* [PATCH] mfd: lp873x: Add lp873x PMIC support
2016-05-05 5:10 [PATCH 0/3] mfd: lp873x: Add lp873x PMIC support Keerthy
2016-05-05 5:10 ` [PATCH 1/3] Documentation: mfd/regulator: LP873X: Add information for the mfd and regulator drivers Keerthy
@ 2016-05-05 5:10 ` Keerthy
2016-05-05 8:35 ` Manish Badarkhe
2016-05-05 5:10 ` [PATCH 3/3] regulator: lp873x: Add support for lp873x PMIC regulators Keerthy
2 siblings, 1 reply; 10+ messages in thread
From: Keerthy @ 2016-05-05 5:10 UTC (permalink / raw)
To: broonie, lgirdwood, lee.jones
Cc: linux-kernel, linux-omap, devicetree, robh+dt, mark.rutland,
j-keerthy
The LP873X chip is a power management IC for Portable Navigation Systems
and Tablet Computing devices. It contains the following components:
- Regulators.
- Configurable General Purpose Output Signals(GPO).
PMIC interacts with the main processor through i2c. PMIC has
couple of LDOs(Linear Regulators), couple of BUCKs (Step-Down DC-DC
Converter Cores) and GPOs(General Purpose Output Signals). At this
time only the regulator functionality is made available.
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
drivers/mfd/Kconfig | 15 +++
drivers/mfd/Makefile | 2 +
drivers/mfd/lp873x.c | 94 ++++++++++++++++
include/linux/mfd/lp873x.h | 265 +++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 376 insertions(+)
create mode 100644 drivers/mfd/lp873x.c
create mode 100644 include/linux/mfd/lp873x.h
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index eea61e3..1d85f10 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1185,6 +1185,21 @@ config MFD_TPS65217
This driver can also be built as a module. If so, the module
will be called tps65217.
+config MFD_LP873X
+ tristate "TI LP873X Power Management IC"
+ depends on I2C
+ select MFD_CORE
+ select REGMAP_I2C
+ help
+ If you say yes here you get support for the LP873X series of
+ Power Management Integrated Circuits.
+ These include voltage regulators, Thermal protection, Configurable
+ general pirpose outputs and other features that are often used in
+ portable devices.
+
+ This driver can also be built as a module. If so, the module
+ will be called lp873x.
+
config MFD_TPS65218
tristate "TI TPS65218 Power Management chips"
depends on I2C
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 5eaa6465d..617c688 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -22,6 +22,8 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o
+obj-$(CONFIG_MFD_LP873X) += lp873x.o
+
obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o
obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o
diff --git a/drivers/mfd/lp873x.c b/drivers/mfd/lp873x.c
new file mode 100644
index 0000000..4b9243d
--- /dev/null
+++ b/drivers/mfd/lp873x.c
@@ -0,0 +1,94 @@
+/*
+ * LP873X chip family multi-function driver
+ *
+ * Copyright (C) 2016 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 as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+#include <linux/regmap.h>
+#include <linux/of_device.h>
+#include <linux/mfd/lp873x.h>
+
+static const struct regmap_config lp873x_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = LP873X_REG_MAX,
+};
+
+static const struct of_device_id of_lp873x_match_table[] = {
+ { .compatible = "ti,lp873x", },
+ { .compatible = "ti,lp8733", },
+ { .compatible = "ti,lp8732", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, of_lp873x_match_table);
+
+static const struct i2c_device_id lp873x_id_table[] = {
+ { "lp873x", LP873X },
+ { "lp8732", LP873X },
+ { "lp8733", LP873X },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
+
+static int lp873x_probe(struct i2c_client *client,
+ const struct i2c_device_id *ids)
+{
+ struct lp873x *lp873;
+ int ret;
+ unsigned int otpid;
+
+ lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL);
+ if (!lp873)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, lp873);
+ lp873->dev = &client->dev;
+ lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config);
+ if (IS_ERR(lp873->regmap)) {
+ ret = PTR_ERR(lp873->regmap);
+ dev_err(lp873->dev, "Failed to initialize register map: %d\n",
+ ret);
+ return ret;
+ }
+
+ mutex_init(&lp873->lp873_lock);
+
+ ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
+
+ if (ret) {
+ dev_err(lp873->dev, "Failed to read otpid\n");
+ return ret;
+ }
+
+ lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
+
+ ret = of_platform_populate(client->dev.of_node, NULL, NULL,
+ &client->dev);
+
+ return ret;
+}
+
+static struct i2c_driver lp873x_driver = {
+ .driver = {
+ .name = "lp873x",
+ .of_match_table = of_lp873x_match_table,
+ },
+ .probe = lp873x_probe,
+ .id_table = lp873x_id_table,
+};
+module_i2c_driver(lp873x_driver);
+
+MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
+MODULE_DESCRIPTION("LP873X chip family multi-function driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/lp873x.h b/include/linux/mfd/lp873x.h
new file mode 100644
index 0000000..41ae085
--- /dev/null
+++ b/include/linux/mfd/lp873x.h
@@ -0,0 +1,265 @@
+/*
+ * Functions to access LP873X power management chip.
