799 lines
21 KiB
C
799 lines
21 KiB
C
/*
|
|
* Copyright (c) 2014, Sony Mobile Communications AB.
|
|
* Copyright (c) 2012-2013, The Linux Foundation. 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 and
|
|
* only 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/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/of.h>
|
|
#include <linux/of_device.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/regulator/of_regulator.h>
|
|
#include <linux/mfd/qcom_rpm.h>
|
|
|
|
#include <dt-bindings/mfd/qcom-rpm.h>
|
|
|
|
#define MAX_REQUEST_LEN 2
|
|
|
|
struct request_member {
|
|
int word;
|
|
unsigned int mask;
|
|
int shift;
|
|
};
|
|
|
|
struct rpm_reg_parts {
|
|
struct request_member mV; /* used if voltage is in mV */
|
|
struct request_member uV; /* used if voltage is in uV */
|
|
struct request_member ip; /* peak current in mA */
|
|
struct request_member pd; /* pull down enable */
|
|
struct request_member ia; /* average current in mA */
|
|
struct request_member fm; /* force mode */
|
|
struct request_member pm; /* power mode */
|
|
struct request_member pc; /* pin control */
|
|
struct request_member pf; /* pin function */
|
|
struct request_member enable_state; /* NCP and switch */
|
|
struct request_member comp_mode; /* NCP */
|
|
struct request_member freq; /* frequency: NCP and SMPS */
|
|
struct request_member freq_clk_src; /* clock source: SMPS */
|
|
struct request_member hpm; /* switch: control OCP and SS */
|
|
int request_len;
|
|
};
|
|
|
|
#define FORCE_MODE_IS_2_BITS(reg) \
|
|
(((reg)->parts->fm.mask >> (reg)->parts->fm.shift) == 3)
|
|
|
|
struct qcom_rpm_reg {
|
|
struct qcom_rpm *rpm;
|
|
|
|
struct mutex lock;
|
|
struct device *dev;
|
|
struct regulator_desc desc;
|
|
const struct rpm_reg_parts *parts;
|
|
|
|
int resource;
|
|
u32 val[MAX_REQUEST_LEN];
|
|
|
|
int uV;
|
|
int is_enabled;
|
|
|
|
bool supports_force_mode_auto;
|
|
bool supports_force_mode_bypass;
|
|
};
|
|
|
|
static const struct rpm_reg_parts rpm8660_ldo_parts = {
|
|
.request_len = 2,
|
|
.mV = { 0, 0x00000FFF, 0 },
|
|
.ip = { 0, 0x00FFF000, 12 },
|
|
.fm = { 0, 0x03000000, 24 },
|
|
.pc = { 0, 0x3C000000, 26 },
|
|
.pf = { 0, 0xC0000000, 30 },
|
|
.pd = { 1, 0x00000001, 0 },
|
|
.ia = { 1, 0x00001FFE, 1 },
|
|
};
|
|
|
|
static const struct rpm_reg_parts rpm8660_smps_parts = {
|
|
.request_len = 2,
|
|
.mV = { 0, 0x00000FFF, 0 },
|
|
.ip = { 0, 0x00FFF000, 12 },
|
|
.fm = { 0, 0x03000000, 24 },
|
|
.pc = { 0, 0x3C000000, 26 },
|
|
.pf = { 0, 0xC0000000, 30 },
|
|
.pd = { 1, 0x00000001, 0 },
|
|
.ia = { 1, 0x00001FFE, 1 },
|
|
.freq = { 1, 0x001FE000, 13 },
|
|
.freq_clk_src = { 1, 0x00600000, 21 },
|
|
};
|
|
|
|
static const struct rpm_reg_parts rpm8660_switch_parts = {
|
|
.request_len = 1,
|
|
.enable_state = { 0, 0x00000001, 0 },
|
|
.pd = { 0, 0x00000002, 1 },
|
|
.pc = { 0, 0x0000003C, 2 },
|
|
.pf = { 0, 0x000000C0, 6 },
|
|
.hpm = { 0, 0x00000300, 8 },
|
|
};
|
|
|
|
static const struct rpm_reg_parts rpm8660_ncp_parts = {
|
|
.request_len = 1,
|
|
.mV = { 0, 0x00000FFF, 0 },
|
|
.enable_state = { 0, 0x00001000, 12 },
|
|
.comp_mode = { 0, 0x00002000, 13 },
|
|
.freq = { 0, 0x003FC000, 14 },
|
|
};
|
|
|
|
static const struct rpm_reg_parts rpm8960_ldo_parts = {
