ASoC: tlv320aic32x4: Model PLL in CCF

Model and manage the on-board PLL as a component in the Core
Clock Framework.  This should allow us to do some more complex
clock management and power control.  Also, some of the
on-board chip clocks can be exposed to the outside, and this
change will make those clocks easier to consume by other
parts of the kernel.
Signed-off-by: Annaliese McDermond <nh6z@nh6z.net>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/Kconfig

@@ -1105,6 +1105,7 @@ config SND_SOC_TLV320AIC31XX
 
 config SND_SOC_TLV320AIC32X4
 	tristate
+	depends on COMMON_CLK
 
 config SND_SOC_TLV320AIC32X4_I2C
 	tristate "Texas Instruments TLV320AIC32x4 audio CODECs - I2C"

sound/soc/codecs/Makefile

@@ -193,7 +193,7 @@ snd-soc-tlv320aic23-i2c-objs := tlv320aic23-i2c.o
 snd-soc-tlv320aic23-spi-objs := tlv320aic23-spi.o
 snd-soc-tlv320aic26-objs := tlv320aic26.o
 snd-soc-tlv320aic31xx-objs := tlv320aic31xx.o
-snd-soc-tlv320aic32x4-objs := tlv320aic32x4.o
+snd-soc-tlv320aic32x4-objs := tlv320aic32x4.o tlv320aic32x4-clk.o
 snd-soc-tlv320aic32x4-i2c-objs := tlv320aic32x4-i2c.o
 snd-soc-tlv320aic32x4-spi-objs := tlv320aic32x4-spi.o
 snd-soc-tlv320aic3x-objs := tlv320aic3x.o

