summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
Diffstat (limited to 'drivers')
-rw-r--r--drivers/power/regulator/Kconfig9
-rw-r--r--drivers/power/regulator/Makefile1
-rw-r--r--drivers/power/regulator/s5m8767.c269
3 files changed, 279 insertions, 0 deletions
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig
index d0906501d0..e85c69231e 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 43f4d2ce43..08d7b0d26d 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 0000000000..93a3c942d1
--- /dev/null
+++ b/drivers/power/regulator/s5m8767.c
@@ -0,0 +1,269 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ *
+ * 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/s5m8767.h>
+
+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,
+};
generated by cgit (git 2.34.1) at 2024-12-27 02:47:18 +0000