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Subject[PATCH v8 07/10] ASoC: qcom: Add support for codec dma driver
Date
From: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>

Upadate lpass cpu and platform driver to support audio over codec dma
in ADSP bypass use case.

Signed-off-by: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>
Co-developed-by: Venkata Prasad Potturu <potturu@codeaurora.org>
Signed-off-by: Venkata Prasad Potturu <potturu@codeaurora.org>
---
sound/soc/qcom/lpass-cpu.c | 59 ++++-
sound/soc/qcom/lpass-platform.c | 499 ++++++++++++++++++++++++++++++++++++++--
2 files changed, 537 insertions(+), 21 deletions(-)

diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index 4fb9669..a5a46bc 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -1042,7 +1042,9 @@ static void of_lpass_cpu_parse_dai_data(struct device *dev,
}
if (id == LPASS_DP_RX) {
data->hdmi_port_enable = 1;
- } else {
+ } else if (is_cdc_dma_port(id))
+ data->codec_dma_enable = 1;
+ else {
data->mi2s_playback_sd_mode[id] =
of_lpass_cpu_parse_sd_lines(dev, node,
"qcom,playback-sd-lines");
@@ -1057,6 +1059,7 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)
{
struct lpass_data *drvdata;
struct device_node *dsp_of_node;
+ struct resource *res;
struct lpass_variant *variant;
struct device *dev = &pdev->dev;
const struct of_device_id *match;
@@ -1082,6 +1085,58 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)

of_lpass_cpu_parse_dai_data(dev, drvdata);

+ drvdata->num_clks = variant->num_clks;
+ if (drvdata->codec_dma_enable) {
+ drvdata->rxtx_lpaif =
+ devm_platform_ioremap_resource_byname(pdev, "lpass-rxtx-lpaif");
+ if (IS_ERR(drvdata->rxtx_lpaif))
+ return PTR_ERR(drvdata->rxtx_lpaif);
+
+ drvdata->va_lpaif = devm_platform_ioremap_resource_byname(pdev, "lpass-va-lpaif");
+ if (IS_ERR(drvdata->va_lpaif))
+ return PTR_ERR(drvdata->va_lpaif);
+
+ lpass_rxtx_regmap_config.max_register = LPAIF_CDC_RXTX_WRDMAPER_REG(variant,
+ variant->rxtx_wrdma_channels +
+ variant->rxtx_wrdma_channel_start, LPASS_CDC_DMA_TX3);
+
+ drvdata->rxtx_lpaif_map = devm_regmap_init_mmio(dev, drvdata->rxtx_lpaif,
+ &lpass_rxtx_regmap_config);
+ if (IS_ERR(drvdata->rxtx_lpaif_map)) {
+ dev_err(dev, "error initializing rxtx regmap: %ld\n",
+ PTR_ERR(drvdata->rxtx_lpaif_map));
+ return PTR_ERR(drvdata->rxtx_lpaif_map);
+ }
+ lpass_va_regmap_config.max_register = LPAIF_CDC_VA_WRDMAPER_REG(variant,
+ variant->va_wrdma_channels +
+ variant->va_wrdma_channel_start, LPASS_CDC_DMA_VA_TX0);
+
+ drvdata->va_lpaif_map = devm_regmap_init_mmio(dev, drvdata->va_lpaif,
+ &lpass_va_regmap_config);
+ if (IS_ERR(drvdata->va_lpaif_map)) {
+ dev_err(dev, "error initializing va regmap: %ld\n",
+ PTR_ERR(drvdata->va_lpaif_map));
+ return PTR_ERR(drvdata->va_lpaif_map);
+ }
+ drvdata->cdc_clks = devm_kcalloc(dev, variant->cdc_dma_num_clks,
+ sizeof(*drvdata->cdc_clks), GFP_KERNEL);
+ drvdata->cdc_num_clks = variant->cdc_dma_num_clks;
+
+ for (i = 0; i < drvdata->cdc_num_clks; i++)
+ drvdata->cdc_clks[i].id = variant->cdc_dma_clk_names[i];
+
+ ret = devm_clk_bulk_get(dev, drvdata->cdc_num_clks, drvdata->cdc_clks);
+ if (ret) {
+ dev_err(dev, "Failed to get clocks %d\n", ret);
+ return ret;
+ }
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpass-rxtx-cdc-dma-lpm");
+ drvdata->rxtx_cdc_dma_lpm_buf = res->start;
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpass-va-cdc-dma-lpm");
+ drvdata->va_cdc_dma_lpm_buf = res->start;
+ }
drvdata->lpaif = devm_platform_ioremap_resource_byname(pdev, "lpass-lpaif");
if (IS_ERR(drvdata->lpaif))
return PTR_ERR(drvdata->lpaif);
@@ -1124,7 +1179,7 @@ int asoc_qcom_lpass_cpu_platform_probe(struct platform_device *pdev)

