forked from Minki/linux
Add M2Tech hiFace USB-SPDIF driver
Add driver for M2Tech hiFace USB-SPDIF interface and compatible devices. M2Tech hiFace and compatible devices offer a Hi-End S/PDIF Output Interface, see http://www.m2tech.biz/hiface.html The supported products are: * M2Tech Young * M2Tech hiFace * M2Tech North Star * M2Tech W4S Young * M2Tech Corrson * M2Tech AUDIA * M2Tech SL Audio * M2Tech Empirical * M2Tech Rockna * M2Tech Pathos * M2Tech Metronome * M2Tech CAD * M2Tech Audio Esclusive * M2Tech Rotel * M2Tech Eeaudio * The Chord Company CHORD * AVA Group A/S Vitus Signed-off-by: Antonio Ospite <ao2@amarulasolutions.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Antonio Ospite
Takashi Iwai
parent
04c9548c78
commit
a91c3fb2f8
@ -115,5 +115,36 @@ config SND_USB_6FIRE
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and further help can be found at
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http://sixfireusb.sourceforge.net
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config SND_USB_HIFACE
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tristate "M2Tech hiFace USB-SPDIF driver"
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select SND_PCM
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help
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Select this option to include support for M2Tech hiFace USB-SPDIF
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interface.
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This driver supports the original M2Tech hiFace and some other
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compatible devices. The supported products are:
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* M2Tech Young
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* M2Tech hiFace
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* M2Tech North Star
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* M2Tech W4S Young
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* M2Tech Corrson
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* M2Tech AUDIA
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* M2Tech SL Audio
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* M2Tech Empirical
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* M2Tech Rockna
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* M2Tech Pathos
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* M2Tech Metronome
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* M2Tech CAD
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* M2Tech Audio Esclusive
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* M2Tech Rotel
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* M2Tech Eeaudio
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* The Chord Company CHORD
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* AVA Group A/S Vitus
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To compile this driver as a module, choose M here: the module
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will be called snd-usb-hiface.
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endif # SND_USB
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@ -23,4 +23,4 @@ obj-$(CONFIG_SND_USB_UA101) += snd-usbmidi-lib.o
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obj-$(CONFIG_SND_USB_USX2Y) += snd-usbmidi-lib.o
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obj-$(CONFIG_SND_USB_US122L) += snd-usbmidi-lib.o
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obj-$(CONFIG_SND) += misc/ usx2y/ caiaq/ 6fire/
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obj-$(CONFIG_SND) += misc/ usx2y/ caiaq/ 6fire/ hiface/
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2
sound/usb/hiface/Makefile
Normal file
2
sound/usb/hiface/Makefile
Normal file
@ -0,0 +1,2 @@
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snd-usb-hiface-objs := chip.o pcm.o
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obj-$(CONFIG_SND_USB_HIFACE) += snd-usb-hiface.o
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297
sound/usb/hiface/chip.c
Normal file
297
sound/usb/hiface/chip.c
Normal file
@ -0,0 +1,297 @@
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/*
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* Linux driver for M2Tech hiFace compatible devices
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*
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* Copyright 2012-2013 (C) M2TECH S.r.l and Amarula Solutions B.V.
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*
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* Authors: Michael Trimarchi <michael@amarulasolutions.com>
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* Antonio Ospite <ao2@amarulasolutions.com>
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*
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* The driver is based on the work done in TerraTec DMX 6Fire USB
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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/module.h>
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#include <linux/slab.h>
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#include <sound/initval.h>
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#include "chip.h"
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#include "pcm.h"
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MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
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MODULE_AUTHOR("Antonio Ospite <ao2@amarulasolutions.com>");
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MODULE_DESCRIPTION("M2Tech hiFace USB-SPDIF audio driver");
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MODULE_LICENSE("GPL v2");
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MODULE_SUPPORTED_DEVICE("{{M2Tech,Young},"
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"{M2Tech,hiFace},"
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"{M2Tech,North Star},"
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"{M2Tech,W4S Young},"
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"{M2Tech,Corrson},"
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"{M2Tech,AUDIA},"
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"{M2Tech,SL Audio},"
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"{M2Tech,Empirical},"
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"{M2Tech,Rockna},"
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"{M2Tech,Pathos},"
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"{M2Tech,Metronome},"
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"{M2Tech,CAD},"
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"{M2Tech,Audio Esclusive},"
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"{M2Tech,Rotel},"
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"{M2Tech,Eeaudio},"
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"{The Chord Company,CHORD},"
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"{AVA Group A/S,Vitus}}");
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */
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static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
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#define DRIVER_NAME "snd-usb-hiface"
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#define CARD_NAME "hiFace"
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
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static DEFINE_MUTEX(register_mutex);
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struct hiface_vendor_quirk {
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const char *device_name;
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u8 extra_freq;
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};
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static int hiface_chip_create(struct usb_device *device, int idx,
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const struct hiface_vendor_quirk *quirk,
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struct hiface_chip **rchip)
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{
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struct snd_card *card = NULL;
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struct hiface_chip *chip;
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int ret;
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int len;
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*rchip = NULL;
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/* if we are here, card can be registered in alsa. */
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ret = snd_card_create(index[idx], id[idx], THIS_MODULE, sizeof(*chip), &card);
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if (ret < 0) {
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dev_err(&device->dev, "cannot create alsa card.\n");
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return ret;
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}
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strlcpy(card->driver, DRIVER_NAME, sizeof(card->driver));
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if (quirk && quirk->device_name)
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strlcpy(card->shortname, quirk->device_name, sizeof(card->shortname));
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else
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strlcpy(card->shortname, "M2Tech generic audio", sizeof(card->shortname));
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strlcat(card->longname, card->shortname, sizeof(card->longname));
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len = strlcat(card->longname, " at ", sizeof(card->longname));
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if (len < sizeof(card->longname))
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usb_make_path(device, card->longname + len,
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sizeof(card->longname) - len);
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chip = card->private_data;
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chip->dev = device;
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chip->card = card;
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*rchip = chip;
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return 0;
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}
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static int hiface_chip_probe(struct usb_interface *intf,
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const struct usb_device_id *usb_id)
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{
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const struct hiface_vendor_quirk *quirk = (struct hiface_vendor_quirk *)usb_id->driver_info;
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int ret;
