Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
[linux-btrfs-devel.git] / drivers / gpu / drm / radeon / r600_hdmi.c
blobf5ac7e788d813b9b744c08cdbc0cee72c0d0ec09
1 /*
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
26 #include "drmP.h"
27 #include "radeon_drm.h"
28 #include "radeon.h"
29 #include "radeon_asic.h"
30 #include "atom.h"
33 * HDMI color format
35 enum r600_hdmi_color_format {
36 RGB = 0,
37 YCC_422 = 1,
38 YCC_444 = 2
42 * IEC60958 status bits
44 enum r600_hdmi_iec_status_bits {
45 AUDIO_STATUS_DIG_ENABLE = 0x01,
46 AUDIO_STATUS_V = 0x02,
47 AUDIO_STATUS_VCFG = 0x04,
48 AUDIO_STATUS_EMPHASIS = 0x08,
49 AUDIO_STATUS_COPYRIGHT = 0x10,
50 AUDIO_STATUS_NONAUDIO = 0x20,
51 AUDIO_STATUS_PROFESSIONAL = 0x40,
52 AUDIO_STATUS_LEVEL = 0x80
55 struct {
56 uint32_t Clock;
58 int N_32kHz;
59 int CTS_32kHz;
61 int N_44_1kHz;
62 int CTS_44_1kHz;
64 int N_48kHz;
65 int CTS_48kHz;
67 } r600_hdmi_ACR[] = {
68 /* 32kHz 44.1kHz 48kHz */
69 /* Clock N CTS N CTS N CTS */
70 { 25174, 4576, 28125, 7007, 31250, 6864, 28125 }, /* 25,20/1.001 MHz */
71 { 25200, 4096, 25200, 6272, 28000, 6144, 25200 }, /* 25.20 MHz */
72 { 27000, 4096, 27000, 6272, 30000, 6144, 27000 }, /* 27.00 MHz */
73 { 27027, 4096, 27027, 6272, 30030, 6144, 27027 }, /* 27.00*1.001 MHz */
74 { 54000, 4096, 54000, 6272, 60000, 6144, 54000 }, /* 54.00 MHz */
75 { 54054, 4096, 54054, 6272, 60060, 6144, 54054 }, /* 54.00*1.001 MHz */
76 { 74175, 11648, 210937, 17836, 234375, 11648, 140625 }, /* 74.25/1.001 MHz */
77 { 74250, 4096, 74250, 6272, 82500, 6144, 74250 }, /* 74.25 MHz */
78 { 148351, 11648, 421875, 8918, 234375, 5824, 140625 }, /* 148.50/1.001 MHz */
79 { 148500, 4096, 148500, 6272, 165000, 6144, 148500 }, /* 148.50 MHz */
80 { 0, 4096, 0, 6272, 0, 6144, 0 } /* Other */
84 * calculate CTS value if it's not found in the table
86 static void r600_hdmi_calc_CTS(uint32_t clock, int *CTS, int N, int freq)
88 if (*CTS == 0)
89 *CTS = clock * N / (128 * freq) * 1000;
90 DRM_DEBUG("Using ACR timing N=%d CTS=%d for frequency %d\n",
91 N, *CTS, freq);
95 * update the N and CTS parameters for a given pixel clock rate
97 static void r600_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)
99 struct drm_device *dev = encoder->dev;
100 struct radeon_device *rdev = dev->dev_private;
101 uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
102 int CTS;
103 int N;
104 int i;
106 for (i = 0; r600_hdmi_ACR[i].Clock != clock && r600_hdmi_ACR[i].Clock != 0; i++);
108 CTS = r600_hdmi_ACR[i].CTS_32kHz;
109 N = r600_hdmi_ACR[i].N_32kHz;
110 r600_hdmi_calc_CTS(clock, &CTS, N, 32000);
111 WREG32(offset+R600_HDMI_32kHz_CTS, CTS << 12);
112 WREG32(offset+R600_HDMI_32kHz_N, N);
114 CTS = r600_hdmi_ACR[i].CTS_44_1kHz;
115 N = r600_hdmi_ACR[i].N_44_1kHz;
116 r600_hdmi_calc_CTS(clock, &CTS, N, 44100);
117 WREG32(offset+R600_HDMI_44_1kHz_CTS, CTS << 12);
118 WREG32(offset+R600_HDMI_44_1kHz_N, N);
120 CTS = r600_hdmi_ACR[i].CTS_48kHz;
121 N = r600_hdmi_ACR[i].N_48kHz;
122 r600_hdmi_calc_CTS(clock, &CTS, N, 48000);
123 WREG32(offset+R600_HDMI_48kHz_CTS, CTS << 12);
124 WREG32(offset+R600_HDMI_48kHz_N, N);
128 * calculate the crc for a given info frame
130 static void r600_hdmi_infoframe_checksum(uint8_t packetType,
131 uint8_t versionNumber,
132 uint8_t length,
133 uint8_t *frame)
135 int i;
136 frame[0] = packetType + versionNumber + length;
137 for (i = 1; i <= length; i++)
138 frame[0] += frame[i];
139 frame[0] = 0x100 - frame[0];
143 * build a HDMI Video Info Frame
145 static void r600_hdmi_videoinfoframe(
146 struct drm_encoder *encoder,