sound/soc/codecs/tlv320aic32x4-clk.c

+/* SPDX-License-Identifier: GPL-2.0
+ *
+ * Clock Tree for the Texas Instruments TLV320AIC32x4
+ *
+ * Copyright 2019 Annaliese McDermond
+ *
+ * Author: Annaliese McDermond <nh6z@nh6z.net>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/clkdev.h>
+#include <linux/regmap.h>
+#include <linux/device.h>
+
+#include "tlv320aic32x4.h"
+
+#define to_clk_aic32x4(_hw) container_of(_hw, struct clk_aic32x4, hw)
+struct clk_aic32x4 {
+	struct clk_hw hw;
+	struct device *dev;
+	struct regmap *regmap;
+	unsigned int reg;
+};
+
+/*
+ * struct clk_aic32x4_pll_muldiv - Multiplier/divider settings
+ * @p:		Divider
+ * @r:		first multiplier
+ * @j:		integer part of second multiplier
+ * @d:		decimal part of second multiplier
+ */
+struct clk_aic32x4_pll_muldiv {
+	u8 p;
+	u16 r;
+	u8 j;
+	u16 d;
+};
+
+struct aic32x4_clkdesc {
+	const char *name;
+	const char * const *parent_names;
+	unsigned int num_parents;
+	const struct clk_ops *ops;
+	unsigned int reg;
+};
+
+static int clk_aic32x4_pll_prepare(struct clk_hw *hw)
+{
+	struct clk_aic32x4 *pll = to_clk_aic32x4(hw);
+
+	return regmap_update_bits(pll->regmap, AIC32X4_PLLPR,
+				AIC32X4_PLLEN, AIC32X4_PLLEN);
+}
+
+static void clk_aic32x4_pll_unprepare(struct clk_hw *hw)
+{
+	struct clk_aic32x4 *pll = to_clk_aic32x4(hw);
+
+	regmap_update_bits(pll->regmap, AIC32X4_PLLPR,
+				AIC32X4_PLLEN, 0);
+}
+
+static int clk_aic32x4_pll_is_prepared(struct clk_hw *hw)
+{
+	struct clk_aic32x4 *pll = to_clk_aic32x4(hw);
+
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(pll->regmap, AIC32X4_PLLPR, &val);
+	if (ret < 0)
+		return ret;
+
+	return !!(val & AIC32X4_PLLEN);
+}
+
+static int clk_aic32x4_pll_get_muldiv(struct clk_aic32x4 *pll,
+			struct clk_aic32x4_pll_muldiv *settings)
+{
+	/*	Change to use regmap_bulk_read? */
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(pll->regmap, AIC32X4_PLLPR, &val);
+	if (ret)
+		return ret;
+	settings->r = val & AIC32X4_PLL_R_MASK;
+	settings->p = (val & AIC32X4_PLL_P_MASK) >> AIC32X4_PLL_P_SHIFT;
+
+	ret = regmap_read(pll->regmap, AIC32X4_PLLJ, &val);
+	if (ret < 0)
+		return ret;
+	settings->j = val;
+
+	ret = regmap_read(pll->regmap, AIC32X4_PLLDMSB, &val);
+	if (ret < 0)
+		return ret;
+	settings->d = val << 8;
+
+	ret = regmap_read(pll->regmap, AIC32X4_PLLDLSB,	 &val);
+	if (ret < 0)
+		return ret;
+	settings->d |= val;
+
+	return 0;
+}
+
+static int clk_aic32x4_pll_set_muldiv(struct clk_aic32x4 *pll,
+			struct clk_aic32x4_pll_muldiv *settings)
+{
+	int ret;
+	/*	Change to use regmap_bulk_write for some if not all? */
+
+	ret = regmap_update_bits(pll->regmap, AIC32X4_PLLPR,
+				AIC32X4_PLL_R_MASK, settings->r);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_update_bits(pll->regmap, AIC32X4_PLLPR,
+				AIC32X4_PLL_P_MASK,
+				settings->p << AIC32X4_PLL_P_SHIFT);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_write(pll->regmap, AIC32X4_PLLJ, settings->j);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_write(pll->regmap, AIC32X4_PLLDMSB, (settings->d >> 8));
+	if (ret < 0)
+		return ret;
+	ret = regmap_write(pll->regmap, AIC32X4_PLLDLSB, (settings->d & 0xff));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static unsigned long clk_aic32x4_pll_calc_rate(
+			struct clk_aic32x4_pll_muldiv *settings,
+			unsigned long parent_rate)
+{
+	u64 rate;
+	/*
+	 * We scale j by 10000 to account for the decimal part of P and divide
+	 * it back out later.
+	 */
+	rate = (u64) parent_rate * settings->r *
+				((settings->j * 10000) + settings->d);
+
+	return (unsigned long) DIV_ROUND_UP_ULL(rate, settings->p * 10000);
+}
+
+static int clk_aic32x4_pll_calc_muldiv(struct clk_aic32x4_pll_muldiv *settings,
+			unsigned long rate, unsigned long parent_rate)
+{
+	u64 multiplier;
+
+	settings->p = parent_rate / AIC32X4_MAX_PLL_CLKIN + 1;
+	if (settings->p > 8)
+		return -1;
+
+	/*
+	 * We scale this figure by 10000 so that we can get the decimal part
+	 * of the multiplier.	This is because we can't do floating point
+	 * math in the kernel.
+	 */
