /* IRQ */
105 .irq_handler = meson_irq,
106
107 /* PRIME Ops */
108 .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
109 .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
110 .gem_prime_import = drm_gem_prime_import,
111 .gem_prime_export = drm_gem_prime_export,
112 .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table,
113 .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table,
114 .gem_prime_vmap = drm_gem_cma_prime_vmap,
115 .gem_prime_vunmap = drm_gem_cma_prime_vunmap,
116 .gem_prime_mmap = drm_gem_cma_prime_mmap,
117
118 /* GEM Ops */
119 .dumb_create = drm_gem_cma_dumb_create,
120 .gem_free_object_unlocked = drm_gem_cma_free_object,
121 .gem_vm_ops = &drm_gem_cma_vm_ops,
122
123 /* Misc */
124 .fops = &fops,
125 .name = DRIVER_NAME,
126 .desc = DRIVER_DESC,
127 .date = "20161109",
128 .major = 1,
129 .minor = 0,
130};
131
132static bool meson_vpu_has_available_connectors(struct device *dev)
133{
134 struct device_node *ep, *remote;
135
136 /* Parses each endpoint and check if remote exists */
137 for_each_endpoint_of_node(dev->of_node, ep) {
138 /* If the endpoint node exists, consider it enabled */
139 remote = of_graph_get_remote_port(ep);
140 if (remote)
141 return true;
142 }
143
144 return false;
145}
146
147static struct regmap_config meson_regmap_config = {
148 .reg_bits = 32,
149 .val_bits = 32,
150 .reg_stride = 4,
151 .max_register = 0x1000,
152};
153
154static void meson_vpu_init(struct meson_drm *priv)
155{
156 writel_relaxed(0x210000, priv->io_base + _REG(VPU_RDARB_MODE_L1C1));
157 writel_relaxed(0x10000, priv->io_base + _REG(VPU_RDARB_MODE_L1C2));
158 writel_relaxed(0x900000, priv->io_base + _REG(VPU_RDARB_MODE_L2C1));
159 writel_relaxed(0x20000, priv->io_base + _REG(VPU_WRARB_MODE_L2C1));
160}
161
162static int meson_drv_bind_master(struct device *dev, bool has_components)
163{
164 struct platform_device *pdev = to_platform_device(dev);
165 struct meson_drm *priv;
166 struct drm_device *drm;
167 struct resource *res;
168 void __iomem *regs;
169 int ret;
170
171 /* Checks if an output connector is available */
172 if (!meson_vpu_has_available_connectors(dev)) {
173 dev_err(dev, "No output connector available\n");
174 return -ENODEV;
175 }
176
177 drm = drm_dev_alloc(&meson_driver, dev);
178 if (IS_ERR(drm))
179 return PTR_ERR(drm);
180
181 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
182 if (!priv) {
183 ret = -ENOMEM;
184 goto free_drm;
185 }
186 drm->dev_private = priv;
187 priv->drm = drm;
188 priv->dev = dev;
189
190 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "vpu");
191 regs = devm_ioremap_resource(dev, res);
192 if (IS_ERR(regs)) {
193 ret = PTR_ERR(regs);
194 goto free_drm;
195 }
196
197 priv->io_base = regs;
198
199 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "hhi");
200 if (!res)
201 return -EINVAL;
202 /* Simply ioremap since it may be a shared register zone */
203 regs = devm_ioremap(dev, res->start, resource_size(res));
204 if (!regs) {
205 ret = -EADDRNOTAVAIL;
206 goto free_drm;
207 }
208
209 priv->hhi = devm_regmap_init_mmio(dev, regs,
210 &meson_regmap_config);
211 if (IS_ERR(priv->hhi)) {
212 dev_err(&pdev->dev, "Couldn't create the HHI regmap\n");
213 ret = PTR_ERR(priv->hhi);
214 goto free_drm;
215 }
216
217 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dmc");
218 if (!res)
219 return -EINVAL;
220 /* Simply ioremap since it may be a shared register zone */
221 regs = devm_ioremap(dev, res->start, resource_size(res));
222 if (!regs) {
223 ret = -EADDRNOTAVAIL;
224 goto free_drm;
225 }
226
227 priv->dmc = devm_regmap_init_mmio(dev, regs,
228 &meson_regmap_config);
229 if (IS_ERR(priv->dmc)) {
230 dev_err(&pdev->dev, "Couldn't create the DMC regmap\n");
231 ret = PTR_ERR(priv->dmc);
232 goto free_drm;
233 }
234
235 priv->vsync_irq = platform_get_irq(pdev, 0);
236
237 ret = drm_vblank_init(drm, 1);
238 if (ret)
239 goto free_drm;
240
241 drm_mode_config_init(drm);
242 drm->mode_config.max_width = 3840;
243 drm->mode_config.max_height = 2160;
244 drm->mode_config.funcs = &meson_mode_config_funcs;
245
246 /* Hardware Initialization */
247
248 meson_vpu_init(priv);
249 meson_venc_init(priv);
250 meson_vpp_init(priv);
251 meson_viu_init(priv);
252
253 /* Encoder Initialization */
254
255 ret = meson_venc_cvbs_create(priv);
256 if (ret)
