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From:   codekipper@gmail.com
To:     mripard@kernel.org, wens@csie.org, linux-sunxi@googlegroups.com
Cc:     linux-arm-kernel@lists.infradead.org, lgirdwood@gmail.com,
        broonie@kernel.org, linux-kernel@vger.kernel.org,
        alsa-devel@alsa-project.org, be17068@iperbole.bo.it,
        Jernej Skrabec <jernej.skrabec@siol.net>,
        Marcus Cooper <codekipper@gmail.com>
Subject: [PATCH v6 7/7] ASoC: sun4i-i2s: Add support for H6 I2S
Date:   Wed, 16 Oct 2019 09:07:40 +0200
Message-Id: <20191016070740.121435-8-codekipper@gmail.com>
In-Reply-To: <20191016070740.121435-1-codekipper@gmail.com>
References: <20191016070740.121435-1-codekipper@gmail.com>
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From: Jernej Skrabec <jernej.skrabec@siol.net>

H6 I2S is very similar to that in H3, except it supports up to 16
channels.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Signed-off-by: Marcus Cooper <codekipper@gmail.com>
---
 sound/soc/sunxi/sun4i-i2s.c | 143 ++++++++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)

diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
index 63ae9da180f2..564b31788f29 100644
--- a/sound/soc/sunxi/sun4i-i2s.c
+++ b/sound/soc/sunxi/sun4i-i2s.c
@@ -126,6 +126,21 @@
 #define SUN8I_I2S_RX_CHAN_SEL_REG	0x54
 #define SUN8I_I2S_RX_CHAN_MAP_REG	0x58
 
+/* Defines required for sun50i-h6 support */
+#define SUN50I_H6_I2S_TX_CHAN_SEL_OFFSET_MASK	GENMASK(21, 20)
+#define SUN50I_H6_I2S_TX_CHAN_SEL_OFFSET(offset)	((offset) << 20)
+#define SUN50I_H6_I2S_TX_CHAN_SEL_MASK		GENMASK(19, 16)
+#define SUN50I_H6_I2S_TX_CHAN_SEL(chan)		((chan - 1) << 16)
+#define SUN50I_H6_I2S_TX_CHAN_EN_MASK		GENMASK(15, 0)
+#define SUN50I_H6_I2S_TX_CHAN_EN(num_chan)	(((1 << num_chan) - 1))
+
+#define SUN50I_H6_I2S_TX_CHAN_MAP0_REG	0x44
+#define SUN50I_H6_I2S_TX_CHAN_MAP1_REG	0x48
+
+#define SUN50I_H6_I2S_RX_CHAN_SEL_REG	0x64
+#define SUN50I_H6_I2S_RX_CHAN_MAP0_REG	0x68
+#define SUN50I_H6_I2S_RX_CHAN_MAP1_REG	0x6C
+
 struct sun4i_i2s;
 
 /**
@@ -484,6 +499,24 @@ static void sun8i_i2s_set_rxchanoffset(const struct sun4i_i2s *i2s)
 			   SUN8I_I2S_TX_CHAN_OFFSET(i2s->offset));
 }
 
+static void sun50i_h6_i2s_set_txchanoffset(const struct sun4i_i2s *i2s, int output)
+{
+	if (output >= 0 && output < 4)
+		regmap_update_bits(i2s->regmap,
+				   SUN8I_I2S_TX_CHAN_SEL_REG + (output * 4),
+				   SUN50I_H6_I2S_TX_CHAN_SEL_OFFSET_MASK,
+				   SUN50I_H6_I2S_TX_CHAN_SEL_OFFSET(i2s->offset));
+
+}
+
+static void sun50i_h6_i2s_set_rxchanoffset(const struct sun4i_i2s *i2s)
+{
+	regmap_update_bits(i2s->regmap,
+			   SUN50I_H6_I2S_RX_CHAN_SEL_REG,
+			   SUN50I_H6_I2S_TX_CHAN_SEL_OFFSET_MASK,
+			   SUN50I_H6_I2S_TX_CHAN_SEL_OFFSET(i2s->offset));
+}
+
 static void sun8i_i2s_set_txchanen(const struct sun4i_i2s *i2s, int output,
 				   int channel)
 {
@@ -502,6 +535,25 @@ static void sun8i_i2s_set_rxchanen(const struct sun4i_i2s *i2s, int channel)
 			   SUN8I_I2S_TX_CHAN_EN(channel));
 }
 
