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 <linux/hdmi.h>
28 #include <uapi_drm/radeon_drm.h>
30 #include "radeon_asic.h"
37 enum r600_hdmi_color_format {
44 * IEC60958 status bits
46 enum r600_hdmi_iec_status_bits {
47 AUDIO_STATUS_DIG_ENABLE = 0x01,
48 AUDIO_STATUS_V = 0x02,
49 AUDIO_STATUS_VCFG = 0x04,
50 AUDIO_STATUS_EMPHASIS = 0x08,
51 AUDIO_STATUS_COPYRIGHT = 0x10,
52 AUDIO_STATUS_NONAUDIO = 0x20,
53 AUDIO_STATUS_PROFESSIONAL = 0x40,
54 AUDIO_STATUS_LEVEL = 0x80
57 static const struct radeon_hdmi_acr r600_hdmi_predefined_acr[] = {
58 /* 32kHz 44.1kHz 48kHz */
59 /* Clock N CTS N CTS N CTS */
60 { 25174, 4576, 28125, 7007, 31250, 6864, 28125 }, /* 25,20/1.001 MHz */
61 { 25200, 4096, 25200, 6272, 28000, 6144, 25200 }, /* 25.20 MHz */
62 { 27000, 4096, 27000, 6272, 30000, 6144, 27000 }, /* 27.00 MHz */
63 { 27027, 4096, 27027, 6272, 30030, 6144, 27027 }, /* 27.00*1.001 MHz */
64 { 54000, 4096, 54000, 6272, 60000, 6144, 54000 }, /* 54.00 MHz */
65 { 54054, 4096, 54054, 6272, 60060, 6144, 54054 }, /* 54.00*1.001 MHz */
66 { 74175, 11648, 210937, 17836, 234375, 11648, 140625 }, /* 74.25/1.001 MHz */
67 { 74250, 4096, 74250, 6272, 82500, 6144, 74250 }, /* 74.25 MHz */
68 { 148351, 11648, 421875, 8918, 234375, 5824, 140625 }, /* 148.50/1.001 MHz */
69 { 148500, 4096, 148500, 6272, 165000, 6144, 148500 }, /* 148.50 MHz */
70 { 0, 4096, 0, 6272, 0, 6144, 0 } /* Other */
74 * calculate CTS value if it's not found in the table
76 static void r600_hdmi_calc_cts(uint32_t clock, int *CTS, int N, int freq)
79 *CTS = clock * N / (128 * freq) * 1000;
80 DRM_DEBUG("Using ACR timing N=%d CTS=%d for frequency %d\n",
84 struct radeon_hdmi_acr r600_hdmi_acr(uint32_t clock)
86 struct radeon_hdmi_acr res;
89 for (i = 0; r600_hdmi_predefined_acr[i].clock != clock &&
90 r600_hdmi_predefined_acr[i].clock != 0; i++)
92 res = r600_hdmi_predefined_acr[i];
94 /* In case some CTS are missing */
95 r600_hdmi_calc_cts(clock, &res.cts_32khz, res.n_32khz, 32000);
96 r600_hdmi_calc_cts(clock, &res.cts_44_1khz, res.n_44_1khz, 44100);
97 r600_hdmi_calc_cts(clock, &res.cts_48khz, res.n_48khz, 48000);
103 * update the N and CTS parameters for a given pixel clock rate
105 static void r600_hdmi_update_ACR(struct drm_encoder *encoder, uint32_t clock)
107 struct drm_device *dev = encoder->dev;
108 struct radeon_device *rdev = dev->dev_private;
109 struct radeon_hdmi_acr acr = r600_hdmi_acr(clock);
110 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
111 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
112 uint32_t offset = dig->afmt->offset;
114 WREG32(HDMI0_ACR_32_0 + offset, HDMI0_ACR_CTS_32(acr.cts_32khz));
115 WREG32(HDMI0_ACR_32_1 + offset, acr.n_32khz);
117 WREG32(HDMI0_ACR_44_0 + offset, HDMI0_ACR_CTS_44(acr.cts_44_1khz));
118 WREG32(HDMI0_ACR_44_1 + offset, acr.n_44_1khz);
120 WREG32(HDMI0_ACR_48_0 + offset, HDMI0_ACR_CTS_48(acr.cts_48khz));
121 WREG32(HDMI0_ACR_48_1 + offset, acr.n_48khz);
125 * build a HDMI Video Info Frame
127 static void r600_hdmi_update_avi_infoframe(struct drm_encoder *encoder,
128 void *buffer, size_t size)
130 struct drm_device *dev = encoder->dev;
131 struct radeon_device *rdev = dev->dev_private;
132 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
133 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
134 uint32_t offset = dig->afmt->offset;
135 uint8_t *frame = (uint8_t*)buffer + 3;
137 uint8_t *header = buffer;
139 WREG32(HDMI0_AVI_INFO0 + offset,
140 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
