From: Jean-Francois Moine Date: Sat, 25 Jan 2014 17:14:36 +0000 (+0100) Subject: drm/i2c: tda998x: adjust the audio clock divider for S/PDIF X-Git-Tag: firefly_0821_release~176^2~4105^2~61^2~1 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=2470feccbf030652380c2d73304576137b0fb12e;p=firefly-linux-kernel-4.4.55.git 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 Acked-by: Russell King Signed-off-by: Jean-Francois Moine Signed-off-by: Russell King --- diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c index 666ee24329b9..d0f3a4cbb866 100644 --- a/drivers/gpu/drm/i2c/tda998x_drv.c +++ b/drivers/gpu/drm/i2c/tda998x_drv.c @@ -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); /*