893 lines
21 KiB
C
893 lines
21 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2010
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*
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* License Terms: GNU General Public License v2
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*
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* Authors: Sundar Iyer <sundar.iyer@stericsson.com> for ST-Ericsson
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* Bengt Jonsson <bengt.g.jonsson@stericsson.com> for ST-Ericsson
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*
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* AB8500 peripheral regulators
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*
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* AB8500 supports the following regulators:
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* VAUX1/2/3, VINTCORE, VTVOUT, VUSB, VAUDIO, VAMIC1/2, VDMIC, VANA
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/ab8500.h>
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#include <linux/mfd/abx500.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/ab8500.h>
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/**
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* struct ab8500_regulator_info - ab8500 regulator information
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* @dev: device pointer
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* @desc: regulator description
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* @regulator_dev: regulator device
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* @max_uV: maximum voltage (for variable voltage supplies)
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* @min_uV: minimum voltage (for variable voltage supplies)
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* @fixed_uV: typical voltage (for fixed voltage supplies)
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* @update_bank: bank to control on/off
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* @update_reg: register to control on/off
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* @update_mask: mask to enable/disable regulator
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* @update_val_enable: bits to enable the regulator in normal (high power) mode
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* @voltage_bank: bank to control regulator voltage
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* @voltage_reg: register to control regulator voltage
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* @voltage_mask: mask to control regulator voltage
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* @voltages: supported voltage table
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* @voltages_len: number of supported voltages for the regulator
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* @delay: startup/set voltage delay in us
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*/
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struct ab8500_regulator_info {
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struct device *dev;
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struct regulator_desc desc;
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struct regulator_dev *regulator;
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int max_uV;
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int min_uV;
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int fixed_uV;
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u8 update_bank;
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u8 update_reg;
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u8 update_mask;
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u8 update_val_enable;
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u8 voltage_bank;
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u8 voltage_reg;
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u8 voltage_mask;
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int const *voltages;
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int voltages_len;
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unsigned int delay;
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};
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/* voltage tables for the vauxn/vintcore supplies */
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static const int ldo_vauxn_voltages[] = {
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1100000,
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1200000,
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1300000,
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1400000,
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1500000,
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1800000,
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1850000,
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1900000,
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2500000,
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2650000,
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2700000,
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2750000,
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2800000,
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2900000,
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3000000,
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3300000,
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};
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static const int ldo_vaux3_voltages[] = {
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1200000,
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1500000,
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1800000,
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2100000,
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2500000,
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2750000,
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2790000,
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2910000,
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};
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static const int ldo_vintcore_voltages[] = {
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1200000,
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1225000,
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1250000,
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1275000,
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1300000,
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1325000,
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1350000,
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};
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static int ab8500_regulator_enable(struct regulator_dev *rdev)
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{
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int ret;
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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if (info == NULL) {
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dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
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return -EINVAL;
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}
