openwrt/target/linux/brcm2708/patches-4.19/950-0408-ASoC-tlv320aic32x4-Model-BDIV-divider-in-CCF.patch

From f057c2ccc9c5fddca55fb42032395cf355f918e8 Mon Sep 17 00:00:00 2001
From: Annaliese McDermond <nh6z@nh6z.net>
Date: Thu, 21 Mar 2019 17:58:48 -0700
Subject: [PATCH 408/703] ASoC: tlv320aic32x4: Model BDIV divider in CCF

commit 9b484124ebd906c4d6bc826cc0d417e80cc1105c upstream.

Model and manage BDIV divider as components 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/tlv320aic32x4-clk.c | 36 ++++++++++++++++++
 sound/soc/codecs/tlv320aic32x4.c     | 56 +++++++++++++---------------
 2 files changed, 62 insertions(+), 30 deletions(-)

--- a/sound/soc/codecs/tlv320aic32x4-clk.c
+++ b/sound/soc/codecs/tlv320aic32x4-clk.c
@@ -351,6 +351,34 @@ static const struct clk_ops aic32x4_div_
 	.recalc_rate = clk_aic32x4_div_recalc_rate,
 };
 
+static int clk_aic32x4_bdiv_set_parent(struct clk_hw *hw, u8 index)
+{
+	struct clk_aic32x4 *mux = to_clk_aic32x4(hw);
+
+	return regmap_update_bits(mux->regmap, AIC32X4_IFACE3,
+				AIC32X4_BDIVCLK_MASK, index);
+}
+
+static u8 clk_aic32x4_bdiv_get_parent(struct clk_hw *hw)
+{
+	struct clk_aic32x4 *mux = to_clk_aic32x4(hw);
+	unsigned int val;
+
+	regmap_read(mux->regmap, AIC32X4_IFACE3, &val);
+
+	return val & AIC32X4_BDIVCLK_MASK;
+}
+
+static const struct clk_ops aic32x4_bdiv_ops = {
+	.prepare = clk_aic32x4_div_prepare,
+	.unprepare = clk_aic32x4_div_unprepare,
+	.set_parent = clk_aic32x4_bdiv_set_parent,
+	.get_parent = clk_aic32x4_bdiv_get_parent,
+	.set_rate = clk_aic32x4_div_set_rate,
+	.round_rate = clk_aic32x4_div_round_rate,
+	.recalc_rate = clk_aic32x4_div_recalc_rate,
+};
+
 static struct aic32x4_clkdesc aic32x4_clkdesc_array[] = {
 	{
 		.name = "pll",
@@ -396,6 +424,14 @@ static struct aic32x4_clkdesc aic32x4_cl
 		.ops = &aic32x4_div_ops,
 		.reg = AIC32X4_MADC,
 	},
+	{
+		.name = "bdiv",
+		.parent_names =
+			(const char *[]) { "ndac", "mdac", "nadc", "madc" },
+		.num_parents = 4,
+		.ops = &aic32x4_bdiv_ops,
+		.reg = AIC32X4_BCLKN,
+	},
 };
 
