2035 Commits

Author SHA1 Message Date
Colin Ian King
6abcb19e0a iio: adc: ad4130: Fix spelling mistake "diffreential" -> "differential"
There is a spelling mistake in an error message. Fix it.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Link: https://lore.kernel.org/r/20221104093148.167765-1-colin.i.king@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:44:03 +00:00
Cosmin Tanislav
62094060cf iio: adc: ad4130: add AD4130 driver
AD4130-8 is an ultra-low power, high precision, measurement solution for
low bandwidth battery operated applications.

The fully integrated AFE (Analog Front-End) includes a multiplexer for up
to 16 single-ended or 8 differential inputs, PGA (Programmable Gain
Amplifier), 24-bit Sigma-Delta ADC, on-chip reference and oscillator,
selectable filter options, smart sequencer, sensor biasing and excitation
options, diagnostics, and a FIFO buffer.

Signed-off-by: Cosmin Tanislav <cosmin.tanislav@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20221021104115.1812486-3-demonsingur@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:44:01 +00:00
Matti Vaittinen
3dfa1d4f63 iio: adc: max1363: simplify using devm_regulator_get_enable()
Drop open-coded pattern: 'devm_regulator_get(), regulator_enable(),
add_action_or_reset(regulator_disable)' and use the
devm_regulator_get_enable() and drop the pointer to the regulator.
This simplifies code and makes it less tempting to add manual control
for the regulator which is also controlled by devm.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/1286ea127d190e5708a0aaff271819b2d3f8802d.1660934107.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:44:01 +00:00
Matti Vaittinen
f55c8e6696 iio: adc: max1241: simplify using devm_regulator_get_enable()
Drop open-coded pattern: 'devm_regulator_get(), regulator_enable(),
add_action_or_reset(regulator_disable)' and use the
devm_regulator_get_enable() and drop the pointer to the regulator.
This simplifies code and makes it less tempting to add manual control
for the regulator which is also controlled by devm.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Alexandru Lazar <alazar@startmail.com>
Link: https://lore.kernel.org/r/7c759bf6c06e72ae70bffeebc1939d9903427278.1660934107.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:44:01 +00:00
Matti Vaittinen
fd5b6c48ec iio: adc: ad7606: simplify using devm_regulator_get_enable()
Drop open-coded pattern: 'devm_regulator_get(), regulator_enable(),
add_action_or_reset(regulator_disable)' and use the
devm_regulator_get_enable() and drop the pointer to the regulator.
This simplifies code and makes it less tempting to add manual control
for the regulator which is also controlled by devm.

Whilst here also switch to dev_err_probe() to provide more information
if a deferred probe occurs.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/521c52f5a9bdc2db04d5775b36df4b233ae338da.1660934107.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:44:00 +00:00
Matti Vaittinen
7ff0ad35aa iio: adc: ad7476: simplify using devm_regulator_get_enable()
Drop open-coded pattern: 'devm_regulator_get(), regulator_enable(),
add_action_or_reset(regulator_disable)' and use the
devm_regulator_get_enable()

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/33070d66b9b976acac1cee5570facef9278b6b61.1660934107.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:44:00 +00:00
Matti Vaittinen
1ccef2e6e9 iio: adc: ad7192: Simplify using devm_regulator_get_enable()
Use devm_regulator_get_enable() instead of open coded get, enable,
add-action-to-disable-at-detach - pattern. Also drop the seemingly unused
struct member 'dvdd'.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Link: https://lore.kernel.org/r/9719c445c095d3d308e2fc9f4f93294f5806c41c.1660934107.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:44:00 +00:00
Olivier Moysan
7cb2303dd0 iio: adc: stm32: manage min sampling time on all internal channels
Force minimum sampling time for all internal channels according
to datasheet requirement. This value can be increased through
DT st,min-sample-time-ns property.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20221012142205.13041-5-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:59 +00:00
Olivier Moysan
cf0fb80ae1 iio: adc: stm32-adc: add stm32mp13 support
Add STM32 ADC support for STM32MP13x SOCs family.

On STM32MP13x, each ADC peripheral has a single ADC block.
These ADC peripherals, ADC1 and ADC2, are fully independent.
This introduces changes in common registers handling.

