2020-08-17 07:10:45 +00:00
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// SPDX-License-Identifier: GPL-2.0
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2020-08-17 07:10:42 +00:00
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/*
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* Device driver for regulators in Hisi IC
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*
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* Copyright (c) 2013 Linaro Ltd.
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* Copyright (c) 2011 Hisilicon.
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*
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* Guodong Xu <guodong.xu@linaro.org>
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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 as
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* 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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*/
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#include <linux/slab.h>
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/err.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_address.h>
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#include <linux/regmap.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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2020-08-17 07:10:46 +00:00
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#include <linux/mfd/hi6421-spmi-pmic.h>
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2020-08-17 07:10:42 +00:00
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#include <linux/delay.h>
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#include <linux/time.h>
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#include <linux/version.h>
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#include <linux/seq_file.h>
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#include <linux/uaccess.h>
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#include <linux/spmi.h>
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struct hisi_regulator_register_info {
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u32 ctrl_reg;
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u32 enable_mask;
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u32 eco_mode_mask;
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u32 vset_reg;
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u32 vset_mask;
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};
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struct hisi_regulator {
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const char *name;
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struct hisi_regulator_register_info register_info;
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u32 off_on_delay;
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u32 eco_uA;
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struct regulator_desc rdesc;
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2020-08-17 07:10:46 +00:00
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struct hisi_pmic *pmic;
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2020-08-17 07:10:42 +00:00
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};
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static DEFINE_MUTEX(enable_mutex);
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/* helper function to ensure when it returns it is at least 'delay_us'
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* microseconds after 'since'.
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*/
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static int hisi_regulator_is_enabled(struct regulator_dev *dev)
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{
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u32 reg_val;
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struct hisi_regulator *sreg = rdev_get_drvdata(dev);
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2020-08-17 07:10:46 +00:00
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struct hisi_pmic *pmic = sreg->pmic;
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2020-08-17 07:10:42 +00:00
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reg_val = hisi_pmic_read(pmic, sreg->register_info.ctrl_reg);
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2020-08-17 07:10:45 +00:00
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pr_debug("<[%s]: ctrl_reg=0x%x,enable_state=%d>\n",
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__func__, sreg->register_info.ctrl_reg,
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(reg_val & sreg->register_info.enable_mask));
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2020-08-17 07:10:42 +00:00
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return ((reg_val & sreg->register_info.enable_mask) != 0);
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}
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static int hisi_regulator_enable(struct regulator_dev *dev)
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{
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struct hisi_regulator *sreg = rdev_get_drvdata(dev);
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2020-08-17 07:10:46 +00:00
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struct hisi_pmic *pmic = sreg->pmic;
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2020-08-17 07:10:42 +00:00
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/* keep a distance of off_on_delay from last time disabled */
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2020-08-17 07:10:44 +00:00
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usleep_range(sreg->off_on_delay, sreg->off_on_delay + 1000);
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2020-08-17 07:10:42 +00:00
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2020-08-17 07:10:43 +00:00
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pr_debug("<[%s]: off_on_delay=%dus>\n", __func__, sreg->off_on_delay);
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2020-08-17 07:10:42 +00:00
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/* cannot enable more than one regulator at one time */
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mutex_lock(&enable_mutex);
