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ee19ac340c
linux/drivers/iio/adc
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Nikita Yushchenko ee19ac340c iio: hi8435: avoid garbage event at first enable 
Currently, driver generates events for channels if new reading differs
from previous one. This "previous value" is initialized to zero, which
results into event if value is constant-one.

Fix that by initializing "previous value" by reading at event enable
time.

This provides reliable sequence for userspace:
- enable event,
- AFTER THAT read current value,
- AFTER THAT each event will correspond to change.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-05-20 17:33:52 +01:00
..
ad799x.c iio: adc: ad799x: constify attribute_group structures 2017-03-29 22:12:41 +01:00
ad7266.c iio: devm_regulator_get_optional never returns NULL 2016-09-05 21:09:38 +01:00
ad7291.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad7298.c iio: adc: ad7298: use iio helper function to guarantee direct mode 2016-07-24 19:58:42 +01:00
ad7476.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad7766.c iio:adc: ad7766: testing the wrong variable in probe 2016-11-12 14:35:21 +00:00
ad7791.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad7793.c iio: adc: ad7793: use iio helper function to guarantee direct mode 2016-07-24 19:58:41 +01:00
ad7887.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad7923.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ad_sigma_delta.c
aspeed_adc.c iio: Aspeed ADC 2017-04-01 11:53:20 +01:00
at91_adc.c iio: adc: at91: add suspend and resume callback 2016-11-05 16:33:00 +00:00
at91-sama5d2_adc.c Merge 4.6-rc7 into staging-next 2016-05-09 13:20:04 +02:00
axp288_adc.c iio: adc: axp288: Drop bogus AXP288_ADC_TS_PIN_CTRL register modifications 2017-01-10 19:54:57 +00:00
bcm_iproc_adc.c iio: Add driver for Broadcom iproc-static-adc 2016-07-03 11:32:30 +01:00
berlin2-adc.c
cc10001_adc.c iio:core: timestamping clock selection support 2016-06-30 19:41:38 +01:00
cpcap-adc.c iio: adc: cpcap: Add minimal support for CPCAP PMIC ADC 2017-03-30 19:25:23 +01:00
da9150-gpadc.c
envelope-detector.c iio: envelope-detector: ADC driver based on a DAC and a comparator 2016-11-13 13:07:17 +00:00
exynos_adc.c iio: adc: Remove unnecessary cast on void pointer 2017-04-02 09:46:25 +01:00
fsl-imx25-gcq.c iio: adc: imx25-gcq: Fix module autoload 2017-01-10 19:54:56 +00:00
hi8435.c iio: hi8435: avoid garbage event at first enable 2017-05-20 17:33:52 +01:00
hx711.c iio: adc: hx711: constify attribute_group structures 2017-04-01 11:39:04 +01:00
imx7d_adc.c iio: adc: Remove unnecessary cast on void pointer 2017-04-02 09:46:25 +01:00
ina2xx-adc.c iio: adc: Fix bad GENMASK use, typos, whitespace 2017-05-07 14:42:12 +01:00
Kconfig iio: adc: add driver for the ti-adc084s021 chip 2017-05-14 16:34:11 +01:00
lp8788_adc.c
lpc18xx_adc.c iio: adc: add NXP LPC18xx ADC driver 2016-03-12 18:11:48 +00:00
lpc32xx_adc.c staging:iio:adc:lpc32xx Move out of staging. 2017-02-11 11:19:25 +00:00
ltc2485.c iio: adc: ltc2485: add support for Linear Technology LTC2485 ADC 2016-08-29 16:57:40 +01:00
ltc2497.c iio:adc: Driver for Linear Technology LTC2497 ADC 2017-04-02 10:56:59 +01:00
Makefile iio: adc: add driver for the ti-adc084s021 chip 2017-05-14 16:34:11 +01:00
max1027.c iio: adc: Remove unnecessary cast on void pointer 2017-04-02 09:46:25 +01:00