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ret = abx500_mask_and_set_register_interruptible(info->dev,
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info->update_bank, info->update_reg,
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info->update_mask, info->update_val_enable);
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if (ret < 0)
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dev_err(rdev_get_dev(rdev),
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"couldn't set enable bits for regulator\n");
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dev_vdbg(rdev_get_dev(rdev),
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"%s-enable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
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info->desc.name, info->update_bank, info->update_reg,
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info->update_mask, info->update_val_enable);
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return ret;
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}
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static int ab8500_regulator_disable(struct regulator_dev *rdev)
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{
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int ret;
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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if (info == NULL) {
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dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
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return -EINVAL;
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}
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ret = abx500_mask_and_set_register_interruptible(info->dev,
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info->update_bank, info->update_reg,
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info->update_mask, 0x0);
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if (ret < 0)
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dev_err(rdev_get_dev(rdev),
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"couldn't set disable bits for regulator\n");
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dev_vdbg(rdev_get_dev(rdev),
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"%s-disable (bank, reg, mask, value): 0x%x, 0x%x, 0x%x, 0x%x\n",
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info->desc.name, info->update_bank, info->update_reg,
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info->update_mask, 0x0);
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return ret;
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}
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static int ab8500_regulator_is_enabled(struct regulator_dev *rdev)
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{
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int ret;
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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u8 regval;
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if (info == NULL) {
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dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
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return -EINVAL;
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}
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ret = abx500_get_register_interruptible(info->dev,
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info->update_bank, info->update_reg, ®val);
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if (ret < 0) {
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dev_err(rdev_get_dev(rdev),
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"couldn't read 0x%x register\n", info->update_reg);
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return ret;
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}
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dev_vdbg(rdev_get_dev(rdev),
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"%s-is_enabled (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
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" 0x%x\n",
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info->desc.name, info->update_bank, info->update_reg,
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info->update_mask, regval);
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if (regval & info->update_mask)
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return true;
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else
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return false;
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}
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static int ab8500_list_voltage(struct regulator_dev *rdev, unsigned selector)
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{
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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if (info == NULL) {
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dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
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return -EINVAL;
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}
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/* return the uV for the fixed regulators */
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if (info->fixed_uV)
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return info->fixed_uV;
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if (selector >= info->voltages_len)
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return -EINVAL;
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return info->voltages[selector];
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}
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static int ab8500_regulator_get_voltage(struct regulator_dev *rdev)
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{
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int ret, val;
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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u8 regval;
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if (info == NULL) {
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dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
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return -EINVAL;
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}
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ret = abx500_get_register_interruptible(info->dev,
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info->voltage_bank, info->voltage_reg, ®val);
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if (ret < 0) {
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dev_err(rdev_get_dev(rdev),
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"couldn't read voltage reg for regulator\n");
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return ret;
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}
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dev_vdbg(rdev_get_dev(rdev),
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"%s-get_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
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" 0x%x\n",
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info->desc.name, info->voltage_bank, info->voltage_reg,
