1 /* 2 * oxfw.c - a part of driver for OXFW970/971 based devices 3 * 4 * Copyright (c) Clemens Ladisch <clemens@ladisch.de> 5 * Licensed under the terms of the GNU General Public License, version 2. 6 */ 7 8 #include "oxfw.h" 9 10 #define OXFORD_FIRMWARE_ID_ADDRESS (CSR_REGISTER_BASE + 0x50000) 11 /* 0x970?vvvv or 0x971?vvvv, where vvvv = firmware version */ 12 13 #define OXFORD_HARDWARE_ID_ADDRESS (CSR_REGISTER_BASE + 0x90020) 14 #define OXFORD_HARDWARE_ID_OXFW970 0x39443841 15 #define OXFORD_HARDWARE_ID_OXFW971 0x39373100 16 17 #define VENDOR_GRIFFIN 0x001292 18 #define VENDOR_LACIE 0x00d04b 19 20 #define SPECIFIER_1394TA 0x00a02d 21 #define VERSION_AVC 0x010001 22 23 MODULE_DESCRIPTION("Oxford Semiconductor FW970/971 driver"); 24 MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); 25 MODULE_LICENSE("GPL v2"); 26 MODULE_ALIAS("snd-firewire-speakers"); 27 28 static u32 oxfw_read_firmware_version(struct fw_unit *unit) 29 { 30 __be32 data; 31 int err; 32 33 err = snd_fw_transaction(unit, TCODE_READ_QUADLET_REQUEST, 34 OXFORD_FIRMWARE_ID_ADDRESS, &data, 4, 0); 35 return err >= 0 ? be32_to_cpu(data) : 0; 36 } 37 38 static void oxfw_card_free(struct snd_card *card) 39 { 40 struct snd_oxfw *oxfw = card->private_data; 41 42 mutex_destroy(&oxfw->mutex); 43 } 44 45 static int oxfw_probe(struct fw_unit *unit, 46 const struct ieee1394_device_id *id) 47 { 48 struct fw_device *fw_dev = fw_parent_device(unit); 49 struct snd_card *card; 50 struct snd_oxfw *oxfw; 51 u32 firmware; 52 int err; 53 54 err = snd_card_new(&unit->device, -1, NULL, THIS_MODULE, 55 sizeof(*oxfw), &card); 56 if (err < 0) 57 return err; 58 59 card->private_free = oxfw_card_free; 60 oxfw = card->private_data; 61 oxfw->card = card; 62 mutex_init(&oxfw->mutex); 63 oxfw->unit = unit; 64 oxfw->device_info = (const struct device_info *)id->driver_data; 65 66 strcpy(card->driver, oxfw->device_info->driver_name); 67 strcpy(card->shortname, oxfw->device_info->short_name); 68 firmware = oxfw_read_firmware_version(unit); 69 snprintf(card->longname, sizeof(card->longname), 70 "%s (OXFW%x %04x), GUID %08x%08x at %s, S%d", 71 oxfw->device_info->long_name, 72 firmware >> 20, firmware & 0xffff, 73 fw_dev->config_rom[3], fw_dev->config_rom[4], 74 dev_name(&unit->device), 100 << fw_dev->max_speed); 75 strcpy(card->mixername, "OXFW"); 76 77 err = snd_oxfw_create_pcm(oxfw); 78 if (err < 0) 79 goto error; 80 81 err = snd_oxfw_create_mixer(oxfw); 82 if (err < 0) 83 goto error; 84 85 err = snd_oxfw_stream_init_simplex(oxfw); 86 if (err < 0) 87 goto error; 88 89 err = snd_card_register(card); 90 if (err < 0) { 91 snd_oxfw_stream_destroy_simplex(oxfw); 92 goto error; 93 } 94 dev_set_drvdata(&unit->device, oxfw); 95 96 return 0; 97 error: 98 snd_card_free(card); 99 return err; 100 } 101 102 static void oxfw_bus_reset(struct fw_unit *unit) 103 { 104 struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device); 105 106 fcp_bus_reset(oxfw->unit); 107 108 mutex_lock(&oxfw->mutex); 109 snd_oxfw_stream_update_simplex(oxfw); 110 mutex_unlock(&oxfw->mutex); 111 } 112 113 static void oxfw_remove(struct fw_unit *unit) 114 { 115 struct snd_oxfw *oxfw = dev_get_drvdata(&unit->device); 116 117 snd_card_disconnect(oxfw->card); 118 119 snd_oxfw_stream_destroy_simplex(oxfw); 120 121 snd_card_free_when_closed(oxfw->card); 122 } 123 124 static const struct device_info griffin_firewave = { 125 .driver_name = "FireWave", 126 .short_name = "FireWave", 127 .long_name = "Griffin FireWave Surround", 128 .pcm_constraints = firewave_constraints, 129 .mixer_channels = 6, 130 .mute_fb_id = 0x01, 131 .volume_fb_id = 0x02, 132 }; 133 134 static const struct device_info lacie_speakers = { 135 .driver_name = "FWSpeakers", 136 .short_name = "FireWire Speakers", 137 .long_name = "LaCie FireWire Speakers", 138 .pcm_constraints = lacie_speakers_constraints, 139 .mixer_channels = 1, 140 .mute_fb_id = 0x01, 141 .volume_fb_id = 0x01, 142 }; 143 144 static const struct ieee1394_device_id oxfw_id_table[] = { 145 { 146 .match_flags = IEEE1394_MATCH_VENDOR_ID | 147 IEEE1394_MATCH_MODEL_ID | 148 IEEE1394_MATCH_SPECIFIER_ID | 149 IEEE1394_MATCH_VERSION, 150 .vendor_id = VENDOR_GRIFFIN, 151 .model_id = 0x00f970, 152 .specifier_id = SPECIFIER_1394TA, 153 .version = VERSION_AVC, 154 .driver_data = (kernel_ulong_t)&griffin_firewave, 155 }, 156 { 157 .match_flags = IEEE1394_MATCH_VENDOR_ID | 158 IEEE1394_MATCH_MODEL_ID | 159 IEEE1394_MATCH_SPECIFIER_ID | 160 IEEE1394_MATCH_VERSION, 161 .vendor_id = VENDOR_LACIE, 162 .model_id = 0x00f970, 163 .specifier_id = SPECIFIER_1394TA, 164 .version = VERSION_AVC, 165 .driver_data = (kernel_ulong_t)&lacie_speakers, 166 }, 167 { } 168 }; 169 MODULE_DEVICE_TABLE(ieee1394, oxfw_id_table); 170 171 static struct fw_driver oxfw_driver = { 172 .driver = { 173 .owner = THIS_MODULE, 174 .name = KBUILD_MODNAME, 175 .bus = &fw_bus_type, 176 }, 177 .probe = oxfw_probe, 178 .update = oxfw_bus_reset, 179 .remove = oxfw_remove, 180 .id_table = oxfw_id_table, 181 }; 182 183 static int __init snd_oxfw_init(void) 184 { 185 return driver_register(&oxfw_driver.driver); 186 } 187 188 static void __exit snd_oxfw_exit(void) 189 { 190 driver_unregister(&oxfw_driver.driver); 191 } 192 193 module_init(snd_oxfw_init); 194 module_exit(snd_oxfw_exit); 195