+ *
+ * Copyright (C) 2016 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 as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __LINUX_MFD_LP873X_H
+#define __LINUX_MFD_LP873X_H
+
+#include <linux/i2c.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+
+/* LP873x chip id list */
+#define LP873X 0x00
+
+/* All register addresses */
+#define LP873X_REG_DEV_REV 0X00
+#define LP873X_REG_OTP_REV 0X01
+#define LP873X_REG_BUCK0_CTRL_1 0X02
+#define LP873X_REG_BUCK0_CTRL_2 0X03
+#define LP873X_REG_BUCK1_CTRL_1 0X04
+#define LP873X_REG_BUCK1_CTRL_2 0X05
+#define LP873X_REG_BUCK0_VOUT 0X06
+#define LP873X_REG_BUCK1_VOUT 0X07
+#define LP873X_REG_LDO0_CTRL 0X08
+#define LP873X_REG_LDO1_CTRL 0X09
+#define LP873X_REG_LDO0_VOUT 0X0A
+#define LP873X_REG_LDO1_VOUT 0X0B
+#define LP873X_REG_BUCK0_DELAY 0X0C
+#define LP873X_REG_BUCK1_DELAY 0X0D
+#define LP873X_REG_LDO0_DELAY 0X0E
+#define LP873X_REG_LDO1_DELAY 0X0F
+#define LP873X_REG_GPO_DELAY 0X10
+#define LP873X_REG_GPO2_DELAY 0X11
+#define LP873X_REG_GPO_CTRL 0X12
+#define LP873X_REG_CONFIG 0X13
+#define LP873X_REG_PLL_CTRL 0X14
+#define LP873X_REG_PGOOD_CTRL1 0X15
+#define LP873X_REG_PGOOD_CTRL2 0X16
+#define LP873X_REG_PG_FAULT 0X17
+#define LP873X_REG_RESET 0X18
+#define LP873X_REG_INT_TOP_1 0X19
+#define LP873X_REG_INT_TOP_2 0X1A
+#define LP873X_REG_INT_BUCK 0X1B
+#define LP873X_REG_INT_LDO 0X1C
+#define LP873X_REG_TOP_STAT 0X1D
+#define LP873X_REG_BUCK_STAT 0X1E
+#define LP873X_REG_LDO_STAT 0x1F
+#define LP873X_REG_TOP_MASK_1 0x20
+#define LP873X_REG_TOP_MASK_2 0x21
+#define LP873X_REG_BUCK_MASK 0x22
+#define LP873X_REG_LDO_MASK 0x23
+#define LP873X_REG_SEL_I_LOAD 0x24
+#define LP873X_REG_I_LOAD_2 0x25
+#define LP873X_REG_I_LOAD_1 0x26
+
+#define LP873X_REG_MAX LP873X_REG_I_LOAD_1
+
+/* Register field definitions */
+#define LP873X_DEV_REV_DEV_ID 0xC0
+#define LP873X_DEV_REV_ALL_LAYER 0x30
+#define LP873X_DEV_REV_METAL_LAYER 0x0F
+
+#define LP873X_OTP_REV_OTP_ID 0xFF
+
+#define LP873X_BUCK0_CTRL_1_BUCK0_FPWM BIT(3)
+#define LP873X_BUCK0_CTRL_1_BUCK0_RDIS_EN BIT(2)
+#define LP873X_BUCK0_CTRL_1_BUCK0_EN_PIN_CTRL BIT(1)
+#define LP873X_BUCK0_CTRL_1_BUCK0_EN BIT(0)
+
+#define LP873X_BUCK0_CTRL_2_BUCK0_ILIM 0x38
+#define LP873X_BUCK0_CTRL_2_BUCK0_SLEW_RATE 0x07
+
+#define LP873X_BUCK1_CTRL_1_BUCK1_FPWM BIT(3)
+#define LP873X_BUCK1_CTRL_1_BUCK1_RDIS_EN BIT(2)
+#define LP873X_BUCK1_CTRL_1_BUCK1_EN_PIN_CTRL BIT(1)
