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Date:	Tue, 14 Oct 2014 10:41:11 +0200
From:	Krzysztof Kozłowski <k.kozlowski@...sung.com>
To:	Thomas Abraham <thomas.ab@...sung.com>, lee.jones@...aro.org,
	devicetree-discuss@...ts.ozlabs.org
Cc:	kgene.kim@...sung.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] mfd: sec: Add support for S2MPS15 PMIC

On 14.10.2014 10:14, Thomas Abraham wrote:
> Add support for S2MPS15 PMIC which is similar to S2MPS11 PMIC. The S2MPS15
> PMIC supports 27 LDO regulators, 10 buck regulators, RTC, three 32.768KHz
> clock outputs and battery charger. This patch adds initial support for
> LDO and buck regulators of S2MPS15 device.
> 
> Signed-off-by: Thomas Abraham <thomas.ab@...sung.com>

Quite nice and small diff stat for adding new chip support. Looks good.
I assume that RTC/clock will be handled in later submissions.

Reviewed-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>

Best regards,
Krzysztof

> ---
>  drivers/mfd/sec-core.c              |   26 ++++++
>  include/linux/mfd/samsung/core.h    |    1 +
>  include/linux/mfd/samsung/s2mps15.h |  161 +++++++++++++++++++++++++++++++++++
>  3 files changed, 188 insertions(+), 0 deletions(-)
>  create mode 100644 include/linux/mfd/samsung/s2mps15.h
> 
> diff --git a/drivers/mfd/sec-core.c b/drivers/mfd/sec-core.c
> index dba7e2b..6f33c2b 100644
> --- a/drivers/mfd/sec-core.c
> +++ b/drivers/mfd/sec-core.c
> @@ -28,6 +28,7 @@
>  #include <linux/mfd/samsung/s2mpa01.h>
>  #include <linux/mfd/samsung/s2mps11.h>
>  #include <linux/mfd/samsung/s2mps14.h>
> +#include <linux/mfd/samsung/s2mps15.h>
>  #include <linux/mfd/samsung/s2mpu02.h>
>  #include <linux/mfd/samsung/s5m8763.h>
>  #include <linux/mfd/samsung/s5m8767.h>
> @@ -85,6 +86,12 @@ static const struct mfd_cell s2mps14_devs[] = {
>  	}
>  };
>  
> +static const struct mfd_cell s2mps15_devs[] = {
> +	{
> +		.name = "s2mps15-pmic",
> +	},
> +};
> +
>  static const struct mfd_cell s2mpa01_devs[] = {
>  	{
>  		.name = "s2mpa01-pmic",
> @@ -111,6 +118,9 @@ static const struct of_device_id sec_dt_match[] = {
>  		.compatible = "samsung,s2mps14-pmic",
>  		.data = (void *)S2MPS14X,
>  	}, {
> +		.compatible = "samsung,s2mps15-pmic",
> +		.data = (void *)S2MPS15X,
> +	}, {
>  		.compatible = "samsung,s2mpa01-pmic",
>  		.data = (void *)S2MPA01,
>  	}, {
> @@ -203,6 +213,15 @@ static const struct regmap_config s2mps14_regmap_config = {
>  	.cache_type = REGCACHE_FLAT,
>  };
>  
> +static const struct regmap_config s2mps15_regmap_config = {
> +	.reg_bits = 8,
> +	.val_bits = 8,
