cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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thinkpad_helper.c (891B)

      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 */