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int i;
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struct hiface_chip *chip;
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struct usb_device *device = interface_to_usbdev(intf);
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ret = usb_set_interface(device, 0, 0);
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if (ret != 0) {
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dev_err(&device->dev, "can't set first interface for " CARD_NAME " device.\n");
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return -EIO;
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}
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/* check whether the card is already registered */
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chip = NULL;
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mutex_lock(®ister_mutex);
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for (i = 0; i < SNDRV_CARDS; i++)
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if (enable[i])
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break;
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if (i >= SNDRV_CARDS) {
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dev_err(&device->dev, "no available " CARD_NAME " audio device\n");
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ret = -ENODEV;
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goto err;
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}
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ret = hiface_chip_create(device, i, quirk, &chip);
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if (ret < 0)
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goto err;
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snd_card_set_dev(chip->card, &intf->dev);
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ret = hiface_pcm_init(chip, quirk ? quirk->extra_freq : 0);
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if (ret < 0)
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goto err_chip_destroy;
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ret = snd_card_register(chip->card);
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if (ret < 0) {
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dev_err(&device->dev, "cannot register " CARD_NAME " card\n");
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goto err_chip_destroy;
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}
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mutex_unlock(®ister_mutex);
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usb_set_intfdata(intf, chip);
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return 0;
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err_chip_destroy:
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snd_card_free(chip->card);
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err:
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mutex_unlock(®ister_mutex);
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return ret;
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}
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static void hiface_chip_disconnect(struct usb_interface *intf)
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{
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struct hiface_chip *chip;
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struct snd_card *card;
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chip = usb_get_intfdata(intf);
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if (!chip)
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return;
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card = chip->card;
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/* Make sure that the userspace cannot create new request */
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snd_card_disconnect(card);
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hiface_pcm_abort(chip);
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snd_card_free_when_closed(card);
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}
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static const struct usb_device_id device_table[] = {
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{
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USB_DEVICE(0x04b4, 0x0384),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Young",
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.extra_freq = 1,
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}
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},
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{
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USB_DEVICE(0x04b4, 0x930b),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "hiFace",
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}
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},
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{
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USB_DEVICE(0x04b4, 0x931b),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "North Star",
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}
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},
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{
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USB_DEVICE(0x04b4, 0x931c),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "W4S Young",
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}
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},
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{
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USB_DEVICE(0x04b4, 0x931d),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Corrson",
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}
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},
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{
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USB_DEVICE(0x04b4, 0x931e),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "AUDIA",
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}
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},
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{
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USB_DEVICE(0x04b4, 0x931f),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "SL Audio",
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}
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},
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{
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USB_DEVICE(0x04b4, 0x9320),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Empirical",
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}
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},
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{
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USB_DEVICE(0x04b4, 0x9321),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Rockna",
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}
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},
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{
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USB_DEVICE(0x249c, 0x9001),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Pathos",
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}
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},
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{
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USB_DEVICE(0x249c, 0x9002),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Metronome",
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}
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},
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{
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USB_DEVICE(0x249c, 0x9006),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "CAD",
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}
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},
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{
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USB_DEVICE(0x249c, 0x9008),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Audio Esclusive",
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}
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},
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{
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USB_DEVICE(0x249c, 0x931c),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Rotel",
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}
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},
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{
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USB_DEVICE(0x249c, 0x932c),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Eeaudio",
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}
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},
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{
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USB_DEVICE(0x245f, 0x931c),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "CHORD",
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}
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},
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{
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USB_DEVICE(0x25c6, 0x9002),
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.driver_info = (unsigned long)&(const struct hiface_vendor_quirk) {
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.device_name = "Vitus",
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}
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},
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{}
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};
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MODULE_DEVICE_TABLE(usb, device_table);
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static struct usb_driver hiface_usb_driver = {
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.name = DRIVER_NAME,
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.probe = hiface_chip_probe,
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.disconnect = hiface_chip_disconnect,
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.id_table = device_table,
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};
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module_usb_driver(hiface_usb_driver);
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30
sound/usb/hiface/chip.h
Normal file
30
sound/usb/hiface/chip.h
Normal file
@ -0,0 +1,30 @@
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/*
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* Linux driver for M2Tech hiFace compatible devices
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*
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* Copyright 2012-2013 (C) M2TECH S.r.l and Amarula Solutions B.V.