257 goto free_drm;
258
259 if (has_components) {
260 ret = component_bind_all(drm->dev, drm);
261 if (ret) {
262 dev_err(drm->dev, "Couldn't bind all components\n");
263 goto free_drm;
264 }
265 }
266
267 ret = meson_plane_create(priv);
268 if (ret)
269 goto free_drm;
270
271 ret = meson_crtc_create(priv);
272 if (ret)
273 goto free_drm;
274
275 ret = drm_irq_install(drm, priv->vsync_irq);
276 if (ret)
277 goto free_drm;
278
279 drm_mode_config_reset(drm);
280
281 priv->fbdev = drm_fbdev_cma_init(drm, 32,
282 drm->mode_config.num_connector);
283 if (IS_ERR(priv->fbdev)) {
284 ret = PTR_ERR(priv->fbdev);
285 goto free_drm;
286 }
287
288 drm_kms_helper_poll_init(drm);
289
290 platform_set_drvdata(pdev, priv);
291
292 ret = drm_dev_register(drm, 0);
293 if (ret)
294 goto free_drm;
295
296 return 0;
297
298free_drm:
299 drm_dev_put(drm);
300
301 return ret;
302}
303
304static int meson_drv_bind(struct device *dev)
305{
306 return meson_drv_bind_master(dev, true);
307}
308
309static void meson_drv_unbind(struct device *dev)
310{
311 struct drm_device *drm = dev_get_drvdata(dev);
312 struct meson_drm *priv = drm->dev_private;
313
314 drm_dev_unregister(drm);
315 drm_kms_helper_poll_fini(drm);
316 drm_fbdev_cma_fini(priv->fbdev);
317 drm_mode_config_cleanup(drm);
318 drm_dev_put(drm);
319
320}
321
322static const struct component_master_ops meson_drv_master_ops = {
323 .bind = meson_drv_bind,
324 .unbind = meson_drv_unbind,
325};
326
327static int compare_of(struct device *dev, void *data)
328{
329 DRM_DEBUG_DRIVER("Comparing of node %pOF with %pOF\n",
330 dev->of_node, data);
331
332 return dev->of_node == data;
333}
334
335/* Possible connectors nodes to ignore */
336static const struct of_device_id connectors_match[] = {
337 { .compatible = "composite-video-connector" },
338 { .compatible = "svideo-connector" },
339 { .compatible = "hdmi-connector" },
340 { .compatible = "dvi-connector" },
341 {}
342};
343
344static int meson_probe_remote(struct platform_device *pdev,
345 struct component_match **match,
346 struct device_node *parent,
347 struct device_node *remote)
348{
349 struct device_node *ep, *remote_node;
350 int count = 1;
351
352 /* If node is a connector, return and do not add to match table */
353 if (of_match_node(connectors_match, remote))
354 return 1;
355
356 component_match_add(&pdev->dev, match, compare_of, remote);
357
358 for_each_endpoint_of_node(remote, ep) {
359 remote_node = of_graph_get_remote_port_parent(ep);
360 if (!remote_node ||
361 remote_node == parent || /* Ignore parent endpoint */
362 !of_device_is_available(remote_node))
363 continue;
364
365 count += meson_probe_remote(pdev, match, remote, remote_node);
366
367 of_node_put(remote_node);
368 }
369
370 return count;
371}
372
373static int meson_drv_probe(struct platform_device *pdev)
374{
375 struct component_match *match = NULL;
376 struct device_node *np = pdev->dev.of_node;
377 struct device_node *ep, *remote;
378 int count = 0;
379
380 for_each_endpoint_of_node(np, ep) {
381 remote = of_graph_get_remote_port_parent(ep);
382 if (!remote || !of_device_is_available(remote))
383 continue;
384
385 count += meson_probe_remote(pdev, &match, np, remote);
386 }
387
388 if (count && !match)
389 return meson_drv_bind_master(&pdev->dev, false);
390
391 /* If some endpoints were found, initialize the nodes */
392 if (count) {
393 dev_info(&pdev->dev, "Queued %d outputs on vpu\n", count);
394
395 return component_master_add_with_match(&pdev->dev,
396 &meson_drv_master_ops,
397 match);
398 }
399
400 /* If no output endpoints were available, simply bail out */
401 return 0;
402};
403
404static const struct of_device_id dt_match[] = {
405 { .compatible = "amlogic,meson-gxbb-vpu" },
406 { .compatible = "amlogic,meson-gxl-vpu" },
407 { .compatible = "amlogic,meson-gxm-vpu" },
408 {}
409};
410MODULE_DEVICE_TABLE(of, dt_match);
411
412static struct platform_driver meson_drm_platform_driver = {
413 .probe = meson_drv_probe,
414 .driver = {
415 .name = "meson-drm",
416 .of_match_table = dt_match,
417 },
418};
419
420module_platform_driver(meson_drm_platform_driver);
421
422MODULE_AUTHOR("Jasper St. Pierre <jstpierre@mecheye.net>");
423MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>");
424MODULE_DESCRIPTION(DRIVER_DESC);
425MODULE_LICENSE("GPL");