ASoC: codecs: Add support for Richtek rt9123p

Add codec driver for Richtek rt9123p.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://patch.msgid.link/d10c08abb3e92598ce7ff3663db7dd70ec2d3c65.1744245663.git.cy_huang@richtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index f11d29f3a8ebf7f16c0afc35d9a11a099f7b3614..e440b489cd79339acbb3ea6cd07f1fb605482aaa 100644 (file)
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -1832,6 +1832,12 @@ config SND_SOC_RT9123
          Enable support for the I2C control mode of Richtek RT9123 3.2W mono
          Class-D audio amplifier.
 
+config SND_SOC_RT9123P
+       tristate "Richtek RT9123P Mono Class-D Amplifier"
+       help
+         Enable support for the HW control mode of Richtek RT9123P 3.2W mono
+         Class-D audio amplifier.
+
 config SND_SOC_RTQ9128
        tristate "Richtek RTQ9128 45W Digital Input Amplifier"
        depends on I2C

diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index d8d0bc367af84a01417297ac1c709278f6fd9d1f..fba69970180465261915c20b70acca271b22f608 100644 (file)
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -271,6 +271,7 @@ snd-soc-rt721-sdca-y := rt721-sdca.o rt721-sdca-sdw.o
 snd-soc-rt722-sdca-y := rt722-sdca.o rt722-sdca-sdw.o
 snd-soc-rt9120-y := rt9120.o
 snd-soc-rt9123-y := rt9123.o
+snd-soc-rt9123p-y := rt9123p.o
 snd-soc-rtq9128-y := rtq9128.o
 snd-soc-sdw-mockup-y := sdw-mockup.o
 snd-soc-sgtl5000-y := sgtl5000.o
@@ -686,6 +687,7 @@ obj-$(CONFIG_SND_SOC_RT721_SDCA_SDW)     += snd-soc-rt721-sdca.o
 obj-$(CONFIG_SND_SOC_RT722_SDCA_SDW)     += snd-soc-rt722-sdca.o
 obj-$(CONFIG_SND_SOC_RT9120)   += snd-soc-rt9120.o
 obj-$(CONFIG_SND_SOC_RT9123)   += snd-soc-rt9123.o
+obj-$(CONFIG_SND_SOC_RT9123P)  += snd-soc-rt9123p.o
 obj-$(CONFIG_SND_SOC_RTQ9128)  += snd-soc-rtq9128.o
 obj-$(CONFIG_SND_SOC_SDW_MOCKUP)     += snd-soc-sdw-mockup.o
 obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o

