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320 lines
7.3 KiB
320 lines
7.3 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* oxfw-spkr.c - a part of driver for OXFW970/971 based devices |
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* |
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* Copyright (c) Clemens Ladisch <[email protected]> |
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*/ |
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#include "oxfw.h" |
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struct fw_spkr { |
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bool mute; |
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s16 volume[6]; |
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s16 volume_min; |
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s16 volume_max; |
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unsigned int mixer_channels; |
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u8 mute_fb_id; |
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u8 volume_fb_id; |
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}; |
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enum control_action { CTL_READ, CTL_WRITE }; |
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enum control_attribute { |
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CTL_MIN = 0x02, |
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CTL_MAX = 0x03, |
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CTL_CURRENT = 0x10, |
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}; |
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static int avc_audio_feature_mute(struct fw_unit *unit, u8 fb_id, bool *value, |
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enum control_action action) |
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{ |
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u8 *buf; |
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u8 response_ok; |
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int err; |
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buf = kmalloc(11, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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if (action == CTL_READ) { |
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buf[0] = 0x01; /* AV/C, STATUS */ |
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response_ok = 0x0c; /* STABLE */ |
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} else { |
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buf[0] = 0x00; /* AV/C, CONTROL */ |
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response_ok = 0x09; /* ACCEPTED */ |
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} |
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buf[1] = 0x08; /* audio unit 0 */ |
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buf[2] = 0xb8; /* FUNCTION BLOCK */ |
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buf[3] = 0x81; /* function block type: feature */ |
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buf[4] = fb_id; /* function block ID */ |
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buf[5] = 0x10; /* control attribute: current */ |
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buf[6] = 0x02; /* selector length */ |
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buf[7] = 0x00; /* audio channel number */ |
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buf[8] = 0x01; /* control selector: mute */ |
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buf[9] = 0x01; /* control data length */ |
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if (action == CTL_READ) |
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buf[10] = 0xff; |
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else |
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buf[10] = *value ? 0x70 : 0x60; |
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err = fcp_avc_transaction(unit, buf, 11, buf, 11, 0x3fe); |
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if (err < 0) |
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goto error; |
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if (err < 11) { |
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dev_err(&unit->device, "short FCP response\n"); |
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err = -EIO; |
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goto error; |
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} |
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if (buf[0] != response_ok) { |
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dev_err(&unit->device, "mute command failed\n"); |
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err = -EIO; |
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goto error; |
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} |
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if (action == CTL_READ) |
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*value = buf[10] == 0x70; |
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err = 0; |
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error: |
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kfree(buf); |
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return err; |
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} |
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static int avc_audio_feature_volume(struct fw_unit *unit, u8 fb_id, s16 *value, |
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unsigned int channel, |
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enum control_attribute attribute, |
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enum control_action action) |
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{ |
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u8 *buf; |
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u8 response_ok; |
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int err; |
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buf = kmalloc(12, GFP_KERNEL); |
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if (!buf) |
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return -ENOMEM; |
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if (action == CTL_READ) { |
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buf[0] = 0x01; /* AV/C, STATUS */ |
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response_ok = 0x0c; /* STABLE */ |
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} else { |
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buf[0] = 0x00; /* AV/C, CONTROL */ |
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response_ok = 0x09; /* ACCEPTED */ |
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} |
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buf[1] = 0x08; /* audio unit 0 */ |
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buf[2] = 0xb8; /* FUNCTION BLOCK */ |
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buf[3] = 0x81; /* function block type: feature */ |
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buf[4] = fb_id; /* function block ID */ |
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buf[5] = attribute; /* control attribute */ |
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buf[6] = 0x02; /* selector length */ |
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buf[7] = channel; /* audio channel number */ |
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buf[8] = 0x02; /* control selector: volume */ |
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buf[9] = 0x02; /* control data length */ |
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if (action == CTL_READ) { |
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buf[10] = 0xff; |
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buf[11] = 0xff; |
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} else { |
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buf[10] = *value >> 8; |
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buf[11] = *value; |
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} |
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err = fcp_avc_transaction(unit, buf, 12, buf, 12, 0x3fe); |
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if (err < 0) |
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goto error; |
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if (err < 12) { |
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dev_err(&unit->device, "short FCP response\n"); |
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err = -EIO; |
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goto error; |
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} |
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if (buf[0] != response_ok) { |
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dev_err(&unit->device, "volume command failed\n"); |
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err = -EIO; |
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goto error; |
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} |
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if (action == CTL_READ) |
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*value = (buf[10] << 8) | buf[11]; |
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err = 0; |
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error: |
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kfree(buf); |
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return err; |
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} |
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static int spkr_mute_get(struct snd_kcontrol *control, |
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struct snd_ctl_elem_value *value) |
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{ |
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struct snd_oxfw *oxfw = control->private_data; |
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struct fw_spkr *spkr = oxfw->spec; |
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value->value.integer.value[0] = !spkr->mute; |
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return 0; |
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} |
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static int spkr_mute_put(struct snd_kcontrol *control, |
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struct snd_ctl_elem_value *value) |
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{ |
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struct snd_oxfw *oxfw = control->private_data; |
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struct fw_spkr *spkr = oxfw->spec; |
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bool mute; |
