From: Lorenzo Bianconi <lorenzo@kernel.org> To: Sean Nyekjaer <sean@geanix.com> 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 13:55:38 +0200 Message-ID: <20190916115538.GC16063@localhost.localdomain> (raw) In-Reply-To: <07c96bca-f952-71c0-4608-30746fbbc055@geanix.com> [-- Attachment #1: Type: text/plain, Size: 2245 bytes --] > > > 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; please use enable_event instead of _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; we do not need this since there is the check: if (hw->enable_event == enable_event) return 0; > } else { > _enable_event = hw->enable_event & ~BIT(chan->channel2); > > /* only turn off sensor if no events is enabled */ > > > > > if (0 != _enable_event) > goto out; we do not need this as well > } > > /* 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? [-- Attachment #2: signature.asc --] [-- Type: application/pgp-signature, Size: 228 bytes --]
next prev parent reply index 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 2019-09-16 11:55 ` Lorenzo Bianconi [this message] 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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