On Wed, Mar 27, 2019 at 11:35:30AM +0200, Andy Shevchenko wrote:
> On Tue, Mar 26, 2019 at 06:48:07PM -0700, Ronald Tschalär wrote:
> > The keyboard and trackpad on recent MacBook's (since 8,1) and
> > MacBookPro's (13,* and 14,*) are attached to an SPI controller instead
> > of USB, as previously. The higher level protocol is not publicly
> > documented and hence has been reverse engineered. As a consequence there
> > are still a number of unknown fields and commands. However, the known
> > parts have been working well and received extensive testing and use.
[snip]
> > +#include <asm/barrier.h>
>
> > +#include <asm-generic/unaligned.h>
>
> generic?!
>
> #include <asm/unaligned.h>
> should work.
Yes, you're right. I brought myself up-to-speed now on the difference
between the two.
> > +static const char *applespi_debug_facility(unsigned int log_mask)
> > +{
> > + switch (log_mask) {
> > + case DBG_CMD_TP_INI:
> > + return "Touchpad Initialization";
> > + case DBG_CMD_BL:
> > + return "Backlight Command";
> > + case DBG_CMD_CL:
> > + return "Caps-Lock Command";
> > + case DBG_RD_KEYB:
> > + return "Keyboard Event";
> > + case DBG_RD_TPAD:
> > + return "Touchpad Event";
> > + case DBG_RD_UNKN:
> > + return "Unknown Event";
> > + case DBG_RD_IRQ:
> > + return "Interrupt Request";
> > + case DBG_RD_CRC:
> > + return "Corrupted packet";
> > + case DBG_TP_DIM:
> > + return "Touchpad Dimensions";
> > + default:
>
> > + return "-Unrecognized log mask-";
>
> I don't think '-' surroundings are needed, but this is rather minor. Up to
> you.
I've used that to distinguish an error value from normal values; but
that's not an idiom used in the kernel AFAICT, so I'll remove them.
Thanks.
Cheers,
Ronald
