[PATCH v2 4/4] regulator: tps65917: Add Regulator driver for TPS65917 PMIC

From: Keerthy
Date: Tue May 20 2014 - 05:19:44 EST

This patch adds support for TPS65917 PMIC regulators.

The regulators set consists of 5 SMPSs and 5 LDOs. The output
voltages are configurable and are meant to supply power to the
main processor and other components.

Signed-off-by: Keerthy <j-keerthy@xxxxxx>
---
Comments fixed in V2:

Used the standard functions in helpers.c
Added a NULL entry in of_tps65917_match_tbl table.
Used linear ranges instead of open coded function.

drivers/regulator/Kconfig | 12 +
drivers/regulator/Makefile | 1 +
drivers/regulator/tps65917-regulator.c | 810 ++++++++++++++++++++++++++++++++
3 files changed, 823 insertions(+)
create mode 100644 drivers/regulator/tps65917-regulator.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 903eb37..6455a6e 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -581,6 +581,18 @@ config REGULATOR_TPS65912
help
This driver supports TPS65912 voltage regulator chip.

+config REGULATOR_TPS65917
+ tristate "TI TPS65917 PMIC Regulators"
+ depends on MFD_TPS65917
+ help
+ If you wish to control the regulators on the TPS65917 series of
+ chips say Y here. This will enable support for all the software
+ controllable SMPS/LDO regulators.
+
+ The regulators available on TPS65917 series chips vary depending
+ on the muxing. This is handled automatically in the driver by
+ reading the mux info from OTP.
+
config REGULATOR_TPS80031
tristate "TI TPS80031/TPS80032 power regualtor driver"
depends on MFD_TPS80031
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 12ef277..115ee53 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -76,6 +76,7 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
obj-$(CONFIG_REGULATOR_TPS6586X) += tps6586x-regulator.o
obj-$(CONFIG_REGULATOR_TPS65910) += tps65910-regulator.o
obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o
+obj-$(CONFIG_REGULATOR_TPS65917) += tps65917-regulator.o
obj-$(CONFIG_REGULATOR_TPS80031) += tps80031-regulator.o
obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o
obj-$(CONFIG_REGULATOR_VEXPRESS) += vexpress.o
diff --git a/drivers/regulator/tps65917-regulator.c b/drivers/regulator/tps65917-regulator.c
new file mode 100644
index 0000000..929bd50
--- /dev/null
+++ b/drivers/regulator/tps65917-regulator.c
@@ -0,0 +1,810 @@
+/*
+ * Driver for Regulator part of TPS65917 PMIC
+ *
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License version 2 for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/slab.h>
+#include <linux/regmap.h>
+#include <linux/mfd/tps65917.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/regulator/of_regulator.h>
+
+struct regs_info {
+ char *name;
+ char *sname;
+ u8 vsel_addr;
+ u8 ctrl_addr;
+ int sleep_id;
+};
+
+static const struct regulator_linear_range smps_low_ranges[] = {
+ REGULATOR_LINEAR_RANGE(500000, 0x1, 0x6, 0),
+ REGULATOR_LINEAR_RANGE(510000, 0x7, 0x79, 10000),
+ REGULATOR_LINEAR_RANGE(1650000, 0x7A, 0x7f, 0),
+};
+
+static const struct regulator_linear_range smps_high_ranges[] = {
+ REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x6, 0),
+ REGULATOR_LINEAR_RANGE(1020000, 0x7, 0x79, 20000),