147 enum r600_hdmi_color_format color_format,
148 int active_information_present,
149 uint8_t active_format_aspect_ratio,
150 uint8_t scan_information,
151 uint8_t colorimetry,
152 uint8_t ex_colorimetry,
153 uint8_t quantization,
154 int ITC,
155 uint8_t picture_aspect_ratio,
156 uint8_t video_format_identification,
157 uint8_t pixel_repetition,
158 uint8_t non_uniform_picture_scaling,
159 uint8_t bar_info_data_valid,
160 uint16_t top_bar,
161 uint16_t bottom_bar,
162 uint16_t left_bar,
163 uint16_t right_bar
166 struct drm_device *dev = encoder->dev;
167 struct radeon_device *rdev = dev->dev_private;
168 uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
170 uint8_t frame[14];
172 frame[0x0] = 0;
173 frame[0x1] =
174 (scan_information & 0x3) |
175 ((bar_info_data_valid & 0x3) << 2) |
176 ((active_information_present & 0x1) << 4) |
177 ((color_format & 0x3) << 5);
178 frame[0x2] =
179 (active_format_aspect_ratio & 0xF) |
180 ((picture_aspect_ratio & 0x3) << 4) |
181 ((colorimetry & 0x3) << 6);
182 frame[0x3] =
183 (non_uniform_picture_scaling & 0x3) |
184 ((quantization & 0x3) << 2) |
185 ((ex_colorimetry & 0x7) << 4) |
186 ((ITC & 0x1) << 7);
187 frame[0x4] = (video_format_identification & 0x7F);
188 frame[0x5] = (pixel_repetition & 0xF);
189 frame[0x6] = (top_bar & 0xFF);
190 frame[0x7] = (top_bar >> 8);
191 frame[0x8] = (bottom_bar & 0xFF);
192 frame[0x9] = (bottom_bar >> 8);
193 frame[0xA] = (left_bar & 0xFF);
194 frame[0xB] = (left_bar >> 8);
195 frame[0xC] = (right_bar & 0xFF);
196 frame[0xD] = (right_bar >> 8);
198 r600_hdmi_infoframe_checksum(0x82, 0x02, 0x0D, frame);
200 WREG32(offset+R600_HDMI_VIDEOINFOFRAME_0,
201 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
202 WREG32(offset+R600_HDMI_VIDEOINFOFRAME_1,
203 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
204 WREG32(offset+R600_HDMI_VIDEOINFOFRAME_2,
205 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
206 WREG32(offset+R600_HDMI_VIDEOINFOFRAME_3,
207 frame[0xC] | (frame[0xD] << 8));
211 * build a Audio Info Frame
213 static void r600_hdmi_audioinfoframe(
214 struct drm_encoder *encoder,
215 uint8_t channel_count,
216 uint8_t coding_type,
217 uint8_t sample_size,
218 uint8_t sample_frequency,
219 uint8_t format,
220 uint8_t channel_allocation,
221 uint8_t level_shift,
222 int downmix_inhibit
225 struct drm_device *dev = encoder->dev;
226 struct radeon_device *rdev = dev->dev_private;
227 uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
229 uint8_t frame[11];
231 frame[0x0] = 0;
232 frame[0x1] = (channel_count & 0x7) | ((coding_type & 0xF) << 4);
233 frame[0x2] = (sample_size & 0x3) | ((sample_frequency & 0x7) << 2);
234 frame[0x3] = format;
235 frame[0x4] = channel_allocation;
236 frame[0x5] = ((level_shift & 0xF) << 3) | ((downmix_inhibit & 0x1) << 7);
237 frame[0x6] = 0;
238 frame[0x7] = 0;
239 frame[0x8] = 0;
240 frame[0x9] = 0;
241 frame[0xA] = 0;
243 r600_hdmi_infoframe_checksum(0x84, 0x01, 0x0A, frame);
245 WREG32(offset+R600_HDMI_AUDIOINFOFRAME_0,
246 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
247 WREG32(offset+R600_HDMI_AUDIOINFOFRAME_1,
248 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24));
252 * test if audio buffer is filled enough to start playing
254 static int r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder)
256 struct drm_device *dev = encoder->dev;
257 struct radeon_device *rdev = dev->dev_private;
258 uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
260 return (RREG32(offset+R600_HDMI_STATUS) & 0x10) != 0;
264 * have buffer status changed since last call?