|
|
.request_len = 2,
|
|
.uV = { 0, 0x007FFFFF, 0 },
|
|
.pd = { 0, 0x00800000, 23 },
|
|
.pc = { 0, 0x0F000000, 24 },
|
|
.pf = { 0, 0xF0000000, 28 },
|
|
.ip = { 1, 0x000003FF, 0 },
|
|
.ia = { 1, 0x000FFC00, 10 },
|
|
.fm = { 1, 0x00700000, 20 },
|
|
};
|
|
|
|
static const struct rpm_reg_parts rpm8960_smps_parts = {
|
|
.request_len = 2,
|
|
.uV = { 0, 0x007FFFFF, 0 },
|
|
.pd = { 0, 0x00800000, 23 },
|
|
.pc = { 0, 0x0F000000, 24 },
|
|
.pf = { 0, 0xF0000000, 28 },
|
|
.ip = { 1, 0x000003FF, 0 },
|
|
.ia = { 1, 0x000FFC00, 10 },
|
|
.fm = { 1, 0x00700000, 20 },
|
|
.pm = { 1, 0x00800000, 23 },
|
|
.freq = { 1, 0x1F000000, 24 },
|
|
.freq_clk_src = { 1, 0x60000000, 29 },
|
|
};
|
|
|
|
static const struct rpm_reg_parts rpm8960_switch_parts = {
|
|
.request_len = 1,
|
|
.enable_state = { 0, 0x00000001, 0 },
|
|
.pd = { 0, 0x00000002, 1 },
|
|
.pc = { 0, 0x0000003C, 2 },
|
|
.pf = { 0, 0x000003C0, 6 },
|
|
.hpm = { 0, 0x00000C00, 10 },
|
|
};
|
|
|
|
static const struct rpm_reg_parts rpm8960_ncp_parts = {
|
|
.request_len = 1,
|
|
.uV = { 0, 0x007FFFFF, 0 },
|
|
.enable_state = { 0, 0x00800000, 23 },
|
|
.comp_mode = { 0, 0x01000000, 24 },
|
|
.freq = { 0, 0x3E000000, 25 },
|
|
};
|
|
|
|
/*
|
|
* Physically available PMIC regulator voltage ranges
|
|
*/
|
|
static const struct regulator_linear_range pldo_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE( 750000, 0, 59, 12500),
|
|
REGULATOR_LINEAR_RANGE(1500000, 60, 123, 25000),
|
|
REGULATOR_LINEAR_RANGE(3100000, 124, 160, 50000),
|
|
};
|
|
|
|
static const struct regulator_linear_range nldo_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE( 750000, 0, 63, 12500),
|
|
};
|
|
|
|
static const struct regulator_linear_range nldo1200_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE( 375000, 0, 59, 6250),
|
|
REGULATOR_LINEAR_RANGE( 750000, 60, 123, 12500),
|
|
};
|
|
|
|
static const struct regulator_linear_range smps_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE( 375000, 0, 29, 12500),
|
|
REGULATOR_LINEAR_RANGE( 750000, 30, 89, 12500),
|
|
REGULATOR_LINEAR_RANGE(1500000, 90, 153, 25000),
|
|
};
|
|
|
|
static const struct regulator_linear_range ftsmps_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE( 350000, 0, 6, 50000),
|
|
REGULATOR_LINEAR_RANGE( 700000, 7, 63, 12500),
|
|
REGULATOR_LINEAR_RANGE(1500000, 64, 100, 50000),
|
|
};
|
|
|
|
static const struct regulator_linear_range ncp_ranges[] = {
|
|
REGULATOR_LINEAR_RANGE(1500000, 0, 31, 50000),
|
|
};
|
|
|
|
static int rpm_reg_write(struct qcom_rpm_reg *vreg,
|
|
const struct request_member *req,
|
|
const int value)
|
|
{
|
|
if (WARN_ON((value << req->shift) & ~req->mask))
|
|
return -EINVAL;
|
|
|
|
vreg->val[req->word] &= ~req->mask;
|
|
vreg->val[req->word] |= value << req->shift;
|
|
|
|
return qcom_rpm_write(vreg->rpm,
|
|
vreg->resource,
|
|
vreg->val,
|
|
vreg->parts->request_len);
|
|
}
|
|
|
|
static int rpm_reg_set_mV_sel(struct regulator_dev *rdev,
|
|
unsigned selector)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
const struct rpm_reg_parts *parts = vreg->parts;
|
|
const struct request_member *req = &parts->mV;
|
|
int ret = 0;
|
|
int uV;
|
|
|
|
if (req->mask == 0)
|
|
return -EINVAL;
