Commit | Line | Data |
---|---|---|
e692da4d SH |
1 | /* |
2 | * Freescale i.MX drm driver | |
3 | * | |
4 | * Copyright (C) 2011 Sascha Hauer, Pengutronix | |
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 | |
8 | * as published by the Free Software Foundation; either version 2 | |
9 | * of the License, or (at your option) any later version. | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | */ | |
17b5001b | 16 | #include <linux/component.h> |
e692da4d | 17 | #include <linux/device.h> |
e7d6231e RK |
18 | #include <linux/fb.h> |
19 | #include <linux/module.h> | |
655b43cc | 20 | #include <linux/of_graph.h> |
e692da4d SH |
21 | #include <linux/platform_device.h> |
22 | #include <drm/drmP.h> | |
23 | #include <drm/drm_fb_helper.h> | |
24 | #include <drm/drm_crtc_helper.h> | |
e692da4d SH |
25 | #include <drm/drm_gem_cma_helper.h> |
26 | #include <drm/drm_fb_cma_helper.h> | |
27 | ||
28 | #include "imx-drm.h" | |
29 | ||
30 | #define MAX_CRTC 4 | |
31 | ||
887eceac RK |
32 | struct imx_drm_crtc; |
33 | ||
655b43cc PZ |
34 | struct imx_drm_component { |
35 | struct device_node *of_node; | |
36 | struct list_head list; | |
37 | }; | |
38 | ||
e692da4d SH |
39 | struct imx_drm_device { |
40 | struct drm_device *drm; | |
887eceac | 41 | struct imx_drm_crtc *crtc[MAX_CRTC]; |
e692da4d SH |
42 | int pipes; |
43 | struct drm_fbdev_cma *fbhelper; | |
44 | }; | |
45 | ||
46 | struct imx_drm_crtc { | |
47 | struct drm_crtc *crtc; | |
e692da4d SH |
48 | int pipe; |
49 | struct imx_drm_crtc_helper_funcs imx_drm_helper_funcs; | |
655b43cc | 50 | struct device_node *port; |
e692da4d SH |
51 | }; |
52 | ||
8acba02f RK |
53 | static int legacyfb_depth = 16; |
54 | module_param(legacyfb_depth, int, 0444); | |
55 | ||
b8d181e4 PZ |
56 | int imx_drm_crtc_id(struct imx_drm_crtc *crtc) |
57 | { | |
58 | return crtc->pipe; | |
59 | } | |
9c74360f | 60 | EXPORT_SYMBOL_GPL(imx_drm_crtc_id); |
b8d181e4 | 61 | |
e692da4d SH |
62 | static void imx_drm_driver_lastclose(struct drm_device *drm) |
63 | { | |
8acba02f | 64 | #if IS_ENABLED(CONFIG_DRM_IMX_FB_HELPER) |
e692da4d SH |
65 | struct imx_drm_device *imxdrm = drm->dev_private; |
66 | ||
67 | if (imxdrm->fbhelper) | |
68 | drm_fbdev_cma_restore_mode(imxdrm->fbhelper); | |
8acba02f | 69 | #endif |
e692da4d SH |
70 | } |
71 | ||
72 | static int imx_drm_driver_unload(struct drm_device *drm) | |
73 | { | |
8acba02f | 74 | #if IS_ENABLED(CONFIG_DRM_IMX_FB_HELPER) |
e692da4d | 75 | struct imx_drm_device *imxdrm = drm->dev_private; |
3e68439b RK |
76 | #endif |
77 | ||
78 | drm_kms_helper_poll_fini(drm); | |
e692da4d | 79 | |
3e68439b | 80 | #if IS_ENABLED(CONFIG_DRM_IMX_FB_HELPER) |
8acba02f RK |
81 | if (imxdrm->fbhelper) |
82 | drm_fbdev_cma_fini(imxdrm->fbhelper); | |
83 | #endif | |
84 | ||
17b5001b RK |
85 | component_unbind_all(drm->dev, drm); |
86 | ||
020a9ea7 | 87 | drm_vblank_cleanup(drm); |
020a9ea7 | 88 | drm_mode_config_cleanup(drm); |
e692da4d | 89 | |
bfe945c8 SG |
90 | platform_set_drvdata(drm->platformdev, NULL); |
91 | ||
e692da4d SH |
92 | return 0; |
93 | } | |
94 | ||
fdffa6f2 | 95 | static struct imx_drm_crtc *imx_drm_find_crtc(struct drm_crtc *crtc) |
e692da4d | 96 | { |
32266b45 | 97 | struct imx_drm_device *imxdrm = crtc->dev->dev_private; |