+ REGULATOR_LINEAR_RANGE(3300000, 0x7A, 0x7f, 0),
+};
+
+static const struct regs_info tps65917_regs_info[] = {
+ {
+ .name = "SMPS1",
+ .sname = "smps1-in",
+ .vsel_addr = TPS65917_SMPS1_VOLTAGE,
+ .ctrl_addr = TPS65917_SMPS1_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS1,
+ },
+ {
+ .name = "SMPS2",
+ .sname = "smps2-in",
+ .vsel_addr = TPS65917_SMPS2_VOLTAGE,
+ .ctrl_addr = TPS65917_SMPS2_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS2,
+ },
+ {
+ .name = "SMPS3",
+ .sname = "smps3-in",
+ .vsel_addr = TPS65917_SMPS3_VOLTAGE,
+ .ctrl_addr = TPS65917_SMPS3_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS3,
+ },
+ {
+ .name = "SMPS4",
+ .sname = "smps4-in",
+ .vsel_addr = TPS65917_SMPS4_VOLTAGE,
+ .ctrl_addr = TPS65917_SMPS4_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS4,
+ },
+ {
+ .name = "SMPS5",
+ .sname = "smps5-in",
+ .vsel_addr = TPS65917_SMPS5_VOLTAGE,
+ .ctrl_addr = TPS65917_SMPS5_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_SMPS5,
+ },
+ {
+ .name = "LDO1",
+ .sname = "ldo1-in",
+ .vsel_addr = TPS65917_LDO1_VOLTAGE,
+ .ctrl_addr = TPS65917_LDO1_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO1,
+ },
+ {
+ .name = "LDO2",
+ .sname = "ldo2-in",
+ .vsel_addr = TPS65917_LDO2_VOLTAGE,
+ .ctrl_addr = TPS65917_LDO2_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO2,
+ },
+ {
+ .name = "LDO3",
+ .sname = "ldo3-in",
+ .vsel_addr = TPS65917_LDO3_VOLTAGE,
+ .ctrl_addr = TPS65917_LDO3_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO3,
+ },
+ {
+ .name = "LDO4",
+ .sname = "ldo4-in",
+ .vsel_addr = TPS65917_LDO4_VOLTAGE,
+ .ctrl_addr = TPS65917_LDO4_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO4,
+ },
+ {
+ .name = "LDO5",
+ .sname = "ldo5-in",
+ .vsel_addr = TPS65917_LDO5_VOLTAGE,
+ .ctrl_addr = TPS65917_LDO5_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_LDO5,
+ },
+ {
+ .name = "REGEN1",
+ .ctrl_addr = TPS65917_REGEN1_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_REGEN1,
+ },
+ {
+ .name = "REGEN2",
+ .ctrl_addr = TPS65917_REGEN2_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_REGEN2,
+ },
+ {
+ .name = "REGEN3",
+ .ctrl_addr = TPS65917_REGEN3_CTRL,
+ .sleep_id = TPS65917_EXTERNAL_REQSTR_ID_REGEN3,
+ },
+};
+
+#define SMPS_CTRL_MODE_OFF 0x00
+#define SMPS_CTRL_MODE_ON 0x01
+#define SMPS_CTRL_MODE_ECO 0x02
+#define SMPS_CTRL_MODE_PWM 0x03
+
+#define TPS65917_SMPS_NUM_VOLTAGES 122
+#define TPS65917_LDO_NUM_VOLTAGES 50
+
+#define REGULATOR_SLAVE 0
+
+static int tps65917_smps_read(struct tps65917 *tps65917, unsigned int reg,
+ unsigned int *dest)
+{
+ unsigned int addr;
+
+ addr = TPS65917_BASE_TO_REG(TPS65917_SMPS_BASE, reg);
+
+ return regmap_read(tps65917->regmap[REGULATOR_SLAVE], addr, dest);
+}
+
+static int tps65917_smps_write(struct tps65917 *tps65917, unsigned int reg,
+ unsigned int value)
+{
+ unsigned int addr;
+
+ addr = TPS65917_BASE_TO_REG(TPS65917_SMPS_BASE, reg);
+
+ return regmap_write(tps65917->regmap[REGULATOR_SLAVE], addr, value);
+}
+
+static int tps65917_ldo_read(struct tps65917 *tps65917, unsigned int reg,
+ unsigned int *dest)
+{
+ unsigned int addr;
+
+ addr = TPS65917_BASE_TO_REG(TPS65917_LDO_BASE, reg);
+
