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/*
* Dollar Cove TI PMIC operation region driver
* Copyright (C) 2014 Intel Corporation. All rights reserved.
*
* Rewritten and cleaned up
* Copyright (C) 2017 Takashi Iwai <tiwai@suse.de>
*/
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/mfd/intel_soc_pmic.h>
#include <linux/platform_device.h>
#include "intel_pmic.h"
/* registers stored in 16bit BE (high:low, total 10bit) */
#define CHTDC_TI_VBAT 0x54
#define CHTDC_TI_DIETEMP 0x56
#define CHTDC_TI_BPTHERM 0x58
#define CHTDC_TI_GPADC 0x5a
static struct pmic_table chtdc_ti_power_table[] = {
{ .address = 0x00, .reg = 0x41 },
{ .address = 0x04, .reg = 0x42 },
{ .address = 0x08, .reg = 0x43 },
{ .address = 0x0c, .reg = 0x45 },
{ .address = 0x10, .reg = 0x46 },
{ .address = 0x14, .reg = 0x47 },
{ .address = 0x18, .reg = 0x48 },
{ .address = 0x1c, .reg = 0x49 },
{ .address = 0x20, .reg = 0x4a },
{ .address = 0x24, .reg = 0x4b },
{ .address = 0x28, .reg = 0x4c },
{ .address = 0x2c, .reg = 0x4d },
{ .address = 0x30, .reg = 0x4e },
};
static struct pmic_table chtdc_ti_thermal_table[] = {
{
.address = 0x00,
.reg = CHTDC_TI_GPADC
},
{
.address = 0x0c,
.reg = CHTDC_TI_GPADC
},
/* TMP2 -> SYSTEMP */
{
.address = 0x18,
.reg = CHTDC_TI_GPADC
},
/* TMP3 -> BPTHERM */
{
.address = 0x24,
.reg = CHTDC_TI_BPTHERM
},
{
.address = 0x30,
.reg = CHTDC_TI_GPADC
},
/* TMP5 -> DIETEMP */
{
.address = 0x3c,
.reg = CHTDC_TI_DIETEMP
},
};
static int chtdc_ti_pmic_get_power(struct regmap *regmap, int reg, int bit,
u64 *value)
{
int data;
if (regmap_read(regmap, reg, &data))
return -EIO;
*value = data & 1;
return 0;
}
static int chtdc_ti_pmic_update_power(struct regmap *regmap, int reg, int bit,
bool on)
{
return regmap_update_bits(regmap, reg, 1, on);
}
static int chtdc_ti_pmic_get_raw_temp(struct regmap *regmap, int reg)
{
u8 buf[2];
if (regmap_bulk_read(regmap, reg, buf, 2))
return -EIO;
/* stored in big-endian */
return ((buf[0] & 0x03) << 8) | buf[1];
}
static struct intel_pmic_opregion_data chtdc_ti_pmic_opregion_data = {
.get_power = chtdc_ti_pmic_get_power,
.update_power = chtdc_ti_pmic_update_power,
.get_raw_temp = chtdc_ti_pmic_get_raw_temp,
.power_table = chtdc_ti_power_table,
.power_table_count = ARRAY_SIZE(chtdc_ti_power_table),
.thermal_table = chtdc_ti_thermal_table,
.thermal_table_count = ARRAY_SIZE(chtdc_ti_thermal_table),
};
static int chtdc_ti_pmic_opregion_probe(struct platform_device *pdev)
{
struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
int err;
err = intel_pmic_install_opregion_handler(&pdev->dev,
ACPI_HANDLE(pdev->dev.parent), pmic->regmap,
&chtdc_ti_pmic_opregion_data);
if (err < 0)
return err;
/* Re-enumerate devices depending on PMIC */
acpi_walk_dep_device_list(ACPI_HANDLE(pdev->dev.parent));
return 0;
}
static const struct platform_device_id chtdc_ti_pmic_opregion_id_table[] = {
{ .name = "chtdc_ti_region" },
{},
};
static struct platform_driver chtdc_ti_pmic_opregion_driver = {
.probe = chtdc_ti_pmic_opregion_probe,
.driver = {
.name = "cht_dollar_cove_ti_pmic",
},
.id_table = chtdc_ti_pmic_opregion_id_table,
};
module_platform_driver(chtdc_ti_pmic_opregion_driver);
MODULE_DESCRIPTION("Dollar Cove TI PMIC opregion driver");
MODULE_LICENSE("GPL v2");
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