From patchwork Mon Jan 7 14:18:47 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maarten Lankhorst X-Patchwork-Id: 1941101 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by patchwork2.kernel.org (Postfix) with ESMTP id B1BE3DF230 for ; Mon, 7 Jan 2013 14:19:26 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9D3F9E6945 for ; Mon, 7 Jan 2013 06:19:26 -0800 (PST) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from youngberry.canonical.com (youngberry.canonical.com [91.189.89.112]) by gabe.freedesktop.org (Postfix) with ESMTP id CB950E6279 for ; Mon, 7 Jan 2013 06:18:48 -0800 (PST) Received: from 5ed48cef.cm-7-5c.dynamic.ziggo.nl ([94.212.140.239] helo=[192.168.1.128]) by youngberry.canonical.com with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1TsDXL-0007li-FU; Mon, 07 Jan 2013 14:18:47 +0000 Message-ID: <50EAD947.9010305@canonical.com> Date: Mon, 07 Jan 2013 15:18:47 +0100 From: Maarten Lankhorst User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Alex Deucher Subject: [PATCH] drm/radeon: add quirk for d3 delay during switcheroo poweron for apple macbooks Cc: Seth Forshee , "dri-devel@lists.freedesktop.org" X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org vga-switcheroo with apple-gmux does not switch correctly on my system. The PCI configuration space is not restored correctly, resulting in MSI not working after switch. Only useful item in dmesg is: [ 33.922807] radeon 0000:01:00.0: Refused to change power state, currently in D3 I did some testing, dumping the difference in ms between first succesful switch from D3 to D0, and it seems that there is slightly more than 20 ms difference when the device is re-enabled through vga-switcheroo. So bump the re-enable d3 delay to 20 ms to handle this, which fixes msi not working on my system after switcheroo-ing. Default d3_delay value is PCI_PM_D3_WAIT, 10 ms. Signed-off-by: Maarten Lankhorst diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c index 5515921..211a1d1 100644 --- a/drivers/gpu/drm/radeon/radeon_device.c +++ b/drivers/gpu/drm/radeon/radeon_device.c @@ -897,6 +897,25 @@ static void radeon_check_arguments(struct radeon_device *rdev) } /** + * radeon_switcheroo_quirk_long_wakeup - return true if longer d3 delay is + * needed for waking up. + * + * @pdev: pci dev pointer + */ +static bool radeon_switcheroo_quirk_long_wakeup(struct pci_dev *pdev) +{ + + /* 6600m in a macbook pro */ + if (pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE && + pdev->subsystem_device == 0x00e2) { + printk(KERN_INFO "radeon: quirking longer d3 wakeup delay\n"); + return true; + } + + return false; +} + +/** * radeon_switcheroo_set_state - set switcheroo state * * @pdev: pci dev pointer @@ -910,10 +929,19 @@ static void radeon_switcheroo_set_state(struct pci_dev *pdev, enum vga_switchero struct drm_device *dev = pci_get_drvdata(pdev); pm_message_t pmm = { .event = PM_EVENT_SUSPEND }; if (state == VGA_SWITCHEROO_ON) { + unsigned d3_delay = dev->pdev->d3_delay; + printk(KERN_INFO "radeon: switched on\n"); /* don't suspend or resume card normally */ dev->switch_power_state = DRM_SWITCH_POWER_CHANGING; + + if (d3_delay < 20 && radeon_switcheroo_quirk_long_wakeup(pdev)) + dev->pdev->d3_delay = 20; + radeon_resume_kms(dev); + + dev->pdev->d3_delay = d3_delay; + dev->switch_power_state = DRM_SWITCH_POWER_ON; drm_kms_helper_poll_enable(dev); } else {