diff --git a/sound/soc/codecs/rt9123p.c b/sound/soc/codecs/rt9123p.c
new file mode 100644 (file)
index 0000000..d509659
--- /dev/null
+++ b/sound/soc/codecs/rt9123p.c
@@ -0,0 +1,171 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// rt9123p.c -- RT9123 (HW Mode) ALSA SoC Codec driver
+//
+// Author: ChiYuan Huang <cy_huang@richtek.com>
+
+#include <linux/acpi.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dai.h>
+#include <sound/soc-dapm.h>
+
+struct rt9123p_priv {
+       struct gpio_desc *enable;
+       unsigned int enable_delay;
+       int enable_switch;
+};
+
+static int rt9123p_daiops_trigger(struct snd_pcm_substream *substream, int cmd,
+                                 struct snd_soc_dai *dai)
+{
+       struct snd_soc_component *comp = dai->component;
+       struct rt9123p_priv *rt9123p = snd_soc_component_get_drvdata(comp);
+
+       if (!rt9123p->enable)
+               return 0;
+
+       switch (cmd) {
+       case SNDRV_PCM_TRIGGER_START:
+       case SNDRV_PCM_TRIGGER_RESUME:
+       case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+               mdelay(rt9123p->enable_delay);
+               if (rt9123p->enable_switch) {
+                       gpiod_set_value(rt9123p->enable, 1);
+                       dev_dbg(comp->dev, "set enable to 1");
+               }
+               break;
+       case SNDRV_PCM_TRIGGER_STOP:
+       case SNDRV_PCM_TRIGGER_SUSPEND:
+       case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+               gpiod_set_value(rt9123p->enable, 0);
+               dev_dbg(comp->dev, "set enable to 0");
+               break;
+       default:
+               break;
+       }
+
+       return 0;
+}
+
+static int rt9123p_enable_event(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol,
+                               int event)
+{
+       struct snd_soc_component *comp = snd_soc_dapm_to_component(w->dapm);
+       struct rt9123p_priv *rt9123p = snd_soc_component_get_drvdata(comp);
+
+       if (event & SND_SOC_DAPM_POST_PMU)
+               rt9123p->enable_switch = 1;
+       else if (event & SND_SOC_DAPM_POST_PMD)
+               rt9123p->enable_switch = 0;
+
+       return 0;
+}
+
+static const struct snd_soc_dapm_widget rt9123p_dapm_widgets[] = {
+       SND_SOC_DAPM_OUTPUT("SPK"),
+       SND_SOC_DAPM_OUT_DRV_E("Amp Drv", SND_SOC_NOPM, 0, 0, NULL, 0, rt9123p_enable_event,
+                              SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route rt9123p_dapm_routes[] = {
+       {"Amp Drv", NULL, "HiFi Playback"},
+       {"SPK", NULL, "Amp Drv"},
+};
+
+static const struct snd_soc_component_driver rt9123p_comp_driver = {
+       .dapm_widgets           = rt9123p_dapm_widgets,
+       .num_dapm_widgets       = ARRAY_SIZE(rt9123p_dapm_widgets),
+       .dapm_routes            = rt9123p_dapm_routes,
+       .num_dapm_routes        = ARRAY_SIZE(rt9123p_dapm_routes),
+       .idle_bias_on           = 1,
+       .use_pmdown_time        = 1,
+       .endianness             = 1,
+};
+
+static const struct snd_soc_dai_ops rt9123p_dai_ops = {
+       .trigger        = rt9123p_daiops_trigger,
+};
+
+static struct snd_soc_dai_driver rt9123p_dai_driver = {
+       .name = "HiFi",
+       .playback = {
+               .stream_name    = "HiFi Playback",
+               .formats        = SNDRV_PCM_FMTBIT_S16 | SNDRV_PCM_FMTBIT_S24 |
+                                 SNDRV_PCM_FMTBIT_S32,
+               .rates          = SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |
+                                 SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_24000 |
+                                 SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |
+                                 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |
+                                 SNDRV_PCM_RATE_96000,
+               .rate_min       = 8000,
+               .rate_max       = 96000,
+               .channels_min   = 1,
+               .channels_max   = 2,
+       },
+       .ops    = &rt9123p_dai_ops,
+};
+
+static int rt9123p_platform_probe(struct platform_device *pdev)
+{
+       struct device *dev = &pdev->dev;
+       struct rt9123p_priv *rt9123p;
+       int ret;
+
+       rt9123p = devm_kzalloc(dev, sizeof(*rt9123p), GFP_KERNEL);
+       if (!rt9123p)
+               return -ENOMEM;
+
+       rt9123p->enable = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
+       if (IS_ERR(rt9123p->enable))
+               return PTR_ERR(rt9123p->enable);
+
+       ret = device_property_read_u32(dev, "enable-delay-ms", &rt9123p->enable_delay);
+       if (ret) {
+               rt9123p->enable_delay = 0;
+               dev_dbg(dev, "no optional property 'enable-delay-ms' found, default: no delay\n");
+       }
+
+       platform_set_drvdata(pdev, rt9123p);
+
+       return devm_snd_soc_register_component(dev, &rt9123p_comp_driver, &rt9123p_dai_driver, 1);
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id rt9123p_device_id[] = {
+       { .compatible = "richtek,rt9123p" },
+       {}
+};
+MODULE_DEVICE_TABLE(of, rt9123p_device_id);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id rt9123p_acpi_match[] = {
+       { "RT9123P", 0 },
+       {}
+};
+MODULE_DEVICE_TABLE(acpi, rt9123p_acpi_match);
+#endif
+
+static struct platform_driver rt9123p_platform_driver = {
+       .driver = {
+               .name = "rt9123p",
+               .of_match_table = of_match_ptr(rt9123p_device_id),
+               .acpi_match_table = ACPI_PTR(rt9123p_acpi_match),
+       },
+       .probe  = rt9123p_platform_probe,
+};
+module_platform_driver(rt9123p_platform_driver);
+
+MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
+MODULE_DESCRIPTION("ASoC rt9123p Driver");
+MODULE_LICENSE("GPL");