1 /*
2 * Copyright 2021 Red Hat Inc.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
21 */
22 #define nvkm_uoutp(p) container_of((p), struct nvkm_outp, object)
23 #include "outp.h"
24 #include "dp.h"
25 #include "head.h"
26 #include "ior.h"
27
28 #include <nvif/if0012.h>
29
30 static int
nvkm_uoutp_mthd_dp_mst_vcpi(struct nvkm_outp * outp,void * argv,u32 argc)31 nvkm_uoutp_mthd_dp_mst_vcpi(struct nvkm_outp *outp, void *argv, u32 argc)
32 {
33 struct nvkm_ior *ior = outp->ior;
34 union nvif_outp_dp_mst_vcpi_args *args = argv;
35
36 if (argc != sizeof(args->v0) || args->v0.version != 0)
37 return -ENOSYS;
38 if (!ior->func->dp || !ior->func->dp->vcpi || !nvkm_head_find(outp->disp, args->v0.head))
39 return -EINVAL;
40
41 ior->func->dp->vcpi(ior, args->v0.head, args->v0.start_slot, args->v0.num_slots,
42 args->v0.pbn, args->v0.aligned_pbn);
43 return 0;
44 }
45
46 static int
nvkm_uoutp_mthd_dp_retrain(struct nvkm_outp * outp,void * argv,u32 argc)47 nvkm_uoutp_mthd_dp_retrain(struct nvkm_outp *outp, void *argv, u32 argc)
48 {
49 union nvif_outp_dp_retrain_args *args = argv;
50
51 if (argc != sizeof(args->vn))
52 return -ENOSYS;
53
54 if (!atomic_read(&outp->dp.lt.done))
55 return 0;
56
57 return outp->func->acquire(outp);
58 }
59
60 static int
nvkm_uoutp_mthd_dp_aux_pwr(struct nvkm_outp * outp,void * argv,u32 argc)61 nvkm_uoutp_mthd_dp_aux_pwr(struct nvkm_outp *outp, void *argv, u32 argc)
62 {
63 union nvif_outp_dp_aux_pwr_args *args = argv;
64
65 if (argc != sizeof(args->v0) || args->v0.version != 0)
66 return -ENOSYS;
67
68 outp->dp.enabled = !!args->v0.state;
69 nvkm_dp_enable(outp, outp->dp.enabled);
70 return 0;
71 }
72
73 static int
nvkm_uoutp_mthd_hda_eld(struct nvkm_outp * outp,void * argv,u32 argc)74 nvkm_uoutp_mthd_hda_eld(struct nvkm_outp *outp, void *argv, u32 argc)
75 {
76 struct nvkm_ior *ior = outp->ior;
77 union nvif_outp_hda_eld_args *args = argv;
78
79 if (argc < sizeof(args->v0) || args->v0.version != 0)
80 return -ENOSYS;
81 argc -= sizeof(args->v0);
82
83 if (!ior->hda || !nvkm_head_find(outp->disp, args->v0.head))
84 return -EINVAL;
85 if (argc > 0x60)
86 return -E2BIG;
87
88 if (argc && args->v0.data[0]) {
89 if (outp->info.type == DCB_OUTPUT_DP)
90 ior->func->dp->audio(ior, args->v0.head, true);
91 ior->func->hda->hpd(ior, args->v0.head, true);
92 ior->func->hda->eld(ior, args->v0.head, args->v0.data, argc);
93 } else {
94 if (outp->info.type == DCB_OUTPUT_DP)
95 ior->func->dp->audio(ior, args->v0.head, false);
96 ior->func->hda->hpd(ior, args->v0.head, false);
97 }
98
99 return 0;
100 }
101
102 static int
nvkm_uoutp_mthd_infoframe(struct nvkm_outp * outp,void * argv,u32 argc)103 nvkm_uoutp_mthd_infoframe(struct nvkm_outp *outp, void *argv, u32 argc)
104 {
