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Date:   Wed, 25 Jul 2018 17:13:09 +0900
From:   Inki Dae <inki.dae@samsung.com>
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To:     Andrzej Hajda <a.hajda@samsung.com>,
        Maciej Purski <m.purski@samsung.com>,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
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CC:     David Airlie <airlied@linux.ie>, Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Thierry Reding <thierry.reding@gmail.com>,
        Kukjin Kim <kgene@kernel.org>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        Archit Taneja <architt@codeaurora.org>,
        Laurent Pinchart <Laurent.pinchart@ideasonboard.com>,
        Joonyoung Shim <jy0922.shim@samsung.com>,
        Seung-Woo Kim <sw0312.kim@samsung.com>,
        Kyungmin Park <kyungmin.park@samsung.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Subject: Re: [PATCH v3 1/9] drm/exynos: rename "bridge_node" to
 "mic_bridge_node"
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2018년 07월 25일 17:11에 Andrzej Hajda 이(가) 쓴 글:
> On 24.07.2018 09:49, Inki Dae wrote:
>> Hi,
>>
>> 2018년 06월 19일 17:19에 Maciej Purski 이(가) 쓴 글:
>>> When adding support for peripheral out bridges, the "bridge" name
>>> becomes imprecise as it refers to a different device than the
>>> "out_bridge".
>> Could you give me more details? I'm afriad that I don't understand what you say.
> 
> The problem is that MIC is an input bridge and now we will have also
> output bridge (Toshiba DSI/LVDS converter).
> So we will have to distinguish them.
> 
>>
>> And in case of Exynos5433 SoC, SMIES(Samsung Mobile Image Enhancement System) can be located between DECON and MIPI-DSI devices also.
>> Therefore, having specific name isn't reasonable.
> 
> So probably in_bridge would be a better name. I will rephrase message
> and bridge name.

Good idea. :)

Thanks,
Inki Dae

> 
> Regars
> Andrzej
> 
> 
>>
>> Thanks,
>> Inki Dae
>>
>>> Signed-off-by: Maciej Purski <m.purski@samsung.com>
>>> ---
>>>  drivers/gpu/drm/exynos/exynos_drm_dsi.c | 16 ++++++++--------
>>>  1 file changed, 8 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
>>> index eae44fd..9599e6b 100644
>>> --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c
>>> +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c
>>> @@ -279,7 +279,7 @@ struct exynos_dsi {
>>>  	struct list_head transfer_list;
>>>  
>>>  	const struct exynos_dsi_driver_data *driver_data;
>>> -	struct device_node *bridge_node;
>>> +	struct device_node *mic_bridge_node;
>>>  };
>>>  
>>>  #define host_to_dsi(host) container_of(host, struct exynos_dsi, dsi_host)
>>> @@ -1631,7 +1631,7 @@ static int exynos_dsi_parse_dt(struct exynos_dsi *dsi)
>>>  	if (ret < 0)
>>>  		return ret;
>>>  
>>> -	dsi->bridge_node = of_graph_get_remote_node(node, DSI_PORT_IN, 0);
>>> +	dsi->mic_bridge_node = of_graph_get_remote_node(node, DSI_PORT_IN, 0);
>>>  
>>>  	return 0;
>>>  }
>>> @@ -1642,7 +1642,7 @@ static int exynos_dsi_bind(struct device *dev, struct device *master,
>>>  	struct drm_encoder *encoder = dev_get_drvdata(dev);
>>>  	struct exynos_dsi *dsi = encoder_to_dsi(encoder);
>>>  	struct drm_device *drm_dev = data;
>>> -	struct drm_bridge *bridge;
>>> +	struct drm_bridge *mic_bridge;
>>>  	int ret;
>>>  
>>>  	drm_encoder_init(drm_dev, encoder, &exynos_dsi_encoder_funcs,
>>> @@ -1661,10 +1661,10 @@ static int exynos_dsi_bind(struct device *dev, struct device *master,
>>>  		return ret;
>>>  	}
>>>  
>>> -	if (dsi->bridge_node) {
>>> -		bridge = of_drm_find_bridge(dsi->bridge_node);
>>> -		if (bridge)
>>> -			drm_bridge_attach(encoder, bridge, NULL);
>>> +	if (dsi->mic_bridge_node) {
>>> +		mic_bridge = of_drm_find_bridge(dsi->mic_bridge_node);
>>> +		if (mic_bridge)
>>> +			drm_bridge_attach(encoder, mic_bridge, NULL);
>>>  	}
>>>  
>>>  	return mipi_dsi_host_register(&dsi->dsi_host);
>>> @@ -1783,7 +1783,7 @@ static int exynos_dsi_remove(struct platform_device *pdev)
>>>  {
>>>  	struct exynos_dsi *dsi = platform_get_drvdata(pdev);
>>>  
>>> -	of_node_put(dsi->bridge_node);
>>> +	of_node_put(dsi->mic_bridge_node);
>>>  
>>>  	pm_runtime_disable(&pdev->dev);
>>>  
>>>
>> --
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>>
> 
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