[U-Boot] [PATCH 1/3] power: regulator: s2mps11: add a regulator driver for s2mps11
Jaehoon Chung
jh80.chung at samsung.com
Tue Jan 16 06:33:50 UTC 2018
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 at 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 at 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
--
2.15.1
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