aboutsummaryrefslogtreecommitdiffstats
path: root/sound/soc/imx/imx-hdmi.c
diff options
context:
space:
mode:
Diffstat (limited to 'sound/soc/imx/imx-hdmi.c')
-rw-r--r--sound/soc/imx/imx-hdmi.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/sound/soc/imx/imx-hdmi.c b/sound/soc/imx/imx-hdmi.c
new file mode 100644
index 00000000..a30d478a
--- /dev/null
+++ b/sound/soc/imx/imx-hdmi.c
@@ -0,0 +1,90 @@
+/*
+ * ASoC HDMI Transmitter driver for IMX development boards
+ *
+ * Copyright (C) 2011-2012 Freescale Semiconductor, Inc.
+ *
+ * based on stmp3780_devb_spdif.c
+ *
+ * Vladimir Barinov <vbarinov@embeddedalley.com>
+ *
+ * Copyright 2008 SigmaTel, Inc
+ * Copyright 2008 Embedded Alley Solutions, Inc
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+
+#include <asm/mach-types.h>
+#include <asm/dma.h>
+#include <mach/hardware.h>
+
+#include <mach/mxc_hdmi.h>
+#include <linux/mfd/mxc-hdmi-core.h>
+#include "imx-hdmi.h"
+
+/* imx digital audio interface glue - connects codec <--> CPU */
+static struct snd_soc_dai_link imx_hdmi_dai_link = {
+ .name = "IMX HDMI TX",
+ .stream_name = "IMX HDMI TX",
+ .codec_dai_name = "mxc-hdmi-soc",
+ .codec_name = "mxc_hdmi_soc.0",
+ .cpu_dai_name = "imx-hdmi-soc-dai.0",
+ .platform_name = "imx-hdmi-soc-audio.0",
+};
+
+static struct snd_soc_card snd_soc_card_imx_hdmi = {
+ .name = "imx-hdmi-soc",
+ .dai_link = &imx_hdmi_dai_link,
+ .num_links = 1,
+};
+
+static struct platform_device *imx_hdmi_snd_device;
+
+static int __init imx_hdmi_init(void)
+{
+ int ret = 0;
+
+ if (!hdmi_get_registered())
+ return -ENOMEM;
+
+ imx_hdmi_snd_device = platform_device_alloc("soc-audio", 4);
+ if (!imx_hdmi_snd_device) {
+ pr_err("%s - failed platform_device_alloc\n", __func__);
+ return -ENOMEM;
+ }
+
+ platform_set_drvdata(imx_hdmi_snd_device, &snd_soc_card_imx_hdmi);
+
+ ret = platform_device_add(imx_hdmi_snd_device);
+ if (ret) {
+ pr_err("ASoC HDMI TX: Platform device allocation failed\n");
+ platform_device_put(imx_hdmi_snd_device);
+ }
+
+ return ret;
+}
+
+static void __exit imx_hdmi_exit(void)
+{
+ platform_device_unregister(imx_hdmi_snd_device);
+}
+
+module_init(imx_hdmi_init);
+module_exit(imx_hdmi_exit);
+
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("IMX HDMI TX ASoC driver");
+MODULE_LICENSE("GPL");