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*
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* Authors: Michael Trimarchi <michael@amarulasolutions.com>
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* Antonio Ospite <ao2@amarulasolutions.com>
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*
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* The driver is based on the work done in TerraTec DMX 6Fire USB
|
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*
|
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* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* 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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#ifndef HIFACE_CHIP_H
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#define HIFACE_CHIP_H
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#include <linux/usb.h>
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#include <sound/core.h>
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struct pcm_runtime;
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struct hiface_chip {
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struct usb_device *dev;
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struct snd_card *card;
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struct pcm_runtime *pcm;
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};
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#endif /* HIFACE_CHIP_H */
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621
sound/usb/hiface/pcm.c
Normal file
621
sound/usb/hiface/pcm.c
Normal file
@ -0,0 +1,621 @@
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/*
|
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* Linux driver for M2Tech hiFace compatible devices
|
||||
*
|
||||
* Copyright 2012-2013 (C) M2TECH S.r.l and Amarula Solutions B.V.
|
||||
*
|
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* Authors: Michael Trimarchi <michael@amarulasolutions.com>
|
||||
* Antonio Ospite <ao2@amarulasolutions.com>
|
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*
|
||||
* The driver is based on the work done in TerraTec DMX 6Fire USB
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*/
|
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|
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#include <linux/slab.h>
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#include <sound/pcm.h>
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#include "pcm.h"
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#include "chip.h"
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#define OUT_EP 0x2
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#define PCM_N_URBS 8
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#define PCM_PACKET_SIZE 4096
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#define PCM_BUFFER_SIZE (2 * PCM_N_URBS * PCM_PACKET_SIZE)
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|
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struct pcm_urb {
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struct hiface_chip *chip;
|
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|
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struct urb instance;
|
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struct usb_anchor submitted;
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u8 *buffer;
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};
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struct pcm_substream {
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spinlock_t lock;
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struct snd_pcm_substream *instance;
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bool active;
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snd_pcm_uframes_t dma_off; /* current position in alsa dma_area */