266 int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder)
268 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
269 int status, result;
271 if (!radeon_encoder->hdmi_offset)
272 return 0;
274 status = r600_hdmi_is_audio_buffer_filled(encoder);
275 result = radeon_encoder->hdmi_buffer_status != status;
276 radeon_encoder->hdmi_buffer_status = status;
278 return result;
282 * write the audio workaround status to the hardware
284 void r600_hdmi_audio_workaround(struct drm_encoder *encoder)
286 struct drm_device *dev = encoder->dev;
287 struct radeon_device *rdev = dev->dev_private;
288 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
289 uint32_t offset = radeon_encoder->hdmi_offset;
291 if (!offset)
292 return;
294 if (!radeon_encoder->hdmi_audio_workaround ||
295 r600_hdmi_is_audio_buffer_filled(encoder)) {
297 /* disable audio workaround */
298 WREG32_P(offset+R600_HDMI_CNTL, 0x00000001, ~0x00001001);
300 } else {
301 /* enable audio workaround */
302 WREG32_P(offset+R600_HDMI_CNTL, 0x00001001, ~0x00001001);
308 * update the info frames with the data from the current display mode
310 void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
312 struct drm_device *dev = encoder->dev;
313 struct radeon_device *rdev = dev->dev_private;
314 uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
316 if (ASIC_IS_DCE4(rdev))
317 return;
319 if (!offset)
320 return;
322 r600_audio_set_clock(encoder, mode->clock);
324 WREG32(offset+R600_HDMI_UNKNOWN_0, 0x1000);
325 WREG32(offset+R600_HDMI_UNKNOWN_1, 0x0);
326 WREG32(offset+R600_HDMI_UNKNOWN_2, 0x1000);
328 r600_hdmi_update_ACR(encoder, mode->clock);
330 WREG32(offset+R600_HDMI_VIDEOCNTL, 0x13);
332 WREG32(offset+R600_HDMI_VERSION, 0x202);
334 r600_hdmi_videoinfoframe(encoder, RGB, 0, 0, 0, 0,
335 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
337 /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
338 WREG32(offset+R600_HDMI_AUDIO_DEBUG_0, 0x00FFFFFF);
339 WREG32(offset+R600_HDMI_AUDIO_DEBUG_1, 0x007FFFFF);
340 WREG32(offset+R600_HDMI_AUDIO_DEBUG_2, 0x00000001);
341 WREG32(offset+R600_HDMI_AUDIO_DEBUG_3, 0x00000001);
343 r600_hdmi_audio_workaround(encoder);
345 /* audio packets per line, does anyone know how to calc this ? */
346 WREG32_P(offset+R600_HDMI_CNTL, 0x00040000, ~0x001F0000);
350 * update settings with current parameters from audio engine
352 void r600_hdmi_update_audio_settings(struct drm_encoder *encoder)
354 struct drm_device *dev = encoder->dev;
355 struct radeon_device *rdev = dev->dev_private;
356 uint32_t offset = to_radeon_encoder(encoder)->hdmi_offset;
358 int channels = r600_audio_channels(rdev);
359 int rate = r600_audio_rate(rdev);
360 int bps = r600_audio_bits_per_sample(rdev);
361 uint8_t status_bits = r600_audio_status_bits(rdev);
362 uint8_t category_code = r600_audio_category_code(rdev);
364 uint32_t iec;
366 if (!offset)
367 return;