+ return regmap_read(tps65917->regmap[REGULATOR_SLAVE], addr, dest);
+}
+
+static int tps65917_ldo_write(struct tps65917 *tps65917, unsigned int reg,
+ unsigned int value)
+{
+ unsigned int addr;
+
+ addr = TPS65917_BASE_TO_REG(TPS65917_LDO_BASE, reg);
+
+ return regmap_write(tps65917->regmap[REGULATOR_SLAVE], addr, value);
+}
+
+static int tps65917_set_mode_smps(struct regulator_dev *dev, unsigned int mode)
+{
+ struct tps65917_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg;
+ bool rail_enable = true;
+
+ tps65917_smps_read(pmic->tps65917, tps65917_regs_info[id].ctrl_addr,
+ &reg);
+ reg &= ~TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK;
+
+ if (reg == SMPS_CTRL_MODE_OFF)
+ rail_enable = false;
+
+ switch (mode) {
+ case REGULATOR_MODE_NORMAL:
+ reg |= SMPS_CTRL_MODE_ON;
+ break;
+ case REGULATOR_MODE_IDLE:
+ reg |= SMPS_CTRL_MODE_ECO;
+ break;
+ case REGULATOR_MODE_FAST:
+ reg |= SMPS_CTRL_MODE_PWM;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ pmic->current_reg_mode[id] = reg & TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK;
+ if (rail_enable)
+ tps65917_smps_write(pmic->tps65917,
+ tps65917_regs_info[id].ctrl_addr, reg);
+ return 0;
+}
+
+static unsigned int tps65917_get_mode_smps(struct regulator_dev *dev)
+{
+ struct tps65917_pmic *pmic = rdev_get_drvdata(dev);
+ int id = rdev_get_id(dev);
+ unsigned int reg;
+
+ reg = pmic->current_reg_mode[id] & TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK;
+
+ switch (reg) {
+ case SMPS_CTRL_MODE_ON:
+ return REGULATOR_MODE_NORMAL;
+ case SMPS_CTRL_MODE_ECO:
+ return REGULATOR_MODE_IDLE;
+ case SMPS_CTRL_MODE_PWM:
+ return REGULATOR_MODE_FAST;
+ }
+
+ return 0;
+}
+
+static struct regulator_ops tps65917_ops_smps = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .set_mode = tps65917_set_mode_smps,
+ .get_mode = tps65917_get_mode_smps,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+};
+
+static struct regulator_ops tps65917_ops_ext_control_smps = {
+ .set_mode = tps65917_set_mode_smps,
+ .get_mode = tps65917_get_mode_smps,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+};
+
+static struct regulator_ops tps65917_ops_ldo = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+};
+
+static struct regulator_ops tps65917_ops_ext_control_ldo = {
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+};
+
+static struct regulator_ops tps65917_ops_extreg = {
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+};
+
+static struct regulator_ops tps65917_ops_ext_control_extreg = {
+};
+
+static int tps65917_regulator_config_external(struct tps65917 *tps65917, int id,
+ struct tps65917_reg_init *reg_init)
+{
+ int sleep_id = tps65917_regs_info[id].sleep_id;
+ int ret;
+
+ ret = tps65917_ext_control_req_config(tps65917, sleep_id,
+ reg_init->roof_floor, true);
+ if (ret < 0)
+ dev_err(tps65917->dev,
+ "Ext control config for regulator %d failed %d\n",
+ id, ret);
+ return ret;
+}
+
+/*
+ * setup the hardware based sleep configuration of the SMPS/LDO regulators
+ * from the platform data. This is different to the software based control
+ * supported by the regulator framework as it is controlled by toggling
+ * pins on the PMIC such as PREQ, SYSEN, ...
