e359dc24d3
Analog Devices' SigmaStudio can produce firmware blobs for devices with these DSPs embedded (like some audio codecs). Allow these device drivers to easily parse and load them. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
61 lines
1 KiB
C
61 lines
1 KiB
C
/*
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* Load firmware files from Analog Devices SigmaStudio
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*
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* Copyright 2009-2011 Analog Devices Inc.
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*
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* Licensed under the GPL-2 or later.
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*/
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#ifndef __SIGMA_FIRMWARE_H__
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#define __SIGMA_FIRMWARE_H__
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#include <linux/firmware.h>
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#include <linux/types.h>
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struct i2c_client;
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#define SIGMA_MAGIC "ADISIGM"
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struct sigma_firmware {
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const struct firmware *fw;
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size_t pos;
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};
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struct sigma_firmware_header {
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unsigned char magic[7];
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u8 version;
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u32 crc;
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};
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enum {
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SIGMA_ACTION_WRITEXBYTES = 0,
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SIGMA_ACTION_WRITESINGLE,
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SIGMA_ACTION_WRITESAFELOAD,
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SIGMA_ACTION_DELAY,
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SIGMA_ACTION_PLLWAIT,
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SIGMA_ACTION_NOOP,
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SIGMA_ACTION_END,
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};
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struct sigma_action {
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u8 instr;
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u8 len_hi;
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u16 len;
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u16 addr;
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unsigned char payload[];
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};
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static inline u32 sigma_action_len(struct sigma_action *sa)
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{
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return (sa->len_hi << 16) | sa->len;
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}
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static inline size_t sigma_action_size(struct sigma_action *sa, u32 payload_len)
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{
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return sizeof(*sa) + payload_len + (payload_len % 2);
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}
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extern int process_sigma_firmware(struct i2c_client *client, const char *name);
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#endif
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