diff options
author | Keerthy <j-keerthy@ti.com> | 2016-09-30 09:20:44 +0530 |
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committer | Simon Glass <sjg@chromium.org> | 2016-10-11 10:17:05 -0600 |
commit | 884d88bc8bf83d15f806350b2a1b86ff73de47f0 (patch) | |
tree | d4206dd1b34ef20b41d278ae0e1139cafe242427 /drivers | |
parent | 33621d247e771168ebaab2218d02e625371d144a (diff) | |
download | u-boot-imx-884d88bc8bf83d15f806350b2a1b86ff73de47f0.zip u-boot-imx-884d88bc8bf83d15f806350b2a1b86ff73de47f0.tar.gz u-boot-imx-884d88bc8bf83d15f806350b2a1b86ff73de47f0.tar.bz2 |
power: regulator: palmas: Add regulator support
The driver provides regulator set/get voltage
enable/disable functions for palmas family of PMICs.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/power/regulator/Kconfig | 8 | ||||
-rw-r--r-- | drivers/power/regulator/Makefile | 1 | ||||
-rw-r--r-- | drivers/power/regulator/palmas_regulator.c | 453 |
3 files changed, 462 insertions, 0 deletions
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index 255eccf..461891c 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -133,3 +133,11 @@ config REGULATOR_TPS65090 regulators, one for each FET. The standard regulator interface is supported, but it is only possible to turn the regulators on or off. There is no voltage/current control. + +config DM_REGULATOR_PALMAS + bool "Enable driver for PALMAS PMIC regulators" + depends on PMIC_PALMAS + ---help--- + This enables implementation of driver-model regulator uclass + features for REGULATOR PALMAS and the family of PALMAS PMICs. + The driver implements get/set api for: value and enable. diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile index e9ae22e..c979b51 100644 --- a/drivers/power/regulator/Makefile +++ b/drivers/power/regulator/Makefile @@ -16,3 +16,4 @@ obj-$(CONFIG_REGULATOR_RK808) += rk808.o obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o obj-$(CONFIG_DM_REGULATOR_SANDBOX) += sandbox.o obj-$(CONFIG_REGULATOR_TPS65090) += tps65090_regulator.o +obj-$(CONFIG_$(SPL_)DM_REGULATOR_PALMAS) += palmas_regulator.o diff --git a/drivers/power/regulator/palmas_regulator.c b/drivers/power/regulator/palmas_regulator.c new file mode 100644 index 0000000..cce7cd2 --- /dev/null +++ b/drivers/power/regulator/palmas_regulator.c @@ -0,0 +1,453 @@ +/* + * (C) Copyright 2016 + * Texas Instruments Incorporated, <www.ti.com> + * + * Keerthy <j-keerthy@ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <fdtdec.h> +#include <errno.h> +#include <dm.h> +#include <i2c.h> +#include <power/pmic.h> +#include <power/regulator.h> +#include <power/palmas.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define REGULATOR_ON 0x1 +#define REGULATOR_OFF 0x0 + +#define SMPS_MODE_MASK 0x3 +#define SMPS_MODE_SHIFT 0x0 +#define LDO_MODE_MASK 0x1 +#define LDO_MODE_SHIFT 0x0 + +static const char palmas_smps_ctrl[][PALMAS_SMPS_NUM] = { + {0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38, 0x3c}, + {0x20, 0x24, 0x28, 0x2c, 0x30, 0x34, 0x38}, + {0x20, 0x24, 0x2c, 0x30, 0x38}, +}; + +static const char palmas_smps_volt[][PALMAS_SMPS_NUM] = { + {0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b, 0x3c}, + {0x23, 0x27, 0x2b, 0x2f, 0x33, 0x37, 0x3b}, + {0x23, 0x27, 0x2f, 0x33, 0x3B} +}; + +static const char palmas_ldo_ctrl[][PALMAS_LDO_NUM] = { + {0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64}, + {0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, 0x60, 0x62, 0x64}, + {0x50, 0x52, 0x54, 0x5e, 0x62} +}; + +static const char palmas_ldo_volt[][PALMAS_LDO_NUM] = { + {0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65}, + {0x51, 0x53, 0x55, 0x57, 0x59, 0x5b, 0x5d, 0x5f, 0x61, 0x63, 0x65}, + {0x51, 0x53, 0x55, 0x5f, 0x63} +}; + +static int palmas_smps_enable(struct udevice *dev, int op, bool *enable) +{ + int ret; + unsigned int adr; + struct dm_regulator_uclass_platdata *uc_pdata; + + uc_pdata = dev_get_uclass_platdata(dev); + adr = uc_pdata->ctrl_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + ret &= PALMAS_SMPS_STATUS_MASK; + + if (ret) + *enable = true; + else + *enable = false; + + return 0; + } else if (op == PMIC_OP_SET) { + if (*enable) + ret |= PALMAS_SMPS_MODE_MASK; + else + ret &= ~(PALMAS_SMPS_MODE_MASK); + + ret = pmic_reg_write(dev->parent, adr, ret); + if (ret) + return ret; + } + + return 0; +} + +static int palmas_smps_volt2hex(int uV) +{ + if (uV > PALMAS_LDO_VOLT_MAX) + return -EINVAL; + + if (uV > 1650000) + return (uV - 1000000) / 20000 + 0x6; + + if (uV == 500000) + return 0x6; + else + return 0x6 + ((uV - 500000) / 10000); +} + +static int palmas_smps_hex2volt(int hex, bool range) +{ + unsigned int uV = 0; + + if (hex > PALMAS_SMPS_VOLT_MAX_HEX) + return -EINVAL; + + if (hex < 0x7) + uV = 500000; + else + uV = 500000 + (hex - 0x6) * 10000; + + if (range) + uV *= 2; + + return uV; +} + +static int palmas_smps_val(struct udevice *dev, int op, int *uV) +{ + unsigned int hex, adr; + int ret; + bool range; + struct dm_regulator_uclass_platdata *uc_pdata; + + uc_pdata = dev_get_uclass_platdata(dev); + + if (op == PMIC_OP_GET) + *uV = 0; + + adr = uc_pdata->volt_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + if (ret & PALMAS_SMPS_RANGE_MASK) + range = true; + else + range = false; + + ret &= PALMAS_SMPS_VOLT_MASK; + ret = palmas_smps_hex2volt(ret, range); + if (ret < 0) + return ret; + *uV = ret; + + return 0; + } + + hex = palmas_smps_volt2hex(*uV); + if (hex < 0) + return hex; + + ret &= ~PALMAS_SMPS_VOLT_MASK; + ret |= hex; + if (*uV > 1650000) + ret |= PALMAS_SMPS_RANGE_MASK; + + return pmic_reg_write(dev->parent, adr, ret); +} + +static int palmas_ldo_enable(struct udevice *dev, int op, bool *enable) +{ + int ret; + unsigned int adr; + struct dm_regulator_uclass_platdata *uc_pdata; + + uc_pdata = dev_get_uclass_platdata(dev); + adr = uc_pdata->ctrl_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + ret &= PALMAS_LDO_STATUS_MASK; + + if (ret) + *enable = true; + else + *enable = false; + + return 0; + } else if (op == PMIC_OP_SET) { + if (*enable) + ret |= PALMAS_LDO_MODE_MASK; + else + ret &= ~(PALMAS_LDO_MODE_MASK); + + ret = pmic_reg_write(dev->parent, adr, ret); + if (ret) + return ret; + } + + return 0; +} + +static int palmas_ldo_volt2hex(int uV) +{ + if (uV > PALMAS_LDO_VOLT_MAX) + return -EINVAL; + + return (uV - 850000) / 50000; +} + +static int palmas_ldo_hex2volt(int hex) +{ + if (hex > PALMAS_LDO_VOLT_MAX_HEX) + return -EINVAL; + + if (!hex) + return 0; + + return (hex * 50000) + 850000; +} + +static int palmas_ldo_val(struct udevice *dev, int op, int *uV) +{ + unsigned int hex, adr; + int ret; + + struct dm_regulator_uclass_platdata *uc_pdata; + + if (op == PMIC_OP_GET) + *uV = 0; + + uc_pdata = dev_get_uclass_platdata(dev); + + adr = uc_pdata->volt_reg; + + ret = pmic_reg_read(dev->parent, adr); + if (ret < 0) + return ret; + + if (op == PMIC_OP_GET) { + ret &= PALMAS_LDO_VOLT_MASK; + ret = palmas_ldo_hex2volt(ret); + if (ret < 0) + return ret; + *uV = ret; + return 0; + } + + hex = palmas_ldo_volt2hex(*uV); + if (hex < 0) + return hex; + + ret &= ~PALMAS_LDO_VOLT_MASK; + ret |= hex; + if (*uV > 1650000) + ret |= 0x80; + + return pmic_reg_write(dev->parent, adr, ret); +} + +static int palmas_ldo_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_platdata *uc_pdata; + struct udevice *parent; + + uc_pdata = dev_get_uclass_platdata(dev); + + parent = dev_get_parent(dev); + int type = dev_get_driver_data(parent); + + uc_pdata->type = REGULATOR_TYPE_LDO; + + if (dev->driver_data) { + u8 idx = dev->driver_data - 1; + uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][idx]; + uc_pdata->volt_reg = palmas_ldo_volt[type][idx]; + } else { + /* check for ldoln and ldousb cases */ + if (!strcmp("ldoln", dev->name)) { + uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][9]; + uc_pdata->volt_reg = palmas_ldo_volt[type][9]; + } else if (!strcmp("ldousb", dev->name)) { + uc_pdata->ctrl_reg = palmas_ldo_ctrl[type][10]; + uc_pdata->volt_reg = palmas_ldo_volt[type][10]; + } + } + + return 0; +} + +static int ldo_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = palmas_ldo_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int ldo_set_value(struct udevice *dev, int uV) +{ + return palmas_ldo_val(dev, PMIC_OP_SET, &uV); +} + +static bool ldo_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = palmas_ldo_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + + return enable; +} + +static int ldo_set_enable(struct udevice *dev, bool enable) +{ + return palmas_ldo_enable(dev, PMIC_OP_SET, &enable); +} + +static int palmas_smps_probe(struct udevice *dev) +{ + struct dm_regulator_uclass_platdata *uc_pdata; + struct udevice *parent; + int idx; + + uc_pdata = dev_get_uclass_platdata(dev); + + parent = dev_get_parent(dev); + int type = dev_get_driver_data(parent); + + uc_pdata->type = REGULATOR_TYPE_BUCK; + + switch (type) { + case PALMAS: + case TPS659038: + switch (dev->driver_data) { + case 123: + case 12: + uc_pdata->ctrl_reg = palmas_smps_ctrl[type][0]; + uc_pdata->volt_reg = palmas_smps_volt[type][0]; + break; + case 3: + uc_pdata->ctrl_reg = palmas_smps_ctrl[type][1]; + uc_pdata->volt_reg = palmas_smps_volt[type][1]; + break; + case 45: + uc_pdata->ctrl_reg = palmas_smps_ctrl[type][2]; + uc_pdata->volt_reg = palmas_smps_volt[type][2]; + break; + case 6: + case 7: + case 8: + case 9: + case 10: + idx = dev->driver_data - 4; + uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx]; + uc_pdata->volt_reg = palmas_smps_volt[type][idx]; + break; + + default: + printf("Wrong ID for regulator\n"); + } + break; + + case TPS65917: + switch (dev->driver_data) { + case 1: + case 2: + case 3: + case 4: + case 5: + idx = dev->driver_data - 1; + uc_pdata->ctrl_reg = palmas_smps_ctrl[type][idx]; + uc_pdata->volt_reg = palmas_smps_volt[type][idx]; + break; + + default: + printf("Wrong ID for regulator\n"); + } + break; + + default: + printf("Invalid PMIC ID\n"); + } + + return 0; +} + +static int smps_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = palmas_smps_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int smps_set_value(struct udevice *dev, int uV) +{ + return palmas_smps_val(dev, PMIC_OP_SET, &uV); +} + +static bool smps_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = palmas_smps_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + + return enable; +} + +static int smps_set_enable(struct udevice *dev, bool enable) +{ + return palmas_smps_enable(dev, PMIC_OP_SET, &enable); +} + +static const struct dm_regulator_ops palmas_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(palmas_ldo) = { + .name = PALMAS_LDO_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &palmas_ldo_ops, + .probe = palmas_ldo_probe, +}; + +static const struct dm_regulator_ops palmas_smps_ops = { + .get_value = smps_get_value, + .set_value = smps_set_value, + .get_enable = smps_get_enable, + .set_enable = smps_set_enable, +}; + +U_BOOT_DRIVER(palmas_smps) = { + .name = PALMAS_SMPS_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &palmas_smps_ops, + .probe = palmas_smps_probe, +}; |