> +
> +	.max_register = S2MPS15_REG_LDODSCH4,
> +	.volatile_reg = s2mps11_volatile,
> +	.cache_type = REGCACHE_FLAT,
> +};
> +
>  static const struct regmap_config s2mpu02_regmap_config = {
>  	.reg_bits = 8,
>  	.val_bits = 8,
> @@ -328,6 +347,9 @@ static int sec_pmic_probe(struct i2c_client *i2c,
>  	case S2MPS14X:
>  		regmap = &s2mps14_regmap_config;
>  		break;
> +	case S2MPS15X:
> +		regmap = &s2mps15_regmap_config;
> +		break;
>  	case S5M8763X:
>  		regmap = &s5m8763_regmap_config;
>  		break;
> @@ -382,6 +404,10 @@ static int sec_pmic_probe(struct i2c_client *i2c,
>  		sec_devs = s2mps14_devs;
>  		num_sec_devs = ARRAY_SIZE(s2mps14_devs);
>  		break;
> +	case S2MPS15X:
> +		sec_devs = s2mps15_devs;
> +		num_sec_devs = ARRAY_SIZE(s2mps15_devs);
> +		break;
>  	case S2MPU02:
>  		sec_devs = s2mpu02_devs;
>  		num_sec_devs = ARRAY_SIZE(s2mpu02_devs);
> diff --git a/include/linux/mfd/samsung/core.h b/include/linux/mfd/samsung/core.h
> index 1825eda..49ef612 100644
> --- a/include/linux/mfd/samsung/core.h
> +++ b/include/linux/mfd/samsung/core.h
> @@ -42,6 +42,7 @@ enum sec_device_type {
>  	S2MPA01,
>  	S2MPS11X,
>  	S2MPS14X,
> +	S2MPS15X,
>  	S2MPU02,
>  };
>  
> diff --git a/include/linux/mfd/samsung/s2mps15.h b/include/linux/mfd/samsung/s2mps15.h
> new file mode 100644
> index 0000000..e82549a
> --- /dev/null
> +++ b/include/linux/mfd/samsung/s2mps15.h
> @@ -0,0 +1,161 @@
> +/*
> + * s2mps15.h
> + *
> + * Copyright (c) 2014 Samsung Electronics Co., Ltd
> + *              http://www.samsung.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;  either version 2 of the  License, or (at your
> + * option) any later version.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; 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_S2MPS15_H
> +#define __LINUX_MFD_S2MPS15_H
> +
> +/* S2MPS15 registers */
> +enum s2mps15_reg {
> +	S2MPS15_REG_ID,
> +	S2MPS15_REG_INT1,
> +	S2MPS15_REG_INT2,
> +	S2MPS15_REG_INT3,
> +	S2MPS15_REG_INT1M,
> +	S2MPS15_REG_INT2M,
> +	S2MPS15_REG_INT3M,
> +	S2MPS15_REG_ST1,
> +	S2MPS15_REG_ST2,
> +	S2MPS15_REG_PWRONSRC,
> +	S2MPS15_REG_OFFSRC,
> +	S2MPS15_REG_BU_CHG,
> +	S2MPS15_REG_RTCCTRL,
> +	S2MPS15_REG_CTRL1,
> +	S2MPS15_REG_CTRL2,
> +	S2MPS15_REG_RSVD1,
> +	S2MPS15_REG_RSVD2,
> +	S2MPS15_REG_RSVD3,
> +	S2MPS15_REG_RSVD4,
> +	S2MPS15_REG_RSVD5,
> +	S2MPS15_REG_RSVD6,
> +	S2MPS15_REG_CTRL3,
> +	S2MPS15_REG_RSVD7,
> +	S2MPS15_REG_RSVD8,
> +	S2MPS15_REG_WRSTBI,
> +	S2MPS15_REG_B1CTRL1,
> +	S2MPS15_REG_B1CTRL2,
> +	S2MPS15_REG_B2CTRL1,
> +	S2MPS15_REG_B2CTRL2,
> +	S2MPS15_REG_B3CTRL1,
