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Commit cc93a1a1 authored by Mark Brown's avatar Mark Brown
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ASoC: Add a driver for the Cirrus Logic CS35L45 Smart Amplifier 

Merge series from Richard Fitzgerald <rf@opensource.cirrus.com>:

This adds basic audio support for the Cirrus Logic CS35L45 amplifier.

The first two patches add two generic helpers to ASoC, and patch 3 is
a kunit test for patch 2.
parents 7704a82e 0d463d01
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Documentation/devicetree/bindings/sound/cirrus,cs35l45.yaml 0 → 100644
View file @ cc93a1a1
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/cirrus,cs35l45.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Cirrus Logic CS35L45 Speaker Amplifier
maintainers:
- Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>
- Richard Fitzgerald <rf@opensource.cirrus.com>
description: |
CS35L45 is a Boosted Mono Class D Amplifier with DSP
Speaker Protection and Adaptive Battery Management.
properties:
compatible:
enum:
- cirrus,cs35l45
reg:
maxItems: 1
'#sound-dai-cells':
const: 1
reset-gpios:
maxItems: 1
vdd-a-supply:
description: voltage regulator phandle for the VDD_A supply
vdd-batt-supply:
description: voltage regulator phandle for the VDD_BATT supply
spi-max-frequency:
maximum: 5000000
cirrus,asp-sdout-hiz-ctrl:
description:
Audio serial port SDOUT Hi-Z control. Sets the Hi-Z
configuration for SDOUT pin of amplifier. Logical OR of
CS35L45_ASP_TX_HIZ_xxx values.
$ref: "/schemas/types.yaml#/definitions/uint32"
minimum: 0
maximum: 3
default: 2
required:
- compatible
- reg
- "#sound-dai-cells"
additionalProperties: false
examples:
- |
#include <dt-bindings/sound/cs35l45.h>
spi {
#address-cells = <1>;
#size-cells = <0>;
cs35l45: cs35l45@2 {
#sound-dai-cells = <1>;
compatible = "cirrus,cs35l45";
reg = <2>;
spi-max-frequency = <5000000>;
vdd-a-supply = <&dummy_vreg>;
vdd-batt-supply = <&dummy_vreg>;
reset-gpios = <&gpio 110 0>;
cirrus,asp-sdout-hiz-ctrl = <(CS35L45_ASP_TX_HIZ_UNUSED |
CS35L45_ASP_TX_HIZ_DISABLED)>;
};
};
MAINTAINERS
View file @ cc93a1a1
......@@ -4688,10 +4688,12 @@ CIRRUS LOGIC AUDIO CODEC DRIVERS
M: James Schulman <james.schulman@cirrus.com>
M: David Rhodes <david.rhodes@cirrus.com>
M: Lucas Tanure <tanureal@opensource.cirrus.com>
M: Richard Fitzgerald <rf@opensource.cirrus.com>
L: alsa-devel@alsa-project.org (moderated for non-subscribers)
L: patches@opensource.cirrus.com
S: Maintained
F: Documentation/devicetree/bindings/sound/cirrus,cs*
F: include/dt-bindings/sound/cs*
F: sound/pci/hda/cs*
F: sound/soc/codecs/cs*
......
include/dt-bindings/sound/cs35l45.h 0 → 100644
View file @ cc93a1a1
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* cs35l45.h -- CS35L45 ALSA SoC audio driver DT bindings header
*
* Copyright 2022 Cirrus Logic, Inc.
*/
#ifndef DT_CS35L45_H
#define DT_CS35L45_H
/*
* cirrus,asp-sdout-hiz-ctrl
*
* TX_HIZ_UNUSED: TX pin high-impedance during unused slots.
* TX_HIZ_DISABLED: TX pin high-impedance when all channels disabled.
*/
#define CS35L45_ASP_TX_HIZ_UNUSED 0x1
#define CS35L45_ASP_TX_HIZ_DISABLED 0x2
#endif /* DT_CS35L45_H */
include/sound/soc.h
View file @ cc93a1a1
......@@ -176,6 +176,8 @@
.get = snd_soc_get_volsw, .put = snd_soc_put_volsw, \
.private_value = SOC_DOUBLE_R_S_VALUE(reg_left, reg_right, xshift, \
xmin, xmax, xsign_bit, xinvert) }
#define SOC_SINGLE_S_TLV(xname, xreg, xshift, xmin, xmax, xsign_bit, xinvert, tlv_array) \
SOC_DOUBLE_R_S_TLV(xname, xreg, xreg, xshift, xmin, xmax, xsign_bit, xinvert, tlv_array)
#define SOC_SINGLE_S8_TLV(xname, xreg, xmin, xmax, tlv_array) \
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = (xname), \
.access = SNDRV_CTL_ELEM_ACCESS_TLV_READ | \
......@@ -485,6 +487,8 @@ int snd_soc_calc_frame_size(int sample_size, int channels, int tdm_slots);
int snd_soc_params_to_frame_size(struct snd_pcm_hw_params *params);
int snd_soc_calc_bclk(int fs, int sample_size, int channels, int tdm_slots);
int snd_soc_params_to_bclk(struct snd_pcm_hw_params *parms);
int snd_soc_tdm_params_to_bclk(struct snd_pcm_hw_params *params,
int tdm_width, int tdm_slots, int slot_multiple);
/* set runtime hw params */
int snd_soc_set_runtime_hwparams(struct snd_pcm_substream *substream,
......
sound/soc/Kconfig
View file @ cc93a1a1
......@@ -14,7 +14,7 @@ menuconfig SND_SOC
If you want ASoC support, you should say Y here and also to the
specific driver for your SoC platform below.