|
|
|
|
uV = regulator_list_voltage_linear_range(rdev, selector);
|
|
if (uV < 0)
|
|
return uV;
|
|
|
|
mutex_lock(&vreg->lock);
|
|
vreg->uV = uV;
|
|
if (vreg->is_enabled)
|
|
ret = rpm_reg_write(vreg, req, vreg->uV / 1000);
|
|
mutex_unlock(&vreg->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rpm_reg_set_uV_sel(struct regulator_dev *rdev,
|
|
unsigned selector)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
const struct rpm_reg_parts *parts = vreg->parts;
|
|
const struct request_member *req = &parts->uV;
|
|
int ret = 0;
|
|
int uV;
|
|
|
|
if (req->mask == 0)
|
|
return -EINVAL;
|
|
|
|
uV = regulator_list_voltage_linear_range(rdev, selector);
|
|
if (uV < 0)
|
|
return uV;
|
|
|
|
mutex_lock(&vreg->lock);
|
|
vreg->uV = uV;
|
|
if (vreg->is_enabled)
|
|
ret = rpm_reg_write(vreg, req, vreg->uV);
|
|
mutex_unlock(&vreg->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rpm_reg_get_voltage(struct regulator_dev *rdev)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
|
|
return vreg->uV;
|
|
}
|
|
|
|
static int rpm_reg_mV_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
const struct rpm_reg_parts *parts = vreg->parts;
|
|
const struct request_member *req = &parts->mV;
|
|
int ret;
|
|
|
|
if (req->mask == 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&vreg->lock);
|
|
ret = rpm_reg_write(vreg, req, vreg->uV / 1000);
|
|
if (!ret)
|
|
vreg->is_enabled = 1;
|
|
mutex_unlock(&vreg->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rpm_reg_uV_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
const struct rpm_reg_parts *parts = vreg->parts;
|
|
const struct request_member *req = &parts->uV;
|
|
int ret;
|
|
|
|
if (req->mask == 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&vreg->lock);
|
|
ret = rpm_reg_write(vreg, req, vreg->uV);
|
|
if (!ret)
|
|
vreg->is_enabled = 1;
|
|
mutex_unlock(&vreg->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rpm_reg_switch_enable(struct regulator_dev *rdev)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
const struct rpm_reg_parts *parts = vreg->parts;
|
|
const struct request_member *req = &parts->enable_state;
|
|
int ret;
|
|
|
|
if (req->mask == 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&vreg->lock);
|
|
ret = rpm_reg_write(vreg, req, 1);
|
|
if (!ret)
|
|
vreg->is_enabled = 1;
|
|
mutex_unlock(&vreg->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rpm_reg_mV_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
const struct rpm_reg_parts *parts = vreg->parts;
|
|
const struct request_member *req = &parts->mV;
|
|
int ret;
|
|
|
|
if (req->mask == 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&vreg->lock);
|
|
ret = rpm_reg_write(vreg, req, 0);
|
|
if (!ret)
|
|
vreg->is_enabled = 0;
|
|
mutex_unlock(&vreg->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rpm_reg_uV_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
const struct rpm_reg_parts *parts = vreg->parts;
|
|
const struct request_member *req = &parts->uV;
|
|
int ret;
|
|
|
|
if (req->mask == 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&vreg->lock);
|
|
ret = rpm_reg_write(vreg, req, 0);
|
|
if (!ret)
|
|
vreg->is_enabled = 0;
|
|
