2 * Copyright 2008 Advanced Micro Devices, Inc.
3 * Copyright 2008 Red Hat Inc.
4 * Copyright 2009 Christian König.
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 * Authors: Christian König
27 #include "radeon_drm.h"
34 enum r600_hdmi_color_format
{
41 * IEC60958 status bits
43 enum r600_hdmi_iec_status_bits
{
44 AUDIO_STATUS_DIG_ENABLE
= 0x01,
45 AUDIO_STATUS_V
= 0x02,
46 AUDIO_STATUS_VCFG
= 0x04,
47 AUDIO_STATUS_EMPHASIS
= 0x08,
48 AUDIO_STATUS_COPYRIGHT
= 0x10,
49 AUDIO_STATUS_NONAUDIO
= 0x20,
50 AUDIO_STATUS_PROFESSIONAL
= 0x40,
51 AUDIO_STATUS_LEVEL
= 0x80
67 /* 32kHz 44.1kHz 48kHz */
68 /* Clock N CTS N CTS N CTS */
69 { 25174, 4576, 28125, 7007, 31250, 6864, 28125 }, /* 25,20/1.001 MHz */
70 { 25200, 4096, 25200, 6272, 28000, 6144, 25200 }, /* 25.20 MHz */
71 { 27000, 4096, 27000, 6272, 30000, 6144, 27000 }, /* 27.00 MHz */
72 { 27027, 4096, 27027, 6272, 30030, 6144, 27027 }, /* 27.00*1.001 MHz */
73 { 54000, 4096, 54000, 6272, 60000, 6144, 54000 }, /* 54.00 MHz */
74 { 54054, 4096, 54054, 6272, 60060, 6144, 54054 }, /* 54.00*1.001 MHz */
75 { 74175, 11648, 210937, 17836, 234375, 11648, 140625 }, /* 74.25/1.001 MHz */
76 { 74250, 4096, 74250, 6272, 82500, 6144, 74250 }, /* 74.25 MHz */
77 { 148351, 11648, 421875, 8918, 234375, 5824, 140625 }, /* 148.50/1.001 MHz */
78 { 148500, 4096, 148500, 6272, 165000, 6144, 148500 }, /* 148.50 MHz */
79 { 0, 4096, 0, 6272, 0, 6144, 0 } /* Other */
83 * calculate CTS value if it's not found in the table
85 static void r600_hdmi_calc_CTS(uint32_t clock
, int *CTS
, int N
, int freq
)
88 *CTS
= clock
* N
/ (128 * freq
) * 1000;
89 DRM_DEBUG("Using ACR timing N=%d CTS=%d for frequency %d\n",
94 * update the N and CTS parameters for a given pixel clock rate
96 static void r600_hdmi_update_ACR(struct drm_encoder
*encoder
, uint32_t clock
)
98 struct drm_device
*dev
= encoder
->dev
;
99 struct radeon_device
*rdev
= dev
->dev_private
;
100 uint32_t offset
= to_radeon_encoder(encoder
)->hdmi_offset
;
105 for (i
= 0; r600_hdmi_ACR
[i
].Clock
!= clock
&& r600_hdmi_ACR
[i
].Clock
!= 0; i
++);
107 CTS
= r600_hdmi_ACR
[i
].CTS_32kHz
;
108 N
= r600_hdmi_ACR
[i
].N_32kHz
;
109 r600_hdmi_calc_CTS(clock
, &CTS
, N
, 32000);
110 WREG32(offset
+R600_HDMI_32kHz_CTS
, CTS
<< 12);
111 WREG32(offset
+R600_HDMI_32kHz_N
, N
);
113 CTS
= r600_hdmi_ACR
[i
].CTS_44_1kHz
;
114 N
= r600_hdmi_ACR
[i
].N_44_1kHz
;
115 r600_hdmi_calc_CTS(clock
, &CTS
, N
, 44100);
116 WREG32(offset
+R600_HDMI_44_1kHz_CTS
, CTS
<< 12);
117 WREG32(offset
+R600_HDMI_44_1kHz_N
, N
);
119 CTS
= r600_hdmi_ACR
[i
].CTS_48kHz
;
120 N
= r600_hdmi_ACR
[i
].N_48kHz
;
121 r600_hdmi_calc_CTS(clock
, &CTS
, N
, 48000);
122 WREG32(offset
+R600_HDMI_48kHz_CTS
, CTS
<< 12);
123 WREG32(offset
+R600_HDMI_48kHz_N
, N
);
127 * calculate the crc for a given info frame
129 static void r600_hdmi_infoframe_checksum(uint8_t packetType
,
130 uint8_t versionNumber
,
135 frame
[0] = packetType
+ versionNumber
+ length
;
136 for (i
= 1; i
<= length
; i
++)
137 frame
[0] += frame
[i
];
138 frame
[0] = 0x100 - frame
[0];
142 * build a HDMI Video Info Frame
144 static void r600_hdmi_videoinfoframe(
145 struct drm_encoder
*encoder
,
146 enum r600_hdmi_color_format color_format