369 DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n",
370 r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped",
371 channels, rate, bps);
372 DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n",
373 (int)status_bits, (int)category_code);
375 iec = 0;
376 if (status_bits & AUDIO_STATUS_PROFESSIONAL)
377 iec |= 1 << 0;
378 if (status_bits & AUDIO_STATUS_NONAUDIO)
379 iec |= 1 << 1;
380 if (status_bits & AUDIO_STATUS_COPYRIGHT)
381 iec |= 1 << 2;
382 if (status_bits & AUDIO_STATUS_EMPHASIS)
383 iec |= 1 << 3;
385 iec |= category_code << 8;
387 switch (rate) {
388 case 32000: iec |= 0x3 << 24; break;
389 case 44100: iec |= 0x0 << 24; break;
390 case 88200: iec |= 0x8 << 24; break;
391 case 176400: iec |= 0xc << 24; break;
392 case 48000: iec |= 0x2 << 24; break;
393 case 96000: iec |= 0xa << 24; break;
394 case 192000: iec |= 0xe << 24; break;
397 WREG32(offset+R600_HDMI_IEC60958_1, iec);
399 iec = 0;
400 switch (bps) {
401 case 16: iec |= 0x2; break;
402 case 20: iec |= 0x3; break;
403 case 24: iec |= 0xb; break;
405 if (status_bits & AUDIO_STATUS_V)
406 iec |= 0x5 << 16;
408 WREG32_P(offset+R600_HDMI_IEC60958_2, iec, ~0x5000f);
410 /* 0x021 or 0x031 sets the audio frame length */
411 WREG32(offset+R600_HDMI_AUDIOCNTL, 0x31);
412 r600_hdmi_audioinfoframe(encoder, channels-1, 0, 0, 0, 0, 0, 0, 0);
414 r600_hdmi_audio_workaround(encoder);
417 static int r600_hdmi_find_free_block(struct drm_device *dev)
419 struct radeon_device *rdev = dev->dev_private;
420 struct drm_encoder *encoder;
421 struct radeon_encoder *radeon_encoder;
422 bool free_blocks[3] = { true, true, true };
424 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
425 radeon_encoder = to_radeon_encoder(encoder);
426 switch (radeon_encoder->hdmi_offset) {
427 case R600_HDMI_BLOCK1:
428 free_blocks[0] = false;
429 break;
430 case R600_HDMI_BLOCK2:
431 free_blocks[1] = false;
432 break;
433 case R600_HDMI_BLOCK3:
434 free_blocks[2] = false;
435 break;
439 if (rdev->family == CHIP_RS600 || rdev->family == CHIP_RS690 ||
440 rdev->family == CHIP_RS740) {
441 return free_blocks[0] ? R600_HDMI_BLOCK1 : 0;
442 } else if (rdev->family >= CHIP_R600) {
443 if (free_blocks[0])
444 return R600_HDMI_BLOCK1;
445 else if (free_blocks[1])
446 return R600_HDMI_BLOCK2;
448 return 0;
451 static void r600_hdmi_assign_block(struct drm_encoder *encoder)
453 struct drm_device *dev = encoder->dev;
454 struct radeon_device *rdev = dev->dev_private;
455 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
456 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
458 if (!dig) {
459 dev_err(rdev->dev, "Enabling HDMI on non-dig encoder\n");
460 return;
463 if (ASIC_IS_DCE4(rdev)) {
464 /* TODO */
465 } else if (ASIC_IS_DCE3(rdev)) {
466 radeon_encoder->hdmi_offset = dig->dig_encoder ?
467 R600_HDMI_BLOCK3 : R600_HDMI_BLOCK1;
468 if (ASIC_IS_DCE32(rdev))
469 radeon_encoder->hdmi_config_offset = dig->dig_encoder ?
