diff options
Diffstat (limited to 'sound/firewire/bebob/bebob_maudio.c')
| -rw-r--r-- | sound/firewire/bebob/bebob_maudio.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sound/firewire/bebob/bebob_maudio.c b/sound/firewire/bebob/bebob_maudio.c index 544094b22c6d..52b1a40e5e13 100644 --- a/sound/firewire/bebob/bebob_maudio.c +++ b/sound/firewire/bebob/bebob_maudio.c @@ -16,6 +16,10 @@ * settings when completing uploading. Then these devices generate bus reset * and are recognized as new devices with the firmware. * + * But with firmware version 5058 or later, the firmware is stored to flash + * memory in the device and drivers can tell bootloader to load the firmware + * by sending a cue. This cue must be sent one time. + * * For streaming, both of output and input streams are needed for Firewire 410 * and Ozonic. The single stream is OK for the other devices even if the clock * source is not SYT-Match (I note no devices use SYT-Match). @@ -31,6 +35,20 @@ * functionality is between 0xffc700700000 to 0xffc70070009c. */ +/* Offset from information register */ +#define INFO_OFFSET_SW_DATE 0x20 + +/* Bootloader Protocol Version 1 */ +#define MAUDIO_BOOTLOADER_CUE1 0x00000001 +/* + * Initializing configuration to factory settings (= 0x1101), (swapped in line), + * Command code is zero (= 0x00), + * the number of operands is zero (= 0x00)(at least significant byte) + */ +#define MAUDIO_BOOTLOADER_CUE2 0x01110000 +/* padding */ +#define MAUDIO_BOOTLOADER_CUE3 0x00000000 + #define MAUDIO_SPECIFIC_ADDRESS 0xffc700000000 #define METER_OFFSET 0x00600000 @@ -67,6 +85,52 @@ struct special_params { struct snd_ctl_elem_id *ctl_id_sync; }; +/* + * For some M-Audio devices, this module just send cue to load firmware. After + * loading, the device generates bus reset and newly detected. + * + * If we make any transactions to load firmware, the operation may failed. + */ +int snd_bebob_maudio_load_firmware(struct fw_unit *unit) +{ + struct fw_device *device = fw_parent_device(unit); + int err, rcode; + u64 date; + __be32 cues[3] = { + MAUDIO_BOOTLOADER_CUE1, + MAUDIO_BOOTLOADER_CUE2, + MAUDIO_BOOTLOADER_CUE3 + }; + + /* check date of software used to build */ + err = snd_bebob_read_block(unit, INFO_OFFSET_SW_DATE, + &date, sizeof(u64)); + if (err < 0) + goto end; + /* + * firmware version 5058 or later has date later than "20070401", but + * 'date' is not null-terminated. + */ + if (date < 0x3230303730343031) { + dev_err(&unit->device, + "Use firmware version 5058 or later\n"); + err = -ENOSYS; + goto end; + } + + rcode = fw_run_transaction(device->card, TCODE_WRITE_BLOCK_REQUEST, + device->node_id, device->generation, + device->max_speed, BEBOB_ADDR_REG_REQ, + cues, sizeof(cues)); + if (rcode != RCODE_COMPLETE) { + dev_err(&unit->device, + "Failed to send a cue to load firmware\n"); + err = -EIO; + } +end: + return err; +} + static inline int get_meter(struct snd_bebob *bebob, void *buf, unsigned int size) { |