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Message-id: <194162595.571031444032234245.JavaMail.weblogic@epmlwas07a>
Date:	Mon, 05 Oct 2015 08:03:54 +0000 (GMT)
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	최찬우 <cw00.choi@...sung.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Cc:	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	"galak@...eaurora.org" <galak@...eaurora.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2] extcon: gpio: Add the support for Device tree bindings

>   
>  This patch adds the support for Device tree bindings of extcon-gpio driver.
> The extcon-gpio device tree node must include the both 'extcon-id' and
> 'extcon-gpio' property.
> 
[]
> 
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>


Except for some beautification issues described below,

Signed-off-by: MyungJoo Ham <myungjoo.ham@...sung.com>

> ---
> This patch is based on following patch[1].
> [1] https://lkml.org/lkml/2015/10/3/304
> 
> Changes from v1:
> - Create the include/dt-bindings/extcon/extcon.h including the identification
>   of external connector. These definitions are used in dts file.
> - Fix error if CONFIG_OF is disabled.
> 
>  .../devicetree/bindings/extcon/extcon-gpio.txt     |  38 +++++++
>  drivers/extcon/extcon-gpio.c                       | 110 ++++++++++++++++-----
>  include/dt-bindings/extcon/extcon.h                |  44 +++++++++
>  include/linux/extcon/extcon-gpio.h                 |   6 +-
>  4 files changed, 173 insertions(+), 25 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/extcon/extcon-gpio.txt
>  create mode 100644 include/dt-bindings/extcon/extcon.h
> 
> diff --git a/Documentation/devicetree/bindings/extcon/extcon-gpio.txt b/Documentation/devicetree/bindings/extcon/extcon-gpio.txt
> new file mode 100644
> index 000000000000..70c36f729963
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/extcon/extcon-gpio.txt
[]
> diff --git a/drivers/extcon/extcon-gpio.c b/drivers/extcon/extcon-gpio.c
> index 279ff8f6637d..7f3e24aae0c4 100644
> --- a/drivers/extcon/extcon-gpio.c
> +++ b/drivers/extcon/extcon-gpio.c
> @@ -1,8 +1,8 @@
>  /*
>   * extcon_gpio.c - Single-state GPIO extcon driver based on extcon class
>   *
> - * Copyright (C) 2008 Google, Inc.
> - * Author: Mike Lockwood <lockwood@...roid.com>
> + * Copyright (C) 2015 Chanwoo Choi <cw00.choi@...sung.com>, Samsung Electronics
> + * Copyright (C) 2008 Mike Lockwood <lockwood@...roid.com>, Google, Inc.
>   *
>   * Modified by MyungJoo Ham <myungjoo.ham@...sung.com> to support extcon
>   * (originally switch class is supported)

Let's make it in chronological order.
(may need to "beautify the last two lines as well)

I.e., 2008-->2012-->2015 or 2015-->2012-->2008.
Not 2015-->2008-->2012


> @@ -26,12 +26,14 @@
[]
> diff --git a/include/dt-bindings/extcon/extcon.h b/include/dt-bindings/extcon/extcon.h
> new file mode 100644
> index 000000000000..14c7f36b2206
> --- /dev/null
> +++ b/include/dt-bindings/extcon/extcon.h
[]
> diff --git a/include/linux/extcon/extcon-gpio.h b/include/linux/extcon/extcon-gpio.h
> index 7cacafb78b09..bcc6d7f7116a 100644
> --- a/include/linux/extcon/extcon-gpio.h
> +++ b/include/linux/extcon/extcon-gpio.h
[]
> @@ -38,7 +38,7 @@ struct gpio_extcon_pdata {
>  	unsigned int extcon_id;
>  	unsigned gpio;
>  	bool gpio_active_low;
> -	unsigned long debounce;
> +	unsigned int debounce;

What about u32, making it more clear?
( > +	device_property_read_u32(dev, "debounce-ms", &pdata->debounce); )

>  	unsigned long irq_flags;
>  
>  	bool check_on_resume;
> -- 
> 1.8.0

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