ASoC: sun8i-codec-analog: split regmap code into separate driver

It will be reused by sun50i-codec-analog later.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

5 files changed, 119 insertions, 77 deletions

diff --git a/sound/soc/sunxi/Kconfig b/sound/soc/sunxi/Kconfig
index 22408bc2d6ec..83b770cdfdaa 100644
--- a/sound/soc/sunxi/Kconfig
+++ b/sound/soc/sunxi/Kconfig
@@ -23,7 +23,7 @@ config SND_SUN8I_CODEC
 config SND_SUN8I_CODEC_ANALOG
 	tristate "Allwinner sun8i Codec Analog Controls Support"
 	depends on MACH_SUN8I || (ARM64 && ARCH_SUNXI) || COMPILE_TEST
-	select REGMAP
+	select SND_SUN8I_ADDA_PR_REGMAP
 	help
 	  Say Y or M if you want to add support for the analog controls for
 	  the codec embedded in newer Allwinner SoCs.
@@ -45,4 +45,9 @@ config SND_SUN4I_SPDIF
 	help
 	  Say Y or M to add support for the S/PDIF audio block in the Allwinner
 	  A10 and affiliated SoCs.
+
+config SND_SUN8I_ADDA_PR_REGMAP
+	tristate
+	select REGMAP
+
 endmenu
diff --git a/sound/soc/sunxi/Makefile b/sound/soc/sunxi/Makefile
index 4a9ef67386ca..74b99d55cfca 100644
--- a/sound/soc/sunxi/Makefile
+++ b/sound/soc/sunxi/Makefile
@@ -4,3 +4,4 @@ obj-$(CONFIG_SND_SUN4I_I2S) += sun4i-i2s.o
 obj-$(CONFIG_SND_SUN4I_SPDIF) += sun4i-spdif.o
 obj-$(CONFIG_SND_SUN8I_CODEC_ANALOG) += sun8i-codec-analog.o
 obj-$(CONFIG_SND_SUN8I_CODEC) += sun8i-codec.o
+obj-$(CONFIG_SND_SUN8I_ADDA_PR_REGMAP) += sun8i-adda-pr-regmap.o
diff --git a/sound/soc/sunxi/sun8i-adda-pr-regmap.c b/sound/soc/sunxi/sun8i-adda-pr-regmap.c
new file mode 100644
index 000000000000..e68ce9d2884d
--- /dev/null
+++ b/sound/soc/sunxi/sun8i-adda-pr-regmap.c
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * This driver provides regmap to access to analog part of audio codec
+ * found on Allwinner A23, A31s, A33, H3 and A64 Socs
+ *
+ * Copyright 2016 Chen-Yu Tsai <wens@csie.org>
+ * Copyright (C) 2018 Vasily Khoruzhick <anarsoul@gmail.com>
+ */
+
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "sun8i-adda-pr-regmap.h"
+
+/* Analog control register access bits */
+#define ADDA_PR			0x0		/* PRCM base + 0x1c0 */
+#define ADDA_PR_RESET			BIT(28)
+#define ADDA_PR_WRITE			BIT(24)
+#define ADDA_PR_ADDR_SHIFT		16
+#define ADDA_PR_ADDR_MASK		GENMASK(4, 0)
+#define ADDA_PR_DATA_IN_SHIFT		8
+#define ADDA_PR_DATA_IN_MASK		GENMASK(7, 0)
+#define ADDA_PR_DATA_OUT_SHIFT		0
+#define ADDA_PR_DATA_OUT_MASK		GENMASK(7, 0)
+
+/* regmap access bits */
+static int adda_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+	void __iomem *base = (void __iomem *)context;
