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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 | // SPDX-License-Identifier: GPL-2.0-only /* * oxfw-spkr.c - a part of driver for OXFW970/971 based devices * * Copyright (c) Clemens Ladisch <clemens@ladisch.de> */ #include "oxfw.h" struct fw_spkr { bool mute; s16 volume[6]; s16 volume_min; s16 volume_max; unsigned int mixer_channels; u8 mute_fb_id; u8 volume_fb_id; }; enum control_action { CTL_READ, CTL_WRITE }; enum control_attribute { CTL_MIN = 0x02, CTL_MAX = 0x03, CTL_CURRENT = 0x10, }; static int avc_audio_feature_mute(struct fw_unit *unit, u8 fb_id, bool *value, enum control_action action) { u8 *buf; u8 response_ok; int err; buf = kmalloc(11, GFP_KERNEL); if (!buf) return -ENOMEM; if (action == CTL_READ) { buf[0] = 0x01; /* AV/C, STATUS */ response_ok = 0x0c; /* STABLE */ } else { buf[0] = 0x00; /* AV/C, CONTROL */ response_ok = 0x09; /* ACCEPTED */ } buf[1] = 0x08; /* audio unit 0 */ buf[2] = 0xb8; /* FUNCTION BLOCK */ buf[3] = 0x81; /* function block type: feature */ buf[4] = fb_id; /* function block ID */ buf[5] = 0x10; /* control attribute: current */ buf[6] = 0x02; /* selector length */ buf[7] = 0x00; /* audio channel number */ buf[8] = 0x01; /* control selector: mute */ buf[9] = 0x01; /* control data length */ if (action == CTL_READ) buf[10] = 0xff; else buf[10] = *value ? 0x70 : 0x60; err = fcp_avc_transaction(unit, buf, 11, buf, 11, 0x3fe); if (err < 0) goto error; if (err < 11) { dev_err(&unit->device, "short FCP response\n"); err = -EIO; goto error; } if (buf[0] != response_ok) { dev_err(&unit->device, "mute command failed\n"); err = -EIO; goto error; } if (action == CTL_READ) *value = buf[10] == 0x70; err = 0; error: kfree(buf); return err; } static int avc_audio_feature_volume(struct fw_unit *unit, u8 fb_id, s16 *value, unsigned int channel, enum control_attribute attribute, enum control_action action) { u8 *buf; u8 response_ok; int err; buf = kmalloc(12, GFP_KERNEL); if (!buf) return -ENOMEM; if (action == CTL_READ) { buf[0] = 0x01; /* AV/C, STATUS */ response_ok = 0x0c; /* STABLE */ } else { buf[0] = 0x00; /* AV/C, CONTROL */ response_ok = 0x09; /* ACCEPTED */ } buf[1] = 0x08; /* audio unit 0 */ buf[2] = 0xb8; /* FUNCTION BLOCK */ buf[3] = 0x81; /* function block type: feature */ buf[4] = fb_id; /* function block ID */ buf[5] = attribute; /* control attribute */ buf[6] = 0x02; /* selector length */ buf[7] = channel; /* audio channel number */ buf[8] = 0x02; /* control selector: volume */ buf[9] = 0x02; /* control data length */ if (action == CTL_READ) { buf[10] = 0xff; buf[11] = 0xff; } else { buf[10] = *value >> 8; buf[11] = *value; } err = fcp_avc_transaction(unit, buf, 12, buf, 12, 0x3fe); if (err < 0) goto error; if (err < 12) { dev_err(&unit->device, "short FCP response\n"); err = -EIO; goto error; } if (buf[0] != response_ok) { dev_err(&unit->device, "volume command failed\n"); err = -EIO; goto error; } if (action == CTL_READ) *value = (buf[10] << 8) | buf[11]; err = 0; error: kfree(buf); return err; } static int spkr_mute_get(struct snd_kcontrol *control, struct snd_ctl_elem_value *value) { struct snd_oxfw *oxfw = control->private_data; struct fw_spkr *spkr = oxfw->spec; value->value.integer.value[0] = !spkr->mute; return 0; } static int spkr_mute_put(struct snd_kcontrol *control, struct snd_ctl_elem_value *value) { struct snd_oxfw *oxfw = control->private_data; struct fw_spkr *spkr = oxfw->spec; bool mute; int err; mute = !value->value.integer.value[0]; if (mute == spkr->mute) return 