Some features such as boost mode, channel preselection and
linear calibration are not supported by the STM32MP13x ADC.
Add diversity management for these features.

The STM32MP13x ADC introduces registers and bitfield variants
on existing features such as calibration factors and internal
channels. Add register diversity management.

Add also support for new internal channels VDDCPU and VDDQ_DDR.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20221012142205.13041-4-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:59 +00:00
ChiaEn Wu
c1404d1b65 iio: adc: mt6370: Add MediaTek MT6370 support
MediaTek MT6370 is a SubPMIC consisting of a single cell battery charger
with ADC monitoring, RGB LEDs, dual channel flashlight, WLED backlight
driver, display bias voltage supply, one general purpose LDO, and the
USB Type-C & PD controller complies with the latest USB Type-C and PD
standards.

Add support for the MT6370 ADC driver for system monitoring, including
charger current, voltage, and temperature.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: ChiaEn Wu <chiaen_wu@richtek.com>
Link: https://lore.kernel.org/r/81ec58ae89030e48508d6810396de2679c40d26c.1665488982.git.chiaen_wu@richtek.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:59 +00:00
Ibrahim Tilki
a44ef7c460 iio: adc: add max11410 adc driver
Adding support for max11410 24-bit, 1.9ksps delta-sigma adc which
has 3 differential reference and 10 differential channel inputs.
Inputs and references can be buffered internally. Inputs can also
be amplified with internal PGA.

Device has four digital filter modes: FIR50/60, FIR50, FIR60 and SINC4.
FIR 50Hz and 60Hz rejections can be enabled/disabled separately.
Digital filter selection affects sampling frequency range so driver
has to consider the configured filter when configuring sampling frequency.

Signed-off-by: Ibrahim Tilki <Ibrahim.Tilki@analog.com>
Link: https://lore.kernel.org/r/20221003105903.229-2-Ibrahim.Tilki@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:59 +00:00
Nuno Sá
4e15cad8db iio: adc: vf610_adc: vf610_adc: do not use internal iio_dev lock
In order to drop the internal lock usage we needed two different things:

1) The first place where 'mlock' was being used was a typical case where
iio_device_claim_direct_mode() fits perfectly.
2) In the second case, it was being used to prevent concurrent accesses
to the device and shared data but nothing was being enforced with
regards to buffering (i.e, there was nothing preventing from changing
the conversion mode while buffering). Hence, in this case, a new lock
was introduced in the state structure.

Note that the goal is not to introduce any functional change and that is
the reason why a new lock was introduced to guarantee 2).

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-11-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:58 +00:00
Nuno Sá
f2bdea865e iio: adc: vf610_adc: add helper function to read samples
This is a precursor change to make it simpler to remove the 'mlock'
usage. Having the code in it's own helper function, also makes it easier
to read the error paths.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-10-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:58 +00:00
Nuno Sá
8433aa3591 iio: adc: sc27xx_adc: do not use internal iio_dev lock
The iio_device lock is only meant for internal use. Hence define a
device local lock to protect against concurrent accesses.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-9-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:58 +00:00
Nuno Sá
bb690935df iio: adc: rockchip_saradc: do not use internal iio_dev lock
The iio_device lock is only meant for internal use. Hence define a
device local lock to protect against concurrent accesses.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20221004134909.1692021-8-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:58 +00:00
Nuno Sá
d0c09264f1 iio: adc: meson_saradc: do not use internal iio_dev lock
The iio_device lock is only meant for internal use. Hence define a
device local lock to protect against concurrent accesses.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-7-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:58 +00:00
Nuno Sá
da8091f8ac iio: adc: ltc2947-core: do not use internal iio_dev lock
The iio_device lock is only meant for internal use. Hence define a
device local lock to protect against concurrent accesses.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-6-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:58 +00:00
Nuno Sá
98c4fb93d1 iio: adc: lpc32xx_adc: do not use internal iio_dev lock
The iio_device lock is only meant for internal use. Hence define a
device local lock to protect against concurrent accesses.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-5-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:58 +00:00
Nuno Sá
7dde7ec2a8 iio: adc: imx7d_adc: do not use internal iio_dev lock
The iio_device lock is only meant for internal use. Hence define a
device local lock to protect against concurrent accesses.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Haibo Chen <haibo.chen@nxp.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-4-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:57 +00:00
Nuno Sá
ed3aa67167 iio: adc: axp288_adc: do not use internal iio_dev lock
The iio_device lock is only meant for internal use. Hence define a
device local lock to protect against concurrent accesses.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-3-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:57 +00:00
Nuno Sá
8f347c565d iio: adc: ad799x: do not use internal iio_dev lock
'mlock' was being grabbed when setting the device frequency. In order to
not introduce any functional change a new lock is added. With that in
mind, the lock also needs to be grabbed in the places where 'mlock' is
since it was also being used to protect st->config against the current
device state.

On the other places the lock was being used, we can just drop
it since we are only doing one i2c bus read/write which is already
safe.

While at it, properly include "mutex.h" for mutex related APIs.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20221004134909.1692021-2-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:57 +00:00
Wei Yongjun
3a258747a0 iio: adc: ad7124: Silence no spi_device_id warnings
SPI devices use the spi_device_id for module autoloading even on
systems using device tree, after commit 5fa6863ba692 ("spi: Check
we have a spi_device_id for each DT compatible"), kernel warns as
follows since the spi_device_id is missing:

SPI driver ad7124 has no spi_device_id for adi,ad7124-4
SPI driver ad7124 has no spi_device_id for adi,ad7124-8

Add spi_device_id entries to silence the warnings, and ensure driver
module autoloading works.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20220921163620.805879-6-weiyongjun@huaweicloud.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:57 +00:00
Wei Yongjun
935779eac0 iio: adc: ad7192: Silence no spi_device_id warnings
SPI devices use the spi_device_id for module autoloading even on
systems using device tree, after commit 5fa6863ba692 ("spi: Check
we have a spi_device_id for each DT compatible"), kernel warns as
follows since the spi_device_id is missing:

SPI driver ad7192 has no spi_device_id for adi,ad7190
SPI driver ad7192 has no spi_device_id for adi,ad7193
SPI driver ad7192 has no spi_device_id for adi,ad7195

Add spi_device_id entries to silence the warnings, and ensure driver
module autoloading works.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20220921163620.805879-5-weiyongjun@huaweicloud.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:57 +00:00
Wei Yongjun
283026528e iio: adc: ad9467: Silence no spi_device_id warnings
SPI devices use the spi_device_id for module autoloading even on
systems using device tree, after commit 5fa6863ba692 ("spi: Check
we have a spi_device_id for each DT compatible"), kernel warns as
follows since the spi_device_id is missing:

SPI driver ad9467 has no spi_device_id for adi,ad9265
SPI driver ad9467 has no spi_device_id for adi,ad9434

Add spi_device_id entries to silence the warnings, and ensure driver
module autoloading works.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20220921163620.805879-4-weiyongjun@huaweicloud.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:57 +00:00
Wei Yongjun
4eb61e1a33 iio: adc: ti-ads131e08: Silence no spi_device_id warnings
SPI devices use the spi_device_id for module autoloading even on
systems using device tree, after commit 5fa6863ba692 ("spi: Check
we have a spi_device_id for each DT compatible"), kernel warns as
follows since the spi_device_id is missing:

SPI driver ads131e08 has no spi_device_id for ti,ads131e04
SPI driver ads131e08 has no spi_device_id for ti,ads131e06

Add spi_device_id entries to silence the warnings, and ensure driver
module autoloading works.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Link: https://lore.kernel.org/r/20220921163620.805879-2-weiyongjun@huaweicloud.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:57 +00:00
Marcus Folkesson
8cf5f03291 iio: adc: mcp3911: add support to set PGA
Add support for setting the Programmable Gain Amplifiers by adjust the
scale value.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220922194639.1118971-1-marcus.folkesson@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:43:57 +00:00
Nuno Sá
20228a1d5a iio: adc: ad_sigma_delta: do not use internal iio_dev lock
Drop 'mlock' usage by making use of iio_device_claim_direct_mode().
This change actually makes sure we cannot do a single conversion while
buffering is enable. Note there was a potential race in the previous
code since we were only acquiring the lock after checking if the bus is
enabled.

