+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * PCAP2 Regulator Driver
- *
- * Copyright (c) 2009 Daniel Ribeiro <drwyrm@gmail.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <linux/regulator/driver.h>
-#include <linux/regulator/machine.h>
-#include <linux/mfd/ezx-pcap.h>
-
-static const unsigned int V1_table[] = {
- 2775000, 1275000, 1600000, 1725000, 1825000, 1925000, 2075000, 2275000,
-};
-
-static const unsigned int V2_table[] = {
- 2500000, 2775000,
-};
-
-static const unsigned int V3_table[] = {
- 1075000, 1275000, 1550000, 1725000, 1876000, 1950000, 2075000, 2275000,
-};
-
-static const unsigned int V4_table[] = {
- 1275000, 1550000, 1725000, 1875000, 1950000, 2075000, 2275000, 2775000,
-};
-
-static const unsigned int V5_table[] = {
- 1875000, 2275000, 2475000, 2775000,
-};
-
-static const unsigned int V6_table[] = {
- 2475000, 2775000,
-};
-
-static const unsigned int V7_table[] = {
- 1875000, 2775000,
-};
-
-#define V8_table V4_table
-
-static const unsigned int V9_table[] = {
- 1575000, 1875000, 2475000, 2775000,
-};
-
-static const unsigned int V10_table[] = {
- 5000000,
-};
-
-static const unsigned int VAUX1_table[] = {
- 1875000, 2475000, 2775000, 3000000,
-};
-
-#define VAUX2_table VAUX1_table
-
-static const unsigned int VAUX3_table[] = {
- 1200000, 1200000, 1200000, 1200000, 1400000, 1600000, 1800000, 2000000,
- 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000, 3600000,
-};
-
-static const unsigned int VAUX4_table[] = {
- 1800000, 1800000, 3000000, 5000000,
-};
-
-static const unsigned int VSIM_table[] = {
- 1875000, 3000000,
-};
-
-static const unsigned int VSIM2_table[] = {
- 1875000,
-};
-
-static const unsigned int VVIB_table[] = {
- 1300000, 1800000, 2000000, 3000000,
-};
-
-static const unsigned int SW1_table[] = {
- 900000, 950000, 1000000, 1050000, 1100000, 1150000, 1200000, 1250000,
- 1300000, 1350000, 1400000, 1450000, 1500000, 1600000, 1875000, 2250000,
-};
-
-#define SW2_table SW1_table
-
-struct pcap_regulator {
- const u8 reg;
- const u8 en;
- const u8 index;
- const u8 stby;
- const u8 lowpwr;
-};
-
-#define NA 0xff
-
-#define VREG_INFO(_vreg, _reg, _en, _index, _stby, _lowpwr) \
- [_vreg] = { \
- .reg = _reg, \
- .en = _en, \
- .index = _index, \
- .stby = _stby, \
- .lowpwr = _lowpwr, \
- }
-
-static const struct pcap_regulator vreg_table[] = {
- VREG_INFO(V1, PCAP_REG_VREG1, 1, 2, 18, 0),
- VREG_INFO(V2, PCAP_REG_VREG1, 5, 6, 19, 22),
- VREG_INFO(V3, PCAP_REG_VREG1, 7, 8, 20, 23),
- VREG_INFO(V4, PCAP_REG_VREG1, 11, 12, 21, 24),
- /* V5 STBY and LOWPWR are on PCAP_REG_VREG2 */
- VREG_INFO(V5, PCAP_REG_VREG1, 15, 16, 12, 19),
-
- VREG_INFO(V6, PCAP_REG_VREG2, 1, 2, 14, 20),
- VREG_INFO(V7, PCAP_REG_VREG2, 3, 4, 15, 21),
- VREG_INFO(V8, PCAP_REG_VREG2, 5, 6, 16, 22),
- VREG_INFO(V9, PCAP_REG_VREG2, 9, 10, 17, 23),
- VREG_INFO(V10, PCAP_REG_VREG2, 10, NA, 18, 24),
-
- VREG_INFO(VAUX1, PCAP_REG_AUXVREG, 1, 2, 22, 23),
- /* VAUX2 ... VSIM2 STBY and LOWPWR are on PCAP_REG_LOWPWR */
- VREG_INFO(VAUX2, PCAP_REG_AUXVREG, 4, 5, 0, 1),
- VREG_INFO(VAUX3, PCAP_REG_AUXVREG, 7, 8, 2, 3),
- VREG_INFO(VAUX4, PCAP_REG_AUXVREG, 12, 13, 4, 5),
- VREG_INFO(VSIM, PCAP_REG_AUXVREG, 17, 18, NA, 6),
- VREG_INFO(VSIM2, PCAP_REG_AUXVREG, 16, NA, NA, 7),
- VREG_INFO(VVIB, PCAP_REG_AUXVREG, 19, 20, NA, NA),
-
- VREG_INFO(SW1, PCAP_REG_SWCTRL, 1, 2, NA, NA),
- VREG_INFO(SW2, PCAP_REG_SWCTRL, 6, 7, NA, NA),
- /* SW3 STBY is on PCAP_REG_AUXVREG */
- VREG_INFO(SW3, PCAP_REG_SWCTRL, 11, 12, 24, NA),
-
- /* SWxS used to control SWx voltage on standby */
-/* VREG_INFO(SW1S, PCAP_REG_LOWPWR, NA, 12, NA, NA),
- VREG_INFO(SW2S, PCAP_REG_LOWPWR, NA, 20, NA, NA), */
-};
-
