From: vigneshr@ti•com (Vignesh R)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v4 0/6] Touchscreen performance related fixes
Date: Mon, 1 Dec 2014 15:23:25 +0530 [thread overview]
Message-ID: <547C3A95.30605@ti.com> (raw)
In-Reply-To: <20141124115116.GA14997@linutronix.de>
Hi Sebastian,
On Monday 24 November 2014 05:21 PM, Sebastian Andrzej Siewior wrote:
> * Vignesh R | 2014-11-14 10:37:25 [+0530]:
>
>> This series of patches fix TSC defects related to lag in touchscreen
>> performance and cursor jump at touch release. The lag was result of
>> udelay in TSC interrupt handler. Cursor jump due to false pen-up event.
>> The patches implement Advisory 1.0.31 in silicon errata of am335x-evm
> am335x not -evm. The am335x-evm is a board (with its own advisory
> document) built around the SoC.
>
> Just testing the v4. I can use now IIO and touchscren at the same time.
> back at v1 I reported that it does not work, this has been fixed now.
> I had it running for a few minutes, now I see one of WARN_ON() beeing
> triggered (I've cut a few numbers so don't wonder about PID 2 and so on):
>
I fixed the issue that was triggering the WARN_ON(). I think it would be
better if you tested these patches, before I posted them on the
mainline. I don't want to clutter the list with too main versions. Here
is the link to the tree with latest changes:
git clone -b tsc-devel git://git.ti.com/kernel/tsc-adc.git
(tsc-devel branch)
Please test the above tree and let me know the results.
I will post new version(v5) if there are no issues wrt IIO and TSC
working at the same time.
The cursor jump at touch release has been fixed. But I do see random
cursor movement when dragging on the screen. This is not due to false
pen-up events. My patches do not aim at fixing them. (the aim is to
remove udelay in irq handler and fix false pen-ups).
With these changes, false pen-ups have been eliminated and there is a
significant improvement in the performance of TSC. I feel these patches
can go in, if there are no other serious issues.
I will work on random cursor jump in a separate patch series.
Regards
Vignesh
next prev parent reply other threads:[~2014-12-01 9:53 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-14 5:07 [PATCH v4 0/6] Touchscreen performance related fixes Vignesh R
2014-11-14 5:07 ` [PATCH v4 1/6] input: touchscreen: ti_am335x_tsc Interchange touchscreen and ADC steps Vignesh R
2014-11-14 5:07 ` [PATCH v4 2/6] input: touchscreen: ti_am335x_tsc: Remove udelay in interrupt handler Vignesh R
2014-11-15 19:27 ` Richard Cochran
2014-11-17 4:27 ` Vignesh R
2014-11-17 8:23 ` Richard Cochran
2014-11-17 12:18 ` Vignesh R
2014-11-14 5:07 ` [PATCH v4 3/6] mfd: ti_am335x_tscadc: Remove unwanted reg_se_cache save Vignesh R
2014-11-18 14:30 ` Lee Jones
2014-11-18 17:12 ` Dmitry Torokhov
2014-11-20 13:56 ` Sekhar Nori
2014-11-20 14:23 ` Griffis, Brad
2014-11-20 14:34 ` Richard Cochran
2014-11-20 14:40 ` Richard Cochran
2014-11-21 12:10 ` Sekhar Nori
2014-11-21 13:10 ` Richard Cochran
2014-11-21 15:11 ` Johannes Pointner
2014-11-21 15:37 ` Sekhar Nori
2014-11-21 18:17 ` Johannes Pointner
2014-11-21 21:40 ` Richard Cochran
2014-11-21 22:25 ` Griffis, Brad
2014-11-24 8:32 ` Johannes Pointner
2014-11-24 8:57 ` Sebastian Andrzej Siewior
2014-11-24 10:01 ` Richard Cochran
2014-11-14 5:07 ` [PATCH v4 4/6] ARM: dts: AM335x: Make charge delay a DT parameter for TSC Vignesh R
2014-11-14 18:03 ` Tony Lindgren
2014-11-14 5:07 ` [PATCH v4 5/6] input: touchscreen: ti_am335x_tsc: Use charge delay DT parameter Vignesh R
2014-11-14 5:07 ` [PATCH v4 6/6] input: touchscreen: ti_am335x_tsc: Replace delta filtering with median filtering Vignesh R
2014-11-24 11:51 ` [PATCH v4 0/6] Touchscreen performance related fixes Sebastian Andrzej Siewior
2014-11-24 12:16 ` Vignesh R
2014-11-24 12:35 ` Sebastian Andrzej Siewior
2014-11-27 4:29 ` Vignesh R
2014-12-01 9:53 ` Vignesh R [this message]
2014-12-01 9:59 ` Sebastian Andrzej Siewior
2014-12-01 10:29 ` Vignesh R
2014-12-11 20:34 ` Nicolae Rosia
2014-12-11 20:40 ` Sebastian Andrzej Siewior
2014-12-12 13:48 ` Vignesh R
2014-12-12 13:55 ` Catalin Crenguta
2014-12-12 14:16 ` Griffis, Brad
2014-12-15 7:55 ` Catalin Crenguta
2014-12-15 12:45 ` Catalin Crenguta
2014-12-16 8:31 ` Catalin Crenguta
2014-12-16 15:30 ` Richard Cochran
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