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[v5,23/23] drm/i2c: tda998x: adjust the audio clock divider for S/PDIF

Message ID 46333b5b18b676ca298a817e70d982a7b13e2965.1390986083.git.moinejf@free.fr (mailing list archive)
State New, archived
Headers show

Commit Message

Jean-Francois Moine Jan. 25, 2014, 5:14 p.m. UTC
According to some tests on the Cubox (Marvell Armada 510 + TDA19988),
the S/PDIF input asks for a greater audio clock divider.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
---
 drivers/gpu/drm/i2c/tda998x_drv.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/drivers/gpu/drm/i2c/tda998x_drv.c b/drivers/gpu/drm/i2c/tda998x_drv.c
index 4f1a047..2f97290 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);
 
 	/*