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snd_pcm_uframes_t period_off; /* current position in current period */
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};
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enum { /* pcm streaming states */
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STREAM_DISABLED, /* no pcm streaming */
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STREAM_STARTING, /* pcm streaming requested, waiting to become ready */
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STREAM_RUNNING, /* pcm streaming running */
|
||||
STREAM_STOPPING
|
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};
|
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|
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struct pcm_runtime {
|
||||
struct hiface_chip *chip;
|
||||
struct snd_pcm *instance;
|
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|
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struct pcm_substream playback;
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bool panic; /* if set driver won't do anymore pcm on device */
|
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|
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struct pcm_urb out_urbs[PCM_N_URBS];
|
||||
|
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struct mutex stream_mutex;
|
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u8 stream_state; /* one of STREAM_XXX */
|
||||
u8 extra_freq;
|
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wait_queue_head_t stream_wait_queue;
|
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bool stream_wait_cond;
|
||||
};
|
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|
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static const unsigned int rates[] = { 44100, 48000, 88200, 96000, 176400, 192000,
|
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352800, 384000 };
|
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static const struct snd_pcm_hw_constraint_list constraints_extra_rates = {
|
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.count = ARRAY_SIZE(rates),
|
||||
.list = rates,
|
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.mask = 0,
|
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};
|
||||
|
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static const struct snd_pcm_hardware pcm_hw = {
|
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.info = SNDRV_PCM_INFO_MMAP |
|
||||
SNDRV_PCM_INFO_INTERLEAVED |
|
||||
SNDRV_PCM_INFO_BLOCK_TRANSFER |
|
||||
SNDRV_PCM_INFO_PAUSE |
|
||||
SNDRV_PCM_INFO_MMAP_VALID |
|
||||
SNDRV_PCM_INFO_BATCH,
|
||||
|
||||
.formats = SNDRV_PCM_FMTBIT_S32_LE,
|
||||
|
||||
.rates = SNDRV_PCM_RATE_44100 |
|
||||
SNDRV_PCM_RATE_48000 |
|
||||
SNDRV_PCM_RATE_88200 |
|
||||
SNDRV_PCM_RATE_96000 |
|
||||
SNDRV_PCM_RATE_176400 |
|
||||
SNDRV_PCM_RATE_192000,
|
||||
|
||||
.rate_min = 44100,
|
||||
.rate_max = 192000, /* changes in hiface_pcm_open to support extra rates */
|
||||
.channels_min = 2,
|
||||
.channels_max = 2,
|
||||
.buffer_bytes_max = PCM_BUFFER_SIZE,
|
||||
.period_bytes_min = PCM_PACKET_SIZE,
|
||||
.period_bytes_max = PCM_BUFFER_SIZE,
|
||||
.periods_min = 2,
|
||||
.periods_max = 1024
|
||||
};
|
||||
|
||||
/* message values used to change the sample rate */
|
||||
#define HIFACE_SET_RATE_REQUEST 0xb0
|
||||
|
||||
#define HIFACE_RATE_44100 0x43
|
||||
#define HIFACE_RATE_48000 0x4b
|
||||
#define HIFACE_RATE_88200 0x42
|
||||
#define HIFACE_RATE_96000 0x4a
|
||||
#define HIFACE_RATE_176400 0x40
|
||||
#define HIFACE_RATE_192000 0x48
|
||||
#define HIFACE_RATE_352000 0x58
|
||||
#define HIFACE_RATE_384000 0x68
|
||||
|
||||
static int hiface_pcm_set_rate(struct pcm_runtime *rt, unsigned int rate)
|
||||
{
|
||||
struct usb_device *device = rt->chip->dev;
|
||||
u16 rate_value;
|
||||
int ret;
|
||||
|
||||
