linux/drivers/acpi/pmic/intel_pmic.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * intel_pmic.c - Intel PMIC operation region driver
 *
 * Copyright (C) 2014 Intel Corporation. All rights reserved.
 */

#include <linux/export.h>
#include <linux/acpi.h>
#include <linux/mfd/intel_soc_pmic.h>
#include <linux/regmap.h>
#include <acpi/acpi_lpat.h>
#include "intel_pmic.h"

#define PMIC_POWER_OPREGION_ID …
#define PMIC_THERMAL_OPREGION_ID …
#define PMIC_REGS_OPREGION_ID …

struct intel_pmic_regs_handler_ctx { … };

struct intel_pmic_opregion { … };

static struct intel_pmic_opregion *intel_pmic_opregion;

static int pmic_get_reg_bit(int address, const struct pmic_table *table,
			    int count, int *reg, int *bit)
{ … }

static acpi_status intel_pmic_power_handler(u32 function,
		acpi_physical_address address, u32 bits, u64 *value64,
		void *handler_context, void *region_context)
{ … }

static int pmic_read_temp(struct intel_pmic_opregion *opregion,
			  int reg, u64 *value)
{ … }

static int pmic_thermal_temp(struct intel_pmic_opregion *opregion, int reg,
			     u32 function, u64 *value)
{ … }

static int pmic_thermal_aux(struct intel_pmic_opregion *opregion, int reg,
			    u32 function, u64 *value)
{ … }

static int pmic_thermal_pen(struct intel_pmic_opregion *opregion, int reg,
			    int bit, u32 function, u64 *value)
{ … }

static bool pmic_thermal_is_temp(int address)
{ … }

static bool pmic_thermal_is_aux(int address)
{ … }

static bool pmic_thermal_is_pen(int address)
{ … }

static acpi_status intel_pmic_thermal_handler(u32 function,
		acpi_physical_address address, u32 bits, u64 *value64,
		void *handler_context, void *region_context)
{ … }

static acpi_status intel_pmic_regs_handler(u32 function,
		acpi_physical_address address, u32 bits, u64 *value64,
		void *handler_context, void *region_context)
{ … }

int intel_pmic_install_opregion_handler(struct device *dev, acpi_handle handle,
					struct regmap *regmap,
					const struct intel_pmic_opregion_data *d)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * intel_soc_pmic_exec_mipi_pmic_seq_element - Execute PMIC MIPI sequence
 * @i2c_address:  I2C client address for the PMIC
 * @reg_address:  PMIC register address
 * @value:        New value for the register bits to change
 * @mask:         Mask indicating which register bits to change
 *
 * DSI LCD panels describe an initialization sequence in the i915 VBT (Video
 * BIOS Tables) using so called MIPI sequences. One possible element in these
 * sequences is a PMIC specific element of 15 bytes.
 *
 * This function executes these PMIC specific elements sending the embedded
 * commands to the PMIC.
 *
 * Return 0 on success, < 0 on failure.
 */
int intel_soc_pmic_exec_mipi_pmic_seq_element(u16 i2c_address, u32 reg_address,
					      u32 value, u32 mask)
{ … }
EXPORT_SYMBOL_GPL(…);