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Merge remote-tracking branches 'regulator/topic/qcom-smd', 'regulator/topic/qcom-spmi', 'regulator/topic/rk808', 'regulator/topic/stub' and 'regulator/topic/tol' into regulator-next

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This commit is contained in:
Mark Brown 2015-08-30 14:40:11 +01:00
commit aaa9b649d0
8 changed files with 838 additions and 24 deletions
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8
Documentation/devicetree/bindings/mfd/rk808.txt
View File

@ -24,6 +24,10 @@ Optional properties:
- vcc10-supply: The input supply for LDO_REG6
- vcc11-supply: The input supply for LDO_REG8
- vcc12-supply: The input supply for SWITCH_REG2
- dvs-gpios: buck1/2 can be controlled by gpio dvs, this is GPIO specifiers
for 2 host gpio's used for dvs. The format of the gpio specifier depends in
the gpio controller. If DVS GPIOs aren't present, voltage changes will happen
very quickly with no slow ramp time.
Regulators: All the regulators of RK808 to be instantiated shall be
listed in a child node named 'regulators'. Each regulator is represented
@ -55,7 +59,9 @@ Example:
interrupt-parent = <&gpio0>;
interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&pmic_int>;
pinctrl-0 = <&pmic_int &dvs_1 &dvs_2>;
dvs-gpios = <&gpio7 11 GPIO_ACTIVE_HIGH>,
<&gpio7 15 GPIO_ACTIVE_HIGH>;
reg = <0x1b>;
rockchip,system-power-controller;
wakeup-source;

60
Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt
View File

@ -91,13 +91,65 @@ see regulator.txt - with additional custom properties described below:
- regulator-initial-mode:
Usage: optional
Value type: <u32>
Descrption: 1 = Set initial mode to high power mode (HPM), also referred
to as NPM. HPM consumes more ground current than LPM, but
Description: 2 = Set initial mode to auto mode (automatically select
between HPM and LPM); not available on boost type
regulators.
1 = Set initial mode to high power mode (HPM), also referred
to as NPM. HPM consumes more ground current than LPM, but
it can source significantly higher load current. HPM is not
available on boost type regulators. For voltage switch type
regulators, HPM implies that over current protection and
soft start are active all the time. 0 = Set initial mode to
low power mode (LPM).
soft start are active all the time.
0 = Set initial mode to low power mode (LPM).
- qcom,ocp-max-retries:
Usage: optional
Value type: <u32>
Description: Maximum number of times to try toggling a voltage switch
off and back on as a result of consecutive over current
events.
- qcom,ocp-retry-delay:
Usage: optional
Value type: <u32>
Description: Time to delay in milliseconds between each voltage switch
toggle after an over current event takes place.
- qcom,pin-ctrl-enable:
Usage: optional
Value type: <u32>
Description: Bit mask specifying which hardware pins should be used to
enable the regulator, if any; supported bits are:
0 = ignore all hardware enable signals
BIT(0) = follow HW0_EN signal
BIT(1) = follow HW1_EN signal
BIT(2) = follow HW2_EN signal
BIT(3) = follow HW3_EN signal
- qcom,pin-ctrl-hpm:
Usage: optional
Value type: <u32>
Description: Bit mask specifying which hardware pins should be used to
force the regulator into high power mode, if any;
supported bits are:
0 = ignore all hardware enable signals
BIT(0) = follow HW0_EN signal
BIT(1) = follow HW1_EN signal
BIT(2) = follow HW2_EN signal
BIT(3) = follow HW3_EN signal
BIT(4) = follow PMIC awake state
- qcom,vs-soft-start-strength:
Usage: optional
Value type: <u32>
Description: This property sets the soft start strength for voltage
switch type regulators; supported values are:
0 = 0.05 uA
1 = 0.25 uA
2 = 0.55 uA
3 = 0.75 uA
Example:

12
drivers/regulator/Kconfig
View File

@ -523,6 +523,18 @@ config REGULATOR_QCOM_RPM
Qualcomm RPM as a module. The module will be named
"qcom_rpm-regulator".
config REGULATOR_QCOM_SMD_RPM
tristate "Qualcomm SMD based RPM regulator driver"
depends on QCOM_SMD_RPM
help
If you say yes to this option, support will be included for the
regulators exposed by the Resource Power Manager found in Qualcomm
8974 based devices.
Say M here if you want to include support for the regulators on the
Qualcomm RPM as a module. The module will be named
"qcom_smd-regulator".
config REGULATOR_QCOM_SPMI
tristate "Qualcomm SPMI regulator driver"
depends on SPMI || COMPILE_TEST

