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bd9571mwv.c
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bd9571mwv.c
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// SPDX-License-Identifier: GPL-2.0-only
/*
* ROHM BD9571MWV-M and BD9574MVF-M core driver
*
* Copyright (C) 2017 Marek Vasut <[email protected]>
* Copyright (C) 2020 Renesas Electronics Corporation
*
* Based on the TPS65086 driver
*/
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
#include <linux/mfd/rohm-generic.h>
#include <linux/module.h>
#include <linux/mfd/bd9571mwv.h>
static const struct mfd_cell bd9571mwv_cells[] = {
{ .name = "bd9571mwv-regulator", },
{ .name = "bd9571mwv-gpio", },
};
static const struct regmap_range bd9571mwv_readable_yes_ranges[] = {
regmap_reg_range(BD9571MWV_VENDOR_CODE, BD9571MWV_PRODUCT_REVISION),
regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
regmap_reg_range(BD9571MWV_AVS_SET_MONI, BD9571MWV_AVS_DVFS_VID(3)),
regmap_reg_range(BD9571MWV_VD18_VID, BD9571MWV_VD33_VID),
regmap_reg_range(BD9571MWV_DVFS_VINIT, BD9571MWV_DVFS_VINIT),
regmap_reg_range(BD9571MWV_DVFS_SETVMAX, BD9571MWV_DVFS_MONIVDAC),
regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INTMASK),
regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
};
static const struct regmap_access_table bd9571mwv_readable_table = {
.yes_ranges = bd9571mwv_readable_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(bd9571mwv_readable_yes_ranges),
};
static const struct regmap_range bd9571mwv_writable_yes_ranges[] = {
regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
regmap_reg_range(BD9571MWV_AVS_VD09_VID(0), BD9571MWV_AVS_VD09_VID(3)),
regmap_reg_range(BD9571MWV_DVFS_SETVID, BD9571MWV_DVFS_SETVID),
regmap_reg_range(BD9571MWV_GPIO_DIR, BD9571MWV_GPIO_OUT),
regmap_reg_range(BD9571MWV_GPIO_INT_SET, BD9571MWV_GPIO_INTMASK),
regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
};
static const struct regmap_access_table bd9571mwv_writable_table = {
.yes_ranges = bd9571mwv_writable_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(bd9571mwv_writable_yes_ranges),
};
static const struct regmap_range bd9571mwv_volatile_yes_ranges[] = {
regmap_reg_range(BD9571MWV_DVFS_MONIVDAC, BD9571MWV_DVFS_MONIVDAC),
regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INT),
regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTREQ),
};
static const struct regmap_access_table bd9571mwv_volatile_table = {
.yes_ranges = bd9571mwv_volatile_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(bd9571mwv_volatile_yes_ranges),
};
static const struct regmap_config bd9571mwv_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.cache_type = REGCACHE_RBTREE,
.rd_table = &bd9571mwv_readable_table,
.wr_table = &bd9571mwv_writable_table,
.volatile_table = &bd9571mwv_volatile_table,
.max_register = 0xff,
};
static const struct regmap_irq bd9571mwv_irqs[] = {
REGMAP_IRQ_REG(BD9571MWV_IRQ_MD1, 0,
BD9571MWV_INT_INTREQ_MD1_INT),
REGMAP_IRQ_REG(BD9571MWV_IRQ_MD2_E1, 0,
BD9571MWV_INT_INTREQ_MD2_E1_INT),