/* We are already sure that the rate is supported here thanks to
|
||||
* ALSA constraints
|
||||
*/
|
||||
switch (rate) {
|
||||
case 44100:
|
||||
rate_value = HIFACE_RATE_44100;
|
||||
break;
|
||||
case 48000:
|
||||
rate_value = HIFACE_RATE_48000;
|
||||
break;
|
||||
case 88200:
|
||||
rate_value = HIFACE_RATE_88200;
|
||||
break;
|
||||
case 96000:
|
||||
rate_value = HIFACE_RATE_96000;
|
||||
break;
|
||||
case 176400:
|
||||
rate_value = HIFACE_RATE_176400;
|
||||
break;
|
||||
case 192000:
|
||||
rate_value = HIFACE_RATE_192000;
|
||||
break;
|
||||
case 352000:
|
||||
rate_value = HIFACE_RATE_352000;
|
||||
break;
|
||||
case 384000:
|
||||
rate_value = HIFACE_RATE_384000;
|
||||
break;
|
||||
default:
|
||||
dev_err(&device->dev, "Unsupported rate %d\n", rate);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
/*
|
||||
* USBIO: Vendor 0xb0(wValue=0x0043, wIndex=0x0000)
|
||||
* 43 b0 43 00 00 00 00 00
|
||||
* USBIO: Vendor 0xb0(wValue=0x004b, wIndex=0x0000)
|
||||
* 43 b0 4b 00 00 00 00 00
|
||||
* This control message doesn't have any ack from the
|
||||
* other side
|
||||
*/
|
||||
ret = usb_control_msg(device, usb_sndctrlpipe(device, 0),
|
||||
HIFACE_SET_RATE_REQUEST,
|
||||
USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_OTHER,
|
||||
rate_value, 0, NULL, 0, 100);
|
||||
if (ret < 0) {
|
||||
dev_err(&device->dev, "Error setting samplerate %d.\n", rate);
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct pcm_substream *hiface_pcm_get_substream(struct snd_pcm_substream
|
||||
*alsa_sub)
|
||||
{
|
||||
struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
|
||||
struct device *device = &rt->chip->dev->dev;
|
||||
|
||||
if (alsa_sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||||
return &rt->playback;
|
||||
|
||||
dev_err(device, "Error getting pcm substream slot.\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* call with stream_mutex locked */
|
||||
static void hiface_pcm_stream_stop(struct pcm_runtime *rt)
|
||||
{
|
||||
int i, time;
|
||||
|
||||
if (rt->stream_state != STREAM_DISABLED) {
|
||||
rt->stream_state = STREAM_STOPPING;
|
||||
|
||||
for (i = 0; i < PCM_N_URBS; i++) {
|
||||
time = usb_wait_anchor_empty_timeout(
|
||||
&rt->out_urbs[i].submitted, 100);
|
||||
if (!time)
|
||||
usb_kill_anchored_urbs(
|
||||
&rt->out_urbs[i].submitted);
|
||||
usb_kill_urb(&rt->out_urbs[i].instance);
|
||||
}
|
||||
|
||||
rt->stream_state = STREAM_DISABLED;
|
||||
}
|
||||
}
|
||||
|
||||
/* call with stream_mutex locked */
|
||||
static int hiface_pcm_stream_start(struct pcm_runtime *rt)
|
||||
{
|
||||
int ret = 0;
|
||||
int i;
|
||||
|
||||
if (rt->stream_state == STREAM_DISABLED) {
|
||||
|
||||
/* reset panic state when starting a new stream */
|
||||
rt->panic = false;
|
||||
|
||||
/* submit our out urbs zero init */
|
||||
rt->stream_state = STREAM_STARTING;
|
||||
for (i = 0; i < PCM_N_URBS; i++) {
|
||||
memset(rt->out_urbs[i].buffer, 0, PCM_PACKET_SIZE);
|
||||
usb_anchor_urb(&rt->out_urbs[i].instance,
|
||||
&rt->out_urbs[i].submitted);
|
||||
ret = usb_submit_urb(&rt->out_urbs[i].instance,
|
||||
GFP_ATOMIC);
|
||||
if (ret) {
|
||||
hiface_pcm_stream_stop(rt);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
/* wait for first out urb to return (sent in in urb handler) */
|
||||
wait_event_timeout(rt->stream_wait_queue, rt->stream_wait_cond,
|
||||
HZ);
|
||||
if (rt->stream_wait_cond) {
|
||||
struct device *device = &rt->chip->dev->dev;
|
||||
dev_dbg(device, "%s: Stream is running wakeup event\n",
|
||||
__func__);
|
||||
rt->stream_state = STREAM_RUNNING;
|
||||
} else {
|
||||
hiface_pcm_stream_stop(rt);
|
||||
return -EIO;
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* The hardware wants word-swapped 32-bit values */
|
||||
static void memcpy_swahw32(u8 *dest, u8 *src, unsigned int n)
|
||||
{
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < n / 4; i++)
|
