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 --- 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(). 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-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;