+	 multiplier = (u64) rate * settings->p * 10000;
+	 do_div(multiplier, parent_rate);
+
+	/*
+	 * J can't be over 64, so R can scale this.
+	 * R can't be greater than 4.
+	 */
+	settings->r = ((u32) multiplier / 640000) + 1;
+	if (settings->r > 4)
+		return -1;
+	do_div(multiplier, settings->r);
+
+	/*
+	 * J can't be < 1.
+	 */
+	if (multiplier < 10000)
+		return -1;
+
+	/* Figure out the integer part, J, and the fractional part, D. */
+	settings->j = (u32) multiplier / 10000;
+	settings->d = (u32) multiplier % 10000;
+
+	return 0;
+}
+
+static unsigned long clk_aic32x4_pll_recalc_rate(struct clk_hw *hw,
+			unsigned long parent_rate)
+{
+	struct clk_aic32x4 *pll = to_clk_aic32x4(hw);
+	struct clk_aic32x4_pll_muldiv settings;
+	int ret;
+
+	ret =  clk_aic32x4_pll_get_muldiv(pll, &settings);
+	if (ret < 0)
+		return 0;
+
+	return clk_aic32x4_pll_calc_rate(&settings, parent_rate);
+}
+
+static long clk_aic32x4_pll_round_rate(struct clk_hw *hw,
+			unsigned long rate,
+			unsigned long *parent_rate)
+{
+	struct clk_aic32x4_pll_muldiv settings;
+	int ret;
+
+	ret = clk_aic32x4_pll_calc_muldiv(&settings, rate, *parent_rate);
+	if (ret < 0)
+		return 0;
+
+	return clk_aic32x4_pll_calc_rate(&settings, *parent_rate);
+}
+
+static int clk_aic32x4_pll_set_rate(struct clk_hw *hw,
+			unsigned long rate,
+			unsigned long parent_rate)
+{
+	struct clk_aic32x4 *pll = to_clk_aic32x4(hw);
+	struct clk_aic32x4_pll_muldiv settings;
+	int ret;
+
+	ret = clk_aic32x4_pll_calc_muldiv(&settings, rate, parent_rate);
+	if (ret < 0)
+		return -EINVAL;
+
+	return clk_aic32x4_pll_set_muldiv(pll, &settings);
+}
+
+static int clk_aic32x4_pll_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct clk_aic32x4 *pll = to_clk_aic32x4(hw);
+
+	return regmap_update_bits(pll->regmap,
+				AIC32X4_CLKMUX,
+				AIC32X4_PLL_CLKIN_MASK,
+				index << AIC32X4_PLL_CLKIN_SHIFT);
+}
+
+static u8 clk_aic32x4_pll_get_parent(struct clk_hw *hw)
+{
+	struct clk_aic32x4 *pll = to_clk_aic32x4(hw);
+	unsigned int val;
+
+	regmap_read(pll->regmap, AIC32X4_PLLPR, &val);
+
+	return (val & AIC32X4_PLL_CLKIN_MASK) >> AIC32X4_PLL_CLKIN_SHIFT;
+}
+
+
+static const struct clk_ops aic32x4_pll_ops = {
+	.prepare = clk_aic32x4_pll_prepare,
+	.unprepare = clk_aic32x4_pll_unprepare,
+	.is_prepared = clk_aic32x4_pll_is_prepared,
+	.recalc_rate = clk_aic32x4_pll_recalc_rate,
+	.round_rate = clk_aic32x4_pll_round_rate,
+	.set_rate = clk_aic32x4_pll_set_rate,
+	.set_parent = clk_aic32x4_pll_set_parent,
+	.get_parent = clk_aic32x4_pll_get_parent,
+};
+
+static struct aic32x4_clkdesc aic32x4_clkdesc_array[] = {
+	{
+		.name = "pll",
+		.parent_names =
+			(const char* []) { "mclk", "bclk", "gpio", "din" },
+		.num_parents = 4,
+		.ops = &aic32x4_pll_ops,
+		.reg = 0,
+	},
+};
+
+static struct clk *aic32x4_register_clk(struct device *dev,
+			struct aic32x4_clkdesc *desc)
+{
+	struct clk_init_data init;
+	struct clk_aic32x4 *priv;
+	const char *devname = dev_name(dev);
+
+	init.ops = desc->ops;
+	init.name = desc->name;
+	init.parent_names = desc->parent_names;
+	init.num_parents = desc->num_parents;
+	init.flags = 0;
+
+	priv = devm_kzalloc(dev, sizeof(struct clk_aic32x4), GFP_KERNEL);
+	if (priv == NULL)
+		return (struct clk *) -ENOMEM;
+
+	priv->dev = dev;
+	priv->hw.init = &init;
+	priv->regmap = dev_get_regmap(dev, NULL);
+	priv->reg = desc->reg;
+
+	clk_hw_register_clkdev(&priv->hw, desc->name, devname);
+	return devm_clk_register(dev, &priv->hw);
+}
+
+int aic32x4_register_clocks(struct device *dev, const char *mclk_name)
+{
+	int i;
+
+	/*
+	 * These lines are here to preserve the current functionality of
+	 * the driver with regard to the DT.  These should eventually be set
+	 * by DT nodes so that the connections can be set up in configuration
+	 * rather than code.
+	 */
+	aic32x4_clkdesc_array[0].parent_names =
+			(const char* []) { mclk_name, "bclk", "gpio", "din" };
+
+	for (i = 0; i < ARRAY_SIZE(aic32x4_clkdesc_array); ++i)
+		aic32x4_register_clk(dev, &aic32x4_clkdesc_array[i]);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(aic32x4_register_clocks);

