Adding upstream version 4.19.249.upstream/4.19.249upstream

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

1 files changed, 264 insertions, 0 deletions

diff --git a/sound/soc/codecs/wm1250-ev1.c b/sound/soc/codecs/wm1250-ev1.c
new file mode 100644
index 000000000..9727eec6d
--- /dev/null
+++ b/sound/soc/codecs/wm1250-ev1.c
@@ -0,0 +1,264 @@
+/*
+ * Driver for the 1250-EV1 audio I/O module
+ *
+ * Copyright 2011 Wolfson Microelectronics plc
+ *
+ *  This program is free software; you can redistribute  it and/or modify it
+ *  under  the terms of  the GNU General  Public License as published by the
+ *  Free Software Foundation;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/gpio.h>
+
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/wm1250-ev1.h>
+
+static const char *wm1250_gpio_names[WM1250_EV1_NUM_GPIOS] = {
+	"WM1250 CLK_ENA",
+	"WM1250 CLK_SEL0",
+	"WM1250 CLK_SEL1",
+	"WM1250 OSR",
+	"WM1250 MASTER",
+};
+
+struct wm1250_priv {
+	struct gpio gpios[WM1250_EV1_NUM_GPIOS];
+};
+
+static int wm1250_ev1_set_bias_level(struct snd_soc_component *component,
+				     enum snd_soc_bias_level level)
+{
+	struct wm1250_priv *wm1250 = dev_get_drvdata(component->dev);
+	int ena;
+
+	if (wm1250)
+		ena = wm1250->gpios[WM1250_EV1_GPIO_CLK_ENA].gpio;
+	else
+		ena = -1;
+
+	switch (level) {
+	case SND_SOC_BIAS_ON:
+		break;
+
+	case SND_SOC_BIAS_PREPARE:
+		break;
+
+	case SND_SOC_BIAS_STANDBY:
+		if (ena >= 0)
+			gpio_set_value_cansleep(ena, 1);
+		break;
+
+	case SND_SOC_BIAS_OFF:
+		if (ena >= 0)
+			gpio_set_value_cansleep(ena, 0);
+		break;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dapm_widget wm1250_ev1_dapm_widgets[] = {
+SND_SOC_DAPM_ADC("ADC", "wm1250-ev1 Capture", SND_SOC_NOPM, 0, 0),
+SND_SOC_DAPM_DAC("DAC", "wm1250-ev1 Playback", SND_SOC_NOPM, 0, 0),
+
+SND_SOC_DAPM_INPUT("WM1250 Input"),
+SND_SOC_DAPM_OUTPUT("WM1250 Output"),
+};
+
+static const struct snd_soc_dapm_route wm1250_ev1_dapm_routes[] = {
+	{ "ADC", NULL, "WM1250 Input" },
+	{ "WM1250 Output", NULL, "DAC" },
+};
+
+static int wm1250_ev1_hw_params(struct snd_pcm_substream *substream,
+				struct snd_pcm_hw_params *params,
+				struct snd_soc_dai *dai)
+{
+	struct wm1250_priv *wm1250 = snd_soc_component_get_drvdata(dai->component);
+
+	switch (params_rate(params)) {
+	case 8000:
+		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
+			       1);
+		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
+			       1);
+		break;
+	case 16000:
+		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
+			       0);
+		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
+			       1);
+		break;
+	case 32000:
+		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
+			       1);
+		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
+			       0);
+		break;
+	case 64000:
+		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].gpio,
+			       0);
+		gpio_set_value(wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].gpio,
+			       0);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops wm1250_ev1_ops = {
+	.hw_params = wm1250_ev1_hw_params,
+};
+
+#define WM1250_EV1_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
+			  SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_64000)
+
