From: Jonathan Cameron <jic23@kernel.org>
To: Alexandru Ardelean <alexandru.ardelean@analog.com>
Cc: <linux-iio@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<lars@metafoo.de>
Subject: Re: [RFC PATCH 0/5] iio: move 'modes' initialization to core
Date: Sat, 5 Dec 2020 16:59:22 +0000 [thread overview]
Message-ID: <20201205165922.703acb3d@archlinux> (raw)
In-Reply-To: <20201203100423.77270-1-alexandru.ardelean@analog.com>
On Thu, 3 Dec 2020 12:04:18 +0200
Alexandru Ardelean <alexandru.ardelean@analog.com> wrote:
> I stumbled over this, while trying to implement some changes to the IIO
> buffer logic.
> Seems that most drivers have a INDIO_DIRECT_MODE, and some have
> INDIO_BUFFER_SOFTWARE only as a workaround for not having multiple IIO
> buffer-support-per-IIO-device (yet).
Examples of that particular corner case would be good from a discussion
point of view.
It's been a while though and those cases were always 'interesting'
so I may have misremembered how it works!
It is definitely also used to indicate cases where there is no trigger
to expose (usually devices doing DMA blocks or using a fifo).
That was the original intent IIRC.
>
> Since a lot of drivers seem to only support INDIO_DIRECT_MODE, it begs the
> question whether this starts to make sense as a default 'modes'
> initialization.
Hmm. Do we need to set it at all, or can we just make it implicit?
I'm not sure if that is semantically worse than having it set by default
or not. Thinking about it I think we do want to set it just for
consistency purposes.
I'm a bit in two minds about this set. It obviously is a noop from
functional point of view, but it's kind of nice to see the modes
explicitly called out. I guess we started walking down this route
anyway when we set IIO_TRIGGERED_BUFFER inside those setup routines.
The bit that bothers me is that it isn't really a 'default' as such
it just the most common value. I wonder if we could be more clever
and set it only if there as a channel with _RAW or _PROCESSED
though that would involve moving it to the registration rather than
creation.
Jonathan
>
> It opens up the idea of hiding 'indio_dev->modes' inside IIO core, with
> functions like '{devm_}iio_triggered_buffer_setup()' being able to extend
> the setup of these 'modes'.
> This idea is far from being ready, but I thought I'd try this RFC instead
> as a discussion starter in that direction.
>
> Alexandru Ardelean (5):
> iio: core: initialize 'modes' to INDIO_DIRECT_MODE by default
> iio,counter: remove modes init for INDIO_DIRECT_MODE only drivers
> iio: remove modes init for INDIO_DIRECT_MODE only drivers (manual)
> iio: adc: ad7768-1: remove explicit modes initialization
