On 11/4/20 3:20 AM, shumingf@xxxxxxxxxxx wrote:
From: Shuming Fan <shumingf@xxxxxxxxxxx>
Add TDM slot callback function to support TDM configuration
Signed-off-by: Shuming Fan <shumingf@xxxxxxxxxxx>
Thanks Shuming for bearing with my questions.
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
---
sound/soc/codecs/rt1015.c | 101 ++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/rt1015.h | 42 ++++++++++++++++
2 files changed, 143 insertions(+)
diff --git a/sound/soc/codecs/rt1015.c b/sound/soc/codecs/rt1015.c
index 25fe2ddedd54..a9cd6ad0bf5a 100644
--- a/sound/soc/codecs/rt1015.c
+++ b/sound/soc/codecs/rt1015.c
@@ -944,6 +944,106 @@ static int rt1015_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio)
return 0;
}
+static int rt1015_set_tdm_slot(struct snd_soc_dai *dai,
+ unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
+{
+ struct snd_soc_component *component = dai->component;
+ unsigned int val = 0, rx_slotnum, tx_slotnum;
+ int ret = 0, first_bit;
+
+ switch (slots) {
+ case 2:
+ val |= RT1015_I2S_TX_2CH;
+ break;
+ case 4:
+ val |= RT1015_I2S_TX_4CH;
+ break;
+ case 6:
+ val |= RT1015_I2S_TX_6CH;
+ break;
+ case 8:
+ val |= RT1015_I2S_TX_8CH;
+ break;
+ default:
+ ret = -EINVAL;
+ goto _set_tdm_err_;
+ }
+
+ switch (slot_width) {
+ case 16:
+ val |= RT1015_I2S_CH_TX_LEN_16B;
+ break;
+ case 20:
+ val |= RT1015_I2S_CH_TX_LEN_20B;
+ break;
+ case 24:
+ val |= RT1015_I2S_CH_TX_LEN_24B;
+ break;
+ case 32:
+ val |= RT1015_I2S_CH_TX_LEN_32B;
+ break;
+ default:
+ ret = -EINVAL;
+ goto _set_tdm_err_;
+ }
+
+ /* Rx slot configuration */
+ rx_slotnum = hweight_long(rx_mask);
+ if (rx_slotnum != 1) {
+ ret = -EINVAL;
+ dev_err(component->dev, "too many rx slots or zero slot\n");
+ goto _set_tdm_err_;
+ }
+
+ /* This is an assumption that the system sends stereo audio to the amplifier typically.
+ * And the stereo audio is placed in slot 0/2/4/6 as the starting slot.
+ * The users could select the channel from L/R/L+R by "Mono LR Select" control.
+ */
+ first_bit = __ffs(rx_mask);
+ switch (first_bit) {
+ case 0:
+ case 2:
+ case 4:
+ case 6:
+ snd_soc_component_update_bits(component,
+ RT1015_TDM1_4,
+ RT1015_TDM_I2S_TX_L_DAC1_1_MASK |
+ RT1015_TDM_I2S_TX_R_DAC1_1_MASK,
+ (first_bit << RT1015_TDM_I2S_TX_L_DAC1_1_SFT) |
+ ((first_bit+1) << RT1015_TDM_I2S_TX_R_DAC1_1_SFT));
+ break;
+ case 1:
+ case 3:
+ case 5:
+ case 7:
+ snd_soc_component_update_bits(component,
+ RT1015_TDM1_4,
+ RT1015_TDM_I2S_TX_L_DAC1_1_MASK |
+ RT1015_TDM_I2S_TX_R_DAC1_1_MASK,
+ ((first_bit-1) << RT1015_TDM_I2S_TX_L_DAC1_1_SFT) |
+ (first_bit << RT1015_TDM_I2S_TX_R_DAC1_1_SFT));
+ break;
+ default:
+ ret = -EINVAL;
+ goto _set_tdm_err_;
+ }
+
+ /* Tx slot configuration */
+ tx_slotnum = hweight_long(tx_mask);
+ if (tx_slotnum) {
+ ret = -EINVAL;
