audio: auge: fix the samesource spdif clock recovery issue [1/1]

PD#SWPL-3667

Problem:
after playback none-48K raw audio, the spdif clock
is not recoved to 48K when tdm/spdif same source

Solution:
use the same clock source as tdm if samesource and
config that when tdm hardware prepare.

Verify:
AC213

Change-Id: I0d5dc5f51b5de14d155902e0fe72c293071c93ec
Signed-off-by: Jian Xu <jian.xu@amlogic.com>

4 files changed, 72 insertions, 3 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 48f467e..ea44e65 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -13806,7 +13806,6 @@ M: Xing Wang <xing.wang@amlogic.com>
 M: Zhe Wang <Zhe.Wang@amlogic.com>
 M: Shuai Li <shuai.li@amlogic.com>
 M: Jian Xu <jian.xu@amlogic.com>
-M: Jian Xu <jian.xu@amlogic.com>
 F: arch/arm64/boot/dts/amlogic/*
 F: arch/arm/boot/dts/amlogic/*
 F: arch/arm64/configs/meson64_defconfig
diff --git a/sound/soc/amlogic/auge/spdif.c b/sound/soc/amlogic/auge/spdif.c
index acc4822..fa3709b 100644
--- a/sound/soc/amlogic/auge/spdif.c
+++ b/sound/soc/amlogic/auge/spdif.c
@@ -38,6 +38,7 @@
 #include "spdif_match_table.c"
 #include "resample.h"
 #include "resample_hw.h"
+#include "spdif.h"
 
 #define DRV_NAME "snd_spdif"
 
@@ -48,6 +49,7 @@
 /*#define __SPDIFIN_INSERT_CHNUM__*/
 
 /*#define __SPDIFIN_AUDIO_TYPE_HW__*/
+struct aml_spdif *spdif_priv[2];
 
 static int aml_dai_set_spdif_sysclk(struct snd_soc_dai *cpu_dai,
 				int clk_id, unsigned int freq, int dir);
@@ -115,6 +117,7 @@ struct aml_spdif {
 	bool mute;
 	enum SPDIF_SRC spdifin_src;
 	int clk_tuning_enable;
+	bool on;
 };
 
 static const struct snd_pcm_hardware aml_spdif_hardware = {
@@ -322,6 +325,27 @@ int spdifin_source_set_enum(
 	return 0;
 }
 
+
+int spdif_set_audio_clk(int id,
+		struct clk *clk_src, int rate, int same)
+{
+	int ret = 0;
+
+	if (spdif_priv[id]->on && same) {
+		pr_debug("spdif priority");
+		return 0;
+	}
+
+	clk_set_parent(spdif_priv[id]->clk_spdifout, clk_src);
+	clk_set_rate(spdif_priv[id]->clk_spdifout, rate);
+	ret = clk_prepare_enable(spdif_priv[id]->clk_spdifout);
+	if (ret) {
+		pr_err("%s Can't enable clk_spdifout clock,ret  %d\n",
+		__func__, ret);
+	}
+	return 0;
+}
+
 static int spdif_clk_get(struct snd_kcontrol *kcontrol,
 					struct snd_ctl_elem_value *ucontrol)
 {
@@ -750,6 +774,7 @@ static int aml_spdif_open(struct snd_pcm_substream *substream)
 	snd_soc_set_runtime_hwparams(substream, &aml_spdif_hardware);
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		p_spdif->on = true;
 		p_spdif->fddr = aml_audio_register_frddr(dev,
 			p_spdif->actrl,
 			aml_spdif_ddr_isr, substream, false);
@@ -794,6 +819,7 @@ static int aml_spdif_close(struct snd_pcm_substream *substream)
 	pr_info("%s\n", __func__);
 
