1 files changed, 50 insertions, 1 deletions

diff --git a/firmware/target/arm/as3525/ascodec-target.h b/firmware/target/arm/as3525/ascodec-target.h
index 3464bbaa51..4b110412c1 100644
--- a/firmware/target/arm/as3525/ascodec-target.h
+++ b/firmware/target/arm/as3525/ascodec-target.h
@@ -26,6 +26,7 @@
 #define _ASCODEC_TARGET_H
 
 #include "as3514.h"
+#include "kernel.h" /* for struct wakeup */
 
 /*  Charge Pump and Power management Settings  */
 #define AS314_CP_DCDC3_SETTING    \
@@ -41,13 +42,61 @@
 #define CVDD_1_10          2
 #define CVDD_1_05          3
 
+#define ASCODEC_REQ_READ   0
+#define ASCODEC_REQ_WRITE  1
+
+/*
+ * How many bytes we using in struct ascodec_request for the data buffer.
+ * 4 fits the alignment best right now.
+ * We don't actually use more than 2 at the moment (in adc_read).
+ * Upper limit would be 255 since DACNT is 8 bits!
+ */
+#define ASCODEC_REQ_MAXLEN 4
+
+typedef void (ascodec_cb_fn)(unsigned const char *data, unsigned cnt);
+
+struct ascodec_request {
+    unsigned char type;
+    unsigned char index;
+    unsigned char status;
+    unsigned char cnt;
+    unsigned char data[ASCODEC_REQ_MAXLEN];
+    struct wakeup wkup;
+    ascodec_cb_fn *callback;
+    struct ascodec_request *next;
+};
+
 void ascodec_init(void);
 
 int ascodec_write(unsigned int index, unsigned int value);
 
 int ascodec_read(unsigned int index);
 
-int ascodec_readbytes(int index, int len, unsigned char *data);
+int ascodec_readbytes(unsigned int index, unsigned int len, unsigned char *data);
+
+/*
+ * The request struct passed in must be allocated statically.
+ * If you call ascodec_async_write from different places, each
+ * call needs it's own request struct.
+ * This comment is duplicated in .c and .h for your convenience.
+ */
+void ascodec_async_write(unsigned index, unsigned int value, struct ascodec_request *req);
+
+/*
+ * The request struct passed in must be allocated statically.
+ * If you call ascodec_async_read from different places, each
+ * call needs it's own request struct.
+ * If len is bigger than ASCODEC_REQ_MAXLEN it will be
+ * set to ASCODEC_REQ_MAXLEN.
+ * This comment is duplicated in .c and .h for your convenience.
+ */
+void ascodec_async_read(unsigned index, unsigned int len,
+                        struct ascodec_request *req, ascodec_cb_fn *cb);
+
+void ascodec_req_init(struct ascodec_request *req, int type,
+                      unsigned int index, unsigned int cnt);
+
+void ascodec_submit(struct ascodec_request *req);
 
 void ascodec_lock(void);