On Thu, Feb 22, 2018 at 04:07:39PM +0000, Alexey Brodkin wrote: > Hi Tom, > > On Thu, 2018-02-22 at 10:43 -0500, Tom Rini wrote: > > On Wed, Feb 21, 2018 at 03:26:05PM +0300, Alexey Brodkin wrote: > > [snip] > > > > static inline void serial_out_shift(void *addr, int shift, int value) > > > { > > > -#ifdef CONFIG_SYS_NS16550_PORT_MAPPED > > > +#ifdef CONFIG_ARCH_DFSS > > > + write_aux_reg((int)addr, value); > > > +#elif defined(CONFIG_SYS_NS16550_PORT_MAPPED) > > > outb(value, (ulong)addr); > > > #elif defined(CONFIG_SYS_NS16550_MEM32) && > > > !defined(CONFIG_SYS_BIG_ENDIAN) > > > out_le32(addr, value); > > > @@ -70,7 +75,9 @@ static inline void serial_out_shift(void *addr, int > > > shift, int value) > > > > > > static inline int serial_in_shift(void *addr, int shift) > > > { > > > -#ifdef CONFIG_SYS_NS16550_PORT_MAPPED > > > +#ifdef CONFIG_ARCH_DFSS > > > + return read_aux_reg((int)addr); > > > +#elif defined(CONFIG_SYS_NS16550_PORT_MAPPED) > > > return inb((ulong)addr); > > > #elif defined(CONFIG_SYS_NS16550_MEM32) && > > > !defined(CONFIG_SYS_BIG_ENDIAN) > > > return in_le32(addr); > > > > As always, thanks for the detailed explanation. Yes, I think that of > > the options, putting the details in read/write_aux_reg (and please make > > sure read/write_aux_reg have a good function comment too) is the best > > choice. Thanks! > > Frankly I didn't understand your comment well enough :) > Do you suggest to keep proposed implementation (i.e. modification of > serial_{in|out}_shift()) but add comments on what do we do and why or > you really meant something completely different?
I'm fine with what you have above, in the driver. I missed that read_aux_reg already exists, sorry. So I guess a detailed commit message will have to be enough documentation for future reviewers of the code. Or, we'll see what comes out of Simon's comments. -- Tom
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