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2020-08-17 07:10:44 +00:00
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usleep_range(HISI_REGS_ENA_PROTECT_TIME,
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HISI_REGS_ENA_PROTECT_TIME + 1000);
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2020-08-17 07:10:42 +00:00
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/* set enable register */
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hisi_pmic_rmw(pmic, sreg->register_info.ctrl_reg,
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2020-08-17 07:10:45 +00:00
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sreg->register_info.enable_mask,
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2020-08-17 07:10:42 +00:00
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sreg->register_info.enable_mask);
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2020-08-17 07:10:45 +00:00
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pr_debug("<[%s]: ctrl_reg=0x%x,enable_mask=0x%x>\n",
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__func__, sreg->register_info.ctrl_reg,
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sreg->register_info.enable_mask);
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2020-08-17 07:10:42 +00:00
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mutex_unlock(&enable_mutex);
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return 0;
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}
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static int hisi_regulator_disable(struct regulator_dev *dev)
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{
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struct hisi_regulator *sreg = rdev_get_drvdata(dev);
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2020-08-17 07:10:46 +00:00
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struct hisi_pmic *pmic = sreg->pmic;
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2020-08-17 07:10:42 +00:00
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/* set enable register to 0 */
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hisi_pmic_rmw(pmic, sreg->register_info.ctrl_reg,
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2020-08-17 07:10:45 +00:00
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sreg->register_info.enable_mask, 0);
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2020-08-17 07:10:42 +00:00
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return 0;
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}
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static int hisi_regulator_get_voltage(struct regulator_dev *dev)
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{
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struct hisi_regulator *sreg = rdev_get_drvdata(dev);
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2020-08-17 07:10:46 +00:00
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struct hisi_pmic *pmic = sreg->pmic;
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2020-08-17 07:10:42 +00:00
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u32 reg_val, selector;
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/* get voltage selector */
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reg_val = hisi_pmic_read(pmic, sreg->register_info.vset_reg);
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2020-08-17 07:10:45 +00:00
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pr_debug("<[%s]: vset_reg=0x%x>\n",
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__func__, sreg->register_info.vset_reg);
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2020-08-17 07:10:42 +00:00
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selector = (reg_val & sreg->register_info.vset_mask) >>
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(ffs(sreg->register_info.vset_mask) - 1);
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return sreg->rdesc.ops->list_voltage(dev, selector);
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}
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static int hisi_regulator_set_voltage(struct regulator_dev *dev,
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2020-08-17 07:10:45 +00:00
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int min_uV, int max_uV, unsigned int *selector)
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2020-08-17 07:10:42 +00:00
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{
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struct hisi_regulator *sreg = rdev_get_drvdata(dev);
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2020-08-17 07:10:46 +00:00
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struct hisi_pmic *pmic = sreg->pmic;
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2020-08-17 07:10:42 +00:00
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u32 vsel;
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int ret = 0;
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for (vsel = 0; vsel < sreg->rdesc.n_voltages; vsel++) {
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int uV = sreg->rdesc.volt_table[vsel];
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/* Break at the first in-range value */
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if (min_uV <= uV && uV <= max_uV)
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break;
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}
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/* unlikely to happen. sanity test done by regulator core */
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if (unlikely(vsel == sreg->rdesc.n_voltages))
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return -EINVAL;
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*selector = vsel;
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/* set voltage selector */
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hisi_pmic_rmw(pmic, sreg->register_info.vset_reg,
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2020-08-17 07:10:45 +00:00
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sreg->register_info.vset_mask,
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2020-08-17 07:10:42 +00:00
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vsel << (ffs(sreg->register_info.vset_mask) - 1));
