Merge branch 'next' into for-linus
[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / radeon / r600_hdmi.c
1 /*
2  * Copyright 2008 Advanced Micro Devices, Inc.
3  * Copyright 2008 Red Hat Inc.
4  * Copyright 2009 Christian König.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the "Software"),
8  * to deal in the Software without restriction, including without limitation
9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10  * and/or sell copies of the Software, and to permit persons to whom the
11  * Software is furnished to do so, subject to the following conditions:
12  *
13  * The above copyright notice and this permission notice shall be included in
14  * all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22  * OTHER DEALINGS IN THE SOFTWARE.
23  *
24  * Authors: Christian König
25  */
26 #include <linux/hdmi.h>
27 #include <linux/gcd.h>
28 #include <drm/drmP.h>
29 #include <drm/radeon_drm.h>
30 #include "radeon.h"
31 #include "radeon_asic.h"
32 #include "r600d.h"
33 #include "atom.h"
34
35 /*
36  * HDMI color format
37  */
38 enum r600_hdmi_color_format {
39         RGB = 0,
40         YCC_422 = 1,
41         YCC_444 = 2
42 };
43
44 /*
45  * IEC60958 status bits
46  */
47 enum r600_hdmi_iec_status_bits {
48         AUDIO_STATUS_DIG_ENABLE   = 0x01,
49         AUDIO_STATUS_V            = 0x02,
50         AUDIO_STATUS_VCFG         = 0x04,
51         AUDIO_STATUS_EMPHASIS     = 0x08,
52         AUDIO_STATUS_COPYRIGHT    = 0x10,
53         AUDIO_STATUS_NONAUDIO     = 0x20,
54         AUDIO_STATUS_PROFESSIONAL = 0x40,
55         AUDIO_STATUS_LEVEL        = 0x80
56 };
57
58 static const struct radeon_hdmi_acr r600_hdmi_predefined_acr[] = {
59     /*       32kHz        44.1kHz       48kHz    */
60     /* Clock      N     CTS      N     CTS      N     CTS */
61     {  25175,  4096,  25175, 28224, 125875,  6144,  25175 }, /*  25,20/1.001 MHz */
62     {  25200,  4096,  25200,  6272,  28000,  6144,  25200 }, /*  25.20       MHz */
63     {  27000,  4096,  27000,  6272,  30000,  6144,  27000 }, /*  27.00       MHz */
64     {  27027,  4096,  27027,  6272,  30030,  6144,  27027 }, /*  27.00*1.001 MHz */
65     {  54000,  4096,  54000,  6272,  60000,  6144,  54000 }, /*  54.00       MHz */
66     {  54054,  4096,  54054,  6272,  60060,  6144,  54054 }, /*  54.00*1.001 MHz */
67     {  74176,  4096,  74176,  5733,  75335,  6144,  74176 }, /*  74.25/1.001 MHz */
68     {  74250,  4096,  74250,  6272,  82500,  6144,  74250 }, /*  74.25       MHz */
69     { 148352,  4096, 148352,  5733, 150670,  6144, 148352 }, /* 148.50/1.001 MHz */
70     { 148500,  4096, 148500,  6272, 165000,  6144, 148500 }, /* 148.50       MHz */
71 };
72
73
74 /*
75  * calculate CTS and N values if they are not found in the table
76  */
77 static void r600_hdmi_calc_cts(uint32_t clock, int *CTS, int *N, int freq)
78 {
79         int n, cts;
80         unsigned long div, mul;
81
82         /* Safe, but overly large values */
83         n = 128 * freq;
84         cts = clock * 1000;
85
86         /* Smallest valid fraction */
87         div = gcd(n, cts);
88
89         n /= div;
90         cts /= div;
91
92         /*
93          * The optimal N is 128*freq/1000. Calculate the closest larger
94          * value that doesn't truncate any bits.
