1 files changed, 68 insertions, 0 deletions
diff --git a/bsps/bfin/include/libcpu/twi.h b/bsps/bfin/include/libcpu/twi.h
new file mode 100644
index 0000000000..2392ba532b
--- /dev/null
+++ b/bsps/bfin/include/libcpu/twi.h
@@ -0,0 +1,68 @@
+/* not yet implemented */
+
+/*
+ *  RTEMS driver for Blackfin TWI (I2C)
+ *
+ *  COPYRIGHT (c) 2008 Kallisti Labs, Los Gatos, CA, USA
+ *            written by Allan Hessenflow <allanh@kallisti.com>
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#ifndef _twi_h_
+#define _twi_h_
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+typedef struct {
+  uint32_t sclk;
+  void *base;
+  bool fast;
+  int8_t slave_address;
+} bfin_twi_config_t;
+
+typedef struct bfin_twi_request_s {
+  bool write;
+  int count;
+  void *data;
+  /* Chained requests are done with repeated start conditions in between.
+     These are useful for atomic address write/data read transactions
+     (which can be important in multi-master configurations), and for
+     doing 10-bit addressing. */
+  struct bfin_twi_request_s *next;
+} bfin_twi_request_t;
+
+typedef rtems_status_code (*bfin_twi_callback_t)(int channel,
+                                                 void *arg,
+                                                 bool general_call,
+                                                 bool write,
+                                                 bool done,
+                                                 int read_count,
+                                                 uint8_t *data);
+
+
+rtems_status_code bfin_twi_init(int channel, bfin_twi_config_t *config);
+
+rtems_status_code bfin_twi_register_callback(int channel,
+                                             bfin_twi_callback_t callback,
+                                             void *arg);
+
+void bfin_twi_isr(int source);
+
+rtems_status_code bfin_twi_request(int channel, uint8_t address,
+                                   bfin_twi_request_t *request,
+                                   rtems_interval timeout);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _twi_h_ */
+