drivers/gpu/drm/radeon/radeon_audio.c

   1 /*
   2  * Copyright 2014 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  * Authors: Slava Grigorev <slava.grigorev@amd.com>
  23  */
  24
  25 #include <drm/drmP.h>
  26 #include <drm/drm_crtc.h>
  27 #include "radeon.h"
  28 #include "atom.h"
  29 #include "radeon_audio.h"
  30
  31 void r600_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
  32                 u8 enable_mask);
  33 void dce6_audio_enable(struct radeon_device *rdev, struct r600_audio_pin *pin,
  34                 u8 enable_mask);
  35 u32 dce6_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg);
  36 void dce6_endpoint_wreg(struct radeon_device *rdev,
  37                 u32 offset, u32 reg, u32 v);
  38 void dce3_2_afmt_write_sad_regs(struct drm_encoder *encoder,
  39                 struct cea_sad *sads, int sad_count);
  40 void evergreen_hdmi_write_sad_regs(struct drm_encoder *encoder,
  41                 struct cea_sad *sads, int sad_count);
  42 void dce6_afmt_write_sad_regs(struct drm_encoder *encoder,
  43                 struct cea_sad *sads, int sad_count);
  44 void dce3_2_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
  45                 u8 *sadb, int sad_count);
  46 void dce3_2_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
  47                 u8 *sadb, int sad_count);
  48 void dce4_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
  49                 u8 *sadb, int sad_count);
  50 void dce4_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
  51                 u8 *sadb, int sad_count);
  52 void dce6_afmt_hdmi_write_speaker_allocation(struct drm_encoder *encoder,
  53                 u8 *sadb, int sad_count);
  54 void dce6_afmt_dp_write_speaker_allocation(struct drm_encoder *encoder,
  55                 u8 *sadb, int sad_count);
  56 void dce4_afmt_write_latency_fields(struct drm_encoder *encoder,
  57                 struct drm_connector *connector, struct drm_display_mode *mode);
  58 void dce6_afmt_write_latency_fields(struct drm_encoder *encoder,
  59                 struct drm_connector *connector, struct drm_display_mode *mode);
  60 struct r600_audio_pin* r600_audio_get_pin(struct radeon_device *rdev);
  61 struct r600_audio_pin* dce6_audio_get_pin(struct radeon_device *rdev);
  62 void dce6_afmt_select_pin(struct drm_encoder *encoder);
  63
  64 static const u32 pin_offsets[7] =
  65 {
  66         (0x5e00 - 0x5e00),
  67         (0x5e18 - 0x5e00),
  68         (0x5e30 - 0x5e00),
  69         (0x5e48 - 0x5e00),
  70         (0x5e60 - 0x5e00),
  71         (0x5e78 - 0x5e00),
  72         (0x5e90 - 0x5e00),
  73 };
  74
  75 static u32 radeon_audio_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
  76 {
  77         return RREG32(reg);
  78 }
  79
  80 static void radeon_audio_wreg(struct radeon_device *rdev, u32 offset,
  81                 u32 reg, u32 v)
  82 {
  83         WREG32(reg, v);
  84 }
  85
  86 static struct radeon_audio_basic_funcs dce32_funcs = {
  87         .endpoint_rreg = radeon_audio_rreg,
  88         .endpoint_wreg = radeon_audio_wreg,
  89 };
  90
  91 static struct radeon_audio_basic_funcs dce4_funcs = {
  92         .endpoint_rreg = radeon_audio_rreg,
  93         .endpoint_wreg = radeon_audio_wreg,
  94 };
  95
  96 static struct radeon_audio_basic_funcs dce6_funcs = {
  97         .endpoint_rreg = dce6_endpoint_rreg,
  98         .endpoint_wreg = dce6_endpoint_wreg,
  99 };
 100
 101 static struct radeon_audio_funcs dce32_hdmi_funcs = {
 102         .get_pin = r600_audio_get_pin,
 103         .write_sad_regs = dce3_2_afmt_write_sad_regs,
 104         .write_speaker_allocation = dce3_2_afmt_hdmi_write_speaker_allocation,
 105 };
 106
 107 static struct radeon_audio_funcs dce32_dp_funcs = {
 108         .get_pin = r600_audio_get_pin,
 109         .write_sad_regs = dce3_2_afmt_write_sad_regs,
 110         .write_speaker_allocation = dce3_2_afmt_dp_write_speaker_allocation,
 111 };
 112
 113 static struct radeon_audio_funcs dce4_hdmi_funcs = {
 114         .get_pin = r600_audio_get_pin,
 115         .write_sad_regs = evergreen_hdmi_write_sad_regs,
 116         .write_speaker_allocation = dce4_afmt_hdmi_write_speaker_allocation,
 117         .write_latency_fields = dce4_afmt_write_latency_fields,
 118 };
 119
 120 static struct radeon_audio_funcs dce4_dp_funcs = {
 121         .get_pin = r600_audio_get_pin,
 122         .write_sad_regs = evergreen_hdmi_write_sad_regs,
 123         .write_speaker_allocation = dce4_afmt_dp_write_speaker_allocation,
 124         .write_latency_fields = dce4_afmt_write_latency_fields,
 125 };
 126
 127 static struct radeon_audio_funcs dce6_hdmi_funcs = {
 128         .select_pin = dce6_afmt_select_pin,
 129         .get_pin = dce6_audio_get_pin,
 130         .write_sad_regs = dce6_afmt_write_sad_regs,
