[alsa-devel] [PATCH v2 3/3] ASoC: TDA7802: Add turn-on diagnostic routine

[Charles Keepax]

On Tue, Jul 30, 2019 at 03:04:19PM +0100, Thomas Preston wrote:
> On 30/07/2019 13:41, Charles Keepax wrote:
> >> +static int tda7802_bulk_update(struct regmap *map, struct reg_update *update,
> >> +		size_t update_count)
> >> +{
> >> +	int i, err;
> >> +
> >> +	for (i = 0; i < update_count; i++) {
> >> +		err = regmap_update_bits(map, update[i].reg, update[i].mask,
> >> +				update[i].val);
> >> +		if (err < 0)
> >> +			return err;
> >> +	}
> >> +
> >> +	return i;
> >> +}
> > 
> > This could probably be removed using regmap_multi_reg_write.
> > 
> 
> The problem is that I want to retain the state of the other bits in those
> registers. Maybe I should make a copy of the backed up state, set the bits
> I want to off-device, then either:
> 
> 1. Write the changes with regmap_multi_reg_write
> 2. Write all six regs again (if my device doesn't support the multi_reg)
> 

Nah sorry my bad you are probably better off they way you are.

Thanks,
Charles