LXR linux/sound/pci/hda/thinkpad

   1// SPDX-License-Identifier: GPL-2.0
   2/* Helper functions for Thinkpad LED control;
   3 * to be included from codec driver
   4 */
   5
   6#if IS_ENABLED(CONFIG_THINKPAD_ACPI)
   7
   8#include <linux/acpi.h>
   9#include <linux/leds.h>
  10
  11static bool is_thinkpad(struct hda_codec *codec)
  12{
  13        return (codec->core.subsystem_id >> 16 == 0x17aa) &&
  14               (acpi_dev_found("LEN0068") || acpi_dev_found("LEN0268") ||
  15                acpi_dev_found("IBM0068"));
  16}
  17
  18static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
  19                                    const struct hda_fixup *fix, int action)
  20{
  21        if (action == HDA_FIXUP_ACT_PRE_PROBE) {
  22                if (!is_thinkpad(codec))
  23                        return;
  24                snd_hda_gen_add_mute_led_cdev(codec, NULL);
  25                snd_hda_gen_add_micmute_led_cdev(codec, NULL);
  26        }
  27}
  28
  29#else /* CONFIG_THINKPAD_ACPI */
  30
  31static void hda_fixup_thinkpad_acpi(struct hda_codec *codec,
  32                                    const struct hda_fixup *fix, int action)
  33{
  34}
  35
  36#endif /* CONFIG_THINKPAD_ACPI */
  37