ASoC: da7210: Add 11025/22050/44100/88200 rate support

This driver USE PLL for 11025/22050/44100/88200 rate.
To enable switching to bypass mode, PLL is always turned on.
Special thanks to Phil
Signed-off-by: Phil Edworthy <Phil.Edworthy@renesas.com>
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/da7210.c

@@ -55,8 +55,14 @@
 #define DA7210_DAI_SRC_SEL		0x25
 #define DA7210_DAI_CFG1			0x26
 #define DA7210_DAI_CFG3			0x28
+#define DA7210_PLL_DIV1			0x29
+#define DA7210_PLL_DIV2			0x2A
 #define DA7210_PLL_DIV3			0x2B
 #define DA7210_PLL			0x2C
+#define DA7210_A_HID_UNLOCK		0x8A
+#define DA7210_A_TEST_UNLOCK		0x8B
+#define DA7210_A_PLL1			0x90
+#define DA7210_A_CP_MODE		0xA7
 
 /* STARTUP1 bit fields */
 #define DA7210_SC_MST_EN		(1 << 0)
@@ -124,13 +130,17 @@
 /* PLL bit fields */
 #define DA7210_PLL_FS_MASK		(0xF << 0)
 #define DA7210_PLL_FS_8000		(0x1 << 0)
+#define DA7210_PLL_FS_11025		(0x2 << 0)
 #define DA7210_PLL_FS_12000		(0x3 << 0)
 #define DA7210_PLL_FS_16000		(0x5 << 0)
+#define DA7210_PLL_FS_22050		(0x6 << 0)
 #define DA7210_PLL_FS_24000		(0x7 << 0)
 #define DA7210_PLL_FS_32000		(0x9 << 0)
+#define DA7210_PLL_FS_44100		(0xA << 0)
 #define DA7210_PLL_FS_48000		(0xB << 0)
+#define DA7210_PLL_FS_88200		(0xE << 0)
 #define DA7210_PLL_FS_96000		(0xF << 0)
-
+#define DA7210_PLL_EN			(0x1 << 7)
 
 #define DA7210_VERSION "0.0.1"
 
@@ -249,7 +259,7 @@ static int da7210_hw_params(struct snd_pcm_substream *substream,
 	struct snd_soc_codec *codec = socdev->card->codec;
 	u32 dai_cfg1;
 	u32 hpf_reg, hpf_mask, hpf_value;
-	u32 fs;
+	u32 fs, bypass;
 
 	/* set DAI source to Left and Right ADC */
 	da7210_write(codec, DA7210_DAI_SRC_SEL,
@@ -281,38 +291,76 @@ static int da7210_hw_params(struct snd_pcm_substream *substream,
 		fs		= DA7210_PLL_FS_8000;
 		hpf_mask	= DA7210_VOICE_F0_MASK	| DA7210_VOICE_EN;
 		hpf_value	= DA7210_VOICE_F0_25	| DA7210_VOICE_EN;
+		bypass		= DA7210_PLL_BYP;
+		break;
+	case 11025:
+		fs		= DA7210_PLL_FS_11025;
+		hpf_mask	= DA7210_VOICE_F0_MASK	| DA7210_VOICE_EN;
+		hpf_value	= DA7210_VOICE_F0_25	| DA7210_VOICE_EN;
+		bypass		= 0;
 		break;
 	case 12000:
 		fs		= DA7210_PLL_FS_12000;
 		hpf_mask	= DA7210_VOICE_F0_MASK	| DA7210_VOICE_EN;
 		hpf_value	= DA7210_VOICE_F0_25	| DA7210_VOICE_EN;
+		bypass		= DA7210_PLL_BYP;
 		break;
 	case 16000:
 		fs		= DA7210_PLL_FS_16000;
 		hpf_mask	= DA7210_VOICE_F0_MASK	| DA7210_VOICE_EN;
 		hpf_value	= DA7210_VOICE_F0_25	| DA7210_VOICE_EN;
+		bypass		= DA7210_PLL_BYP;
+		break;
+	case 22050:
+		fs		= DA7210_PLL_FS_22050;
+		hpf_mask	= DA7210_VOICE_EN;
+		hpf_value	= 0;
+		bypass		= 0;
 		break;
 	case 32000:
 		fs		= DA7210_PLL_FS_32000;
 		hpf_mask	= DA7210_VOICE_EN;
 		hpf_value	= 0;
+		bypass		= DA7210_PLL_BYP;
+		break;
+	case 44100:
+		fs		= DA7210_PLL_FS_44100;
+		hpf_mask	= DA7210_VOICE_EN;
+		hpf_value	= 0;
+		bypass		= 0;
 		break;
 	case 48000:
 		fs		= DA7210_PLL_FS_48000;
 		hpf_mask	= DA7210_VOICE_EN;
 		hpf_value	= 0;
+		bypass		= DA7210_PLL_BYP;
+		break;
+	case 88200:
+		fs		= DA7210_PLL_FS_88200;
+		hpf_mask	= DA7210_VOICE_EN;
+		hpf_value	= 0;
+		bypass		= 0;
 		break;
 	case 96000:
 		fs		= DA7210_PLL_FS_96000;
 		hpf_mask	= DA7210_VOICE_EN;
 		hpf_value	= 0;
+		bypass		= DA7210_PLL_BYP;
 		break;
 	default:
 		return -EINVAL;
 	}
 