+	u32 tmp;
+
+	/* De-assert reset */
+	writel(readl(base) | ADDA_PR_RESET, base);
+
+	/* Clear write bit */
+	writel(readl(base) & ~ADDA_PR_WRITE, base);
+
+	/* Set register address */
+	tmp = readl(base);
+	tmp &= ~(ADDA_PR_ADDR_MASK << ADDA_PR_ADDR_SHIFT);
+	tmp |= (reg & ADDA_PR_ADDR_MASK) << ADDA_PR_ADDR_SHIFT;
+	writel(tmp, base);
+
+	/* Read back value */
+	*val = readl(base) & ADDA_PR_DATA_OUT_MASK;
+
+	return 0;
+}
+
+static int adda_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+	void __iomem *base = (void __iomem *)context;
+	u32 tmp;
+
+	/* De-assert reset */
+	writel(readl(base) | ADDA_PR_RESET, base);
+
+	/* Set register address */
+	tmp = readl(base);
+	tmp &= ~(ADDA_PR_ADDR_MASK << ADDA_PR_ADDR_SHIFT);
+	tmp |= (reg & ADDA_PR_ADDR_MASK) << ADDA_PR_ADDR_SHIFT;
+	writel(tmp, base);
+
+	/* Set data to write */
+	tmp = readl(base);
+	tmp &= ~(ADDA_PR_DATA_IN_MASK << ADDA_PR_DATA_IN_SHIFT);
+	tmp |= (val & ADDA_PR_DATA_IN_MASK) << ADDA_PR_DATA_IN_SHIFT;
+	writel(tmp, base);
+
+	/* Set write bit to signal a write */
+	writel(readl(base) | ADDA_PR_WRITE, base);
+
+	/* Clear write bit */
+	writel(readl(base) & ~ADDA_PR_WRITE, base);
+
+	return 0;
+}
+
+static const struct regmap_config adda_pr_regmap_cfg = {
+	.name		= "adda-pr",
+	.reg_bits	= 5,
+	.reg_stride	= 1,
+	.val_bits	= 8,
+	.reg_read	= adda_reg_read,
+	.reg_write	= adda_reg_write,
+	.fast_io	= true,
+	.max_register	= 31,
+};
+
+struct regmap *sun8i_adda_pr_regmap_init(struct device *dev,
+					 void __iomem *base)
+{
+	return devm_regmap_init(dev, NULL, base, &adda_pr_regmap_cfg);
+}
+EXPORT_SYMBOL_GPL(sun8i_adda_pr_regmap_init);
+
+MODULE_DESCRIPTION("Allwinner analog audio codec regmap driver");
+MODULE_AUTHOR("Vasily Khoruzhick <anarsoul@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:sunxi-adda-pr");
diff --git a/sound/soc/sunxi/sun8i-adda-pr-regmap.h b/sound/soc/sunxi/sun8i-adda-pr-regmap.h
new file mode 100644
index 000000000000..a5ae95dfebc1
--- /dev/null
+++ b/sound/soc/sunxi/sun8i-adda-pr-regmap.h
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2018 Vasily Khoruzhick <anarsoul@gmail.com>
+ */
+
+struct regmap *sun8i_adda_pr_regmap_init(struct device *dev,
+					 void __iomem *base);
diff --git a/sound/soc/sunxi/sun8i-codec-analog.c b/sound/soc/sunxi/sun8i-codec-analog.c
index 485e79f292c4..916a46bbc1c8 100644
--- a/sound/soc/sunxi/sun8i-codec-analog.c
+++ b/sound/soc/sunxi/sun8i-codec-analog.c
@@ -27,6 +27,8 @@
 #include <sound/soc-dapm.h>
 #include <sound/tlv.h>
 
