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-rw-r--r--drivers/power/Kconfig8
-rw-r--r--drivers/power/Makefile1
-rw-r--r--drivers/power/as3722.c16
-rw-r--r--drivers/power/pmic/Kconfig43
-rw-r--r--drivers/power/pmic/Makefile3
-rw-r--r--drivers/power/pmic/i2c_pmic_emul.c142
-rw-r--r--drivers/power/pmic/max77686.c92
-rw-r--r--drivers/power/pmic/pmic-uclass.c145
-rw-r--r--drivers/power/pmic/pmic_max77686.c2
-rw-r--r--drivers/power/pmic/sandbox.c79
-rw-r--r--drivers/power/regulator/Kconfig63
-rw-r--r--drivers/power/regulator/Makefile11
-rw-r--r--drivers/power/regulator/fixed.c126
-rw-r--r--drivers/power/regulator/max77686.c825
-rw-r--r--drivers/power/regulator/regulator-uclass.c332
-rw-r--r--drivers/power/regulator/sandbox.c355
16 files changed, 2238 insertions, 5 deletions
diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig
index f8f0239484f..23cdd714ae6 100644
--- a/drivers/power/Kconfig
+++ b/drivers/power/Kconfig
@@ -1,3 +1,9 @@
+menu "Power"
+
+source "drivers/power/pmic/Kconfig"
+
+source "drivers/power/regulator/Kconfig"
+
config AXP221_POWER
boolean "axp221 / axp223 pmic support"
depends on MACH_SUN6I || MACH_SUN8I
@@ -73,3 +79,5 @@ config AXP221_ELDO3_VOLT
disable eldo3. On some A31(s) tablets it might be used to supply
1.2V for the SSD2828 chip (converter of parallel LCD interface
into MIPI DSI).
+
+endmenu
diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 214565241ed..a2d3c047db8 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -15,7 +15,6 @@ obj-$(CONFIG_TPS6586X_POWER) += tps6586x.o
obj-$(CONFIG_TWL4030_POWER) += twl4030.o
obj-$(CONFIG_TWL6030_POWER) += twl6030.o
obj-$(CONFIG_PALMAS_POWER) += palmas.o
-
obj-$(CONFIG_POWER) += power_core.o
obj-$(CONFIG_DIALOG_POWER) += power_dialog.o
obj-$(CONFIG_POWER_FSL) += power_fsl.o
diff --git a/drivers/power/as3722.c b/drivers/power/as3722.c
index a60bb5f83fb..c09e1de06f4 100644
--- a/drivers/power/as3722.c
+++ b/drivers/power/as3722.c
@@ -27,7 +27,7 @@
#define AS3722_DEVICE_ID 0x0c
#define AS3722_ASIC_ID2 0x91
-static int as3722_read(struct udevice *pmic, u8 reg, u8 *value)
+int as3722_read(struct udevice *pmic, u8 reg, u8 *value)
{
int err;
@@ -38,7 +38,7 @@ static int as3722_read(struct udevice *pmic, u8 reg, u8 *value)
return 0;
}
-static int as3722_write(struct udevice *pmic, u8 reg, u8 value)
+int as3722_write(struct udevice *pmic, u8 reg, u8 value)
{
int err;
@@ -234,6 +234,15 @@ int as3722_gpio_direction_output(struct udevice *pmic, unsigned int gpio,
return 0;
}
+/* Temporary function until we get the pmic framework */
+int as3722_get(struct udevice **devp)
+{
+ int bus = 0;
+ int address = 0x40;
+
+ return i2c_get_chip_for_busnum(bus, address, 1, devp);
+}
+
int as3722_init(struct udevice **devp)
{
struct udevice *pmic;
@@ -258,7 +267,8 @@ int as3722_init(struct udevice **devp)
debug("AS3722 revision %#x found on I2C bus %u, address %#x\n",
revision, bus, address);
- *devp = pmic;
+ if (devp)
+ *devp = pmic;
return 0;
}
diff --git a/drivers/power/pmic/Kconfig b/drivers/power/pmic/Kconfig
new file mode 100644
index 00000000000..164f42143fa
--- /dev/null
+++ b/drivers/power/pmic/Kconfig
@@ -0,0 +1,43 @@
+config DM_PMIC
+ bool "Enable Driver Model for PMIC drivers (UCLASS_PMIC)"
+ depends on DM
+ ---help---
+ This config enables the driver-model PMIC support.
+ UCLASS_PMIC - designed to provide an I/O interface for PMIC devices.
+ For the multi-function PMIC devices, this can be used as parent I/O
+ device for each IC's interface. Then, each children uses its parent
+ for read/write. For detailed description, please refer to the files:
+ - 'drivers/power/pmic/pmic-uclass.c'
+ - 'include/power/pmic.h'
+
+config DM_PMIC_MAX77686
+ bool "Enable Driver Model for PMIC MAX77686"
+ depends on DM_PMIC
+ ---help---
+ This config enables implementation of driver-model pmic uclass features
+ for PMIC MAX77686. The driver implements read/write operations.
+
+config DM_PMIC_SANDBOX
+ bool "Enable Driver Model for emulated Sandbox PMIC "
+ depends on DM_PMIC
+ ---help---
+ Enable the driver for Sandbox PMIC emulation. The emulated PMIC device
+ depends on two drivers:
+ - sandbox PMIC I/O driver - implements dm pmic operations
+ - sandbox PMIC i2c emul driver - emulates the PMIC's I2C transmission
+
+ A detailed information can be found in header: '<power/sandbox_pmic.h>'
+
+ The Sandbox PMIC info:
+ * I/O interface:
+ - I2C chip address: 0x40
+ - first register address: 0x0
+ - register count: 0x10
+ * Adjustable outputs:
+ - 2x LDO
+ - 2x BUCK
+ - Each, with a different operating conditions (header).
+ * Reset values:
+ - set by i2c emul driver's probe() (defaults in header)
+
+ Driver binding info: doc/device-tree-bindings/pmic/sandbox.txt
diff --git a/drivers/power/pmic/Makefile b/drivers/power/pmic/Makefile
index 985cfdb9018..ae86f041f34 100644
--- a/drivers/power/pmic/Makefile
+++ b/drivers/power/pmic/Makefile
@@ -5,6 +5,9 @@
# SPDX-License-Identifier: GPL-2.0+
#
+obj-$(CONFIG_DM_PMIC) += pmic-uclass.o
+obj-$(CONFIG_DM_PMIC_MAX77686) += max77686.o
+obj-$(CONFIG_DM_PMIC_SANDBOX) += sandbox.o i2c_pmic_emul.o
obj-$(CONFIG_POWER_LTC3676) += pmic_ltc3676.o
obj-$(CONFIG_POWER_MAX8998) += pmic_max8998.o
obj-$(CONFIG_POWER_MAX8997) += pmic_max8997.o
diff --git a/drivers/power/pmic/i2c_pmic_emul.c b/drivers/power/pmic/i2c_pmic_emul.c
new file mode 100644
index 00000000000..aeab5c949ad
--- /dev/null
+++ b/drivers/power/pmic/i2c_pmic_emul.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@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/sandbox_pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/**
+ * struct sandbox_i2c_pmic_plat_data - platform data for the PMIC
+ *
+ * @rw_reg: PMICs register of the chip I/O transaction
+ * @reg: PMICs registers array
+ */
+struct sandbox_i2c_pmic_plat_data {
+ u8 rw_reg;
+ u8 reg[SANDBOX_PMIC_REG_COUNT];
+};
+
+static int sandbox_i2c_pmic_read_data(struct udevice *emul, uchar chip,
+ uchar *buffer, int len)
+{
+ struct sandbox_i2c_pmic_plat_data *plat = dev_get_platdata(emul);
+
+ if (plat->rw_reg + len > SANDBOX_PMIC_REG_COUNT) {
+ error("Request exceeds PMIC register range! Max register: %#x",
+ SANDBOX_PMIC_REG_COUNT);
+ return -EFAULT;
+ }
+
+ debug("Read PMIC: %#x at register: %#x count: %d\n",
+ (unsigned)chip & 0xff, plat->rw_reg, len);
+
+ memcpy(buffer, &plat->reg[plat->rw_reg], len);
+
+ return 0;
+}
+
+static int sandbox_i2c_pmic_write_data(struct udevice *emul, uchar chip,
+ uchar *buffer, int len,
+ bool next_is_read)
+{
+ struct sandbox_i2c_pmic_plat_data *plat = dev_get_platdata(emul);
+
+ /* Probe only */
+ if (!len)
+ return 0;
+
+ /* Set PMIC register for I/O */
+ plat->rw_reg = *buffer;
+
+ debug("Write PMIC: %#x at register: %#x count: %d\n",
+ (unsigned)chip & 0xff, plat->rw_reg, len);
+
+ /* For read operation, set (write) only chip reg */
+ if (next_is_read)