+static struct snd_soc_dai_driver wm1250_ev1_dai = {
+	.name = "wm1250-ev1",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = WM1250_EV1_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = WM1250_EV1_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+	.ops = &wm1250_ev1_ops,
+};
+
+static const struct snd_soc_component_driver soc_component_dev_wm1250_ev1 = {
+	.dapm_widgets		= wm1250_ev1_dapm_widgets,
+	.num_dapm_widgets	= ARRAY_SIZE(wm1250_ev1_dapm_widgets),
+	.dapm_routes		= wm1250_ev1_dapm_routes,
+	.num_dapm_routes	= ARRAY_SIZE(wm1250_ev1_dapm_routes),
+	.set_bias_level		= wm1250_ev1_set_bias_level,
+	.use_pmdown_time	= 1,
+	.endianness		= 1,
+	.non_legacy_dai_naming	= 1,
+};
+
+static int wm1250_ev1_pdata(struct i2c_client *i2c)
+{
+	struct wm1250_ev1_pdata *pdata = dev_get_platdata(&i2c->dev);
+	struct wm1250_priv *wm1250;
+	int i, ret;
+
+	if (!pdata)
+		return 0;
+
+	wm1250 = devm_kzalloc(&i2c->dev, sizeof(*wm1250), GFP_KERNEL);
+	if (!wm1250) {
+		ret = -ENOMEM;
+		goto err;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(wm1250->gpios); i++) {
+		wm1250->gpios[i].gpio = pdata->gpios[i];
+		wm1250->gpios[i].label = wm1250_gpio_names[i];
+		wm1250->gpios[i].flags = GPIOF_OUT_INIT_LOW;
+	}
+	wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL0].flags = GPIOF_OUT_INIT_HIGH;
+	wm1250->gpios[WM1250_EV1_GPIO_CLK_SEL1].flags = GPIOF_OUT_INIT_HIGH;
+
+	ret = gpio_request_array(wm1250->gpios, ARRAY_SIZE(wm1250->gpios));
+	if (ret != 0) {
+		dev_err(&i2c->dev, "Failed to get GPIOs: %d\n", ret);
+		goto err;
+	}
+
+	dev_set_drvdata(&i2c->dev, wm1250);
+
+	return ret;
+
+err:
+	return ret;
+}
+
+static void wm1250_ev1_free(struct i2c_client *i2c)
+{
+	struct wm1250_priv *wm1250 = dev_get_drvdata(&i2c->dev);
+
+	if (wm1250)
+		gpio_free_array(wm1250->gpios, ARRAY_SIZE(wm1250->gpios));
+}
+
+static int wm1250_ev1_probe(struct i2c_client *i2c,
+			    const struct i2c_device_id *i2c_id)
+{
+	int id, board, rev, ret;
+
+	dev_set_drvdata(&i2c->dev, NULL);
+
+	board = i2c_smbus_read_byte_data(i2c, 0);
+	if (board < 0) {
+		dev_err(&i2c->dev, "Failed to read ID: %d\n", board);
+		return board;
+	}
+
+	id = (board & 0xfe) >> 2;
+	rev = board & 0x3;
+
+	if (id != 1) {
+		dev_err(&i2c->dev, "Unknown board ID %d\n", id);
+		return -ENODEV;
+	}
+
+	dev_info(&i2c->dev, "revision %d\n", rev + 1);
+
+	ret = wm1250_ev1_pdata(i2c);
+	if (ret != 0)
+		return ret;
+
+	ret = devm_snd_soc_register_component(&i2c->dev, &soc_component_dev_wm1250_ev1,
+				     &wm1250_ev1_dai, 1);
+	if (ret != 0) {
+		dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
+		wm1250_ev1_free(i2c);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int wm1250_ev1_remove(struct i2c_client *i2c)
+{
+	wm1250_ev1_free(i2c);
+
+	return 0;
+}
+
+static const struct i2c_device_id wm1250_ev1_i2c_id[] = {
+	{ "wm1250-ev1", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, wm1250_ev1_i2c_id);
+
+static struct i2c_driver wm1250_ev1_i2c_driver = {
+	.driver = {
+		.name = "wm1250-ev1",
+	},
+	.probe =    wm1250_ev1_probe,
+	.remove =   wm1250_ev1_remove,
+	.id_table = wm1250_ev1_i2c_id,
+};
+
+module_i2c_driver(wm1250_ev1_i2c_driver);
+
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_DESCRIPTION("WM1250-EV1 audio I/O module driver");
+MODULE_LICENSE("GPL");