+#define LP873X_BUCK1_CTRL_1_BUCK1_EN BIT(0)
+
+#define LP873X_BUCK1_CTRL_2_BUCK1_ILIM 0x38
+#define LP873X_BUCK1_CTRL_2_BUCK1_SLEW_RATE 0x07
+
+#define LP873X_BUCK0_VOUT_BUCK0_VSET 0xFF
+
+#define LP873X_BUCK1_VOUT_BUCK1_VSET 0xFF
+
+#define LP873X_LDO0_CTRL_LDO0_RDIS_EN BIT(2)
+#define LP873X_LDO0_CTRL_LDO0_EN_PIN_CTRL BIT(1)
+#define LP873X_LDO0_CTRL_LDO0_EN BIT(0)
+
+#define LP873X_LDO1_CTRL_LDO1_RDIS_EN BIT(2)
+#define LP873X_LDO1_CTRL_LDO1_EN_PIN_CTRL BIT(1)
+#define LP873X_LDO1_CTRL_LDO1_EN BIT(0)
+
+#define LP873X_LDO0_VOUT_LDO0_VSET 0x1F
+
+#define LP873X_LDO1_VOUT_LDO1_VSET 0x1F
+
+#define LP873X_BUCK0_DELAY_BUCK0_SD_DELAY 0xF0
+#define LP873X_BUCK0_DELAY_BUCK0_SU_DELAY 0x0F
+
+#define LP873X_BUCK1_DELAY_BUCK1_SD_DELAY 0xF0
+#define LP873X_BUCK1_DELAY_BUCK1_SU_DELAY 0x0F
+
+#define LP873X_LDO0_DELAY_LDO0_SD_DELAY 0xF0
+#define LP873X_LDO0_DELAY_LDO0_SU_DELAY 0x0F
+
+#define LP873X_LDO1_DELAY_LDO1_SD_DELAY 0xF0
+#define LP873X_LDO1_DELAY_LDO1_SU_DELAY 0x0F
+
+#define LP873X_GPO_DELAY_GPO_SD_DELAY 0xF0
+#define LP873X_GPO_DELAY_GPO_SU_DELAY 0x0F
+
+#define LP873X_GPO2_DELAY_GPO2_SD_DELAY 0xF0
+#define LP873X_GPO2_DELAY_GPO2_SU_DELAY 0x0F
+
+#define LP873X_GPO_CTRL_GPO2_OD BIT(6)
+#define LP873X_GPO_CTRL_GPO2_EN_PIN_CTRL BIT(5)
+#define LP873X_GPO_CTRL_GPO2_EN BIT(4)
+#define LP873X_GPO_CTRL_GPO_OD BIT(2)
+#define LP873X_GPO_CTRL_GPO_EN_PIN_CTRL BIT(1)
+#define LP873X_GPO_CTRL_GPO_EN BIT(0)
+
+#define LP873X_CONFIG_SU_DELAY_SEL BIT(6)
+#define LP873X_CONFIG_SD_DELAY_SEL BIT(5)
+#define LP873X_CONFIG_CLKIN_PIN_SEL BIT(4)
+#define LP873X_CONFIG_CLKIN_PD BIT(3)
+#define LP873X_CONFIG_EN_PD BIT(2)
+#define LP873X_CONFIG_TDIE_WARN_LEVEL BIT(1)
+#define LP873X_EN_SPREAD_SPEC BIT(0)
+
+#define LP873X_PLL_CTRL_EN_PLL BIT(6)
+#define LP873X_EXT_CLK_FREQ 0x1F
+
+#define LP873X_PGOOD_CTRL1_PGOOD_POL BIT(7)
+#define LP873X_PGOOD_CTRL1_PGOOD_OD BIT(6)
+#define LP873X_PGOOD_CTRL1_PGOOD_WINDOW_LDO BIT(5)
+#define LP873X_PGOOD_CTRL1_PGOOD_WINDOWN_BUCK BIT(4)
+#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO1 BIT(3)
+#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_LDO0 BIT(2)
+#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK1 BIT(1)
+#define LP873X_PGOOD_CTRL1_PGOOD_EN_PGOOD_BUCK0 BIT(0)
+
+#define LP873X_PGOOD_CTRL2_EN_PGOOD_TWARN BIT(2)
+#define LP873X_PGOOD_CTRL2_EN_PG_FAULT_GATE BIT(1)