+	/* Disable active mode */
+	snd_soc_update_bits(codec, DA7210_STARTUP1, DA7210_SC_MST_EN, 0);
+
 	snd_soc_update_bits(codec, hpf_reg, hpf_mask, hpf_value);
 	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_FS_MASK, fs);
+	snd_soc_update_bits(codec, DA7210_PLL_DIV3, DA7210_PLL_BYP, bypass);
+
+	/* Enable active mode */
+	snd_soc_update_bits(codec, DA7210_STARTUP1,
+			    DA7210_SC_MST_EN, DA7210_SC_MST_EN);
 
 	return 0;
 }
@@ -390,6 +438,7 @@ struct snd_soc_dai da7210_dai = {
 		.formats = DA7210_FORMATS,
 	},
 	.ops = &da7210_dai_ops,
+	.symmetric_rates = 1,
 };
 EXPORT_SYMBOL_GPL(da7210_dai);
 
@@ -444,7 +493,21 @@ static int da7210_init(struct da7210_priv *da7210)
 	/* FIXME
 	 *
 	 * This driver use fixed value here
+	 * And below settings expects MCLK = 12.288MHz
+	 *
+	 * When you select different MCLK, please check...
+	 *      DA7210_PLL_DIV1 val
+	 *      DA7210_PLL_DIV2 val
+	 *      DA7210_PLL_DIV3 val
+	 *      DA7210_PLL_DIV3 :: DA7210_MCLK_RANGExxx
+	 */
+
+	/*
+	 * make sure that DA7210 use bypass mode before start up
 	 */
+	da7210_write(codec, DA7210_STARTUP1, 0);
+	da7210_write(codec, DA7210_PLL_DIV3,
+		     DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
 
 	/*
 	 * ADC settings
@@ -482,9 +545,28 @@ static int da7210_init(struct da7210_priv *da7210)
 	/* Diable PLL and bypass it */
 	da7210_write(codec, DA7210_PLL, DA7210_PLL_FS_48000);
 
-	/* Bypass PLL and set MCLK freq rang to 10-20MHz */
-	da7210_write(codec, DA7210_PLL_DIV3,
+	/*
+	 * If 48kHz sound came, it use bypass mode,
+	 * and when it is 44.1kHz, it use PLL.
+	 *
+	 * This time, this driver sets PLL always ON
+	 * and controls bypass/PLL mode by switching
+	 * DA7210_PLL_DIV3 :: DA7210_PLL_BYP bit.
+	 *   see da7210_hw_params
+	 */
+	da7210_write(codec, DA7210_PLL_DIV1, 0xE5); /* MCLK = 12.288MHz */
+	da7210_write(codec, DA7210_PLL_DIV2, 0x99);
+	da7210_write(codec, DA7210_PLL_DIV3, 0x0A |
 		     DA7210_MCLK_RANGE_10_20_MHZ | DA7210_PLL_BYP);
+	snd_soc_update_bits(codec, DA7210_PLL, DA7210_PLL_EN, DA7210_PLL_EN);
+
+	/* As suggested by Dialog */
+	da7210_write(codec, DA7210_A_HID_UNLOCK,	0x8B); /* unlock */
+	da7210_write(codec, DA7210_A_TEST_UNLOCK,	0xB4);
+	da7210_write(codec, DA7210_A_PLL1,		0x01);
+	da7210_write(codec, DA7210_A_CP_MODE,		0x7C);
+	da7210_write(codec, DA7210_A_HID_UNLOCK,	0x00); /* re-lock */
+	da7210_write(codec, DA7210_A_TEST_UNLOCK,	0x00);
 
 	/* Activate all enabled subsystem */
 	da7210_write(codec, DA7210_STARTUP1, DA7210_SC_MST_EN);