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int err; |
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mute = !value->value.integer.value[0]; |
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if (mute == spkr->mute) |
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return 0; |
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err = avc_audio_feature_mute(oxfw->unit, spkr->mute_fb_id, &mute, |
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CTL_WRITE); |
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if (err < 0) |
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return err; |
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spkr->mute = mute; |
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return 1; |
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} |
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static int spkr_volume_info(struct snd_kcontrol *control, |
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struct snd_ctl_elem_info *info) |
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{ |
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struct snd_oxfw *oxfw = control->private_data; |
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struct fw_spkr *spkr = oxfw->spec; |
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info->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
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info->count = spkr->mixer_channels; |
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info->value.integer.min = spkr->volume_min; |
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info->value.integer.max = spkr->volume_max; |
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return 0; |
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} |
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static const u8 channel_map[6] = { 0, 1, 4, 5, 2, 3 }; |
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static int spkr_volume_get(struct snd_kcontrol *control, |
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struct snd_ctl_elem_value *value) |
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{ |
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struct snd_oxfw *oxfw = control->private_data; |
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struct fw_spkr *spkr = oxfw->spec; |
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unsigned int i; |
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for (i = 0; i < spkr->mixer_channels; ++i) |
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value->value.integer.value[channel_map[i]] = spkr->volume[i]; |
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return 0; |
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} |
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static int spkr_volume_put(struct snd_kcontrol *control, |
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struct snd_ctl_elem_value *value) |
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{ |
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struct snd_oxfw *oxfw = control->private_data; |
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struct fw_spkr *spkr = oxfw->spec; |
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unsigned int i, changed_channels; |
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bool equal_values = true; |
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s16 volume; |
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int err; |
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for (i = 0; i < spkr->mixer_channels; ++i) { |
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if (value->value.integer.value[i] < spkr->volume_min || |
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value->value.integer.value[i] > spkr->volume_max) |
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return -EINVAL; |
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if (value->value.integer.value[i] != |
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value->value.integer.value[0]) |
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equal_values = false; |
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} |
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changed_channels = 0; |
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for (i = 0; i < spkr->mixer_channels; ++i) |
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if (value->value.integer.value[channel_map[i]] != |
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spkr->volume[i]) |
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changed_channels |= 1 << (i + 1); |
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if (equal_values && changed_channels != 0) |
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changed_channels = 1 << 0; |
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for (i = 0; i <= spkr->mixer_channels; ++i) { |
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volume = value->value.integer.value[channel_map[i ? i - 1 : 0]]; |
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if (changed_channels & (1 << i)) { |
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err = avc_audio_feature_volume(oxfw->unit, |
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spkr->volume_fb_id, &volume, |
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i, CTL_CURRENT, CTL_WRITE); |
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if (err < 0) |
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return err; |
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} |
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if (i > 0) |
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spkr->volume[i - 1] = volume; |
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} |
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return changed_channels != 0; |
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} |
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int snd_oxfw_add_spkr(struct snd_oxfw *oxfw, bool is_lacie) |
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{ |
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static const struct snd_kcontrol_new controls[] = { |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
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.name = "PCM Playback Switch", |
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.info = snd_ctl_boolean_mono_info, |
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.get = spkr_mute_get, |
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.put = spkr_mute_put, |
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}, |
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{ |
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
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.name = "PCM Playback Volume", |
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.info = spkr_volume_info, |
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.get = spkr_volume_get, |
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.put = spkr_volume_put, |
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}, |
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}; |
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struct fw_spkr *spkr; |
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unsigned int i, first_ch; |
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int err; |
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spkr = devm_kzalloc(&oxfw->card->card_dev, sizeof(struct fw_spkr), |
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GFP_KERNEL); |
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if (!spkr) |
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return -ENOMEM; |
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oxfw->spec = spkr; |
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if (is_lacie) { |
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spkr->mixer_channels = 1; |
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spkr->mute_fb_id = 0x01; |
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spkr->volume_fb_id = 0x01; |
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} else { |
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spkr->mixer_channels = 6; |
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spkr->mute_fb_id = 0x01; |
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spkr->volume_fb_id = 0x02; |
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} |
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err = avc_audio_feature_volume(oxfw->unit, spkr->volume_fb_id, |
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&spkr->volume_min, 0, CTL_MIN, CTL_READ); |
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if (err < 0) |
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return err; |
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err = avc_audio_feature_volume(oxfw->unit, spkr->volume_fb_id, |
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&spkr->volume_max, 0, CTL_MAX, CTL_READ); |
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if (err < 0) |
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return err; |
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err = avc_audio_feature_mute(oxfw->unit, spkr->mute_fb_id, &spkr->mute, |
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CTL_READ); |
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if (err < 0) |
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return err; |
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first_ch = spkr->mixer_channels == 1 ? 0 : 1; |
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for (i = 0; i < spkr->mixer_channels; ++i) { |
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err = avc_audio_feature_volume(oxfw->unit, spkr->volume_fb_id, |
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&spkr->volume[i], first_ch + i, |
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CTL_CURRENT, CTL_READ); |
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if (err < 0) |
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return err; |
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} |
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for (i = 0; i < ARRAY_SIZE(controls); ++i) { |
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err = snd_ctl_add(oxfw->card, |
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snd_ctl_new1(&controls[i], oxfw)); |
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if (err < 0) |
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return err; |
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} |
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return 0; |
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}
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