* [PATCH v8 1/3] mfd: lp873x: Add lp873x PMIC support
2016-08-12 4:58 [PATCH v8 0/3] mfd: lp873x: Add lp873x PMIC support Keerthy
@ 2016-08-12 4:58 ` Keerthy
2016-08-31 7:56 ` Lee Jones
2016-08-12 4:58 ` [PATCH v8 2/3] gpio: lp873x: Add support for General Purpose Outputs Keerthy
2016-08-12 4:58 ` [PATCH v8 3/3] regulator: lp873x: Change the MFD config option as per latest naming Keerthy
2 siblings, 1 reply; 7+ messages in thread
From: Keerthy @ 2016-08-12 4:58 UTC (permalink / raw)
To: broonie, lee.jones, linus.walleij
Cc: linux-omap, robh+dt, linux-gpio, devicetree, linux-kernel, 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).
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
drivers/mfd/Kconfig | 14 +++
drivers/mfd/Makefile | 2 +
drivers/mfd/lp873x.c | 97 +++++++++++++++++
include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
4 files changed, 377 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 2d1fb64..45fe00a 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1224,6 +1224,20 @@ config MFD_TPS65217
This driver can also be built as a module. If so, the module
will be called tps65217.
+config MFD_TI_LP873X
+ tristate "TI LP873X Power Management IC"
+ depends on I2C
+ select MFD_CORE
+ select REGMAP_I2C
+ help
+ If you say yes here then you get support for the LP873X series of
+ Power Management Integrated Circuits(PMIC).
+ These include voltage regulators, Thermal protection, Configurable
+ General Purpose Outputs(GPO) that are 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 2ba3ba3..42acbcd 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_TI_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..3ca0462
--- /dev/null
+++ b/drivers/mfd/lp873x.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Keerthy <j-keerthy@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/interrupt.h>
+#include <linux/mfd/core.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regmap.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 mfd_cell lp873x_cells[] = {
+ { .name = "lp873x-regulator", },
+ { .name = "lp873x-gpio", },
+};
+
+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;
+
+ 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->lock);
+
+ ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
+ if (ret) {
+ dev_err(lp873->dev, "Failed to read OTP ID\n");
+ return ret;
+ }
+
+ lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
+ i2c_set_clientdata(client, lp873);
+ ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
+ ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
+
+ return ret;
+}
+
+static const struct of_device_id of_lp873x_match_table[] = {
+ { .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 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
+
+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..42bebfa
--- /dev/null
+++ b/include/linux/mfd/lp873x.h
@@ -0,0 +1,264 @@
+/*
+ * 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 lp873x - state holder for the lp873x driver
+ * Device data may be used to access the LP873X chip
+ */
+struct lp873x {
+ struct device *dev;
+ u8 rev;
+ struct mutex lock; /* lock guarding the data structure */
+ struct regmap *regmap;
+};
+#endif /* __LINUX_MFD_LP873X_H */
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v8 1/3] mfd: lp873x: Add lp873x PMIC support
2016-08-12 4:58 ` [PATCH v8 1/3] " Keerthy
@ 2016-08-31 7:56 ` Lee Jones
2016-08-31 8:13 ` Keerthy
0 siblings, 1 reply; 7+ messages in thread
From: Lee Jones @ 2016-08-31 7:56 UTC (permalink / raw)
To: Keerthy
Cc: broonie, linus.walleij, linux-omap, robh+dt, linux-gpio,
devicetree, linux-kernel
On Fri, 12 Aug 2016, Keerthy wrote:
> 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).
Nit: Better to place a ' ' before the '(' in all cases.
Also below and n the Kconfig.
> 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).
>
> Signed-off-by: Keerthy <j-keerthy@ti.com>
> ---
> drivers/mfd/Kconfig | 14 +++
> drivers/mfd/Makefile | 2 +
> drivers/mfd/lp873x.c | 97 +++++++++++++++++
> include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 377 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 2d1fb64..45fe00a 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1224,6 +1224,20 @@ config MFD_TPS65217
> This driver can also be built as a module. If so, the module
> will be called tps65217.
>
> +config MFD_TI_LP873X
> + tristate "TI LP873X Power Management IC"
> + depends on I2C
> + select MFD_CORE
> + select REGMAP_I2C
> + help
> + If you say yes here then you get support for the LP873X series of
> + Power Management Integrated Circuits(PMIC).