887eceac RK |
98 | unsigned i; |
99 | ||
100 | for (i = 0; i < MAX_CRTC; i++) | |
101 | if (imxdrm->crtc[i] && imxdrm->crtc[i]->crtc == crtc) | |
102 | return imxdrm->crtc[i]; | |
e692da4d | 103 | |
e692da4d SH |
104 | return NULL; |
105 | } | |
106 | ||
f2d66aad | 107 | int imx_drm_panel_format_pins(struct drm_encoder *encoder, |
2ea42608 | 108 | u32 interface_pix_fmt, int hsync_pin, int vsync_pin) |
e692da4d | 109 | { |
e692da4d | 110 | struct imx_drm_crtc_helper_funcs *helper; |
887eceac | 111 | struct imx_drm_crtc *imx_crtc; |
e692da4d | 112 | |
f2d66aad | 113 | imx_crtc = imx_drm_find_crtc(encoder->crtc); |
887eceac RK |
114 | if (!imx_crtc) |
115 | return -EINVAL; | |
e692da4d | 116 | |
e692da4d SH |
117 | helper = &imx_crtc->imx_drm_helper_funcs; |
118 | if (helper->set_interface_pix_fmt) | |
f2d66aad RK |
119 | return helper->set_interface_pix_fmt(encoder->crtc, |
120 | encoder->encoder_type, interface_pix_fmt, | |
2ea42608 | 121 | hsync_pin, vsync_pin); |
e692da4d SH |
122 | return 0; |
123 | } | |
f2d66aad | 124 | EXPORT_SYMBOL_GPL(imx_drm_panel_format_pins); |
2ea42608 | 125 | |
f2d66aad | 126 | int imx_drm_panel_format(struct drm_encoder *encoder, u32 interface_pix_fmt) |
2ea42608 | 127 | { |
f2d66aad | 128 | return imx_drm_panel_format_pins(encoder, interface_pix_fmt, 2, 3); |
2ea42608 | 129 | } |
f2d66aad | 130 | EXPORT_SYMBOL_GPL(imx_drm_panel_format); |
e692da4d SH |
131 | |
132 | int imx_drm_crtc_vblank_get(struct imx_drm_crtc *imx_drm_crtc) | |
133 | { | |
b5ea1492 | 134 | return drm_vblank_get(imx_drm_crtc->crtc->dev, imx_drm_crtc->pipe); |
e692da4d SH |
135 | } |
136 | EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_get); | |
137 | ||
138 | void imx_drm_crtc_vblank_put(struct imx_drm_crtc *imx_drm_crtc) | |
139 | { | |
b5ea1492 | 140 | drm_vblank_put(imx_drm_crtc->crtc->dev, imx_drm_crtc->pipe); |
e692da4d SH |
141 | } |
142 | EXPORT_SYMBOL_GPL(imx_drm_crtc_vblank_put); | |
143 | ||
144 | void imx_drm_handle_vblank(struct imx_drm_crtc *imx_drm_crtc) | |
145 | { | |
b5ea1492 | 146 | drm_handle_vblank(imx_drm_crtc->crtc->dev, imx_drm_crtc->pipe); |
e692da4d SH |
147 | } |
148 | EXPORT_SYMBOL_GPL(imx_drm_handle_vblank); | |
149 | ||
150 | static int imx_drm_enable_vblank(struct drm_device *drm, int crtc) | |
151 | { | |
152 | struct imx_drm_device *imxdrm = drm->dev_private; | |
887eceac | 153 | struct imx_drm_crtc *imx_drm_crtc = imxdrm->crtc[crtc]; |
e692da4d SH |
154 | int ret; |
155 | ||
e692da4d SH |
156 | if (!imx_drm_crtc) |
157 | return -EINVAL; | |
158 | ||
159 | if (!imx_drm_crtc->imx_drm_helper_funcs.enable_vblank) | |
160 | return -ENOSYS; | |
161 | ||
162 | ret = imx_drm_crtc->imx_drm_helper_funcs.enable_vblank( | |
163 | imx_drm_crtc->crtc); | |
164 | ||
165 | return ret; | |
166 | } | |
167 | ||
168 | static void imx_drm_disable_vblank(struct drm_device *drm, int crtc) | |
169 | { | |
170 | struct imx_drm_device *imxdrm = drm->dev_private; | |
887eceac | 171 | struct imx_drm_crtc *imx_drm_crtc = imxdrm->crtc[crtc]; |
e692da4d | 172 | |
e692da4d SH |
173 | if (!imx_drm_crtc) |
174 | return; | |
175 | ||
176 | if (!imx_drm_crtc->imx_drm_helper_funcs.disable_vblank) | |
177 | return; | |
178 | ||
179 | imx_drm_crtc->imx_drm_helper_funcs.disable_vblank(imx_drm_crtc->crtc); | |
