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Subject[PATCH v2 06/14] ASoC: sun4i-codec: Add support for A31 playback through headphone output
Date
The A31 has a similar codec to the A10/A20. The PCM parts are very
similar, with different register offsets. The analog paths are very
different. There are more inputs and outputs. The ADC mux has been
replaced with a proper mixer.

This patch adds support for the basic playback path of the A31 codec,
from the DAC to the headphones. Headphone detection, microphone,
signaling, other inputs/outputs and capture will be added later.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
.../devicetree/bindings/sound/sun4i-codec.txt | 22 +-
sound/soc/sunxi/sun4i-codec.c | 271 ++++++++++++++++++++-
2 files changed, 287 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/sound/sun4i-codec.txt b/Documentation/devicetree/bindings/sound/sun4i-codec.txt
index 0dce690f78f5..bf480e9683a3 100644
--- a/Documentation/devicetree/bindings/sound/sun4i-codec.txt
+++ b/Documentation/devicetree/bindings/sound/sun4i-codec.txt
@@ -1,8 +1,10 @@
* Allwinner A10 Codec

Required properties:
-- compatible: must be either "allwinner,sun4i-a10-codec" or
- "allwinner,sun7i-a20-codec"
+- compatible: must be one of the following compatibles:
+ - "allwinner,sun4i-a10-codec"
+ - "allwinner,sun6i-a31-codec"
+ - "allwinner,sun7i-a20-codec"
- reg: must contain the registers location and length
- interrupts: must contain the codec interrupt
- dmas: DMA channels for tx and rx dma. See the DMA client binding,
@@ -17,6 +19,10 @@ Required properties:
Optional properties:
- allwinner,pa-gpios: gpio to enable external amplifier

+Required properties for the following compatibles:
+ - "allwinner,sun6i-a31-codec"
+- resets: phandle to the reset control for this device
+
Example:
codec: codec@01c22c00 {
#sound-dai-cells = <0>;
@@ -28,3 +34,15 @@ codec: codec@01c22c00 {
dmas = <&dma 0 19>, <&dma 0 19>;
dma-names = "rx", "tx";
};
+
+codec: codec@01c22c00 {
+ #sound-dai-cells = <0>;
+ compatible = "allwinner,sun6i-a31-codec";
+ reg = <0x01c22c00 0x98>;
+ interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&ccu CLK_APB1_CODEC>, <&ccu CLK_CODEC>;
+ clock-names = "apb", "codec";
+ resets = <&ccu RST_APB1_CODEC>;
+ dmas = <&dma 15>, <&dma 15>;
+ dma-names = "rx", "tx";
+};
diff --git a/sound/soc/sunxi/sun4i-codec.c b/sound/soc/sunxi/sun4i-codec.c
index e502966abf8e..12b9e08a3e64 100644
--- a/sound/soc/sunxi/sun4i-codec.c
+++ b/sound/soc/sunxi/sun4i-codec.c
@@ -110,6 +110,109 @@
/* Microphone controls (sun7i only) */
#define SUN7I_CODEC_AC_MIC_PHONE_CAL (0x3c)

