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=-5.3 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham 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 A9925C64EAD for ; Tue, 9 Oct 2018 13:07:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7B0C6213A2 for ; Tue, 9 Oct 2018 13:07:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7B0C6213A2 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=makrotopia.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-wireless-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726795AbeJIUYT (ORCPT ); Tue, 9 Oct 2018 16:24:19 -0400 Received: from fudo.makrotopia.org ([185.142.180.71]:34594 "EHLO fudo.makrotopia.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726418AbeJIUYT (ORCPT ); Tue, 9 Oct 2018 16:24:19 -0400 Received: from local by fudo.makrotopia.org with esmtpsa (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.90_1) (envelope-from ) id 1g9rjQ-0002wx-M9; Tue, 09 Oct 2018 15:07:25 +0200 Date: Tue, 9 Oct 2018 15:07:15 +0200 From: Daniel Golle To: Stanislaw Gruszka Cc: linux-wireless@vger.kernel.org, Mathias Kresin , Felix Fietkau , Tomislav =?utf-8?Q?Po=C5=BEega?= Subject: Re: [PATCH v3 2/4] rt2x00: remove confusing AGC register Message-ID: <20181009130713.GC2458@makrotopia.org> References: <1539086170-32528-1-git-send-email-sgruszka@redhat.com> <1539086170-32528-2-git-send-email-sgruszka@redhat.com> <20181009122720.GB2458@makrotopia.org> <20181009124747.GA31203@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20181009124747.GA31203@redhat.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org On Tue, Oct 09, 2018 at 02:47:48PM +0200, Stanislaw Gruszka wrote: > Hi > > On Tue, Oct 09, 2018 at 02:27:22PM +0200, Daniel Golle wrote: > > On Tue, Oct 09, 2018 at 01:56:08PM +0200, Gruszka wrote: > > > Register 66 was causing issues on RT6352 if set to the same value as > > > in MTK driver. With 1c reg value device was working fine in both HT20 > > > and HT40 modes. > > > > My guess is that this may change once we add proper TSSI which involes > > parts of AGC init as well. I suggest to add a comment in the code to > > reflect that. > > I don't understand what you suggest, could you be more specific ? simply add these lines: /* * Despite the vendor driver using different values here, use 0x1c * for now. This may have to be changed once TSSI got implemented */ > > > > diff --git a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c > > > index 1a2bf6c49b82..3a04eaef8511 100644 > > > --- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c > > > +++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c > > > @@ -3981,11 +3981,7 @@ static void rt2800_config_channel(struct rt2x00_dev *rt2x00dev, > > > rt2800_bbp_write(rt2x00dev, 196, reg); > > > > > > /* AGC init */ > > > - if (rt2x00_rt(rt2x00dev, RT6352)) > > > - reg = 0x04; > > > - else > > > - reg = rf->channel <= 14 ? 0x1c : 0x24; > > > - > > > + reg = rf->channel <= 14 ? 0x1c : 0x24; > > > reg += 2 * rt2x00dev->lna_gain; > > > > We can summerize the two lines into > > reg = 0x1c + (2 * rt2x00dev->lna_gain); > > which is also what is was before introducing support for MT7620. > > I think you mean > > reg = (rf->channel <= 14 ? 0x1c : 0x24) + 2 * rt2x00dev->lna_gain; > > to do not break 5GHz support for RT5592. I can change that in > separate patch, since this one in not technically wrong. > > Thanks > Stanislaw >