ASoC: simple-card-utils: Set sysclk on all components

If an mclk-fs value was provided in the device tree configuration, the
calculated MCLK was fed into the downstream codec DAI and CPU DAI,
however set_sysclk was not being called on the platform device. Some
platform devices such as the Xilinx Audio Formatter need to know the MCLK
as well.

Call snd_soc_component_set_sysclk on each component in the stream to set
the proper sysclk value in addition to the existing call of
snd_soc_dai_set_sysclk on the codec DAI and CPU DAI. This may end up
resulting in redundant calls if one of the snd_soc_dai_set_sysclk calls
ends up calling snd_soc_component_set_sysclk itself, but that isn't
expected to cause any significant harm.

Fixes: f48dcbb6d47d ("ASoC: simple-card-utils: share asoc_simple_hw_param()")
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/20220120195832.1742271-5-robert.hancock@calian.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simple-card-utils.c
index a81323d..9736102 100644 (file)
--- a/sound/soc/generic/simple-card-utils.c
+++ b/sound/soc/generic/simple-card-utils.c
@@ -275,6 +275,7 @@ int asoc_simple_hw_params(struct snd_pcm_substream *substream,
                mclk_fs = props->mclk_fs;
 
        if (mclk_fs) {
+               struct snd_soc_component *component;
                mclk = params_rate(params) * mclk_fs;
 
                for_each_prop_dai_codec(props, i, pdai) {
@@ -282,16 +283,30 @@ int asoc_simple_hw_params(struct snd_pcm_substream *substream,
                        if (ret < 0)
                                return ret;
                }
+
                for_each_prop_dai_cpu(props, i, pdai) {
                        ret = asoc_simple_set_clk_rate(pdai, mclk);
                        if (ret < 0)
                                return ret;
                }
+
+               /* Ensure sysclk is set on all components in case any
+                * (such as platform components) are missed by calls to
+                * snd_soc_dai_set_sysclk.
+                */
+               for_each_rtd_components(rtd, i, component) {
+                       ret = snd_soc_component_set_sysclk(component, 0, 0,
+                                                          mclk, SND_SOC_CLOCK_IN);
+                       if (ret && ret != -ENOTSUPP)
+                               return ret;
+               }
+
                for_each_rtd_codec_dais(rtd, i, sdai) {
                        ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_IN);
                        if (ret && ret != -ENOTSUPP)
                                return ret;
                }
+
                for_each_rtd_cpu_dais(rtd, i, sdai) {
                        ret = snd_soc_dai_set_sysclk(sdai, 0, mclk, SND_SOC_CLOCK_OUT);
                        if (ret && ret != -ENOTSUPP)