[RESEND v4 0/2] Add support for linked list to store acp_stream and tdm support.

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Venkata Prasad Potturu

10 Aug 2022 10 Aug '22

3:29 p.m.

This patch is to add support for linked list to store acp_stream instead static array and add tdm support for acp I2S stream.

Ajit Kumar Pandey (1): ASoC: amd: acp: Initialize list to store acp_stream during pcm_open

Venkata Prasad Potturu (1): ASoC: amd: acp: Add TDM support for acp i2s stream

Changes since v3: -- Modify to spin_lock() in irq handler and spin_lock_irq() in dma open and close functions instead of spin_lock_irqsave(). -- Add tdm support patch to this series. Changes since v2: -- Add locking mechanism in irq handler, linked list updatation and deletion. Changes since v1: -- Fix compile error and remove unused variable.

sound/soc/amd/acp/acp-i2s.c | 80 +++++++++++++++++++++++++++++++- sound/soc/amd/acp/acp-platform.c | 40 ++++++++-------- sound/soc/amd/acp/amd.h | 16 ++++++- 3 files changed, 113 insertions(+), 23 deletions(-)

-- 2.25.1

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Venkata Prasad Potturu

10 Aug 10 Aug

3:29 p.m.

New subject: [RESEND v4 1/2] ASoC: amd: acp: Initialize list to store acp_stream during pcm_open

From: Ajit Kumar Pandey AjitKumar.Pandey@amd.com

We are currently allocating acp_stream during pcm_open and saving it in static array corresponds to array index calculated based on cpu dai->driver id. This approach will fail if we have single dai linked to multiple pcm device as we will have same dai->driver id or array index for multiple pcm open. Initialize new linked list stream_list to store opened pcm stream info dynamically.

Signed-off-by: Ajit Kumar Pandey AjitKumar.Pandey@amd.com Signed-off-by: Venkata Prasad Potturu venkataprasad.potturu@amd.com Reviewed-by: Vijendar Mukunda Vijendar.Mukunda@amd.com --- sound/soc/amd/acp/acp-platform.c | 40 +++++++++++++++----------------- sound/soc/amd/acp/amd.h | 4 +++- 2 files changed, 22 insertions(+), 22 deletions(-)

diff --git a/sound/soc/amd/acp/acp-platform.c b/sound/soc/amd/acp/acp-platform.c index f561d39b33e2..beee53aedeaf 100644 --- a/sound/soc/amd/acp/acp-platform.c +++ b/sound/soc/amd/acp/acp-platform.c @@ -94,7 +94,7 @@ static irqreturn_t i2s_irq_handler(int irq, void *data) struct acp_resource *rsrc = adata->rsrc; struct acp_stream *stream; u16 i2s_flag = 0; - u32 ext_intr_stat, ext_intr_stat1, i; + u32 ext_intr_stat, ext_intr_stat1;

if (!adata) return IRQ_NONE; @@ -104,14 +104,13 @@ static irqreturn_t i2s_irq_handler(int irq, void *data)

ext_intr_stat = readl(ACP_EXTERNAL_INTR_STAT(adata, rsrc->irqp_used));

- for (i = 0; i < ACP_MAX_STREAM; i++) { - stream = adata->stream[i]; + spin_lock(&adata->acp_lock); + list_for_each_entry(stream, &adata->stream_list, list) { if (stream && (ext_intr_stat & stream->irq_bit)) { writel(stream->irq_bit, ACP_EXTERNAL_INTR_STAT(adata, rsrc->irqp_used)); snd_pcm_period_elapsed(stream->substream); i2s_flag = 1; - break; } if (adata->rsrc->no_of_ctrls == 2) { if (stream && (ext_intr_stat1 & stream->irq_bit)) { @@ -119,10 +118,10 @@ static irqreturn_t i2s_irq_handler(int irq, void *data) (rsrc->irqp_used - 1))); snd_pcm_period_elapsed(stream->substream); i2s_flag = 1; - break; } } } + spin_unlock(&adata->acp_lock); if (i2s_flag) return IRQ_HANDLED;