180 | } | |
181 | ||
6ee4d7fe SH |
182 | static void imx_drm_driver_preclose(struct drm_device *drm, |
183 | struct drm_file *file) | |
184 | { | |
185 | int i; | |
186 | ||
187 | if (!file->is_master) | |
188 | return; | |
189 | ||
942325c8 RK |
190 | for (i = 0; i < MAX_CRTC; i++) |
191 | imx_drm_disable_vblank(drm, i); | |
6ee4d7fe SH |
192 | } |
193 | ||
e692da4d SH |
194 | static const struct file_operations imx_drm_driver_fops = { |
195 | .owner = THIS_MODULE, | |
196 | .open = drm_open, | |
197 | .release = drm_release, | |
198 | .unlocked_ioctl = drm_ioctl, | |
199 | .mmap = drm_gem_cma_mmap, | |
200 | .poll = drm_poll, | |
e692da4d SH |
201 | .read = drm_read, |
202 | .llseek = noop_llseek, | |
203 | }; | |
204 | ||
8a51a33b RK |
205 | void imx_drm_connector_destroy(struct drm_connector *connector) |
206 | { | |
34ea3d38 | 207 | drm_connector_unregister(connector); |
8a51a33b RK |
208 | drm_connector_cleanup(connector); |
209 | } | |
210 | EXPORT_SYMBOL_GPL(imx_drm_connector_destroy); | |
211 | ||
212 | void imx_drm_encoder_destroy(struct drm_encoder *encoder) | |
213 | { | |
214 | drm_encoder_cleanup(encoder); | |
215 | } | |
216 | EXPORT_SYMBOL_GPL(imx_drm_encoder_destroy); | |
217 | ||
3e68439b RK |
218 | static void imx_drm_output_poll_changed(struct drm_device *drm) |
219 | { | |
220 | #if IS_ENABLED(CONFIG_DRM_IMX_FB_HELPER) | |
221 | struct imx_drm_device *imxdrm = drm->dev_private; | |
222 | ||
223 | drm_fbdev_cma_hotplug_event(imxdrm->fbhelper); | |
224 | #endif | |
225 | } | |
226 | ||
1df8b530 RK |
227 | static struct drm_mode_config_funcs imx_drm_mode_config_funcs = { |
228 | .fb_create = drm_fb_cma_create, | |
3e68439b | 229 | .output_poll_changed = imx_drm_output_poll_changed, |
1df8b530 RK |
230 | }; |
231 | ||
e692da4d | 232 | /* |
17b5001b RK |
233 | * Main DRM initialisation. This binds, initialises and registers |
234 | * with DRM the subcomponents of the driver. | |
e692da4d SH |
235 | */ |
236 | static int imx_drm_driver_load(struct drm_device *drm, unsigned long flags) | |
237 | { | |
b85f2b5d | 238 | struct imx_drm_device *imxdrm; |
e355e7dd | 239 | struct drm_connector *connector; |
e692da4d SH |
240 | int ret; |
241 | ||
b85f2b5d RK |
242 | imxdrm = devm_kzalloc(drm->dev, sizeof(*imxdrm), GFP_KERNEL); |
243 | if (!imxdrm) | |
244 | return -ENOMEM; | |
245 | ||
e692da4d SH |
246 | imxdrm->drm = drm; |
247 | ||
248 | drm->dev_private = imxdrm; | |
249 | ||
250 | /* | |
251 | * enable drm irq mode. | |
4423843c | 252 | * - with irq_enabled = true, we can use the vblank feature. |
e692da4d SH |
253 | * |
254 | * P.S. note that we wouldn't use drm irq handler but | |
255 | * just specific driver own one instead because | |
256 | * drm framework supports only one irq handler and | |
257 | * drivers can well take care of their interrupts | |
258 | */ | |
4423843c | 259 | drm->irq_enabled = true; |
e692da4d | 260 | |
1df8b530 RK |
261 | /* |
262 | * set max width and height as default value(4096x4096). | |
263 | * this value would be used to check framebuffer size limitation | |
264 | * at drm_mode_addfb(). | |
265 | */ | |
266 | drm->mode_config.min_width = 64; | |
267 | drm->mode_config.min_height = 64; | |