+/*
+ * sun6i specific registers
+ *
+ * sun6i shares the same digital control and FIFO registers as sun4i,
+ * but only the DAC digital controls are at the same offset. The others
+ * have been moved around to accommodate extra analog controls.
+ */
+
+/* Codec DAC digital controls and FIFO registers */
+#define SUN6I_CODEC_ADC_FIFOC (0x10)
+#define SUN6I_CODEC_ADC_FIFOC_EN_AD (28)
+#define SUN6I_CODEC_ADC_FIFOS (0x14)
+#define SUN6I_CODEC_ADC_RXDATA (0x18)
+
+/* Output mixer and gain controls */
+#define SUN6I_CODEC_OM_DACA_CTRL (0x20)
+#define SUN6I_CODEC_OM_DACA_CTRL_DACAREN (31)
+#define SUN6I_CODEC_OM_DACA_CTRL_DACALEN (30)
+#define SUN6I_CODEC_OM_DACA_CTRL_RMIXEN (29)
+#define SUN6I_CODEC_OM_DACA_CTRL_LMIXEN (28)
+#define SUN6I_CODEC_OM_DACA_CTRL_RMIX_MIC1 (23)
+#define SUN6I_CODEC_OM_DACA_CTRL_RMIX_MIC2 (22)
+#define SUN6I_CODEC_OM_DACA_CTRL_RMIX_PHONE (21)
+#define SUN6I_CODEC_OM_DACA_CTRL_RMIX_PHONEP (20)
+#define SUN6I_CODEC_OM_DACA_CTRL_RMIX_LINEINR (19)
+#define SUN6I_CODEC_OM_DACA_CTRL_RMIX_DACR (18)
+#define SUN6I_CODEC_OM_DACA_CTRL_RMIX_DACL (17)
+#define SUN6I_CODEC_OM_DACA_CTRL_LMIX_MIC1 (16)
+#define SUN6I_CODEC_OM_DACA_CTRL_LMIX_MIC2 (15)
+#define SUN6I_CODEC_OM_DACA_CTRL_LMIX_PHONE (14)
+#define SUN6I_CODEC_OM_DACA_CTRL_LMIX_PHONEN (13)
+#define SUN6I_CODEC_OM_DACA_CTRL_LMIX_LINEINL (12)
+#define SUN6I_CODEC_OM_DACA_CTRL_LMIX_DACL (11)
+#define SUN6I_CODEC_OM_DACA_CTRL_LMIX_DACR (10)
+#define SUN6I_CODEC_OM_DACA_CTRL_RHPIS (9)
+#define SUN6I_CODEC_OM_DACA_CTRL_LHPIS (8)
+#define SUN6I_CODEC_OM_DACA_CTRL_RHPPAMUTE (7)
+#define SUN6I_CODEC_OM_DACA_CTRL_LHPPAMUTE (6)
+#define SUN6I_CODEC_OM_DACA_CTRL_HPVOL (0)
+#define SUN6I_CODEC_OM_PA_CTRL (0x24)
+#define SUN6I_CODEC_OM_PA_CTRL_HPPAEN (31)
+#define SUN6I_CODEC_OM_PA_CTRL_HPCOM_CTL (29)
+#define SUN6I_CODEC_OM_PA_CTRL_COMPTEN (28)
+#define SUN6I_CODEC_OM_PA_CTRL_MIC1G (15)
+#define SUN6I_CODEC_OM_PA_CTRL_MIC2G (12)
+#define SUN6I_CODEC_OM_PA_CTRL_LINEING (9)
+#define SUN6I_CODEC_OM_PA_CTRL_PHONEG (6)
+#define SUN6I_CODEC_OM_PA_CTRL_PHONEPG (3)
+#define SUN6I_CODEC_OM_PA_CTRL_PHONENG (0)
+
+/* Microphone, line out and phone out controls */
+#define SUN6I_CODEC_MIC_CTRL (0x28)
+#define SUN6I_CODEC_MIC_CTRL_HBIASEN (31)
+#define SUN6I_CODEC_MIC_CTRL_MBIASEN (30)
+#define SUN6I_CODEC_MIC_CTRL_MIC1AMPEN (28)
+#define SUN6I_CODEC_MIC_CTRL_MIC1BOOST (25)
