drivers/gpu/drm/radeon/dce3_1_afmt.c

   1 /*
   2  * Copyright 2013 Advanced Micro Devices, Inc.
   3  * Copyright 2014 Rafał Miłecki
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  19  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  21  * OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23 #include <linux/hdmi.h>
  24 #include <drm/drmP.h>
  25 #include "radeon.h"
  26 #include "radeon_asic.h"
  27 #include "radeon_audio.h"
  28 #include "r600d.h"
  29
  30 void dce3_2_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
  31         u8 *sadb, int sad_count)
  32 {
  33         struct radeon_device *rdev = encoder->dev->dev_private;
  34         u32 tmp;
  35
  36         /* program the speaker allocation */
  37         tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
  38         tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
  39         /* set HDMI mode */
  40         tmp |= HDMI_CONNECTION;
  41         if (sad_count)
  42                 tmp |= SPEAKER_ALLOCATION(sadb[0]);
  43         else
  44                 tmp |= SPEAKER_ALLOCATION(5); /* stereo */
  45         WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
  46 }
  47
  48 void dce3_2_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
  49         u8 *sadb, int sad_count)
  50 {
  51         struct radeon_device *rdev = encoder->dev->dev_private;
  52         u32 tmp;
  53
  54         /* program the speaker allocation */
  55         tmp = RREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER);
  56         tmp &= ~(HDMI_CONNECTION | SPEAKER_ALLOCATION_MASK);
  57         /* set DP mode */
  58         tmp |= DP_CONNECTION;
  59         if (sad_count)
  60                 tmp |= SPEAKER_ALLOCATION(sadb[0]);
  61         else
  62                 tmp |= SPEAKER_ALLOCATION(5); /* stereo */
  63         WREG32_ENDPOINT(0, AZ_F0_CODEC_PIN0_CONTROL_CHANNEL_SPEAKER, tmp);
  64 }
  65
  66 void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder,
  67         struct cea_sad *sads, int sad_count)
  68 {
  69         int i;
  70         struct radeon_device *rdev = encoder->dev->dev_private;
  71         static const u16 eld_reg_to_type[][2] = {
  72                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
  73                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
  74                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
  75                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
  76                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
  77                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
  78                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
  79                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
  80                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
  81                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
  82                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
  83                 { AZ_F0_CODEC_PIN0_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
  84         };
  85
  86         for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
  87                 u32 value = 0;
  88                 u8 stereo_freqs = 0;
  89                 int max_channels = -1;
  90                 int j;
  91
  92                 for (j = 0; j < sad_count; j++) {
  93                         struct cea_sad *sad = &sads[j];
  94
  95                         if (sad->format == eld_reg_to_type[i][1]) {
  96                                 if (sad->channels > max_channels) {
  97                                         value = MAX_CHANNELS(sad->channels) |
  98                                                 DESCRIPTOR_BYTE_2(sad->byte2) |
  99                                                 SUPPORTED_FREQUENCIES(sad->freq);
 100                                         max_channels = sad->channels;
 101                                 }
 102
 103                                 if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
 104                                         stereo_freqs |= sad->freq;
 105                                 else
 106                                         break;
 107                         }
 108                 }
 109
 110                 value |= SUPPORTED_FREQUENCIES_STEREO(stereo_freqs);
 111
 112                 WREG32_ENDPOINT(0, eld_reg_to_type[i][0], value);
 113         }
 114 }
 115
 116 void dce3_2_audio_set_dto(struct radeon_device *rdev,
 117         struct radeon_crtc *crtc, unsigned int clock)
 118 {
 119         struct radeon_encoder *radeon_encoder;
 120         struct radeon_encoder_atom_dig *dig;
 121         unsigned int max_ratio = clock / 24000;
 122         u32 dto_phase;
 123         u32 wallclock_ratio;
 124         u32 dto_cntl;
 125
 126         if (!crtc)
 127                 return;
 128
 129         radeon_encoder = to_radeon_encoder(crtc->encoder);
 130         dig = radeon_encoder->enc_priv;
 131
 132         if (!dig)
 133                 return;
 134
 135         if (max_ratio >= 8) {
 136                 dto_phase = 192 * 1000;
 137                 wallclock_ratio = 3;
 138         } else if (max_ratio >= 4) {
 139                 dto_phase = 96 * 1000;
 140                 wallclock_ratio = 2;
 141         } else if (max_ratio >= 2) {
 142                 dto_phase = 48 * 1000;
 143                 wallclock_ratio = 1;
 144         } else {
 145                 dto_phase = 24 * 1000;
 146                 wallclock_ratio = 0;
 147         }
 148
 149         /* Express [24MHz / target pixel clock] as an exact rational
 150          * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
 151          * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
 152          */
 153         if (dig->dig_encoder == 0) {
