From: Ranjani Sridharan ranjani.sridharan@linux.intel.com
Add ops to get/put a core that will be used to power up/down a core along with incrementing/decrementing its ref_count.
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/ops.h | 63 ++++++++++++++++++++++++++++++++++++++++ sound/soc/sof/sof-priv.h | 2 ++ 2 files changed, 65 insertions(+)
diff --git a/sound/soc/sof/ops.h b/sound/soc/sof/ops.h index 09bf38fdfb8a..61dc2768b000 100644 --- a/sound/soc/sof/ops.h +++ b/sound/soc/sof/ops.h @@ -103,6 +103,69 @@ static inline int snd_sof_dsp_core_power_down(struct snd_sof_dev *sdev, return ret; }
+static inline int snd_sof_dsp_core_get(struct snd_sof_dev *sdev, int core) +{ + if (core > sdev->num_cores - 1) { + dev_err(sdev->dev, "invalid core id: %d for num_cores: %d\n", core, + sdev->num_cores); + return -EINVAL; + } + + if (sof_ops(sdev)->core_get) { + int ret; + + /* if current ref_count is > 0, increment it and return */ + if (sdev->dsp_core_ref_count[core] > 0) { + sdev->dsp_core_ref_count[core]++; + return 0; + } + + /* power up the core */ + ret = sof_ops(sdev)->core_get(sdev, core); + if (ret < 0) + return ret; + + /* increment ref_count */ + sdev->dsp_core_ref_count[core]++; + + /* and update enabled_cores_mask */ + sdev->enabled_cores_mask |= BIT(core); + + dev_dbg(sdev->dev, "Core %d powered up\n", core); + } + + return 0; +} + +static inline int snd_sof_dsp_core_put(struct snd_sof_dev *sdev, int core) +{ + if (core > sdev->num_cores - 1) { + dev_err(sdev->dev, "invalid core id: %d for num_cores: %d\n", core, + sdev->num_cores); + return -EINVAL; + } + + if (sof_ops(sdev)->core_put) { + int ret; + + /* decrement ref_count and return if it is > 0 */ + if (--(sdev->dsp_core_ref_count[core]) > 0) + return 0; + + /* power down the core */ + ret = sof_ops(sdev)->core_put(sdev, core); + if (ret < 0) + return ret; + + /* and update enabled_cores_mask */ + sdev->enabled_cores_mask &= ~BIT(core); + + dev_dbg(sdev->dev, "Core %d powered down\n", core); + } + + return 0; +} + /* pre/post fw load */ static inline int snd_sof_dsp_pre_fw_run(struct snd_sof_dev *sdev) { diff --git a/sound/soc/sof/sof-priv.h b/sound/soc/sof/sof-priv.h index a56f3c8b483f..f7c86a72ac10 100644 --- a/sound/soc/sof/sof-priv.h +++ b/sound/soc/sof/sof-priv.h @@ -134,6 +134,8 @@ struct snd_sof_dsp_ops { unsigned int core_mask); /* optional */ int (*core_power_down)(struct snd_sof_dev *sof_dev, unsigned int core_mask); /* optional */ + int (*core_get)(struct snd_sof_dev *sof_dev, int core); /* optional */ + int (*core_put)(struct snd_sof_dev *sof_dev, int core); /* optional */
/* * Register IO: only used by respective drivers themselves,