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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
96f60e37 RK |
2 | /* |
3 | * Copyright (C) 2012 Russell King | |
96f60e37 | 4 | */ |
25e28ef2 | 5 | |
96f60e37 | 6 | #include <linux/clk.h> |
0101fd00 | 7 | #include <linux/component.h> |
96f60e37 | 8 | #include <linux/module.h> |
0101fd00 | 9 | #include <linux/of_graph.h> |
25e28ef2 SR |
10 | #include <linux/platform_device.h> |
11 | ||
6bd02908 | 12 | #include <drm/drm_atomic_helper.h> |
25e28ef2 SR |
13 | #include <drm/drm_drv.h> |
14 | #include <drm/drm_ioctl.h> | |
780e41ed | 15 | #include <drm/drm_managed.h> |
25e28ef2 | 16 | #include <drm/drm_prime.h> |
fcd70cd3 | 17 | #include <drm/drm_probe_helper.h> |
df139288 | 18 | #include <drm/drm_fb_helper.h> |
7fc7e86d | 19 | #include <drm/drm_of.h> |
25e28ef2 SR |
20 | #include <drm/drm_vblank.h> |
21 | ||
96f60e37 RK |
22 | #include "armada_crtc.h" |
23 | #include "armada_drm.h" | |
24 | #include "armada_gem.h" | |
3382a6b9 | 25 | #include "armada_fb.h" |
96f60e37 RK |
26 | #include "armada_hw.h" |
27 | #include <drm/armada_drm.h> | |
28 | #include "armada_ioctlP.h" | |
29 | ||
96f60e37 | 30 | static struct drm_ioctl_desc armada_ioctls[] = { |
f8c47144 DV |
31 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_CREATE, armada_gem_create_ioctl,0), |
32 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_MMAP, armada_gem_mmap_ioctl, 0), | |
33 | DRM_IOCTL_DEF_DRV(ARMADA_GEM_PWRITE, armada_gem_pwrite_ioctl, 0), | |
96f60e37 RK |
34 | }; |
35 | ||
f42e1819 | 36 | DEFINE_DRM_GEM_FOPS(armada_drm_fops); |
96f60e37 RK |
37 | |
38 | static struct drm_driver armada_drm_driver = { | |
df139288 | 39 | .lastclose = drm_fb_helper_lastclose, |
87adc638 | 40 | .gem_free_object_unlocked = armada_gem_free_object, |
96f60e37 RK |
41 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
42 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
43 | .gem_prime_export = armada_gem_prime_export, | |
44 | .gem_prime_import = armada_gem_prime_import, | |
45 | .dumb_create = armada_gem_dumb_create, | |
96f60e37 RK |
46 | .gem_vm_ops = &armada_gem_vm_ops, |
47 | .major = 1, | |
48 | .minor = 0, | |
49 | .name = "armada-drm", | |
50 | .desc = "Armada SoC DRM", | |
51 | .date = "20120730", | |
0424fdaf | 52 | .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC, |
96f60e37 RK |
53 | .ioctls = armada_ioctls, |
54 | .fops = &armada_drm_fops, | |
55 | }; | |
56 | ||
3382a6b9 RK |
57 | static const struct drm_mode_config_funcs armada_drm_mode_config_funcs = { |
58 | .fb_create = armada_fb_create, | |
59 | .output_poll_changed = drm_fb_helper_output_poll_changed, | |
6bd02908 RK |
60 | .atomic_check = drm_atomic_helper_check, |
61 | .atomic_commit = drm_atomic_helper_commit, | |
3382a6b9 RK |
62 | }; |
63 | ||
0101fd00 RK |
64 | static int armada_drm_bind(struct device *dev) |
65 | { | |
917a3cbe RK |
66 | struct armada_private *priv; |
67 | struct resource *mem = NULL; | |
68 | int ret, n; | |
69 | ||
70 | for (n = 0; ; n++) { | |
71 | struct resource *r = platform_get_resource(to_platform_device(dev), | |
72 | IORESOURCE_MEM, n); | |
73 | if (!r) | |
74 | break; | |
75 | ||
76 | /* Resources above 64K are graphics memory */ | |
77 | if (resource_size(r) > SZ_64K) | |
78 | mem = r; | |
79 | else | |
80 | return -EINVAL; | |
81 | } | |
82 | ||
83 | if (!mem) | |
84 | return -ENXIO; | |
85 | ||
86 | if (!devm_request_mem_region(dev, mem->start, resource_size(mem), | |
87 | "armada-drm")) | |
88 | return -EBUSY; | |
89 | ||
90ad200b DV |
90 | priv = devm_drm_dev_alloc(dev, &armada_drm_driver, |
91 | struct armada_private, drm); | |
92 | if (IS_ERR(priv)) { | |