,
147 int active_information_present
,
148 uint8_t active_format_aspect_ratio
,
149 uint8_t scan_information
,
151 uint8_t ex_colorimetry
,
152 uint8_t quantization
,
154 uint8_t picture_aspect_ratio
,
155 uint8_t video_format_identification
,
156 uint8_t pixel_repetition
,
157 uint8_t non_uniform_picture_scaling
,
158 uint8_t bar_info_data_valid
,
165 struct drm_device
*dev
= encoder
->dev
;
166 struct radeon_device
*rdev
= dev
->dev_private
;
167 uint32_t offset
= to_radeon_encoder(encoder
)->hdmi_offset
;
173 (scan_information
& 0x3) |
174 ((bar_info_data_valid
& 0x3) << 2) |
175 ((active_information_present
& 0x1) << 4) |
176 ((color_format
& 0x3) << 5);
178 (active_format_aspect_ratio
& 0xF) |
179 ((picture_aspect_ratio
& 0x3) << 4) |
180 ((colorimetry
& 0x3) << 6);
182 (non_uniform_picture_scaling
& 0x3) |
183 ((quantization
& 0x3) << 2) |
184 ((ex_colorimetry
& 0x7) << 4) |
186 frame
[0x4] = (video_format_identification
& 0x7F);
187 frame
[0x5] = (pixel_repetition
& 0xF);
188 frame
[0x6] = (top_bar
& 0xFF);
189 frame
[0x7] = (top_bar
>> 8);
190 frame
[0x8] = (bottom_bar
& 0xFF);
191 frame
[0x9] = (bottom_bar
>> 8);
192 frame
[0xA] = (left_bar
& 0xFF);
193 frame
[0xB] = (left_bar
>> 8);
194 frame
[0xC] = (right_bar
& 0xFF);
195 frame
[0xD] = (right_bar
>> 8);
197 r600_hdmi_infoframe_checksum(0x82, 0x02, 0x0D, frame
);
199 WREG32(offset
+R600_HDMI_VIDEOINFOFRAME_0
,
200 frame
[0x0] | (frame
[0x1] << 8) | (frame
[0x2] << 16) | (frame
[0x3] << 24));
201 WREG32(offset
+R600_HDMI_VIDEOINFOFRAME_1
,
202 frame
[0x4] | (frame
[0x5] << 8) | (frame
[0x6] << 16) | (frame
[0x7] << 24));
203 WREG32(offset
+R600_HDMI_VIDEOINFOFRAME_2
,
204 frame
[0x8] | (frame
[0x9] << 8) | (frame
[0xA] << 16) | (frame
[0xB] << 24));
205 WREG32(offset
+R600_HDMI_VIDEOINFOFRAME_3
,
206 frame
[0xC] | (frame
[0xD] << 8));
210 * build a Audio Info Frame
212 static void r600_hdmi_audioinfoframe(
213 struct drm_encoder
*encoder
,
214 uint8_t channel_count
,
217 uint8_t sample_frequency
,
219 uint8_t channel_allocation
,
224 struct drm_device
*dev
= encoder
->dev
;
225 struct radeon_device
*rdev
= dev
->dev_private
;
226 uint32_t offset
= to_radeon_encoder(encoder
)->hdmi_offset
;
231 frame
[0x1] = (channel_count
& 0x7) | ((coding_type
& 0xF) << 4);
232 frame
[0x2] = (sample_size
& 0x3) | ((sample_frequency
& 0x7) << 2);
234 frame
[0x4] = channel_allocation
;
235 frame
[0x5] = ((level_shift
& 0xF) << 3) | ((downmix_inhibit
& 0x1) << 7);
242 r600_hdmi_infoframe_checksum(0x84, 0x01, 0x0A, frame
);
244 WREG32(offset
+R600_HDMI_AUDIOINFOFRAME_0
,
245 frame
[0x0] | (frame
[0x1] << 8) | (frame
[0x2] << 16) | (frame
[0x3] << 24));
246 WREG32(offset
+R600_HDMI_AUDIOINFOFRAME_1
,
247 frame
[0x4] | (frame
[0x5] << 8) | (frame
[0x6] << 16) | (frame
[0x8] << 24));
251 * test if audio buffer is filled enough to start playing
253 static int r600_hdmi_is_audio_buffer_filled(struct drm_encoder
*encoder
)
255 struct drm_device
*dev
= encoder
->dev
;
256 struct radeon_device
*rdev
= dev
->dev_private
;
257 uint32_t offset
= to_radeon_encoder(encoder
)->hdmi_offset
;
259 return (RREG32(offset
+R600_HDMI_STATUS
) & 0x10) != 0;
263 * have buffer status changed since last call?
