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
  45 static const u32 pin_offsets[7] =
  46 {
  47         (0x5e00 - 0x5e00),
  48         (0x5e18 - 0x5e00),
  49         (0x5e30 - 0x5e00),
  50         (0x5e48 - 0x5e00),
  51         (0x5e60 - 0x5e00),
  52         (0x5e78 - 0x5e00),
  53         (0x5e90 - 0x5e00),
  54 };
  55
  56 static u32 radeon_audio_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
  57 {
  58         return RREG32(reg);
  59 }
  60
  61 static void radeon_audio_wreg(struct radeon_device *rdev, u32 offset,
  62                 u32 reg, u32 v)
  63 {
  64         WREG32(reg, v);
  65 }
  66
  67 static struct radeon_audio_basic_funcs dce32_funcs = {
  68         .endpoint_rreg = radeon_audio_rreg,
  69         .endpoint_wreg = radeon_audio_wreg,
  70 };
  71
  72 static struct radeon_audio_basic_funcs dce4_funcs = {
  73         .endpoint_rreg = radeon_audio_rreg,
  74         .endpoint_wreg = radeon_audio_wreg,
  75 };
  76
  77 static struct radeon_audio_basic_funcs dce6_funcs = {
  78         .endpoint_rreg = dce6_endpoint_rreg,
  79         .endpoint_wreg = dce6_endpoint_wreg,
  80 };
  81
  82 static struct radeon_audio_funcs dce32_hdmi_funcs = {
  83         .write_sad_regs = dce3_2_afmt_write_sad_regs,
  84 };
  85
  86 static struct radeon_audio_funcs dce32_dp_funcs = {
  87         .write_sad_regs = dce3_2_afmt_write_sad_regs,
  88 };
  89
  90 static struct radeon_audio_funcs dce4_hdmi_funcs = {
  91         .write_sad_regs = evergreen_hdmi_write_sad_regs,
  92 };
  93
  94 static struct radeon_audio_funcs dce4_dp_funcs = {
  95         .write_sad_regs = evergreen_hdmi_write_sad_regs,
  96 };
  97
  98 static struct radeon_audio_funcs dce6_hdmi_funcs = {
  99         .write_sad_regs = dce6_afmt_write_sad_regs,
 100 };
 101
 102 static struct radeon_audio_funcs dce6_dp_funcs = {
 103         .write_sad_regs = dce6_afmt_write_sad_regs,
 104 };
 105
 106 static void radeon_audio_interface_init(struct radeon_device *rdev)
 107 {
 108         if (ASIC_IS_DCE6(rdev)) {
 109                 rdev->audio.funcs = &dce6_funcs;
 110                 rdev->audio.hdmi_funcs = &dce6_hdmi_funcs;
 111                 rdev->audio.dp_funcs = &dce6_dp_funcs;
 112         } else if (ASIC_IS_DCE4(rdev)) {
 113                 rdev->audio.funcs = &dce4_funcs;
 114                 rdev->audio.hdmi_funcs = &dce4_hdmi_funcs;
 115                 rdev->audio.dp_funcs = &dce4_dp_funcs;
 116         } else {
 117                 rdev->audio.funcs = &dce32_funcs;
 118                 rdev->audio.hdmi_funcs = &dce32_hdmi_funcs;
 119                 rdev->audio.dp_funcs = &dce32_dp_funcs;
 120         }
 121 }
 122
 123 static int radeon_audio_chipset_supported(struct radeon_device *rdev)
 124 {
 125         return ASIC_IS_DCE2(rdev) && !ASIC_IS_NODCE(rdev);
 126 }
 127
 128 int radeon_audio_init(struct radeon_device *rdev)
 129 {
 130         int i;
 131
 132         if (!radeon_audio || !radeon_audio_chipset_supported(rdev))
 133                 return 0;
 134
 135         rdev->audio.enabled = true;
 136
 137         if (ASIC_IS_DCE83(rdev))                /* KB: 2 streams, 3 endpoints */
 138                 rdev->audio.num_pins = 3;
 139         else if (ASIC_IS_DCE81(rdev))   /* KV: 4 streams, 7 endpoints */
 140                 rdev->audio.num_pins = 7;
 141         else if (ASIC_IS_DCE8(rdev))    /* BN/HW: 6 streams, 7 endpoints */
 142                 rdev->audio.num_pins = 7;
 143         else if (ASIC_IS_DCE64(rdev))   /* OL: 2 streams, 2 endpoints */
 144                 rdev->audio.num_pins = 2;
 145         else if (ASIC_IS_DCE61(rdev))   /* TN: 4 streams, 6 endpoints */
 146                 rdev->audio.num_pins = 6;
 147         else if (ASIC_IS_DCE6(rdev))    /* SI: 6 streams, 6 endpoints */
 148                 rdev->audio.num_pins = 6;
 149         else
 150                 rdev->audio.num_pins = 1;
 151
 152         for (i = 0; i < rdev->audio.num_pins; i++) {
 153                 rdev->audio.pin[i].channels = -1;
 154                 rdev->audio.pin[i].rate = -1;
