From f615e6a64d23952d3c68b9ac92b4ef5fa5ebdf8a Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 2 Jul 2015 18:16:01 -0600 Subject: dm: power: Add support for S5M8767 regulators This PMIC is used with SoCs which need a combination of BUCKs and LDOs. The driver supports changing voltage and enabling/disabling each regulator. It supports the standard device tree binding and supports driver model. Signed-off-by: Simon Glass Acked-by: Przemyslaw Marczak --- drivers/power/regulator/Kconfig | 9 ++ drivers/power/regulator/Makefile | 1 + drivers/power/regulator/s5m8767.c | 269 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 279 insertions(+) create mode 100644 drivers/power/regulator/s5m8767.c (limited to 'drivers/power/regulator') diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index d090650..e85c692 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -32,6 +32,15 @@ config DM_REGULATOR_FIXED features for fixed value regulators. The driver implements get/set api for enable and get only for voltage value. +config REGULATOR_S5M8767 + bool "Enable support for S5M8767 regulator" + depends on DM_REGULATOR && PMIC_S5M8767 + ---help--- + This enables the regulator features of the S5M8767, allowing voltages + to be set, etc. The driver is not fully complete but supports most + common requirements, including all LDOs and BUCKs. This allows many + supplies to be set automatically using the device tree values. + config DM_REGULATOR_SANDBOX bool "Enable Driver Model for Sandbox PMIC regulator" depends on DM_REGULATOR && DM_PMIC_SANDBOX diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile index 43f4d2c..08d7b0d 100644 --- a/drivers/power/regulator/Makefile +++ b/drivers/power/regulator/Makefile @@ -8,5 +8,6 @@ obj-$(CONFIG_DM_REGULATOR) += regulator-uclass.o obj-$(CONFIG_DM_REGULATOR_MAX77686) += max77686.o obj-$(CONFIG_DM_REGULATOR_FIXED) += fixed.o +obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o obj-$(CONFIG_DM_REGULATOR_SANDBOX) += sandbox.o obj-$(CONFIG_REGULATOR_TPS65090) += tps65090_regulator.o diff --git a/drivers/power/regulator/s5m8767.c b/drivers/power/regulator/s5m8767.c new file mode 100644 index 0000000..93a3c94 --- /dev/null +++ b/drivers/power/regulator/s5m8767.c @@ -0,0 +1,269 @@ +/* + * Copyright (C) 2015 Google, Inc + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +DECLARE_GLOBAL_DATA_PTR; + +static const struct sec_voltage_desc buck_v1 = { + .max = 2225000, + .min = 650000, + .step = 6250, +}; + +static const struct sec_voltage_desc buck_v2 = { + .max = 1600000, + .min = 600000, + .step = 6250, +}; + +static const struct sec_voltage_desc buck_v3 = { + .max = 3000000, + .min = 750000, + .step = 12500, +}; + +static const struct sec_voltage_desc ldo_v1 = { + .max = 3950000, + .min = 800000, + .step = 50000, +}; + +static const struct sec_voltage_desc ldo_v2 = { + .max = 2375000, + .min = 800000, + .step = 25000, +}; + +static const struct s5m8767_para buck_param[] = { + /* + * | voltage ----| | enable -| voltage + * regnum addr bpos mask addr on desc + */ + {S5M8767_BUCK1, 0x33, 0x0, 0xff, 0x32, 0x3, &buck_v1}, + {S5M8767_BUCK2, 0x35, 0x0, 0xff, 0x34, 0x1, &buck_v2}, + {S5M8767_BUCK3, 0x3e, 0x0, 0xff, 0x3d, 0x1, &buck_v2}, + {S5M8767_BUCK4, 0x47, 0x0, 0xff, 0x46, 0x1, &buck_v2}, + {S5M8767_BUCK5, 0x50, 0x0, 0xff, 0x4f, 0x3, &buck_v1}, + {S5M8767_BUCK6, 0x55, 0x0, 0xff, 0x54, 0x3, &buck_v1}, + {S5M8767_BUCK7, 0x57, 0x0, 0xff, 0x56, 0x3, &buck_v3}, + {S5M8767_BUCK8, 0x59, 0x0, 0xff, 0x58, 0x3, &buck_v3}, + {S5M8767_BUCK9, 0x5b, 0x0, 0xff, 0x5a, 0x3, &buck_v3}, +}; + +static const struct s5m8767_para ldo_param[] = { + {S5M8767_LDO1, 0x5c, 0x0, 0x3f, 0x5c, 0x3, &ldo_v2}, + {S5M8767_LDO2, 0x5d, 0x0, 0x3f, 0x5d, 0x1, &ldo_v2}, + {S5M8767_LDO3, 0x61, 0x0, 0x3f, 0x61, 0x3, &ldo_v1}, + {S5M8767_LDO4, 0x62, 0x0, 0x3f, 0x62, 0x3, &ldo_v1}, + {S5M8767_LDO5, 0x63, 0x0, 0x3f, 0x63, 0x3, &ldo_v1}, + {S5M8767_LDO6, 0x64, 0x0, 0x3f, 0x64, 0x1, &ldo_v2}, + {S5M8767_LDO7, 0x65, 0x0, 0x3f, 0x65, 0x1, &ldo_v2}, + {S5M8767_LDO8, 0x66, 0x0, 0x3f, 0x66, 0x1, &ldo_v2}, + {S5M8767_LDO9, 0x67, 0x0, 0x3f, 0x67, 0x3, &ldo_v1}, + {S5M8767_LDO10, 0x68, 0x0, 0x3f, 0x68, 0x1, &ldo_v1}, + {S5M8767_LDO11, 0x69, 0x0, 0x3f, 0x69, 0x1, &ldo_v1}, + {S5M8767_LDO12, 0x6a, 0x0, 0x3f, 0x6a, 0x1, &ldo_v1}, + {S5M8767_LDO13, 0x6b, 0x0, 0x3f, 0x6b, 0x3, &ldo_v1}, + {S5M8767_LDO14, 0x6c, 0x0, 0x3f, 0x6c, 0x1, &ldo_v1}, + {S5M8767_LDO15, 0x6d, 0x0, 0x3f, 0x6d, 0x1, &ldo_v2}, + {S5M8767_LDO16, 0x6e, 0x0, 0x3f, 0x6e, 0x1, &ldo_v1}, + {S5M8767_LDO17, 0x6f, 0x0, 0x3f, 0x6f, 0x3, &ldo_v1}, + {S5M8767_LDO18, 0x70, 0x0, 0x3f, 0x70, 0x3, &ldo_v1}, + {S5M8767_LDO19, 0x71, 0x0, 0x3f, 0x71, 0x3, &ldo_v1}, + {S5M8767_LDO20, 0x72, 0x0, 0x3f, 0x72, 0x3, &ldo_v1}, + {S5M8767_LDO21, 0x73, 0x0, 0x3f, 0x73, 0x3, &ldo_v1}, + {S5M8767_LDO22, 0x74, 0x0, 0x3f, 0x74, 0x3, &ldo_v1}, + {S5M8767_LDO23, 0x75, 0x0, 0x3f, 0x75, 0x3, &ldo_v1}, + {S5M8767_LDO24, 0x76, 0x0, 0x3f, 0x76, 0x3, &ldo_v1}, + {S5M8767_LDO25, 0x77, 0x0, 0x3f, 0x77, 0x3, &ldo_v1}, + {S5M8767_LDO26, 0x78, 0x0, 0x3f, 0x78, 0x3, &ldo_v1}, + {S5M8767_LDO27, 0x79, 0x0, 0x3f, 0x79, 0x3, &ldo_v1}, + {S5M8767_LDO28, 0x7a, 0x0, 0x3f, 0x7a, 0x3, &ldo_v1}, +}; + +enum { + ENABLE_SHIFT = 6, + ENABLE_MASK = 3, +}; + +static int reg_get_value(struct udevice *dev, const struct s5m8767_para *param) +{ + const struct sec_voltage_desc *desc; + int ret, uv, val; + + ret = pmic_reg_read(dev->parent, param->vol_addr); + if (ret < 0) + return ret; + + desc = param->vol; + val = (ret >> param->vol_bitpos) & param->vol_bitmask; + uv = desc->min + val * desc->step; + + return uv; +} + +static int reg_set_value(struct udevice *dev, const struct s5m8767_para *param, + int uv) +{ + const struct sec_voltage_desc *desc; + int ret, val; + + desc = param->vol; + if (uv < desc->min || uv > desc->max) + return -EINVAL; + val = (uv - desc->min) / desc->step; + val = (val & param->vol_bitmask) << param->vol_bitpos; + ret = pmic_clrsetbits(dev->parent, param->vol_addr, + param->vol_bitmask << param->vol_bitpos, + val); + + return ret; +} + +static int s5m8767_ldo_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_platdata *uc_pdata; + + uc_pdata = dev_get_uclass_platdata(dev); + + uc_pdata->type = REGULATOR_TYPE_LDO; + uc_pdata->mode_count = 0; + + return 0; +} +static int ldo_get_value(struct udevice *dev) +{ + int ldo = dev->driver_data; + + return reg_get_value(dev, &ldo_param[ldo]); +} + +static int ldo_set_value(struct udevice *dev, int uv) +{ + int ldo = dev->driver_data; + + return reg_set_value(dev, &ldo_param[ldo], uv); +} + +static int reg_get_enable(struct udevice *dev, const struct s5m8767_para *param) +{ + bool enable; + int ret; + + ret = pmic_reg_read(dev->parent, param->reg_enaddr); + if (ret < 0) + return ret; + + enable = (ret >> ENABLE_SHIFT) & ENABLE_MASK; + + return enable; +} + +static int reg_set_enable(struct udevice *dev, const struct s5m8767_para *param, + bool enable) +{ + int ret; + + ret = pmic_reg_read(dev->parent, param->reg_enaddr); + if (ret < 0) + return ret; + + ret = pmic_clrsetbits(dev->parent, param->reg_enaddr, + ENABLE_MASK << ENABLE_SHIFT, + enable ? param->reg_enbiton << ENABLE_SHIFT : 0); + + return ret; +} + +static bool ldo_get_enable(struct udevice *dev) +{ + int ldo = dev->driver_data; + + return reg_get_enable(dev, &ldo_param[ldo]); +} + +static int ldo_set_enable(struct udevice *dev, bool enable) +{ + int ldo = dev->driver_data; + + return reg_set_enable(dev, &ldo_param[ldo], enable); +} + +static int s5m8767_buck_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_platdata *uc_pdata; + + uc_pdata = dev_get_uclass_platdata(dev); + + uc_pdata->type = REGULATOR_TYPE_BUCK; + uc_pdata->mode_count = 0; + + return 0; +} + +static int buck_get_value(struct udevice *dev) +{ + int buck = dev->driver_data; + + return reg_get_value(dev, &buck_param[buck]); +} + +static int buck_set_value(struct udevice *dev, int uv) +{ + int buck = dev->driver_data; + + return reg_set_value(dev, &buck_param[buck], uv); +} + +static bool buck_get_enable(struct udevice *dev) +{ + int buck = dev->driver_data; + + return reg_get_enable(dev, &buck_param[buck]); +} + +static int buck_set_enable(struct udevice *dev, bool enable) +{ + int buck = dev->driver_data; + + return reg_set_enable(dev, &buck_param[buck], enable); +} + +static const struct dm_regulator_ops s5m8767_ldo_ops = { + .get_value = ldo_get_value, + .set_value = ldo_set_value, + .get_enable = ldo_get_enable, + .set_enable = ldo_set_enable, +}; + +U_BOOT_DRIVER(s5m8767_ldo) = { + .name = S5M8767_LDO_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &s5m8767_ldo_ops, + .probe = s5m8767_ldo_probe, +}; + +static const struct dm_regulator_ops s5m8767_buck_ops = { + .get_value = buck_get_value, + .set_value = buck_set_value, + .get_enable = buck_get_enable, + .set_enable = buck_set_enable, +}; + +U_BOOT_DRIVER(s5m8767_buck) = { + .name = S5M8767_BUCK_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &s5m8767_buck_ops, + .probe = s5m8767_buck_probe, +}; -- cgit v1.1