From 03dd4cb26d967f9588437b0fc9cc0e8353322bb7 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Fri, 25 Mar 2016 03:53:42 -0300 Subject: Linux-libre 4.5-gnu --- sound/firewire/oxfw/oxfw-spkr.c | 319 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 319 insertions(+) create mode 100644 sound/firewire/oxfw/oxfw-spkr.c (limited to 'sound/firewire/oxfw/oxfw-spkr.c') diff --git a/sound/firewire/oxfw/oxfw-spkr.c b/sound/firewire/oxfw/oxfw-spkr.c new file mode 100644 index 000000000..cb905af06 --- /dev/null +++ b/sound/firewire/oxfw/oxfw-spkr.c @@ -0,0 +1,319 @@ +/* + * oxfw-spkr.c - a part of driver for OXFW970/971 based devices + * + * Copyright (c) Clemens Ladisch + * Licensed under the terms of the GNU General Public License, version 2. + */ + +#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 = kzalloc(sizeof(struct fw_spkr), GFP_KERNEL); + if (spkr == NULL) + 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; +} -- cgit v1.2.3-54-g00ecf