105 struct nvkm_ior *ior = outp->ior;
106 union nvif_outp_infoframe_args *args = argv;
107 ssize_t size = argc - sizeof(*args);
108
109 if (argc < sizeof(args->v0) || args->v0.version != 0)
110 return -ENOSYS;
111 if (!nvkm_head_find(outp->disp, args->v0.head))
112 return -EINVAL;
113
114 switch (ior->func->hdmi ? args->v0.type : 0xff) {
115 case NVIF_OUTP_INFOFRAME_V0_AVI:
116 ior->func->hdmi->infoframe_avi(ior, args->v0.head, &args->v0.data, size);
117 return 0;
118 case NVIF_OUTP_INFOFRAME_V0_VSI:
119 ior->func->hdmi->infoframe_vsi(ior, args->v0.head, &args->v0.data, size);
120 return 0;
121 default:
122 break;
123 }
124
125 return -EINVAL;
126 }
127
128 static int
nvkm_uoutp_mthd_release(struct nvkm_outp * outp,void * argv,u32 argc)129 nvkm_uoutp_mthd_release(struct nvkm_outp *outp, void *argv, u32 argc)
130 {
131 struct nvkm_head *head = outp->asy.head;
132 struct nvkm_ior *ior = outp->ior;
133 union nvif_outp_release_args *args = argv;
134
135 if (argc != sizeof(args->vn))
136 return -ENOSYS;
137
138 if (ior->func->hdmi && head) {
139 ior->func->hdmi->infoframe_avi(ior, head->id, NULL, 0);
140 ior->func->hdmi->infoframe_vsi(ior, head->id, NULL, 0);
141 ior->func->hdmi->ctrl(ior, head->id, false, 0, 0);
142 }
143
144 nvkm_outp_release(outp, NVKM_OUTP_USER);
145 return 0;
146 }
147
148 static int
nvkm_uoutp_mthd_acquire_dp(struct nvkm_outp * outp,u8 dpcd[DP_RECEIVER_CAP_SIZE],u8 link_nr,u8 link_bw,bool hda,bool mst)149 nvkm_uoutp_mthd_acquire_dp(struct nvkm_outp *outp, u8 dpcd[DP_RECEIVER_CAP_SIZE],
150 u8 link_nr, u8 link_bw, bool hda, bool mst)
151 {
152 int ret;
153
154 ret = nvkm_outp_acquire(outp, NVKM_OUTP_USER, hda);
155 if (ret)
156 return ret;
157
158 memcpy(outp->dp.dpcd, dpcd, sizeof(outp->dp.dpcd));
159 outp->dp.lt.nr = link_nr;
160 outp->dp.lt.bw = link_bw;
161 outp->dp.lt.mst = mst;
162 return 0;
163 }
164
165 static int
nvkm_uoutp_mthd_acquire_tmds(struct nvkm_outp * outp,u8 head,u8 hdmi,u8 hdmi_max_ac_packet,u8 hdmi_rekey,u8 hdmi_scdc,u8 hdmi_hda)166 nvkm_uoutp_mthd_acquire_tmds(struct nvkm_outp *outp, u8 head, u8 hdmi, u8 hdmi_max_ac_packet,
167 u8 hdmi_rekey, u8 hdmi_scdc, u8 hdmi_hda)
168 {
169 struct nvkm_ior *ior;
170 int ret;
171
172 if (!(outp->asy.head = nvkm_head_find(outp->disp, head)))
173 return -EINVAL;
174
175 ret = nvkm_outp_acquire(outp, NVKM_OUTP_USER, hdmi && hdmi_hda);
176 if (ret)
177 return ret;
178
179 ior = outp->ior;
180
181 if (hdmi) {
182 if (!ior->func->hdmi ||
183 hdmi_max_ac_packet > 0x1f || hdmi_rekey > 0x7f ||
184 (hdmi_scdc && !ior->func->hdmi->scdc)) {
185 nvkm_outp_release(outp, NVKM_OUTP_USER);
186 return -EINVAL;
187 }
188
189 ior->func->hdmi->ctrl(ior, head, hdmi, hdmi_max_ac_packet, hdmi_rekey);
190 if (ior->func->hdmi->scdc)
191 ior->func->hdmi->scdc(ior, hdmi_scdc);