265 int r600_hdmi_buffer_status_changed(struct drm_encoder
*encoder
)
267 struct radeon_encoder
*radeon_encoder
= to_radeon_encoder(encoder
);
270 if (!radeon_encoder
->hdmi_offset
)
273 status
= r600_hdmi_is_audio_buffer_filled(encoder
);
274 result
= radeon_encoder
->hdmi_buffer_status
!= status
;
275 radeon_encoder
->hdmi_buffer_status
= status
;
281 * write the audio workaround status to the hardware
283 void r600_hdmi_audio_workaround(struct drm_encoder
*encoder
)
285 struct drm_device
*dev
= encoder
->dev
;
286 struct radeon_device
*rdev
= dev
->dev_private
;
287 struct radeon_encoder
*radeon_encoder
= to_radeon_encoder(encoder
);
288 uint32_t offset
= radeon_encoder
->hdmi_offset
;
293 if (r600_hdmi_is_audio_buffer_filled(encoder
)) {
294 /* disable audio workaround and start delivering of audio frames */
295 WREG32_P(offset
+R600_HDMI_CNTL
, 0x00000001, ~0x00001001);
297 } else if (radeon_encoder
->hdmi_audio_workaround
) {
298 /* enable audio workaround and start delivering of audio frames */
299 WREG32_P(offset
+R600_HDMI_CNTL
, 0x00001001, ~0x00001001);
302 /* disable audio workaround and stop delivering of audio frames */
303 WREG32_P(offset
+R600_HDMI_CNTL
, 0x00000000, ~0x00001001);
309 * update the info frames with the data from the current display mode
311 void r600_hdmi_setmode(struct drm_encoder
*encoder
, struct drm_display_mode
*mode
)
313 struct drm_device
*dev
= encoder
->dev
;
314 struct radeon_device
*rdev
= dev
->dev_private
;
315 uint32_t offset
= to_radeon_encoder(encoder
)->hdmi_offset
;
317 if (ASIC_IS_DCE4(rdev
))
323 r600_audio_set_clock(encoder
, mode
->clock
);
325 WREG32(offset
+R600_HDMI_UNKNOWN_0
, 0x1000);
326 WREG32(offset
+R600_HDMI_UNKNOWN_1
, 0x0);
327 WREG32(offset
+R600_HDMI_UNKNOWN_2
, 0x1000);
329 r600_hdmi_update_ACR(encoder
, mode
->clock
);
331 WREG32(offset
+R600_HDMI_VIDEOCNTL
, 0x13);
333 WREG32(offset
+R600_HDMI_VERSION
, 0x202);
335 r600_hdmi_videoinfoframe(encoder
, RGB
, 0, 0, 0, 0,
336 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
338 /* it's unknown what these bits do excatly, but it's indeed quite usefull for debugging */
339 WREG32(offset
+R600_HDMI_AUDIO_DEBUG_0
, 0x00FFFFFF);
340 WREG32(offset
+R600_HDMI_AUDIO_DEBUG_1
, 0x007FFFFF);
341 WREG32(offset
+R600_HDMI_AUDIO_DEBUG_2
, 0x00000001);
342 WREG32(offset
+R600_HDMI_AUDIO_DEBUG_3
, 0x00000001);
344 r600_hdmi_audio_workaround(encoder
);
346 /* audio packets per line, does anyone know how to calc this ? */
347 WREG32_P(offset
+R600_HDMI_CNTL
, 0x00040000, ~0x001F0000);
349 /* update? reset? don't realy know */
350 WREG32_P(offset
+R600_HDMI_CNTL
, 0x14000000, ~0x14000000);
354 * update settings with current parameters from audio engine
356 void r600_hdmi_update_audio_settings(struct drm_encoder