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2020-08-17 07:10:45 +00:00
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pr_debug("<[%s]: vset_reg=0x%x, vset_mask=0x%x, value=0x%x>\n",
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__func__,
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sreg->register_info.vset_reg,
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sreg->register_info.vset_mask,
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vsel << (ffs(sreg->register_info.vset_mask) - 1));
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2020-08-17 07:10:42 +00:00
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return ret;
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}
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static unsigned int hisi_regulator_get_mode(struct regulator_dev *dev)
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{
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struct hisi_regulator *sreg = rdev_get_drvdata(dev);
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2020-08-17 07:10:46 +00:00
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struct hisi_pmic *pmic = sreg->pmic;
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2020-08-17 07:10:42 +00:00
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u32 reg_val;
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reg_val = hisi_pmic_read(pmic, sreg->register_info.ctrl_reg);
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2020-08-17 07:10:45 +00:00
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pr_debug("<[%s]: reg_val=%d, ctrl_reg=0x%x, eco_mode_mask=0x%x>\n",
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__func__, reg_val,
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sreg->register_info.ctrl_reg,
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sreg->register_info.eco_mode_mask);
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2020-08-17 07:10:42 +00:00
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if (reg_val & sreg->register_info.eco_mode_mask)
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return REGULATOR_MODE_IDLE;
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else
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return REGULATOR_MODE_NORMAL;
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}
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static int hisi_regulator_set_mode(struct regulator_dev *dev,
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2020-08-17 07:10:45 +00:00
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unsigned int mode)
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2020-08-17 07:10:42 +00:00
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{
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struct hisi_regulator *sreg = rdev_get_drvdata(dev);
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2020-08-17 07:10:46 +00:00
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struct hisi_pmic *pmic = sreg->pmic;
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2020-08-17 07:10:42 +00:00
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u32 eco_mode;
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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eco_mode = HISI_ECO_MODE_DISABLE;
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break;
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case REGULATOR_MODE_IDLE:
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eco_mode = HISI_ECO_MODE_ENABLE;
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break;
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default:
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return -EINVAL;
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}
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/* set mode */
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hisi_pmic_rmw(pmic, sreg->register_info.ctrl_reg,
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2020-08-17 07:10:45 +00:00
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sreg->register_info.eco_mode_mask,
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2020-08-17 07:10:42 +00:00
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eco_mode << (ffs(sreg->register_info.eco_mode_mask) - 1));
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2020-08-17 07:10:45 +00:00
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pr_debug("<[%s]: ctrl_reg=0x%x, eco_mode_mask=0x%x, value=0x%x>\n",
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__func__,
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sreg->register_info.ctrl_reg,
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sreg->register_info.eco_mode_mask,
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eco_mode << (ffs(sreg->register_info.eco_mode_mask) - 1));
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2020-08-17 07:10:42 +00:00
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return 0;
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}
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2020-08-17 07:10:45 +00:00
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static unsigned int hisi_regulator_get_optimum_mode(struct regulator_dev *dev,
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int input_uV, int output_uV,
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int load_uA)
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2020-08-17 07:10:42 +00:00
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{
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struct hisi_regulator *sreg = rdev_get_drvdata(dev);
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2020-08-17 07:10:45 +00:00
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if (load_uA || ((unsigned int)load_uA > sreg->eco_uA))
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2020-08-17 07:10:42 +00:00
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return REGULATOR_MODE_NORMAL;
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else
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return REGULATOR_MODE_IDLE;
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}
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static int hisi_dt_parse_common(struct hisi_regulator *sreg,
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2020-08-17 07:10:46 +00:00
