From patchwork Wed Jun 5 16:24:52 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 2671241 Return-Path: X-Original-To: patchwork-linux-input@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 65A38DF264 for ; Wed, 5 Jun 2013 16:26:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755813Ab3FEQ0H (ORCPT ); Wed, 5 Jun 2013 12:26:07 -0400 Received: from www.linutronix.de ([62.245.132.108]:35237 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755692Ab3FEQ0G (ORCPT ); Wed, 5 Jun 2013 12:26:06 -0400 Received: from localhost ([127.0.0.1] helo=localhost.localdomain) by Galois.linutronix.de with esmtp (Exim 4.72) (envelope-from ) id 1UkGWY-0005Yp-JG; Wed, 05 Jun 2013 18:25:22 +0200 From: Sebastian Andrzej Siewior To: Samuel Ortiz Cc: Felipe Balbi , linux-iio@vger.kernel.org, linux-input@vger.kernel.org, Dmitry Torokhov , Jonathan Cameron , Sebastian Andrzej Siewior Subject: [PATCH 19/22] input/ti_am335x_tsc: ACK the HW_PEN irq in ISR Date: Wed, 5 Jun 2013 18:24:52 +0200 Message-Id: <1370449495-29981-20-git-send-email-bigeasy@linutronix.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1370449495-29981-1-git-send-email-bigeasy@linutronix.de> References: <1370449495-29981-1-git-send-email-bigeasy@linutronix.de> X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1, SHORTCIRCUIT=-0.0001 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org The interrupt source IRQENB_HW_PEN is enabled in suspend and suposed to be used as a wake up source. Once this interrupt source is unmaksed, the devices ends up in ISR and never continues. This change ACKs the interrupt and disables it so the system does not freeze. Signed-off-by: Sebastian Andrzej Siewior --- drivers/input/touchscreen/ti_am335x_tsc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c index fa9692c..82d4a39 100644 --- a/drivers/input/touchscreen/ti_am335x_tsc.c +++ b/drivers/input/touchscreen/ti_am335x_tsc.c @@ -308,6 +308,12 @@ static irqreturn_t titsc_irq(int irq, void *dev) irqclr |= IRQENB_PENUP; } + if (status & IRQENB_HW_PEN) { + + titsc_writel(ts_dev, REG_IRQWAKEUP, 0x00); + titsc_writel(ts_dev, REG_IRQCLR, IRQENB_HW_PEN); + } + titsc_writel(ts_dev, REG_IRQSTATUS, irqclr); am335x_tsc_se_update(ts_dev->mfd_tscadc);