> + These include voltage regulators, Thermal protection, Configurable
"thermal"
"configurable"
> + General Purpose Outputs(GPO) that are 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 2ba3ba3..42acbcd 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-$(CONFIG_MFD_TI_LP873X) += lp873x.o
> +
> obj-$(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..3ca0462
> --- /dev/null
> +++ b/drivers/mfd/lp873x.c
> @@ -0,0 +1,97 @@
> +/*
> + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Keerthy <j-keerthy@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/interrupt.h>
> +#include <linux/mfd/core.h>
> +#include <linux/module.h>
> +#include <linux/of_device.h>
> +#include <linux/regmap.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 mfd_cell lp873x_cells[] = {
> + { .name = "lp873x-regulator", },
> + { .name = "lp873x-gpio", },
> +};
> +
> +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;
> +
> + 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->lock);
> +
> + ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
> + if (ret) {
> + dev_err(lp873->dev, "Failed to read OTP ID\n");
> + return ret;
> + }
> +
> + lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
'\n' here.
> + i2c_set_clientdata(client, lp873);
'\n' here.
> + ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
> + ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
> +
> + return ret;
> +}
> +
> +static const struct of_device_id of_lp873x_match_table[] = {
> + { .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 },
> + { },
> +};
> +MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
Don't set the ID in this table.
> +static struct i2c_driver lp873x_driver = {
> + .driver = {
Odd tabbing.
> + .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");
"Multi-Function Device 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..42bebfa
> --- /dev/null
> +++ b/include/linux/mfd/lp873x.h
> @@ -0,0 +1,264 @@
> +/*
> + * 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 lp873x - state holder for the lp873x driver
> + * Device data may be used to access the LP873X chip
> + */
Please fill in the reset of the kernel-doc.
One entry per attribute.
> +struct lp873x {
> + struct device *dev;
> + u8 rev;
> + struct mutex lock; /* lock guarding the data structure */
> + struct regmap *regmap;
> +};
> +#endif /* __LINUX_MFD_LP873X_H */
Remove 1 ' '.
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH v8 1/3] mfd: lp873x: Add lp873x PMIC support
2016-08-31 7:56 ` Lee Jones
@ 2016-08-31 8:13 ` Keerthy
2016-08-31 11:16 ` Lee Jones
0 siblings, 1 reply; 7+ messages in thread
From: Keerthy @ 2016-08-31 8:13 UTC (permalink / raw)
To: Lee Jones, Keerthy
Cc: broonie, linus.walleij, linux-omap, robh+dt, linux-gpio,
devicetree, linux-kernel
On Wednesday 31 August 2016 01:26 PM, Lee Jones wrote:
> On Fri, 12 Aug 2016, Keerthy wrote:
>
>> 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).
>
> Nit: Better to place a ' ' before the '(' in all cases.
>
> Also below and n the Kconfig.
Okay.
>
>> 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).
>>
>> Signed-off-by: Keerthy <j-keerthy@ti.com>
>> ---
>> drivers/mfd/Kconfig | 14 +++
>> drivers/mfd/Makefile | 2 +
>> drivers/mfd/lp873x.c | 97 +++++++++++++++++
>> include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
>> 4 files changed, 377 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 2d1fb64..45fe00a 100644
>> --- a/drivers/mfd/Kconfig
>> +++ b/drivers/mfd/Kconfig
>> @@ -1224,6 +1224,20 @@ config MFD_TPS65217
>> This driver can also be built as a module. If so, the module
>> will be called tps65217.
>>
>> +config MFD_TI_LP873X
>> + tristate "TI LP873X Power Management IC"
>> + depends on I2C
>> + select MFD_CORE
>> + select REGMAP_I2C
>> + help
>> + If you say yes here then you get support for the LP873X series of
>> + Power Management Integrated Circuits(PMIC).
>> + These include voltage regulators, Thermal protection, Configurable
>
> "thermal"
> "configurable"
Okay.