for (i = 0; i < variant->num_dai; i++) {
dai_id = variant->dai_driver[i].id;
- if (dai_id == LPASS_DP_RX)
+ if (dai_id == LPASS_DP_RX || is_cdc_dma_port(dai_id))
continue;

drvdata->mi2s_osr_clk[dai_id] = devm_clk_get_optional(dev,
diff --git a/sound/soc/qcom/lpass-platform.c b/sound/soc/qcom/lpass-platform.c
index 5d77240..3b9a060 100644
--- a/sound/soc/qcom/lpass-platform.c
+++ b/sound/soc/qcom/lpass-platform.c
@@ -20,6 +20,9 @@

#define LPASS_PLATFORM_BUFFER_SIZE (24 * 2 * 1024)
#define LPASS_PLATFORM_PERIODS 2
+#define LPASS_RXTX_CDC_DMA_LPM_BUFF_SIZE (24 * 1024)
+#define LPASS_VA_CDC_DMA_LPM_BUFF_SIZE (12 * 1024)
+#define LPASS_CDC_DMA_REGISTER_FIELDS_MAX 15

static const struct snd_pcm_hardware lpass_platform_pcm_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
@@ -45,6 +48,99 @@ static const struct snd_pcm_hardware lpass_platform_pcm_hardware = {
.fifo_size = 0,
};

+static const struct snd_pcm_hardware lpass_platform_rxtx_hardware = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_RESUME,
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .rate_min = 8000,
+ .rate_max = 192000,
+ .channels_min = 1,
+ .channels_max = 8,
+ .buffer_bytes_max = LPASS_RXTX_CDC_DMA_LPM_BUFF_SIZE,
+ .period_bytes_max = LPASS_RXTX_CDC_DMA_LPM_BUFF_SIZE /
+ LPASS_PLATFORM_PERIODS,
+ .period_bytes_min = LPASS_RXTX_CDC_DMA_LPM_BUFF_SIZE /
+ LPASS_PLATFORM_PERIODS,
+ .periods_min = LPASS_PLATFORM_PERIODS,
+ .periods_max = LPASS_PLATFORM_PERIODS,
+ .fifo_size = 0,
+};
+
+static const struct snd_pcm_hardware lpass_platform_va_hardware = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_PAUSE |
+ SNDRV_PCM_INFO_RESUME,
+ .formats = SNDRV_PCM_FMTBIT_S16 |
+ SNDRV_PCM_FMTBIT_S24 |
+ SNDRV_PCM_FMTBIT_S32,
+ .rates = SNDRV_PCM_RATE_8000_192000,
+ .rate_min = 8000,
+ .rate_max = 192000,
+ .channels_min = 1,
+ .channels_max = 8,
+ .buffer_bytes_max = LPASS_VA_CDC_DMA_LPM_BUFF_SIZE,
+ .period_bytes_max = LPASS_VA_CDC_DMA_LPM_BUFF_SIZE /
+ LPASS_PLATFORM_PERIODS,
+ .period_bytes_min = LPASS_VA_CDC_DMA_LPM_BUFF_SIZE /
+ LPASS_PLATFORM_PERIODS,
+ .periods_min = LPASS_PLATFORM_PERIODS,
+ .periods_max = LPASS_PLATFORM_PERIODS,
+ .fifo_size = 0,
+};
+
+static int lpass_platform_alloc_rxtx_dmactl_fields(struct device *dev,
+ struct regmap *map)
+{
+ struct lpass_data *drvdata = dev_get_drvdata(dev);
+ struct lpass_variant *v = drvdata->variant;
+ struct lpaif_dmactl *rd_dmactl, *wr_dmactl;
+ int rval;
+
+ rd_dmactl = devm_kzalloc(dev, sizeof(*rd_dmactl), GFP_KERNEL);
+ if (rd_dmactl == NULL)
+ return -ENOMEM;
+
+ wr_dmactl = devm_kzalloc(dev, sizeof(*wr_dmactl), GFP_KERNEL);
+ if (wr_dmactl == NULL)
+ return -ENOMEM;
+
+ drvdata->rxtx_rd_dmactl = rd_dmactl;
+ drvdata->rxtx_wr_dmactl = wr_dmactl;
+
+ rval = devm_regmap_field_bulk_alloc(dev, map, &rd_dmactl->intf,
+ &v->rxtx_rdma_intf, LPASS_CDC_DMA_REGISTER_FIELDS_MAX);
+ if (rval)
+ return rval;
+
+ return devm_regmap_field_bulk_alloc(dev, map, &wr_dmactl->intf,
+ &v->rxtx_wrdma_intf, LPASS_CDC_DMA_REGISTER_FIELDS_MAX);
+}
+
+static int lpass_platform_alloc_va_dmactl_fields(struct device *dev,
+ struct regmap *map)
+{
+ struct lpass_data *drvdata = dev_get_drvdata(dev);
+ struct lpass_variant *v = drvdata->variant;
+ struct lpaif_dmactl *wr_dmactl;
+
+ wr_dmactl = devm_kzalloc(dev, sizeof(*wr_dmactl), GFP_KERNEL);
+ if (wr_dmactl == NULL)
+ return -ENOMEM;
+
+ drvdata->va_wr_dmactl = wr_dmactl;
+ return devm_regmap_field_bulk_alloc(dev, map, &wr_dmactl->intf,
+ &v->va_wrdma_intf, LPASS_CDC_DMA_REGISTER_FIELDS_MAX);
+}
+
+
static int lpass_platform_alloc_dmactl_fields(struct device *dev,
struct regmap *map)
{
@@ -123,25 +219,55 @@ static int lpass_platform_pcmops_open(struct snd_soc_component *component,
return dma_ch;
}