+ */
+static int tps65917_smps_init(struct tps65917 *tps65917, int id,
+ struct tps65917_reg_init *reg_init)
+{
+ unsigned int reg;
+ unsigned int addr;
+ int ret;
+
+ addr = tps65917_regs_info[id].ctrl_addr;
+
+ ret = tps65917_smps_read(tps65917, addr, &reg);
+ if (ret)
+ return ret;
+
+ if (reg_init->warm_reset)
+ reg |= TPS65917_SMPS1_CTRL_WR_S;
+ else
+ reg &= ~TPS65917_SMPS1_CTRL_WR_S;
+
+ if (reg_init->roof_floor)
+ reg |= TPS65917_SMPS1_CTRL_ROOF_FLOOR_EN;
+ else
+ reg &= ~TPS65917_SMPS1_CTRL_ROOF_FLOOR_EN;
+
+ reg &= ~TPS65917_SMPS1_CTRL_MODE_SLEEP_MASK;
+ if (reg_init->mode_sleep)
+ reg |= reg_init->mode_sleep <<
+ TPS65917_SMPS1_CTRL_MODE_SLEEP_SHIFT;
+
+
+ ret = tps65917_smps_write(tps65917, addr, reg);
+ if (ret)
+ return ret;
+
+ if (tps65917_regs_info[id].vsel_addr && reg_init->vsel) {
+ addr = tps65917_regs_info[id].vsel_addr;
+
+ reg = reg_init->vsel;
+
+ ret = tps65917_smps_write(tps65917, addr, reg);
+ if (ret)
+ return ret;
+ }
+
+ if (reg_init->roof_floor) {
+ /* Enable externally controlled regulator */
+ addr = tps65917_regs_info[id].ctrl_addr;
+ ret = tps65917_smps_read(tps65917, addr, &reg);
+ if (ret < 0)
+ return ret;
+
+ if (!(reg & TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK)) {
+ reg |= SMPS_CTRL_MODE_ON;
+ ret = tps65917_smps_write(tps65917, addr, reg);
+ if (ret < 0)
+ return ret;
+ }
+ return tps65917_regulator_config_external(tps65917, id,
+ reg_init);
+ }
+ return 0;
+}
+
+static int tps65917_ldo_init(struct tps65917 *tps65917, int id,
+ struct tps65917_reg_init *reg_init)
+{
+ unsigned int reg;
+ unsigned int addr;
+ int ret;
+
+ addr = tps65917_regs_info[id].ctrl_addr;
+
+ ret = tps65917_ldo_read(tps65917, addr, &reg);
+ if (ret)
+ return ret;
+
+ if (reg_init->warm_reset)
+ reg |= TPS65917_LDO1_CTRL_WR_S;
+ else
+ reg &= ~TPS65917_LDO1_CTRL_WR_S;
+
+ if (reg_init->mode_sleep)
+ reg |= TPS65917_LDO1_CTRL_MODE_SLEEP;
+ else
+ reg &= ~TPS65917_LDO1_CTRL_MODE_SLEEP;
+
+ ret = tps65917_ldo_write(tps65917, addr, reg);
+ if (ret)
+ return ret;
+
+ if (reg_init->roof_floor) {
+ /* Enable externally controlled regulator */
+ addr = tps65917_regs_info[id].ctrl_addr;
+ ret = tps65917_update_bits(tps65917, TPS65917_LDO_BASE,
+ addr, TPS65917_LDO1_CTRL_MODE_ACTIVE,
+ TPS65917_LDO1_CTRL_MODE_ACTIVE);
+ if (ret < 0) {
+ dev_err(tps65917->dev,
+ "LDO Register 0x%02x update failed %d\n",
+ addr, ret);
+ return ret;
+ }
+ return tps65917_regulator_config_external(tps65917, id,
+ reg_init);
+ }
+ return 0;
+}
+
+static int tps65917_extreg_init(struct tps65917 *tps65917, int id,
+ struct tps65917_reg_init *reg_init)
+{
+ unsigned int addr;
+ int ret;
+ unsigned int val = 0;
+
+ addr = tps65917_regs_info[id].ctrl_addr;
+
+ if (reg_init->mode_sleep)
+ val = TPS65917_REGEN1_CTRL_MODE_SLEEP;
+
+ ret = tps65917_update_bits(tps65917, TPS65917_RESOURCE_BASE,
+ addr, TPS65917_REGEN1_CTRL_MODE_SLEEP, val);
+ if (ret < 0) {
+ dev_err(tps65917->dev, "Resource reg 0x%02x update failed %d\n",
+ addr, ret);
+ return ret;
+ }
+
+ if (reg_init->roof_floor) {
+ /* Enable externally controlled regulator */
+ addr = tps65917_regs_info[id].ctrl_addr;
+ ret = tps65917_update_bits(tps65917, TPS65917_RESOURCE_BASE,
+ addr, TPS65917_REGEN1_CTRL_MODE_ACTIVE,
+ TPS65917_REGEN1_CTRL_MODE_ACTIVE);
+ if (ret < 0) {
+ dev_err(tps65917->dev,
+ "Resource Register 0x%02x update failed %d\n",
+ addr, ret);
+ return ret;
+ }
+ return tps65917_regulator_config_external(tps65917, id,
+ reg_init);
+ }
+ return 0;
+}
+
+static struct of_regulator_match tps65917_matches[] = {
