1 files changed, 55 insertions, 0 deletions

diff --git a/sound/soc/codecs/sigmadsp.h b/sound/soc/codecs/sigmadsp.h
new file mode 100644
index 000000000000..d0de882c0d96
--- /dev/null
+++ b/sound/soc/codecs/sigmadsp.h
@@ -0,0 +1,55 @@
+/*
+ * Load firmware files from Analog Devices SigmaStudio
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#ifndef __SIGMA_FIRMWARE_H__
+#define __SIGMA_FIRMWARE_H__
+
+#include <linux/firmware.h>
+#include <linux/types.h>
+
+struct i2c_client;
+
+#define SIGMA_MAGIC "ADISIGM"
+
+struct sigma_firmware {
+        const struct firmware *fw;
+        size_t pos;
+};
+
+struct sigma_firmware_header {
+        unsigned char magic[7];
+        u8 version;
+        __le32 crc;
+};
+
+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[];
+};
+
+static inline u32 sigma_action_len(struct sigma_action *sa)
+{
+        return (sa->len_hi << 16) | le16_to_cpu(sa->len);
+}
+
+extern int process_sigma_firmware(struct i2c_client *client, const char *name);
+
+#endif