[PATCH v2 0/7] iio: convert GPIO chips to using new value setters

[Bartosz Golaszewski <brgl@bgdev.pl>]

struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. We're in the process of
converting all GPIO drivers to using the new API. This series converts
all the IIO GPIO controllers and also contains some additional
refactoring patches for ad5592r in preparation for the conversion.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
Changes in v2:
- move devm_mutex_init() earlier in probe() to avoid using a goto
- rework returning on error in ad5592r_set_channel_modes(): return
  immediately instead of saving the return value and going to the bottom
  of the function
- use scoped_guard() in one more place to fix a build warning reported
  by the build bot
- Link to v1: https://lore.kernel.org/r/20250407-gpiochip-set-rv-iio-v1-0-8431b003a145@linaro.org

---
Bartosz Golaszewski (7):
      iio: dac: ad5592r: destroy mutexes in detach paths
      iio: dac: ad5592r: use lock guards
      iio: dac: ad5592r: use new GPIO line value setter callbacks
      iio: adc: ti-ads7950: use new GPIO line value setter callbacks
      iio: adc: ad4130: use new GPIO line value setter callbacks
      iio: addac: ad74413r: use new GPIO line value setter callbacks
      iio: addac: ad74115: use new GPIO line value setter callbacks

 drivers/iio/adc/ad4130.c       |  10 +--
 drivers/iio/adc/ti-ads7950.c   |  17 +++--
 drivers/iio/addac/ad74115.c    |  18 +++--
 drivers/iio/addac/ad74413r.c   |  28 ++++----
 drivers/iio/dac/ad5592r-base.c | 147 ++++++++++++++++++-----------------------
 5 files changed, 103 insertions(+), 117 deletions(-)
---
base-commit: 0af2f6be1b4281385b618cb86ad946eded089ac8
change-id: 20250401-gpiochip-set-rv-iio-b064ce43791d

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>