Add Hi655x regulator driver.
Signed-off-by: Fei Wang <w.f@xxxxxxxxxx>
---
drivers/regulator/Kconfig | 8 +
drivers/regulator/Makefile | 1 +
drivers/regulator/hi655x-regulator.c | 517 ++++++++++++++++++++++++++++
include/linux/regulator/hi655x-regulator.h | 69 ++++
4 files changed, 595 insertions(+)
create mode 100644 drivers/regulator/hi655x-regulator.c
create mode 100644 include/linux/regulator/hi655x-regulator.h
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 64bccff..d13210b 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -261,6 +261,14 @@ config REGULATOR_HI6421
21 general purpose LDOs, 3 dedicated LDOs, and 5 BUCKs. All
of them come with support to either ECO (idle) or sleep mode.
+config REGULATOR_HI655X
+ tristate "Hisilicon HI655X PMIC regulators support"
+ depends on ARCH_HISI
+ depends on MFD_HI655X_PMIC && OF
+ help
+ This driver provides support for the voltage regulators of the
+ Hisilicon Hi655x PMIC device.
+
config REGULATOR_ISL9305
tristate "Intersil ISL9305 regulator"
depends on I2C
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 0f81749..8e4db96 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o
obj-$(CONFIG_REGULATOR_FAN53555) += fan53555.o
obj-$(CONFIG_REGULATOR_GPIO) += gpio-regulator.o
obj-$(CONFIG_REGULATOR_HI6421) += hi6421-regulator.o
+obj-$(CONFIG_REGULATOR_HI655X) += hi655x-regulator.o
obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o
obj-$(CONFIG_REGULATOR_ISL9305) += isl9305.o
obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o
diff --git a/drivers/regulator/hi655x-regulator.c b/drivers/regulator/hi655x-regulator.c
new file mode 100644
index 0000000..3423a84
--- /dev/null
+++ b/drivers/regulator/hi655x-regulator.c
@@ -0,0 +1,517 @@
+/*
+ * Device driver for regulators in HI655X IC
+ *
+ * Copyright (c) 2015 Hisilicon.
+ *
+ * Fei Wang <w.f@xxxxxxxxxx>
+ *
+ * this regulator's probe function will be called lots of times,,
+ * because of there are lots of regulator nodes in dtb.
+ * so,that's say, the driver must be inited before the regulator nodes
+ * registor to system.
+ *
+ * Makefile have proved my guess, please refor to the makefile.
+ * when the code is rebuild i hope we can build pmu sub_system.
+ * init order can not base on compile
+ */
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/platform_device.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/of_address.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/delay.h>
+#include <linux/time.h>
+#include <linux/regulator/hi655x-regulator.h>
+#include <linux/mfd/hi655x-pmic.h>
+#include <linux/regmap.h>
+
+#define REG_VALUE_SETBITS(reg_value, pos, bits, bits_value) \
+ (reg_value = (reg_value & \
+ ~((((unsigned int)1 << bits) - 1) << pos)) | \
+ ((unsigned int)(bits_value & \
+ (((unsigned int)1 << bits) - 1)) << pos))
+
+#define REG_VALUE_GETBITS(reg_value, pos, bits) \
+ ((reg_value >> pos) & (((unsigned int)1 << bits) - 1))
+
+static int hi655x_regulator_pmic_is_enabled(struct regulator_dev *rdev)
+{
+ int ret = 0;
+ unsigned int value = 0;
+
+ struct hi655x_regulator *sreg = rdev_get_drvdata(rdev);
+ struct hi655x_regulator_ctrl_regs *ctrl_regs = &(sreg->ctrl_regs);
+ struct hi655x_regulator_ctrl_data *ctrl_data = &(sreg->ctrl_data);
+
+ /*
+ * regulator is all set,but the pmu is only subset.
+ * maybe this "buck"/"ldo"/"lvs" is not contrl by a core.
+ * and in regulator have a "status" member ("okey" or "disable").
