drivers/gpu/drm/radeon/dce6_afmt.c

   1 /*
   2  * Copyright 2013 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23 #include <linux/hdmi.h>
  24 #include <drm/drmP.h>
  25 #include "radeon.h"
  26 #include "sid.h"
  27
  28 static u32 dce6_endpoint_rreg(struct radeon_device *rdev,
  29                               u32 block_offset, u32 reg)
  30 {
  31         unsigned long flags;
  32         u32 r;
  33
  34         spin_lock_irqsave(&rdev->end_idx_lock, flags);
  35         WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
  36         r = RREG32(AZ_F0_CODEC_ENDPOINT_DATA + block_offset);
  37         spin_unlock_irqrestore(&rdev->end_idx_lock, flags);
  38
  39         return r;
  40 }
  41
  42 static void dce6_endpoint_wreg(struct radeon_device *rdev,
  43                                u32 block_offset, u32 reg, u32 v)
  44 {
  45         unsigned long flags;
  46
  47         spin_lock_irqsave(&rdev->end_idx_lock, flags);
  48         if (ASIC_IS_DCE8(rdev))
  49                 WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset, reg);
  50         else
  51                 WREG32(AZ_F0_CODEC_ENDPOINT_INDEX + block_offset,
  52                        AZ_ENDPOINT_REG_WRITE_EN | AZ_ENDPOINT_REG_INDEX(reg));
  53         WREG32(AZ_F0_CODEC_ENDPOINT_DATA + block_offset, v);
  54         spin_unlock_irqrestore(&rdev->end_idx_lock, flags);
  55 }
  56
  57 #define RREG32_ENDPOINT(block, reg) dce6_endpoint_rreg(rdev, (block), (reg))
  58 #define WREG32_ENDPOINT(block, reg, v) dce6_endpoint_wreg(rdev, (block), (reg), (v))
  59
  60
  61 static void dce6_afmt_get_connected_pins(struct radeon_device *rdev)
  62 {
  63         int i;
  64         u32 offset, tmp;
  65
  66         for (i = 0; i < rdev->audio.num_pins; i++) {
  67                 offset = rdev->audio.pin[i].offset;
  68                 tmp = RREG32_ENDPOINT(offset,
  69                                       AZ_F0_CODEC_PIN_CONTROL_RESPONSE_CONFIGURATION_DEFAULT);
  70                 if (((tmp & PORT_CONNECTIVITY_MASK) >> PORT_CONNECTIVITY_SHIFT) == 1)
  71                         rdev->audio.pin[i].connected = false;
  72                 else
  73                         rdev->audio.pin[i].connected = true;
  74         }
  75 }
  76
  77 struct r600_audio_pin *dce6_audio_get_pin(struct radeon_device *rdev)
  78 {
  79         int i;
  80
  81         dce6_afmt_get_connected_pins(rdev);
  82
  83         for (i = 0; i < rdev->audio.num_pins; i++) {
  84                 if (rdev->audio.pin[i].connected)
  85                         return &rdev->audio.pin[i];
  86         }
  87         DRM_ERROR("No connected audio pins found!\n");
  88         return NULL;
  89 }
  90
  91 void dce6_afmt_select_pin(struct drm_encoder *encoder)
  92 {
  93         struct radeon_device *rdev = encoder->dev->dev_private;
  94         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
  95         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
  96         u32 offset = dig->afmt->offset;
  97
  98         if (!dig->afmt->pin)
  99                 return;
 100
 101         WREG32(AFMT_AUDIO_SRC_CONTROL + offset,
 102                AFMT_AUDIO_SRC_SELECT(dig->afmt->pin->id));
 103 }
 104
 105 void dce6_afmt_write_speaker_allocation(struct drm_encoder *encoder)
 106 {
 107         struct radeon_device *rdev = encoder->dev->dev_private;
 108         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 109         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 110         struct drm_connector *connector;
 111         struct radeon_connector *radeon_connector = NULL;
 112         u32 offset, tmp;
 113         u8 *sadb;
 114         int sad_count;
 115
 116         if (!dig->afmt->pin)
 117                 return;
 118
 119         offset = dig->afmt->pin->offset;
 120
 121         list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
 122                 if (connector->encoder == encoder)
 123                         radeon_connector = to_radeon_connector(connector);
 124         }
 125
 126         if (!radeon_connector) {
 127                 DRM_ERROR("Couldn't find encoder's connector\n");
 128                 return;
 129         }
 130
 131         sad_count = drm_edid_to_speaker_allocation(radeon_connector->edid, &sadb);
 132         if (sad_count < 0) {
 133                 DRM_ERROR("Couldn't read Speaker Allocation Data Block: %d\n", sad_count);
 134                 return;
 135         }
 136
 137         /* program the speaker allocation */
 138         tmp = RREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER);
 139         tmp &= ~(DP_CONNECTION | SPEAKER_ALLOCATION_MASK);
 140         /* set HDMI mode */
 141         tmp |= HDMI_CONNECTION;
 142         if (sad_count)
 143                 tmp |= SPEAKER_ALLOCATION(sadb[0]);
 144         else
 145                 tmp |= SPEAKER_ALLOCATION(5); /* stereo */
 146         WREG32_ENDPOINT(offset, AZ_F0_CODEC_PIN_CONTROL_CHANNEL_SPEAKER, tmp);
 147
 148         kfree(sadb);
 149 }
 150
 151 void dce6_afmt_write_sad_regs(struct drm_encoder *encoder)
 152 {
 153         struct radeon_device *rdev = encoder->dev->dev_private;
 154         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 155         struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
 156         u32 offset;
 157         struct drm_connector *connector;
 158         struct radeon_connector *radeon_connector = NULL;
