Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1/*
2 * Load firmware files from Analog Devices SigmaStudio
3 *
4 * Copyright 2009-2011 Analog Devices Inc.
5 *
6 * Licensed under the GPL-2 or later.
7 */
8
9#ifndef __SIGMA_FIRMWARE_H__
10#define __SIGMA_FIRMWARE_H__
11
12#include <linux/firmware.h>
13#include <linux/types.h>
14
15struct i2c_client;
16
17#define SIGMA_MAGIC "ADISIGM"
18
19struct sigma_firmware {
20 const struct firmware *fw;
21 size_t pos;
22};
23
24struct sigma_firmware_header {
25 unsigned char magic[7];
26 u8 version;
27 u32 crc;
28};
29
30enum {
31 SIGMA_ACTION_WRITEXBYTES = 0,
32 SIGMA_ACTION_WRITESINGLE,
33 SIGMA_ACTION_WRITESAFELOAD,
34 SIGMA_ACTION_DELAY,
35 SIGMA_ACTION_PLLWAIT,
36 SIGMA_ACTION_NOOP,
37 SIGMA_ACTION_END,
38};
39
40struct sigma_action {
41 u8 instr;
42 u8 len_hi;
43 u16 len;
44 u16 addr;
45 unsigned char payload[];
46};
47
48static inline u32 sigma_action_len(struct sigma_action *sa)
49{
50 return (sa->len_hi << 16) | sa->len;
51}
52
53static inline size_t sigma_action_size(struct sigma_action *sa, u32 payload_len)
54{
55 return sizeof(*sa) + payload_len + (payload_len % 2);
56}
57
58extern int process_sigma_firmware(struct i2c_client *client, const char *name);
59
60#endif