mutex_unlock(&vreg->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rpm_reg_switch_disable(struct regulator_dev *rdev)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
const struct rpm_reg_parts *parts = vreg->parts;
|
|
const struct request_member *req = &parts->enable_state;
|
|
int ret;
|
|
|
|
if (req->mask == 0)
|
|
return -EINVAL;
|
|
|
|
mutex_lock(&vreg->lock);
|
|
ret = rpm_reg_write(vreg, req, 0);
|
|
if (!ret)
|
|
vreg->is_enabled = 0;
|
|
mutex_unlock(&vreg->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int rpm_reg_is_enabled(struct regulator_dev *rdev)
|
|
{
|
|
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
|
|
|
|
return vreg->is_enabled;
|
|
}
|
|
|
|
static struct regulator_ops uV_ops = {
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
|
|
.set_voltage_sel = rpm_reg_set_uV_sel,
|
|
.get_voltage = rpm_reg_get_voltage,
|
|
|
|
.enable = rpm_reg_uV_enable,
|
|
.disable = rpm_reg_uV_disable,
|
|
.is_enabled = rpm_reg_is_enabled,
|
|
};
|
|
|
|
static struct regulator_ops mV_ops = {
|
|
.list_voltage = regulator_list_voltage_linear_range,
|
|
|
|
.set_voltage_sel = rpm_reg_set_mV_sel,
|
|
.get_voltage = rpm_reg_get_voltage,
|
|
|
|
.enable = rpm_reg_mV_enable,
|
|
.disable = rpm_reg_mV_disable,
|
|
.is_enabled = rpm_reg_is_enabled,
|
|
};
|
|
|
|
static struct regulator_ops switch_ops = {
|
|
.enable = rpm_reg_switch_enable,
|
|
.disable = rpm_reg_switch_disable,
|
|
.is_enabled = rpm_reg_is_enabled,
|
|
};
|
|
|
|
/*
|
|
* PM8058 regulators
|
|
*/
|
|
static const struct qcom_rpm_reg pm8058_pldo = {
|
|
.desc.linear_ranges = pldo_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
|
|
.desc.n_voltages = 161,
|
|
.desc.ops = &mV_ops,
|
|
.parts = &rpm8660_ldo_parts,
|
|
.supports_force_mode_auto = false,
|
|
.supports_force_mode_bypass = false,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8058_nldo = {
|
|
.desc.linear_ranges = nldo_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
|
|
.desc.n_voltages = 64,
|
|
.desc.ops = &mV_ops,
|
|
.parts = &rpm8660_ldo_parts,
|
|
.supports_force_mode_auto = false,
|
|
.supports_force_mode_bypass = false,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8058_smps = {
|
|
.desc.linear_ranges = smps_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
|
|
.desc.n_voltages = 154,
|
|
.desc.ops = &mV_ops,
|
|
.parts = &rpm8660_smps_parts,
|
|
.supports_force_mode_auto = false,
|
|
.supports_force_mode_bypass = false,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8058_ncp = {
|
|
.desc.linear_ranges = ncp_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),
|
|
.desc.n_voltages = 32,
|
|
.desc.ops = &mV_ops,
|
|
.parts = &rpm8660_ncp_parts,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8058_switch = {
|
|
.desc.ops = &switch_ops,
|
|
.parts = &rpm8660_switch_parts,
|
|
};
|
|
|
|
/*
|
|
* PM8901 regulators
|
|
*/
|
|
static const struct qcom_rpm_reg pm8901_pldo = {
|
|
.desc.linear_ranges = pldo_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
|
|
.desc.n_voltages = 161,
|
|
.desc.ops = &mV_ops,
|
|
.parts = &rpm8660_ldo_parts,
|
|
.supports_force_mode_auto = false,
|
|
.supports_force_mode_bypass = true,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8901_nldo = {
|
|