470 R600_HDMI_CONFIG2 : R600_HDMI_CONFIG1;
471 } else if (rdev->family >= CHIP_R600 || rdev->family == CHIP_RS600 ||
472 rdev->family == CHIP_RS690 || rdev->family == CHIP_RS740) {
473 radeon_encoder->hdmi_offset = r600_hdmi_find_free_block(dev);
478 * enable the HDMI engine
480 void r600_hdmi_enable(struct drm_encoder *encoder)
482 struct drm_device *dev = encoder->dev;
483 struct radeon_device *rdev = dev->dev_private;
484 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
485 uint32_t offset;
487 if (ASIC_IS_DCE4(rdev))
488 return;
490 if (!radeon_encoder->hdmi_offset) {
491 r600_hdmi_assign_block(encoder);
492 if (!radeon_encoder->hdmi_offset) {
493 dev_warn(rdev->dev, "Could not find HDMI block for "
494 "0x%x encoder\n", radeon_encoder->encoder_id);
495 return;
499 offset = radeon_encoder->hdmi_offset;
500 if (ASIC_IS_DCE32(rdev) && !ASIC_IS_DCE4(rdev)) {
501 WREG32_P(radeon_encoder->hdmi_config_offset + 0x4, 0x1, ~0x1);
502 } else if (rdev->family >= CHIP_R600 && !ASIC_IS_DCE3(rdev)) {
503 switch (radeon_encoder->encoder_id) {
504 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
505 WREG32_P(AVIVO_TMDSA_CNTL, 0x4, ~0x4);
506 WREG32(offset + R600_HDMI_ENABLE, 0x101);
507 break;
508 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
509 WREG32_P(AVIVO_LVTMA_CNTL, 0x4, ~0x4);
510 WREG32(offset + R600_HDMI_ENABLE, 0x105);
511 break;
512 default:
513 dev_err(rdev->dev, "Unknown HDMI output type\n");
514 break;
518 if (rdev->irq.installed
519 && rdev->family != CHIP_RS600
520 && rdev->family != CHIP_RS690
521 && rdev->family != CHIP_RS740) {
523 /* if irq is available use it */
524 rdev->irq.hdmi[offset == R600_HDMI_BLOCK1 ? 0 : 1] = true;
525 radeon_irq_set(rdev);
527 r600_audio_disable_polling(encoder);
528 } else {
529 /* if not fallback to polling */
530 r600_audio_enable_polling(encoder);
533 DRM_DEBUG("Enabling HDMI interface @ 0x%04X for encoder 0x%x\n",
534 radeon_encoder->hdmi_offset, radeon_encoder->encoder_id);
538 * disable the HDMI engine
540 void r600_hdmi_disable(struct drm_encoder *encoder)
542 struct drm_device *dev = encoder->dev;
543 struct radeon_device *rdev = dev->dev_private;
544 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
545 uint32_t offset;
547 if (ASIC_IS_DCE4(rdev))
548 return;
550 offset = radeon_encoder->hdmi_offset;
551 if (!offset) {
552 dev_err(rdev->dev, "Disabling not enabled HDMI\n");
553 return;
556 DRM_DEBUG("Disabling HDMI interface @ 0x%04X for encoder 0x%x\n",
557 offset, radeon_encoder->encoder_id);
559 /* disable irq */
560 rdev->irq.hdmi[offset == R600_HDMI_BLOCK1 ? 0 : 1] = false;
561 radeon_irq_set(rdev);
563 /* disable polling */
564 r600_audio_disable_polling(encoder);
566 if (ASIC_IS_DCE32(rdev) && !ASIC_IS_DCE4(rdev)) {
567 WREG32_P(radeon_encoder->hdmi_config_offset + 0x4, 0, ~0x1);
568 } else if (rdev->family >= CHIP_R600 && !ASIC_IS_DCE3(rdev)) {
569 switch (radeon_encoder->encoder_id) {
570 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
571 WREG32_P(AVIVO_TMDSA_CNTL, 0, ~0x4);
572 WREG32(offset + R600_HDMI_ENABLE, 0);
573 break;
574 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
575 WREG32_P(AVIVO_LVTMA_CNTL, 0, ~0x4);
576 WREG32(offset + R600_HDMI_ENABLE, 0);
577 break;
578 default:
579 dev_err(rdev->dev, "Unknown HDMI output type\n");
580 break;
584 radeon_encoder->hdmi_offset = 0;
585 radeon_encoder->hdmi_config_offset = 0;