From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7EB9EC2D0A8 for ; Sat, 26 Sep 2020 08:23:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 329F8208A9 for ; Sat, 26 Sep 2020 08:23:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="p0fP8vOr" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726311AbgIZIXA (ORCPT ); Sat, 26 Sep 2020 04:23:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50390 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726037AbgIZIXA (ORCPT ); Sat, 26 Sep 2020 04:23:00 -0400 Received: from mail-lj1-x232.google.com (mail-lj1-x232.google.com [IPv6:2a00:1450:4864:20::232]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 222F0C0613CE for ; Sat, 26 Sep 2020 01:23:00 -0700 (PDT) Received: by mail-lj1-x232.google.com with SMTP id a22so4301918ljp.13 for ; Sat, 26 Sep 2020 01:22:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to:cc; bh=4Aqt4e1Ash+FISMrFbqexVvfkrdj0VgVC3AKeET4JHs=; b=p0fP8vOracuL5OeXwAy+rgY5Mdol42CUH30gqxiPx7w6q6xyDlDKrGLFcVeGShmnb3 IGFMbRbiqjLlAFotoqrVCzAKcdzNQXdg1Lwr+u1mpONrzTCrqYCzTyj9fjafdUcAnNum lBErAkbaLL2sRGxikcUp0yD0T3YXmZtey7X8/wN/tuZKlrvFK3UMsPx35NtxbRbIuukb F/A3RPvqjXzEBHq3TXZ0dTfcp9LRBCWNSRQzlZg/UHGMvRFsMGdDIwqjzAqRKiCrrVit JUYJ/1A1IraFZRD3uAD+ZUZxa+4qQMVx/qX2j4K1qmUdX5YzWLUZS81Y4cxSRGIvCaNW Oarw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to:cc; bh=4Aqt4e1Ash+FISMrFbqexVvfkrdj0VgVC3AKeET4JHs=; b=gDH5iqqKTZpA27MlR8ahQM67n7FsrIP1vZFHrHaT3atO8y5mUL/DkURtDAB90+G/mV ruaH35fQP6+GFT7G/IpxX/yN0i8Via1KqjS5O1q2ZT/fB4HM3R9/KIZLm2xMsRQ0lY4K A+hULGB7AdTsVvSUjKoYjIBI8cRt1Bkk+pMQtFyCXIm5hmGp4SkpHBG0rmqSG6ySHFCM HwBOHRDNSrFTwOE54B+sKWlAsj42ULOba5vYzI52KjmnOvLRg1exrVViNzGyiSZ3Tus3 ZzYnPiGGCAEb04ej6iq2FUCNeSIUHpdBE7SAJuEDU8DTG1YfDNCugTCNblMaA4DHgoW8 O5fg== X-Gm-Message-State: AOAM533T3xAPOC0yntNovem6WD6H910d1Ar4tlO1UMwMGIY7e0Uci1e6 Dms+d1SF0JTZZlrMn93m4umA5kXDCt4+yys77Hc= X-Google-Smtp-Source: ABdhPJxgtHLqM3GxzuQZ20nibpSVIIcXLFPBvQJLUGD8MZxQR8MgX691rGfnV2ycSPXoE/+UFZMTSLbtCWaMKhOQC/E= X-Received: by 2002:a2e:8846:: with SMTP id z6mr2254889ljj.457.1601108577486; Sat, 26 Sep 2020 01:22:57 -0700 (PDT) MIME-Version: 1.0 From: Michael Zimmermann Date: Sat, 26 Sep 2020 10:22:46 +0200 Message-ID: Subject: ITE8708 on ASUS PN50 uses a 16 byte io region To: Sean Young Cc: linux-media@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Hi, here's the resource descriptor from my DSDT: Name (BUF0, ResourceTemplate () { IO (Decode16, 0x0000, // Range Minimum 0x0000, // Range Maximum 0x01, // Alignment 0x10, // Length _Y1A) IRQNoFlags (_Y1B) {} DMA (Compatibility, NotBusMaster, Transfer8, ) {} }) As you can see it uses 16 bytes for the IO region while the driver drivers/media/rc/ite-cir.c expects 8. I don't see any obvious reason why they do that since they only seem to write two words in there, and if I edit the DSDT to change the length from 0x10 to 0x8 the linux driver detects the device properly it works just fine. So is this a bug on ASUS' side or should we just accept longer regions for the same device type? Thanks Michael