BMC/Intel-BMC/linux.git/drivers/iio/adc, branch dev-4.17

iio: adc: ad7791: remove sample freq sysfs attributes

2018-07-03T09:27:00+00:00

commit 7eb6b35d93c356f1afebbfb808bc296d6351e708 upstream. In the current state, these attributes are broken, because they are registered already, and the kernel throws a warning. The first registration happens via the `IIO_CHAN_INFO_SAMP_FREQ` flag from the `ad_sigma_delta` driver. In this commit these attrs are removed, and in the following the IIO_CHAN_INFO_SAMP_FREQ behavior will be implemented, which replaces these hooks. This is done to make things a bit easier to review as there is a bit of overlap in the patch if it's done all at once. Fixes: a13e831fcaa7 ("staging: iio: ad7192: implement IIO_CHAN_INFO_SAMP_FREQ") Signed-off-by: Alexandru Ardelean Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

Merge tag 'iio-fixes-for-4.17a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

2018-05-09T15:08:29+00:00

Jonathan writes: First round of IIO fixes for the 4.17 cycle. * core - fix up some issues with overflow etc around wrong types for some fo the kfifo handling functions. Seems unlikely this would be triggered in reality but the fixes are simple so let's tidy them up. Second patch deals with checking the userspace value passed for length for potential overflow. * ad7793 - Catch up with changes to the ad_sigma_delta core and use read_raw / write_raw iwth IIO_CHAN_INFO_SAMP_FEW to handle sampling frequency control. * at91-sama5d2 - Channel config for differential channels was completely broken. - Missing Kconfig dependency for buffer support. * hid-sensor - Fix an issue with powering up after resume due to wrong reference counting. * stm32-dfsdm - Fix an issue with second writes of the oversampling settings failing. - Fix an issue with the sample rate being set to half of requested value when particular clock source is used.

iio: adc: select buffer for at91-sama5d2_adc

2018-04-21T14:57:10+00:00

We need to select the buffer code, otherwise we get build errors with undefined functions on the trigger and buffer, if we select just IIO and then AT91_SAMA5D2_ADC from menuconfig This adds a Kconfig 'select' statement like other ADC drivers have it already. Fixes: 5e1a1da0f8c9 ("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support") Signed-off-by: Eugen Hristev Cc: Signed-off-by: Jonathan Cameron

iio: adc: at91-sama5d2_adc: fix channel configuration for differential channels

2018-04-15T19:21:33+00:00

When iterating through the channels, the index in the array is not the scan index. Added an xlate function to translate to the proper index. The result of the bug is that the channel array is indexed with a wrong index, thus instead of the proper channel, we access invalid memory, which may lead to invalid results and/or corruption. This will be used also for devicetree channel xlate. Fixes: 5e1a1da0f ("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support") Fixes: 073c66201 ("iio: adc: at91-sama5d2_adc: add support for DMA") Signed-off-by: Eugen Hristev Cc: Signed-off-by: Jonathan Cameron

