ASoC: Intel: bytcr_rt5651: Configure PLL1 before using it

When platform_clock_control() first selects PLL1 as sysclk the PLL_CTRL
registers have not been setup yet and we effectively have an invalid clock
configuration until byt_rt5651_aif1_hw_params() gets called.

Add a new byt_rt5651_prepare_and_enable_pll1() helper and use that from
both platform_clock_control() and byt_rt5651_aif1_hw_params() to fix this.

Tested-by: Carlo Caione <carlo@endlessm.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c
index 91b5841af62275110b9e1cefa7161efd1050a067..af30c730f4326e8ee6b2b901b3261c0ec3976370 100644 (file)
--- a/sound/soc/intel/boards/bytcr_rt5651.c
+++ b/sound/soc/intel/boards/bytcr_rt5651.c
@@ -111,6 +111,38 @@ static void log_quirks(struct device *dev)
 
 #define BYT_CODEC_DAI1 "rt5651-aif1"
 
+static int byt_rt5651_prepare_and_enable_pll1(struct snd_soc_dai *codec_dai,
+                                             int rate, int bclk_ratio)
+{
+       int clk_id, clk_freq, ret;
+
+       /* Configure the PLL before selecting it */
+       if (!(byt_rt5651_quirk & BYT_RT5651_MCLK_EN)) {
+               clk_id = RT5651_PLL1_S_BCLK1,
+               clk_freq = rate * bclk_ratio;
+       } else {
+               clk_id = RT5651_PLL1_S_MCLK;
+               if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ)
+                       clk_freq = 25000000;
+               else
+                       clk_freq = 19200000;
+       }
+       ret = snd_soc_dai_set_pll(codec_dai, 0, clk_id, clk_freq, rate * 512);
+       if (ret < 0) {
+               dev_err(codec_dai->codec->dev, "can't set pll: %d\n", ret);
+               return ret;
+       }
+
+       ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_PLL1,
+                                    rate * 512, SND_SOC_CLOCK_IN);
+       if (ret < 0) {
+               dev_err(codec_dai->codec->dev, "can't set clock %d\n", ret);
+               return ret;
+       }
+
+       return 0;
+}
+
 static int platform_clock_control(struct snd_soc_dapm_widget *w,
                                  struct snd_kcontrol *k, int  event)
 {
@@ -136,9 +168,7 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w,
                                return ret;
                        }
                }
-               ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_PLL1,
-                                            48000 * 512,
-                                            SND_SOC_CLOCK_IN);
+               ret = byt_rt5651_prepare_and_enable_pll1(codec_dai, 48000, 50);
        } else {
                /*
                 * Set codec clock source to internal clock before
@@ -252,44 +282,11 @@ static int byt_rt5651_aif1_hw_params(struct snd_pcm_substream *substream,
 {
        struct snd_soc_pcm_runtime *rtd = substream->private_data;
        struct snd_soc_dai *codec_dai = rtd->codec_dai;
-       int ret;
+       int rate = params_rate(params);
 
        snd_soc_dai_set_bclk_ratio(codec_dai, 50);
 
-       ret = snd_soc_dai_set_sysclk(codec_dai, RT5651_SCLK_S_PLL1,
-                                    params_rate(params) * 512,
-                                    SND_SOC_CLOCK_IN);
-       if (ret < 0) {
-               dev_err(rtd->dev, "can't set codec clock %d\n", ret);
-               return ret;
-       }
-
-       if (!(byt_rt5651_quirk & BYT_RT5651_MCLK_EN)) {
-               /* 2x25 bit slots on SSP2 */
-               ret = snd_soc_dai_set_pll(codec_dai, 0,
-                                       RT5651_PLL1_S_BCLK1,
-                                       params_rate(params) * 50,
-                                       params_rate(params) * 512);
-       } else {
-               if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ) {
-                       ret = snd_soc_dai_set_pll(codec_dai, 0,
-                                               RT5651_PLL1_S_MCLK,
-                                               25000000,
-                                               params_rate(params) * 512);
-               } else {
-                       ret = snd_soc_dai_set_pll(codec_dai, 0,
-                                               RT5651_PLL1_S_MCLK,
-                                               19200000,
-                                               params_rate(params) * 512);
-               }
-       }
-
-       if (ret < 0) {
-               dev_err(rtd->dev, "can't set codec pll: %d\n", ret);
-               return ret;
-       }
-
-       return 0;
+       return byt_rt5651_prepare_and_enable_pll1(codec_dai, rate, 50);
 }
 
 static int byt_rt5651_quirk_cb(const struct dmi_system_id *id)