mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
138 lines
3.3 KiB
C
138 lines
3.3 KiB
C
|
/*
|
||
|
* 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");
|