linux/drivers/platform/x86/intel/int3472/tps68470.c

// SPDX-License-Identifier: GPL-2.0
/* Author: Dan Scally <[email protected]> */

#include <linux/acpi.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tps68470.h>
#include <linux/platform_device.h>
#include <linux/platform_data/tps68470.h>
#include <linux/regmap.h>
#include <linux/string.h>

#include "common.h"
#include "tps68470.h"

#define DESIGNED_FOR_CHROMEOS …
#define DESIGNED_FOR_WINDOWS …

#define TPS68470_WIN_MFD_CELL_COUNT …

static const struct mfd_cell tps68470_cros[] = …;

static const struct regmap_config tps68470_regmap_config = …;

static int tps68470_chip_init(struct device *dev, struct regmap *regmap)
{ … }

/** skl_int3472_tps68470_calc_type: Check what platform a device is designed for
 * @adev: A pointer to a &struct acpi_device
 *
 * Check CLDB buffer against the PMIC's adev. If present, then we check
 * the value of control_logic_type field and follow one of the
 * following scenarios:
 *
 *	1. No CLDB - likely ACPI tables designed for ChromeOS. We
 *	create platform devices for the GPIOs and OpRegion drivers.
 *
 *	2. CLDB, with control_logic_type = 2 - probably ACPI tables
 *	made for Windows 2-in-1 platforms. Register pdevs for GPIO,
 *	Clock and Regulator drivers to bind to.
 *
 *	3. Any other value in control_logic_type, we should never have
 *	gotten to this point; fail probe and return.
 *
 * Return:
 * * 1		Device intended for ChromeOS
 * * 2		Device intended for Windows
 * * -EINVAL	Where @adev has an object named CLDB but it does not conform to
 *		our expectations
 */
static int skl_int3472_tps68470_calc_type(struct acpi_device *adev)
{ … }

/*
 * Return the size of the flexible array member, because we'll need that later
 * on to pass .pdata_size to cells.
 */
static int
skl_int3472_fill_clk_pdata(struct device *dev, struct tps68470_clk_platform_data **clk_pdata)
{ … }

static int skl_int3472_tps68470_probe(struct i2c_client *client)
{ … }

static void skl_int3472_tps68470_remove(struct i2c_client *client)
{ … }

static const struct acpi_device_id int3472_device_id[] = …;
MODULE_DEVICE_TABLE(acpi, int3472_device_id);

static struct i2c_driver int3472_tps68470 = …;
module_i2c_driver(…) …;

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