465 lines
15 KiB
C
465 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/* I2C support for Dialog DA9063
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*
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* Copyright 2012 Dialog Semiconductor Ltd.
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* Copyright 2013 Philipp Zabel, Pengutronix
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*
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* Author: Krystian Garbaciak, Dialog Semiconductor
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/i2c.h>
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#include <linux/regmap.h>
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#include <linux/delay.h>
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#include <linux/slab.h>
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#include <linux/err.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/da9063/core.h>
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#include <linux/mfd/da9063/registers.h>
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#include <linux/of.h>
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#include <linux/regulator/of_regulator.h>
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/*
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* Raw I2C access required for just accessing chip and variant info before we
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* know which device is present. The info read from the device using this
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* approach is then used to select the correct regmap tables.
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*/
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#define DA9063_REG_PAGE_SIZE 0x100
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#define DA9063_REG_PAGED_ADDR_MASK 0xFF
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enum da9063_page_sel_buf_fmt {
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DA9063_PAGE_SEL_BUF_PAGE_REG = 0,
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DA9063_PAGE_SEL_BUF_PAGE_VAL,
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DA9063_PAGE_SEL_BUF_SIZE,
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};
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enum da9063_paged_read_msgs {
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DA9063_PAGED_READ_MSG_PAGE_SEL = 0,
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DA9063_PAGED_READ_MSG_REG_SEL,
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DA9063_PAGED_READ_MSG_DATA,
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DA9063_PAGED_READ_MSG_CNT,
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};
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static int da9063_i2c_blockreg_read(struct i2c_client *client, u16 addr,
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u8 *buf, int count)
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{
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struct i2c_msg xfer[DA9063_PAGED_READ_MSG_CNT];
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u8 page_sel_buf[DA9063_PAGE_SEL_BUF_SIZE];
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u8 page_num, paged_addr;
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int ret;
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/* Determine page info based on register address */
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page_num = (addr / DA9063_REG_PAGE_SIZE);
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if (page_num > 1) {
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dev_err(&client->dev, "Invalid register address provided\n");
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return -EINVAL;
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}
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paged_addr = (addr % DA9063_REG_PAGE_SIZE) & DA9063_REG_PAGED_ADDR_MASK;
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page_sel_buf[DA9063_PAGE_SEL_BUF_PAGE_REG] = DA9063_REG_PAGE_CON;
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page_sel_buf[DA9063_PAGE_SEL_BUF_PAGE_VAL] =
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(page_num << DA9063_I2C_PAGE_SEL_SHIFT) & DA9063_REG_PAGE_MASK;
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/* Write reg address, page selection */
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xfer[DA9063_PAGED_READ_MSG_PAGE_SEL].addr = client->addr;
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xfer[DA9063_PAGED_READ_MSG_PAGE_SEL].flags = 0;
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xfer[DA9063_PAGED_READ_MSG_PAGE_SEL].len = DA9063_PAGE_SEL_BUF_SIZE;
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xfer[DA9063_PAGED_READ_MSG_PAGE_SEL].buf = page_sel_buf;
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/* Select register address */
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xfer[DA9063_PAGED_READ_MSG_REG_SEL].addr = client->addr;
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xfer[DA9063_PAGED_READ_MSG_REG_SEL].flags = 0;
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xfer[DA9063_PAGED_READ_MSG_REG_SEL].len = sizeof(paged_addr);
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xfer[DA9063_PAGED_READ_MSG_REG_SEL].buf = &paged_addr;
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/* Read data */
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xfer[DA9063_PAGED_READ_MSG_DATA].addr = client->addr;
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xfer[DA9063_PAGED_READ_MSG_DATA].flags = I2C_M_RD;
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xfer[DA9063_PAGED_READ_MSG_DATA].len = count;
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xfer[DA9063_PAGED_READ_MSG_DATA].buf = buf;
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ret = i2c_transfer(client->adapter, xfer, DA9063_PAGED_READ_MSG_CNT);
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if (ret < 0) {
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dev_err(&client->dev, "Paged block read failed: %d\n", ret);
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return ret;
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}
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if (ret != DA9063_PAGED_READ_MSG_CNT) {
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dev_err(&client->dev, "Paged block read failed to complete\n");
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return -EIO;
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}
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return 0;
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}
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enum {
