Re: [PATCH v3 05/19] ASoc: sun4i-i2s: Add 20 and 24 bit support

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Hi Samuel,

On Sun, 20 Sep 2020 at 20:45, Samuel Holland <samuel@xxxxxxxxxxxx> wrote:
>
> On 9/20/20 1:07 PM, Clément Péron wrote:
> > From: Marcus Cooper <codekipper@xxxxxxxxx>
> >
> > Extend the functionality of the driver to include support of 20 and
> > 24 bits per sample.
> >
> > Signed-off-by: Marcus Cooper <codekipper@xxxxxxxxx>
> > Signed-off-by: Clément Péron <peron.clem@xxxxxxxxx>
> > Acked-by: Maxime Ripard <mripard@xxxxxxxxxx>
> > ---
> >  sound/soc/sunxi/sun4i-i2s.c | 11 +++++++++--
> >  1 file changed, 9 insertions(+), 2 deletions(-)
> >
> As I have mentioned before, if you want to support a 32-bit slot width on sun4i
> variants (which patch 2 does via TDM and this patch does via PCM format), you
> need to fix sun4i_i2s_get_wss() to return "3", not "4", for a 32-bit input.

Sorry I didn't get it the first time.

Is using a switch case is a correct solution?

static s8 sun4i_i2s_get_wss(const struct sun4i_i2s *i2s, int width)
{
switch (width)
{
case 16:
return 0x0;
case 20:
return 0x1;
case 24:
return 0x2;
case 32:
return 0x3;
}

return -EINVAL;
}

Clement

>
> Cheers,
> Samuel




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