From ebce6fdb8f7603d6daedfe8748caec4ed9e0d8ba Mon Sep 17 00:00:00 2001
From: hjc <hjc@rock-chips.com>
Date: Tue, 2 Sep 2014 15:48:42 +0800
Subject: [PATCH] audio: rk3036 codec: 	add rk3036 sound card unfinished
 function, If not,it not to 	set I2S clk and div,and lead to no sound on
 some TV.

---
 sound/soc/rockchip/rk_rk3036.c | 55 ++++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 3 deletions(-)
 mode change 100644 => 100755 sound/soc/rockchip/rk_rk3036.c

diff --git a/sound/soc/rockchip/rk_rk3036.c b/sound/soc/rockchip/rk_rk3036.c
old mode 100644
new mode 100755
index ae413af647c1..b08134dfcfd2
--- a/sound/soc/rockchip/rk_rk3036.c
+++ b/sound/soc/rockchip/rk_rk3036.c
@@ -23,24 +23,73 @@
 #include "rk_pcm.h"
 #include "rk_i2s.h"
 
+#if 0
+#define	DBG(x...)	pr_info("rk_rk3036" x)
+#else
+#define	DBG(x...)
+#endif
 static int rk30_hw_params(struct snd_pcm_substream *
 	substream, struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
-	unsigned int dai_fmt = rtd->dai_link->dai_fmt;
+	unsigned int pll_out = 0, dai_fmt = rtd->dai_link->dai_fmt;
 	int ret;
 
+	DBG("Enter::%s----%d\n", __func__, __LINE__);
+
 	/* set codec DAI configuration */
 	ret = snd_soc_dai_set_fmt(codec_dai, dai_fmt);
-	if (ret < 0)
+	if (ret < 0) {
+		DBG("%s():failed to set the format for codec side\n",
+		    __func__);
 		return ret;
+	}
 
 	/* set cpu DAI configuration */
 	ret = snd_soc_dai_set_fmt(cpu_dai, dai_fmt);
-	if (ret < 0)
+	if (ret < 0) {
+		DBG("%s():failed to set the format for cpu side\n",
+		    __func__);
+		return ret;
+	}
+
+	switch (params_rate(params)) {
+	case 8000:
+	case 16000:
+	case 24000:
+	case 32000:
+	case 48000:
+		pll_out = 12288000;
+		break;
+	case 11025:
+	case 22050:
+	case 44100:
+		pll_out = 11289600;
+		break;
+	default:
+		DBG("Enter:%s, %d, Error rate=%d\n",
+		    __func__, __LINE__, params_rate(params));
+		return -EINVAL;
+		break;
+	}
+
+	DBG("Enter:%s, %d, rate=%d\n",
+	    __func__, __LINE__, params_rate(params));
+
+	/*Set the system clk for codec*/
+	ret = snd_soc_dai_set_sysclk(codec_dai, 0, pll_out, SND_SOC_CLOCK_IN);
+	if (ret < 0) {
+		DBG("rk_hifi_hw_params:failed to set the sysclk for codec\n");
 		return ret;
+	}
+
+	snd_soc_dai_set_clkdiv(cpu_dai, ROCKCHIP_DIV_BCLK,
+			       (pll_out/4)/params_rate(params)-1);
+	snd_soc_dai_set_clkdiv(cpu_dai, ROCKCHIP_DIV_MCLK, 3);
+	DBG("Enter:%s, %d, pll_out/4/params_rate(params) = %d \n",
+	    __func__, __LINE__, (pll_out/4)/params_rate(params));
 
 	return 0;
 }
-- 
2.34.1