 131         .write_speaker_allocation = dce6_afmt_hdmi_write_speaker_allocation,
 132         .write_latency_fields = dce6_afmt_write_latency_fields,
 133 };
 134
 135 static struct radeon_audio_funcs dce6_dp_funcs = {
 136         .select_pin = dce6_afmt_select_pin,
 137         .get_pin = dce6_audio_get_pin,
 138         .write_sad_regs = dce6_afmt_write_sad_regs,
 139         .write_speaker_allocation = dce6_afmt_dp_write_speaker_allocation,
 140         .write_latency_fields = dce6_afmt_write_latency_fields,
 141 };
 142
 143 static void radeon_audio_interface_init(struct radeon_device *rdev)
 144 {
 145         if (ASIC_IS_DCE6(rdev)) {
 146                 rdev->audio.funcs = &dce6_funcs;
 147                 rdev->audio.hdmi_funcs = &dce6_hdmi_funcs;
 148                 rdev->audio.dp_funcs = &dce6_dp_funcs;
 149         } else if (ASIC_IS_DCE4(rdev)) {
 150                 rdev->audio.funcs = &dce4_funcs;
 151                 rdev->audio.hdmi_funcs = &dce4_hdmi_funcs;
 152                 rdev->audio.dp_funcs = &dce4_dp_funcs;
 153         } else {
 154                 rdev->audio.funcs = &dce32_funcs;
 155                 rdev->audio.hdmi_funcs = &dce32_hdmi_funcs;
 156                 rdev->audio.dp_funcs = &dce32_dp_funcs;
 157         }
 158 }
 159
 160 static int radeon_audio_chipset_supported(struct radeon_device *rdev)
 161 {
 162         return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);
 163 }
 164
 165 int radeon_audio_init(struct radeon_device *rdev)
 166 {
 167         int i;
 168
 169         if (!radeon_audio || !radeon_audio_chipset_supported(rdev))
 170                 return 0;
 171
 172         rdev->audio.enabled = true;
 173
 174         if (ASIC_IS_DCE83(rdev))                /* KB: 2 streams, 3 endpoints */
 175                 rdev->audio.num_pins = 3;
 176         else if (ASIC_IS_DCE81(rdev))   /* KV: 4 streams, 7 endpoints */
 177                 rdev->audio.num_pins = 7;
 178         else if (ASIC_IS_DCE8(rdev))    /* BN/HW: 6 streams, 7 endpoints */
 179                 rdev->audio.num_pins = 7;
 180         else if (ASIC_IS_DCE64(rdev))   /* OL: 2 streams, 2 endpoints */
 181                 rdev->audio.num_pins = 2;
 182         else if (ASIC_IS_DCE61(rdev))   /* TN: 4 streams, 6 endpoints */
 183                 rdev->audio.num_pins = 6;
 184         else if (ASIC_IS_DCE6(rdev))    /* SI: 6 streams, 6 endpoints */
 185                 rdev->audio.num_pins = 6;
 186         else
 187                 rdev->audio.num_pins = 1;
 188
 189         for (i = 0; i < rdev->audio.num_pins; i++) {
 190                 rdev->audio.pin[i].channels = -1;
 191                 rdev->audio.pin[i].rate = -1;
 192                 rdev->audio.pin[i].bits_per_sample = -1;
 193                 rdev->audio.pin[i].status_bits = 0;
 194                 rdev->audio.pin[i].category_code = 0;
 195                 rdev->audio.pin[i].connected = false;
 196                 rdev->audio.pin[i].offset = pin_offsets[i];
 197                 rdev->audio.pin[i].id = i;
 198         }
 199
 200         radeon_audio_interface_init(rdev);
 201
 202         /* disable audio.  it will be set up later */
 203         for (i = 0; i < rdev->audio.num_pins; i++)
 204                 if (ASIC_IS_DCE6(rdev))
 205                         dce6_audio_enable(rdev, &rdev->audio.pin[i], false);
 206                 else
 207                         r600_audio_enable(rdev, &rdev->audio.pin[i], false);
 208
 209         return 0;
 210 }
 211
 212 void radeon_audio_detect(struct drm_connector *connector,
 213         enum drm_connector_status status)
 214 {
 215         if (!connector || !connector->encoder)
 216                 return;
 217
 218         if (status == connector_status_connected) {
 219                 int sink_type;
 220                 struct radeon_device *rdev = connector->encoder->dev->dev_private;
 221                 struct radeon_connector *radeon_connector;
 222                 struct radeon_encoder *radeon_encoder =
 223                         to_radeon_encoder(connector->encoder);
 224
 225                 if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 226                         radeon_encoder->audio = 0;
 227                         return;
 228                 }
 229
 230                 radeon_connector = to_radeon_connector(connector);
 231                 sink_type = radeon_dp_getsinktype(radeon_connector);
 232
 233                 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
 234                         sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
 235                         radeon_encoder->audio = rdev->audio.dp_funcs;
 236                 else
 237                         radeon_encoder->audio = rdev->audio.hdmi_funcs;
 238                 /* TODO: set up the sads, etc. and set the audio enable_mask */
 239         } else {
