[PATCH v6] sun4i-codec: Add FM, Line and Mic inputs

[Danny Milosavljevic <dannym@scratchpost.org>]

Add inputs to sun4i-codec:
 - FM-in Left and Right
 - Line-in Left and Right
 - Mic1-in
 - Mic2-in

Signed-off-by: Danny Milosavljevic <dannym+a@scratchpost.org>
Tested-by: Danny Milosavljevic <dannym+a@scratchpost.org> (ONLY ON A20!)
---
Hi,

this is the sixth version of the patch that adds inputs to sun4i-codec.

Changes compared to v5 are:
 - Mic preamplifier special cases for A20 and A10 now are now not icky:
   There are two different _widget arrays and the probe() function now selects 
   the right one to pass to snd_soc_register_codec() unmodified.
 - sun7i-specific things (A20-specific things) are now grouped together.

I successfully tested it again on an A20 board using alsamixer, headphones, 
a radio and my ears.
Note that because of missing capturing support I tested only the mixing,
for Mic, Line, and FM.

The patches are on top of
<git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux.git>,
branch "sunxi/for-next".

Regards,
   Danny
---
 b/sound/soc/sunxi/sun4i-codec.c |  179 +++++++++++++++++++++++++++++++++++++---
 1 file changed, 166 insertions(+), 13 deletions(-)

diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index bcbf4da..4241999 100644
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -57,9 +57,20 @@
 #define SUN4I_CODEC_DAC_ACTL_DACAENR			(31)
 #define SUN4I_CODEC_DAC_ACTL_DACAENL			(30)
 #define SUN4I_CODEC_DAC_ACTL_MIXEN			(29)
+#define SUN4I_CODEC_DAC_ACTL_LNG			(26)
+#define SUN4I_CODEC_DAC_ACTL_FMG			(23)
+#define SUN4I_CODEC_DAC_ACTL_MICG			(20)
+#define SUN4I_CODEC_DAC_ACTL_LLNS			(19)
+#define SUN4I_CODEC_DAC_ACTL_RLNS			(18)
+#define SUN4I_CODEC_DAC_ACTL_LFMS			(17)
+#define SUN4I_CODEC_DAC_ACTL_RFMS			(16)
 #define SUN4I_CODEC_DAC_ACTL_LDACLMIXS			(15)
 #define SUN4I_CODEC_DAC_ACTL_RDACRMIXS			(14)
 #define SUN4I_CODEC_DAC_ACTL_LDACRMIXS			(13)
+#define SUN4I_CODEC_DAC_ACTL_MIC1LS			(12)
+#define SUN4I_CODEC_DAC_ACTL_MIC1RS			(11)
+#define SUN4I_CODEC_DAC_ACTL_MIC2LS			(10)
+#define SUN4I_CODEC_DAC_ACTL_MIC2RS			(9)
 #define SUN4I_CODEC_DAC_ACTL_DACPAS			(8)
 #define SUN4I_CODEC_DAC_ACTL_MIXPAS			(7)
 #define SUN4I_CODEC_DAC_ACTL_PA_MUTE			(6)
@@ -84,8 +95,11 @@
 #define SUN4I_CODEC_ADC_ACTL_PREG1EN			(29)
 #define SUN4I_CODEC_ADC_ACTL_PREG2EN			(28)
 #define SUN4I_CODEC_ADC_ACTL_VMICEN			(27)
+#define SUN4I_CODEC_ADC_ACTL_PREG1_A10			(25)
+#define SUN4I_CODEC_ADC_ACTL_PREG2_A10			(23)
 #define SUN4I_CODEC_ADC_ACTL_VADCG			(20)
 #define SUN4I_CODEC_ADC_ACTL_ADCIS			(17)
+#define SUN4I_CODEC_ADC_ACTL_LNRDF			(16)
 #define SUN4I_CODEC_ADC_ACTL_PA_EN			(4)
 #define SUN4I_CODEC_ADC_ACTL_DDE			(3)
 #define SUN4I_CODEC_ADC_DEBUG			(0x2c)
@@ -94,7 +108,6 @@
 #define SUN4I_CODEC_DAC_TXCNT			(0x30)
 #define SUN4I_CODEC_ADC_RXCNT			(0x34)
 #define SUN4I_CODEC_AC_SYS_VERI			(0x38)
-#define SUN4I_CODEC_AC_MIC_PHONE_CAL		(0x3c)
 