+ { .name = "smps1", },
+ { .name = "smps2", },
+ { .name = "smps3", },
+ { .name = "smps4", },
+ { .name = "smps5", },
+ { .name = "ldo1", },
+ { .name = "ldo2", },
+ { .name = "ldo3", },
+ { .name = "ldo4", },
+ { .name = "ldo5", },
+ { .name = "regen1", },
+ { .name = "regen2", },
+ { .name = "regen3", },
+ { .name = "sysen1", },
+ { .name = "sysen2", },
+};
+
+static void tps65917_dt_to_pdata(struct device *dev,
+ struct device_node *node,
+ struct tps65917_pmic_platform_data *pdata)
+{
+ struct device_node *regulators;
+ u32 prop;
+ int idx, ret;
+
+ node = of_node_get(node);
+ regulators = of_get_child_by_name(node, "regulators");
+ if (!regulators) {
+ dev_info(dev, "regulator node not found\n");
+ return;
+ }
+
+ ret = of_regulator_match(dev, regulators, tps65917_matches,
+ TPS65917_NUM_REGS);
+ of_node_put(regulators);
+ if (ret < 0) {
+ dev_err(dev, "Error parsing regulator init data: %d\n", ret);
+ return;
+ }
+
+ for (idx = 0; idx < TPS65917_NUM_REGS; idx++) {
+ if (!tps65917_matches[idx].init_data ||
+ !tps65917_matches[idx].of_node)
+ continue;
+
+ pdata->reg_data[idx] = tps65917_matches[idx].init_data;
+
+ pdata->reg_init[idx] = devm_kzalloc(dev,
+ sizeof(struct tps65917_reg_init), GFP_KERNEL);
+
+ pdata->reg_init[idx]->warm_reset =
+ of_property_read_bool(tps65917_matches[idx].of_node,
+ "ti,warm-reset");
+
+ ret = of_property_read_u32(tps65917_matches[idx].of_node,
+ "ti,roof-floor", &prop);
+ /* EINVAL: Property not found */
+ if (ret != -EINVAL) {
+ int econtrol;
+
+ /* use default value, when no value is specified */
+ econtrol = TPS65917_EXT_CONTROL_NSLEEP;
+ if (!ret) {
+ switch (prop) {
+ case 1:
+ econtrol = TPS65917_EXT_CONTROL_ENABLE1;
+ break;
+ case 2:
+ econtrol = TPS65917_EXT_CONTROL_ENABLE2;
+ break;
+ case 3:
+ econtrol = TPS65917_EXT_CONTROL_NSLEEP;
+ break;
+ default:
+ WARN_ON(1);
+ dev_warn(dev,
+ "%s: Invalid roof-floor option: %u\n",
+ tps65917_matches[idx].name, prop);
+ break;
+ }
+ }
+ pdata->reg_init[idx]->roof_floor = econtrol;
+ }
+
+ ret = of_property_read_u32(tps65917_matches[idx].of_node,
+ "ti,mode-sleep", &prop);
+ if (!ret)
+ pdata->reg_init[idx]->mode_sleep = prop;
+
+ ret = of_property_read_bool(tps65917_matches[idx].of_node,
+ "ti,smps-range");
+ if (ret)
+ pdata->reg_init[idx]->vsel =
+ TPS65917_SMPS1_VOLTAGE_RANGE;
+ }
+}
+
+
+static int tps65917_regulators_probe(struct platform_device *pdev)
+{
+ struct tps65917 *tps65917 = dev_get_drvdata(pdev->dev.parent);
+ struct tps65917_pmic_platform_data *pdata;
+ struct device_node *node = pdev->dev.of_node;
+ struct regulator_dev *rdev;
+ struct regulator_config config = { };
+ struct tps65917_pmic *pmic;
+ struct tps65917_reg_init *reg_init;
+ int id = 0, ret;
+ unsigned int addr, reg;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+
+ if (!pdata)
+ return -ENOMEM;
+
+ tps65917_dt_to_pdata(&pdev->dev, node, pdata);
+
+ pmic = devm_kzalloc(&pdev->dev, sizeof(*pmic), GFP_KERNEL);
+ if (!pmic)
+ return -ENOMEM;
+
+ pmic->dev = &pdev->dev;
+ pmic->tps65917 = tps65917;
+ tps65917->pmic = pmic;
+ platform_set_drvdata(pdev, pmic);
+
+ ret = tps65917_smps_read(tps65917, TPS65917_SMPS_CTRL, &reg);
+ if (ret)
+ return ret;
+
+ if (reg & TPS65917_SMPS_CTRL_SMPS1_SMPS12_EN)
+ pmic->smps12 = 1;
+
+ config.regmap = tps65917->regmap[REGULATOR_SLAVE];
+ config.dev = &pdev->dev;
+ config.driver_data = pmic;
+
+ for (id = 0; id < TPS65917_REG_LDO1; id++) {
+ /*
+ * Miss out regulators which are not available due
+ * to slaving configurations.