268 | drm->mode_config.max_width = 4096; | |
269 | drm->mode_config.max_height = 4096; | |
270 | drm->mode_config.funcs = &imx_drm_mode_config_funcs; | |
271 | ||
e692da4d | 272 | drm_mode_config_init(drm); |
e692da4d | 273 | |
020a9ea7 | 274 | ret = drm_vblank_init(drm, MAX_CRTC); |
e692da4d | 275 | if (ret) |
8007875f | 276 | goto err_kms; |
e692da4d SH |
277 | |
278 | /* | |
e7d6231e RK |
279 | * with vblank_disable_allowed = true, vblank interrupt will be |
280 | * disabled by drm timer once a current process gives up ownership | |
281 | * of vblank event. (after drm_vblank_put function is called) | |
e692da4d | 282 | */ |
020a9ea7 | 283 | drm->vblank_disable_allowed = true; |
e692da4d | 284 | |
a72f8bee | 285 | platform_set_drvdata(drm->platformdev, drm); |
8d71de61 | 286 | |
17b5001b RK |
287 | /* Now try and bind all our sub-components */ |
288 | ret = component_bind_all(drm->dev, drm); | |
289 | if (ret) | |
ccec7f62 | 290 | goto err_vblank; |
e355e7dd RK |
291 | |
292 | /* | |
293 | * All components are now added, we can publish the connector sysfs | |
294 | * entries to userspace. This will generate hotplug events and so | |
295 | * userspace will expect to be able to access DRM at this point. | |
296 | */ | |
297 | list_for_each_entry(connector, &drm->mode_config.connector_list, head) { | |
34ea3d38 | 298 | ret = drm_connector_register(connector); |
e355e7dd RK |
299 | if (ret) { |
300 | dev_err(drm->dev, | |
34ea3d38 | 301 | "[CONNECTOR:%d:%s] drm_connector_register failed: %d\n", |
e355e7dd | 302 | connector->base.id, |
4a2a450f | 303 | connector->name, ret); |
e355e7dd RK |
304 | goto err_unbind; |
305 | } | |
306 | } | |
307 | ||
8acba02f RK |
308 | /* |
309 | * All components are now initialised, so setup the fb helper. | |
310 | * The fb helper takes copies of key hardware information, so the | |
311 | * crtcs/connectors/encoders must not change after this point. | |
312 | */ | |
313 | #if IS_ENABLED(CONFIG_DRM_IMX_FB_HELPER) | |
314 | if (legacyfb_depth != 16 && legacyfb_depth != 32) { | |
315 | dev_warn(drm->dev, "Invalid legacyfb_depth. Defaulting to 16bpp\n"); | |
316 | legacyfb_depth = 16; | |
317 | } | |
318 | imxdrm->fbhelper = drm_fbdev_cma_init(drm, legacyfb_depth, | |
319 | drm->mode_config.num_crtc, MAX_CRTC); | |
320 | if (IS_ERR(imxdrm->fbhelper)) { | |
321 | ret = PTR_ERR(imxdrm->fbhelper); | |
322 | imxdrm->fbhelper = NULL; | |
323 | goto err_unbind; | |
324 | } | |
325 | #endif | |
3e68439b RK |
326 | |
327 | drm_kms_helper_poll_init(drm); | |
328 | ||
8007875f | 329 | return 0; |
a72f8bee | 330 | |
e355e7dd RK |
331 | err_unbind: |
332 | component_unbind_all(drm->dev, drm); | |
ccec7f62 | 333 | err_vblank: |
8007875f RK |
334 | drm_vblank_cleanup(drm); |
335 | err_kms: | |
8007875f | 336 | drm_mode_config_cleanup(drm); |
e692da4d SH |
337 | |
338 | return ret; | |
339 | } | |
340 | ||
e692da4d SH |
341 | /* |
342 | * imx_drm_add_crtc - add a new crtc | |
e692da4d | 343 | */ |
32266b45 | 344 | int imx_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc, |
e692da4d SH |
345 | struct imx_drm_crtc **new_crtc, |
346 | const struct imx_drm_crtc_helper_funcs *imx_drm_helper_funcs, | |
655b43cc | 347 | struct device_node *port) |
e692da4d | 348 | { |
