Hi Alexander,
On 11/14/2013 10:42 PM, Alexander Shiyan wrote:
SYSCON driver was designed for using memory areas (registers)
that are used in several subsystems. There are systems (CPUs)
which use bits in one register for various purposes and thus
should be handled by various kernel subsystems. This driver
allows you to use the individual SYSCON bits as GPIOs.
This is RFC only yet, so I did not add DT bindings for this
driver.
Signed-off-by: Alexander Shiyan <[email protected]>
---
drivers/gpio/Kconfig | 6 ++
drivers/gpio/Makefile | 1 +
drivers/gpio/gpio-syscon.c | 141 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 148 insertions(+)
create mode 100644 drivers/gpio/gpio-syscon.c
[snip]
+ if (of_property_read_u32(np, "gpio-syscon,offset", &priv->bit_offset))
+ return -EINVAL;
Any reason for dropping the error code from of_property_read_u32() in
favor of fixed -EINVAL?
Br, David Cohen
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