ASoC provides power efficient ALSA support for embedded battery powered
SoC based systems like PDA's, Phones and Personal Media Players.
......@@ -55,6 +55,13 @@ config SND_SOC_TOPOLOGY_KUNIT_TEST
userspace applications such as pulseaudio, to prevent unnecessary
problems.
config SND_SOC_UTILS_KUNIT_TEST
tristate "KUnit tests for SoC utils"
depends on KUNIT
default KUNIT_ALL_TESTS
help
If you want to perform tests on ALSA SoC utils library say Y here.
config SND_SOC_ACPI
tristate
......
sound/soc/Makefile
View file @ cc93a1a1
......@@ -12,6 +12,11 @@ ifneq ($(CONFIG_SND_SOC_TOPOLOGY_KUNIT_TEST),)
obj-$(CONFIG_SND_SOC_TOPOLOGY_KUNIT_TEST) := soc-topology-test.o
endif
ifneq ($(CONFIG_SND_SOC_UTILS_KUNIT_TEST),)
# snd-soc-test-objs := soc-utils-test.o
obj-$(CONFIG_SND_SOC_UTILS_KUNIT_TEST) := soc-utils-test.o
endif
ifneq ($(CONFIG_SND_SOC_GENERIC_DMAENGINE_PCM),)
snd-soc-core-objs += soc-generic-dmaengine-pcm.o
endif
......
sound/soc/codecs/Kconfig
View file @ cc93a1a1
......@@ -65,6 +65,8 @@ config SND_SOC_ALL_CODECS
imply SND_SOC_CS35L36
imply SND_SOC_CS35L41_SPI
imply SND_SOC_CS35L41_I2C
imply SND_SOC_CS35L45_I2C
imply SND_SOC_CS35L45_SPI
imply SND_SOC_CS42L42
imply SND_SOC_CS42L51_I2C
imply SND_SOC_CS42L52
......@@ -656,6 +658,34 @@ config SND_SOC_CS35L41_I2C
select SND_SOC_CS35L41
select REGMAP_I2C
config SND_SOC_CS35L45_TABLES
tristate
config SND_SOC_CS35L45
tristate
config SND_SOC_CS35L45_SPI
tristate "Cirrus Logic CS35L45 CODEC (SPI)"
depends on SPI_MASTER
select REGMAP
select REGMAP_SPI
select SND_SOC_CS35L45_TABLES
select SND_SOC_CS35L45
help
Enable support for Cirrus Logic CS35L45 smart speaker amplifier
with SPI control.
config SND_SOC_CS35L45_I2C
tristate "Cirrus Logic CS35L45 CODEC (I2C)"
depends on I2C
select REGMAP
select REGMAP_I2C
select SND_SOC_CS35L45_TABLES
select SND_SOC_CS35L45
help
Enable support for Cirrus Logic CS35L45 smart speaker amplifier
with I2C control.
config SND_SOC_CS42L42
tristate "Cirrus Logic CS42L42 CODEC"
depends on I2C
......
sound/soc/codecs/Makefile
View file @ cc93a1a1
......@@ -60,6 +60,10 @@ snd-soc-cs35l41-lib-objs := cs35l41-lib.o
snd-soc-cs35l41-objs := cs35l41.o
snd-soc-cs35l41-spi-objs := cs35l41-spi.o
snd-soc-cs35l41-i2c-objs := cs35l41-i2c.o
snd-soc-cs35l45-tables-objs := cs35l45-tables.o
snd-soc-cs35l45-objs := cs35l45.o
snd-soc-cs35l45-spi-objs := cs35l45-spi.o
snd-soc-cs35l45-i2c-objs := cs35l45-i2c.o
snd-soc-cs42l42-objs := cs42l42.o
snd-soc-cs42l51-objs := cs42l51.o
snd-soc-cs42l51-i2c-objs := cs42l51-i2c.o
......@@ -406,6 +410,10 @@ obj-$(CONFIG_SND_SOC_CS35L41) += snd-soc-cs35l41.o
obj-$(CONFIG_SND_SOC_CS35L41_LIB) += snd-soc-cs35l41-lib.o
obj-$(CONFIG_SND_SOC_CS35L41_SPI) += snd-soc-cs35l41-spi.o
obj-$(CONFIG_SND_SOC_CS35L41_I2C) += snd-soc-cs35l41-i2c.o
obj-$(CONFIG_SND_SOC_CS35L45_TABLES) += snd-soc-cs35l45-tables.o
obj-$(CONFIG_SND_SOC_CS35L45) += snd-soc-cs35l45.o
obj-$(CONFIG_SND_SOC_CS35L45_SPI) += snd-soc-cs35l45-spi.o
obj-$(CONFIG_SND_SOC_CS35L45_I2C) += snd-soc-cs35l45-i2c.o
obj-$(CONFIG_SND_SOC_CS42L42) += snd-soc-cs42l42.o
obj-$(CONFIG_SND_SOC_CS42L51) += snd-soc-cs42l51.o
obj-$(CONFIG_SND_SOC_CS42L51_I2C) += snd-soc-cs42l51-i2c.o
......
sound/soc/codecs/cs35l45-i2c.c 0 → 100644
View file @ cc93a1a1
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
//
// cs35l45-i2c.c -- CS35L45 I2C driver
//
// Copyright 2019-2022 Cirrus Logic, Inc.
