ASoC: wm_adsp: Move DVFS control into codec driver

In theory the ADSP driver should not need to know anything
about the codec it is part of. But the WM5102 needs DVFS
control based on ADSP clocking speed. This was being handled
by bundling part of the knowledge of this into the ADSP driver.

This change moves this handling out of the ADSP driver and
into the WM5102 driver.

Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 45 insertions, 2 deletions

diff --git a/sound/soc/codecs/wm5102.c b/sound/soc/codecs/wm5102.c
index b73e3a3da2d2..11eba0e58fc0 100644
--- a/sound/soc/codecs/wm5102.c
+++ b/sound/soc/codecs/wm5102.c
@@ -614,6 +614,49 @@ static int wm5102_sysclk_ev(struct snd_soc_dapm_widget *w,
 	return arizona_dvfs_sysclk_ev(w, kcontrol, event);
 }
 
+static int wm5102_adsp_power_ev(struct snd_soc_dapm_widget *w,
+		   struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
+	struct arizona *arizona = dev_get_drvdata(codec->dev->parent);
+	unsigned int v;
+	int ret;
+
+	switch (event) {
+	case SND_SOC_DAPM_PRE_PMU:
+		ret = regmap_read(arizona->regmap, ARIZONA_SYSTEM_CLOCK_1, &v);
+		if (ret != 0) {
+			dev_err(codec->dev,
+				"Failed to read SYSCLK state: %d\n", ret);
+			return -EIO;
+		}
+
+		v = (v & ARIZONA_SYSCLK_FREQ_MASK) >> ARIZONA_SYSCLK_FREQ_SHIFT;
+
+		if (v >= 3) {
+			ret = arizona_dvfs_up(codec, ARIZONA_DVFS_ADSP1_RQ);
+			if (ret) {
+				dev_err(codec->dev,
+					"Failed to raise DVFS: %d\n", ret);
+				return ret;
+			}
+		}
+		break;
+
+	case SND_SOC_DAPM_POST_PMD:
+		ret = arizona_dvfs_down(codec, ARIZONA_DVFS_ADSP1_RQ);
+		if (ret)
+			dev_warn(codec->dev,
+				 "Failed to lower DVFS: %d\n", ret);
+		break;
+
+	default:
+		break;
+	}
+
+	return wm_adsp2_early_event(w, kcontrol, event);
+}
+
 static int wm5102_out_comp_coeff_get(struct snd_kcontrol *kcontrol,
 				     struct snd_ctl_elem_value *ucontrol)
 {
@@ -1369,7 +1412,7 @@ ARIZONA_MUX_WIDGETS(ISRC2DEC2, "ISRC2DEC2"),
 ARIZONA_MUX_WIDGETS(ISRC2INT1, "ISRC2INT1"),
 ARIZONA_MUX_WIDGETS(ISRC2INT2, "ISRC2INT2"),
 
-WM_ADSP2("DSP1", 0),
+WM_ADSP2_E("DSP1", 0, wm5102_adsp_power_ev),
 
 SND_SOC_DAPM_OUTPUT("HPOUT1L"),
 SND_SOC_DAPM_OUTPUT("HPOUT1R"),
@@ -1922,7 +1965,7 @@ static int wm5102_probe(struct platform_device *pdev)
 	wm5102->core.adsp[0].mem = wm5102_dsp1_regions;
 	wm5102->core.adsp[0].num_mems = ARRAY_SIZE(wm5102_dsp1_regions);
 
-	ret = wm_adsp2_init(&wm5102->core.adsp[0], true);
+	ret = wm_adsp2_init(&wm5102->core.adsp[0]);
 	if (ret != 0)
 		return ret;