On 25 January 2018 at 09:41, Maxime Ripard maxime.ripard@free-electrons.com wrote:
Hi,
On Wed, Jan 24, 2018 at 03:11:01PM +0100, codekipper@gmail.com wrote:
From: Marcus Cooper codekipper@gmail.com
On the newer SoCs this is set by default to transfer a 0 after each sample in each slot. Add the regmap field to configure this and set it so that it pads the sample with 0s.
Signed-off-by: Marcus Cooper codekipper@gmail.com
sound/soc/sunxi/sun4i-i2s.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index 626679057d0f..9fda1240b717 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -139,6 +139,7 @@
- @field_fmt_bclk: regmap field to set clk polarity.
- @field_fmt_lrclk: regmap field to set frame polarity.
- @field_fmt_mode: regmap field to set the operational mode.
- @field_fmt_sext: regmap field to set the sign extension.
- @field_txchanmap: location of the tx channel mapping register.
- @field_rxchanmap: location of the rx channel mapping register.
- @field_txchansel: location of the tx channel select bit fields.
@@ -164,6 +165,7 @@ struct sun4i_i2s_quirks { struct reg_field field_fmt_bclk; struct reg_field field_fmt_lrclk; struct reg_field field_fmt_mode;
struct reg_field field_fmt_sext; struct reg_field field_txchanmap; struct reg_field field_rxchanmap; struct reg_field field_txchansel;@@ -188,6 +190,7 @@ struct sun4i_i2s { struct regmap_field *field_fmt_bclk; struct regmap_field *field_fmt_lrclk; struct regmap_field *field_fmt_mode;
struct regmap_field *field_fmt_sext; struct regmap_field *field_txchanmap; struct regmap_field *field_rxchanmap; struct regmap_field *field_txchansel;@@ -358,6 +361,9 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, SUN8I_I2S_FMT0_LRCK_PERIOD_MASK, SUN8I_I2S_FMT0_LRCK_PERIOD(word_size));
/* Set sign extension to pad out LSB with 0 */regmap_field_write(i2s->field_fmt_sext, 0);Your commit log seems to suggest that it's only relevant for the newer SoCs (which ones?), yet you enable it for all the supported ones. Either the code or the commit log should be adjusted to be consistent with the other.
ACK Thanks, CK
Maxime
-- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com