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		p_spdif->on = false;
 		aml_audio_unregister_frddr(p_spdif->dev, substream);
 	} else {
 		aml_audio_unregister_toddr(p_spdif->dev, substream);
@@ -1329,8 +1355,13 @@ static void aml_set_spdifclk(struct aml_spdif *p_spdif)
 		mpll_freq = p_spdif->sysclk_freq * 58 / 2; /* 96k */
 #endif
 		clk_set_rate(p_spdif->sysclk, mpll_freq);
+		/*
 		clk_set_rate(p_spdif->clk_spdifout,
 			p_spdif->sysclk_freq);
+		*/
+		spdif_set_audio_clk(p_spdif->id,
+			p_spdif->sysclk,
+			p_spdif->sysclk_freq, 0);
 
 		ret = clk_prepare_enable(p_spdif->sysclk);
 		if (ret) {
@@ -1590,7 +1621,6 @@ static int aml_spdif_platform_probe(struct platform_device *pdev)
 	ret = aml_spdif_parse_of(pdev);
 	if (ret)
 		return -EINVAL;
-
 	if (aml_spdif->clk_cont)
 		spdifout_play_with_zerodata(aml_spdif->id, spdif_reenable);
 
@@ -1600,7 +1630,7 @@ static int aml_spdif_platform_probe(struct platform_device *pdev)
 		dev_err(dev, "devm_snd_soc_register_component failed\n");
 		return ret;
 	}
-
+	spdif_priv[aml_spdif->id] = aml_spdif;
 	pr_info("%s, register soc platform\n", __func__);
 
 	return devm_snd_soc_register_platform(dev, &aml_spdif_platform);
diff --git a/sound/soc/amlogic/auge/spdif.h b/sound/soc/amlogic/auge/spdif.h
new file mode 100644
index 0000000..66e36d8
--- a/dev/null
+++ b/sound/soc/amlogic/auge/spdif.h
@@ -0,0 +1,32 @@
+/*
+ * sound/soc/amlogic/auge/spdif.h
+ *
+ * Copyright (C) 2017 Amlogic, Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#ifndef __AML_SPDIF_H__
+#define __AML_SPDIF_H__
+#include <linux/clk.h>
+#if 0
+enum SPDIF_ID {
+	SPDIF_A,
+	SPDIF_B,
+	SPDIF_ID_CNT
+};
+#endif
+
+extern int spdif_set_audio_clk(int id,
+		struct clk *clk_src, int rate, int same);
+
+#endif
diff --git a/sound/soc/amlogic/auge/tdm.c b/sound/soc/amlogic/auge/tdm.c
index e4af0e5..09fa586 100644
--- a/sound/soc/amlogic/auge/tdm.c
+++ b/sound/soc/amlogic/auge/tdm.c
@@ -43,6 +43,8 @@
 #include "spdif_hw.h"
 #include "tdm_match_table.c"
 #include "effects_v2.h"
+#include "spdif.h"
+
 
 /*#define __PTM_TDM_CLK__*/
 
@@ -112,6 +114,7 @@ struct aml_tdm {
 	int tdmin_lb_src;
 	int start_clk_enable;
 	int clk_tuning_enable;
+	int last_rate;
 };
 
 static const struct snd_pcm_hardware aml_tdm_hardware = {
@@ -489,6 +492,9 @@ static int aml_dai_tdm_prepare(struct snd_pcm_substream *substream,
 					fr, p_tdm->samesource_sel,
 					p_tdm->lane_ss,
 					p_tdm->chipinfo->reset_reg_offset);
+					/* sharebuffer default uses spdif_a */
+				spdif_set_audio_clk(p_tdm->samesource_sel - 3,
+					p_tdm->clk, runtime->rate*128, 1);
 		}
 
 		/* i2s source to hdmix */
@@ -954,6 +960,7 @@ static int aml_dai_tdm_hw_params(struct snd_pcm_substream *substream,
 		&& (aml_check_sharebuffer_valid(p_tdm->fddr,
 				p_tdm->samesource_sel))
 		&& p_tdm->en_share) {
+#if 0
 		int mux = 0, ratio = 0;
 
 			sharebuffer_get_mclk_fs_ratio(p_tdm->samesource_sel,
@@ -969,6 +976,7 @@ static int aml_dai_tdm_hw_params(struct snd_pcm_substream *substream,
 					rate * ratio);
 				clk_prepare_enable(p_tdm->samesrc_clk);
 			}
+#endif
 	}
 
 	if (!p_tdm->contns_clk && !IS_ERR(p_tdm->mclk)) {