| Message ID | 26392af30b3e7b31ee48d5b867d45be8675db046.1566242458.git-series.maxime.ripard@bootlin.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ASoC: sun4i-i2s: Number of fixes and TDM Support | expand |
Hi, Maxime, On 8/19/19 10:25 PM, Maxime Ripard wrote: > From: Maxime Ripard <maxime.ripard@bootlin.com> > > The i2s controller supports TDM, for up to 8 slots. Let's support the TDM > API. > > Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> > --- > sound/soc/sunxi/sun4i-i2s.c | 40 ++++++++++++++++++++++++++++++++------ > 1 file changed, 34 insertions(+), 6 deletions(-) > > diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c > index 0dac09814b65..4f76daeaaed7 100644 > --- a/sound/soc/sunxi/sun4i-i2s.c > +++ b/sound/soc/sunxi/sun4i-i2s.c > @@ -168,6 +168,8 @@ struct sun4i_i2s { > struct reset_control *rst; > > unsigned int mclk_freq; > + unsigned int slots; > + unsigned int slot_width; > > struct snd_dmaengine_dai_dma_data capture_dma_data; > struct snd_dmaengine_dai_dma_data playback_dma_data; > @@ -287,7 +289,7 @@ static bool sun4i_i2s_oversample_is_valid(unsigned int oversample) > > static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, > unsigned int rate, > - unsigned int channels, > + unsigned int slots, > unsigned int word_size) > { > struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); > @@ -335,7 +337,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, > > bclk_parent_rate = i2s->variant->get_bclk_parent_rate(i2s); > bclk_div = sun4i_i2s_get_bclk_div(i2s, bclk_parent_rate, > - rate, channels, word_size); > + rate, slots, word_size); > if (bclk_div < 0) { > dev_err(dai->dev, "Unsupported BCLK divider: %d\n", bclk_div); > return -EINVAL; > @@ -419,6 +421,10 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, > const struct snd_pcm_hw_params *params) > { > unsigned int channels = params_channels(params); > + unsigned int slots = channels; > + > + if (i2s->slots) > + slots = i2s->slots; > > /* Map the channels for playback and capture */ > regmap_write(i2s->regmap, SUN8I_I2S_TX_CHAN_MAP_REG, 0x76543210); > @@ -428,7 +434,6 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, > regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG, > SUN4I_I2S_CHAN_SEL_MASK, > SUN4I_I2S_CHAN_SEL(channels)); > - > regmap_update_bits(i2s->regmap, SUN8I_I2S_RX_CHAN_SEL_REG, > SUN4I_I2S_CHAN_SEL_MASK, > SUN4I_I2S_CHAN_SEL(channels)); > @@ -452,10 +457,18 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, > struct snd_soc_dai *dai) > { > struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); > + unsigned int word_size = params_width(params); > unsigned int channels = params_channels(params); > + unsigned int slots = channels; > int ret, sr, wss; > u32 width; > > + if (i2s->slots) > + slots = i2s->slots; > + > + if (i2s->slot_width) > + word_size = i2s->slot_width; > + > ret = i2s->variant->set_chan_cfg(i2s, params); > if (ret < 0) { > dev_err(dai->dev, "Invalid channel configuration\n"); > @@ -477,15 +490,14 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, > if (sr < 0) > return -EINVAL; > > - wss = i2s->variant->get_wss(i2s, params_width(params)); > + wss = i2s->variant->get_wss(i2s, word_size); > if (wss < 0) > return -EINVAL; > > regmap_field_write(i2s->field_fmt_wss, wss); > regmap_field_write(i2s->field_fmt_sr, sr); > > - return sun4i_i2s_set_clk_rate(dai, params_rate(params), > - channels, params_width(params)); > + return sun4i_i2s_set_clk_rate(dai, params_rate(params), slots, word_size); > } > > static int sun4i_i2s_set_soc_fmt(const struct sun4i_i2s *i2s, > @@ -785,10 +797,26 @@ static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, > return 0; > } > > +static int sun4i_i2s_set_tdm_slot(struct snd_soc_dai *dai, > + unsigned int tx_mask, unsigned