From 009354756a2ee7719d2002aa5243040c206a02d2 Mon Sep 17 00:00:00 2001
From: Shuai Li<shuai.li@amlogic.com>
Date: Tue, 12  Mar  2019  06:40:20  +0000
Subject: audio: fix H-voltage when tdm disable [1/1]

PD#SWPL-2952

Problem:
High voltage will cause the tdmout
data pin wrong I2S data which cause pop.

Solution:
Disable the bias of gpio.

Verify:
I2S data will be low when I2s closed.

Change-Id: If5d68e0f30df074f528dfec21cbe297795bc4ea7
Signed-off-by: Shuai Li <shuai.li@amlogic.com>
---
diff --git a/arch/arm/boot/dts/amlogic/tl1_t962x2_skt.dts b/arch/arm/boot/dts/amlogic/tl1_t962x2_skt.dts
index 562e8bb..e3d901f 100644
--- a/arch/arm/boot/dts/amlogic/tl1_t962x2_skt.dts
+++ b/arch/arm/boot/dts/amlogic/tl1_t962x2_skt.dts
@@ -1493,6 +1493,7 @@
 				"tdma_dout2_z",
 				"tdma_dout3_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 
diff --git a/arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts b/arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts
index c8ec735..73621c6 100644
--- a/arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts
+++ b/arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts
@@ -1494,6 +1494,7 @@
 				"tdma_fs_z",
 				"tdma_dout0_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 
diff --git a/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts b/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts
index 9aac226..402275a 100644
--- a/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts
+++ b/arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts
@@ -1590,6 +1590,7 @@
 				"tdma_fs_z",
 				"tdma_dout0_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts b/arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts
index 4fa1576..fe252bb 100644
--- a/arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts
+++ b/arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts
@@ -1492,6 +1492,7 @@
 				"tdma_fs_z",
 				"tdma_dout0_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 
diff --git a/arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts b/arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts
index 658680a..cf68cd9 100644
--- a/arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts
+++ b/arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts
@@ -1549,6 +1549,7 @@
 				"tdma_fs_z",
 				"tdma_dout0_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 
diff --git a/sound/soc/amlogic/auge/tdm.c b/sound/soc/amlogic/auge/tdm.c
index a4ebd94..79742b3 100644
--- a/sound/soc/amlogic/auge/tdm.c
+++ b/sound/soc/amlogic/auge/tdm.c
@@ -625,9 +625,6 @@ static int aml_dai_tdm_trigger(struct snd_pcm_substream *substream, int cmd,
 			break;
 		}
 
-		aml_tdm_enable(p_tdm->actrl,
-			substream->stream, p_tdm->id, false);
-
 		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 			dev_info(substream->pcm->card->dev, "tdm playback stop\n");
 			aml_frddr_enable(p_tdm->fddr, 0);
@@ -643,6 +640,8 @@ static int aml_dai_tdm_trigger(struct snd_pcm_substream *substream, int cmd,
 			dev_info(substream->pcm->card->dev, "tdm capture stop\n");
 			aml_toddr_enable(p_tdm->tddr, 0);
 		}
+		aml_tdm_enable(p_tdm->actrl,
+			substream->stream, p_tdm->id, false);
 		break;
 	default:
 		return -EINVAL;
@@ -902,6 +901,14 @@ static int aml_dai_set_tdm_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
 	aml_tdm_set_format(p_tdm->actrl,
 		&(p_tdm->setting), p_tdm->clk_sel, p_tdm->id, fmt,
 		1, 1);
+	if (p_tdm->contns_clk && !IS_ERR(p_tdm->mclk)) {
+		int ret = clk_prepare_enable(p_tdm->mclk);
+
+		if (ret) {
+			pr_err("Can't enable mclk: %d\n", ret);
+			return ret;
+		}
+	}
 
 capture:
 	/* update skew for ACODEC_ADC */
diff --git a/sound/soc/amlogic/auge/tdm_hw.c b/sound/soc/amlogic/auge/tdm_hw.c
index f8f89bc..a685e58 100644
--- a/sound/soc/amlogic/auge/tdm_hw.c
+++ b/sound/soc/amlogic/auge/tdm_hw.c
@@ -637,6 +637,16 @@ void aml_tdmout_get_aed_info(int tdmout_id,
 		*frddrtype = (val >> 4) & 0x7;
 }
 
+void aml_tdmout_enable_gain(int tdmout_id, int en)
+{
+	unsigned int reg, offset;
+
+	offset = EE_AUDIO_TDMOUT_B_CTRL1
+			- EE_AUDIO_TDMOUT_A_CTRL1;
+	reg = EE_AUDIO_TDMOUT_A_CTRL1 + offset * tdmout_id;
+	audiobus_update_bits(reg, 0x1 << 26, !!en << 26);
+}
+
 void aml_tdm_clk_pad_select(
 	struct aml_audio_controller *actrl,
 	int mpad, int mclk_sel,
diff --git a/sound/soc/amlogic/auge/tdm_hw.h b/sound/soc/amlogic/auge/tdm_hw.h
index 85fe630..2c5fe03 100644
--- a/sound/soc/amlogic/auge/tdm_hw.h
+++ b/sound/soc/amlogic/auge/tdm_hw.h
@@ -71,6 +71,7 @@ extern void aml_tdm_arb_config(
 extern void aml_tdm_fifo_reset(
 	struct aml_audio_controller *actrl,
 	int stream, int index);
+void aml_tdmout_enable_gain(int tdmout_id, int en);
 
 extern int tdmout_get_frddr_type(int bitwidth);
 
--
cgit