caif-hsi: Making read and writes asynchronous.

[firefly-linux-kernel-4.4.55.git] / include / net / caif / caif_hsi.h

diff --git a/include/net/caif/caif_hsi.h b/include/net/caif/caif_hsi.h
index c5dedd87b4cb1048862ca47de863fc9517d4e7b7..17dff451efe31120f8cc2da0e5dcf74cf63ecfe2 100644 (file)
--- a/include/net/caif/caif_hsi.h
+++ b/include/net/caif/caif_hsi.h
@@ -75,18 +75,21 @@ struct cfhsi_desc {
 #define CFHSI_WAKE_UP_ACK                      1
 #define CFHSI_WAKE_DOWN_ACK                    2
 #define CFHSI_AWAKE                            3
-#define CFHSI_PENDING_RX                       4
-#define CFHSI_SHUTDOWN                         6
-#define CFHSI_FLUSH_FIFO                       7
+#define CFHSI_WAKELOCK_HELD                    4
+#define CFHSI_SHUTDOWN                         5
+#define CFHSI_FLUSH_FIFO                       6
 
 #ifndef CFHSI_INACTIVITY_TOUT
 #define CFHSI_INACTIVITY_TOUT                  (1 * HZ)
 #endif /* CFHSI_INACTIVITY_TOUT */
 
-#ifndef CFHSI_WAKEUP_TOUT
-#define CFHSI_WAKEUP_TOUT                      (3 * HZ)
-#endif /* CFHSI_WAKEUP_TOUT */
+#ifndef CFHSI_WAKE_TOUT
+#define CFHSI_WAKE_TOUT                        (3 * HZ)
+#endif /* CFHSI_WAKE_TOUT */
 
+#ifndef CFHSI_MAX_RX_RETRIES
+#define CFHSI_MAX_RX_RETRIES           (10 * HZ)
+#endif
 
 /* Structure implemented by the CAIF HSI driver. */
 struct cfhsi_drv {
@@ -109,6 +112,15 @@ struct cfhsi_dev {
        struct cfhsi_drv *drv;
 };
 
+/* Structure holds status of received CAIF frames processing */
+struct cfhsi_rx_state {
+       int state;
+       int nfrms;
+       int pld_len;
+       int retries;
+       bool piggy_desc;
+};
+
 /* Structure implemented by CAIF HSI drivers. */
 struct cfhsi {
        struct caif_dev_common cfdev;
@@ -118,7 +130,7 @@ struct cfhsi {
        struct cfhsi_drv drv;
        struct cfhsi_dev *dev;
        int tx_state;
-       int rx_state;
+       struct cfhsi_rx_state rx_state;
        int rx_len;
        u8 *rx_ptr;
        u8 *tx_buf;
@@ -130,13 +142,12 @@ struct cfhsi {
        struct list_head list;
        struct work_struct wake_up_work;
        struct work_struct wake_down_work;
-       struct work_struct rx_done_work;
-       struct work_struct tx_done_work;
        struct workqueue_struct *wq;
        wait_queue_head_t wake_up_wait;
        wait_queue_head_t wake_down_wait;
        wait_queue_head_t flush_fifo_wait;
        struct timer_list timer;
+       struct timer_list rx_slowpath_timer;
        unsigned long bits;
 };