+ return 0;
+
+ buffer++;
+ len--;
+
+ if (plat->rw_reg + len > SANDBOX_PMIC_REG_COUNT) {
+ error("Request exceeds PMIC register range! Max register: %#x",
+ SANDBOX_PMIC_REG_COUNT);
+ }
+
+ memcpy(&plat->reg[plat->rw_reg], buffer, len);
+
+ return 0;
+}
+
+static int sandbox_i2c_pmic_xfer(struct udevice *emul, struct i2c_msg *msg,
+ int nmsgs)
+{
+ int ret = 0;
+
+ for (; nmsgs > 0; nmsgs--, msg++) {
+ bool next_is_read = nmsgs > 1 && (msg[1].flags & I2C_M_RD);
+ if (msg->flags & I2C_M_RD) {
+ ret = sandbox_i2c_pmic_read_data(emul, msg->addr,
+ msg->buf, msg->len);
+ } else {
+ ret = sandbox_i2c_pmic_write_data(emul, msg->addr,
+ msg->buf, msg->len,
+ next_is_read);
+ }
+
+ if (ret)
+ break;
+ }
+
+ return ret;
+}
+
+static int sandbox_i2c_pmic_ofdata_to_platdata(struct udevice *emul)
+{
+ struct sandbox_i2c_pmic_plat_data *plat = dev_get_platdata(emul);
+ const u8 *reg_defaults;
+
+ debug("%s:%d Setting PMIC default registers\n", __func__, __LINE__);
+
+ reg_defaults = fdtdec_locate_byte_array(gd->fdt_blob, emul->of_offset,
+ "reg-defaults",
+ SANDBOX_PMIC_REG_COUNT);
+
+ if (!reg_defaults) {
+ error("Property \"reg-defaults\" not found for device: %s!",
+ emul->name);
+ return -EINVAL;
+ }
+
+ memcpy(&plat->reg, reg_defaults, SANDBOX_PMIC_REG_COUNT);
+
+ return 0;
+}
+
+struct dm_i2c_ops sandbox_i2c_pmic_emul_ops = {
+ .xfer = sandbox_i2c_pmic_xfer,
+};
+
+static const struct udevice_id sandbox_i2c_pmic_ids[] = {
+ { .compatible = "sandbox,i2c-pmic" },
+ { }
+};
+
+U_BOOT_DRIVER(sandbox_i2c_pmic_emul) = {
+ .name = "sandbox_i2c_pmic_emul",
+ .id = UCLASS_I2C_EMUL,
+ .of_match = sandbox_i2c_pmic_ids,
+ .ofdata_to_platdata = sandbox_i2c_pmic_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct sandbox_i2c_pmic_plat_data),
+ .ops = &sandbox_i2c_pmic_emul_ops,
+};
diff --git a/drivers/power/pmic/max77686.c b/drivers/power/pmic/max77686.c
new file mode 100644
index 00000000000..3523b4a2de2
--- /dev/null
+++ b/drivers/power/pmic/max77686.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2014-2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@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/max77686_pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = "ldo", .driver = MAX77686_LDO_DRIVER },
+ { .prefix = "buck", .driver = MAX77686_BUCK_DRIVER },
+ { },
+};
+
+static int max77686_reg_count(struct udevice *dev)
+{
+ return MAX77686_NUM_OF_REGS;
+}
+
+static int max77686_write(struct udevice *dev, uint reg, const uint8_t *buff,
+ int len)
+{
+ if (dm_i2c_write(dev, reg, buff, len)) {
+ error("write error to device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int max77686_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
+{
+ if (dm_i2c_read(dev, reg, buff, len)) {
+ error("read error from device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int max77686_bind(struct udevice *dev)
+{
+ int regulators_node;
+ const void *blob = gd->fdt_blob;
+ int children;
+
+ regulators_node = fdt_subnode_offset(blob, dev->of_offset,
+ "voltage-regulators");
+ if (regulators_node <= 0) {
+ debug("%s: %s regulators subnode not found!", __func__,
+ dev->name);
+ return -ENXIO;
+ }
+
+ debug("%s: '%s' - found regulators subnode\n", __func__, dev->name);
+
+ children = pmic_bind_children(dev, regulators_node, pmic_children_info);
+ if (!children)
+ debug("%s: %s - no child found\n", __func__, dev->name);
+
+ /* Always return success for this device */
+ return 0;
+}
+
+static struct dm_pmic_ops max77686_ops = {
+ .reg_count = max77686_reg_count,
+ .read = max77686_read,
+ .write = max77686_write,
+};
+
+static const struct udevice_id max77686_ids[] = {
+ { .compatible = "maxim,max77686" },
+ { }
+};
+
+U_BOOT_DRIVER(pmic_max77686) = {
+ .name = "max77686 pmic",
+ .id = UCLASS_PMIC,
+ .of_match = max77686_ids,
+ .bind = max77686_bind,
+ .ops = &max77686_ops,
+};
diff --git a/drivers/power/pmic/pmic-uclass.c b/drivers/power/pmic/pmic-uclass.c
new file mode 100644
index 00000000000..812ac13baa3
--- /dev/null
+++ b/drivers/power/pmic/pmic-uclass.c
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 2014-2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <dm/lists.h>
+#include <dm/device-internal.h>
+#include <dm/uclass-internal.h>
+#include <power/pmic.h>
+#include <linux/ctype.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static ulong str_get_num(const char *ptr, const char *maxptr)
+{
+ if (!ptr || !maxptr)
+ return 0;
+
+ while (!isdigit(*ptr) && ptr++ < maxptr);
+
+ return simple_strtoul(ptr, NULL, 0);
+}
+
+int pmic_bind_children(struct udevice *pmic, int offset,
+ const struct pmic_child_info *child_info)
+{
+ const struct pmic_child_info *info;
+ const void *blob = gd->fdt_blob;
+ struct driver *drv;
+ struct udevice *child;
+ const char *node_name;
+ int node_name_len;
+ int bind_count = 0;
+ int node;
+ int prefix_len;
+ int ret;
+
+ debug("%s for '%s' at node offset: %d\n", __func__, pmic->name,
+ pmic->of_offset);
+
+ for (node = fdt_first_subnode(blob, offset);
+ node > 0;
+ node = fdt_next_subnode(blob, node)) {
+ node_name = fdt_get_name(blob, node, &node_name_len);
+
+ debug("* Found child node: '%s' at offset:%d\n", node_name,
+ node);
+
+ child = NULL;
+ for (info = child_info; info->prefix && info->driver; info++) {
+ prefix_len = strlen(info->prefix);
+ if (strncasecmp(info->prefix, node_name, prefix_len))
+ continue;
+
+ debug(" - compatible prefix: '%s'\n", info->prefix);
+
+ drv = lists_driver_lookup_name(info->driver);
+ if (!drv) {
+ debug(" - driver: '%s' not found!\n",
+ info->driver);
+ continue;
+ }
+
+ debug(" - found child driver: '%s'\n", drv->name);
+
+ ret = device_bind(pmic, drv, node_name, NULL,
+ node, &child);
+ if (ret) {
+ debug(" - child binding error: %d\n", ret);
+ continue;
+ }
+
+ debug(" - bound child device: '%s'\n", child->name);
+
+ child->driver_data = str_get_num(node_name +
+ prefix_len,
+ node_name +
+ node_name_len);
+
+ debug(" - set 'child->driver_data': %lu\n",
+ child->driver_data);
+ break;
+ }
+
+ if (child)
+ bind_count++;
+ else
+ debug(" - compatible prefix not found\n");
+ }
+
+ debug("Bound: %d childs for PMIC: '%s'\n", bind_count, pmic->name);
+ return bind_count;
+}
+
+int pmic_get(const char *name, struct udevice **devp)
+{
+ return uclass_get_device_by_name(UCLASS_PMIC, name, devp);
+}
+
+int pmic_reg_count(struct udevice *dev)
+{
+ const struct dm_pmic_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->reg_count)
+ return -ENOSYS;
+
+ return ops->reg_count(dev);
+}
+
+int pmic_read(struct udevice *dev, uint reg, uint8_t *buffer, int len)
+{
+ const struct dm_pmic_ops *ops = dev_get_driver_ops(dev);
+
+ if (!buffer)
+ return -EFAULT;
+
+ if (!ops || !ops->read)
+ return -ENOSYS;
+
+ return ops->read(dev, reg, buffer, len);
+}
+
+int pmic_write(struct udevice *dev, uint reg, const uint8_t *buffer, int len)