+ */
+ regmap_read(rdev->regmap, ctrl_regs->status_reg, &value);
+ ret = (int)REG_VALUE_GETBITS(value, ctrl_data->shift,
+ ctrl_data->mask);
+
+ return ret;
+}
+
+static int hi655x_regulator_pmic_enable(struct regulator_dev *rdev)
+{
+ int ret = 0;
+ unsigned char value_u8 = 0;
+ unsigned int value_u32 = 0;
+ struct hi655x_regulator *sreg = rdev_get_drvdata(rdev);
+ struct hi655x_regulator_ctrl_regs *ctrl_regs = &(sreg->ctrl_regs);
+ struct hi655x_regulator_ctrl_data *ctrl_data = &(sreg->ctrl_data);
+
+ REG_VALUE_SETBITS(value_u32, ctrl_data->shift, ctrl_data->mask, 0x1);
+ value_u8 = (unsigned char)value_u32;
+ regmap_write(rdev->regmap, ctrl_regs->enable_reg, value_u8);
+ udelay(sreg->off_on_delay);
+
+ return ret;
+}
+
+static int hi655x_regulator_pmic_disable(struct regulator_dev *rdev)
+{
+ int ret = 0;
+ int flag = 1;
+ unsigned char value_u8 = 0;
+ unsigned int value_u32 = 0;
+
+ struct hi655x_regulator *sreg = rdev_get_drvdata(rdev);
+ struct hi655x_regulator_ctrl_regs *ctrl_regs = &(sreg->ctrl_regs);
+ struct hi655x_regulator_ctrl_data *ctrl_data = &(sreg->ctrl_data);
+
+ /*
+ * regulator is all set,but the pmu is only subset.
+ * maybe this "buck"/"ldo"/"lvs" is not contrl by a core.
+ * and in regulator have a "status" member (okey or disable).
+ * maybe we can del some regulator which is not contrl by core.
+ */
+ if (sreg->type == PMIC_BOOST_TYPE)
+ flag = 0;
+
+ /*
+ * for flag init value = 1;
+ */
+
+ REG_VALUE_SETBITS(value_u32, ctrl_data->shift, ctrl_data->mask, flag);
+ value_u8 = (unsigned char)value_u32;
+ regmap_write(rdev->regmap, ctrl_regs->disable_reg, value_u8);
+ return ret;
+}
+
+static int hi655x_regulator_pmic_list_voltage_linear(struct regulator_dev *rdev,
+ unsigned int selector)
+{
+
+ struct hi655x_regulator *sreg = rdev_get_drvdata(rdev);
+ /*
+ * regulator is all set,but the pmu is only subset.
+ * maybe this "buck"/"ldo"/"lvs" is not contrl by a core.
+ * and in regulator have a "status" member (okey or disable).
+ * maybe we can del some regulator which is not contrl by core.