93 | dev_err(dev, "[" DRM_NAME ":%s] devm_drm_dev_alloc failed: %li\n", | |
94 | __func__, PTR_ERR(priv)); | |
95 | return PTR_ERR(priv); | |
917a3cbe RK |
96 | } |
97 | ||
f54a5990 LR |
98 | /* Remove early framebuffers */ |
99 | ret = drm_fb_helper_remove_conflicting_framebuffers(NULL, | |
100 | "armada-drm-fb", | |
101 | false); | |
102 | if (ret) { | |
103 | dev_err(dev, "[" DRM_NAME ":%s] can't kick out simple-fb: %d\n", | |
104 | __func__, ret); | |
105 | kfree(priv); | |
106 | return ret; | |
107 | } | |
108 | ||
76adb460 | 109 | dev_set_drvdata(dev, &priv->drm); |
917a3cbe | 110 | |
917a3cbe RK |
111 | /* Mode setting support */ |
112 | drm_mode_config_init(&priv->drm); | |
113 | priv->drm.mode_config.min_width = 320; | |
114 | priv->drm.mode_config.min_height = 200; | |
115 | ||
116 | /* | |
117 | * With vscale enabled, the maximum width is 1920 due to the | |
118 | * 1920 by 3 lines RAM | |
119 | */ | |
120 | priv->drm.mode_config.max_width = 1920; | |
121 | priv->drm.mode_config.max_height = 2048; | |
122 | ||
123 | priv->drm.mode_config.preferred_depth = 24; | |
124 | priv->drm.mode_config.funcs = &armada_drm_mode_config_funcs; | |
125 | drm_mm_init(&priv->linear, mem->start, resource_size(mem)); | |
126 | mutex_init(&priv->linear_lock); | |
127 | ||
128 | ret = component_bind_all(dev, &priv->drm); | |
129 | if (ret) | |
130 | goto err_kms; | |
131 | ||
132 | ret = drm_vblank_init(&priv->drm, priv->drm.mode_config.num_crtc); | |
133 | if (ret) | |
134 | goto err_comp; | |
135 | ||
136 | priv->drm.irq_enabled = true; | |
137 | ||
80c63aee RK |
138 | drm_mode_config_reset(&priv->drm); |
139 | ||
917a3cbe RK |
140 | ret = armada_fbdev_init(&priv->drm); |
141 | if (ret) | |
142 | goto err_comp; | |
143 | ||
144 | drm_kms_helper_poll_init(&priv->drm); | |
145 | ||
146 | ret = drm_dev_register(&priv->drm, 0); | |
147 | if (ret) | |
148 | goto err_poll; | |
149 | ||
150 | #ifdef CONFIG_DEBUG_FS | |
151 | armada_drm_debugfs_init(priv->drm.primary); | |
152 | #endif | |
153 | ||
917a3cbe RK |
154 | return 0; |
155 | ||
156 | err_poll: | |
157 | drm_kms_helper_poll_fini(&priv->drm); | |
158 | armada_fbdev_fini(&priv->drm); | |
159 | err_comp: | |
160 | component_unbind_all(dev, &priv->drm); | |
161 | err_kms: | |
162 | drm_mode_config_cleanup(&priv->drm); | |
163 | drm_mm_takedown(&priv->linear); | |
917a3cbe | 164 | return ret; |
0101fd00 RK |
165 | } |
166 | ||
167 | static void armada_drm_unbind(struct device *dev) | |
168 | { | |
917a3cbe | 169 | struct drm_device *drm = dev_get_drvdata(dev); |
dad75a52 | 170 | struct armada_private *priv = drm_to_armada_dev(drm); |
917a3cbe RK |
171 | |
172 | drm_kms_helper_poll_fini(&priv->drm); | |
173 | armada_fbdev_fini(&priv->drm); | |
174 | ||
917a3cbe RK |
175 | drm_dev_unregister(&priv->drm); |
176 | ||
0ab17499 RK |
177 | drm_atomic_helper_shutdown(&priv->drm); |
178 | ||
917a3cbe RK |
179 | component_unbind_all(dev, &priv->drm); |
180 | ||
181 | drm_mode_config_cleanup(&priv->drm); | |
182 | drm_mm_takedown(&priv->linear); | |
0101fd00 RK |
183 | } |
184 | ||
185 | static int compare_of(struct device *dev, void *data) | |
186 | { | |
187 | return dev->of_node == data; | |
188 | } | |
189 | ||
190 | static int compare_dev_name(struct device *dev, void *data) | |
191 | { | |
192 | const char *name = data; | |
193 | return !strcmp(dev_name(dev), name); | |
194 | } | |
195 | ||
196 | static void armada_add_endpoints(struct device *dev, | |
989b9a7d | 197 | struct component_match **match, struct device_node *dev_node) |
0101fd00 RK |
198 | { |
199 | struct device_node *ep, *remote; | |
200 | ||
989b9a7d | 201 | for_each_endpoint_of_node(dev_node, ep) { |