32266b45 | 349 | struct imx_drm_device *imxdrm = drm->dev_private; |
e692da4d | 350 | struct imx_drm_crtc *imx_drm_crtc; |
e692da4d SH |
351 | int ret; |
352 | ||
fd6040ed RK |
353 | /* |
354 | * The vblank arrays are dimensioned by MAX_CRTC - we can't | |
355 | * pass IDs greater than this to those functions. | |
356 | */ | |
e7d6231e RK |
357 | if (imxdrm->pipes >= MAX_CRTC) |
358 | return -EINVAL; | |
fd6040ed | 359 | |
e7d6231e RK |
360 | if (imxdrm->drm->open_count) |
361 | return -EBUSY; | |
e692da4d SH |
362 | |
363 | imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL); | |
e7d6231e RK |
364 | if (!imx_drm_crtc) |
365 | return -ENOMEM; | |
e692da4d SH |
366 | |
367 | imx_drm_crtc->imx_drm_helper_funcs = *imx_drm_helper_funcs; | |
368 | imx_drm_crtc->pipe = imxdrm->pipes++; | |
655b43cc | 369 | imx_drm_crtc->port = port; |
e692da4d | 370 | imx_drm_crtc->crtc = crtc; |
e692da4d | 371 | |
887eceac | 372 | imxdrm->crtc[imx_drm_crtc->pipe] = imx_drm_crtc; |
e692da4d SH |
373 | |
374 | *new_crtc = imx_drm_crtc; | |
375 | ||
ec9557d7 | 376 | ret = drm_mode_crtc_set_gamma_size(imx_drm_crtc->crtc, 256); |
e692da4d SH |
377 | if (ret) |
378 | goto err_register; | |
379 | ||
ec9557d7 RK |
380 | drm_crtc_helper_add(crtc, |
381 | imx_drm_crtc->imx_drm_helper_funcs.crtc_helper_funcs); | |
382 | ||
32266b45 | 383 | drm_crtc_init(drm, crtc, |
ec9557d7 RK |
384 | imx_drm_crtc->imx_drm_helper_funcs.crtc_funcs); |
385 | ||
e692da4d SH |
386 | return 0; |
387 | ||
388 | err_register: | |
887eceac | 389 | imxdrm->crtc[imx_drm_crtc->pipe] = NULL; |
e692da4d | 390 | kfree(imx_drm_crtc); |
e692da4d SH |
391 | return ret; |
392 | } | |
393 | EXPORT_SYMBOL_GPL(imx_drm_add_crtc); | |
394 | ||
395 | /* | |
396 | * imx_drm_remove_crtc - remove a crtc | |
397 | */ | |
398 | int imx_drm_remove_crtc(struct imx_drm_crtc *imx_drm_crtc) | |
399 | { | |
ccec7f62 | 400 | struct imx_drm_device *imxdrm = imx_drm_crtc->crtc->dev->dev_private; |
e692da4d SH |
401 | |
402 | drm_crtc_cleanup(imx_drm_crtc->crtc); | |
403 | ||
887eceac | 404 | imxdrm->crtc[imx_drm_crtc->pipe] = NULL; |
e692da4d | 405 | |
e692da4d SH |
406 | kfree(imx_drm_crtc); |
407 | ||
408 | return 0; | |
409 | } | |
410 | EXPORT_SYMBOL_GPL(imx_drm_remove_crtc); | |
411 | ||
9e2d410d | 412 | /* |
655b43cc | 413 | * Find the DRM CRTC possible mask for the connected endpoint. |
9e2d410d RK |
414 | * |
415 | * The encoder possible masks are defined by their position in the | |
416 | * mode_config crtc_list. This means that CRTCs must not be added | |
417 | * or removed once the DRM device has been fully initialised. | |
418 | */ | |
419 | static uint32_t imx_drm_find_crtc_mask(struct imx_drm_device *imxdrm, | |
655b43cc | 420 | struct device_node *endpoint) |
9e2d410d | 421 | { |
655b43cc | 422 | struct device_node *port; |
9e2d410d RK |
423 | unsigned i; |
424 | ||
655b43cc PZ |
425 | port = of_graph_get_remote_port(endpoint); |
426 | if (!port) | |
427 | return 0; | |
428 | of_node_put(port); | |
429 | ||
9e2d410d RK |
430 | for (i = 0; i < MAX_CRTC; i++) { |
431 | struct imx_drm_crtc *imx_drm_crtc = imxdrm->crtc[i]; | |
63bc5164 | 432 | |
655b43cc | 433 | if (imx_drm_crtc && imx_drm_crtc->port == port) |
9e2d410d RK |
434 | return drm_crtc_mask(imx_drm_crtc->crtc); |