+ */
+ if ((id == TPS65917_REG_SMPS2) && pmic->smps12)
+ continue;
+
+ /* Initialise sleep/init values from platform data */
+ if (pdata && pdata->reg_init[id]) {
+ reg_init = pdata->reg_init[id];
+ ret = tps65917_smps_init(tps65917, id, reg_init);
+ if (ret)
+ return ret;
+ } else {
+ reg_init = NULL;
+ }
+
+ /* Register the regulators */
+ pmic->desc[id].name = tps65917_regs_info[id].name;
+ pmic->desc[id].id = id;
+
+ /*
+ * Read and store the RANGE bit for later use
+ * This must be done before regulator is probed,
+ * otherwise we error in probe with unsupportable
+ * ranges. Read the current smps mode for later use.
+ */
+ addr = tps65917_regs_info[id].vsel_addr;
+
+ ret = tps65917_smps_read(pmic->tps65917, addr, &reg);
+ if (ret)
+ return ret;
+ if (reg & TPS65917_SMPS1_VOLTAGE_RANGE)
+ pmic->range[id] = 1;
+
+ if (reg_init && reg_init->roof_floor)
+ pmic->desc[id].ops =
+ &tps65917_ops_ext_control_smps;
+ else
+ pmic->desc[id].ops = &tps65917_ops_smps;
+ pmic->desc[id].n_voltages = TPS65917_SMPS_NUM_VOLTAGES;
+ pmic->desc[id].vsel_reg =
+ TPS65917_BASE_TO_REG(TPS65917_SMPS_BASE,
+ tps65917_regs_info[id].vsel_addr);
+ if (pmic->range[id])
+ pmic->desc[id].linear_ranges = smps_high_ranges;
+ else
+ pmic->desc[id].linear_ranges = smps_low_ranges;
+ pmic->desc[id].vsel_mask =
+ TPS65917_SMPS1_VOLTAGE_VSEL_MASK;
+
+ pmic->desc[id].n_linear_ranges = 3;
+ pmic->desc[id].ramp_delay = 2500;
+
+ /* Read the smps mode for later use. */
+ addr = tps65917_regs_info[id].ctrl_addr;
+ ret = tps65917_smps_read(pmic->tps65917, addr, &reg);
+ if (ret)
+ return ret;
+ pmic->current_reg_mode[id] = reg &
+ TPS65917_SMPS1_CTRL_MODE_ACTIVE_MASK;
+
+ pmic->desc[id].type = REGULATOR_VOLTAGE;
+ pmic->desc[id].owner = THIS_MODULE;
+
+ if (pdata)
+ config.init_data = pdata->reg_data[id];
+ else
+ config.init_data = NULL;
+
+ pmic->desc[id].supply_name = tps65917_regs_info[id].sname;
+ config.of_node = tps65917_matches[id].of_node;
+
+ rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev,
+ "failed to register %s regulator\n",
+ pdev->name);
+ return PTR_ERR(rdev);
+ }
+
+ /* Save regulator for cleanup */
+ pmic->rdev[id] = rdev;
+ }
+
+ /* Start this loop from the id left from previous loop */
+ for (; id < TPS65917_NUM_REGS; id++) {
+ if (pdata && pdata->reg_init[id])
+ reg_init = pdata->reg_init[id];
+ else
+ reg_init = NULL;
+
+ /* Miss out regulators which are not available due
+ * to alternate functions.