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struct platform_device *pdev)
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2020-08-17 07:10:42 +00:00
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{
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struct device *dev = &pdev->dev;
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struct device_node *np = dev->of_node;
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struct regulator_desc *rdesc = &sreg->rdesc;
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unsigned int register_info[3] = {0};
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int ret = 0;
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/* parse .register_info.ctrl_reg */
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ret = of_property_read_u32_array(np, "hisilicon,hisi-ctrl",
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2020-08-17 07:10:45 +00:00
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register_info, 3);
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2020-08-17 07:10:42 +00:00
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if (ret) {
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dev_err(dev, "no hisilicon,hisi-ctrl property set\n");
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goto dt_parse_common_end;
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}
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sreg->register_info.ctrl_reg = register_info[0];
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sreg->register_info.enable_mask = register_info[1];
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sreg->register_info.eco_mode_mask = register_info[2];
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/* parse .register_info.vset_reg */
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ret = of_property_read_u32_array(np, "hisilicon,hisi-vset",
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2020-08-17 07:10:45 +00:00
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register_info, 2);
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2020-08-17 07:10:42 +00:00
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if (ret) {
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dev_err(dev, "no hisilicon,hisi-vset property set\n");
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goto dt_parse_common_end;
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}
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sreg->register_info.vset_reg = register_info[0];
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sreg->register_info.vset_mask = register_info[1];
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/* parse .off-on-delay */
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ret = of_property_read_u32(np, "hisilicon,hisi-off-on-delay-us",
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2020-08-17 07:10:45 +00:00
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&sreg->off_on_delay);
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2020-08-17 07:10:42 +00:00
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if (ret) {
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dev_err(dev, "no hisilicon,hisi-off-on-delay-us property set\n");
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goto dt_parse_common_end;
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}
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/* parse .enable_time */
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ret = of_property_read_u32(np, "hisilicon,hisi-enable-time-us",
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&rdesc->enable_time);
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if (ret) {
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dev_err(dev, "no hisilicon,hisi-enable-time-us property set\n");
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goto dt_parse_common_end;
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}
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/* parse .eco_uA */
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ret = of_property_read_u32(np, "hisilicon,hisi-eco-microamp",
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&sreg->eco_uA);
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if (ret) {
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sreg->eco_uA = 0;
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ret = 0;
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}
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dt_parse_common_end:
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return ret;
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}
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static int hisi_dt_parse_ldo(struct hisi_regulator *sreg,
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2020-08-17 07:10:46 +00:00
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struct platform_device *pdev)
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2020-08-17 07:10:42 +00:00
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{
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struct device *dev = &pdev->dev;
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struct device_node *np = dev->of_node;
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struct regulator_desc *rdesc = &sreg->rdesc;
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unsigned int *v_table;
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int ret = 0;
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/* parse .n_voltages, and .volt_table */
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ret = of_property_read_u32(np, "hisilicon,hisi-n-voltages",
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&rdesc->n_voltages);
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if (ret) {
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dev_err(dev, "no hisilicon,hisi-n-voltages property set\n");
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goto dt_parse_ldo_end;
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}
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/* alloc space for .volt_table */
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|
|
|
v_table = devm_kzalloc(dev, sizeof(unsigned int) * rdesc->n_voltages,
|
2020-08-17 07:10:45 +00:00