95          */
96         mul = ((128*freq/1000) + (n-1))/n;
97
98         n *= mul;
99         cts *= mul;
100
101         /* Check that we are in spec (not always possible) */
102         if (n < (128*freq/1500))
103                 printk(KERN_WARNING "Calculated ACR N value is too small. You may experience audio problems.\n");
104         if (n > (128*freq/300))
105                 printk(KERN_WARNING "Calculated ACR N value is too large. You may experience audio problems.\n");
106
107         *N = n;
108         *CTS = cts;
109
110         DRM_DEBUG("Calculated ACR timing N=%d CTS=%d for frequency %d\n",
111                   *N, *CTS, freq);
112 }
113
114 struct radeon_hdmi_acr r600_hdmi_acr(uint32_t clock)
115 {
116         struct radeon_hdmi_acr res;
117         u8 i;
118
119         /* Precalculated values for common clocks */
120         for (i = 0; i < ARRAY_SIZE(r600_hdmi_predefined_acr); i++) {
121                 if (r600_hdmi_predefined_acr[i].clock == clock)
122                         return r600_hdmi_predefined_acr[i];
123         }
124
125         /* And odd clocks get manually calculated */
126         r600_hdmi_calc_cts(clock, &res.cts_32khz, &res.n_32khz, 32000);
127         r600_hdmi_calc_cts(clock, &res.cts_44_1khz, &res.n_44_1khz, 44100);
128         r600_hdmi_calc_cts(clock, &res.cts_48khz, &res.n_48khz, 48000);
129
130         return res;
131 }
132
133 /*
134  * update the N and CTS parameters for a given pixel clock rate
135  */
136 void r600_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)
137 {
138         struct drm_device *dev = encoder->dev;
139         struct radeon_device *rdev = dev->dev_private;
140         struct radeon_hdmi_acr acr = r600_hdmi_acr(clock);
141         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
142         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
143         uint32_t offset = dig->afmt->offset;
144
145         WREG32_P(HDMI0_ACR_32_0 + offset,
146                  HDMI0_ACR_CTS_32(acr.cts_32khz),
147                  ~HDMI0_ACR_CTS_32_MASK);
148         WREG32_P(HDMI0_ACR_32_1 + offset,
149                  HDMI0_ACR_N_32(acr.n_32khz),
150                  ~HDMI0_ACR_N_32_MASK);
151
152         WREG32_P(HDMI0_ACR_44_0 + offset,
153                  HDMI0_ACR_CTS_44(acr.cts_44_1khz),
154                  ~HDMI0_ACR_CTS_44_MASK);
155         WREG32_P(HDMI0_ACR_44_1 + offset,
156                  HDMI0_ACR_N_44(acr.n_44_1khz),
157                  ~HDMI0_ACR_N_44_MASK);
158
159         WREG32_P(HDMI0_ACR_48_0 + offset,
160                  HDMI0_ACR_CTS_48(acr.cts_48khz),
161                  ~HDMI0_ACR_CTS_48_MASK);
162         WREG32_P(HDMI0_ACR_48_1 + offset,
163                  HDMI0_ACR_N_48(acr.n_48khz),
164                  ~HDMI0_ACR_N_48_MASK);
165 }
166
167 /*
168  * build a HDMI Video Info Frame
169  */
170 void r600_hdmi_update_avi_infoframe(struct drm_encoder *encoder, void *buffer,
171                                     size_t size)
172 {
173         struct drm_device *dev = encoder->dev;
174         struct radeon_device *rdev = dev->dev_private;
175         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
176         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
177         uint32_t offset = dig->afmt->offset;
178         uint8_t *frame = buffer + 3;
179         uint8_t *header = buffer;
180
181         WREG32(HDMI0_AVI_INFO0 + offset,
182                 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
183         WREG32(HDMI0_AVI_INFO1 + offset,
184                 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
185         WREG32(HDMI0_AVI_INFO2 + offset,
186                 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
187         WREG32(HDMI0_AVI_INFO3 + offset,
188                 frame[0xC] | (frame[0xD] << 8) | (header[1] << 24));
189 }
190
191 /*
192  * build a Audio Info Frame
193  */
194 static void r600_hdmi_update_audio_infoframe(struct drm_encoder *encoder,
195                                              const void *buffer, size_t size)
196 {
197         struct drm_device *dev = encoder->dev;
198         struct radeon_device *rdev = dev->dev_private;
199         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
200         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
201         uint32_t offset = dig->afmt->offset;
202         const u8 *frame = buffer + 3;
203
204         WREG32(HDMI0_AUDIO_INFO0 + offset,
205                 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
206         WREG32(HDMI0_AUDIO_INFO1 + offset,
207                 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24));
208 }
209
210 /*
211  * test if audio buffer is filled enough to start playing
212  */
213 static bool r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder)
214 {
215         struct drm_device *dev = encoder->dev;
216         struct radeon_device *rdev = dev->dev_private;
217         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
218         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
219         uint32_t offset = dig->afmt->offset;
220
221         return (RREG32(HDMI0_STATUS + offset) & 0x10) != 0;
222 }
223
224 /*
225  * have buffer status changed since last call?
