exynos5422 has the s2mps11 PMIC. s2mps11 pmic has the 10-BUCK and 38-LDO regulators. Each IP and devices in exynos5422 can be controlled by each regulators. This patch is support for s2mps11 regulator driver.
Signed-off-by: Jaehoon Chung jh80.chung@samsung.com --- drivers/power/regulator/Kconfig | 8 + drivers/power/regulator/Makefile | 1 + drivers/power/regulator/s2mps11_regulator.c | 597 ++++++++++++++++++++++++++++ include/power/s2mps11.h | 55 +++ 4 files changed, 661 insertions(+) create mode 100644 drivers/power/regulator/s2mps11_regulator.c
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig index 26fb9368ea..5b4ac10462 100644 --- a/drivers/power/regulator/Kconfig +++ b/drivers/power/regulator/Kconfig @@ -101,6 +101,14 @@ config REGULATOR_RK8XX by the PMIC device. This driver is controlled by a device tree node which includes voltage limits.
+config DM_REGULATOR_S2MPS11 + bool "Enable driver for S2MPS11 regulator" + depends on DM_REGULATOR && PMIC_S2MPS11 + ---help--- + This enables implementation of driver-model regulator uclass + features for REGULATOR S2MPS11. + The driver implements get/set api for: value and enable. + config REGULATOR_S5M8767 bool "Enable support for S5M8767 regulator" depends on DM_REGULATOR && PMIC_S5M8767 diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile index 7a2e76dc82..728e8144de 100644 --- a/drivers/power/regulator/Makefile +++ b/drivers/power/regulator/Makefile @@ -14,6 +14,7 @@ obj-$(CONFIG_REGULATOR_PWM) += pwm_regulator.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_FIXED) += fixed.o obj-$(CONFIG_$(SPL_)DM_REGULATOR_GPIO) += gpio-regulator.o obj-$(CONFIG_REGULATOR_RK8XX) += rk8xx.o +obj-$(CONFIG_DM_REGULATOR_S2MPS11) += s2mps11_regulator.o obj-$(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/s2mps11_regulator.c b/drivers/power/regulator/s2mps11_regulator.c new file mode 100644 index 0000000000..3af20e60dd --- /dev/null +++ b/drivers/power/regulator/s2mps11_regulator.c @@ -0,0 +1,597 @@ +/* + * Copyright (C) 2018 Samsung Electronics + * Jaehoon Chung jh80.chung@samsung.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/s2mps11.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define MODE(_id, _val, _name) { \ + .id = _id, \ + .register_value = _val, \ + .name = _name, \ +} + +/* BUCK : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 */ +static struct dm_regulator_mode s2mps11_buck_modes[] = { + MODE(OP_OFF, S2MPS11_BUCK_MODE_OFF, "OFF"), + MODE(OP_STANDBY, S2MPS11_BUCK_MODE_STANDBY, "ON/OFF"), + MODE(OP_ON, S2MPS11_BUCK_MODE_STANDBY, "ON"), +}; + +static struct dm_regulator_mode s2mps11_ldo_modes[] = { + MODE(OP_OFF, S2MPS11_LDO_MODE_OFF, "OFF"), + MODE(OP_STANDBY, S2MPS11_LDO_MODE_STANDBY, "ON/OFF"), + MODE(OP_STANDBY_LPM, S2MPS11_LDO_MODE_STANDBY_LPM, "ON/LPM"), + MODE(OP_ON, S2MPS11_LDO_MODE_ON, "ON"), +}; + +static const char s2mps11_buck_ctrl[] = { + 0xff, 0x25, 0x27, 0x29, 0x2b, 0x2d, 0x33, 0x35, 0x37, 0x39, 0x3b +}; + +static const char s2mps11_buck_out[] = { + 