+#define LP873X_PGOOD_CTRL2_PGOOD_MODE BIT(0)
+
+#define LP873X_PG_FAULT_PG_FAULT_LDO1 BIT(3)
+#define LP873X_PG_FAULT_PG_FAULT_LDO0 BIT(2)
+#define LP873X_PG_FAULT_PG_FAULT_BUCK1 BIT(1)
+#define LP873X_PG_FAULT_PG_FAULT_BUCK0 BIT(0)
+
+#define LP873X_RESET_SW_RESET BIT(0)
+
+#define LP873X_INT_TOP_1_PGOOD_INT BIT(7)
+#define LP873X_INT_TOP_1_LDO_INT BIT(6)
+#define LP873X_INT_TOP_1_BUCK_INT BIT(5)
+#define LP873X_INT_TOP_1_SYNC_CLK_INT BIT(4)
+#define LP873X_INT_TOP_1_TDIE_SD_INT BIT(3)
+#define LP873X_INT_TOP_1_TDIE_WARN_INT BIT(2)
+#define LP873X_INT_TOP_1_OVP_INT BIT(1)
+#define LP873X_INT_TOP_1_I_MEAS_INT BIT(0)
+
+#define LP873X_INT_TOP_2_RESET_REG_INT BIT(0)
+
+#define LP873X_INT_BUCK_BUCK1_PG_INT BIT(6)
+#define LP873X_INT_BUCK_BUCK1_SC_INT BIT(5)
+#define LP873X_INT_BUCK_BUCK1_ILIM_INT BIT(4)
+#define LP873X_INT_BUCK_BUCK0_PG_INT BIT(2)
+#define LP873X_INT_BUCK_BUCK0_SC_INT BIT(1)
+#define LP873X_INT_BUCK_BUCK0_ILIM_INT BIT(0)
+
+#define LP873X_INT_LDO_LDO1_PG_INT BIT(6)
+#define LP873X_INT_LDO_LDO1_SC_INT BIT(5)
+#define LP873X_INT_LDO_LDO1_ILIM_INT BIT(4)
+#define LP873X_INT_LDO_LDO0_PG_INT BIT(2)
+#define LP873X_INT_LDO_LDO0_SC_INT BIT(1)
+#define LP873X_INT_LDO_LDO0_ILIM_INT BIT(0)
+
+#define LP873X_TOP_STAT_PGOOD_STAT BIT(7)
+#define LP873X_TOP_STAT_SYNC_CLK_STAT BIT(4)
+#define LP873X_TOP_STAT_TDIE_SD_STAT BIT(3)
+#define LP873X_TOP_STAT_TDIE_WARN_STAT BIT(2)
+#define LP873X_TOP_STAT_OVP_STAT BIT(1)
+
+#define LP873X_BUCK_STAT_BUCK1_STAT BIT(7)
+#define LP873X_BUCK_STAT_BUCK1_PG_STAT BIT(6)
+#define LP873X_BUCK_STAT_BUCK1_ILIM_STAT BIT(4)
+#define LP873X_BUCK_STAT_BUCK0_STAT BIT(3)
+#define LP873X_BUCK_STAT_BUCK0_PG_STAT BIT(2)
+#define LP873X_BUCK_STAT_BUCK0_ILIM_STAT BIT(0)
+
+#define LP873X_LDO_STAT_LDO1_STAT BIT(7)
+#define LP873X_LDO_STAT_LDO1_PG_STAT BIT(6)
+#define LP873X_LDO_STAT_LDO1_ILIM_STAT BIT(4)
+#define LP873X_LDO_STAT_LDO0_STAT BIT(3)
+#define LP873X_LDO_STAT_LDO0_PG_STAT BIT(2)
+#define LP873X_LDO_STAT_LDO0_ILIM_STAT BIT(0)
+
+#define LP873X_TOP_MASK_1_PGOOD_INT_MASK BIT(7)
+#define LP873X_TOP_MASK_1_SYNC_CLK_MASK BIT(4)
+#define LP873X_TOP_MASK_1_TDIE_WARN_MASK BIT(2)
+#define LP873X_TOP_MASK_1_I_MEAS_MASK BIT(0)
+
+#define LP873X_TOP_MASK_2_RESET_REG_MASK BIT(0)
+
+#define LP873X_BUCK_MASK_BUCK1_PGF_MASK BIT(7)
+#define LP873X_BUCK_MASK_BUCK1_PGR_MASK BIT(6)
+#define LP873X_BUCK_MASK_BUCK1_ILIM_MASK BIT(4)