 static struct clk *aic32x4_register_clk(struct device *dev,
--- a/sound/soc/codecs/tlv320aic32x4.c
+++ b/sound/soc/codecs/tlv320aic32x4.c
@@ -57,7 +57,7 @@ struct aic32x4_rate_divs {
 	u8 aosr;
 	unsigned long nadc_rate;
 	unsigned long madc_rate;
-	u8 blck_N;
+	unsigned long bdiv_rate;
 	u8 r_block;
 	u8 p_block;
 };
@@ -310,53 +310,53 @@ static const struct snd_kcontrol_new aic
 static const struct aic32x4_rate_divs aic32x4_divs[] = {
 	/* 8k rate */
 	{ 12000000, 8000, 57120000, 768, 18432000, 6144000, 128, 18432000,
-		1024000, 24, 1, 1 },
+		1024000, 256000, 1, 1 },
 	{ 24000000, 8000, 57120000, 768, 6144000, 6144000, 64, 2048000,
-		512000, 24, 1, 1 },
+		512000, 256000, 1, 1 },
 	{ 25000000, 8000, 32620000, 768, 6144000, 6144000, 64, 2048000,
-		512000, 24, 1, 1 },
+		512000, 256000, 1, 1 },
 	/* 11.025k rate */
 	{ 12000000, 11025, 44217600, 512, 11289600, 5644800, 128, 11289600,
-		1411200, 16, 1, 1 },
+		1411200, 352800, 1, 1 },
 	{ 24000000, 11025, 44217600, 512, 5644800, 5644800, 64, 2822400,
-		705600, 16, 1, 1 },
+		705600, 352800, 1, 1 },
 	/* 16k rate */
 	{ 12000000, 16000, 57120000, 384, 18432000, 6144000, 128, 18432000,
-		2048000, 12, 1, 1 },
+		2048000, 512000, 1, 1 },
 	{ 24000000, 16000, 57120000, 384, 6144000, 6144000, 64, 5120000,
-		1024000, 12, 1, 1 },
+		1024000, 512000, 1, 1 },
 	{ 25000000, 16000, 32620000, 384, 6144000, 6144000, 64, 5120000,
-		1024000, 12, 1, 1 },
+		1024000, 512000, 1, 1 },
 	/* 22.05k rate */
 	{ 12000000, 22050, 44217600, 256, 22579200, 5644800, 128, 22579200,
-		2822400, 8, 1, 1 },
+		2822400, 705600, 1, 1 },
 	{ 24000000, 22050, 44217600, 256, 5644800, 5644800, 64, 5644800,
-		1411200, 8, 1, 1 },
+		1411200, 705600, 1, 1 },
 	{ 25000000, 22050, 19713750, 256, 5644800, 5644800, 64, 5644800,
-		1411200, 8, 1, 1 },
+		1411200, 705600, 1, 1 },
 	/* 32k rate */
 	{ 12000000, 32000, 14112000, 192, 43008000, 6144000, 64, 43008000,
-		2048000, 6, 1, 1 },
+		2048000, 1024000, 1, 1 },
 	{ 24000000, 32000, 14112000, 192, 12288000, 6144000, 64, 12288000,
-		2048000, 6, 1, 1 },
+		2048000, 1024000, 1, 1 },
 	/* 44.1k rate */
 	{ 12000000, 44100, 44217600, 128, 45158400, 5644800, 128, 45158400,
-		5644800, 4, 1, 1 },
+		5644800, 1411200, 1, 1 },
 	{ 24000000, 44100, 44217600, 128, 11289600, 5644800, 64, 11289600,
-		2822400, 4, 1, 1 },
+		2822400, 1411200, 1, 1 },
 	{ 25000000, 44100, 19713750, 128, 11289600, 5644800, 64, 11289600,
-		2822400, 4, 1, 1 },
+		2822400, 1411200, 1, 1 },
 	/* 48k rate */
 	{ 12000000, 48000, 18432000, 128, 49152000, 6144000, 128, 49152000,
-		6144000, 4, 1, 1 },
+		6144000, 1536000, 1, 1 },
 	{ 24000000, 48000, 18432000, 128, 12288000, 6144000, 64, 12288000,
-		3072000, 4, 1, 1 },
+		3072000, 1536000, 1, 1 },
 	{ 25000000, 48000, 75626250, 128, 12288000, 6144000, 64, 12288000,
-		3072000, 4, 1, 1 },
+		3072000, 1536000, 1, 1 },
 
 	/* 96k rate */
 	{ 25000000, 96000, 75626250, 64, 24576000, 6144000, 64, 24576000,
-		6144000, 1, 1, 9 },
+		6144000, 3072000, 1, 9 },
 };
 
 static const struct snd_kcontrol_new hpl_output_mixer_controls[] = {
@@ -745,6 +745,7 @@ static int aic32x4_setup_clocks(struct s
 		{ .id = "madc" },
 		{ .id = "ndac" },
 		{ .id = "mdac" },
+		{ .id = "bdiv" },
 	};
 
 	i = aic32x4_get_divs(parent_rate, sample_rate);
@@ -762,14 +763,10 @@ static int aic32x4_setup_clocks(struct s
 	clk_set_rate(clocks[2].clk, aic32x4_divs[i].madc_rate);
 	clk_set_rate(clocks[3].clk, aic32x4_divs[i].ndac_rate);
 	clk_set_rate(clocks[4].clk, aic32x4_divs[i].mdac_rate);
+	clk_set_rate(clocks[5].clk, aic32x4_divs[i].bdiv_rate);
 
 	aic32x4_set_processing_blocks(component, aic32x4_divs[i].r_block, aic32x4_divs[i].p_block);
 
-	/* DAC_MOD_CLK as BDIV_CLKIN */
-	snd_soc_component_update_bits(component, AIC32X4_IFACE3,
-				AIC32X4_BDIVCLK_MASK,
-				AIC32X4_DACMOD2BCLK << AIC32X4_BDIVCLK_SHIFT);
-
 	/* DOSR MSB & LSB values */
 	snd_soc_component_write(component, AIC32X4_DOSRMSB, aic32x4_divs[i].dosr >> 8);
 	snd_soc_component_write(component, AIC32X4_DOSRLSB, (aic32x4_divs[i].dosr & 0xff));
@@ -777,10 +774,6 @@ static int aic32x4_setup_clocks(struct s
 	/* 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);
-
 	return 0;
 }
 
@@ -1003,6 +996,8 @@ static int aic32x4_component_probe(struc
 	struct clk_bulk_data clocks[] = {
 		{ .id = "codec_clkin" },
 		{ .id = "pll" },
+		{ .id = "bdiv" },
+		{ .id = "mdac" },
 	};
 
 	ret = devm_clk_bulk_get(component->dev, ARRAY_SIZE(clocks), clocks);
@@ -1020,6 +1015,7 @@ static int aic32x4_component_probe(struc
 		aic32x4_setup_gpios(component);
 
 	clk_set_parent(clocks[0].clk, clocks[1].clk);
+	clk_set_parent(clocks[2].clk, clocks[3].clk);
 
 	/* Power platform configuration */
 	if (aic32x4->power_cfg & AIC32X4_PWR_MICBIAS_2075_LDOIN) {