Re: [PATCH v2 5/9] ASoC: qcom: Add support for codec dma driver

From: Srinivas Kandagatla
Date: Thu Oct 07 2021 - 08:00:53 EST

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On 05/10/2021 14:52, Srinivasa Rao Mandadapu wrote:

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

Signed-off-by: Venkata Prasad Potturu <potturu@xxxxxxxxxxxxxx>
Signed-off-by: Srinivasa Rao Mandadapu <srivasam@xxxxxxxxxxxxxx>
---
sound/soc/qcom/lpass-cpu.c | 252 +++++++++++++++++++-
sound/soc/qcom/lpass-platform.c | 492 +++++++++++++++++++++++++++++++++++++---
2 files changed, 706 insertions(+), 38 deletions(-)

Firstly, am unable to apply this patch on top of sound-next for testing purposes.

I have 3 major comments in general

1> split the patch one for regmap and other for dma handling, its hard to review this long patch.

2> in general we should deal with range of dais supported for va, tx and rx macros, this patch seems to be just handling only 3 dai ids.

3> Also some details on why dma is handled differently in tx/rx, va dais when compared to other dais. Probably dt-bindings for that too.

diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index 3bd9eb3..6664d03 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -28,6 +28,8 @@
#define LPASS_CPU_I2S_SD2_3_MASK GENMASK(3, 2)
#define LPASS_CPU_I2S_SD0_1_2_MASK GENMASK(2, 0)
#define LPASS_CPU_I2S_SD0_1_2_3_MASK GENMASK(3, 0)
+#define LPASS_REG_READ 1
+#define LPASS_REG_WRITE 0
/*
* Channel maps for Quad channel playbacks on MI2S Secondary
@@ -798,6 +800,189 @@ static struct regmap_config lpass_hdmi_regmap_config = {
.cache_type = REGCACHE_FLAT,
};
+static bool __lpass_rxtx_regmap_accessible(struct device *dev, unsigned int reg, bool rw)
+{
+ struct lpass_data *drvdata = dev_get_drvdata(dev);
+ struct lpass_variant *v = drvdata->variant;
+ int i;
+
+ for (i = 0; i < v->rxtx_irq_ports; ++i) {
+ if (reg == LPAIF_RXTX_IRQCLEAR_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ if (reg == LPAIF_RXTX_IRQEN_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ if (reg == LPAIF_RXTX_IRQSTAT_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ }
+
+ for (i = 0; i < v->rxtx_rdma_channels; ++i) {
+ if (reg == LPAIF_CDC_RDMACTL_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ if (reg == LPAIF_CDC_RDMABASE_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ if (reg == LPAIF_CDC_RDMABUFF_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ if (rw == LPASS_REG_READ) {
+ if (reg == LPAIF_CDC_RDMACURR_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ }
+ if (reg == LPAIF_CDC_RDMAPER_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ if (reg == LPAIF_CDC_RDMA_INTF_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ }
+
+ for (i = 0; i < v->rxtx_wrdma_channels; ++i) {
+ if (reg == LPAIF_CDC_WRDMACTL_REG(v, i + v->rxtx_wrdma_channel_start,
+ LPASS_CDC_DMA_TX3))
+ return true;
+ if (reg == LPAIF_CDC_WRDMABASE_REG(v, i + v->rxtx_wrdma_channel_start,
+ LPASS_CDC_DMA_TX3))
+ return true;
+ if (reg == LPAIF_CDC_WRDMABUFF_REG(v, i + v->rxtx_wrdma_channel_start,
+ LPASS_CDC_DMA_TX3))
+ return true;
+ if (rw == LPASS_REG_READ) {
+ if (reg == LPAIF_CDC_WRDMACURR_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ }
+ if (reg == LPAIF_CDC_WRDMAPER_REG(v, i + v->rxtx_wrdma_channel_start,
+ LPASS_CDC_DMA_TX3))
+ return true;
+ if (reg == LPAIF_CDC_WRDMA_INTF_REG(v, i + v->rxtx_wrdma_channel_start,
+ LPASS_CDC_DMA_TX3))
+ return true;
+ }
+ return false;
+}
+
+static bool lpass_rxtx_regmap_writeable(struct device *dev, unsigned int reg)
+{
+ return __lpass_rxtx_regmap_accessible(dev, reg, LPASS_REG_WRITE);
+}
+
+static bool lpass_rxtx_regmap_readable(struct device *dev, unsigned int reg)
+{
+ return __lpass_rxtx_regmap_accessible(dev, reg, LPASS_REG_READ);
+}
+