0; err = avc_audio_feature_mute(oxfw->unit, spkr->mute_fb_id, &mute, CTL_WRITE); if (err < 0) return err; spkr->mute = mute; return 1; } static int spkr_volume_info(struct snd_kcontrol *control, struct snd_ctl_elem_info *info) { struct snd_oxfw *oxfw = control->private_data; struct fw_spkr *spkr = oxfw->spec; info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; info->count = spkr->mixer_channels; info->value.integer.min = spkr->volume_min; info->value.integer.max = spkr->volume_max; return 0; } static const u8 channel_map[6] = { 0, 1, 4, 5, 2, 3 }; static int spkr_volume_get(struct snd_kcontrol *control, struct snd_ctl_elem_value *value) { struct snd_oxfw *oxfw = control->private_data; struct fw_spkr *spkr = oxfw->spec; unsigned int i; for (i = 0; i < spkr->mixer_channels; ++i) value->value.integer.value[channel_map[i]] = spkr->volume[i]; return 0; } static int spkr_volume_put(struct snd_kcontrol *control, struct snd_ctl_elem_value *value) { struct snd_oxfw *oxfw = control->private_data; struct fw_spkr *spkr = oxfw->spec; unsigned int i, changed_channels; bool equal_values = true; s16 volume; int err; for (i = 0; i < spkr->mixer_channels; ++i) { if (value->value.integer.value[i] < spkr->volume_min || value->value.integer.value[i] > spkr->volume_max) return -EINVAL; if (value->value.integer.value[i] != value->value.integer.value[0]) equal_values = false; } changed_channels = 0; for (i = 0; i < spkr->mixer_channels; ++i) if (value->value.integer.value[channel_map[i]] != spkr->volume[i]) changed_channels |= 1 << (i + 1); if (equal_values && changed_channels != 0) changed_channels = 1 << 0; for (i = 0; i <= spkr->mixer_channels; ++i) { volume = value->value.integer.value[channel_map[i ? i - 1 : 0]]; if (changed_channels & (1 << i)) { err = avc_audio_feature_volume(oxfw->unit, spkr->volume_fb_id, &volume, i, CTL_CURRENT, CTL_WRITE); if (err < 0) return err; } if (i > 0) spkr->volume[i - 1] = volume; } return changed_channels != 0; } int snd_oxfw_add_spkr(struct snd_oxfw *oxfw, bool is_lacie) { static const struct snd_kcontrol_new controls[] = { { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "PCM Playback Switch", .info = snd_ctl_boolean_mono_info, .get = spkr_mute_get, .put = spkr_mute_put, }, { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = "PCM Playback Volume", .info = spkr_volume_info, .get = spkr_volume_get, .put = spkr_volume_put, }, }; struct fw_spkr *spkr; unsigned int i, first_ch; int err; spkr = devm_kzalloc(&oxfw->card->card_dev, sizeof(struct fw_spkr), GFP_KERNEL); if (!spkr) return -ENOMEM; oxfw->spec = spkr; if (is_lacie) { spkr->mixer_channels = 1; spkr->mute_fb_id = 0x01; spkr->volume_fb_id = 0x01; } else { spkr->mixer_channels = 6; spkr->mute_fb_id = 0x01; spkr->volume_fb_id = 0x02; } err = avc_audio_feature_volume(oxfw->unit, spkr->volume_fb_id, &spkr->volume_min, 0, CTL_MIN, CTL_READ); if (err < 0) return err; err = avc_audio_feature_volume(oxfw->unit, spkr->volume_fb_id, &spkr->volume_max, 0, CTL_MAX, CTL_READ); if (err < 0) return err; err = avc_audio_feature_mute(oxfw->unit, spkr->mute_fb_id, &spkr->mute, CTL_READ); if (err < 0) return err; first_ch = spkr->mixer_channels == 1 ? 0 : 1; for (i = 0; i < spkr->mixer_channels; ++i) { err = avc_audio_feature_volume(oxfw->unit, spkr->volume_fb_id, &spkr->volume[i], first_ch + i, CTL_CURRENT, CTL_READ); if (err < 0) return err; } for (i = 0; i < ARRAY_SIZE(controls); ++i) { err = snd_ctl_add(oxfw->card, snd_ctl_new1(&controls[i], oxfw)); if (err < 0) return err; } return 0; } |