drivers/dma/ti/k3-psil.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com
   4  *  Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
   5  */
   6
   7 #include <linux/kernel.h>
   8 #include <linux/err.h>
   9
  10 #include "k3-psil-priv.h"
  11
  12 static const struct psil_ep_map *soc_ep_map;
  13
  14 struct psil_endpoint_config *psil_get_ep_config(u32 thread_id)
  15 {
  16         int i;
  17
  18         if (!soc_ep_map) {
  19                 if (IS_ENABLED(CONFIG_SOC_K3_AM654))
  20                         soc_ep_map = &am654_ep_map;
  21                 else if (IS_ENABLED(CONFIG_SOC_K3_J721E))
  22                         soc_ep_map = &j721e_ep_map;
  23                 else if (IS_ENABLED(CONFIG_SOC_K3_J721S2))
  24                         soc_ep_map = &j721s2_ep_map;
  25                 else if (IS_ENABLED(CONFIG_SOC_K3_AM642))
  26                         soc_ep_map = &am64_ep_map;
  27                 else if (IS_ENABLED(CONFIG_SOC_K3_AM625))
  28                         soc_ep_map = &am62_ep_map;
  29         }
  30
  31         if (thread_id & K3_PSIL_DST_THREAD_ID_OFFSET && soc_ep_map->dst) {
  32                 /* check in destination thread map */
  33                 for (i = 0; i < soc_ep_map->dst_count; i++) {
  34                         if (soc_ep_map->dst[i].thread_id == thread_id)
  35                                 return &soc_ep_map->dst[i].ep_config;
  36                 }
  37         }
  38
  39         thread_id &= ~K3_PSIL_DST_THREAD_ID_OFFSET;
  40         if (soc_ep_map->src) {
  41                 for (i = 0; i < soc_ep_map->src_count; i++) {
  42                         if (soc_ep_map->src[i].thread_id == thread_id)
  43                                 return &soc_ep_map->src[i].ep_config;
  44                 }
  45         }
  46
  47         return ERR_PTR(-ENOENT);
  48 }