*encoder
,
361 uint8_t category_code
)
363 struct drm_device
*dev
= encoder
->dev
;
364 struct radeon_device
*rdev
= dev
->dev_private
;
365 uint32_t offset
= to_radeon_encoder(encoder
)->hdmi_offset
;
372 DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n",
373 r600_hdmi_is_audio_buffer_filled(encoder
) ? "playing" : "stopped",
374 channels
, rate
, bps
);
375 DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n",
376 (int)status_bits
, (int)category_code
);
379 if (status_bits
& AUDIO_STATUS_PROFESSIONAL
)
381 if (status_bits
& AUDIO_STATUS_NONAUDIO
)
383 if (status_bits
& AUDIO_STATUS_COPYRIGHT
)
385 if (status_bits
& AUDIO_STATUS_EMPHASIS
)
388 iec
|= category_code
<< 8;
391 case 32000: iec
|= 0x3 << 24; break;
392 case 44100: iec
|= 0x0 << 24; break;
393 case 88200: iec
|= 0x8 << 24; break;
394 case 176400: iec
|= 0xc << 24; break;
395 case 48000: iec
|= 0x2 << 24; break;
396 case 96000: iec
|= 0xa << 24; break;
397 case 192000: iec
|= 0xe << 24; break;
400 WREG32(offset
+R600_HDMI_IEC60958_1
, iec
);
404 case 16: iec
|= 0x2; break;
405 case 20: iec
|= 0x3; break;
406 case 24: iec
|= 0xb; break;
408 if (status_bits
& AUDIO_STATUS_V
)
411 WREG32_P(offset
+R600_HDMI_IEC60958_2
, iec
, ~0x5000f);
413 /* 0x021 or 0x031 sets the audio frame length */
414 WREG32(offset
+R600_HDMI_AUDIOCNTL
, 0x31);
415 r600_hdmi_audioinfoframe(encoder
, channels
-1, 0, 0, 0, 0, 0, 0, 0);
417 r600_hdmi_audio_workaround(encoder
);
419 /* update? reset? don't realy know */
420 WREG32_P(offset
+R600_HDMI_CNTL
, 0x04000000, ~0x04000000);
423 static int r600_hdmi_find_free_block(struct drm_device
*dev
)
425 struct radeon_device
*rdev
= dev
->dev_private
;
426 struct drm_encoder
*encoder
;
427 struct radeon_encoder
*radeon_encoder
;
428 bool free_blocks
[3] = { true, true, true };
430 list_for_each_entry(encoder
, &dev
->mode_config
.encoder_list
, head
) {
431 radeon_encoder
= to_radeon_encoder(encoder
);
432 switch (radeon_encoder
->hdmi_offset
) {
433 case R600_HDMI_BLOCK1
:
434 free_blocks
[0] = false;
436 case R600_HDMI_BLOCK2
:
437 free_blocks
[1] = false;
439 case R600_HDMI_BLOCK3
:
440 free_blocks
[2] = false;
445 if (rdev
->family
== CHIP_RS600
|| rdev
->family
== CHIP_RS690
) {
446 return free_blocks
[0] ? R600_HDMI_BLOCK1
: 0;
447 } else if (rdev
->family
>= CHIP_R600
) {
449 return R600_HDMI_BLOCK1
;
450 else if (free_blocks
[1])
451 return R600_HDMI_BLOCK2
;
456 static void r600_hdmi_assign_block(struct drm_encoder
*encoder
)
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
;
464 dev_err(rdev
->dev
, "Enabling HDMI on non-dig encoder\n");
468 if (ASIC_IS_DCE4(rdev
)) {
470 } else if (ASIC_IS_DCE3(rdev
)) {
471 radeon_encoder
->hdmi_offset
= dig
->dig_encoder
?