//
// Author: James Schulman <james.schulman@cirrus.com>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include "cs35l45.h"
static int cs35l45_i2c_probe(struct i2c_client *client)
{
struct cs35l45_private *cs35l45;
struct device *dev = &client->dev;
int ret;
cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL);
if (!cs35l45)
return -ENOMEM;
i2c_set_clientdata(client, cs35l45);
cs35l45->regmap = devm_regmap_init_i2c(client, &cs35l45_i2c_regmap);
if (IS_ERR(cs35l45->regmap)) {
ret = PTR_ERR(cs35l45->regmap);
dev_err(dev, "Failed to allocate register map: %d\n", ret);
return ret;
}
cs35l45->dev = dev;
return cs35l45_probe(cs35l45);
}
static int cs35l45_i2c_remove(struct i2c_client *client)
{
struct cs35l45_private *cs35l45 = i2c_get_clientdata(client);
return cs35l45_remove(cs35l45);
}
static const struct of_device_id cs35l45_of_match[] = {
{ .compatible = "cirrus,cs35l45" },
{},
};
MODULE_DEVICE_TABLE(of, cs35l45_of_match);
static const struct i2c_device_id cs35l45_id_i2c[] = {
{ "cs35l45", 0 },
{}
};
MODULE_DEVICE_TABLE(i2c, cs35l45_id_i2c);
static struct i2c_driver cs35l45_i2c_driver = {
.driver = {
.name = "cs35l45",
.of_match_table = cs35l45_of_match,
.pm = &cs35l45_pm_ops,
},
.id_table = cs35l45_id_i2c,
.probe_new = cs35l45_i2c_probe,
.remove = cs35l45_i2c_remove,
};
module_i2c_driver(cs35l45_i2c_driver);
MODULE_DESCRIPTION("I2C CS35L45 driver");
MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
MODULE_LICENSE("Dual BSD/GPL");
sound/soc/codecs/cs35l45-spi.c 0 → 100644
View file @ cc93a1a1
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
//
// cs35l45-spi.c -- CS35L45 SPI driver
//
// Copyright 2019-2022 Cirrus Logic, Inc.
//
// Author: James Schulman <james.schulman@cirrus.com>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/spi/spi.h>
#include "cs35l45.h"
static int cs35l45_spi_probe(struct spi_device *spi)
{
struct cs35l45_private *cs35l45;
struct device *dev = &spi->dev;
int ret;
cs35l45 = devm_kzalloc(dev, sizeof(struct cs35l45_private), GFP_KERNEL);
if (cs35l45 == NULL)
return -ENOMEM;
spi_set_drvdata(spi, cs35l45);
cs35l45->regmap = devm_regmap_init_spi(spi, &cs35l45_spi_regmap);
if (IS_ERR(cs35l45->regmap)) {
ret = PTR_ERR(cs35l45->regmap);
dev_err(dev, "Failed to allocate register map: %d\n", ret);
return ret;
}
cs35l45->dev = dev;
return cs35l45_probe(cs35l45);
}
static void cs35l45_spi_remove(struct spi_device *spi)
{
struct cs35l45_private *cs35l45 = spi_get_drvdata(spi);
cs35l45_remove(cs35l45);
}
static const struct of_device_id cs35l45_of_match[] = {
{ .compatible = "cirrus,cs35l45" },
{},
};
MODULE_DEVICE_TABLE(of, cs35l45_of_match);
static const struct spi_device_id cs35l45_id_spi[] = {
{ "cs35l45", 0 },
{}
};
MODULE_DEVICE_TABLE(spi, cs35l45_id_spi);
static struct spi_driver cs35l45_spi_driver = {
.driver = {
.name = "cs35l45",
.of_match_table = cs35l45_of_match,
.pm = &cs35l45_pm_ops,
},
.id_table = cs35l45_id_spi,
.probe = cs35l45_spi_probe,
.remove = cs35l45_spi_remove,
};
module_spi_driver(cs35l45_spi_driver);
MODULE_DESCRIPTION("SPI CS35L45 driver");
MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
MODULE_LICENSE("Dual BSD/GPL");
sound/soc/codecs/cs35l45-tables.c 0 → 100644
View file @ cc93a1a1
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
//
// cs35l45-tables.c -- CS35L45 ALSA SoC audio driver
//
// Copyright 2019-2022 Cirrus Logic, Inc.
//
// Author: James Schulman <james.schulman@cirrus.com>
#include <linux/module.h>
#include <linux/regmap.h>
#include "cs35l45.h"
static const struct reg_sequence cs35l45_patch[] = {
{ 0x00000040, 0x00000055 },
{ 0x00000040, 0x000000AA },
{ 0x00000044, 0x00000055 },
{ 0x00000044, 0x000000AA },
{ 0x00006480, 0x0830500A },
{ 0x00007C60, 0x1000850B },
{ CS35L45_BOOST_OV_CFG, 0x007000D0 },
{ CS35L45_LDPM_CONFIG, 0x0001B636 },
{ 0x00002C08, 0x00000009 },
{ 0x00006850, 0x0A30FFC4 },
{ 0x00003820, 0x00040100 },
{ 0x00003824, 0x00000000 },
{ 0x00007CFC, 0x62870004 },
{ 0x00007C60, 0x1001850B },
{ 0x00000040, 0x00000000 },
{ 0x00000044, 0x00000000 },
{ CS35L45_BOOST_CCM_CFG, 0xF0000003 },
{ CS35L45_BOOST_DCM_CFG, 0x08710220 },
{ CS35L45_ERROR_RELEASE, 0x00200000 },
};
int cs35l45_apply_patch(struct cs35l45_private *cs35l45)
{
return regmap_register_patch(cs35l45->regmap, cs35l45_patch,