+{
+ const struct dm_pmic_ops *ops = dev_get_driver_ops(dev);
+
+ if (!buffer)
+ return -EFAULT;
+
+ if (!ops || !ops->write)
+ return -ENOSYS;
+
+ return ops->write(dev, reg, buffer, len);
+}
+
+UCLASS_DRIVER(pmic) = {
+ .id = UCLASS_PMIC,
+ .name = "pmic",
+};
diff --git a/drivers/power/pmic/pmic_max77686.c b/drivers/power/pmic/pmic_max77686.c
index 95b1a57ca2b..1ad810acc26 100644
--- a/drivers/power/pmic/pmic_max77686.c
+++ b/drivers/power/pmic/pmic_max77686.c
@@ -295,7 +295,7 @@ int pmic_init(unsigned char bus)
p->name = name;
p->interface = PMIC_I2C;
- p->number_of_regs = PMIC_NUM_OF_REGS;
+ p->number_of_regs = MAX77686_NUM_OF_REGS;
p->hw.i2c.tx_num = 1;
puts("Board PMIC init\n");
diff --git a/drivers/power/pmic/sandbox.c b/drivers/power/pmic/sandbox.c
new file mode 100644
index 00000000000..3e56acd5e27
--- /dev/null
+++ b/drivers/power/pmic/sandbox.c
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@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/sandbox_pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct pmic_child_info pmic_children_info[] = {
+ { .prefix = SANDBOX_OF_LDO_PREFIX, .driver = SANDBOX_LDO_DRIVER },
+ { .prefix = SANDBOX_OF_BUCK_PREFIX, .driver = SANDBOX_BUCK_DRIVER },
+ { },
+};
+
+static int sandbox_pmic_reg_count(struct udevice *dev)
+{
+ return SANDBOX_PMIC_REG_COUNT;
+}
+
+static int sandbox_pmic_write(struct udevice *dev, uint reg,
+ const uint8_t *buff, int len)
+{
+ if (dm_i2c_write(dev, reg, buff, len)) {
+ error("write error to device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int sandbox_pmic_read(struct udevice *dev, uint reg,
+ uint8_t *buff, int len)
+{
+ if (dm_i2c_read(dev, reg, buff, len)) {
+ error("read error from device: %p register: %#x!", dev, reg);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static int sandbox_pmic_bind(struct udevice *dev)
+{
+ if (!pmic_bind_children(dev, dev->of_offset, pmic_children_info))
+ error("%s:%d PMIC: %s - no child found!", __func__, __LINE__,
+ dev->name);
+
+ /* Always return success for this device - allows for PMIC I/O */
+ return 0;
+}
+
+static struct dm_pmic_ops sandbox_pmic_ops = {
+ .reg_count = sandbox_pmic_reg_count,
+ .read = sandbox_pmic_read,
+ .write = sandbox_pmic_write,
+};
+
+static const struct udevice_id sandbox_pmic_ids[] = {
+ { .compatible = "sandbox,pmic" },
+ { }
+};
+
+U_BOOT_DRIVER(sandbox_pmic) = {
+ .name = "sandbox_pmic",
+ .id = UCLASS_PMIC,
+ .of_match = sandbox_pmic_ids,
+ .bind = sandbox_pmic_bind,
+ .ops = &sandbox_pmic_ops,
+};
diff --git a/drivers/power/regulator/Kconfig b/drivers/power/regulator/Kconfig
new file mode 100644
index 00000000000..6289b83910c
--- /dev/null
+++ b/drivers/power/regulator/Kconfig
@@ -0,0 +1,63 @@
+config DM_REGULATOR
+ bool "Enable Driver Model for REGULATOR drivers (UCLASS_REGULATOR)"
+ depends on DM
+ ---help---
+ This config enables the driver model regulator support.
+ UCLASS_REGULATOR - designed to provide a common API for basic regulator's
+ functions, like get/set Voltage or Current value, enable state, etc...
+ Note:
+ When enabling this, please read the description, found in the files:
+ - 'include/power/pmic.h'
+ - 'include/power/regulator.h'
+ - 'drivers/power/pmic/pmic-uclass.c'
+ - 'drivers/power/pmic/regulator-uclass.c'
+ It's important to call the device_bind() with the proper node offset,
+ when binding the regulator devices. The pmic_bind_childs() can be used
+ for this purpose if PMIC I/O driver is implemented or dm_scan_fdt_node()
+ otherwise. Detailed information can be found in the header file.
+
+config DM_REGULATOR_MAX77686
+ bool "Enable Driver Model for REGULATOR MAX77686"
+ depends on DM_REGULATOR && DM_PMIC_MAX77686
+ ---help---
+ This config enables implementation of driver-model regulator uclass
+ features for REGULATOR MAX77686. The driver implements get/set api for:
+ value, enable and mode.
+
+config DM_REGULATOR_FIXED
+ bool "Enable Driver Model for REGULATOR Fixed value"
+ depends on DM_REGULATOR
+ ---help---
+ This config enables implementation of driver-model regulator uclass
+ features for fixed value regulators. The driver implements get/set api
+ for enable and get only for voltage value.
+
+config DM_REGULATOR_SANDBOX
+ bool "Enable Driver Model for Sandbox PMIC regulator"
+ depends on DM_REGULATOR && DM_PMIC_SANDBOX
+ ---help---
+ Enable the regulator driver for emulated Sandbox PMIC.
+ The emulated PMIC device depends on two drivers:
+ - sandbox PMIC I/O driver - implements dm pmic operations
+ - sandbox PMIC regulator driver - implements dm regulator operations
+ - sandbox PMIC i2c emul driver - emulates the PMIC's I2C transmission
+
+ The regulator driver provides uclass operations for sandbox PMIC's
+ regulators. The driver implements get/set api for: voltage, current,
+ operation mode and enable state.
+ The driver supports LDO and BUCK regulators.
+
+ The Sandbox PMIC info:
+ * I/O interface:
+ - I2C chip address: 0x40
+ - first register address: 0x0
+ - register count: 0x10
+ * Adjustable outputs:
+ - 2x LDO
+ - 2x BUCK
+ - Each, with a different operating conditions (header).
+ * Reset values:
+ - set by i2c emul driver's probe() (defaults in header)
+
+ A detailed information can be found in header: '<power/sandbox_pmic.h>'
+ Binding info: 'doc/device-tree-bindings/pmic/max77686.txt'
diff --git a/drivers/power/regulator/Makefile b/drivers/power/regulator/Makefile
new file mode 100644
index 00000000000..96aa6249611
--- /dev/null
+++ b/drivers/power/regulator/Makefile
@@ -0,0 +1,11 @@
+#
+# Copyright (C) 2015 Samsung Electronics
+# Przemyslaw Marczak <p.marczak@samsung.com>
+#
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-$(CONFIG_DM_REGULATOR) += regulator-uclass.o
+obj-$(CONFIG_DM_REGULATOR_MAX77686) += max77686.o
+obj-$(CONFIG_DM_REGULATOR_FIXED) += fixed.o
+obj-$(CONFIG_DM_REGULATOR_SANDBOX) += sandbox.o
diff --git a/drivers/power/regulator/fixed.c b/drivers/power/regulator/fixed.c
new file mode 100644
index 00000000000..d053817fc22
--- /dev/null
+++ b/drivers/power/regulator/fixed.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2015 Samsung Electronics
+ *
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <i2c.h>
+#include <asm/gpio.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct fixed_regulator_platdata {
+ struct gpio_desc gpio; /* GPIO for regulator enable control */
+};
+
+static int fixed_regulator_ofdata_to_platdata(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ struct fixed_regulator_platdata *dev_pdata;
+ struct gpio_desc *gpio;
+ int ret;
+
+ dev_pdata = dev_get_platdata(dev);
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata)
+ return -ENXIO;
+
+ /* Set type to fixed */
+ uc_pdata->type = REGULATOR_TYPE_FIXED;
+
+ /* Get fixed regulator gpio desc */
+ gpio = &dev_pdata->gpio;
