Re: [PATCH v5 06/10] ASoC: qcom: Add support for codec dma driver
From: Srinivasa Rao Mandadapu
Date: Fri Nov 26 2021 - 06:22:58 EST
On 11/23/2021 5:58 PM, Srinivas Kandagatla wrote:
Thanks for valuable time Srini!!!
On 22/11/2021 11:46, Srinivasa Rao Mandadapu wrote:
Upadate lpass cpu and platform driver to support audio over codec dma
in ADSP bypass use case.
Signed-off-by: Srinivasa Rao Mandadapu <srivasam@xxxxxxxxxxxxxx>
Co-developed-by: Venkata Prasad Potturu <potturu@xxxxxxxxxxxxxx>
Signed-off-by: Venkata Prasad Potturu <potturu@xxxxxxxxxxxxxx>
---
sound/soc/qcom/common.c | 39 ++++
sound/soc/qcom/common.h | 1 +
common.c is mostly intended to be used by machine drivers, so I would
suggest that you move it to lpass.h and make is_cdc_dma_port a static
inlnie function.
Okay. will move to lpass.h
sound/soc/qcom/lpass-cpu.c | 60 +++++-
sound/soc/qcom/lpass-platform.c | 424
++++++++++++++++++++++++++++++++++++++--
4 files changed, 508 insertions(+), 16 deletions(-)
diff --git a/sound/soc/qcom/common.c b/sound/soc/qcom/common.c
index 09af007..26d3752 100644
--- a/sound/soc/qcom/common.c
+++ b/sound/soc/qcom/common.c
@@ -4,6 +4,7 @@
#include <linux/module.h>
#include "common.h"
+#include "lpass.h"
int qcom_snd_parse_of(struct snd_soc_card *card)
{
@@ -169,4 +170,42 @@ int qcom_snd_parse_of(struct snd_soc_card *card)
}
EXPORT_SYMBOL(qcom_snd_parse_of);
+bool is_cdc_dma_port(int dai_id)
+{
+ switch (dai_id) {
+ case LPASS_CDC_DMA_RX0:
+ case LPASS_CDC_DMA_RX1:
+ case LPASS_CDC_DMA_RX2:
+ case LPASS_CDC_DMA_RX3:
+ case LPASS_CDC_DMA_RX4:
+ case LPASS_CDC_DMA_RX5:
+ case LPASS_CDC_DMA_RX6:
+ case LPASS_CDC_DMA_RX7:
+ case LPASS_CDC_DMA_RX8:
+ case LPASS_CDC_DMA_RX9:
+ case LPASS_CDC_DMA_TX0:
+ case LPASS_CDC_DMA_TX1:
+ case LPASS_CDC_DMA_TX2:
+ case LPASS_CDC_DMA_TX3:
+ case LPASS_CDC_DMA_TX4:
+ case LPASS_CDC_DMA_TX5:
+ case LPASS_CDC_DMA_TX6:
+ case LPASS_CDC_DMA_TX7:
+ case LPASS_CDC_DMA_TX8:
+ case LPASS_CDC_DMA_VA_TX0:
+ case LPASS_CDC_DMA_VA_TX1:
+ case LPASS_CDC_DMA_VA_TX2:
+ case LPASS_CDC_DMA_VA_TX3:
+ case LPASS_CDC_DMA_VA_TX4:
+ case LPASS_CDC_DMA_VA_TX5:
+ case LPASS_CDC_DMA_VA_TX6:
+ case LPASS_CDC_DMA_VA_TX7:
+ case LPASS_CDC_DMA_VA_TX8:
+ return true;
+ default:
+ return false;
+ }
+}
+EXPORT_SYMBOL(is_cdc_dma_port);
+
MODULE_LICENSE("GPL v2");
diff --git a/sound/soc/qcom/common.h b/sound/soc/qcom/common.h
index f05c05b..a8fea4c 100644
--- a/sound/soc/qcom/common.h
+++ b/sound/soc/qcom/common.h
@@ -7,5 +7,6 @@
#include <sound/soc.h>
int qcom_snd_parse_of(struct snd_soc_card *card);
+bool is_cdc_dma_port(int dai_id);
#endif
diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index 3bd9eb3..9e6656c 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -17,6 +17,7 @@
#include <sound/soc.h>
#include <sound/soc-dai.h>
#include "lpass-lpaif-reg.h"
+#include "common.h"
#include "lpass.h"
#define LPASS_CPU_MAX_MI2S_LINES 4
@@ -857,7 +858,9 @@ 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");
@@ -872,6 +875,7 @@ 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;
@@ -897,6 +901,58 @@ 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_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));
there is a 100 chars limit now, so you can wrap this to a single line.
Okay. it's crossing 102 lines.
+ 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;
double space after =
okay.
+
+ 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);
@@ -939,7 +995,7 @@ 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 59c0884..4b79908 100644
--- a/sound/soc/qcom/lpass-platform.c
+++ b/sound/soc/qcom/lpass-platform.c
@@ -14,12 +14,15 @@
#include <linux/regmap.h>
#include <sound/soc.h>
#include "lpass-lpaif-reg.h"
+#include "common.h"
#include "lpass.h"
#define DRV_NAME "lpass-platform"
#define LPASS_PLATFORM_BUFFER_SIZE (24 * 2 * 1024)
#define LPASS_PLATFORM_PERIODS 2
+#define LPSAS_RXTX_CDC_DMA_LPM_BUFF_SIZE (24 * 1024)
+#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 +48,103 @@ 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;
may be rewrite this to:
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;
Okay.