+static bool lpass_rxtx_regmap_volatile(struct device *dev, unsigned int reg)
+{
+ struct lpass_data *drvdata = dev_get_drvdata(dev);
+ struct lpass_variant *v = drvdata->variant;
+ int i;
+
+ for (i = 0; i < v->rxtx_irq_ports; ++i) {
+ if (reg == LPAIF_RXTX_IRQCLEAR_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ if (reg == LPAIF_RXTX_IRQSTAT_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+ }
+
+ for (i = 0; i < v->rxtx_rdma_channels; ++i)
+ if (reg == LPAIF_CDC_RDMACURR_REG(v, i, LPASS_CDC_DMA_RX0))
+ return true;
+
+ for (i = 0; i < v->rxtx_wrdma_channels; ++i)
+ if (reg == LPAIF_CDC_WRDMACURR_REG(v, i + v->rxtx_wrdma_channel_start,
+ LPASS_CDC_DMA_TX3))
+ return true;
+
+ return false;
+}
+
+static bool __lpass_va_regmap_accessible(struct device *dev, unsigned int reg, bool rw)
+{
+ struct lpass_data *drvdata = dev_get_drvdata(dev);
+ struct lpass_variant *v = drvdata->variant;
+ int i;
+
+ for (i = 0; i < v->va_irq_ports; ++i) {
+ if (reg == LPAIF_RXTX_IRQCLEAR_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+ return true;
+ if (reg == LPAIF_RXTX_IRQEN_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+ return true;
+ if (reg == LPAIF_RXTX_IRQSTAT_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+ return true;
+ }
+
+ for (i = 0; i < v->va_wrdma_channels; ++i) {
+ if (reg == LPAIF_CDC_WRDMACTL_REG(v, i + v->va_wrdma_channel_start,
+ LPASS_CDC_DMA_VA_TX0))
+ return true;
+ if (reg == LPAIF_CDC_WRDMABASE_REG(v, i + v->va_wrdma_channel_start,
+ LPASS_CDC_DMA_VA_TX0))
+ return true;
+ if (reg == LPAIF_CDC_WRDMABUFF_REG(v, i + v->va_wrdma_channel_start,
+ LPASS_CDC_DMA_VA_TX0))
+ return true;
+ if (rw == LPASS_REG_READ) {
+ if (reg == LPAIF_CDC_WRDMACURR_REG(v, i + v->va_wrdma_channel_start,
+ LPASS_CDC_DMA_VA_TX0))
+ return true;
+ }
+ if (reg == LPAIF_CDC_WRDMAPER_REG(v, i + v->va_wrdma_channel_start,
+ LPASS_CDC_DMA_VA_TX0))
+ return true;
+ if (reg == LPAIF_CDC_WRDMA_INTF_REG(v, i + v->va_wrdma_channel_start,
+ LPASS_CDC_DMA_VA_TX0))
+ return true;
+ }
+ return false;
+}
+
+static bool lpass_va_regmap_writeable(struct device *dev, unsigned int reg)
+{
+ return __lpass_va_regmap_accessible(dev, reg, LPASS_REG_WRITE);
+}
+
+static bool lpass_va_regmap_readable(struct device *dev, unsigned int reg)
+{
+ return __lpass_va_regmap_accessible(dev, reg, LPASS_REG_READ);
+}
+
+static bool lpass_va_regmap_volatile(struct device *dev, unsigned int reg)
+{
+ struct lpass_data *drvdata = dev_get_drvdata(dev);
+ struct lpass_variant *v = drvdata->variant;
+ int i;
+
+ for (i = 0; i < v->va_irq_ports; ++i) {
+ if (reg == LPAIF_RXTX_IRQCLEAR_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+ return true;
+ if (reg == LPAIF_RXTX_IRQSTAT_REG(v, i, LPASS_CDC_DMA_VA_TX0))
+ return true;
+ }
+
+ for (i = 0; i < v->va_wrdma_channels; ++i) {
+ if (reg == LPAIF_CDC_WRDMACURR_REG(v, i + v->va_wrdma_channel_start,
+ LPASS_CDC_DMA_VA_TX0))
+ return true;
+ }
+
+ return false;
+}
+
+static struct regmap_config lpass_rxtx_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .writeable_reg = lpass_rxtx_regmap_writeable,
+ .readable_reg = lpass_rxtx_regmap_readable,
+ .volatile_reg = lpass_rxtx_regmap_volatile,
+ .cache_type = REGCACHE_FLAT,
+};
+
+static struct regmap_config lpass_va_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .writeable_reg = lpass_va_regmap_writeable,
+ .readable_reg = lpass_va_regmap_readable,
+ .volatile_reg = lpass_va_regmap_volatile,
+ .cache_type = REGCACHE_FLAT,
+};
+
static unsigned int of_lpass_cpu_parse_sd_lines(struct device *dev,
struct device_node *node,
const char *name)
@@ -837,6 +1022,17 @@ static unsigned int of_lpass_cpu_parse_sd_lines(struct device *dev,
}
}
+static bool is_cdc_dma_port(int dai_id)
+{
+ switch (dai_id) {
+ case LPASS_CDC_DMA_RX0:
+ case LPASS_CDC_DMA_TX3:
+ case LPASS_CDC_DMA_VA_TX0:

What happens to the other VA/TX/RX dai ids?

You should probably add them here.

+ return true;
+ default:
+ return false;
+ }
+}
static void of_lpass_cpu_parse_dai_data(struct device *dev,
struct lpass_data *data)
{
@@ -857,7 +1053,9 @@ 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->wcd_codec_enable = 1;

naming of wcd is bit misleading, as VA has nothing to do with WCD. May be a better naming here would help.

+ else {
data->mi2s_playback_sd_mode[id] =
of_lpass_cpu_parse_sd_lines(dev, node,
"qcom,playback-sd-lines");

On the other hand may be you can convert this to a swith case and include other dai-ids here, instead of adding is_cdc_dma_port().

@@ -897,6 +1095,53 @@ 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->wcd_codec_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_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_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;
+ }
+ }
+
drvdata->lpaif = devm_platform_ioremap_resource_byname(pdev, "lpass-lpaif");
if (IS_ERR(drvdata->lpaif))
return PTR_ERR(drvdata->lpaif);
@@ -939,7 +1184,10 @@ 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 ||
+ dai_id == LPASS_CDC_DMA_RX0 ||
+ dai_id == LPASS_CDC_DMA_TX3 ||
+ dai_id == LPASS_CDC_DMA_VA_TX0)

same here, we should deal with other dai ids too.

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 a000041..75dff5e 100644
--- a/sound/soc/qcom/lpass-platform.c
+++ b/sound/soc/qcom/lpass-platform.c
@@ -20,6 +20,10 @@
#define LPASS_PLATFORM_BUFFER_SIZE (24 * 2 * 1024)
#define LPASS_PLATFORM_PERIODS 2
+#define LPSAS_RXTX_CDC_DMA_LPM_ADDR 0x3260000

What is this? This should come from DT.