 159         struct cea_sad *sads;
 160         int i, sad_count;
 161
 162         static const u16 eld_reg_to_type[][2] = {
 163                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR0, HDMI_AUDIO_CODING_TYPE_PCM },
 164                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR1, HDMI_AUDIO_CODING_TYPE_AC3 },
 165                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR2, HDMI_AUDIO_CODING_TYPE_MPEG1 },
 166                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR3, HDMI_AUDIO_CODING_TYPE_MP3 },
 167                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR4, HDMI_AUDIO_CODING_TYPE_MPEG2 },
 168                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR5, HDMI_AUDIO_CODING_TYPE_AAC_LC },
 169                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR6, HDMI_AUDIO_CODING_TYPE_DTS },
 170                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR7, HDMI_AUDIO_CODING_TYPE_ATRAC },
 171                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR9, HDMI_AUDIO_CODING_TYPE_EAC3 },
 172                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR10, HDMI_AUDIO_CODING_TYPE_DTS_HD },
 173                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR11, HDMI_AUDIO_CODING_TYPE_MLP },
 174                 { AZ_F0_CODEC_PIN_CONTROL_AUDIO_DESCRIPTOR13, HDMI_AUDIO_CODING_TYPE_WMA_PRO },
 175         };
 176
 177         if (!dig->afmt->pin)
 178                 return;
 179
 180         offset = dig->afmt->pin->offset;
 181
 182         list_for_each_entry(connector, &encoder->dev->mode_config.connector_list, head) {
 183                 if (connector->encoder == encoder)
 184                         radeon_connector = to_radeon_connector(connector);
 185         }
 186
 187         if (!radeon_connector) {
 188                 DRM_ERROR("Couldn't find encoder's connector\n");
 189                 return;
 190         }
 191
 192         sad_count = drm_edid_to_sad(radeon_connector->edid, &sads);
 193         if (sad_count < 0) {
 194                 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
 195                 return;
 196         }
 197         BUG_ON(!sads);
 198
 199         for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
 200                 u32 value = 0;
 201                 int j;
 202
 203                 for (j = 0; j < sad_count; j++) {
 204                         struct cea_sad *sad = &sads[j];
 205
 206                         if (sad->format == eld_reg_to_type[i][1]) {
 207                                 value = MAX_CHANNELS(sad->channels) |
 208                                         DESCRIPTOR_BYTE_2(sad->byte2) |
 209                                         SUPPORTED_FREQUENCIES(sad->freq);
 210                                 if (sad->format == HDMI_AUDIO_CODING_TYPE_PCM)
 211                                         value |= SUPPORTED_FREQUENCIES_STEREO(sad->freq);
 212                                 break;
 213                         }
 214                 }
 215                 WREG32_ENDPOINT(offset, eld_reg_to_type[i][0], value);
 216         }
 217
 218         kfree(sads);
 219 }
 220
 221 static int dce6_audio_chipset_supported(struct radeon_device *rdev)
 222 {
 223         return !ASIC_IS_NODCE(rdev);
 224 }
 225
 226 static void dce6_audio_enable(struct radeon_device *rdev,
 227                               struct r600_audio_pin *pin,
 228                               bool enable)
 229 {
 230         WREG32_ENDPOINT(pin->offset, AZ_F0_CODEC_PIN_CONTROL_HOTPLUG_CONTROL,
 231                         AUDIO_ENABLED);
 232         DRM_INFO("%s audio %d support\n", enable ? "Enabling" : "Disabling", pin->id);
 233 }
 234
 235 static const u32 pin_offsets[7] =
 236 {
 237         (0x5e00 - 0x5e00),
 238         (0x5e18 - 0x5e00),
 239         (0x5e30 - 0x5e00),
 240         (0x5e48 - 0x5e00),
 241         (0x5e60 - 0x5e00),
 242         (0x5e78 - 0x5e00),
 243         (0x5e90 - 0x5e00),
 244 };
 245
 246 int dce6_audio_init(struct radeon_device *rdev)
 247 {
 248         int i;
 249
 250         if (!radeon_audio || !dce6_audio_chipset_supported(rdev))
 251                 return 0;
 252
 253         rdev->audio.enabled = true;
 254
 255         if (ASIC_IS_DCE8(rdev))
 256                 rdev->audio.num_pins = 7;
 257         else
 258                 rdev->audio.num_pins = 6;
 259
 260         for (i = 0; i < rdev->audio.num_pins; i++) {
 261                 rdev->audio.pin[i].channels = -1;
 262                 rdev->audio.pin[i].rate = -1;
 263                 rdev->audio.pin[i].bits_per_sample = -1;
 264                 rdev->audio.pin[i].status_bits = 0;
 265                 rdev->audio.pin[i].category_code = 0;
 266                 rdev->audio.pin[i].connected = false;
 267                 rdev->audio.pin[i].offset = pin_offsets[i];
 268                 rdev->audio.pin[i].id = i;
 269                 dce6_audio_enable(rdev, &rdev->audio.pin[i], true);
 270         }
 271
 272         return 0;
 273 }
 274
 275 void dce6_audio_fini(struct radeon_device *rdev)
 276 {
 277         int i;
 278
 279         if (!rdev->audio.enabled)
 280                 return;
 281
 282         for (i = 0; i < rdev->audio.num_pins; i++)
 283                 dce6_audio_enable(rdev, &rdev->audio.pin[i], false);
 284
 285         rdev->audio.enabled = false;
 286 }