Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 434 insertions, 0 deletions

diff --git a/sound/soc/tegra/tegra210_peq.c b/sound/soc/tegra/tegra210_peq.c
new file mode 100644
index 0000000000..205d956abb
--- /dev/null
+++ b/sound/soc/tegra/tegra210_peq.c
@@ -0,0 +1,434 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// tegra210_peq.c - Tegra210 PEQ driver
+//
+// Copyright (c) 2022, NVIDIA CORPORATION. All rights reserved.
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include "tegra210_ope.h"
+#include "tegra210_peq.h"
+
+static const struct reg_default tegra210_peq_reg_defaults[] = {
+	{ TEGRA210_PEQ_CFG, 0x00000013},
+	{ TEGRA210_PEQ_CFG_RAM_CTRL, 0x00004000},
+	{ TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL, 0x00004000},
+};
+
+static const u32 biquad_init_gains[TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH] = {
+	1495012349, /* Pre-gain */
+
+	/* Gains : b0, b1, a0, a1, a2 */
+	536870912, -1073741824, 536870912, 2143508246, -1069773768, /* Band-0 */
+	134217728, -265414508, 131766272, 2140402222, -1071252997,  /* Band-1 */
+	268435456, -233515765, -33935948, 1839817267, -773826124,   /* Band-2 */
+	536870912, -672537913, 139851540, 1886437554, -824433167,   /* Band-3 */
+	268435456, -114439279, 173723964, 205743566, 278809729,     /* Band-4 */
+	1, 0, 0, 0, 0, /* Band-5 */
+	1, 0, 0, 0, 0, /* Band-6 */
+	1, 0, 0, 0, 0, /* Band-7 */
+	1, 0, 0, 0, 0, /* Band-8 */
+	1, 0, 0, 0, 0, /* Band-9 */
+	1, 0, 0, 0, 0, /* Band-10 */
+	1, 0, 0, 0, 0, /* Band-11 */
+
+	963423114, /* Post-gain */
+};
+
+static const u32 biquad_init_shifts[TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH] = {
+	23, /* Pre-shift */
+	30, 30, 30, 30, 30, 0, 0, 0, 0, 0, 0, 0, /* Shift for bands */
+	28, /* Post-shift */
+};
+
+static s32 biquad_coeff_buffer[TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH];
+
+static void tegra210_peq_read_ram(struct regmap *regmap, unsigned int reg_ctrl,
+				  unsigned int reg_data, unsigned int ram_offset,
+				  unsigned int *data, size_t size)
+{
+	unsigned int val;
+	unsigned int i;
+
+	val = ram_offset & TEGRA210_PEQ_RAM_CTRL_RAM_ADDR_MASK;
+	val |= TEGRA210_PEQ_RAM_CTRL_ADDR_INIT_EN;
+	val |= TEGRA210_PEQ_RAM_CTRL_SEQ_ACCESS_EN;
+	val |= TEGRA210_PEQ_RAM_CTRL_RW_READ;
+
+	regmap_write(regmap, reg_ctrl, val);
+
+	/*
+	 * Since all ahub non-io modules work under same ahub clock it is not
+	 * necessary to check ahub read busy bit after every read.
