This patch adds support of the ROHM BD28623MUV
Class D speaker amplifier for Flat-panel TVs.
This IC delivers an output power of 20W + 20W.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@xxxxxxxxxxxxx>
---
Changes in v2:
- Fix lisence comment style
- Use _cansleep() version for manipulating GPIO
- Use ASoC component remove() function instead of
platform remove() function to power off this IC
- Remove update function that was just alias of gpiod_set_value
---
sound/soc/codecs/Kconfig | 8 ++
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/bd28623.c | 242 +++++++++++++++++++++++++++++++++++++++++++++
3 files changed, 252 insertions(+)
create mode 100644 sound/soc/codecs/bd28623.c
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index f72a90104a58..6a53e188ead6 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -47,6 +47,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_ALC5623 if I2C
select SND_SOC_ALC5632 if I2C
select SND_SOC_BT_SCO
+ select SND_SOC_BD28623
select SND_SOC_CQ0093VC
select SND_SOC_CS35L32 if I2C
select SND_SOC_CS35L33 if I2C
@@ -418,6 +419,13 @@ config SND_SOC_ALC5623
config SND_SOC_ALC5632
tristate
+config SND_SOC_BD28623
+ tristate "ROHM BD28623 CODEC"
+ help
+ Enable support for ROHM BD28623MUV Class D speaker amplifier.
+ This codec does not have any control buses such as I2C, it
+ detect format of I2S automatically.
+
config SND_SOC_BT_SCO
tristate "Dummy BT SCO codec driver"
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 56c3252820d2..f2c710e16557 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -37,6 +37,7 @@ snd-soc-ak4671-objs := ak4671.o
snd-soc-ak5386-objs := ak5386.o
snd-soc-ak5558-objs := ak5558.o
snd-soc-arizona-objs := arizona.o
+snd-soc-bd28623-objs := bd28623.o
snd-soc-bt-sco-objs := bt-sco.o
snd-soc-cq93vc-objs := cq93vc.o
snd-soc-cs35l32-objs := cs35l32.o
@@ -285,6 +286,7 @@ obj-$(CONFIG_SND_SOC_AK5558) += snd-soc-ak5558.o
obj-$(CONFIG_SND_SOC_ALC5623) += snd-soc-alc5623.o
obj-$(CONFIG_SND_SOC_ALC5632) += snd-soc-alc5632.o
obj-$(CONFIG_SND_SOC_ARIZONA) += snd-soc-arizona.o
+obj-$(CONFIG_SND_SOC_BD28623) += snd-soc-bd28623.o
obj-$(CONFIG_SND_SOC_BT_SCO) += snd-soc-bt-sco.o
obj-$(CONFIG_SND_SOC_CQ0093VC) += snd-soc-cq93vc.o
obj-$(CONFIG_SND_SOC_CS35L32) += snd-soc-cs35l32.o
diff --git a/sound/soc/codecs/bd28623.c b/sound/soc/codecs/bd28623.c
new file mode 100644
index 000000000000..31904ef5c88b
--- /dev/null
+++ b/sound/soc/codecs/bd28623.c
@@ -0,0 +1,242 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// ROHM BD28623MUV class D speaker amplifier codec driver.
+//
+// Copyright (c) 2018 Socionext Inc.
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+
+#define BD28623_NUM_SUPPLIES 3
+
+static const char *const bd28623_supply_names[BD28623_NUM_SUPPLIES] = {
+ "VCCA",
+ "VCCP1",
+ "VCCP2",
+};
+
+struct bd28623_priv {
+ struct device *dev;
+ struct regulator_bulk_data supplies[BD28623_NUM_SUPPLIES];
+ struct gpio_desc *reset_gpio;
+ struct gpio_desc *mute_gpio;
+
+ int switch_spk;
+};
+
+static const struct snd_soc_dapm_widget bd28623_widgets[] = {
+ SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_OUTPUT("OUT1P"),
+ SND_SOC_DAPM_OUTPUT("OUT1N"),
+ SND_SOC_DAPM_OUTPUT("OUT2P"),
+ SND_SOC_DAPM_OUTPUT("OUT2N"),
+};
+
+static const struct snd_soc_dapm_route bd28623_routes[] = {
+ { "OUT1P", NULL, "DAC" },
+ { "OUT1N", NULL, "DAC" },
+ { "OUT2P", NULL, "DAC" },
+ { "OUT2N", NULL, "DAC" },
+};
+
+static int bd28623_power_on(struct bd28623_priv *bd)
+{
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(bd->supplies), bd->supplies);
+ if (ret) {
+ dev_err(bd->dev, "Failed to enable supplies: %d\n", ret);
+ return ret;
+ }
+
+ gpiod_set_value_cansleep(bd->reset_gpio, 0);
+ usleep_range(300000, 400000);
+
+ return 0;
+}
+
+static void bd28623_power_off(struct bd28623_priv *bd)
+{
+ gpiod_set_value_cansleep(bd->reset_gpio, 1);
+
+ regulator_bulk_disable(ARRAY_SIZE(bd->supplies), bd->supplies);
+}
+
+static int bd28623_get_switch_spk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component =
+ snd_soc_kcontrol_component(kcontrol);
+ struct bd28623_priv *bd = snd_soc_component_get_drvdata(component);
+
+ ucontrol->value.integer.value[0] = bd->switch_spk;
+
+ return 0;
+}
+