226  */
227 int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder)
228 {
229         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
230         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
231         int status, result;
232
233         if (!dig->afmt || !dig->afmt->enabled)
234                 return 0;
235
236         status = r600_hdmi_is_audio_buffer_filled(encoder);
237         result = dig->afmt->last_buffer_filled_status != status;
238         dig->afmt->last_buffer_filled_status = status;
239
240         return result;
241 }
242
243 /*
244  * write the audio workaround status to the hardware
245  */
246 void r600_hdmi_audio_workaround(struct drm_encoder *encoder)
247 {
248         struct drm_device *dev = encoder->dev;
249         struct radeon_device *rdev = dev->dev_private;
250         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
251         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
252         uint32_t offset = dig->afmt->offset;
253         bool hdmi_audio_workaround = false; /* FIXME */
254         u32 value;
255
256         if (!hdmi_audio_workaround ||
257             r600_hdmi_is_audio_buffer_filled(encoder))
258                 value = 0; /* disable workaround */
259         else
260                 value = HDMI0_AUDIO_TEST_EN; /* enable workaround */
261         WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset,
262                  value, ~HDMI0_AUDIO_TEST_EN);
263 }
264
265 void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock)
266 {
267         struct drm_device *dev = encoder->dev;
268         struct radeon_device *rdev = dev->dev_private;
269         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
270         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
271         u32 base_rate = 24000;
272         u32 max_ratio = clock / base_rate;
273         u32 dto_phase;
274         u32 dto_modulo = clock;
275         u32 wallclock_ratio;
276         u32 dto_cntl;
277
278         if (!dig || !dig->afmt)
279                 return;
280
281         if (max_ratio >= 8) {
282                 dto_phase = 192 * 1000;
283                 wallclock_ratio = 3;
284         } else if (max_ratio >= 4) {
285                 dto_phase = 96 * 1000;
286                 wallclock_ratio = 2;
287         } else if (max_ratio >= 2) {
288                 dto_phase = 48 * 1000;
289                 wallclock_ratio = 1;
290         } else {
291                 dto_phase = 24 * 1000;
292                 wallclock_ratio = 0;
293         }
294
295         /* there are two DTOs selected by DCCG_AUDIO_DTO_SELECT.
296          * doesn't matter which one you use.  Just use the first one.
297          */
298         /* XXX two dtos; generally use dto0 for hdmi */
299         /* Express [24MHz / target pixel clock] as an exact rational
300          * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
301          * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
302          */
303         if (ASIC_IS_DCE32(rdev)) {
304                 if (dig->dig_encoder == 0) {
305                         dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
306                         dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
307                         WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl);
308                         WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
309                         WREG32(DCCG_AUDIO_DTO0_MODULE, dto_modulo);
310                         WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */
311                 } else {
312                         dto_cntl = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
313                         dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
314                         WREG32(DCCG_AUDIO_DTO1_CNTL, dto_cntl);
315                         WREG32(DCCG_AUDIO_DTO1_PHASE, dto_phase);
316                         WREG32(DCCG_AUDIO_DTO1_MODULE, dto_modulo);
317                         WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
318                 }
319         } else {
320                 /* according to the reg specs, this should DCE3.2 only, but in
321                  * practice it seems to cover DCE2.0/3.0/3.1 as well.
322                  */
323                 if (dig->dig_encoder == 0) {
324                         WREG32(DCCG_AUDIO_DTO0_PHASE, base_rate * 100);
325                         WREG32(DCCG_AUDIO_DTO0_MODULE, clock * 100);
326                         WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */
327                 } else {
328                         WREG32(DCCG_AUDIO_DTO1_PHASE, base_rate * 100);
329                         WREG32(DCCG_AUDIO_DTO1_MODULE, clock * 100);
330                         WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
331                 }
332         }
333 }
334
335 /*
336  * update the info frames with the data from the current display mode
337  */
338 void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
339 {
340         struct drm_device *dev = encoder->dev;
341         struct radeon_device *rdev = dev->dev_private;
