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Subject: Re: [PATCH v5 6/6] mfd: tps68470: Remove tps68470 MFD driver
To:     Daniel Scally <djrscally@gmail.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@intel.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Lee Jones <lee.jones@linaro.org>,
        Maximilian Luz <luzmaximilian@gmail.com>,
        linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
        linux-gpio@vger.kernel.org, linux-i2c@vger.kernel.org,
        platform-driver-x86@vger.kernel.org, devel@acpica.org
Cc:     Len Brown <lenb@kernel.org>,
        Mika Westerberg <mika.westerberg@linux.intel.com>,
        Linus Walleij <linus.walleij@linaro.org>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Wolfram Sang <wsa@kernel.org>,
        Mark Gross <mgross@linux.intel.com>,
        Robert Moore <robert.moore@intel.com>,
        Erik Kaneda <erik.kaneda@intel.com>,
        laurent.pinchart@ideasonboard.com, kieran.bingham@ideasonboard.com,
        Andy Shevchenko <andy.shevchenko@gmail.com>
References: <20210603224007.120560-1-djrscally@gmail.com>
 <20210603224007.120560-7-djrscally@gmail.com>
From:   Hans de Goede <hdegoede@redhat.com>
Message-ID: <4083819a-eabf-fb2d-2ce8-5f6a409c69a0@redhat.com>
Date:   Thu, 17 Jun 2021 13:14:14 +0200
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Hi,

On 6/4/21 12:40 AM, Daniel Scally wrote:
> This driver only covered one scenario in which ACPI devices with _HID
> INT3472 are found, and its functionality has been taken over by the
> intel-skl-int3472 module, so remove it.
> 
> Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
> Acked-by: Lee Jones <lee.jones@linaro.org>
> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Signed-off-by: Daniel Scally <djrscally@gmail.com>

Thank you for your patch, I've applied this patch to my review-hans 
branch:
https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git/log/?h=review-hans

Note it will show up in my review-hans branch once I've pushed my
local branch there, which might take a while.

Once I've run some tests on this branch the patches there will be
added to the platform-drivers-x86/for-next branch and eventually
will be included in the pdx86 pull-request to Linus for the next
merge-window.