> +	S2MPS15_REG_B3CTRL2,
> +	S2MPS15_REG_B4CTRL1,
> +	S2MPS15_REG_B4CTRL2,
> +	S2MPS15_REG_B5CTRL1,
> +	S2MPS15_REG_B5CTRL2,
> +	S2MPS15_REG_B6CTRL1,
> +	S2MPS15_REG_B6CTRL2,
> +	S2MPS15_REG_B7CTRL1,
> +	S2MPS15_REG_B7CTRL2,
> +	S2MPS15_REG_B8CTRL1,
> +	S2MPS15_REG_B8CTRL2,
> +	S2MPS15_REG_B9CTRL1,
> +	S2MPS15_REG_B9CTRL2,
> +	S2MPS15_REG_B10CTRL1,
> +	S2MPS15_REG_B10CTRL2,
> +	S2MPS15_REG_BBCTRL1,
> +	S2MPS15_REG_BBCTRL2,
> +	S2MPS15_REG_BRAMP,
> +	S2MPS15_REG_LDODVS1,
> +	S2MPS15_REG_LDODVS2,
> +	S2MPS15_REG_LDODVS3,
> +	S2MPS15_REG_LDODVS4,
> +	S2MPS15_REG_L1CTRL,
> +	S2MPS15_REG_L2CTRL,
> +	S2MPS15_REG_L3CTRL,
> +	S2MPS15_REG_L4CTRL,
> +	S2MPS15_REG_L5CTRL,
> +	S2MPS15_REG_L6CTRL,
> +	S2MPS15_REG_L7CTRL,
> +	S2MPS15_REG_L8CTRL,
> +	S2MPS15_REG_L9CTRL,
> +	S2MPS15_REG_L10CTRL,
> +	S2MPS15_REG_L11CTRL,
> +	S2MPS15_REG_L12CTRL,
> +	S2MPS15_REG_L13CTRL,
> +	S2MPS15_REG_L14CTRL,
> +	S2MPS15_REG_L15CTRL,
> +	S2MPS15_REG_L16CTRL,
> +	S2MPS15_REG_L17CTRL,
> +	S2MPS15_REG_L18CTRL,
> +	S2MPS15_REG_L19CTRL,
> +	S2MPS15_REG_L20CTRL,
> +	S2MPS15_REG_L21CTRL,
> +	S2MPS15_REG_L22CTRL,
> +	S2MPS15_REG_L23CTRL,
> +	S2MPS15_REG_L24CTRL,
> +	S2MPS15_REG_L25CTRL,
> +	S2MPS15_REG_L26CTRL,
> +	S2MPS15_REG_L27CTRL,
> +	S2MPS15_REG_LDODSCH1,
> +	S2MPS15_REG_LDODSCH2,
> +	S2MPS15_REG_LDODSCH3,
> +	S2MPS15_REG_LDODSCH4,
> +};
> +
> +/* S2MPS15 regulator ids */
> +enum s2mps15_regulators {
> +	S2MPS15_LDO1,
> +	S2MPS15_LDO2,
> +	S2MPS15_LDO3,
> +	S2MPS15_LDO4,
> +	S2MPS15_LDO5,
> +	S2MPS15_LDO6,
> +	S2MPS15_LDO7,
> +	S2MPS15_LDO8,
> +	S2MPS15_LDO9,
> +	S2MPS15_LDO10,
> +	S2MPS15_LDO11,
> +	S2MPS15_LDO12,
> +	S2MPS15_LDO13,
> +	S2MPS15_LDO14,
> +	S2MPS15_LDO15,
> +	S2MPS15_LDO16,
> +	S2MPS15_LDO17,
> +	S2MPS15_LDO18,
> +	S2MPS15_LDO19,
> +	S2MPS15_LDO20,
> +	S2MPS15_LDO21,
> +	S2MPS15_LDO22,
> +	S2MPS15_LDO23,
> +	S2MPS15_LDO24,
> +	S2MPS15_LDO25,
> +	S2MPS15_LDO26,
> +	S2MPS15_LDO27,
> +	S2MPS15_BUCK1,
> +	S2MPS15_BUCK2,
> +	S2MPS15_BUCK3,
> +	S2MPS15_BUCK4,
> +	S2MPS15_BUCK5,
> +	S2MPS15_BUCK6,
> +	S2MPS15_BUCK7,
> +	S2MPS15_BUCK8,
> +	S2MPS15_BUCK9,
> +	S2MPS15_BUCK10,
> +	S2MPS15_BUCK11,
> +	S2MPS15_REGULATOR_MAX,
> +};
> +
> +#define S2MPS15_LDO_VSEL_MASK		(0x3F)
> +#define S2MPS15_BUCK_VSEL_MASK		(0xFF)
> +
> +#define S2MPS15_ENABLE_SHIFT		(0x06)
> +#define S2MPS15_ENABLE_MASK		(0x03 << S2MPS15_ENABLE_SHIFT)
> +
> +#define S2MPS15_LDO_N_VOLTAGES		(S2MPS15_LDO_VSEL_MASK + 1)
> +#define S2MPS15_BUCK_N_VOLTAGES	(S2MPS15_BUCK_VSEL_MASK + 1)
> +
> +#endif /*  __LINUX_MFD_S2MPS15_H */
> 

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