audio-lnx: Initial change for techpack of audio drivers.
Add snapshot for audio drivers for SDM targets. The code is
migrated from msm-4.9 kernel at the below cutoff -
(74ff856e8d6: "net: ipc_router: Add dynamic enable/disable
wakeup source feature")
This changes are done for new techpack addition
for audio kernel. Migrate all audio kernel drivers
to this techpack.
Change-Id: I33d580af3ba86a5cb777583efc5d4cdaf2882d93
Signed-off-by: Asish Bhattacharya <asishb@codeaurora.org>
diff --git a/sound/soc/msm/msm-pcm-hostless.c b/sound/soc/msm/msm-pcm-hostless.c
new file mode 100644
index 0000000..35766b4
--- /dev/null
+++ b/sound/soc/msm/msm-pcm-hostless.c
@@ -0,0 +1,82 @@
+/* Copyright (c) 2011-2014, 2017 The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/of_device.h>
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/pcm.h>
+
+
+static int msm_pcm_hostless_prepare(struct snd_pcm_substream *substream)
+{
+ if (!substream) {
+ pr_err("%s: invalid params\n", __func__);
+ return -EINVAL;
+ }
+ pm_qos_remove_request(&substream->latency_pm_qos_req);
+ return 0;
+}
+
+static const struct snd_pcm_ops msm_pcm_hostless_ops = {
+ .prepare = msm_pcm_hostless_prepare
+};
+
+static struct snd_soc_platform_driver msm_soc_hostless_platform = {
+ .ops = &msm_pcm_hostless_ops,
+};
+
+static int msm_pcm_hostless_probe(struct platform_device *pdev)
+{
+
+ pr_debug("%s: dev name %s\n", __func__, dev_name(&pdev->dev));
+ return snd_soc_register_platform(&pdev->dev,
+ &msm_soc_hostless_platform);
+}
+
+static int msm_pcm_hostless_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_platform(&pdev->dev);
+ return 0;
+}
+
+static const struct of_device_id msm_pcm_hostless_dt_match[] = {
+ {.compatible = "qcom,msm-pcm-hostless"},
+ {}
+};
+
+static struct platform_driver msm_pcm_hostless_driver = {
+ .driver = {
+ .name = "msm-pcm-hostless",
+ .owner = THIS_MODULE,
+ .of_match_table = msm_pcm_hostless_dt_match,
+ },
+ .probe = msm_pcm_hostless_probe,
+ .remove = msm_pcm_hostless_remove,
+};
+
+static int __init msm_soc_platform_init(void)
+{
+ return platform_driver_register(&msm_pcm_hostless_driver);
+}
+module_init(msm_soc_platform_init);
+
+static void __exit msm_soc_platform_exit(void)
+{
+ platform_driver_unregister(&msm_pcm_hostless_driver);
+}
+module_exit(msm_soc_platform_exit);
+
+MODULE_DESCRIPTION("Hostless platform driver");
+MODULE_LICENSE("GPL v2");