+#define SUN6I_CODEC_MIC_CTRL_MIC2AMPEN (24)
+#define SUN6I_CODEC_MIC_CTRL_MIC2BOOST (21)
+#define SUN6I_CODEC_MIC_CTRL_MIC2SLT (20)
+#define SUN6I_CODEC_MIC_CTRL_LINEOUTLEN (19)
+#define SUN6I_CODEC_MIC_CTRL_LINEOUTREN (18)
+#define SUN6I_CODEC_MIC_CTRL_LINEOUTLSRC (17)
+#define SUN6I_CODEC_MIC_CTRL_LINEOUTRSRC (16)
+#define SUN6I_CODEC_MIC_CTRL_LINEOUTVC (11)
+#define SUN6I_CODEC_MIC_CTRL_PHONEPREG (8)
+
+/* ADC mixer controls */
+#define SUN6I_CODEC_ADC_ACTL (0x2c)
+#define SUN6I_CODEC_ADC_ACTL_ADCREN (31)
+#define SUN6I_CODEC_ADC_ACTL_ADCLEN (30)
+#define SUN6I_CODEC_ADC_ACTL_ADCRG (27)
+#define SUN6I_CODEC_ADC_ACTL_ADCLG (24)
+#define SUN6I_CODEC_ADC_ACTL_RADCMIX_MIC1 (13)
+#define SUN6I_CODEC_ADC_ACTL_RADCMIX_MIC2 (12)
+#define SUN6I_CODEC_ADC_ACTL_RADCMIX_PHONE (11)
+#define SUN6I_CODEC_ADC_ACTL_RADCMIX_PHONEP (10)
+#define SUN6I_CODEC_ADC_ACTL_RADCMIX_LINEINR (9)
+#define SUN6I_CODEC_ADC_ACTL_RADCMIX_OMIXR (8)
+#define SUN6I_CODEC_ADC_ACTL_RADCMIX_OMIXL (7)
+#define SUN6I_CODEC_ADC_ACTL_LADCMIX_MIC1 (6)
+#define SUN6I_CODEC_ADC_ACTL_LADCMIX_MIC2 (5)
+#define SUN6I_CODEC_ADC_ACTL_LADCMIX_PHONE (4)
+#define SUN6I_CODEC_ADC_ACTL_LADCMIX_PHONEN (3)
+#define SUN6I_CODEC_ADC_ACTL_LADCMIX_LINEINL (2)
+#define SUN6I_CODEC_ADC_ACTL_LADCMIX_OMIXL (1)
+#define SUN6I_CODEC_ADC_ACTL_LADCMIX_OMIXR (0)
+
+/* Analog performance tuning controls */
+#define SUN6I_CODEC_ADDA_TUNE (0x30)
+
+/* Calibration controls */
+#define SUN6I_CODEC_CALIBRATION (0x34)
+
+/* FIFO counters */
+#define SUN6I_CODEC_DAC_TXCNT (0x40)
+#define SUN6I_CODEC_ADC_RXCNT (0x44)
+
+/* headset jack detection and button support registers */
+#define SUN6I_CODEC_HMIC_CTL (0x50)
+#define SUN6I_CODEC_HMIC_DATA (0x54)
+
+/* TODO sun6i DAP (Digital Audio Processing) bits */
+
struct sun4i_codec {
struct device *dev;
struct regmap *regmap;
@@ -216,9 +319,14 @@ static int sun4i_codec_prepare_capture(struct snd_pcm_substream *substream,
* Allwinner's code mentions that it is related
* related to microphone gain
*/
- regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_ACTL,
- 0x3 << 25,
- 0x1 << 25);
+ if (of_device_is_compatible(scodec->dev->of_node,
+ "allwinner,sun4i-a10-codec") ||
+ of_device_is_compatible(scodec->dev->of_node,
+ "allwinner,sun7i-a20-codec")) {
+ regmap_update_bits(scodec->regmap, SUN4I_CODEC_ADC_ACTL,
+ 0x3 << 25,
+ 0x1 << 25);
+ }