1
drivers/regulator/Makefile
View File

@ -62,6 +62,7 @@ obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
obj-$(CONFIG_REGULATOR_MT6311) += mt6311-regulator.o
obj-$(CONFIG_REGULATOR_MT6397) += mt6397-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_RPM) += qcom_rpm-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_SMD_RPM) += qcom_smd-regulator.o
obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o
obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o

350
drivers/regulator/qcom_smd-regulator.c Normal file
View File

@ -0,0 +1,350 @@
/*
* Copyright (c) 2015, 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/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/of_regulator.h>
#include <linux/soc/qcom/smd-rpm.h>
struct qcom_rpm_reg {
struct device *dev;
struct qcom_smd_rpm *rpm;
u32 type;
u32 id;
struct regulator_desc desc;
int is_enabled;
int uV;
};
struct rpm_regulator_req {
u32 key;
u32 nbytes;
u32 value;
};
#define RPM_KEY_SWEN 0x6e657773 /* "swen" */
#define RPM_KEY_UV 0x00007675 /* "uv" */
#define RPM_KEY_MA 0x0000616d /* "ma" */
static int rpm_reg_write_active(struct qcom_rpm_reg *vreg,
struct rpm_regulator_req *req,
size_t size)
{
return qcom_rpm_smd_write(vreg->rpm,
QCOM_SMD_RPM_ACTIVE_STATE,
vreg->type,
vreg->id,
req, size);
}
static int rpm_reg_enable(struct regulator_dev *rdev)
{
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
struct rpm_regulator_req req;
int ret;
req.key = RPM_KEY_SWEN;
req.nbytes = sizeof(u32);
req.value = 1;
ret = rpm_reg_write_active(vreg, &req, sizeof(req));
if (!ret)
vreg->is_enabled = 1;
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 int rpm_reg_disable(struct regulator_dev *rdev)
{
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
struct rpm_regulator_req req;
int ret;
req.key = RPM_KEY_SWEN;
req.nbytes = sizeof(u32);
req.value = 0;
ret = rpm_reg_write_active(vreg, &req, sizeof(req));
if (!ret)
vreg->is_enabled = 0;
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_set_voltage(struct regulator_dev *rdev,
int min_uV,
int max_uV,
unsigned *selector)
{
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
struct rpm_regulator_req req;
int ret = 0;
req.key = RPM_KEY_UV;
req.nbytes = sizeof(u32);
req.value = min_uV;
ret = rpm_reg_write_active(vreg, &req, sizeof(req));
if (!ret)
vreg->uV = min_uV;
return ret;
}
static int rpm_reg_set_load(struct regulator_dev *rdev, int load_uA)
{
struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
struct rpm_regulator_req req;
req.key = RPM_KEY_MA;
req.nbytes = sizeof(u32);
req.value = load_uA;
return rpm_reg_write_active(vreg, &req, sizeof(req));
}
static const struct regulator_ops rpm_smps_ldo_ops = {
.enable = rpm_reg_enable,
.disable = rpm_reg_disable,
.is_enabled = rpm_reg_is_enabled,
.get_voltage = rpm_reg_get_voltage,
.set_voltage = rpm_reg_set_voltage,
.set_load = rpm_reg_set_load,
};
static const struct regulator_ops rpm_switch_ops = {
.enable = rpm_reg_enable,
.disable = rpm_reg_disable,
.is_enabled = rpm_reg_is_enabled,
};
static const struct regulator_desc pm8x41_hfsmps = {
