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Message-Id: <1444220501-23623-2-git-send-email-fcooper@ti.com> Date: Wed, 7 Oct 2015 07:21:38 -0500 From: fcooper@...com To: dmitry.torokhov@...il.com, linux-input@...r.kernel.org, linux-kernel@...r.kernel.org, fcooper@...com, maxime.ripard@...e-electrons.com, LW@...O-electronics.de, jg1.han@...sung.com, asaf.vertz@...demg.com Subject: [RFC 1/4] Input: edt-ft5x06 - Use max support points to determine how much to read From: Franklin S Cooper Jr <fcooper@...com> Calculate the amount of data that needs to be read for the specified max number of support points. If the maximum number of support points changes then the amount that is read from the touch screen controller should reflect this. Signed-off-by: Franklin S Cooper Jr <fcooper@...com> --- drivers/input/touchscreen/edt-ft5x06.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 7239c31..1e0ed6e 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -178,14 +178,16 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id) cmd = 0xf9; /* tell the controller to send touch data */ offset = 5; /* where the actual touch data starts */ tplen = 4; /* data comes in so called frames */ - datalen = 26; /* how much bytes to listen for */ + + /* how many bytes to listen for */ + datalen = tplen * MAX_SUPPORT_POINTS + offset + 1; break; case M09: cmd = 0x02; offset = 1; tplen = 6; - datalen = 29; + datalen = tplen * MAX_SUPPORT_POINTS - cmd + 1; break; default: -- 2.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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