Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / jz4740 / qi_lb60.c

diff --git a/kernel/sound/soc/jz4740/qi_lb60.c b/kernel/sound/soc/jz4740/qi_lb60.c
new file mode 100644 (file)
index 0000000..5358699
--- /dev/null
+++ b/kernel/sound/soc/jz4740/qi_lb60.c
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
+ *
+ * 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.
+ *
+ *  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.,
+ *  675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <linux/gpio/consumer.h>
+
+struct qi_lb60 {
+       struct gpio_desc *snd_gpio;
+       struct gpio_desc *amp_gpio;
+};
+
+static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
+                            struct snd_kcontrol *ctrl, int event)
+{
+       struct qi_lb60 *qi_lb60 = snd_soc_card_get_drvdata(widget->dapm->card);
+       int on = !SND_SOC_DAPM_EVENT_OFF(event);
+
+       gpiod_set_value_cansleep(qi_lb60->snd_gpio, on);
+       gpiod_set_value_cansleep(qi_lb60->amp_gpio, on);
+
+       return 0;
+}
+
+static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
+       SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
+       SND_SOC_DAPM_MIC("Mic", NULL),
+};
+
+static const struct snd_soc_dapm_route qi_lb60_routes[] = {
+       {"Mic", NULL, "MIC"},
+       {"Speaker", NULL, "LOUT"},
+       {"Speaker", NULL, "ROUT"},
+};
+
+static struct snd_soc_dai_link qi_lb60_dai = {
+       .name = "jz4740",
+       .stream_name = "jz4740",
+       .cpu_dai_name = "jz4740-i2s",
+       .platform_name = "jz4740-i2s",
+       .codec_dai_name = "jz4740-hifi",
+       .codec_name = "jz4740-codec",
+       .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+               SND_SOC_DAIFMT_CBM_CFM,
+};
+
+static struct snd_soc_card qi_lb60_card = {
+       .name = "QI LB60",
+       .owner = THIS_MODULE,
+       .dai_link = &qi_lb60_dai,
+       .num_links = 1,
+
+       .dapm_widgets = qi_lb60_widgets,
+       .num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
+       .dapm_routes = qi_lb60_routes,
+       .num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
+       .fully_routed = true,
+};
+
+static int qi_lb60_probe(struct platform_device *pdev)
+{
+       struct qi_lb60 *qi_lb60;
+       struct snd_soc_card *card = &qi_lb60_card;
+
+       qi_lb60 = devm_kzalloc(&pdev->dev, sizeof(*qi_lb60), GFP_KERNEL);
+       if (!qi_lb60)
+               return -ENOMEM;
+
+       qi_lb60->snd_gpio = devm_gpiod_get(&pdev->dev, "snd", GPIOD_OUT_LOW);
+       if (IS_ERR(qi_lb60->snd_gpio))
+               return PTR_ERR(qi_lb60->snd_gpio);
+
+       qi_lb60->amp_gpio = devm_gpiod_get(&pdev->dev, "amp", GPIOD_OUT_LOW);
+       if (IS_ERR(qi_lb60->amp_gpio))
+               return PTR_ERR(qi_lb60->amp_gpio);
+
+       card->dev = &pdev->dev;
+
+       snd_soc_card_set_drvdata(card, qi_lb60);
+
+       return devm_snd_soc_register_card(&pdev->dev, card);
+}
+
+static struct platform_driver qi_lb60_driver = {
+       .driver         = {
+               .name   = "qi-lb60-audio",
+       },
+       .probe          = qi_lb60_probe,
+};
+
+module_platform_driver(qi_lb60_driver);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:qi-lb60-audio");