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Message-ID: <e68d8fbaaed7000b13688b0f1757b5b9557889d7.1407320232.git.shengjiu.wang@freescale.com>
Date: Wed, 6 Aug 2014 18:23:03 +0800
From: Shengjiu Wang <shengjiu.wang@...escale.com>
To: <broonie@...nel.org>, <lgirdwood@...il.com>, <timur@...i.org>,
<perex@...ex.cz>, <tiwai@...e.de>, <nicoleotsuka@...il.com>,
<Li.Xiubo@...escale.com>, <shc_work@...l.ru>,
<fabio.estevam@...escale.com>, <arnd@...db.de>
CC: <alsa-devel@...a-project.org>, <linuxppc-dev@...ts.ozlabs.org>,
<linux-kernel@...r.kernel.org>
Subject: [PATCH V1 1/2] ASoC: fsl: esai: refine esai for tdm support
Add parameter for slots, and caculate the number of TX/RX pins and bclk with
slots. Then driver will be compatible with slots > 2 in TDM mode.
Signed-off-by: Shengjiu Wang <shengjiu.wang@...escale.com>
---
sound/soc/fsl/fsl_esai.c | 10 +++++++---
sound/soc/fsl/fsl_esai.h | 8 ++++----
2 files changed, 11 insertions(+), 7 deletions(-)
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index 72d154e..89aa531 100644
--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -56,6 +56,7 @@ struct fsl_esai {
struct clk *fsysclk;
u32 fifo_depth;
u32 slot_width;
+ u32 slots;
u32 hck_rate[2];
u32 sck_rate[2];
bool hck_dir[2];
@@ -363,6 +364,7 @@ static int fsl_esai_set_dai_tdm_slot(struct snd_soc_dai *dai, u32 tx_mask,
ESAI_xSMB_xS_MASK, ESAI_xSMB_xS(rx_mask));
esai_priv->slot_width = slot_width;
+ esai_priv->slots = slots;
return 0;
}
@@ -510,10 +512,11 @@ static int fsl_esai_hw_params(struct snd_pcm_substream *substream,
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
u32 width = snd_pcm_format_width(params_format(params));
u32 channels = params_channels(params);
+ u32 pin = DIV_ROUND_UP(channels, esai_priv->slots);
u32 bclk, mask, val;
int ret;
- bclk = params_rate(params) * esai_priv->slot_width * 2;
+ bclk = params_rate(params) * esai_priv->slot_width * esai_priv->slots;
ret = fsl_esai_set_bclk(dai, tx, bclk);
if (ret)
@@ -530,7 +533,7 @@ static int fsl_esai_hw_params(struct snd_pcm_substream *substream,
mask = ESAI_xFCR_xFR_MASK | ESAI_xFCR_xWA_MASK | ESAI_xFCR_xFWM_MASK |
(tx ? ESAI_xFCR_TE_MASK | ESAI_xFCR_TIEN : ESAI_xFCR_RE_MASK);
val = ESAI_xFCR_xWA(width) | ESAI_xFCR_xFWM(esai_priv->fifo_depth) |
- (tx ? ESAI_xFCR_TE(channels) | ESAI_xFCR_TIEN : ESAI_xFCR_RE(channels));
+ (tx ? ESAI_xFCR_TE(pin) | ESAI_xFCR_TIEN : ESAI_xFCR_RE(pin));
regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx), mask, val);
@@ -565,6 +568,7 @@ static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
struct fsl_esai *esai_priv = snd_soc_dai_get_drvdata(dai);
bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
u8 i, channels = substream->runtime->channels;
+ u32 pin = DIV_ROUND_UP(channels, esai_priv->slots);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
@@ -579,7 +583,7 @@ static int fsl_esai_trigger(struct snd_pcm_substream *substream, int cmd,
regmap_update_bits(esai_priv->regmap, REG_ESAI_xCR(tx),
tx ? ESAI_xCR_TE_MASK : ESAI_xCR_RE_MASK,
- tx ? ESAI_xCR_TE(channels) : ESAI_xCR_RE(channels));
+ tx ? ESAI_xCR_TE(pin) : ESAI_xCR_RE(pin));
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
diff --git a/sound/soc/fsl/fsl_esai.h b/sound/soc/fsl/fsl_esai.h
index 75e1403..91a550f 100644
--- a/sound/soc/fsl/fsl_esai.h
+++ b/sound/soc/fsl/fsl_esai.h
@@ -130,8 +130,8 @@
#define ESAI_xFCR_RE_WIDTH 4
#define ESAI_xFCR_TE_MASK (((1 << ESAI_xFCR_TE_WIDTH) - 1) << ESAI_xFCR_xE_SHIFT)
#define ESAI_xFCR_RE_MASK (((1 << ESAI_xFCR_RE_WIDTH) - 1) << ESAI_xFCR_xE_SHIFT)
-#define ESAI_xFCR_TE(x) ((ESAI_xFCR_TE_MASK >> (ESAI_xFCR_TE_WIDTH - ((x + 1) >> 1))) & ESAI_xFCR_TE_MASK)
-#define ESAI_xFCR_RE(x) ((ESAI_xFCR_RE_MASK >> (ESAI_xFCR_RE_WIDTH - ((x + 1) >> 1))) & ESAI_xFCR_RE_MASK)
+#define ESAI_xFCR_TE(x) ((ESAI_xFCR_TE_MASK >> (ESAI_xFCR_TE_WIDTH - x)) & ESAI_xFCR_TE_MASK)
+#define ESAI_xFCR_RE(x) ((ESAI_xFCR_RE_MASK >> (ESAI_xFCR_RE_WIDTH - x)) & ESAI_xFCR_RE_MASK)
#define ESAI_xFCR_xFR_SHIFT 1
#define ESAI_xFCR_xFR_MASK (1 << ESAI_xFCR_xFR_SHIFT)
#define ESAI_xFCR_xFR (1 << ESAI_xFCR_xFR_SHIFT)
@@ -272,8 +272,8 @@
#define ESAI_xCR_RE_WIDTH 4
#define ESAI_xCR_TE_MASK (((1 << ESAI_xCR_TE_WIDTH) - 1) << ESAI_xCR_xE_SHIFT)
#define ESAI_xCR_RE_MASK (((1 << ESAI_xCR_RE_WIDTH) - 1) << ESAI_xCR_xE_SHIFT)
-#define ESAI_xCR_TE(x) ((ESAI_xCR_TE_MASK >> (ESAI_xCR_TE_WIDTH - ((x + 1) >> 1))) & ESAI_xCR_TE_MASK)
-#define ESAI_xCR_RE(x) ((ESAI_xCR_RE_MASK >> (ESAI_xCR_RE_WIDTH - ((x + 1) >> 1))) & ESAI_xCR_RE_MASK)
+#define ESAI_xCR_TE(x) ((ESAI_xCR_TE_MASK >> (ESAI_xCR_TE_WIDTH - x)) & ESAI_xCR_TE_MASK)
+#define ESAI_xCR_RE(x) ((ESAI_xCR_RE_MASK >> (ESAI_xCR_RE_WIDTH - x)) & ESAI_xCR_RE_MASK)
/*
* Transmit Clock Control Register -- REG_ESAI_TCCR 0xD8
--
1.7.9.5
--
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