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DA9063_DEV_ID_REG = 0,
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DA9063_VAR_ID_REG,
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DA9063_CHIP_ID_REGS,
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};
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static int da9063_get_device_type(struct i2c_client *i2c, struct da9063 *da9063)
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{
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u8 buf[DA9063_CHIP_ID_REGS];
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int ret;
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ret = da9063_i2c_blockreg_read(i2c, DA9063_REG_DEVICE_ID, buf,
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DA9063_CHIP_ID_REGS);
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if (ret)
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return ret;
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if (buf[DA9063_DEV_ID_REG] != PMIC_CHIP_ID_DA9063) {
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dev_err(da9063->dev,
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"Invalid chip device ID: 0x%02x\n",
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buf[DA9063_DEV_ID_REG]);
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return -ENODEV;
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}
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dev_info(da9063->dev,
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"Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n",
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buf[DA9063_DEV_ID_REG], buf[DA9063_VAR_ID_REG]);
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da9063->variant_code =
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(buf[DA9063_VAR_ID_REG] & DA9063_VARIANT_ID_MRC_MASK)
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>> DA9063_VARIANT_ID_MRC_SHIFT;
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return 0;
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}
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/*
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* Variant specific regmap configs
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*/
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static const struct regmap_range da9063_ad_readable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_AD_REG_SECOND_D),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_AD_REG_GP_ID_19),
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regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
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};
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static const struct regmap_range da9063_ad_writeable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
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regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
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regmap_reg_range(DA9063_REG_COUNT_S, DA9063_AD_REG_ALARM_Y),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_AD_REG_MON_REG_4),
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regmap_reg_range(DA9063_AD_REG_GP_ID_0, DA9063_AD_REG_GP_ID_19),
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};
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static const struct regmap_range da9063_ad_volatile_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
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regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
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regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
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regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
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regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
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regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_AD_REG_SECOND_D),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
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regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
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regmap_reg_range(DA9063_AD_REG_MON_REG_5, DA9063_AD_REG_MON_REG_6),
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};
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static const struct regmap_access_table da9063_ad_readable_table = {
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.yes_ranges = da9063_ad_readable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063_ad_readable_ranges),
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};
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static const struct regmap_access_table da9063_ad_writeable_table = {
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.yes_ranges = da9063_ad_writeable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063_ad_writeable_ranges),
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};
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static const struct regmap_access_table da9063_ad_volatile_table = {
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.yes_ranges = da9063_ad_volatile_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063_ad_volatile_ranges),
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};
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static const struct regmap_range da9063_bb_readable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_BB_REG_SECOND_D),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
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regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
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};
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static const struct regmap_range da9063_bb_writeable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
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regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
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regmap_reg_range(DA9063_REG_COUNT_S, DA9063_BB_REG_ALARM_Y),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
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regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
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};
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static const struct regmap_range da9063_bb_da_volatile_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
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regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
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regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
