drivers/thunderbolt/quirks.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Thunderbolt driver - quirks
   4  *
   5  * Copyright (c) 2020 Mario Limonciello <mario.limonciello@dell.com>
   6  */
   7
   8 #include "tb.h"
   9
  10 static void quirk_force_power_link(struct tb_switch *sw)
  11 {
  12         sw->quirks |= QUIRK_FORCE_POWER_LINK_CONTROLLER;
  13 }
  14
  15 struct tb_quirk {
  16         u16 vendor;
  17         u16 device;
  18         void (*hook)(struct tb_switch *sw);
  19 };
  20
  21 static const struct tb_quirk tb_quirks[] = {
  22         /* Dell WD19TB supports self-authentication on unplug */
  23         { 0x00d4, 0xb070, quirk_force_power_link },
  24 };
  25
  26 /**
  27  * tb_check_quirks() - Check for quirks to apply
  28  * @sw: Thunderbolt switch
  29  *
  30  * Apply any quirks for the Thunderbolt controller.
  31  */
  32 void tb_check_quirks(struct tb_switch *sw)
  33 {
  34         int i;
  35
  36         for (i = 0; i < ARRAY_SIZE(tb_quirks); i++) {
  37                 const struct tb_quirk *q = &tb_quirks[i];
  38
  39                 if (sw->device == q->device && sw->vendor == q->vendor)
  40                         q->hook(sw);
  41         }
  42 }