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info->voltage_mask, regval);
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/* vintcore has a different layout */
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val = regval & info->voltage_mask;
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if (info->desc.id == AB8500_LDO_INTCORE)
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ret = info->voltages[val >> 0x3];
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else
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ret = info->voltages[val];
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return ret;
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}
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static int ab8500_get_best_voltage_index(struct regulator_dev *rdev,
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int min_uV, int max_uV)
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{
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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int i;
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/* check the supported voltage */
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for (i = 0; i < info->voltages_len; i++) {
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if ((info->voltages[i] >= min_uV) &&
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(info->voltages[i] <= max_uV))
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return i;
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}
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return -EINVAL;
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}
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static int ab8500_regulator_set_voltage(struct regulator_dev *rdev,
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int min_uV, int max_uV,
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unsigned *selector)
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{
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int ret;
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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u8 regval;
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if (info == NULL) {
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dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
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return -EINVAL;
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}
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/* get the appropriate voltages within the range */
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ret = ab8500_get_best_voltage_index(rdev, min_uV, max_uV);
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if (ret < 0) {
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dev_err(rdev_get_dev(rdev),
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"couldn't get best voltage for regulator\n");
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return ret;
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}
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*selector = ret;
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/* set the registers for the request */
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regval = (u8)ret;
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ret = abx500_mask_and_set_register_interruptible(info->dev,
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info->voltage_bank, info->voltage_reg,
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info->voltage_mask, regval);
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if (ret < 0)
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dev_err(rdev_get_dev(rdev),
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"couldn't set voltage reg for regulator\n");
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dev_vdbg(rdev_get_dev(rdev),
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"%s-set_voltage (bank, reg, mask, value): 0x%x, 0x%x, 0x%x,"
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" 0x%x\n",
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info->desc.name, info->voltage_bank, info->voltage_reg,
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info->voltage_mask, regval);
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return ret;
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}
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static int ab8500_regulator_enable_time(struct regulator_dev *rdev)
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{
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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return info->delay;
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}
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static int ab8500_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
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unsigned int old_sel,
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unsigned int new_sel)
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{
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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int ret;
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/* If the regulator isn't on, it won't take time here */
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ret = ab8500_regulator_is_enabled(rdev);
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if (ret < 0)
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return ret;
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if (!ret)
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return 0;
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return info->delay;
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}
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static struct regulator_ops ab8500_regulator_ops = {
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.enable = ab8500_regulator_enable,
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.disable = ab8500_regulator_disable,
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.is_enabled = ab8500_regulator_is_enabled,
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.get_voltage = ab8500_regulator_get_voltage,
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.set_voltage = ab8500_regulator_set_voltage,
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.list_voltage = ab8500_list_voltage,
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.enable_time = ab8500_regulator_enable_time,
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.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
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};
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static int ab8500_fixed_get_voltage(struct regulator_dev *rdev)
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{
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struct ab8500_regulator_info *info = rdev_get_drvdata(rdev);
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if (info == NULL) {
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dev_err(rdev_get_dev(rdev), "regulator info null pointer\n");
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return -EINVAL;
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}
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return info->fixed_uV;
