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List: alsa-devel
Subject: [alsa-devel] [PATCH 5/7] ASoC: amd: add ACP3x TDM mode support
From: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati () amd ! com>
Date: 2019-09-30 14:10:21
Message-ID: 1569891524-18875-5-git-send-email-Vishnuvardhanrao.Ravulapati () amd ! com
[Download RAW message or body]
ACP3x I2S (CPU DAI) can act in normal I2S and TDM modes. Added support
for TDM mode. Desired mode can be selected from ASoC machine driver.
Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@amd.com>
---
sound/soc/amd/raven/acp3x-i2s.c | 36 ++++++++++++++++++++++++++----------
1 file changed, 26 insertions(+), 10 deletions(-)
diff --git a/sound/soc/amd/raven/acp3x-i2s.c b/sound/soc/amd/raven/acp3x-i2s.c
index 4511b9b..312207b 100644
--- a/sound/soc/amd/raven/acp3x-i2s.c
+++ b/sound/soc/amd/raven/acp3x-i2s.c
@@ -43,7 +43,8 @@ static int acp3x_i2s_set_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask,
u32 rx_mask, int slots, int slot_width)
{
u32 val = 0;
- u16 slot_len;
+ u32 mode = 0;
+ u16 slot_len, flen;
struct i2s_dev_data *adata = snd_soc_dai_get_drvdata(cpu_dai);
@@ -64,16 +65,31 @@ static int acp3x_i2s_set_tdm_slot(struct snd_soc_dai *cpu_dai, u32 tx_mask,
return -EINVAL;
}
- val = rv_readl(adata->acp3x_base + mmACP_BTTDM_ITER);
- rv_writel((val | 0x2), adata->acp3x_base + mmACP_BTTDM_ITER);
- val = rv_readl(adata->acp3x_base + mmACP_BTTDM_IRER);
- rv_writel((val | 0x2), adata->acp3x_base + mmACP_BTTDM_IRER);
-
- val = (FRM_LEN | (slots << 15) | (slot_len << 18));
- rv_writel(val, adata->acp3x_base + mmACP_BTTDM_TXFRMT);
- rv_writel(val, adata->acp3x_base + mmACP_BTTDM_RXFRMT);
+ /* Enable I2S / BT channels TDM and respective
+ * I2S/BT`s TX/RX Formats frame lengths.
+ */
+ flen = (FRM_LEN | (slots << 15) | (slot_len << 18));
+
+ mode = rv_readl(adata->acp3x_base + mmACP_BTTDM_IER);
+ if (mode) {
+ val = rv_readl(adata->acp3x_base + mmACP_BTTDM_ITER);
+ rv_writel((val | 0x2), adata->acp3x_base + mmACP_BTTDM_ITER);
+ rv_writel(flen, adata->acp3x_base + mmACP_BTTDM_TXFRMT);
+ val = rv_readl(adata->acp3x_base + mmACP_BTTDM_IRER);
+ rv_writel((val | 0x2), adata->acp3x_base + mmACP_BTTDM_IRER);
+ rv_writel(flen, adata->acp3x_base + mmACP_BTTDM_RXFRMT);
+ }
- adata->tdm_fmt = val;
+ mode = rv_readl(adata->acp3x_base + mmACP_I2STDM_IER);
+ if (mode) {
+ val = rv_readl(adata->acp3x_base + mmACP_I2STDM_ITER);
+ rv_writel((val | 0x2), adata->acp3x_base + mmACP_I2STDM_ITER);
+ rv_writel(flen, adata->acp3x_base + mmACP_I2STDM_TXFRMT);
+ val = rv_readl(adata->acp3x_base + mmACP_I2STDM_IRER);
+ rv_writel((val | 0x2), adata->acp3x_base + mmACP_I2STDM_IRER);
+ rv_writel(flen, adata->acp3x_base + mmACP_I2STDM_RXFRMT);
+ }
+ adata->tdm_fmt = flen;
return 0;
}
--
2.7.4
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