2019-05-29 22:17:56 +08:00
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// SPDX-License-Identifier: GPL-2.0-only
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2017-11-01 10:32:08 +08:00
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/*
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* Copyright (C) 2017 Spreadtrum Communications Inc.
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*/
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/mfd/core.h>
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#include <linux/of_device.h>
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#include <linux/regmap.h>
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#include <linux/spi/spi.h>
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#define SPRD_PMIC_INT_MASK_STATUS 0x0
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#define SPRD_PMIC_INT_RAW_STATUS 0x4
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#define SPRD_PMIC_INT_EN 0x8
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#define SPRD_SC2731_IRQ_BASE 0x140
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#define SPRD_SC2731_IRQ_NUMS 16
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struct sprd_pmic {
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struct regmap *regmap;
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struct device *dev;
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struct regmap_irq *irqs;
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struct regmap_irq_chip irq_chip;
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struct regmap_irq_chip_data *irq_data;
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int irq;
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};
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struct sprd_pmic_data {
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u32 irq_base;
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u32 num_irqs;
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};
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/*
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* Since different PMICs of SC27xx series can have different interrupt
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* base address and irq number, we should save irq number and irq base
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* in the device data structure.
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*/
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static const struct sprd_pmic_data sc2731_data = {
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.irq_base = SPRD_SC2731_IRQ_BASE,
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.num_irqs = SPRD_SC2731_IRQ_NUMS,
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};
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static const struct mfd_cell sprd_pmic_devs[] = {
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{
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.name = "sc27xx-wdt",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-wdt",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-rtc",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-rtc",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-charger",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-charger",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-chg-timer",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-chg-timer",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-fast-chg",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-fast-chg",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-chg-wdt",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-chg-wdt",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-typec",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-typec",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-flash",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-flash",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-eic",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-eic",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-efuse",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-efuse",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-thermal",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-thermal",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-adc",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-adc",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-audio-codec",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-audio-codec",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-regulator",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-regulator",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-vibrator",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-vibrator",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-keypad-led",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-keypad-led",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-bltc",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-bltc",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-fgu",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-fgu",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-7sreset",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-7sreset",
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2017-11-01 10:32:08 +08:00
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}, {
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.name = "sc27xx-poweroff",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-poweroff",
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2018-03-22 13:40:25 +08:00
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}, {
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.name = "sc27xx-syscon",
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2019-03-18 11:26:51 +08:00
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.of_compatible = "sprd,sc2731-syscon",
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2017-11-01 10:32:08 +08:00
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},
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};
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static int sprd_pmic_spi_write(void *context, const void *data, size_t count)
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{
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struct device *dev = context;
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struct spi_device *spi = to_spi_device(dev);
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return spi_write(spi, data, count);
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}
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static int sprd_pmic_spi_read(void *context,
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const void *reg, size_t reg_size,
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void *val, size_t val_size)
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{
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struct device *dev = context;
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struct spi_device *spi = to_spi_device(dev);
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u32 rx_buf[2] = { 0 };
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int ret;
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/* Now we only support one PMIC register to read every time. */
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if (reg_size != sizeof(u32) || val_size != sizeof(u32))
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return -EINVAL;
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/* Copy address to read from into first element of SPI buffer. */
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memcpy(rx_buf, reg, sizeof(u32));
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ret = spi_read(spi, rx_buf, 1);
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if (ret < 0)
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return ret;
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memcpy(val, rx_buf, val_size);
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return 0;
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}
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static struct regmap_bus sprd_pmic_regmap = {
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.write = sprd_pmic_spi_write,
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.read = sprd_pmic_spi_read,
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.reg_format_endian_default = REGMAP_ENDIAN_NATIVE,
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.val_format_endian_default = REGMAP_ENDIAN_NATIVE,
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};
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static const struct regmap_config sprd_pmic_config = {
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.reg_bits = 32,
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.val_bits = 32,
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.reg_stride = 4,
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.max_register = 0xffff,
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};
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static int sprd_pmic_probe(struct spi_device *spi)
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{
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struct sprd_pmic *ddata;
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const struct sprd_pmic_data *pdata;
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int ret, i;
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pdata = of_device_get_match_data(&spi->dev);
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if (!pdata) {
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dev_err(&spi->dev, "No matching driver data found\n");
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return -EINVAL;
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}
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ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL);
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if (!ddata)
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return -ENOMEM;
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ddata->regmap = devm_regmap_init(&spi->dev, &sprd_pmic_regmap,
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&spi->dev, &sprd_pmic_config);
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if (IS_ERR(ddata->regmap)) {
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ret = PTR_ERR(ddata->regmap);
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dev_err(&spi->dev, "Failed to allocate register map %d\n", ret);
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return ret;
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}
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spi_set_drvdata(spi, ddata);
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ddata->dev = &spi->dev;
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ddata->irq = spi->irq;
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ddata->irq_chip.name = dev_name(&spi->dev);
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ddata->irq_chip.status_base =
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pdata->irq_base + SPRD_PMIC_INT_MASK_STATUS;
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ddata->irq_chip.mask_base = pdata->irq_base + SPRD_PMIC_INT_EN;
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ddata->irq_chip.ack_base = 0;
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ddata->irq_chip.num_regs = 1;
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ddata->irq_chip.num_irqs = pdata->num_irqs;
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ddata->irq_chip.mask_invert = true;
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treewide: devm_kzalloc() -> devm_kcalloc()
The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc().