@@ -146,9 +145,8 @@ static void config_pte_for_stream(struct acp_dev_data *adata, struct acp_stream writel(0x01, adata->acp_base + ACPAXI2AXI_ATU_CTRL); }

-static void config_acp_dma(struct acp_dev_data *adata, int cpu_id, int size) +static void config_acp_dma(struct acp_dev_data *adata, struct acp_stream *stream, int size) { - struct acp_stream *stream = adata->stream[cpu_id]; struct snd_pcm_substream *substream = stream->substream; struct acp_resource *rsrc = adata->rsrc; dma_addr_t addr = substream->dma_buffer.addr; @@ -174,13 +172,10 @@ static void config_acp_dma(struct acp_dev_data *adata, int cpu_id, int size)

static int acp_dma_open(struct snd_soc_component *component, struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream); - struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_runtime, 0); struct snd_pcm_runtime *runtime = substream->runtime; struct device *dev = component->dev; struct acp_dev_data *adata = dev_get_drvdata(dev); struct acp_stream *stream; - int stream_id = cpu_dai->driver->id * 2 + substream->stream; int ret;

stream = kzalloc(sizeof(*stream), GFP_KERNEL); @@ -188,7 +183,10 @@ static int acp_dma_open(struct snd_soc_component *component, struct snd_pcm_subs return -ENOMEM;

stream->substream = substream; - adata->stream[stream_id] = stream; + + spin_lock_irq(&adata->acp_lock); + list_add_tail(&stream->list, &adata->stream_list); + spin_unlock_irq(&adata->acp_lock);

if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) runtime->hw = acp_pcm_hardware_playback; @@ -212,16 +210,13 @@ static int acp_dma_hw_params(struct snd_soc_component *component, struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params) { - struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream); struct acp_dev_data *adata = snd_soc_component_get_drvdata(component); - struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_runtime, 0); struct acp_stream *stream = substream->runtime->private_data; - int stream_id = cpu_dai->driver->id * 2 + substream->stream; u64 size = params_buffer_bytes(params);

/* Configure ACP DMA block with params */ config_pte_for_stream(adata, stream); - config_acp_dma(adata, stream_id, size); + config_acp_dma(adata, stream, size);

return 0; } @@ -261,16 +256,15 @@ static int acp_dma_new(struct snd_soc_component *component, static int acp_dma_close(struct snd_soc_component *component, struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *soc_runtime = asoc_substream_to_rtd(substream); - struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_runtime, 0); struct device *dev = component->dev; struct acp_dev_data *adata = dev_get_drvdata(dev); - struct acp_stream *stream; - int stream_id = cpu_dai->driver->id * 2 + substream->stream; + struct acp_stream *stream = substream->runtime->private_data;

- stream = adata->stream[stream_id]; + /* Remove entry from list */ + spin_lock_irq(&adata->acp_lock); + list_del(&stream->list); + spin_unlock_irq(&adata->acp_lock); kfree(stream); - adata->stream[stream_id] = NULL;

return 0; } @@ -305,6 +299,10 @@ int acp_platform_register(struct device *dev) dev_err(dev, "Fail to register acp i2s component\n"); return status; } + + INIT_LIST_HEAD(&adata->stream_list); + spin_lock_init(&adata->acp_lock); + return 0; } EXPORT_SYMBOL_NS_GPL(acp_platform_register, SND_SOC_ACP_COMMON); diff --git a/sound/soc/amd/acp/amd.h b/sound/soc/amd/acp/amd.h index 60a7c95f134f..be8bb8247c4e 100644 --- a/sound/soc/amd/acp/amd.h +++ b/sound/soc/amd/acp/amd.h @@ -91,6 +91,7 @@ struct acp_chip_info { };

struct acp_stream { + struct list_head list; struct snd_pcm_substream *substream; int irq_bit; int dai_id; @@ -123,7 +124,8 @@ struct acp_dev_data { struct snd_soc_dai_driver *dai_driver; int num_dai;

- struct acp_stream *stream[ACP_MAX_STREAM]; + struct list_head stream_list; + spinlock_t acp_lock;

struct snd_soc_acpi_mach *machines; struct platform_device *mach_dev;

-- 2.25.1

Venkata Prasad Potturu

3:29 p.m.

