From: Martin Fuzzey <mfuzzey@parkeon.com>
To: Nick Dyer <nick.dyer@itdev.co.uk>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Daniel Kurtz <djkurtz@chromium.org>,
Henrik Rydberg <rydberg@euromail.se>,
Joonyoung Shim <jy0922.shim@samsung.com>,
Alan Bowens <Alan.Bowens@atmel.com>,
linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
Peter Meerwald <pmeerw@pmeerw.net>,
Benson Leung <bleung@chromium.org>,
Olof Johansson <olofj@chromium.org>
Subject: Re: [11/51] Input: atmel_mxt_ts - Implement CRC check for configuration data
Date: Wed, 18 Sep 2013 18:59:10 +0200 [thread overview]
Message-ID: <5239DBDE.7010709@parkeon.com> (raw)
In-Reply-To: <1372337366-9286-12-git-send-email-nick.dyer@itdev.co.uk>
On 27/06/13 14:48, Nick Dyer wrote:
> The configuration is stored in NVRAM on the maXTouch chip. When the device is
> reset it reports a CRC of the stored configuration values. Therefore it isn't
> necessary to send the configuration on each probe - we can check the CRC
> matches and avoid a timeconsuming backup/reset cycle.
>
> Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
> Acked-by: Benson Leung <bleung@chromium.org>
> -static unsigned mxt_extract_T6_csum(const u8 *csum)
> +static u16 mxt_extract_T6_csum(const u8 *csum)
> {
> return csum[0] | (csum[1] << 8) | (csum[2] << 16);
> }
Shouldn't this be u32?
It's losing data causing the checksums not to match for me.
next prev parent reply other threads:[~2013-09-18 17:29 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-27 12:48 Atmel updates to atmel_mxt_ts touch controller driver - v6 Nick Dyer
2013-06-27 12:48 ` [PATCH 01/51] Input: atmel_mxt_ts - Remove unnecessary platform data Nick Dyer
2013-06-27 12:48 ` [PATCH 02/51] Input: atmel_mxt_ts - Improve T19 GPIO keys handling Nick Dyer
2013-07-18 17:11 ` rydberg
2013-06-27 12:48 ` [PATCH 03/51] Input: atmel_mxt_ts - Return IRQ_NONE when interrupt handler fails Nick Dyer
2013-06-27 12:48 ` [PATCH 04/51] Input: atmel_mxt_ts - define helper functions for size and instances Nick Dyer
2013-06-27 12:48 ` [PATCH 05/51] Input: atmel_mxt_ts - Select FW_LOADER for firmware code Nick Dyer
2013-06-27 12:48 ` [PATCH 06/51] Input: atmel_mxt_ts - wait for CHG assert in mxt_check_bootloader Nick Dyer
2013-06-27 12:48 ` [PATCH 07/51] Input: atmel_mxt_ts - wait for CHG after bootloader resets Nick Dyer
2013-06-27 12:48 ` [PATCH 08/51] Input: atmel_mxt_ts - Initialise IRQ before probing Nick Dyer
2013-07-18 17:13 ` rydberg
2013-06-27 12:48 ` [PATCH 09/51] Input: atmel_mxt_ts - Make wait-after-reset period compatible with all chips Nick Dyer
2013-06-27 12:48 ` [PATCH 10/51] Input: atmel_mxt_ts - Improve error reporting and debug Nick Dyer
2013-06-27 12:48 ` [PATCH 11/51] Input: atmel_mxt_ts - Implement CRC check for configuration data Nick Dyer
2013-09-18 16:59 ` Martin Fuzzey [this message]
2013-06-27 12:48 ` [PATCH 12/51] Input: atmel_mxt_ts - Download device config using firmware loader Nick Dyer
2013-09-18 17:08 ` [12/51] " Martin Fuzzey
2013-06-27 12:48 ` [PATCH 13/51] Input: atmel_mxt_ts - Calculate and check CRC in config file Nick Dyer
2013-06-27 12:48 ` [PATCH 14/51] Input: atmel_mxt_ts - Add additional bootloader addresses Nick Dyer
2013-06-27 12:48 ` [PATCH 15/51] Input: atmel_mxt_ts - Read and report bootloader version Nick Dyer
2013-06-27 12:48 ` [PATCH 16/51] Input: atmel_mxt_ts - Implement bootloader frame retries Nick Dyer
2013-06-27 12:48 ` [PATCH 17/51] Input: atmel_mxt_ts - Improve bootloader progress output Nick Dyer
2013-06-27 12:48 ` [PATCH 18/51] Input: atmel_mxt_ts - Add check for incorrect firmware file format Nick Dyer
2013-06-27 12:48 ` [PATCH 19/51] Input: atmel_mxt_ts - Read screen config from chip Nick Dyer
2013-06-27 12:48 ` [PATCH 20/51] Input: atmel_mxt_ts - Set default irqflags when there is no pdata Nick Dyer
2013-07-18 17:17 ` rydberg
2013-09-16 2:25 ` Dmitry Torokhov
2014-05-22 14:29 ` Nick Dyer
2014-05-23 16:37 ` Yufeng Shen
2014-05-24 12:41 ` Nick Dyer
2014-05-26 18:17 ` Yufeng Shen
2014-05-26 5:23 ` Dmitry Torokhov
2014-05-26 18:13 ` Yufeng Shen
