Received-SPF: pass (google.com: domain of linux-kernel+bounces-169857-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
Message-ID: <01b2e468-e721-4bc5-9149-4e2292eafd42@collabora.com>
Date: Mon, 6 May 2024 14:58:32 +0200
Precedence: bulk
MIME-Version: 1.0
User-Agent: Mozilla Thunderbird
Subject: Re: [PATCH v2 3/3] drm/mediatek: Implement OF graphs support for
 display paths
To: Michael Walle <mwalle@kernel.org>, chunkuang.hu@kernel.org
Cc: robh@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
 p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch,
 maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de,
 matthias.bgg@gmail.com, shawn.sung@mediatek.com, yu-chang.lee@mediatek.com,
 ck.hu@mediatek.com, jitao.shi@mediatek.com, devicetree@vger.kernel.org,
 linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
 linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org,
 wenst@chromium.org, kernel@collabora.com
References: <20240409120211.321153-1-angelogioacchino.delregno@collabora.com>
 <20240409120211.321153-4-angelogioacchino.delregno@collabora.com>
 <D12G1NPU2H06.3LBLR19XYUAA6@kernel.org>
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Content-Language: en-US
In-Reply-To: <D12G1NPU2H06.3LBLR19XYUAA6@kernel.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit

Il 06/05/24 11:11, Michael Walle ha scritto:
> Hi Angelo,
> 
> On Tue Apr 9, 2024 at 2:02 PM CEST, AngeloGioacchino Del Regno wrote:
>> +static int mtk_drm_of_get_ddp_ep_cid(struct device_node *node,
>> +				     int output_port, enum mtk_drm_crtc_path crtc_path,
> 
> Not sure what's your base branch is, but "enum mtk_drm_crtc_path"
> was renamed to "enum mtk_crtc_path" in commit 9e149879038f5
> ('drm/mediatek: Rename "mtk_drm_crtc" to "mtk_crtc"').
> 
>> +/**
>> + * mtk_drm_of_ddp_path_build_one - Build a Display HW Pipeline for a CRTC Path
>> + * @dev:          The mediatek-drm device
>> + * @cpath:        CRTC Path relative to a VDO or MMSYS
>> + * @out_path:     Pointer to an array that will contain the new pipeline
>> + * @out_path_len: Number of entries in the pipeline array
>> + *
>> + * MediaTek SoCs can use different DDP hardware pipelines (or paths) depending
>> + * on the board-specific desired display configuration; this function walks
>> + * through all of the output endpoints starting from a VDO or MMSYS hardware
>> + * instance and builds the right pipeline as specified in device trees.
>> + *
>> + * Return:
>> + * * %0       - Display HW Pipeline successfully built and validated
>> + * * %-ENOENT - Display pipeline was not specified in device tree
>> + * * %-EINVAL - Display pipeline built but validation failed
>> + * * %-ENOMEM - Failure to allocate pipeline array to pass to the caller
>> + */
>> +static int mtk_drm_of_ddp_path_build_one(struct device *dev, enum mtk_drm_crtc_path cpath,
> 
> likewise
> 
>> +					 const unsigned int **out_path,
>> +					 unsigned int *out_path_len)
> 
> -michael

Yeah, thanks for noticing that, I'll send a new version soon.

Cheers