Re: [PATCH v7 13/13] video: backlight: mt6370: Add MediaTek MT6370 support

From: Andy Shevchenko <andy.shevchenko@gmail.com>
To: ChiaEn Wu <peterwu.pub@gmail.com>
Cc: Lee Jones <lee.jones@linaro.org>,
	Daniel Thompson <daniel.thompson@linaro.org>,
	Jingoo Han <jingoohan1@gmail.com>, Pavel Machek <pavel@ucw.cz>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Sebastian Reichel <sre@kernel.org>,
	Chunfeng Yun <chunfeng.yun@mediatek.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jonathan Cameron <jic23@kernel.org>,
	Lars-Peter Clausen <lars@metafoo.de>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>,
	Guenter Roeck <linux@roeck-us.net>,
	"Krogerus, Heikki" <heikki.krogerus@linux.intel.com>,
	Helge Deller <deller@gmx.de>, ChiaEn Wu <chiaen_wu@richtek.com>,
	Alice Chen <alice_chen@richtek.com>,
	cy_huang <cy_huang@richtek.com>,
	dri-devel <dri-devel@lists.freedesktop.org>,
	Linux LED Subsystem <linux-leds@vger.kernel.org>,
	devicetree <devicetree@vger.kernel.org>,
	linux-arm Mailing List <linux-arm-kernel@lists.infradead.org>,
	"moderated list:ARM/Mediatek SoC support" 
	<linux-mediatek@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Linux PM <linux-pm@vger.kernel.org>,
	USB <linux-usb@vger.kernel.org>,
	linux-iio <linux-iio@vger.kernel.org>,
	"open list:FRAMEBUFFER LAYER" <linux-fbdev@vger.kernel.org>,
	szuni chen <szunichen@gmail.com>
Subject: Re: [PATCH v7 13/13] video: backlight: mt6370: Add MediaTek MT6370 support
Date: Fri, 5 Aug 2022 15:06:19 +0200	[thread overview]
Message-ID: <CAHp75VfiYNzmcPN8LNqvU0jKuWVFR3ODY3iWaJwpDxUdSORTOg@mail.gmail.com> (raw)
In-Reply-To: <20220805070610.3516-14-peterwu.pub@gmail.com>

On Fri, Aug 5, 2022 at 9:08 AM ChiaEn Wu <peterwu.pub@gmail.com> wrote:
>
> From: ChiaEn Wu <chiaen_wu@richtek.com>
>
> MediaTek MT6370 is a SubPMIC consisting of a single cell battery charger
> with ADC monitoring, RGB LEDs, dual channel flashlight, WLED backlight
> driver, display bias voltage supply, one general purpose LDO, and the
> USB Type-C & PD controller complies with the latest USB Type-C and PD
> standards.
>
> Add a support for the MediaTek MT6370 backlight driver.
> It controls 4 channels of 8 series WLEDs in
> 2048 (only for MT6370/MT6371) / 16384 (only for MT6372)
> current steps (30 mA) in exponential or linear mapping curves.

...

> +#include <linux/backlight.h>
> +#include <linux/bitfield.h>
> +#include <linux/bits.h>
> +#include <linux/gpio/consumer.h>
> +#include <linux/kernel.h>
> +#include <linux/minmax.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/module.h>

> +#include <linux/of_device.h>

Why? Since below drop this and use fully fwnode / device property APIs.

> +#include <linux/platform_device.h>

Missed property.h which is heavily used in.the driver

> +#include <linux/regmap.h>

...

> +       /*
> +        * MT6372 uses 14 bits to control the brightness but MT6370 and MT6371
> +        * use 11 bits. They are different so we have to use this function to
> +        * check the vendor ID and use different mask, shift and default
> +        * maxiimum brightness value.

Use spell-checker for all your patches.

> +        */

-- 
With Best Regards,
Andy Shevchenko