[linux-yocto] [PATCH] gpio-pca953x: add PCAL9535 interrupt support

[Puustinen, Ismo]

Hi!

On Wed, 2016-03-30 at 16:37 +0800, Yong Li wrote:
> Galileo gen 2 board uses the PCAL9535 as the GPIO expansion,
> it is different from PCA9535 and includes interrupt mask/status
> registers,
> The current driver does not support the interrupt registers
> configuration,
> it causes some gpio pins cannot trigger interrupt events,
> this patch fix this issue. The original patch was submitted by
> Josef Ahmad <josef.ahmad at linux.intel.com>
> http://git.yoctoproject.org/cgit/cgit.cgi/meta-intel-quark/tree/recip
> es-kernel/linux/files/0015-Quark-GPIO-1-2-quark.patch
> 
> Upstream-Status: submission pending
> 
> Signed-off-by: Yong Li <sdliyong at gmail.com>
> 

I tried out this patch briefly and it appears to work. At least I could
get proper interrupt events on ADC pins on Galileo 2.

However, we should IMHO move this patch below the custom "drive"
property patch in the kernel git tree (and modify the drive property
patch accordingly). This patch could then be submitted to real kernel
upstream because it wouldn't depend on patches that can't upstreamed.

Ismo