.linear_ranges = (struct regulator_linear_range[]) {
REGULATOR_LINEAR_RANGE( 375000, 0, 95, 12500),
REGULATOR_LINEAR_RANGE(1550000, 96, 158, 25000),
},
.n_linear_ranges = 2,
.n_voltages = 159,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pm8841_ftsmps = {
.linear_ranges = (struct regulator_linear_range[]) {
REGULATOR_LINEAR_RANGE(350000, 0, 184, 5000),
REGULATOR_LINEAR_RANGE(700000, 185, 339, 10000),
},
.n_linear_ranges = 2,
.n_voltages = 340,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pm8941_boost = {
.linear_ranges = (struct regulator_linear_range[]) {
REGULATOR_LINEAR_RANGE(4000000, 0, 15, 100000),
},
.n_linear_ranges = 1,
.n_voltages = 16,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pm8941_pldo = {
.linear_ranges = (struct regulator_linear_range[]) {
REGULATOR_LINEAR_RANGE( 750000, 0, 30, 25000),
REGULATOR_LINEAR_RANGE(1500000, 31, 99, 50000),
},
.n_linear_ranges = 2,
.n_voltages = 100,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pm8941_nldo = {
.linear_ranges = (struct regulator_linear_range[]) {
REGULATOR_LINEAR_RANGE(750000, 0, 63, 12500),
},
.n_linear_ranges = 1,
.n_voltages = 64,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pm8941_lnldo = {
.fixed_uV = 1740000,
.n_voltages = 1,
.ops = &rpm_smps_ldo_ops,
};
static const struct regulator_desc pm8941_switch = {
.ops = &rpm_switch_ops,
};
struct rpm_regulator_data {
const char *name;
u32 type;
u32 id;
const struct regulator_desc *desc;
const char *supply;
};
static const struct rpm_regulator_data rpm_pm8841_regulators[] = {
{ "s1", QCOM_SMD_RPM_SMPB, 1, &pm8x41_hfsmps, "vdd_s1" },
{ "s2", QCOM_SMD_RPM_SMPB, 2, &pm8841_ftsmps, "vdd_s2" },
{ "s3", QCOM_SMD_RPM_SMPB, 3, &pm8x41_hfsmps, "vdd_s3" },
{ "s4", QCOM_SMD_RPM_SMPB, 4, &pm8841_ftsmps, "vdd_s4" },
{ "s5", QCOM_SMD_RPM_SMPB, 5, &pm8841_ftsmps, "vdd_s5" },
{ "s6", QCOM_SMD_RPM_SMPB, 6, &pm8841_ftsmps, "vdd_s6" },
{ "s7", QCOM_SMD_RPM_SMPB, 7, &pm8841_ftsmps, "vdd_s7" },
{ "s8", QCOM_SMD_RPM_SMPB, 8, &pm8841_ftsmps, "vdd_s8" },
{}
};
static const struct rpm_regulator_data rpm_pm8941_regulators[] = {
{ "s1", QCOM_SMD_RPM_SMPA, 1, &pm8x41_hfsmps, "vdd_s1" },
{ "s2", QCOM_SMD_RPM_SMPA, 2, &pm8x41_hfsmps, "vdd_s2" },
{ "s3", QCOM_SMD_RPM_SMPA, 3, &pm8x41_hfsmps, "vdd_s3" },
{ "s4", QCOM_SMD_RPM_BOOST, 1, &pm8941_boost },
{ "l1", QCOM_SMD_RPM_LDOA, 1, &pm8941_nldo, "vdd_l1_l3" },
{ "l2", QCOM_SMD_RPM_LDOA, 2, &pm8941_nldo, "vdd_l2_lvs1_2_3" },
{ "l3", QCOM_SMD_RPM_LDOA, 3, &pm8941_nldo, "vdd_l1_l3" },
{ "l4", QCOM_SMD_RPM_LDOA, 4, &pm8941_nldo, "vdd_l4_l11" },
{ "l5", QCOM_SMD_RPM_LDOA, 5, &pm8941_lnldo, "vdd_l5_l7" },
{ "l6", QCOM_SMD_RPM_LDOA, 6, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
{ "l7", QCOM_SMD_RPM_LDOA, 7, &pm8941_lnldo, "vdd_l5_l7" },
{ "l8", QCOM_SMD_RPM_LDOA, 8, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
{ "l9", QCOM_SMD_RPM_LDOA, 9, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
{ "l10", QCOM_SMD_RPM_LDOA, 10, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
