diff options
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/Kconfig | 25 | ||||
| -rw-r--r-- | drivers/regulator/Makefile | 3 | ||||
| -rw-r--r-- | drivers/regulator/pwm-regulator.c | 197 | ||||
| -rw-r--r-- | drivers/regulator/qcom_rpm-regulator.c | 798 | ||||
| -rw-r--r-- | drivers/regulator/st-pwm.c | 190 |
5 files changed, 1016 insertions, 197 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index f6bf208f0fca..72fb9500f410 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig @@ -449,6 +449,25 @@ config REGULATOR_PFUZE100 Say y here to support the regulators found on the Freescale PFUZE100/PFUZE200 PMIC. +config REGULATOR_PWM + tristate "PWM voltage regulator" + depends on PWM + help + This driver supports PWM controlled voltage regulators. PWM + duty cycle can increase or decrease the voltage. + +config REGULATOR_QCOM_RPM + tristate "Qualcomm RPM regulator driver" + depends on MFD_QCOM_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 + 8660, 8960 and 8064 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_rpm-regulator". + config REGULATOR_RC5T583 tristate "RICOH RC5T583 Power regulators" depends on MFD_RC5T583 @@ -494,12 +513,6 @@ config REGULATOR_SKY81452 This driver can also be built as a module. If so, the module will be called sky81452-regulator. -config REGULATOR_ST_PWM - tristate "STMicroelectronics PWM voltage regulator" - depends on ARCH_STI - help - This driver supports ST's PWM controlled voltage regulators. - config REGULATOR_TI_ABB tristate "TI Adaptive Body Bias on-chip LDO" depends on ARCH_OMAP diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index d8206ec63d15..a4d81ec024ea 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile @@ -55,8 +55,10 @@ obj-$(CONFIG_REGULATOR_MAX77693) += max77693.o obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o +obj-$(CONFIG_REGULATOR_QCOM_RPM) += qcom_rpm-regulator.o obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o +obj-$(CONFIG_REGULATOR_PWM) += pwm-regulator.o obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o obj-$(CONFIG_REGULATOR_PBIAS) += pbias-regulator.o obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o @@ -66,7 +68,6 @@ obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o -obj-$(CONFIG_REGULATOR_ST_PWM) += st-pwm.o obj-$(CONFIG_REGULATOR_STW481X_VMMC) += stw481x-vmmc.o obj-$(CONFIG_REGULATOR_TI_ABB) += ti-abb-regulator.o obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o diff --git a/drivers/regulator/pwm-regulator.c b/drivers/regulator/pwm-regulator.c new file mode 100644 index 000000000000..d3f55eaea058 --- /dev/null +++ b/drivers/regulator/pwm-regulator.c @@ -0,0 +1,197 @@ +/* + * Regulator driver for PWM Regulators + * + * Copyright (C) 2014 - STMicroelectronics Inc. + * + * Author: Lee Jones <lee.jones@linaro.org> + * + * 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. + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/machine.h> +#include <linux/regulator/of_regulator.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/pwm.h> + +struct pwm_regulator_data { + struct regulator_desc desc; + struct pwm_voltages *duty_cycle_table; + struct pwm_device *pwm; + bool enabled; + int state; +}; + +struct pwm_voltages { + unsigned int uV; + unsigned int dutycycle; +}; + +static int pwm_regulator_get_voltage_sel(struct regulator_dev *dev) +{ + struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev); + + return drvdata->state; +} + +static int pwm_regulator_set_voltage_sel(struct regulator_dev *dev, + unsigned selector) +{ + struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev); + unsigned int pwm_reg_period; + int dutycycle; + int ret; + + pwm_reg_period = pwm_get_period(drvdata->pwm); + + dutycycle = (pwm_reg_period * + drvdata->duty_cycle_table[selector].dutycycle) / 100; + + ret = pwm_config(drvdata->pwm, dutycycle, pwm_reg_period); + if (ret) { + dev_err(&dev->dev, "Failed to configure PWM\n"); + return ret; + } + + drvdata->state = selector; + + if (!drvdata->enabled) { + ret = pwm_enable(drvdata->pwm); + if (ret) { + dev_err(&dev->dev, "Failed to enable PWM\n"); + return ret; + } + drvdata->enabled = true; + } + + return 0; +} + +static int pwm_regulator_list_voltage(struct regulator_dev *dev, + unsigned selector) +{ + struct pwm_regulator_data *drvdata = rdev_get_drvdata(dev); + + if (selector >= drvdata->desc.n_voltages) + return -EINVAL; + + return drvdata->duty_cycle_table[selector].uV; +} + +static struct regulator_ops pwm_regulator_voltage_ops = { + .set_voltage_sel = pwm_regulator_set_voltage_sel, + .get_voltage_sel = pwm_regulator_get_voltage_sel, + .list_voltage = pwm_regulator_list_voltage, + .map_voltage = regulator_map_voltage_iterate, +}; + +static const struct regulator_desc pwm_regulator_desc = { + .name = "pwm-regulator", + .ops = &pwm_regulator_voltage_ops, + .type = REGULATOR_VOLTAGE, + .owner = THIS_MODULE, + .supply_name = "pwm", +}; + +static int pwm_regulator_probe(struct platform_device *pdev) +{ + struct pwm_regulator_data *drvdata; + struct property *prop; + struct regulator_dev *regulator; + struct regulator_config config = { }; + struct device_node *np = pdev->dev.of_node; + int length, ret; + + if (!np) { + dev_err(&pdev->dev, "Device Tree node missing\n"); + return -EINVAL; + } + + drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); + if (!drvdata) + return -ENOMEM; + + memcpy(&drvdata->desc, &pwm_regulator_desc, sizeof(pwm_regulator_desc)); + + /* determine the number of voltage-table */ + prop = of_find_property(np, "voltage-table", &length); + if (!prop) { + dev_err(&pdev->dev, "No voltage-table\n"); + return -EINVAL; + } + + if ((length < sizeof(*drvdata->duty_cycle_table)) || + (length % sizeof(*drvdata->duty_cycle_table))) { + dev_err(&pdev->dev, "voltage-table length(%d) is invalid\n", + length); + return -EINVAL; + } + + drvdata->desc.n_voltages = length / sizeof(*drvdata->duty_cycle_table); + + drvdata->duty_cycle_table = devm_kzalloc(&pdev->dev, + length, GFP_KERNEL); + if (!drvdata->duty_cycle_table) + return -ENOMEM; + + /* read voltage table from DT property */ + ret = of_property_read_u32_array(np, "voltage-table", + (u32 *)drvdata->duty_cycle_table, + length / sizeof(u32)); + if (ret < 0) { + dev_err(&pdev->dev, "read voltage-table failed\n"); + return ret; + } + + config.init_data = of_get_regulator_init_data(&pdev->dev, np); + if (!config.init_data) + return -ENOMEM; + + config.of_node = np; + config.dev = &pdev->dev; + config.driver_data = drvdata; + + drvdata->pwm = devm_pwm_get(&pdev->dev, NULL); + if (IS_ERR(drvdata->pwm)) { + dev_err(&pdev->dev, "Failed to get PWM\n"); + return PTR_ERR(drvdata->pwm); + } + + regulator = devm_regulator_register(&pdev->dev, + &drvdata->desc, &config); + if (IS_ERR(regulator)) { + dev_err(&pdev->dev, "Failed to register regulator %s\n", + drvdata->desc.name); + return PTR_ERR(regulator); + } + + return 0; +} + +static const struct of_device_id pwm_of_match[] = { + { .compatible = "pwm-regulator" }, + { }, +}; +MODULE_DEVICE_TABLE(of, pwm_of_match); + +static struct platform_driver pwm_regulator_driver = { + .driver = { + .name = "pwm-regulator", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(pwm_of_match), + }, + .probe = pwm_regulator_probe, +}; + +module_platform_driver(pwm_regulator_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Lee Jones <lee.jones@linaro.org>"); +MODULE_DESCRIPTION("PWM Regulator Driver"); +MODULE_ALIAS("platform:pwm-regulator"); diff --git a/drivers/regulator/qcom_rpm-regulator.c b/drivers/regulator/qcom_rpm-regulator.c new file mode 100644 index 000000000000..b55cd5b50ebe --- /dev/null +++ b/drivers/regulator/qcom_rpm-regulator.c @@ -0,0 +1,798 @@ +/* + * 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"); diff --git a/drivers/regulator/st-pwm.c b/drivers/regulator/st-pwm.c deleted file mode 100644 index 5ea78df449f8..000000000000 --- a/drivers/regulator/st-pwm.c +++ /dev/null @@ -1,190 +0,0 @@ -/* - * Regulator driver for ST's PWM Regulators - * - * Copyright (C) 2014 - STMicroelectronics Inc. - * - * Author: Lee Jones <lee.jones@linaro.org> - * - * 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. - */ - -#include <linux/module.h> -#include <linux/init.h> -#include <linux/err.h> -#include <linux/regulator/driver.h> -#include <linux/regulator/machine.h> -#include <linux/regulator/of_regulator.h> -#include <linux/of.h> -#include <linux/of_device.h> -#include <linux/pwm.h> - -#define ST_PWM_REG_PERIOD 8448 - -struct st_pwm_regulator_pdata { - const struct regulator_desc *desc; - struct st_pwm_voltages *duty_cycle_table; -}; - -struct st_pwm_regulator_data { - const struct st_pwm_regulator_pdata *pdata; - struct pwm_device *pwm; - bool enabled; - int state; -}; - -struct st_pwm_voltages { - unsigned int uV; - unsigned int dutycycle; -}; - -static int st_pwm_regulator_get_voltage_sel(struct regulator_dev *dev) -{ - struct st_pwm_regulator_data *drvdata = rdev_get_drvdata(dev); - - return drvdata->state; -} - -static int st_pwm_regulator_set_voltage_sel(struct regulator_dev *dev, - unsigned selector) -{ - struct st_pwm_regulator_data *drvdata = rdev_get_drvdata(dev); - int dutycycle; - int ret; - - dutycycle = (ST_PWM_REG_PERIOD / 100) * - drvdata->pdata->duty_cycle_table[selector].dutycycle; - - ret = pwm_config(drvdata->pwm, dutycycle, ST_PWM_REG_PERIOD); - if (ret) { - dev_err(&dev->dev, "Failed to configure PWM\n"); - return ret; - } - - drvdata->state = selector; - - if (!drvdata->enabled) { - ret = pwm_enable(drvdata->pwm); - if (ret) { - dev_err(&dev->dev, "Failed to enable PWM\n"); - return ret; - } - drvdata->enabled = true; - } - - return 0; -} - -static int st_pwm_regulator_list_voltage(struct regulator_dev *dev, - unsigned selector) -{ - struct st_pwm_regulator_data *drvdata = rdev_get_drvdata(dev); - - if (selector >= dev->desc->n_voltages) - return -EINVAL; - - return drvdata->pdata->duty_cycle_table[selector].uV; -} - -static struct regulator_ops st_pwm_regulator_voltage_ops = { - .set_voltage_sel = st_pwm_regulator_set_voltage_sel, - .get_voltage_sel = st_pwm_regulator_get_voltage_sel, - .list_voltage = st_pwm_regulator_list_voltage, - .map_voltage = regulator_map_voltage_iterate, -}; - -static struct st_pwm_voltages b2105_duty_cycle_table[] = { - { .uV = 1114000, .dutycycle = 0, }, - { .uV = 1095000, .dutycycle = 10, }, - { .uV = 1076000, .dutycycle = 20, }, - { .uV = 1056000, .dutycycle = 30, }, - { .uV = 1036000, .dutycycle = 40, }, - { .uV = 1016000, .dutycycle = 50, }, - /* WARNING: Values above 50% duty-cycle cause boot failures. */ -}; - -static const struct regulator_desc b2105_desc = { - .name = "b2105-pwm-regulator", - .ops = &st_pwm_regulator_voltage_ops, - .type = REGULATOR_VOLTAGE, - .owner = THIS_MODULE, - .n_voltages = ARRAY_SIZE(b2105_duty_cycle_table), - .supply_name = "pwm", -}; - -static const struct st_pwm_regulator_pdata b2105_info = { - .desc = &b2105_desc, - .duty_cycle_table = b2105_duty_cycle_table, -}; - -static const struct of_device_id st_pwm_of_match[] = { - { .compatible = "st,b2105-pwm-regulator", .data = &b2105_info, }, - { }, -}; -MODULE_DEVICE_TABLE(of, st_pwm_of_match); - -static int st_pwm_regulator_probe(struct platform_device *pdev) -{ - struct st_pwm_regulator_data *drvdata; - struct regulator_dev *regulator; - struct regulator_config config = { }; - struct device_node *np = pdev->dev.of_node; - const struct of_device_id *of_match; - - if (!np) { - dev_err(&pdev->dev, "Device Tree node missing\n"); - return -EINVAL; - } - - drvdata = devm_kzalloc(&pdev->dev, sizeof(*drvdata), GFP_KERNEL); - if (!drvdata) - return -ENOMEM; - - of_match = of_match_device(st_pwm_of_match, &pdev->dev); - if (!of_match) { - dev_err(&pdev->dev, "failed to match of device\n"); - return -ENODEV; - } - drvdata->pdata = of_match->data; - - config.init_data = of_get_regulator_init_data(&pdev->dev, np); - if (!config.init_data) - return -ENOMEM; - - config.of_node = np; - config.dev = &pdev->dev; - config.driver_data = drvdata; - - drvdata->pwm = devm_pwm_get(&pdev->dev, NULL); - if (IS_ERR(drvdata->pwm)) { - dev_err(&pdev->dev, "Failed to get PWM\n"); - return PTR_ERR(drvdata->pwm); - } - - regulator = devm_regulator_register(&pdev->dev, - drvdata->pdata->desc, &config); - if (IS_ERR(regulator)) { - dev_err(&pdev->dev, "Failed to register regulator %s\n", - drvdata->pdata->desc->name); - return PTR_ERR(regulator); - } - - return 0; -} - -static struct platform_driver st_pwm_regulator_driver = { - .driver = { - .name = "st-pwm-regulator", - .owner = THIS_MODULE, - .of_match_table = of_match_ptr(st_pwm_of_match), - }, - .probe = st_pwm_regulator_probe, -}; - -module_platform_driver(st_pwm_regulator_driver); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Lee Jones <lee.jones@linaro.org>"); -MODULE_DESCRIPTION("ST PWM Regulator Driver"); -MODULE_ALIAS("platform:st_pwm-regulator"); |