> iio: magnetometer: rm3100: remove explicit modes initialization
>
> drivers/counter/104-quad-8.c | 1 -
> drivers/iio/accel/adis16201.c | 1 -
> drivers/iio/accel/adis16209.c | 1 -
> drivers/iio/accel/adxl345_core.c | 1 -
> drivers/iio/accel/bma180.c | 1 -
> drivers/iio/accel/bma220_spi.c | 1 -
> drivers/iio/accel/bma400_core.c | 1 -
> drivers/iio/accel/bmc150-accel-core.c | 1 -
> drivers/iio/accel/da280.c | 1 -
> drivers/iio/accel/da311.c | 1 -
> drivers/iio/accel/dmard06.c | 1 -
> drivers/iio/accel/dmard09.c | 1 -
> drivers/iio/accel/dmard10.c | 1 -
> drivers/iio/accel/hid-sensor-accel-3d.c | 1 -
> drivers/iio/accel/kxcjk-1013.c | 1 -
> drivers/iio/accel/kxsd9.c | 1 -
> drivers/iio/accel/mc3230.c | 1 -
> drivers/iio/accel/mma7455_core.c | 1 -
> drivers/iio/accel/mma7660.c | 1 -
> drivers/iio/accel/mma8452.c | 1 -
> drivers/iio/accel/mma9551.c | 1 -
> drivers/iio/accel/mma9553.c | 1 -
> drivers/iio/accel/mxc4005.c | 1 -
> drivers/iio/accel/mxc6255.c | 1 -
> drivers/iio/accel/sca3000.c | 1 -
> drivers/iio/accel/st_accel_core.c | 1 -
> drivers/iio/accel/stk8312.c | 1 -
> drivers/iio/accel/stk8ba50.c | 1 -
> drivers/iio/adc/ab8500-gpadc.c | 1 -
> drivers/iio/adc/ad7091r-base.c | 1 -
> drivers/iio/adc/ad7124.c | 1 -
> drivers/iio/adc/ad7192.c | 1 -
> drivers/iio/adc/ad7266.c | 1 -
> drivers/iio/adc/ad7291.c | 1 -
> drivers/iio/adc/ad7292.c | 1 -
> drivers/iio/adc/ad7298.c | 1 -
> drivers/iio/adc/ad7476.c | 1 -
> drivers/iio/adc/ad7606.c | 1 -
> drivers/iio/adc/ad7766.c | 1 -
> drivers/iio/adc/ad7768-1.c | 1 -
> drivers/iio/adc/ad7780.c | 1 -
> drivers/iio/adc/ad7791.c | 1 -
> drivers/iio/adc/ad7793.c | 1 -
> drivers/iio/adc/ad7887.c | 1 -
> drivers/iio/adc/ad7923.c | 1 -
> drivers/iio/adc/ad7949.c | 1 -
> drivers/iio/adc/ad799x.c | 1 -
> drivers/iio/adc/adi-axi-adc.c | 1 -
> drivers/iio/adc/aspeed_adc.c | 1 -
> drivers/iio/adc/at91_adc.c | 1 -
> drivers/iio/adc/axp20x_adc.c | 1 -
> drivers/iio/adc/axp288_adc.c | 1 -
> drivers/iio/adc/bcm_iproc_adc.c | 1 -
> drivers/iio/adc/berlin2-adc.c | 1 -
> drivers/iio/adc/cc10001_adc.c | 1 -
> drivers/iio/adc/da9150-gpadc.c | 1 -
> drivers/iio/adc/dln2-adc.c | 1 -
> drivers/iio/adc/ep93xx_adc.c | 1 -
> drivers/iio/adc/exynos_adc.c | 1 -
> drivers/iio/adc/hi8435.c | 1 -
> drivers/iio/adc/hx711.c | 1 -
> drivers/iio/adc/imx7d_adc.c | 1 -
> drivers/iio/adc/intel_mrfld_adc.c | 1 -
> drivers/iio/adc/lp8788_adc.c | 1 -
> drivers/iio/adc/lpc18xx_adc.c | 1 -
> drivers/iio/adc/lpc32xx_adc.c | 1 -
> drivers/iio/adc/ltc2471.c | 1 -
> drivers/iio/adc/ltc2485.c | 1 -
> drivers/iio/adc/ltc2497-core.c | 1 -
> drivers/iio/adc/max1027.c | 1 -
> drivers/iio/adc/max11100.c | 1 -
> drivers/iio/adc/max1118.c | 1 -