.desc.linear_ranges = nldo_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
|
|
.desc.n_voltages = 64,
|
|
.desc.ops = &mV_ops,
|
|
.parts = &rpm8660_ldo_parts,
|
|
.supports_force_mode_auto = false,
|
|
.supports_force_mode_bypass = true,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8901_ftsmps = {
|
|
.desc.linear_ranges = ftsmps_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges),
|
|
.desc.n_voltages = 101,
|
|
.desc.ops = &mV_ops,
|
|
.parts = &rpm8660_smps_parts,
|
|
.supports_force_mode_auto = true,
|
|
.supports_force_mode_bypass = false,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8901_switch = {
|
|
.desc.ops = &switch_ops,
|
|
.parts = &rpm8660_switch_parts,
|
|
};
|
|
|
|
/*
|
|
* PM8921 regulators
|
|
*/
|
|
static const struct qcom_rpm_reg pm8921_pldo = {
|
|
.desc.linear_ranges = pldo_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(pldo_ranges),
|
|
.desc.n_voltages = 161,
|
|
.desc.ops = &uV_ops,
|
|
.parts = &rpm8960_ldo_parts,
|
|
.supports_force_mode_auto = false,
|
|
.supports_force_mode_bypass = true,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8921_nldo = {
|
|
.desc.linear_ranges = nldo_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(nldo_ranges),
|
|
.desc.n_voltages = 64,
|
|
.desc.ops = &uV_ops,
|
|
.parts = &rpm8960_ldo_parts,
|
|
.supports_force_mode_auto = false,
|
|
.supports_force_mode_bypass = true,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8921_nldo1200 = {
|
|
.desc.linear_ranges = nldo1200_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(nldo1200_ranges),
|
|
.desc.n_voltages = 124,
|
|
.desc.ops = &uV_ops,
|
|
.parts = &rpm8960_ldo_parts,
|
|
.supports_force_mode_auto = false,
|
|
.supports_force_mode_bypass = true,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8921_smps = {
|
|
.desc.linear_ranges = smps_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(smps_ranges),
|
|
.desc.n_voltages = 154,
|
|
.desc.ops = &uV_ops,
|
|
.parts = &rpm8960_smps_parts,
|
|
.supports_force_mode_auto = true,
|
|
.supports_force_mode_bypass = false,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8921_ftsmps = {
|
|
.desc.linear_ranges = ftsmps_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(ftsmps_ranges),
|
|
.desc.n_voltages = 101,
|
|
.desc.ops = &uV_ops,
|
|
.parts = &rpm8960_smps_parts,
|
|
.supports_force_mode_auto = true,
|
|
.supports_force_mode_bypass = false,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8921_ncp = {
|
|
.desc.linear_ranges = ncp_ranges,
|
|
.desc.n_linear_ranges = ARRAY_SIZE(ncp_ranges),
|
|
.desc.n_voltages = 32,
|
|
.desc.ops = &uV_ops,
|
|
.parts = &rpm8960_ncp_parts,
|
|
};
|
|
|
|
static const struct qcom_rpm_reg pm8921_switch = {
|
|
.desc.ops = &switch_ops,
|
|
.parts = &rpm8960_switch_parts,
|
|
};
|
|
|
|
static const struct of_device_id rpm_of_match[] = {
|
|
{ .compatible = "qcom,rpm-pm8058-pldo", .data = &pm8058_pldo },
|
|
{ .compatible = "qcom,rpm-pm8058-nldo", .data = &pm8058_nldo },
|
|
{ .compatible = "qcom,rpm-pm8058-smps", .data = &pm8058_smps },
|
|
{ .compatible = "qcom,rpm-pm8058-ncp", .data = &pm8058_ncp },
|
|
{ .compatible = "qcom,rpm-pm8058-switch", .data = &pm8058_switch },
|
|
|
|
{ .compatible = "qcom,rpm-pm8901-pldo", .data = &pm8901_pldo },
