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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 i2c_device_id *ids)
- {
- 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");
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