Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / soc / sirf / sirf-audio-port.c

diff --git a/kernel/sound/soc/sirf/sirf-audio-port.c b/kernel/sound/soc/sirf/sirf-audio-port.c
new file mode 100644 (file)
index 0000000..3f2cce0
--- /dev/null
+++ b/kernel/sound/soc/sirf/sirf-audio-port.c
@@ -0,0 +1,86 @@
+/*
+ * SiRF Audio port driver
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+#include <linux/module.h>
+#include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
+
+struct sirf_audio_port {
+       struct regmap *regmap;
+       struct snd_dmaengine_dai_dma_data playback_dma_data;
+       struct snd_dmaengine_dai_dma_data capture_dma_data;
+};
+
+
+static int sirf_audio_port_dai_probe(struct snd_soc_dai *dai)
+{
+       struct sirf_audio_port *port = snd_soc_dai_get_drvdata(dai);
+       snd_soc_dai_init_dma_data(dai, &port->playback_dma_data,
+                       &port->capture_dma_data);
+       return 0;
+}
+
+static struct snd_soc_dai_driver sirf_audio_port_dai = {
+       .probe = sirf_audio_port_dai_probe,
+       .name = "sirf-audio-port",
+       .id = 0,
+       .playback = {
+               .channels_min = 2,
+               .channels_max = 2,
+               .rates = SNDRV_PCM_RATE_48000,
+               .formats = SNDRV_PCM_FMTBIT_S16_LE,
+       },
+       .capture = {
+               .channels_min = 1,
+               .channels_max = 2,
+               .rates = SNDRV_PCM_RATE_48000,
+               .formats = SNDRV_PCM_FMTBIT_S16_LE,
+       },
+};
+
+static const struct snd_soc_component_driver sirf_audio_port_component = {
+       .name       = "sirf-audio-port",
+};
+
+static int sirf_audio_port_probe(struct platform_device *pdev)
+{
+       int ret;
+       struct sirf_audio_port *port;
+
+       port = devm_kzalloc(&pdev->dev,
+                       sizeof(struct sirf_audio_port), GFP_KERNEL);
+       if (!port)
+               return -ENOMEM;
+
+       ret = devm_snd_soc_register_component(&pdev->dev,
+                       &sirf_audio_port_component, &sirf_audio_port_dai, 1);
+       if (ret)
+               return ret;
+
+       platform_set_drvdata(pdev, port);
+       return devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0);
+}
+
+static const struct of_device_id sirf_audio_port_of_match[] = {
+       { .compatible = "sirf,audio-port", },
+       {}
+};
+MODULE_DEVICE_TABLE(of, sirf_audio_port_of_match);
+
+static struct platform_driver sirf_audio_port_driver = {
+       .driver = {
+               .name = "sirf-audio-port",
+               .of_match_table = sirf_audio_port_of_match,
+       },
+       .probe = sirf_audio_port_probe,
+};
+
+module_platform_driver(sirf_audio_port_driver);
+
+MODULE_DESCRIPTION("SiRF Audio Port driver");
+MODULE_AUTHOR("RongJun Ying <Rongjun.Ying@csr.com>");
+MODULE_LICENSE("GPL v2");