forked from Minki/linux
9ece3601ae
This update adds new regmap tables to support the latest DA silicon which will automatically be selected based on the chip and variant information read from the device. Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct da9063 *da9063;
|
|
int ret;
|
|
|
|
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);
|