> drivers/iio/adc/max1241.c | 1 -
> drivers/iio/adc/max1363.c | 1 -
> drivers/iio/adc/max9611.c | 1 -
> drivers/iio/adc/mcp320x.c | 1 -
> drivers/iio/adc/mcp3422.c | 1 -
> drivers/iio/adc/mcp3911.c | 1 -
> drivers/iio/adc/men_z188_adc.c | 1 -
> drivers/iio/adc/meson_saradc.c | 1 -
> drivers/iio/adc/mp2629_adc.c | 1 -
> drivers/iio/adc/mt6360-adc.c | 1 -
> drivers/iio/adc/mt6577_auxadc.c | 1 -
> drivers/iio/adc/mxs-lradc-adc.c | 1 -
> drivers/iio/adc/nau7802.c | 1 -
> drivers/iio/adc/npcm_adc.c | 1 -
> drivers/iio/adc/palmas_gpadc.c | 1 -
> drivers/iio/adc/qcom-pm8xxx-xoadc.c | 1 -
> drivers/iio/adc/qcom-spmi-adc5.c | 1 -
> drivers/iio/adc/qcom-spmi-iadc.c | 1 -
> drivers/iio/adc/qcom-spmi-vadc.c | 1 -
> drivers/iio/adc/rcar-gyroadc.c | 1 -
> drivers/iio/adc/rn5t618-adc.c | 1 -
> drivers/iio/adc/rockchip_saradc.c | 1 -
> drivers/iio/adc/sc27xx_adc.c | 1 -
> drivers/iio/adc/spear_adc.c | 1 -
> drivers/iio/adc/stm32-dfsdm-adc.c | 1 -
> drivers/iio/adc/stmpe-adc.c | 1 -
> drivers/iio/adc/stx104.c | 1 -
> drivers/iio/adc/sun4i-gpadc-iio.c | 1 -
> drivers/iio/adc/ti-adc081c.c | 1 -
> drivers/iio/adc/ti-adc0832.c | 1 -
> drivers/iio/adc/ti-adc084s021.c | 1 -
> drivers/iio/adc/ti-adc108s102.c | 1 -
> drivers/iio/adc/ti-adc12138.c | 1 -
> drivers/iio/adc/ti-adc128s052.c | 1 -
> drivers/iio/adc/ti-adc161s626.c | 1 -
> drivers/iio/adc/ti-ads1015.c | 1 -
> drivers/iio/adc/ti-ads124s08.c | 1 -
> drivers/iio/adc/ti-ads7950.c | 1 -
> drivers/iio/adc/ti-ads8344.c | 1 -
> drivers/iio/adc/ti-ads8688.c | 1 -
> drivers/iio/adc/ti-tlc4541.c | 1 -
> drivers/iio/adc/ti_am335x_adc.c | 1 -
> drivers/iio/adc/twl4030-madc.c | 1 -
> drivers/iio/adc/twl6030-gpadc.c | 1 -
> drivers/iio/adc/vf610_adc.c | 1 -
> drivers/iio/adc/viperboard_adc.c | 1 -
> drivers/iio/adc/xilinx-xadc-core.c | 1 -
> drivers/iio/afe/iio-rescale.c | 1 -
> drivers/iio/amplifiers/ad8366.c | 1 -
> drivers/iio/amplifiers/hmc425a.c | 1 -
> drivers/iio/chemical/ams-iaq-core.c | 1 -
> drivers/iio/chemical/atlas-ezo-sensor.c | 1 -
> drivers/iio/chemical/bme680_core.c | 1 -
> drivers/iio/chemical/ccs811.c | 1 -
> drivers/iio/chemical/pms7003.c | 1 -
> drivers/iio/chemical/scd30_core.c | 1 -
> drivers/iio/chemical/sgp30.c | 1 -
> drivers/iio/chemical/sps30.c | 1 -
> drivers/iio/chemical/vz89x.c | 1 -
> drivers/iio/dac/ad5064.c | 1 -
> drivers/iio/dac/ad5360.c | 1 -
> drivers/iio/dac/ad5380.c | 1 -
> drivers/iio/dac/ad5421.c | 1 -
> drivers/iio/dac/ad5446.c | 1 -
> drivers/iio/dac/ad5449.c | 1 -
> drivers/iio/dac/ad5504.c | 1 -
> drivers/iio/dac/ad5592r-base.c | 1 -
> drivers/iio/dac/ad5624r_spi.c | 1 -
> drivers/iio/dac/ad5686.c | 1 -
> drivers/iio/dac/ad5755.c | 1 -
> drivers/iio/dac/ad5758.c | 1 -