342         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
343         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
344         u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
345         struct hdmi_avi_infoframe frame;
346         uint32_t offset;
347         uint32_t acr_ctl;
348         ssize_t err;
349
350         if (!dig || !dig->afmt)
351                 return;
352
353         /* Silent, r600_hdmi_enable will raise WARN for us */
354         if (!dig->afmt->enabled)
355                 return;
356         offset = dig->afmt->offset;
357
358         /* disable audio prior to setting up hw */
359         dig->afmt->pin = r600_audio_get_pin(rdev);
360         r600_audio_enable(rdev, dig->afmt->pin, false);
361
362         r600_audio_set_dto(encoder, mode->clock);
363
364         WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset,
365                  HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */
366                  HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */
367                  HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */
368                  HDMI0_60958_CS_UPDATE, /* allow 60958 channel status fields to be updated */
369                  ~(HDMI0_AUDIO_SAMPLE_SEND |
370                    HDMI0_AUDIO_DELAY_EN_MASK |
371                    HDMI0_AUDIO_PACKETS_PER_LINE_MASK |
372                    HDMI0_60958_CS_UPDATE));
373
374         /* DCE 3.0 uses register that's normally for CRC_CONTROL */
375         acr_ctl = ASIC_IS_DCE3(rdev) ? DCE3_HDMI0_ACR_PACKET_CONTROL :
376                                        HDMI0_ACR_PACKET_CONTROL;
377         WREG32_P(acr_ctl + offset,
378                  HDMI0_ACR_SOURCE | /* select SW CTS value - XXX verify that hw CTS works on all families */
379                  HDMI0_ACR_AUTO_SEND, /* allow hw to sent ACR packets when required */
380                  ~(HDMI0_ACR_SOURCE |
381                    HDMI0_ACR_AUTO_SEND));
382
383         WREG32_OR(HDMI0_VBI_PACKET_CONTROL + offset,
384                   HDMI0_NULL_SEND | /* send null packets when required */
385                   HDMI0_GC_SEND | /* send general control packets */
386                   HDMI0_GC_CONT); /* send general control packets every frame */
387
388         WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset,
389                   HDMI0_AVI_INFO_SEND | /* enable AVI info frames */
390                   HDMI0_AVI_INFO_CONT | /* send AVI info frames every frame/field */
391                   HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
392                   HDMI0_AUDIO_INFO_UPDATE); /* required for audio info values to be updated */
393
394         WREG32_P(HDMI0_INFOFRAME_CONTROL1 + offset,
395                  HDMI0_AVI_INFO_LINE(2) | /* anything other than 0 */
396                  HDMI0_AUDIO_INFO_LINE(2), /* anything other than 0 */
397                  ~(HDMI0_AVI_INFO_LINE_MASK |
398                    HDMI0_AUDIO_INFO_LINE_MASK));
399
400         WREG32_AND(HDMI0_GC + offset,
401                    ~HDMI0_GC_AVMUTE); /* unset HDMI0_GC_AVMUTE */
402
403         err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
404         if (err < 0) {
405                 DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
406                 return;
407         }
408
409         err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
410         if (err < 0) {
411                 DRM_ERROR("failed to pack AVI infoframe: %zd\n", err);
412                 return;
413         }
414
415         r600_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer));
416
417         /* fglrx duplicates INFOFRAME_CONTROL0 & INFOFRAME_CONTROL1 ops here */
418
419         WREG32_AND(HDMI0_GENERIC_PACKET_CONTROL + offset,
420                    ~(HDMI0_GENERIC0_SEND |
421                      HDMI0_GENERIC0_CONT |
422                      HDMI0_GENERIC0_UPDATE |
423                      HDMI0_GENERIC1_SEND |
424                      HDMI0_GENERIC1_CONT |
425                      HDMI0_GENERIC0_LINE_MASK |
426                      HDMI0_GENERIC1_LINE_MASK));
427
428         r600_hdmi_update_ACR(encoder, mode->clock);
429
430         WREG32_P(HDMI0_60958_0 + offset,
431                  HDMI0_60958_CS_CHANNEL_NUMBER_L(1),
432                  ~(HDMI0_60958_CS_CHANNEL_NUMBER_L_MASK |
433                    HDMI0_60958_CS_CLOCK_ACCURACY_MASK));
434
435         WREG32_P(HDMI0_60958_1 + offset,
436                  HDMI0_60958_CS_CHANNEL_NUMBER_R(2),
437                  ~HDMI0_60958_CS_CHANNEL_NUMBER_R_MASK);
438
439         /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
440         WREG32(HDMI0_RAMP_CONTROL0 + offset, 0x00FFFFFF);
441         WREG32(HDMI0_RAMP_CONTROL1 + offset, 0x007FFFFF);
442         WREG32(HDMI0_RAMP_CONTROL2 + offset, 0x00000001);
443         WREG32(HDMI0_RAMP_CONTROL3 + offset, 0x00000001);
444
445         /* enable audio after to setting up hw */
446         r600_audio_enable(rdev, dig->afmt->pin, true);
447 }
448
449 /**
450  * r600_hdmi_update_audio_settings - Update audio infoframe
451  *
452  * @encoder: drm encoder
453  *
454  * Gets info about current audio stream and updates audio infoframe.
