[alsa-devel] [PATCH v4 12/17] ASoC: fsl-ssi: set bitclock in master mode from hw_params

Mark Brown broonie at kernel.org
Wed May 21 00:08:02 CEST 2014

On Mon, Apr 28, 2014 at 12:54:53PM +0200, Markus Pargmann wrote:
> From: Sascha Hauer <s.hauer at pengutronix.de>
> The fsl_ssi driver uses the .set_sysclk callback to configure the
> bitclock for master mode. This is unnecessary since the bitclock
> is known in hw_params. This patch removes the .set_sysclk callback
> and configures the bitclock from .hw_params.
> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
> ---

This isn't signed off either.  Are we positive that none of the users
set the bitclock to something non-default - there are devices out there
which require an unusual bitclock (eg, where it's also used as the
master clock and so needs overclocking)?

Providing a default as this does is a definite win, but allowing it to
be overridden may be needed sometimes (rarely fortunately).  Leaving a
stub set_sysclk() that just sets a variable and then using that value
instead of calculating in hw_params() would get the best of both worlds.
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