+#define LPSAS_RXTX_CDC_DMA_LPM_BUFF_SIZE (24 * 1024)
+#define LPSAS_VA_CDC_DMA_LPM_ADDR 0x336C000

+#define LPSAS_VA_CDC_DMA_LPM_BUFF_SIZE (12 * 1024)
static const struct snd_pcm_hardware lpass_platform_pcm_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
@@ -45,6 +49,103 @@ 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 = LPSAS_RXTX_CDC_DMA_LPM_BUFF_SIZE,
+ .period_bytes_max = LPSAS_RXTX_CDC_DMA_LPM_BUFF_SIZE /
+ LPASS_PLATFORM_PERIODS,
+ .period_bytes_min = LPSAS_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 = LPSAS_VA_CDC_DMA_LPM_BUFF_SIZE,
+ .period_bytes_max = LPSAS_VA_CDC_DMA_LPM_BUFF_SIZE /
+ LPASS_PLATFORM_PERIODS,
+ .period_bytes_min = LPSAS_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;
+
+ drvdata->rxtx_rd_dmactl = devm_kzalloc(dev, sizeof(struct lpaif_dmactl),
+ GFP_KERNEL);
+ if (drvdata->rxtx_rd_dmactl == NULL)
+ return -ENOMEM;
+
+ drvdata->rxtx_wr_dmactl = devm_kzalloc(dev, sizeof(struct lpaif_dmactl),
+ GFP_KERNEL);
+ if (drvdata->rxtx_wr_dmactl == NULL)
+ return -ENOMEM;
+
+ rd_dmactl = drvdata->rxtx_rd_dmactl;
+ wr_dmactl = drvdata->rxtx_wr_dmactl;
+
+ rval = devm_regmap_field_bulk_alloc(dev, map, &rd_dmactl->intf,
+ &v->rxtx_rdma_intf, 15);
+ if (rval)
+ return rval;
+
+ return devm_regmap_field_bulk_alloc(dev, map, &wr_dmactl->intf,
+ &v->rxtx_wrdma_intf, 15);
+}
+
+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;
+
+ drvdata->va_wr_dmactl = devm_kzalloc(dev, sizeof(struct lpaif_dmactl),
+ GFP_KERNEL);
+ if (drvdata->va_wr_dmactl == NULL)
+ return -ENOMEM;
+
+ wr_dmactl = drvdata->va_wr_dmactl;
+
+ return devm_regmap_field_bulk_alloc(dev, map, &wr_dmactl->intf,
+ &v->va_wrdma_intf, 15);
+}
+
+
static int lpass_platform_alloc_dmactl_fields(struct device *dev,
struct regmap *map)
{
@@ -126,24 +227,44 @@ static int lpass_platform_pcmops_open(struct snd_soc_component *component,
if (cpu_dai->driver->id == LPASS_DP_RX) {
map = drvdata->hdmiif_map;
drvdata->hdmi_substream[dma_ch] = substream;
+ } else if (dai_id == LPASS_CDC_DMA_RX0 || dai_id == LPASS_CDC_DMA_TX3) {
+ map = drvdata->rxtx_lpaif_map;
+ drvdata->rxtx_substream[dma_ch] = substream;
+ } else if (dai_id == LPASS_CDC_DMA_VA_TX0) {
+ map = drvdata->va_lpaif_map;
+ drvdata->va_substream[dma_ch] = substream;
} else {
map = drvdata->lpaif_map;
drvdata->substream[dma_ch] = substream;
}
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;
+ if (!(dai_id == LPASS_CDC_DMA_RX0 ||
+ dai_id == LPASS_CDC_DMA_TX3 ||
+ dai_id == LPASS_CDC_DMA_VA_TX0)) {
+ 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;
+ }
}
- 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);
+ switch (dai_id) {
+ case LPASS_CDC_DMA_RX0:
+ case LPASS_CDC_DMA_TX3:
+ snd_soc_set_runtime_hwparams(substream, &lpass_platform_rxtx_hardware);
+ runtime->dma_bytes = lpass_platform_rxtx_hardware.buffer_bytes_max;
+ break;
+ case LPASS_CDC_DMA_VA_TX0:
+ snd_soc_set_runtime_hwparams(substream, &lpass_platform_va_hardware);
+ runtime->dma_bytes = lpass_platform_va_hardware.buffer_bytes_max;
+ break;
+ default:
+ snd_soc_set_runtime_hwparams(substream, &lpass_platform_pcm_hardware);
+ runtime->dma_bytes = lpass_platform_pcm_hardware.buffer_bytes_max;
+ break;
+ }
+ ret = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS);
if (ret < 0) {
kfree(data);
dev_err(soc_runtime->dev, "setting constraints failed: %d\n",
@@ -170,6 +291,10 @@ static int lpass_platform_pcmops_close(struct snd_soc_component *component,
data = runtime->private_data;
if (dai_id == LPASS_DP_RX)
drvdata->hdmi_substream[data->dma_ch] = NULL;
+ else if (dai_id == LPASS_CDC_DMA_RX0 || dai_id == LPASS_CDC_DMA_TX3)

simillar comment about dai ids here.