ARRAY_SIZE(cs35l45_patch));
}
EXPORT_SYMBOL_GPL(cs35l45_apply_patch);
static const struct reg_default cs35l45_defaults[] = {
{ CS35L45_BLOCK_ENABLES, 0x00003323 },
{ CS35L45_BLOCK_ENABLES2, 0x00000010 },
{ CS35L45_REFCLK_INPUT, 0x00000510 },
{ CS35L45_GLOBAL_SAMPLE_RATE, 0x00000003 },
{ CS35L45_ASP_ENABLES1, 0x00000000 },
{ CS35L45_ASP_CONTROL1, 0x00000028 },
{ CS35L45_ASP_CONTROL2, 0x18180200 },
{ CS35L45_ASP_CONTROL3, 0x00000002 },
{ CS35L45_ASP_FRAME_CONTROL1, 0x03020100 },
{ CS35L45_ASP_FRAME_CONTROL2, 0x00000004 },
{ CS35L45_ASP_FRAME_CONTROL5, 0x00000100 },
{ CS35L45_ASP_DATA_CONTROL1, 0x00000018 },
{ CS35L45_ASP_DATA_CONTROL5, 0x00000018 },
{ CS35L45_DACPCM1_INPUT, 0x00000008 },
{ CS35L45_ASPTX1_INPUT, 0x00000018 },
{ CS35L45_ASPTX2_INPUT, 0x00000019 },
{ CS35L45_ASPTX3_INPUT, 0x00000020 },
{ CS35L45_ASPTX4_INPUT, 0x00000028 },
{ CS35L45_ASPTX5_INPUT, 0x00000048 },
{ CS35L45_AMP_PCM_CONTROL, 0x00100000 },
};
static bool cs35l45_readable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case CS35L45_DEVID ... CS35L45_OTPID:
case CS35L45_SFT_RESET:
case CS35L45_GLOBAL_ENABLES:
case CS35L45_BLOCK_ENABLES:
case CS35L45_BLOCK_ENABLES2:
case CS35L45_ERROR_RELEASE:
case CS35L45_REFCLK_INPUT:
case CS35L45_GLOBAL_SAMPLE_RATE:
case CS35L45_ASP_ENABLES1:
case CS35L45_ASP_CONTROL1:
case CS35L45_ASP_CONTROL2:
case CS35L45_ASP_CONTROL3:
case CS35L45_ASP_FRAME_CONTROL1:
case CS35L45_ASP_FRAME_CONTROL2:
case CS35L45_ASP_FRAME_CONTROL5:
case CS35L45_ASP_DATA_CONTROL1:
case CS35L45_ASP_DATA_CONTROL5:
case CS35L45_DACPCM1_INPUT:
case CS35L45_ASPTX1_INPUT:
case CS35L45_ASPTX2_INPUT:
case CS35L45_ASPTX3_INPUT:
case CS35L45_ASPTX4_INPUT:
case CS35L45_ASPTX5_INPUT:
case CS35L45_AMP_PCM_CONTROL:
case CS35L45_AMP_PCM_HPF_TST:
case CS35L45_IRQ1_EINT_4:
return true;
default:
return false;
}
}
static bool cs35l45_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case CS35L45_DEVID ... CS35L45_OTPID:
case CS35L45_SFT_RESET:
case CS35L45_GLOBAL_ENABLES:
case CS35L45_ERROR_RELEASE:
case CS35L45_AMP_PCM_HPF_TST: /* not cachable */
case CS35L45_IRQ1_EINT_4:
return true;
default:
return false;
}
}
const struct regmap_config cs35l45_i2c_regmap = {
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.reg_format_endian = REGMAP_ENDIAN_BIG,
.val_format_endian = REGMAP_ENDIAN_BIG,
.max_register = CS35L45_LASTREG,
.reg_defaults = cs35l45_defaults,
.num_reg_defaults = ARRAY_SIZE(cs35l45_defaults),
.volatile_reg = cs35l45_volatile_reg,
.readable_reg = cs35l45_readable_reg,
.cache_type = REGCACHE_RBTREE,
};
EXPORT_SYMBOL_GPL(cs35l45_i2c_regmap);
const struct regmap_config cs35l45_spi_regmap = {
.reg_bits = 32,
.val_bits = 32,
.pad_bits = 16,
.reg_stride = 4,
.reg_format_endian = REGMAP_ENDIAN_BIG,
.val_format_endian = REGMAP_ENDIAN_BIG,
.max_register = CS35L45_LASTREG,
.reg_defaults = cs35l45_defaults,
.num_reg_defaults = ARRAY_SIZE(cs35l45_defaults),
.volatile_reg = cs35l45_volatile_reg,
.readable_reg = cs35l45_readable_reg,
.cache_type = REGCACHE_RBTREE,
};
EXPORT_SYMBOL_GPL(cs35l45_spi_regmap);
static const struct {
u8 cfg_id;
u32 freq;
} cs35l45_pll_refclk_freq[] = {
{ 0x0C, 128000 },
{ 0x0F, 256000 },
{ 0x11, 384000 },
{ 0x12, 512000 },
{ 0x15, 768000 },
{ 0x17, 1024000 },
{ 0x19, 1411200 },
{ 0x1B, 1536000 },
{ 0x1C, 2116800 },
{ 0x1D, 2048000 },
{ 0x1E, 2304000 },
{ 0x1F, 2822400 },
{ 0x21, 3072000 },
{ 0x23, 4233600 },
{ 0x24, 4096000 },
{ 0x25, 4608000 },
{ 0x26, 5644800 },
{ 0x27, 6000000 },
{ 0x28, 6144000 },
{ 0x29, 6350400 },
{ 0x2A, 6912000 },
{ 0x2D, 7526400 },
{ 0x2E, 8467200 },
{ 0x2F, 8192000 },
{ 0x30, 9216000 },
{ 0x31, 11289600 },
{ 0x33, 12288000 },
{ 0x37, 16934400 },
{ 0x38, 18432000 },
{ 0x39, 22579200 },
{ 0x3B, 24576000 },
};
unsigned int cs35l45_get_clk_freq_id(unsigned int freq)
{
int i;
if (freq == 0)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(cs35l45_pll_refclk_freq); ++i) {
if (cs35l45_pll_refclk_freq[i].freq == freq)
return cs35l45_pll_refclk_freq[i].cfg_id;
}
return -EINVAL;
}
EXPORT_SYMBOL_GPL(cs35l45_get_clk_freq_id);
MODULE_DESCRIPTION("ASoC CS35L45 driver tables");
MODULE_AUTHOR("James Schulman, Cirrus Logic Inc, <james.schulman@cirrus.com>");
MODULE_LICENSE("Dual BSD/GPL");
sound/soc/codecs/cs35l45.c 0 → 100644
View file @ cc93a1a1
This diff is collapsed.
sound/soc/codecs/cs35l45.h 0 → 100644
View file @ cc93a1a1
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
/*
* cs35l45.h - CS35L45 ALSA SoC audio driver
*
* Copyright 2019-2022 Cirrus Logic, Inc.
*
* Author: James Schulman <james.schulman@cirrus.com>
*
*/
#ifndef CS35L45_H
#define CS35L45_H
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#define CS35L45_DEVID 0x00000000
#define CS35L45_REVID 0x00000004
#define CS35L45_RELID 0x0000000C
#define CS35L45_OTPID 0x00000010
#define CS35L45_SFT_RESET 0x00000020
#define CS35L45_GLOBAL_ENABLES 0x00002014
#define CS35L45_BLOCK_ENABLES 0x00002018
#define CS35L45_BLOCK_ENABLES2 0x0000201C
#define CS35L45_ERROR_RELEASE 0x00002034
#define CS35L45_REFCLK_INPUT 0x00002C04
#define CS35L45_GLOBAL_SAMPLE_RATE 0x00002C0C
#define CS35L45_BOOST_CCM_CFG 0x00003808
#define CS35L45_BOOST_DCM_CFG 0x0000380C
#define CS35L45_BOOST_OV_CFG 0x0000382C
#define CS35L45_ASP_ENABLES1 0x00004800
#define CS35L45_ASP_CONTROL1 0x00004804
#define CS35L45_ASP_CONTROL2 0x00004808
#define CS35L45_ASP_CONTROL3 0x0000480C
#define CS35L45_ASP_FRAME_CONTROL1 0x00004810
#define CS35L45_ASP_FRAME_CONTROL2 0x00004814
#define CS35L45_ASP_FRAME_CONTROL5 0x00004820
#define CS35L45_ASP_DATA_CONTROL1 0x00004830
#define CS35L45_ASP_DATA_CONTROL5 0x00004840
#define CS35L45_DACPCM1_INPUT 0x00004C00
#define CS35L45_ASPTX1_INPUT 0x00004C20
#define CS35L45_ASPTX2_INPUT 0x00004C24
#define CS35L45_ASPTX3_INPUT 0x00004C28
#define CS35L45_ASPTX4_INPUT 0x00004C2C
#define CS35L45_ASPTX5_INPUT 0x00004C30
#define CS35L45_LDPM_CONFIG 0x00006404
#define CS35L45_AMP_PCM_CONTROL 0x00007000
#define CS35L45_AMP_PCM_HPF_TST 0x00007004
#define CS35L45_IRQ1_EINT_4 0x0000E01C
#define CS35L45_LASTREG 0x0000E01C
/* SFT_RESET */
#define CS35L45_SOFT_RESET_TRIGGER 0x5A000000
/* GLOBAL_ENABLES */
#define CS35L45_GLOBAL_EN_SHIFT 0
#define CS35L45_GLOBAL_EN_MASK BIT(0)
/* BLOCK_ENABLES */
#define CS35L45_IMON_EN_SHIFT 13
#define CS35L45_VMON_EN_SHIFT 12
#define CS35L45_VDD_BSTMON_EN_SHIFT 9
#define CS35L45_VDD_BATTMON_EN_SHIFT 8
#define CS35L45_BST_EN_SHIFT 4
#define CS35L45_BST_EN_MASK GENMASK(5, 4)
#define CS35L45_BST_DISABLE_FET_ON 0x01
/* BLOCK_ENABLES2 */
#define CS35L45_ASP_EN_SHIFT 27
/* ERROR_RELEASE */
#define CS35L45_GLOBAL_ERR_RLS_MASK BIT(11)
/* REFCLK_INPUT */
#define CS35L45_PLL_FORCE_EN_SHIFT 16
#define CS35L45_PLL_FORCE_EN_MASK BIT(16)
#define CS35L45_PLL_OPEN_LOOP_SHIFT 11
#define CS35L45_PLL_OPEN_LOOP_MASK BIT(11)
#define CS35L45_PLL_REFCLK_FREQ_SHIFT 5
#define CS35L45_PLL_REFCLK_FREQ_MASK GENMASK(10, 5)
#define CS35L45_PLL_REFCLK_EN_SHIFT 4
#define CS35L45_PLL_REFCLK_EN_MASK BIT(4)
#define CS35L45_PLL_REFCLK_SEL_SHIFT 0
#define CS35L45_PLL_REFCLK_SEL_MASK GENMASK(2, 0)
#define CS35L45_PLL_REFCLK_SEL_BCLK 0x0
/* GLOBAL_SAMPLE_RATE */
#define CS35L45_GLOBAL_FS_SHIFT 0
#define CS35L45_GLOBAL_FS_MASK GENMASK(4, 0)
#define CS35L45_48P0_KHZ 0x03
#define CS35L45_96P0_KHZ 0x04
#define CS35L45_44P100_KHZ 0x0B
#define CS35L45_88P200_KHZ 0x0C
/* ASP_ENABLES_1 */
#define CS35L45_ASP_RX2_EN_SHIFT 17
#define CS35L45_ASP_RX1_EN_SHIFT 16
#define CS35L45_ASP_TX5_EN_SHIFT 4
#define CS35L45_ASP_TX4_EN_SHIFT 3
#define CS35L45_ASP_TX3_EN_SHIFT 2
#define CS35L45_ASP_TX2_EN_SHIFT 1
#define CS35L45_ASP_TX1_EN_SHIFT 0
/* ASP_CONTROL2 */
#define CS35L45_ASP_WIDTH_RX_SHIFT 24
#define CS35L45_ASP_WIDTH_RX_MASK GENMASK(31, 24)
#define CS35L45_ASP_WIDTH_TX_SHIFT 16
