The patch ASoC: add mclk-fs support to audio graph card has been applied to the asoc tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 757652dd597139adb09e196a93db93feb6fb8a64 Mon Sep 17 00:00:00 2001 From: Olivier Moysan <olivier.moysan@xxxxxx> Date: Thu, 9 Nov 2017 15:07:58 +0100 Subject: [PATCH] ASoC: add mclk-fs support to audio graph card Add mclk-fs support to audio graph card as it was previously implemented in simple card. Signed-off-by: Olivier Moysan <olivier.moysan@xxxxxx> Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> --- sound/soc/generic/audio-graph-card.c | 47 ++++++++++++++++++++++++++++++------ 1 file changed, 39 insertions(+), 8 deletions(-) diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c index 488c52f9405f..1b6164249341 100644 --- a/sound/soc/generic/audio-graph-card.c +++ b/sound/soc/generic/audio-graph-card.c @@ -29,7 +29,9 @@ struct graph_card_data { struct graph_dai_props { struct asoc_simple_dai cpu_dai; struct asoc_simple_dai codec_dai; + unsigned int mclk_fs; } *dai_props; + unsigned int mclk_fs; struct snd_soc_dai_link *dai_link; struct gpio_desc *pa_gpio; }; @@ -95,9 +97,43 @@ static void asoc_graph_card_shutdown(struct snd_pcm_substream *substream) asoc_simple_card_clk_disable(&dai_props->codec_dai); } +static int asoc_graph_card_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct snd_soc_dai *cpu_dai = rtd->cpu_dai; + struct graph_card_data *priv = snd_soc_card_get_drvdata(rtd->card); + struct graph_dai_props *dai_props = graph_priv_to_props(priv, rtd->num); + unsigned int mclk, mclk_fs = 0; + int ret = 0; + + if (priv->mclk_fs) + mclk_fs = priv->mclk_fs; + else if (dai_props->mclk_fs) + mclk_fs = dai_props->mclk_fs; + + if (mclk_fs) { + mclk = params_rate(params) * mclk_fs; + ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk, + SND_SOC_CLOCK_IN); + if (ret && ret != -ENOTSUPP) + goto err; + + ret = snd_soc_dai_set_sysclk(cpu_dai, 0, mclk, + SND_SOC_CLOCK_OUT); + if (ret && ret != -ENOTSUPP) + goto err; + } + return 0; +err: + return ret; +} + static const struct snd_soc_ops asoc_graph_card_ops = { .startup = asoc_graph_card_startup, .shutdown = asoc_graph_card_shutdown, + .hw_params = asoc_graph_card_hw_params, }; static int asoc_graph_card_dai_init(struct snd_soc_pcm_runtime *rtd) @@ -146,10 +182,7 @@ static int asoc_graph_card_dai_link_of(struct device_node *cpu_port, if (ret < 0) goto dai_link_of_err; - /* - * we need to consider "mclk-fs" around here - * see simple-card - */ + of_property_read_u32(rcpu_ep, "mclk-fs", &dai_props->mclk_fs); ret = asoc_simple_card_parse_graph_cpu(cpu_ep, dai_link); if (ret < 0) @@ -217,10 +250,8 @@ static int asoc_graph_card_parse_of(struct graph_card_data *priv) if (ret < 0) return ret; - /* - * we need to consider "mclk-fs" around here - * see simple-card - */ + /* Factor to mclk, used in hw_params() */ + of_property_read_u32(node, "mclk-fs", &priv->mclk_fs); of_for_each_phandle(&it, rc, node, "dais", NULL, 0) { ret = asoc_graph_card_dai_link_of(it.node, priv, idx++); -- 2.15.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
