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drm/i2c: tda998x: adjust the audio clock divider for S/PDIF 

According to some tests on the Cubox (Marvell Armada 510 + TDA19988),
the S/PDIF input asks for a greater audio clock divider.

Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Jean-Francois Moine 2014-01-25 18:14:36 +01:00 committed by Russell King
parent a8b517e531
commit 2470feccbf
1 changed files with 7 additions and 3 deletions
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10
drivers/gpu/drm/i2c/tda998x_drv.c
View File

@ -680,10 +680,14 @@ tda998x_configure_audio(struct tda998x_priv *priv,
* There is no detailed info in the datasheet, so we just
* assume 100MHz requires larger divider.
*/
adiv = AUDIO_DIV_SERCLK_8;
if (mode->clock > 100000)
adiv = AUDIO_DIV_SERCLK_16;
else
adiv = AUDIO_DIV_SERCLK_8;
adiv++; /* AUDIO_DIV_SERCLK_16 */
/* S/PDIF asks for a larger divider */
if (p->audio_format == AFMT_SPDIF)
adiv++; /* AUDIO_DIV_SERCLK_16 or _32 */
reg_write(priv, REG_AUDIO_DIV, adiv);
/*