linux/drivers/platform/surface/surface_platform_profile.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Surface Platform Profile / Performance Mode driver for Surface System
 * Aggregator Module (thermal and fan subsystem).
 *
 * Copyright (C) 2021-2022 Maximilian Luz <[email protected]>
 */

#include <asm/unaligned.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_profile.h>
#include <linux/types.h>

#include <linux/surface_aggregator/device.h>

// Enum for the platform performance profile sent to the TMP module.
enum ssam_tmp_profile { … };

// Enum for the fan profile sent to the FAN module. This fan profile is
// only sent to the EC if the 'has_fan' property is set. The integers are
// not a typo, they differ from the performance profile indices.
enum ssam_fan_profile { … };

struct ssam_tmp_profile_info { … } __packed;

struct ssam_platform_profile_device { … };

SSAM_DEFINE_SYNC_REQUEST_CL_R(__ssam_tmp_profile_get, struct ssam_tmp_profile_info, {
	.target_category = SSAM_SSH_TC_TMP,
	.command_id      = 0x02,
});

SSAM_DEFINE_SYNC_REQUEST_CL_W(__ssam_tmp_profile_set, __le32, {
	.target_category = SSAM_SSH_TC_TMP,
	.command_id      = 0x03,
});

SSAM_DEFINE_SYNC_REQUEST_W(__ssam_fan_profile_set, u8, {
	.target_category = SSAM_SSH_TC_FAN,
	.target_id = SSAM_SSH_TID_SAM,
	.command_id = 0x0e,
	.instance_id = 0x01,
});

static int ssam_tmp_profile_get(struct ssam_device *sdev, enum ssam_tmp_profile *p)
{ … }

static int ssam_tmp_profile_set(struct ssam_device *sdev, enum ssam_tmp_profile p)
{ … }

static int ssam_fan_profile_set(struct ssam_device *sdev, enum ssam_fan_profile p)
{ … }

static int convert_ssam_tmp_to_profile(struct ssam_device *sdev, enum ssam_tmp_profile p)
{ … }


static int convert_profile_to_ssam_tmp(struct ssam_device *sdev, enum platform_profile_option p)
{ … }

static int convert_profile_to_ssam_fan(struct ssam_device *sdev, enum platform_profile_option p)
{ … }

static int ssam_platform_profile_get(struct platform_profile_handler *pprof,
				     enum platform_profile_option *profile)
{ … }

static int ssam_platform_profile_set(struct platform_profile_handler *pprof,
				     enum platform_profile_option profile)
{ … }

static int surface_platform_profile_probe(struct ssam_device *sdev)
{ … }

static void surface_platform_profile_remove(struct ssam_device *sdev)
{ … }

static const struct ssam_device_id ssam_platform_profile_match[] = …;
MODULE_DEVICE_TABLE(ssam, ssam_platform_profile_match);

static struct ssam_device_driver surface_platform_profile = …;
module_ssam_device_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;