+	 */
+	for (i = 0; i < size; i++)
+		regmap_read(regmap, reg_data, &data[i]);
+}
+
+static void tegra210_peq_write_ram(struct regmap *regmap, unsigned int reg_ctrl,
+				   unsigned int reg_data, unsigned int ram_offset,
+				   unsigned int *data, size_t size)
+{
+	unsigned int val;
+	unsigned int i;
+
+	val = ram_offset & TEGRA210_PEQ_RAM_CTRL_RAM_ADDR_MASK;
+	val |= TEGRA210_PEQ_RAM_CTRL_ADDR_INIT_EN;
+	val |= TEGRA210_PEQ_RAM_CTRL_SEQ_ACCESS_EN;
+	val |= TEGRA210_PEQ_RAM_CTRL_RW_WRITE;
+
+	regmap_write(regmap, reg_ctrl, val);
+
+	for (i = 0; i < size; i++)
+		regmap_write(regmap, reg_data, data[i]);
+}
+
+static int tegra210_peq_get(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_value *ucontrol)
+{
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+	unsigned int mask = (1 << fls(mc->max)) - 1;
+	unsigned int val;
+
+	regmap_read(ope->peq_regmap, mc->reg, &val);
+
+	ucontrol->value.integer.value[0] = (val >> mc->shift) & mask;
+
+	if (!mc->invert)
+		return 0;
+
+	ucontrol->value.integer.value[0] =
+		mc->max - ucontrol->value.integer.value[0];
+
+	return 0;
+}
+
+static int tegra210_peq_put(struct snd_kcontrol *kcontrol,
+			    struct snd_ctl_elem_value *ucontrol)
+{
+	struct soc_mixer_control *mc =
+		(struct soc_mixer_control *)kcontrol->private_value;
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+	unsigned int mask = (1 << fls(mc->max)) - 1;
+	bool change = false;
+	unsigned int val;
+
+	val = (ucontrol->value.integer.value[0] & mask);
+
+	if (mc->invert)
+		val = mc->max - val;
+
+	val = val << mc->shift;
+
+	regmap_update_bits_check(ope->peq_regmap, mc->reg, (mask << mc->shift),
+				 val, &change);
+
+	return change ? 1 : 0;
+}
+
+static int tegra210_peq_ram_get(struct snd_kcontrol *kcontrol,
+				struct snd_ctl_elem_value *ucontrol)
+{
+	struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+	u32 i, reg_ctrl = params->soc.base;
+	u32 reg_data = reg_ctrl + cmpnt->val_bytes;
+	s32 *data = (s32 *)biquad_coeff_buffer;
+
+	pm_runtime_get_sync(cmpnt->dev);
+
+	tegra210_peq_read_ram(ope->peq_regmap, reg_ctrl, reg_data,
+			      params->shift, data, params->soc.num_regs);
+
+	pm_runtime_put_sync(cmpnt->dev);
+
+	for (i = 0; i < params->soc.num_regs; i++)
+		ucontrol->value.integer.value[i] = (long)data[i];
+
+	return 0;
+}
+
+static int tegra210_peq_ram_put(struct snd_kcontrol *kcontrol,
+				     struct snd_ctl_elem_value *ucontrol)
+{
+	struct tegra_soc_bytes *params = (void *)kcontrol->private_value;
+	struct snd_soc_component *cmpnt = snd_soc_kcontrol_component(kcontrol);
+	struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+	u32 i, reg_ctrl = params->soc.base;
+	u32 reg_data = reg_ctrl + cmpnt->val_bytes;
+	s32 *data = (s32 *)biquad_coeff_buffer;
+
+	for (i = 0; i < params->soc.num_regs; i++)
+		data[i] = (s32)ucontrol->value.integer.value[i];
+
+	pm_runtime_get_sync(cmpnt->dev);
+
+	tegra210_peq_write_ram(ope->peq_regmap, reg_ctrl, reg_data,
+			       params->shift, data, params->soc.num_regs);
+
+	pm_runtime_put_sync(cmpnt->dev);
+
+	return 1;
+}
+
+static int tegra210_peq_param_info(struct snd_kcontrol *kcontrol,
+				   struct snd_ctl_elem_info *uinfo)
+{
+	struct soc_bytes *params = (void *)kcontrol->private_value;
+
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->value.integer.min = INT_MIN;
+	uinfo->value.integer.max = INT_MAX;
+	uinfo->count = params->num_regs;
+
+	return 0;
+}
