[RESEND][PATCH 0/1][SRU][F] Dynamically set AD5593R channel modes

[AceLan Kao]

From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>

BugLink: https://bugs.launchpad.net/bugs/1895612

[Impact]
On Advantech UNO-420 development platform, we need a generic way to set
the pin mode.
Upstream would like us to leverage ACPI override method to change the
modes, but in Ubuntu core, we can't generate a new initramfs and boot up
with the generated initramfs.

[Fix]
Add a module parameter to assign pin modes while loading ad5593r driver.

[Test]
Verified on Advantech UNO-420 platform.

[Where problems could occur]
It checks the length of the passed parameter, and checks every bytes
in it to make sure it's a valid argument. There should be no index out
of range issue, and no wrong pin mode would be set.

William Sung (1):
  UBUNTU: SAUCE: iio: dac: ad5593r: Dynamically set AD5593R channel
    modes

 drivers/iio/dac/ad5592r-base.c | 21 +++++++++++++---
 drivers/iio/dac/ad5592r-base.h |  4 ++++
 drivers/iio/dac/ad5593r.c      | 44 ++++++++++++++++++++++++++++++++++
 3 files changed, 66 insertions(+), 3 deletions(-)

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2.25.1