+#define LP873X_BUCK_MASK_BUCK0_PGF_MASK BIT(3)
+#define LP873X_BUCK_MASK_BUCK0_PGR_MASK BIT(2)
+#define LP873X_BUCK_MASK_BUCK0_ILIM_MASK BIT(0)
+
+#define LP873X_LDO_MASK_LDO1_PGF_MASK BIT(7)
+#define LP873X_LDO_MASK_LDO1_PGR_MASK BIT(6)
+#define LP873X_LDO_MASK_LDO1_ILIM_MASK BIT(4)
+#define LP873X_LDO_MASK_LDO0_PGF_MASK BIT(3)
+#define LP873X_LDO_MASK_LDO0_PGR_MASK BIT(2)
+#define LP873X_LDO_MASK_LDO0_ILIM_MASK BIT(0)
+
+#define LP873X_SEL_I_LOAD_CURRENT_BUCK_SELECT BIT(0)
+
+#define LP873X_I_LOAD_2_BUCK_LOAD_CURRENT BIT(0)
+
+#define LP873X_I_LOAD_1_BUCK_LOAD_CURRENT 0xFF
+
+#define LP873X_MAX_REG_ID LP873X_LDO_1
+
+/* Number of step-down converters available */
+#define LP873X_NUM_BUCK 2
+/* Number of LDO voltage regulators available */
+#define LP873X_NUM_LDO 2
+/* Number of total regulators available */
+#define LP873X_NUM_REGULATOR (LP873X_NUM_BUCK + LP873X_NUM_LDO)
+
+enum lp873x_regulator_id {
+ /* BUCK's */
+ LP873X_BUCK_0,
+ LP873X_BUCK_1,
+ /* LDOs */
+ LP873X_LDO_0,
+ LP873X_LDO_1,
+};
+
+/**
+ * struct tps65086 - state holder for the tps65086 driver
+ * Device data may be used to access the LP873X chip
+ */
+struct lp873x {
+ struct device *dev;
+ unsigned long id;
+ u8 rev;
+ struct mutex lp873_lock; /* lock guarding the data structure */
+ struct regmap *regmap;
+};
+#endif /* __LINUX_MFD_LP873X_H */
--
1.9.1
^ permalink raw reply related [flat|nested] 10+ messages in thread* [PATCH 3/3] regulator: lp873x: Add support for lp873x PMIC regulators
2016-05-05 5:10 [PATCH 0/3] mfd: lp873x: Add lp873x PMIC support Keerthy
2016-05-05 5:10 ` [PATCH 1/3] Documentation: mfd/regulator: LP873X: Add information for the mfd and regulator drivers Keerthy
2016-05-05 5:10 ` [PATCH] mfd: lp873x: Add lp873x PMIC support Keerthy
@ 2016-05-05 5:10 ` Keerthy
2016-05-05 15:38 ` Mark Brown
2 siblings, 1 reply; 10+ messages in thread
From: Keerthy @ 2016-05-05 5:10 UTC (permalink / raw)
To: broonie, lgirdwood, lee.jones
Cc: linux-kernel, linux-omap, devicetree, robh+dt, mark.rutland,
j-keerthy
The regulators set consists of 2 BUCKs and 2 LDOs. The output
voltages are configurable and are meant to supply power to the
main processor and other components. The ramp delay is configurable
for both BUCKs.
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
drivers/regulator/Kconfig | 9 ++
drivers/regulator/Makefile | 1 +
drivers/regulator/lp873x-regulator.c | 242 +++++++++++++++++++++++++++++++++++