Fixes: af3008485ea0 ("iio:adc: Add common code for ADI Sigma Delta devices")
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: <Stable@vger.kernel.org> #No rush as race is very old.
Link: https://lore.kernel.org/r/20220920112821.975359-2-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-23 19:41:11 +00:00
Billy Tsai
fdd0d6b2eb iio: adc: aspeed: Remove the trim valid dts property.
The dts property "aspeed,trim-data-valid" is currently used to determine
whether to read trimming data from the OTP register. If this is set on
a device without valid trimming data in the OTP the ADC will not function
correctly. This patch drops the use of this property and instead uses the
default (unprogrammed) OTP value of 0 to detect when a fallback value of
0x8 should be used rather then the value read from the OTP.

Fixes: d0a4c17b4073 ("iio: adc: aspeed: Get and set trimming data.")
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Link: https://lore.kernel.org/r/20221114025057.10843-1-billy_tsai@aspeedtech.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-14 20:20:08 +00:00
Yang Yingliang
65f2030160 iio: adc: at91_adc: fix possible memory leak in at91_adc_allocate_trigger()
If iio_trigger_register() returns error, it should call iio_trigger_free()
to give up the reference that hold in iio_trigger_alloc(), so that it can
call iio_trig_release() to free memory when the refcount hit to 0.

Fixes: 0e589d5fb317 ("ARM: AT91: IIO: Add AT91 ADC driver.")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20221024084511.815096-1-yangyingliang@huawei.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-01 08:48:13 +00:00
Saravanan Sekar
ca1547ab15 iio: adc: mp2629: fix potential array out of bound access
Add sentinel at end of maps to avoid potential array out of
bound access in iio core.

Fixes: 7abd9fb64682 ("iio: adc: mp2629: Add support for mp2629 ADC driver")
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Link: https://lore.kernel.org/r/20221029093000.45451-4-sravanhome@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-11-01 08:48:02 +00:00
Saravanan Sekar
1eb20332a0 iio: adc: mp2629: fix wrong comparison of channel
Input voltage channel enum is compared against iio address instead
of the channel.

Fixes: 7abd9fb64682 ("iio: adc: mp2629: Add support for mp2629 ADC driver")
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20221029093000.45451-2-sravanhome@gmail.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-29 13:27:54 +01:00
Claudiu Beznea
207777dc30 iio: adc: at91-sama5d2_adc: get rid of 5 degrees Celsius adjustment
On SAMA7G5 final chip version there is no need for 5 degrees Celsius
adjustment when computing junction temperature, thus, remove it.

Fixes: 5ab38b81895c ("iio: adc: at91-sama5d2_adc: add support for temperature sensor")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/20221020102705.3639204-1-claudiu.beznea@microchip.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-24 18:48:57 +01:00
Dmitry Torokhov
4f494028c7 iio: adc: twl4030-madc: add missing of.h include
The driver is using of_device_id/of_match_ptr() and therefore needs
to include of.h header. We used to get this definition indirectly via
inclusion of matrix_keypad.h from twl.h, but we are cleaning up
matrix_keypad.h from unnecessary includes.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20220927154611.3330871-3-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2022-10-24 05:57:16 -07:00
Matti Vaittinen
54246b9034 iio: at91-sama5d2_adc: Fix unsafe buffer attributes
The iio_triggered_buffer_setup_ext() was changed by
commit 15097c7a1adc ("iio: buffer: wrap all buffer attributes into iio_dev_attr")
to silently expect that all attributes given in buffer_attrs array are
device-attributes. This expectation was not forced by the API - and some
drivers did register attributes created by IIO_CONST_ATTR().

The added attribute "wrapping" does not copy the pointer to stored
string constant and when the sysfs file is read the kernel will access
to invalid location.

Change the IIO_CONST_ATTRs from the driver to IIO_DEVICE_ATTR in order
to prevent the invalid memory access.

Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Fixes: 15097c7a1adc ("iio: buffer: wrap all buffer attributes into iio_dev_attr")
Tested-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/be69775aa302159f088b8b91894e6ec449bca65b.1664782676.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-17 08:51:26 +01:00
Olivier Moysan
174dac5dc8 iio: adc: stm32-adc: fix channel sampling time init
Fix channel init for ADC generic channel bindings.
In generic channel initialization, stm32_adc_smpr_init() is called to
initialize channel sampling time. The "st,min-sample-time-ns" property
is an optional property. If it is not defined, stm32_adc_smpr_init() is
currently skipped.
However stm32_adc_smpr_init() must always be called, to force a minimum
sampling time for the internal channels, as the minimum sampling time is
known. Make stm32_adc_smpr_init() call unconditional.

Fixes: 796e5d0b1e9b ("iio: adc: stm32-adc: use generic binding for sample-time")
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20221012142205.13041-2-olivier.moysan@foss.st.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-17 08:51:26 +01:00
Marcus Folkesson
aa6c77d05e iio: adc: mcp3911: mask out device ID in debug prints
The Device ID should not be included when printing register.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Link: https://lore.kernel.org/r/20221010194654.676525-1-marcus.folkesson@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-17 08:51:26 +01:00
Marcus Folkesson
815f1647a6 iio: adc: mcp3911: use correct id bits
The device ID should be shifted 6 bits to left according to datasheet.

Fixes: 3a89b289df5d ("iio: adc: add support for mcp3911")
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Link: https://lore.kernel.org/r/20221010194641.676484-1-marcus.folkesson@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-17 08:51:26 +01:00
Marcus Folkesson
a83695a666 iio: adc: mcp3911: return proper error code on failure to allocate trigger
smatch warnings:
drivers/iio/adc/mcp3911.c:441 mcp3911_probe() warn: passing zero to 'PTR_ERR'

Fixes: 08a65f61db69 ("iio: adc: mcp3911: add support for interrupts")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Link: https://lore.kernel.org/r/20220927092537.94663-1-marcus.folkesson@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-17 08:51:26 +01:00
Dan Carpenter
7578847b59 iio: adc: mcp3911: fix sizeof() vs ARRAY_SIZE() bug
This code uses sizeof() instead of ARRAY_SIZE() so it reads beyond the
end of the mcp3911_osr_table[] array.

Fixes: 6d965885f4ea ("iio: adc: mcp3911: add support for oversampling ratio")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Link: https://lore.kernel.org/r/YzFsjY3xLHUQMjVr@kili
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-10-17 08:51:26 +01:00
Linus Torvalds
a09476668e Char/Misc and other driver changes for 6.1-rc1
Here is the large set of char/misc and other small driver subsystem
 changes for 6.1-rc1.  Loads of different things in here:
   - IIO driver updates, additions, and changes.  Probably the largest
     part of the diffstat
   - habanalabs driver update with support for new hardware and features,
     the second largest part of the diff.
   - fpga subsystem driver updates and additions
   - mhi subsystem updates
   - Coresight driver updates
   - gnss subsystem updates
   - extcon driver updates
   - icc subsystem updates
   - fsi subsystem updates
   - nvmem subsystem and driver updates
   - misc driver updates
   - speakup driver additions for new features
   - lots of tiny driver updates and cleanups
 
 All of these have been in the linux-next tree for a while with no
 reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the large set of char/misc and other small driver subsystem
  changes for 6.1-rc1. Loads of different things in here:

   - IIO driver updates, additions, and changes. Probably the largest
     part of the diffstat

   - habanalabs driver update with support for new hardware and
     features, the second largest part of the diff.