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regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
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regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
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regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_BB_REG_SECOND_D),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
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regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
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regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
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};
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static const struct regmap_access_table da9063_bb_readable_table = {
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.yes_ranges = da9063_bb_readable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063_bb_readable_ranges),
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};
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static const struct regmap_access_table da9063_bb_writeable_table = {
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.yes_ranges = da9063_bb_writeable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063_bb_writeable_ranges),
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};
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static const struct regmap_access_table da9063_bb_da_volatile_table = {
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.yes_ranges = da9063_bb_da_volatile_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063_bb_da_volatile_ranges),
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};
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static const struct regmap_range da9063l_bb_readable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_MON_A10_RES),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_19),
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regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
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};
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static const struct regmap_range da9063l_bb_writeable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
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regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
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regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_19),
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};
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static const struct regmap_range da9063l_bb_da_volatile_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_EVENT_D),
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regmap_reg_range(DA9063_REG_CONTROL_A, DA9063_REG_CONTROL_B),
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regmap_reg_range(DA9063_REG_CONTROL_E, DA9063_REG_CONTROL_F),
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regmap_reg_range(DA9063_REG_BCORE2_CONT, DA9063_REG_LDO11_CONT),
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regmap_reg_range(DA9063_REG_DVC_1, DA9063_REG_ADC_MAN),
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regmap_reg_range(DA9063_REG_ADC_RES_L, DA9063_REG_MON_A10_RES),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_SEQ),
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regmap_reg_range(DA9063_REG_EN_32K, DA9063_REG_EN_32K),
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regmap_reg_range(DA9063_BB_REG_MON_REG_5, DA9063_BB_REG_MON_REG_6),
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};
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static const struct regmap_access_table da9063l_bb_readable_table = {
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.yes_ranges = da9063l_bb_readable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063l_bb_readable_ranges),
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};
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static const struct regmap_access_table da9063l_bb_writeable_table = {
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.yes_ranges = da9063l_bb_writeable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063l_bb_writeable_ranges),
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};
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static const struct regmap_access_table da9063l_bb_da_volatile_table = {
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.yes_ranges = da9063l_bb_da_volatile_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063l_bb_da_volatile_ranges),
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};
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static const struct regmap_range da9063_da_readable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_BB_REG_SECOND_D),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_11),
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regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
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};
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static const struct regmap_range da9063_da_writeable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
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regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
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regmap_reg_range(DA9063_REG_COUNT_S, DA9063_BB_REG_ALARM_Y),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
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regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_11),
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};
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static const struct regmap_access_table da9063_da_readable_table = {
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.yes_ranges = da9063_da_readable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063_da_readable_ranges),
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};
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static const struct regmap_access_table da9063_da_writeable_table = {
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.yes_ranges = da9063_da_writeable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063_da_writeable_ranges),
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};
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static const struct regmap_range da9063l_da_readable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_MON_A10_RES),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_T_OFFSET, DA9063_BB_REG_GP_ID_11),
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regmap_reg_range(DA9063_REG_DEVICE_ID, DA9063_REG_VARIANT_ID),