141 WREG32(HDMI0_AVI_INFO1 + offset,
142 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x7] << 24));
143 WREG32(HDMI0_AVI_INFO2 + offset,
144 frame[0x8] | (frame[0x9] << 8) | (frame[0xA] << 16) | (frame[0xB] << 24));
145 WREG32(HDMI0_AVI_INFO3 + offset,
146 frame[0xC] | (frame[0xD] << 8) | (header[1] << 24));
150 * build a Audio Info Frame
152 static void r600_hdmi_update_audio_infoframe(struct drm_encoder *encoder,
153 const void *buffer, size_t size)
155 struct drm_device *dev = encoder->dev;
156 struct radeon_device *rdev = dev->dev_private;
157 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
158 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
159 uint32_t offset = dig->afmt->offset;
160 const u8 *frame = (const u8*)buffer + 3;
162 WREG32(HDMI0_AUDIO_INFO0 + offset,
163 frame[0x0] | (frame[0x1] << 8) | (frame[0x2] << 16) | (frame[0x3] << 24));
164 WREG32(HDMI0_AUDIO_INFO1 + offset,
165 frame[0x4] | (frame[0x5] << 8) | (frame[0x6] << 16) | (frame[0x8] << 24));
169 * test if audio buffer is filled enough to start playing
171 static bool r600_hdmi_is_audio_buffer_filled(struct drm_encoder *encoder)
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;
179 return (RREG32(HDMI0_STATUS + offset) & 0x10) != 0;
183 * have buffer status changed since last call?
185 int r600_hdmi_buffer_status_changed(struct drm_encoder *encoder)
187 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
188 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
191 if (!dig->afmt || !dig->afmt->enabled)
194 status = r600_hdmi_is_audio_buffer_filled(encoder);
195 result = dig->afmt->last_buffer_filled_status != status;
196 dig->afmt->last_buffer_filled_status = status;
202 * write the audio workaround status to the hardware
204 static void r600_hdmi_audio_workaround(struct drm_encoder *encoder)
206 struct drm_device *dev = encoder->dev;
207 struct radeon_device *rdev = dev->dev_private;
208 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
209 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
210 uint32_t offset = dig->afmt->offset;
211 bool hdmi_audio_workaround = false; /* FIXME */
214 if (!hdmi_audio_workaround ||
215 r600_hdmi_is_audio_buffer_filled(encoder))
216 value = 0; /* disable workaround */
218 value = HDMI0_AUDIO_TEST_EN; /* enable workaround */
219 WREG32_P(HDMI0_AUDIO_PACKET_CONTROL + offset,
220 value, ~HDMI0_AUDIO_TEST_EN);
223 void r600_audio_set_dto(struct drm_encoder *encoder, u32 clock)
225 struct drm_device *dev = encoder->dev;
226 struct radeon_device *rdev = dev->dev_private;
227 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
228 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
229 u32 base_rate = 24000;
230 u32 max_ratio = clock / base_rate;
232 u32 dto_modulo = clock;
236 if (!dig || !dig->afmt)
239 if (max_ratio >= 8) {
240 dto_phase = 192 * 1000;
242 } else if (max_ratio >= 4) {
243 dto_phase = 96 * 1000;
245 } else if (max_ratio >= 2) {
246 dto_phase = 48 * 1000;
249 dto_phase = 24 * 1000;
253 /* there are two DTOs selected by DCCG_AUDIO_DTO_SELECT.
254 * doesn't matter which one you use. Just use the first one.
256 /* XXX two dtos; generally use dto0 for hdmi */
257 /* Express [24MHz / target pixel clock] as an exact rational
258 * number (coefficient of two integer numbers. DCCG_AUDIO_DTOx_PHASE
259 * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
261 if (ASIC_IS_DCE3(rdev)) {
262 /* according to the reg specs, this should DCE3.2 only, but in
263 * practice it seems to cover DCE3.0 as well.