|
|
{ .compatible = "qcom,rpm-pm8901-nldo", .data = &pm8901_nldo },
|
|
{ .compatible = "qcom,rpm-pm8901-ftsmps", .data = &pm8901_ftsmps },
|
|
{ .compatible = "qcom,rpm-pm8901-switch", .data = &pm8901_switch },
|
|
|
|
{ .compatible = "qcom,rpm-pm8921-pldo", .data = &pm8921_pldo },
|
|
{ .compatible = "qcom,rpm-pm8921-nldo", .data = &pm8921_nldo },
|
|
{ .compatible = "qcom,rpm-pm8921-nldo1200", .data = &pm8921_nldo1200 },
|
|
{ .compatible = "qcom,rpm-pm8921-smps", .data = &pm8921_smps },
|
|
{ .compatible = "qcom,rpm-pm8921-ftsmps", .data = &pm8921_ftsmps },
|
|
{ .compatible = "qcom,rpm-pm8921-ncp", .data = &pm8921_ncp },
|
|
{ .compatible = "qcom,rpm-pm8921-switch", .data = &pm8921_switch },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, rpm_of_match);
|
|
|
|
static int rpm_reg_set(struct qcom_rpm_reg *vreg,
|
|
const struct request_member *req,
|
|
const int value)
|
|
{
|
|
if (req->mask == 0 || (value << req->shift) & ~req->mask)
|
|
return -EINVAL;
|
|
|
|
vreg->val[req->word] &= ~req->mask;
|
|
vreg->val[req->word] |= value << req->shift;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int rpm_reg_of_parse_freq(struct device *dev, struct qcom_rpm_reg *vreg)
|
|
{
|
|
static const int freq_table[] = {
|
|
19200000, 9600000, 6400000, 4800000, 3840000, 3200000, 2740000,
|
|
2400000, 2130000, 1920000, 1750000, 1600000, 1480000, 1370000,
|
|
1280000, 1200000,
|
|
|
|
};
|
|
const char *key;
|
|
u32 freq;
|
|
int ret;
|
|
int i;
|
|
|
|
key = "qcom,switch-mode-frequency";
|
|
ret = of_property_read_u32(dev->of_node, key, &freq);
|
|
if (ret) {
|
|
dev_err(dev, "regulator requires %s property\n", key);
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(freq_table); i++) {
|
|
if (freq == freq_table[i]) {
|
|
rpm_reg_set(vreg, &vreg->parts->freq, i + 1);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
dev_err(dev, "invalid frequency %d\n", freq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int rpm_reg_probe(struct platform_device *pdev)
|
|
{
|
|
struct regulator_init_data *initdata;
|
|
const struct qcom_rpm_reg *template;
|
|
const struct of_device_id *match;
|
|
struct regulator_config config = { };
|
|
struct regulator_dev *rdev;
|
|
struct qcom_rpm_reg *vreg;
|
|
const char *key;
|
|
u32 force_mode;
|
|
bool pwm;
|
|
u32 val;
|
|
int ret;
|
|
|
|
match = of_match_device(rpm_of_match, &pdev->dev);
|
|
template = match->data;
|
|
|
|
initdata = of_get_regulator_init_data(&pdev->dev, pdev->dev.of_node);
|
|
if (!initdata)
|
|
return -EINVAL;
|
|
|
|
vreg = devm_kmalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
|
|
if (!vreg) {
|
|
dev_err(&pdev->dev, "failed to allocate vreg\n");
|
|
return -ENOMEM;
|
|
}
|
|
memcpy(vreg, template, sizeof(*vreg));
|
|
mutex_init(&vreg->lock);
|
|
vreg->dev = &pdev->dev;
|
|
vreg->desc.id = -1;
|
|
vreg->desc.owner = THIS_MODULE;
|
|
vreg->desc.type = REGULATOR_VOLTAGE;
|
|
vreg->desc.name = pdev->dev.of_node->name;
|
|
|
|
vreg->rpm = dev_get_drvdata(pdev->dev.parent);
|
|
if (!vreg->rpm) {
|
|
dev_err(&pdev->dev, "unable to retrieve handle to rpm\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
key = "reg";
|
|