-static int pcap_regulator_set_voltage_sel(struct regulator_dev *rdev,
- unsigned selector)
-{
- const struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
- void *pcap = rdev_get_drvdata(rdev);
-
- /* the regulator doesn't support voltage switching */
- if (rdev->desc->n_voltages == 1)
- return -EINVAL;
-
- return ezx_pcap_set_bits(pcap, vreg->reg,
- (rdev->desc->n_voltages - 1) << vreg->index,
- selector << vreg->index);
-}
-
-static int pcap_regulator_get_voltage_sel(struct regulator_dev *rdev)
-{
- const struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
- void *pcap = rdev_get_drvdata(rdev);
- u32 tmp;
-
- if (rdev->desc->n_voltages == 1)
- return 0;
-
- ezx_pcap_read(pcap, vreg->reg, &tmp);
- tmp = ((tmp >> vreg->index) & (rdev->desc->n_voltages - 1));
- return tmp;
-}
-
-static int pcap_regulator_enable(struct regulator_dev *rdev)
-{
- const struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
- void *pcap = rdev_get_drvdata(rdev);
-
- if (vreg->en == NA)
- return -EINVAL;
-
- return ezx_pcap_set_bits(pcap, vreg->reg, 1 << vreg->en, 1 << vreg->en);
-}
-
-static int pcap_regulator_disable(struct regulator_dev *rdev)
-{
- const struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
- void *pcap = rdev_get_drvdata(rdev);
-
- if (vreg->en == NA)
- return -EINVAL;
-
- return ezx_pcap_set_bits(pcap, vreg->reg, 1 << vreg->en, 0);
-}
-
-static int pcap_regulator_is_enabled(struct regulator_dev *rdev)
-{
- const struct pcap_regulator *vreg = &vreg_table[rdev_get_id(rdev)];
- void *pcap = rdev_get_drvdata(rdev);
- u32 tmp;
-
- if (vreg->en == NA)
- return -EINVAL;
-
- ezx_pcap_read(pcap, vreg->reg, &tmp);
- return (tmp >> vreg->en) & 1;
-}
-
-static const struct regulator_ops pcap_regulator_ops = {
- .list_voltage = regulator_list_voltage_table,
- .set_voltage_sel = pcap_regulator_set_voltage_sel,
- .get_voltage_sel = pcap_regulator_get_voltage_sel,
- .enable = pcap_regulator_enable,
- .disable = pcap_regulator_disable,
- .is_enabled = pcap_regulator_is_enabled,
-};
-
-#define VREG(_vreg) \
- [_vreg] = { \
- .name = #_vreg, \
- .id = _vreg, \
- .n_voltages = ARRAY_SIZE(_vreg##_table), \
- .volt_table = _vreg##_table, \
- .ops = &pcap_regulator_ops, \
- .type = REGULATOR_VOLTAGE, \
- .owner = THIS_MODULE, \
- }
-
-static const struct regulator_desc pcap_regulators[] = {
- VREG(V1), VREG(V2), VREG(V3), VREG(V4), VREG(V5), VREG(V6), VREG(V7),
- VREG(V8), VREG(V9), VREG(V10), VREG(VAUX1), VREG(VAUX2), VREG(VAUX3),
- VREG(VAUX4), VREG(VSIM), VREG(VSIM2), VREG(VVIB), VREG(SW1), VREG(SW2),
-};
-
-static int pcap_regulator_probe(struct platform_device *pdev)
-{
- struct regulator_dev *rdev;
- void *pcap = dev_get_drvdata(pdev->dev.parent);
- struct regulator_config config = { };
-
- config.dev = &pdev->dev;
- config.init_data = dev_get_platdata(&pdev->dev);
- config.driver_data = pcap;
-
- rdev = devm_regulator_register(&pdev->dev, &pcap_regulators[pdev->id],
- &config);
- if (IS_ERR(rdev))
- return PTR_ERR(rdev);
-
- platform_set_drvdata(pdev, rdev);
-
- return 0;
-}
-
-static struct platform_driver pcap_regulator_driver = {
- .driver = {
- .name = "pcap-regulator",
- .probe_type = PROBE_PREFER_ASYNCHRONOUS,
- },
- .probe = pcap_regulator_probe,
-};
-
-static int __init pcap_regulator_init(void)
-{
- return platform_driver_register(&pcap_regulator_driver);
-}
-
-static void __exit pcap_regulator_exit(void)
-{
- platform_driver_unregister(&pcap_regulator_driver);
-}
-
-subsys_initcall(pcap_regulator_init);
-module_exit(pcap_regulator_exit);
-
-MODULE_AUTHOR("Daniel Ribeiro <drwyrm@gmail.com>");
-MODULE_DESCRIPTION("PCAP2 Regulator Driver");
-MODULE_LICENSE("GPL");
projects / thirdparty / kernel / linux.git / commitdiff