265 if (dig->dig_encoder == 0) {
266 dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
267 dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
268 WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl);
269 WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
270 WREG32(DCCG_AUDIO_DTO0_MODULE, dto_modulo);
271 WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */
273 dto_cntl = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
274 dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
275 WREG32(DCCG_AUDIO_DTO1_CNTL, dto_cntl);
276 WREG32(DCCG_AUDIO_DTO1_PHASE, dto_phase);
277 WREG32(DCCG_AUDIO_DTO1_MODULE, dto_modulo);
278 WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
281 /* according to the reg specs, this should be DCE2.0 and DCE3.0 */
282 WREG32(AUDIO_DTO, AUDIO_DTO_PHASE(base_rate / 10) |
283 AUDIO_DTO_MODULE(clock / 10));
288 * update the info frames with the data from the current display mode
290 void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
292 struct drm_device *dev = encoder->dev;
293 struct radeon_device *rdev = dev->dev_private;
294 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
295 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
296 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
297 struct hdmi_avi_infoframe frame;
301 if (!dig || !dig->afmt)
304 /* Silent, r600_hdmi_enable will raise WARN for us */
305 if (!dig->afmt->enabled)
307 offset = dig->afmt->offset;
309 r600_audio_set_dto(encoder, mode->clock);
311 WREG32(HDMI0_VBI_PACKET_CONTROL + offset,
312 HDMI0_NULL_SEND); /* send null packets when required */
314 WREG32(HDMI0_AUDIO_CRC_CONTROL + offset, 0x1000);
316 if (ASIC_IS_DCE32(rdev)) {
317 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,
318 HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */
319 HDMI0_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
320 WREG32(AFMT_AUDIO_PACKET_CONTROL + offset,
321 AFMT_AUDIO_SAMPLE_SEND | /* send audio packets */
322 AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
324 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,
325 HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */
326 HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */
327 HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */
328 HDMI0_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
331 WREG32(HDMI0_ACR_PACKET_CONTROL + offset,
332 HDMI0_ACR_AUTO_SEND | /* allow hw to sent ACR packets when required */
333 HDMI0_ACR_SOURCE); /* select SW CTS value */
335 WREG32(HDMI0_VBI_PACKET_CONTROL + offset,
336 HDMI0_NULL_SEND | /* send null packets when required */
337 HDMI0_GC_SEND | /* send general control packets */
338 HDMI0_GC_CONT); /* send general control packets every frame */
340 /* TODO: HDMI0_AUDIO_INFO_UPDATE */
341 WREG32(HDMI0_INFOFRAME_CONTROL0 + offset,
342 HDMI0_AVI_INFO_SEND | /* enable AVI info frames */
343 HDMI0_AVI_INFO_CONT | /* send AVI info frames every frame/field */
344 HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
345 HDMI0_AUDIO_INFO_CONT); /* send audio info frames every frame/field */
347 WREG32(HDMI0_INFOFRAME_CONTROL1 + offset,
348 HDMI0_AVI_INFO_LINE(2) | /* anything other than 0 */
349 HDMI0_AUDIO_INFO_LINE(2)); /* anything other than 0 */
351 WREG32(HDMI0_GC + offset, 0); /* unset HDMI0_GC_AVMUTE */
353 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
355 DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
359 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
361 DRM_ERROR("failed to pack AVI infoframe: %zd\n", err);
365 r600_hdmi_update_avi_infoframe(encoder, buffer, sizeof(buffer));
366 r600_hdmi_update_ACR(encoder, mode->clock);
368 /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
369 WREG32(HDMI0_RAMP_CONTROL0 + offset, 0x00FFFFFF);
370 WREG32(HDMI0_RAMP_CONTROL1 + offset, 0x007FFFFF);
371 WREG32(HDMI0_RAMP_CONTROL2 + offset, 0x00000001);
372 WREG32(HDMI0_RAMP_CONTROL3 + offset, 0x00000001);
374 r600_hdmi_audio_workaround(encoder);
378 * update settings with current parameters from audio engine
380 void r600_hdmi_update_audio_settings(struct drm_encoder *encoder)
