From patchwork Wed Jun 1 20:53:22 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Deucher X-Patchwork-Id: 9148123 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EACE760761 for ; Wed, 1 Jun 2016 20:53:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DF122200F4 for ; Wed, 1 Jun 2016 20:53:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D4217268AE; Wed, 1 Jun 2016 20:53:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.3 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_MED, RCVD_IN_SORBS_WEB, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9F576200F4 for ; Wed, 1 Jun 2016 20:53:57 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 08D3B6EA43; Wed, 1 Jun 2016 20:53:50 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-io0-x241.google.com (mail-io0-x241.google.com [IPv6:2607:f8b0:4001:c06::241]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2492F6E282 for ; Wed, 1 Jun 2016 20:53:42 +0000 (UTC) Received: by mail-io0-x241.google.com with SMTP id m17so4073567ioi.3 for ; Wed, 01 Jun 2016 13:53:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=UuMSFI3W+ATvDX8uW7mUDVwt9cpid3AxEdZv2LMkRrg=; b=cK1KwltWkZm15eJ/Wbr0ysjTncXRAwSFmG1JpR116jFJ0Ats8N5SJf3Vlu5UR+Qm9A AzGtG0LoCHhoRDD1QkMTfIoFx/vTjNX4wTYUTVcAVy60NeomHhVkjr5veU+s2lCNmfvy CaHTgNMe+kFc7119euvl0gJvPGvaC4RK0E4ZSOSggqcgQuH+dRAq0gM1IpnN0DD4QbFZ m1NMNrF0ScKfaqd1dUzhrdOE9WHJrGLaHK0dTeQ40asZPU/ojh9rm/NNc8ZMUq4aBzte LpM+rx57gH34MEyH/jkts+PSirNI0aA0iA02YHe2vUxGC9TLmKVfxmgBRQaErMKLui/W zSqg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=UuMSFI3W+ATvDX8uW7mUDVwt9cpid3AxEdZv2LMkRrg=; b=BtgT3p7a7haTpOv9DvcB+bDXhEcyM9vb6Je4ULurP94Gji3hB6Gkggx9cf3mnQkYTO C9Xi/LSzmEe5tiF0NJvCwYI0AM6z5/OSAaMl52U66bxCZ7yZpdf8I0o5vJBWqRZSPqAE MC2nGwkFndFpFLozm6dDUe/T99XMSI8/7oknTy73vPlBej4Ry2m7PUnz6SEl9rz0Znf8 1FLBJYZ9BRowW2eE4JwBTLCFnvS3q0paCfq4bBVLY/u31/55ZXUlrdf0mA5uB0p7GbJ1 sO1AHYyA1AUUUttTjV2iPUH5474EQmLy1Sy9kPj39lv01JNu6unHi528V1fiF0M1GUxt 8bLg== X-Gm-Message-State: ALyK8tLb4JvKCzL1XV0Gryu++kMKX4c85ob8j7uYV5ftgvuoGwalcQegI88aNlimCU1dQw== X-Received: by 10.107.16.23 with SMTP id y23mr152471ioi.160.1464814420949; Wed, 01 Jun 2016 13:53:40 -0700 (PDT) Received: from cm.amd.com ([165.204.55.251]) by smtp.gmail.com with ESMTPSA id x83sm12983532itf.2.2016.06.01.13.53.40 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 01 Jun 2016 13:53:40 -0700 (PDT) From: Alex Deucher X-Google-Original-From: Alex Deucher To: dri-devel@lists.freedesktop.org Subject: [PATCH 09/12] drm/radeon: add a delay after ATPX dGPU power off Date: Wed, 1 Jun 2016 16:53:22 -0400 Message-Id: <1464814405-19729-10-git-send-email-alexander.deucher@amd.com> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1464814405-19729-1-git-send-email-alexander.deucher@amd.com> References: <1464814405-19729-1-git-send-email-alexander.deucher@amd.com> Cc: Alex Deucher , stable@vger.kernel.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP ATPX dGPU power control requires a 200ms delay between power off and on. This should fix dGPU failures on resume from power off. Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/radeon_atpx_handler.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_atpx_handler.c b/drivers/gpu/drm/radeon/radeon_atpx_handler.c index 55efbcd..3d95194 100644 --- a/drivers/gpu/drm/radeon/radeon_atpx_handler.c +++ b/drivers/gpu/drm/radeon/radeon_atpx_handler.c @@ -10,6 +10,7 @@ #include #include #include +#include #include "radeon_acpi.h" @@ -269,6 +270,10 @@ static int radeon_atpx_set_discrete_state(struct radeon_atpx *atpx, u8 state) if (!info) return -EIO; kfree(info); + + /* 200ms delay is required after off */ + if (state == 0) + msleep(200); } return 0; }