#define CS35L45_ASP_WIDTH_TX_MASK GENMASK(23, 16)
#define CS35L45_ASP_FMT_SHIFT 8
#define CS35L45_ASP_FMT_MASK GENMASK(10, 8)
#define CS35L45_ASP_BCLK_INV_SHIFT 6
#define CS35L45_ASP_BCLK_INV_MASK BIT(6)
#define CS35L45_ASP_FSYNC_INV_SHIFT 2
#define CS35L45_ASP_FSYNC_INV_MASK BIT(2)
#define CS35l45_ASP_FMT_DSP_A 0
#define CS35L45_ASP_FMT_I2S 2
/* ASP_CONTROL3 */
#define CS35L45_ASP_DOUT_HIZ_CTRL_SHIFT 0
#define CS35L45_ASP_DOUT_HIZ_CTRL_MASK GENMASK(1, 0)
/* ASP_FRAME_CONTROL1 */
#define CS35L45_ASP_TX4_SLOT_SHIFT 24
#define CS35L45_ASP_TX4_SLOT_MASK GENMASK(29, 24)
#define CS35L45_ASP_TX3_SLOT_SHIFT 16
#define CS35L45_ASP_TX3_SLOT_MASK GENMASK(21, 16)
#define CS35L45_ASP_TX2_SLOT_SHIFT 8
#define CS35L45_ASP_TX2_SLOT_MASK GENMASK(13, 8)
#define CS35L45_ASP_TX1_SLOT_SHIFT 0
#define CS35L45_ASP_TX1_SLOT_MASK GENMASK(5, 0)
#define CS35L45_ASP_TX_ALL_SLOTS (CS35L45_ASP_TX4_SLOT_MASK | \
CS35L45_ASP_TX3_SLOT_MASK | \
CS35L45_ASP_TX2_SLOT_MASK | \
CS35L45_ASP_TX1_SLOT_MASK)
/* ASP_FRAME_CONTROL5 */
#define CS35L45_ASP_RX2_SLOT_SHIFT 8
#define CS35L45_ASP_RX2_SLOT_MASK GENMASK(13, 8)
#define CS35L45_ASP_RX1_SLOT_SHIFT 0
#define CS35L45_ASP_RX1_SLOT_MASK GENMASK(5, 0)
#define CS35L45_ASP_RX_ALL_SLOTS (CS35L45_ASP_RX2_SLOT_MASK | \
CS35L45_ASP_RX1_SLOT_MASK)
/* ASP_DATA_CONTROL1 */
/* ASP_DATA_CONTROL5 */
#define CS35L45_ASP_WL_SHIFT 0
#define CS35L45_ASP_WL_MASK GENMASK(5, 0)
/* AMP_PCM_CONTROL */
#define CS35L45_AMP_VOL_PCM_SHIFT 0
#define CS35L45_AMP_VOL_PCM_WIDTH 11
/* AMP_PCM_HPF_TST */
#define CS35l45_HPF_DEFAULT 0x00000000
#define CS35L45_HPF_44P1 0x000108BD
#define CS35L45_HPF_88P2 0x0001045F
/* IRQ1_EINT_4 */
#define CS35L45_OTP_BOOT_DONE_STS_MASK BIT(1)
#define CS35L45_OTP_BUSY_MASK BIT(0)
/* Mixer sources */
#define CS35L45_PCM_SRC_MASK 0x7F
#define CS35L45_PCM_SRC_ZERO 0x00
#define CS35L45_PCM_SRC_ASP_RX1 0x08
#define CS35L45_PCM_SRC_ASP_RX2 0x09
#define CS35L45_PCM_SRC_VMON 0x18
#define CS35L45_PCM_SRC_IMON 0x19
#define CS35L45_PCM_SRC_ERR_VOL 0x20
#define CS35L45_PCM_SRC_CLASSH_TGT 0x21
#define CS35L45_PCM_SRC_VDD_BATTMON 0x28
#define CS35L45_PCM_SRC_VDD_BSTMON 0x29
#define CS35L45_PCM_SRC_TEMPMON 0x3A
#define CS35L45_PCM_SRC_INTERPOLATOR 0x40
#define CS35L45_PCM_SRC_IL_TARGET 0x48
#define CS35L45_RESET_HOLD_US 2000
#define CS35L45_RESET_US 2000
#define CS35L45_POST_GLOBAL_EN_US 5000
#define CS35L45_PRE_GLOBAL_DIS_US 3000
#define CS35L45_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | \
SNDRV_PCM_FMTBIT_S24_3LE| \
SNDRV_PCM_FMTBIT_S24_LE)
#define CS35L45_RATES (SNDRV_PCM_RATE_44100 | \
SNDRV_PCM_RATE_48000 | \
SNDRV_PCM_RATE_88200 | \
SNDRV_PCM_RATE_96000)
struct cs35l45_private {
struct device *dev;
struct regmap *regmap;
struct gpio_desc *reset_gpio;
struct regulator *vdd_batt;
struct regulator *vdd_a;
bool initialized;
bool sysclk_set;
u8 slot_width;
u8 slot_count;
};
extern const struct dev_pm_ops cs35l45_pm_ops;
extern const struct regmap_config cs35l45_i2c_regmap;
extern const struct regmap_config cs35l45_spi_regmap;
int cs35l45_apply_patch(struct cs35l45_private *cs43l45);
unsigned int cs35l45_get_clk_freq_id(unsigned int freq);
int cs35l45_probe(struct cs35l45_private *cs35l45);
int cs35l45_remove(struct cs35l45_private *cs35l45);
#endif /* CS35L45_H */
sound/soc/soc-utils-test.c 0 → 100644
View file @ cc93a1a1
// SPDX-License-Identifier: GPL-2.0-only
// Copyright (C) 2022 Cirrus Logic, Inc. and
// Cirrus Logic International Semiconductor Ltd.