sound/soc/codecs/tlv320aic32x4.c

@@ -14,7 +14,7 @@
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
@@ -33,6 +33,7 @@
 #include <linux/cdev.h>
 #include <linux/slab.h>
 #include <linux/clk.h>
+#include <linux/of_clk.h>
 #include <linux/regulator/consumer.h>
 
 #include <sound/tlv320aic32x4.h>
@@ -49,9 +50,7 @@
 struct aic32x4_rate_divs {
 	u32 mclk;
 	u32 rate;
-	u8 p_val;
-	u8 pll_j;
-	u16 pll_d;
+	unsigned long pll_rate;
 	u16 dosr;
 	u8 ndac;
 	u8 mdac;
@@ -71,6 +70,7 @@ struct aic32x4_priv {
 	bool swapdacs;
 	int rstn_gpio;
 	struct clk *mclk;
+	const char *mclk_name;
 
 	struct regulator *supply_ldo;
 	struct regulator *supply_iov;
@@ -309,34 +309,34 @@ static const struct snd_kcontrol_new aic32x4_snd_controls[] = {
 
 static const struct aic32x4_rate_divs aic32x4_divs[] = {
 	/* 8k rate */
-	{12000000, 8000, 1, 7, 6800, 768, 5, 3, 128, 5, 18, 24, 1, 1},
-	{24000000, 8000, 2, 7, 6800, 768, 15, 1, 64, 45, 4, 24, 1, 1},
-	{25000000, 8000, 2, 7, 3728, 768, 15, 1, 64, 45, 4, 24, 1, 1},
+	{ 12000000, 8000, 57120000, 768, 5, 3, 128, 5, 18, 24, 1, 1 },
+	{ 24000000, 8000, 57120000, 768, 15, 1, 64, 45, 4, 24, 1, 1 },
+	{ 25000000, 8000, 32620000, 768, 15, 1, 64, 45, 4, 24, 1, 1 },
 	/* 11.025k rate */
-	{12000000, 11025, 1, 7, 5264, 512, 8, 2, 128, 8, 8, 16, 1, 1},
-	{24000000, 11025, 2, 7, 5264, 512, 16, 1, 64, 32, 4, 16, 1, 1},
+	{ 12000000, 11025, 44217600, 512, 8, 2, 128, 8, 8, 16, 1, 1 },
+	{ 24000000, 11025, 44217600, 512, 16, 1, 64, 32, 4, 16, 1, 1 },
 	/* 16k rate */
-	{12000000, 16000, 1, 7, 6800, 384, 5, 3, 128, 5, 9, 12, 1, 1},
-	{24000000, 16000, 2, 7, 6800, 384, 15, 1, 64, 18, 5, 12, 1, 1},
-	{25000000, 16000, 2, 7, 3728, 384, 15, 1, 64, 18, 5, 12, 1, 1},
+	{ 12000000, 16000, 57120000, 384, 5, 3, 128, 5, 9, 12, 1, 1 },
+	{ 24000000, 16000, 57120000, 384, 15, 1, 64, 18, 5, 12, 1, 1 },
+	{ 25000000, 16000, 32620000, 384, 15, 1, 64, 18, 5, 12, 1, 1 },
 	/* 22.05k rate */
-	{12000000, 22050, 1, 7, 5264, 256, 4, 4, 128, 4, 8, 8, 1, 1},
-	{24000000, 22050, 2, 7, 5264, 256, 16, 1, 64, 16, 4, 8, 1, 1},
-	{25000000, 22050, 2, 7, 2253, 256, 16, 1, 64, 16, 4, 8, 1, 1},
+	{ 12000000, 22050, 44217600, 256, 4, 4, 128, 4, 8, 8, 1, 1 },
+	{ 24000000, 22050, 44217600, 256, 16, 1, 64, 16, 4, 8, 1, 1 },
+	{ 25000000, 22050, 19713750, 256, 16, 1, 64, 16, 4, 8, 1, 1 },
 	/* 32k rate */
-	{12000000, 32000, 1, 7, 1680, 192, 2, 7, 64, 2, 21, 6, 1, 1},
-	{24000000, 32000, 2, 7, 1680, 192, 7, 2, 64, 7, 6, 6, 1, 1},
+	{ 12000000, 32000, 14112000, 192, 2, 7, 64, 2, 21, 6, 1, 1 },
+	{ 24000000, 32000, 14112000, 192, 7, 2, 64, 7, 6, 6, 1, 1 },
 	/* 44.1k rate */
-	{12000000, 44100, 1, 7, 5264, 128, 2, 8, 128, 2, 8, 4, 1, 1},
-	{24000000, 44100, 2, 7, 5264, 128, 8, 2, 64, 8, 4, 4, 1, 1},
-	{25000000, 44100, 2, 7, 2253, 128, 8, 2, 64, 8, 4, 4, 1, 1},
+	{ 12000000, 44100, 44217600, 128, 2, 8, 128, 2, 8, 4, 1, 1 },
+	{ 24000000, 44100, 44217600, 128, 8, 2, 64, 8, 4, 4, 1, 1 },
+	{ 25000000, 44100, 19713750, 128, 8, 2, 64, 8, 4, 4, 1, 1 },
 	/* 48k rate */
-	{12000000, 48000, 1, 8, 1920, 128, 2, 8, 128, 2, 8, 4, 1, 1},
-	{24000000, 48000, 2, 8, 1920, 128, 8, 2, 64, 8, 4, 4, 1, 1},
-	{25000000, 48000, 2, 7, 8643, 128, 8, 2, 64, 8, 4, 4, 1, 1},
+	{ 12000000, 48000, 18432000, 128, 2, 8, 128, 2, 8, 4, 1, 1 },
+	{ 24000000, 48000, 18432000, 128, 8, 2, 64, 8, 4, 4, 1, 1 },
+	{ 25000000, 48000, 75626250, 128, 8, 2, 64, 8, 4, 4, 1, 1 },
 
 	/* 96k rate */
-	{25000000, 96000, 2, 7, 8643, 64, 4, 4, 64, 4, 4, 1, 1, 9},
+	{ 25000000, 96000, 75626250, 64, 4, 4, 64, 4, 4, 1, 1, 9 },
 };
 
 static const struct snd_kcontrol_new hpl_output_mixer_controls[] = {
@@ -393,7 +393,7 @@ static const struct snd_kcontrol_new in3r_to_lmixer_controls[] = {
 	SOC_DAPM_ENUM("IN3_R L- Switch", in3r_lpga_n_enum),
 };
 
-/*  Right mixer pins */
+/*	Right mixer pins */
 static SOC_ENUM_SINGLE_DECL(in1r_rpga_p_enum, AIC32X4_RMICPGAPIN, 6, resistor_text);
 static SOC_ENUM_SINGLE_DECL(in2r_rpga_p_enum, AIC32X4_RMICPGAPIN, 4, resistor_text);
 static SOC_ENUM_SINGLE_DECL(in3r_rpga_p_enum, AIC32X4_RMICPGAPIN, 2, resistor_text);
@@ -595,7 +595,7 @@ static const struct snd_soc_dapm_route aic32x4_dapm_routes[] = {
 static const struct regmap_range_cfg aic32x4_regmap_pages[] = {
 	{
 		.selector_reg = 0,
-		.selector_mask  = 0xff,
+		.selector_mask	= 0xff,
 		.window_start = 0,
 		.window_len = 128,
 		.range_min = 0,
@@ -616,7 +616,7 @@ static inline int aic32x4_get_divs(int mclk, int rate)
 
 	for (i = 0; i < ARRAY_SIZE(aic32x4_divs); i++) {
 		if ((aic32x4_divs[i].rate == rate)
-		    && (aic32x4_divs[i].mclk == mclk)) {
+			&& (aic32x4_divs[i].mclk == mclk)) {
 			return i;
 		}
 	}
@@ -688,12 +688,12 @@ static int aic32x4_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
 	}
 
