linux-kernel - Re: [PATCH 1/3] mfd: Add support for Cherry Trail Dollar Cove TI PMIC

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Date:   Tue, 22 Aug 2017 12:37:45 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Takashi Iwai <tiwai@...e.de>, linux-kernel@...r.kernel.org
Cc:     Lee Jones <lee.jones@...aro.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Johannes Stezenbach <js@...21.net>,
        linux-input@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH 1/3] mfd: Add support for Cherry Trail Dollar Cove TI
 PMIC

On Tue, 2017-08-22 at 07:57 +0200, Takashi Iwai wrote:
> This patch adds the MFD driver for Dollar Cove TI PMIC (ACPI INT33F5)
> that is found on some Intel Cherry Trail devices.
> The driver is based on the original work by Intel, found at:
>   https://github.com/01org/ProductionKernelQuilts
> 
> This is a minimal version for adding the basic resources.  Currently,
> only ACPI PMIC opregion and the external power-button are used.

Overall looks good. Few comments below.

I hope Hans de Goede had been involved somehow to this. He did enormous
work to examine all this PMIC/ACPI/I2C stuff on CHT platforms.

> +#include <linux/module.h>
> +#include <linux/mfd/core.h>
> +#include <linux/i2c.h>
> +#include <linux/interrupt.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/acpi.h>
> +#include <linux/regmap.h>
> +#include <linux/mfd/intel_soc_pmic.h>

Alphabetical order?

> +static const struct i2c_device_id dc_ti_i2c_id[] = {
> +	{ }
> +};

No need anymore. Moreover, you already are using ->probe_new().


> +static struct i2c_driver dc_ti_i2c_driver = {
> +	.driver = {
> +		.name = KBUILD_MODNAME,
> +		.pm = &dc_ti_pm_ops,
> +		.acpi_match_table = ACPI_PTR(dc_ti_acpi_ids),

ACPI_PTR is redundant here, driver is solely for ACPI case.

> +	},
> +	.probe_new = dc_ti_probe,
> +	.shutdown = dc_ti_shutdown,
> +	.id_table = dc_ti_i2c_id,
> +};

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy