From: "Wang, Jiada" <jiada_wang@mentor.com>
To: Dmitry Osipenko <digetx@gmail.com>, <nick@shmanahar.org>,
<dmitry.torokhov@gmail.com>, <jikos@kernel.org>,
<benjamin.tissoires@redhat.com>, <bsz@semihalf.com>,
<rydberg@bitmath.org>
Cc: <linux-input@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<erosca@de.adit-jv.com>, <Andrew_Gabbasov@mentor.com>
Subject: Re: [PATCH v9 52/55] input: touchscreen: atmel_mxt_ts: Added sysfs entry for touchscreen status
Date: Fri, 27 Mar 2020 21:49:14 +0900 [thread overview]
Message-ID: <b9368137-2fdc-558d-c27c-54d56950f7b8@mentor.com> (raw)
In-Reply-To: <4aeda6f1-25d8-9437-5cd0-560e43dbe081@gmail.com>
Hi Dmitry
On 2020/03/26 4:35, Dmitry Osipenko wrote:
> 25.03.2020 16:33, Jiada Wang пишет:
>> From: Naveen Chakka <Naveen.Chakka@in.bosch.com>
>>
>> To know the current communication status of the touch controller during
>> runtime, sysfs interface is added
>>
>> sysfs interface: /sys/class/i2c-dev/i2c-*/device/*/touch_dev_stat
>> Executing the above sysfs interface provides two output values
>>
>> 1)Status of the touch device
>> value 0 represents device is inactive
>> value 1 represents device is active
>> 2)Error counter
>> value represents the number of times device in inactive since last read
>
> ...
>> /* Each client has this additional data */
>> struct mxt_data {
>> struct i2c_client *client;
>> @@ -372,6 +380,9 @@ struct mxt_data {
>> const char *pcfg_name;
>> const char *input_name;
>> struct mxt_flash *flash;
>
>> + struct work_struct watchdog_work;
>> + struct timer_list watchdog_timer;
>
> This should be replaced with a delayed_work.
will replace with delayer_work
>
>> + struct mxt_statusinfo mxt_status;
>>
>> /* Cached parameters from object table */
>> u16 T5_address;
>
> ...
>> +static void mxt_watchdog_work(struct work_struct *work)
>> +{
>> + struct mxt_data *data =
>> + container_of(work, struct mxt_data, watchdog_work);
>> + u16 info_buf;
>> + int ret = 0;
>> + u8 size = 2;
>
>> + if (data->suspended || data->in_bootloader)
>> + return;
>> +
>> + ret = __mxt_read_reg(data->client, 0, size, &info_buf);
>
> Looks like this need to be protected with a lock to not race with the
> suspending / bootloader states.
>
right, I will add lock in next version
>> + if (ret) {
>> + data->mxt_status.error_count++;
>> + data->mxt_status.dev_status = false;
>> + } else {
>> + data->mxt_status.dev_status = true;
>> + }
>> +}
>
> ...> @@ -4329,6 +4414,13 @@ static int mxt_probe(struct i2c_client
> *client, const struct i2c_device_id *id)
>> msleep(MXT_RESET_TIME);
>> }
>>
>> + INIT_WORK(&data->watchdog_work, mxt_watchdog_work);
>> +
>> + /* setup watchdog timer */
>> + timer_setup(&data->watchdog_timer, mxt_watchdog_timer, 0);
>> +
>> + mxt_start_wd_timer(data);
>
> I'd expect it to be optional and opt-in by either using #ifdef
> TOUCHSCREEN_ATMEL_MXT_DEBUG or having a new debugfs option to explicitly
> enable the "watchdog".