{ "l11", QCOM_SMD_RPM_LDOA, 11, &pm8941_nldo, "vdd_l4_l11" },
{ "l12", QCOM_SMD_RPM_LDOA, 12, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
{ "l13", QCOM_SMD_RPM_LDOA, 13, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
{ "l14", QCOM_SMD_RPM_LDOA, 14, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
{ "l15", QCOM_SMD_RPM_LDOA, 15, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
{ "l16", QCOM_SMD_RPM_LDOA, 16, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
{ "l17", QCOM_SMD_RPM_LDOA, 17, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
{ "l18", QCOM_SMD_RPM_LDOA, 18, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
{ "l19", QCOM_SMD_RPM_LDOA, 19, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
{ "l20", QCOM_SMD_RPM_LDOA, 20, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
{ "l21", QCOM_SMD_RPM_LDOA, 21, &pm8941_pldo, "vdd_l21" },
{ "l22", QCOM_SMD_RPM_LDOA, 22, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
{ "l23", QCOM_SMD_RPM_LDOA, 23, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
{ "l24", QCOM_SMD_RPM_LDOA, 24, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
{ "lvs1", QCOM_SMD_RPM_VSA, 1, &pm8941_switch, "vdd_l2_lvs1_2_3" },
{ "lvs2", QCOM_SMD_RPM_VSA, 2, &pm8941_switch, "vdd_l2_lvs1_2_3" },
{ "lvs3", QCOM_SMD_RPM_VSA, 3, &pm8941_switch, "vdd_l2_lvs1_2_3" },
{ "5vs1", QCOM_SMD_RPM_VSA, 4, &pm8941_switch, "vin_5vs" },
{ "5vs2", QCOM_SMD_RPM_VSA, 5, &pm8941_switch, "vin_5vs" },
{}
};
static const struct of_device_id rpm_of_match[] = {
{ .compatible = "qcom,rpm-pm8841-regulators", .data = &rpm_pm8841_regulators },
{ .compatible = "qcom,rpm-pm8941-regulators", .data = &rpm_pm8941_regulators },
{}
};
MODULE_DEVICE_TABLE(of, rpm_of_match);
static int rpm_reg_probe(struct platform_device *pdev)
{
const struct rpm_regulator_data *reg;
const struct of_device_id *match;
struct regulator_config config = { };
struct regulator_dev *rdev;
struct qcom_rpm_reg *vreg;
struct qcom_smd_rpm *rpm;
rpm = dev_get_drvdata(pdev->dev.parent);
if (!rpm) {
dev_err(&pdev->dev, "unable to retrieve handle to rpm\n");
return -ENODEV;
}
match = of_match_device(rpm_of_match, &pdev->dev);
for (reg = match->data; reg->name; reg++) {
vreg = devm_kzalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
if (!vreg)
return -ENOMEM;
vreg->dev = &pdev->dev;
vreg->type = reg->type;
vreg->id = reg->id;
vreg->rpm = rpm;
memcpy(&vreg->desc, reg->desc, sizeof(vreg->desc));
vreg->desc.id = -1;
vreg->desc.owner = THIS_MODULE;
vreg->desc.type = REGULATOR_VOLTAGE;
vreg->desc.name = reg->name;
vreg->desc.supply_name = reg->supply;
vreg->desc.of_match = reg->name;
config.dev = &pdev->dev;
config.driver_data = vreg;
rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config);
if (IS_ERR(rdev)) {
dev_err(&pdev->dev, "failed to register %s\n", reg->name);
return PTR_ERR(rdev);
}
}
return 0;
}
static struct platform_driver rpm_reg_driver = {
.probe = rpm_reg_probe,
.driver = {
.name = "qcom_rpm_smd_regulator",
.of_match_table = 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");

