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authorMarcus Cooper <codekipper@gmail.com>2017-08-19 14:48:37 +0200
committerMark Brown <broonie@kernel.org>2017-08-21 17:16:05 +0100
commitd03d2737e2d20c6ffb242154a69e1a9313adb632 (patch)
treeaae6d2c24e82113c0788c9bb12464045fe82fb9b /sound/soc/sunxi
parentdfd2293c8626f1282e6a6e30f591c0a83146f3d4 (diff)
ASoC: sun4i-i2s: Check for slave select bit
The newer SoCs do not have this setting. Instead they set the pin direction. Add a check to see if the bit is valid and if so set it accordingly. Signed-off-by: Marcus Cooper <codekipper@gmail.com> Reviewed-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sunxi')
-rw-r--r--sound/soc/sunxi/sun4i-i2s.c37
1 files changed, 21 insertions, 16 deletions
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index d9910f6617ad..573acca24a2c 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -96,6 +96,7 @@
* struct sun4i_i2s_quirks - Differences between SoC variants.
*
* @has_reset: SoC needs reset deasserted.
+ * @has_slave_select_bit: SoC has a bit to enable slave mode.
* @reg_offset_txdata: offset of the tx fifo.
* @sun4i_i2s_regmap: regmap config to use.
* @mclk_offset: Value by which mclkdiv needs to be adjusted.
@@ -114,6 +115,7 @@
*/
struct sun4i_i2s_quirks {
bool has_reset;
+ bool has_slave_select_bit;
unsigned int reg_offset_txdata; /* TX FIFO */
const struct regmap_config *sun4i_i2s_regmap;
unsigned int mclk_offset;
@@ -394,24 +396,25 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
regmap_field_write(i2s->field_fmt_bclk, bclk_polarity);
regmap_field_write(i2s->field_fmt_lrclk, lrclk_polarity);
- /* DAI clock master masks */
- switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
- case SND_SOC_DAIFMT_CBS_CFS:
- /* BCLK and LRCLK master */
- val = SUN4I_I2S_CTRL_MODE_MASTER;
- break;
- case SND_SOC_DAIFMT_CBM_CFM:
- /* BCLK and LRCLK slave */
- val = SUN4I_I2S_CTRL_MODE_SLAVE;
- break;
- default:
- return -EINVAL;
+ if (i2s->variant->has_slave_select_bit) {
+ /* DAI clock master masks */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBS_CFS:
+ /* BCLK and LRCLK master */
+ val = SUN4I_I2S_CTRL_MODE_MASTER;
+ break;
+ case SND_SOC_DAIFMT_CBM_CFM:
+ /* BCLK and LRCLK slave */
+ val = SUN4I_I2S_CTRL_MODE_SLAVE;
+ break;
+ default:
+ return -EINVAL;
+ }
+ regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
+ SUN4I_I2S_CTRL_MODE_MASK,
+ val);
}
- regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
- SUN4I_I2S_CTRL_MODE_MASK,
- val);
-
/* Set significant bits in our FIFOs */
regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG,
SUN4I_I2S_FIFO_CTRL_TX_MODE_MASK |
@@ -723,6 +726,7 @@ static const struct sun4i_i2s_quirks sun4i_a10_i2s_quirks = {
.field_fmt_sr = REG_FIELD(SUN4I_I2S_FMT0_REG, 4, 5),
.field_fmt_bclk = REG_FIELD(SUN4I_I2S_FMT0_REG, 6, 6),
.field_fmt_lrclk = REG_FIELD(SUN4I_I2S_FMT0_REG, 7, 7),
+ .has_slave_select_bit = true,
.field_fmt_mode = REG_FIELD(SUN4I_I2S_FMT0_REG, 0, 1),
.field_txchanmap = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
.field_rxchanmap = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),
@@ -739,6 +743,7 @@ static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
.field_fmt_sr = REG_FIELD(SUN4I_I2S_FMT0_REG, 4, 5),
.field_fmt_bclk = REG_FIELD(SUN4I_I2S_FMT0_REG, 6, 6),
.field_fmt_lrclk = REG_FIELD(SUN4I_I2S_FMT0_REG, 7, 7),
+ .has_slave_select_bit = true,
.field_fmt_mode = REG_FIELD(SUN4I_I2S_FMT0_REG, 0, 1),
.field_txchanmap = REG_FIELD(SUN4I_I2S_TX_CHAN_MAP_REG, 0, 31),
.field_rxchanmap = REG_FIELD(SUN4I_I2S_RX_CHAN_MAP_REG, 0, 31),