From: Ranjani Sridharan ranjani.sridharan@linux.intel.com
Add two fields num_cores and dsp_cores_ref_count to struct snd_sof_dev. These will be used to maintain the ref count for each core to determine when it should be powered up or down.
Signed-off-by: Ranjani Sridharan ranjani.sridharan@linux.intel.com Reviewed-by: Guennadi Liakhovetski guennadi.liakhovetski@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com --- sound/soc/sof/imx/imx8.c | 1 + sound/soc/sof/imx/imx8m.c | 1 + sound/soc/sof/intel/bdw.c | 9 +++++++++ sound/soc/sof/intel/byt.c | 9 +++++++++ sound/soc/sof/intel/hda.c | 2 ++ sound/soc/sof/intel/pci-tng.c | 9 +++++++++ sound/soc/sof/sof-priv.h | 15 +++++++++++++++ 7 files changed, 46 insertions(+)
diff --git a/sound/soc/sof/imx/imx8.c b/sound/soc/sof/imx/imx8.c index 0aeb44d0acc7..2d0448b3c8c3 100644 --- a/sound/soc/sof/imx/imx8.c +++ b/sound/soc/sof/imx/imx8.c @@ -188,6 +188,7 @@ static int imx8_probe(struct snd_sof_dev *sdev) if (!priv) return -ENOMEM;
+ sdev->num_cores = 1; sdev->pdata->hw_pdata = priv; priv->dev = sdev->dev; priv->sdev = sdev; diff --git a/sound/soc/sof/imx/imx8m.c b/sound/soc/sof/imx/imx8m.c index f454a5d0a87e..c94422323d67 100644 --- a/sound/soc/sof/imx/imx8m.c +++ b/sound/soc/sof/imx/imx8m.c @@ -108,6 +108,7 @@ static int imx8m_probe(struct snd_sof_dev *sdev) if (!priv) return -ENOMEM;
+ sdev->num_cores = 1; sdev->pdata->hw_pdata = priv; priv->dev = sdev->dev; priv->sdev = sdev; diff --git a/sound/soc/sof/intel/bdw.c b/sound/soc/sof/intel/bdw.c index 156006bed017..1a8a39a878fd 100644 --- a/sound/soc/sof/intel/bdw.c +++ b/sound/soc/sof/intel/bdw.c @@ -412,10 +412,19 @@ static int bdw_probe(struct snd_sof_dev *sdev) const struct sof_dev_desc *desc = pdata->desc; struct platform_device *pdev = container_of(sdev->dev, struct platform_device, dev); + const struct sof_intel_dsp_desc *chip; struct resource *mmio; u32 base, size; int ret;
+ chip = get_chip_info(sdev->pdata); + if (!chip) { + dev_err(sdev->dev, "error: no such device supported\n"); + return -EIO; + } + + sdev->num_cores = chip->cores_num; + /* LPE base */ mmio = platform_get_resource(pdev, IORESOURCE_MEM, desc->resindex_lpe_base); diff --git a/sound/soc/sof/intel/byt.c b/sound/soc/sof/intel/byt.c index e2fa08f1ae74..dcfeaedb8fd5 100644 --- a/sound/soc/sof/intel/byt.c +++ b/sound/soc/sof/intel/byt.c @@ -113,10 +113,19 @@ static int byt_acpi_probe(struct snd_sof_dev *sdev) const struct sof_dev_desc *desc = pdata->desc; struct platform_device *pdev = container_of(sdev->dev, struct platform_device, dev); + const struct sof_intel_dsp_desc *chip; struct resource *mmio; u32 base, size; int ret;
+ chip = get_chip_info(sdev->pdata); + if (!chip) { + dev_err(sdev->dev, "error: no such device supported\n"); + return -EIO; + } + + sdev->num_cores = chip->cores_num; + /* DSP DMA can only access low 31 bits of host memory */ ret = dma_coerce_mask_and_coherent(sdev->dev, DMA_BIT_MASK(31)); if (ret < 0) { diff --git a/sound/soc/sof/intel/hda.c b/sound/soc/sof/intel/hda.c index 1ebf8db488b8..3c69e8fcd43b 100644 --- a/sound/soc/sof/intel/hda.c +++ b/sound/soc/sof/intel/hda.c @@ -897,6 +897,8 @@ int hda_dsp_probe(struct snd_sof_dev *sdev) goto err; }
+ sdev->num_cores = chip->cores_num; + hdev = devm_kzalloc(sdev->dev, sizeof(*hdev), GFP_KERNEL); if (!hdev) return -ENOMEM; diff --git a/sound/soc/sof/intel/pci-tng.c b/sound/soc/sof/intel/pci-tng.c index 18eb41b8a8f4..f8c841caa362 100644 --- a/sound/soc/sof/intel/pci-tng.c +++ b/sound/soc/sof/intel/pci-tng.c @@ -55,9 +55,18 @@ static int tangier_pci_probe(struct snd_sof_dev *sdev) struct snd_sof_pdata *pdata = sdev->pdata; const struct sof_dev_desc *desc = pdata->desc; struct pci_dev *pci = to_pci_dev(sdev->dev); + const struct sof_intel_dsp_desc *chip; u32 base, size; int ret;
+ chip = get_chip_info(sdev->pdata); + if (!chip) { + dev_err(sdev->dev, "error: no such device supported\n"); + return -EIO; + } + + sdev->num_cores = chip->cores_num; + /* DSP DMA can only access low 31 bits of host memory */ ret = dma_coerce_mask_and_coherent(&pci->dev, DMA_BIT_MASK(31)); if (ret < 0) { diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index 9a8af76b2f8b..a56f3c8b483f 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -71,6 +71,9 @@ extern int sof_core_debug; /* So far the primary core on all DSPs has ID 0 */ #define SOF_DSP_PRIMARY_CORE 0
+/* max number of DSP cores */ +#define SOF_MAX_DSP_NUM_CORES 8 + /* DSP power state */ enum sof_dsp_power_states { SOF_DSP_PM_D0, @@ -477,6 +480,18 @@ struct snd_sof_dev {
bool msi_enabled;
+ /* DSP core context */ + u32 num_cores; + + /* + * ref count per core that will be modified during system suspend/resume and during pcm + * hw_params/hw_free. This doesn't need to be protected with a mutex because pcm + * hw_params/hw_free are already protected by the PCM mutex in the ALSA framework in + * sound/core/ when streams are active and during system suspend/resume, streams are + * already suspended. + */ + int dsp_core_ref_count[SOF_MAX_DSP_NUM_CORES]; + void *private; /* core does not touch this */ };