9 Feb
2021
9 Feb
'21
11:16 a.m.
On Mon, Feb 8, 2021 at 7:53 PM Mark Brown broonie@kernel.org wrote:
On Sun, Feb 07, 2021 at 06:23:50PM +0800, Shengjiu Wang wrote:
+static int fsl_rpmsg_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,struct snd_soc_dai *dai)+{
...
ret = clk_prepare_enable(rpmsg->mclk);if (ret)dev_err(dai->dev, "failed to enable mclk: %d\n", ret);return ret;+}
+static int fsl_rpmsg_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)+{
struct fsl_rpmsg *rpmsg = snd_soc_dai_get_drvdata(dai);clk_disable_unprepare(rpmsg->mclk);hw_params() can be called multiple times and there's no need for it to be balanced with hw_free(), I'd move this to a different callback (DAPM should work well).
Which callback should I use? Is there an example?
best regards wang shengjiu