Merge tag 'gpio-v4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

2018-04-05T16:51:41+00:00

Pull GPIO updates from Linus Walleij: "This is the bulk of GPIO changes for the v4.17 kernel cycle: New drivers: - Nintendo Wii GameCube GPIO, known as "Hollywood" - Raspberry Pi mailbox service GPIO expander - Spreadtrum main SC9860 SoC and IEC GPIO controllers. Improvements: - Implemented .get_multiple() callback for most of the high-performance industrial GPIO cards for the ISA bus. - ISA GPIO drivers now select the ISA_BUS_API instead of depending on it. This is merged with the same pattern for all the ISA drivers and some other Kconfig cleanups related to this. Cleanup: - Delete the TZ1090 GPIO drivers following the deletion of this SoC from the ARM tree. - Move the documentation over to driver-api to conform with the rest of the kernel documentation build. - Continue to make the GPIO drivers include only and not the too broad that we want to get rid of. - Managed to remove VLA allocation from two drivers pending more fixes in this area for the next merge window. - Misc janitorial fixes" * tag 'gpio-v4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (77 commits) gpio: Add Spreadtrum PMIC EIC driver support gpio: Add Spreadtrum EIC driver support dt-bindings: gpio: Add Spreadtrum EIC controller documentation gpio: ath79: Fix potential NULL dereference in ath79_gpio_probe() pinctrl: qcom: Don't allow protected pins to be requested gpiolib: Support 'gpio-reserved-ranges' property gpiolib: Change bitmap allocation to kmalloc_array gpiolib: Extract mask allocation into subroutine dt-bindings: gpio: Add a gpio-reserved-ranges property gpio: mockup: fix a potential crash when creating debugfs entries gpio: pca953x: add compatibility for pcal6524 and pcal9555a gpio: dwapb: Add support for a bus clock gpio: Remove VLA from xra1403 driver gpio: Remove VLA from MAX3191X driver gpio: ws16c48: Implement get_multiple callback gpio: gpio-mm: Implement get_multiple callback gpio: 104-idi-48: Implement get_multiple callback gpio: 104-dio-48e: Implement get_multiple callback gpio: pcie-idio-24: Implement get_multiple/set_multiple callbacks gpio: pci-idio-16: Implement get_multiple callback ...

Merge 4.16-rc7 into staging-next

2018-03-28T11:33:37+00:00

We want the IIO and staging driver fixes in here as well. Signed-off-by: Greg Kroah-Hartman

Merge tag 'v4.16-rc5' into devel

2018-03-18T16:48:59+00:00

Linux 4.16-rc5 merged into the GPIO devel branch to resolve a nasty conflict between fixes and devel in the RCAR driver. Signed-off-by: Linus Walleij

iio: adc: stm32-dfsdm: fix sample rate for div2 spi clock

2018-03-17T22:33:21+00:00

When channel clk source is set to "CLKOUT_F" or "CLKOUT_R" (e.g. div2), sample rate is currently set to half the requested value. Fixes: eca949800d2d ("IIO: ADC: add stm32 DFSDM support for PDM microphone") Signed-off-by: Fabrice Gasnier Acked-by: Arnaud Pouliquen Cc: Signed-off-by: Jonathan Cameron

iio: adc: stm32-dfsdm: fix successive oversampling settings

2018-03-17T22:32:31+00:00

When doing successive oversampling settings, it may fail to update filter parameters silently: - First time oversampling is being set, it will be successful, as fl->res is 0 initially. - Next attempts with various oversamp value may return 0 (success), but keep previous filter parameters, due to 'res' never reaches above or equal current 'fl->res'. This is particularly true when setting sampling frequency (that relies on oversamp). Typical failure without error: - run 1st test @16kHz samp freq will succeed - run new test @8kHz will succeed as well - run new test @16kHz (again): sample rate will remain 8kHz without error Fixes: e2e6771c6462 ("IIO: ADC: add STM32 DFSDM sigma delta ADC support") Signed-off-by: Fabrice Gasnier Acked-by: Arnaud Pouliquen Cc: Signed-off-by: Jonathan Cameron

iio: ad7793: implement IIO_CHAN_INFO_SAMP_FREQ

2018-03-17T20:33:01+00:00

This commit is a follow-up to changes made to ad_sigma_delta.h in staging: iio: ad7192: implement IIO_CHAN_INFO_SAMP_FREQ which broke ad7793 as it was not altered to match those changes. This driver predates the availability of IIO_CHAN_INFO_SAMP_FREQ attribute wherein usage has some advantages like it can be accessed by in-kernel consumers as well as reduces the code size. Therefore, use IIO_CHAN_INFO_SAMP_FREQ to implement the sampling_frequency attribute instead of using IIO_DEV_ATTR_SAMP_FREQ() macro. Move code from the functions associated with IIO_DEV_ATTR_SAMP_FREQ() into respective read and write hooks with the mask set to IIO_CHAN_INFO_SAMP_FREQ. Fixes: a13e831fcaa7 ("staging: iio: ad7192: implement IIO_CHAN_INFO_SAMP_FREQ") Signed-off-by: Michael Nosthoff Cc: Signed-off-by: Jonathan Cameron