203
drivers/regulator/qcom_spmi-regulator.c
View File

@ -26,6 +26,70 @@
#include <linux/regmap.h>
#include <linux/list.h>
/* Pin control enable input pins. */
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_NONE 0x00
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN0 0x01
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN1 0x02
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN2 0x04
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_EN3 0x08
#define SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT 0x10
/* Pin control high power mode input pins. */
#define SPMI_REGULATOR_PIN_CTRL_HPM_NONE 0x00
#define SPMI_REGULATOR_PIN_CTRL_HPM_EN0 0x01
#define SPMI_REGULATOR_PIN_CTRL_HPM_EN1 0x02
#define SPMI_REGULATOR_PIN_CTRL_HPM_EN2 0x04
#define SPMI_REGULATOR_PIN_CTRL_HPM_EN3 0x08
#define SPMI_REGULATOR_PIN_CTRL_HPM_SLEEP_B 0x10
#define SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT 0x20
/*
* Used with enable parameters to specify that hardware default register values
* should be left unaltered.
*/
#define SPMI_REGULATOR_USE_HW_DEFAULT 2
/* Soft start strength of a voltage switch type regulator */
enum spmi_vs_soft_start_str {
SPMI_VS_SOFT_START_STR_0P05_UA = 0,
SPMI_VS_SOFT_START_STR_0P25_UA,
SPMI_VS_SOFT_START_STR_0P55_UA,
SPMI_VS_SOFT_START_STR_0P75_UA,
SPMI_VS_SOFT_START_STR_HW_DEFAULT,
};
/**
* struct spmi_regulator_init_data - spmi-regulator initialization data
* @pin_ctrl_enable: Bit mask specifying which hardware pins should be
* used to enable the regulator, if any
* Value should be an ORing of
* SPMI_REGULATOR_PIN_CTRL_ENABLE_* constants. If
* the bit specified by
* SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT is
* set, then pin control enable hardware registers
* will not be modified.
* @pin_ctrl_hpm: Bit mask specifying which hardware pins should be
* used to force the regulator into high power
* mode, if any
* Value should be an ORing of
* SPMI_REGULATOR_PIN_CTRL_HPM_* constants. If
* the bit specified by
* SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT is
* set, then pin control mode hardware registers
* will not be modified.
* @vs_soft_start_strength: This parameter sets the soft start strength for
* voltage switch type regulators. Its value
* should be one of SPMI_VS_SOFT_START_STR_*. If
* its value is SPMI_VS_SOFT_START_STR_HW_DEFAULT,
* then the soft start strength will be left at its
* default hardware value.
*/
struct spmi_regulator_init_data {
unsigned pin_ctrl_enable;
unsigned pin_ctrl_hpm;
enum spmi_vs_soft_start_str vs_soft_start_strength;
};
/* These types correspond to unique register layouts. */
enum spmi_regulator_logical_type {
SPMI_REGULATOR_LOGICAL_TYPE_SMPS,
@ -458,6 +522,14 @@ static int spmi_regulator_vs_enable(struct regulator_dev *rdev)
return spmi_regulator_common_enable(rdev);
}
static int spmi_regulator_vs_ocp(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 reg = SPMI_VS_OCP_OVERRIDE;
return spmi_vreg_write(vreg, SPMI_VS_REG_OCP, &reg, 1);
}
static int spmi_regulator_common_disable(struct regulator_dev *rdev)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
@ -504,8 +576,7 @@ static int spmi_regulator_select_voltage(struct spmi_regulator *vreg,
* Force uV to be an allowed set point by applying a ceiling function to
* the uV value.
*/
*voltage_sel = (uV - range->min_uV + range->step_uV - 1)
/ range->step_uV;
*voltage_sel = DIV_ROUND_UP(uV - range->min_uV, range->step_uV);
uV = *voltage_sel * range->step_uV + range->min_uV;
if (uV > max_uV) {
@ -792,6 +863,9 @@ static unsigned int spmi_regulator_common_get_mode(struct regulator_dev *rdev)
if (reg & SPMI_COMMON_MODE_HPM_MASK)
return REGULATOR_MODE_NORMAL;
if (reg & SPMI_COMMON_MODE_AUTO_MASK)
return REGULATOR_MODE_FAST;
return REGULATOR_MODE_IDLE;
}
@ -799,11 +873,13 @@ static int
spmi_regulator_common_set_mode(struct regulator_dev *rdev, unsigned int mode)
{
struct spmi_regulator *vreg = rdev_get_drvdata(rdev);
u8 mask = SPMI_COMMON_MODE_HPM_MASK;
u8 mask = SPMI_COMMON_MODE_HPM_MASK | SPMI_COMMON_MODE_AUTO_MASK;
u8 val = 0;
if (mode == REGULATOR_MODE_NORMAL)
val = mask;
val = SPMI_COMMON_MODE_HPM_MASK;
else if (mode == REGULATOR_MODE_FAST)
val = SPMI_COMMON_MODE_AUTO_MASK;
return spmi_vreg_update_bits(vreg, SPMI_COMMON_REG_MODE, val, mask);
}
@ -973,6 +1049,7 @@ static struct regulator_ops spmi_vs_ops = {
.is_enabled = spmi_regulator_common_is_enabled,
.set_pull_down = spmi_regulator_common_set_pull_down,
.set_soft_start = spmi_regulator_common_set_soft_start,
.set_over_current_protection = spmi_regulator_vs_ocp,
};
static struct regulator_ops spmi_boost_ops = {
@ -1203,10 +1280,111 @@ static int spmi_regulator_ftsmps_init_slew_rate(struct spmi_regulator *vreg)
return ret;
}
static int spmi_regulator_init_registers(struct spmi_regulator *vreg,
const struct spmi_regulator_init_data *data)
{
int ret;
enum spmi_regulator_logical_type type;
u8 ctrl_reg[8], reg, mask;
type = vreg->logical_type;
ret = spmi_vreg_read(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
if (ret)
return ret;
/* Set up enable pin control. */
if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS
|| type == SPMI_REGULATOR_LOGICAL_TYPE_LDO
|| type == SPMI_REGULATOR_LOGICAL_TYPE_VS)
&& !(data->pin_ctrl_enable
& SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT)) {
ctrl_reg[SPMI_COMMON_IDX_ENABLE] &=
~SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
ctrl_reg[SPMI_COMMON_IDX_ENABLE] |=
data->pin_ctrl_enable & SPMI_COMMON_ENABLE_FOLLOW_ALL_MASK;
}
/* Set up mode pin control. */
if ((type == SPMI_REGULATOR_LOGICAL_TYPE_SMPS
|| type == SPMI_REGULATOR_LOGICAL_TYPE_LDO)
&& !(data->pin_ctrl_hpm
& SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
ctrl_reg[SPMI_COMMON_IDX_MODE] &=
~SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
ctrl_reg[SPMI_COMMON_IDX_MODE] |=
data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_ALL_MASK;
}
if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS
&& !(data->pin_ctrl_hpm & SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
ctrl_reg[SPMI_COMMON_IDX_MODE] &=
~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
ctrl_reg[SPMI_COMMON_IDX_MODE] |=
data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
}
if ((type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LO_SMPS
|| type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_HO_SMPS
|| type == SPMI_REGULATOR_LOGICAL_TYPE_ULT_LDO)
&& !(data->pin_ctrl_hpm
& SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT)) {
ctrl_reg[SPMI_COMMON_IDX_MODE] &=
~SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
ctrl_reg[SPMI_COMMON_IDX_MODE] |=
data->pin_ctrl_hpm & SPMI_COMMON_MODE_FOLLOW_AWAKE_MASK;
}
/* Write back any control register values that were modified. */
ret = spmi_vreg_write(vreg, SPMI_COMMON_REG_VOLTAGE_RANGE, ctrl_reg, 8);
if (ret)
return ret;
/* Set soft start strength and over current protection for VS. */
if (type == SPMI_REGULATOR_LOGICAL_TYPE_VS) {
if (data->vs_soft_start_strength
!= SPMI_VS_SOFT_START_STR_HW_DEFAULT) {
reg = data->vs_soft_start_strength
& SPMI_VS_SOFT_START_SEL_MASK;
mask = SPMI_VS_SOFT_START_SEL_MASK;
return spmi_vreg_update_bits(vreg,
SPMI_VS_REG_SOFT_START,
reg, mask);
}
}
return 0;
}
static void spmi_regulator_get_dt_config(struct spmi_regulator *vreg,
struct device_node *node, struct spmi_regulator_init_data *data)
{
/*
* Initialize configuration parameters to use hardware default in case
* no value is specified via device tree.
*/
data->pin_ctrl_enable = SPMI_REGULATOR_PIN_CTRL_ENABLE_HW_DEFAULT;
data->pin_ctrl_hpm = SPMI_REGULATOR_PIN_CTRL_HPM_HW_DEFAULT;
data->vs_soft_start_strength = SPMI_VS_SOFT_START_STR_HW_DEFAULT;
/* These bindings are optional, so it is okay if they aren't found. */
of_property_read_u32(node, "qcom,ocp-max-retries",
&vreg->ocp_max_retries);
of_property_read_u32(node, "qcom,ocp-retry-delay",
&vreg->ocp_retry_delay_ms);
of_property_read_u32(node, "qcom,pin-ctrl-enable",
&data->pin_ctrl_enable);
of_property_read_u32(node, "qcom,pin-ctrl-hpm", &data->pin_ctrl_hpm);
of_property_read_u32(node, "qcom,vs-soft-start-strength",
&data->vs_soft_start_strength);
}
static unsigned int spmi_regulator_of_map_mode(unsigned int mode)
{
if (mode)
if (mode == 1)
return REGULATOR_MODE_NORMAL;
if (mode == 2)
return REGULATOR_MODE_FAST;
return REGULATOR_MODE_IDLE;
}
@ -1215,12 +1393,23 @@ static int spmi_regulator_of_parse(struct device_node *node,
const struct regulator_desc *desc,
struct regulator_config *config)
{
struct spmi_regulator_init_data data = { };
struct spmi_regulator *vreg = config->driver_data;
struct device *dev = config->dev;
int ret;
vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES;
vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS;
spmi_regulator_get_dt_config(vreg, node, &data);
if (!vreg->ocp_max_retries)
vreg->ocp_max_retries = SPMI_VS_OCP_DEFAULT_MAX_RETRIES;
if (!vreg->ocp_retry_delay_ms)
vreg->ocp_retry_delay_ms = SPMI_VS_OCP_DEFAULT_RETRY_DELAY_MS;
ret = spmi_regulator_init_registers(vreg, &data);
if (ret) {
dev_err(dev, "common initialization failed, ret=%d\n", ret);
return ret;
}
if (vreg->logical_type == SPMI_REGULATOR_LOGICAL_TYPE_FTSMPS) {
ret = spmi_regulator_ftsmps_init_slew_rate(vreg);

212
drivers/regulator/rk808-regulator.c
View File

@ -16,12 +16,16 @@
* more details.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/mfd/rk808.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/mfd/rk808.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/of_regulator.h>
#include <linux/gpio/consumer.h>
/* Field Definitions */
#define RK808_BUCK_VSEL_MASK 0x3f
@ -36,12 +40,25 @@
#define RK808_RAMP_RATE_6MV_PER_US (2 << RK808_RAMP_RATE_OFFSET)
#define RK808_RAMP_RATE_10MV_PER_US (3 << RK808_RAMP_RATE_OFFSET)
#define RK808_DVS2_POL BIT(2)
#define RK808_DVS1_POL BIT(1)
/* Offset from XXX_ON_VSEL to XXX_SLP_VSEL */
#define RK808_SLP_REG_OFFSET 1
/* Offset from XXX_ON_VSEL to XXX_DVS_VSEL */
#define RK808_DVS_REG_OFFSET 2
/* Offset from XXX_EN_REG to SLEEP_SET_OFF_XXX */
#define RK808_SLP_SET_OFF_REG_OFFSET 2
/* max steps for increase voltage of Buck1/2, equal 100mv*/
#define MAX_STEPS_ONE_TIME 8
struct rk808_regulator_data {
struct gpio_desc *dvs_gpio[2];
};
static const int rk808_buck_config_regs[] = {
RK808_BUCK1_CONFIG_REG,
RK808_BUCK2_CONFIG_REG,
@ -70,6 +87,131 @@ static const struct regulator_linear_range rk808_ldo6_voltage_ranges[] = {
REGULATOR_LINEAR_RANGE(800000, 0, 17, 100000),
};
static int rk808_buck1_2_get_voltage_sel_regmap(struct regulator_dev *rdev)
{
struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev);
int id = rdev->desc->id - RK808_ID_DCDC1;
struct gpio_desc *gpio = pdata->dvs_gpio[id];
unsigned int val;
int ret;
if (!gpio || gpiod_get_value(gpio) == 0)
return regulator_get_voltage_sel_regmap(rdev);
ret = regmap_read(rdev->regmap,
rdev->desc->vsel_reg + RK808_DVS_REG_OFFSET,
&val);
if (ret != 0)
return ret;
val &= rdev->desc->vsel_mask;
val >>= ffs(rdev->desc->vsel_mask) - 1;
return val;
}
static int rk808_buck1_2_i2c_set_voltage_sel(struct regulator_dev *rdev,
unsigned sel)
{
int ret, delta_sel;
unsigned int old_sel, tmp, val, mask = rdev->desc->vsel_mask;
ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &val);
if (ret != 0)
return ret;
tmp = val & ~mask;
old_sel = val & mask;
old_sel >>= ffs(mask) - 1;
delta_sel = sel - old_sel;
/*
* If directly modify the register to change the voltage, we will face
* the risk of overshoot. Put it into a multi-step, can effectively
* avoid this problem, a step is 100mv here.
*/
while (delta_sel > MAX_STEPS_ONE_TIME) {
old_sel += MAX_STEPS_ONE_TIME;
val = old_sel << (ffs(mask) - 1);
val |= tmp;
/*
* i2c is 400kHz (2.5us per bit) and we must transmit _at least_
* 3 bytes (24 bits) plus start and stop so 26 bits. So we've
* got more than 65 us between each voltage change and thus
* won't ramp faster than ~1500 uV / us.
*/
ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, val);
delta_sel = sel - old_sel;
}
sel <<= ffs(mask) - 1;
val = tmp | sel;
ret = regmap_write(rdev->regmap, rdev->desc->vsel_reg, val);
/*
* When we change the voltage register directly, the ramp rate is about
* 100000uv/us, wait 1us to make sure the target voltage to be stable,
* so we needn't wait extra time after that.
*/
udelay(1);
return ret;
}
static int rk808_buck1_2_set_voltage_sel(struct regulator_dev *rdev,
unsigned sel)
{
struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev);
int id = rdev->desc->id - RK808_ID_DCDC1;
struct gpio_desc *gpio = pdata->dvs_gpio[id];
unsigned int reg = rdev->desc->vsel_reg;
unsigned old_sel;
int ret, gpio_level;
if (!gpio)
return rk808_buck1_2_i2c_set_voltage_sel(rdev, sel);
gpio_level = gpiod_get_value(gpio);
if (gpio_level == 0) {
reg += RK808_DVS_REG_OFFSET;
ret = regmap_read(rdev->regmap, rdev->desc->vsel_reg, &old_sel);
} else {
ret = regmap_read(rdev->regmap,
reg + RK808_DVS_REG_OFFSET,
&old_sel);
}
if (ret != 0)
return ret;
sel <<= ffs(rdev->desc->vsel_mask) - 1;
sel |= old_sel & ~rdev->desc->vsel_mask;
ret = regmap_write(rdev->regmap, reg, sel);
if (ret)
return ret;
gpiod_set_value(gpio, !gpio_level);
return ret;
}
static int rk808_buck1_2_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int old_selector,