382 struct drm_device *dev = encoder->dev;
383 struct radeon_device *rdev = dev->dev_private;
384 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
385 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
386 struct r600_audio audio = r600_audio_status(rdev);
387 uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
388 struct hdmi_audio_infoframe frame;
393 if (!dig->afmt || !dig->afmt->enabled)
395 offset = dig->afmt->offset;
397 DRM_DEBUG("%s with %d channels, %d Hz sampling rate, %d bits per sample,\n",
398 r600_hdmi_is_audio_buffer_filled(encoder) ? "playing" : "stopped",
399 audio.channels, audio.rate, audio.bits_per_sample);
400 DRM_DEBUG("0x%02X IEC60958 status bits and 0x%02X category code\n",
401 (int)audio.status_bits, (int)audio.category_code);
404 if (audio.status_bits & AUDIO_STATUS_PROFESSIONAL)
406 if (audio.status_bits & AUDIO_STATUS_NONAUDIO)
408 if (audio.status_bits & AUDIO_STATUS_COPYRIGHT)
410 if (audio.status_bits & AUDIO_STATUS_EMPHASIS)
413 iec |= HDMI0_60958_CS_CATEGORY_CODE(audio.category_code);
415 switch (audio.rate) {
417 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x3);
420 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x0);
423 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x2);
426 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0x8);
429 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xa);
432 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xc);
435 iec |= HDMI0_60958_CS_SAMPLING_FREQUENCY(0xe);
439 WREG32(HDMI0_60958_0 + offset, iec);
442 switch (audio.bits_per_sample) {
444 iec |= HDMI0_60958_CS_WORD_LENGTH(0x2);
447 iec |= HDMI0_60958_CS_WORD_LENGTH(0x3);
450 iec |= HDMI0_60958_CS_WORD_LENGTH(0xb);
453 if (audio.status_bits & AUDIO_STATUS_V)
455 WREG32_P(HDMI0_60958_1 + offset, iec, ~0x5000f);
457 err = hdmi_audio_infoframe_init(&frame);
459 DRM_ERROR("failed to setup audio infoframe\n");
463 frame.channels = audio.channels;
465 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
467 DRM_ERROR("failed to pack audio infoframe\n");
471 r600_hdmi_update_audio_infoframe(encoder, buffer, sizeof(buffer));
472 r600_hdmi_audio_workaround(encoder);
476 * enable the HDMI engine
478 void r600_hdmi_enable(struct drm_encoder *encoder, bool enable)
480 struct drm_device *dev = encoder->dev;
481 struct radeon_device *rdev = dev->dev_private;
482 struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
483 struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
484 u32 hdmi = HDMI0_ERROR_ACK;
486 if (!dig || !dig->afmt)
489 /* Silent, r600_hdmi_enable will raise WARN for us */
490 if (enable && dig->afmt->enabled)
492 if (!enable && !dig->afmt->enabled)
495 /* Older chipsets require setting HDMI and routing manually */
496 if (!ASIC_IS_DCE3(rdev)) {
498 hdmi |= HDMI0_ENABLE;
499 switch (radeon_encoder->encoder_id) {
500 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_TMDS1:
502 WREG32_OR(AVIVO_TMDSA_CNTL, AVIVO_TMDSA_CNTL_HDMI_EN);
503 hdmi |= HDMI0_STREAM(HDMI0_STREAM_TMDSA);
505 WREG32_AND(AVIVO_TMDSA_CNTL, ~AVIVO_TMDSA_CNTL_HDMI_EN);
508 case ENCODER_OBJECT_ID_INTERNAL_LVTM1:
510 WREG32_OR(AVIVO_LVTMA_CNTL, AVIVO_LVTMA_CNTL_HDMI_EN);
511 hdmi |= HDMI0_STREAM(HDMI0_STREAM_LVTMA);
513 WREG32_AND(AVIVO_LVTMA_CNTL, ~AVIVO_LVTMA_CNTL_HDMI_EN);
516 case ENCODER_OBJECT_ID_INTERNAL_DDI:
518 WREG32_OR(DDIA_CNTL, DDIA_HDMI_EN);
519 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DDIA);
521 WREG32_AND(DDIA_CNTL, ~DDIA_HDMI_EN);
524 case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_DVO1:
526 hdmi |= HDMI0_STREAM(HDMI0_STREAM_DVOA);
529 dev_err(rdev->dev, "Invalid encoder for HDMI: 0x%X\n",
530 radeon_encoder->encoder_id);
533 WREG32(HDMI0_CONTROL + dig->afmt->offset, hdmi);
536 if (rdev->irq.installed) {
537 /* if irq is available use it */
538 /* XXX: shouldn't need this on any asics. Double check DCE2/3 */
540 radeon_irq_kms_enable_afmt(rdev, dig->afmt->id);
542 radeon_irq_kms_disable_afmt(rdev, dig->afmt->id);
545 dig->afmt->enabled = enable;
547 DRM_DEBUG("%sabling HDMI interface @ 0x%04X for encoder 0x%x\n",
548 enable ? "En" : "Dis", dig->afmt->offset, radeon_encoder->encoder_id);