int rx_mask, > + int slots, int slot_width) > +{ > + struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); > + > + if (slots > 8) > + return -EINVAL; > + > + i2s->slots = slots; > + i2s->slot_width = slot_width; > + > + return 0; > +} > + > static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = { > .hw_params = sun4i_i2s_hw_params, > .set_fmt = sun4i_i2s_set_fmt, > .set_sysclk = sun4i_i2s_set_sysclk, > + .set_tdm_slot = sun4i_i2s_set_tdm_slot, > .trigger = sun4i_i2s_trigger, > }; > it seems like you forgot to implement sun4i_i2s_dai_ops.set_bclk_ratio because, as I far as I understand, it should alter tdm slots functionality indirectly. Thank you, SS
Hi, On Tue, Aug 20, 2019 at 08:46:30AM +0300, Sergey Suloev wrote: > Hi, Maxime, > > On 8/19/19 10:25 PM, Maxime Ripard wrote: > > From: Maxime Ripard <maxime.ripard@bootlin.com> > > > > The i2s controller supports TDM, for up to 8 slots. Let's support the TDM > > API. > > > > Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> > > --- > > sound/soc/sunxi/sun4i-i2s.c | 40 ++++++++++++++++++++++++++++++++------ > > 1 file changed, 34 insertions(+), 6 deletions(-) > > > > diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c > > index 0dac09814b65..4f76daeaaed7 100644 > > --- a/sound/soc/sunxi/sun4i-i2s.c > > +++ b/sound/soc/sunxi/sun4i-i2s.c > > @@ -168,6 +168,8 @@ struct sun4i_i2s { > > struct reset_control *rst; > > unsigned int mclk_freq; > > + unsigned int slots; > > + unsigned int slot_width; > > struct snd_dmaengine_dai_dma_data capture_dma_data; > > struct snd_dmaengine_dai_dma_data playback_dma_data; > > @@ -287,7 +289,7 @@ static bool sun4i_i2s_oversample_is_valid(unsigned int oversample) > > static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, > > unsigned int rate, > > - unsigned int channels, > > + unsigned int slots, > > unsigned int word_size) > > { > > struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); > > @@ -335,7 +337,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, > > bclk_parent_rate = i2s->variant->get_bclk_parent_rate(i2s); > > bclk_div = sun4i_i2s_get_bclk_div(i2s, bclk_parent_rate, > > - rate, channels, word_size); > > + rate, slots, word_size); > > if (bclk_div < 0) { > > dev_err(dai->dev, "Unsupported BCLK divider: %d\n", bclk_div); > > return -EINVAL; > > @@ -419,6 +421,10 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, > > const struct snd_pcm_hw_params *params) > > { > > unsigned int channels = params_channels(params); > > + unsigned int slots = channels; > > + > > + if (i2s->slots) > > + slots = i2s->slots; > > /* Map the channels for playback and capture */ > > regmap_write(i2s->regmap, SUN8I_I2S_TX_CHAN_MAP_REG, 0x76543210); > > @@ -428,7 +434,6 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, > > regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG, > > SUN4I_I2S_CHAN_SEL_MASK, > > SUN4I_I2S_CHAN_SEL(channels)); > > - > > regmap_update_bits(i2s->regmap, SUN8I_I2S_RX_CHAN_SEL_REG, > > SUN4I_I2S_CHAN_SEL_MASK, > > SUN4I_I2S_CHAN_SEL(channels)); > > @@ -452,10 +457,18 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, > > struct snd_soc_dai *dai) > > { > > struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); > > + unsigned int word_size = params_width(params); > > unsigned int channels = params_channels(params); > > + unsigned int slots = channels; > > int ret, sr, wss; > > u32 width; > > + if (i2s->slots) > > + slots = i2s->slots; > > + > > + if (i2s->slot_width) > > + word_size = i2s->slot_width; > > + > > ret = i2s->variant->set_chan_cfg(i2s, params); > > if (ret < 0) { > > dev_err(dai->dev, "Invalid channel configuration\n"); > > @@ -477,15 +490,14 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, > > if (sr < 0) > > return -EINVAL; > > - wss = i2s->variant->get_wss(i2s, params_width(params)); > > + wss = i2s->variant->get_wss(i2s, word_size); > > if (wss < 0) > > return -EINVAL; > > regmap_field_write(i2s->field_fmt_wss, wss); > > regmap_field_write(i2s->field_fmt_sr, sr); > > - return sun4i_i2s_set_clk_rate(dai, params_rate(params), > > - channels, params_width(params)); > > + return sun4i_i2s_set_clk_rate(dai, params_rate(params), slots, word_size); > > } > > static int sun4i_i2s_set_soc_fmt(const struct sun4i_i2s *i2s, > > @@ -785,10 +797,26 @@ static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, > > return 0; > > } > > +static int sun4i_i2s_set_tdm_slot(struct snd_soc_dai *dai, > > + unsigned int tx_mask, unsigned int rx_mask, > > + int slots, int slot_width) > > +{ > > + struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); > > + > > + if (slots > 8) > > + return -EINVAL; > > + > > + i2s->slots = slots; > > + i2s->slot_width = slot_width; > > + > > + return 0; > > +} > > + > > static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = { > > .hw_params = sun4i_i2s_hw_params, > > .set_fmt = sun4i_i2s_set_fmt, > > .set_sysclk = sun4i_i2s_set_sysclk, > > + .set_tdm_slot = sun4i_i2s_set_tdm_slot, > > .trigger = sun4i_i2s_trigger, > > }; > > it seems like you forgot to implement sun4i_i2s_dai_ops.set_bclk_ratio > because, as I far as I understand, it should alter tdm slots functionality > indirectly. As far as I can see, while this indeed changes a few things on the TDM setup, it's optional, orthogonal and it has a single user in the tree (some intel platform card). So I'd say that if someone ever needs it, we can have it, but it's not a blocker. Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com
On Wed, Aug 21, 2019 at 02:05:51PM +0200, Maxime Ripard wrote: > On Tue, Aug 20, 2019 at 08:46:30AM +0300, Sergey Suloev wrote: Please delete unneeded context from mails when replying. Doing this makes it much easier to find your reply in the message, helping ensure it won't be missed by people scrolling through the irrelevant quoted material. > > > .set_sysclk = sun4i_i2s_set_sysclk, > > > + .set_tdm_slot = sun4i_i2s_set_tdm_slot, > > > .trigger = sun4i_i2s_trigger, > > > }; > > it seems like you forgot to implement sun4i_i2s_dai_ops.set_bclk_ratio > > because, as I far as I understand, it should alter tdm slots functionality > > indirectly. > As far as I can see, while this indeed changes a few things on the TDM > setup, it's optional, orthogonal and it has a single user in the tree > (some intel platform card). > So I'd say that if someone ever needs it, we can have it, but it's not > a blocker. Yes, that's a compltely orthogonal callback.
Hi, Maxime, On 8/21/19 3:05 PM, Maxime Ripard wrote: > Hi, > > On Tue, Aug 20, 2019 at 08:46:30AM +0300, Sergey Suloev wrote: >> Hi, Maxime, >> >> On 8/19/19 10:25 PM, Maxime Ripard wrote: >>> From: Maxime Ripard <maxime.ripard@bootlin.com> >>> >>> The i2s controller supports TDM, for up to 8 slots. Let's support the TDM >>> API. >>> >>> Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> >>> --- >>> sound/soc/sunxi/sun4i-i2s.c | 40 ++++++++++++++++++++++++++++++++------ >>> 1 file changed, 34 insertions(+), 6 deletions(-) >>> >>> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c >>> index 0dac09814b65..4f76daeaaed7 100644 >>> --- a/sound/soc/sunxi/sun4i-i2s.c >>> +++ b/sound/soc/sunxi/sun4i-i2s.c >>> @@ -168,6 +168,8 @@ struct sun4i_i2s { >>> struct reset_control *rst; >>> unsigned int mclk_freq; >>> + unsigned int slots; >>> + unsigned int slot_width; >>> struct snd_dmaengine_dai_dma_data capture_dma_data; >>> struct snd_dmaengine_dai_dma_data playback_dma_data; >>> @@ -287,7 +289,7 @@ static bool sun4i_i2s_oversample_is_valid(unsigned int oversample) >>> static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, >>> unsigned