修改内核路径

hc

2024-05-14 bedbef8ad3e75a304af6361af235302bcc61d06b

 kernel/sound/soc/codecs/wm8904.c
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@@ -697,6 +697,7 @@
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 	int dcs_mask;
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 	int dcs_l, dcs_r;
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 	int dcs_l_reg, dcs_r_reg;
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+	int an_out_reg;
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 	int timeout;
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 	int pwr_reg;
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@@ -712,6 +713,7 @@
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 		dcs_mask = WM8904_DCS_ENA_CHAN_0 | WM8904_DCS_ENA_CHAN_1;
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 		dcs_r_reg = WM8904_DC_SERVO_8;
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 		dcs_l_reg = WM8904_DC_SERVO_9;
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+		an_out_reg = WM8904_ANALOGUE_OUT1_LEFT;
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 		dcs_l = 0;
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 		dcs_r = 1;
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 		break;
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@@ -720,6 +722,7 @@
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 		dcs_mask = WM8904_DCS_ENA_CHAN_2 | WM8904_DCS_ENA_CHAN_3;
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 		dcs_r_reg = WM8904_DC_SERVO_6;
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 		dcs_l_reg = WM8904_DC_SERVO_7;
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+		an_out_reg = WM8904_ANALOGUE_OUT2_LEFT;
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 		dcs_l = 2;
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 		dcs_r = 3;
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 		break;
..
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@@ -792,6 +795,10 @@
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 		snd_soc_component_update_bits(component, reg,
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 				    WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP,
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 				    WM8904_HPL_ENA_OUTP | WM8904_HPR_ENA_OUTP);
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+
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+		/* Update volume, requires PGA to be powered */
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+		val = snd_soc_component_read(component, an_out_reg);
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+		snd_soc_component_write(component, an_out_reg, val);
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 		break;
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 	case SND_SOC_DAPM_POST_PMU:
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@@ -2299,6 +2306,9 @@
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 	regmap_update_bits(wm8904->regmap, WM8904_BIAS_CONTROL_0,
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 			    WM8904_POBCTRL, 0);
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+	/* Fill the cache for the ADC test register */
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+	regmap_read(wm8904->regmap, WM8904_ADC_TEST_0, &val);
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+
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 	/* Can leave the device powered off until we need it */
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 	regcache_cache_only(wm8904->regmap, true);
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 	regulator_bulk_disable(ARRAY_SIZE(wm8904->supplies), wm8904->supplies);