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-rw-r--r--sound/soc/codecs/max9877.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/sound/soc/codecs/max9877.c b/sound/soc/codecs/max9877.c
new file mode 100644
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+++ b/sound/soc/codecs/max9877.c
@@ -0,0 +1,171 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * max9877.c -- amp driver for max9877
+ *
+ * Copyright (C) 2009 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim@samsung.com>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+
+#include "max9877.h"
+
+static const struct reg_default max9877_regs[] = {
+ { 0, 0x40 },
+ { 1, 0x00 },
+ { 2, 0x00 },
+ { 3, 0x00 },
+ { 4, 0x49 },
+};
+
+static const DECLARE_TLV_DB_RANGE(max9877_pgain_tlv,
+ 0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),
+ 2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0)
+);
+
+static const DECLARE_TLV_DB_RANGE(max9877_output_tlv,
+ 0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),
+ 8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),
+ 16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),
+ 24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0)
+);
+
+static const char *max9877_out_mode[] = {
+ "INA -> SPK",
+ "INA -> HP",
+ "INA -> SPK and HP",
+ "INB -> SPK",
+ "INB -> HP",
+ "INB -> SPK and HP",
+ "INA + INB -> SPK",
+ "INA + INB -> HP",
+ "INA + INB -> SPK and HP",
+};
+
+static const char *max9877_osc_mode[] = {
+ "1176KHz",
+ "1100KHz",
+ "700KHz",
+};
+
+static const struct soc_enum max9877_enum[] = {
+ SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, 0, ARRAY_SIZE(max9877_out_mode),
+ max9877_out_mode),
+ SOC_ENUM_SINGLE(MAX9877_OUTPUT_MODE, MAX9877_OSC_OFFSET,
+ ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),
+};
+
+static const struct snd_kcontrol_new max9877_controls[] = {
+ SOC_SINGLE_TLV("MAX9877 PGAINA Playback Volume",
+ MAX9877_INPUT_MODE, 0, 2, 0, max9877_pgain_tlv),
+ SOC_SINGLE_TLV("MAX9877 PGAINB Playback Volume",
+ MAX9877_INPUT_MODE, 2, 2, 0, max9877_pgain_tlv),
+ SOC_SINGLE_TLV("MAX9877 Amp Speaker Playback Volume",
+ MAX9877_SPK_VOLUME, 0, 31, 0, max9877_output_tlv),
+ SOC_DOUBLE_R_TLV("MAX9877 Amp HP Playback Volume",
+ MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,
+ max9877_output_tlv),
+ SOC_SINGLE("MAX9877 INB Stereo Switch",
+ MAX9877_INPUT_MODE, 4, 1, 1),
+ SOC_SINGLE("MAX9877 INA Stereo Switch",
+ MAX9877_INPUT_MODE, 5, 1, 1),
+ SOC_SINGLE("MAX9877 Zero-crossing detection Switch",
+ MAX9877_INPUT_MODE, 6, 1, 0),
+ SOC_SINGLE("MAX9877 Bypass Mode Switch",
+ MAX9877_OUTPUT_MODE, 6, 1, 0),
+ SOC_ENUM("MAX9877 Output Mode", max9877_enum[0]),
+ SOC_ENUM("MAX9877 Oscillator Mode", max9877_enum[1]),
+};
+
+static const struct snd_soc_dapm_widget max9877_dapm_widgets[] = {
+SND_SOC_DAPM_INPUT("INA1"),
+SND_SOC_DAPM_INPUT("INA2"),
+SND_SOC_DAPM_INPUT("INB1"),
+SND_SOC_DAPM_INPUT("INB2"),
+SND_SOC_DAPM_INPUT("RXIN+"),
+SND_SOC_DAPM_INPUT("RXIN-"),
+
+SND_SOC_DAPM_PGA("SHDN", MAX9877_OUTPUT_MODE, 7, 1, NULL, 0),
+
+SND_SOC_DAPM_OUTPUT("OUT+"),
+SND_SOC_DAPM_OUTPUT("OUT-"),
+SND_SOC_DAPM_OUTPUT("HPL"),
+SND_SOC_DAPM_OUTPUT("HPR"),
+};
+
+static const struct snd_soc_dapm_route max9877_dapm_routes[] = {
+ { "SHDN", NULL, "INA1" },
+ { "SHDN", NULL, "INA2" },
+ { "SHDN", NULL, "INB1" },
+ { "SHDN", NULL, "INB2" },
+
+ { "OUT+", NULL, "RXIN+" },
+ { "OUT+", NULL, "SHDN" },
+
+ { "OUT-", NULL, "SHDN" },
+ { "OUT-", NULL, "RXIN-" },
+
+ { "HPL", NULL, "SHDN" },
+ { "HPR", NULL, "SHDN" },
+};
+
+static const struct snd_soc_component_driver max9877_component_driver = {
+ .controls = max9877_controls,
+ .num_controls = ARRAY_SIZE(max9877_controls),
+
+ .dapm_widgets = max9877_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(max9877_dapm_widgets),
+ .dapm_routes = max9877_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(max9877_dapm_routes),
+};
+
+static const struct regmap_config max9877_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .reg_defaults = max9877_regs,
+ .num_reg_defaults = ARRAY_SIZE(max9877_regs),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int max9877_i2c_probe(struct i2c_client *client)
+{
+ struct regmap *regmap;
+ int i;
+
+ regmap = devm_regmap_init_i2c(client, &max9877_regmap);
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ /* Ensure the device is in reset state */
+ for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)
+ regmap_write(regmap, max9877_regs[i].reg, max9877_regs[i].def);
+
+ return devm_snd_soc_register_component(&client->dev,
+ &max9877_component_driver, NULL, 0);
+}
+
+static const struct i2c_device_id max9877_i2c_id[] = {
+ { "max9877", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);
+
+static struct i2c_driver max9877_i2c_driver = {
+ .driver = {
+ .name = "max9877",
+ },
+ .probe = max9877_i2c_probe,
+ .id_table = max9877_i2c_id,
+};
+
+module_i2c_driver(max9877_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
+MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
+MODULE_LICENSE("GPL");