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}
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static struct regulator_ops ab8500_regulator_fixed_ops = {
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.enable = ab8500_regulator_enable,
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.disable = ab8500_regulator_disable,
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.is_enabled = ab8500_regulator_is_enabled,
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.get_voltage = ab8500_fixed_get_voltage,
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.list_voltage = ab8500_list_voltage,
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.enable_time = ab8500_regulator_enable_time,
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.set_voltage_time_sel = ab8500_regulator_set_voltage_time_sel,
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};
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static struct ab8500_regulator_info
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ab8500_regulator_info[AB8500_NUM_REGULATORS] = {
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/*
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* Variable Voltage Regulators
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* name, min mV, max mV,
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* update bank, reg, mask, enable val
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* volt bank, reg, mask, table, table length
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*/
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[AB8500_LDO_AUX1] = {
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.desc = {
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.name = "LDO-AUX1",
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.ops = &ab8500_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_AUX1,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
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},
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.min_uV = 1100000,
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.max_uV = 3300000,
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.update_bank = 0x04,
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.update_reg = 0x09,
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.update_mask = 0x03,
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.update_val_enable = 0x01,
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.voltage_bank = 0x04,
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.voltage_reg = 0x1f,
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.voltage_mask = 0x0f,
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.voltages = ldo_vauxn_voltages,
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.voltages_len = ARRAY_SIZE(ldo_vauxn_voltages),
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},
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[AB8500_LDO_AUX2] = {
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.desc = {
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.name = "LDO-AUX2",
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.ops = &ab8500_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_AUX2,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(ldo_vauxn_voltages),
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},
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.min_uV = 1100000,
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.max_uV = 3300000,
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.update_bank = 0x04,
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.update_reg = 0x09,
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.update_mask = 0x0c,
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.update_val_enable = 0x04,
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.voltage_bank = 0x04,
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.voltage_reg = 0x20,
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.voltage_mask = 0x0f,
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.voltages = ldo_vauxn_voltages,
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.voltages_len = ARRAY_SIZE(ldo_vauxn_voltages),
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},
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[AB8500_LDO_AUX3] = {
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.desc = {
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.name = "LDO-AUX3",
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.ops = &ab8500_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_AUX3,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(ldo_vaux3_voltages),
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},
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.min_uV = 1100000,
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.max_uV = 3300000,
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.update_bank = 0x04,
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.update_reg = 0x0a,
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.update_mask = 0x03,
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.update_val_enable = 0x01,
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.voltage_bank = 0x04,
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.voltage_reg = 0x21,
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.voltage_mask = 0x07,
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.voltages = ldo_vaux3_voltages,
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.voltages_len = ARRAY_SIZE(ldo_vaux3_voltages),
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},
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[AB8500_LDO_INTCORE] = {
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.desc = {
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.name = "LDO-INTCORE",
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.ops = &ab8500_regulator_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_INTCORE,
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.owner = THIS_MODULE,
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.n_voltages = ARRAY_SIZE(ldo_vintcore_voltages),
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},
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.min_uV = 1100000,
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.max_uV = 3300000,
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.update_bank = 0x03,
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.update_reg = 0x80,
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.update_mask = 0x44,
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.update_val_enable = 0x04,
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.voltage_bank = 0x03,
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.voltage_reg = 0x80,
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.voltage_mask = 0x38,
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.voltages = ldo_vintcore_voltages,
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.voltages_len = ARRAY_SIZE(ldo_vintcore_voltages),
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},
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/*
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* Fixed Voltage Regulators
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* name, fixed mV,