472 R600_HDMI_BLOCK3
: R600_HDMI_BLOCK1
;
473 if (ASIC_IS_DCE32(rdev
))
474 radeon_encoder
->hdmi_config_offset
= dig
->dig_encoder
?
475 R600_HDMI_CONFIG2
: R600_HDMI_CONFIG1
;
476 } else if (rdev
->family
>= CHIP_R600
) {
477 radeon_encoder
->hdmi_offset
= r600_hdmi_find_free_block(dev
);
482 * enable the HDMI engine
484 void r600_hdmi_enable(struct drm_encoder
*encoder
)
486 struct drm_device
*dev
= encoder
->dev
;
487 struct radeon_device
*rdev
= dev
->dev_private
;
488 struct radeon_encoder
*radeon_encoder
= to_radeon_encoder(encoder
);
490 if (ASIC_IS_DCE4(rdev
))
493 if (!radeon_encoder
->hdmi_offset
) {
494 r600_hdmi_assign_block(encoder
);
495 if (!radeon_encoder
->hdmi_offset
) {
496 dev_warn(rdev
->dev
, "Could not find HDMI block for "
497 "0x%x encoder\n", radeon_encoder
->encoder_id
);
502 if (ASIC_IS_DCE32(rdev
) && !ASIC_IS_DCE4(rdev
)) {
503 WREG32_P(radeon_encoder
->hdmi_config_offset
+ 0x4, 0x1, ~0x1);
504 } else if (rdev
->family
>= CHIP_R600
&& !ASIC_IS_DCE3(rdev
)) {
505 int offset
= radeon_encoder
->hdmi_offset
;
506 switch (radeon_encoder
->encoder_id
) {
507 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1
:
508 WREG32_P(AVIVO_TMDSA_CNTL
, 0x4, ~0x4);
509 WREG32(offset
+ R600_HDMI_ENABLE
, 0x101);
511 case ENCODER_OBJECT_ID_INTERNAL_LVTM1
:
512 WREG32_P(AVIVO_LVTMA_CNTL
, 0x4, ~0x4);
513 WREG32(offset
+ R600_HDMI_ENABLE
, 0x105);
516 dev_err(rdev
->dev
, "Unknown HDMI output type\n");
521 DRM_DEBUG("Enabling HDMI interface @ 0x%04X for encoder 0x%x\n",
522 radeon_encoder
->hdmi_offset
, radeon_encoder
->encoder_id
);
526 * disable the HDMI engine
528 void r600_hdmi_disable(struct drm_encoder
*encoder
)
530 struct drm_device
*dev
= encoder
->dev
;
531 struct radeon_device
*rdev
= dev
->dev_private
;
532 struct radeon_encoder
*radeon_encoder
= to_radeon_encoder(encoder
);
534 if (ASIC_IS_DCE4(rdev
))
537 if (!radeon_encoder
->hdmi_offset
) {
538 dev_err(rdev
->dev
, "Disabling not enabled HDMI\n");
542 DRM_DEBUG("Disabling HDMI interface @ 0x%04X for encoder 0x%x\n",
543 radeon_encoder
->hdmi_offset
, radeon_encoder
->encoder_id
);
545 if (ASIC_IS_DCE32(rdev
) && !ASIC_IS_DCE4(rdev
)) {
546 WREG32_P(radeon_encoder
->hdmi_config_offset
+ 0x4, 0, ~0x1);
547 } else if (rdev
->family
>= CHIP_R600
&& !ASIC_IS_DCE3(rdev
)) {
548 int offset
= radeon_encoder
->hdmi_offset
;
549 switch (radeon_encoder
->encoder_id
) {
550 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1
:
551 WREG32_P(AVIVO_TMDSA_CNTL
, 0, ~0x4);
552 WREG32(offset
+ R600_HDMI_ENABLE
, 0);
554 case ENCODER_OBJECT_ID_INTERNAL_LVTM1
:
555 WREG32_P(AVIVO_LVTMA_CNTL
, 0, ~0x4);
556 WREG32(offset
+ R600_HDMI_ENABLE
, 0);
559 dev_err(rdev
->dev
, "Unknown HDMI output type\n");
564 radeon_encoder
->hdmi_offset
= 0;
565 radeon_encoder
->hdmi_config_offset
= 0;