From: Sean Nyekjaer <sean@geanix.com>
To: Lorenzo Bianconi <lorenzo@kernel.org>
Cc: linux-iio@vger.kernel.org, jic23@kernel.org,
lorenzo.bianconi83@gmail.com, denis.ciocca@st.com,
mario.tesi@st.com, armando.visconti@st.com, martin@geanix.com
Subject: Re: [RFC PATCH] iio: imu: st_lsm6dsx: filter motion events in driver
Date: Mon, 16 Sep 2019 13:29:02 +0200 [thread overview]
Message-ID: <07c96bca-f952-71c0-4608-30746fbbc055@geanix.com> (raw)
In-Reply-To: <20190916091649.GA16063@localhost.localdomain>
On 16/09/2019 11.16, Lorenzo Bianconi wrote:
>> + if (hw->event_en_mask & BIT(chan->channel2))
>> + goto out;
> Why do we need this?
>
Guess we need to check if 0 < hw->enable_event before disabling the
sensor...
>> +
>> /* do not enable events if they are already enabled */
>> if (state && hw->enable_event)
>> - return 0;
>> + goto out;
>>
static int st_lsm6dsx_write_event_config(struct iio_dev *iio_dev,
const struct iio_chan_spec
*chan,
enum iio_event_type type,
enum iio_event_direction dir,
int state)
{
struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev);
struct st_lsm6dsx_hw *hw = sensor->hw;
u8 _enable_event;
int err = 0;
if (type != IIO_EV_TYPE_THRESH)
return -EINVAL;
if (state) {
_enable_event = hw->enable_event | BIT(chan->channel2);
/* do not enable events if they are already enabled */
if (0 < hw->enable_event)
goto out;
} else {
_enable_event = hw->enable_event & ~BIT(chan->channel2);
/* only turn off sensor if no events is enabled */
if (0 != _enable_event)
goto out;
}
/* stop here if no changes have been made */
if (hw->enable_event == _enable_event)
return 0;
err = st_lsm6dsx_event_setup(hw, state);
if (err < 0)
return err;
err = st_lsm6dsx_sensor_set_enable(sensor, state);
if (err < 0)
return err;
out:
hw->enable_event = _enable_event;
return 0;
}
Is something like this better?
next prev parent reply other threads:[~2019-09-16 11:29 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-13 9:07 [PATCH v8 0/5] enable motion events for st_lsm6dsx Sean Nyekjaer
2019-09-13 9:07 ` [PATCH v8 1/5] iio: imu: st_lsm6dsx: move interrupt thread to core Sean Nyekjaer
2019-09-13 9:07 ` [PATCH v8 2/5] iio: imu: st_lsm6dsx: add motion events Sean Nyekjaer
2019-09-13 9:07 ` [PATCH v8 3/5] iio: imu: st_lsm6dsx: add wakeup-source option Sean Nyekjaer
2019-09-15 13:42 ` Lorenzo Bianconi
2019-09-13 9:07 ` [PATCH v8 4/5] iio: imu: st_lsm6dsx: always enter interrupt thread Sean Nyekjaer
2019-09-15 12:33 ` Jonathan Cameron
2019-09-15 12:48 ` Lorenzo Bianconi
2019-09-15 13:00 ` Jonathan Cameron
2019-09-15 13:07 ` Lorenzo Bianconi
2019-09-13 9:07 ` [PATCH v8 5/5] iio: imu: st_lsm6dsx: add motion report function and call from interrupt Sean Nyekjaer
2019-09-15 12:30 ` Jonathan Cameron
2019-09-15 13:05 ` Lorenzo Bianconi
2019-09-15 13:18 ` Jonathan Cameron
2019-09-15 13:22 ` Sean Nyekjaer
2019-09-15 13:35 ` Jonathan Cameron
2019-09-16 9:02 ` [RFC PATCH] iio: imu: st_lsm6dsx: filter motion events in driver Sean Nyekjaer
2019-09-16 9:16 ` Lorenzo Bianconi
2019-09-16 11:29 ` Sean Nyekjaer [this message]
2019-09-16 11:55 ` Lorenzo Bianconi
2019-09-16 12:09 ` Sean Nyekjaer
2019-09-16 12:22 ` Lorenzo Bianconi
2019-09-15 13:41 ` [PATCH v8 5/5] iio: imu: st_lsm6dsx: add motion report function and call from interrupt Lorenzo Bianconi
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