cregit-Linux how code gets into the kernel

Release 4.7 sound/firewire/oxfw/oxfw.c

/*
 * oxfw.c - a part of driver for OXFW970/971 based devices
 *
 * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
 * Licensed under the terms of the GNU General Public License, version 2.
 */

#include "oxfw.h"


#define OXFORD_FIRMWARE_ID_ADDRESS	(CSR_REGISTER_BASE + 0x50000)
/* 0x970?vvvv or 0x971?vvvv, where vvvv = firmware version */


#define OXFORD_HARDWARE_ID_ADDRESS	(CSR_REGISTER_BASE + 0x90020)

#define OXFORD_HARDWARE_ID_OXFW970	0x39443841

#define OXFORD_HARDWARE_ID_OXFW971	0x39373100


#define VENDOR_LOUD		0x000ff2

#define VENDOR_GRIFFIN		0x001292

#define VENDOR_BEHRINGER	0x001564

#define VENDOR_LACIE		0x00d04b

#define VENDOR_TASCAM		0x00022e

#define OUI_STANTON		0x001260


#define MODEL_SATELLITE		0x00200f


#define SPECIFIER_1394TA	0x00a02d

#define VERSION_AVC		0x010001

MODULE_DESCRIPTION("Oxford Semiconductor FW970/971 driver");
MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("snd-firewire-speakers");
MODULE_ALIAS("snd-scs1x");


struct compat_info {
	
const char *driver_name;
	
const char *vendor_name;
	
const char *model_name;
};


static bool detect_loud_models(struct fw_unit *unit) { const char *const models[] = { "Onyxi", "Onyx-i", "d.Pro", "Mackie Onyx Satellite", "Tapco LINK.firewire 4x6", "U.420"}; char model[32]; unsigned int i; int err; err = fw_csr_string(unit->directory, CSR_MODEL, model, sizeof(model)); if (err < 0) return false; for (i = 0; i < ARRAY_SIZE(models); i++) { if (strcmp(models[i], model) == 0) break; } return (i < ARRAY_SIZE(models)); }

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dan carpenterdan carpenter10.87%150.00%
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static int name_card(struct snd_oxfw *oxfw) { struct fw_device *fw_dev = fw_parent_device(oxfw->unit); const struct compat_info *info; char vendor[24]; char model[32]; const char *d, *v, *m; u32 firmware; int err; /* get vendor name from root directory */ err = fw_csr_string(fw_dev->config_rom + 5, CSR_VENDOR, vendor, sizeof(vendor)); if (err < 0) goto end; /* get model name from unit directory */ err = fw_csr_string(oxfw->unit->directory, CSR_MODEL, model, sizeof(model)); if (err < 0) goto end; err = snd_fw_transaction(oxfw->unit, TCODE_READ_QUADLET_REQUEST, OXFORD_FIRMWARE_ID_ADDRESS, &firmware, 4, 0); if (err < 0) goto end; be32_to_cpus(&firmware); /* to apply card definitions */ if (oxfw->entry->vendor_id == VENDOR_GRIFFIN || oxfw->entry->vendor_id == VENDOR_LACIE) { info = (const struct compat_info *)oxfw->entry->driver_data; d = info->driver_name; v = info->vendor_name; m = info->model_name; } else { d = "OXFW"; v = vendor; m = model; } strcpy(oxfw->card->driver, d); strcpy(oxfw->card->mixername, m); strcpy(oxfw->card->shortname, m); snprintf(oxfw->card->longname, sizeof(oxfw->card->longname), "%s %s (OXFW%x %04x), GUID %08x%08x at %s, S%d", v, m, firmware >> 20, firmware & 0xffff, fw_dev->config_rom[3], fw_dev->config_rom[4], dev_name(&oxfw->unit->device), 100 << fw_dev->max_speed); end: return err; }

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static void oxfw_free(struct snd_oxfw *oxfw) { unsigned int i; snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->rx_stream); if (oxfw->has_output) snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->tx_stream); fw_unit_put(oxfw->unit); for (i = 0; i < SND_OXFW_STREAM_FORMAT_ENTRIES; i++) { kfree(oxfw->tx_stream_formats[i]); kfree(oxfw->rx_stream_formats[i]); } kfree(oxfw->spec); mutex_destroy(&oxfw->mutex); }

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Total98100.00%8100.00%

/* * This module releases the FireWire unit data after all ALSA character devices * are released by applications. This is for releasing stream data or finishing * transactions safely. Thus at returning from .remove(), this module still keep * references for the unit. */
static void oxfw_card_free(struct snd_card *card) { oxfw_free(card->private_data); }