This patch replaces cases of:
devm_kzalloc(handle, a * b, gfp)
with:
devm_kcalloc(handle, a * b, gfp)
as well as handling cases of:
devm_kzalloc(handle, a * b * c, gfp)
with:
devm_kzalloc(handle, array3_size(a, b, c), gfp)
as it's slightly less ugly than:
devm_kcalloc(handle, array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
devm_kzalloc(handle, 4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
Some manual whitespace fixes were needed in this patch, as Coccinelle
really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...".
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
expression HANDLE;
type TYPE;
expression THING, E;
@@
(
devm_kzalloc(HANDLE,
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
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devm_kzalloc(HANDLE,
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression HANDLE;
expression COUNT;
typedef u8;
typedef __u8;
@@
(
devm_kzalloc(HANDLE,
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
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devm_kzalloc(HANDLE,
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
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devm_kzalloc(HANDLE,
- sizeof(char) * (COUNT)
+ COUNT
, ...)
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devm_kzalloc(HANDLE,
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
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devm_kzalloc(HANDLE,
- sizeof(u8) * COUNT
+ COUNT
, ...)
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devm_kzalloc(HANDLE,
- sizeof(__u8) * COUNT
+ COUNT
, ...)
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devm_kzalloc(HANDLE,
- sizeof(char) * COUNT
+ COUNT
, ...)
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devm_kzalloc(HANDLE,
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
expression HANDLE;
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
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- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
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- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
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- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
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- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
expression HANDLE;
identifier SIZE, COUNT;
@@
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression HANDLE;
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression HANDLE;
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
devm_kzalloc(HANDLE,
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
expression HANDLE;
identifier STRIDE, SIZE, COUNT;
@@
(
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
devm_kzalloc(HANDLE,
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression HANDLE;
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE,
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
devm_kzalloc(HANDLE,
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression HANDLE;
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
devm_kzalloc(HANDLE, sizeof(THING) * C2, ...)
|
devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...)
|
devm_kzalloc(HANDLE, C1 * C2 * C3, ...)
|
devm_kzalloc(HANDLE, C1 * C2, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * E2
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- (E1) * (E2)
+ E1, E2
, ...)
|
- devm_kzalloc
+ devm_kcalloc
(HANDLE,
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-13 05:07:58 +08:00
|
|
|
ddata->irqs = devm_kcalloc(&spi->dev,
|
|
|
|
pdata->num_irqs, sizeof(struct regmap_irq),
|
|
|
|
GFP_KERNEL);
|
2017-11-01 10:32:08 +08:00
|
|
|
if (!ddata->irqs)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
ddata->irq_chip.irqs = ddata->irqs;
|
|
|
|
for (i = 0; i < pdata->num_irqs; i++) {
|
|
|
|
ddata->irqs[i].reg_offset = i / pdata->num_irqs;
|
|
|
|
ddata->irqs[i].mask = BIT(i % pdata->num_irqs);
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = devm_regmap_add_irq_chip(&spi->dev, ddata->regmap, ddata->irq,
|
|
|
|
IRQF_ONESHOT | IRQF_NO_SUSPEND, 0,
|
|
|
|
&ddata->irq_chip, &ddata->irq_data);
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&spi->dev, "Failed to add PMIC irq chip %d\n", ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = devm_mfd_add_devices(&spi->dev, PLATFORM_DEVID_AUTO,
|
|
|
|
sprd_pmic_devs, ARRAY_SIZE(sprd_pmic_devs),
|
|
|
|
NULL, 0,
|
|
|
|
regmap_irq_get_domain(ddata->irq_data));
|
|
|
|
if (ret) {
|
|
|
|
dev_err(&spi->dev, "Failed to register device %d\n", ret);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct of_device_id sprd_pmic_match[] = {
|
|
|
|
{ .compatible = "sprd,sc2731", .data = &sc2731_data },
|
|
|
|
{},
|
|
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, sprd_pmic_match);
|
|
|
|
|
|
|
|
static struct spi_driver sprd_pmic_driver = {
|
|
|
|
.driver = {
|
|
|
|
.name = "sc27xx-pmic",
|
|
|
|
.bus = &spi_bus_type,
|
|
|
|
.of_match_table = sprd_pmic_match,
|
|
|
|
},
|
|
|
|
.probe = sprd_pmic_probe,
|
|
|
|
};
|
|
|
|
|
|
|
|
static int __init sprd_pmic_init(void)
|
|
|
|
{
|
|
|
|
return spi_register_driver(&sprd_pmic_driver);
|
|
|
|
}
|
|
|
|
subsys_initcall(sprd_pmic_init);
|
|
|
|
|
|
|
|
static void __exit sprd_pmic_exit(void)
|
|
|
|
{
|
|
|
|
spi_unregister_driver(&sprd_pmic_driver);
|
|
|
|
}
|
|
|
|
module_exit(sprd_pmic_exit);
|
|
|
|
|
|
|
|
MODULE_LICENSE("GPL v2");
|
|
|
|
MODULE_DESCRIPTION("Spreadtrum SC27xx PMICs driver");
|
|
|
|
MODULE_AUTHOR("Baolin Wang <baolin.wang@spreadtrum.com>");
|