Adding upstream version 4.19.249.upstream/4.19.249upstream

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

1 files changed, 342 insertions, 0 deletions

diff --git a/sound/soc/codecs/tpa6130a2.c b/sound/soc/codecs/tpa6130a2.c
new file mode 100644
index 000000000..616cd4beb
--- /dev/null
+++ b/sound/soc/codecs/tpa6130a2.c
@@ -0,0 +1,342 @@
+/*
+ * ALSA SoC Texas Instruments TPA6130A2 headset stereo amplifier driver
+ *
+ * Copyright (C) Nokia Corporation
+ *
+ * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <sound/tpa6130a2-plat.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/regmap.h>
+
+#include "tpa6130a2.h"
+
+enum tpa_model {
+	TPA6130A2,
+	TPA6140A2,
+};
+
+/* This struct is used to save the context */
+struct tpa6130a2_data {
+	struct device *dev;
+	struct regmap *regmap;
+	struct regulator *supply;
+	int power_gpio;
+	enum tpa_model id;
+};
+
+static int tpa6130a2_power(struct tpa6130a2_data *data, bool enable)
+{
+	int ret = 0, ret2;
+
+	if (enable) {
+		ret = regulator_enable(data->supply);
+		if (ret != 0) {
+			dev_err(data->dev,
+				"Failed to enable supply: %d\n", ret);
+			return ret;
+		}
+		/* Power on */
+		if (data->power_gpio >= 0)
+			gpio_set_value(data->power_gpio, 1);
+
+		/* Sync registers */
+		regcache_cache_only(data->regmap, false);
+		ret = regcache_sync(data->regmap);
+		if (ret != 0) {
+			dev_err(data->dev,
+				"Failed to sync registers: %d\n", ret);
+			regcache_cache_only(data->regmap, true);
+			if (data->power_gpio >= 0)
+				gpio_set_value(data->power_gpio, 0);
+			ret2 = regulator_disable(data->supply);
+			if (ret2 != 0)
+				dev_err(data->dev,
+					"Failed to disable supply: %d\n", ret2);
+			return ret;
+		}
+	} else {
+		/* Powered off device does not retain registers. While device
+		 * is off, any register updates (i.e. volume changes) should
+		 * happen in cache only.
+		 */
+		regcache_mark_dirty(data->regmap);
+		regcache_cache_only(data->regmap, true);
+
+		/* Power off */
+		if (data->power_gpio >= 0)
+			gpio_set_value(data->power_gpio, 0);
+
+		ret = regulator_disable(data->supply);
+		if (ret != 0) {
+			dev_err(data->dev,
+				"Failed to disable supply: %d\n", ret);
+			return ret;
+		}
+	}
+
+	return ret;
+}
+
+static int tpa6130a2_power_event(struct snd_soc_dapm_widget *w,
+				 struct snd_kcontrol *kctrl, int event)
+{
+	struct snd_soc_component *c = snd_soc_dapm_to_component(w->dapm);
+	struct tpa6130a2_data *data = snd_soc_component_get_drvdata(c);
+
+	if (SND_SOC_DAPM_EVENT_ON(event)) {
+		/* Before widget power up: turn chip on, sync registers */
+		return tpa6130a2_power(data, true);
+	} else {
+		/* After widget power down: turn chip off */
+		return tpa6130a2_power(data, false);
+	}
+}
+
+/*
+ * TPA6130 volume. From -59.5 to 4 dB with increasing step size when going
+ * down in gain.