- if (cpu_dai->driver->id == LPASS_DP_RX) {
- map = drvdata->hdmiif_map;
- drvdata->hdmi_substream[dma_ch] = substream;
- } else {
+ switch (dai_id) {
+ case MI2S_PRIMARY ... MI2S_QUINARY:
map = drvdata->lpaif_map;
drvdata->substream[dma_ch] = substream;
+ break;
+ case LPASS_DP_RX:
+ map = drvdata->hdmiif_map;
+ drvdata->hdmi_substream[dma_ch] = substream;
+ break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ map = drvdata->rxtx_lpaif_map;
+ drvdata->rxtx_substream[dma_ch] = substream;
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ map = drvdata->va_lpaif_map;
+ drvdata->va_substream[dma_ch] = substream;
+ break;
+ default:
+ break;
}
+
data->dma_ch = dma_ch;
- ret = regmap_write(map,
- LPAIF_DMACTL_REG(v, dma_ch, dir, data->i2s_port), 0);
- if (ret) {
- dev_err(soc_runtime->dev,
- "error writing to rdmactl reg: %d\n", ret);
- return ret;
+ switch (dai_id) {
+ case MI2S_PRIMARY ... MI2S_QUINARY:
+ case LPASS_DP_RX:
+ ret = regmap_write(map, LPAIF_DMACTL_REG(v, dma_ch, dir, data->i2s_port), 0);
+ if (ret) {
+ kfree(data);
+ dev_err(soc_runtime->dev, "error writing to rdmactl reg: %d\n", ret);
+ return ret;
+ }
+ snd_soc_set_runtime_hwparams(substream, &lpass_platform_pcm_hardware);
+ runtime->dma_bytes = lpass_platform_pcm_hardware.buffer_bytes_max;
+ break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ snd_soc_set_runtime_hwparams(substream, &lpass_platform_rxtx_hardware);
+ runtime->dma_bytes = lpass_platform_rxtx_hardware.buffer_bytes_max;
+ snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ snd_soc_set_runtime_hwparams(substream, &lpass_platform_va_hardware);
+ runtime->dma_bytes = lpass_platform_va_hardware.buffer_bytes_max;
+ snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
+ break;
+ default:
+ break;
}
- snd_soc_set_runtime_hwparams(substream, &lpass_platform_pcm_hardware);
-
- runtime->dma_bytes = lpass_platform_pcm_hardware.buffer_bytes_max;
-
ret = snd_pcm_hw_constraint_integer(runtime,
SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0) {
@@ -166,10 +292,25 @@ static int lpass_platform_pcmops_close(struct snd_soc_component *component,
unsigned int dai_id = cpu_dai->driver->id;