unsigned int new_selector)
{
struct rk808_regulator_data *pdata = rdev_get_drvdata(rdev);
int id = rdev->desc->id - RK808_ID_DCDC1;
struct gpio_desc *gpio = pdata->dvs_gpio[id];
/* if there is no dvs1/2 pin, we don't need wait extra time here. */
if (!gpio)
return 0;
return regulator_set_voltage_time_sel(rdev, old_selector, new_selector);
}
static int rk808_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
{
unsigned int ramp_value = RK808_RAMP_RATE_10MV_PER_US;
@ -137,8 +279,9 @@ static int rk808_set_suspend_disable(struct regulator_dev *rdev)
static struct regulator_ops rk808_buck1_2_ops = {
.list_voltage = regulator_list_voltage_linear_range,
.map_voltage = regulator_map_voltage_linear_range,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = rk808_buck1_2_get_voltage_sel_regmap,
.set_voltage_sel = rk808_buck1_2_set_voltage_sel,
.set_voltage_time_sel = rk808_buck1_2_set_voltage_time_sel,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,
@ -380,25 +523,69 @@ static struct of_regulator_match rk808_reg_matches[] = {
[RK808_ID_SWITCH2] = { .name = "SWITCH_REG2" },
};
static int rk808_regulator_dt_parse_pdata(struct device *dev,
struct device *client_dev,
struct regmap *map,
struct rk808_regulator_data *pdata)
{
struct device_node *np;
int tmp, ret, i;
np = of_get_child_by_name(client_dev->of_node, "regulators");
if (!np)
return -ENXIO;
ret = of_regulator_match(dev, np, rk808_reg_matches,
RK808_NUM_REGULATORS);
if (ret < 0)
goto dt_parse_end;
for (i = 0; i < ARRAY_SIZE(pdata->dvs_gpio); i++) {
pdata->dvs_gpio[i] =
devm_gpiod_get_index_optional(client_dev, "dvs", i,
GPIOD_OUT_LOW);
if (IS_ERR(pdata->dvs_gpio[i])) {
ret = PTR_ERR(pdata->dvs_gpio[i]);
dev_err(dev, "failed to get dvs%d gpio (%d)\n", i, ret);
goto dt_parse_end;
}
if (!pdata->dvs_gpio[i]) {
dev_warn(dev, "there is no dvs%d gpio\n", i);
continue;
}
tmp = i ? RK808_DVS2_POL : RK808_DVS1_POL;
ret = regmap_update_bits(map, RK808_IO_POL_REG, tmp,
gpiod_is_active_low(pdata->dvs_gpio[i]) ?
0 : tmp);
}
dt_parse_end:
of_node_put(np);
return ret;
}
static int rk808_regulator_probe(struct platform_device *pdev)
{
struct rk808 *rk808 = dev_get_drvdata(pdev->dev.parent);
struct i2c_client *client = rk808->i2c;
struct device_node *reg_np;
struct regulator_config config = {};
struct regulator_dev *rk808_rdev;
struct rk808_regulator_data *pdata;
int ret, i;
reg_np = of_get_child_by_name(client->dev.of_node, "regulators");
if (!reg_np)
return -ENXIO;
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
ret = of_regulator_match(&pdev->dev, reg_np, rk808_reg_matches,
RK808_NUM_REGULATORS);
of_node_put(reg_np);
ret = rk808_regulator_dt_parse_pdata(&pdev->dev, &client->dev,
rk808->regmap, pdata);
if (ret < 0)
return ret;
platform_set_drvdata(pdev, pdata);
/* Instantiate the regulators */
for (i = 0; i < RK808_NUM_REGULATORS; i++) {
if (!rk808_reg_matches[i].init_data ||
@ -406,7 +593,7 @@ static int rk808_regulator_probe(struct platform_device *pdev)
continue;
config.dev = &client->dev;
config.driver_data = rk808;
config.driver_data = pdata;
config.regmap = rk808->regmap;
config.of_node = rk808_reg_matches[i].of_node;
config.init_data = rk808_reg_matches[i].init_data;
@ -427,6 +614,7 @@ static struct platform_driver rk808_regulator_driver = {
.probe = rk808_regulator_probe,
.driver = {
.name = "rk808-regulator",
.owner = THIS_MODULE,
},
};

16
include/linux/regulator/consumer.h
View File

@ -550,8 +550,24 @@ static inline int regulator_count_voltages(struct regulator *regulator)
{
return 0;
}
static inline int regulator_list_voltage(struct regulator *regulator, unsigned selector)
{
return -EINVAL;
}
#endif
static inline int regulator_set_voltage_triplet(struct regulator *regulator,
int min_uV, int target_uV,
int max_uV)
{
if (regulator_set_voltage(regulator, target_uV, max_uV) == 0)
return 0;
return regulator_set_voltage(regulator, min_uV, max_uV);
}
static inline int regulator_set_voltage_tol(struct regulator *regulator,
int new_uV, int tol_uV)
{