if (of_device_is_compatible(scodec->dev->of_node,
"allwinner,sun7i-a20-codec"))
@@ -518,7 +626,7 @@ static struct snd_soc_dai_driver sun4i_codec_dai = {
},
};

-/*** Codec ***/
+/*** sun4i Codec ***/
static const struct snd_kcontrol_new sun4i_codec_pa_mute =
SOC_DAPM_SINGLE("Switch", SUN4I_CODEC_DAC_ACTL,
SUN4I_CODEC_DAC_ACTL_PA_MUTE, 1, 0);
@@ -654,6 +762,122 @@ static struct snd_soc_codec_driver sun4i_codec_codec = {
},
};

+/*** sun6i Codec ***/
+
+/* mixer controls */
+static const struct snd_kcontrol_new sun6i_codec_mixer_controls[] = {
+ SOC_DAPM_DOUBLE("DAC Playback Switch",
+ SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_LMIX_DACL,
+ SUN6I_CODEC_OM_DACA_CTRL_RMIX_DACR, 1, 0),
+ SOC_DAPM_DOUBLE("DAC Reversed Playback Switch",
+ SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_LMIX_DACR,
+ SUN6I_CODEC_OM_DACA_CTRL_RMIX_DACL, 1, 0),
+};
+
+/* headphone controls */
+static const char * const sun6i_codec_hp_src_enum_text[] = {
+ "DAC", "Mixer",
+};
+
+static SOC_ENUM_DOUBLE_DECL(sun6i_codec_hp_src_enum,
+ SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_LHPIS,
+ SUN6I_CODEC_OM_DACA_CTRL_RHPIS,
+ sun6i_codec_hp_src_enum_text);
+
+static const struct snd_kcontrol_new sun6i_codec_hp_src[] = {
+ SOC_DAPM_ENUM("Headphone Source Playback Route",
+ sun6i_codec_hp_src_enum),
+};
+
+/* volume / mute controls */
+static const DECLARE_TLV_DB_SCALE(sun6i_codec_dvol_scale, -7308, 116, 0);
+static const DECLARE_TLV_DB_SCALE(sun6i_codec_hp_vol_scale, -6300, 100, 1);
+
+static const struct snd_kcontrol_new sun6i_codec_codec_widgets[] = {
+ SOC_SINGLE_TLV("DAC Playback Volume", SUN4I_CODEC_DAC_DPC,
+ SUN4I_CODEC_DAC_DPC_DVOL, 0x3f, 1,
+ sun6i_codec_dvol_scale),
+ SOC_SINGLE_TLV("Headphone Playback Volume",
+ SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_HPVOL, 0x3f, 0,
+ sun6i_codec_hp_vol_scale),
+ SOC_DOUBLE("Headphone Playback Switch",
+ SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_LHPPAMUTE,
+ SUN6I_CODEC_OM_DACA_CTRL_RHPPAMUTE, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget sun6i_codec_codec_dapm_widgets[] = {
+ /* Digital parts of the DACs */
+ SND_SOC_DAPM_SUPPLY("DAC Enable", SUN4I_CODEC_DAC_DPC,
+ SUN4I_CODEC_DAC_DPC_EN_DA, 0,
+ NULL, 0),
+
+ /* Analog parts of the DACs */
+ SND_SOC_DAPM_DAC("Left DAC", "Codec Playback",
+ SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_DACALEN, 0),
+ SND_SOC_DAPM_DAC("Right DAC", "Codec Playback",
+ SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_DACAREN, 0),
+
+ /* Mixers */
+ SOC_MIXER_ARRAY("Left Mixer", SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_LMIXEN, 0,
+ sun6i_codec_mixer_controls),
+ SOC_MIXER_ARRAY("Right Mixer", SUN6I_CODEC_OM_DACA_CTRL,
+ SUN6I_CODEC_OM_DACA_CTRL_RMIXEN, 0,
+ sun6i_codec_mixer_controls),
+
+ /* Headphone output path */
+ SND_SOC_DAPM_MUX("Headphone Source Playback Route",
+ SND_SOC_NOPM, 0, 0, sun6i_codec_hp_src),
+ SND_SOC_DAPM_OUT_DRV("Headphone Amp", SUN6I_CODEC_OM_PA_CTRL,
+ SUN6I_CODEC_OM_PA_CTRL_HPPAEN, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("HPCOM Protection", SUN6I_CODEC_OM_PA_CTRL,
+ SUN6I_CODEC_OM_PA_CTRL_COMPTEN, 0, NULL, 0),
+ SND_SOC_DAPM_REG(snd_soc_dapm_supply, "HPCOM", SUN6I_CODEC_OM_PA_CTRL,
+ SUN6I_CODEC_OM_PA_CTRL_HPCOM_CTL, 0x3, 0x3, 0),
+ SND_SOC_DAPM_OUTPUT("HP"),
+};
+
+static const struct snd_soc_dapm_route sun6i_codec_codec_dapm_routes[] = {
+ /* DAC Routes */
+ { "Left DAC", NULL, "DAC Enable" },
+ { "Right DAC", NULL, "DAC Enable" },
+
+ /* Left Mixer Routes */
+ { "Left Mixer", "DAC Playback Switch", "Left DAC" },
+ { "Left Mixer", "DAC Reversed Playback Switch", "Right DAC" },
+
+ /* Right Mixer Routes */
+ { "Right Mixer", "DAC Playback Switch", "Right DAC" },
+ { "Right Mixer", "DAC Reversed Playback Switch", "Left DAC" },
+
+ /* Headphone Routes */
+ { "Headphone Source Playback Route", "DAC", "Left DAC" },
+ { "Headphone Source Playback Route", "DAC", "Right DAC" },
+ { "Headphone Source Playback Route", "Mixer", "Left Mixer" },
+ { "Headphone Source Playback Route", "Mixer", "Right Mixer" },
+ { "Headphone Amp", NULL, "Headphone Source Playback Route" },
+ { "HP", NULL, "Headphone Amp" },
+ { "HPCOM", NULL, "HPCOM Protection" },
+};
+
+static struct snd_soc_codec_driver sun6i_codec_codec = {
+ .component_driver = {
+ .controls = sun6i_codec_codec_widgets,
+ .num_controls = ARRAY_SIZE(sun6i_codec_codec_widgets),
+ .dapm_widgets = sun6i_codec_codec_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(sun6i_codec_codec_dapm_widgets),
+ .dapm_routes = sun6i_codec_codec_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(sun6i_codec_codec_dapm_routes),
+ },
+};
+
static const struct snd_soc_component_driver sun4i_codec_component = {
.name = "sun4i-codec",
};
@@ -758,6 +982,24 @@ static struct snd_soc_card *sun4i_codec_create_card(struct device *dev)
return card;
};