+ */
+static const DECLARE_TLV_DB_RANGE(tpa6130_tlv,
+	0, 1, TLV_DB_SCALE_ITEM(-5950, 600, 0),
+	2, 3, TLV_DB_SCALE_ITEM(-5000, 250, 0),
+	4, 5, TLV_DB_SCALE_ITEM(-4550, 160, 0),
+	6, 7, TLV_DB_SCALE_ITEM(-4140, 190, 0),
+	8, 9, TLV_DB_SCALE_ITEM(-3650, 120, 0),
+	10, 11, TLV_DB_SCALE_ITEM(-3330, 160, 0),
+	12, 13, TLV_DB_SCALE_ITEM(-3040, 180, 0),
+	14, 20, TLV_DB_SCALE_ITEM(-2710, 110, 0),
+	21, 37, TLV_DB_SCALE_ITEM(-1960, 74, 0),
+	38, 63, TLV_DB_SCALE_ITEM(-720, 45, 0)
+);
+
+static const struct snd_kcontrol_new tpa6130a2_controls[] = {
+	SOC_SINGLE_TLV("Headphone Playback Volume",
+		       TPA6130A2_REG_VOL_MUTE, 0, 0x3f, 0,
+		       tpa6130_tlv),
+};
+
+static const DECLARE_TLV_DB_RANGE(tpa6140_tlv,
+	0, 8, TLV_DB_SCALE_ITEM(-5900, 400, 0),
+	9, 16, TLV_DB_SCALE_ITEM(-2500, 200, 0),
+	17, 31, TLV_DB_SCALE_ITEM(-1000, 100, 0)
+);
+
+static const struct snd_kcontrol_new tpa6140a2_controls[] = {
+	SOC_SINGLE_TLV("Headphone Playback Volume",
+		       TPA6130A2_REG_VOL_MUTE, 1, 0x1f, 0,
+		       tpa6140_tlv),
+};
+
+static int tpa6130a2_component_probe(struct snd_soc_component *component)
+{
+	struct tpa6130a2_data *data = snd_soc_component_get_drvdata(component);
+
+	if (data->id == TPA6140A2)
+		return snd_soc_add_component_controls(component,
+			tpa6140a2_controls, ARRAY_SIZE(tpa6140a2_controls));
+	else
+		return snd_soc_add_component_controls(component,
+			tpa6130a2_controls, ARRAY_SIZE(tpa6130a2_controls));
+}
+
+static const struct snd_soc_dapm_widget tpa6130a2_dapm_widgets[] = {
+	SND_SOC_DAPM_INPUT("LEFTIN"),
+	SND_SOC_DAPM_INPUT("RIGHTIN"),
+	SND_SOC_DAPM_OUTPUT("HPLEFT"),
+	SND_SOC_DAPM_OUTPUT("HPRIGHT"),
+
+	SND_SOC_DAPM_PGA("Left Mute", TPA6130A2_REG_VOL_MUTE,
+			 TPA6130A2_HP_EN_L_SHIFT, 1, NULL, 0),
+	SND_SOC_DAPM_PGA("Right Mute", TPA6130A2_REG_VOL_MUTE,
+			 TPA6130A2_HP_EN_R_SHIFT, 1, NULL, 0),
+	SND_SOC_DAPM_PGA("Left PGA", TPA6130A2_REG_CONTROL,
+			 TPA6130A2_HP_EN_L_SHIFT, 0, NULL, 0),
+	SND_SOC_DAPM_PGA("Right PGA", TPA6130A2_REG_CONTROL,
+			 TPA6130A2_HP_EN_R_SHIFT, 0, NULL, 0),
+
+	SND_SOC_DAPM_SUPPLY("Power", TPA6130A2_REG_CONTROL,
+			    TPA6130A2_SWS_SHIFT, 1, tpa6130a2_power_event,
+			    SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+};
+
+static const struct snd_soc_dapm_route tpa6130a2_dapm_routes[] = {
+	{ "Left PGA", NULL, "LEFTIN" },
+	{ "Right PGA", NULL, "RIGHTIN" },
+
+	{ "Left Mute", NULL, "Left PGA" },
+	{ "Right Mute", NULL, "Right PGA" },
+
+	{ "HPLEFT", NULL, "Left Mute" },
+	{ "HPRIGHT", NULL, "Right Mute" },
+
+	{ "Left PGA", NULL, "Power" },
+	{ "Right PGA", NULL, "Power" },
+};
+
+static const struct snd_soc_component_driver tpa6130a2_component_driver = {
+	.name = "tpa6130a2",
+	.probe = tpa6130a2_component_probe,
+	.dapm_widgets = tpa6130a2_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(tpa6130a2_dapm_widgets),
+	.dapm_routes = tpa6130a2_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(tpa6130a2_dapm_routes),
+};
+
+static const struct reg_default tpa6130a2_reg_defaults[] = {
+	{ TPA6130A2_REG_CONTROL, TPA6130A2_SWS },
+	{ TPA6130A2_REG_VOL_MUTE, TPA6130A2_MUTE_R | TPA6130A2_MUTE_L },
+};
+