New subject: [RESEND v4 2/2] ASoC: amd: acp: Add TDM support for acp i2s stream

Add callback and code changes to enable ACP I2S controller in TDM mode. Add new fields in acp_stream and acp_dev_data struct to configure tdm related registers for ACP i2s controllers.

Signed-off-by: Venkata Prasad Potturu venkataprasad.potturu@amd.com --- sound/soc/amd/acp/acp-i2s.c | 80 ++++++++++++++++++++++++++++++++++++- sound/soc/amd/acp/amd.h | 12 ++++++ 2 files changed, 91 insertions(+), 1 deletion(-)

diff --git a/sound/soc/amd/acp/acp-i2s.c b/sound/soc/amd/acp/acp-i2s.c index 393f729ef561..ac416572db0d 100644 --- a/sound/soc/amd/acp/acp-i2s.c +++ b/sound/soc/amd/acp/acp-i2s.c @@ -25,6 +25,65 @@

#define DRV_NAME "acp_i2s_playcap"

+static int acp_i2s_set_fmt(struct snd_soc_dai *cpu_dai, + unsigned int fmt) +{ + struct acp_dev_data *adata = snd_soc_dai_get_drvdata(cpu_dai); + int mode; + + mode = fmt & SND_SOC_DAIFMT_FORMAT_MASK; + switch (mode) { + case SND_SOC_DAIFMT_I2S: + adata->tdm_mode = TDM_DISABLE; + break; + case SND_SOC_DAIFMT_DSP_A: + adata->tdm_mode = TDM_ENABLE; + break; + default: + return -EINVAL; + } + return 0; +} + +static int acp_i2s_set_tdm_slot(struct snd_soc_dai *dai, u32 tx_mask, u32 rx_mask, + int slots, int slot_width) +{ + struct device *dev = dai->component->dev; + struct acp_dev_data *adata = snd_soc_dai_get_drvdata(dai); + struct acp_stream *stream; + int slot_len; + + switch (slot_width) { + case SLOT_WIDTH_8: + slot_len = 8; + break; + case SLOT_WIDTH_16: + slot_len = 16; + break; + case SLOT_WIDTH_24: + slot_len = 24; + break; + case SLOT_WIDTH_32: + slot_len = 0; + break; + default: + dev_err(dev, "Unsupported bitdepth %d\n", slot_width); + return -EINVAL; + } + + spin_lock_irq(&adata->acp_lock); + list_for_each_entry(stream, &adata->stream_list, list) { + if (tx_mask && stream->dir == SNDRV_PCM_STREAM_PLAYBACK) + adata->tdm_tx_fmt[stream->dai_id - 1] = + FRM_LEN | (slots << 15) | (slot_len << 18); + else if (rx_mask && stream->dir == SNDRV_PCM_STREAM_CAPTURE) + adata->tdm_rx_fmt[stream->dai_id - 1] = + FRM_LEN | (slots << 15) | (slot_len << 18); + } + spin_unlock_irq(&adata->acp_lock); + return 0; +} + static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { @@ -33,7 +92,7 @@ static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_ struct acp_resource *rsrc; u32 val; u32 xfer_resolution; - u32 reg_val; + u32 reg_val, fmt_reg, tdm_fmt; u32 lrclk_div_val, bclk_div_val;

adata = snd_soc_dai_get_drvdata(dai); @@ -62,12 +121,15 @@ static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_ switch (dai->driver->id) { case I2S_BT_INSTANCE: reg_val = ACP_BTTDM_ITER; + fmt_reg = ACP_BTTDM_TXFRMT; break; case I2S_SP_INSTANCE: reg_val = ACP_I2STDM_ITER; + fmt_reg = ACP_I2STDM_TXFRMT; break; case I2S_HS_INSTANCE: reg_val = ACP_HSTDM_ITER; + fmt_reg = ACP_HSTDM_TXFRMT; break; default: dev_err(dev, "Invalid dai id %x\n", dai->driver->id); @@ -77,12 +139,15 @@ static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_ switch (dai->driver->id) { case I2S_BT_INSTANCE: reg_val = ACP_BTTDM_IRER; + fmt_reg = ACP_BTTDM_RXFRMT; break; case I2S_SP_INSTANCE: reg_val = ACP_I2STDM_IRER; + fmt_reg = ACP_I2STDM_RXFRMT; break; case I2S_HS_INSTANCE: reg_val = ACP_HSTDM_IRER; + fmt_reg = ACP_HSTDM_RXFRMT; break; default: dev_err(dev, "Invalid dai id %x\n", dai->driver->id); @@ -95,6 +160,16 @@ static int acp_i2s_hwparams(struct snd_pcm_substream *substream, struct snd_pcm_ val = val | (xfer_resolution << 3); writel(val, adata->acp_base + reg_val);