+ dev_err(component->dev, "doesn't need to support tx slots\n");
+ goto _set_tdm_err_;
+ }
+
+ snd_soc_component_update_bits(component, RT1015_TDM1_1,
+ RT1015_I2S_CH_TX_MASK | RT1015_I2S_CH_RX_MASK |
+ RT1015_I2S_CH_TX_LEN_MASK | RT1015_I2S_CH_RX_LEN_MASK, val);
+
+_set_tdm_err_:
+ return ret;
+}
+
static int rt1015_probe(struct snd_soc_component *component)
{
struct rt1015_priv *rt1015 =
@@ -975,6 +1075,7 @@ static struct snd_soc_dai_ops rt1015_aif_dai_ops = {
.hw_params = rt1015_hw_params,
.set_fmt = rt1015_set_dai_fmt,
.set_bclk_ratio = rt1015_set_bclk_ratio,
+ .set_tdm_slot = rt1015_set_tdm_slot,
};
static struct snd_soc_dai_driver rt1015_dai[] = {
diff --git a/sound/soc/codecs/rt1015.h b/sound/soc/codecs/rt1015.h
index d3fdd30aca6d..ad8274c80990 100644
--- a/sound/soc/codecs/rt1015.h
+++ b/sound/soc/codecs/rt1015.h
@@ -213,6 +213,12 @@
#define RT1015_ID_VERA 0x0
#define RT1015_ID_VERB 0x1
+/* 0x00f2 */
+#define RT1015_MONO_LR_SEL_MASK (0x3 << 4)
+#define RT1015_MONO_L_CHANNEL (0x0 << 4)
+#define RT1015_MONO_R_CHANNEL (0x1 << 4)
+#define RT1015_MONO_LR_MIX_CHANNEL (0x2 << 4)
+
/* 0x0102 */
#define RT1015_DAC_VOL_MASK (0x7f << 9)
#define RT1015_DAC_VOL_SFT 9
@@ -275,6 +281,42 @@
#define RT1015_TDM_INV_BCLK_MASK (0x1 << 15)
#define RT1015_TDM_INV_BCLK_SFT 15
#define RT1015_TDM_INV_BCLK (0x1 << 15)
+#define RT1015_I2S_CH_TX_MASK (0x3 << 10)
+#define RT1015_I2S_CH_TX_SFT 10
+#define RT1015_I2S_TX_2CH (0x0 << 10)
+#define RT1015_I2S_TX_4CH (0x1 << 10)
+#define RT1015_I2S_TX_6CH (0x2 << 10)
+#define RT1015_I2S_TX_8CH (0x3 << 10)
+#define RT1015_I2S_CH_RX_MASK (0x3 << 8)
+#define RT1015_I2S_CH_RX_SFT 8
+#define RT1015_I2S_RX_2CH (0x0 << 8)
+#define RT1015_I2S_RX_4CH (0x1 << 8)
+#define RT1015_I2S_RX_6CH (0x2 << 8)
+#define RT1015_I2S_RX_8CH (0x3 << 8)
+#define RT1015_I2S_LR_CH_SEL_MASK (0x1 << 7)
+#define RT1015_I2S_LR_CH_SEL_SFT 7
+#define RT1015_I2S_LEFT_CH_SEL (0x0 << 7)
+#define RT1015_I2S_RIGHT_CH_SEL (0x1 << 7)
+#define RT1015_I2S_CH_TX_LEN_MASK (0x7 << 4)
+#define RT1015_I2S_CH_TX_LEN_SFT 4
+#define RT1015_I2S_CH_TX_LEN_16B (0x0 << 4)
+#define RT1015_I2S_CH_TX_LEN_20B (0x1 << 4)
+#define RT1015_I2S_CH_TX_LEN_24B (0x2 << 4)
+#define RT1015_I2S_CH_TX_LEN_32B (0x3 << 4)
+#define RT1015_I2S_CH_TX_LEN_8B (0x4 << 4)
+#define RT1015_I2S_CH_RX_LEN_MASK (0x7 << 0)
+#define RT1015_I2S_CH_RX_LEN_SFT 0
+#define RT1015_I2S_CH_RX_LEN_16B (0x0 << 0)
+#define RT1015_I2S_CH_RX_LEN_20B (0x1 << 0)
+#define RT1015_I2S_CH_RX_LEN_24B (0x2 << 0)
+#define RT1015_I2S_CH_RX_LEN_32B (0x3 << 0)
+#define RT1015_I2S_CH_RX_LEN_8B (0x4 << 0)
+
+/* TDM1 Setting-4 (0x011a) */
+#define RT1015_TDM_I2S_TX_L_DAC1_1_MASK (0x7 << 12)
+#define RT1015_TDM_I2S_TX_R_DAC1_1_MASK (0x7 << 8)
+#define RT1015_TDM_I2S_TX_L_DAC1_1_SFT 12
+#define RT1015_TDM_I2S_TX_R_DAC1_1_SFT 8
/* 0x0330 */
#define RT1015_ABST_AUTO_EN_MASK (0x1 << 13)