>
>> + General Purpose Outputs(GPO) that are 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 2ba3ba3..42acbcd 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_TI_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..3ca0462
>> --- /dev/null
>> +++ b/drivers/mfd/lp873x.c
>> @@ -0,0 +1,97 @@
>> +/*
>> + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
>> + *
>> + * Author: Keerthy <j-keerthy@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/interrupt.h>
>> +#include <linux/mfd/core.h>
>> +#include <linux/module.h>
>> +#include <linux/of_device.h>
>> +#include <linux/regmap.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 mfd_cell lp873x_cells[] = {
>> + { .name = "lp873x-regulator", },
>> + { .name = "lp873x-gpio", },
>> +};
>> +
>> +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;
>> +
>> + 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->lock);
>> +
>> + ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
>> + if (ret) {
>> + dev_err(lp873->dev, "Failed to read OTP ID\n");
>> + return ret;
>> + }
>> +
>> + lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
>
> '\n' here.
>
>> + i2c_set_clientdata(client, lp873);
>
> '\n' here.
Okay.
>
>> + ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
>> + ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
>> +
>> + return ret;
>> +}
>> +
>> +static const struct of_device_id of_lp873x_match_table[] = {
>> + { .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 },
>> + { },
>> +};
>> +MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
>
> Don't set the ID in this table.
I did not understand this. Could you please elaborate?
You mean no need of LP873X can just be a '0' as i am seeing in other mfd
drivers?
>
>> +static struct i2c_driver lp873x_driver = {
>> + .driver = {
>
> Odd tabbing.
I will correct this.
>
>> + .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");
>
> "Multi-Function Device driver"
Okay.
>
>> +MODULE_LICENSE("GPL v2");
>> diff --git a/include/linux/mfd/lp873x.h b/include/linux/mfd/lp873x.h
>> new file mode 100644
>> index 0000000..42bebfa
>> --- /dev/null
>> +++ b/include/linux/mfd/lp873x.h
>> @@ -0,0 +1,264 @@
>> +/*
>> + * 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 lp873x - state holder for the lp873x driver
>> + * Device data may be used to access the LP873X chip
>> + */
>
> Please fill in the reset of the kernel-doc.
>
> One entry per attribute.
Okay.
>
>> +struct lp873x {
>> + struct device *dev;
>> + u8 rev;
>> + struct mutex lock; /* lock guarding the data structure */
>> + struct regmap *regmap;
>> +};
>> +#endif /* __LINUX_MFD_LP873X_H */
>
> Remove 1 ' '.
Okay
>
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH v8 1/3] mfd: lp873x: Add lp873x PMIC support
2016-08-31 8:13 ` Keerthy
@ 2016-08-31 11:16 ` Lee Jones
0 siblings, 0 replies; 7+ messages in thread
From: Lee Jones @ 2016-08-31 11:16 UTC (permalink / raw)
To: Keerthy
Cc: Keerthy, broonie, linus.walleij, linux-omap, robh+dt, linux-gpio,
devicetree, linux-kernel
On Wed, 31 Aug 2016, Keerthy wrote:
> On Wednesday 31 August 2016 01:26 PM, Lee Jones wrote:
> > On Fri, 12 Aug 2016, Keerthy wrote:
> >
> > > 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).
[...]
> > > +static const struct i2c_device_id lp873x_id_table[] = {
> > > + { "lp873x", LP873X },
> > > + { },
> > > +};
> > > +MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
> >
> > Don't set the ID in this table.
>
> I did not understand this. Could you please elaborate?
> You mean no need of LP873X can just be a '0' as i am seeing in other mfd
> drivers?
Just leave it blank. No need for the second attribute.
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v8 2/3] gpio: lp873x: Add support for General Purpose Outputs
2016-08-12 4:58 [PATCH v8 0/3] mfd: lp873x: Add lp873x PMIC support Keerthy
2016-08-12 4:58 ` [PATCH v8 1/3] " Keerthy
@ 2016-08-12 4:58 ` Keerthy
2016-08-12 4:58 ` [PATCH v8 3/3] regulator: lp873x: Change the MFD config option as per latest naming Keerthy
2 siblings, 0 replies; 7+ messages in thread
From: Keerthy @ 2016-08-12 4:58 UTC (permalink / raw)
To: broonie, lee.jones, linus.walleij
Cc: linux-omap, robh+dt, linux-gpio, devicetree, linux-kernel, j-keerthy
Add driver for lp873x PMIC family GPOs. Two GPOs are supported
and can be configured in Open-drain output or Push-pull output.