192 }
193
194 return 0;
195 }
196
197 static int
nvkm_uoutp_mthd_acquire_lvds(struct nvkm_outp * outp,bool dual,bool bpc8)198 nvkm_uoutp_mthd_acquire_lvds(struct nvkm_outp *outp, bool dual, bool bpc8)
199 {
200 if (outp->info.type != DCB_OUTPUT_LVDS)
201 return -EINVAL;
202
203 outp->lvds.dual = dual;
204 outp->lvds.bpc8 = bpc8;
205
206 return nvkm_outp_acquire(outp, NVKM_OUTP_USER, false);
207 }
208
209 static int
nvkm_uoutp_mthd_acquire(struct nvkm_outp * outp,void * argv,u32 argc)210 nvkm_uoutp_mthd_acquire(struct nvkm_outp *outp, void *argv, u32 argc)
211 {
212 union nvif_outp_acquire_args *args = argv;
213 int ret;
214
215 if (argc != sizeof(args->v0) || args->v0.version != 0)
216 return -ENOSYS;
217 if (outp->ior)
218 return -EBUSY;
219
220 switch (args->v0.proto) {
221 case NVIF_OUTP_ACQUIRE_V0_RGB_CRT:
222 ret = nvkm_outp_acquire(outp, NVKM_OUTP_USER, false);
223 break;
224 case NVIF_OUTP_ACQUIRE_V0_TMDS:
225 ret = nvkm_uoutp_mthd_acquire_tmds(outp, args->v0.tmds.head,
226 args->v0.tmds.hdmi,
227 args->v0.tmds.hdmi_max_ac_packet,
228 args->v0.tmds.hdmi_rekey,
229 args->v0.tmds.hdmi_scdc,
230 args->v0.tmds.hdmi_hda);
231 break;
232 case NVIF_OUTP_ACQUIRE_V0_LVDS:
233 ret = nvkm_uoutp_mthd_acquire_lvds(outp, args->v0.lvds.dual, args->v0.lvds.bpc8);
234 break;
235 case NVIF_OUTP_ACQUIRE_V0_DP:
236 ret = nvkm_uoutp_mthd_acquire_dp(outp, args->v0.dp.dpcd,
237 args->v0.dp.link_nr,
238 args->v0.dp.link_bw,
239 args->v0.dp.hda != 0,
240 args->v0.dp.mst != 0);
241 break;
242 default:
243 ret = -EINVAL;
244 break;
245 }
246
247 if (ret)
248 return ret;
249
250 args->v0.or = outp->ior->id;
251 args->v0.link = outp->ior->asy.link;
252 return 0;
253 }
254
255 static int
nvkm_uoutp_mthd_load_detect(struct nvkm_outp * outp,void * argv,u32 argc)256 nvkm_uoutp_mthd_load_detect(struct nvkm_outp *outp, void *argv, u32 argc)
257 {
258 union nvif_outp_load_detect_args *args = argv;
259 int ret;
260
261 if (argc != sizeof(args->v0) || args->v0.version != 0)
262 return -ENOSYS;
263
264 ret = nvkm_outp_acquire(outp, NVKM_OUTP_PRIV, false);
265 if (ret == 0) {
266 if (outp->ior->func->sense) {
267 ret = outp->ior->func->sense(outp->ior, args->v0.data);
268 args->v0.load = ret < 0 ? 0 : ret;
269 } else {
270 ret = -EINVAL;
271 }
272 nvkm_outp_release(outp, NVKM_OUTP_PRIV);
273 }
274
275 return ret;
276 }
277
278 static int
nvkm_uoutp_mthd_acquired(struct nvkm_outp * outp,u32 mthd,void * argv,u32 argc)279 nvkm_uoutp_mthd_acquired(struct nvkm_outp *outp, u32 mthd, void *argv, u32 argc)
280 {
281 switch (mthd) {
282 case NVIF_OUTP_V0_RELEASE : return nvkm_uoutp_mthd_release (outp, argv, argc);
283 case NVIF_OUTP_V0_INFOFRAME : return nvkm_uoutp_mthd_infoframe (outp, argv, argc);