0xff, 0x26, 0x28, 0x2a, 0x2c, 0x2f, 0x34, 0x36, 0x38, 0x3a, 0x3c +}; + +static int s2mps11_buck_hex2volt(int buck, int hex) +{ + unsigned int uV = 0; + + if (hex < 0) + goto bad; + + switch (buck) { + case 7: + case 8: + case 10: + if (hex > S2MPS11_BUCK7_8_10_VOLT_MAX_HEX) + goto bad; + + uV = hex * S2MPS11_BUCK_HSTEP + S2MPS11_BUCK_UV_HMIN; + break; + case 9: + if (hex > S2MPS11_BUCK9_VOLT_MAX_HEX) + goto bad; + uV = hex * S2MPS11_BUCK9_STEP * 2 + S2MPS11_BUCK9_UV_MIN; + break; + default: + if (buck == 5 && hex > S2MPS11_BUCK5_VOLT_MAX_HEX) + goto bad; + else if (buck != 5 && hex > S2MPS11_BUCK_VOLT_MAX_HEX) + goto bad; + + uV = hex * S2MPS11_BUCK_LSTEP + S2MPS11_BUCK_UV_MIN; + break; + } + + return uV; +bad: + pr_err("Value: %#x is wrong for BUCK%d", hex, buck); + return -EINVAL; +} + +static int s2mps11_buck_volt2hex(int buck, int uV) +{ + int hex; + + switch (buck) { + case 7: + case 8: + case 10: + hex = (uV - S2MPS11_BUCK_UV_HMIN) / S2MPS11_BUCK_HSTEP; + if (hex > S2MPS11_BUCK7_8_10_VOLT_MAX_HEX) + goto bad; + + break; + case 9: + hex = (uV - S2MPS11_BUCK9_UV_MIN) / S2MPS11_BUCK9_STEP; + if (hex > S2MPS11_BUCK9_VOLT_MAX_HEX) + goto bad; + break; + default: + hex = (uV - S2MPS11_BUCK_UV_MIN) / S2MPS11_BUCK_LSTEP; + if (buck == 5 && hex > S2MPS11_BUCK5_VOLT_MAX_HEX) + goto bad; + else if (buck != 5 && hex > S2MPS11_BUCK_VOLT_MAX_HEX) + goto bad; + break; + }; + + if (hex >= 0) + return hex; + +bad: + pr_err("Value: %d uV is wrong for BUCK%d", uV, buck); + return -EINVAL; +} + +static int s2mps11_buck_val(struct udevice *dev, int op, int *uV) +{ + int hex, buck, ret; + u32 mask, addr; + u8 val; + + buck = dev->driver_data; + if (buck < 1 || buck > S2MPS11_BUCK_NUM) { + pr_err("Wrong buck number: %d\n", buck); + return -EINVAL; + } + + if (op == PMIC_OP_GET) + *uV = 0; + + addr = s2mps11_buck_out[buck]; + + switch (buck) { + case 9: + mask = S2MPS11_BUCK9_VOLT_MASK; + break; + default: + mask = S2MPS11_BUCK_VOLT_MASK; + break; + } + + ret = pmic_read(dev->parent, addr, &val, 1); + if (ret) + return ret; + + if (op == PMIC_OP_GET) { + val &= mask; + ret = s2mps11_buck_hex2volt(buck, val); + if (ret < 0) + return ret; + *uV = ret; + return 0; + } + + hex = s2mps11_buck_volt2hex(buck, *uV); + if (hex < 0) + return hex; + + val &= ~mask; + val |= hex; + ret = pmic_write(dev->parent, addr, &val, 1); + + return ret; +} + +static int s2mps11_buck_mode(struct udevice *dev, int op, int *opmode) +{ + unsigned int addr, mode; + unsigned char val; + int buck, ret; + + buck = dev->driver_data; + if (buck < 1 || buck > S2MPS11_BUCK_NUM) { + pr_err("Wrong buck number: %d\n", buck); + return -EINVAL; + } + + addr = s2mps11_buck_ctrl[buck]; + + ret = pmic_read(dev->parent, addr, &val, 1); + if (ret) + return ret; + + if (op == PMIC_OP_GET) { + val &= (S2MPS11_BUCK_MODE_MASK << S2MPS11_BUCK_MODE_SHIFT); + switch (val) { + case S2MPS11_BUCK_MODE_OFF: + *opmode = OP_OFF; + break; + case S2MPS11_BUCK_MODE_STANDBY: + *opmode = OP_STANDBY; + break; + case