+static int bd28623_set_switch_spk(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component =
+ snd_soc_kcontrol_component(kcontrol);
+ struct bd28623_priv *bd = snd_soc_component_get_drvdata(component);
+
+ if (bd->switch_spk == ucontrol->value.integer.value[0])
+ return 0;
+
+ bd->switch_spk = ucontrol->value.integer.value[0];
+
+ gpiod_set_value_cansleep(bd->mute_gpio, bd->switch_spk ? 0 : 1);
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new bd28623_controls[] = {
+ SOC_SINGLE_BOOL_EXT("Speaker Switch", 0,
+ bd28623_get_switch_spk, bd28623_set_switch_spk),
+};
+
+static int bd28623_codec_probe(struct snd_soc_component *component)
+{
+ struct bd28623_priv *bd = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ bd->switch_spk = 1;
+
+ ret = bd28623_power_on(bd);
+ if (ret)
+ return ret;
+
+ gpiod_set_value_cansleep(bd->mute_gpio, bd->switch_spk ? 0 : 1);
+
+ return 0;
+}
+
+static void bd28623_codec_remove(struct snd_soc_component *component)
+{
+ struct bd28623_priv *bd = snd_soc_component_get_drvdata(component);
+
+ bd28623_power_off(bd);
+}
+
+static int bd28623_codec_suspend(struct snd_soc_component *component)
+{
+ struct bd28623_priv *bd = snd_soc_component_get_drvdata(component);
+
+ bd28623_power_off(bd);
+
+ return 0;
+}
+
+static int bd28623_codec_resume(struct snd_soc_component *component)
+{
+ struct bd28623_priv *bd = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ ret = bd28623_power_on(bd);
+ if (ret)
+ return ret;
+
+ gpiod_set_value_cansleep(bd->mute_gpio, bd->switch_spk ? 0 : 1);
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver soc_codec_bd = {
+ .probe = bd28623_codec_probe,
+ .remove = bd28623_codec_remove,
+ .suspend = bd28623_codec_suspend,
+ .resume = bd28623_codec_resume,
+ .dapm_widgets = bd28623_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(bd28623_widgets),
+ .dapm_routes = bd28623_routes,
+ .num_dapm_routes = ARRAY_SIZE(bd28623_routes),
+ .controls = bd28623_controls,
+ .num_controls = ARRAY_SIZE(bd28623_controls),
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+ .non_legacy_dai_naming = 1,
+};
+
+static struct snd_soc_dai_driver soc_dai_bd = {
+ .name = "bd28623-speaker",
+ .playback = {
+ .stream_name = "Playback",
+ .formats = SNDRV_PCM_FMTBIT_S32_LE |
+ SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S16_LE,
+ .rates = SNDRV_PCM_RATE_48000 |
+ SNDRV_PCM_RATE_44100 |
+ SNDRV_PCM_RATE_32000,
+ .channels_min = 2,
+ .channels_max = 2,
+ },
+};
+
+static int bd28623_probe(struct platform_device *pdev)
+{
+ struct bd28623_priv *bd;
+ struct device *dev = &pdev->dev;
+ int i, ret;
+
+ bd = devm_kzalloc(&pdev->dev, sizeof(struct bd28623_priv), GFP_KERNEL);
+ if (!bd)
+ return -ENOMEM;
+
+ for (i = 0; i < ARRAY_SIZE(bd->supplies); i++)
+ bd->supplies[i].supply = bd28623_supply_names[i];
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(bd->supplies),
+ bd->supplies);
+ if (ret) {
+ dev_err(dev, "Failed to get supplies: %d\n", ret);
+ return ret;
+ }
+
+ bd->reset_gpio = devm_gpiod_get_optional(dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(bd->reset_gpio)) {
+ dev_err(dev, "Failed to request reset_gpio: %ld\n",
+ PTR_ERR(bd->reset_gpio));
+ return PTR_ERR(bd->reset_gpio);
+ }
+
+ bd->mute_gpio = devm_gpiod_get_optional(dev, "mute",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(bd->mute_gpio)) {
+ dev_err(dev, "Failed to request mute_gpio: %ld\n",
+ PTR_ERR(bd->mute_gpio));
+ return PTR_ERR(bd->mute_gpio);
+ }
+
+ platform_set_drvdata(pdev, bd);
+ bd->dev = dev;
+
+ return devm_snd_soc_register_component(dev, &soc_codec_bd,
+ &soc_dai_bd, 1);
+}
+
+static const struct of_device_id bd28623_of_match[] = {
+ { .compatible = "rohm,bd28623", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, bd28623_of_match);
+
+static struct platform_driver bd28623_codec_driver = {
+ .driver = {
+ .name = "bd28623",
+ .of_match_table = of_match_ptr(bd28623_of_match),
+ },
+ .probe = bd28623_probe,
+};
+module_platform_driver(bd28623_codec_driver);
+
+MODULE_AUTHOR("Katsuhiro Suzuki <suzuki.katsuhiro@xxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("ROHM BD28623 speaker amplifier driver");
+MODULE_LICENSE("GPL v2");
--
2.16.1
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
