regulator: Regulator driver for the Qualcomm RPM
Driver for regulators exposed by the Resource Power Manager (RPM) found in devices based on Qualcomm 8974 and newer platforms. Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> Acked-by: Andy Gross <agross@codeaurora.org> Tested-by: Tim Bird <tim.bird@sonymobile.com> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Bjorn Andersson
Mark Brown
Родитель
bc0195aad0
Коммит
da65e367b6
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@ -522,6 +522,18 @@ config REGULATOR_QCOM_RPM
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Qualcomm RPM as a module. The module will be named
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"qcom_rpm-regulator".
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config REGULATOR_QCOM_SMD_RPM
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tristate "Qualcomm SMD based RPM regulator driver"
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depends on QCOM_SMD_RPM
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help
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If you say yes to this option, support will be included for the
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regulators exposed by the Resource Power Manager found in Qualcomm
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8974 based devices.
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Say M here if you want to include support for the regulators on the
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Qualcomm RPM as a module. The module will be named
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"qcom_smd-regulator".
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config REGULATOR_QCOM_SPMI
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tristate "Qualcomm SPMI regulator driver"
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depends on SPMI || COMPILE_TEST
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@ -62,6 +62,7 @@ obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
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obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
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obj-$(CONFIG_REGULATOR_MT6397) += mt6397-regulator.o
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obj-$(CONFIG_REGULATOR_QCOM_RPM) += qcom_rpm-regulator.o
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obj-$(CONFIG_REGULATOR_QCOM_SMD_RPM) += qcom_smd-regulator.o
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obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o
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obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
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obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
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@ -0,0 +1,349 @@
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/*
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* Copyright (c) 2015, Sony Mobile Communications AB.
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* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/platform_device.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <linux/regulator/of_regulator.h>
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#include <linux/soc/qcom/smd-rpm.h>
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struct qcom_rpm_reg {
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struct device *dev;
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struct qcom_smd_rpm *rpm;
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u32 type;
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u32 id;
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struct regulator_desc desc;
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int is_enabled;
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int uV;
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};
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struct rpm_regulator_req {
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u32 key;
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u32 nbytes;
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u32 value;
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};
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#define RPM_KEY_SWEN 0x6e657773 /* "swen" */
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#define RPM_KEY_UV 0x00007675 /* "uv" */
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#define RPM_KEY_MA 0x0000616d /* "ma" */
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static int rpm_reg_write_active(struct qcom_rpm_reg *vreg,
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struct rpm_regulator_req *req,
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size_t size)
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{
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return qcom_rpm_smd_write(vreg->rpm,
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QCOM_SMD_RPM_ACTIVE_STATE,
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vreg->type,
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vreg->id,
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req, size);
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}
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static int rpm_reg_enable(struct regulator_dev *rdev)
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{
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struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
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struct rpm_regulator_req req;
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int ret;
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req.key = RPM_KEY_SWEN;
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req.nbytes = sizeof(u32);
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req.value = 1;
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ret = rpm_reg_write_active(vreg, &req, sizeof(req));
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if (!ret)
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vreg->is_enabled = 1;
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return ret;
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}
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static int rpm_reg_is_enabled(struct regulator_dev *rdev)
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{
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struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
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return vreg->is_enabled;
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}
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static int rpm_reg_disable(struct regulator_dev *rdev)
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{
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struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
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struct rpm_regulator_req req;
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int ret;
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req.key = RPM_KEY_SWEN;
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req.nbytes = sizeof(u32);
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req.value = 0;
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ret = rpm_reg_write_active(vreg, &req, sizeof(req));
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if (!ret)
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vreg->is_enabled = 0;
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return ret;
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}
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static int rpm_reg_get_voltage(struct regulator_dev *rdev)
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{
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struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
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return vreg->uV;
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}
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static int rpm_reg_set_voltage(struct regulator_dev *rdev,
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int min_uV,
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int max_uV,
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unsigned *selector)
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{
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struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
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struct rpm_regulator_req req;
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int ret = 0;
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req.key = RPM_KEY_UV;
