// SPDX-License-Identifier: GPL-2.0+ /* * Copyright 2012 Samsung Electronics Co., Ltd * http://www.samsung.com * Copyright 2025 Linaro Ltd. * * Samsung SxM core driver */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "sec-core.h" static const struct mfd_cell s5m8767_devs[] = { MFD_CELL_NAME("s5m8767-pmic"), MFD_CELL_NAME("s5m-rtc"), MFD_CELL_OF("s5m8767-clk", NULL, NULL, 0, 0, "samsung,s5m8767-clk"), }; static const struct mfd_cell s2dos05_devs[] = { MFD_CELL_NAME("s2dos05-regulator"), }; static const struct mfd_cell s2mpg10_devs[] = { MFD_CELL_NAME("s2mpg10-meter"), MFD_CELL_NAME("s2mpg10-regulator"), MFD_CELL_NAME("s2mpg10-rtc"), MFD_CELL_OF("s2mpg10-clk", NULL, NULL, 0, 0, "samsung,s2mpg10-clk"), MFD_CELL_OF("s2mpg10-gpio", NULL, NULL, 0, 0, "samsung,s2mpg10-gpio"), }; static const struct mfd_cell s2mps11_devs[] = { MFD_CELL_NAME("s2mps11-regulator"), MFD_CELL_NAME("s2mps14-rtc"), MFD_CELL_OF("s2mps11-clk", NULL, NULL, 0, 0, "samsung,s2mps11-clk"), }; static const struct mfd_cell s2mps13_devs[] = { MFD_CELL_NAME("s2mps13-regulator"), MFD_CELL_NAME("s2mps13-rtc"), MFD_CELL_OF("s2mps13-clk", NULL, NULL, 0, 0, "samsung,s2mps13-clk"), }; static const struct mfd_cell s2mps14_devs[] = { MFD_CELL_NAME("s2mps14-regulator"), MFD_CELL_NAME("s2mps14-rtc"), MFD_CELL_OF("s2mps14-clk", NULL, NULL, 0, 0, "samsung,s2mps14-clk"), }; static const struct mfd_cell s2mps15_devs[] = { MFD_CELL_NAME("s2mps15-regulator"), MFD_CELL_NAME("s2mps15-rtc"), MFD_CELL_OF("s2mps13-clk", NULL, NULL, 0, 0, "samsung,s2mps13-clk"), }; static const struct mfd_cell s2mpa01_devs[] = { MFD_CELL_NAME("s2mpa01-pmic"), MFD_CELL_NAME("s2mps14-rtc"), }; static const struct mfd_cell s2mpu02_devs[] = { MFD_CELL_NAME("s2mpu02-regulator"), }; static const struct mfd_cell s2mpu05_devs[] = { MFD_CELL_NAME("s2mpu05-regulator"), MFD_CELL_NAME("s2mps15-rtc"), }; static void sec_pmic_dump_rev(struct sec_pmic_dev *sec_pmic) { unsigned int val; /* For s2mpg1x, the revision is in a different regmap */ if (sec_pmic->device_type == S2MPG10) return; /* For each device type, the REG_ID is always the first register */ if (!regmap_read(sec_pmic->regmap_pmic, S2MPS11_REG_ID, &val)) dev_dbg(sec_pmic->dev, "Revision: 0x%x\n", val); } static void sec_pmic_configure(struct sec_pmic_dev *sec_pmic) { int err; if (sec_pmic->device_type != S2MPS13X) return; if (sec_pmic->pdata->disable_wrstbi) { /* * If WRSTBI pin is pulled down this feature must be disabled * because each Suspend to RAM will trigger buck voltage reset * to default values. */ err = regmap_update_bits(sec_pmic->regmap_pmic, S2MPS13_REG_WRSTBI, S2MPS13_REG_WRSTBI_MASK, 0x0); if (err) dev_warn(sec_pmic->dev, "Cannot initialize WRSTBI config: %d\n", err); } } /* * Only the common platform data elements for s5m8767 are parsed here from the * device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and * others have to parse their own platform data elements from device tree. * * The s5m8767 platform data structure is instantiated here and the drivers for * the sub-modules need not instantiate another instance while parsing their * platform data. */ static struct sec_platform_data * sec_pmic_parse_dt_pdata(struct device *dev) { struct sec_platform_data *pd; pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); if (!pd) return ERR_PTR(-ENOMEM); pd->manual_poweroff = of_property_read_bool(dev->of_node, "samsung,s2mps11-acokb-ground"); pd->disable_wrstbi = of_property_read_bool(dev->of_node, "samsung,s2mps11-wrstbi-ground"); return pd; } int sec_pmic_probe(struct device *dev, int device_type, unsigned