||||
((u32 *)dest)[i] = swahw32(((u32 *)src)[i]);
|
||||
}
|
||||
|
||||
/* call with substream locked */
|
||||
/* returns true if a period elapsed */
|
||||
static bool hiface_pcm_playback(struct pcm_substream *sub, struct pcm_urb *urb)
|
||||
{
|
||||
struct snd_pcm_runtime *alsa_rt = sub->instance->runtime;
|
||||
struct device *device = &urb->chip->dev->dev;
|
||||
u8 *source;
|
||||
unsigned int pcm_buffer_size;
|
||||
|
||||
WARN_ON(alsa_rt->format != SNDRV_PCM_FORMAT_S32_LE);
|
||||
|
||||
pcm_buffer_size = snd_pcm_lib_buffer_bytes(sub->instance);
|
||||
|
||||
if (sub->dma_off + PCM_PACKET_SIZE <= pcm_buffer_size) {
|
||||
dev_dbg(device, "%s: (1) buffer_size %#x dma_offset %#x\n", __func__,
|
||||
(unsigned int) pcm_buffer_size,
|
||||
(unsigned int) sub->dma_off);
|
||||
|
||||
source = alsa_rt->dma_area + sub->dma_off;
|
||||
memcpy_swahw32(urb->buffer, source, PCM_PACKET_SIZE);
|
||||
} else {
|
||||
/* wrap around at end of ring buffer */
|
||||
unsigned int len;
|
||||
|
||||
dev_dbg(device, "%s: (2) buffer_size %#x dma_offset %#x\n", __func__,
|
||||
(unsigned int) pcm_buffer_size,
|
||||
(unsigned int) sub->dma_off);
|
||||
|
||||
len = pcm_buffer_size - sub->dma_off;
|
||||
|
||||
source = alsa_rt->dma_area + sub->dma_off;
|
||||
memcpy_swahw32(urb->buffer, source, len);
|
||||
|
||||
source = alsa_rt->dma_area;
|
||||
memcpy_swahw32(urb->buffer + len, source,
|
||||
PCM_PACKET_SIZE - len);
|
||||
}
|
||||
sub->dma_off += PCM_PACKET_SIZE;
|
||||
if (sub->dma_off >= pcm_buffer_size)
|
||||
sub->dma_off -= pcm_buffer_size;
|
||||
|
||||
sub->period_off += PCM_PACKET_SIZE;
|
||||
if (sub->period_off >= alsa_rt->period_size) {
|
||||
sub->period_off %= alsa_rt->period_size;
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
static void hiface_pcm_out_urb_handler(struct urb *usb_urb)
|
||||
{
|
||||
struct pcm_urb *out_urb = usb_urb->context;
|
||||
struct pcm_runtime *rt = out_urb->chip->pcm;
|
||||
struct pcm_substream *sub;
|
||||
bool do_period_elapsed = false;
|
||||
unsigned long flags;
|
||||
int ret;
|
||||
|
||||
if (rt->panic || rt->stream_state == STREAM_STOPPING)
|
||||
return;
|
||||
|
||||
if (unlikely(usb_urb->status == -ENOENT || /* unlinked */
|
||||
usb_urb->status == -ENODEV || /* device removed */
|
||||
usb_urb->status == -ECONNRESET || /* unlinked */
|
||||
usb_urb->status == -ESHUTDOWN)) { /* device disabled */
|
||||
goto out_fail;
|
||||
}
|
||||
|
||||
if (rt->stream_state == STREAM_STARTING) {
|
||||
rt->stream_wait_cond = true;
|
||||
wake_up(&rt->stream_wait_queue);
|
||||
}
|
||||
|
||||
/* now send our playback data (if a free out urb was found) */
|
||||
sub = &rt->playback;
|
||||
spin_lock_irqsave(&sub->lock, flags);
|
||||
if (sub->active)
|
||||
do_period_elapsed = hiface_pcm_playback(sub, out_urb);
|
||||
else
|
||||
memset(out_urb->buffer, 0, PCM_PACKET_SIZE);
|
||||
|
||||
spin_unlock_irqrestore(&sub->lock, flags);
|
||||
|
||||
if (do_period_elapsed)
|
||||
snd_pcm_period_elapsed(sub->instance);
|
||||
|
||||
ret = usb_submit_urb(&out_urb->instance, GFP_ATOMIC);
|
||||
if (ret < 0)
|
||||
goto out_fail;
|
||||
|
||||
return;
|
||||
|
||||
out_fail:
|
||||
rt->panic = true;
|
||||
}
|
||||
|
||||
static int hiface_pcm_open(struct snd_pcm_substream *alsa_sub)
|
||||
{
|
||||
struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
|
||||
struct pcm_substream *sub = NULL;
|
||||
struct snd_pcm_runtime *alsa_rt = alsa_sub->runtime;
|
||||
int ret;
|
||||
|
||||
if (rt->panic)
|
||||
return -EPIPE;
|
||||
|
||||
mutex_lock(&rt->stream_mutex);
|
||||
alsa_rt->hw = pcm_hw;
|
||||
|
||||
if (alsa_sub->stream == SNDRV_PCM_STREAM_PLAYBACK)
|
||||
sub = &rt->playback;
|
||||
|
||||
if (!sub) {
|
||||
struct device *device = &rt->chip->dev->dev;
|
||||
mutex_unlock(&rt->stream_mutex);
|
||||
dev_err(device, "Invalid stream type\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (rt->extra_freq) {
