From mboxrd@z Thu Jan 1 00:00:00 1970 From: Przemyslaw Marczak Date: Fri, 10 Jul 2015 13:52:49 +0200 Subject: [U-Boot] [PATCH 24/55] dm: power: Add support for S5M8767 regulators In-Reply-To: <1435882592-487-25-git-send-email-sjg@chromium.org> References: <1435882592-487-1-git-send-email-sjg@chromium.org> <1435882592-487-25-git-send-email-sjg@chromium.org> Message-ID: <559FB211.3080802@samsung.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hello Simon, On 07/03/2015 02:16 AM, Simon Glass wrote: > 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 > --- > > 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 > > 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, > +}; > Acked-by: Przemyslaw Marczak Regards -- Przemyslaw Marczak Samsung R&D Institute Poland Samsung Electronics p.marczak at samsung.com