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/*
* Intel CHT Whiskey Cove PMIC operation region driver
* Copyright (C) 2017 Hans de Goede <hdegoede@redhat.com>
*
* Based on various non upstream patches to support the CHT Whiskey Cove PMIC:
* Copyright (C) 2013-2015 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/mfd/intel_soc_pmic.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include "intel_pmic.h"
#define CHT_WC_V1P05A_CTRL 0x6e3b
#define CHT_WC_V1P15_CTRL 0x6e3c
#define CHT_WC_V1P05A_VSEL 0x6e3d
#define CHT_WC_V1P15_VSEL 0x6e3e
#define CHT_WC_V1P8A_CTRL 0x6e56
#define CHT_WC_V1P8SX_CTRL 0x6e57
#define CHT_WC_VDDQ_CTRL 0x6e58
#define CHT_WC_V1P2A_CTRL 0x6e59
#define CHT_WC_V1P2SX_CTRL 0x6e5a
#define CHT_WC_V1P8A_VSEL 0x6e5b
#define CHT_WC_VDDQ_VSEL 0x6e5c
#define CHT_WC_V2P8SX_CTRL 0x6e5d
#define CHT_WC_V3P3A_CTRL 0x6e5e
#define CHT_WC_V3P3SD_CTRL 0x6e5f
#define CHT_WC_VSDIO_CTRL 0x6e67
#define CHT_WC_V3P3A_VSEL 0x6e68
#define CHT_WC_VPROG1A_CTRL 0x6e90
#define CHT_WC_VPROG1B_CTRL 0x6e91
#define CHT_WC_VPROG1F_CTRL 0x6e95
#define CHT_WC_VPROG2D_CTRL 0x6e99
#define CHT_WC_VPROG3A_CTRL 0x6e9a
#define CHT_WC_VPROG3B_CTRL 0x6e9b
#define CHT_WC_VPROG4A_CTRL 0x6e9c
#define CHT_WC_VPROG4B_CTRL 0x6e9d
#define CHT_WC_VPROG4C_CTRL 0x6e9e
#define CHT_WC_VPROG4D_CTRL 0x6e9f
#define CHT_WC_VPROG5A_CTRL 0x6ea0
#define CHT_WC_VPROG5B_CTRL 0x6ea1
#define CHT_WC_VPROG6A_CTRL 0x6ea2
#define CHT_WC_VPROG6B_CTRL 0x6ea3
#define CHT_WC_VPROG1A_VSEL 0x6ec0
#define CHT_WC_VPROG1B_VSEL 0x6ec1
#define CHT_WC_V1P8SX_VSEL 0x6ec2
#define CHT_WC_V1P2SX_VSEL 0x6ec3
#define CHT_WC_V1P2A_VSEL 0x6ec4
#define CHT_WC_VPROG1F_VSEL 0x6ec5
#define CHT_WC_VSDIO_VSEL 0x6ec6
#define CHT_WC_V2P8SX_VSEL 0x6ec7
#define CHT_WC_V3P3SD_VSEL 0x6ec8
#define CHT_WC_VPROG2D_VSEL 0x6ec9
#define CHT_WC_VPROG3A_VSEL 0x6eca
#define CHT_WC_VPROG3B_VSEL 0x6ecb
#define CHT_WC_VPROG4A_VSEL 0x6ecc
#define CHT_WC_VPROG4B_VSEL 0x6ecd
#define CHT_WC_VPROG4C_VSEL 0x6ece
#define CHT_WC_VPROG4D_VSEL 0x6ecf
#define CHT_WC_VPROG5A_VSEL 0x6ed0
#define CHT_WC_VPROG5B_VSEL 0x6ed1
#define CHT_WC_VPROG6A_VSEL 0x6ed2
#define CHT_WC_VPROG6B_VSEL 0x6ed3
/*
* Regulator support is based on the non upstream patch:
* "regulator: whiskey_cove: implements Whiskey Cove pmic VRF support"
* https://github.com/intel-aero/meta-intel-aero/blob/master/recipes-kernel/linux/linux-yocto/0019-regulator-whiskey_cove-implements-WhiskeyCove-pmic-V.patch
*/
static struct pmic_table power_table[] = {
{
.address = 0x0,
.reg = CHT_WC_V1P8A_CTRL,
.bit = 0x01,
}, /* V18A */
{
.address = 0x04,
.reg = CHT_WC_V1P8SX_CTRL,
.bit = 0x07,
}, /* V18X */
{
.address = 0x08,
.reg = CHT_WC_VDDQ_CTRL,
.bit = 0x01,
}, /* VDDQ */
{
.address = 0x0c,
.reg = CHT_WC_V1P2A_CTRL,
.bit = 0x07,
}, /* V12A */
{
.address = 0x10,
.reg = CHT_WC_V1P2SX_CTRL,
.bit = 0x07,
}, /* V12X */
{
.address = 0x14,
.reg = CHT_WC_V2P8SX_CTRL,
.bit = 0x07,
}, /* V28X */
{
.address = 0x18,
.reg = CHT_WC_V3P3A_CTRL,
.bit = 0x01,
}, /* V33A */
{
.address = 0x1c,
.reg = CHT_WC_V3P3SD_CTRL,
.bit = 0x07,