455  */
456 void r600_hdmi_update_audio_settings(struct drm_encoder *encoder)
457 {
458         struct drm_device *dev = encoder->dev;
459         struct radeon_device *rdev = dev->dev_private;
460         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
461         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
462         struct r600_audio_pin audio = r600_audio_status(rdev);
463         uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
464         struct hdmi_audio_infoframe frame;
465         uint32_t offset;
466         uint32_t value;
467         ssize_t err;
468
469         if (!dig->afmt || !dig->afmt->enabled)
470                 return;
471         offset = dig->afmt->offset;
472
473         DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n",
474                  r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped",
475                   audio.channels, audio.rate, audio.bits_per_sample);
476         DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n",
477                   (int)audio.status_bits, (int)audio.category_code);
478
479         err = hdmi_audio_infoframe_init(&frame);
480         if (err < 0) {
481                 DRM_ERROR("failed to setup audio infoframe\n");
482                 return;
483         }
484
485         frame.channels = audio.channels;
486
487         err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
488         if (err < 0) {
489                 DRM_ERROR("failed to pack audio infoframe\n");
490                 return;
491         }
492
493         value = RREG32(HDMI0_AUDIO_PACKET_CONTROL + offset);
494         if (value & HDMI0_AUDIO_TEST_EN)
495                 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,
496                        value & ~HDMI0_AUDIO_TEST_EN);
497
498         WREG32_OR(HDMI0_CONTROL + offset,
499                   HDMI0_ERROR_ACK);
500
501         WREG32_AND(HDMI0_INFOFRAME_CONTROL0 + offset,
502                    ~HDMI0_AUDIO_INFO_SOURCE);
503
504         r600_hdmi_update_audio_infoframe(encoder, buffer, sizeof(buffer));
505
506         WREG32_OR(HDMI0_INFOFRAME_CONTROL0 + offset,
507                   HDMI0_AUDIO_INFO_CONT |
508                   HDMI0_AUDIO_INFO_UPDATE);
509 }
510
511 /*
512  * enable the HDMI engine
513  */
514 void r600_hdmi_enable(struct drm_encoder *encoder, bool enable)
515 {
516         struct drm_device *dev = encoder->dev;
517         struct radeon_device *rdev = dev->dev_private;
518         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
519         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
520         u32 hdmi = HDMI0_ERROR_ACK;
521
522         if (!dig || !dig->afmt)
523                 return;
524
525         /* Silent, r600_hdmi_enable will raise WARN for us */
526         if (enable && dig->afmt->enabled)
527                 return;
528         if (!enable && !dig->afmt->enabled)
529                 return;
530
531         /* Older chipsets require setting HDMI and routing manually */
532         if (!ASIC_IS_DCE3(rdev)) {
533                 if (enable)
534                         hdmi |= HDMI0_ENABLE;
535                 switch (radeon_encoder->encoder_id) {
536                 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
537                         if (enable) {
538                                 WREG32_OR(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN);
539                                 hdmi |= HDMI0_STREAM(HDMI0_STREAM_TMDSA);
540                         } else {
541                                 WREG32_AND(AVIVO_TMDSA_CNTL, ~AVIVO_TMDSA_CNTL_HDMI_EN);
542                         }
543                         break;
544                 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
545                         if (enable) {
546                                 WREG32_OR(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN);
547                                 hdmi |= HDMI0_STREAM(HDMI0_STREAM_LVTMA);
548                         } else {
549                                 WREG32_AND(AVIVO_LVTMA_CNTL, ~AVIVO_LVTMA_CNTL_HDMI_EN);
550                         }
551                         break;
552                 case ENCODER_OBJECT_ID_INTERNAL_DDI:
553                         if (enable) {
554                                 WREG32_OR(DDIA_CNTL, DDIA_HDMI_EN);
555                                 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DDIA);
556                         } else {
557                                 WREG32_AND(DDIA_CNTL, ~DDIA_HDMI_EN);
558                         }
559                         break;
560                 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
561                         if (enable)
562                                 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DVOA);
563                         break;
564                 default:
565                         dev_err(rdev->dev, "Invalid encoder for HDMI: 0x%X\n",
566                                 radeon_encoder->encoder_id);
567                         break;
568                 }
569                 WREG32(HDMI0_CONTROL + dig->afmt->offset, hdmi);
570         }
571
572         if (rdev->irq.installed) {
573                 /* if irq is available use it */
574                 /* XXX: shouldn't need this on any asics.  Double check DCE2/3 */
575                 if (enable)
576                         radeon_irq_kms_enable_afmt(rdev, dig->afmt->id);
577                 else
578                         radeon_irq_kms_disable_afmt(rdev, dig->afmt->id);
579         }
580
581         dig->afmt->enabled = enable;
582
583         DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
584                   enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);
585 }
586