#include <kunit/test.h>
#include <linux/module.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <uapi/sound/asound.h>
static const struct {
u32 rate;
snd_pcm_format_t fmt;
u8 channels;
u8 tdm_width;
u8 tdm_slots;
u8 slot_multiple;
u32 bclk;
} tdm_params_to_bclk_cases[] = {
/* rate fmt channels tdm_width tdm_slots slot_multiple bclk */
/* From params only */
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 0, 128000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 0, 256000 },
{ 8000, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 0, 192000 },
{ 8000, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 0, 384000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 0, 256000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 0, 512000 },
{ 44100, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 0, 705600 },
{ 44100, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 0, 1411200 },
{ 44100, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 0, 1058400 },
{ 44100, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 0, 2116800 },
{ 44100, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 0, 1411200 },
{ 44100, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 0, 2822400 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 0, 6144000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 0, 12288000 },
{ 384000, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 0, 9216000 },
{ 384000, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 0, 18432000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 0, 12288000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 0, 24576000 },
/* I2S from params */
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 2, 256000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 2, 256000 },
{ 8000, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 2, 384000 },
{ 8000, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 2, 384000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 2, 512000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 2, 512000 },
{ 44100, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 2, 1411200 },
{ 44100, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 2, 1411200 },
{ 44100, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 2, 2116800 },
{ 44100, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 2, 2116800 },
{ 44100, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 2, 2822400 },
{ 44100, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 2, 2822400 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 0, 2, 12288000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 0, 2, 12288000 },
{ 384000, SNDRV_PCM_FORMAT_S24_LE, 1, 0, 0, 2, 18432000 },
{ 384000, SNDRV_PCM_FORMAT_S24_LE, 2, 0, 0, 2, 18432000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 0, 2, 24576000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 0, 2, 24576000 },
/* Fixed 8-slot TDM, other values from params */
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 8, 0, 1024000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 8, 0, 1024000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 3, 0, 8, 0, 1024000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 4, 0, 8, 0, 1024000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 8, 0, 2048000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 8, 0, 2048000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 3, 0, 8, 0, 2048000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 4, 0, 8, 0, 2048000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 1, 0, 8, 0, 49152000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 2, 0, 8, 0, 49152000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 3, 0, 8, 0, 49152000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 4, 0, 8, 0, 49152000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 1, 0, 8, 0, 98304000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 2, 0, 8, 0, 98304000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 3, 0, 8, 0, 98304000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 4, 0, 8, 0, 98304000 },
/* Fixed 32-bit TDM, other values from params */
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 32, 0, 0, 256000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 32, 0, 0, 512000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 3, 32, 0, 0, 768000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 4, 32, 0, 0, 1024000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 1, 32, 0, 0, 256000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 2, 32, 0, 0, 512000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 3, 32, 0, 0, 768000 },
{ 8000, SNDRV_PCM_FORMAT_S32_LE, 4, 32, 0, 0, 1024000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 1, 32, 0, 0, 12288000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 2, 32, 0, 0, 24576000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 3, 32, 0, 0, 36864000 },
{ 384000, SNDRV_PCM_FORMAT_S16_LE, 4, 32, 0, 0, 49152000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 1, 32, 0, 0, 12288000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 2, 32, 0, 0, 24576000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 3, 32, 0, 0, 36864000 },
{ 384000, SNDRV_PCM_FORMAT_S32_LE, 4, 32, 0, 0, 49152000 },