+
+ rval = devm_regmap_field_bulk_alloc(dev, map, &rd_dmactl->intf,
+ &v->rxtx_rdma_intf, 15);
can we define this magic number 15 properly?
Okay.
+ 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;
simillar comment.
Okay.
+
+ 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)
{
@@ -126,22 +226,43 @@ 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;
+ 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) {
@@ -168,6 +289,10 @@ 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)
+ 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)
@@ -198,14 +323,27 @@ static void __get_lpaif_handle(struct
snd_pcm_substream *substream,
if (dai_id == LPASS_DP_RX) {
l_dmactl = drvdata->hdmi_rd_dmactl;
l_map = drvdata->hdmiif_map;
+ } else if (dai_id == LPASS_CDC_DMA_RX0) {
+ l_map = drvdata->rxtx_lpaif_map;
+ l_dmactl = drvdata->rxtx_rd_dmactl;
} else {
l_dmactl = drvdata->rd_dmactl;
l_map = drvdata->lpaif_map;
}
} else {
- l_dmactl = drvdata->wr_dmactl;
- l_id = pcm_data->dma_ch - v->wrdma_channel_start;
- l_map = drvdata->lpaif_map;
+ if (dai_id == LPASS_CDC_DMA_TX3) {
+ l_dmactl = drvdata->rxtx_wr_dmactl;
+ l_map = drvdata->rxtx_lpaif_map;
+ l_id = pcm_data->dma_ch - v->rxtx_wrdma_channel_start;
+ } else if (dai_id == LPASS_CDC_DMA_VA_TX0) {
+ l_dmactl = drvdata->va_wr_dmactl;
+ l_map = drvdata->va_lpaif_map;
+ l_id = pcm_data->dma_ch - v->va_wrdma_channel_start;
+ } else {
+ l_dmactl = drvdata->wr_dmactl;
+ l_id = pcm_data->dma_ch - v->wrdma_channel_start;
+ l_map = drvdata->lpaif_map;
+ }
}
if (dmactl)
*dmactl = l_dmactl;
@@ -256,6 +394,10 @@ 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:
Is there a reason why we can not add support to other CDC_DMA dais as
part of this patchset?
Okay.. will include all possible dais.
+ break;
case LPASS_DP_RX:
ret = regmap_fields_write(dmactl->burst8, id,
LPAIF_DMACTL_BURSTEN_INCR4);
@@ -380,6 +522,10 @@ 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;
@@ -434,6 +580,16 @@ 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",
@@ -476,6 +632,22 @@ 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);
@@ -540,6 +712,24 @@ 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);
@@ -619,6 +809,38 @@ 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;
+
+ if (dai_id == LPASS_CDC_DMA_RX0 ||
+ dai_id == LPASS_CDC_DMA_TX3 ||
+ dai_id == LPASS_CDC_DMA_VA_TX0) {
+ return lpass_platform_cdc_dma_mmap(component, substream, vma);
+ }
+ return 0;
+}
+
static irqreturn_t lpass_dma_interrupt_handler(
struct snd_pcm_substream *substream,
struct lpass_data *drvdata,
@@ -635,6 +857,14 @@ 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);
@@ -758,18 +988,112 @@ 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_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;
+ if (dai_id == LPASS_CDC_DMA_RX0) {
+ buf->bytes = lpass_platform_rxtx_hardware.buffer_bytes_max;
+ buf->addr = drvdata->rxtx_cdc_dma_lpm_buf;
+ } else if (dai_id == LPASS_CDC_DMA_TX3) {
+ buf->bytes = lpass_platform_rxtx_hardware.buffer_bytes_max;
+ buf->addr = drvdata->rxtx_cdc_dma_lpm_buf +
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 = drvdata->va_cdc_dma_lpm_buf;
+ }
+
+ 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);
+ if (is_cdc_dma_port(dai_id))
+ return lpass_platform_prealloc_cdc_dma_buffer(component,
pcm, dai_id);
May be a comment here would be nice for reader to understand why we
allocate this buffer.
Okay. will add comments.
+ 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)
@@ -804,6 +1128,22 @@ static int lpass_platform_pcmops_resume(struct
snd_soc_component *component)
return regcache_sync(map);
}
+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 0;
+}
static const struct snd_soc_component_driver
lpass_component_driver = {
.name = DRV_NAME,
@@ -814,9 +1154,11 @@ 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,
isn't this just snd_pcm_lib_mmap_iomem for cdc dma.
Yes. it's required for only cdc dma.
.pcm_construct = lpass_platform_pcm_new,
.suspend = lpass_platform_pcmops_suspend,
.resume = lpass_platform_pcmops_resume,
+ .copy_user = lpass_platform_copy,
Why do we need this for other non cdc dma dais?
Am thinking that we shoudl have a seperate instance of this for dais
that can only do dma with hardware buffers.
Okay. How to maintain 2 instances in the same platform driver?
};
@@ -854,6 +1196,60 @@ 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,
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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