 struct sun4i_codec {
 	struct device	*dev;
@@ -402,16 +415,77 @@ static const struct snd_kcontrol_new sun4i_codec_pa_mute =
 			SUN4I_CODEC_DAC_ACTL_PA_MUTE, 1, 0);
 
 static DECLARE_TLV_DB_SCALE(sun4i_codec_pa_volume_scale, -6300, 100, 1);
+static DECLARE_TLV_DB_SCALE(sun4i_codec_linein_loopback_gain_scale, -150, 150, 0);
+static DECLARE_TLV_DB_SCALE(sun4i_codec_fmin_loopback_gain_scale, -450, 150, 0);
+static DECLARE_TLV_DB_SCALE(sun4i_codec_micin_loopback_gain_scale, -450, 150, 0);
+static DECLARE_TLV_DB_RANGE(sun4i_codec_micin_preamp_gain_scale_a10,
+	0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
+	1, 7, TLV_DB_SCALE_ITEM(3500, 300, 0)
+);
+
+#define SUN4I_COMMON_CODEC_WIDGETS \
+	SOC_SINGLE_TLV("PA Volume", SUN4I_CODEC_DAC_ACTL, \
+		       SUN4I_CODEC_DAC_ACTL_PA_VOL, 0x3F, 0, \
+		       sun4i_codec_pa_volume_scale), \
+	/* Line-In, FM-In, Mic1-In, Mic2-In */ \
+	SOC_SINGLE_TLV("Line-In Playback Gain", \
+		       SUN4I_CODEC_DAC_ACTL, \
+		       SUN4I_CODEC_DAC_ACTL_LNG, \
+		       1, \
+		       0, \
+		       sun4i_codec_linein_loopback_gain_scale), \
+	SOC_SINGLE_TLV("FM-In Playback Gain", \
+		       SUN4I_CODEC_DAC_ACTL, \
+		       SUN4I_CODEC_DAC_ACTL_FMG, \
+		       3, \
+		       0, \
+		       sun4i_codec_fmin_loopback_gain_scale), \
+	SOC_SINGLE_TLV("Mic-In Playback Gain", \
+		       SUN4I_CODEC_DAC_ACTL, \
+		       SUN4I_CODEC_DAC_ACTL_MICG, \
+		       7, \
+		       0, \
+		       sun4i_codec_micin_loopback_gain_scale), \
+	SOC_SINGLE_TLV("Mic1-In Boost Switch", \
+		       SUN4I_CODEC_ADC_ACTL, \
+		       SUN4I_CODEC_ADC_ACTL_PREG1EN, \
+		       1, \
+		       0, \
+		       NULL), \
+	SOC_SINGLE_TLV("Mic2-In Boost Switch", \
+		       SUN4I_CODEC_ADC_ACTL, \
+		       SUN4I_CODEC_ADC_ACTL_PREG2EN, \
+		       1, \
+		       0, \
+		       NULL)
 
 static const struct snd_kcontrol_new sun4i_codec_widgets[] = {
-	SOC_SINGLE_TLV("PA Volume", SUN4I_CODEC_DAC_ACTL,
-		       SUN4I_CODEC_DAC_ACTL_PA_VOL, 0x3F, 0,
-		       sun4i_codec_pa_volume_scale),
+	SUN4I_COMMON_CODEC_WIDGETS,
+	SOC_SINGLE_TLV("Mic1-In Boost Gain",
+		       SUN4I_CODEC_ADC_ACTL,
+		       SUN4I_CODEC_ADC_ACTL_PREG1_A10,
+		       3,
+		       0,
+		       sun4i_codec_micin_preamp_gain_scale_a10),
+	SOC_SINGLE_TLV("Mic2-In Boost Gain",
+		       SUN4I_CODEC_ADC_ACTL,
+		       SUN4I_CODEC_ADC_ACTL_PREG2_A10,
+		       3,
+		       0,
+		       sun4i_codec_micin_preamp_gain_scale_a10),
 };
 