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static int detect_quirks(struct snd_oxfw *oxfw) { struct fw_device *fw_dev = fw_parent_device(oxfw->unit); struct fw_csr_iterator it; int key, val; int vendor, model; /* * Add ALSA control elements for two models to keep compatibility to * old firewire-speaker module. */ if (oxfw->entry->vendor_id == VENDOR_GRIFFIN) return snd_oxfw_add_spkr(oxfw, false); if (oxfw->entry->vendor_id == VENDOR_LACIE) return snd_oxfw_add_spkr(oxfw, true); /* * Stanton models supports asynchronous transactions for unique MIDI * messages. */ if (oxfw->entry->vendor_id == OUI_STANTON) { /* No physical MIDI ports. */ oxfw->midi_input_ports = 0; oxfw->midi_output_ports = 0; /* Output stream exists but no data channels are useful. */ oxfw->has_output = false; return snd_oxfw_scs1x_add(oxfw); } /* * TASCAM FireOne has physical control and requires a pair of additional * MIDI ports. */ if (oxfw->entry->vendor_id == VENDOR_TASCAM) { oxfw->midi_input_ports++; oxfw->midi_output_ports++; return 0; } /* Seek from Root Directory of Config ROM. */ vendor = model = 0; fw_csr_iterator_init(&it, fw_dev->config_rom + 5); while (fw_csr_iterator_next(&it, &key, &val)) { if (key == CSR_VENDOR) vendor = val; else if (key == CSR_MODEL) model = val; } /* * Mackie Onyx Satellite with base station has a quirk to report a wrong * value in 'dbs' field of CIP header against its format information. */ if (vendor == VENDOR_LOUD && model == MODEL_SATELLITE) oxfw->wrong_dbs = true; return 0; }

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static void do_registration(struct work_struct *work) { struct snd_oxfw *oxfw = container_of(work, struct snd_oxfw, dwork.work); int err; if (oxfw->registered) return; err = snd_card_new(&oxfw->unit->device, -1, NULL, THIS_MODULE, 0, &oxfw->card); if (err < 0) return; err = name_card(oxfw); if (err < 0) goto error; err = detect_quirks(oxfw); if (err < 0) goto error; err = snd_oxfw_stream_discover(oxfw); if (err < 0) goto error; err = snd_oxfw_stream_init_simplex(oxfw, &oxfw->rx_stream); if (err < 0) goto error; if (oxfw->has_output) { err = snd_oxfw_stream_init_simplex(oxfw, &oxfw->tx_stream); if (err < 0) goto error; } err = snd_oxfw_create_pcm(oxfw); if (err < 0) goto error; snd_oxfw_proc_init(oxfw); err = snd_oxfw_create_midi(oxfw); if (err < 0) goto error; err = snd_oxfw_create_hwdep(oxfw); if (err < 0) goto error; err = snd_card_register(oxfw->card); if (err < 0) goto error; /* * After registered, oxfw instance can be released corresponding to * releasing the sound card instance. */ oxfw->card->private_free = oxfw_card_free; oxfw->card->private_data = oxfw; oxfw->registered = true; return; error: snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->rx_stream); if (oxfw->has_output) snd_oxfw_stream_destroy_simplex(oxfw, &oxfw->tx_stream); snd_card_free(oxfw->card); dev_info(&oxfw->unit->device, "Sound card registration failed: %d\n", err); }

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takashi iwaitakashi iwai61.92%17.14%
stefan richterstefan richter20.64%17.14%
Total313100.00%14100.00%


static int oxfw_probe(struct fw_unit *unit, const struct ieee1394_device_id *entry) { struct snd_oxfw *oxfw; if (entry->vendor_id == VENDOR_LOUD && !detect_loud_models(unit)) return -ENODEV; /* Allocate this independent of sound card instance. */ oxfw = kzalloc(sizeof(struct snd_oxfw), GFP_KERNEL); if (oxfw == NULL) return -ENOMEM; oxfw->entry = entry; oxfw->unit = fw_unit_get(unit); dev_set_drvdata(&unit->device, oxfw); mutex_init(&oxfw->mutex); spin_lock_init(&oxfw->lock); init_waitqueue_head(&oxfw->hwdep_wait); /* Allocate and register this sound card later. */ INIT_DEFERRABLE_WORK(&oxfw->dwork, do_registration); snd_fw_schedule_registration(unit, &oxfw->dwork); return 0; }