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
Changes in v8:
* Replaced hardcoded bit fields with macros.
drivers/gpio/Kconfig | 10 +++
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-lp873x.c | 193 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 204 insertions(+)
create mode 100644 drivers/gpio/gpio-lp873x.c
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 6de9062..ff68a80 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -853,6 +853,16 @@ config GPIO_LP3943
LP3943 can be used as a GPIO expander which provides up to 16 GPIOs.
Open drain outputs are required for this usage.
+config GPIO_LP873X
+ tristate "TI LP873X GPO"
+ depends on MFD_TI_LP873X
+ help
+ This driver supports the GPO on TI Lp873x PMICs. 2 GPOs are present
+ on LP873X PMICs.
+
+ This driver can also be built as a module. If so, the module will be
+ called gpio-lp873x.
+
config GPIO_MAX77620
tristate "GPIO support for PMIC MAX77620 and MAX20024"
depends on MFD_MAX77620
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 2a035ed..d60432f 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -56,6 +56,7 @@ obj-$(CONFIG_GPIO_LOONGSON) += gpio-loongson.o
obj-$(CONFIG_GPIO_LP3943) += gpio-lp3943.o
obj-$(CONFIG_GPIO_LPC18XX) += gpio-lpc18xx.o
obj-$(CONFIG_ARCH_LPC32XX) += gpio-lpc32xx.o
+obj-$(CONFIG_GPIO_LP873X) += gpio-lp873x.o
obj-$(CONFIG_GPIO_LYNXPOINT) += gpio-lynxpoint.o
obj-$(CONFIG_GPIO_MAX730X) += gpio-max730x.o
obj-$(CONFIG_GPIO_MAX7300) += gpio-max7300.o
diff --git a/drivers/gpio/gpio-lp873x.c b/drivers/gpio/gpio-lp873x.c
new file mode 100644
index 0000000..79c255d
--- /dev/null
+++ b/drivers/gpio/gpio-lp873x.c
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
+ * Keerthy <j-keerthy@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.
+ *
+ * Based on the TPS65218 driver
+ */
+
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <linux/mfd/lp873x.h>
+
+#define BITS_PER_GPO 0x4
+#define LP873X_GPO_CTRL_OD 0x2
+
+struct lp873x_gpio {
+ struct gpio_chip chip;
+ struct lp873x *lp873;
+};
+
+static int lp873x_gpio_get_direction(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ /* This device is output only */
+ return 0;
+}
+
+static int lp873x_gpio_direction_input(struct gpio_chip *chip,
+ unsigned int offset)
+{
+ /* This device is output only */
+ return -EINVAL;
+}
+
+static int lp873x_gpio_direction_output(struct gpio_chip *chip,
+ unsigned int offset, int value)
+{
+ struct lp873x_gpio *gpio = gpiochip_get_data(chip);
+
+ /* Set the initial value */
+ return regmap_update_bits(gpio->lp873->regmap, LP873X_REG_GPO_CTRL,
+ BIT(offset * BITS_PER_GPO),
+ value ? BIT(offset * BITS_PER_GPO) : 0);
+}
+
+static int lp873x_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+ struct lp873x_gpio *gpio = gpiochip_get_data(chip);
+ int ret, val;
+
+ ret = regmap_read(gpio->lp873->regmap, LP873X_REG_GPO_CTRL, &val);
+ if (ret < 0)
+ return ret;
+
+ return val & BIT(offset * BITS_PER_GPO);
+}
+
+static void lp873x_gpio_set(struct gpio_chip *chip, unsigned int offset,
+ int value)
+{
+ struct lp873x_gpio *gpio = gpiochip_get_data(chip);
+
+ regmap_update_bits(gpio->lp873->regmap, LP873X_REG_GPO_CTRL,
+ BIT(offset * BITS_PER_GPO),
+ value ? BIT(offset * BITS_PER_GPO) : 0);
+}
+
+static int lp873x_gpio_request(struct gpio_chip *gc, unsigned int offset)
+{
+ struct lp873x_gpio *gpio = gpiochip_get_data(gc);
+ int ret;
+
+ switch (offset) {
+ case 0:
+ /* No MUX Set up Needed for GPO */
+ break;
+ case 1:
+ /* Setup the CLKIN_PIN_SEL MUX to GPO2 */
+ ret = regmap_update_bits(gpio->lp873->regmap, LP873X_REG_CONFIG,