2013-06-27 12:48 ` [PATCH 21/51] Input: atmel_mxt_ts - Use deep sleep mode when stopped Nick Dyer
2013-06-27 12:48 ` [PATCH 22/51] Input: atmel_mxt_ts - Add shutdown function Nick Dyer
2013-07-07 5:29 ` Dmitry Torokhov
2013-07-08 9:56 ` Nick Dyer
2013-07-10 16:55 ` Dmitry Torokhov
2013-07-10 18:32 ` Nick Dyer
2013-06-27 12:48 ` [PATCH 23/51] Input: atmel_mxt_ts - Rename pressure to amplitude to match spec Nick Dyer
2013-06-27 12:48 ` [PATCH 24/51] Input: atmel_mxt_ts - Rename touchscreen defines to include T9 Nick Dyer
2013-06-27 12:49 ` [PATCH 25/51] Input: atmel_mxt_ts - Handle multiple input reports in one message Nick Dyer
2013-07-18 17:18 ` rydberg
2013-06-27 12:49 ` [PATCH 26/51] Input: atmel_mxt_ts - Move input device init into separate function Nick Dyer
2013-07-07 5:34 ` Dmitry Torokhov
2013-07-08 9:41 ` Nick Dyer
2013-07-10 16:53 ` Dmitry Torokhov
2013-07-18 17:20 ` rydberg
2013-06-27 12:49 ` [PATCH 27/51] Input: atmel_mxt_ts - Handle APP_CRC_FAIL on startup Nick Dyer
2013-06-27 12:49 ` [PATCH 28/51] Input: atmel_mxt_ts - Handle bootloader previously unlocked Nick Dyer
2013-06-27 12:49 ` [PATCH 29/51] Input: atmel_mxt_ts - Add bootloader addresses for new chips Nick Dyer
2013-06-27 12:49 ` [PATCH 30/51] Input: atmel_mxt_ts - Recover from bootloader on probe Nick Dyer
2013-06-27 12:49 ` [PATCH 31/51] Input: atmel_mxt_ts - Add support for dynamic message size Nick Dyer
2013-06-27 12:49 ` [PATCH 32/51] Input: atmel_mxt_ts - Decode T6 status messages Nick Dyer
2013-06-27 12:49 ` [PATCH 33/51] Input: atmel_mxt_ts - Split message handler into separate functions Nick Dyer
2013-06-27 12:49 ` [PATCH 34/51] Input: atmel_mxt_ts - Implement T44 message handling Nick Dyer
2013-06-27 12:49 ` [PATCH 35/51] Input: atmel_mxt_ts - Output status from T48 Noise Supression Nick Dyer
2013-06-27 12:49 ` [PATCH 36/51] Input: atmel_mxt_ts - Output status from T42 Touch Suppression Nick Dyer
2013-06-27 12:49 ` [PATCH 37/51] Input: atmel_mxt_ts - Implement vector/orientation support Nick Dyer
2013-07-18 17:20 ` rydberg
2013-08-15 16:18 ` Nick Dyer
2013-06-27 12:49 ` [PATCH 38/51] Input: atmel_mxt_ts - implement I2C retries Nick Dyer
2013-06-27 12:49 ` [PATCH 39/51] Input: atmel_mxt_ts - Implement T63 Active Stylus support Nick Dyer
2013-07-18 17:21 ` rydberg
2013-06-27 12:49 ` [PATCH 40/51] Input: atmel_mxt_ts - Implement support for T15 Key Array Nick Dyer
2013-06-27 12:49 ` [PATCH 41/51] Input: atmel_mxt_ts - Remove unused defines Nick Dyer
2013-06-27 12:49 ` [PATCH 42/51] Input: atmel_mxt_ts - Verify Information Block checksum on probe Nick Dyer
2013-06-27 12:49 ` [PATCH 43/51] Input: atmel_mxt_ts - Use T18 RETRIGEN to handle IRQF_TRIGGER_LOW Nick Dyer
2013-06-27 12:49 ` [PATCH 44/51] Input: atmel_mxt_ts - Handle reports from T47 Stylus object Nick Dyer
2013-07-18 17:23 ` rydberg
2013-06-27 12:49 ` [PATCH 45/51] Input: atmel_mxt_ts - Release touch state during suspend Nick Dyer
2013-07-18 17:29 ` rydberg
2013-08-15 15:52 ` Nick Dyer
2013-06-27 12:49 ` [PATCH 46/51] Input: atmel_mxt_ts - Initialize power config before and after downloading cfg Nick Dyer
2013-06-27 12:49 ` [PATCH 47/51] Input: atmel_mxt_ts - Add regulator control support Nick Dyer
2013-06-27 12:49 ` [PATCH 48/51] Input: atmel_mxt_ts - Implement support for T100 touch object Nick Dyer
2013-06-27 12:49 ` [PATCH 49/51] Input: atmel_mxt_ts - Allow specification of firmware file name Nick Dyer
2013-06-27 12:49 ` [PATCH 50/51] Input: atmel_mxt_ts - Handle cfg filename via pdata/sysfs Nick Dyer
2013-06-27 12:49 ` [PATCH 51/51] Input: atmel_mxt_ts - Only use first T9 instance Nick Dyer
2013-06-27 15:17 ` Atmel updates to atmel_mxt_ts touch controller driver - v6 Nick Dyer
2013-07-18 19:47 ` rydberg
2013-08-15 15:55 ` Nick Dyer
2013-08-15 16:07 ` Dmitry Torokhov
2013-08-19 14:24 ` Nick Dyer
2013-09-10 13:58 ` Nick Dyer
[not found] ` <CAPDwgkOo7FYLujk16kJM=BqmXRKvZ2S_LOYURW0cXT5t=cmi6w@mail.gmail.com>
2014-01-15 10:44 ` Nick Dyer
[not found] ` <CAPDwgkOsP4K7r0-Mo-U52X9knRbGgbuD4dGptmj3x-LMTN75BA@mail.gmail.com>
2014-01-17 20:01 ` Nick Dyer
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