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>

arch/arm/boot/dts/amlogic/tl1_t962x2_skt.dts

@@ -1493,6 +1493,7 @@
 				"tdma_dout2_z",
 				"tdma_dout3_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 

arch/arm/boot/dts/amlogic/tl1_t962x2_t309.dts

@@ -1494,6 +1494,7 @@
 				"tdma_fs_z",
 				"tdma_dout0_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 

arch/arm/boot/dts/amlogic/tl1_t962x2_x301.dts

@@ -1590,6 +1590,7 @@
 				"tdma_fs_z",
 				"tdma_dout0_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 

arch/arm64/boot/dts/amlogic/tl1_t962x2_t309.dts

@@ -1492,6 +1492,7 @@
 				"tdma_fs_z",
 				"tdma_dout0_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 

arch/arm64/boot/dts/amlogic/tl1_t962x2_x301.dts

@@ -1549,6 +1549,7 @@
 				"tdma_fs_z",
 				"tdma_dout0_z";
 			function = "tdma_out";
+			bias-disable;
 		};
 	};
 

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 */

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,

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);