On Mon, Jul 24, 2017 at 11:08 PM, Sudeep Holla [off-list ref] wrote:

On 24/07/17 18:20, Jassi Brar wrote:

quoted

quoted

I see that the SCPI firmware driver (as the user of the mailbox API) is
expecting the return value from a0 as returned above, translating the
firmware error codes into Linux' ones.

I am afraid, SCPI driver is not the golden example for client drivers
to follow. It is supposed to work only with MHU, and then, it is
likely to break if some other protocol is running parallel to it.

Not sure why do you say it works only with ARM MHU ? AmLogic uses it
with their mailbox driver. However they followed an interim version of
the SCPI spec which is termed "legacy" in the driver.

Screw coding... Just tell me what stuff do you smoke? Must be really good!