data = runtime->private_data;
- if (dai_id == LPASS_DP_RX)
- drvdata->hdmi_substream[data->dma_ch] = NULL;
- else
+
+ switch (dai_id) {
+ case MI2S_PRIMARY ... MI2S_QUINARY:
drvdata->substream[data->dma_ch] = NULL;
+ break;
+ case LPASS_DP_RX:
+ drvdata->hdmi_substream[data->dma_ch] = NULL;
+ break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ drvdata->rxtx_substream[data->dma_ch] = NULL;
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ drvdata->va_substream[data->dma_ch] = NULL;
+ break;
+ default:
+ break;
+ }
+
if (v->free_dma_channel)
v->free_dma_channel(drvdata, data->dma_ch, dai_id);

@@ -209,9 +350,25 @@ static void __lpass_get_lpaif_handle(struct snd_pcm_substream *substream,
l_dmactl = drvdata->hdmi_rd_dmactl;
l_map = drvdata->hdmiif_map;
break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ l_id = pcm_data->dma_ch;
+ l_dmactl = drvdata->rxtx_rd_dmactl;
+ l_map = drvdata->rxtx_lpaif_map;
+ break;
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ l_id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;
+ l_dmactl = drvdata->rxtx_wr_dmactl;
+ l_map = drvdata->rxtx_lpaif_map;
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ l_id = pcm_data->dma_ch - v->va_wrdma_channel_start;
+ l_dmactl = drvdata->va_wr_dmactl;
+ l_map = drvdata->va_lpaif_map;
+ break;
default:
break;
}
+
if (dmactl)
*dmactl = l_dmactl;
if (id)
@@ -299,6 +456,10 @@ static int lpass_platform_pcmops_hw_params(struct snd_soc_component *component,
}

break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX0:
+ break;
default:
dev_err(soc_runtime->dev, "%s: invalid interface: %d\n", __func__, dai_id);
break;
@@ -387,6 +548,9 @@ static int lpass_platform_pcmops_hw_free(struct snd_soc_component *component,
struct regmap *map;
unsigned int dai_id = cpu_dai->driver->id;

+ if (is_cdc_dma_port(dai_id))
+ return 0;
+
__lpass_get_lpaif_handle(substream, component, NULL, NULL, &map);
if (!map) {
dev_err(soc_runtime->dev, "failed to get dmactl handle\n");
@@ -449,6 +613,14 @@ static int lpass_platform_pcmops_prepare(struct snd_soc_component *component,
return ret;
}

