ASoC: qcom: lpass-cpu: Fix clock disable failure

Disable MI2S bit clock from PAUSE/STOP/SUSPEND usecase instead of
shutdown time. Acheive this by invoking clk_disable API from
cpu daiops trigger instead of cpu daiops shutdown.
Change non-atomic API "clk_prepare_enable" to atomic API
"clk_enable" in trigger, as trigger is being called from atomic context.

Fixes: 7e6799d8f87d ("ASoC: qcom: lpass-cpu: Enable MI2S BCLK and LRCLK together")

Signed-off-by: V Sujith Kumar Reddy <vsujithk@codeaurora.org>
Signed-off-by: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>
Link: https://lore.kernel.org/r/1603098363-9251-1-git-send-email-srivasam@codeaurora.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index ba2aca3..9d17c87 100644 (file)
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -80,6 +80,12 @@ static int lpass_cpu_daiops_startup(struct snd_pcm_substream *substream,
                dev_err(dai->dev, "error in enabling mi2s osr clk: %d\n", ret);
                return ret;
        }
+       ret = clk_prepare(drvdata->mi2s_bit_clk[dai->driver->id]);
+       if (ret) {
+               dev_err(dai->dev, "error in enabling mi2s bit clk: %d\n", ret);
+               clk_disable_unprepare(drvdata->mi2s_osr_clk[dai->driver->id]);
+               return ret;
+       }
        return 0;
 }
 
@@ -88,9 +94,8 @@ static void lpass_cpu_daiops_shutdown(struct snd_pcm_substream *substream,
 {
        struct lpass_data *drvdata = snd_soc_dai_get_drvdata(dai);
 
-       clk_disable_unprepare(drvdata->mi2s_bit_clk[dai->driver->id]);
-
        clk_disable_unprepare(drvdata->mi2s_osr_clk[dai->driver->id]);
+       clk_unprepare(drvdata->mi2s_bit_clk[dai->driver->id]);
 }
 
 static int lpass_cpu_daiops_hw_params(struct snd_pcm_substream *substream,
@@ -303,10 +308,10 @@ static int lpass_cpu_daiops_trigger(struct snd_pcm_substream *substream,
                        dev_err(dai->dev, "error writing to i2sctl reg: %d\n",
                                ret);
 
-               ret = clk_prepare_enable(drvdata->mi2s_bit_clk[id]);
+               ret = clk_enable(drvdata->mi2s_bit_clk[id]);
                if (ret) {
                        dev_err(dai->dev, "error in enabling mi2s bit clk: %d\n", ret);
-                       clk_disable_unprepare(drvdata->mi2s_osr_clk[id]);
+                       clk_disable(drvdata->mi2s_osr_clk[id]);
                        return ret;
                }
 
@@ -324,6 +329,7 @@ static int lpass_cpu_daiops_trigger(struct snd_pcm_substream *substream,
                if (ret)
                        dev_err(dai->dev, "error writing to i2sctl reg: %d\n",
                                ret);
+               clk_disable(drvdata->mi2s_bit_clk[dai->driver->id]);
                break;
        }