/*
 * Linux driver for TerraTec DMX 6Fire USB
 *
 * Main routines and module definitions.
 *
 * Author:	Torsten Schenk <torsten.schenk@zoho.com>
 * Created:	Jan 01, 2011
 * Copyright:	(C) Torsten Schenk
 *
 * 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.
 */

#include "chip.h"
#include "firmware.h"
#include "pcm.h"
#include "control.h"
#include "comm.h"
#include "midi.h"

#include <linux/moduleparam.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/gfp.h>
#include <sound/initval.h>

MODULE_AUTHOR("Torsten Schenk <torsten.schenk@zoho.com>");
MODULE_DESCRIPTION("TerraTec DMX 6Fire USB audio driver");
MODULE_LICENSE("GPL v2");
MODULE_SUPPORTED_DEVICE("{{TerraTec,DMX 6Fire USB}}");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-max */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* Id for card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable card */
static struct sfire_chip *chips[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;
static struct usb_device *devices[SNDRV_CARDS] = SNDRV_DEFAULT_PTR;

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for the 6fire sound device");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for the 6fire sound device.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable the 6fire sound device.");

static DEFINE_MUTEX(register_mutex);

static void usb6fire_chip_abort(struct sfire_chip *chip)
{
	if (chip) {
		if (chip->pcm)
			usb6fire_pcm_abort(chip);
		if (chip->midi)
			usb6fire_midi_abort(chip);
		if (chip->comm)
			usb6fire_comm_abort(chip);
		if (chip->control)
			usb6fire_control_abort(chip);
		if (chip->card) {
			snd_card_disconnect(chip->card);
			snd_card_free_when_closed(chip->card);
			chip->card = NULL;
		}
	}
}

static void usb6fire_chip_destroy(struct sfire_chip *chip)
{
	if (chip) {
		if (chip->pcm)
			usb6fire_pcm_destroy(chip);
		if (chip->midi)
			usb6fire_midi_destroy(chip);
		if (chip->comm)
			usb6fire_comm_destroy(chip);
		if (chip->control)
			usb6fire_control_destroy(chip);
		if (chip->card)
			snd_card_free(chip->card);
	}
}

static int usb6fire_chip_probe(struct usb_interface *intf,
			       const struct usb_device_id *usb_id)
{
	int ret;
	int i;
	struct sfire_chip *chip = NULL;
	struct usb_device *device = interface_to_usbdev(intf);
	int regidx = -1; /* index in module parameter array */
	struct snd_card *card = NULL;

	/* look if we already serve this card and return if so */
	mutex_lock(&register_mutex);
	for (i = 0; i < SNDRV_CARDS; i++) {
		if (devices[i] == device) {
			if (chips[i])
				chips[i]->intf_count++;
			usb_set_intfdata(intf, chips[i]);
			mutex_unlock(&register_mutex);
			return 0;
		} else if (!devices[i] && regidx < 0)
			regidx = i;
	}
	if (regidx < 0) {
		mutex_unlock(&register_mutex);
		dev_err(&intf->dev, "too many cards registered.\n");
		return -ENODEV;
	}
	devices[regidx] = device;
	mutex_unlock(&register_mutex);

	/* check, if firmware is present on device, upload it if not */
	ret = usb6fire_fw_init(intf);
	if (ret < 0)
		return ret;
	else if (ret == FW_NOT_READY) /* firmware update performed */
		return 0;

	/* if we are here, card can be registered in alsa. */
	if (usb_set_interface(device, 0, 0) != 0) {
		dev_err(&intf->dev, "can't set first interface.\n");
		return -EIO;
	}
	ret = snd_card_new(&intf->dev, index[regidx], id[regidx],
			   THIS_MODULE, sizeof(struct sfire_chip), &card);
	if (ret < 0) {
		dev_err(&intf->dev, "cannot create alsa card.\n");
		return ret;
	}
	strcpy(card->driver, "6FireUSB");
	strcpy(card->shortname, "TerraTec DMX6FireUSB");
	sprintf(card->longname, "%s at %d:%d", card->shortname,
			device->bus->busnum, device->devnum);

	chip = card->private_data;
	chips[regidx] = chip;
	chip->dev = device;
	chip->regidx = regidx;
	chip->intf_count = 1;
	chip->card = card;