+ if (is_cdc_dma_port(dai_id)) {
+ ret = regmap_fields_write(dmactl->fifowm, id, LPAIF_DMACTL_FIFOWM_8);
+ if (ret) {
+ dev_err(soc_runtime->dev, "error writing fifowm field to dmactl reg: %d, id: %d\n",
+ ret, id);
+ return ret;
+ }
+ }
ret = regmap_fields_write(dmactl->enable, id, LPAIF_DMACTL_ENABLE_ON);
if (ret) {
dev_err(soc_runtime->dev, "error writing to rdmactl reg: %d\n",
@@ -532,6 +704,35 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component,
val_mask = LPAIF_IRQ_ALL(ch);
val_irqen = LPAIF_IRQ_ALL(ch);
break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ ret = regmap_fields_write(dmactl->dyncclk, id, LPAIF_DMACTL_DYNCLK_ON);
+ if (ret) {
+ dev_err(soc_runtime->dev,
+ "error writing to rdmactl reg field: %d\n", ret);
+ return ret;
+ }
+ reg_irqclr = LPAIF_RXTX_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST);
+ val_irqclr = LPAIF_IRQ_ALL(ch);
+
+ reg_irqen = LPAIF_RXTX_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST);
+ val_mask = LPAIF_IRQ_ALL(ch);
+ val_irqen = LPAIF_IRQ_ALL(ch);
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ ret = regmap_fields_write(dmactl->dyncclk, id, LPAIF_DMACTL_DYNCLK_ON);
+ if (ret) {
+ dev_err(soc_runtime->dev,
+ "error writing to rdmactl reg field: %d\n", ret);
+ return ret;
+ }
+ reg_irqclr = LPAIF_VA_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST);
+ val_irqclr = LPAIF_IRQ_ALL(ch);
+
+ reg_irqen = LPAIF_VA_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST);
+ val_mask = LPAIF_IRQ_ALL(ch);
+ val_irqen = LPAIF_IRQ_ALL(ch);
+ break;
default:
dev_err(soc_runtime->dev, "%s: invalid %d interface\n", __func__, dai_id);
return -EINVAL;
@@ -583,6 +784,37 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component,
val_mask = LPAIF_IRQ_ALL(ch);
val_irqen = 0;
break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ ret = regmap_fields_write(dmactl->dyncclk, id, LPAIF_DMACTL_DYNCLK_OFF);
+ if (ret) {
+ dev_err(soc_runtime->dev,
+ "error writing to rdmactl reg field: %d\n", ret);
+ return ret;
+ }
+
+ reg_irqclr = LPAIF_RXTX_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST);
+ val_irqclr = LPAIF_IRQ_ALL(ch);
+
+ reg_irqen = LPAIF_RXTX_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST);
+ val_mask = LPAIF_IRQ_ALL(ch);
+ val_irqen = LPAIF_IRQ_ALL(ch);
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ ret = regmap_fields_write(dmactl->dyncclk, id, LPAIF_DMACTL_DYNCLK_OFF);
+ if (ret) {
+ dev_err(soc_runtime->dev,
+ "error writing to rdmactl reg field: %d\n", ret);
+ return ret;
+ }
+
+ reg_irqclr = LPAIF_VA_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST);
+ val_irqclr = LPAIF_IRQ_ALL(ch);
+
+ reg_irqen = LPAIF_VA_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST);
+ val_mask = LPAIF_IRQ_ALL(ch);
+ val_irqen = LPAIF_IRQ_ALL(ch);
+ break;
default:
dev_err(soc_runtime->dev, "%s: invalid %d interface\n", __func__, dai_id);
return -EINVAL;
@@ -642,6 +874,39 @@ static snd_pcm_uframes_t lpass_platform_pcmops_pointer(
return bytes_to_frames(substream->runtime, curr_addr - base_addr);
}

+static int lpass_platform_cdc_dma_mmap(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ unsigned long size, offset;
+
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+ size = vma->vm_end - vma->vm_start;
+ offset = vma->vm_pgoff << PAGE_SHIFT;
+ return io_remap_pfn_range(vma, vma->vm_start,
+ (runtime->dma_addr + offset) >> PAGE_SHIFT,
+ size, vma->vm_page_prot);
+
+}
+
+static int lpass_platform_pcmops_mmap(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+ 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);
+ unsigned int dai_id = cpu_dai->driver->id;
+ int err;
+
+ if (is_cdc_dma_port(dai_id))
+ err = lpass_platform_cdc_dma_mmap(component, substream, vma);
+ else
+ err = snd_pcm_lib_default_mmap(substream, vma);
+
+ return err;
+}
+
static irqreturn_t lpass_dma_interrupt_handler(
struct snd_pcm_substream *substream,
struct lpass_data *drvdata,
@@ -674,6 +939,17 @@ static irqreturn_t lpass_dma_interrupt_handler(
reg = LPAIF_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST);
val = 0;
break;
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ map = drvdata->rxtx_lpaif_map;
+ reg = LPAIF_RXTX_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST);
+ val = 0;
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ map = drvdata->va_lpaif_map;
+ reg = LPAIF_VA_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST);
+ val = 0;
+ break;
default:
dev_err(soc_runtime->dev, "%s: invalid %d interface\n", __func__, dai_id);
return -EINVAL;
@@ -781,18 +1057,122 @@ static irqreturn_t lpass_platform_hdmiif_irq(int irq, void *data)
return rv;
}
}
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t lpass_platform_rxtxif_irq(int irq, void *data)
+{
+ struct lpass_data *drvdata = data;
+ struct lpass_variant *v = drvdata->variant;
+ unsigned int irqs;
+ int rv, chan;
+
+ rv = regmap_read(drvdata->rxtx_lpaif_map,
+ LPAIF_RXTX_IRQSTAT_REG(v, LPAIF_IRQ_PORT_HOST), &irqs);
+ if (rv)
+ return IRQ_NONE;
+ /* Handle per channel interrupts */
+ for (chan = 0; chan < LPASS_MAX_CDC_DMA_CHANNELS; chan++) {
+ if (irqs & LPAIF_IRQ_ALL(chan) && drvdata->rxtx_substream[chan]) {
+ rv = lpass_dma_interrupt_handler(
+ drvdata->rxtx_substream[chan],
+ drvdata, chan, irqs);
+ if (rv != IRQ_HANDLED)
+ return rv;
+ }
+ }