}, /* V3SD */
{
.address = 0x20,
.reg = CHT_WC_VSDIO_CTRL,
.bit = 0x07,
}, /* VSD */
/* {
.address = 0x24,
.reg = ??,
.bit = ??,
}, ** VSW2 */
/* {
.address = 0x28,
.reg = ??,
.bit = ??,
}, ** VSW1 */
/* {
.address = 0x2c,
.reg = ??,
.bit = ??,
}, ** VUPY */
/* {
.address = 0x30,
.reg = ??,
.bit = ??,
}, ** VRSO */
{
.address = 0x34,
.reg = CHT_WC_VPROG1A_CTRL,
.bit = 0x07,
}, /* VP1A */
{
.address = 0x38,
.reg = CHT_WC_VPROG1B_CTRL,
.bit = 0x07,
}, /* VP1B */
{
.address = 0x3c,
.reg = CHT_WC_VPROG1F_CTRL,
.bit = 0x07,
}, /* VP1F */
{
.address = 0x40,
.reg = CHT_WC_VPROG2D_CTRL,
.bit = 0x07,
}, /* VP2D */
{
.address = 0x44,
.reg = CHT_WC_VPROG3A_CTRL,
.bit = 0x07,
}, /* VP3A */
{
.address = 0x48,
.reg = CHT_WC_VPROG3B_CTRL,
.bit = 0x07,
}, /* VP3B */
{
.address = 0x4c,
.reg = CHT_WC_VPROG4A_CTRL,
.bit = 0x07,
}, /* VP4A */
{
.address = 0x50,
.reg = CHT_WC_VPROG4B_CTRL,
.bit = 0x07,
}, /* VP4B */
{
.address = 0x54,
.reg = CHT_WC_VPROG4C_CTRL,
.bit = 0x07,
}, /* VP4C */
{
.address = 0x58,
.reg = CHT_WC_VPROG4D_CTRL,
.bit = 0x07,
}, /* VP4D */
{
.address = 0x5c,
.reg = CHT_WC_VPROG5A_CTRL,
.bit = 0x07,
}, /* VP5A */
{
.address = 0x60,
.reg = CHT_WC_VPROG5B_CTRL,
.bit = 0x07,
}, /* VP5B */
{
.address = 0x64,
.reg = CHT_WC_VPROG6A_CTRL,
.bit = 0x07,
}, /* VP6A */
{
.address = 0x68,
.reg = CHT_WC_VPROG6B_CTRL,
.bit = 0x07,
}, /* VP6B */
/* {
.address = 0x6c,
.reg = ??,
.bit = ??,
} ** VP7A */
};
static int intel_cht_wc_pmic_get_power(struct regmap *regmap, int reg,
int bit, u64 *value)
{
int data;
if (regmap_read(regmap, reg, &data))
return -EIO;
*value = (data & bit) ? 1 : 0;
return 0;
}
static int intel_cht_wc_pmic_update_power(struct regmap *regmap, int reg,
int bitmask, bool on)
{
return regmap_update_bits(regmap, reg, bitmask, on ? 1 : 0);
}
/*
* The thermal table and ops are empty, we do not support the Thermal opregion
* (DPTF) due to lacking documentation.
*/
static struct intel_pmic_opregion_data intel_cht_wc_pmic_opregion_data = {
.get_power = intel_cht_wc_pmic_get_power,
.update_power = intel_cht_wc_pmic_update_power,
.power_table = power_table,
.power_table_count = ARRAY_SIZE(power_table),
};
static int intel_cht_wc_pmic_opregion_probe(struct platform_device *pdev)
{
struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
return intel_pmic_install_opregion_handler(&pdev->dev,
ACPI_HANDLE(pdev->dev.parent),
pmic->regmap,
&intel_cht_wc_pmic_opregion_data);
}
static const struct platform_device_id cht_wc_opregion_id_table[] = {
{ .name = "cht_wcove_region" },
{},
};
MODULE_DEVICE_TABLE(platform, cht_wc_opregion_id_table);
static struct platform_driver intel_cht_wc_pmic_opregion_driver = {
.probe = intel_cht_wc_pmic_opregion_probe,
.driver = {
.name = "cht_whiskey_cove_pmic",
},
.id_table = cht_wc_opregion_id_table,
};
module_platform_driver(intel_cht_wc_pmic_opregion_driver);
MODULE_DESCRIPTION("Intel CHT Whiskey Cove PMIC operation region driver");
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>");
MODULE_LICENSE("GPL");
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