> drivers/iio/dac/ad5761.c | 1 -
> drivers/iio/dac/ad5764.c | 1 -
> drivers/iio/dac/ad5770r.c | 1 -
> drivers/iio/dac/ad5791.c | 1 -
> drivers/iio/dac/ad7303.c | 1 -
> drivers/iio/dac/ad8801.c | 1 -
> drivers/iio/dac/cio-dac.c | 1 -
> drivers/iio/dac/dpot-dac.c | 1 -
> drivers/iio/dac/ds4424.c | 1 -
> drivers/iio/dac/lpc18xx_dac.c | 1 -
> drivers/iio/dac/ltc1660.c | 1 -
> drivers/iio/dac/ltc2632.c | 1 -
> drivers/iio/dac/m62332.c | 1 -
> drivers/iio/dac/max517.c | 1 -
> drivers/iio/dac/max5821.c | 1 -
> drivers/iio/dac/mcp4725.c | 1 -
> drivers/iio/dac/mcp4922.c | 1 -
> drivers/iio/dac/stm32-dac.c | 1 -
> drivers/iio/dac/ti-dac082s085.c | 1 -
> drivers/iio/dac/ti-dac5571.c | 1 -
> drivers/iio/dac/ti-dac7311.c | 1 -
> drivers/iio/dac/ti-dac7612.c | 1 -
> drivers/iio/dac/vf610_dac.c | 1 -
> drivers/iio/dummy/iio_simple_dummy.c | 3 ---
> drivers/iio/frequency/ad9523.c | 1 -
> drivers/iio/frequency/adf4350.c | 1 -
> drivers/iio/frequency/adf4371.c | 1 -
> drivers/iio/gyro/adis16080.c | 1 -
> drivers/iio/gyro/adis16130.c | 1 -
> drivers/iio/gyro/adis16136.c | 1 -
> drivers/iio/gyro/adis16260.c | 1 -
> drivers/iio/gyro/adxrs290.c | 1 -
> drivers/iio/gyro/adxrs450.c | 1 -
> drivers/iio/gyro/bmg160_core.c | 1 -
> drivers/iio/gyro/fxas21002c_core.c | 1 -
> drivers/iio/gyro/hid-sensor-gyro-3d.c | 1 -
> drivers/iio/gyro/itg3200_core.c | 1 -
> drivers/iio/gyro/mpu3050-core.c | 1 -
> drivers/iio/gyro/st_gyro_core.c | 1 -
> drivers/iio/health/afe4403.c | 1 -
> drivers/iio/health/afe4404.c | 1 -
> drivers/iio/humidity/am2315.c | 1 -
> drivers/iio/humidity/dht11.c | 1 -
> drivers/iio/humidity/hdc100x.c | 1 -
> drivers/iio/humidity/hdc2010.c | 1 -
> drivers/iio/humidity/hid-sensor-humidity.c | 1 -
> drivers/iio/humidity/hts221_core.c | 1 -
> drivers/iio/humidity/htu21.c | 1 -
> drivers/iio/humidity/si7005.c | 1 -
> drivers/iio/humidity/si7020.c | 1 -
> drivers/iio/imu/adis16400.c | 1 -
> drivers/iio/imu/adis16460.c | 1 -
> drivers/iio/imu/adis16475.c | 1 -
> drivers/iio/imu/adis16480.c | 1 -
> drivers/iio/imu/bmi160/bmi160_core.c | 1 -
> drivers/iio/imu/fxos8700_core.c | 1 -
> drivers/iio/imu/kmx61.c | 1 -
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 1 -
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c | 1 -
> drivers/iio/industrialio-core.c | 1 +
> drivers/iio/light/adjd_s311.c | 1 -
> drivers/iio/light/adux1020.c | 1 -
> drivers/iio/light/al3010.c | 1 -
> drivers/iio/light/al3320a.c | 1 -
> drivers/iio/light/apds9300.c | 1 -
> drivers/iio/light/as73211.c | 1 -
> drivers/iio/light/bh1750.c | 1 -
> drivers/iio/light/bh1780.c | 1 -
> drivers/iio/light/cm32181.c | 1 -
> drivers/iio/light/cm3232.c | 1 -
> drivers/iio/light/cm3323.c | 1 -