|
|
|
GFP_KERNEL);
|
2020-08-17 07:10:42 +00:00
|
|
|
if (unlikely(!v_table)) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
dev_err(dev, "no memory for .volt_table\n");
|
|
|
|
goto dt_parse_ldo_end;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = of_property_read_u32_array(np, "hisilicon,hisi-vset-table",
|
2020-08-17 07:10:45 +00:00
|
|
|
v_table, rdesc->n_voltages);
|
2020-08-17 07:10:42 +00:00
|
|
|
if (ret) {
|
|
|
|
dev_err(dev, "no hisilicon,hisi-vset-table property set\n");
|
|
|
|
goto dt_parse_ldo_end1;
|
|
|
|
}
|
|
|
|
rdesc->volt_table = v_table;
|
|
|
|
|
|
|
|
/* parse hisi regulator's dt common part */
|
|
|
|
ret = hisi_dt_parse_common(sreg, pdev);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(dev, "failure in hisi_dt_parse_common\n");
|
|
|
|
goto dt_parse_ldo_end1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
|
|
|
|
dt_parse_ldo_end1:
|
|
|
|
dt_parse_ldo_end:
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct regulator_ops hisi_ldo_rops = {
|
|
|
|
.is_enabled = hisi_regulator_is_enabled,
|
|
|
|
.enable = hisi_regulator_enable,
|
|
|
|
.disable = hisi_regulator_disable,
|
|
|
|
.list_voltage = regulator_list_voltage_table,
|
|
|
|
.get_voltage = hisi_regulator_get_voltage,
|
|
|
|
.set_voltage = hisi_regulator_set_voltage,
|
|
|
|
.get_mode = hisi_regulator_get_mode,
|
|
|
|
.set_mode = hisi_regulator_set_mode,
|
|
|
|
.get_optimum_mode = hisi_regulator_get_optimum_mode,
|
|
|
|
};
|
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
/*
|
|
|
|
* Used only for parsing the DT properties
|
|
|
|
*/
|
2020-08-17 07:10:42 +00:00
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
static const struct of_device_id of_hisi_pmic_match_tbl[] = {
|
2020-08-17 07:10:42 +00:00
|
|
|
{
|
2020-08-17 07:10:46 +00:00
|
|
|
.compatible = "hisilicon,hi6421-spmi-pmic-ldo",
|
2020-08-17 07:10:42 +00:00
|
|
|
},
|
2020-08-17 07:10:46 +00:00
|
|
|
{ }
|
2020-08-17 07:10:42 +00:00
|
|
|
};
|
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
static int hisi_regulator_probe_ldo(struct platform_device *pdev,
|
|
|
|
struct device_node *np,
|
|
|
|
struct hisi_pmic *pmic)
|
2020-08-17 07:10:42 +00:00
|
|
|
{
|
|
|
|
struct device *dev = &pdev->dev;
|
|
|
|
struct regulator_desc *rdesc;
|
|
|
|
struct regulator_dev *rdev;
|
|
|
|
struct hisi_regulator *sreg = NULL;
|
|
|
|
struct regulator_init_data *initdata;
|
|
|
|
struct regulator_config config = { };
|
|
|
|
struct regulation_constraints *constraint;
|
|
|
|
const char *supplyname = NULL;
|
|
|
|
unsigned int temp_modes;
|
|
|
|
int ret = 0;
|
|
|
|
|
|
|
|
initdata = of_get_regulator_init_data(dev, np, NULL);
|
2020-08-17 07:10:45 +00:00
|
|
|
if (!initdata) {
|
2020-08-17 07:10:42 +00:00
|
|
|
pr_err("get regulator init data error !\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* hisi regulator supports two modes */
|
|
|
|
constraint = &initdata->constraints;
|
|
|
|
|
|
|
|
ret = of_property_read_u32_array(np, "hisilicon,valid-modes-mask",
|
2020-08-17 07:10:45 +00:00
|
|
|
&constraint->valid_modes_mask, 1);
|
2020-08-17 07:10:42 +00:00
|
|
|
if (ret) {
|
|
|
|
pr_err("no hisilicon,valid-modes-mask property set\n");
|
|
|
|
ret = -ENODEV;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
ret = of_property_read_u32_array(np, "hisilicon,valid-idle-mask",
|
2020-08-17 07:10:45 +00:00
|
|
|
&temp_modes, 1);
|
2020-08-17 07:10:42 +00:00
|
|
|
if (ret) {
|
|
|
|
pr_err("no hisilicon,valid-modes-mask property set\n");
|
|
|
|
ret = -ENODEV;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
constraint->valid_ops_mask |= temp_modes;
|
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
sreg = kzalloc(sizeof(*sreg), GFP_KERNEL);
|
2020-08-17 07:10:45 +00:00
|
|
|
if (!sreg)
|
2020-08-17 07:10:42 +00:00
|
|
|
return -ENOMEM;
|
2020-08-17 07:10:45 +00:00
|
|
|
|
2020-08-17 07:10:42 +00:00
|
|
|
sreg->name = initdata->constraints.name;
|
2020-08-17 07:10:46 +00:00
|
|
|
sreg->pmic = pmic;
|
2020-08-17 07:10:42 +00:00
|
|
|
rdesc = &sreg->rdesc;
|
2020-08-17 07:10:46 +00:00
|
|
|
|
2020-08-17 07:10:42 +00:00
|
|
|
rdesc->name = sreg->name;
|
2020-08-17 07:10:46 +00:00
|
|
|
rdesc->ops = &hisi_ldo_rops;
|
|
|
|
rdesc->type = REGULATOR_VOLTAGE;
|
2020-08-17 07:10:42 +00:00
|
|
|
rdesc->min_uV = initdata->constraints.min_uV;
|
2020-08-17 07:10:46 +00:00
|
|
|
|
2020-08-17 07:10:42 +00:00
|
|
|
supplyname = of_get_property(np, "hisilicon,supply_name", NULL);
|
2020-08-17 07:10:45 +00:00
|
|
|
if (supplyname)
|
2020-08-17 07:10:42 +00:00
|
|
|
initdata->supply_regulator = supplyname;
|
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
/* parse device tree data for regulator specific */
|
|
|
|
ret = hisi_dt_parse_ldo(sreg, pdev);
|
2020-08-17 07:10:42 +00:00
|
|
|
if (ret) {
|
|
|
|
dev_err(dev, "device tree parameter parse error!\n");
|
|
|
|
goto hisi_probe_end;
|
|
|
|
}
|
|
|
|
|
|
|
|
config.dev = &pdev->dev;
|
|
|
|
config.init_data = initdata;
|
|
|
|
config.driver_data = sreg;
|
|
|
|
config.of_node = pdev->dev.of_node;
|
|
|
|
|
|
|
|
/* register regulator */
|
|
|
|
rdev = regulator_register(rdesc, &config);
|
|
|
|
if (IS_ERR(rdev)) {
|
|
|
|
dev_err(dev, "failed to register %s\n",
|
|
|
|
rdesc->name);
|
|
|
|
ret = PTR_ERR(rdev);
|
|
|
|
goto hisi_probe_end;
|
|
|
|
}
|
|
|
|
|
2020-08-17 07:10:45 +00:00
|
|
|
pr_debug("[%s]:valid_modes_mask[0x%x], valid_ops_mask[0x%x]\n",
|
|
|
|
rdesc->name,
|
|
|
|
constraint->valid_modes_mask, constraint->valid_ops_mask);
|
2020-08-17 07:10:42 +00:00
|
|
|
|
|
|
|
dev_set_drvdata(dev, rdev);
|
|
|
|
hisi_probe_end:
|
|
|
|
if (ret)
|
|
|
|
kfree(sreg);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2020-08-17 07:10:45 +00:00
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
static int hisi_regulator_probe(struct platform_device *pdev)
|
2020-08-17 07:10:42 +00:00
|
|
|
{
|
2020-08-17 07:10:46 +00:00
|
|
|
struct device *pmic_dev = pdev->dev.parent;
|
|
|
|
struct device_node *np = pmic_dev->of_node;
|
|
|
|
struct device_node *regulators, *child;
|
|
|
|
struct platform_device *new_pdev;
|
|
|
|
struct hisi_pmic *pmic;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
dev_dbg(&pdev->dev, "probing hi6421v600 regulator\n");
|
|
|
|
/*
|
|
|
|
* This driver is meant to be called by hi6421-spmi-core,
|
|
|
|
* which should first set drvdata. If this doesn't happen, hit
|
|
|
|
* a warn on and return.