/* Fixed 6-slot 24-bit TDM, other values from params */
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 1, 24, 6, 0, 1152000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 2, 24, 6, 0, 1152000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 3, 24, 6, 0, 1152000 },
{ 8000, SNDRV_PCM_FORMAT_S16_LE, 4, 24, 6, 0, 1152000 },
{ 8000, SNDRV_PCM_FORMAT_S24_LE, 1, 24, 6, 0, 1152000 },
{ 8000, SNDRV_PCM_FORMAT_S24_LE, 2, 24, 6, 0, 1152000 },
{ 8000, SNDRV_PCM_FORMAT_S24_LE, 3, 24, 6, 0, 1152000 },
{ 8000, SNDRV_PCM_FORMAT_S24_LE, 4, 24, 6, 0, 1152000 },
{ 192000, SNDRV_PCM_FORMAT_S16_LE, 1, 24, 6, 0, 27648000 },
{ 192000, SNDRV_PCM_FORMAT_S16_LE, 2, 24, 6, 0, 27648000 },
{ 192000, SNDRV_PCM_FORMAT_S16_LE, 3, 24, 6, 0, 27648000 },
{ 192000, SNDRV_PCM_FORMAT_S16_LE, 4, 24, 6, 0, 27648000 },
{ 192000, SNDRV_PCM_FORMAT_S24_LE, 1, 24, 6, 0, 27648000 },
{ 192000, SNDRV_PCM_FORMAT_S24_LE, 2, 24, 6, 0, 27648000 },
{ 192000, SNDRV_PCM_FORMAT_S24_LE, 3, 24, 6, 0, 27648000 },
{ 192000, SNDRV_PCM_FORMAT_S24_LE, 4, 24, 6, 0, 27648000 },
};
static void test_tdm_params_to_bclk_one(struct kunit *test,
unsigned int rate, snd_pcm_format_t fmt,
unsigned int channels,
unsigned int tdm_width, unsigned int tdm_slots,
unsigned int slot_multiple,
unsigned int expected_bclk)
{
struct snd_pcm_hw_params params;
int got_bclk;
_snd_pcm_hw_params_any(&params);
snd_mask_none(hw_param_mask(&params, SNDRV_PCM_HW_PARAM_FORMAT));
hw_param_interval(&params, SNDRV_PCM_HW_PARAM_RATE)->min = rate;
hw_param_interval(&params, SNDRV_PCM_HW_PARAM_RATE)->max = rate;
hw_param_interval(&params, SNDRV_PCM_HW_PARAM_CHANNELS)->min = channels;
hw_param_interval(&params, SNDRV_PCM_HW_PARAM_CHANNELS)->max = channels;
params_set_format(&params, fmt);
got_bclk = snd_soc_tdm_params_to_bclk(&params, tdm_width, tdm_slots, slot_multiple);
pr_debug("%s: r=%u sb=%u ch=%u tw=%u ts=%u sm=%u expected=%u got=%d\n",
__func__,
rate, params_width(&params), channels, tdm_width, tdm_slots, slot_multiple,
expected_bclk, got_bclk);
KUNIT_ASSERT_EQ(test, expected_bclk, (unsigned int)got_bclk);
}
static void test_tdm_params_to_bclk(struct kunit *test)
{
int i;
for (i = 0; i < ARRAY_SIZE(tdm_params_to_bclk_cases); ++i) {
test_tdm_params_to_bclk_one(test,
tdm_params_to_bclk_cases[i].rate,
tdm_params_to_bclk_cases[i].fmt,
tdm_params_to_bclk_cases[i].channels,
tdm_params_to_bclk_cases[i].tdm_width,
tdm_params_to_bclk_cases[i].tdm_slots,
tdm_params_to_bclk_cases[i].slot_multiple,
tdm_params_to_bclk_cases[i].bclk);
if (tdm_params_to_bclk_cases[i].slot_multiple > 0)
continue;
/* Slot multiple 1 should have the same effect as multiple 0 */
test_tdm_params_to_bclk_one(test,
tdm_params_to_bclk_cases[i].rate,
tdm_params_to_bclk_cases[i].fmt,
tdm_params_to_bclk_cases[i].channels,
tdm_params_to_bclk_cases[i].tdm_width,
tdm_params_to_bclk_cases[i].tdm_slots,
1,
tdm_params_to_bclk_cases[i].bclk);
}
}
static struct kunit_case soc_utils_test_cases[] = {
KUNIT_CASE(test_tdm_params_to_bclk),
{}
};
static struct kunit_suite soc_utils_test_suite = {
.name = "soc-utils",
.test_cases = soc_utils_test_cases,
};
kunit_test_suites(&soc_utils_test_suite);
MODULE_DESCRIPTION("ASoC soc-utils kunit test");
MODULE_LICENSE("GPL");
sound/soc/soc-utils.c
View file @ cc93a1a1
......@@ -9,6 +9,7 @@
#include <linux/platform_device.h>
#include <linux/export.h>
#include <linux/math.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
......@@ -52,6 +53,50 @@ int snd_soc_params_to_bclk(struct snd_pcm_hw_params *params)
}
EXPORT_SYMBOL_GPL(snd_soc_params_to_bclk);
/**
* snd_soc_tdm_params_to_bclk - calculate bclk from params and tdm slot info.
*
* Calculate the bclk from the params sample rate and the tdm slot count and
* tdm slot width. Either or both of tdm_width and tdm_slots can be 0.
*
* If tdm_width == 0 and tdm_slots > 0: the params_width will be used.
* If tdm_width > 0 and tdm_slots == 0: the params_channels will be used
* as the slot count.
* Both tdm_width and tdm_slots are 0: this is equivalent to calling
* snd_soc_params_to_bclk().
*
* If slot_multiple > 1 the slot count (or params_channels if tdm_slots == 0)
* will be rounded up to a multiple of this value. This is mainly useful for
* I2S mode, which has a left and right phase so the number of slots is always
* a multiple of 2.
*
* @params: Pointer to struct_pcm_hw_params.
* @tdm_width: Width in bits of the tdm slots.
* @tdm_slots: Number of tdm slots per frame.
* @slot_multiple: If >1 roundup slot count to a multiple of this value.
*
* Return: bclk frequency in Hz, else a negative error code if params format
* is invalid.
*/
int snd_soc_tdm_params_to_bclk(struct snd_pcm_hw_params *params,
int tdm_width, int tdm_slots, int slot_multiple)
{
if (!tdm_slots)
tdm_slots = params_channels(params);
if (slot_multiple > 1)
tdm_slots = roundup(tdm_slots, slot_multiple);
if (!tdm_width) {
tdm_width = snd_pcm_format_width(params_format(params));
if (tdm_width < 0)
return tdm_width;
}
return snd_soc_calc_bclk(params_rate(params), tdm_width, 1, tdm_slots);
}
EXPORT_SYMBOL_GPL(snd_soc_tdm_params_to_bclk);
static const struct snd_pcm_hardware dummy_dma_hardware = {
/* Random values to keep userspace happy when checking constraints */
.info = SNDRV_PCM_INFO_INTERLEAVED |
......
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