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* update bank, reg, mask, enable val
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*/
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[AB8500_LDO_TVOUT] = {
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.desc = {
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.name = "LDO-TVOUT",
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.ops = &ab8500_regulator_fixed_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_TVOUT,
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.owner = THIS_MODULE,
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.n_voltages = 1,
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},
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.delay = 10000,
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.fixed_uV = 2000000,
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.update_bank = 0x03,
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.update_reg = 0x80,
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.update_mask = 0x82,
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.update_val_enable = 0x02,
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},
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[AB8500_LDO_USB] = {
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.desc = {
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.name = "LDO-USB",
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.ops = &ab8500_regulator_fixed_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_USB,
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.owner = THIS_MODULE,
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.n_voltages = 1,
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},
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.fixed_uV = 3300000,
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.update_bank = 0x03,
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.update_reg = 0x82,
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.update_mask = 0x03,
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.update_val_enable = 0x01,
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},
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[AB8500_LDO_AUDIO] = {
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.desc = {
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.name = "LDO-AUDIO",
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.ops = &ab8500_regulator_fixed_ops,
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.type = REGULATOR_VOLTAGE,
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.id = AB8500_LDO_AUDIO,
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.owner = THIS_MODULE,
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.n_voltages = 1,
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},
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.fixed_uV = 2000000,
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.update_bank = 0x03,
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.update_reg = 0x83,
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.update_mask = 0x02,
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.update_val_enable = 0x02,
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},
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[AB8500_LDO_ANAMIC1] = {
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.desc = {
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.name = "LDO-ANAMIC1",
|
|
.ops = &ab8500_regulator_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.id = AB8500_LDO_ANAMIC1,
|
|
.owner = THIS_MODULE,
|
|
.n_voltages = 1,
|
|
},
|
|
.fixed_uV = 2050000,
|
|
.update_bank = 0x03,
|
|
.update_reg = 0x83,
|
|
.update_mask = 0x08,
|
|
.update_val_enable = 0x08,
|
|
},
|
|
[AB8500_LDO_ANAMIC2] = {
|
|
.desc = {
|
|
.name = "LDO-ANAMIC2",
|
|
.ops = &ab8500_regulator_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.id = AB8500_LDO_ANAMIC2,
|
|
.owner = THIS_MODULE,
|
|
.n_voltages = 1,
|
|
},
|
|
.fixed_uV = 2050000,
|
|
.update_bank = 0x03,
|
|
.update_reg = 0x83,
|
|
.update_mask = 0x10,
|
|
.update_val_enable = 0x10,
|
|
},
|
|
[AB8500_LDO_DMIC] = {
|
|
.desc = {
|
|
.name = "LDO-DMIC",
|
|
.ops = &ab8500_regulator_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.id = AB8500_LDO_DMIC,
|
|
.owner = THIS_MODULE,
|
|
.n_voltages = 1,
|
|
},
|
|
.fixed_uV = 1800000,
|
|
.update_bank = 0x03,
|
|
.update_reg = 0x83,
|
|
.update_mask = 0x04,
|
|
.update_val_enable = 0x04,
|
|
},
|
|
[AB8500_LDO_ANA] = {
|
|
.desc = {
|
|
.name = "LDO-ANA",
|
|
.ops = &ab8500_regulator_fixed_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.id = AB8500_LDO_ANA,
|
|
.owner = THIS_MODULE,
|
|
.n_voltages = 1,
|
|
},
|
|
.fixed_uV = 1200000,
|
|
.update_bank = 0x04,
|
|
.update_reg = 0x06,
|
|
.update_mask = 0x0c,
|
|
.update_val_enable = 0x04,
|
|
},
|
|
|
|
|
|
};
|
|
|
|
struct ab8500_reg_init {
|
|
u8 bank;
|
|
u8 addr;
|
|
u8 mask;
|
|
};
|
|
|
|
#define REG_INIT(_id, _bank, _addr, _mask) \
|
|
[_id] = { \
|
|
.bank = _bank, \
|
|
.addr = _addr, \
|
|
.mask = _mask, \
|
|
}
|
|
|
|
static struct ab8500_reg_init ab8500_reg_init[] = {
|
|
/*
|
|
* 0x30, VanaRequestCtrl
|
|
* 0x0C, VpllRequestCtrl
|
|
* 0xc0, VextSupply1RequestCtrl
|
|
*/
|
|
REG_INIT(AB8500_REGUREQUESTCTRL2, 0x03, 0x04, 0xfc),
|
|
/*
|
|
* 0x03, VextSupply2RequestCtrl
|
|
* 0x0c, VextSupply3RequestCtrl
|
|
* 0x30, Vaux1RequestCtrl
|
|
* 0xc0, Vaux2RequestCtrl
|
|
*/
|
|
REG_INIT(AB8500_REGUREQUESTCTRL3, 0x03, 0x05, 0xff),
|
|
/*
|
|
* 0x03, Vaux3RequestCtrl
|
|
* 0x04, SwHPReq
|
|
*/
|
|
REG_INIT(AB8500_REGUREQUESTCTRL4, 0x03, 0x06, 0x07),
|
|
/*
|
|
* 0x08, VanaSysClkReq1HPValid
|
|
* 0x20, Vaux1SysClkReq1HPValid
|
|
* 0x40, Vaux2SysClkReq1HPValid
|
|
* 0x80, Vaux3SysClkReq1HPValid
|
|
*/
|
|
REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID1, 0x03, 0x07, 0xe8),
|
|
/*
|
|
* 0x10, VextSupply1SysClkReq1HPValid
|
|
* 0x20, VextSupply2SysClkReq1HPValid
|
|
* 0x40, VextSupply3SysClkReq1HPValid
|
|
*/
|
|
REG_INIT(AB8500_REGUSYSCLKREQ1HPVALID2, 0x03, 0x08, 0x70),
|
|
/*
|
|
* 0x08, VanaHwHPReq1Valid
|
|
* 0x20, Vaux1HwHPReq1Valid
|
|
* 0x40, Vaux2HwHPReq1Valid
|
|
* 0x80, Vaux3HwHPReq1Valid
|
|
*/
|
|
REG_INIT(AB8500_REGUHWHPREQ1VALID1, 0x03, 0x09, 0xe8),
|
|
/*
|
|
* 0x01, VextSupply1HwHPReq1Valid
|
|
* 0x02, VextSupply2HwHPReq1Valid
|
|
* 0x04, VextSupply3HwHPReq1Valid
|
|
*/
|
|
REG_INIT(AB8500_REGUHWHPREQ1VALID2, 0x03, 0x0a, 0x07),
|
|
/*
|
|
* 0x08, VanaHwHPReq2Valid
|
|
* 0x20, Vaux1HwHPReq2Valid
|
|
* 0x40, Vaux2HwHPReq2Valid
|
|
* 0x80, Vaux3HwHPReq2Valid
|
|
*/
|
|
REG_INIT(AB8500_REGUHWHPREQ2VALID1, 0x03, 0x0b, 0xe8),
|
|
/*
|
|
* 0x01, VextSupply1HwHPReq2Valid
|
|
* 0x02, VextSupply2HwHPReq2Valid
|
|
* 0x04, VextSupply3HwHPReq2Valid
|
|
*/
|
|
REG_INIT(AB8500_REGUHWHPREQ2VALID2, 0x03, 0x0c, 0x07),
|
|
/*
|
|
* 0x20, VanaSwHPReqValid
|
|
* 0x80, Vaux1SwHPReqValid
|
|
*/
|
|
REG_INIT(AB8500_REGUSWHPREQVALID1, 0x03, 0x0d, 0xa0),
|
|
/*
|
|
* 0x01, Vaux2SwHPReqValid
|
|
* 0x02, Vaux3SwHPReqValid
|
|
* 0x04, VextSupply1SwHPReqValid
|
|
* 0x08, VextSupply2SwHPReqValid
|
|
* 0x10, VextSupply3SwHPReqValid
|
|
*/
|
|
REG_INIT(AB8500_REGUSWHPREQVALID2, 0x03, 0x0e, 0x1f),
|
|
/*
|
|
* 0x02, SysClkReq2Valid1
|
|
* ...
|
|
* 0x80, SysClkReq8Valid1
|
|
*/
|
|
REG_INIT(AB8500_REGUSYSCLKREQVALID1, 0x03, 0x0f, 0xfe),
|
|
/*
|
|
* 0x02, SysClkReq2Valid2
|
|
* ...