>
Thanks for your suggestion, I will use module_param to enable/disable
watchdog
Thanks,
Jiada
next prev parent reply other threads:[~2020-03-27 12:49 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-25 13:32 [PATCH v9 00/55] atmel_mxt_ts misc Jiada Wang
2020-03-25 13:32 ` [PATCH v9 01/55] Input: introduce input_mt_report_slot_inactive Jiada Wang
2020-03-25 13:32 ` [PATCH v9 02/55] Input: atmel_mxt_ts - rework sysfs init/remove Jiada Wang
2020-03-25 13:32 ` [PATCH v9 03/55] Input: atmel_mxt_ts - only read messages in mxt_acquire_irq() when necessary Jiada Wang
2020-03-25 13:32 ` [PATCH v9 04/55] Input: atmel_mxt_ts - split large i2c transfers into blocks Jiada Wang
2020-03-25 13:32 ` [PATCH v9 05/55] Input: atmel_mxt_ts - output status from T48 Noise Supression Jiada Wang
2020-03-25 13:32 ` [PATCH v9 06/55] Input: atmel_mxt_ts - output status from T42 Touch Suppression Jiada Wang
2020-03-25 13:32 ` [PATCH v9 07/55] Input: atmel_mxt_ts - implement T9 vector/orientation support Jiada Wang
2020-03-25 13:32 ` [PATCH v9 08/55] Input: atmel_mxt_ts - implement T15 Key Array support Jiada Wang
2020-03-25 13:32 ` [PATCH v9 09/55] Input: atmel_mxt_ts - handle reports from T47 Stylus object Jiada Wang
2020-03-25 13:32 ` [PATCH v9 10/55] Input: atmel_mxt_ts - implement support for T107 active stylus Jiada Wang
2020-03-25 13:32 ` [PATCH v9 11/55] Input: atmel_mxt_ts - add debug for T92 gesture and T93 touch seq msgs Jiada Wang
2020-03-25 13:32 ` [PATCH v9 12/55] Input: atmel_mxt_ts - release touch state during suspend Jiada Wang
2020-03-25 13:32 ` [PATCH v9 13/55] Input: atmel_mxt_ts - add regulator control support Jiada Wang
2020-03-25 19:05 ` Dmitry Osipenko
2020-03-27 11:09 ` Wang, Jiada
2020-03-29 18:54 ` Dmitry Osipenko
2020-03-30 4:10 ` Wang, Jiada
2020-03-25 13:32 ` [PATCH v9 14/55] dt-bindings: input: atmel: add suspend mode support Jiada Wang
2020-03-25 13:32 ` [PATCH v9 15/55] Input: atmel_mxt_ts - report failures in suspend/resume Jiada Wang
2020-03-25 13:32 ` [PATCH v9 16/55] Input: atmel_mxt_ts - allow specification of firmware file name Jiada Wang
2020-03-25 13:32 ` [PATCH v9 17/55] Input: atmel_mxt_ts: Rename mxt_fw_version_show to fw_version_show Jiada Wang
2020-03-25 13:32 ` [PATCH v9 18/55] Input: atmel_mxt_ts: Rename mxt_hw_version_show to hw_version_show Jiada Wang
2020-03-25 13:32 ` [PATCH v9 19/55] Input: atmel_mxt_ts: rename mxt_update_fw_store to update_fw_store Jiada Wang
2020-03-25 13:32 ` [PATCH v9 20/55] Input: atmel_mxt_ts - handle cfg filename via pdata/sysfs Jiada Wang
2020-03-25 13:33 ` [PATCH v9 21/55] dt-bindings: input: atmel: provide name of configuration file Jiada Wang
2020-03-25 13:33 ` [PATCH v9 22/55] Input: atmel_mxt_ts - allow input name to be specified in platform data Jiada Wang
2020-03-25 13:33 ` [PATCH v9 23/55] dt-bindings: input: atmel: support to specify input name Jiada Wang
2020-03-25 13:33 ` [PATCH v9 24/55] Input: atmel_mxt_ts - add config checksum attribute to sysfs Jiada Wang
2020-03-25 13:33 ` [PATCH v9 25/55] Input: atmel_mxt_ts - refactor firmware flash to extract context into struct Jiada Wang
2020-03-25 13:33 ` [PATCH v9 26/55] Input: atmel_mxt_ts - refactor code to enter bootloader into separate func Jiada Wang
2020-03-25 13:33 ` [PATCH v9 27/55] Input: atmel_mxt_ts - combine bootloader version query with probe Jiada Wang
