Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757759Ab3FLRMr (ORCPT ); Wed, 12 Jun 2013 13:12:47 -0400 Received: from www.linutronix.de ([62.245.132.108]:44718 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932066Ab3FLRMp (ORCPT ); Wed, 12 Jun 2013 13:12:45 -0400 From: Sebastian Andrzej Siewior To: Samuel Ortiz Cc: =?UTF-8?q?Beno=C3=AEt=20Cousson?= , Tony Lindgren , Jonathan Cameron , Dmitry Torokhov , Felipe Balbi , linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-iio@vger.kernel.org, linux-input@vger.kernel.org, Sebastian Andrzej Siewior Subject: [PATCH 18/21] input: ti_am335x_tsc: ACK the HW_PEN irq in ISR Date: Wed, 12 Jun 2013 18:58:19 +0200 Message-Id: <1371056302-12714-19-git-send-email-bigeasy@linutronix.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1371056302-12714-1-git-send-email-bigeasy@linutronix.de> References: <1371056302-12714-1-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-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1246 Lines: 36 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 1bceb25..2ba7703 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); -- 1.7.10.4 -- 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/