|
||||
alsa_rt->hw.rates |= SNDRV_PCM_RATE_KNOT;
|
||||
alsa_rt->hw.rate_max = 384000;
|
||||
|
||||
/* explicit constraints needed as we added SNDRV_PCM_RATE_KNOT */
|
||||
ret = snd_pcm_hw_constraint_list(alsa_sub->runtime, 0,
|
||||
SNDRV_PCM_HW_PARAM_RATE,
|
||||
&constraints_extra_rates);
|
||||
if (ret < 0) {
|
||||
mutex_unlock(&rt->stream_mutex);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
|
||||
sub->instance = alsa_sub;
|
||||
sub->active = false;
|
||||
mutex_unlock(&rt->stream_mutex);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hiface_pcm_close(struct snd_pcm_substream *alsa_sub)
|
||||
{
|
||||
struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
|
||||
struct pcm_substream *sub = hiface_pcm_get_substream(alsa_sub);
|
||||
unsigned long flags;
|
||||
|
||||
if (rt->panic)
|
||||
return 0;
|
||||
|
||||
mutex_lock(&rt->stream_mutex);
|
||||
if (sub) {
|
||||
hiface_pcm_stream_stop(rt);
|
||||
|
||||
/* deactivate substream */
|
||||
spin_lock_irqsave(&sub->lock, flags);
|
||||
sub->instance = NULL;
|
||||
sub->active = false;
|
||||
spin_unlock_irqrestore(&sub->lock, flags);
|
||||
|
||||
}
|
||||
mutex_unlock(&rt->stream_mutex);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hiface_pcm_hw_params(struct snd_pcm_substream *alsa_sub,
|
||||
struct snd_pcm_hw_params *hw_params)
|
||||
{
|
||||
return snd_pcm_lib_alloc_vmalloc_buffer(alsa_sub,
|
||||
params_buffer_bytes(hw_params));
|
||||
}
|
||||
|
||||
static int hiface_pcm_hw_free(struct snd_pcm_substream *alsa_sub)
|
||||
{
|
||||
return snd_pcm_lib_free_vmalloc_buffer(alsa_sub);
|
||||
}
|
||||
|
||||
static int hiface_pcm_prepare(struct snd_pcm_substream *alsa_sub)
|
||||
{
|
||||
struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
|
||||
struct pcm_substream *sub = hiface_pcm_get_substream(alsa_sub);
|
||||
struct snd_pcm_runtime *alsa_rt = alsa_sub->runtime;
|
||||
int ret;
|
||||
|
||||
if (rt->panic)
|
||||
return -EPIPE;
|
||||
if (!sub)
|
||||
return -ENODEV;
|
||||
|
||||
mutex_lock(&rt->stream_mutex);
|
||||
|
||||
sub->dma_off = 0;
|
||||
sub->period_off = 0;
|
||||
|
||||
if (rt->stream_state == STREAM_DISABLED) {
|
||||
|
||||
ret = hiface_pcm_set_rate(rt, alsa_rt->rate);
|
||||
if (ret) {
|
||||
mutex_unlock(&rt->stream_mutex);
|
||||
return ret;
|
||||
}
|
||||
ret = hiface_pcm_stream_start(rt);
|
||||
if (ret) {
|
||||
mutex_unlock(&rt->stream_mutex);
|
||||
return ret;
|
||||
}
|
||||
}
|
||||
mutex_unlock(&rt->stream_mutex);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int hiface_pcm_trigger(struct snd_pcm_substream *alsa_sub, int cmd)
|
||||
{
|
||||
struct pcm_substream *sub = hiface_pcm_get_substream(alsa_sub);
|
||||
struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
|
||||
|
||||
if (rt->panic)
|
||||
return -EPIPE;
|
||||
if (!sub)
|
||||
return -ENODEV;
|
||||
|
||||
switch (cmd) {
|
||||
case SNDRV_PCM_TRIGGER_START:
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
||||
spin_lock_irq(&sub->lock);
|
||||
sub->active = true;
|
||||
spin_unlock_irq(&sub->lock);
|
||||
return 0;
|
||||
|
||||
case SNDRV_PCM_TRIGGER_STOP:
|
||||
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
||||
spin_lock_irq(&sub->lock);
|
||||
sub->active = false;
|
||||
spin_unlock_irq(&sub->lock);
|
||||
return 0;
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static snd_pcm_uframes_t hiface_pcm_pointer(struct snd_pcm_substream *alsa_sub)
|
||||
{
|
||||
struct pcm_substream *sub = hiface_pcm_get_substream(alsa_sub);
|
||||
struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
|
||||
unsigned long flags;
|
||||
snd_pcm_uframes_t dma_offset;
|
||||
|
||||
if (rt->panic || !sub)
|
||||
return SNDRV_PCM_STATE_XRUN;
|
||||
|
||||
spin_lock_irqsave(&sub->lock, flags);
|
||||
dma_offset = sub->dma_off;
|
||||
spin_unlock_irqrestore(&sub->lock, flags);
|
||||