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req.nbytes = sizeof(u32);
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req.value = min_uV;
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ret = rpm_reg_write_active(vreg, &req, sizeof(req));
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if (!ret)
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vreg->uV = min_uV;
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return ret;
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}
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static int rpm_reg_set_load(struct regulator_dev *rdev, int load_uA)
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{
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struct qcom_rpm_reg *vreg = rdev_get_drvdata(rdev);
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struct rpm_regulator_req req;
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req.key = RPM_KEY_MA;
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req.nbytes = sizeof(u32);
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req.value = load_uA;
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return rpm_reg_write_active(vreg, &req, sizeof(req));
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}
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static const struct regulator_ops rpm_smps_ldo_ops = {
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.enable = rpm_reg_enable,
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.disable = rpm_reg_disable,
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.is_enabled = rpm_reg_is_enabled,
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.get_voltage = rpm_reg_get_voltage,
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.set_voltage = rpm_reg_set_voltage,
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.set_load = rpm_reg_set_load,
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};
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static const struct regulator_ops rpm_switch_ops = {
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.enable = rpm_reg_enable,
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.disable = rpm_reg_disable,
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.is_enabled = rpm_reg_is_enabled,
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};
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static const struct regulator_desc pm8x41_hfsmps = {
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.linear_ranges = (struct regulator_linear_range[]) {
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REGULATOR_LINEAR_RANGE( 375000, 0, 95, 12500),
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REGULATOR_LINEAR_RANGE(1550000, 96, 158, 25000),
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},
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.n_linear_ranges = 2,
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.n_voltages = 159,
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.ops = &rpm_smps_ldo_ops,
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};
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static const struct regulator_desc pm8841_ftsmps = {
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.linear_ranges = (struct regulator_linear_range[]) {
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REGULATOR_LINEAR_RANGE(350000, 0, 184, 5000),
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REGULATOR_LINEAR_RANGE(700000, 185, 339, 10000),
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},
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.n_linear_ranges = 2,
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.n_voltages = 340,
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.ops = &rpm_smps_ldo_ops,
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};
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static const struct regulator_desc pm8941_boost = {
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.linear_ranges = (struct regulator_linear_range[]) {
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REGULATOR_LINEAR_RANGE(4000000, 0, 15, 100000),
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},
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.n_linear_ranges = 1,
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.n_voltages = 16,
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.ops = &rpm_smps_ldo_ops,
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};
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static const struct regulator_desc pm8941_pldo = {
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.linear_ranges = (struct regulator_linear_range[]) {
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REGULATOR_LINEAR_RANGE( 750000, 0, 30, 25000),
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REGULATOR_LINEAR_RANGE(1500000, 31, 99, 50000),
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},
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.n_linear_ranges = 2,
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.n_voltages = 100,
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.ops = &rpm_smps_ldo_ops,
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};
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static const struct regulator_desc pm8941_nldo = {
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.linear_ranges = (struct regulator_linear_range[]) {
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REGULATOR_LINEAR_RANGE(750000, 0, 63, 12500),
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},
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.n_linear_ranges = 1,
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.n_voltages = 64,
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.ops = &rpm_smps_ldo_ops,
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};
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static const struct regulator_desc pm8941_lnldo = {
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.fixed_uV = 1740000,
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.ops = &rpm_smps_ldo_ops,
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};
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static const struct regulator_desc pm8941_switch = {
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.ops = &rpm_switch_ops,
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};
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struct rpm_regulator_data {
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const char *name;
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u32 type;
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u32 id;
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const struct regulator_desc *desc;
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const char *supply;
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};
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static const struct rpm_regulator_data rpm_pm8841_regulators[] = {
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{ "s1", QCOM_SMD_RPM_SMPB, 1, &pm8x41_hfsmps, "vdd_s1" },
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{ "s2", QCOM_SMD_RPM_SMPB, 2, &pm8841_ftsmps, "vdd_s2" },
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{ "s3", QCOM_SMD_RPM_SMPB, 3, &pm8x41_hfsmps, "vdd_s3" },
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{ "s4", QCOM_SMD_RPM_SMPB, 4, &pm8841_ftsmps, "vdd_s4" },
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{ "s5", QCOM_SMD_RPM_SMPB, 5, &pm8841_ftsmps, "vdd_s5" },
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{ "s6", QCOM_SMD_RPM_SMPB, 6, &pm8841_ftsmps, "vdd_s6" },
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{ "s7", QCOM_SMD_RPM_SMPB, 7, &pm8841_ftsmps, "vdd_s7" },
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{ "s8", QCOM_SMD_RPM_SMPB, 8, &pm8841_ftsmps, "vdd_s8" },
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{}
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};
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static const struct rpm_regulator_data rpm_pm8941_regulators[] = {
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{ "s1", QCOM_SMD_RPM_SMPA, 1, &pm8x41_hfsmps, "vdd_s1" },
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{ "s2", QCOM_SMD_RPM_SMPA, 2, &pm8x41_hfsmps, "vdd_s2" },
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{ "s3", QCOM_SMD_RPM_SMPA, 3, &pm8x41_hfsmps, "vdd_s3" },
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{ "s4", QCOM_SMD_RPM_BOOST, 1, &pm8941_boost },
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{ "l1", QCOM_SMD_RPM_LDOA, 1, &pm8941_nldo, "vdd_l1_l3" },
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{ "l2", QCOM_SMD_RPM_LDOA, 2, &pm8941_nldo, "vdd_l2_lvs1_2_3" },