   - fpga subsystem driver updates and additions

   - mhi subsystem updates

   - Coresight driver updates

   - gnss subsystem updates

   - extcon driver updates

   - icc subsystem updates

   - fsi subsystem updates

   - nvmem subsystem and driver updates

   - misc driver updates

   - speakup driver additions for new features

   - lots of tiny driver updates and cleanups

  All of these have been in the linux-next tree for a while with no
  reported issues"

* tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (411 commits)
  w1: Split memcpy() of struct cn_msg flexible array
  spmi: pmic-arb: increase SPMI transaction timeout delay
  spmi: pmic-arb: block access for invalid PMIC arbiter v5 SPMI writes
  spmi: pmic-arb: correct duplicate APID to PPID mapping logic
  spmi: pmic-arb: add support to dispatch interrupt based on IRQ status
  spmi: pmic-arb: check apid against limits before calling irq handler
  spmi: pmic-arb: do not ack and clear peripheral interrupts in cleanup_irq
  spmi: pmic-arb: handle spurious interrupt
  spmi: pmic-arb: add a print in cleanup_irq
  drivers: spmi: Directly use ida_alloc()/free()
  MAINTAINERS: add TI ECAP driver info
  counter: ti-ecap-capture: capture driver support for ECAP
  Documentation: ABI: sysfs-bus-counter: add frequency & num_overflows items
  dt-bindings: counter: add ti,am62-ecap-capture.yaml
  counter: Introduce the COUNTER_COMP_ARRAY component type
  counter: Consolidate Counter extension sysfs attribute creation
  counter: Introduce the Count capture component
  counter: 104-quad-8: Add Signal polarity component
  counter: Introduce the Signal polarity component
  counter: interrupt-cnt: Implement watch_validate callback
  ...
2022-10-08 08:56:37 -07:00
Linus Torvalds
b86406d42a * 'remove' callback converted to return void. Big change with trivial
fixes all over the tree. Other subsystems depending on this change
   have been asked to pull an immutable topic branch for this.
 * new driver for Microchip PCI1xxxx switch
 * heavy refactoring of the Mellanox BlueField driver
 * we prefer async probe in the i801 driver now
 * the rest is usual driver updates (support for more SoCs, some
   refactoring, some feature additions)
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Merge tag 'i2c-for-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:

 - 'remove' callback converted to return void. Big change with trivial
   fixes all over the tree. Other subsystems depending on this change
   have been asked to pull an immutable topic branch for this.

 - new driver for Microchip PCI1xxxx switch

 - heavy refactoring of the Mellanox BlueField driver

 - we prefer async probe in the i801 driver now

 - the rest is usual driver updates (support for more SoCs, some
   refactoring, some feature additions)

* tag 'i2c-for-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (37 commits)
  i2c: pci1xxxx: prevent signed integer overflow
  i2c: acpi: Replace zero-length array with DECLARE_FLEX_ARRAY() helper
  i2c: i801: Prefer async probe
  i2c: designware-pci: Use standard pattern for memory allocation
  i2c: designware-pci: Group AMD NAVI quirk parts together
  i2c: microchip: pci1xxxx: Add driver for I2C host controller in multifunction endpoint of pci1xxxx switch
  docs: i2c: slave-interface: return errno when handle I2C_SLAVE_WRITE_REQUESTED
  i2c: mlxbf: remove device tree support
  i2c: mlxbf: support BlueField-3 SoC
  i2c: cadence: Add standard bus recovery support
  i2c: mlxbf: add multi slave functionality
  i2c: mlxbf: support lock mechanism
  macintosh/ams: Adapt declaration of ams_i2c_remove() to earlier change
  i2c: riic: Use devm_platform_ioremap_resource()
  i2c: mlxbf: remove IRQF_ONESHOT
  dt-bindings: i2c: rockchip: add rockchip,rk3128-i2c
  dt-bindings: i2c: renesas,rcar-i2c: Add r8a779g0 support
  i2c: tegra: Add GPCDMA support
  i2c: scmi: Convert to be a platform driver
  i2c: rk3x: Add rv1126 support
  ...
2022-10-04 18:54:33 -07:00
Linus Torvalds
a5088ee725 Thermal control updates for 6.1-rc1
- Rework the device tree initialization, convert the drivers to the
    new API and remove the old OF code (Daniel Lezcano).
 
  - Fix return value to -ENODEV when searching for a specific thermal
    zone which does not exist (Daniel Lezcano).
 
  - Fix the return value inspection in of_thermal_zone_find() (Dan
    Carpenter).
 
  - Fix kernel panic when KASAN is enabled as it detects use after
    free when unregistering a thermal zone (Daniel Lezcano).
 
  - Move the set_trip ops inside the therma sysfs code (Daniel Lezcano).
 