284 case NVIF_OUTP_V0_HDA_ELD : return nvkm_uoutp_mthd_hda_eld (outp, argv, argc);
285 case NVIF_OUTP_V0_DP_RETRAIN : return nvkm_uoutp_mthd_dp_retrain (outp, argv, argc);
286 case NVIF_OUTP_V0_DP_MST_VCPI: return nvkm_uoutp_mthd_dp_mst_vcpi(outp, argv, argc);
287 default:
288 break;
289 }
290
291 return -EINVAL;
292 }
293
294 static int
nvkm_uoutp_mthd_noacquire(struct nvkm_outp * outp,u32 mthd,void * argv,u32 argc)295 nvkm_uoutp_mthd_noacquire(struct nvkm_outp *outp, u32 mthd, void *argv, u32 argc)
296 {
297 switch (mthd) {
298 case NVIF_OUTP_V0_LOAD_DETECT: return nvkm_uoutp_mthd_load_detect(outp, argv, argc);
299 case NVIF_OUTP_V0_ACQUIRE : return nvkm_uoutp_mthd_acquire (outp, argv, argc);
300 case NVIF_OUTP_V0_DP_AUX_PWR : return nvkm_uoutp_mthd_dp_aux_pwr (outp, argv, argc);
301 default:
302 break;
303 }
304
305 return 1;
306 }
307
308 static int
nvkm_uoutp_mthd(struct nvkm_object * object,u32 mthd,void * argv,u32 argc)309 nvkm_uoutp_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc)
310 {
311 struct nvkm_outp *outp = nvkm_uoutp(object);
312 struct nvkm_disp *disp = outp->disp;
313 int ret;
314
315 mutex_lock(&disp->super.mutex);
316
317 ret = nvkm_uoutp_mthd_noacquire(outp, mthd, argv, argc);
318 if (ret <= 0)
319 goto done;
320
321 if (outp->ior)
322 ret = nvkm_uoutp_mthd_acquired(outp, mthd, argv, argc);
323 else
324 ret = -EIO;
325
326 done:
327 mutex_unlock(&disp->super.mutex);
328 return ret;
329 }
330
331 static void *
nvkm_uoutp_dtor(struct nvkm_object * object)332 nvkm_uoutp_dtor(struct nvkm_object *object)
333 {
334 struct nvkm_outp *outp = nvkm_uoutp(object);
335 struct nvkm_disp *disp = outp->disp;
336
337 spin_lock(&disp->client.lock);
338 outp->object.func = NULL;
339 spin_unlock(&disp->client.lock);
340 return NULL;
341 }
342
343 static const struct nvkm_object_func
344 nvkm_uoutp = {
345 .dtor = nvkm_uoutp_dtor,
346 .mthd = nvkm_uoutp_mthd,
347 };
348
349 int
nvkm_uoutp_new(const struct nvkm_oclass * oclass,void * argv,u32 argc,struct nvkm_object ** pobject)350 nvkm_uoutp_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject)
351 {
352 struct nvkm_disp *disp = nvkm_udisp(oclass->parent);
353 struct nvkm_outp *outt, *outp = NULL;
354 union nvif_outp_args *args = argv;
355 int ret;
356
357 if (argc != sizeof(args->v0) || args->v0.version != 0)
358 return -ENOSYS;
359
360 list_for_each_entry(outt, &disp->outps, head) {
361 if (outt->index == args->v0.id) {
362 outp = outt;
363 break;
364 }
365 }
366
367 if (!outp)
368 return -EINVAL;
369
370 ret = -EBUSY;
371 spin_lock(&disp->client.lock);
372 if (!outp->object.func) {
373 nvkm_object_ctor(&nvkm_uoutp, oclass, &outp->object);
374 *pobject = &outp->object;
375 ret = 0;
376 }
377 spin_unlock(&disp->client.lock);
378 return ret;
379 }
380