Regards,

Hans


> ---
> Changes since v4:
> 	- None
> 
>  drivers/acpi/pmic/Kconfig |  2 +-
>  drivers/gpio/Kconfig      |  2 +-
>  drivers/mfd/Kconfig       | 18 --------
>  drivers/mfd/Makefile      |  1 -
>  drivers/mfd/tps68470.c    | 97 ---------------------------------------
>  5 files changed, 2 insertions(+), 118 deletions(-)
>  delete mode 100644 drivers/mfd/tps68470.c
> 
> diff --git a/drivers/acpi/pmic/Kconfig b/drivers/acpi/pmic/Kconfig
> index 56bbcb2ce61b..f84b8f6038dc 100644
> --- a/drivers/acpi/pmic/Kconfig
> +++ b/drivers/acpi/pmic/Kconfig
> @@ -52,7 +52,7 @@ endif	# PMIC_OPREGION
>  
>  config TPS68470_PMIC_OPREGION
>  	bool "ACPI operation region support for TPS68470 PMIC"
> -	depends on MFD_TPS68470
> +	depends on INTEL_SKL_INT3472
>  	help
>  	  This config adds ACPI operation region support for TI TPS68470 PMIC.
>  	  TPS68470 device is an advanced power management unit that powers
> diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
> index 1dd0ec6727fd..10228abeee56 100644
> --- a/drivers/gpio/Kconfig
> +++ b/drivers/gpio/Kconfig
> @@ -1367,7 +1367,7 @@ config GPIO_TPS65912
>  
>  config GPIO_TPS68470
>  	bool "TPS68470 GPIO"
> -	depends on MFD_TPS68470
> +	depends on INTEL_SKL_INT3472
>  	help
>  	  Select this option to enable GPIO driver for the TPS68470
>  	  chip family.
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 5c7f2b100191..99c4e1a80ae0 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1499,24 +1499,6 @@ config MFD_TPS65217
>  	  This driver can also be built as a module.  If so, the module
>  	  will be called tps65217.
>  
> -config MFD_TPS68470
> -	bool "TI TPS68470 Power Management / LED chips"
> -	depends on ACPI && PCI && I2C=y
> -	depends on I2C_DESIGNWARE_PLATFORM=y
> -	select MFD_CORE
> -	select REGMAP_I2C
> -	help
> -	  If you say yes here you get support for the TPS68470 series of
> -	  Power Management / LED chips.
> -
> -	  These include voltage regulators, LEDs and other features
> -	  that are often used in portable devices.
> -
> -	  This option is a bool as it provides an ACPI operation
> -	  region, which must be available before any of the devices
> -	  using this are probed. This option also configures the
> -	  designware-i2c driver to be built-in, for the same reason.
> -
>  config MFD_TI_LP873X
>  	tristate "TI LP873X Power Management IC"
>  	depends on I2C
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 4f6d2b8a5f76..8b322d89a0c5 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -105,7 +105,6 @@ obj-$(CONFIG_MFD_TPS65910)	+= tps65910.o
>  obj-$(CONFIG_MFD_TPS65912)	+= tps65912-core.o
>  obj-$(CONFIG_MFD_TPS65912_I2C)	+= tps65912-i2c.o
>  obj-$(CONFIG_MFD_TPS65912_SPI)  += tps65912-spi.o
> -obj-$(CONFIG_MFD_TPS68470)	+= tps68470.o
>  obj-$(CONFIG_MFD_TPS80031)	+= tps80031.o
>  obj-$(CONFIG_MENELAUS)		+= menelaus.o
>  
> diff --git a/drivers/mfd/tps68470.c b/drivers/mfd/tps68470.c
> deleted file mode 100644
> index 4a4df4ffd18c..000000000000
> --- a/drivers/mfd/tps68470.c
> +++ /dev/null
> @@ -1,97 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0
> -/*
> - * TPS68470 chip Parent driver
> - *
> - * Copyright (C) 2017 Intel Corporation
> - *
> - * Authors:
> - *	Rajmohan Mani <rajmohan.mani@intel.com>
> - *	Tianshu Qiu <tian.shu.qiu@intel.com>
> - *	Jian Xu Zheng <jian.xu.zheng@intel.com>
> - *	Yuning Pu <yuning.pu@intel.com>
> - */
> -
> -#include <linux/acpi.h>
> -#include <linux/delay.h>
> -#include <linux/i2c.h>
> -#include <linux/init.h>
> -#include <linux/mfd/core.h>
> -#include <linux/mfd/tps68470.h>
> -#include <linux/regmap.h>
> -
> -static const struct mfd_cell tps68470s[] = {
> -	{ .name = "tps68470-gpio" },
> -	{ .name = "tps68470_pmic_opregion" },
> -};
> -
> -static const struct regmap_config tps68470_regmap_config = {
> -	.reg_bits = 8,
> -	.val_bits = 8,
> -	.max_register = TPS68470_REG_MAX,
> -};
> -
> -static int tps68470_chip_init(struct device *dev, struct regmap *regmap)
> -{
> -	unsigned int version;
> -	int ret;
> -
> -	/* Force software reset */
> -	ret = regmap_write(regmap, TPS68470_REG_RESET, TPS68470_REG_RESET_MASK);
> -	if (ret)
> -		return ret;
> -
> -	ret = regmap_read(regmap, TPS68470_REG_REVID, &version);
> -	if (ret) {
> -		dev_err(dev, "Failed to read revision register: %d\n", ret);
> -		return ret;
> -	}
> -
> -	dev_info(dev, "TPS68470 REVID: 0x%x\n", version);
> -
> -	return 0;
> -}
> -
> -static int tps68470_probe(struct i2c_client *client)
> -{
> -	struct device *dev = &client->dev;
> -	struct regmap *regmap;
> -	int ret;
> -
> -	regmap = devm_regmap_init_i2c(client, &tps68470_regmap_config);
> -	if (IS_ERR(regmap)) {
> -		dev_err(dev, "devm_regmap_init_i2c Error %ld\n",
> -			PTR_ERR(regmap));
> -		return PTR_ERR(regmap);
> -	}
> -
> -	i2c_set_clientdata(client, regmap);
> -
> -	ret = tps68470_chip_init(dev, regmap);
> -	if (ret < 0) {
> -		dev_err(dev, "TPS68470 Init Error %d\n", ret);
> -		return ret;
> -	}
> -
> -	ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, tps68470s,
> -			      ARRAY_SIZE(tps68470s), NULL, 0, NULL);
> -	if (ret < 0) {
> -		dev_err(dev, "devm_mfd_add_devices failed: %d\n", ret);
> -		return ret;
> -	}
> -
> -	return 0;
> -}
> -
> -static const struct acpi_device_id tps68470_acpi_ids[] = {
> -	{"INT3472"},
> -	{},
> -};
> -
> -static struct i2c_driver tps68470_driver = {
> -	.driver = {
> -		   .name = "tps68470",
> -		   .acpi_match_table = tps68470_acpi_ids,
> -	},
> -	.probe_new = tps68470_probe,
> -};
> -builtin_i2c_driver(tps68470_driver);
>