int irq, struct regmap *regmap, struct i2c_client *client) { struct sec_platform_data *pdata; const struct mfd_cell *sec_devs; struct sec_pmic_dev *sec_pmic; int ret, num_sec_devs; sec_pmic = devm_kzalloc(dev, sizeof(*sec_pmic), GFP_KERNEL); if (!sec_pmic) return -ENOMEM; dev_set_drvdata(dev, sec_pmic); sec_pmic->dev = dev; sec_pmic->device_type = device_type; sec_pmic->i2c = client; sec_pmic->irq = irq; sec_pmic->regmap_pmic = regmap; pdata = sec_pmic_parse_dt_pdata(sec_pmic->dev); if (IS_ERR(pdata)) { ret = PTR_ERR(pdata); return ret; } sec_pmic->pdata = pdata; ret = sec_irq_init(sec_pmic); if (ret) return ret; pm_runtime_set_active(sec_pmic->dev); switch (sec_pmic->device_type) { case S5M8767X: sec_devs = s5m8767_devs; num_sec_devs = ARRAY_SIZE(s5m8767_devs); break; case S2DOS05: sec_devs = s2dos05_devs; num_sec_devs = ARRAY_SIZE(s2dos05_devs); break; case S2MPA01: sec_devs = s2mpa01_devs; num_sec_devs = ARRAY_SIZE(s2mpa01_devs); break; case S2MPG10: sec_devs = s2mpg10_devs; num_sec_devs = ARRAY_SIZE(s2mpg10_devs); break; case S2MPS11X: sec_devs = s2mps11_devs; num_sec_devs = ARRAY_SIZE(s2mps11_devs); break; case S2MPS13X: sec_devs = s2mps13_devs; num_sec_devs = ARRAY_SIZE(s2mps13_devs); break; case S2MPS14X: sec_devs = s2mps14_devs; num_sec_devs = ARRAY_SIZE(s2mps14_devs); break; case S2MPS15X: sec_devs = s2mps15_devs; num_sec_devs = ARRAY_SIZE(s2mps15_devs); break; case S2MPU02: sec_devs = s2mpu02_devs; num_sec_devs = ARRAY_SIZE(s2mpu02_devs); break; case S2MPU05: sec_devs = s2mpu05_devs; num_sec_devs = ARRAY_SIZE(s2mpu05_devs); break; default: return dev_err_probe(sec_pmic->dev, -EINVAL, "Unsupported device type %d\n", sec_pmic->device_type); } ret = devm_mfd_add_devices(sec_pmic->dev, -1, sec_devs, num_sec_devs, NULL, 0, NULL); if (ret) return ret; sec_pmic_configure(sec_pmic); sec_pmic_dump_rev(sec_pmic); return ret; } EXPORT_SYMBOL_GPL(sec_pmic_probe); void sec_pmic_shutdown(struct device *dev) { struct sec_pmic_dev *sec_pmic = dev_get_drvdata(dev); unsigned int reg, mask; if (!sec_pmic->pdata->manual_poweroff) return; switch (sec_pmic->device_type) { case S2MPS11X: reg = S2MPS11_REG_CTRL1; mask = S2MPS11_CTRL1_PWRHOLD_MASK; break; default: /* * Currently only one board with S2MPS11 needs this, so just * ignore the rest. */ dev_warn(sec_pmic->dev, "Unsupported device %d for manual power off\n", sec_pmic->device_type); return; } regmap_update_bits(sec_pmic->regmap_pmic, reg, mask, 0); } EXPORT_SYMBOL_GPL(sec_pmic_shutdown); static int sec_pmic_suspend(struct device *dev) { struct sec_pmic_dev *sec_pmic = dev_get_drvdata(dev); if (device_may_wakeup(dev)) enable_irq_wake(sec_pmic->irq); /* * PMIC IRQ must be disabled during suspend for RTC alarm * to work properly. * When device is woken up from suspend, an * interrupt occurs before resuming I2C bus controller. * The interrupt is handled by regmap_irq_thread which tries * to read RTC registers. This read fails (I2C is still * suspended) and RTC Alarm interrupt is disabled. */ disable_irq(sec_pmic->irq); return 0; } static int sec_pmic_resume(struct device *dev) { struct sec_pmic_dev *sec_pmic = dev_get_drvdata(dev); if (device_may_wakeup(dev)) disable_irq_wake(sec_pmic->irq); enable_irq(sec_pmic->irq); return 0; } DEFINE_SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume); EXPORT_SYMBOL_GPL(sec_pmic_pm_ops); MODULE_AUTHOR("Chanwoo Choi "); MODULE_AUTHOR("Krzysztof Kozlowski "); MODULE_AUTHOR("Sangbeom Kim "); MODULE_AUTHOR("André Draszik "); MODULE_DESCRIPTION("Core driver for the Samsung S5M"); MODULE_LICENSE("GPL");