 	snd_soc_component_update_bits(component, AIC32X4_IFACE1,
-			    AIC32X4_IFACE1_DATATYPE_MASK |
-			    AIC32X4_IFACE1_MASTER_MASK, iface_reg_1);
+				AIC32X4_IFACE1_DATATYPE_MASK |
+				AIC32X4_IFACE1_MASTER_MASK, iface_reg_1);
 	snd_soc_component_update_bits(component, AIC32X4_IFACE2,
-			    AIC32X4_DATA_OFFSET_MASK, iface_reg_2);
+				AIC32X4_DATA_OFFSET_MASK, iface_reg_2);
 	snd_soc_component_update_bits(component, AIC32X4_IFACE3,
-			    AIC32X4_BCLKINV_MASK, iface_reg_3);
+				AIC32X4_BCLKINV_MASK, iface_reg_3);
 
 	return 0;
 }
@@ -715,6 +715,11 @@ static int aic32x4_setup_clocks(struct snd_soc_component *component,
 				unsigned int parent_rate)
 {
 	int i;
+	int ret;
+
+	struct clk_bulk_data clocks[] = {
+		{ .id = "pll" },
+	};
 
 	i = aic32x4_get_divs(parent_rate, sample_rate);
 	if (i < 0) {
@@ -722,39 +727,29 @@ static int aic32x4_setup_clocks(struct snd_soc_component *component,
 		return i;
 	}
 
+	ret = devm_clk_bulk_get(component->dev, ARRAY_SIZE(clocks), clocks);
+	if (ret)
+		return ret;
+
+	clk_set_rate(clocks[0].clk, sample_rate);
+
 	aic32x4_set_processing_blocks(component, aic32x4_divs[i].r_block, aic32x4_divs[i].p_block);
 
-	/* MCLK as PLL_CLKIN */
-	snd_soc_component_update_bits(component, AIC32X4_CLKMUX, AIC32X4_PLL_CLKIN_MASK,
-			    AIC32X4_PLL_CLKIN_MCLK << AIC32X4_PLL_CLKIN_SHIFT);
 	/* PLL as CODEC_CLKIN */
-	snd_soc_component_update_bits(component, AIC32X4_CLKMUX, AIC32X4_CODEC_CLKIN_MASK,
-			    AIC32X4_CODEC_CLKIN_PLL << AIC32X4_CODEC_CLKIN_SHIFT);
+	snd_soc_component_update_bits(component, AIC32X4_CLKMUX,
+			AIC32X4_CODEC_CLKIN_MASK,
+			AIC32X4_CODEC_CLKIN_PLL << AIC32X4_CODEC_CLKIN_SHIFT);
 	/* DAC_MOD_CLK as BDIV_CLKIN */
 	snd_soc_component_update_bits(component, AIC32X4_IFACE3, AIC32X4_BDIVCLK_MASK,
-			    AIC32X4_DACMOD2BCLK << AIC32X4_BDIVCLK_SHIFT);
-
-	/* We will fix R value to 1 and will make P & J=K.D as variable */
-	snd_soc_component_update_bits(component, AIC32X4_PLLPR, AIC32X4_PLL_R_MASK, 0x01);
-
-	/* PLL P value */
-	snd_soc_component_update_bits(component, AIC32X4_PLLPR, AIC32X4_PLL_P_MASK,
-			    aic32x4_divs[i].p_val << AIC32X4_PLL_P_SHIFT);
-
-	/* PLL J value */
-	snd_soc_component_write(component, AIC32X4_PLLJ, aic32x4_divs[i].pll_j);
-
-	/* PLL D value */
-	snd_soc_component_write(component, AIC32X4_PLLDMSB, (aic32x4_divs[i].pll_d >> 8));
-	snd_soc_component_write(component, AIC32X4_PLLDLSB, (aic32x4_divs[i].pll_d & 0xff));
+				AIC32X4_DACMOD2BCLK << AIC32X4_BDIVCLK_SHIFT);
 
 	/* NDAC divider value */
 	snd_soc_component_update_bits(component, AIC32X4_NDAC,
-			    AIC32X4_NDAC_MASK, aic32x4_divs[i].ndac);
+				AIC32X4_NDAC_MASK, aic32x4_divs[i].ndac);
 
 	/* MDAC divider value */
 	snd_soc_component_update_bits(component, AIC32X4_MDAC,
-			    AIC32X4_MDAC_MASK, aic32x4_divs[i].mdac);
+				AIC32X4_MDAC_MASK, aic32x4_divs[i].mdac);
 
 	/* DOSR MSB & LSB values */
 	snd_soc_component_write(component, AIC32X4_DOSRMSB, aic32x4_divs[i].dosr >> 8);
@@ -762,18 +757,18 @@ static int aic32x4_setup_clocks(struct snd_soc_component *component,
 
 	/* NADC divider value */
 	snd_soc_component_update_bits(component, AIC32X4_NADC,
-			    AIC32X4_NADC_MASK, aic32x4_divs[i].nadc);
+				AIC32X4_NADC_MASK, aic32x4_divs[i].nadc);
 