+
+static void sun50i_h6_i2s_set_txchanen(const struct sun4i_i2s *i2s, int output,
+				       int channel)
+{
+	if (output >= 0 && output < 4)
+		regmap_update_bits(i2s->regmap,
+				   SUN8I_I2S_TX_CHAN_SEL_REG + (output * 4),
+				   SUN50I_H6_I2S_TX_CHAN_EN_MASK,
+				   SUN50I_H6_I2S_TX_CHAN_EN(channel));
+}
+
+static void sun50i_h6_i2s_set_rxchanen(const struct sun4i_i2s *i2s, int channel)
+{
+	regmap_update_bits(i2s->regmap,
+			   SUN50I_H6_I2S_RX_CHAN_SEL_REG,
+			   SUN50I_H6_I2S_TX_CHAN_EN_MASK,
+			   SUN50I_H6_I2S_TX_CHAN_EN(channel));
+}
+
 static void sun4i_i2s_set_txchansel(const struct sun4i_i2s *i2s, int output,
 				    int channel)
 {
@@ -536,6 +588,24 @@ static void sun8i_i2s_set_rxchansel(const struct sun4i_i2s *i2s, int channel)
 			   SUN8I_I2S_TX_CHAN_SEL(channel));
 }
 
+static void sun50i_h6_i2s_set_txchansel(const struct sun4i_i2s *i2s, int output,
+				       int channel)
+{
+	if (output >= 0 && output < 4)
+		regmap_update_bits(i2s->regmap,
+				   SUN8I_I2S_TX_CHAN_SEL_REG + (output * 4),
+				   SUN50I_H6_I2S_TX_CHAN_SEL_MASK,
+				   SUN50I_H6_I2S_TX_CHAN_SEL(channel));
+}
+
+static void sun50i_h6_i2s_set_rxchansel(const struct sun4i_i2s *i2s, int channel)
+{
+	regmap_update_bits(i2s->regmap,
+			   SUN50I_H6_I2S_RX_CHAN_SEL_REG,
+			   SUN50I_H6_I2S_TX_CHAN_SEL_MASK,
+			   SUN50I_H6_I2S_TX_CHAN_SEL(channel));
+}
+
 static void sun4i_i2s_set_txchanmap(const struct sun4i_i2s *i2s, int output,
 				    int channel)
 {
@@ -561,6 +631,20 @@ static void sun8i_i2s_set_rxchanmap(const struct sun4i_i2s *i2s, int channel)
 	regmap_write(i2s->regmap, SUN8I_I2S_RX_CHAN_MAP_REG, channel);
 }
 
+static void sun50i_h6_i2s_set_txchanmap(const struct sun4i_i2s *i2s, int output,
+				       int channel)
+{
+	if (output >= 0 && output < 4)
+		regmap_write(i2s->regmap,
+			     SUN50I_H6_I2S_TX_CHAN_MAP1_REG + (output * 8),
+			     channel);
+}
+
+static void sun50i_h6_i2s_set_rxchanmap(const struct sun4i_i2s *i2s, int channel)
+{
+	regmap_write(i2s->regmap, SUN50I_H6_I2S_RX_CHAN_MAP1_REG, channel);
+}
+
 static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
 			       struct snd_pcm_hw_params *params,
 			       struct snd_soc_dai *dai)
@@ -1073,6 +1157,22 @@ static const struct reg_default sun8i_i2s_reg_defaults[] = {
 	{ SUN8I_I2S_RX_CHAN_MAP_REG, 0x00000000 },
 };
 
+static const struct reg_default sun50i_i2s_reg_defaults[] = {
+	{ SUN4I_I2S_CTRL_REG, 0x00060000 },
+	{ SUN4I_I2S_FMT0_REG, 0x00000033 },
+	{ SUN4I_I2S_FMT1_REG, 0x00000030 },
+	{ SUN4I_I2S_FIFO_CTRL_REG, 0x000400f0 },
+	{ SUN4I_I2S_DMA_INT_CTRL_REG, 0x00000000 },
+	{ SUN4I_I2S_CLK_DIV_REG, 0x00000000 },
+	{ SUN8I_I2S_CHAN_CFG_REG, 0x00000000 },
+	{ SUN8I_I2S_TX_CHAN_SEL_REG, 0x00000000 },
+	{ SUN50I_H6_I2S_TX_CHAN_MAP0_REG, 0x00000000 },
+	{ SUN50I_H6_I2S_TX_CHAN_MAP1_REG, 0x00000000 },
+	{ SUN50I_H6_I2S_RX_CHAN_SEL_REG, 0x00000000 },
+	{ SUN50I_H6_I2S_RX_CHAN_MAP0_REG, 0x00000000 },
+	{ SUN50I_H6_I2S_RX_CHAN_MAP1_REG, 0x00000000 },
+};
+
 static const struct regmap_config sun4i_i2s_regmap_config = {
 	.reg_bits	= 32,
 	.reg_stride	= 4,
@@ -1100,6 +1200,19 @@ static const struct regmap_config sun8i_i2s_regmap_config = {
 	.volatile_reg	= sun8i_i2s_volatile_reg,
 };
 