3 files changed, 252 insertions(+)
create mode 100644 drivers/regulator/lp873x-regulator.c
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index c77dc08..4d2d737 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -321,6 +321,15 @@ config REGULATOR_LP872X
help
This driver supports LP8720/LP8725 PMIC
+config REGULATOR_LP873X
+ tristate "TI LP873X Power regulators"
+ depends on MFD_LP873X && OF
+ help
+ This driver supports LP873X voltage regulator chips. LP873X
+ provides two step-down converters and two general-purpose LDO
+ voltage regulators. It supports software based voltage control
+ for different voltage domains
+
config REGULATOR_LP8755
tristate "TI LP8755 High Performance PMU driver"
depends on I2C
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 61bfbb9..7182b5f 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -42,6 +42,7 @@ obj-$(CONFIG_REGULATOR_LM363X) += lm363x-regulator.o
obj-$(CONFIG_REGULATOR_LP3971) += lp3971.o
obj-$(CONFIG_REGULATOR_LP3972) += lp3972.o
obj-$(CONFIG_REGULATOR_LP872X) += lp872x.o
+obj-$(CONFIG_REGULATOR_LP873X) += lp873x-regulator.o
obj-$(CONFIG_REGULATOR_LP8788) += lp8788-buck.o
obj-$(CONFIG_REGULATOR_LP8788) += lp8788-ldo.o
obj-$(CONFIG_REGULATOR_LP8755) += lp8755.o
diff --git a/drivers/regulator/lp873x-regulator.c b/drivers/regulator/lp873x-regulator.c
new file mode 100644
index 0000000..607eb13
--- /dev/null
+++ b/drivers/regulator/lp873x-regulator.c
@@ -0,0 +1,242 @@
+/*
+ * Regulator driver for LP873X PMIC
+ *
+ * Copyright (C) 2016 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/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <linux/mfd/lp873x.h>
+
+#define LP873X_REGULATOR(_name, _id, _of, _ops, _n, _vr, _vm, _er, _em, \
+ _delay, _lr, _nlr, _cr) \
+ [_id] = { \
+ .desc = { \
+ .name = _name, \
+ .id = _id, \
+ .of_match = of_match_ptr(_of), \
+ .regulators_node = of_match_ptr("regulators"),\
+ .ops = &_ops, \
+ .n_voltages = _n, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .vsel_reg = _vr, \
+ .vsel_mask = _vm, \
+ .enable_reg = _er, \
+ .enable_mask = _em, \
+ .ramp_delay = _delay, \
+ .linear_ranges = _lr, \
+ .n_linear_ranges = _nlr, \
+ }, \
+ .ctrl2_reg = _cr, \
+ }
+
+struct lp873x_regulator {
+ struct regulator_desc desc;
+ unsigned int ctrl2_reg;
+};
+
+static const struct lp873x_regulator regulators[];
+
+static const struct regulator_linear_range buck0_buck1_ranges[] = {
+ REGULATOR_LINEAR_RANGE(0, 0x0, 0x13, 0),
+ REGULATOR_LINEAR_RANGE(700000, 0x14, 0x17, 10000),
+ REGULATOR_LINEAR_RANGE(735000, 0x18, 0x9d, 5000),
+ REGULATOR_LINEAR_RANGE(1420000, 0x9e, 0xff, 20000),
+};
+
+static const struct regulator_linear_range ldo0_ldo1_ranges[] = {
+ REGULATOR_LINEAR_RANGE(800000, 0x0, 0x19, 100000),
+};
+
+static unsigned int lp873x_buck_ramp_delay[] = {
+ 30000, 15000, 10000, 7500, 3800, 1900, 940, 470
+};
+
+/* LP873X BUCK current limit */
+static const unsigned int lp873x_buck_uA[] = {
+ 1500000, 2000000, 2500000, 3000000, 3500000, 4000000,
+};
+
+static int lp873x_buck_set_ramp_delay(struct regulator_dev *rdev,
+ int ramp_delay)
+{
+ int id = rdev_get_id(rdev);
+ struct lp873x *lp873 = rdev_get_drvdata(rdev);
+ unsigned int reg;
+ int ret;
+
+ if (ramp_delay <= 470)
+ reg = 7;
+ else if (ramp_delay <= 940)
+ reg = 6;
+ else if (ramp_delay <= 1900)
+ reg = 5;
+ else if (ramp_delay <= 3800)
+ reg = 4;
+ else if (ramp_delay <= 7500)
+ reg = 3;
+ else if (ramp_delay <= 10000)
+ reg = 2;
+ else if (ramp_delay <= 15000)
+ reg = 1;
+ else
+ reg = 0;
+
+ ret = regmap_update_bits(lp873->regmap, regulators[id].ctrl2_reg,
+ LP873X_BUCK0_CTRL_2_BUCK0_SLEW_RATE,
+ reg << __ffs(LP873X_BUCK0_CTRL_2_BUCK0_SLEW_RATE));
+ if (ret) {
+ dev_err(lp873->dev, "SLEW RATE write failed: %d\n", ret);
+ return ret;
+ }
+
+ rdev->constraints->ramp_delay = lp873x_buck_ramp_delay[reg];
+
+ return 0;
+}
+
+static int lp873x_buck_set_current_limit(struct regulator_dev *rdev,
+ int min_uA, int max_uA)
+{
+ int id = rdev_get_id(rdev);
+ struct lp873x *lp873 = rdev_get_drvdata(rdev);
+ int i;
+
+ for (i = ARRAY_SIZE(lp873x_buck_uA) - 1; i >= 0; i--) {
+ if (lp873x_buck_uA[i] >= min_uA &&
+ lp873x_buck_uA[i] <= max_uA)
+ return regmap_update_bits(lp873->regmap,
+ regulators[id].ctrl2_reg,
+ LP873X_BUCK0_CTRL_2_BUCK0_ILIM,
+ i << __ffs(LP873X_BUCK0_CTRL_2_BUCK0_ILIM));
+ }
+
+ return -EINVAL;
+}
+
+static int lp873x_buck_get_current_limit(struct regulator_dev *rdev)
+{
+ int id = rdev_get_id(rdev);
+ struct lp873x *lp873 = rdev_get_drvdata(rdev);
+ int ret;
+ unsigned int val;
+
+ ret = regmap_read(lp873->regmap, regulators[id].ctrl2_reg, &val);
+ if (ret)
+ return ret;
+
+ val = (val & LP873X_BUCK0_CTRL_2_BUCK0_ILIM) >>
+ __ffs(LP873X_BUCK0_CTRL_2_BUCK0_ILIM);
+
+ return (val < ARRAY_SIZE(lp873x_buck_uA)) ?
