Re: [PATCH 10/10] iio: dac: add mcf54415 DAC

Greg Ungerer <[email protected]>
Newsgroups org.kernel.vger.linux-m68k,org.infradead.lists.linux-arm-kernel,org.kernel.vger.linux-iio,org.kernel.vger.linux-kernel
Message-ID <[email protected]>
On 5/5/26 03:27, Arnd Bergmann wrote:
> On Mon, May 4, 2026, at 19:16, Angelo Dureghello wrote:
> 
>> +static void mcf54415_dac_exit(void *data)
>> +{
>> +	struct mcf54415_dac *info = data;
>> +	int val;
>> +
>> +	val = readw(info->regs + MCF54415_DAC_CR);
>> +	val |= MCF54415_DAC_CR_PDN;
>> +	writew(val, info->regs + MCF54415_DAC_CR);
>> +}
> 
> We've recently discussed changing the MMIO accessors on coldfire
> to behave like all the other ones, which makes readw() and writew()
> have an implicit byteswap. An additional driver means one more
> place to change during the conversion. Maybe you can use the
> new mcf_readw()/mcf_writew() helpers that Greg has started
> introducing? Those will keep using native big-endian register
> definitions.

Yes, please :-)
Those newly introduced mcf_readX/mcf_writeX are in the for-next branch
of the m68knommu git tree now, they have not hit mainline yet, hopefully
in the next merge cycle.

Somewhat related, I will have patches out for the other affected drivers
over the next few days.

Regards
Greg
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.