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stefan richterstefan richter21.46%120.00%
Total137100.00%5100.00%


static void oxfw_bus_reset(struct fw_unit *unit) { struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device); if (!oxfw->registered) snd_fw_schedule_registration(unit, &oxfw->dwork); fcp_bus_reset(oxfw->unit); if (oxfw->registered) { mutex_lock(&oxfw->mutex); snd_oxfw_stream_update_simplex(oxfw, &oxfw->rx_stream); if (oxfw->has_output) snd_oxfw_stream_update_simplex(oxfw, &oxfw->tx_stream); mutex_unlock(&oxfw->mutex); if (oxfw->entry->vendor_id == OUI_STANTON) snd_oxfw_scs1x_update(oxfw); } }

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stefan richterstefan richter1210.62%222.22%
Total113100.00%9100.00%


static void oxfw_remove(struct fw_unit *unit) { struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device); /* * Confirm to stop the work for registration before the sound card is * going to be released. The work is not scheduled again because bus * reset handler is not called anymore. */ cancel_delayed_work_sync(&oxfw->dwork); if (oxfw->registered) { /* No need to wait for releasing card object in this context. */ snd_card_free_when_closed(oxfw->card); } else { /* Don't forget this case. */ oxfw_free(oxfw); } }

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stefan richterstefan richter23.45%120.00%
Total58100.00%5100.00%

static const struct compat_info griffin_firewave = { .driver_name = "FireWave", .vendor_name = "Griffin", .model_name = "FireWave", }; static const struct compat_info lacie_speakers = { .driver_name = "FWSpeakers", .vendor_name = "LaCie", .model_name = "FireWire Speakers", }; static const struct ieee1394_device_id oxfw_id_table[] = { { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID | IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, .vendor_id = VENDOR_GRIFFIN, .model_id = 0x00f970, .specifier_id = SPECIFIER_1394TA, .version = VERSION_AVC, .driver_data = (kernel_ulong_t)&griffin_firewave, }, { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID | IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, .vendor_id = VENDOR_LACIE, .model_id = 0x00f970, .specifier_id = SPECIFIER_1394TA, .version = VERSION_AVC, .driver_data = (kernel_ulong_t)&lacie_speakers, }, /* Behringer,F-Control Audio 202 */ { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID, .vendor_id = VENDOR_BEHRINGER, .model_id = 0x00fc22, }, /* * Any Mackie(Loud) models (name string/model id): * Onyx-i series (former models): 0x081216 * Mackie Onyx Satellite: 0x00200f * Tapco LINK.firewire 4x6: 0x000460 * d.2 pro: Unknown * d.4 pro: Unknown * U.420: Unknown * U.420d: Unknown */ { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_SPECIFIER_ID | IEEE1394_MATCH_VERSION, .vendor_id = VENDOR_LOUD, .specifier_id = SPECIFIER_1394TA, .version = VERSION_AVC, }, /* TASCAM, FireOne */ { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID, .vendor_id = VENDOR_TASCAM, .model_id = 0x800007, }, /* Stanton, Stanton Controllers & Systems 1 Mixer (SCS.1m) */ { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID, .vendor_id = OUI_STANTON, .model_id = 0x001000, }, /* Stanton, Stanton Controllers & Systems 1 Deck (SCS.1d) */ { .match_flags = IEEE1394_MATCH_VENDOR_ID | IEEE1394_MATCH_MODEL_ID, .vendor_id = OUI_STANTON, .model_id = 0x002000, }, { } }; MODULE_DEVICE_TABLE(ieee1394, oxfw_id_table); static struct fw_driver oxfw_driver = { .driver = { .owner = THIS_MODULE, .name = KBUILD_MODNAME, .bus = &fw_bus_type, }, .probe = oxfw_probe, .update = oxfw_bus_reset, .remove = oxfw_remove, .id_table = oxfw_id_table, };
static int __init snd_oxfw_init(void) { return driver_register(&oxfw_driver.driver); }

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clemens ladischclemens ladisch1688.89%150.00%
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Total18100.00%2100.00%


static void __exit snd_oxfw_exit(void) { driver_unregister(&oxfw_driver.driver); }

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module_init(snd_oxfw_init); module_exit(snd_oxfw_exit);

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clemens ladischclemens ladisch40021.75%310.71%
stefan richterstefan richter754.08%27.14%
takashi iwaitakashi iwai60.33%13.57%
dan carpenterdan carpenter10.05%13.57%
Total1839100.00%28100.00%
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