ret = of_property_read_u32(pdev->dev.of_node, key, &val);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to read %s\n", key);
|
|
return ret;
|
|
}
|
|
vreg->resource = val;
|
|
|
|
if ((vreg->parts->uV.mask || vreg->parts->mV.mask) &&
|
|
(!initdata->constraints.min_uV || !initdata->constraints.max_uV)) {
|
|
dev_err(&pdev->dev, "no voltage specified for regulator\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
key = "bias-pull-down";
|
|
if (of_property_read_bool(pdev->dev.of_node, key)) {
|
|
ret = rpm_reg_set(vreg, &vreg->parts->pd, 1);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "%s is invalid", key);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (vreg->parts->freq.mask) {
|
|
ret = rpm_reg_of_parse_freq(&pdev->dev, vreg);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (vreg->parts->pm.mask) {
|
|
key = "qcom,power-mode-hysteretic";
|
|
pwm = !of_property_read_bool(pdev->dev.of_node, key);
|
|
|
|
ret = rpm_reg_set(vreg, &vreg->parts->pm, pwm);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to set power mode\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (vreg->parts->fm.mask) {
|
|
force_mode = -1;
|
|
|
|
key = "qcom,force-mode";
|
|
ret = of_property_read_u32(pdev->dev.of_node, key, &val);
|
|
if (ret == -EINVAL) {
|
|
val = QCOM_RPM_FORCE_MODE_NONE;
|
|
} else if (ret < 0) {
|
|
dev_err(&pdev->dev, "failed to read %s\n", key);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* If force-mode is encoded as 2 bits then the
|
|
* possible register values are:
|
|
* NONE, LPM, HPM
|
|
* otherwise:
|
|
* NONE, LPM, AUTO, HPM, BYPASS
|
|
*/
|
|
switch (val) {
|
|
case QCOM_RPM_FORCE_MODE_NONE:
|
|
force_mode = 0;
|
|
break;
|
|
case QCOM_RPM_FORCE_MODE_LPM:
|
|
force_mode = 1;
|
|
break;
|
|
case QCOM_RPM_FORCE_MODE_HPM:
|
|
if (FORCE_MODE_IS_2_BITS(vreg))
|
|
force_mode = 2;
|
|
else
|
|
force_mode = 3;
|
|
break;
|
|
case QCOM_RPM_FORCE_MODE_AUTO:
|
|
if (vreg->supports_force_mode_auto)
|
|
force_mode = 2;
|
|
break;
|
|
case QCOM_RPM_FORCE_MODE_BYPASS:
|
|
if (vreg->supports_force_mode_bypass)
|
|
force_mode = 4;
|
|
break;
|
|
}
|
|
|
|
if (force_mode < 0) {
|
|
dev_err(&pdev->dev, "invalid force mode\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = rpm_reg_set(vreg, &vreg->parts->fm, force_mode);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to set force mode\n");
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
config.dev = &pdev->dev;
|
|
config.init_data = initdata;
|
|
config.driver_data = vreg;
|
|
config.of_node = pdev->dev.of_node;
|
|
rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "can't register regulator\n");
|
|
return PTR_ERR(rdev);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver rpm_reg_driver = {
|
|
.probe = rpm_reg_probe,
|
|
.driver = {
|
|
.name = "qcom_rpm_reg",
|
|
.owner = THIS_MODULE,
|
|
.of_match_table = of_match_ptr(rpm_of_match),
|
|
},
|
|
};
|
|
|
|
static int __init rpm_reg_init(void)
|
|
{
|
|
return platform_driver_register(&rpm_reg_driver);
|
|
}
|
|
subsys_initcall(rpm_reg_init);
|
|
|
|
static void __exit rpm_reg_exit(void)
|
|
{
|
|
platform_driver_unregister(&rpm_reg_driver);
|
|
}
|
|
module_exit(rpm_reg_exit)
|
|
|
|
MODULE_DESCRIPTION("Qualcomm RPM regulator driver");
|
|
MODULE_LICENSE("GPL v2");
|