int rate, >>> - unsigned int channels, >>> + unsigned int slots, >>> unsigned int word_size) >>> { >>> struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); >>> @@ -335,7 +337,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, >>> bclk_parent_rate = i2s->variant->get_bclk_parent_rate(i2s); >>> bclk_div = sun4i_i2s_get_bclk_div(i2s, bclk_parent_rate, >>> - rate, channels, word_size); >>> + rate, slots, word_size); >>> if (bclk_div < 0) { >>> dev_err(dai->dev, "Unsupported BCLK divider: %d\n", bclk_div); >>> return -EINVAL; >>> @@ -419,6 +421,10 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, >>> const struct snd_pcm_hw_params *params) >>> { >>> unsigned int channels = params_channels(params); >>> + unsigned int slots = channels; >>> + >>> + if (i2s->slots) >>> + slots = i2s->slots; >>> /* Map the channels for playback and capture */ >>> regmap_write(i2s->regmap, SUN8I_I2S_TX_CHAN_MAP_REG, 0x76543210); >>> @@ -428,7 +434,6 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, >>> regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG, >>> SUN4I_I2S_CHAN_SEL_MASK, >>> SUN4I_I2S_CHAN_SEL(channels)); >>> - >>> regmap_update_bits(i2s->regmap, SUN8I_I2S_RX_CHAN_SEL_REG, >>> SUN4I_I2S_CHAN_SEL_MASK, >>> SUN4I_I2S_CHAN_SEL(channels)); >>> @@ -452,10 +457,18 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, >>> struct snd_soc_dai *dai) >>> { >>> struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); >>> + unsigned int word_size = params_width(params); >>> unsigned int channels = params_channels(params); >>> + unsigned int slots = channels; >>> int ret, sr, wss; >>> u32 width; >>> + if (i2s->slots) >>> + slots = i2s->slots; >>> + >>> + if (i2s->slot_width) >>> + word_size = i2s->slot_width; >>> + >>> ret = i2s->variant->set_chan_cfg(i2s, params); >>> if (ret < 0) { >>> dev_err(dai->dev, "Invalid channel configuration\n"); >>> @@ -477,15 +490,14 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, >>> if (sr < 0) >>> return -EINVAL; >>> - wss = i2s->variant->get_wss(i2s, params_width(params)); >>> + wss = i2s->variant->get_wss(i2s, word_size); >>> if (wss < 0) >>> return -EINVAL; >>> regmap_field_write(i2s->field_fmt_wss, wss); >>> regmap_field_write(i2s->field_fmt_sr, sr); >>> - return sun4i_i2s_set_clk_rate(dai, params_rate(params), >>> - channels, params_width(params)); >>> + return sun4i_i2s_set_clk_rate(dai, params_rate(params), slots, word_size); >>> } >>> static int sun4i_i2s_set_soc_fmt(const struct sun4i_i2s *i2s, >>> @@ -785,10 +797,26 @@ static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, >>> return 0; >>> } >>> +static int sun4i_i2s_set_tdm_slot(struct snd_soc_dai *dai, >>> + unsigned int tx_mask, unsigned int rx_mask, >>> + int slots, int slot_width) >>> +{ >>> + struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); >>> + >>> + if (slots > 8) >>> + return -EINVAL; >>> + >>> + i2s->slots = slots; >>> + i2s->slot_width = slot_width; >>> + >>> + return 0; >>> +} >>> + >>> static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = { >>> .hw_params = sun4i_i2s_hw_params, >>> .set_fmt = sun4i_i2s_set_fmt, >>> .set_sysclk = sun4i_i2s_set_sysclk, >>> + .set_tdm_slot = sun4i_i2s_set_tdm_slot, >>> .trigger = sun4i_i2s_trigger, >>> }; >> it seems like you forgot to implement sun4i_i2s_dai_ops.set_bclk_ratio >> because, as I far as I understand, it should alter tdm slots functionality >> indirectly. > As far as I can see, while this indeed changes a few things on the TDM > setup, it's optional, orthogonal and it has a single user in the tree > (some intel platform card). > > So I'd say that if someone ever needs it, we can have it, but it's not > a blocker. "orthogonal" meaning that one can achieve the same effect with using "sun4i_i2s_set_tdm_slot" instead of "set_bclk_ratio" ? For example, for WM8731 codec in "non-USB" master mode should generate BCLK = 64 * FS, and I had to implement "set_bclk_ratio" in order to setup it. Note, that this is 100% mandatory condition for the code to operate in this mode. Did you mean that now the correct way would be using "sun4i_i2s_set_tdm_slot" instead ? Thank you > > Maxime > > -- > Maxime Ripard, Bootlin > Embedded Linux and Kernel engineering > https://bootlin.com
diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c index 0dac09814b65..4f76daeaaed7 100644 --- a/sound/soc/sunxi/sun4i-i2s.c +++ b/sound/soc/sunxi/sun4i-i2s.c @@ -168,6 +168,8 @@ struct sun4i_i2s { struct reset_control *rst; unsigned int mclk_freq; + unsigned int slots; + unsigned int slot_width; struct snd_dmaengine_dai_dma_data capture_dma_data; struct snd_dmaengine_dai_dma_data playback_dma_data; @@ -287,7 +289,7 @@ static bool sun4i_i2s_oversample_is_valid(unsigned int oversample) static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, unsigned int rate, - unsigned int channels, + unsigned int slots, unsigned int word_size) { struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); @@ -335,7 +337,7 @@ static int sun4i_i2s_set_clk_rate(struct snd_soc_dai *dai, bclk_parent_rate = i2s->variant->get_bclk_parent_rate(i2s); bclk_div = sun4i_i2s_get_bclk_div(i2s, bclk_parent_rate, - rate, channels, word_size); + rate, slots, word_size); if (bclk_div < 0) { dev_err(dai->dev, "Unsupported BCLK divider: %d\n", bclk_div); return -EINVAL; @@ -419,6 +421,10 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, const struct snd_pcm_hw_params *params) { unsigned int channels = params_channels(params); + unsigned int slots = channels; + + if (i2s->slots) + slots = i2s->slots; /* Map the channels for playback and capture */ regmap_write(i2s->regmap, SUN8I_I2S_TX_CHAN_MAP_REG, 0x76543210); @@ -428,7 +434,6 @@ static int sun8i_i2s_set_chan_cfg(const struct sun4i_i2s *i2s, regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG, SUN4I_I2S_CHAN_SEL_MASK, SUN4I_I2S_CHAN_SEL(channels)); - regmap_update_bits(i2s->regmap, SUN8I_I2S_RX_CHAN_SEL_REG, SUN4I_I2S_CHAN_SEL_MASK, SUN4I_I2S_CHAN_SEL(channels)); @@ -452,10 +457,18 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); + unsigned int word_size = params_width(params); unsigned int channels = params_channels(params); + unsigned int slots = channels; int ret, sr, wss; u32 width; + if (i2s->slots) + slots = i2s->slots; + + if (i2s->slot_width) + word_size = i2s->slot_width; + ret = i2s->variant->set_chan_cfg(i2s, params); if (ret < 0) { dev_err(dai->dev, "Invalid channel configuration\n"); @@ -477,15 +490,14 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream, if (sr < 0) return -EINVAL; - wss = i2s->variant->get_wss(i2s, params_width(params)); + wss = i2s->variant->get_wss(i2s, word_size); if (wss < 0) return -EINVAL; regmap_field_write(i2s->field_fmt_wss, wss); regmap_field_write(i2s->field_fmt_sr, sr); - return sun4i_i2s_set_clk_rate(dai, params_rate(params), - channels, params_width(params)); + return sun4i_i2s_set_clk_rate(dai, params_rate(params), slots, word_size); } static int sun4i_i2s_set_soc_fmt(const struct sun4i_i2s *i2s, @@ -785,10 +797,26 @@ static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id, return 0; } +static int sun4i_i2s_set_tdm_slot(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai); + + if (slots > 8) + return -EINVAL; + + i2s->slots = slots; + i2s->slot_width = slot_width; + + return 0; +} + static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = { .hw_params = sun4i_i2s_hw_params, .set_fmt = sun4i_i2s_set_fmt, .set_sysclk = sun4i_i2s_set_sysclk, + .set_tdm_slot = sun4i_i2s_set_tdm_slot, .trigger = sun4i_i2s_trigger, };