0101fd00 | 202 | remote = of_graph_get_remote_port_parent(ep); |
837567c1 RK |
203 | if (remote && of_device_is_available(remote)) |
204 | drm_of_component_match_add(dev, match, compare_of, | |
205 | remote); | |
0101fd00 RK |
206 | of_node_put(remote); |
207 | } | |
208 | } | |
209 | ||
7fc7e86d LD |
210 | static const struct component_master_ops armada_master_ops = { |
211 | .bind = armada_drm_bind, | |
212 | .unbind = armada_drm_unbind, | |
213 | }; | |
0101fd00 | 214 | |
7fc7e86d LD |
215 | static int armada_drm_probe(struct platform_device *pdev) |
216 | { | |
217 | struct component_match *match = NULL; | |
218 | struct device *dev = &pdev->dev; | |
219 | int ret; | |
0101fd00 | 220 | |
7fc7e86d LD |
221 | ret = drm_of_component_probe(dev, compare_dev_name, &armada_master_ops); |
222 | if (ret != -EINVAL) | |
223 | return ret; | |
0101fd00 | 224 | |
7fc7e86d | 225 | if (dev->platform_data) { |
0101fd00 RK |
226 | char **devices = dev->platform_data; |
227 | struct device *d; | |
7fc7e86d | 228 | int i; |
0101fd00 RK |
229 | |
230 | for (i = 0; devices[i]; i++) | |
7fc7e86d | 231 | component_match_add(dev, &match, compare_dev_name, |
0101fd00 RK |
232 | devices[i]); |
233 | ||
234 | if (i == 0) { | |
235 | dev_err(dev, "missing 'ports' property\n"); | |
236 | return -ENODEV; | |
237 | } | |
238 | ||
239 | for (i = 0; devices[i]; i++) { | |
240 | d = bus_find_device_by_name(&platform_bus_type, NULL, | |
7fc7e86d | 241 | devices[i]); |
989b9a7d RK |
242 | if (d && d->of_node) |
243 | armada_add_endpoints(dev, &match, d->of_node); | |
0101fd00 RK |
244 | put_device(d); |
245 | } | |
246 | } | |
247 | ||
0fb2970b RK |
248 | return component_master_add_with_match(&pdev->dev, &armada_master_ops, |
249 | match); | |
96f60e37 RK |
250 | } |
251 | ||
252 | static int armada_drm_remove(struct platform_device *pdev) | |
253 | { | |
0fb2970b | 254 | component_master_del(&pdev->dev, &armada_master_ops); |
96f60e37 RK |
255 | return 0; |
256 | } | |
257 | ||
258 | static const struct platform_device_id armada_drm_platform_ids[] = { | |
259 | { | |
260 | .name = "armada-drm", | |
96f60e37 RK |
261 | }, { |
262 | .name = "armada-510-drm", | |
96f60e37 RK |
263 | }, |
264 | { }, | |
265 | }; | |
266 | MODULE_DEVICE_TABLE(platform, armada_drm_platform_ids); | |
267 | ||
268 | static struct platform_driver armada_drm_platform_driver = { | |
269 | .probe = armada_drm_probe, | |
270 | .remove = armada_drm_remove, | |
271 | .driver = { | |
272 | .name = "armada-drm", | |
96f60e37 RK |
273 | }, |
274 | .id_table = armada_drm_platform_ids, | |
275 | }; | |
276 | ||
277 | static int __init armada_drm_init(void) | |
278 | { | |
d8c96083 RK |
279 | int ret; |
280 | ||
f95aeb17 | 281 | armada_drm_driver.num_ioctls = ARRAY_SIZE(armada_ioctls); |
d8c96083 RK |
282 | |
283 | ret = platform_driver_register(&armada_lcd_platform_driver); | |
284 | if (ret) | |
285 | return ret; | |
286 | ret = platform_driver_register(&armada_drm_platform_driver); | |
287 | if (ret) | |
288 | platform_driver_unregister(&armada_lcd_platform_driver); | |
289 | return ret; | |
96f60e37 RK |
290 | } |
291 | module_init(armada_drm_init); | |
292 | ||
293 | static void __exit armada_drm_exit(void) | |
294 | { | |
295 | platform_driver_unregister(&armada_drm_platform_driver); | |
d8c96083 | 296 | platform_driver_unregister(&armada_lcd_platform_driver); |
96f60e37 RK |
297 | } |
298 | module_exit(armada_drm_exit); | |
299 | ||
4f39467e | 300 | MODULE_AUTHOR("Russell King <rmk+kernel@armlinux.org.uk>"); |
96f60e37 RK |
301 | MODULE_DESCRIPTION("Armada DRM Driver"); |
302 | MODULE_LICENSE("GPL"); | |
303 | MODULE_ALIAS("platform:armada-drm"); |