234 lines
6.9 KiB
C
234 lines
6.9 KiB
C
/*
|
|
* ROHM BD9571MWV-M MFD driver
|
|
*
|
|
* Copyright (C) 2017 Marek Vasut <marek.vasut+renesas@gmail.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
|
* kind, whether expressed or implied; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License version 2 for more details.
|
|
*
|
|
* Based on the TPS65086 driver
|
|
*/
|
|
|
|
#include <linux/i2c.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/mfd/core.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 int bd9571mwv_identify(struct bd9571mwv *bd)
|
|
{
|
|
struct device *dev = bd->dev;
|
|
unsigned int value;
|
|
int ret;
|
|
|
|
ret = regmap_read(bd->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(bd->regmap, BD9571MWV_PRODUCT_CODE, &value);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to read product code register (ret=%i)\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
if (value != BD9571MWV_PRODUCT_CODE_VAL) {
|
|
dev_err(dev, "Invalid product code ID %02x (expected %02x)\n",
|
|
value, BD9571MWV_PRODUCT_CODE_VAL);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = regmap_read(bd->regmap, BD9571MWV_PRODUCT_REVISION, &value);
|
|
if (ret) {
|
|
dev_err(dev, "Failed to read revision register (ret=%i)\n",
|
|
ret);
|
|
return ret;
|
|
}
|
|
|
|
dev_info(dev, "Device: BD9571MWV rev. %d\n", value & 0xff);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bd9571mwv_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *ids)
|
|
{
|
|
struct bd9571mwv *bd;
|
|
int ret;
|
|
|
|
bd = devm_kzalloc(&client->dev, sizeof(*bd), GFP_KERNEL);
|
|
if (!bd)
|
|
return -ENOMEM;
|
|
|
|
i2c_set_clientdata(client, bd);
|
|
bd->dev = &client->dev;
|
|
bd->irq = client->irq;
|
|
|
|
bd->regmap = devm_regmap_init_i2c(client, &bd9571mwv_regmap_config);
|
|
if (IS_ERR(bd->regmap)) {
|
|
dev_err(bd->dev, "Failed to initialize register map\n");
|
|
return PTR_ERR(bd->regmap);
|
|
}
|
|
|
|
ret = bd9571mwv_identify(bd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = regmap_add_irq_chip(bd->regmap, bd->irq, IRQF_ONESHOT, 0,
|
|
&bd9571mwv_irq_chip, &bd->irq_data);
|
|
if (ret) {
|
|
dev_err(bd->dev, "Failed to register IRQ chip\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = mfd_add_devices(bd->dev, PLATFORM_DEVID_AUTO, bd9571mwv_cells,
|
|
ARRAY_SIZE(bd9571mwv_cells), NULL, 0,
|
|
regmap_irq_get_domain(bd->irq_data));
|
|
if (ret) {
|
|
regmap_del_irq_chip(bd->irq, bd->irq_data);
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bd9571mwv_remove(struct i2c_client *client)
|
|
{
|
|
struct bd9571mwv *bd = i2c_get_clientdata(client);
|
|
|
|
regmap_del_irq_chip(bd->irq, bd->irq_data);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id bd9571mwv_of_match_table[] = {
|
|
{ .compatible = "rohm,bd9571mwv", },
|
|
{ /* 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,
|
|
.remove = bd9571mwv_remove,
|
|
.id_table = bd9571mwv_id_table,
|
|
};
|
|
module_i2c_driver(bd9571mwv_driver);
|
|
|
|
MODULE_AUTHOR("Marek Vasut <marek.vasut+renesas@gmail.com>");
|
|
MODULE_DESCRIPTION("BD9571MWV PMIC Driver");
|
|
MODULE_LICENSE("GPL v2");
|