[v3,2/2] mfd: lp873x: Add lp873x PMIC support

Message ID	1463111290-12377-3-git-send-email-j-keerthy@ti.com (mailing list archive)
State	New, archived
Headers	show Return-Path: <linux-omap-owner@kernel.org> From: Keerthy <j-keerthy@ti.com> To: <broonie@kernel.org>, <tony@atomide.com>, <robh+dt@kernel.org>, <mark.rutland@arm.com>, <lee.jones@linaro.org> CC: <linux-omap@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>, <j-keerthy@ti.com> Subject: [PATCH v3 2/2] mfd: lp873x: Add lp873x PMIC support Date: Fri, 13 May 2016 09:18:10 +0530 Message-ID: <1463111290-12377-3-git-send-email-j-keerthy@ti.com> In-Reply-To: <1463111290-12377-1-git-send-email-j-keerthy@ti.com> References: <1463111290-12377-1-git-send-email-j-keerthy@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-omap-owner@vger.kernel.org Precedence: bulk

J, KEERTHY May 13, 2016, 3:48 a.m. UTC

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>
---

Changes in v3:

  * Reordered the probe code.
  * Fixed Typo in Kconfig description.
  * Removed unused member from struct lp873x.

 drivers/mfd/Kconfig        |  14 +++
 drivers/mfd/Makefile       |   2 +
 drivers/mfd/lp873x.c       |  96 +++++++++++++++++
 include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 376 insertions(+)
 create mode 100644 drivers/mfd/lp873x.c
 create mode 100644 include/linux/mfd/lp873x.h

Keerthy May 17, 2016, 10:31 a.m. UTC | #1

On Friday 13 May 2016 09:18 AM, 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).
>
> 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).

Hi Lee Jones,

I fixed your comments on v2 and posted this version last week.

Regards,
Keerthy

>
> Signed-off-by: Keerthy <j-keerthy@ti.com>
> ---
>
> Changes in v3:
>
>    * Reordered the probe code.
>    * Fixed Typo in Kconfig description.
>    * Removed unused member from struct lp873x.
>
>   drivers/mfd/Kconfig        |  14 +++
>   drivers/mfd/Makefile       |   2 +
>   drivers/mfd/lp873x.c       |  96 +++++++++++++++++
>   include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
>   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..a7e48e7 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1185,6 +1185,20 @@ 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 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 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..ba49d56
> --- /dev/null
> +++ b/drivers/mfd/lp873x.c
> @@ -0,0 +1,96 @@
> +/*
> + * 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/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", },
> +};
> +
> +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->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 },
> +	{ "lp8732", LP873X },
> +	{ "lp8733", 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..fb7ec55
> --- /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 lp873_lock;	/* lock guarding the data structure */
> +	struct regmap *regmap;
> +};
> +#endif /*  __LINUX_MFD_LP873X_H */
>
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Lee Jones May 17, 2016, 10:49 a.m. UTC | #2

On Tue, 17 May 2016, Keerthy wrote:

> 
> 
> On Friday 13 May 2016 09:18 AM, 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).
> >
> >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).
> 
> Hi Lee Jones,
> 
> I fixed your comments on v2 and posted this version last week.

I can see it.  It's marked as "to-review" in my Inbox.

Sending pings will not speed up the process.

... and the merge window is open too.

> >Signed-off-by: Keerthy <j-keerthy@ti.com>
> >---
> >
> >Changes in v3:
> >
> >   * Reordered the probe code.
> >   * Fixed Typo in Kconfig description.
> >   * Removed unused member from struct lp873x.
> >
> >  drivers/mfd/Kconfig        |  14 +++
> >  drivers/mfd/Makefile       |   2 +
> >  drivers/mfd/lp873x.c       |  96 +++++++++++++++++
> >  include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
> >  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..a7e48e7 100644
> >--- a/drivers/mfd/Kconfig
> >+++ b/drivers/mfd/Kconfig
> >@@ -1185,6 +1185,20 @@ 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 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 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..ba49d56
> >--- /dev/null
> >+++ b/drivers/mfd/lp873x.c
> >@@ -0,0 +1,96 @@
> >+/*
> >+ * 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/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", },
> >+};
> >+
> >+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->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 },
> >+	{ "lp8732", LP873X },
> >+	{ "lp8733", 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..fb7ec55
> >--- /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 lp873_lock;	/* lock guarding the data structure */
> >+	struct regmap *regmap;
> >+};
> >+#endif /*  __LINUX_MFD_LP873X_H */
> >

Keerthy June 6, 2016, 3:36 a.m. UTC | #3

Hi Lee Jones,

On Tuesday 17 May 2016 04:19 PM, Lee Jones wrote:
> On Tue, 17 May 2016, Keerthy wrote:
>
>>
>>
>> On Friday 13 May 2016 09:18 AM, 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).
>>>
>>> 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).
>>
>> Hi Lee Jones,
>>
>> I fixed your comments on v2 and posted this version last week.
>
> I can see it.  It's marked as "to-review" in my Inbox.
>
> Sending pings will not speed up the process.
>
> ... and the merge window is open too.

