sound/firewire/lib.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef SOUND_FIREWIRE_LIB_H_INCLUDED
   3 #define SOUND_FIREWIRE_LIB_H_INCLUDED
   4
   5 #include <linux/firewire-constants.h>
   6 #include <linux/types.h>
   7 #include <linux/sched.h>
   8 #include <sound/rawmidi.h>
   9
  10 struct fw_unit;
  11
  12 #define FW_GENERATION_MASK      0x00ff
  13 #define FW_FIXED_GENERATION     0x0100
  14 #define FW_QUIET                0x0200
  15
  16 int snd_fw_transaction(struct fw_unit *unit, int tcode,
  17                        u64 offset, void *buffer, size_t length,
  18                        unsigned int flags);
  19
  20 /* returns true if retrying the transaction would not make sense */
  21 static inline bool rcode_is_permanent_error(int rcode)
  22 {
  23         return rcode == RCODE_TYPE_ERROR || rcode == RCODE_ADDRESS_ERROR;
  24 }
  25
  26 void snd_fw_schedule_registration(struct fw_unit *unit,
  27                                   struct delayed_work *dwork);
  28
  29 #endif