+ * we will return min_uV
+ */
+ if (sreg->type == PMIC_LVS_TYPE)
+ return 900000;
+
+ if (selector >= sreg->vol_numb) {
+ pr_err("selector err %s %d\n", __func__, __LINE__);
+ return -1;
+ }
+
+ return sreg->vset_table[selector];
+}
+
+static int hi655x_regulator_pmic_get_voltage(struct regulator_dev *rdev)
+{
+ int index = 0;
+ unsigned int value = 0;
+
+ struct hi655x_regulator *sreg = rdev_get_drvdata(rdev);
+ struct hi655x_regulator_vset_regs *vset_regs = &(sreg->vset_regs);
+ struct hi655x_regulator_vset_data *vset_data = &(sreg->vset_data);
+
+ if (sreg->type == PMIC_LVS_TYPE)
+ return 900000;
+
+ regmap_read(rdev->regmap, vset_regs->vset_reg, &value);
+ index = (unsigned int)REG_VALUE_GETBITS(value,
+ vset_data->shift, vset_data->mask);
+
+ return sreg->vset_table[index];
+}
+
+static int hi655x_regulator_pmic_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV, unsigned *selector)
+{
+ int i = 0;
+ int ret = 0;
+ int vol = 0;
+ unsigned int value = 0;
+
+ struct hi655x_regulator *sreg = rdev_get_drvdata(rdev);
+ struct hi655x_regulator_vset_regs *vset_regs = &(sreg->vset_regs);
+ struct hi655x_regulator_vset_data *vset_data = &(sreg->vset_data);
+
+ if (sreg->type == PMIC_LVS_TYPE)
+ return 0;
+ /*
+ * search the matched vol and get its index
+ */
+ for (i = 0; i < sreg->vol_numb; i++) {
+ vol = sreg->vset_table[i];
+
+ if ((vol >= min_uV) && (vol <= max_uV))
+ break;
+ }
+
+ if (i == sreg->vol_numb)
+ return -1;
+
+
+ regmap_read(rdev->regmap, vset_regs->vset_reg, &value);
+ REG_VALUE_SETBITS(value, vset_data->shift, vset_data->mask, i);
+ regmap_write(rdev->regmap, vset_regs->vset_reg, value);
+ *selector = i;
+
+ return ret;
+}
+
+static unsigned int hi655x_regulator_pmic_get_mode(
+ struct regulator_dev *rdev)
+{
+ return REGULATOR_MODE_NORMAL;
+}
+
+static int hi655x_regulator_pmic_set_mode(struct regulator_dev *rdev,
+ unsigned int mode)
+
+{
+ return 0;
+}
+
+static unsigned int hi655x_regulator_pmic_get_optimum_mode(
+ struct regulator_dev *rdev, int input_uV, int output_uV, int load_uA)
+
+{
+ return REGULATOR_MODE_NORMAL;
+}
+
+static struct regulator_ops hi655x_regulator_pmic_rops = {
+ .is_enabled = hi655x_regulator_pmic_is_enabled,
+ .enable = hi655x_regulator_pmic_enable,
+ .disable = hi655x_regulator_pmic_disable,
+ .list_voltage = hi655x_regulator_pmic_list_voltage_linear,
+ .get_voltage = hi655x_regulator_pmic_get_voltage,
+ .set_voltage = hi655x_regulator_pmic_set_voltage,
+ .get_mode = hi655x_regulator_pmic_get_mode,
+ .set_mode = hi655x_regulator_pmic_set_mode,
+ .get_optimum_mode = hi655x_regulator_pmic_get_optimum_mode,
+};
+
+static int hi655x_regualtor_pmic_dt_parse(struct hi655x_regulator *sreg,
+ struct platform_device *pdev)
+{
+ return 0;
+}
+
+static const struct hi655x_regulator hi655x_regulator_pmic = {
+ .rdesc = {
+ .ops = &hi655x_regulator_pmic_rops,
+ .type = REGULATOR_VOLTAGE,
+ .owner = THIS_MODULE,
+ },
+ .dt_parse = hi655x_regualtor_pmic_dt_parse,