+ ret = gpio_request_by_name(dev, "gpio", 0, gpio, GPIOD_IS_OUT);
+ if (ret)
+ debug("Fixed regulator gpio - not found! Error: %d", ret);
+
+ return 0;
+}
+
+static int fixed_regulator_get_value(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata)
+ return -ENXIO;
+
+ if (uc_pdata->min_uV != uc_pdata->max_uV) {
+ debug("Invalid constraints for: %s\n", uc_pdata->name);
+ return -EINVAL;
+ }
+
+ return uc_pdata->min_uV;
+}
+
+static int fixed_regulator_get_current(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata)
+ return -ENXIO;
+
+ if (uc_pdata->min_uA != uc_pdata->max_uA) {
+ debug("Invalid constraints for: %s\n", uc_pdata->name);
+ return -EINVAL;
+ }
+
+ return uc_pdata->min_uA;
+}
+
+static bool fixed_regulator_get_enable(struct udevice *dev)
+{
+ struct fixed_regulator_platdata *dev_pdata = dev_get_platdata(dev);
+
+ if (!dev_pdata->gpio.dev)
+ return false;
+
+ return dm_gpio_get_value(&dev_pdata->gpio);
+}
+
+static int fixed_regulator_set_enable(struct udevice *dev, bool enable)
+{
+ struct fixed_regulator_platdata *dev_pdata = dev_get_platdata(dev);
+ int ret;
+
+ if (!dev_pdata->gpio.dev)
+ return -ENOSYS;
+
+ ret = dm_gpio_set_value(&dev_pdata->gpio, enable);
+ if (ret) {
+ error("Can't set regulator : %s gpio to: %d\n", dev->name,
+ enable);
+ return ret;
+ }
+ return 0;
+}
+
+static const struct dm_regulator_ops fixed_regulator_ops = {
+ .get_value = fixed_regulator_get_value,
+ .get_current = fixed_regulator_get_current,
+ .get_enable = fixed_regulator_get_enable,
+ .set_enable = fixed_regulator_set_enable,
+};
+
+static const struct udevice_id fixed_regulator_ids[] = {
+ { .compatible = "regulator-fixed" },
+ { },
+};
+
+U_BOOT_DRIVER(fixed_regulator) = {
+ .name = "fixed regulator",
+ .id = UCLASS_REGULATOR,
+ .ops = &fixed_regulator_ops,
+ .of_match = fixed_regulator_ids,
+ .ofdata_to_platdata = fixed_regulator_ofdata_to_platdata,
+ .platdata_auto_alloc_size = sizeof(struct fixed_regulator_platdata),
+};
diff --git a/drivers/power/regulator/max77686.c b/drivers/power/regulator/max77686.c
new file mode 100644
index 00000000000..37ebe94521c
--- /dev/null
+++ b/drivers/power/regulator/max77686.c
@@ -0,0 +1,825 @@
+/*
+ * Copyright (C) 2012-2015 Samsung Electronics
+ *
+ * Rajeshwari Shinde <rajeshwari.s@samsung.com>
+ * Przemyslaw Marczak <p.marczak@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/max77686_pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define MODE(_id, _val, _name) { \
+ .id = _id, \
+ .register_value = _val, \
+ .name = _name, \
+}
+
+/* LDO: 1,3,4,5,9,17,18,19,20,21,22,23,24,26,26,27 */
+static struct dm_regulator_mode max77686_ldo_mode_standby1[] = {
+ MODE(OPMODE_OFF, MAX77686_LDO_MODE_OFF, "OFF"),
+ MODE(OPMODE_LPM, MAX77686_LDO_MODE_LPM, "LPM"),
+ MODE(OPMODE_STANDBY_LPM, MAX77686_LDO_MODE_STANDBY_LPM, "ON/LPM"),
+ MODE(OPMODE_ON, MAX77686_LDO_MODE_ON, "ON"),
+};
+
+/* LDO: 2,6,7,8,10,11,12,14,15,16 */
+static struct dm_regulator_mode max77686_ldo_mode_standby2[] = {
+ MODE(OPMODE_OFF, MAX77686_LDO_MODE_OFF, "OFF"),
+ MODE(OPMODE_STANDBY, MAX77686_LDO_MODE_STANDBY, "ON/OFF"),
+ MODE(OPMODE_STANDBY_LPM, MAX77686_LDO_MODE_STANDBY_LPM, "ON/LPM"),
+ MODE(OPMODE_ON, MAX77686_LDO_MODE_ON, "ON"),
+};
+
+/* Buck: 1 */
+static struct dm_regulator_mode max77686_buck_mode_standby[] = {
+ MODE(OPMODE_OFF, MAX77686_BUCK_MODE_OFF, "OFF"),
+ MODE(OPMODE_STANDBY, MAX77686_BUCK_MODE_STANDBY, "ON/OFF"),
+ MODE(OPMODE_ON, MAX77686_BUCK_MODE_ON, "ON"),
+};
+
+/* Buck: 2,3,4 */
+static struct dm_regulator_mode max77686_buck_mode_lpm[] = {
+ MODE(OPMODE_OFF, MAX77686_BUCK_MODE_OFF, "OFF"),
+ MODE(OPMODE_STANDBY, MAX77686_BUCK_MODE_STANDBY, "ON/OFF"),
+ MODE(OPMODE_LPM, MAX77686_BUCK_MODE_LPM, "LPM"),
+ MODE(OPMODE_ON, MAX77686_BUCK_MODE_ON, "ON"),
+};
+
+/* Buck: 5,6,7,8,9 */
+static struct dm_regulator_mode max77686_buck_mode_onoff[] = {
+ MODE(OPMODE_OFF, MAX77686_BUCK_MODE_OFF, "OFF"),
+ MODE(OPMODE_ON, MAX77686_BUCK_MODE_ON, "ON"),
+};
+
+static const char max77686_buck_addr[] = {
+ 0xff, 0x10, 0x12, 0x1c, 0x26, 0x30, 0x32, 0x34, 0x36, 0x38
+};
+
+static int max77686_buck_volt2hex(int buck, int uV)
+{
+ unsigned int hex = 0;
+ unsigned int hex_max = 0;
+
+ switch (buck) {
+ case 2:
+ case 3:
+ case 4:
+ /* hex = (uV - 600000) / 12500; */
+ hex = (uV - MAX77686_BUCK_UV_LMIN) / MAX77686_BUCK_UV_LSTEP;
+ hex_max = MAX77686_BUCK234_VOLT_MAX_HEX;
+ /**
+ * Those use voltage scaller - temporary not implemented
+ * so return just 0
+ */
+ return -ENOSYS;
+ default:
+ /* hex = (uV - 750000) / 50000; */
+ hex = (uV - MAX77686_BUCK_UV_HMIN) / MAX77686_BUCK_UV_HSTEP;
+ hex_max = MAX77686_BUCK_VOLT_MAX_HEX;
+ break;
+ }
+
+ if (hex >= 0 && hex <= hex_max)
+ return hex;
+
+ error("Value: %d uV is wrong for BUCK%d", uV, buck);
+ return -EINVAL;
+}
+
+static int max77686_buck_hex2volt(int buck, int hex)
+{
+ unsigned uV = 0;
+ unsigned int hex_max = 0;
+
+ if (hex < 0)
+ goto bad_hex;
+
+ switch (buck) {
+ case 2:
+ case 3:
+ case 4:
+ hex_max = MAX77686_BUCK234_VOLT_MAX_HEX;
+ if (hex > hex_max)
+ goto bad_hex;
+
+ /* uV = hex * 12500 + 600000; */
+ uV = hex * MAX77686_BUCK_UV_LSTEP + MAX77686_BUCK_UV_LMIN;
+ break;
+ default:
+ hex_max = MAX77686_BUCK_VOLT_MAX_HEX;
+ if (hex > hex_max)
+ goto bad_hex;
+
+ /* uV = hex * 50000 + 750000; */
+ uV = hex * MAX77686_BUCK_UV_HSTEP + MAX77686_BUCK_UV_HMIN;
+ break;
+ }
+
+ return uV;
+
+bad_hex:
+ error("Value: %#x is wrong for BUCK%d", hex, buck);
+ return -EINVAL;
+}
+
+static int max77686_ldo_volt2hex(int ldo, int uV)
+{
+ unsigned int hex = 0;
+
+ switch (ldo) {
+ case 1:
+ case 2:
+ case 6:
+ case 7:
+ case 8:
+ case 15:
+ hex = (uV - MAX77686_LDO_UV_MIN) / MAX77686_LDO_UV_LSTEP;
+ /* hex = (uV - 800000) / 25000; */
+ break;
+ default:
+ hex = (uV - MAX77686_LDO_UV_MIN) / MAX77686_LDO_UV_HSTEP;
+ /* hex = (uV - 800000) / 50000; */
+ }
+
+ if (hex >= 0 && hex <= MAX77686_LDO_VOLT_MAX_HEX)
+ return hex;
+
+ error("Value: %d uV is wrong for LDO%d", uV, ldo);
+ return -EINVAL;
+}
+
+static int max77686_ldo_hex2volt(int ldo, int hex)
+{
+ unsigned int uV = 0;
+
+ if (hex > MAX77686_LDO_VOLT_MAX_HEX)
+ goto bad_hex;
+
+ switch (ldo) {
+ case 1:
+ case 2:
+ case 6:
+ case 7:
+ case 8:
+ case 15:
+ /* uV = hex * 25000 + 800000; */
+ uV = hex * MAX77686_LDO_UV_LSTEP + MAX77686_LDO_UV_MIN;
+ break;
+ default:
+ /* uV = hex * 50000 + 800000; */
+ uV = hex * MAX77686_LDO_UV_HSTEP + MAX77686_LDO_UV_MIN;
+ }
+
+ return uV;
+
+bad_hex:
+ error("Value: %#x is wrong for ldo%d", hex, ldo);
+ return -EINVAL;
+}
+
+static int max77686_ldo_hex2mode(int ldo, int hex)
+{
+ if (hex > MAX77686_LDO_MODE_MASK)
+ return -EINVAL;
+
+ switch (hex) {
+ case MAX77686_LDO_MODE_OFF:
+ return OPMODE_OFF;
+ case MAX77686_LDO_MODE_LPM: /* == MAX77686_LDO_MODE_STANDBY: */
+ /* The same mode values but different meaning for each ldo */
+ switch (ldo) {
+ case 2:
+ case 6:
+ case 7:
+ case 8:
+ case 10:
+ case 11:
+ case 12:
+ case 14:
+ case 15:
+ case 16:
+ return OPMODE_STANDBY;
+ default:
+ return OPMODE_LPM;
+ }
+ case MAX77686_LDO_MODE_STANDBY_LPM:
+ return OPMODE_STANDBY_LPM;
+ case MAX77686_LDO_MODE_ON:
+ return OPMODE_ON;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int max77686_buck_hex2mode(int buck, int hex)
+{
+ if (hex > MAX77686_BUCK_MODE_MASK)
+ return -EINVAL;
+
+ switch (hex) {
+ case MAX77686_BUCK_MODE_OFF:
+ return OPMODE_OFF;
+ case MAX77686_BUCK_MODE_ON:
+ return OPMODE_ON;
+ case MAX77686_BUCK_MODE_STANDBY:
+ switch (buck) {
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ return OPMODE_STANDBY;
+ default:
+ return -EINVAL;
+ }
+ case MAX77686_BUCK_MODE_LPM:
+ switch (buck) {
+ case 2:
+ case 3:
+ case 4:
+ return OPMODE_LPM;
+ default:
+ return -EINVAL;
+ }
+ default:
+ return -EINVAL;
+ }
+}
+
+static int max77686_buck_modes(int buck, struct dm_regulator_mode **modesp)
+{
+ int ret = -EINVAL;
+
+ if (buck < 1 || buck > MAX77686_BUCK_NUM)
+ return ret;
+
+ switch (buck) {
+ case 1:
+ *modesp = max77686_buck_mode_standby;
+ ret = ARRAY_SIZE(max77686_buck_mode_standby);
+ break;
+ case 2:
+ case 3:
+ case 4:
+ *modesp = max77686_buck_mode_lpm;
+ ret = ARRAY_SIZE(max77686_buck_mode_lpm);
+ break;
+ default:
+ *modesp = max77686_buck_mode_onoff;
+ ret = ARRAY_SIZE(max77686_buck_mode_onoff);
+ }
+
+ return ret;
+}
+
+static int max77686_ldo_modes(int ldo, struct dm_regulator_mode **modesp,
+ struct udevice *dev)
+{
+ int ret = -EINVAL;
+
+ if (ldo < 1 || ldo > MAX77686_LDO_NUM)
+ return ret;
+
+ switch (ldo) {
+ case 2:
+ case 6:
+ case 7:
+ case 8:
+ case 10:
+ case 11:
+ case 12:
+ case 14:
+ case 15:
+ case 16:
+ *modesp = max77686_ldo_mode_standby2;
+ ret = ARRAY_SIZE(max77686_ldo_mode_standby2);
+ break;
+ default:
+ *modesp = max77686_ldo_mode_standby1;
+ ret = ARRAY_SIZE(max77686_ldo_mode_standby1);
+ }
+
+ return ret;
+}
+
+static int max77686_ldo_val(struct udevice *dev, int op, int *uV)
+{
+ unsigned int ret, hex, adr;
+ unsigned char val;
+ int ldo;
+
+ if (op == PMIC_OP_GET)
+ *uV = 0;
+
+ ldo = dev->driver_data;
+ if (ldo < 1 || ldo > MAX77686_LDO_NUM) {
+ error("Wrong ldo number: %d", ldo);
+ return -EINVAL;
+ }
+
+ adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
+
+ ret = pmic_read(dev->parent, adr, &val, 1);
+ if (ret)
+ return ret;
+
+ if (op == PMIC_OP_GET) {
+ val &= MAX77686_LDO_VOLT_MASK;
+ ret = max77686_ldo_hex2volt(ldo, val);
+ if (ret < 0)
+ return ret;
+ *uV = ret;
+ return 0;
+ }
+
+ hex = max77686_ldo_volt2hex(ldo, *uV);
+ if (hex < 0)
+ return hex;
+
+ val &= ~MAX77686_LDO_VOLT_MASK;
+ val |= hex;
+ ret = pmic_write(dev->parent, adr, &val, 1);
+
+ return ret;
+}
+
+static int max77686_buck_val(struct udevice *dev, int op, int *uV)
+{
+ unsigned int hex, ret, mask, adr;
+ unsigned char val;
+ int buck;
+
+ buck = dev->driver_data;
+ if (buck < 1 || buck > MAX77686_BUCK_NUM) {
+ error("Wrong buck number: %d", buck);
+ return -EINVAL;
+ }
+
+ if (op == PMIC_OP_GET)
+ *uV = 0;
+
+ /* &buck_out = ctrl + 1 */
+ adr = max77686_buck_addr[buck] + 1;
+
+ /* mask */
+ switch (buck) {
+ case 2:
+ case 3:
+ case 4:
+ /* Those use voltage scallers - will support in the future */
+ mask = MAX77686_BUCK234_VOLT_MASK;
+ return -ENOSYS;
+ default:
+ mask = MAX77686_BUCK_VOLT_MASK;
+ }
+
+ ret = pmic_read(dev->parent, adr, &val, 1);
+ if (ret)
+ return ret;
+
+ if (op == PMIC_OP_GET) {
+ val &= mask;
+ ret = max77686_buck_hex2volt(buck, val);
+ if (ret < 0)
+ return ret;
+ *uV = ret;
+ return 0;
+ }
+
+ hex = max77686_buck_volt2hex(buck, *uV);
+ if (hex < 0)
+ return hex;
+
+ val &= ~mask;
+ val |= hex;
+ ret = pmic_write(dev->parent, adr, &val, 1);
+
+ return ret;
+}
+
+static int max77686_ldo_mode(struct udevice *dev, int op, int *opmode)
+{
+ unsigned int ret, adr, mode;
+ unsigned char val;
+ int ldo;
+
+ if (op == PMIC_OP_GET)
+ *opmode = -EINVAL;
+
+ ldo = dev->driver_data;
+ if (ldo < 1 || ldo > MAX77686_LDO_NUM) {
+ error("Wrong ldo number: %d", ldo);
+ return -EINVAL;
+ }
+
+ adr = MAX77686_REG_PMIC_LDO1CTRL1 + ldo - 1;
+
+ ret = pmic_read(dev->parent, adr, &val, 1);
+ if (ret)
+ return ret;
+
+ if (op == PMIC_OP_GET) {
+ val &= MAX77686_LDO_MODE_MASK;
+ ret = max77686_ldo_hex2mode(ldo, val);
+ if (ret < 0)
+ return ret;
+ *opmode = ret;
+ return 0;
+ }
+
+ /* mode */
+ switch (*opmode) {
+ case OPMODE_OFF:
+ mode = MAX77686_LDO_MODE_OFF;
+ break;
+ case OPMODE_LPM:
+ switch (ldo) {
+ case 2:
+ case 6:
+ case 7:
+ case 8:
+ case 10:
+ case 11:
+ case 12:
+ case 14:
+ case 15:
+ case 16:
+ return -EINVAL;
+ default:
+ mode = MAX77686_LDO_MODE_LPM;
+ }
+ break;
+ case OPMODE_STANDBY:
+ switch (ldo) {
+ case 2:
+ case 6:
+ case 7:
+ case 8:
+ case 10:
+ case 11:
+ case 12:
+ case 14:
+ case 15:
+ case 16:
+ mode = MAX77686_LDO_MODE_STANDBY;
+ break;
+ default:
+ return -EINVAL;
+ }
+ break;
+ case OPMODE_STANDBY_LPM:
+ mode = MAX77686_LDO_MODE_STANDBY_LPM;
+ break;
+ case OPMODE_ON:
+ mode = MAX77686_LDO_MODE_ON;
+ break;
+ default:
+ mode = 0xff;
+ }
+
+ if (mode == 0xff) {
+ error("Wrong mode: %d for ldo%d", *opmode, ldo);
+ return -EINVAL;
+ }
+
+ val &= ~MAX77686_LDO_MODE_MASK;
+ val |= mode;
+ ret = pmic_write(dev->parent, adr, &val, 1);
+
+ return ret;
+}
+
+static int max77686_ldo_enable(struct udevice *dev, int op, bool *enable)
+{
+ int ret, on_off;
+
+ if (op == PMIC_OP_GET) {
+ ret = max77686_ldo_mode(dev, op, &on_off);
+ if (ret)
+ return ret;
+
+ switch (on_off) {
+ case OPMODE_OFF:
+ *enable = 0;
+ break;
+ case OPMODE_ON:
+ *enable = 1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ } else if (op == PMIC_OP_SET) {
+ switch (*enable) {
+ case 0:
+ on_off = OPMODE_OFF;
+ break;
+ case 1:
+ on_off = OPMODE_ON;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = max77686_ldo_mode(dev, op, &on_off);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int max77686_buck_mode(struct udevice *dev, int op, int *opmode)
+{
+ unsigned int ret, mask, adr, mode, mode_shift;
+ unsigned char val;
+ int buck;
+
+ buck = dev->driver_data;
+ if (buck < 1 || buck > MAX77686_BUCK_NUM) {
+ error("Wrong buck number: %d", buck);
+ return -EINVAL;
+ }
+
+ adr = max77686_buck_addr[buck];
+
+ /* mask */
+ switch (buck) {
+ case 2:
+ case 3:
+ case 4:
+ mode_shift = MAX77686_BUCK_MODE_SHIFT_2;
+ break;
+ default:
+ mode_shift = MAX77686_BUCK_MODE_SHIFT_1;
+ }
+
+ mask = MAX77686_BUCK_MODE_MASK << mode_shift;
+
+ ret = pmic_read(dev->parent, adr, &val, 1);
+ if (ret)
+ return ret;
+
+ if (op == PMIC_OP_GET) {
+ val &= mask;
+ val >>= mode_shift;
+ ret = max77686_buck_hex2mode(buck, val);
+ if (ret < 0)
+ return ret;
+ *opmode = ret;
+ return 0;
+ }
+
+ /* mode */
+ switch (*opmode) {
+ case OPMODE_OFF:
+ mode = MAX77686_BUCK_MODE_OFF;
+ break;
+ case OPMODE_STANDBY:
+ switch (buck) {