  - Remove unnecessary error message as it is already shown in the
    underlying function (Jiapeng Chong).
 
  - Rework the monitoring path and move the locks upper in the call
    stack to fix some potentials race windows (Daniel Lezcano).
 
  - Fix lockdep_assert() warning introduced by the lock rework (Daniel
    Lezcano).
 
  - Do not lock thermal zone mutex in the user space governor (Rafael
    Wysocki).
 
  - Revert the Mellanox 'hotter thermal zone' feature because it is
    already handled in the thermal framework core code (Daniel Lezcano).
 
  - Increase maximum number of trip points in the thermal core (Sumeet
    Pawnikar).
 
  - Replace strlcpy() with unused retval with strscpy() in the core
    thermal control code (Wolfram Sang).
 
  - Use module_pci_driver() macro in the int340x processor_thermal
    driver (Shang XiaoJing).
 
  - Use get_cpu() instead of smp_processor_id() in the intel_powerclamp
    thermal driver to prevent it from crashing and remove unused
    accounting for IRQ wakes from it (Srinivas Pandruvada).
 
  - Consolidate priv->data_vault checks in int340x_thermal (Rafael
    Wysocki).
 
  - Check the policy first in cpufreq_cooling_register() (Xuewen Yan).
 
  - Drop redundant error message from da9062-thermal (zhaoxiao).
 
  - Drop of_match_ptr() from thermal_mmio (Jean Delvare).
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Merge tag 'thermal-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control updates from Rafael Wysocki:
 "The most significant part of this update is the thermal control DT
  initialization rework from Daniel Lezcano and the following conversion
  of drivers to use the new API introduced by it

  Apart from that, the maximum number of trip points in a thermal zone
  is increased and there are some fixes and code cleanups

  Specifics:

   - Rework the device tree initialization, convert the drivers to the
     new API and remove the old OF code (Daniel Lezcano)

   - Fix return value to -ENODEV when searching for a specific thermal
     zone which does not exist (Daniel Lezcano)

   - Fix the return value inspection in of_thermal_zone_find() (Dan
     Carpenter)

   - Fix kernel panic when KASAN is enabled as it detects use after free
     when unregistering a thermal zone (Daniel Lezcano)

   - Move the set_trip ops inside the therma sysfs code (Daniel Lezcano)

   - Remove unnecessary error message as it is already shown in the
     underlying function (Jiapeng Chong)

   - Rework the monitoring path and move the locks upper in the call
     stack to fix some potentials race windows (Daniel Lezcano)

   - Fix lockdep_assert() warning introduced by the lock rework (Daniel
     Lezcano)

   - Do not lock thermal zone mutex in the user space governor (Rafael
     Wysocki)

   - Revert the Mellanox 'hotter thermal zone' feature because it is
     already handled in the thermal framework core code (Daniel Lezcano)

   - Increase maximum number of trip points in the thermal core (Sumeet
     Pawnikar)

   - Replace strlcpy() with unused retval with strscpy() in the core
     thermal control code (Wolfram Sang)

   - Use module_pci_driver() macro in the int340x processor_thermal
     driver (Shang XiaoJing)

   - Use get_cpu() instead of smp_processor_id() in the intel_powerclamp
     thermal driver to prevent it from crashing and remove unused
     accounting for IRQ wakes from it (Srinivas Pandruvada)

   - Consolidate priv->data_vault checks in int340x_thermal (Rafael
     Wysocki)

   - Check the policy first in cpufreq_cooling_register() (Xuewen Yan)

   - Drop redundant error message from da9062-thermal (zhaoxiao)

   - Drop of_match_ptr() from thermal_mmio (Jean Delvare)"