+ drvdata->rxtx_substream[data->dma_ch] = NULL;
+ else if (dai_id == LPASS_CDC_DMA_VA_TX0)
+ drvdata->va_substream[data->dma_ch] = NULL;
else
drvdata->substream[data->dma_ch] = NULL;
if (v->free_dma_channel)
@@ -202,12 +327,22 @@ static int lpass_platform_pcmops_hw_params(struct snd_soc_component *component,
id = pcm_data->dma_ch;
if (dai_id == LPASS_DP_RX)
dmactl = drvdata->hdmi_rd_dmactl;
+ else if (dai_id == LPASS_CDC_DMA_RX0)
+ dmactl = drvdata->rxtx_rd_dmactl;
else
dmactl = drvdata->rd_dmactl;
} else {
- dmactl = drvdata->wr_dmactl;
- id = pcm_data->dma_ch - v->wrdma_channel_start;
+ if (dai_id == LPASS_CDC_DMA_TX3) {
+ dmactl = drvdata->rxtx_wr_dmactl;
+ id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;
+ } else if (dai_id == LPASS_CDC_DMA_VA_TX0) {
+ dmactl = drvdata->va_wr_dmactl;
+ id = pcm_data->dma_ch - v->va_wrdma_channel_start;
+ } else {
+ dmactl = drvdata->wr_dmactl;
+ id = pcm_data->dma_ch - v->wrdma_channel_start;
+ }
}
bitwidth = snd_pcm_format_width(format);
@@ -230,6 +365,10 @@ static int lpass_platform_pcmops_hw_params(struct snd_soc_component *component,
}
switch (dai_id) {
+ case LPASS_CDC_DMA_RX0:
+ case LPASS_CDC_DMA_TX3:
+ case LPASS_CDC_DMA_VA_TX0:
+ break;
case LPASS_DP_RX:
ret = regmap_fields_write(dmactl->burst8, id,
LPAIF_DMACTL_BURSTEN_INCR4);
@@ -354,9 +493,12 @@ static int lpass_platform_pcmops_hw_free(struct snd_soc_component *component,
if (dai_id == LPASS_DP_RX)
map = drvdata->hdmiif_map;
+ else if (dai_id == LPASS_CDC_DMA_RX0 ||
+ dai_id == LPASS_CDC_DMA_TX3 ||
+ dai_id == LPASS_CDC_DMA_VA_TX0)
+ return 0;
else
map = drvdata->lpaif_map;
-
reg = LPAIF_DMACTL_REG(v, pcm_data->dma_ch, substream->stream, dai_id);
ret = regmap_write(map, reg, 0);
if (ret)
@@ -387,6 +529,9 @@ static int lpass_platform_pcmops_prepare(struct snd_soc_component *component,
if (dai_id == LPASS_DP_RX) {
dmactl = drvdata->hdmi_rd_dmactl;
map = drvdata->hdmiif_map;
+ } else if (dai_id == LPASS_CDC_DMA_RX0) {
+ map = drvdata->rxtx_lpaif_map;
+ dmactl = drvdata->rxtx_rd_dmactl;
} else {
dmactl = drvdata->rd_dmactl;
map = drvdata->lpaif_map;
@@ -394,9 +539,19 @@ static int lpass_platform_pcmops_prepare(struct snd_soc_component *component,
id = pcm_data->dma_ch;
} else {
- dmactl = drvdata->wr_dmactl;
- id = pcm_data->dma_ch - v->wrdma_channel_start;
- map = drvdata->lpaif_map;
+ if (dai_id == LPASS_CDC_DMA_TX3) {
+ dmactl = drvdata->rxtx_wr_dmactl;
+ map = drvdata->rxtx_lpaif_map;