> drivers/iio/light/cm3605.c | 1 -
> drivers/iio/light/cm36651.c | 1 -
> drivers/iio/light/gp2ap002.c | 1 -
> drivers/iio/light/gp2ap020a00f.c | 1 -
> drivers/iio/light/hid-sensor-als.c | 1 -
> drivers/iio/light/hid-sensor-prox.c | 1 -
> drivers/iio/light/iqs621-als.c | 1 -
> drivers/iio/light/isl29018.c | 1 -
> drivers/iio/light/isl29028.c | 1 -
> drivers/iio/light/isl29125.c | 1 -
> drivers/iio/light/jsa1212.c | 1 -
> drivers/iio/light/lm3533-als.c | 1 -
> drivers/iio/light/ltr501.c | 1 -
> drivers/iio/light/lv0104cs.c | 1 -
> drivers/iio/light/max44009.c | 1 -
> drivers/iio/light/noa1305.c | 1 -
> drivers/iio/light/opt3001.c | 1 -
> drivers/iio/light/pa12203001.c | 1 -
> drivers/iio/light/rpr0521.c | 1 -
> drivers/iio/light/si1133.c | 1 -
> drivers/iio/light/si1145.c | 1 -
> drivers/iio/light/st_uvis25_core.c | 1 -
> drivers/iio/light/stk3310.c | 1 -
> drivers/iio/light/tcs3414.c | 1 -
> drivers/iio/light/tcs3472.c | 1 -
> drivers/iio/light/tsl2563.c | 1 -
> drivers/iio/light/tsl2583.c | 1 -
> drivers/iio/light/tsl2772.c | 1 -
> drivers/iio/light/tsl4531.c | 1 -
> drivers/iio/light/us5182d.c | 1 -
> drivers/iio/light/vcnl4000.c | 1 -
> drivers/iio/light/vcnl4035.c | 1 -
> drivers/iio/light/veml6030.c | 1 -
> drivers/iio/light/veml6070.c | 1 -
> drivers/iio/light/vl6180.c | 1 -
> drivers/iio/light/zopt2201.c | 1 -
> drivers/iio/magnetometer/ak8974.c | 1 -
> drivers/iio/magnetometer/ak8975.c | 1 -
> drivers/iio/magnetometer/bmc150_magn.c | 1 -
> drivers/iio/magnetometer/hid-sensor-magn-3d.c | 1 -
> drivers/iio/magnetometer/hmc5843_core.c | 1 -
> drivers/iio/magnetometer/mag3110.c | 1 -
> drivers/iio/magnetometer/mmc35240.c | 1 -
> drivers/iio/magnetometer/rm3100-core.c | 1 -
> drivers/iio/magnetometer/st_magn_core.c | 1 -
> drivers/iio/multiplexer/iio-mux.c | 1 -
> drivers/iio/orientation/hid-sensor-incl-3d.c | 1 -
> drivers/iio/orientation/hid-sensor-rotation.c | 1 -
> drivers/iio/position/iqs624-pos.c | 1 -
> drivers/iio/potentiometer/max5481.c | 1 -
> drivers/iio/potentiometer/max5487.c | 1 -
> drivers/iio/potentiostat/lmp91000.c | 1 -
> drivers/iio/pressure/abp060mg.c | 1 -
> drivers/iio/pressure/bmp280-core.c | 1 -
> drivers/iio/pressure/dlhl60d.c | 1 -
> drivers/iio/pressure/dps310.c | 1 -
> drivers/iio/pressure/hid-sensor-press.c | 1 -
> drivers/iio/pressure/hp03.c | 1 -
> drivers/iio/pressure/hp206c.c | 1 -
> drivers/iio/pressure/icp10100.c | 1 -
> drivers/iio/pressure/mpl115.c | 1 -
> drivers/iio/pressure/mpl3115.c | 1 -
> drivers/iio/pressure/ms5611_core.c | 1 -
> drivers/iio/pressure/ms5637.c | 1 -
> drivers/iio/pressure/st_pressure_core.c | 1 -
> drivers/iio/pressure/t5403.c | 1 -
> drivers/iio/pressure/zpa2326.c | 1 -
