kernel.git/drivers/iio/dac, branch linux-6.1.y

iio: dac: ad5686: add AD5695R to ad5686_chip_info_tbl

2026-02-06T15:44:11Z

commit 441ac29923c9172bc5e4b2c4f52ae756192f5715 upstream. The chip info for this variant (I2C, four channels, 14 bit, internal reference) seems to have been left out due to oversight, so ad5686_chip_info_tbl[ID_AD5695R] is all zeroes. Initialisation of an AD5695R still succeeds, but the resulting IIO device has no channels and no /dev/iio:device* node. Add the missing chip info to the table. Fixes: 4177381b4401 ("iio:dac:ad5686: Add AD5671R/75R/94/94R/95R/96/96R support") Signed-off-by: Andreas Kübrich Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: ad5421: use int type to store negative error codes

2025-10-19T14:23:13Z

commit 3379c900320954d768ed9903691fb2520926bbe3 upstream. Change the 'ret' variable in ad5421_update_ctrl() from unsigned int to int, as it needs to store either negative error codes or zero returned by ad5421_write_unlocked(). Fixes: 5691b23489db ("staging:iio:dac: Add AD5421 driver") Signed-off-by: Qianfeng Rong Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250901135726.17601-3-rongqianfeng@vivo.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: ad5360: use int type to store negative error codes

2025-10-19T14:23:13Z

commit f9381ece76de999a2065d5b4fdd87fa17883978c upstream. Change the 'ret' variable in ad5360_update_ctrl() from unsigned int to int, as it needs to store either negative error codes or zero returned by ad5360_write_unlocked(). Fixes: a3e2940c24d3 ("staging:iio:dac: Add AD5360 driver") Signed-off-by: Qianfeng Rong Reviewed-by: Andy Shevchenko Link: https://patch.msgid.link/20250901135726.17601-2-rongqianfeng@vivo.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: ad3552r: clear reset status flag

2025-03-13T11:53:23Z

commit e17b9f20da7d2bc1f48878ab2230523b2512d965 upstream. Clear reset status flag, to keep error status register clean after reset (ad3552r manual, rev B table 38). Reset error flag was left to 1, so debugging registers, the "Error Status Register" was dirty (0x01). It is important to clear this bit, so if there is any reset event over normal working mode, it is possible to detect it. Fixes: 8f2b54824b28 ("drivers:iio:dac: Add AD3552R driver support") Signed-off-by: Angelo Dureghello Link: https://patch.msgid.link/20250125-wip-bl-ad3552r-clear-reset-v2-1-aa3a27f3ff8c@baylibre.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: ad3552r: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig

2024-10-22T13:56:48Z

commit 5bede948670f447154df401458aef4e2fd446ba8 upstream. This driver makes use of triggered buffers, but does not select the required modules. Add the missing 'select IIO_BUFFER' and 'select IIO_TRIGGERED_BUFFER'. Fixes: 8f2b54824b28 ("drivers:iio:dac: Add AD3552R driver support") Signed-off-by: Javier Carrasco Link: https://patch.msgid.link/20241003-iio-select-v1-7-67c0385197cd@gmail.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: ad5766: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig

2024-10-22T13:56:48Z

commit 62ec3df342cca6a8eb7ed33fd4ac8d0fbfcb9391 upstream. This driver makes use of triggered buffers, but does not select the required modules. Add the missing 'select IIO_BUFFER' and 'select IIO_TRIGGERED_BUFFER'. Fixes: 885b9790c25a ("drivers:iio:dac:ad5766.c: Add trigger buffer") Signed-off-by: Javier Carrasco Link: https://patch.msgid.link/20241003-iio-select-v1-8-67c0385197cd@gmail.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: stm32-dac-core: add missing select REGMAP_MMIO in Kconfig

2024-10-22T13:56:47Z

commit 27b6aa68a68105086aef9f0cb541cd688e5edea8 upstream. This driver makes use of regmap_mmio, but does not select the required module. Add the missing 'select REGMAP_MMIO'. Fixes: 4d4b30526eb8 ("iio: dac: add support for stm32 DAC") Signed-off-by: Javier Carrasco Link: https://patch.msgid.link/20241003-ad2s1210-select-v1-8-4019453f8c33@gmail.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: ltc1660: add missing select REGMAP_SPI in Kconfig

2024-10-22T13:56:46Z

commit 252ff06a4cb4e572cb3c7fcfa697db96b08a7781 upstream. This driver makes use of regmap_spi, but does not select the required module. Add the missing 'select REGMAP_SPI'. Fixes: 8316cebd1e59 ("iio: dac: add support for ltc1660") Signed-off-by: Javier Carrasco Link: https://patch.msgid.link/20241003-ad2s1210-select-v1-7-4019453f8c33@gmail.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: ad5770r: add missing select REGMAP_SPI in Kconfig

2024-10-22T13:56:46Z

commit bcdab6f74c91cda19714354fd4e9e3ef3c9a78b3 upstream. This driver makes use of regmap_spi, but does not select the required module. Add the missing 'select REGMAP_SPI'. Fixes: cbbb819837f6 ("iio: dac: ad5770r: Add AD5770R support") Signed-off-by: Javier Carrasco Link: https://patch.msgid.link/20241003-ad2s1210-select-v1-6-4019453f8c33@gmail.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: dac: ad5592r: fix temperature channel scaling value

2024-06-21T12:35:53Z

commit 279428df888319bf68f2686934897301a250bb84 upstream. The scale value for the temperature channel is (assuming Vref=2.5 and the datasheet): 376.7897513 When calculating both val and val2 for the temperature scale we use (3767897513/25) and multiply it by Vref (here I assume 2500mV) to obtain: 2500 * (3767897513/25) ==> 376789751300 Finally we divide with remainder by 10^9 to get: val = 376 val2 = 789751300 However, we return IIO_VAL_INT_PLUS_MICRO (should have been NANO) as the scale type. So when converting the raw temperature value to the 'processed' temperature value we will get (assuming raw=810, offset=-753): processed = (raw + offset) * scale_val = (810 + -753) * 376 = 21432 processed += div((raw + offset) * scale_val2, 10^6) += div((810 + -753) * 789751300, 10^6) += 45015 ==> 66447 ==> 66.4 Celcius instead of the expected 21.5 Celsius. Fix this issue by changing IIO_VAL_INT_PLUS_MICRO to IIO_VAL_INT_PLUS_NANO. Fixes: 56ca9db862bf ("iio: dac: Add support for the AD5592R/AD5593R ADCs/DACs") Signed-off-by: Marc Ferland Link: https://lore.kernel.org/r/20240501150554.1871390-1-marc.ferland@sonatest.com Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman