/* * ROHM BD9571MWV-M MFD driver * * Copyright (C) 2017 Marek Vasut * * 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 #include #include #include #include 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_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_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 = devm_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 "); MODULE_DESCRIPTION("BD9571MWV PMIC Driver"); MODULE_LICENSE("GPL v2");