435 | } | |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
655b43cc PZ |
440 | static struct device_node *imx_drm_of_get_next_endpoint( |
441 | const struct device_node *parent, struct device_node *prev) | |
442 | { | |
443 | struct device_node *node = of_graph_get_next_endpoint(parent, prev); | |
63bc5164 | 444 | |
655b43cc PZ |
445 | of_node_put(prev); |
446 | return node; | |
447 | } | |
448 | ||
9e2d410d RK |
449 | int imx_drm_encoder_parse_of(struct drm_device *drm, |
450 | struct drm_encoder *encoder, struct device_node *np) | |
451 | { | |
452 | struct imx_drm_device *imxdrm = drm->dev_private; | |
655b43cc | 453 | struct device_node *ep = NULL; |
9e2d410d | 454 | uint32_t crtc_mask = 0; |
655b43cc | 455 | int i; |
9e2d410d | 456 | |
655b43cc PZ |
457 | for (i = 0; ; i++) { |
458 | u32 mask; | |
9e2d410d | 459 | |
655b43cc PZ |
460 | ep = imx_drm_of_get_next_endpoint(np, ep); |
461 | if (!ep) | |
9e2d410d | 462 | break; |
9e2d410d | 463 | |
655b43cc | 464 | mask = imx_drm_find_crtc_mask(imxdrm, ep); |
9e2d410d RK |
465 | |
466 | /* | |
467 | * If we failed to find the CRTC(s) which this encoder is | |
468 | * supposed to be connected to, it's because the CRTC has | |
469 | * not been registered yet. Defer probing, and hope that | |
470 | * the required CRTC is added later. | |
471 | */ | |
472 | if (mask == 0) | |
473 | return -EPROBE_DEFER; | |
474 | ||
475 | crtc_mask |= mask; | |
476 | } | |
477 | ||
ddf5a2c1 | 478 | of_node_put(ep); |
655b43cc PZ |
479 | if (i == 0) |
480 | return -ENOENT; | |
481 | ||
9e2d410d RK |
482 | encoder->possible_crtcs = crtc_mask; |
483 | ||
484 | /* FIXME: this is the mask of outputs which can clone this output. */ | |
485 | encoder->possible_clones = ~0; | |
486 | ||
487 | return 0; | |
488 | } | |
489 | EXPORT_SYMBOL_GPL(imx_drm_encoder_parse_of); | |
490 | ||
655b43cc PZ |
491 | /* |
492 | * @node: device tree node containing encoder input ports | |
493 | * @encoder: drm_encoder | |
494 | */ | |
495 | int imx_drm_encoder_get_mux_id(struct device_node *node, | |
496 | struct drm_encoder *encoder) | |
e692da4d | 497 | { |
887eceac | 498 | struct imx_drm_crtc *imx_crtc = imx_drm_find_crtc(encoder->crtc); |
655b43cc | 499 | struct device_node *ep = NULL; |
b6babdd9 | 500 | struct of_endpoint endpoint; |
655b43cc | 501 | struct device_node *port; |
b6babdd9 | 502 | int ret; |
e692da4d | 503 | |
655b43cc PZ |
504 | if (!node || !imx_crtc) |
505 | return -EINVAL; | |
506 | ||
507 | do { | |
508 | ep = imx_drm_of_get_next_endpoint(node, ep); | |
509 | if (!ep) | |
510 | break; | |
511 | ||
512 | port = of_graph_get_remote_port(ep); | |
513 | of_node_put(port); | |
514 | if (port == imx_crtc->port) { | |
b6babdd9 | 515 | ret = of_graph_parse_endpoint(ep, &endpoint); |
c509bdc2 | 516 | return ret ? ret : endpoint.port; |
655b43cc PZ |
517 | } |
518 | } while (ep); | |
e692da4d | 519 | |
655b43cc | 520 | return -EINVAL; |
e692da4d | 521 | } |
ea8d1583 | 522 | EXPORT_SYMBOL_GPL(imx_drm_encoder_get_mux_id); |
e692da4d | 523 | |
baa70943 | 524 | static const struct drm_ioctl_desc imx_drm_ioctls[] = { |
e692da4d SH |
525 | /* none so far */ |
526 | }; | |
527 | ||
528 | static struct drm_driver imx_drm_driver = { | |