|
|
* 0x80, SysClkReq8Valid2
|
|
*/
|
|
REG_INIT(AB8500_REGUSYSCLKREQVALID2, 0x03, 0x10, 0xfe),
|
|
/*
|
|
* 0x02, VTVoutEna
|
|
* 0x04, Vintcore12Ena
|
|
* 0x38, Vintcore12Sel
|
|
* 0x40, Vintcore12LP
|
|
* 0x80, VTVoutLP
|
|
*/
|
|
REG_INIT(AB8500_REGUMISC1, 0x03, 0x80, 0xfe),
|
|
/*
|
|
* 0x02, VaudioEna
|
|
* 0x04, VdmicEna
|
|
* 0x08, Vamic1Ena
|
|
* 0x10, Vamic2Ena
|
|
*/
|
|
REG_INIT(AB8500_VAUDIOSUPPLY, 0x03, 0x83, 0x1e),
|
|
/*
|
|
* 0x01, Vamic1_dzout
|
|
* 0x02, Vamic2_dzout
|
|
*/
|
|
REG_INIT(AB8500_REGUCTRL1VAMIC, 0x03, 0x84, 0x03),
|
|
/*
|
|
* 0x0c, VanaRegu
|
|
* 0x03, VpllRegu
|
|
*/
|
|
REG_INIT(AB8500_VPLLVANAREGU, 0x04, 0x06, 0x0f),
|
|
/*
|
|
* 0x01, VrefDDREna
|
|
* 0x02, VrefDDRSleepMode
|
|
*/
|
|
REG_INIT(AB8500_VREFDDR, 0x04, 0x07, 0x03),
|
|
/*
|
|
* 0x03, VextSupply1Regu
|
|
* 0x0c, VextSupply2Regu
|
|
* 0x30, VextSupply3Regu
|
|
* 0x40, ExtSupply2Bypass
|
|
* 0x80, ExtSupply3Bypass
|
|
*/
|
|
REG_INIT(AB8500_EXTSUPPLYREGU, 0x04, 0x08, 0xff),
|
|
/*
|
|
* 0x03, Vaux1Regu
|
|
* 0x0c, Vaux2Regu
|
|
*/
|
|
REG_INIT(AB8500_VAUX12REGU, 0x04, 0x09, 0x0f),
|
|
/*
|
|
* 0x03, Vaux3Regu
|
|
*/
|
|
REG_INIT(AB8500_VRF1VAUX3REGU, 0x04, 0x0a, 0x03),
|
|
/*
|
|
* 0x3f, Vsmps1Sel1
|
|
*/
|
|
REG_INIT(AB8500_VSMPS1SEL1, 0x04, 0x13, 0x3f),
|
|
/*
|
|
* 0x0f, Vaux1Sel
|
|
*/
|
|
REG_INIT(AB8500_VAUX1SEL, 0x04, 0x1f, 0x0f),
|
|
/*
|
|
* 0x0f, Vaux2Sel
|
|
*/
|
|
REG_INIT(AB8500_VAUX2SEL, 0x04, 0x20, 0x0f),
|
|
/*
|
|
* 0x07, Vaux3Sel
|
|
*/
|
|
REG_INIT(AB8500_VRF1VAUX3SEL, 0x04, 0x21, 0x07),
|
|
/*
|
|
* 0x01, VextSupply12LP
|
|
*/
|
|
REG_INIT(AB8500_REGUCTRL2SPARE, 0x04, 0x22, 0x01),
|
|
/*
|
|
* 0x04, Vaux1Disch
|
|
* 0x08, Vaux2Disch
|
|
* 0x10, Vaux3Disch
|
|
* 0x20, Vintcore12Disch
|
|
* 0x40, VTVoutDisch
|
|
* 0x80, VaudioDisch
|
|
*/
|
|
REG_INIT(AB8500_REGUCTRLDISCH, 0x04, 0x43, 0xfc),
|
|
/*
|
|
* 0x02, VanaDisch
|
|
* 0x04, VdmicPullDownEna
|
|
* 0x10, VdmicDisch
|
|
*/
|
|
REG_INIT(AB8500_REGUCTRLDISCH2, 0x04, 0x44, 0x16),
|
|
};
|
|
|
|
static __devinit int ab8500_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
|
|
struct ab8500_platform_data *pdata;
|
|
int i, err;
|
|
|
|
if (!ab8500) {
|
|
dev_err(&pdev->dev, "null mfd parent\n");
|
|
return -EINVAL;
|
|
}
|
|
pdata = dev_get_platdata(ab8500->dev);
|
|
if (!pdata) {
|
|
dev_err(&pdev->dev, "null pdata\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* make sure the platform data has the correct size */
|
|
if (pdata->num_regulator != ARRAY_SIZE(ab8500_regulator_info)) {
|
|
dev_err(&pdev->dev, "Configuration error: size mismatch.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* initialize registers */
|
|
for (i = 0; i < pdata->num_regulator_reg_init; i++) {
|
|
int id;
|
|
u8 value;
|
|
|
|
id = pdata->regulator_reg_init[i].id;
|
|
value = pdata->regulator_reg_init[i].value;
|
|
|
|
/* check for configuration errors */
|
|
if (id >= AB8500_NUM_REGULATOR_REGISTERS) {
|
|
dev_err(&pdev->dev,
|
|
"Configuration error: id outside range.\n");
|
|
return -EINVAL;
|
|
}
|
|
if (value & ~ab8500_reg_init[id].mask) {
|
|
dev_err(&pdev->dev,
|
|
"Configuration error: value outside mask.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* initialize register */