2020-03-25 13:33 ` [PATCH v9 28/55] Input: atmel_mxt_ts - improve bootloader state machine handling Jiada Wang
2020-03-25 13:33 ` [PATCH v9 29/55] Input: atmel_mxt_ts - rename bl_completion to chg_completion Jiada Wang
2020-03-25 13:33 ` [PATCH v9 30/55] Input: atmel_mxt_ts - make bootloader interrupt driven Jiada Wang
2020-03-25 13:33 ` [PATCH v9 31/55] Input: atmel_mxt_ts - delay enabling IRQ when not using regulators Jiada Wang
2020-03-25 13:33 ` [PATCH v9 32/55] Input: atmel_mxt_ts - implement I2C retries Jiada Wang
2020-03-25 13:33 ` [PATCH v9 33/55] Input: atmel_mxt_ts - orientation is not present in hover Jiada Wang
2020-03-25 13:33 ` [PATCH v9 34/55] Input: atmel_mxt_ts - implement debug output for messages Jiada Wang
2020-03-25 13:33 ` [PATCH v9 35/55] Input: atmel_mxt_ts - implement improved debug message interface Jiada Wang
2020-03-25 13:33 ` [PATCH v9 36/55] Input: atmel_mxt_ts - eliminate data->raw_info_block Jiada Wang
2020-03-25 13:33 ` [PATCH v9 37/55] Input: atmel_mxt_ts - Change call-points of mxt_free_* functions Jiada Wang
2020-03-25 13:33 ` [PATCH v9 38/55] Input: atmel_mxt_ts - rely on calculated_crc rather than file config_crc Jiada Wang
2020-03-25 13:33 ` [PATCH v9 39/55] input: atmel_mxt_ts: export GPIO reset line via sysfs Jiada Wang
2020-03-25 13:33 ` [PATCH v9 40/55] input: atmel_mxt_ts: Add Missing Delay for reset handling of Atmel touch panel controller in detachable displays Jiada Wang
2020-03-25 13:33 ` [PATCH v9 41/55] Input: atmel_mxt_ts: Add support for run self-test routine Jiada Wang
2020-03-25 13:33 ` [PATCH v9 42/55] Input: atmel_mxt_ts: Limit the max bytes transferred in an i2c transaction Jiada Wang
2020-03-25 13:33 ` [PATCH v9 43/55] dt-bindings: input: atmel: support to set max bytes transferred Jiada Wang
2020-03-25 13:33 ` [PATCH v9 44/55] Input: atmel_mxt_ts: return error from mxt_process_messages_until_invalid() Jiada Wang
2020-03-25 13:33 ` [PATCH v9 45/55] Input: Atmel: improve error handling in mxt_start() Jiada Wang
2020-03-25 13:33 ` [PATCH v9 46/55] Input: Atmel: improve error handling in mxt_initialize() Jiada Wang
2020-03-25 13:33 ` [PATCH v9 47/55] Input: Atmel: improve error handling in mxt_update_cfg() Jiada Wang
2020-03-25 13:33 ` [PATCH v9 48/55] Input: Atmel: Improve error handling in mxt_initialize_input_device() Jiada Wang
2020-03-25 13:33 ` [PATCH v9 49/55] Input: Atmel: handle ReportID "0x00" while processing T5 messages Jiada Wang
2020-03-25 13:33 ` [PATCH v9 50/55] Input: Atmel: use T44 object to process " Jiada Wang
2020-03-25 13:33 ` [PATCH v9 51/55] Input: atmel_mxt_ts: use gpiod_set_value_cansleep for reset pin Jiada Wang
2020-03-25 13:33 ` [PATCH v9 52/55] input: touchscreen: atmel_mxt_ts: Added sysfs entry for touchscreen status Jiada Wang
2020-03-25 19:35 ` Dmitry Osipenko
2020-03-25 19:41 ` Dmitry Osipenko
2020-03-27 12:49 ` Wang, Jiada [this message]
2020-03-27 13:37 ` Dmitry Osipenko
2020-03-27 13:43 ` Dmitry Osipenko
2020-03-25 13:33 ` [PATCH v9 53/55] input: atmel_mxt_ts: added sysfs interface to update atmel T38 data Jiada Wang
2020-03-25 13:33 ` [PATCH v9 54/55] Input: atmel_mxt_ts: Implement synchronization during various operation Jiada Wang
2020-03-25 13:33 ` [PATCH v9 55/55] Input: atmel_mxt_ts - Fix compilation warning Jiada Wang
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