return bytes_to_frames(alsa_sub->runtime, dma_offset);
|
||||
}
|
||||
|
||||
static struct snd_pcm_ops pcm_ops = {
|
||||
.open = hiface_pcm_open,
|
||||
.close = hiface_pcm_close,
|
||||
.ioctl = snd_pcm_lib_ioctl,
|
||||
.hw_params = hiface_pcm_hw_params,
|
||||
.hw_free = hiface_pcm_hw_free,
|
||||
.prepare = hiface_pcm_prepare,
|
||||
.trigger = hiface_pcm_trigger,
|
||||
.pointer = hiface_pcm_pointer,
|
||||
.page = snd_pcm_lib_get_vmalloc_page,
|
||||
.mmap = snd_pcm_lib_mmap_vmalloc,
|
||||
};
|
||||
|
||||
static int hiface_pcm_init_urb(struct pcm_urb *urb,
|
||||
struct hiface_chip *chip,
|
||||
unsigned int ep,
|
||||
void (*handler)(struct urb *))
|
||||
{
|
||||
urb->chip = chip;
|
||||
usb_init_urb(&urb->instance);
|
||||
|
||||
urb->buffer = kzalloc(PCM_PACKET_SIZE, GFP_KERNEL);
|
||||
if (!urb->buffer)
|
||||
return -ENOMEM;
|
||||
|
||||
usb_fill_bulk_urb(&urb->instance, chip->dev,
|
||||
usb_sndbulkpipe(chip->dev, ep), (void *)urb->buffer,
|
||||
PCM_PACKET_SIZE, handler, urb);
|
||||
init_usb_anchor(&urb->submitted);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
void hiface_pcm_abort(struct hiface_chip *chip)
|
||||
{
|
||||
struct pcm_runtime *rt = chip->pcm;
|
||||
|
||||
if (rt) {
|
||||
rt->panic = true;
|
||||
|
||||
mutex_lock(&rt->stream_mutex);
|
||||
hiface_pcm_stream_stop(rt);
|
||||
mutex_unlock(&rt->stream_mutex);
|
||||
}
|
||||
}
|
||||
|
||||
static void hiface_pcm_destroy(struct hiface_chip *chip)
|
||||
{
|
||||
struct pcm_runtime *rt = chip->pcm;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < PCM_N_URBS; i++)
|
||||
kfree(rt->out_urbs[i].buffer);
|
||||
|
||||
kfree(chip->pcm);
|
||||
chip->pcm = NULL;
|
||||
}
|
||||
|
||||
static void hiface_pcm_free(struct snd_pcm *pcm)
|
||||
{
|
||||
struct pcm_runtime *rt = pcm->private_data;
|
||||
|
||||
if (rt)
|
||||
hiface_pcm_destroy(rt->chip);
|
||||
}
|
||||
|
||||
int hiface_pcm_init(struct hiface_chip *chip, u8 extra_freq)
|
||||
{
|
||||
int i;
|
||||
int ret;
|
||||
struct snd_pcm *pcm;
|
||||
struct pcm_runtime *rt;
|
||||
|
||||
rt = kzalloc(sizeof(*rt), GFP_KERNEL);
|
||||
if (!rt)
|
||||
return -ENOMEM;
|
||||
|
||||
rt->chip = chip;
|
||||
rt->stream_state = STREAM_DISABLED;
|
||||
if (extra_freq)
|
||||
rt->extra_freq = 1;
|
||||
|
||||
init_waitqueue_head(&rt->stream_wait_queue);
|
||||
mutex_init(&rt->stream_mutex);
|
||||
spin_lock_init(&rt->playback.lock);
|
||||
|
||||
for (i = 0; i < PCM_N_URBS; i++)
|
||||
hiface_pcm_init_urb(&rt->out_urbs[i], chip, OUT_EP,
|
||||
hiface_pcm_out_urb_handler);
|
||||
|
||||
ret = snd_pcm_new(chip->card, "USB-SPDIF Audio", 0, 1, 0, &pcm);
|
||||
if (ret < 0) {
|
||||
kfree(rt);
|
||||
dev_err(&chip->dev->dev, "Cannot create pcm instance\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
pcm->private_data = rt;
|
||||
pcm->private_free = hiface_pcm_free;
|
||||
|
||||
strlcpy(pcm->name, "USB-SPDIF Audio", sizeof(pcm->name));
|
||||
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &pcm_ops);
|
||||
|
||||
rt->instance = pcm;
|
||||
|
||||
chip->pcm = rt;
|
||||
return 0;
|
||||
}
|
||||
24
sound/usb/hiface/pcm.h
Normal file
24
sound/usb/hiface/pcm.h
Normal file
@ -0,0 +1,24 @@
|
||||
/*
|
||||
* Linux driver for M2Tech hiFace compatible devices
|
||||
*
|
||||
* Copyright 2012-2013 (C) M2TECH S.r.l and Amarula Solutions B.V.
|
||||
*
|
||||
* Authors: Michael Trimarchi <michael@amarulasolutions.com>
|
||||
* Antonio Ospite <ao2@amarulasolutions.com>
|
||||
*
|
||||
* The driver is based on the work done in TerraTec DMX 6Fire USB
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*/
|
||||
|
||||
#ifndef HIFACE_PCM_H
|
||||
#define HIFACE_PCM_H
|
||||
|
||||
struct hiface_chip;
|
||||
|
||||
int hiface_pcm_init(struct hiface_chip *chip, u8 extra_freq);
|
||||
void hiface_pcm_abort(struct hiface_chip *chip);
|
||||
#endif /* HIFACE_PCM_H */
|
||||
Loading…
Reference in New Issue
Block a user