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Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlSOD20ACgkQMUfUDdst+ylLPACg2QrW1oHhdTMT9WI8jihlHVRM 53kAoLeteByQ3iVwWurwwseRPiWa8+MI =OVRS -----END PGP SIGNATURE----- Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
199 lines
5.5 KiB
C
199 lines
5.5 KiB
C
/*
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* Dummy soundcard for virtual rawmidi devices
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*
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* Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>
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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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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/*
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* VIRTUAL RAW MIDI DEVICE CARDS
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*
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* This dummy card contains up to 4 virtual rawmidi devices.
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* They are not real rawmidi devices but just associated with sequencer
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* clients, so that any input/output sources can be connected as a raw
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* MIDI device arbitrary.
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* Also, multiple access is allowed to a single rawmidi device.
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*
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* Typical usage is like following:
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* - Load snd-virmidi module.
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* # modprobe snd-virmidi index=2
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* Then, sequencer clients 72:0 to 75:0 will be created, which are
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* mapped from /dev/snd/midiC1D0 to /dev/snd/midiC1D3, respectively.
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*
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* - Connect input/output via aconnect.
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* % aconnect 64:0 72:0 # keyboard input redirection 64:0 -> 72:0
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* % aconnect 72:0 65:0 # output device redirection 72:0 -> 65:0
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*
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* - Run application using a midi device (eg. /dev/snd/midiC1D0)
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*/
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#include <linux/init.h>
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#include <linux/wait.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/module.h>
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#include <sound/core.h>
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#include <sound/seq_kernel.h>
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#include <sound/seq_virmidi.h>
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#include <sound/initval.h>
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/* hack: OSS defines midi_devs, so undefine it (versioned symbols) */
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#undef midi_devs
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MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
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MODULE_DESCRIPTION("Dummy soundcard for virtual rawmidi devices");
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{ALSA,Virtual rawmidi device}}");
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#define MAX_MIDI_DEVICES 4
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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 this card */
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static bool enable[SNDRV_CARDS] = {1, [1 ... (SNDRV_CARDS - 1)] = 0};
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static int midi_devs[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4};
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for virmidi soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for virmidi soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable this soundcard.");
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module_param_array(midi_devs, int, NULL, 0444);
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MODULE_PARM_DESC(midi_devs, "MIDI devices # (1-4)");
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struct snd_card_virmidi {
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struct snd_card *card;
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struct snd_rawmidi *midi[MAX_MIDI_DEVICES];
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};
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static struct platform_device *devices[SNDRV_CARDS];
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static int snd_virmidi_probe(struct platform_device *devptr)
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{
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struct snd_card *card;
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struct snd_card_virmidi *vmidi;
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int idx, err;
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int dev = devptr->id;
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err = snd_card_new(&devptr->dev, index[dev], id[dev], THIS_MODULE,
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sizeof(struct snd_card_virmidi), &card);
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if (err < 0)
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return err;
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vmidi = card->private_data;
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vmidi->card = card;
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if (midi_devs[dev] > MAX_MIDI_DEVICES) {
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snd_printk(KERN_WARNING
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"too much midi devices for virmidi %d: force to use %d\n",
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dev, MAX_MIDI_DEVICES);
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midi_devs[dev] = MAX_MIDI_DEVICES;
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}
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for (idx = 0; idx < midi_devs[dev]; idx++) {
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struct snd_rawmidi *rmidi;
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struct snd_virmidi_dev *rdev;
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err = snd_virmidi_new(card, idx, &rmidi);
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if (err < 0)
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goto __nodev;
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rdev = rmidi->private_data;
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vmidi->midi[idx] = rmidi;
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strcpy(rmidi->name, "Virtual Raw MIDI");
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rdev->seq_mode = SNDRV_VIRMIDI_SEQ_DISPATCH;
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}
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strcpy(card->driver, "VirMIDI");
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strcpy(card->shortname, "VirMIDI");
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sprintf(card->longname, "Virtual MIDI Card %i", dev + 1);
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err = snd_card_register(card);
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if (!err) {
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platform_set_drvdata(devptr, card);
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return 0;
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}
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__nodev:
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snd_card_free(card);
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return err;
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}
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static int snd_virmidi_remove(struct platform_device *devptr)
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{
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snd_card_free(platform_get_drvdata(devptr));
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return 0;
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}
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#define SND_VIRMIDI_DRIVER "snd_virmidi"
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static struct platform_driver snd_virmidi_driver = {
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.probe = snd_virmidi_probe,
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.remove = snd_virmidi_remove,
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.driver = {
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.name = SND_VIRMIDI_DRIVER,
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},
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};
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static void snd_virmidi_unregister_all(void)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(devices); ++i)
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platform_device_unregister(devices[i]);
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platform_driver_unregister(&snd_virmidi_driver);
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}
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static int __init alsa_card_virmidi_init(void)
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{
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int i, cards, err;
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err = platform_driver_register(&snd_virmidi_driver);
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if (err < 0)
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return err;
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cards = 0;
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for (i = 0; i < SNDRV_CARDS; i++) {
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struct platform_device *device;
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if (!enable[i])
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continue;
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device = platform_device_register_simple(SND_VIRMIDI_DRIVER,
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i, NULL, 0);
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if (IS_ERR(device))
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continue;
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if (!platform_get_drvdata(device)) {
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platform_device_unregister(device);
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continue;
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}
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devices[i] = device;
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cards++;
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}
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if (!cards) {
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#ifdef MODULE
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printk(KERN_ERR "Card-VirMIDI soundcard not found or device busy\n");
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#endif
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snd_virmidi_unregister_all();
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return -ENODEV;
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}
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return 0;
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}
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static void __exit alsa_card_virmidi_exit(void)
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{
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snd_virmidi_unregister_all();
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}
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module_init(alsa_card_virmidi_init)
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module_exit(alsa_card_virmidi_exit)
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