max1118.c iio: adc: add max1117/max1118/max1119 ADC driver 2017-04-14 15:09:06 +01:00
max1363.c iio: adc: max1363: constify attribute_group structures 2017-03-29 22:10:58 +01:00
max9611.c iio: adc: Add Maxim max9611 ADC driver 2017-04-08 17:26:06 +01:00
max11100.c iio: adc: replace comma with a semicolon 2017-03-30 19:11:27 +01:00
mcp320x.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
mcp3422.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
men_z188_adc.c iio: adc: men_z188_adc: constify iio_info structures 2016-09-18 11:58:31 +01:00
meson_saradc.c iio: adc: meson-saradc: add Meson8b SoC compatibility 2017-05-07 12:30:45 +01:00
mt6577_auxadc.c iio: adc: mt2701: Add Mediatek auxadc driver for mt2701. 2016-08-21 19:54:30 +01:00
mxs-lradc.c iio: mxs-lradc: disable only masked channels in mxs_lradc_hw_stop 2016-05-04 10:44:28 +01:00
nau7802.c iio: adc: Use complete() instead of complete_all() 2016-08-15 18:01:27 +01:00
palmas_gpadc.c iio: adc: palmas_gpadc: retrieve a valid iio_dev in suspend/resume 2017-01-21 14:26:03 +00:00
qcom-pm8xxx-xoadc.c iio: adc: add a driver for Qualcomm PM8xxx HK/XOADC 2017-04-08 17:42:26 +01:00
qcom-spmi-iadc.c
qcom-spmi-vadc.c iio: adc: break out common code from SPMI VADC 2017-04-08 17:40:49 +01:00
qcom-vadc-common.c iio: adc: break out common code from SPMI VADC 2017-04-08 17:40:49 +01:00
qcom-vadc-common.h iio: adc: break out common code from SPMI VADC 2017-04-08 17:40:49 +01:00
rcar-gyroadc.c iio: adc: rcar-gyroadc: Derive interface clock speed from fck clock 2017-04-27 05:58:03 +01:00
rockchip_saradc.c iio: adc: Remove unnecessary cast on void pointer 2017-04-02 09:46:25 +01:00
spear_adc.c staging:iio:adc:spear Move out of staging. 2017-02-11 11:17:33 +00:00
stm32-adc-core.c iio: adc: stm32: add optional dma support 2017-01-29 12:49:17 +00:00
stm32-adc-core.h iio: adc: stm32: add optional dma support 2017-01-29 12:49:17 +00:00
stm32-adc.c iio: adc: stm32: add dt option to set resolution 2017-04-03 20:46:01 +01:00
stx104.c iio: stx104: Set parent device 2017-02-19 11:53:05 +00:00
sun4i-gpadc-iio.c iio: adc: sun4i-gpadc-iio: add support for A33 thermal sensor 2017-04-08 17:35:47 +01:00
ti_am335x_adc.c iio: adc: ti_am335x_adc: fix fifo overrun recovery 2017-03-15 19:47:23 +00:00
ti-adc081c.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ti-adc084s021.c iio: adc: add driver for the ti-adc084s021 chip 2017-05-14 16:34:11 +01:00
ti-adc128s052.c iio: adc: add missing of_node references to iio_dev 2016-07-03 13:40:08 +01:00
ti-adc161s626.c iio: adc: ti-adc161s626: add regulator support 2016-09-27 20:33:03 +01:00
ti-adc0832.c iio: ti-adc0832: add triggered buffer support 2016-10-23 19:34:25 +01:00
ti-adc12138.c iio: adc: add ADC12130/ADC12132/ADC12138 ADC driver 2016-08-31 18:10:36 +01:00
ti-ads1015.c iio: adc: ti-ads1015: Add OF device ID table 2017-03-19 10:56:58 +00:00
ti-ads7950.c iio: adc: ti-ads7950: Change regulator matching string to "vref" 2017-01-15 13:56:08 +00:00
ti-ads8688.c iio: devm_regulator_get_optional never returns NULL 2016-09-05 21:09:38 +01:00
ti-tlc4541.c iio: adc: tlc4541: add support for TI tlc4541 adc 2017-01-22 13:21:28 +00:00
twl4030-madc.c
twl6030-gpadc.c
vf610_adc.c iio: adc: Remove unnecessary cast on void pointer 2017-04-02 09:46:25 +01:00
viperboard_adc.c
xilinx-xadc-core.c iio: adc: xilinx: Fix error handling 2017-02-25 16:39:32 +00:00
xilinx-xadc-events.c iio:core: timestamping clock selection support 2016-06-30 19:41:38 +01:00
xilinx-xadc.h