linux-kernel - Re: [PATCH v4 11/16] drm: bridge: analogix/dp: add platform device type support

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Message-id: <55ECD28B.40703@samsung.com>
Date:	Mon, 07 Sep 2015 08:55:55 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Yakir Yang <ykk@...k-chips.com>, Heiko Stuebner <heiko@...ech.de>,
	Thierry Reding <treding@...dia.com>,
	Jingoo Han <jingoohan1@...il.com>,
	Inki Dae <inki.dae@...sung.com>, joe@...ches.com,
	Kukjin Kim <kgene@...nel.org>,
	Mark Yao <mark.yao@...k-chips.com>
Cc:	Russell King <rmk+kernel@....linux.org.uk>, djkurtz@...omium.com,
	dianders@...omium.com, seanpaul@...omium.com, ajaynumb@...il.com,
	Andrzej Hajda <a.hajda@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	David Airlie <airlied@...ux.ie>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>,
	Andy Yan <andy.yan@...k-chips.com>,
	Kumar Gala <galak@...eaurora.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Kishon Vijay Abraham I <kishon@...com>,
	architt@...eaurora.org, robherring2@...il.com,
	dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	linux-rockchip@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 11/16] drm: bridge: analogix/dp: add platform device
 type support

On 06.09.2015 13:07, Yakir Yang wrote:
> Hi Krzysztof,
> 
> 在 09/04/2015 08:36 AM, Krzysztof Kozlowski 写道:
>> On 01.09.2015 15:07, Yakir Yang wrote:
>>
>> Empty commit message. Please explain here why you want to add platform
>> device type support.
>>
>> Actually the title is confusing. You are not adding support for platform
>> device types but rather adding a field containing type of device.
>>
>>
>>> Signed-off-by: Yakir Yang <ykk@...k-chips.com>
>>> ---
>>> Changes in v4: None
>>> Changes in v3: None
>>> Changes in v2:
>>> - Add GNU license v2 declared and samsung copyright
>>>
>>>   drivers/gpu/drm/exynos/exynos_dp.c              |  1 +
>>>   drivers/gpu/drm/rockchip/analogix_dp-rockchip.c |  1 +
>>>   include/drm/bridge/analogix_dp.h                | 16 ++++++++++++++++
>>>   3 files changed, 18 insertions(+)
>>>
>>> diff --git a/drivers/gpu/drm/exynos/exynos_dp.c
>>> b/drivers/gpu/drm/exynos/exynos_dp.c
>>> index 6060d2c..40ef727 100644
>>> --- a/drivers/gpu/drm/exynos/exynos_dp.c
>>> +++ b/drivers/gpu/drm/exynos/exynos_dp.c
>>> @@ -224,6 +224,7 @@ static int exynos_dp_bind(struct device *dev,
>>> struct device *master, void *data)
>>>       dp->dev = dev;
>>>       dp->drm_dev = drm_dev;
>>>   +    dp->plat_data.dev_type = EXYNOS_DP;
>>>       dp->plat_data.power_on = exynos_dp_poweron;
>>>       dp->plat_data.power_off = exynos_dp_poweroff;
>>>       dp->plat_data.get_modes = exynos_dp_get_modes;
>>> diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
>>> b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
>>> index efea045..4934271 100644
>>> --- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
>>> +++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
>>> @@ -293,6 +293,7 @@ static int rockchip_dp_bind(struct device *dev,
>>> struct device *master,
>>>           return ret;
>>>       }
>>>   +    dp->plat_data.dev_type = RK3288_DP;
>>>       dp->plat_data.attach = NULL;
>>>       dp->plat_data.get_modes = NULL;
>>>       dp->plat_data.power_on = rockchip_dp_poweron;
>>> diff --git a/include/drm/bridge/analogix_dp.h
>>> b/include/drm/bridge/analogix_dp.h
>>> index 8b4ffad..7209a64 100644
>>> --- a/include/drm/bridge/analogix_dp.h
>>> +++ b/include/drm/bridge/analogix_dp.h
>>> @@ -1,9 +1,25 @@
>>> +/*
>>> + * Analogix Core DP (Display Port) interface driver.
>>> + *
>>> + * Copyright (C) 2012 Samsung Electronics Co., Ltd.
>>> + *
>>> + * This program is free software; you can redistribute it and/or
>>> modify it
>>> + * under the terms of the GNU General Public License as published by
>>> the
>>> + * Free Software Foundation; either version 2 of the License, or (at
>>> your
>>> + * option) any later version.
>>> + */
>> Two questions:
>> 1. Why this change is here? I would rather expect it at patch 3/16 when
>> you created this file... That is the usual time for adding copyrights.
> 
> Yep, I should move this to 03/16.
> 
>> 2. Does this file contains previous Samsung work?
> 
> Hmm... I think this haven't contains the previous Samsung works,
> but I have the cover the head message from analogix_dp_core driver
> (include the copyright, but without ant author).

If it does not contain Samsung's work then don't mention its copyrights.

Best regards,
Krzysztof

> 
> Thanks
> - Yakir
> 
>> Best regards,
>> Krzysztof
>>
>>>   #ifndef _ANALOGIX_DP_H_
>>>   #define _ANALOGIX_DP_H_
>>>     #include <drm/drm_crtc.h>
>>>   +enum analogix_dp_devtype {
>>> +    EXYNOS_DP,
>>> +    RK3288_DP,
>>> +};
>>> +
>>>   struct analogix_dp_plat_data {
>>> +    enum analogix_dp_devtype dev_type;
>>>       struct drm_panel *panel;
>>>         int (*power_on)(struct analogix_dp_plat_data *);
>>>
>>
>>
>>
> 
> 
> 

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