 static const struct snd_kcontrol_new sun4i_codec_left_mixer_controls[] = {
 	SOC_DAPM_SINGLE("Left DAC Playback Switch", SUN4I_CODEC_DAC_ACTL,
 			SUN4I_CODEC_DAC_ACTL_LDACLMIXS, 1, 0),
+	SOC_DAPM_SINGLE("Left Line-In Playback Switch", SUN4I_CODEC_DAC_ACTL,
+			SUN4I_CODEC_DAC_ACTL_LLNS, 1, 0),
+	SOC_DAPM_SINGLE("Left FM-In Playback Switch", SUN4I_CODEC_DAC_ACTL,
+			SUN4I_CODEC_DAC_ACTL_LFMS, 1, 0),
+	SOC_DAPM_SINGLE("Mic1-In Playback Switch", SUN4I_CODEC_DAC_ACTL,
+			SUN4I_CODEC_DAC_ACTL_MIC1LS, 1, 0),
+	SOC_DAPM_SINGLE("Mic2-In Playback Switch", SUN4I_CODEC_DAC_ACTL,
+			SUN4I_CODEC_DAC_ACTL_MIC2LS, 1, 0),
 };
 
 static const struct snd_kcontrol_new sun4i_codec_right_mixer_controls[] = {
@@ -419,6 +493,14 @@ static const struct snd_kcontrol_new sun4i_codec_right_mixer_controls[] = {
 			SUN4I_CODEC_DAC_ACTL_RDACRMIXS, 1, 0),
 	SOC_DAPM_SINGLE("Left DAC Playback Switch", SUN4I_CODEC_DAC_ACTL,
 			SUN4I_CODEC_DAC_ACTL_LDACRMIXS, 1, 0),
+	SOC_DAPM_SINGLE("Right Line-In Playback Switch", SUN4I_CODEC_DAC_ACTL,
+			SUN4I_CODEC_DAC_ACTL_RLNS, 1, 0),
+	SOC_DAPM_SINGLE("Right FM-In Playback Switch", SUN4I_CODEC_DAC_ACTL,
+			SUN4I_CODEC_DAC_ACTL_RFMS, 1, 0),
+	SOC_DAPM_SINGLE("Mic1-In Playback Switch", SUN4I_CODEC_DAC_ACTL,
+			SUN4I_CODEC_DAC_ACTL_MIC1RS, 1, 0),
+	SOC_DAPM_SINGLE("Mic2-In Playback Switch", SUN4I_CODEC_DAC_ACTL,
+			SUN4I_CODEC_DAC_ACTL_MIC2RS, 1, 0),
 };
 
 static const struct snd_kcontrol_new sun4i_codec_pa_mixer_controls[] = {
@@ -462,8 +544,16 @@ static const struct snd_soc_dapm_widget sun4i_codec_dapm_widgets[] = {
 
 	SND_SOC_DAPM_OUTPUT("HP Right"),
 	SND_SOC_DAPM_OUTPUT("HP Left"),
+
+	SND_SOC_DAPM_INPUT("Line-In Right"),
+	SND_SOC_DAPM_INPUT("Line-In Left"),
+	SND_SOC_DAPM_INPUT("FM-In Right"),
+	SND_SOC_DAPM_INPUT("FM-In Left"),
+	SND_SOC_DAPM_INPUT("Mic1-In"),
+	SND_SOC_DAPM_INPUT("Mic2-In"),
 };
 
+/* {sink, control, source} */
 static const struct snd_soc_dapm_route sun4i_codec_dapm_routes[] = {
 	/* Left DAC Routes */
 	{ "Left DAC", NULL, "DAC" },
@@ -490,9 +580,23 @@ static const struct snd_soc_dapm_route sun4i_codec_dapm_routes[] = {
 	{ "Pre-Amplifier Mute", "Switch", "Pre-Amplifier" },
 	{ "HP Right", NULL, "Pre-Amplifier Mute" },
 	{ "HP Left", NULL, "Pre-Amplifier Mute" },
+
+	/* Line-In, FM-In */
+	{ "Right Mixer", "Right Line-In Playback Switch", "Line-In Right" },
+	{ "Left Mixer", "Left Line-In Playback Switch", "Line-In Left" },
+	{ "Right Mixer", "Right FM-In Playback Switch", "FM-In Right" },
+	{ "Left Mixer", "Left FM-In Playback Switch", "FM-In Left" },
+
+	/* Mic1-In */
+	{ "Right Mixer", "Mic1-In Playback Switch", "Mic1-In" },
+	{ "Left Mixer", "Mic1-In Playback Switch", "Mic1-In" },
+
+	/* Mic2-In */
+	{ "Right Mixer", "Mic2-In Playback Switch", "Mic2-In" },
+	{ "Left Mixer", "Mic2-In Playback Switch", "Mic2-In" },
 };
 