+static struct snd_soc_card *sun6i_codec_create_card(struct device *dev)
+{
+ struct snd_soc_card *card;
+
+ card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
+ if (!card)
+ return ERR_PTR(-ENOMEM);
+
+ card->dai_link = sun4i_codec_create_link(dev, &card->num_links);
+ if (!card->dai_link)
+ return ERR_PTR(-ENOMEM);
+
+ card->dev = dev;
+ card->name = "A31 Audio Codec";
+
+ return card;
+};
+
static const struct regmap_config sun4i_codec_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
@@ -765,6 +1007,13 @@ static const struct regmap_config sun4i_codec_regmap_config = {
.max_register = SUN4I_CODEC_ADC_RXCNT,
};

+static const struct regmap_config sun6i_codec_regmap_config = {
+ .reg_bits = 32,
+ .reg_stride = 4,
+ .val_bits = 32,
+ .max_register = SUN6I_CODEC_HMIC_DATA,
+};
+
static const struct regmap_config sun7i_codec_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
@@ -791,6 +1040,16 @@ static const struct sun4i_codec_quirks sun4i_codec_quirks = {
.reg_adc_rxdata = SUN4I_CODEC_ADC_RXDATA,
};

+static const struct sun4i_codec_quirks sun6i_a31_codec_quirks = {
+ .regmap_config = &sun6i_codec_regmap_config,
+ .codec = &sun6i_codec_codec,
+ .create_card = sun6i_codec_create_card,
+ .reg_adc_fifoc = REG_FIELD(SUN6I_CODEC_ADC_FIFOC, 0, 31),
+ .reg_dac_txdata = SUN4I_CODEC_DAC_TXDATA,
+ .reg_adc_rxdata = SUN6I_CODEC_ADC_RXDATA,
+ .has_reset = true,
+};
+
static const struct sun4i_codec_quirks sun7i_codec_quirks = {
.regmap_config = &sun7i_codec_regmap_config,
.codec = &sun4i_codec_codec,
@@ -806,6 +1065,10 @@ static const struct of_device_id sun4i_codec_of_match[] = {
.data = &sun4i_codec_quirks,
},
{
+ .compatible = "allwinner,sun6i-a31-codec",
+ .data = &sun6i_a31_codec_quirks,
+ },
+ {
.compatible = "allwinner,sun7i-a20-codec",
.data = &sun7i_codec_quirks,
},
--
2.10.2
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