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ mode = MAX77686_BUCK_MODE_STANDBY << mode_shift;
+ break;
+ default:
+ mode = 0xff;
+ }
+ break;
+ case OPMODE_LPM:
+ switch (buck) {
+ case 2:
+ case 3:
+ case 4:
+ mode = MAX77686_BUCK_MODE_LPM << mode_shift;
+ break;
+ default:
+ mode = 0xff;
+ }
+ break;
+ case OPMODE_ON:
+ mode = MAX77686_BUCK_MODE_ON << mode_shift;
+ break;
+ default:
+ mode = 0xff;
+ }
+
+ if (mode == 0xff) {
+ error("Wrong mode: %d for buck: %d\n", *opmode, buck);
+ return -EINVAL;
+ }
+
+ val &= ~mask;
+ val |= mode;
+ ret = pmic_write(dev->parent, adr, &val, 1);
+
+ return ret;
+}
+
+static int max77686_buck_enable(struct udevice *dev, int op, bool *enable)
+{
+ int ret, on_off;
+
+ if (op == PMIC_OP_GET) {
+ ret = max77686_buck_mode(dev, op, &on_off);
+ if (ret)
+ return ret;
+
+ switch (on_off) {
+ case OPMODE_OFF:
+ *enable = false;
+ break;
+ case OPMODE_ON:
+ *enable = true;
+ break;
+ default:
+ return -EINVAL;
+ }
+ } else if (op == PMIC_OP_SET) {
+ switch (*enable) {
+ case 0:
+ on_off = OPMODE_OFF;
+ break;
+ case 1:
+ on_off = OPMODE_ON;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ret = max77686_buck_mode(dev, op, &on_off);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int max77686_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 = max77686_ldo_modes(dev->driver_data,
+ &uc_pdata->mode, dev);
+
+ return 0;
+}
+
+static int ldo_get_value(struct udevice *dev)
+{
+ int uV;
+ int ret;
+
+ ret = max77686_ldo_val(dev, PMIC_OP_GET, &uV);
+ if (ret)
+ return ret;
+
+ return uV;
+}
+
+static int ldo_set_value(struct udevice *dev, int uV)
+{
+ return max77686_ldo_val(dev, PMIC_OP_SET, &uV);
+}
+
+static bool ldo_get_enable(struct udevice *dev)
+{
+ bool enable = false;
+ int ret;
+
+ ret = max77686_ldo_enable(dev, PMIC_OP_GET, &enable);
+ if (ret)
+ return ret;
+
+ return enable;
+}
+
+static int ldo_set_enable(struct udevice *dev, bool enable)
+{
+ return max77686_ldo_enable(dev, PMIC_OP_SET, &enable);
+}
+
+static int ldo_get_mode(struct udevice *dev)
+{
+ int mode;
+ int ret;
+
+ ret = max77686_ldo_mode(dev, PMIC_OP_GET, &mode);
+ if (ret)
+ return ret;
+
+ return mode;
+}
+
+static int ldo_set_mode(struct udevice *dev, int mode)
+{
+ return max77686_ldo_mode(dev, PMIC_OP_SET, &mode);
+}
+
+static int max77686_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 = max77686_buck_modes(dev->driver_data,
+ &uc_pdata->mode);
+
+ return 0;
+}
+
+static int buck_get_value(struct udevice *dev)
+{
+ int uV;
+ int ret;
+
+ ret = max77686_buck_val(dev, PMIC_OP_GET, &uV);
+ if (ret)
+ return ret;
+
+ return uV;
+}
+
+static int buck_set_value(struct udevice *dev, int uV)
+{
+ return max77686_buck_val(dev, PMIC_OP_SET, &uV);
+}
+
+static bool buck_get_enable(struct udevice *dev)
+{
+ bool enable = false;
+ int ret;
+
+ ret = max77686_buck_enable(dev, PMIC_OP_GET, &enable);
+ if (ret)
+ return ret;
+
+ return enable;
+}
+
+static int buck_set_enable(struct udevice *dev, bool enable)
+{
+ return max77686_buck_enable(dev, PMIC_OP_SET, &enable);
+}
+
+static int buck_get_mode(struct udevice *dev)
+{
+ int mode;
+ int ret;
+
+ ret = max77686_buck_mode(dev, PMIC_OP_GET, &mode);
+ if (ret)
+ return ret;
+
+ return mode;
+}
+
+static int buck_set_mode(struct udevice *dev, int mode)
+{
+ return max77686_buck_mode(dev, PMIC_OP_SET, &mode);
+}
+
+static const struct dm_regulator_ops max77686_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(max77686_ldo) = {
+ .name = MAX77686_LDO_DRIVER,
+ .id = UCLASS_REGULATOR,
+ .ops = &max77686_ldo_ops,
+ .probe = max77686_ldo_probe,
+};
+
+static const struct dm_regulator_ops max77686_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(max77686_buck) = {
+ .name = MAX77686_BUCK_DRIVER,
+ .id = UCLASS_REGULATOR,
+ .ops = &max77686_buck_ops,
+ .probe = max77686_buck_probe,
+};
diff --git a/drivers/power/regulator/regulator-uclass.c b/drivers/power/regulator/regulator-uclass.c
new file mode 100644
index 00000000000..31ffd44454c
--- /dev/null
+++ b/drivers/power/regulator/regulator-uclass.c
@@ -0,0 +1,332 @@
+/*
+ * Copyright (C) 2014-2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+#include <fdtdec.h>
+#include <errno.h>
+#include <dm.h>
+#include <dm/uclass-internal.h>
+#include <power/pmic.h>
+#include <power/regulator.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int regulator_mode(struct udevice *dev, struct dm_regulator_mode **modep)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+
+ *modep = NULL;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata)
+ return -ENXIO;
+
+ *modep = uc_pdata->mode;
+ return uc_pdata->mode_count;
+}
+
+int regulator_get_value(struct udevice *dev)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->get_value)
+ return -ENOSYS;
+
+ return ops->get_value(dev);
+}
+
+int regulator_set_value(struct udevice *dev, int uV)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->set_value)
+ return -ENOSYS;
+
+ return ops->set_value(dev, uV);
+}
+
+int regulator_get_current(struct udevice *dev)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->get_current)
+ return -ENOSYS;
+
+ return ops->get_current(dev);
+}
+
+int regulator_set_current(struct udevice *dev, int uA)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->set_current)
+ return -ENOSYS;
+
+ return ops->set_current(dev, uA);
+}
+
+bool regulator_get_enable(struct udevice *dev)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->get_enable)
+ return -ENOSYS;
+
+ return ops->get_enable(dev);
+}
+
+int regulator_set_enable(struct udevice *dev, bool enable)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->set_enable)
+ return -ENOSYS;
+
+ return ops->set_enable(dev, enable);
+}
+
+int regulator_get_mode(struct udevice *dev)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->get_mode)
+ return -ENOSYS;
+
+ return ops->get_mode(dev);
+}
+
+int regulator_set_mode(struct udevice *dev, int mode)
+{
+ const struct dm_regulator_ops *ops = dev_get_driver_ops(dev);
+
+ if (!ops || !ops->set_mode)
+ return -ENOSYS;
+
+ return ops->set_mode(dev, mode);
+}
+
+int regulator_get_by_platname(const char *plat_name, struct udevice **devp)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ struct udevice *dev;
+ int ret;
+
+ *devp = NULL;
+
+ for (ret = uclass_find_first_device(UCLASS_REGULATOR, &dev); dev;
+ ret = uclass_find_next_device(&dev)) {
+ if (ret)
+ continue;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata || strcmp(plat_name, uc_pdata->name))
+ continue;
+
+ return uclass_get_device_tail(dev, 0, devp);
+ }
+
+ debug("%s: can't find: %s\n", __func__, plat_name);
+
+ return -ENODEV;
+}
+
+int regulator_get_by_devname(const char *devname, struct udevice **devp)
+{
+ return uclass_get_device_by_name(UCLASS_REGULATOR, devname, devp);
+}
+
+static int failed(int ret, bool verbose, const char *fmt, ...)
