Initial Contribution
msm-2.6.38: tag AU_LINUX_ANDROID_GINGERBREAD.02.03.04.00.142
Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
diff --git a/arch/arm/mach-msm/qdsp6v2/snddev_virtual.c b/arch/arm/mach-msm/qdsp6v2/snddev_virtual.c
new file mode 100644
index 0000000..f48aa0e
--- /dev/null
+++ b/arch/arm/mach-msm/qdsp6v2/snddev_virtual.c
@@ -0,0 +1,172 @@
+/* Copyright (c) 2011, Code Aurora Forum. 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/module.h>
+#include <linux/platform_device.h>
+#include <linux/err.h>
+#include <mach/qdsp6v2/audio_dev_ctl.h>
+#include <sound/q6afe.h>
+#include <linux/slab.h>
+#include "snddev_virtual.h"
+
+static DEFINE_MUTEX(snddev_virtual_lock);
+
+static int snddev_virtual_open(struct msm_snddev_info *dev_info)
+{
+ int rc = 0;
+
+ pr_debug("%s\n", __func__);
+
+ mutex_lock(&snddev_virtual_lock);
+
+ if (!dev_info) {
+ pr_err("%s: NULL dev_info\n", __func__);
+
+ rc = -EINVAL;
+ goto done;
+ }
+
+ if (!dev_info->opened) {
+ rc = afe_start_pseudo_port(dev_info->copp_id);
+ } else {
+ pr_err("%s: Pseudo port 0x%x is already open\n",
+ __func__, dev_info->copp_id);
+
+ rc = -EBUSY;
+ }
+
+done:
+ mutex_unlock(&snddev_virtual_lock);
+
+ return rc;
+}
+
+static int snddev_virtual_close(struct msm_snddev_info *dev_info)
+{
+ int rc = 0;
+
+ pr_debug("%s\n", __func__);
+
+ mutex_lock(&snddev_virtual_lock);
+
+ if (!dev_info) {
+ pr_err("%s: NULL dev_info\n", __func__);
+
+ rc = -EINVAL;
+ goto done;
+ }
+
+ if (dev_info->opened) {
+ rc = afe_stop_pseudo_port(dev_info->copp_id);
+ } else {
+ pr_err("%s: Pseudo port 0x%x is not open\n",
+ __func__, dev_info->copp_id);
+
+ rc = -EPERM;
+ }
+
+done:
+ mutex_unlock(&snddev_virtual_lock);
+
+ return rc;
+}
+
+static int snddev_virtual_set_freq(struct msm_snddev_info *dev_info, u32 rate)
+{
+ int rc = 0;
+
+ if (!dev_info)
+ rc = -EINVAL;
+
+ return rate;
+}
+
+static int snddev_virtual_probe(struct platform_device *pdev)
+{
+ int rc = 0;
+ struct snddev_virtual_data *pdata;
+ struct msm_snddev_info *dev_info;
+
+ pr_debug("%s\n", __func__);
+
+ if (!pdev || !pdev->dev.platform_data) {
+ pr_err("%s: Invalid caller\n", __func__);
+
+ rc = -EPERM;
+ goto done;
+ }
+
+ pdata = pdev->dev.platform_data;
+
+ dev_info = kmalloc(sizeof(struct msm_snddev_info), GFP_KERNEL);
+ if (!dev_info) {
+ pr_err("%s: Out of memory\n", __func__);
+
+ rc = -ENOMEM;
+ goto done;
+ }
+
+ dev_info->name = pdata->name;
+ dev_info->copp_id = pdata->copp_id;
+ dev_info->private_data = (void *) NULL;
+ dev_info->dev_ops.open = snddev_virtual_open;
+ dev_info->dev_ops.close = snddev_virtual_close;
+ dev_info->dev_ops.set_freq = snddev_virtual_set_freq;
+ dev_info->capability = pdata->capability;
+ dev_info->sample_rate = 48000;
+ dev_info->opened = 0;
+ dev_info->sessions = 0;
+
+ msm_snddev_register(dev_info);
+
+done:
+ return rc;
+}
+
+static int snddev_virtual_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+static struct platform_driver snddev_virtual_driver = {
+ .probe = snddev_virtual_probe,
+ .remove = snddev_virtual_remove,
+ .driver = { .name = "snddev_virtual" }
+};
+
+static int __init snddev_virtual_init(void)
+{
+ int rc = 0;
+
+ pr_debug("%s\n", __func__);
+
+ rc = platform_driver_register(&snddev_virtual_driver);
+ if (IS_ERR_VALUE(rc)) {
+ pr_err("%s: Platform driver register failure\n", __func__);
+
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit snddev_virtual_exit(void)
+{
+ platform_driver_unregister(&snddev_virtual_driver);
+
+ return;
+}
+
+module_init(snddev_virtual_init);
+module_exit(snddev_virtual_exit);
+
+MODULE_DESCRIPTION("Virtual Sound Device driver");
+MODULE_LICENSE("GPL v2");