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};
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static const struct regmap_range da9063l_da_writeable_ranges[] = {
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regmap_reg_range(DA9063_REG_PAGE_CON, DA9063_REG_PAGE_CON),
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regmap_reg_range(DA9063_REG_FAULT_LOG, DA9063_REG_VSYS_MON),
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regmap_reg_range(DA9063_REG_SEQ, DA9063_REG_ID_32_31),
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regmap_reg_range(DA9063_REG_SEQ_A, DA9063_REG_AUTO3_LOW),
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regmap_reg_range(DA9063_REG_CONFIG_I, DA9063_BB_REG_MON_REG_4),
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regmap_reg_range(DA9063_BB_REG_GP_ID_0, DA9063_BB_REG_GP_ID_11),
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};
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static const struct regmap_access_table da9063l_da_readable_table = {
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.yes_ranges = da9063l_da_readable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063l_da_readable_ranges),
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};
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static const struct regmap_access_table da9063l_da_writeable_table = {
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.yes_ranges = da9063l_da_writeable_ranges,
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.n_yes_ranges = ARRAY_SIZE(da9063l_da_writeable_ranges),
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};
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static const struct regmap_range_cfg da9063_range_cfg[] = {
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{
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.range_min = DA9063_REG_PAGE_CON,
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.range_max = DA9063_REG_CONFIG_ID,
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.selector_reg = DA9063_REG_PAGE_CON,
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.selector_mask = 1 << DA9063_I2C_PAGE_SEL_SHIFT,
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.selector_shift = DA9063_I2C_PAGE_SEL_SHIFT,
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.window_start = 0,
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.window_len = 256,
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}
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};
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static struct regmap_config da9063_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.ranges = da9063_range_cfg,
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.num_ranges = ARRAY_SIZE(da9063_range_cfg),
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.max_register = DA9063_REG_CONFIG_ID,
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.cache_type = REGCACHE_RBTREE,
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};
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static const struct of_device_id da9063_dt_ids[] = {
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{ .compatible = "dlg,da9063", },
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{ .compatible = "dlg,da9063l", },
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{ }
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};
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MODULE_DEVICE_TABLE(of, da9063_dt_ids);
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static int da9063_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct da9063 *da9063;
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int ret;
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da9063 = devm_kzalloc(&i2c->dev, sizeof(struct da9063), GFP_KERNEL);
|
|
if (da9063 == NULL)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(i2c, da9063);
|
|
da9063->dev = &i2c->dev;
|
|
da9063->chip_irq = i2c->irq;
|
|
da9063->type = id->driver_data;
|
|
|
|
ret = da9063_get_device_type(i2c, da9063);
|
|
if (ret)
|
|
return ret;
|
|
|
|
switch (da9063->type) {
|
|
case PMIC_TYPE_DA9063:
|
|
switch (da9063->variant_code) {
|
|
case PMIC_DA9063_AD:
|
|
da9063_regmap_config.rd_table =
|
|
&da9063_ad_readable_table;
|
|
da9063_regmap_config.wr_table =
|
|
&da9063_ad_writeable_table;
|
|
da9063_regmap_config.volatile_table =
|
|
&da9063_ad_volatile_table;
|
|
break;
|
|
case PMIC_DA9063_BB:
|
|
case PMIC_DA9063_CA:
|
|
da9063_regmap_config.rd_table =
|
|
&da9063_bb_readable_table;
|
|
da9063_regmap_config.wr_table =
|
|
&da9063_bb_writeable_table;
|
|
da9063_regmap_config.volatile_table =
|
|
&da9063_bb_da_volatile_table;
|
|
break;
|
|
case PMIC_DA9063_DA:
|
|
da9063_regmap_config.rd_table =
|
|
&da9063_da_readable_table;
|
|
da9063_regmap_config.wr_table =
|
|
&da9063_da_writeable_table;
|
|
da9063_regmap_config.volatile_table =
|
|
&da9063_bb_da_volatile_table;
|
|
break;
|
|
default:
|
|
dev_err(da9063->dev,
|
|
"Chip variant not supported for DA9063\n");
|
|
return -ENODEV;
|
|
}
|
|
break;
|
|
case PMIC_TYPE_DA9063L:
|
|
switch (da9063->variant_code) {
|
|
case PMIC_DA9063_BB:
|
|
case PMIC_DA9063_CA:
|
|
da9063_regmap_config.rd_table =
|
|
&da9063l_bb_readable_table;
|
|
da9063_regmap_config.wr_table =
|
|
&da9063l_bb_writeable_table;
|
|
da9063_regmap_config.volatile_table =
|
|
&da9063l_bb_da_volatile_table;
|
|
break;
|
|
case PMIC_DA9063_DA:
|
|
da9063_regmap_config.rd_table =
|
|
&da9063l_da_readable_table;
|
|
da9063_regmap_config.wr_table =
|
|
&da9063l_da_writeable_table;
|
|
da9063_regmap_config.volatile_table =
|
|
&da9063l_bb_da_volatile_table;
|
|
break;
|
|
default:
|
|
dev_err(da9063->dev,
|
|
"Chip variant not supported for DA9063L\n");
|
|
return -ENODEV;
|
|
}
|
|
break;
|
|
default:
|
|
dev_err(da9063->dev, "Chip type not supported\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
da9063->regmap = devm_regmap_init_i2c(i2c, &da9063_regmap_config);
|
|
if (IS_ERR(da9063->regmap)) {
|
|
ret = PTR_ERR(da9063->regmap);
|
|
dev_err(da9063->dev, "Failed to allocate register map: %d\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
return da9063_device_init(da9063, i2c->irq);
|
|
}
|
|
|
|
static const struct i2c_device_id da9063_i2c_id[] = {
|
|
{ "da9063", PMIC_TYPE_DA9063 },
|
|
{ "da9063l", PMIC_TYPE_DA9063L },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, da9063_i2c_id);
|
|
|
|
static struct i2c_driver da9063_i2c_driver = {
|
|
.driver = {
|
|
.name = "da9063",
|
|
.of_match_table = of_match_ptr(da9063_dt_ids),
|
|
},
|
|
.probe = da9063_i2c_probe,
|
|
.id_table = da9063_i2c_id,
|
|
};
|
|
|
|
module_i2c_driver(da9063_i2c_driver);
|