+{
+ va_list args;
+ char buf[64];
+
+ if (verbose == false)
+ return ret;
+
+ va_start(args, fmt);
+ vscnprintf(buf, sizeof(buf), fmt, args);
+ va_end(args);
+
+ printf(buf);
+
+ if (!ret)
+ return 0;
+
+ printf(" (ret: %d)", ret);
+
+ return ret;
+}
+
+int regulator_autoset(const char *platname,
+ struct udevice **devp,
+ bool verbose)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ struct udevice *dev;
+ int ret;
+
+ if (devp)
+ *devp = NULL;
+
+ ret = regulator_get_by_platname(platname, &dev);
+ if (ret) {
+ error("Can get the regulator: %s!", platname);
+ return ret;
+ }
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata) {
+ error("Can get the regulator %s uclass platdata!", platname);
+ return -ENXIO;
+ }
+
+ if (!uc_pdata->always_on && !uc_pdata->boot_on)
+ goto retdev;
+
+ if (verbose)
+ printf("%s@%s: ", dev->name, uc_pdata->name);
+
+ /* Those values are optional (-ENODATA if unset) */
+ if ((uc_pdata->min_uV != -ENODATA) &&
+ (uc_pdata->max_uV != -ENODATA) &&
+ (uc_pdata->min_uV == uc_pdata->max_uV)) {
+ ret = regulator_set_value(dev, uc_pdata->min_uV);
+ if (failed(ret, verbose, "set %d uV", uc_pdata->min_uV))
+ goto exit;
+ }
+
+ /* Those values are optional (-ENODATA if unset) */
+ if ((uc_pdata->min_uA != -ENODATA) &&
+ (uc_pdata->max_uA != -ENODATA) &&
+ (uc_pdata->min_uA == uc_pdata->max_uA)) {
+ ret = regulator_set_current(dev, uc_pdata->min_uA);
+ if (failed(ret, verbose, "; set %d uA", uc_pdata->min_uA))
+ goto exit;
+ }
+
+ ret = regulator_set_enable(dev, true);
+ if (failed(ret, verbose, "; enabling", uc_pdata->min_uA))
+ goto exit;
+
+retdev:
+ if (devp)
+ *devp = dev;
+exit:
+ if (verbose)
+ printf("\n");
+
+ return ret;
+}
+
+int regulator_list_autoset(const char *list_platname[],
+ struct udevice *list_devp[],
+ bool verbose)
+{
+ struct udevice *dev;
+ int error = 0, i = 0, ret;
+
+ while (list_platname[i]) {
+ ret = regulator_autoset(list_platname[i], &dev, verbose);
+ if (ret & !error)
+ error = ret;
+
+ if (list_devp)
+ list_devp[i] = dev;
+
+ i++;
+ }
+
+ return error;
+}
+
+static bool regulator_name_is_unique(struct udevice *check_dev,
+ const char *check_name)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ struct udevice *dev;
+ int check_len = strlen(check_name);
+ int ret;
+ int len;
+
+ for (ret = uclass_find_first_device(UCLASS_REGULATOR, &dev); dev;
+ ret = uclass_find_next_device(&dev)) {
+ if (ret || dev == check_dev)
+ continue;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ len = strlen(uc_pdata->name);
+ if (len != check_len)
+ continue;
+
+ if (!strcmp(uc_pdata->name, check_name))
+ return false;
+ }
+
+ return true;
+}
+
+static int regulator_post_bind(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ int offset = dev->of_offset;
+ const void *blob = gd->fdt_blob;
+ const char *property = "regulator-name";
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata)
+ return -ENXIO;
+
+ /* Regulator's mandatory constraint */
+ uc_pdata->name = fdt_getprop(blob, offset, property, NULL);
+ if (!uc_pdata->name) {
+ debug("%s: dev: %s has no property 'regulator-name'\n",
+ __func__, dev->name);
+ return -EINVAL;
+ }
+
+ if (regulator_name_is_unique(dev, uc_pdata->name))
+ return 0;
+
+ error("\"%s\" of dev: \"%s\", has nonunique value: \"%s\"",
+ property, dev->name, uc_pdata->name);
+
+ return -EINVAL;
+}
+
+static int regulator_pre_probe(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ int offset = dev->of_offset;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+ if (!uc_pdata)
+ return -ENXIO;
+
+ /* Regulator's optional constraints */
+ uc_pdata->min_uV = fdtdec_get_int(gd->fdt_blob, offset,
+ "regulator-min-microvolt", -ENODATA);
+ uc_pdata->max_uV = fdtdec_get_int(gd->fdt_blob, offset,
+ "regulator-max-microvolt", -ENODATA);
+ uc_pdata->min_uA = fdtdec_get_int(gd->fdt_blob, offset,
+ "regulator-min-microamp", -ENODATA);
+ uc_pdata->max_uA = fdtdec_get_int(gd->fdt_blob, offset,
+ "regulator-max-microamp", -ENODATA);
+ uc_pdata->always_on = fdtdec_get_bool(gd->fdt_blob, offset,
+ "regulator-always-on");
+ uc_pdata->boot_on = fdtdec_get_bool(gd->fdt_blob, offset,
+ "regulator-boot-on");
+
+ return 0;
+}
+
+UCLASS_DRIVER(regulator) = {
+ .id = UCLASS_REGULATOR,
+ .name = "regulator",
+ .post_bind = regulator_post_bind,
+ .pre_probe = regulator_pre_probe,
+ .per_device_platdata_auto_alloc_size =
+ sizeof(struct dm_regulator_uclass_platdata),
+};
diff --git a/drivers/power/regulator/sandbox.c b/drivers/power/regulator/sandbox.c
new file mode 100644
index 00000000000..2cca579a571
--- /dev/null
+++ b/drivers/power/regulator/sandbox.c
@@ -0,0 +1,355 @@
+/*
+ * Copyright (C) 2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@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/sandbox_pmic.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define MODE(_id, _val, _name) [_id] = { \
+ .id = _id, \
+ .register_value = _val, \
+ .name = _name, \
+}
+
+#define RANGE(_min, _max, _step) { \
+ .min = _min, \
+ .max = _max, \
+ .step = _step, \
+}
+
+/*
+ * struct output_range - helper structure type to define the range of output
+ * operating values (current/voltage), limited by the PMIC IC design.
