sound/usb/line6/pod.c

Source file repositories/reference/linux-study-clean/sound/usb/line6/pod.c

File Facts

System
Linux kernel
Corpus path
sound/usb/line6/pod.c
Extension
.c
Size
13271 bytes
Lines
543
Domain
Driver Families
Bucket
sound/usb
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct usb_line6_pod {
	/* Generic Line 6 USB data */
	struct usb_line6 line6;

	/* Instrument monitor level */
	int monitor_level;

	/* Current progress in startup procedure */
	int startup_progress;

	/* Serial number of device */
	u32 serial_number;

	/* Firmware version (x 100) */
	int firmware_version;

	/* Device ID */
	int device_id;
};

#define line6_to_pod(x)		container_of(x, struct usb_line6_pod, line6)

#define POD_SYSEX_CODE 3

/* *INDENT-OFF* */

enum {
	POD_SYSEX_SAVE      = 0x24,
	POD_SYSEX_SYSTEM    = 0x56,
	POD_SYSEX_SYSTEMREQ = 0x57,
	/* POD_SYSEX_UPDATE    = 0x6c, */  /* software update! */
	POD_SYSEX_STORE     = 0x71,
	POD_SYSEX_FINISH    = 0x72,
	POD_SYSEX_DUMPMEM   = 0x73,
	POD_SYSEX_DUMP      = 0x74,
	POD_SYSEX_DUMPREQ   = 0x75

	/* dumps entire internal memory of PODxt Pro */
	/* POD_SYSEX_DUMPMEM2  = 0x76 */
};

enum {
	POD_MONITOR_LEVEL  = 0x04,
	POD_SYSTEM_INVALID = 0x10000
};

/* *INDENT-ON* */

enum {
	POD_DUMP_MEMORY = 2
};

enum {
	POD_BUSY_READ,
	POD_BUSY_WRITE,
	POD_CHANNEL_DIRTY,
	POD_SAVE_PRESSED,
	POD_BUSY_MIDISEND
};

static const struct snd_ratden pod_ratden = {
	.num_min = 78125,
	.num_max = 78125,
	.num_step = 1,
	.den = 2
};

static struct line6_pcm_properties pod_pcm_properties = {
	.playback_hw = {
				  .info = (SNDRV_PCM_INFO_MMAP |
					   SNDRV_PCM_INFO_INTERLEAVED |
					   SNDRV_PCM_INFO_BLOCK_TRANSFER |
					   SNDRV_PCM_INFO_MMAP_VALID |
					   SNDRV_PCM_INFO_PAUSE |
					   SNDRV_PCM_INFO_SYNC_START),
				  .formats = SNDRV_PCM_FMTBIT_S24_3LE,
				  .rates = SNDRV_PCM_RATE_KNOT,
				  .rate_min = 39062,
				  .rate_max = 39063,
				  .channels_min = 2,
				  .channels_max = 2,
				  .buffer_bytes_max = 60000,
				  .period_bytes_min = 64,
				  .period_bytes_max = 8192,
				  .periods_min = 1,
				  .periods_max = 1024},
	.capture_hw = {
				 .info = (SNDRV_PCM_INFO_MMAP |
					  SNDRV_PCM_INFO_INTERLEAVED |
					  SNDRV_PCM_INFO_BLOCK_TRANSFER |

Annotation

Implementation Notes