drivers/i3c/master/mipi-i3c-hci/ibi.h

   1 /* SPDX-License-Identifier: BSD-3-Clause */
   2 /*
   3  * Copyright (c) 2020, MIPI Alliance, Inc.
   4  *
   5  * Author: Nicolas Pitre <npitre@baylibre.com>
   6  *
   7  * Common IBI related stuff
   8  */
   9
  10 #ifndef IBI_H
  11 #define IBI_H
  12
  13 /*
  14  * IBI Status Descriptor bits
  15  */
  16 #define IBI_STS                         BIT(31)
  17 #define IBI_ERROR                       BIT(30)
  18 #define IBI_STATUS_TYPE                 BIT(29)
  19 #define IBI_HW_CONTEXT                  GENMASK(28, 26)
  20 #define IBI_TS                          BIT(25)
  21 #define IBI_LAST_STATUS                 BIT(24)
  22 #define IBI_CHUNKS                      GENMASK(23, 16)
  23 #define IBI_ID                          GENMASK(15, 8)
  24 #define IBI_TARGET_ADDR                 GENMASK(15, 9)
  25 #define IBI_TARGET_RNW                  BIT(8)
  26 #define IBI_DATA_LENGTH                 GENMASK(7, 0)
  27
  28 /*  handy helpers */
  29 static inline struct i3c_dev_desc *
  30 i3c_hci_addr_to_dev(struct i3c_hci *hci, unsigned int addr)
  31 {
  32         struct i3c_bus *bus = i3c_master_get_bus(&hci->master);
  33         struct i3c_dev_desc *dev;
  34
  35         i3c_bus_for_each_i3cdev(bus, dev) {
  36                 if (dev->info.dyn_addr == addr)
  37                         return dev;
  38         }
  39         return NULL;
  40 }
  41
  42 #endif