return IRQ_HANDLED;
}

+static irqreturn_t lpass_platform_vaif_irq(int irq, void *data)
+{
+ struct lpass_data *drvdata = data;
+ struct lpass_variant *v = drvdata->variant;
+ unsigned int irqs;
+ int rv, chan;
+
+ rv = regmap_read(drvdata->va_lpaif_map,
+ LPAIF_VA_IRQSTAT_REG(v, LPAIF_IRQ_PORT_HOST), &irqs);
+ if (rv)
+ return IRQ_NONE;
+ /* Handle per channel interrupts */
+ for (chan = 0; chan < LPASS_MAX_VA_CDC_DMA_CHANNELS; chan++) {
+ if (irqs & LPAIF_IRQ_ALL(chan) && drvdata->va_substream[chan]) {
+ rv = lpass_dma_interrupt_handler(
+ drvdata->va_substream[chan],
+ drvdata, chan, irqs);
+ if (rv != IRQ_HANDLED)
+ return rv;
+ }
+ }
+ return IRQ_HANDLED;
+}
+
+static int lpass_platform_prealloc_cdc_dma_buffer(struct snd_soc_component *component,
+ struct snd_pcm *pcm, int dai_id)
+{
+ struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
+ struct snd_pcm_substream *substream;
+ struct snd_dma_buffer *buf;
+ int ret;
+
+ if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream)
+ substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
+ else
+ substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
+
+ ret = dma_coerce_mask_and_coherent(pcm->card->dev, DMA_BIT_MASK(64));
+ if (ret)
+ return ret;
+
+ buf = &substream->dma_buffer;
+ buf->dev.dev = pcm->card->dev;
+ buf->private_data = NULL;
+
+ /* Assign Codec DMA buffer pointers */
+ buf->dev.type = SNDRV_DMA_TYPE_CONTINUOUS;
+
+ switch (dai_id) {
+ case LPASS_CDC_DMA_RX0 ... LPASS_CDC_DMA_RX9:
+ buf->bytes = lpass_platform_rxtx_hardware.buffer_bytes_max;
+ buf->addr = drvdata->rxtx_cdc_dma_lpm_buf;
+ break;
+ case LPASS_CDC_DMA_TX0 ... LPASS_CDC_DMA_TX8:
+ buf->bytes = lpass_platform_rxtx_hardware.buffer_bytes_max;
+ buf->addr = drvdata->rxtx_cdc_dma_lpm_buf + LPASS_RXTX_CDC_DMA_LPM_BUFF_SIZE;
+ break;
+ case LPASS_CDC_DMA_VA_TX0 ... LPASS_CDC_DMA_VA_TX8:
+ buf->bytes = lpass_platform_va_hardware.buffer_bytes_max;
+ buf->addr = drvdata->va_cdc_dma_lpm_buf;
+ break;
+ default:
+ break;
+ }
+
+ buf->area = (unsigned char * __force)ioremap(buf->addr, buf->bytes);
+
+ return 0;
+}
+
static int lpass_platform_pcm_new(struct snd_soc_component *component,
struct snd_soc_pcm_runtime *soc_runtime)
{
struct snd_pcm *pcm = soc_runtime->pcm;
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_runtime, 0);
+ unsigned int dai_id = cpu_dai->driver->id;
+
size_t size = lpass_platform_pcm_hardware.buffer_bytes_max;

- return snd_pcm_set_fixed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
- component->dev, size);
+ /*
+ * Lpass codec dma can access only lpass lpm hardware memory.
+ * ioremap is for HLOS to access hardware memory.
+ */
+ if (is_cdc_dma_port(dai_id))
+ return lpass_platform_prealloc_cdc_dma_buffer(component, pcm, dai_id);
+ else
+ return snd_pcm_set_fixed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
+ component->dev, size);
}

static int lpass_platform_pcmops_suspend(struct snd_soc_component *component)
@@ -827,6 +1207,31 @@ static int lpass_platform_pcmops_resume(struct snd_soc_component *component)
return regcache_sync(map);
}