+static const struct regmap_config sun50i_i2s_regmap_config = {
+	.reg_bits	= 32,
+	.reg_stride	= 4,
+	.val_bits	= 32,
+	.max_register	= SUN50I_H6_I2S_RX_CHAN_MAP1_REG,
+	.cache_type	= REGCACHE_FLAT,
+	.reg_defaults	= sun50i_i2s_reg_defaults,
+	.num_reg_defaults	= ARRAY_SIZE(sun50i_i2s_reg_defaults),
+	.writeable_reg	= sun4i_i2s_wr_reg,
+	.readable_reg	= sun8i_i2s_rd_reg,
+	.volatile_reg	= sun8i_i2s_volatile_reg,
+};
+
 static int sun4i_i2s_runtime_resume(struct device *dev)
 {
 	struct sun4i_i2s *i2s = dev_get_drvdata(dev);
@@ -1282,6 +1395,32 @@ static const struct sun4i_i2s_quirks sun50i_a64_codec_i2s_quirks = {
 	.set_rxchanmap		= sun4i_i2s_set_rxchanmap,
 };
 
+static const struct sun4i_i2s_quirks sun50i_h6_i2s_quirks = {
+	.has_reset		= true,
+	.reg_offset_txdata	= SUN8I_I2S_FIFO_TX_REG,
+	.sun4i_i2s_regmap	= &sun50i_i2s_regmap_config,
+	.field_clkdiv_mclk_en	= REG_FIELD(SUN4I_I2S_CLK_DIV_REG, 8, 8),
+	.field_fmt_wss		= REG_FIELD(SUN4I_I2S_FMT0_REG, 0, 2),
+	.field_fmt_sr		= REG_FIELD(SUN4I_I2S_FMT0_REG, 4, 6),
+	.bclk_dividers		= sun8i_i2s_clk_div,
+	.num_bclk_dividers	= ARRAY_SIZE(sun8i_i2s_clk_div),
+	.mclk_dividers		= sun8i_i2s_clk_div,
+	.num_mclk_dividers	= ARRAY_SIZE(sun8i_i2s_clk_div),
+	.get_bclk_parent_rate	= sun8i_i2s_get_bclk_parent_rate,
+	.get_sr			= sun8i_i2s_get_sr_wss,
+	.get_wss		= sun8i_i2s_get_sr_wss,
+	.set_chan_cfg		= sun8i_i2s_set_chan_cfg,
+	.set_fmt		= sun8i_i2s_set_soc_fmt,
+	.set_txchanoffset	= sun50i_h6_i2s_set_txchanoffset,
+	.set_rxchanoffset	= sun50i_h6_i2s_set_rxchanoffset,
+	.set_txchanen		= sun50i_h6_i2s_set_txchanen,
+	.set_rxchanen		= sun50i_h6_i2s_set_rxchanen,
+	.set_txchansel		= sun50i_h6_i2s_set_txchansel,
+	.set_rxchansel		= sun50i_h6_i2s_set_rxchansel,
+	.set_txchanmap		= sun50i_h6_i2s_set_txchanmap,
+	.set_rxchanmap		= sun50i_h6_i2s_set_rxchanmap,
+};
+
 static int sun4i_i2s_init_regmap_fields(struct device *dev,
 					struct sun4i_i2s *i2s)
 {
@@ -1451,6 +1590,10 @@ static const struct of_device_id sun4i_i2s_match[] = {
 		.compatible = "allwinner,sun50i-a64-codec-i2s",
 		.data = &sun50i_a64_codec_i2s_quirks,
 	},
+	{
+		.compatible = "allwinner,sun50i-h6-i2s",
+		.data = &sun50i_h6_i2s_quirks,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, sun4i_i2s_match);
-- 
2.23.0