+
+#define TEGRA210_PEQ_GAIN_PARAMS_CTRL(chan)				  \
+	TEGRA_SOC_BYTES_EXT("PEQ Channel-" #chan " Biquad Gain Params",	  \
+		TEGRA210_PEQ_CFG_RAM_CTRL,				  \
+		TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH,			  \
+		(TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH * chan), 0xffffffff, \
+		tegra210_peq_ram_get, tegra210_peq_ram_put,		  \
+		tegra210_peq_param_info)
+
+#define TEGRA210_PEQ_SHIFT_PARAMS_CTRL(chan)				  \
+	TEGRA_SOC_BYTES_EXT("PEQ Channel-" #chan " Biquad Shift Params",  \
+		TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,			  \
+		TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH,			  \
+		(TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH * chan), 0x1f,	  \
+		tegra210_peq_ram_get, tegra210_peq_ram_put,		  \
+		tegra210_peq_param_info)
+
+static const struct snd_kcontrol_new tegra210_peq_controls[] = {
+	SOC_SINGLE_EXT("PEQ Active", TEGRA210_PEQ_CFG,
+		       TEGRA210_PEQ_CFG_MODE_SHIFT, 1, 0,
+		       tegra210_peq_get, tegra210_peq_put),
+
+	SOC_SINGLE_EXT("PEQ Biquad Stages", TEGRA210_PEQ_CFG,
+		       TEGRA210_PEQ_CFG_BIQUAD_STAGES_SHIFT,
+		       TEGRA210_PEQ_MAX_BIQUAD_STAGES - 1, 0,
+		       tegra210_peq_get, tegra210_peq_put),
+
+	TEGRA210_PEQ_GAIN_PARAMS_CTRL(0),
+	TEGRA210_PEQ_GAIN_PARAMS_CTRL(1),
+	TEGRA210_PEQ_GAIN_PARAMS_CTRL(2),
+	TEGRA210_PEQ_GAIN_PARAMS_CTRL(3),
+	TEGRA210_PEQ_GAIN_PARAMS_CTRL(4),
+	TEGRA210_PEQ_GAIN_PARAMS_CTRL(5),
+	TEGRA210_PEQ_GAIN_PARAMS_CTRL(6),
+	TEGRA210_PEQ_GAIN_PARAMS_CTRL(7),
+
+	TEGRA210_PEQ_SHIFT_PARAMS_CTRL(0),
+	TEGRA210_PEQ_SHIFT_PARAMS_CTRL(1),
+	TEGRA210_PEQ_SHIFT_PARAMS_CTRL(2),
+	TEGRA210_PEQ_SHIFT_PARAMS_CTRL(3),
+	TEGRA210_PEQ_SHIFT_PARAMS_CTRL(4),
+	TEGRA210_PEQ_SHIFT_PARAMS_CTRL(5),
+	TEGRA210_PEQ_SHIFT_PARAMS_CTRL(6),
+	TEGRA210_PEQ_SHIFT_PARAMS_CTRL(7),
+};
+
+static bool tegra210_peq_wr_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA210_PEQ_SOFT_RESET:
+	case TEGRA210_PEQ_CG:
+	case TEGRA210_PEQ_CFG ... TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool tegra210_peq_rd_reg(struct device *dev, unsigned int reg)
+{
+	if (tegra210_peq_wr_reg(dev, reg))
+		return true;
+
+	switch (reg) {
+	case TEGRA210_PEQ_STATUS:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool tegra210_peq_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA210_PEQ_SOFT_RESET:
+	case TEGRA210_PEQ_STATUS:
+	case TEGRA210_PEQ_CFG_RAM_CTRL ... TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool tegra210_peq_precious_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case TEGRA210_PEQ_CFG_RAM_DATA:
+	case TEGRA210_PEQ_CFG_RAM_SHIFT_DATA:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config tegra210_peq_regmap_config = {
+	.name			= "peq",
+	.reg_bits		= 32,
+	.reg_stride		= 4,
+	.val_bits		= 32,
+	.max_register		= TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
+	.writeable_reg		= tegra210_peq_wr_reg,
+	.readable_reg		= tegra210_peq_rd_reg,
+	.volatile_reg		= tegra210_peq_volatile_reg,
+	.precious_reg		= tegra210_peq_precious_reg,
+	.reg_defaults		= tegra210_peq_reg_defaults,
+	.num_reg_defaults	= ARRAY_SIZE(tegra210_peq_reg_defaults),
+	.cache_type		= REGCACHE_FLAT,
+};
+
+void tegra210_peq_restore(struct regmap *regmap, u32 *biquad_gains,
+			  u32 *biquad_shifts)
+{
+	unsigned int i;
+
+	for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
+		tegra210_peq_write_ram(regmap, TEGRA210_PEQ_CFG_RAM_CTRL,
