alsa-devel-bounces@xxxxxxxxxxxxxxxx wrote:
> Add a mechanism to register a machine specific callback
> to calculate and set the McBSP Tx/Rx threshold.
>
> Signed-off-by: Liam Girdwood <lrg@xxxxxxxxxxxxxxx>
> ---
> sound/soc/omap/omap-mcbsp.c | 22 +++++++++++++++++++++-
> sound/soc/omap/omap-mcbsp.h | 2 ++
> 2 files changed, 23 insertions(+), 1 deletions(-)
>
> diff --git a/sound/soc/omap/omap-mcbsp.c
> b/sound/soc/omap/omap-mcbsp.c index 6f44cb4..9a1583d 100644 ---
> a/sound/soc/omap/omap-mcbsp.c +++ b/sound/soc/omap/omap-mcbsp.c
> @@ -51,6 +51,9 @@ struct omap_mcbsp_data {
> unsigned int bus_id;
> struct omap_mcbsp_reg_cfg regs;
> unsigned int fmt;
> +
> + /* optional machine set_threshold() sample value */
> + void (*mach_set_threshold)(struct snd_pcm_substream *substream);
> /* * Flags indicating is the bus already activated and
> configured by
> * another substream
> @@ -306,7 +309,11 @@ static int
> omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
> } else if (cpu_is_omap343x()) {
> dma = omap24xx_dma_reqs[bus_id][substream->stream];
> port = omap34xx_mcbsp_port[bus_id][substream->stream]; -
> omap_mcbsp_dai_dma_params[id][substream->stream].set_threshold =
> + if (mcbsp_data->mach_set_threshold)
> +
> omap_mcbsp_dai_dma_params[id][substream->stream].set_threshold = +
> mcbsp_data->mach_set_threshold;
> + else
> +
> omap_mcbsp_dai_dma_params[id][substream->stream].set_threshold =
>
> omap_mcbsp_set_threshold;
> /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */
> if (omap_mcbsp_get_dma_op_mode(bus_id) ==
> @@ -835,6 +842,19 @@ int omap_mcbsp_st_add_controls(struct
> snd_soc_codec *codec, int mcbsp_id)
> }
> EXPORT_SYMBOL_GPL(omap_mcbsp_st_add_controls);
>
> +int omap_bcbsp_set_threshold_func(struct snd_soc_dai *cpu_dai,
> + void (*mach_set_threshold)(struct
> snd_pcm_substream *substream))
I think you meant omap_mcbsp_set_threshold_func here.
> +{
> + struct omap_mcbsp_data *mcbsp_data =
> to_mcbsp(cpu_dai->private_data);
> +
> + if (!cpu_is_omap34xx())
> + return -ENODEV;
> +
> + mcbsp_data->mach_set_threshold = mach_set_threshold; + return 0;
> +}
> +EXPORT_SYMBOL_GPL(omap_bcbsp_set_threshold_func);
> +
> static int __init snd_omap_mcbsp_init(void)
> {
> return snd_soc_register_dais(omap_mcbsp_dai,
> diff --git a/sound/soc/omap/omap-mcbsp.h
> b/sound/soc/omap/omap-mcbsp.h index 6c363e5..f8d8044 100644 ---
> a/sound/soc/omap/omap-mcbsp.h +++ b/sound/soc/omap/omap-mcbsp.h
> @@ -58,5 +58,7 @@ enum omap_mcbsp_div {
> extern struct snd_soc_dai omap_mcbsp_dai[NUM_LINKS];
>
> int omap_mcbsp_st_add_controls(struct snd_soc_codec *codec,
> int mcbsp_id);
> +int omap_bcbsp_set_threshold_func(struct snd_soc_dai *cpu_dai,
> + void (*mach_set_threshold)(struct
> snd_pcm_substream *substream));
Also here.
>
> #endif
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