+};
+
+
+static const struct of_device_id of_hi655x_regulator_match_tbl[] = {
+ {
+ .compatible = "hisilicon,hi655x-regulator-pmic",
+ .data = &hi655x_regulator_pmic,
+ },
+ { /* end */ }
+};
+
+static struct regulator_init_data *hi655x_of_get_regulator_init_data(
+ struct device *dev, struct device_node *np)
+{
+ struct regulator_init_data *init_data = NULL;
+ const __be32 *num_consumer_supplies = NULL;
+ struct regulator_consumer_supply *consumer_supplies = NULL;
+ int consumer_id = 0;
+
+ init_data = devm_kzalloc(dev, sizeof(*init_data), GFP_KERNEL);
+ if (!init_data)
+ return NULL;
+
+ num_consumer_supplies = of_get_property(np,
+ "hisilicon,num_consumer_supplies", NULL);
+
+ if ((NULL == num_consumer_supplies) || (0 == *num_consumer_supplies)) {
+ dev_warn(dev, "%s no consumer_supplies\n", __func__);
+ return init_data;
+ }
+
+ init_data->num_consumer_supplies = be32_to_cpu(*num_consumer_supplies);
+ init_data->consumer_supplies = (struct regulator_consumer_supply *)
+ devm_kzalloc(dev, init_data->num_consumer_supplies *
+ sizeof(struct regulator_consumer_supply), GFP_KERNEL);
+
+ if (NULL == init_data->consumer_supplies) {
+ dev_err(dev, "%s devm_kzalloc consumer_supplies err\n",
+ __func__);
+ return NULL;
+ }
+
+ consumer_supplies = init_data->consumer_supplies;
+
+ for (consumer_id = 0; consumer_id < init_data->num_consumer_supplies;
+ consumer_id++, consumer_supplies++) {
+ int ret = of_property_read_string_index(np,
+ "hisilicon,consumer-supplies",
+ consumer_id, &consumer_supplies->supply);
+
+ if (ret) {
+ dev_err(dev,
+ "%s %s of_property_read_string_index consumer-supplies err\n",
+ __func__, np->name);
+ }
+ }
+
+ return init_data;
+}
+
+static int hi655x_of_get_regulator_constraint(
+ struct regulation_constraints *constraints, struct device_node *np)
+{
+ const __be32 *min_uV, *max_uV;
+ unsigned int *valid_modes_mask;
+ unsigned int *valid_ops_mask;
+ unsigned int *initial_mode;
+
+ if (!np)
+ return -1;
+
+ if (!constraints)
+ return -1;
+
+ (constraints)->name = of_get_property(np, "regulator-name", NULL);
+
+ min_uV = of_get_property(np, "regulator-min-microvolt", NULL);
+ if (min_uV) {
+ (constraints)->min_uV = be32_to_cpu(*min_uV);
+ (constraints)->min_uA = be32_to_cpu(*min_uV);
+ }
+
+ max_uV = of_get_property(np, "regulator-max-microvolt", NULL);
+ if (max_uV) {
+ (constraints)->max_uV = be32_to_cpu(*max_uV);
+ (constraints)->max_uA = be32_to_cpu(*max_uV);
+ }
+
+ valid_modes_mask = (unsigned int *)of_get_property(np,
+ "hisilicon,valid-modes-mask", NULL);
+
+ if (valid_modes_mask)
+ (constraints)->valid_modes_mask =
+ be32_to_cpu(*valid_modes_mask);
+
+ valid_ops_mask = (unsigned int *)of_get_property(np,
+ "hisilicon,valid-ops-mask", NULL);
+ if (valid_ops_mask)
+ (constraints)->valid_ops_mask =
+ be32_to_cpu(*valid_ops_mask);
+
+ initial_mode = (unsigned int *)of_get_property(np,
+ "hisilicon,initial-mode", NULL);
+ if (initial_mode)
