>From: YP WU <yp.wu@xxxxxxxxxxxx> >>To: <mchehab@xxxxxxxxxx> >>Cc: <Jason-BF.Huang@xxxxxxxxxxxx>, <Lecopzer.Chen@xxxxxxxxxxxx>, >> <francis.lee@xxxxxxxxxxxx>, <gustavoars@xxxxxxxxxx>, >> <hverkuil-cisco@xxxxxxxxx>, <leo.hsiao@xxxxxxxxxxxx>, >> <linux-kernel@xxxxxxxxxxxxxxx>, <linux-media@xxxxxxxxxxxxxxx>, >> <yp.wu@xxxxxxxxxxxx> >>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@xxxxxxxxxxxx> (raw) >>In-Reply-To: <20210623093312.6f9883a5@xxxxxxxx> >> >>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