* tag 'thermal-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (55 commits)
  thermal: core: Increase maximum number of trip points
  thermal: int340x: processor_thermal: Use module_pci_driver() macro
  thermal: intel_powerclamp: Remove accounting for IRQ wakes
  thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
  thermal: int340x_thermal: Consolidate priv->data_vault checks
  thermal: cpufreq_cooling: Check the policy first in cpufreq_cooling_register()
  thermal: Drop duplicate words from comments
  thermal: move from strlcpy() with unused retval to strscpy()
  thermal: da9062-thermal: Drop redundant error message
  thermal/drivers/thermal_mmio: Drop of_match_ptr()
  thermal: gov_user_space: Do not lock thermal zone mutex
  Revert "mlxsw: core: Add the hottest thermal zone detection"
  thermal/core: Fix lockdep_assert() warning
  thermal/core: Move the mutex inside the thermal_zone_device_update() function
  thermal/core: Move the thermal zone lock out of the governors
  thermal/governors: Group the thermal zone lock inside the throttle function
  thermal/core: Rework the monitoring a bit
  thermal/core: Rearm the monitoring only one time
  thermal/drivers/qcom/spmi-adc-tm5: Remove unnecessary print function dev_err()
  thermal/of: Remove old OF code
  ...
2022-10-03 15:33:38 -07:00
Marcus Folkesson
6d965885f4 iio: adc: mcp3911: add support for oversampling ratio
The chip supports oversampling ratio, so expose it to userspace.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220815061625.35568-9-marcus.folkesson@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-09-21 21:15:10 +01:00
Marcus Folkesson
08a65f61db iio: adc: mcp3911: add support for interrupts
Make it possible to read values upon interrupts.
Configure Data Ready Signal Output Pin to either HiZ or push-pull and
use it as interrupt source.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220815061625.35568-7-marcus.folkesson@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-09-21 21:15:10 +01:00
Marcus Folkesson
5db9f38d39 iio: adc: mcp3911: add support for buffers
Add support for buffers to make the driver fit for more use cases.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220815061625.35568-6-marcus.folkesson@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-09-21 21:15:10 +01:00
Marcus Folkesson
0e0a07adaf iio: adc: mcp3911: use resource-managed version of iio_device_register
Keep using managed resources as much as possible.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220815061625.35568-5-marcus.folkesson@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-09-21 21:15:10 +01:00
Nuno Sá
096d2dac25 iio: adc: ad7923: support extended range
By default the driver was always setting the RANGE bit which means that
the analog input goes from 0 to VREF. However, we might want to have 0
to 2xVREF. This change adds a new Firmware property to allow for the
extended range while keeping the default behavior if nothing is provided.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220912081223.173584-3-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-09-21 18:42:55 +01:00
Nuno Sá
f4f43f01cf iio: adc: ad7923: fix channel readings for some variants
Some of the supported devices have 4 or 2 LSB trailing bits that should
not be taken into account. Hence we need to shift these bits out which
fits perfectly on the scan type shift property. This change fixes both
raw and buffered reads.

Fixes: f2f7a449707e ("iio:adc:ad7923: Add support for the ad7904/ad7914/ad7924")
Fixes: 851644a60d20 ("iio: adc: ad7923: Add support for the ad7908/ad7918/ad7928")
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220912081223.173584-2-nuno.sa@analog.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-09-21 18:42:55 +01:00
Olivier Moysan
548616242f iio: adc: stm32-adc: add id registers support
Add support of identification registers to STM32 ADC.

By default the ADC hardware instance number is retrieved from
the compatible configuration data. Get the available ADC number
per ADC block, from hardware configuration register,
when this register exists.

Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20220915135452.1712453-1-olivier.moysan@foss.st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-09-21 18:42:55 +01:00
Ciprian Regus
1695c52a12 drivers: iio: adc: ltc2497: Rename the LTC2499 iio device
Set the iio device's name based on the chip used for the
LTC2499 only. The most common way for IIO clients to interact
with a device is to address it based on it's name. By using
the dev_name() function, the name will be set based on a
i2c_client's kobj name, which has the format i2c_instance-i2c_address
(1-0076 for example). This is not ideal, since it makes a
requirement for userspace to have knowledge about the hardware
connections of the device.

The name field is set to NULL for the LTC2497 and LTC2496, so
that the old name can kept as it is, since changing it will
result in an ABI breakage.

Signed-off-by: Ciprian Regus <ciprian.regus@analog.com>
Link: https://lore.kernel.org/r/20220916140922.2506248-6-ciprian.regus@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2022-09-21 18:42:54 +01:00