 	/* MADC divider value */
 	snd_soc_component_update_bits(component, AIC32X4_MADC,
-			    AIC32X4_MADC_MASK, aic32x4_divs[i].madc);
+				AIC32X4_MADC_MASK, aic32x4_divs[i].madc);
 
 	/* AOSR value */
 	snd_soc_component_write(component, AIC32X4_AOSR, aic32x4_divs[i].aosr);
 
 	/* BCLK N divider */
 	snd_soc_component_update_bits(component, AIC32X4_BCLKN,
-			    AIC32X4_BCLK_MASK, aic32x4_divs[i].blck_N);
+				AIC32X4_BCLK_MASK, aic32x4_divs[i].blck_N);
 
 	return 0;
 }
@@ -792,23 +787,23 @@ static int aic32x4_hw_params(struct snd_pcm_substream *substream,
 	switch (params_width(params)) {
 	case 16:
 		iface1_reg |= (AIC32X4_WORD_LEN_16BITS <<
-			       AIC32X4_IFACE1_DATALEN_SHIFT);
+				   AIC32X4_IFACE1_DATALEN_SHIFT);
 		break;
 	case 20:
 		iface1_reg |= (AIC32X4_WORD_LEN_20BITS <<
-			       AIC32X4_IFACE1_DATALEN_SHIFT);
+				   AIC32X4_IFACE1_DATALEN_SHIFT);
 		break;
 	case 24:
 		iface1_reg |= (AIC32X4_WORD_LEN_24BITS <<
-			       AIC32X4_IFACE1_DATALEN_SHIFT);
+				   AIC32X4_IFACE1_DATALEN_SHIFT);
 		break;
 	case 32:
 		iface1_reg |= (AIC32X4_WORD_LEN_32BITS <<
-			       AIC32X4_IFACE1_DATALEN_SHIFT);
+				   AIC32X4_IFACE1_DATALEN_SHIFT);
 		break;
 	}
 	snd_soc_component_update_bits(component, AIC32X4_IFACE1,
-			    AIC32X4_IFACE1_DATALEN_MASK, iface1_reg);
+				AIC32X4_IFACE1_DATALEN_MASK, iface1_reg);
 
 	if (params_channels(params) == 1) {
 		dacsetup_reg = AIC32X4_RDAC2LCHN | AIC32X4_LDAC2LCHN;
@@ -819,7 +814,7 @@ static int aic32x4_hw_params(struct snd_pcm_substream *substream,
 			dacsetup_reg = AIC32X4_LDAC2LCHN | AIC32X4_RDAC2RCHN;
 	}
 	snd_soc_component_update_bits(component, AIC32X4_DACSETUP,
-			    AIC32X4_DAC_CHAN_MASK, dacsetup_reg);
+				AIC32X4_DAC_CHAN_MASK, dacsetup_reg);
 
 	return 0;
 }
@@ -829,7 +824,7 @@ static int aic32x4_mute(struct snd_soc_dai *dai, int mute)
 	struct snd_soc_component *component = dai->component;
 
 	snd_soc_component_update_bits(component, AIC32X4_DACMUTE,
-			    AIC32X4_MUTEON, mute ? AIC32X4_MUTEON : 0);
+				AIC32X4_MUTEON, mute ? AIC32X4_MUTEON : 0);
 
 	return 0;
 }
@@ -851,27 +846,27 @@ static int aic32x4_set_bias_level(struct snd_soc_component *component,
 
 		/* Switch on PLL */
 		snd_soc_component_update_bits(component, AIC32X4_PLLPR,
-				    AIC32X4_PLLEN, AIC32X4_PLLEN);
+					AIC32X4_PLLEN, AIC32X4_PLLEN);
 
 		/* Switch on NDAC Divider */
 		snd_soc_component_update_bits(component, AIC32X4_NDAC,
-				    AIC32X4_NDACEN, AIC32X4_NDACEN);
+					AIC32X4_NDACEN, AIC32X4_NDACEN);
 
 		/* Switch on MDAC Divider */
 		snd_soc_component_update_bits(component, AIC32X4_MDAC,
-				    AIC32X4_MDACEN, AIC32X4_MDACEN);
+					AIC32X4_MDACEN, AIC32X4_MDACEN);
 
 		/* Switch on NADC Divider */
 		snd_soc_component_update_bits(component, AIC32X4_NADC,
-				    AIC32X4_NADCEN, AIC32X4_NADCEN);
+					AIC32X4_NADCEN, AIC32X4_NADCEN);
 
 		/* Switch on MADC Divider */
 		snd_soc_component_update_bits(component, AIC32X4_MADC,
-				    AIC32X4_MADCEN, AIC32X4_MADCEN);
+					AIC32X4_MADCEN, AIC32X4_MADCEN);
 
 		/* Switch on BCLK_N Divider */
 		snd_soc_component_update_bits(component, AIC32X4_BCLKN,
-				    AIC32X4_BCLKEN, AIC32X4_BCLKEN);
+					AIC32X4_BCLKEN, AIC32X4_BCLKEN);
 		break;
 	case SND_SOC_BIAS_PREPARE:
 		break;
@@ -882,27 +877,27 @@ static int aic32x4_set_bias_level(struct snd_soc_component *component,
 
