381 lines
11 KiB
C
381 lines
11 KiB
C
/*
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* Linux driver for TerraTec DMX 6Fire USB
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*
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* Mixer control
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*
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* Author: Torsten Schenk <torsten.schenk@zoho.com>
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* Created: Jan 01, 2011
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* Version: 0.3.0
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* Copyright: (C) Torsten Schenk
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/interrupt.h>
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#include <sound/control.h>
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#include "control.h"
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#include "comm.h"
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#include "chip.h"
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static char *opt_coax_texts[2] = { "Optical", "Coax" };
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static char *line_phono_texts[2] = { "Line", "Phono" };
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/*
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* calculated with $value\[i\] = 128 \cdot sqrt[3]{\frac{i}{128}}$
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* this is done because the linear values cause rapid degredation
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* of volume in the uppermost region.
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*/
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static const u8 log_volume_table[128] = {
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0x00, 0x19, 0x20, 0x24, 0x28, 0x2b, 0x2e, 0x30, 0x32, 0x34,
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0x36, 0x38, 0x3a, 0x3b, 0x3d, 0x3e, 0x40, 0x41, 0x42, 0x43,
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0x44, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e,
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0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x53, 0x54, 0x55, 0x56,
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0x56, 0x57, 0x58, 0x58, 0x59, 0x5a, 0x5b, 0x5b, 0x5c, 0x5c,
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0x5d, 0x5e, 0x5e, 0x5f, 0x60, 0x60, 0x61, 0x61, 0x62, 0x62,
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0x63, 0x63, 0x64, 0x65, 0x65, 0x66, 0x66, 0x67, 0x67, 0x68,
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0x68, 0x69, 0x69, 0x6a, 0x6a, 0x6b, 0x6b, 0x6c, 0x6c, 0x6c,
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0x6d, 0x6d, 0x6e, 0x6e, 0x6f, 0x6f, 0x70, 0x70, 0x70, 0x71,
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0x71, 0x72, 0x72, 0x73, 0x73, 0x73, 0x74, 0x74, 0x75, 0x75,
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0x75, 0x76, 0x76, 0x77, 0x77, 0x77, 0x78, 0x78, 0x78, 0x79,
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0x79, 0x7a, 0x7a, 0x7a, 0x7b, 0x7b, 0x7b, 0x7c, 0x7c, 0x7c,
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0x7d, 0x7d, 0x7d, 0x7e, 0x7e, 0x7e, 0x7f, 0x7f };
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/*
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* data that needs to be sent to device. sets up card internal stuff.
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* values dumped from windows driver and filtered by trial'n'error.
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*/
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static const struct {
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u8 type;
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u8 reg;
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u8 value;
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}
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init_data[] = {
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{ 0x22, 0x00, 0x00 }, { 0x20, 0x00, 0x08 }, { 0x22, 0x01, 0x01 },
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{ 0x20, 0x01, 0x08 }, { 0x22, 0x02, 0x00 }, { 0x20, 0x02, 0x08 },
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{ 0x22, 0x03, 0x00 }, { 0x20, 0x03, 0x08 }, { 0x22, 0x04, 0x00 },
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{ 0x20, 0x04, 0x08 }, { 0x22, 0x05, 0x01 }, { 0x20, 0x05, 0x08 },
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{ 0x22, 0x04, 0x01 }, { 0x12, 0x04, 0x00 }, { 0x12, 0x05, 0x00 },
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{ 0x12, 0x0d, 0x78 }, { 0x12, 0x21, 0x82 }, { 0x12, 0x22, 0x80 },
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{ 0x12, 0x23, 0x00 }, { 0x12, 0x06, 0x02 }, { 0x12, 0x03, 0x00 },
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{ 0x12, 0x02, 0x00 }, { 0x22, 0x03, 0x01 },
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{ 0 } /* TERMINATING ENTRY */
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};
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static const int rates_altsetting[] = { 1, 1, 2, 2, 3, 3 };
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/* values to write to soundcard register for all samplerates */
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static const u16 rates_6fire_vl[] = {0x00, 0x01, 0x00, 0x01, 0x00, 0x01};
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static const u16 rates_6fire_vh[] = {0x11, 0x11, 0x10, 0x10, 0x00, 0x00};
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enum {
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DIGITAL_THRU_ONLY_SAMPLERATE = 3
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};
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static void usb6fire_control_master_vol_update(struct control_runtime *rt)
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{
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struct comm_runtime *comm_rt = rt->chip->comm;
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if (comm_rt) {
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/* set volume */
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comm_rt->write8(comm_rt, 0x12, 0x0f, 0x7f -
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log_volume_table[rt->master_vol]);
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/* unmute */
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comm_rt->write8(comm_rt, 0x12, 0x0e, 0x00);
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}
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}
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static void usb6fire_control_line_phono_update(struct control_runtime *rt)
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{
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struct comm_runtime *comm_rt = rt->chip->comm;
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if (comm_rt) {
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comm_rt->write8(comm_rt, 0x22, 0x02, rt->line_phono_switch);
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comm_rt->write8(comm_rt, 0x21, 0x02, rt->line_phono_switch);
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}
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}
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static void usb6fire_control_opt_coax_update(struct control_runtime *rt)
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{
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struct comm_runtime *comm_rt = rt->chip->comm;
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if (comm_rt) {
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comm_rt->write8(comm_rt, 0x22, 0x00, rt->opt_coax_switch);
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comm_rt->write8(comm_rt, 0x21, 0x00, rt->opt_coax_switch);
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}
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}
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static int usb6fire_control_set_rate(struct control_runtime *rt, int rate)
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{
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int ret;