+ LP873X_CONFIG_CLKIN_PIN_SEL, 0);
+ if (ret)
+ return ret;
+
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int lp873x_gpio_set_single_ended(struct gpio_chip *gc,
+ unsigned int offset,
+ enum single_ended_mode mode)
+{
+ struct lp873x_gpio *gpio = gpiochip_get_data(gc);
+
+ switch (mode) {
+ case LINE_MODE_OPEN_DRAIN:
+ return regmap_update_bits(gpio->lp873->regmap,
+ LP873X_REG_GPO_CTRL,
+ BIT(offset * BITS_PER_GPO +
+ LP873X_GPO_CTRL_OD),
+ BIT(offset * BITS_PER_GPO +
+ LP873X_GPO_CTRL_OD));
+ case LINE_MODE_PUSH_PULL:
+ return regmap_update_bits(gpio->lp873->regmap,
+ LP873X_REG_GPO_CTRL,
+ BIT(offset * BITS_PER_GPO +
+ LP873X_GPO_CTRL_OD), 0);
+ default:
+ return -ENOTSUPP;
+ }
+}
+
+static struct gpio_chip template_chip = {
+ .label = "lp873x-gpio",
+ .owner = THIS_MODULE,
+ .request = lp873x_gpio_request,
+ .get_direction = lp873x_gpio_get_direction,
+ .direction_input = lp873x_gpio_direction_input,
+ .direction_output = lp873x_gpio_direction_output,
+ .get = lp873x_gpio_get,
+ .set = lp873x_gpio_set,
+ .set_single_ended = lp873x_gpio_set_single_ended,
+ .base = -1,
+ .ngpio = 2,
+ .can_sleep = true,
+};
+
+static int lp873x_gpio_probe(struct platform_device *pdev)
+{
+ struct lp873x_gpio *gpio;
+ int ret;
+
+ gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
+ if (!gpio)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, gpio);
+
+ gpio->lp873 = dev_get_drvdata(pdev->dev.parent);
+ gpio->chip = template_chip;
+ gpio->chip.parent = gpio->lp873->dev;
+
+ ret = gpiochip_add_data(&gpio->chip, gpio);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int lp873x_gpio_remove(struct platform_device *pdev)
+{
+ struct lp873x_gpio *gpio = platform_get_drvdata(pdev);
+
+ gpiochip_remove(&gpio->chip);
+
+ return 0;
+}
+
+static const struct platform_device_id lp873x_gpio_id_table[] = {
+ { "lp873x-gpio", },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, lp873x_gpio_id_table);
+
+static struct platform_driver lp873x_gpio_driver = {
+ .driver = {
+ .name = "lp873x-gpio",
+ },
+ .probe = lp873x_gpio_probe,
+ .remove = lp873x_gpio_remove,
+ .id_table = lp873x_gpio_id_table,
+};
+module_platform_driver(lp873x_gpio_driver);
+
+MODULE_AUTHOR("Keerthy <j-keerthy@ti.com>");
+MODULE_DESCRIPTION("LP873X GPIO driver");
+MODULE_LICENSE("GPL v2");
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v8 3/3] regulator: lp873x: Change the MFD config option as per latest naming
2016-08-12 4:58 [PATCH v8 0/3] mfd: lp873x: Add lp873x PMIC support Keerthy
2016-08-12 4:58 ` [PATCH v8 1/3] " Keerthy
2016-08-12 4:58 ` [PATCH v8 2/3] gpio: lp873x: Add support for General Purpose Outputs Keerthy
@ 2016-08-12 4:58 ` Keerthy
2 siblings, 0 replies; 7+ messages in thread
From: Keerthy @ 2016-08-12 4:58 UTC (permalink / raw)
To: broonie, lee.jones, linus.walleij
Cc: linux-omap, robh+dt, linux-gpio, devicetree, linux-kernel, j-keerthy
Change the MFD config option as per latest naming
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Keerthy <j-keerthy@ti.com>
---
drivers/regulator/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 6c88e31..97dc4cc 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -323,7 +323,7 @@ config REGULATOR_LP872X
config REGULATOR_LP873X
tristate "TI LP873X Power regulators"
- depends on MFD_LP873X && OF
+ depends on MFD_TI_LP873X && OF
help
This driver supports LP873X voltage regulator chips. LP873X
provides two step-down converters and two general-purpose LDO
--
1.9.1
^ permalink raw reply related [flat|nested] 7+ messages in thread