-static struct snd_soc_codec_driver sun4i_codec_codec = {
+static const struct snd_soc_codec_driver sun4i_codec_codec = {
 	.controls		= sun4i_codec_widgets,
 	.num_controls		= ARRAY_SIZE(sun4i_codec_widgets),
 	.dapm_widgets		= sun4i_codec_dapm_widgets,
@@ -533,13 +637,6 @@ static struct snd_soc_dai_driver dummy_cpu_dai = {
 	},
 };
 
-static const struct regmap_config sun4i_codec_regmap_config = {
-	.reg_bits	= 32,
-	.reg_stride	= 4,
-	.val_bits	= 32,
-	.max_register	= SUN4I_CODEC_AC_MIC_PHONE_CAL,
-};
-
 static const struct of_device_id sun4i_codec_of_match[] = {
 	{ .compatible = "allwinner,sun4i-a10-codec" },
 	{ .compatible = "allwinner,sun7i-a20-codec" },
@@ -586,6 +683,56 @@ static struct snd_soc_card *sun4i_codec_create_card(struct device *dev)
 	return card;
 };
 
+/* sun7i-specific things: */
+/* MIC_PHONE_CAL register offsets and bit fields (A20 only) */
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL		(0x3c)
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PREG1      (29)
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PREG2      (26)
+/* note: no idea where the output pins for the following are. */
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PHONEOUTG  (5)
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PHONEOUTEN (4)
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PHONEOUTS3 (3)
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PHONEOUTS2 (2)
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PHONEOUTS1 (1)
+#define SUN7I_CODEC_AC_MIC_PHONE_CAL_PHONEOUTS0 (0)
+
+static DECLARE_TLV_DB_RANGE(sun7i_codec_micin_preamp_gain_scale,
+	0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
+	1, 7, TLV_DB_SCALE_ITEM(2400, 300, 0)
+);
+
+static const struct snd_kcontrol_new sun7i_codec_widgets[] = {
+	SUN4I_COMMON_CODEC_WIDGETS,
+	SOC_SINGLE_TLV("Mic1-In Boost Gain",
+		       SUN7I_CODEC_AC_MIC_PHONE_CAL,
+		       SUN7I_CODEC_AC_MIC_PHONE_CAL_PREG1,
+		       7,
+		       0,
+		       sun7i_codec_micin_preamp_gain_scale),
+	SOC_SINGLE_TLV("Mic2-In Boost Gain",
+		       SUN7I_CODEC_AC_MIC_PHONE_CAL,
+		       SUN7I_CODEC_AC_MIC_PHONE_CAL_PREG2,
+		       7,
+		       0,
+		       sun7i_codec_micin_preamp_gain_scale),
+};
+
+static const struct snd_soc_codec_driver sun7i_codec_codec = {
+	.controls		= sun7i_codec_widgets,
+	.num_controls		= ARRAY_SIZE(sun7i_codec_widgets),
+	.dapm_widgets		= sun4i_codec_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(sun4i_codec_dapm_widgets),
+	.dapm_routes		= sun4i_codec_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(sun4i_codec_dapm_routes),
+};
+static const struct regmap_config sun4i_codec_regmap_config = {
+	.reg_bits	= 32,
+	.reg_stride	= 4,
+	.val_bits	= 32,
+	.max_register	= SUN7I_CODEC_AC_MIC_PHONE_CAL,
+};
+/* end sun7i-specific things */
+
 static int sun4i_codec_probe(struct platform_device *pdev)
 {
 	struct snd_soc_card *card;
@@ -593,6 +740,7 @@ static int sun4i_codec_probe(struct platform_device *pdev)
 	struct resource *res;
 	void __iomem *base;
 	int ret;
+	const struct snd_soc_codec_driver* codec_codec;
 
 	scodec = devm_kzalloc(&pdev->dev, sizeof(*scodec), GFP_KERNEL);
 	if (!scodec)
@@ -638,7 +786,12 @@ static int sun4i_codec_probe(struct platform_device *pdev)
 	scodec->playback_dma_data.maxburst = 4;
 	scodec->playback_dma_data.addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
 
-	ret = snd_soc_register_codec(&pdev->dev, &sun4i_codec_codec,
+	if (of_device_is_compatible(pdev->dev.of_node, 
+				    "allwinner,sun7i-a20-codec"))
+		codec_codec = &sun7i_codec_codec;
+	else
+		codec_codec = &sun4i_codec_codec;
+	ret = snd_soc_register_codec(&pdev->dev, codec_codec,
 				     &sun4i_codec_dai, 1);
 	if (ret) {
 		dev_err(&pdev->dev, "Failed to register our codec\n");