From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Patil, Rachna" Subject: [PATCH v4 3/8] input: touchscreen: ti_tsc: remove unwanted fifo flush Date: Thu, 24 Jan 2013 09:15:07 +0530 Message-ID: <1358999112-31192-4-git-send-email-rachna@ti.com> References: <1358999112-31192-1-git-send-email-rachna@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1358999112-31192-1-git-send-email-rachna-l0cyMroinI0@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: devicetree-discuss-bounces+gldd-devicetree-discuss=m.gmane.org-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org Sender: "devicetree-discuss" To: linux-doc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-input-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-iio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Cc: Russell King , Samuel Ortiz , Dmitry Torokhov , Dmitry Torokhov , Rob Herring , gururaja.hebbar-l0cyMroinI0@public.gmane.org, Jonathan Cameron , "Patil, Rachna" List-Id: devicetree@vger.kernel.org From: "Patil, Rachna" When touchscreen and ADC are used together, this unwanted fifo flush leads to loss of ADC data. Signed-off-by: Patil, Rachna --- drivers/input/touchscreen/ti_am335x_tsc.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c index 0c460f9..064d2b2 100644 --- a/drivers/input/touchscreen/ti_am335x_tsc.c +++ b/drivers/input/touchscreen/ti_am335x_tsc.c @@ -308,8 +308,6 @@ static irqreturn_t titsc_irq(int irq, void *dev) unsigned int x = 0, y = 0; unsigned int z1, z2, z; unsigned int fsm; - unsigned int fifo1count, fifo0count; - int i; status = titsc_readl(ts_dev, REG_IRQSTATUS); if (status & IRQENB_FIFO0THRES) { @@ -318,14 +316,6 @@ static irqreturn_t titsc_irq(int irq, void *dev) z1 = titsc_readl(ts_dev, REG_FIFO0) & 0xfff; z2 = titsc_readl(ts_dev, REG_FIFO1) & 0xfff; - fifo1count = titsc_readl(ts_dev, REG_FIFO1CNT); - for (i = 0; i < fifo1count; i++) - titsc_readl(ts_dev, REG_FIFO1); - - fifo0count = titsc_readl(ts_dev, REG_FIFO0CNT); - for (i = 0; i < fifo0count; i++) - titsc_readl(ts_dev, REG_FIFO0); - if (ts_dev->pen_down && z1 != 0 && z2 != 0) { /* * Calculate pressure using formula -- 1.7.9.5