[alsa-devel] [PATCH V2 0/2] refine esai for tdm support
These patchs is to refine esai for tdm support.
Changes for V2 - update the comments according the reviewer's suggestion - add init value for slots and change pin to pins.
Shengjiu Wang (2): ASoC: fsl_esai: refine esai for TDM support Revert "ASoC: fsl-esai: Add .xlate_tdm_slot_mask() support."
sound/soc/fsl/Kconfig | 1 - sound/soc/fsl/fsl_esai.c | 16 +++++++++++----- sound/soc/fsl/fsl_esai.h | 8 ++++---- 3 files changed, 15 insertions(+), 10 deletions(-)
Original driver didn't store the number of slots, just fix the slot number to 2, use this default number to calculate bclk and pins for TX/RX. In this patch, add one parameter for slots, and update the calculation of bclk and pins of TX/RX. Then driver will be compatible with slots > 2 in TDM mode.
Signed-off-by: Shengjiu Wang shengjiu.wang@freescale.com --- sound/soc/fsl/fsl_esai.c | 14 +++++++++++--- sound/soc/fsl/fsl_esai.h | 8 ++++---- 2 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c index 72d154e..f252370 100644 --- a/sound/soc/fsl/fsl_esai.c +++ b/sound/soc/fsl/fsl_esai.c @@ -38,6 +38,7 @@ * @fsysclk: system clock source to derive HCK, SCK and FS * @fifo_depth: depth of tx/rx FIFO * @slot_width: width of each DAI slot + * @slots: number of slots * @hck_rate: clock rate of desired HCKx clock * @sck_rate: clock rate of desired SCKx clock * @hck_dir: the direction of HCKx pads @@ -56,6 +57,7 @@ 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 +365,7 @@ 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 +513,11 @@ 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 pins = 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 +534,7 @@ 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(pins) | ESAI_xFCR_TIEN : ESAI_xFCR_RE(pins));
regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx), mask, val);
@@ -565,6 +569,7 @@ 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 pins = DIV_ROUND_UP(channels, esai_priv->slots);
switch (cmd) { case SNDRV_PCM_TRIGGER_START: @@ -579,7 +584,7 @@ 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(pins) : ESAI_xCR_RE(pins)); break; case SNDRV_PCM_TRIGGER_SUSPEND: case SNDRV_PCM_TRIGGER_STOP: @@ -783,6 +788,9 @@ static int fsl_esai_probe(struct platform_device *pdev) /* Set a default slot size */ esai_priv->slot_width = 32;
+ /* Set a default slot number */ + esai_priv->slots = 2; + /* Set a default master/slave state */ esai_priv->slave_mode = true;
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
This reverts commit a603c8ee526f5ea9ad9b40710308766299ad8a69.
fsl_asoc_xlate_tdm_slot_mask() will invert the mask, which isn't fit for esai. The default function snd_soc_xlate_tdm_slot_mask() is ok for esai.
Signed-off-by: Shengjiu Wang shengjiu.wang@freescale.com --- sound/soc/fsl/Kconfig | 1 - sound/soc/fsl/fsl_esai.c | 2 -- 2 files changed, 3 deletions(-)
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index f54a8fc..f3012b6 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -49,7 +49,6 @@ config SND_SOC_FSL_ESAI tristate "Enhanced Serial Audio Interface (ESAI) module support" select REGMAP_MMIO select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n - select SND_SOC_FSL_UTILS help Say Y if you want to add Enhanced Synchronous Audio Interface (ESAI) support for the Freescale CPUs. diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c index f252370..b2f6b3e 100644 --- a/sound/soc/fsl/fsl_esai.c +++ b/sound/soc/fsl/fsl_esai.c @@ -18,7 +18,6 @@
#include "fsl_esai.h" #include "imx-pcm.h" -#include "fsl_utils.h"
#define FSL_ESAI_RATES SNDRV_PCM_RATE_8000_192000 #define FSL_ESAI_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ @@ -612,7 +611,6 @@ static struct snd_soc_dai_ops fsl_esai_dai_ops = { .hw_params = fsl_esai_hw_params, .set_sysclk = fsl_esai_set_dai_sysclk, .set_fmt = fsl_esai_set_dai_fmt, - .xlate_tdm_slot_mask = fsl_asoc_xlate_tdm_slot_mask, .set_tdm_slot = fsl_esai_set_dai_tdm_slot, };
Hi Shengjiu,
On Thu, Aug 07, 2014 at 05:33:25PM +0800, Shengjiu Wang wrote:
This reverts commit a603c8ee526f5ea9ad9b40710308766299ad8a69.
fsl_asoc_xlate_tdm_slot_mask() will invert the mask, which isn't fit for esai. The default function snd_soc_xlate_tdm_slot_mask() is ok for esai.
You should describe why that doesn't fit for ESAI and what's the result if keeping it.
Thank you, Nicolin
Signed-off-by: Shengjiu Wang shengjiu.wang@freescale.com
sound/soc/fsl/Kconfig | 1 - sound/soc/fsl/fsl_esai.c | 2 -- 2 files changed, 3 deletions(-)
diff --git a/sound/soc/fsl/Kconfig b/sound/soc/fsl/Kconfig index f54a8fc..f3012b6 100644 --- a/sound/soc/fsl/Kconfig +++ b/sound/soc/fsl/Kconfig @@ -49,7 +49,6 @@ config SND_SOC_FSL_ESAI tristate "Enhanced Serial Audio Interface (ESAI) module support" select REGMAP_MMIO select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n
- select SND_SOC_FSL_UTILS help Say Y if you want to add Enhanced Synchronous Audio Interface (ESAI) support for the Freescale CPUs.
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c index f252370..b2f6b3e 100644 --- a/sound/soc/fsl/fsl_esai.c +++ b/sound/soc/fsl/fsl_esai.c @@ -18,7 +18,6 @@
#include "fsl_esai.h" #include "imx-pcm.h" -#include "fsl_utils.h"
#define FSL_ESAI_RATES SNDRV_PCM_RATE_8000_192000 #define FSL_ESAI_FORMATS (SNDRV_PCM_FMTBIT_S8 | \ @@ -612,7 +611,6 @@ static struct snd_soc_dai_ops fsl_esai_dai_ops = { .hw_params = fsl_esai_hw_params, .set_sysclk = fsl_esai_set_dai_sysclk, .set_fmt = fsl_esai_set_dai_fmt,
- .xlate_tdm_slot_mask = fsl_asoc_xlate_tdm_slot_mask, .set_tdm_slot = fsl_esai_set_dai_tdm_slot,
};
-- 1.7.9.5
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Nicolin Chen -
Shengjiu Wang