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[23.128.96.18]) by mx.google.com with ESMTP id hp23si5885915ejc.205.2021.05.21.15.30.50; Fri, 21 May 2021 15:31:13 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@mg.codeaurora.org header.s=smtp header.b=g1pexXEL; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230149AbhEUW3L (ORCPT + 99 others); Fri, 21 May 2021 18:29:11 -0400 Received: from so254-9.mailgun.net ([198.61.254.9]:45834 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229526AbhEUW3J (ORCPT ); Fri, 21 May 2021 18:29:09 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1621636065; h=Message-ID: References: In-Reply-To: Subject: Cc: To: From: Date: Content-Transfer-Encoding: Content-Type: MIME-Version: Sender; bh=sAUYM5V3gq+ufKbiwhke5LyxwcnPMFHcCcu9hhiqJwI=; b=g1pexXELdFa0g60nVwb3OBUbQOElGdGPakj3s2Z48tvHZ25Iqj72JKb+vTjLk4PTctc2sgs1 OMVe4/Zct3LJnQVXjSK2OzxHV7g7Ox0sEbq5ym04A77QAhC/CdMkyJuPpaYYR76SGumxVvfG ZzH6N+qK7GZQIXKGllWvAwTHxwY= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI0MWYwYSIsICJsaW51eC1rZXJuZWxAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-west-2.postgun.com with SMTP id 60a833d52bff04e53b037e8d (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 21 May 2021 22:27:33 GMT Sender: khsieh=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 25471C4323A; Fri, 21 May 2021 22:27:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=ALL_TRUSTED,BAYES_00, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.codeaurora.org (localhost.localdomain [127.0.0.1]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: khsieh) by smtp.codeaurora.org (Postfix) with ESMTPSA id 0C921C433D3; Fri, 21 May 2021 22:27:31 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Date: Fri, 21 May 2021 15:27:31 -0700 From: khsieh@codeaurora.org To: Stephen Boyd Cc: agross@kernel.org, bjorn.andersson@linaro.org, robdclark@gmail.com, sean@poorly.run, vkoul@kernel.org, abhinavk@codeaurora.org, aravindh@codeaurora.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 1/2] drm/msm/dp: handle irq_hpd with sink_count = 0 correctly In-Reply-To: References: <1621455753-28966-1-git-send-email-khsieh@codeaurora.org> Message-ID: <955c69a5fe7bfee9380faf3d2b71a728@codeaurora.org> X-Sender: khsieh@codeaurora.org User-Agent: Roundcube Webmail/1.3.9 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2021-05-21 14:56, Stephen Boyd wrote: > Quoting Kuogee Hsieh (2021-05-19 13:22:33) >> irq_hpd interrupt should be handled after dongle plugged in and >> before dongle unplugged. Hence irq_hpd interrupt is enabled at >> the end of the plugin handle and disabled at the beginning of >> unplugged handle. Current irq_hpd with sink_count = 0 is wrongly >> handled same as the dongle unplugged which tears down the mainlink >> and disables the phy. This patch fixes this problem by only tearing >> down the mainlink but keeping phy enabled at irq_hpd with >> sink_count = 0 handle so that next irq_hpd with sink_count =1 can be >> handled by setup mainlink only. This patch also set dongle into D3 >> (power off) state at end of handling irq_hpd with sink_count = 0. >> >> Changes in v2: >> -- add ctrl->phy_Power_count >> >> Changes in v3: >> -- del ctrl->phy_Power_count >> -- add phy_power_off to dp_ctrl_off_link_stream() >> >> Changes in v4: >> -- return immediately if clock disable failed at >> dp_ctrl_off_link_stream() >> >> Changes in v5: >> -- set dongle to D3 (power off) state at dp_ctrl_off_link_stream() >> >> Changes in v6: >> -- add Fixes tag >> >> Fixes: 94e58e2d06e3 ("drm/msm/dp: reset dp controller only at boot up >> and pm_resume") >> >> Signed-off-by: Kuogee Hsieh >> --- > > Tested-by: Stephen Boyd > Reviewed-by: Stephen Boyd > > We can resolve the lingering dual irq issue later on if you don't want > to send another round of this. Also, the title says 1/2 so I wonder if > there's another patch? Doesn't look like there is but I have to ask. If > not, please generate patches with the right - argument or revision > range. new v6 uploaded