A gentle ping on this.

>
>>> Signed-off-by: Keerthy <j-keerthy@ti.com>
>>> ---
>>>
>>> Changes in v3:
>>>
>>>    * Reordered the probe code.
>>>    * Fixed Typo in Kconfig description.
>>>    * Removed unused member from struct lp873x.
>>>
>>>   drivers/mfd/Kconfig        |  14 +++
>>>   drivers/mfd/Makefile       |   2 +
>>>   drivers/mfd/lp873x.c       |  96 +++++++++++++++++
>>>   include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
>>>   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..a7e48e7 100644
>>> --- a/drivers/mfd/Kconfig
>>> +++ b/drivers/mfd/Kconfig
>>> @@ -1185,6 +1185,20 @@ 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 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 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..ba49d56
>>> --- /dev/null
>>> +++ b/drivers/mfd/lp873x.c
>>> @@ -0,0 +1,96 @@
>>> +/*
>>> + * 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/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", },
>>> +};
>>> +
>>> +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->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 },
>>> +	{ "lp8732", LP873X },
>>> +	{ "lp8733", 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..fb7ec55
>>> --- /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 lp873_lock;	/* lock guarding the data structure */
>>> +	struct regmap *regmap;
>>> +};
>>> +#endif /*  __LINUX_MFD_LP873X_H */
>>>
>
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Lee Jones June 6, 2016, 8:55 a.m. UTC | #4

On Mon, 06 Jun 2016, Keerthy wrote:

> Hi Lee Jones,
> 
> On Tuesday 17 May 2016 04:19 PM, Lee Jones wrote:
> >On Tue, 17 May 2016, Keerthy wrote:
> >
> >>
> >>
> >>On Friday 13 May 2016 09:18 AM, 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).
> >>>
> >>>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).
> >>
> >>Hi Lee Jones,
> >>
> >>I fixed your comments on v2 and posted this version last week.
> >
> >I can see it.  It's marked as "to-review" in my Inbox.
> >
> >Sending pings will not speed up the process.
> >
> >... and the merge window is open too.
> 
> A gentle ping on this.

Pings only function is to annoy.

The patch is marked as "to review" in my inbox.

I'll get round to it when I'm not swamped.

> >>>Signed-off-by: Keerthy <j-keerthy@ti.com>
> >>>---
> >>>
> >>>Changes in v3:
> >>>
> >>>   * Reordered the probe code.
> >>>   * Fixed Typo in Kconfig description.
> >>>   * Removed unused member from struct lp873x.
> >>>
> >>>  drivers/mfd/Kconfig        |  14 +++
> >>>  drivers/mfd/Makefile       |   2 +
> >>>  drivers/mfd/lp873x.c       |  96 +++++++++++++++++
> >>>  include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
> >>>  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..a7e48e7 100644
> >>>--- a/drivers/mfd/Kconfig
> >>>+++ b/drivers/mfd/Kconfig
> >>>@@ -1185,6 +1185,20 @@ 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 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 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..ba49d56
> >>>--- /dev/null
> >>>+++ b/drivers/mfd/lp873x.c
> >>>@@ -0,0 +1,96 @@
> >>>+/*
> >>>+ * 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/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", },
> >>>+};
> >>>+
> >>>+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->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 },
> >>>+	{ "lp8732", LP873X },
> >>>+	{ "lp8733", 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..fb7ec55
> >>>--- /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 lp873_lock;	/* lock guarding the data structure */
> >>>+	struct regmap *regmap;
> >>>+};
> >>>+#endif /*  __LINUX_MFD_LP873X_H */
> >>>
> >

Keerthy June 6, 2016, 9:33 a.m. UTC | #5

On Monday 06 June 2016 02:25 PM, Lee Jones wrote:
> On Mon, 06 Jun 2016, Keerthy wrote:
>
>> Hi Lee Jones,
>>
>> On Tuesday 17 May 2016 04:19 PM, Lee Jones wrote:
>>> On Tue, 17 May 2016, Keerthy wrote:
>>>
>>>>
>>>>
>>>> On Friday 13 May 2016 09:18 AM, 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).
>>>>>
>>>>> 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).
>>>>
>>>> Hi Lee Jones,
>>>>
>>>> I fixed your comments on v2 and posted this version last week.
>>>
>>> I can see it.  It's marked as "to-review" in my Inbox.
>>>
>>> Sending pings will not speed up the process.
>>>
>>> ... and the merge window is open too.
>>
>> A gentle ping on this.
>
> Pings only function is to annoy.
>
> The patch is marked as "to review" in my inbox.