+ id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;
+ } else if (dai_id == LPASS_CDC_DMA_VA_TX0) {
+ dmactl = drvdata->va_wr_dmactl;
+ map = drvdata->va_lpaif_map;
+ id = pcm_data->dma_ch - v->va_wrdma_channel_start;
+ } else {
+ dmactl = drvdata->wr_dmactl;
+ id = pcm_data->dma_ch - v->wrdma_channel_start;
+ map = drvdata->lpaif_map;
+ }
}
ret = regmap_write(map, LPAIF_DMABASE_REG(v, ch, dir, dai_id),
@@ -423,6 +578,16 @@ static int lpass_platform_pcmops_prepare(struct snd_soc_component *component,
return ret;
}
+ if (dai_id == LPASS_CDC_DMA_RX0 ||
+ dai_id == LPASS_CDC_DMA_TX3 ||
+ dai_id == LPASS_CDC_DMA_VA_TX0) {
+ 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",
@@ -457,14 +622,27 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component,
if (dai_id == LPASS_DP_RX) {
dmactl = drvdata->hdmi_rd_dmactl;
map = drvdata->hdmiif_map;
+ } else if (dai_id == LPASS_CDC_DMA_RX0) {
+ map = drvdata->rxtx_lpaif_map;
+ dmactl = drvdata->rxtx_rd_dmactl;
} else {
dmactl = drvdata->rd_dmactl;
map = drvdata->lpaif_map;
}
} else {
- dmactl = drvdata->wr_dmactl;
- id = pcm_data->dma_ch - v->wrdma_channel_start;
- map = drvdata->lpaif_map;
+ if (dai_id == LPASS_CDC_DMA_TX3) {
+ dmactl = drvdata->rxtx_wr_dmactl;
+ map = drvdata->rxtx_lpaif_map;
+ id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;
+ } else if (dai_id == LPASS_CDC_DMA_VA_TX0) {
+ dmactl = drvdata->va_wr_dmactl;
+ map = drvdata->va_lpaif_map;
+ id = pcm_data->dma_ch - v->va_wrdma_channel_start;
+ } else {
+ dmactl = drvdata->wr_dmactl;
+ id = pcm_data->dma_ch - v->wrdma_channel_start;
+ map = drvdata->lpaif_map;
+ }
}
switch (cmd) {
@@ -479,6 +657,22 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component,
return ret;
}
switch (dai_id) {
+ case LPASS_CDC_DMA_RX0:
+ case LPASS_CDC_DMA_TX3:
+ case LPASS_CDC_DMA_VA_TX0:
+ 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, dai_id);
+ val_irqclr = LPAIF_IRQ_ALL(ch);
+
+ reg_irqen = LPAIF_RXTX_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST, dai_id);
+ val_mask = LPAIF_IRQ_ALL(ch);
+ val_irqen = LPAIF_IRQ_ALL(ch);
+ break;
case LPASS_DP_RX:
ret = regmap_fields_write(dmactl->dyncclk, id,
LPAIF_DMACTL_DYNCLK_ON);
@@ -543,6 +737,24 @@ static int lpass_platform_pcmops_trigger(struct snd_soc_component *component,
return ret;
}
switch (dai_id) {
+ case LPASS_CDC_DMA_RX0:
+ case LPASS_CDC_DMA_TX3:
+ case LPASS_CDC_DMA_VA_TX0:
+ 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, dai_id);
+ val_irqclr = LPAIF_IRQ_ALL(ch);
+
+ reg_irqen = LPAIF_RXTX_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST, dai_id);
+ val_mask = LPAIF_IRQ_ALL(ch);
+ val_irqen = LPAIF_IRQ_ALL(ch);
+
+ break;
case LPASS_DP_RX:
ret = regmap_fields_write(dmactl->dyncclk, id,
LPAIF_DMACTL_DYNCLK_OFF);
@@ -601,6 +813,12 @@ static snd_pcm_uframes_t lpass_platform_pcmops_pointer(
if (dai_id == LPASS_DP_RX)
map = drvdata->hdmiif_map;
+ else if (dai_id == LPASS_CDC_DMA_RX0 ||
+ dai_id == LPASS_CDC_DMA_TX3 ||
+ dai_id == LPASS_CDC_DMA_VA_TX0)
+ map = (dai_id == LPASS_CDC_DMA_VA_TX0) ?
+ drvdata->va_lpaif_map :
+ drvdata->rxtx_lpaif_map;
else
map = drvdata->lpaif_map;
@@ -625,12 +843,37 @@ 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_pcm_runtime *runtime = substream->runtime;
+ 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;
+ if (dai_id == LPASS_CDC_DMA_RX0 ||
+ dai_id == LPASS_CDC_DMA_TX3 ||
+ dai_id == LPASS_CDC_DMA_VA_TX0) {
+ lpass_platform_cdc_dma_mmap(component, substream, vma);
+ return 0;
+ }
return dma_mmap_coherent(component->dev, vma, runtime->dma_area,
runtime->dma_addr, runtime->dma_bytes);
}
@@ -651,6 +894,14 @@ static irqreturn_t lpass_dma_interrupt_handler(
mask = LPAIF_IRQ_ALL(chan);
switch (dai_id) {
+ case LPASS_CDC_DMA_RX0:
+ case LPASS_CDC_DMA_TX3:
+ case LPASS_CDC_DMA_VA_TX0:
+ map = (dai_id == LPASS_CDC_DMA_VA_TX0) ?
+ drvdata->va_lpaif_map : drvdata->rxtx_lpaif_map;
+ reg = LPAIF_RXTX_IRQCLEAR_REG(v, LPAIF_IRQ_PORT_HOST, dai_id);
+ val = 0;
+ break;
case LPASS_DP_RX:
map = drvdata->hdmiif_map;
reg = LPASS_HDMITX_APP_IRQCLEAR_REG(v);
@@ -774,41 +1025,131 @@ 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, LPASS_CDC_DMA_RX0), &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_RXTX_IRQSTAT_REG(v, LPAIF_IRQ_PORT_HOST,
+ LPASS_CDC_DMA_VA_TX0), &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_pcm *pcm,
+ struct snd_pcm_substream *substream, int dai_id)
+{
+ struct snd_dma_buffer *buf = &substream->dma_buffer;
+ int ret;
+
+ ret = dma_coerce_mask_and_coherent(pcm->card->dev, DMA_BIT_MASK(64));
+ if (ret)
+ return ret;
+
+ buf->dev.dev = pcm->card->dev;
+ buf->private_data = NULL;
+
+ /* Assign Codec DMA buffer pointers */
+ buf->dev.type = SNDRV_DMA_TYPE_CONTINUOUS;
+ if (dai_id == LPASS_CDC_DMA_RX0) {
+ buf->bytes = lpass_platform_rxtx_hardware.buffer_bytes_max;
+ buf->addr = LPSAS_RXTX_CDC_DMA_LPM_ADDR;