> drivers/iio/proximity/as3935.c | 1 -
> drivers/iio/proximity/isl29501.c | 1 -
> drivers/iio/proximity/mb1232.c | 1 -
> drivers/iio/proximity/ping.c | 1 -
> drivers/iio/proximity/pulsedlight-lidar-lite-v2.c | 1 -
> drivers/iio/proximity/rfd77402.c | 1 -
> drivers/iio/proximity/srf04.c | 1 -
> drivers/iio/proximity/srf08.c | 1 -
> drivers/iio/proximity/sx9310.c | 1 -
> drivers/iio/proximity/sx9500.c | 1 -
> drivers/iio/proximity/vcnl3020.c | 1 -
> drivers/iio/proximity/vl53l0x-i2c.c | 1 -
> drivers/iio/resolver/ad2s1200.c | 1 -
> drivers/iio/resolver/ad2s90.c | 1 -
> drivers/iio/temperature/hid-sensor-temperature.c | 1 -
> drivers/iio/temperature/iqs620at-temp.c | 1 -
> drivers/iio/temperature/ltc2983.c | 1 -
> drivers/iio/temperature/max31856.c | 1 -
> drivers/iio/temperature/maxim_thermocouple.c | 1 -
> drivers/iio/temperature/mlx90614.c | 1 -
> drivers/iio/temperature/mlx90632.c | 1 -
> drivers/iio/temperature/tmp006.c | 1 -
> drivers/iio/temperature/tmp007.c | 1 -
> drivers/iio/temperature/tsys01.c | 1 -
> drivers/iio/temperature/tsys02d.c | 1 -
> drivers/input/touchscreen/tsc2007_iio.c | 1 -
> drivers/platform/x86/toshiba_acpi.c | 1 -
> drivers/staging/iio/accel/adis16203.c | 1 -
> drivers/staging/iio/accel/adis16240.c | 1 -
> drivers/staging/iio/adc/ad7280a.c | 1 -
> drivers/staging/iio/adc/ad7816.c | 1 -
> drivers/staging/iio/addac/adt7316.c | 1 -
> drivers/staging/iio/cdc/ad7150.c | 2 --
> drivers/staging/iio/cdc/ad7746.c | 1 -
> drivers/staging/iio/frequency/ad9832.c | 1 -
> drivers/staging/iio/frequency/ad9834.c | 1 -
> drivers/staging/iio/meter/ade7854.c | 1 -
> drivers/staging/iio/resolver/ad2s1210.c | 1 -
> 319 files changed, 1 insertion(+), 321 deletions(-)
>
next prev parent reply other threads:[~2020-12-05 18:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-03 10:04 [RFC PATCH 0/5] iio: move 'modes' initialization to core Alexandru Ardelean
2020-12-03 10:04 ` [RFC PATCH 1/5] iio: core: initialize 'modes' to INDIO_DIRECT_MODE by default Alexandru Ardelean
2020-12-03 10:04 ` [RFC PATCH 3/5] iio: remove modes init for INDIO_DIRECT_MODE only drivers (manual) Alexandru Ardelean
2020-12-03 10:04 ` [RFC PATCH 4/5] iio: adc: ad7768-1: remove explicit modes initialization Alexandru Ardelean
2020-12-03 10:04 ` [RFC PATCH 5/5] iio: magnetometer: rm3100: " Alexandru Ardelean
2020-12-05 16:59 ` Jonathan Cameron [this message]
2020-12-21 7:39 ` [RFC PATCH 0/5] iio: move 'modes' initialization to core Alexandru Ardelean
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201205165922.703acb3d@archlinux \
--to=jic23@kernel.org \
--cc=alexandru.ardelean@analog.com \
--cc=lars@metafoo.de \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).