+ (constraints)->initial_mode = be32_to_cpu(*initial_mode);
+
+ (constraints)->always_on = !!(of_find_property(np,
+ "regulator-always-on", NULL));
+
+ (constraints)->boot_on = !!(of_find_property(np,
+ "regulator-boot-on", NULL));
+ return 0;
+
+}
+
+static int hi655x_of_get_regulator_sreg(struct hi655x_regulator *sreg,
+ struct device *dev, struct device_node *np)
+{
+ int *vol_numb;
+ unsigned int *off_on_delay;
+ enum hi655x_regulator_type *regulator_type;
+ const char *status = NULL;
+ unsigned int *vset_table = NULL;
+ int *regulator_id;
+
+ status = of_get_property(np, "hisilicon,regulator-status", NULL);
+ if (status)
+ sreg->status = !(strcmp(status, "okey"));
+
+ regulator_type = (enum hi655x_regulator_type *)of_get_property(np,
+ "hisilicon,regulator-type", NULL);
+
+ if (regulator_type)
+ sreg->type = be32_to_cpu(*regulator_type);
+
+ off_on_delay = (unsigned int *)of_get_property(np,
+ "hisilicon,off-on-delay", NULL);
+ if (off_on_delay)
+ sreg->off_on_delay = be32_to_cpu(*off_on_delay);
+
+ (void)of_property_read_u32_array(np, "hisilicon,ctrl-regs",
+ (unsigned int *)(&sreg->ctrl_regs), 0x3);
+
+ (void)of_property_read_u32_array(np, "hisilicon,ctrl-data",
+ (unsigned int *)(&sreg->ctrl_data), 0x2);
+
+ (void)of_property_read_u32_array(np, "hisilicon,vset-regs",
+ (unsigned int *)(&sreg->vset_regs), 0x1);
+
+ (void)of_property_read_u32_array(np, "hisilicon,vset-data",
+ (unsigned int *)(&sreg->vset_data), 0x2);
+
+ vol_numb = (int *)of_get_property(np, "hisilicon,regulator-n-vol",
+ NULL);
+ if (vol_numb)
+ sreg->vol_numb = be32_to_cpu(*vol_numb);
+
+ regulator_id = (int *)of_get_property(np,
+ "hisilicon, hisi-scharger-regulator-id", NULL);
+
+ if (regulator_id)
+ sreg->regulator_id = be32_to_cpu(*regulator_id);
+
+ vset_table = devm_kzalloc(dev, sreg->vol_numb * sizeof(int),
+ GFP_KERNEL);
+ if (!vset_table)
+ return -1;
+
+ (void)of_property_read_u32_array(np,
+ "hisilicon,vset-table", (unsigned int *)vset_table,
+ sreg->vol_numb);
+ sreg->vset_table = vset_table;
+
+ return 0;
+
+}
+
+static int hi655x_regulator_probe(struct platform_device *pdev)
+{
+
+ int ret = 0;
+ struct device *dev = &pdev->dev;
+ struct device_node *np = dev->of_node;
+ struct hi655x_pmic *pmic;
+ struct regulator_dev *rdev = NULL;
+ struct regulator_desc *rdesc = NULL;
+ struct hi655x_regulator *sreg = NULL;
+ struct regulator_init_data *initdata = NULL;
+ const struct of_device_id *match = NULL;
+ const struct hi655x_regulator *template = NULL;
+ struct regulator_config config = { };
+
+ pmic = dev_get_drvdata(dev->parent);
+
+ /*
+ * build hi655x_regulator device
+ */
+
+ /* to check which type of regulator this is */
+ match = of_match_device(of_hi655x_regulator_match_tbl, &pdev->dev);
+
+ if (NULL == match) {
+ dev_err(dev, "of match hi655x regulator fail!\n\r");
+ return -EINVAL;
+ }
+ /*tempdev is regulator device*/
+ template = match->data;
+
+ /*
+ *initdata mem will release auto;
+ *this is kernel 3.10 import.