 		/* Switch off BCLK_N Divider */
 		snd_soc_component_update_bits(component, AIC32X4_BCLKN,
-				    AIC32X4_BCLKEN, 0);
+					AIC32X4_BCLKEN, 0);
 
 		/* Switch off MADC Divider */
 		snd_soc_component_update_bits(component, AIC32X4_MADC,
-				    AIC32X4_MADCEN, 0);
+					AIC32X4_MADCEN, 0);
 
 		/* Switch off NADC Divider */
 		snd_soc_component_update_bits(component, AIC32X4_NADC,
-				    AIC32X4_NADCEN, 0);
+					AIC32X4_NADCEN, 0);
 
 		/* Switch off MDAC Divider */
 		snd_soc_component_update_bits(component, AIC32X4_MDAC,
-				    AIC32X4_MDACEN, 0);
+					AIC32X4_MDACEN, 0);
 
 		/* Switch off NDAC Divider */
 		snd_soc_component_update_bits(component, AIC32X4_NDAC,
-				    AIC32X4_NDACEN, 0);
+					AIC32X4_NDACEN, 0);
 
 		/* Switch off PLL */
 		snd_soc_component_update_bits(component, AIC32X4_PLLPR,
-				    AIC32X4_PLLEN, 0);
+					AIC32X4_PLLEN, 0);
 
 		/* Switch off master clock */
 		clk_disable_unprepare(aic32x4->mclk);
@@ -914,7 +909,7 @@ static int aic32x4_set_bias_level(struct snd_soc_component *component,
 }
 
 #define AIC32X4_RATES	SNDRV_PCM_RATE_8000_96000
-#define AIC32X4_FORMATS	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
+#define AIC32X4_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
 			 | SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
 
 static const struct snd_soc_dai_ops aic32x4_ops = {
@@ -927,17 +922,17 @@ static const struct snd_soc_dai_ops aic32x4_ops = {
 static struct snd_soc_dai_driver aic32x4_dai = {
 	.name = "tlv320aic32x4-hifi",
 	.playback = {
-		     .stream_name = "Playback",
-		     .channels_min = 1,
-		     .channels_max = 2,
-		     .rates = AIC32X4_RATES,
-		     .formats = AIC32X4_FORMATS,},
+			 .stream_name = "Playback",
+			 .channels_min = 1,
+			 .channels_max = 2,
+			 .rates = AIC32X4_RATES,
+			 .formats = AIC32X4_FORMATS,},
 	.capture = {
-		    .stream_name = "Capture",
-		    .channels_min = 1,
-		    .channels_max = 2,
-		    .rates = AIC32X4_RATES,
-		    .formats = AIC32X4_FORMATS,},
+			.stream_name = "Capture",
+			.channels_min = 1,
+			.channels_max = 2,
+			.rates = AIC32X4_RATES,
+			.formats = AIC32X4_FORMATS,},
 	.ops = &aic32x4_ops,
 	.symmetric_rates = 1,
 };
@@ -950,7 +945,7 @@ static void aic32x4_setup_gpios(struct snd_soc_component *component)
 	/* MFP1 */
 	if (aic32x4->setup->gpio_func[0] != AIC32X4_MFPX_DEFAULT_VALUE) {
 		snd_soc_component_write(component, AIC32X4_DINCTL,
-		      aic32x4->setup->gpio_func[0]);
+			  aic32x4->setup->gpio_func[0]);
 		snd_soc_add_component_controls(component, aic32x4_mfp1,
 			ARRAY_SIZE(aic32x4_mfp1));
 	}
@@ -958,7 +953,7 @@ static void aic32x4_setup_gpios(struct snd_soc_component *component)
 	/* MFP2 */
 	if (aic32x4->setup->gpio_func[1] != AIC32X4_MFPX_DEFAULT_VALUE) {
 		snd_soc_component_write(component, AIC32X4_DOUTCTL,
-		      aic32x4->setup->gpio_func[1]);
+			  aic32x4->setup->gpio_func[1]);
 		snd_soc_add_component_controls(component, aic32x4_mfp2,
 			ARRAY_SIZE(aic32x4_mfp2));
 	}
@@ -966,7 +961,7 @@ static void aic32x4_setup_gpios(struct snd_soc_component *component)
 	/* MFP3 */
 	if (aic32x4->setup->gpio_func[2] != AIC32X4_MFPX_DEFAULT_VALUE) {
 		snd_soc_component_write(component, AIC32X4_SCLKCTL,
-		      aic32x4->setup->gpio_func[2]);
+			  aic32x4->setup->gpio_func[2]);
 		snd_soc_add_component_controls(component, aic32x4_mfp3,
 			ARRAY_SIZE(aic32x4_mfp3));
 	}
@@ -974,7 +969,7 @@ static void aic32x4_setup_gpios(struct snd_soc_component *component)
 	/* MFP4 */
 	if (aic32x4->setup->gpio_func[3] != AIC32X4_MFPX_DEFAULT_VALUE) {
 		snd_soc_component_write(component, AIC32X4_MISOCTL,
-		      aic32x4->setup->gpio_func[3]);
+			  aic32x4->setup->gpio_func[3]);
 		snd_soc_add_component_controls(component, aic32x4_mfp4,
 			ARRAY_SIZE(aic32x4_mfp4));
 	}
@@ -982,7 +977,7 @@ static void aic32x4_setup_gpios(struct snd_soc_component *component)
 	/* MFP5 */
 	if (aic32x4->setup->gpio_func[4] != AIC32X4_MFPX_DEFAULT_VALUE) {
 		snd_soc_component_write(component, AIC32X4_GPIOCTL,
-		      aic32x4->setup->gpio_func[4]);
+			  aic32x4->setup->gpio_func[4]);
 		snd_soc_add_component_controls(component, aic32x4_mfp5,
 			ARRAY_SIZE(aic32x4_mfp5));
 	}
@@ -1006,8 +1001,8 @@ static int aic32x4_component_probe(struct snd_soc_component *component)
 