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struct usb_device *device = rt->chip->dev;
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struct comm_runtime *comm_rt = rt->chip->comm;
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if (rate < 0 || rate >= CONTROL_N_RATES)
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return -EINVAL;
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ret = usb_set_interface(device, 1, rates_altsetting[rate]);
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if (ret < 0)
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return ret;
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/* set soundcard clock */
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ret = comm_rt->write16(comm_rt, 0x02, 0x01, rates_6fire_vl[rate],
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rates_6fire_vh[rate]);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int usb6fire_control_set_channels(
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struct control_runtime *rt, int n_analog_out,
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int n_analog_in, bool spdif_out, bool spdif_in)
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{
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int ret;
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struct comm_runtime *comm_rt = rt->chip->comm;
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/* enable analog inputs and outputs
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* (one bit per stereo-channel) */
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ret = comm_rt->write16(comm_rt, 0x02, 0x02,
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(1 << (n_analog_out / 2)) - 1,
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(1 << (n_analog_in / 2)) - 1);
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if (ret < 0)
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return ret;
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/* disable digital inputs and outputs */
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/* TODO: use spdif_x to enable/disable digital channels */
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ret = comm_rt->write16(comm_rt, 0x02, 0x03, 0x00, 0x00);
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if (ret < 0)
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return ret;
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return 0;
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}
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static int usb6fire_control_streaming_update(struct control_runtime *rt)
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{
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struct comm_runtime *comm_rt = rt->chip->comm;
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if (comm_rt) {
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if (!rt->usb_streaming && rt->digital_thru_switch)
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usb6fire_control_set_rate(rt,
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DIGITAL_THRU_ONLY_SAMPLERATE);
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return comm_rt->write16(comm_rt, 0x02, 0x00, 0x00,
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(rt->usb_streaming ? 0x01 : 0x00) |
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(rt->digital_thru_switch ? 0x08 : 0x00));
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}
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return -EINVAL;
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}
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static int usb6fire_control_master_vol_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
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uinfo->count = 1;
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uinfo->value.integer.min = 0;
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uinfo->value.integer.max = 127;
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return 0;
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}
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static int usb6fire_control_master_vol_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
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int changed = 0;
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if (rt->master_vol != ucontrol->value.integer.value[0]) {
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rt->master_vol = ucontrol->value.integer.value[0];
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usb6fire_control_master_vol_update(rt);
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changed = 1;
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}
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return changed;
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}
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static int usb6fire_control_master_vol_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
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ucontrol->value.integer.value[0] = rt->master_vol;
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return 0;
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}
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static int usb6fire_control_line_phono_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 2;
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if (uinfo->value.enumerated.item > 1)
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uinfo->value.enumerated.item = 1;
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strcpy(uinfo->value.enumerated.name,
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line_phono_texts[uinfo->value.enumerated.item]);
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return 0;
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}
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static int usb6fire_control_line_phono_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
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int changed = 0;
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if (rt->line_phono_switch != ucontrol->value.integer.value[0]) {
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rt->line_phono_switch = ucontrol->value.integer.value[0];
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usb6fire_control_line_phono_update(rt);
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changed = 1;
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}
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return changed;
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}
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static int usb6fire_control_line_phono_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
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ucontrol->value.integer.value[0] = rt->line_phono_switch;
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return 0;
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}
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static int usb6fire_control_opt_coax_info(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_info *uinfo)
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{
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uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
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uinfo->count = 1;
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uinfo->value.enumerated.items = 2;
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if (uinfo->value.enumerated.item > 1)
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uinfo->value.enumerated.item = 1;
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strcpy(uinfo->value.enumerated.name,
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opt_coax_texts[uinfo->value.enumerated.item]);
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return 0;
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}
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static int usb6fire_control_opt_coax_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
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int changed = 0;