+ */
+
+ /*just for getting "std regulator node" value-key about constraint*/
+ initdata = hi655x_of_get_regulator_init_data(dev, np);
+ if (!initdata) {
+ dev_err(dev, "get regulator init data error !\n");
+ return -EINVAL;
+ }
+
+ ret = hi655x_of_get_regulator_constraint(&initdata->constraints, np);
+ if (!!ret) {
+ dev_err(dev, "get regulator constraint error !\n");
+ return -EINVAL;
+ }
+
+ /* TODO:hi655x regulator supports two modes */
+ sreg = kmemdup(template, sizeof(*sreg), GFP_KERNEL);
+ if (!sreg)
+ return -ENOMEM;
+
+ if (0 != hi655x_of_get_regulator_sreg(sreg, dev, np)) {
+ kfree(sreg);
+ return -EINVAL;
+ }
+
+ rdesc = &sreg->rdesc;
+ rdesc->n_voltages = sreg->vol_numb;
+ rdesc->name = initdata->constraints.name;
+ rdesc->id = sreg->regulator_id;
+ rdesc->min_uV = initdata->constraints.min_uV;
+
+ /*just for skeleton for future*/
+ /* to parse device tree data for regulator specific */
+ config.dev = &pdev->dev;
+ config.init_data = initdata;
+ config.driver_data = sreg;
+ config.regmap = pmic->regmap;
+ config.of_node = pdev->dev.of_node;
+ /* register regulator */
+ rdev = regulator_register(rdesc, &config);
+ if (IS_ERR(rdev)) {
+ dev_err(dev, "regulator failed to register %s\n", rdesc->name);
+ ret = PTR_ERR(rdev);
+ return -EINVAL;
+ }
+
+ platform_set_drvdata(pdev, rdev);
+ regulator_has_full_constraints();
+
+ return ret;
+}
+
+static int hi655x_regulator_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static struct platform_driver hi655x_regulator_driver = {
+ .driver = {
+ .name = "hi655x_regulator",
+ .owner = THIS_MODULE,
+ .of_match_table = of_hi655x_regulator_match_tbl,
+ },
+ .probe = hi655x_regulator_probe,
+ .remove = hi655x_regulator_remove,
+};
+module_platform_driver(hi655x_regulator_driver);
+
+MODULE_AUTHOR("Fei Wang <w.f@xxxxxxxxxx>");
+MODULE_DESCRIPTION("Hisi hi655x regulator driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/regulator/hi655x-regulator.h b/include/linux/regulator/hi655x-regulator.h
new file mode 100644
index 0000000..387b352
--- /dev/null
+++ b/include/linux/regulator/hi655x-regulator.h
@@ -0,0 +1,69 @@
+/*
+ * Device driver for regulators in HI655X IC
+ *
+ * Copyright (c) 2015 Hisilicon.
+ *
+ * Fei Wang <w.f@xxxxxxxxxx>
+ *
+ * this regulator's probe function will be called lots of times,,
+ * because of there are lots of regulator nodes in dtb.
+ * so,that's say, the driver must be inited before the regulator nodes
+ * registor to system.
+ *
+ * Makefile have proved my guess, please refor to the makefile.
+ * when the code is rebuild i hope we can build pmu sub_system.
+ * init order can not base on compile
+ */
+
+#ifndef __HISI_HI655X_REGULATOR_H__
+#define __HISI_HI655X_REGULATOR_H__
+
+enum hi655x_regulator_type {
+ PMIC_BUCK_TYPE = 0,
+ PMIC_LDO_TYPE = 1,
+ PMIC_LVS_TYPE = 2,
+ PMIC_BOOST_TYPE = 3,
+ MTCMOS_SC_ON_TYPE = 4,
+ MTCMOS_ACPU_ON_TYPE = 5,
+ SCHARGE_TYPE = 6,
+};
+
+struct hi655x_regulator_ctrl_regs {
+ unsigned int enable_reg;
+ unsigned int disable_reg;
+ unsigned int status_reg;
+};
+
+struct hi655x_regulator_vset_regs {
+ unsigned int vset_reg;
+};
+
+struct hi655x_regulator_ctrl_data {
+ int shift;
+ unsigned int mask;
+};
+
+struct hi655x_regulator_vset_data {
+ int shift;
+ unsigned int mask;
+};
+
+struct hi655x_regulator {
+ int status; /*this property in child node*/
+ unsigned int off_on_delay; /*this property in parent node*/
+ enum hi655x_regulator_type type; /*this property in child node*/
+ int regulator_id;
+
+ /*this property must be unify which is in child node*/
+ struct hi655x_regulator_ctrl_regs ctrl_regs;
+ struct hi655x_regulator_ctrl_data ctrl_data;
+
+ struct hi655x_regulator_vset_regs vset_regs;
+ struct hi655x_regulator_vset_data vset_data;
+ unsigned int vol_numb;
+ unsigned int *vset_table;
+ struct regulator_desc rdesc;
+ int (*dt_parse)(struct hi655x_regulator*, struct platform_device*);
+};
+
+#endif
--
1.7.9.5
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