Messages in this thread | | | From | YP WU <> | Subject | Re: How to use "DTV_FE_CAPABILITY" command for Frontend.h of Linux DVB | Date | Fri, 9 Jul 2021 23:47:39 +0800 |
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>From: YP WU <yp.wu@mediatek.com> >>To: <mchehab@kernel.org> >>Cc: <Jason-BF.Huang@mediatek.com>, <Lecopzer.Chen@mediatek.com>, >> <francis.lee@mediatek.com>, <gustavoars@kernel.org>, >> <hverkuil-cisco@xs4all.nl>, <leo.hsiao@mediatek.com>, >> <linux-kernel@vger.kernel.org>, <linux-media@vger.kernel.org>, >> <yp.wu@mediatek.com> >>Subject: Re: How to use "DTV_FE_CAPABILITY" command for Frontend.h of Linux DVB >>Date: Fri, 2 Jul 2021 17:28:34 +0800 >>Message-ID: <20210702092834.11699-1-yp.wu@mediatek.com> (raw) >>In-Reply-To: <20210623093312.6f9883a5@coco.lan> >> >>Hello, Mr.Mauro, >><I need to understand more about the use case. >>-> About use case, I describe below: >> >> For our design of kernel, demod/tuner and LNB are registered to different frontend device nodes. >>We want to implement property command to know if the frontend device node is LNB device or demod/tuner device. >>If it is LNB device node, the value would return true >>If it is demod/tuner device node, the value would return false. >> >>Do you have better idea or suggestion for our usage? >>Please let me know if your have better suggestion. >>Very thank you for your help. >> >>BRs, >>YP
Hello, Mr.Mauro, Frist of all, thanks for your reply. Based on previous discussion, we think we can create a new property command to achieve our goal. A new property command "DTV_FE_LNB_CAPABILITY". We can use "FE_GET_PROPERTY" with case "DTV_FE_LNB_CAPABILITY" to get LNB capability. We also should add a new variable named "LNB_capability" in dtv_frontend_properties. Like below: bool LNB_capability; If the device node is LNB, LNB_capability should set to TRUE. If the device node is demod/tuner, LNB_capability should set to FALSE.
What's your opinion? If you have a better idea or suggestion, please let me know.
Very thank you.
BRs, YP
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