1 files changed, 36 insertions, 0 deletions
diff --git a/sound/soc/codecs/sigmadsp.c b/sound/soc/codecs/sigmadsp.c
index c0ad88516f30..aa223c56b2b6 100644
--- a/sound/soc/codecs/sigmadsp.c
+++ b/sound/soc/codecs/sigmadsp.c
@@ -15,6 +15,42 @@
 
 #include "sigmadsp.h"
 
+#define SIGMA_MAGIC "ADISIGM"
+
+struct sigma_firmware_header {
+	unsigned char magic[7];
+	u8 version;
+	__le32 crc;
+} __packed;
+
+enum {
+	SIGMA_ACTION_WRITEXBYTES = 0,
+	SIGMA_ACTION_WRITESINGLE,
+	SIGMA_ACTION_WRITESAFELOAD,
+	SIGMA_ACTION_DELAY,
+	SIGMA_ACTION_PLLWAIT,
+	SIGMA_ACTION_NOOP,
+	SIGMA_ACTION_END,
+};
+
+struct sigma_action {
+	u8 instr;
+	u8 len_hi;
+	__le16 len;
+	__be16 addr;
+	unsigned char payload[];
+} __packed;
+
+struct sigma_firmware {
+	const struct firmware *fw;
+	size_t pos;
+};
+
+static inline u32 sigma_action_len(struct sigma_action *sa)
+{
+	return (sa->len_hi << 16) | le16_to_cpu(sa->len);
+}
+
 static size_t sigma_action_size(struct sigma_action *sa)
 {
 	size_t payload = 0;