 154                 dto_cntl = RREG32(DCCG_AUDIO_DTO0_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 155                 dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
 156                 WREG32(DCCG_AUDIO_DTO0_CNTL, dto_cntl);
 157                 WREG32(DCCG_AUDIO_DTO0_PHASE, dto_phase);
 158                 WREG32(DCCG_AUDIO_DTO0_MODULE, clock);
 159                 WREG32(DCCG_AUDIO_DTO_SELECT, 0); /* select DTO0 */
 160         } else {
 161                 dto_cntl = RREG32(DCCG_AUDIO_DTO1_CNTL) & ~DCCG_AUDIO_DTO_WALLCLOCK_RATIO_MASK;
 162                 dto_cntl |= DCCG_AUDIO_DTO_WALLCLOCK_RATIO(wallclock_ratio);
 163                 WREG32(DCCG_AUDIO_DTO1_CNTL, dto_cntl);
 164                 WREG32(DCCG_AUDIO_DTO1_PHASE, dto_phase);
 165                 WREG32(DCCG_AUDIO_DTO1_MODULE, clock);
 166                 WREG32(DCCG_AUDIO_DTO_SELECT, 1); /* select DTO1 */
 167         }
 168 }
 169
 170 /*
 171  * update the info frames with the data from the current display mode
 172  */
 173 void dce3_1_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mode)
 174 {
 175         struct drm_device *dev = encoder->dev;
 176         struct radeon_device *rdev = dev->dev_private;
 177         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 178         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 179         u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
 180         struct hdmi_avi_infoframe frame;
 181         uint32_t offset;
 182         ssize_t err;
 183
 184         if (!dig || !dig->afmt)
 185                 return;
 186
 187         /* Silent, r600_hdmi_enable will raise WARN for us */
 188         if (!dig->afmt->enabled)
 189                 return;
 190         offset = dig->afmt->offset;
 191
 192         /* disable audio prior to setting up hw */
 193         dig->afmt->pin = radeon_audio_get_pin(encoder);
 194         radeon_audio_enable(rdev, dig->afmt->pin, 0);
 195
 196         radeon_audio_set_dto(encoder, mode->clock);
 197
 198         WREG32(HDMI0_VBI_PACKET_CONTROL + offset,
 199                HDMI0_NULL_SEND); /* send null packets when required */
 200
 201         WREG32(HDMI0_AUDIO_CRC_CONTROL + offset, 0x1000);
 202
 203         if (ASIC_IS_DCE32(rdev)) {
 204                 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,
 205                        HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */
 206                        HDMI0_AUDIO_PACKETS_PER_LINE(3)); /* should be suffient for all audio modes and small enough for all hblanks */
 207                 WREG32(AFMT_AUDIO_PACKET_CONTROL + offset,
 208                        AFMT_AUDIO_SAMPLE_SEND | /* send audio packets */
 209                        AFMT_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
 210         } else {
 211                 WREG32(HDMI0_AUDIO_PACKET_CONTROL + offset,
 212                        HDMI0_AUDIO_SAMPLE_SEND | /* send audio packets */
 213                        HDMI0_AUDIO_DELAY_EN(1) | /* default audio delay */
 214                        HDMI0_AUDIO_PACKETS_PER_LINE(3) | /* should be suffient for all audio modes and small enough for all hblanks */
 215                        HDMI0_60958_CS_UPDATE); /* allow 60958 channel status fields to be updated */
 216         }
 217
 218         if (ASIC_IS_DCE32(rdev)) {
 219                 radeon_audio_write_speaker_allocation(encoder);
 220                 radeon_audio_write_sad_regs(encoder);
 221         }
 222
 223         WREG32(HDMI0_ACR_PACKET_CONTROL + offset,
 224                HDMI0_ACR_SOURCE | /* select SW CTS value - XXX verify that hw CTS works on all families */
 225                HDMI0_ACR_AUTO_SEND); /* allow hw to sent ACR packets when required */
 226
 227         WREG32(HDMI0_VBI_PACKET_CONTROL + offset,
 228                HDMI0_NULL_SEND | /* send null packets when required */
 229                HDMI0_GC_SEND | /* send general control packets */
 230                HDMI0_GC_CONT); /* send general control packets every frame */
 231
 232         /* TODO: HDMI0_AUDIO_INFO_UPDATE */
 233         WREG32(HDMI0_INFOFRAME_CONTROL0 + offset,
 234                HDMI0_AVI_INFO_SEND | /* enable AVI info frames */
 235                HDMI0_AVI_INFO_CONT | /* send AVI info frames every frame/field */
 236                HDMI0_AUDIO_INFO_SEND | /* enable audio info frames (frames won't be set until audio is enabled) */
 237                HDMI0_AUDIO_INFO_CONT); /* send audio info frames every frame/field */
 238
 239         WREG32(HDMI0_INFOFRAME_CONTROL1 + offset,
 240                HDMI0_AVI_INFO_LINE(2) | /* anything other than 0 */
 241                HDMI0_AUDIO_INFO_LINE(2)); /* anything other than 0 */
 242
 243         WREG32(HDMI0_GC + offset, 0); /* unset HDMI0_GC_AVMUTE */
 244
 245         err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
 246         if (err < 0) {
 247                 DRM_ERROR("failed to setup AVI infoframe: %zd\n", err);
 248                 return;
 249         }
 250
 251         err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
 252         if (err < 0) {
 253                 DRM_ERROR("failed to pack AVI infoframe: %zd\n", err);
 254                 return;
 255         }
 256
 257         radeon_update_avi_infoframe(encoder, buffer, sizeof(buffer));
 258         r600_hdmi_update_ACR(encoder, mode->clock);
 259
 260         /* it's unknown what these bits do excatly, but it's indeed quite useful for debugging */
 261         WREG32(HDMI0_RAMP_CONTROL0 + offset, 0x00FFFFFF);
 262         WREG32(HDMI0_RAMP_CONTROL1 + offset, 0x007FFFFF);
 263         WREG32(HDMI0_RAMP_CONTROL2 + offset, 0x00000001);
 264         WREG32(HDMI0_RAMP_CONTROL3 + offset, 0x00000001);
 265
 266         r600_hdmi_audio_workaround(encoder);
 267
 268         /* enable audio after to setting up hw */
 269         radeon_audio_enable(rdev, dig->afmt->pin, 0xf);
 270 }