+static int lpass_platform_copy(struct snd_soc_component *component,
+ struct snd_pcm_substream *substream, int channel,
+ unsigned long pos, void __user *buf, unsigned long bytes)
+{
+ struct snd_pcm_runtime *rt = substream->runtime;
+ unsigned int dai_id = component->id;
+ int ret = 0;
+
+ unsigned char *dma_buf = rt->dma_area + pos +
+ channel * (rt->dma_bytes / rt->channels);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ if (is_cdc_dma_port(dai_id))
+ ret = copy_from_user_toio((void __force *)dma_buf, buf, bytes);
+ else
+ ret = copy_from_user((void __force *)dma_buf, buf, bytes);
+ } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
+ if (is_cdc_dma_port(dai_id))
+ ret = copy_to_user_fromio(buf, dma_buf, bytes);
+ else
+ ret = copy_to_user(buf, dma_buf, bytes);
+ }
+
+ return ret;
+}

static const struct snd_soc_component_driver lpass_component_driver = {
.name = DRV_NAME,
@@ -837,9 +1242,11 @@ static const struct snd_soc_component_driver lpass_component_driver = {
.prepare = lpass_platform_pcmops_prepare,
.trigger = lpass_platform_pcmops_trigger,
.pointer = lpass_platform_pcmops_pointer,
+ .mmap = lpass_platform_pcmops_mmap,
.pcm_construct = lpass_platform_pcm_new,
.suspend = lpass_platform_pcmops_suspend,
.resume = lpass_platform_pcmops_resume,
+ .copy_user = lpass_platform_copy,

};

@@ -877,6 +1284,60 @@ int asoc_qcom_lpass_platform_register(struct platform_device *pdev)
return ret;
}

+ if (drvdata->codec_dma_enable) {
+ ret = regmap_write(drvdata->rxtx_lpaif_map,
+ LPAIF_RXTX_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST), 0x0);
+ if (ret) {
+ dev_err(&pdev->dev, "error writing to rxtx irqen reg: %d\n", ret);
+ return ret;
+ }
+ ret = regmap_write(drvdata->va_lpaif_map,
+ LPAIF_VA_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST), 0x0);
+ if (ret) {
+ dev_err(&pdev->dev, "error writing to rxtx irqen reg: %d\n", ret);
+ return ret;
+ }
+ drvdata->rxtxif_irq = platform_get_irq_byname(pdev, "lpass-irq-rxtxif");
+ if (drvdata->rxtxif_irq < 0)
+ return -ENODEV;
+
+ ret = devm_request_irq(&pdev->dev, drvdata->rxtxif_irq,
+ lpass_platform_rxtxif_irq, IRQF_TRIGGER_RISING,
+ "lpass-irq-rxtxif", drvdata);
+ if (ret) {
+ dev_err(&pdev->dev, "rxtx irq request failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = lpass_platform_alloc_rxtx_dmactl_fields(&pdev->dev,
+ drvdata->rxtx_lpaif_map);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "error initializing rxtx dmactl fields: %d\n", ret);
+ return ret;
+ }
+
+ drvdata->vaif_irq = platform_get_irq_byname(pdev, "lpass-irq-vaif");
+ if (drvdata->vaif_irq < 0)
+ return -ENODEV;
+
+ ret = devm_request_irq(&pdev->dev, drvdata->vaif_irq,
+ lpass_platform_vaif_irq, IRQF_TRIGGER_RISING,
+ "lpass-irq-vaif", drvdata);
+ if (ret) {
+ dev_err(&pdev->dev, "va irq request failed: %d\n", ret);
+ return ret;
+ }
+
+ ret = lpass_platform_alloc_va_dmactl_fields(&pdev->dev,
+ drvdata->va_lpaif_map);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "error initializing va dmactl fields: %d\n", ret);
+ return ret;
+ }
+ }
+
if (drvdata->hdmi_port_enable) {
drvdata->hdmiif_irq = platform_get_irq_byname(pdev, "lpass-irq-hdmi");
if (drvdata->hdmiif_irq < 0)
--
Qualcomm India Private Limited, on behalf of Qualcomm Innovation Center, Inc.,
is a member of Code Aurora Forum, a Linux Foundation Collaborative Project.
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