+ lp873x_buck_uA[val] : -EINVAL;
+}
+
+/* Operations permitted on BUCK0, BUCK1 */
+static struct regulator_ops lp873x_buck01_ops = {
+ .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_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .set_ramp_delay = lp873x_buck_set_ramp_delay,
+ .set_current_limit = lp873x_buck_set_current_limit,
+ .get_current_limit = lp873x_buck_get_current_limit,
+};
+
+/* Operations permitted on LDO0 and LDO1 */
+static struct regulator_ops lp873x_ldo01_ops = {
+ .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_range,
+ .map_voltage = regulator_map_voltage_linear_range,
+};
+
+static const struct lp873x_regulator regulators[] = {
+ LP873X_REGULATOR("BUCK0", LP873X_BUCK_0, "buck0", lp873x_buck01_ops,
+ 256, LP873X_REG_BUCK0_VOUT,
+ LP873X_BUCK0_VOUT_BUCK0_VSET, LP873X_REG_BUCK0_CTRL_1,
+ LP873X_BUCK0_CTRL_1_BUCK0_EN, 10000,
+ buck0_buck1_ranges, 4, LP873X_REG_BUCK0_CTRL_2),
+ LP873X_REGULATOR("BUCK1", LP873X_BUCK_1, "buck1", lp873x_buck01_ops,
+ 256, LP873X_REG_BUCK1_VOUT,
+ LP873X_BUCK1_VOUT_BUCK1_VSET, LP873X_REG_BUCK1_CTRL_1,
+ LP873X_BUCK1_CTRL_1_BUCK1_EN, 10000,
+ buck0_buck1_ranges, 4, LP873X_REG_BUCK1_CTRL_2),
+ LP873X_REGULATOR("LDO0", LP873X_LDO_0, "ldo0", lp873x_ldo01_ops, 26,
+ LP873X_REG_LDO0_VOUT, LP873X_LDO0_VOUT_LDO0_VSET,
+ LP873X_REG_LDO0_CTRL,
+ LP873X_LDO0_CTRL_LDO0_EN, 0, ldo0_ldo1_ranges, 1,
+ 0xFF),
+ LP873X_REGULATOR("LDO1", LP873X_LDO_1, "ldo1", lp873x_ldo01_ops, 26,
+ LP873X_REG_LDO1_VOUT, LP873X_LDO1_VOUT_LDO1_VSET,
+ LP873X_REG_LDO1_CTRL,
+ LP873X_LDO1_CTRL_LDO1_EN, 0, ldo0_ldo1_ranges, 1,
+ 0xFF),
+};
+
+static int lp873x_regulator_probe(struct platform_device *pdev)
+{
+ struct lp873x *lp873 = dev_get_drvdata(pdev->dev.parent);
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+ int i;
+
+ platform_set_drvdata(pdev, lp873);
+
+ config.dev = &pdev->dev;
+ config.dev->of_node = lp873->dev->of_node;
+ config.driver_data = lp873;
+ config.regmap = lp873->regmap;
+
+ for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+ rdev = devm_regulator_register(&pdev->dev, ®ulators[i].desc,
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(lp873->dev, "failed to register %s regulator\n",
+ pdev->name);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct of_device_id of_lp873x_match_tbl[] = {
+ { .compatible = "ti,lp8733-regulators",},
+ { .compatible = "ti,lp8732-regulators",},
+ { .compatible = "ti,lp873x-regulators",},
+ {},
+};
+
+static struct platform_driver lp873x_regulator_driver = {
+ .driver = {
+ .name = "lp873x-pmic",
+ .of_match_table = of_match_ptr(of_lp873x_match_tbl),
+ },
+ .probe = lp873x_regulator_probe,
+};
+module_platform_driver(lp873x_regulator_driver);
+
+MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
+MODULE_DESCRIPTION("LP873X voltage regulator driver");
+MODULE_ALIAS("platform:lp873x-pmic");
+MODULE_LICENSE("GPL v2");
--
1.9.1
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