| Message ID | 1637581599-24120-2-git-send-email-srivasam@codeaurora.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | None | expand |
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@codeaurora.org> > Co-developed-by: Venkata Prasad Potturu <potturu@codeaurora.org> > Signed-off-by: Venkata Prasad Potturu <potturu@codeaurora.org> > --- > 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. > 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. > + 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 = > + > + 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; > + > + rval = devm_regmap_field_bulk_alloc(dev, map, &rd_dmactl->intf, > + &v->rxtx_rdma_intf, 15); can we define this magic number 15 properly? > + 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. > + > + 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? > + 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. > + 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. > .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. > > }; > > @@ -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) >
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@codeaurora.org> >> Co-developed-by: Venkata Prasad Potturu <potturu@codeaurora.org> >> Signed-off-by: Venkata Prasad Potturu <potturu@codeaurora.org> >> --- >> 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) >>
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)); + 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); @@ -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; + + 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) { @@ -126,22 +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: + 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); + 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, .pcm_construct = lpass_platform_pcm_new, .suspend = lpass_platform_pcmops_suspend, .resume = lpass_platform_pcmops_resume, + .copy_user = lpass_platform_copy, }; @@ -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)