+ if (adata->tdm_mode) { + val = readl(adata->acp_base + reg_val); + writel(val | BIT(1), adata->acp_base + reg_val); + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + tdm_fmt = adata->tdm_tx_fmt[dai->driver->id - 1]; + else + tdm_fmt = adata->tdm_rx_fmt[dai->driver->id - 1]; + writel(tdm_fmt, adata->acp_base + fmt_reg); + } + if (rsrc->soc_mclk) { switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: @@ -443,6 +518,7 @@ static int acp_i2s_startup(struct snd_pcm_substream *substream, struct snd_soc_d stream->id = dai->driver->id + dir; stream->dai_id = dai->driver->id; stream->irq_bit = irq_bit; + stream->dir = substream->stream;

return 0; } @@ -452,6 +528,8 @@ const struct snd_soc_dai_ops asoc_acp_cpu_dai_ops = { .hw_params = acp_i2s_hwparams, .prepare = acp_i2s_prepare, .trigger = acp_i2s_trigger, + .set_fmt = acp_i2s_set_fmt, + .set_tdm_slot = acp_i2s_set_tdm_slot, }; EXPORT_SYMBOL_NS_GPL(asoc_acp_cpu_dai_ops, SND_SOC_ACP_COMMON);

diff --git a/sound/soc/amd/acp/amd.h b/sound/soc/amd/acp/amd.h index be8bb8247c4e..5f2119f42271 100644 --- a/sound/soc/amd/acp/amd.h +++ b/sound/soc/amd/acp/amd.h @@ -84,6 +84,14 @@

#define ACP_MAX_STREAM 8

+#define TDM_ENABLE 1 +#define TDM_DISABLE 0 + +#define SLOT_WIDTH_8 0x8 +#define SLOT_WIDTH_16 0x10 +#define SLOT_WIDTH_24 0x18 +#define SLOT_WIDTH_32 0x20 + struct acp_chip_info { char *name; /* Platform name */ unsigned int acp_rev; /* ACP Revision id */ @@ -96,6 +104,7 @@ struct acp_stream { int irq_bit; int dai_id; int id; + int dir; u64 bytescount; u32 reg_offset; u32 pte_offset; @@ -120,6 +129,7 @@ struct acp_dev_data { void __iomem *acp_base; unsigned int i2s_irq;

+ bool tdm_mode; /* SOC specific dais */ struct snd_soc_dai_driver *dai_driver; int num_dai; @@ -134,6 +144,8 @@ struct acp_dev_data { u32 lrclk_div;

struct acp_resource *rsrc; + u32 tdm_tx_fmt[3]; + u32 tdm_rx_fmt[3]; };

union acp_i2stdm_mstrclkgen {

-- 2.25.1

Mark Brown

16 Aug 16 Aug

3:48 p.m.

On Wed, 10 Aug 2022 18:59:11 +0530, Venkata Prasad Potturu wrote:

...

This patch is to add support for linked list to store acp_stream instead static array and add tdm support for acp I2S stream.

Ajit Kumar Pandey (1): ASoC: amd: acp: Initialize list to store acp_stream during pcm_open

[...]

Applied to

https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/2] ASoC: amd: acp: Initialize list to store acp_stream during pcm_open commit: 7929985cfe36c336e3d0753e9f23ac4c7758ea7e [2/2] ASoC: amd: acp: Add TDM support for acp i2s stream commit: 12229b7e50cfa95fda55b83a2617eafd6ac4c8c5

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks, Mark

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