+ */
+
+ /* Register the regulators */
+ pmic->desc[id].name = tps65917_regs_info[id].name;
+ pmic->desc[id].id = id;
+ pmic->desc[id].type = REGULATOR_VOLTAGE;
+ pmic->desc[id].owner = THIS_MODULE;
+
+ if (id < TPS65917_REG_REGEN1) {
+ pmic->desc[id].n_voltages = TPS65917_LDO_NUM_VOLTAGES;
+ if (reg_init && reg_init->roof_floor)
+ pmic->desc[id].ops =
+ &tps65917_ops_ext_control_ldo;
+ else
+ pmic->desc[id].ops = &tps65917_ops_ldo;
+ pmic->desc[id].min_uV = 900000;
+ pmic->desc[id].uV_step = 50000;
+ pmic->desc[id].linear_min_sel = 1;
+ pmic->desc[id].enable_time = 500;
+ pmic->desc[id].vsel_reg =
+ TPS65917_BASE_TO_REG(TPS65917_LDO_BASE,
+ tps65917_regs_info[id].vsel_addr);
+ pmic->desc[id].vsel_mask =
+ TPS65917_LDO1_VOLTAGE_VSEL_MASK;
+ pmic->desc[id].enable_reg =
+ TPS65917_BASE_TO_REG(TPS65917_LDO_BASE,
+ tps65917_regs_info[id].ctrl_addr);
+ pmic->desc[id].enable_mask =
+ TPS65917_LDO1_CTRL_MODE_ACTIVE;
+ /*
+ * To be confirmed. Discussion on going with PMIC Team.
+ * It is of the order of ~60mV/uS.
+ */
+ pmic->desc[id].ramp_delay = 2500;
+ } else {
+ pmic->desc[id].n_voltages = 1;
+ if (reg_init && reg_init->roof_floor)
+ pmic->desc[id].ops =
+ &tps65917_ops_ext_control_extreg;
+ else
+ pmic->desc[id].ops = &tps65917_ops_extreg;
+ pmic->desc[id].enable_reg =
+ TPS65917_BASE_TO_REG(TPS65917_RESOURCE_BASE,
+ tps65917_regs_info[id].ctrl_addr);
+ pmic->desc[id].enable_mask =
+ TPS65917_REGEN1_CTRL_MODE_ACTIVE;
+ }
+
+ if (pdata)
+ config.init_data = pdata->reg_data[id];
+ else
+ config.init_data = NULL;
+
+ pmic->desc[id].supply_name = tps65917_regs_info[id].sname;
+ config.of_node = tps65917_matches[id].of_node;
+
+ rdev = devm_regulator_register(&pdev->dev, &pmic->desc[id],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev,
+ "failed to register %s regulator\n",
+ pdev->name);
+ return PTR_ERR(rdev);
+ }
+
+ /* Save regulator for cleanup */
+ pmic->rdev[id] = rdev;
+
+ /* Initialise sleep/init values from platform data */
+ if (pdata) {
+ reg_init = pdata->reg_init[id];
+ if (reg_init) {
+ if (id < TPS65917_REG_REGEN1)
+ ret = tps65917_ldo_init(tps65917,
+ id, reg_init);
+ else
+ ret = tps65917_extreg_init(tps65917,
+ id, reg_init);
+ if (ret)
+ return ret;
+ }
+ }
+ }
+
+
+ return 0;
+}
+
+static struct of_device_id of_tps65917_match_tbl[] = {
+ { .compatible = "ti,tps65917-pmic", },
+ { }
+};
+
+static struct platform_driver tps65917_driver = {
+ .driver = {
+ .name = "tps65917-pmic",
+ .of_match_table = of_tps65917_match_tbl,
+ .owner = THIS_MODULE,
+ },
+ .probe = tps65917_regulators_probe,
+};
+
+static int __init tps65917_init(void)
+{
+ return platform_driver_register(&tps65917_driver);
+}
+subsys_initcall(tps65917_init);
+
+static void __exit tps65917_exit(void)
+{
+ platform_driver_unregister(&tps65917_driver);
+}
+module_exit(tps65917_exit);
+
+MODULE_AUTHOR("J Keerthy <j-keerthy@xxxxxx>");
+MODULE_DESCRIPTION("TPS65917 voltage regulator driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:tps65917-pmic");
+MODULE_DEVICE_TABLE(of, of_tps65917_match_tbl);
--
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/