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{ "l3", QCOM_SMD_RPM_LDOA, 3, &pm8941_nldo, "vdd_l1_l3" },
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{ "l4", QCOM_SMD_RPM_LDOA, 4, &pm8941_nldo, "vdd_l4_l11" },
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{ "l5", QCOM_SMD_RPM_LDOA, 5, &pm8941_lnldo, "vdd_l5_l7" },
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{ "l6", QCOM_SMD_RPM_LDOA, 6, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
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{ "l7", QCOM_SMD_RPM_LDOA, 7, &pm8941_lnldo, "vdd_l5_l7" },
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{ "l8", QCOM_SMD_RPM_LDOA, 8, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
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{ "l9", QCOM_SMD_RPM_LDOA, 9, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
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{ "l10", QCOM_SMD_RPM_LDOA, 10, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
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{ "l11", QCOM_SMD_RPM_LDOA, 11, &pm8941_nldo, "vdd_l4_l11" },
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{ "l12", QCOM_SMD_RPM_LDOA, 12, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
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{ "l13", QCOM_SMD_RPM_LDOA, 13, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
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{ "l14", QCOM_SMD_RPM_LDOA, 14, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
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{ "l15", QCOM_SMD_RPM_LDOA, 15, &pm8941_pldo, "vdd_l6_l12_l14_l15" },
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{ "l16", QCOM_SMD_RPM_LDOA, 16, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
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{ "l17", QCOM_SMD_RPM_LDOA, 17, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
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{ "l18", QCOM_SMD_RPM_LDOA, 18, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
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{ "l19", QCOM_SMD_RPM_LDOA, 19, &pm8941_pldo, "vdd_l8_l16_l18_l19" },
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{ "l20", QCOM_SMD_RPM_LDOA, 20, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
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{ "l21", QCOM_SMD_RPM_LDOA, 21, &pm8941_pldo, "vdd_l21" },
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{ "l22", QCOM_SMD_RPM_LDOA, 22, &pm8941_pldo, "vdd_l9_l10_l17_l22" },
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{ "l23", QCOM_SMD_RPM_LDOA, 23, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
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{ "l24", QCOM_SMD_RPM_LDOA, 24, &pm8941_pldo, "vdd_l13_l20_l23_l24" },
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{ "lvs1", QCOM_SMD_RPM_VSA, 1, &pm8941_switch, "vdd_l2_lvs1_2_3" },
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{ "lvs2", QCOM_SMD_RPM_VSA, 2, &pm8941_switch, "vdd_l2_lvs1_2_3" },
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{ "lvs3", QCOM_SMD_RPM_VSA, 3, &pm8941_switch, "vdd_l2_lvs1_2_3" },
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{ "5vs1", QCOM_SMD_RPM_VSA, 4, &pm8941_switch, "vin_5vs" },
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{ "5vs2", QCOM_SMD_RPM_VSA, 5, &pm8941_switch, "vin_5vs" },
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{}
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};
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static const struct of_device_id rpm_of_match[] = {
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{ .compatible = "qcom,rpm-pm8841-regulators", .data = &rpm_pm8841_regulators },
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{ .compatible = "qcom,rpm-pm8941-regulators", .data = &rpm_pm8941_regulators },
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{}
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};
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MODULE_DEVICE_TABLE(of, rpm_of_match);
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static int rpm_reg_probe(struct platform_device *pdev)
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{
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const struct rpm_regulator_data *reg;
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const struct of_device_id *match;
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struct regulator_config config = { };
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struct regulator_dev *rdev;
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struct qcom_rpm_reg *vreg;
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struct qcom_smd_rpm *rpm;
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rpm = dev_get_drvdata(pdev->dev.parent);
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if (!rpm) {
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dev_err(&pdev->dev, "unable to retrieve handle to rpm\n");
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return -ENODEV;
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}
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match = of_match_device(rpm_of_match, &pdev->dev);
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for (reg = match->data; reg->name; reg++) {
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vreg = devm_kzalloc(&pdev->dev, sizeof(*vreg), GFP_KERNEL);
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if (!vreg)
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return -ENOMEM;
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vreg->dev = &pdev->dev;
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vreg->type = reg->type;
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vreg->id = reg->id;
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vreg->rpm = rpm;
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memcpy(&vreg->desc, reg->desc, sizeof(vreg->desc));
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vreg->desc.id = -1;
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vreg->desc.owner = THIS_MODULE;
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vreg->desc.type = REGULATOR_VOLTAGE;
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vreg->desc.name = reg->name;
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vreg->desc.supply_name = reg->supply;
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vreg->desc.of_match = reg->name;
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config.dev = &pdev->dev;
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config.driver_data = vreg;
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rdev = devm_regulator_register(&pdev->dev, &vreg->desc, &config);
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if (IS_ERR(rdev)) {
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dev_err(&pdev->dev, "failed to register %s\n", reg->name);
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return PTR_ERR(rdev);
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}
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}
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return 0;
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}
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static struct platform_driver rpm_reg_driver = {
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.probe = rpm_reg_probe,
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.driver = {
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.name = "qcom_rpm_smd_regulator",
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.of_match_table = rpm_of_match,
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},
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};
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static int __init rpm_reg_init(void)
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{
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return platform_driver_register(&rpm_reg_driver);
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}
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subsys_initcall(rpm_reg_init);
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static void __exit rpm_reg_exit(void)
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{
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platform_driver_unregister(&rpm_reg_driver);
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}
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module_exit(rpm_reg_exit)
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MODULE_DESCRIPTION("Qualcomm RPM regulator driver");
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MODULE_LICENSE("GPL v2");
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