 	/* Power platform configuration */
 	if (aic32x4->power_cfg & AIC32X4_PWR_MICBIAS_2075_LDOIN) {
-		snd_soc_component_write(component, AIC32X4_MICBIAS, AIC32X4_MICBIAS_LDOIN |
-						      AIC32X4_MICBIAS_2075V);
+		snd_soc_component_write(component, AIC32X4_MICBIAS,
+				AIC32X4_MICBIAS_LDOIN | AIC32X4_MICBIAS_2075V);
 	}
 	if (aic32x4->power_cfg & AIC32X4_PWR_AVDD_DVDD_WEAK_DISABLE)
 		snd_soc_component_write(component, AIC32X4_PWRCFG, AIC32X4_AVDDWEAKDISABLE);
@@ -1070,12 +1065,18 @@ static int aic32x4_parse_dt(struct aic32x4_priv *aic32x4,
 		struct device_node *np)
 {
 	struct aic32x4_setup_data *aic32x4_setup;
+	int ret;
 
 	aic32x4_setup = devm_kzalloc(aic32x4->dev, sizeof(*aic32x4_setup),
 							GFP_KERNEL);
 	if (!aic32x4_setup)
 		return -ENOMEM;
 
+	ret = of_property_match_string(np, "clock-names", "mclk");
+	if (ret < 0)
+		return -EINVAL;
+	aic32x4->mclk_name = of_clk_get_parent_name(np, ret);
+
 	aic32x4->swapdacs = false;
 	aic32x4->micpga_routing = 0;
 	aic32x4->rstn_gpio = of_get_named_gpio(np, "reset-gpios", 0);
@@ -1197,7 +1198,7 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap)
 		return PTR_ERR(regmap);
 
 	aic32x4 = devm_kzalloc(dev, sizeof(struct aic32x4_priv),
-			       GFP_KERNEL);
+				   GFP_KERNEL);
 	if (aic32x4 == NULL)
 		return -ENOMEM;
 
@@ -1209,6 +1210,7 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap)
 		aic32x4->swapdacs = pdata->swapdacs;
 		aic32x4->micpga_routing = pdata->micpga_routing;
 		aic32x4->rstn_gpio = pdata->rstn_gpio;
+		aic32x4->mclk_name = "mclk";
 	} else if (np) {
 		ret = aic32x4_parse_dt(aic32x4, np);
 		if (ret) {
@@ -1220,6 +1222,7 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap)
 		aic32x4->swapdacs = false;
 		aic32x4->micpga_routing = 0;
 		aic32x4->rstn_gpio = -1;
+		aic32x4->mclk_name = "mclk";
 	}
 
 	aic32x4->mclk = devm_clk_get(dev, "mclk");
@@ -1228,6 +1231,10 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap)
 		return PTR_ERR(aic32x4->mclk);
 	}
 
+	ret = aic32x4_register_clocks(dev, aic32x4->mclk_name);
+	if (ret)
+		return ret;
+
 	if (gpio_is_valid(aic32x4->rstn_gpio)) {
 		ret = devm_gpio_request_one(dev, aic32x4->rstn_gpio,
 				GPIOF_OUT_INIT_LOW, "tlv320aic32x4 rstn");

sound/soc/codecs/tlv320aic32x4.h

@@ -16,6 +16,7 @@ struct regmap_config;
 extern const struct regmap_config aic32x4_regmap_config;
 int aic32x4_probe(struct device *dev, struct regmap *regmap);
 int aic32x4_remove(struct device *dev);
+int aic32x4_register_clocks(struct device *dev, const char *mclk_name);
 
 /* tlv320aic32x4 register space (in decimal to match datasheet) */
 
@@ -205,4 +206,8 @@ int aic32x4_remove(struct device *dev);
 #define AIC32X4_RMICPGANIN_IN1L_10K	0x10
 #define AIC32X4_RMICPGANIN_CM1R_10K	0x40
 
+/* Clock Limits */
+#define AIC32X4_MAX_PLL_CLKIN		20000000
+
+
 #endif				/* _TLV320AIC32X4_H */