REGMAP_IRQ_REG(BD9571MWV_IRQ_MD2_E2, 0,
BD9571MWV_INT_INTREQ_MD2_E2_INT),
REGMAP_IRQ_REG(BD9571MWV_IRQ_PROT_ERR, 0,
BD9571MWV_INT_INTREQ_PROT_ERR_INT),
REGMAP_IRQ_REG(BD9571MWV_IRQ_GP, 0,
BD9571MWV_INT_INTREQ_GP_INT),
REGMAP_IRQ_REG(BD9571MWV_IRQ_128H_OF, 0,
BD9571MWV_INT_INTREQ_128H_OF_INT),
REGMAP_IRQ_REG(BD9571MWV_IRQ_WDT_OF, 0,
BD9571MWV_INT_INTREQ_WDT_OF_INT),
REGMAP_IRQ_REG(BD9571MWV_IRQ_BKUP_TRG, 0,
BD9571MWV_INT_INTREQ_BKUP_TRG_INT),
};
static struct regmap_irq_chip bd9571mwv_irq_chip = {
.name = "bd9571mwv",
.status_base = BD9571MWV_INT_INTREQ,
.mask_base = BD9571MWV_INT_INTMASK,
.ack_base = BD9571MWV_INT_INTREQ,
.init_ack_masked = true,
.num_regs = 1,
.irqs = bd9571mwv_irqs,
.num_irqs = ARRAY_SIZE(bd9571mwv_irqs),
};
static const struct mfd_cell bd9574mwf_cells[] = {
{ .name = "bd9574mwf-regulator", },
{ .name = "bd9574mwf-gpio", },
};
static const struct regmap_range bd9574mwf_readable_yes_ranges[] = {
regmap_reg_range(BD9571MWV_VENDOR_CODE, BD9571MWV_PRODUCT_REVISION),
regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
regmap_reg_range(BD9571MWV_DVFS_VINIT, BD9571MWV_DVFS_SETVMAX),
regmap_reg_range(BD9571MWV_DVFS_SETVID, BD9571MWV_DVFS_MONIVDAC),
regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INTMASK),
regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
};
static const struct regmap_access_table bd9574mwf_readable_table = {
.yes_ranges = bd9574mwf_readable_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(bd9574mwf_readable_yes_ranges),
};
static const struct regmap_range bd9574mwf_writable_yes_ranges[] = {
regmap_reg_range(BD9571MWV_BKUP_MODE_CNT, BD9571MWV_BKUP_MODE_CNT),
regmap_reg_range(BD9571MWV_DVFS_SETVID, BD9571MWV_DVFS_SETVID),
regmap_reg_range(BD9571MWV_GPIO_DIR, BD9571MWV_GPIO_OUT),
regmap_reg_range(BD9571MWV_GPIO_INT_SET, BD9571MWV_GPIO_INTMASK),
regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTMASK),
};
static const struct regmap_access_table bd9574mwf_writable_table = {
.yes_ranges = bd9574mwf_writable_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(bd9574mwf_writable_yes_ranges),
};
static const struct regmap_range bd9574mwf_volatile_yes_ranges[] = {
regmap_reg_range(BD9571MWV_DVFS_MONIVDAC, BD9571MWV_DVFS_MONIVDAC),
regmap_reg_range(BD9571MWV_GPIO_IN, BD9571MWV_GPIO_IN),
regmap_reg_range(BD9571MWV_GPIO_INT, BD9571MWV_GPIO_INT),
regmap_reg_range(BD9571MWV_INT_INTREQ, BD9571MWV_INT_INTREQ),
};
static const struct regmap_access_table bd9574mwf_volatile_table = {
.yes_ranges = bd9574mwf_volatile_yes_ranges,
.n_yes_ranges = ARRAY_SIZE(bd9574mwf_volatile_yes_ranges),
};
static const struct regmap_config bd9574mwf_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.cache_type = REGCACHE_RBTREE,
.rd_table = &bd9574mwf_readable_table,
.wr_table = &bd9574mwf_writable_table,
.volatile_table = &bd9574mwf_volatile_table,
.max_register = 0xff,
};
static struct regmap_irq_chip bd9574mwf_irq_chip = {
.name = "bd9574mwf",
.status_base = BD9571MWV_INT_INTREQ,
.mask_base = BD9571MWV_INT_INTMASK,