 155                 rdev->audio.pin[i].bits_per_sample = -1;
 156                 rdev->audio.pin[i].status_bits = 0;
 157                 rdev->audio.pin[i].category_code = 0;
 158                 rdev->audio.pin[i].connected = false;
 159                 rdev->audio.pin[i].offset = pin_offsets[i];
 160                 rdev->audio.pin[i].id = i;
 161         }
 162
 163         radeon_audio_interface_init(rdev);
 164
 165         /* disable audio.  it will be set up later */
 166         for (i = 0; i < rdev->audio.num_pins; i++)
 167                 if (ASIC_IS_DCE6(rdev))
 168                         dce6_audio_enable(rdev, &rdev->audio.pin[i], false);
 169                 else
 170                         r600_audio_enable(rdev, &rdev->audio.pin[i], false);
 171
 172         return 0;
 173 }
 174
 175 void radeon_audio_detect(struct drm_connector *connector,
 176         enum drm_connector_status status)
 177 {
 178         if (!connector || !connector->encoder)
 179                 return;
 180
 181         if (status == connector_status_connected) {
 182                 int sink_type;
 183                 struct radeon_device *rdev = connector->encoder->dev->dev_private;
 184                 struct radeon_connector *radeon_connector;
 185                 struct radeon_encoder *radeon_encoder =
 186                         to_radeon_encoder(connector->encoder);
 187
 188                 if (!drm_detect_monitor_audio(radeon_connector_edid(connector))) {
 189                         radeon_encoder->audio = 0;
 190                         return;
 191                 }
 192
 193                 radeon_connector = to_radeon_connector(connector);
 194                 sink_type = radeon_dp_getsinktype(radeon_connector);
 195
 196                 if (connector->connector_type == DRM_MODE_CONNECTOR_DisplayPort &&
 197                         sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT)
 198                         radeon_encoder->audio = rdev->audio.dp_funcs;
 199                 else
 200                         radeon_encoder->audio = rdev->audio.hdmi_funcs;
 201                 /* TODO: set up the sads, etc. and set the audio enable_mask */
 202         } else {
 203                 /* TODO: reset the audio enable_mask */
 204         }
 205 }
 206
 207 u32 radeon_audio_endpoint_rreg(struct radeon_device *rdev, u32 offset, u32 reg)
 208 {
 209         if (rdev->audio.funcs->endpoint_rreg)
 210                 return rdev->audio.funcs->endpoint_rreg(rdev, offset, reg);
 211
 212         return 0;
 213 }
 214
 215 void radeon_audio_endpoint_wreg(struct radeon_device *rdev, u32 offset,
 216         u32 reg, u32 v)
 217 {
 218         if (rdev->audio.funcs->endpoint_wreg)
 219                 rdev->audio.funcs->endpoint_wreg(rdev, offset, reg, v);
 220 }
 221
 222 void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
 223 {
 224         struct radeon_encoder *radeon_encoder;
 225         struct drm_connector *connector;
 226         struct radeon_connector *radeon_connector = NULL;
 227         struct cea_sad *sads;
 228         int sad_count;
 229
 230         list_for_each_entry(connector,
 231                 &encoder->dev->mode_config.connector_list, head) {
 232                 if (connector->encoder == encoder) {
 233                         radeon_connector = to_radeon_connector(connector);
 234                         break;
 235                 }
 236         }
 237
 238         if (!radeon_connector) {
 239                 DRM_ERROR("Couldn't find encoder's connector\n");
 240                 return;
 241         }
 242
 243         sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
 244         if (sad_count <= 0) {
 245                 DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
 246                 return;
 247         }
 248         BUG_ON(!sads);
 249
 250         radeon_encoder = to_radeon_encoder(encoder);
 251
 252         if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)
 253                 radeon_encoder->audio->write_sad_regs(encoder, sads, sad_count);
 254
 255         kfree(sads);
 256 }