This is totally broken, and will not work on any other platform other than the one you tested on.

+ } else if (dai_id == LPASS_CDC_DMA_TX3) {
+ buf->bytes = lpass_platform_rxtx_hardware.buffer_bytes_max;
+ buf->addr = LPSAS_RXTX_CDC_DMA_LPM_ADDR + LPSAS_RXTX_CDC_DMA_LPM_BUFF_SIZE;
+ } else if (dai_id == LPASS_CDC_DMA_VA_TX0) {
+ buf->bytes = lpass_platform_va_hardware.buffer_bytes_max;
+ buf->addr = LPSAS_VA_CDC_DMA_LPM_ADDR;
+ }
+
+ 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_pcm_substream *psubstream, *csubstream;
int ret;
+ struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_runtime, 0);
+ unsigned int dai_id = cpu_dai->driver->id;
+

This code does not exist in upstream version, please refer to latest code.

size_t size = lpass_platform_pcm_hardware.buffer_bytes_max;
psubstream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
if (psubstream) {
- ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
- component->dev,
- size, &psubstream->dma_buffer);
- if (ret) {
- dev_err(soc_runtime->dev, "Cannot allocate buffer(s)\n");
- return ret;
+ if (dai_id == LPASS_CDC_DMA_RX0) {
+ lpass_platform_prealloc_cdc_dma_buffer(pcm, psubstream, dai_id);
+ } else {
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
+ component->dev,
+ size, &psubstream->dma_buffer);
+ if (ret) {
+ dev_err(soc_runtime->dev, "Cannot allocate buffer(s)\n");
+ return ret;
+ }
}
}
csubstream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
if (csubstream) {
- ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
- component->dev,
- size, &csubstream->dma_buffer);
- if (ret) {
- dev_err(soc_runtime->dev, "Cannot allocate buffer(s)\n");
- if (psubstream)
- snd_dma_free_pages(&psubstream->dma_buffer);
- return ret;
+ if (dai_id == LPASS_CDC_DMA_TX3 || dai_id == LPASS_CDC_DMA_VA_TX0) {
+ lpass_platform_prealloc_cdc_dma_buffer(pcm, csubstream, dai_id);
+ } else {
+ ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
+ component->dev,
+ size, &csubstream->dma_buffer);
+ if (ret) {
+ dev_err(soc_runtime->dev, "Cannot allocate buffer(s)\n");
+ if (psubstream)
+ snd_dma_free_pages(&psubstream->dma_buffer);
+ return ret;
+ }
}
-
}
return 0;
@@ -818,18 +1159,42 @@ static void lpass_platform_pcm_free(struct snd_soc_component *component,
struct snd_pcm *pcm)
{
struct snd_pcm_substream *substream;
+ unsigned int dai_id = component->id;
int i;
for_each_pcm_streams(i) {
substream = pcm->streams[i].substream;
if (substream) {
- snd_dma_free_pages(&substream->dma_buffer);
+ if (dai_id == LPASS_CDC_DMA_RX0 ||
+ dai_id == LPASS_CDC_DMA_TX3 ||
+ dai_id == LPASS_CDC_DMA_VA_TX0) {
+ if (substream->dma_buffer.area)
+ iounmap((void __iomem *)substream->dma_buffer.area);
+ } else {
+ snd_dma_free_pages(&substream->dma_buffer);
+ }
substream->dma_buffer.area = NULL;
substream->dma_buffer.addr = 0;
}
}
}
+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 char *dma_buf = rt->dma_area + pos +
+ channel * (rt->dma_bytes / rt->channels);
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ return copy_from_user_toio(dma_buf, buf, bytes);
+ else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
+ return copy_to_user_fromio(buf, dma_buf, bytes);
+
+ return -EINVAL;
+}
+
static int lpass_platform_pcmops_suspend(struct snd_soc_component *component)
{
struct lpass_data *drvdata = snd_soc_component_get_drvdata(component);
@@ -875,6 +1240,7 @@ static const struct snd_soc_component_driver lpass_component_driver = {
.mmap = lpass_platform_pcmops_mmap,
.pcm_construct = lpass_platform_pcm_new,
.pcm_destruct = lpass_platform_pcm_free,
+ .copy_user = lpass_platform_copy,

Have you tested other dais like I2S with this patch?

.suspend = lpass_platform_pcmops_suspend,
.resume = lpass_platform_pcmops_resume,
@@ -914,6 +1280,60 @@ int asoc_qcom_lpass_platform_register(struct platform_device *pdev)
return ret;
}
+ if (drvdata->wcd_codec_enable) {
+ ret = regmap_write(drvdata->rxtx_lpaif_map,
+ LPAIF_RXTX_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST, LPASS_CDC_DMA_TX3), 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_RXTX_IRQEN_REG(v, LPAIF_IRQ_PORT_HOST, LPASS_CDC_DMA_VA_TX0), 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)

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