+ *
+ * @min - minimum value
+ * @max - maximum value
+ * @step - step value
+*/
+struct output_range {
+ int min;
+ int max;
+ int step;
+};
+
+/* BUCK: 1,2 - voltage range */
+static struct output_range buck_voltage_range[] = {
+ RANGE(OUT_BUCK1_UV_MIN, OUT_BUCK1_UV_MAX, OUT_BUCK1_UV_STEP),
+ RANGE(OUT_BUCK2_UV_MIN, OUT_BUCK2_UV_MAX, OUT_BUCK2_UV_STEP),
+};
+
+/* BUCK: 1 - current range */
+static struct output_range buck_current_range[] = {
+ RANGE(OUT_BUCK1_UA_MIN, OUT_BUCK1_UA_MAX, OUT_BUCK1_UA_STEP),
+};
+
+/* BUCK operating modes */
+static struct dm_regulator_mode sandbox_buck_modes[] = {
+ MODE(BUCK_OM_OFF, OM2REG(BUCK_OM_OFF), "OFF"),
+ MODE(BUCK_OM_ON, OM2REG(BUCK_OM_ON), "ON"),
+ MODE(BUCK_OM_PWM, OM2REG(BUCK_OM_PWM), "PWM"),
+};
+
+/* LDO: 1,2 - voltage range */
+static struct output_range ldo_voltage_range[] = {
+ RANGE(OUT_LDO1_UV_MIN, OUT_LDO1_UV_MAX, OUT_LDO1_UV_STEP),
+ RANGE(OUT_LDO2_UV_MIN, OUT_LDO2_UV_MAX, OUT_LDO2_UV_STEP),
+};
+
+/* LDO: 1 - current range */
+static struct output_range ldo_current_range[] = {
+ RANGE(OUT_LDO1_UA_MIN, OUT_LDO1_UA_MAX, OUT_LDO1_UA_STEP),
+};
+
+/* LDO operating modes */
+static struct dm_regulator_mode sandbox_ldo_modes[] = {
+ MODE(LDO_OM_OFF, OM2REG(LDO_OM_OFF), "OFF"),
+ MODE(LDO_OM_ON, OM2REG(LDO_OM_ON), "ON"),
+ MODE(LDO_OM_SLEEP, OM2REG(LDO_OM_SLEEP), "SLEEP"),
+ MODE(LDO_OM_STANDBY, OM2REG(LDO_OM_STANDBY), "STANDBY"),
+};
+
+int out_get_value(struct udevice *dev, int output_count, int reg_type,
+ struct output_range *range)
+{
+ uint8_t reg_val;
+ uint reg;
+ int ret;
+
+ if (dev->driver_data > output_count) {
+ error("Unknown regulator number: %lu for PMIC %s!",
+ dev->driver_data, dev->name);
+ return -EINVAL;
+ }
+
+ reg = (dev->driver_data - 1) * OUT_REG_COUNT + reg_type;
+ ret = pmic_read(dev->parent, reg, &reg_val, 1);
+ if (ret) {
+ error("PMIC read failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = REG2VAL(range[dev->driver_data - 1].min,
+ range[dev->driver_data - 1].step,
+ reg_val);
+
+ return ret;
+}
+
+static int out_set_value(struct udevice *dev, int output_count, int reg_type,
+ struct output_range *range, int value)
+{
+ uint8_t reg_val;
+ uint reg;
+ int ret;
+ int max_value;
+
+ if (dev->driver_data > output_count) {
+ error("Unknown regulator number: %lu for PMIC %s!",
+ dev->driver_data, dev->name);
+ return -EINVAL;
+ }
+
+ max_value = range[dev->driver_data - 1].max;
+ if (value > max_value) {
+ error("Wrong value for %s: %lu. Max is: %d.",
+ dev->name, dev->driver_data, max_value);
+ return -EINVAL;
+ }
+
+ reg_val = VAL2REG(range[dev->driver_data - 1].min,
+ range[dev->driver_data - 1].step,
+ value);
+
+ reg = (dev->driver_data - 1) * OUT_REG_COUNT + reg_type;
+ ret = pmic_write(dev->parent, reg, &reg_val, 1);
+ if (ret) {
+ error("PMIC write failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int out_get_mode(struct udevice *dev)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ uint8_t reg_val;
+ uint reg;
+ int ret;
+ int i;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+
+ reg = (dev->driver_data - 1) * OUT_REG_COUNT + OUT_REG_OM;
+ ret = pmic_read(dev->parent, reg, &reg_val, 1);
+ if (ret) {
+ error("PMIC read failed: %d\n", ret);
+ return ret;
+ }
+
+ for (i = 0; i < uc_pdata->mode_count; i++) {
+ if (reg_val == uc_pdata->mode[i].register_value)
+ return uc_pdata->mode[i].id;
+ }
+
+ error("Unknown operation mode for %s!", dev->name);
+ return -EINVAL;
+}
+
+static int out_set_mode(struct udevice *dev, int mode)
+{
+ struct dm_regulator_uclass_platdata *uc_pdata;
+ int reg_val = -1;
+ uint reg;
+ int ret;
+ int i;
+
+ uc_pdata = dev_get_uclass_platdata(dev);
+
+ if (mode >= uc_pdata->mode_count)
+ return -EINVAL;
+
+ for (i = 0; i < uc_pdata->mode_count; i++) {
+ if (mode == uc_pdata->mode[i].id) {
+ reg_val = uc_pdata->mode[i].register_value;
+ break;
+ }
+ }
+
+ if (reg_val == -1) {
+ error("Unknown operation mode for %s!", dev->name);
+ return -EINVAL;
+ }
+
+ reg = (dev->driver_data - 1) * OUT_REG_COUNT + OUT_REG_OM;
+ ret = pmic_write(dev->parent, reg, (uint8_t *)&reg_val, 1);
+ if (ret) {
+ error("PMIC write failed: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int buck_get_voltage(struct udevice *dev)
+{
+ return out_get_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UV,
+ buck_voltage_range);
+}
+
+static int buck_set_voltage(struct udevice *dev, int uV)
+{
+ return out_set_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UV,
+ buck_voltage_range, uV);
+}
+
+static int buck_get_current(struct udevice *dev)
+{
+ /* BUCK2 - unsupported */
+ if (dev->driver_data == 2)
+ return -ENOSYS;
+
+ return out_get_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UA,
+ buck_current_range);
+}
+
+static int buck_set_current(struct udevice *dev, int uA)
+{
+ /* BUCK2 - unsupported */
+ if (dev->driver_data == 2)
+ return -ENOSYS;
+
+ return out_set_value(dev, SANDBOX_BUCK_COUNT, OUT_REG_UA,
+ buck_current_range, uA);
+}
+
+static bool buck_get_enable(struct udevice *dev)
+{
+ if (out_get_mode(dev) == BUCK_OM_OFF)
+ return false;
+
+ return true;
+}
+
+static int buck_set_enable(struct udevice *dev, bool enable)
+{
+ return out_set_mode(dev, enable ? BUCK_OM_ON : BUCK_OM_OFF);
+}
+
+static int sandbox_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 = sandbox_buck_modes;
+ uc_pdata->mode_count = ARRAY_SIZE(sandbox_buck_modes);
+
+ return 0;
+}
+
+static const struct dm_regulator_ops sandbox_buck_ops = {
+ .get_value = buck_get_voltage,
+ .set_value = buck_set_voltage,
+ .get_current = buck_get_current,
+ .set_current = buck_set_current,
+ .get_enable = buck_get_enable,
+ .set_enable = buck_set_enable,
+ .get_mode = out_get_mode,
+ .set_mode = out_set_mode,
+};
+
+U_BOOT_DRIVER(sandbox_buck) = {
+ .name = SANDBOX_BUCK_DRIVER,
+ .id = UCLASS_REGULATOR,
+ .ops = &sandbox_buck_ops,
+ .probe = sandbox_buck_probe,
+};
+
+static int ldo_get_voltage(struct udevice *dev)
+{
+ return out_get_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UV,
+ ldo_voltage_range);
+}
+
+static int ldo_set_voltage(struct udevice *dev, int uV)
+{
+ return out_set_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UV,
+ ldo_voltage_range, uV);
+}
+
+static int ldo_get_current(struct udevice *dev)
+{
+ /* LDO2 - unsupported */
+ if (dev->driver_data == 2)
+ return -ENOSYS;
+
+ return out_get_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UA,
+ ldo_current_range);
+}
+
+static int ldo_set_current(struct udevice *dev, int uA)
+{
+ /* LDO2 - unsupported */
+ if (dev->driver_data == 2)
+ return -ENOSYS;
+
+ return out_set_value(dev, SANDBOX_LDO_COUNT, OUT_REG_UA,
+ ldo_current_range, uA);
+}
+
+static bool ldo_get_enable(struct udevice *dev)
+{
+ if (out_get_mode(dev) == LDO_OM_OFF)
+ return false;
+
+ return true;
+}
+
+static int ldo_set_enable(struct udevice *dev, bool enable)
+{
+ return out_set_mode(dev, enable ? LDO_OM_ON : LDO_OM_OFF);
+}
+
+static int sandbox_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 = sandbox_ldo_modes;
+ uc_pdata->mode_count = ARRAY_SIZE(sandbox_ldo_modes);
+
+ return 0;
+}
+
+static const struct dm_regulator_ops sandbox_ldo_ops = {
+ .get_value = ldo_get_voltage,
+ .set_value = ldo_set_voltage,
+ .get_current = ldo_get_current,
+ .set_current = ldo_set_current,
+ .get_enable = ldo_get_enable,
+ .set_enable = ldo_set_enable,
+ .get_mode = out_get_mode,
+ .set_mode = out_set_mode,
+};
+
+U_BOOT_DRIVER(sandbox_ldo) = {
+ .name = SANDBOX_LDO_DRIVER,
+ .id = UCLASS_REGULATOR,
+ .ops = &sandbox_ldo_ops,
+ .probe = sandbox_ldo_probe,
+};
generated by cgit v1.2.3 (git 2.0.4) at 2025-09-26 07:14:02 +0000