From: Lars-Peter Clausen <lars@metafoo.de>
To: Alexander Holler <holler@ahsoftware.de>
Cc: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
Jonathan Cameron <jic23@cam.ac.uk>,
rtc-linux@googlegroups.com,
Alessandro Zummo <a.zummo@towertech.it>,
srinivas pandruvada <srinivas.pandruvada@intel.com>
Subject: Re: [PATCH 3/3] iio: add rtc-driver for HID sensors of type time
Date: Sun, 09 Dec 2012 20:20:04 +0100 [thread overview]
Message-ID: <50C4E464.9070509@metafoo.de> (raw)
In-Reply-To: <50C4D58E.4020702@ahsoftware.de>
On 12/09/2012 07:16 PM, Alexander Holler wrote:
> Am 09.12.2012 17:40, schrieb Alexander Holler:
>> Am 09.12.2012 13:55, schrieb Lars-Peter Clausen:
>>> On 12/09/2012 01:21 PM, Alexander Holler wrote:
>>>> This driver makes the time from HID sensors (hubs) which are offering
>>>> such available like any other RTC does.
>>>>
>>>> Currently the time can only be read. Setting the time must be done
>>>> through sending a report, which currently isn't supported by
>>>> hid-sensor-hub.
>>>>
>>>> It is necessary that all values like year, month etc, are send as
>>>> 8bit values (1 byte each) and all of them in 1 report. Also the
>>>> spec HUTRR39b doesn't define the range of the year field, we
>>>> tread it as 0 - 99 because that's what most RTCs I know about are
>>>> offering.
>>>
>>> I don't think we should register a IIO device for this. Just an RTC
>>> device
>>> should be fully sufficient.
>>>
>>
>> You would have to implement all the used services hid-sensor-hub offers
>> in the rtc-driver again.
>
> Besides that, time is part of the spec for HID sensors, which makes
> sense. Making that available as a RTC to read/set the time is imho the
> best to way support that. If you want a driver which doesn't use the HID
> sensor hub framework (or iio), you would either have to define your own
> standard or make sure it is interoperable with the HID sensor hub
> framework, which might not be trivial.
I agree with what you wrote above. It just doesn't make sense to register a IIO
device for a RTC type device. Just rip out all the IIO related bits from the
driver and it will be fine.
- Lars
next prev parent reply other threads:[~2012-12-09 19:19 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-09 12:21 [PATCH 0/3] iio: HID sensor time (as RTC) Alexander Holler
2012-12-09 12:21 ` [PATCH 1/3] iio: hid-sensors: respect CONFIG_IIO_TRIGGER Alexander Holler
2012-12-09 12:21 ` [PATCH 2/3] iio: Add Usage IDs for HID time sensors Alexander Holler
2012-12-09 12:21 ` [PATCH 3/3] iio: add rtc-driver for HID sensors of type time Alexander Holler
2012-12-09 12:55 ` Lars-Peter Clausen
2012-12-09 16:40 ` Alexander Holler
2012-12-09 18:16 ` Alexander Holler
2012-12-09 19:20 ` Lars-Peter Clausen [this message]
2012-12-10 13:12 ` Alexander Holler
2012-12-10 14:51 ` [PATCH 3/3 v2] " Alexander Holler
2012-12-10 17:05 ` Lars-Peter Clausen
2012-12-10 19:45 ` Alexander Holler
2012-12-10 20:22 ` Lars-Peter Clausen
2012-12-10 21:26 ` Alexander Holler
2012-12-10 21:39 ` Lars-Peter Clausen
2012-12-10 21:42 ` Jonathan Cameron
2012-12-10 22:50 ` Alexander Holler
2012-12-11 9:31 ` Jonathan Cameron
2012-12-11 9:40 ` Lars-Peter Clausen
2012-12-11 12:39 ` Alexander Holler
2012-12-11 13:54 ` Jonathan Cameron
2012-12-11 18:21 ` [PATCH 1/4 v2] iio: hid-sensors: respect CONFIG_IIO_TRIGGER Alexander Holler
2012-12-11 18:21 ` [PATCH 2/4 RESEND] iio: Add Usage IDs for HID time sensors Alexander Holler
2012-12-15 11:06 ` Jonathan Cameron
2012-12-15 12:41 ` Alexander Holler
2012-12-15 12:45 ` [PATCH 1/4 " Alexander Holler
2012-12-15 12:45 ` [PATCH 2/4 RESEND] iio: merge hid-sensor-attributes.h into hid-sensor-hub.h Alexander Holler
2013-01-03 9:41 ` Jiri Kosina
2013-01-06 11:50 ` Jonathan Cameron
2012-12-15 12:45 ` [PATCH 3/4 v5 RESEND] rtc: add rtc-driver for HID sensors of type time Alexander Holler
2013-01-03 22:39 ` Andrew Morton
2013-01-04 9:18 ` Jiri Kosina
2013-01-04 13:10 ` Alexander Holler
2013-01-06 11:50 ` Jonathan Cameron
2012-12-15 12:45 ` [PATCH 4/4 RESEND] hid: iio: rename struct hid_sensor_iio_common to hid_sensor_common Alexander Holler
2013-01-03 9:42 ` Jiri Kosina
2013-01-06 11:50 ` Jonathan Cameron
2013-01-03 9:40 ` [PATCH 1/4 RESEND] iio: Add Usage IDs for HID time sensors Jiri Kosina
2013-01-06 11:51 ` Jonathan Cameron
2012-12-11 18:21 ` [PATCH 3/4] iio: merge hid-sensor-attributes.h into hid-sensor-hub.h Alexander Holler
2012-12-12 15:45 ` Pandruvada, Srinivas
2012-12-12 20:10 ` Alexander Holler
2012-12-12 20:28 ` [PATCHi 5/4] hid: iio: rename struct hid_sensor_iio_common to hid_sensor_common Alexander Holler
2012-12-12 21:04 ` Pandruvada, Srinivas
2012-12-11 18:21 ` [PATCH 4/4 v3] rtc: add rtc-driver for HID sensors of type time Alexander Holler
2012-12-12 9:51 ` Lars-Peter Clausen
2012-12-12 10:14 ` Alexander Holler
2012-12-12 10:18 ` Lars-Peter Clausen
2012-12-12 11:11 ` [PATCH 4/4 v4] " Alexander Holler
2012-12-14 9:42 ` Lars-Peter Clausen
2012-12-14 13:08 ` Alexander Holler
2012-12-14 14:15 ` Alexander Holler
2012-12-14 14:29 ` Alexander Holler
2012-12-14 14:34 ` Lars-Peter Clausen
2012-12-14 15:24 ` Alexander Holler
2012-12-14 16:33 ` Lars-Peter Clausen
2012-12-14 21:24 ` Alexander Holler
2012-12-14 22:02 ` [PATCH 4/4 v5] " Alexander Holler
2012-12-15 10:54 ` [PATCH 1/4 v2] iio: hid-sensors: respect CONFIG_IIO_TRIGGER Jonathan Cameron
2012-12-15 12:37 ` Alexander Holler
2012-12-16 22:15 ` [PATCH 3/3 v2] iio: add rtc-driver for HID sensors of type time Alessandro Zummo
2012-12-17 7:38 ` Alexander Holler
2012-12-10 22:20 ` Alexander Holler
2012-12-10 22:36 ` Lars-Peter Clausen
2012-12-11 0:01 ` Alexander Holler
2012-12-11 10:35 ` Alan Cox
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