bd3665c9 | 529 | .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME, |
e692da4d SH |
530 | .load = imx_drm_driver_load, |
531 | .unload = imx_drm_driver_unload, | |
e692da4d | 532 | .lastclose = imx_drm_driver_lastclose, |
6ee4d7fe | 533 | .preclose = imx_drm_driver_preclose, |
915b4d11 | 534 | .set_busid = drm_platform_set_busid, |
e692da4d SH |
535 | .gem_free_object = drm_gem_cma_free_object, |
536 | .gem_vm_ops = &drm_gem_cma_vm_ops, | |
537 | .dumb_create = drm_gem_cma_dumb_create, | |
538 | .dumb_map_offset = drm_gem_cma_dumb_map_offset, | |
43387b37 | 539 | .dumb_destroy = drm_gem_dumb_destroy, |
e692da4d | 540 | |
bd3665c9 PZ |
541 | .prime_handle_to_fd = drm_gem_prime_handle_to_fd, |
542 | .prime_fd_to_handle = drm_gem_prime_fd_to_handle, | |
543 | .gem_prime_import = drm_gem_prime_import, | |
544 | .gem_prime_export = drm_gem_prime_export, | |
545 | .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, | |
546 | .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, | |
547 | .gem_prime_vmap = drm_gem_cma_prime_vmap, | |
548 | .gem_prime_vunmap = drm_gem_cma_prime_vunmap, | |
549 | .gem_prime_mmap = drm_gem_cma_prime_mmap, | |
e692da4d SH |
550 | .get_vblank_counter = drm_vblank_count, |
551 | .enable_vblank = imx_drm_enable_vblank, | |
552 | .disable_vblank = imx_drm_disable_vblank, | |
553 | .ioctls = imx_drm_ioctls, | |
554 | .num_ioctls = ARRAY_SIZE(imx_drm_ioctls), | |
555 | .fops = &imx_drm_driver_fops, | |
556 | .name = "imx-drm", | |
557 | .desc = "i.MX DRM graphics", | |
558 | .date = "20120507", | |
559 | .major = 1, | |
560 | .minor = 0, | |
561 | .patchlevel = 0, | |
562 | }; | |
563 | ||
17b5001b RK |
564 | static int compare_of(struct device *dev, void *data) |
565 | { | |
655b43cc | 566 | struct device_node *np = data; |
17b5001b | 567 | |
655b43cc PZ |
568 | /* Special case for LDB, one device for two channels */ |
569 | if (of_node_cmp(np->name, "lvds-channel") == 0) { | |
570 | np = of_get_parent(np); | |
571 | of_node_put(np); | |
17b5001b RK |
572 | } |
573 | ||
655b43cc PZ |
574 | return dev->of_node == np; |
575 | } | |
17b5001b | 576 | |
17b5001b RK |
577 | static int imx_drm_bind(struct device *dev) |
578 | { | |
579 | return drm_platform_init(&imx_drm_driver, to_platform_device(dev)); | |
580 | } | |
581 | ||
582 | static void imx_drm_unbind(struct device *dev) | |
583 | { | |
584 | drm_put_dev(dev_get_drvdata(dev)); | |
585 | } | |
586 | ||
587 | static const struct component_master_ops imx_drm_ops = { | |
17b5001b RK |
588 | .bind = imx_drm_bind, |
589 | .unbind = imx_drm_unbind, | |
590 | }; | |
591 | ||
e692da4d SH |
592 | static int imx_drm_platform_probe(struct platform_device *pdev) |
593 | { | |
655b43cc | 594 | struct device_node *ep, *port, *remote; |
9e5e2ffd | 595 | struct component_match *match = NULL; |
4cdbb4ff | 596 | int ret; |
655b43cc PZ |
597 | int i; |
598 | ||
599 | /* | |
600 | * Bind the IPU display interface ports first, so that | |
601 | * imx_drm_encoder_parse_of called from encoder .bind callbacks | |
602 | * works as expected. | |
603 | */ | |
604 | for (i = 0; ; i++) { | |
605 | port = of_parse_phandle(pdev->dev.of_node, "ports", i); | |
606 | if (!port) | |
607 | break; | |
608 | ||
9e5e2ffd | 609 | component_match_add(&pdev->dev, &match, compare_of, port); |