|
|
|
|
*/
|
|
|
|
pmic = dev_get_drvdata(pmic_dev);
|
|
|
|
if (WARN_ON(!pmic))
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
regulators = of_get_child_by_name(np, "regulators");
|
|
|
|
if (!regulators) {
|
|
|
|
dev_err(&pdev->dev, "regulator node not found\n");
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
2020-08-17 07:10:42 +00:00
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
/*
|
|
|
|
* Parse all LDO regulator nodes
|
|
|
|
*/
|
|
|
|
for_each_child_of_node(regulators, child) {
|
|
|
|
dev_dbg(&pdev->dev, "adding child %pOF\n", child);
|
|
|
|
|
|
|
|
new_pdev = platform_device_alloc(child->name, -1);
|
|
|
|
new_pdev->dev.parent = pmic_dev;
|
|
|
|
new_pdev->dev.of_node = of_node_get(child);
|
|
|
|
|
|
|
|
ret = platform_device_add(new_pdev);
|
|
|
|
if (ret < 0) {
|
|
|
|
platform_device_put(new_pdev);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = hisi_regulator_probe_ldo(new_pdev, child, pmic);
|
|
|
|
if (ret < 0)
|
|
|
|
platform_device_put(new_pdev);
|
2020-08-17 07:10:42 +00:00
|
|
|
}
|
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
of_node_put(regulators);
|
2020-08-17 07:10:42 +00:00
|
|
|
|
|
|
|
return 0;
|
2020-08-17 07:10:45 +00:00
|
|
|
}
|
2020-08-17 07:10:42 +00:00
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
static int hisi_regulator_remove(struct platform_device *pdev)
|
2020-08-17 07:10:42 +00:00
|
|
|
{
|
2020-08-17 07:10:46 +00:00
|
|
|
struct regulator_dev *rdev = dev_get_drvdata(&pdev->dev);
|
|
|
|
struct hisi_regulator *sreg = rdev_get_drvdata(rdev);
|
2020-08-17 07:10:42 +00:00
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
regulator_unregister(rdev);
|
|
|
|
|
|
|
|
/* TODO: should i worry about that? devm_kzalloc */
|
|
|
|
if (sreg->rdesc.volt_table)
|
|
|
|
devm_kfree(&pdev->dev, (unsigned int *)sreg->rdesc.volt_table);
|
2020-08-17 07:10:42 +00:00
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
kfree(sreg);
|
2020-08-17 07:10:42 +00:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
static const struct platform_device_id hi6421v600_regulator_table[] = {
|
|
|
|
{ .name = "hi6421v600-regulator" },
|
|
|
|
{},
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(platform, hi6421v600_regulator_table);
|
|
|
|
|
|
|
|
static struct platform_driver hi6421v600_regulator_driver = {
|
|
|
|
.id_table = hi6421v600_regulator_table,
|
2020-08-17 07:10:42 +00:00
|
|
|
.driver = {
|
2020-08-17 07:10:46 +00:00
|
|
|
.name = "hi6421v600-regulator",
|
2020-08-17 07:10:42 +00:00
|
|
|
},
|
|
|
|
.probe = hisi_regulator_probe,
|
|
|
|
.remove = hisi_regulator_remove,
|
|
|
|
};
|
2020-08-17 07:10:46 +00:00
|
|
|
module_platform_driver(hi6421v600_regulator_driver);
|
2020-08-17 07:10:42 +00:00
|
|
|
|
2020-08-17 07:10:46 +00:00
|
|
|
MODULE_DESCRIPTION("Hi6421v600 regulator driver");
|
2020-08-17 07:10:42 +00:00
|
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
|