+			TEGRA210_PEQ_CFG_RAM_DATA,
+			(i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
+			biquad_gains,
+			TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
+
+		tegra210_peq_write_ram(regmap,
+			TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
+			TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
+			(i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
+			biquad_shifts,
+			TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
+
+	}
+}
+
+void tegra210_peq_save(struct regmap *regmap, u32 *biquad_gains,
+		       u32 *biquad_shifts)
+{
+	unsigned int i;
+
+	for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
+		tegra210_peq_read_ram(regmap,
+			TEGRA210_PEQ_CFG_RAM_CTRL,
+			TEGRA210_PEQ_CFG_RAM_DATA,
+			(i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
+			biquad_gains,
+			TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
+
+		tegra210_peq_read_ram(regmap,
+			TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
+			TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
+			(i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
+			biquad_shifts,
+			TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
+	}
+}
+
+int tegra210_peq_component_init(struct snd_soc_component *cmpnt)
+{
+	struct tegra210_ope *ope = snd_soc_component_get_drvdata(cmpnt);
+	unsigned int i;
+
+	pm_runtime_get_sync(cmpnt->dev);
+	regmap_update_bits(ope->peq_regmap, TEGRA210_PEQ_CFG,
+		TEGRA210_PEQ_CFG_MODE_MASK,
+		0 << TEGRA210_PEQ_CFG_MODE_SHIFT);
+	regmap_update_bits(ope->peq_regmap, TEGRA210_PEQ_CFG,
+		TEGRA210_PEQ_CFG_BIQUAD_STAGES_MASK,
+		(TEGRA210_PEQ_BIQUAD_INIT_STAGE - 1) <<
+		TEGRA210_PEQ_CFG_BIQUAD_STAGES_SHIFT);
+
+	/* Initialize PEQ AHUB RAM with default params */
+	for (i = 0; i < TEGRA210_PEQ_MAX_CHANNELS; i++) {
+
+		/* Set default gain params */
+		tegra210_peq_write_ram(ope->peq_regmap,
+			TEGRA210_PEQ_CFG_RAM_CTRL,
+			TEGRA210_PEQ_CFG_RAM_DATA,
+			(i * TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH),
+			(u32 *)&biquad_init_gains,
+			TEGRA210_PEQ_GAIN_PARAM_SIZE_PER_CH);
+
+		/* Set default shift params */
+		tegra210_peq_write_ram(ope->peq_regmap,
+			TEGRA210_PEQ_CFG_RAM_SHIFT_CTRL,
+			TEGRA210_PEQ_CFG_RAM_SHIFT_DATA,
+			(i * TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH),
+			(u32 *)&biquad_init_shifts,
+			TEGRA210_PEQ_SHIFT_PARAM_SIZE_PER_CH);
+
+	}
+
+	pm_runtime_put_sync(cmpnt->dev);
+
+	snd_soc_add_component_controls(cmpnt, tegra210_peq_controls,
+				       ARRAY_SIZE(tegra210_peq_controls));
+
+	return 0;
+}
+
+int tegra210_peq_regmap_init(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct tegra210_ope *ope = dev_get_drvdata(dev);
+	struct device_node *child;
+	struct resource mem;
+	void __iomem *regs;
+	int err;
+
+	child = of_get_child_by_name(dev->of_node, "equalizer");
+	if (!child)
+		return -ENODEV;
+
+	err = of_address_to_resource(child, 0, &mem);
+	of_node_put(child);
+	if (err < 0) {
+		dev_err(dev, "fail to get PEQ resource\n");
+		return err;
+	}
+
+	mem.flags = IORESOURCE_MEM;
+	regs = devm_ioremap_resource(dev, &mem);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+	ope->peq_regmap = devm_regmap_init_mmio(dev, regs,
+						&tegra210_peq_regmap_config);
+	if (IS_ERR(ope->peq_regmap)) {
+		dev_err(dev, "regmap init failed\n");
+		return PTR_ERR(ope->peq_regmap);
+	}
+
+	regcache_cache_only(ope->peq_regmap, true);
+
+	return 0;
+}