655b43cc PZ |
610 | } |
611 | ||
612 | if (i == 0) { | |
613 | dev_err(&pdev->dev, "missing 'ports' property\n"); | |
614 | return -ENODEV; | |
615 | } | |
616 | ||
617 | /* Then bind all encoders */ | |
618 | for (i = 0; ; i++) { | |
619 | port = of_parse_phandle(pdev->dev.of_node, "ports", i); | |
620 | if (!port) | |
621 | break; | |
622 | ||
623 | for_each_child_of_node(port, ep) { | |
624 | remote = of_graph_get_remote_port_parent(ep); | |
625 | if (!remote || !of_device_is_available(remote)) { | |
626 | of_node_put(remote); | |
627 | continue; | |
1c236629 SG |
628 | } else if (!of_device_is_available(remote->parent)) { |
629 | dev_warn(&pdev->dev, "parent device of %s is not available\n", | |
630 | remote->full_name); | |
631 | of_node_put(remote); | |
632 | continue; | |
655b43cc PZ |
633 | } |
634 | ||
f582d9a8 RK |
635 | component_match_add(&pdev->dev, &match, compare_of, |
636 | remote); | |
655b43cc | 637 | of_node_put(remote); |
655b43cc PZ |
638 | } |
639 | of_node_put(port); | |
640 | } | |
4cdbb4ff RK |
641 | |
642 | ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)); | |
643 | if (ret) | |
644 | return ret; | |
645 | ||
9e5e2ffd | 646 | return component_master_add_with_match(&pdev->dev, &imx_drm_ops, match); |
e692da4d SH |
647 | } |
648 | ||
649 | static int imx_drm_platform_remove(struct platform_device *pdev) | |
650 | { | |
17b5001b | 651 | component_master_del(&pdev->dev, &imx_drm_ops); |
e692da4d SH |
652 | return 0; |
653 | } | |
654 | ||
bfe945c8 SG |
655 | #ifdef CONFIG_PM_SLEEP |
656 | static int imx_drm_suspend(struct device *dev) | |
657 | { | |
658 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
659 | ||
660 | /* The drm_dev is NULL before .load hook is called */ | |
661 | if (drm_dev == NULL) | |
662 | return 0; | |
663 | ||
664 | drm_kms_helper_poll_disable(drm_dev); | |
665 | ||
666 | return 0; | |
667 | } | |
668 | ||
669 | static int imx_drm_resume(struct device *dev) | |
670 | { | |
671 | struct drm_device *drm_dev = dev_get_drvdata(dev); | |
672 | ||
673 | if (drm_dev == NULL) | |
674 | return 0; | |
675 | ||
676 | drm_helper_resume_force_mode(drm_dev); | |
677 | drm_kms_helper_poll_enable(drm_dev); | |
678 | ||
679 | return 0; | |
680 | } | |
681 | #endif | |
682 | ||
683 | static SIMPLE_DEV_PM_OPS(imx_drm_pm_ops, imx_drm_suspend, imx_drm_resume); | |
684 | ||
17b5001b | 685 | static const struct of_device_id imx_drm_dt_ids[] = { |
655b43cc | 686 | { .compatible = "fsl,imx-display-subsystem", }, |
17b5001b RK |
687 | { /* sentinel */ }, |
688 | }; | |
689 | MODULE_DEVICE_TABLE(of, imx_drm_dt_ids); | |
690 | ||
e692da4d SH |
691 | static struct platform_driver imx_drm_pdrv = { |
692 | .probe = imx_drm_platform_probe, | |
99c28f10 | 693 | .remove = imx_drm_platform_remove, |
e692da4d SH |
694 | .driver = { |
695 | .owner = THIS_MODULE, | |
696 | .name = "imx-drm", | |
bfe945c8 | 697 | .pm = &imx_drm_pm_ops, |
17b5001b | 698 | .of_match_table = imx_drm_dt_ids, |
e692da4d SH |
699 | }, |
700 | }; | |
b85f2b5d | 701 | module_platform_driver(imx_drm_pdrv); |
e692da4d SH |
702 | |
703 | MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>"); | |
704 | MODULE_DESCRIPTION("i.MX drm driver core"); | |
705 | MODULE_LICENSE("GPL"); |