ASoC: cs42l42: Provide finer control on playback path

Removing cs42l42_hpdrv_evt that enables the entire chain and replace by
a set of widgets that can better define the codec
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210306185553.62053-9-tanureal@opensource.cirrus.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/cs42l42.c

@@ -462,54 +462,33 @@ static const struct snd_kcontrol_new cs42l42_snd_controls[] = {
 				0x3f, 1, mixer_tlv)
 };
 
-static int cs42l42_hpdrv_evt(struct snd_soc_dapm_widget *w,
-				struct snd_kcontrol *kcontrol, int event)
-{
-	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
-
-	if (event & SND_SOC_DAPM_POST_PMU) {
-		/* Enable the channels */
-		snd_soc_component_update_bits(component, CS42L42_ASP_RX_DAI0_EN,
-				CS42L42_ASP_RX0_CH_EN_MASK,
-				(CS42L42_ASP_RX0_CH1_EN |
-				CS42L42_ASP_RX0_CH2_EN) <<
-				CS42L42_ASP_RX0_CH_EN_SHIFT);
-
-		/* Power up */
-		snd_soc_component_update_bits(component, CS42L42_PWR_CTL1,
-			CS42L42_ASP_DAI_PDN_MASK | CS42L42_MIXER_PDN_MASK |
-				CS42L42_HP_PDN_MASK, 0);
-	} else if (event & SND_SOC_DAPM_PRE_PMD) {
-		/* Disable the channels */
-		snd_soc_component_update_bits(component, CS42L42_ASP_RX_DAI0_EN,
-				CS42L42_ASP_RX0_CH_EN_MASK, 0);
-
-		/* Power down */
-		snd_soc_component_update_bits(component, CS42L42_PWR_CTL1,
-			CS42L42_ASP_DAI_PDN_MASK | CS42L42_MIXER_PDN_MASK |
-				CS42L42_HP_PDN_MASK,
-			CS42L42_ASP_DAI_PDN_MASK | CS42L42_MIXER_PDN_MASK |
-				CS42L42_HP_PDN_MASK);
-	} else {
-		dev_err(component->dev, "Invalid event 0x%x\n", event);
-	}
-	return 0;
-}
-
 static const struct snd_soc_dapm_widget cs42l42_dapm_widgets[] = {
+	/* Playback Path */
 	SND_SOC_DAPM_OUTPUT("HP"),
-	SND_SOC_DAPM_AIF_IN("SDIN", NULL, 0, CS42L42_ASP_CLK_CFG,
-					CS42L42_ASP_SCLK_EN_SHIFT, false),
-	SND_SOC_DAPM_OUT_DRV_E("HPDRV", SND_SOC_NOPM, 0,
-					0, NULL, 0, cs42l42_hpdrv_evt,
-					SND_SOC_DAPM_POST_PMU |
-					SND_SOC_DAPM_PRE_PMD)
+	SND_SOC_DAPM_DAC("DAC", NULL, CS42L42_PWR_CTL1, CS42L42_HP_PDN_SHIFT, 1),
+	SND_SOC_DAPM_MIXER("MIXER", CS42L42_PWR_CTL1, CS42L42_MIXER_PDN_SHIFT, 1, NULL, 0),
+	SND_SOC_DAPM_AIF_IN("SDIN1", NULL, 0, CS42L42_ASP_RX_DAI0_EN, CS42L42_ASP_RX0_CH1_SHIFT, 0),
+	SND_SOC_DAPM_AIF_IN("SDIN2", NULL, 1, CS42L42_ASP_RX_DAI0_EN, CS42L42_ASP_RX0_CH2_SHIFT, 0),
+
+	/* Playback Requirements */
+	SND_SOC_DAPM_SUPPLY("ASP DAI0", CS42L42_PWR_CTL1, CS42L42_ASP_DAI_PDN_SHIFT, 1, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("SCLK", CS42L42_ASP_CLK_CFG, CS42L42_ASP_SCLK_EN_SHIFT, 0, NULL, 0),
 };
 
 static const struct snd_soc_dapm_route cs42l42_audio_map[] = {
-	{"SDIN", NULL, "Playback"},
-	{"HPDRV", NULL, "SDIN"},
-	{"HP", NULL, "HPDRV"}
+	/* Playback Path */
+	{"HP", NULL, "DAC"},
+	{"DAC", NULL, "MIXER"},
+	{"MIXER", NULL, "SDIN1"},
+	{"MIXER", NULL, "SDIN2"},
+	{"SDIN1", NULL, "Playback"},
+	{"SDIN2", NULL, "Playback"},
+
+	/* Playback Requirements */
+	{"SDIN1", NULL, "ASP DAI0"},
+	{"SDIN2", NULL, "ASP DAI0"},
+	{"SDIN1", NULL, "SCLK"},
+	{"SDIN2", NULL, "SCLK"},
 };
 
 static int cs42l42_component_probe(struct snd_soc_component *component)

sound/soc/codecs/cs42l42.h

@@ -695,10 +695,10 @@
 #define CS42L42_ASP_RX_DAI0_EN		(CS42L42_PAGE_2A + 0x01)
 #define CS42L42_ASP_RX0_CH_EN_SHIFT	2
 #define CS42L42_ASP_RX0_CH_EN_MASK	(0xf << CS42L42_ASP_RX0_CH_EN_SHIFT)
-#define CS42L42_ASP_RX0_CH1_EN		1
-#define CS42L42_ASP_RX0_CH2_EN		2
-#define CS42L42_ASP_RX0_CH3_EN		4
-#define CS42L42_ASP_RX0_CH4_EN		8
+#define CS42L42_ASP_RX0_CH1_SHIFT	2
+#define CS42L42_ASP_RX0_CH2_SHIFT	3
+#define CS42L42_ASP_RX0_CH3_SHIFT	4
+#define CS42L42_ASP_RX0_CH4_SHIFT	5
 
 #define CS42L42_ASP_RX_DAI0_CH1_AP_RES	(CS42L42_PAGE_2A + 0x02)
 #define CS42L42_ASP_RX_DAI0_CH1_BIT_MSB	(CS42L42_PAGE_2A + 0x03)