These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / sound / soc / codecs / ics43432.c

diff --git a/kernel/sound/soc/codecs/ics43432.c b/kernel/sound/soc/codecs/ics43432.c
new file mode 100644 (file)
index 0000000..dd850b9
--- /dev/null
+++ b/kernel/sound/soc/codecs/ics43432.c
@@ -0,0 +1,76 @@
+/*
+ * I2S MEMS microphone driver for InvenSense ICS-43432
+ *
+ * - Non configurable.
+ * - I2S interface, 64 BCLs per frame, 32 bits per channel, 24 bit data
+ *
+ * Copyright (c) 2015 Axis Communications AB
+ *
+ * Licensed under GPL v2.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+
+#define ICS43432_RATE_MIN 7190 /* Hz, from data sheet */
+#define ICS43432_RATE_MAX 52800  /* Hz, from data sheet */
+
+#define ICS43432_FORMATS (SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32)
+
+static struct snd_soc_dai_driver ics43432_dai = {
+       .name = "ics43432-hifi",
+       .capture = {
+               .stream_name = "Capture",
+               .channels_min = 1,
+               .channels_max = 2,
+               .rate_min = ICS43432_RATE_MIN,
+               .rate_max = ICS43432_RATE_MAX,
+               .rates = SNDRV_PCM_RATE_CONTINUOUS,
+               .formats = ICS43432_FORMATS,
+       },
+};
+
+static struct snd_soc_codec_driver ics43432_codec_driver = {
+};
+
+static int ics43432_probe(struct platform_device *pdev)
+{
+       return snd_soc_register_codec(&pdev->dev, &ics43432_codec_driver,
+                       &ics43432_dai, 1);
+}
+
+static int ics43432_remove(struct platform_device *pdev)
+{
+       snd_soc_unregister_codec(&pdev->dev);
+       return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id ics43432_ids[] = {
+       { .compatible = "invensense,ics43432", },
+       { }
+};
+MODULE_DEVICE_TABLE(of, ics43432_ids);
+#endif
+
+static struct platform_driver ics43432_driver = {
+       .driver = {
+               .name = "ics43432",
+               .of_match_table = of_match_ptr(ics43432_ids),
+       },
+       .probe = ics43432_probe,
+       .remove = ics43432_remove,
+};
+
+module_platform_driver(ics43432_driver);
+
+MODULE_DESCRIPTION("ASoC ICS43432 driver");
+MODULE_AUTHOR("Ricard Wanderlof <ricardw@axis.com>");
+MODULE_LICENSE("GPL v2");