+static const struct regmap_config tpa6130a2_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = TPA6130A2_REG_VERSION,
+	.reg_defaults = tpa6130a2_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(tpa6130a2_reg_defaults),
+	.cache_type = REGCACHE_RBTREE,
+};
+
+static int tpa6130a2_probe(struct i2c_client *client,
+			   const struct i2c_device_id *id)
+{
+	struct device *dev;
+	struct tpa6130a2_data *data;
+	struct tpa6130a2_platform_data *pdata = client->dev.platform_data;
+	struct device_node *np = client->dev.of_node;
+	const char *regulator;
+	unsigned int version;
+	int ret;
+
+	dev = &client->dev;
+
+	data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	data->dev = dev;
+
+	data->regmap = devm_regmap_init_i2c(client, &tpa6130a2_regmap_config);
+	if (IS_ERR(data->regmap))
+		return PTR_ERR(data->regmap);
+
+	if (pdata) {
+		data->power_gpio = pdata->power_gpio;
+	} else if (np) {
+		data->power_gpio = of_get_named_gpio(np, "power-gpio", 0);
+	} else {
+		dev_err(dev, "Platform data not set\n");
+		dump_stack();
+		return -ENODEV;
+	}
+
+	i2c_set_clientdata(client, data);
+
+	data->id = id->driver_data;
+
+	if (data->power_gpio >= 0) {
+		ret = devm_gpio_request(dev, data->power_gpio,
+					"tpa6130a2 enable");
+		if (ret < 0) {
+			dev_err(dev, "Failed to request power GPIO (%d)\n",
+				data->power_gpio);
+			return ret;
+		}
+		gpio_direction_output(data->power_gpio, 0);
+	}
+
+	switch (data->id) {
+	default:
+		dev_warn(dev, "Unknown TPA model (%d). Assuming 6130A2\n",
+			 data->id);
+		/* fall through */
+	case TPA6130A2:
+		regulator = "Vdd";
+		break;
+	case TPA6140A2:
+		regulator = "AVdd";
+		break;
+	}
+
+	data->supply = devm_regulator_get(dev, regulator);
+	if (IS_ERR(data->supply)) {
+		ret = PTR_ERR(data->supply);
+		dev_err(dev, "Failed to request supply: %d\n", ret);
+		return ret;
+	}
+
+	ret = tpa6130a2_power(data, true);
+	if (ret != 0)
+		return ret;
+
+
+	/* Read version */
+	regmap_read(data->regmap, TPA6130A2_REG_VERSION, &version);
+	version &= TPA6130A2_VERSION_MASK;
+	if ((version != 1) && (version != 2))
+		dev_warn(dev, "UNTESTED version detected (%d)\n", version);
+
+	/* Disable the chip */
+	ret = tpa6130a2_power(data, false);
+	if (ret != 0)
+		return ret;
+
+	return devm_snd_soc_register_component(&client->dev,
+			&tpa6130a2_component_driver, NULL, 0);
+}
+
+static const struct i2c_device_id tpa6130a2_id[] = {
+	{ "tpa6130a2", TPA6130A2 },
+	{ "tpa6140a2", TPA6140A2 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, tpa6130a2_id);
+
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id tpa6130a2_of_match[] = {
+	{ .compatible = "ti,tpa6130a2", },
+	{ .compatible = "ti,tpa6140a2" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, tpa6130a2_of_match);
+#endif
+
+static struct i2c_driver tpa6130a2_i2c_driver = {
+	.driver = {
+		.name = "tpa6130a2",
+		.of_match_table = of_match_ptr(tpa6130a2_of_match),
+	},
+	.probe = tpa6130a2_probe,
+	.id_table = tpa6130a2_id,
+};
+
+module_i2c_driver(tpa6130a2_i2c_driver);
+
+MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
+MODULE_DESCRIPTION("TPA6130A2 Headphone amplifier driver");
+MODULE_LICENSE("GPL");