	ret = usb6fire_comm_init(chip);
	if (ret < 0) {
		usb6fire_chip_destroy(chip);
		return ret;
	}

	ret = usb6fire_midi_init(chip);
	if (ret < 0) {
		usb6fire_chip_destroy(chip);
		return ret;
	}

	ret = usb6fire_pcm_init(chip);
	if (ret < 0) {
		usb6fire_chip_destroy(chip);
		return ret;
	}

	ret = usb6fire_control_init(chip);
	if (ret < 0) {
		usb6fire_chip_destroy(chip);
		return ret;
	}

	ret = snd_card_register(card);
	if (ret < 0) {
		dev_err(&intf->dev, "cannot register card.");
		usb6fire_chip_destroy(chip);
		return ret;
	}
	usb_set_intfdata(intf, chip);
	return 0;
}

static void usb6fire_chip_disconnect(struct usb_interface *intf)
{
	struct sfire_chip *chip;
	struct snd_card *card;

	chip = usb_get_intfdata(intf);
	if (chip) { /* if !chip, fw upload has been performed */
		card = chip->card;
		chip->intf_count--;
		if (!chip->intf_count) {
			mutex_lock(&register_mutex);
			devices[chip->regidx] = NULL;
			chips[chip->regidx] = NULL;
			mutex_unlock(&register_mutex);

			chip->shutdown = true;
			usb6fire_chip_abort(chip);
			usb6fire_chip_destroy(chip);
		}
	}
}

static struct usb_device_id device_table[] = {
	{
		.match_flags = USB_DEVICE_ID_MATCH_DEVICE,
		.idVendor = 0x0ccd,
		.idProduct = 0x0080
	},
	{}
};

MODULE_DEVICE_TABLE(usb, device_table);

static struct usb_driver usb_driver = {
	.name = "snd-usb-6fire",
	.probe = usb6fire_chip_probe,
	.disconnect = usb6fire_chip_disconnect,
	.id_table = device_table,
};

module_usb_driver(usb_driver);
'/cgit.cgi/linux/net-next.git/tree/?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>be6d0e1f37c38ed0a7dd5da2d4b1e93f0fb43101</a> /<a href='/cgit.cgi/linux/net-next.git/tree/sound/soc/intel/atom/sst-atom-controls.h?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>sound/soc/intel/atom/sst-atom-controls.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/sound/soc/intel/atom/sst-atom-controls.h?id=24c2503255d35c269b67162c397a1a1c1e02f6ce'>24c2503255d35c269b67162c397a1a1c1e02f6ce</a> (<a href='/cgit.cgi/linux/net-next.git/diff/sound/soc/intel/atom/sst-atom-controls.h?id=0becc0ae5b42828785b589f686725ff5bc3b9b25&amp;id2=24c2503255d35c269b67162c397a1a1c1e02f6ce'>diff</a>)</td></tr></table>
<div class='commit-subject'>x86/mce: Make timer handling more robust</div><div class='commit-msg'>Erik reported that on a preproduction hardware a CMCI storm triggers the
BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is
started by the CMCI logic before the MCE CPU hotplug callback starts the
timer with add_timer_on(). So the timer is already queued which triggers
the BUG.

Using add_timer_on() is pretty pointless in this code because the timer is
strictlty per CPU, initialized as pinned and all operations which arm the
timer happen on the CPU to which the timer belongs.

Simplify the whole machinery by using mod_timer() instead of add_timer_on()
which avoids the problem because mod_timer() can handle already queued
timers. Use __start_timer() everywhere so the earliest armed expiry time is
preserved.

Reported-by: Erik Veijola &lt;erik.veijola@intel.com&gt;
Tested-by: Borislav Petkov &lt;bp@alien8.de&gt;
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;
Reviewed-by: Borislav Petkov &lt;bp@alien8.de&gt;
Cc: Tony Luck &lt;tony.luck@intel.com&gt;
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos
Signed-off-by: Thomas Gleixner &lt;tglx@linutronix.de&gt;

</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=0becc0ae5b42828785b589f686725ff5bc3b9b25'>Diffstat</a> (limited to 'sound/soc/intel/atom/sst-atom-controls.h')</div><table summary='diffstat' class='diffstat'>