Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752699AbaDUN2x (ORCPT ); Mon, 21 Apr 2014 09:28:53 -0400 Received: from mga02.intel.com ([134.134.136.20]:4638 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752006AbaDUN2v (ORCPT ); Mon, 21 Apr 2014 09:28:51 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.97,896,1389772800"; d="scan'208";a="496733073" Message-ID: <53551D0F.40906@linux.intel.com> Date: Mon, 21 Apr 2014 21:28:47 +0800 From: "Jin, Yao" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Adam Williamson CC: Benjamin Tissoires , Linus Walleij , alan@linux.intel.com, mathias.nyman@intel.com, "linux-kernel@vger.kernel.org" , Mika Westerberg Subject: Re: [PATCH] pinctrl-baytrail: fix for irq descriptor conflict on ASUS T100TA References: <1397649959-29762-1-git-send-email-yao.jin@linux.intel.com> <5353A1F6.60602@linux.intel.com> <5353B8A4.1080900@linux.intel.com> <1398007690.2674.0.camel@adam.happyassassin.net> <5354BA59.2000008@linux.intel.com> In-Reply-To: <5354BA59.2000008@linux.intel.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2014/4/21 14:27, Jin, Yao wrote: > > > On 2014/4/20 23:28, Adam Williamson wrote: >> On Sun, 2014-04-20 at 20:08 +0800, Jin, Yao wrote: >>> For the issue that touch screen doesn't work, could you check power >>> state of LPSS devices? For example: >>> >>> cd /sys/bus/acpi/devices >>> grep -H . */power_state >>> >>> If they are D3cold, it should be the reason why touch screen doesn't >>> work. That's another issue, unrelated to this gpio patch. >> >> The touch screen worked fine with kernel 3.14, and Benjamin looked at >> debug output from the attempt to load the touchscreen driver when >> diagnosing the problem, he's not just guessing. I am building a kernel >> without your patch to confirm that fixes it. >> > > I tried the clean kernel 3.14 with the boot option "nomodeset text" on > Dell Venue 11 Pro (If without "nomodeset",my ubuntu is being "black > screen", but that should be another i915 issue). > > After system starup, I executed the "startx" to launch the xwindow. In > xwindow, the touchscreen work. > > I tried the kernel 3.14 again with my gpio patch applied, the result was > the same, the touchscreen work. > > I also check the DSDT table of Dell Venue 11 Pro by searching the > keyword "Interrupt", I can't find any clue for the irq conflict. > > I'm sorry I don't have a Dell Venue 8 for testing, but I guess it's > similar to Dell Venue 11 Pro. > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > Could you also add following change to disable the runtime PM of HSUART? After that then check if your touchscreen work? It's to solve a known issue.The change is based on 3.14. --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -368,8 +368,6 @@ static int dw8250_probe(struct platform_device *pdev) platform_set_drvdata(pdev, data); - pm_runtime_set_active(&pdev->dev); - pm_runtime_enable(&pdev->dev); return 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/