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if (rt->opt_coax_switch != ucontrol->value.enumerated.item[0]) {
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rt->opt_coax_switch = ucontrol->value.enumerated.item[0];
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usb6fire_control_opt_coax_update(rt);
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changed = 1;
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}
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return changed;
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}
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static int usb6fire_control_opt_coax_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
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ucontrol->value.enumerated.item[0] = rt->opt_coax_switch;
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return 0;
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}
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static int usb6fire_control_digital_thru_put(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
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int changed = 0;
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if (rt->digital_thru_switch != ucontrol->value.integer.value[0]) {
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rt->digital_thru_switch = ucontrol->value.integer.value[0];
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usb6fire_control_streaming_update(rt);
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changed = 1;
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}
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return changed;
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}
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static int usb6fire_control_digital_thru_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct control_runtime *rt = snd_kcontrol_chip(kcontrol);
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ucontrol->value.integer.value[0] = rt->digital_thru_switch;
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return 0;
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}
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static struct __devinitdata snd_kcontrol_new elements[] = {
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{
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "Master Playback Volume",
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.index = 0,
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
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.info = usb6fire_control_master_vol_info,
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.get = usb6fire_control_master_vol_get,
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.put = usb6fire_control_master_vol_put
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},
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{
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "Line/Phono Capture Route",
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.index = 0,
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
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.info = usb6fire_control_line_phono_info,
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.get = usb6fire_control_line_phono_get,
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.put = usb6fire_control_line_phono_put
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},
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{
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "Opt/Coax Capture Route",
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.index = 0,
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
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.info = usb6fire_control_opt_coax_info,
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.get = usb6fire_control_opt_coax_get,
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.put = usb6fire_control_opt_coax_put
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},
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{
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.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
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.name = "Digital Thru Playback Route",
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.index = 0,
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.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
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.info = snd_ctl_boolean_mono_info,
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.get = usb6fire_control_digital_thru_get,
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.put = usb6fire_control_digital_thru_put
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},
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{}
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};
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int __devinit usb6fire_control_init(struct sfire_chip *chip)
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{
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int i;
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int ret;
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struct control_runtime *rt = kzalloc(sizeof(struct control_runtime),
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GFP_KERNEL);
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struct comm_runtime *comm_rt = chip->comm;
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if (!rt)
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return -ENOMEM;
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rt->chip = chip;
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rt->update_streaming = usb6fire_control_streaming_update;
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rt->set_rate = usb6fire_control_set_rate;
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rt->set_channels = usb6fire_control_set_channels;
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i = 0;
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while (init_data[i].type) {
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comm_rt->write8(comm_rt, init_data[i].type, init_data[i].reg,
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init_data[i].value);
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i++;
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}
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usb6fire_control_opt_coax_update(rt);
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usb6fire_control_line_phono_update(rt);
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usb6fire_control_master_vol_update(rt);
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usb6fire_control_streaming_update(rt);
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i = 0;
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while (elements[i].name) {
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ret = snd_ctl_add(chip->card, snd_ctl_new1(&elements[i], rt));
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if (ret < 0) {
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kfree(rt);
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snd_printk(KERN_ERR PREFIX "cannot add control.\n");
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return ret;
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}
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i++;
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}
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chip->control = rt;
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return 0;
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}
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void usb6fire_control_abort(struct sfire_chip *chip)
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{}
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void usb6fire_control_destroy(struct sfire_chip *chip)
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{
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kfree(chip->control);
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chip->control = NULL;
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}
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