[PATCH v3 2/4] pwm: rockchip: Allow polarity invert on rk3288

On August 20, 2014 1:54:11 PM CDT, Doug Anderson [off-list ref] wrote:

On Wed, Aug 20, 2014 at 3:04 AM, Thierry Reding
[off-list ref] wrote:

quoted

On Tue, Aug 19, 2014 at 09:07:54AM -0700, Doug Anderson wrote:

quoted

The rk3288 has the ability to invert 
+     struct rockchip_pwm_chip *pc = to_rockchip_pwm_chip(chip);
+
+     if (!pc->data->has_invert)
+             return -ENOSYS;
+

At the kernel summit hpa also mentioned that ENOSYS should only be used for missing syscalls. Not sure what error code would suit better here though...


Thanks.

-- 
Dmitry