.ack_base = BD9571MWV_INT_INTREQ,
.init_ack_masked = true,
.num_regs = 1,
.irqs = bd9571mwv_irqs,
.num_irqs = ARRAY_SIZE(bd9571mwv_irqs),
};
static int bd957x_identify(struct device *dev, struct regmap *regmap)
{
unsigned int value;
int ret;
ret = regmap_read(regmap, BD9571MWV_VENDOR_CODE, &value);
if (ret) {
dev_err(dev, "Failed to read vendor code register (ret=%i)\n",
ret);
return ret;
}
if (value != BD9571MWV_VENDOR_CODE_VAL) {
dev_err(dev, "Invalid vendor code ID %02x (expected %02x)\n",
value, BD9571MWV_VENDOR_CODE_VAL);
return -EINVAL;
}
ret = regmap_read(regmap, BD9571MWV_PRODUCT_CODE, &value);
if (ret) {
dev_err(dev, "Failed to read product code register (ret=%i)\n",
ret);
return ret;
}
ret = regmap_read(regmap, BD9571MWV_PRODUCT_REVISION, &value);
if (ret) {
dev_err(dev, "Failed to read revision register (ret=%i)\n",
ret);
return ret;
}
return 0;
}
static int bd9571mwv_probe(struct i2c_client *client)
{
const struct regmap_config *regmap_config;
const struct regmap_irq_chip *irq_chip;
const struct mfd_cell *cells;
struct device *dev = &client->dev;
struct regmap *regmap;
struct regmap_irq_chip_data *irq_data;
int ret, num_cells, irq = client->irq;
/* Read the PMIC product code */
ret = i2c_smbus_read_byte_data(client, BD9571MWV_PRODUCT_CODE);
if (ret < 0) {
dev_err(dev, "Failed to read product code\n");
return ret;
}
switch (ret) {
case BD9571MWV_PRODUCT_CODE_BD9571MWV:
regmap_config = &bd9571mwv_regmap_config;
irq_chip = &bd9571mwv_irq_chip;
cells = bd9571mwv_cells;
num_cells = ARRAY_SIZE(bd9571mwv_cells);
break;
case BD9571MWV_PRODUCT_CODE_BD9574MWF:
regmap_config = &bd9574mwf_regmap_config;
irq_chip = &bd9574mwf_irq_chip;
cells = bd9574mwf_cells;
num_cells = ARRAY_SIZE(bd9574mwf_cells);
break;
default:
dev_err(dev, "Unsupported device 0x%x\n", ret);
return -ENODEV;
}
regmap = devm_regmap_init_i2c(client, regmap_config);
if (IS_ERR(regmap)) {
dev_err(dev, "Failed to initialize register map\n");
return PTR_ERR(regmap);
}
ret = bd957x_identify(dev, regmap);
if (ret)
return ret;
ret = devm_regmap_add_irq_chip(dev, regmap, irq, IRQF_ONESHOT, 0,
irq_chip, &irq_data);
if (ret) {
dev_err(dev, "Failed to register IRQ chip\n");
return ret;
}
return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, cells, num_cells,
NULL, 0, regmap_irq_get_domain(irq_data));
}
static const struct of_device_id bd9571mwv_of_match_table[] = {
{ .compatible = "rohm,bd9571mwv", },
{ .compatible = "rohm,bd9574mwf", },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, bd9571mwv_of_match_table);
static const struct i2c_device_id bd9571mwv_id_table[] = {
{ "bd9571mwv", 0 },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(i2c, bd9571mwv_id_table);
static struct i2c_driver bd9571mwv_driver = {
.driver = {
.name = "bd9571mwv",
.of_match_table = bd9571mwv_of_match_table,
},
.probe = bd9571mwv_probe,
.id_table = bd9571mwv_id_table,
};
module_i2c_driver(bd9571mwv_driver);
MODULE_AUTHOR("Marek Vasut <[email protected]>");
MODULE_DESCRIPTION("BD9571MWV PMIC Driver");
MODULE_LICENSE("GPL v2");