Okay Thanks.

>
> I'll get round to it when I'm not swamped.
>
>>>>> Signed-off-by: Keerthy <j-keerthy@ti.com>
>>>>> ---
>>>>>
>>>>> Changes in v3:
>>>>>
>>>>>    * Reordered the probe code.
>>>>>    * Fixed Typo in Kconfig description.
>>>>>    * Removed unused member from struct lp873x.
>>>>>
>>>>>   drivers/mfd/Kconfig        |  14 +++
>>>>>   drivers/mfd/Makefile       |   2 +
>>>>>   drivers/mfd/lp873x.c       |  96 +++++++++++++++++
>>>>>   include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
>>>>>   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..a7e48e7 100644
>>>>> --- a/drivers/mfd/Kconfig
>>>>> +++ b/drivers/mfd/Kconfig
>>>>> @@ -1185,6 +1185,20 @@ 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 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 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..ba49d56
>>>>> --- /dev/null
>>>>> +++ b/drivers/mfd/lp873x.c
>>>>> @@ -0,0 +1,96 @@
>>>>> +/*
>>>>> + * 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/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", },
>>>>> +};
>>>>> +
>>>>> +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->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 },
>>>>> +	{ "lp8732", LP873X },
>>>>> +	{ "lp8733", 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..fb7ec55
>>>>> --- /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 lp873_lock;	/* lock guarding the data structure */
>>>>> +	struct regmap *regmap;
>>>>> +};
>>>>> +#endif /*  __LINUX_MFD_LP873X_H */
>>>>>
>>>
>
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Lee Jones June 8, 2016, 4:11 p.m. UTC | #6

On Fri, 13 May 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).
> 
> 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>
> ---
> 
> Changes in v3:
> 
>   * Reordered the probe code.
>   * Fixed Typo in Kconfig description.
>   * Removed unused member from struct lp873x.
> 
>  drivers/mfd/Kconfig        |  14 +++
>  drivers/mfd/Makefile       |   2 +
>  drivers/mfd/lp873x.c       |  96 +++++++++++++++++
>  include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
>  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..a7e48e7 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1185,6 +1185,20 @@ 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 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 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..ba49d56
> --- /dev/null
> +++ b/drivers/mfd/lp873x.c
> @@ -0,0 +1,96 @@
> +/*
> + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/

Author?

> + * 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", },
> +};

Where are the other devices?

> +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->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 },
> +	{ "lp8732", LP873X },
> +	{ "lp8733", 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..fb7ec55
> --- /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 lp873_lock;	/* lock guarding the data structure */
> +	struct regmap *regmap;
> +};
> +#endif /*  __LINUX_MFD_LP873X_H */

Keerthy June 8, 2016, 4:17 p.m. UTC | #7

On Wednesday 08 June 2016 09:41 PM, Lee Jones wrote:
> On Fri, 13 May 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).
>>
>> 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>
>> ---
>>
>> Changes in v3:
>>
>>    * Reordered the probe code.
>>    * Fixed Typo in Kconfig description.
>>    * Removed unused member from struct lp873x.
>>
>>   drivers/mfd/Kconfig        |  14 +++
>>   drivers/mfd/Makefile       |   2 +
>>   drivers/mfd/lp873x.c       |  96 +++++++++++++++++
>>   include/linux/mfd/lp873x.h | 264 +++++++++++++++++++++++++++++++++++++++++++++
>>   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..a7e48e7 100644
>> --- a/drivers/mfd/Kconfig
>> +++ b/drivers/mfd/Kconfig
>> @@ -1185,6 +1185,20 @@ 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 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 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..ba49d56
>> --- /dev/null
>> +++ b/drivers/mfd/lp873x.c
>> @@ -0,0 +1,96 @@
>> +/*
>> + * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
>
> Author?

I can add that.

>
>> + * 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", },
>> +};
>
> Where are the other devices?

As of now i have tested regulators on this PMIC. I intend to post GPO 
driver in few days.

>
>> +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->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 },
>> +	{ "lp8732", LP873X },
>> +	{ "lp8733", 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..fb7ec55
>> --- /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 lp873_lock;	/* lock guarding the data structure */
>> +	struct regmap *regmap;
>> +};
>> +#endif /*  __LINUX_MFD_LP873X_H */
>
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[v3,2/2] mfd: lp873x: Add lp873x PMIC support

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