From: Rander Wang Date: Thu, 12 Dec 2019 01:45:02 +0000 (-0600) Subject: soundwire: intel: update stream callbacks for hwparams/free stream operations X-Git-Tag: v5.10.7~3368^2~7^2~21 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4b206d34b92224496c42226c4b6d92719056c8b6;p=platform%2Fkernel%2Flinux-rpi.git soundwire: intel: update stream callbacks for hwparams/free stream operations The SoundWire DAIs for Intel platform are created in drivers/soundwire/intel.c, while the communication with the Intel DSP is all controlled in soc/sof/intel When the DAI status changes, a callback is used to bridge the gap between the two subsystems. The naming of the existing 'config_stream' callback does not map well with any of ALSA/ASoC concepts. This patch renames it as 'params_stream' to be more self-explanatory. A new 'free_stream' callback is added in case any resources allocated in the 'params_stream' stage need to be released. In the SOF implementation, this is used in the hw_free case to release the DMA channels over IPC. These two callbacks now rely on structures which expose the link_id and alh_stream_id (required by the firmware IPC), instead of a list of parameters. The 'void *' definitions are changed to use explicit types, as suggested on alsa-devel during earlier reviews. Signed-off-by: Rander Wang Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20191212014507.28050-7-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul --- diff --git a/drivers/soundwire/intel.c b/drivers/soundwire/intel.c index 99dc610..0371d3d 100644 --- a/drivers/soundwire/intel.c +++ b/drivers/soundwire/intel.c @@ -529,17 +529,24 @@ intel_pdi_alh_configure(struct sdw_intel *sdw, struct sdw_cdns_pdi *pdi) intel_writel(alh, SDW_ALH_STRMZCFG(pdi->intel_alh_id), conf); } -static int intel_config_stream(struct sdw_intel *sdw, +static int intel_params_stream(struct sdw_intel *sdw, struct snd_pcm_substream *substream, struct snd_soc_dai *dai, - struct snd_pcm_hw_params *hw_params, int link_id) + struct snd_pcm_hw_params *hw_params, + int link_id, int alh_stream_id) { struct sdw_intel_link_res *res = sdw->res; + struct sdw_intel_stream_params_data params_data; - if (res->ops && res->ops->config_stream && res->arg) - return res->ops->config_stream(res->arg, - substream, dai, hw_params, link_id); + params_data.substream = substream; + params_data.dai = dai; + params_data.hw_params = hw_params; + params_data.link_id = link_id; + params_data.alh_stream_id = alh_stream_id; + if (res->ops && res->ops->params_stream && res->dev) + return res->ops->params_stream(res->dev, + ¶ms_data); return -EIO; } @@ -654,7 +661,8 @@ static int intel_hw_params(struct snd_pcm_substream *substream, /* Inform DSP about PDI stream number */ - ret = intel_config_stream(sdw, substream, dai, params, + ret = intel_params_stream(sdw, substream, dai, params, + sdw->instance, pdi->intel_alh_id); if (ret) goto error; diff --git a/drivers/soundwire/intel.h b/drivers/soundwire/intel.h index e4cc1d3..38b7c12 100644 --- a/drivers/soundwire/intel.h +++ b/drivers/soundwire/intel.h @@ -14,7 +14,7 @@ * @alh: ALH (Audio Link Hub) pointer * @irq: Interrupt line * @ops: Shim callback ops - * @arg: Shim callback ops argument + * @dev: device implementing hw_params and free callbacks */ struct sdw_intel_link_res { struct platform_device *pdev; @@ -24,7 +24,7 @@ struct sdw_intel_link_res { void __iomem *alh; int irq; const struct sdw_intel_ops *ops; - void *arg; + struct device *dev; }; #endif /* __SDW_INTEL_LOCAL_H */ diff --git a/drivers/soundwire/intel_init.c b/drivers/soundwire/intel_init.c index bc739a3..4b76940 100644 --- a/drivers/soundwire/intel_init.c +++ b/drivers/soundwire/intel_init.c @@ -119,6 +119,7 @@ static struct sdw_intel_ctx link->alh = res->mmio_base + SDW_ALH_BASE; link->ops = res->ops; + link->dev = res->dev; memset(&pdevinfo, 0, sizeof(pdevinfo)); diff --git a/include/linux/soundwire/sdw_intel.h b/include/linux/soundwire/sdw_intel.h index 034eca8..3ccb38d 100644 --- a/include/linux/soundwire/sdw_intel.h +++ b/include/linux/soundwire/sdw_intel.h @@ -5,14 +5,38 @@ #define __SDW_INTEL_H /** + * struct sdw_intel_stream_params_data: configuration passed during + * the @params_stream callback, e.g. for interaction with DSP + * firmware. + */ +struct sdw_intel_stream_params_data { + struct snd_pcm_substream *substream; + struct snd_soc_dai *dai; + struct snd_pcm_hw_params *hw_params; + int link_id; + int alh_stream_id; +}; + +/** + * struct sdw_intel_stream_free_data: configuration passed during + * the @free_stream callback, e.g. for interaction with DSP + * firmware. + */ +struct sdw_intel_stream_free_data { + struct snd_pcm_substream *substream; + struct snd_soc_dai *dai; + int link_id; +}; + +/** * struct sdw_intel_ops: Intel audio driver callback ops * - * @config_stream: configure the stream with the hw_params - * the first argument containing the context is mandatory */ struct sdw_intel_ops { - int (*config_stream)(void *arg, void *substream, - void *dai, void *hw_params, int stream_num); + int (*params_stream)(struct device *dev, + struct sdw_intel_stream_params_data *params_data); + int (*free_stream)(struct device *dev, + struct sdw_intel_stream_free_data *free_data); }; /**