linux-kernel - Re: [PATCH v4 2/4] mfd: adp5585: Add Analog Devices ADP5585 core support

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Message-ID: <ZmcXvnVH6g2k8zam@surfacebook.localdomain>
Date: Mon, 10 Jun 2024 18:11:58 +0300
From: Andy Shevchenko <andy.shevchenko@...il.com>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Cc: linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	linux-gpio@...r.kernel.org, linux-pwm@...r.kernel.org,
	Bartosz Golaszewski <brgl@...ev.pl>,
	Conor Dooley <conor+dt@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Lee Jones <lee@...nel.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Uwe Kleine-König <ukleinek@...nel.org>,
	Haibo Chen <haibo.chen@....com>
Subject: Re: [PATCH v4 2/4] mfd: adp5585: Add Analog Devices ADP5585 core
 support

Sat, Jun 08, 2024 at 05:16:31PM +0300, Laurent Pinchart kirjoitti:
> From: Haibo Chen <haibo.chen@....com>
> 
> The ADP5585 is a 10/11 input/output port expander with a built in keypad
> matrix decoder, programmable logic, reset generator, and PWM generator.
> This driver supports the chip by modelling it as an MFD device, with two
> child devices for the GPIO and PWM functions.
> 
> The driver is derived from an initial implementation from NXP, available
> in commit 8059835bee19 ("MLK-25917-1 mfd: adp5585: add ADI adp5585 core
> support") in their BSP kernel tree. It has been extensively rewritten.

...

> +#include <linux/array_size.h>
> +#include <linux/device.h>

+ err.h

> +#include <linux/i2c.h>
> +#include <linux/mfd/adp5585.h>
> +#include <linux/mfd/core.h>
> +#include <linux/mod_devicetable.h>
> +#include <linux/module.h>
> +#include <linux/regmap.h>
> +#include <linux/types.h>

...

> +static const struct mfd_cell adp5585_devs[] = {
> +	{ .name = "adp5585-gpio", },
> +	{ .name = "adp5585-pwm", },

Inner commas are not needed.

> +};

...

> +#define		ADP5585_Rx_PULL_CFG_PU_300K	0
> +#define		ADP5585_Rx_PULL_CFG_PD_300K	1
> +#define		ADP5585_Rx_PULL_CFG_PU_100K	2
> +#define		ADP5585_Rx_PULL_CFG_DISABLE	3
> +#define		ADP5585_Rx_PULL_CFG_MASK	3

Still supplying MASK is strange, why not supplying DISABLE?

...

> +#define		ADP5585_OSC_EN			BIT(7)
> +#define		ADP5585_OSC_FREQ_50KHZ		(0U << 5)
> +#define		ADP5585_OSC_FREQ_100KHZ		(1U << 5)
> +#define		ADP5585_OSC_FREQ_200KHZ		(2U << 5)
> +#define		ADP5585_OSC_FREQ_500KHZ		(3U << 5)
> +#define		ADP5585_OSC_FREQ_MASK		(3U << 5)

GENMASK() ? And possible the similar question as per above.

-- 
With Best Regards,
Andy Shevchenko