S2MPS11_BUCK_MODE_ON: + *opmode = OP_ON; + break; + default: + return -EINVAL; + } + return 0; + } + + switch (*opmode) { + case OP_OFF: + mode = S2MPS11_BUCK_MODE_OFF; + break; + case OP_STANDBY: + mode = S2MPS11_BUCK_MODE_STANDBY; + break; + case OP_ON: + mode = S2MPS11_BUCK_MODE_ON; + break; + default: + pr_err("Wrong mode: %d for buck: %d\n", *opmode, buck); + return -EINVAL; + } + + val &= ~(S2MPS11_BUCK_MODE_MASK << S2MPS11_BUCK_MODE_SHIFT); + val |= mode; + ret = pmic_write(dev->parent, addr, &val, 1); + + return ret; +} + +static int s2mps11_buck_enable(struct udevice *dev, int op, bool *enable) +{ + int ret, on_off; + + if (op == PMIC_OP_GET) { + ret = s2mps11_buck_mode(dev, op, &on_off); + if (ret) + return ret; + switch (on_off) { + case OP_OFF: + *enable = false; + break; + case OP_ON: + *enable = true; + break; + default: + return -EINVAL; + } + } else if (op == PMIC_OP_SET) { + if (*enable) + on_off = OP_ON; + else + on_off = OP_OFF; + + ret = s2mps11_buck_mode(dev, op, &on_off); + if (ret) + return ret; + } + + return 0; +} + +static int buck_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = s2mps11_buck_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + return uV; +} + +static int buck_set_value(struct udevice *dev, int uV) +{ + return s2mps11_buck_val(dev, PMIC_OP_SET, &uV); +} + +static int buck_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = s2mps11_buck_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + return enable; +} + +static int buck_set_enable(struct udevice *dev, bool enable) +{ + return s2mps11_buck_enable(dev, PMIC_OP_SET, &enable); +} + +static int buck_get_mode(struct udevice *dev) +{ + int mode; + int ret; + + ret = s2mps11_buck_mode(dev, PMIC_OP_GET, &mode); + if (ret) + return ret; + + return mode; +} + +static int buck_set_mode(struct udevice *dev, int mode) +{ + return s2mps11_buck_mode(dev, PMIC_OP_SET, &mode); +} + +static int s2mps11_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 = s2mps11_buck_modes; + uc_pdata->mode_count = ARRAY_SIZE(s2mps11_buck_modes); + + return 0; +} + +static const struct dm_regulator_ops s2mps11_buck_ops = { + .get_value = buck_get_value, + .set_value = buck_set_value, + .get_enable = buck_get_enable, + .set_enable = buck_set_enable, + .get_mode = buck_get_mode, + .set_mode = buck_set_mode, +}; + +U_BOOT_DRIVER(s2mps11_buck) = { + .name = S2MPS11_BUCK_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &s2mps11_buck_ops, + .probe = s2mps11_buck_probe, +}; + +static int s2mps11_ldo_hex2volt(int ldo, int hex) +{ + unsigned int uV = 0; + + if (hex > S2MPS11_LDO_VOLT_MAX_HEX) { + pr_err("Value: %#x is wrong for LDO%d", hex, ldo); + return -EINVAL; + } + + switch (ldo) { + case 1: + case 6: + case 11: + case 22: + case 23: + uV = hex * S2MPS11_LDO_STEP + S2MPS11_LDO_UV_MIN; + break; + default: + uV = hex * S2MPS11_LDO_STEP * 2 + S2MPS11_LDO_UV_MIN; + break; + } + + return uV; +} + +static int s2mps11_ldo_volt2hex(int ldo, int uV) +{ + int hex = 0; + + switch (ldo) { + case 1: + case 6: + case 11: + case 22: + case 23: + hex = (uV - S2MPS11_LDO_UV_MIN) / S2MPS11_LDO_STEP; + break; + default: + hex = (uV - S2MPS11_LDO_UV_MIN) / (S2MPS11_LDO_STEP * 2); + break; + } + + if (hex >= 0 && hex <= S2MPS11_LDO_VOLT_MAX_HEX) + return hex; + + pr_err("Value: %d uV is wrong for LDO%d", uV, ldo); + return -EINVAL; + + return 0; +} + +static int s2mps11_ldo_val(struct udevice *dev, int op, int *uV) +{ + unsigned int addr; + unsigned char val; + int hex, ldo, ret; + + ldo = dev->driver_data; + if (ldo < 1 || ldo > S2MPS11_LDO_NUM) { + pr_err("Wrong ldo number: %d\n", ldo); + return -EINVAL; + } + + addr = S2MPS11_REG_L1CTRL + ldo - 1; + + ret = pmic_read(dev->parent, addr, &val, 1); + if (ret) + return ret; + + if (op == PMIC_OP_GET) { + *uV = 0; + val &= S2MPS11_LDO_VOLT_MASK; + ret = s2mps11_ldo_hex2volt(ldo, val); + if (ret < 0) + return ret; + + *uV = ret; + return 0; + } + + hex = s2mps11_ldo_volt2hex(ldo, *uV); + if (hex < 0) + return hex; + + val &= ~S2MPS11_LDO_VOLT_MASK; + val |= hex; + ret = pmic_write(dev->parent, addr, &val, 1); + + return ret; +} + +static int s2mps11_ldo_mode(struct udevice *dev, int op, int *opmode) +{ + unsigned int addr, mode; + unsigned char val; + int ldo, ret; + + ldo = dev->driver_data; + if (ldo < 1 || ldo > S2MPS11_LDO_NUM) { + pr_err("Wrong ldo number: %d\n", ldo); + return -EINVAL; + } + addr = S2MPS11_REG_L1CTRL + ldo - 1; + + ret = pmic_read(dev->parent, addr, &val, 1); + if (ret) + return ret; + + if (op == PMIC_OP_GET) { + val &= (S2MPS11_LDO_MODE_MASK << S2MPS11_LDO_MODE_SHIFT); + switch (val) { + case S2MPS11_LDO_MODE_OFF: + *opmode = OP_OFF; + break; + case S2MPS11_LDO_MODE_STANDBY: + *opmode = OP_STANDBY; + break; + case S2MPS11_LDO_MODE_STANDBY_LPM: + *opmode = OP_STANDBY_LPM; + break; + case S2MPS11_LDO_MODE_ON: + *opmode = OP_ON; + break; + default: + return -EINVAL; + } + return 0; + } + + switch (*opmode) { + case OP_OFF: + mode = S2MPS11_LDO_MODE_OFF; + break; + case OP_STANDBY: + mode = S2MPS11_LDO_MODE_STANDBY; + break; + case OP_STANDBY_LPM: + mode = S2MPS11_LDO_MODE_STANDBY_LPM; + break; + case OP_ON: + mode = S2MPS11_LDO_MODE_ON; + break; + default: + pr_err("Wrong mode: %d for ldo: %d\n", *opmode, ldo); + return -EINVAL; + } + + val &= ~(S2MPS11_LDO_MODE_MASK << S2MPS11_LDO_MODE_SHIFT); + val |= mode; + ret = pmic_write(dev->parent, addr, &val, 1); + + return ret; +} + +static int s2mps11_ldo_enable(struct udevice *dev, int op, bool *enable) +{ + int ret, on_off; + + if (op == PMIC_OP_GET) { + ret = s2mps11_ldo_mode(dev, op, &on_off); + if (ret) + return ret; + switch (on_off) { + case OP_OFF: + *enable = false; + break; + case OP_ON: + *enable = true; + break; + default: + return -EINVAL; + } + } else if (op == PMIC_OP_SET) { + if (*enable) + on_off = OP_ON; + else + on_off = OP_OFF; + + ret = s2mps11_ldo_mode(dev, op, &on_off); + if (ret) + return ret; + } + + return 0; +} + +static int ldo_get_value(struct udevice *dev) +{ + int uV; + int ret; + + ret = s2mps11_ldo_val(dev, PMIC_OP_GET, &uV); + if (ret) + return ret; + + return uV; +} + +static int ldo_set_value(struct udevice *dev, int uV) +{ + return s2mps11_ldo_val(dev, PMIC_OP_SET, &uV); +} + +static int ldo_get_enable(struct udevice *dev) +{ + bool enable = false; + int ret; + + ret = s2mps11_ldo_enable(dev, PMIC_OP_GET, &enable); + if (ret) + return ret; + return enable; +} + +static int ldo_set_enable(struct udevice *dev, bool enable) +{ + return s2mps11_ldo_enable(dev, PMIC_OP_SET, &enable); +} + +static int ldo_get_mode(struct udevice *dev) +{ + int mode, ret; + + ret = s2mps11_ldo_mode(dev, PMIC_OP_GET, &mode); + if (ret) + return ret; + return mode; +} + +static int ldo_set_mode(struct udevice *dev, int mode) +{ + return s2mps11_ldo_mode(dev, PMIC_OP_SET, &mode); +} + +static int s2mps11_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 = s2mps11_ldo_modes; + uc_pdata->mode_count = ARRAY_SIZE(s2mps11_ldo_modes); + + return 0; +} + +static const struct dm_regulator_ops s2mps11_ldo_ops = { + .get_value = ldo_get_value, + .set_value = ldo_set_value, + .get_enable = ldo_get_enable, + .set_enable = ldo_set_enable, + .get_mode = ldo_get_mode, + .set_mode = ldo_set_mode, +}; + +U_BOOT_DRIVER(s2mps11_ldo) = { + .name = S2MPS11_LDO_DRIVER, + .id = UCLASS_REGULATOR, + .ops = &s2mps11_ldo_ops, + .probe = s2mps11_ldo_probe, +}; diff --git a/include/power/s2mps11.h b/include/power/s2mps11.h index 5da47198a4..22b38fff70 100644 --- a/include/power/s2mps11.h +++ b/include/power/s2mps11.h @@ -106,4 +106,59 @@ enum s2mps11_reg {
#define S2MPS11_LDO26_ENABLE 0xec
+#define S2MPS11_LDO_NUM 26 +#define S2MPS11_BUCK_NUM 10 + +/* Driver name */ +#define S2MPS11_BUCK_DRIVER "s2mps11_buck" +#define S2MPS11_OF_BUCK_PREFIX "BUCK" +#define S2MPS11_LDO_DRIVER "s2mps11_ldo" +#define S2MPS11_OF_LDO_PREFIX "LDO" + +/* BUCK */ +#define S2MPS11_BUCK_VOLT_MASK 0xff +#define S2MPS11_BUCK9_VOLT_MASK 0x1f + +#define S2MPS11_BUCK_LSTEP 6250 +#define S2MPS11_BUCK_HSTEP 12500 +#define S2MPS11_BUCK9_STEP 25000 + +#define S2MPS11_BUCK_UV_MIN 600000 +#define S2MPS11_BUCK_UV_HMIN 750000 +#define S2MPS11_BUCK9_UV_MIN 1400000 + +#define S2MPS11_BUCK_VOLT_MAX_HEX 0xA0 +#define S2MPS11_BUCK5_VOLT_MAX_HEX 0xDF +#define S2MPS11_BUCK7_8_10_VOLT_MAX_HEX 0xDC +#define S2MPS11_BUCK9_VOLT_MAX_HEX 0x5F + +#define S2MPS11_BUCK_MODE_SHIFT 6 +#define S2MPS11_BUCK_MODE_MASK (0x3) +#define S2MPS11_BUCK_MODE_OFF (0x0 << 6) +#define S2MPS11_BUCK_MODE_STANDBY (0x1 << 6) +#define S2MPS11_BUCK_MODE_ON (0x3 << 6) + +/* LDO */ +#define S2MPS11_LDO_VOLT_MASK 0x3F +#define S2MPS11_LDO_VOLT_MAX_HEX 0x3F + +#define S2MPS11_LDO_STEP 25000 +#define S2MPS11_LDO_UV_MIN 800000 + +#define S2MPS11_LDO_MODE_MASK 0x3 +#define S2MPS11_LDO_MODE_SHIFT 6 + +#define S2MPS11_LDO_MODE_OFF (0x0 << 6) +#define S2MPS11_LDO_MODE_STANDBY (0x1 << 6) +#define S2MPS11_LDO_MODE_STANDBY_LPM (0x2 << 6) +#define S2MPS11_LDO_MODE_ON (0x3 << 6) + +enum { + OP_OFF = 0, + OP_LPM, + OP_STANDBY, + OP_STANDBY_LPM, + OP_ON, +}; + #endif