|
|
err = abx500_mask_and_set_register_interruptible(&pdev->dev,
|
|
ab8500_reg_init[id].bank,
|
|
ab8500_reg_init[id].addr,
|
|
ab8500_reg_init[id].mask,
|
|
value);
|
|
if (err < 0) {
|
|
dev_err(&pdev->dev,
|
|
"Failed to initialize 0x%02x, 0x%02x.\n",
|
|
ab8500_reg_init[id].bank,
|
|
ab8500_reg_init[id].addr);
|
|
return err;
|
|
}
|
|
dev_vdbg(&pdev->dev,
|
|
" init: 0x%02x, 0x%02x, 0x%02x, 0x%02x\n",
|
|
ab8500_reg_init[id].bank,
|
|
ab8500_reg_init[id].addr,
|
|
ab8500_reg_init[id].mask,
|
|
value);
|
|
}
|
|
|
|
/* register all regulators */
|
|
for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
|
|
struct ab8500_regulator_info *info = NULL;
|
|
|
|
/* assign per-regulator data */
|
|
info = &ab8500_regulator_info[i];
|
|
info->dev = &pdev->dev;
|
|
|
|
/* fix for hardware before ab8500v2.0 */
|
|
if (abx500_get_chip_id(info->dev) < 0x20) {
|
|
if (info->desc.id == AB8500_LDO_AUX3) {
|
|
info->desc.n_voltages =
|
|
ARRAY_SIZE(ldo_vauxn_voltages);
|
|
info->voltages = ldo_vauxn_voltages;
|
|
info->voltages_len =
|
|
ARRAY_SIZE(ldo_vauxn_voltages);
|
|
info->voltage_mask = 0xf;
|
|
}
|
|
}
|
|
|
|
/* register regulator with framework */
|
|
info->regulator = regulator_register(&info->desc, &pdev->dev,
|
|
&pdata->regulator[i], info, NULL);
|
|
if (IS_ERR(info->regulator)) {
|
|
err = PTR_ERR(info->regulator);
|
|
dev_err(&pdev->dev, "failed to register regulator %s\n",
|
|
info->desc.name);
|
|
/* when we fail, un-register all earlier regulators */
|
|
while (--i >= 0) {
|
|
info = &ab8500_regulator_info[i];
|
|
regulator_unregister(info->regulator);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
dev_vdbg(rdev_get_dev(info->regulator),
|
|
"%s-probed\n", info->desc.name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static __devexit int ab8500_regulator_remove(struct platform_device *pdev)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(ab8500_regulator_info); i++) {
|
|
struct ab8500_regulator_info *info = NULL;
|
|
info = &ab8500_regulator_info[i];
|
|
|
|
dev_vdbg(rdev_get_dev(info->regulator),
|
|
"%s-remove\n", info->desc.name);
|
|
|
|
regulator_unregister(info->regulator);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct platform_driver ab8500_regulator_driver = {
|
|
.probe = ab8500_regulator_probe,
|
|
.remove = __devexit_p(ab8500_regulator_remove),
|
|
.driver = {
|
|
.name = "ab8500-regulator",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
};
|
|
|
|
static int __init ab8500_regulator_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = platform_driver_register(&ab8500_regulator_driver);
|
|
if (ret != 0)
|
|
pr_err("Failed to register ab8500 regulator: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
subsys_initcall(ab8500_regulator_init);
|
|
|
|
static void __exit ab8500_regulator_exit(void)
|
|
{
|
|
platform_driver_unregister(&ab8500_regulator_driver);
|
|
}
|
|
module_exit(ab8500_regulator_exit);
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Sundar Iyer <sundar.iyer@stericsson.com>");
|
|
MODULE_DESCRIPTION("Regulator Driver for ST-Ericsson AB8500 Mixed-Sig PMIC");
|
|
MODULE_ALIAS("platform:ab8500-regulator");
|