Re: [PATCH 2/2] regmap: sdw: Remove 8-bit value size restriction

Mark Brown
2023-01-13T17:12:42Z

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On Fri, Jan 13, 2023 at 10:57:39AM -0600, Pierre-Louis Bossart wrote:

> The change from reg_write/read_reg to write/read seems ok, what I was
> asking about was the gather_write.

> + .write = regmap_sdw_write,
> + .gather_write = regmap_sdw_gather_write,
> + .read = regmap_sdw_read,

> what happens if you only have .write and .read? What does the
> .gather_write help with if you only use only address?

Like I said before it means that the core doesn't have to put the
register in a linear buffer with the values, meaning it can avoid
copying already formatted data around or allocating memory.

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