 240                 /* TODO: reset the audio enable_mask */
 241         }
 242 }
 243
 244 u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
 245 {
 246         if (rdev->audio.funcs->endpoint_rreg)
 247                 return rdev->audio.funcs->endpoint_rreg(rdev, offset, reg);
 248
 249         return 0;
 250 }
 251
 252 void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,
 253         u32 reg, u32 v)
 254 {
 255         if (rdev->audio.funcs->endpoint_wreg)
 256                 rdev->audio.funcs->endpoint_wreg(rdev, offset, reg, v);
 257 }
 258
 259 void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
 260 {
 261         struct radeon_encoder *radeon_encoder;
 262         struct drm_connector *connector;
 263         struct radeon_connector *radeon_connector = NULL;
 264         struct cea_sad *sads;
 265         int sad_count;
 266
 267         list_for_each_entry(connector,
 268                 &encoder->dev->mode_config.connector_list, head) {
 269                 if (connector->encoder == encoder) {
 270                         radeon_connector = to_radeon_connector(connector);
 271                         break;
 272                 }
 273         }
 274
 275         if (!radeon_connector) {
 276                 DRM_ERROR("Couldn't find encoder's connector\n");
 277                 return;
 278         }
 279
 280         sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
 281         if (sad_count <= 0) {
 282                 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
 283                 return;
 284         }
 285         BUG_ON(!sads);
 286
 287         radeon_encoder = to_radeon_encoder(encoder);
 288
 289         if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)
 290                 radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);
 291
 292         kfree(sads);
 293 }
 294
 295 void radeon_audio_write_speaker_allocation(struct drm_encoder *encoder)
 296 {
 297         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 298     struct drm_connector *connector;
 299     struct radeon_connector *radeon_connector = NULL;
 300     u8 *sadb = NULL;
 301     int sad_count;
 302
 303     list_for_each_entry(connector,
 304                 &encoder->dev->mode_config.connector_list, head) {
 305         if (connector->encoder == encoder) {
 306             radeon_connector = to_radeon_connector(connector);
 307             break;
 308         }
 309     }
 310
 311     if (!radeon_connector) {
 312         DRM_ERROR("Couldn't find encoder's connector\n");
 313         return;
 314     }
 315
 316     sad_count = drm_edid_to_speaker_allocation(
 317                 radeon_connector_edid(connector), &sadb);
 318     if (sad_count < 0) {
 319         DRM_DEBUG("Couldn't read Speaker Allocation Data Block: %d\n",
 320                         sad_count);
 321         sad_count = 0;
 322     }
 323
 324         if (radeon_encoder->audio && radeon_encoder->audio->write_speaker_allocation)
 325                 radeon_encoder->audio->write_speaker_allocation(encoder, sadb, sad_count);
 326
 327     kfree(sadb);
 328 }
 329
 330 void radeon_audio_write_latency_fields(struct drm_encoder *encoder,
 331         struct drm_display_mode *mode)
 332 {
 333         struct radeon_encoder *radeon_encoder;
 334         struct drm_connector *connector;
 335         struct radeon_connector *radeon_connector = 0;
 336
 337         list_for_each_entry(connector,
 338                 &encoder->dev->mode_config.connector_list, head) {
 339                 if (connector->encoder == encoder) {
 340                         radeon_connector = to_radeon_connector(connector);
 341                         break;
 342                 }
 343         }
 344
 345         if (!radeon_connector) {
 346                 DRM_ERROR("Couldn't find encoder's connector\n");
 347                 return;
 348         }
 349
 350         radeon_encoder = to_radeon_encoder(encoder);
 351
 352         if (radeon_encoder->audio && radeon_encoder->audio->write_latency_fields)
 353                 radeon_encoder->audio->write_latency_fields(encoder, connector, mode);
 354 }
 355
 356 struct r600_audio_pin* radeon_audio_get_pin(struct drm_encoder *encoder)
 357 {
 358         struct radeon_device *rdev = encoder->dev->dev_private;
 359         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 360
 361         if (radeon_encoder->audio && radeon_encoder->audio->get_pin)
 362                 return radeon_encoder->audio->get_pin(rdev);
 363
 364         return NULL;
 365 }
 366
 367 void radeon_audio_select_pin(struct drm_encoder *encoder)
 368 {
 369         struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
 370
 371         if (radeon_encoder->audio && radeon_encoder->audio->select_pin)
 372                 radeon_encoder->audio->select_pin(encoder);
 373 }