+#include "sun8i-adda-pr-regmap.h"
+
 /* Codec analog control register offsets and bit fields */
 #define SUN8I_ADDA_HP_VOLC		0x00
 #define SUN8I_ADDA_HP_VOLC_PA_CLK_GATE		7
@@ -120,81 +122,6 @@
 #define SUN8I_ADDA_ADC_AP_EN_ADCLEN		6
 #define SUN8I_ADDA_ADC_AP_EN_ADCG		0
 
-/* Analog control register access bits */
-#define ADDA_PR			0x0		/* PRCM base + 0x1c0 */
-#define ADDA_PR_RESET			BIT(28)
-#define ADDA_PR_WRITE			BIT(24)
-#define ADDA_PR_ADDR_SHIFT		16
-#define ADDA_PR_ADDR_MASK		GENMASK(4, 0)
-#define ADDA_PR_DATA_IN_SHIFT		8
-#define ADDA_PR_DATA_IN_MASK		GENMASK(7, 0)
-#define ADDA_PR_DATA_OUT_SHIFT		0
-#define ADDA_PR_DATA_OUT_MASK		GENMASK(7, 0)
-
-/* regmap access bits */
-static int adda_reg_read(void *context, unsigned int reg, unsigned int *val)
-{
-	void __iomem *base = (void __iomem *)context;
-	u32 tmp;
-
-	/* De-assert reset */
-	writel(readl(base) | ADDA_PR_RESET, base);
-
-	/* Clear write bit */
-	writel(readl(base) & ~ADDA_PR_WRITE, base);
-
-	/* Set register address */
-	tmp = readl(base);
-	tmp &= ~(ADDA_PR_ADDR_MASK << ADDA_PR_ADDR_SHIFT);
-	tmp |= (reg & ADDA_PR_ADDR_MASK) << ADDA_PR_ADDR_SHIFT;
-	writel(tmp, base);
-
-	/* Read back value */
-	*val = readl(base) & ADDA_PR_DATA_OUT_MASK;
-
-	return 0;
-}
-
-static int adda_reg_write(void *context, unsigned int reg, unsigned int val)
-{
-	void __iomem *base = (void __iomem *)context;
-	u32 tmp;
-
-	/* De-assert reset */
-	writel(readl(base) | ADDA_PR_RESET, base);
-
-	/* Set register address */
-	tmp = readl(base);
-	tmp &= ~(ADDA_PR_ADDR_MASK << ADDA_PR_ADDR_SHIFT);
-	tmp |= (reg & ADDA_PR_ADDR_MASK) << ADDA_PR_ADDR_SHIFT;
-	writel(tmp, base);
-
-	/* Set data to write */
-	tmp = readl(base);
-	tmp &= ~(ADDA_PR_DATA_IN_MASK << ADDA_PR_DATA_IN_SHIFT);
-	tmp |= (val & ADDA_PR_DATA_IN_MASK) << ADDA_PR_DATA_IN_SHIFT;
-	writel(tmp, base);
-
-	/* Set write bit to signal a write */
-	writel(readl(base) | ADDA_PR_WRITE, base);
-
-	/* Clear write bit */
-	writel(readl(base) & ~ADDA_PR_WRITE, base);
-
-	return 0;
-}
-
-static const struct regmap_config adda_pr_regmap_cfg = {
-	.name		= "adda-pr",
-	.reg_bits	= 5,
-	.reg_stride	= 1,
-	.val_bits	= 8,
-	.reg_read	= adda_reg_read,
-	.reg_write	= adda_reg_write,
-	.fast_io	= true,
-	.max_register	= 24,
-};
-
 /* mixer controls */
 static const struct snd_kcontrol_new sun8i_codec_mixer_controls[] = {
 	SOC_DAPM_DOUBLE_R("DAC Playback Switch",
@@ -912,7 +839,7 @@ static int sun8i_codec_analog_probe(struct platform_device *pdev)
 		return PTR_ERR(base);
 	}
 
-	regmap = devm_regmap_init(&pdev->dev, NULL, base, &adda_pr_regmap_cfg);
+	regmap = sun8i_adda_pr_regmap_init(&pdev->dev, base);
 	if (IS_ERR(regmap)) {
 		dev_err(&pdev->dev, "Failed to create regmap\n");
 		return PTR_ERR(regmap);