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Message-ID: <CAG3jFysgEC9N1CE1UT4fAgp=ad_89cD7r0=7tD8vF9GvyXCS0A@mail.gmail.com>
Date:   Thu, 8 Apr 2021 10:30:21 +0200
From:   Robert Foss <robert.foss@...aro.org>
To:     Zhang Jianhua <zhangjianhua18@...wei.com>
Cc:     Adrien Grassein <adrien.grassein@...il.com>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        johnny.chenyi@...wei.com, heying24@...wei.com
Subject: Re: [PATCH -next v2] drm/bridge: lt8912b: Add header file <linux/gpio/consumer.h>

Hey Zhang,


On Thu, 8 Apr 2021 at 05:54, Zhang Jianhua <zhangjianhua18@...wei.com> wrote:
>
> If CONFIG_DRM_LONTIUM_LT8912B=m, the following errors will be seen while
> compiling lontium-lt8912b.c
>
> drivers/gpu/drm/bridge/lontium-lt8912b.c: In function
> ‘lt8912_hard_power_on’:
> drivers/gpu/drm/bridge/lontium-lt8912b.c:252:2: error: implicit
> declaration of function ‘gpiod_set_value_cansleep’; did you mean
> ‘gpio_set_value_cansleep’? [-Werror=implicit-function-declaration]
>   gpiod_set_value_cansleep(lt->gp_reset, 0);
>   ^~~~~~~~~~~~~~~~~~~~~~~~
>   gpio_set_value_cansleep
> drivers/gpu/drm/bridge/lontium-lt8912b.c: In function ‘lt8912_parse_dt’:
> drivers/gpu/drm/bridge/lontium-lt8912b.c:628:13: error: implicit
> declaration of function ‘devm_gpiod_get_optional’; did you mean
> ‘devm_gpio_request_one’? [-Werror=implicit-function-declaration]
>   gp_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
>              ^~~~~~~~~~~~~~~~~~~~~~~
>              devm_gpio_request_one
> drivers/gpu/drm/bridge/lontium-lt8912b.c:628:51: error: ‘GPIOD_OUT_HIGH’
> undeclared (first use in this function); did you mean ‘GPIOF_INIT_HIGH’?
>   gp_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
>                                                    ^~~~~~~~~~~~~~
>                                                    GPIOF_INIT_HIGH
>
> Signed-off-by: Zhang Jianhua <zhangjianhua18@...wei.com>
> ---
> v2:
> - add header file <linux/gpio/consumer.h> for lontium-lt8912b.c instead
>   of add config dependence for CONFIG_DRM_LONTIUM_LT8912B
> ---
>  drivers/gpu/drm/bridge/lontium-lt8912b.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/bridge/lontium-lt8912b.c b/drivers/gpu/drm/bridge/lontium-lt8912b.c
> index 61491615bad0..79845b3b19e1 100644
> --- a/drivers/gpu/drm/bridge/lontium-lt8912b.c
> +++ b/drivers/gpu/drm/bridge/lontium-lt8912b.c
> @@ -3,6 +3,7 @@
>   * Copyright (c) 2018, The Linux Foundation. All rights reserved.
>   */
>
> +#include <linux/gpio/consumer.h>
>  #include <linux/device.h>
>  #include <linux/delay.h>
>  #include <linux/i2c.h>

Add this #include in alphabetical order. With this change, feel free
to add my r-b.

Reviewed-by: Robert Foss <robert.foss@...aro.org>

> --
> 2.17.1
>

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