Initial file dump from open source releaseHEADmaster

1 files changed, 151 insertions, 0 deletions

diff --git a/drivers/misc/sprd_srt/sprd_srt.c b/drivers/misc/sprd_srt/sprd_srt.c
new file mode 100644
index 00000000..17727e47
--- /dev/null
+++ b/drivers/misc/sprd_srt/sprd_srt.c
@@ -0,0 +1,151 @@
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/fs.h>
+#include <linux/errno.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/cdev.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/uaccess.h>
+#include <asm/processor.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/file.h>
+#include <linux/kernel.h>
+#include <linux/kmod.h>
+#include <linux/ioctl.h>
+
+
+/**********************************************************************************/
+#define SRT_IOCTL_MAGIC 'e'
+#define SRT_OPEN    			_IO(SRT_IOCTL_MAGIC, 1)
+#define SRT_RELEASE     		_IO(SRT_IOCTL_MAGIC, 2)
+#define SRT_ENABLE      		_IO(SRT_IOCTL_MAGIC, 3)
+#define SRT_READ1				_IOR(SRT_IOCTL_MAGIC, 4, struct srtinfo_struct)
+#define SRT_READ2				_IOR(SRT_IOCTL_MAGIC, 5, struct srtinfo_struct)
+#define SRT_WRITE1				_IOW(SRT_IOCTL_MAGIC, 6, struct srtinfo_struct)
+#define SRT_WRITE2				_IOW(SRT_IOCTL_MAGIC, 7, struct srtinfo_struct)
+
+#include "sprd_srt.h"
+
+/**********************************************************************************/
+static struct srt_dev *g_srt_dev=0;
+static int srt_open(struct inode *inode, struct file *filp)
+{
+	return 0;
+}
+static int srt_release(struct inode *inode, struct file *filp)
+{
+	return 0;
+}
+static ssize_t srt_read(struct file *filp, char __user *buf, size_t size, loff_t *ppos)
+{
+	return 0;
+}
+static ssize_t srt_write(struct file *filp, const char __user *buf, size_t size, loff_t *ppos)
+{
+	return 0;
+}
+static loff_t srt_llseek(struct file *filp, loff_t offset, int orig)
+{
+	return 0;
+}
+
+
+static long srt_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	int i,ret=-1;
+	switch (cmd)
+	{
+	case SRT_READ1:
+		break;
+	case SRT_READ2:
+		break;
+	case SRT_WRITE1:
+		break;
+	case SRT_WRITE2:
+		break;
+	default:
+		return  - EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct file_operations srt_fops = {
+	.owner = THIS_MODULE,
+	.open = srt_open,
+	.release = srt_release,
+	.read = srt_read,
+	.write = srt_write,
+	.llseek = srt_llseek,
+	.unlocked_ioctl = srt_ioctl,
+};
+/**********************************************************************************/
+int srt_init(void)
+{
+	int err;
+	dev_t devno;
+
+	DEBUG_PRINT(LOG_TAG "%s Start\n", __func__);
+
+	g_srt_dev = kmalloc(sizeof(struct srt_dev), GFP_KERNEL);
+	if (!g_srt_dev)
+	{
+		DEBUG_PRINT(LOG_TAG "mem alloc fail");
+		return -1;
+	}
+	memset(g_srt_dev, 0, sizeof(struct srt_dev));
+	err = alloc_chrdev_region(&devno, 0, 1, "srt");
+	g_srt_dev->dev_major = MAJOR(devno);
+	if (err < 0)
+	{
+		DEBUG_PRINT(LOG_TAG "alloc error=%d", err);
+		return -1;
+	}
+	cdev_init(&g_srt_dev->cdev, &srt_fops);
+	g_srt_dev->cdev.owner = THIS_MODULE;
+	err = cdev_add(&g_srt_dev->cdev, devno, 1);
+	if (err)
+	{
+		DEBUG_PRINT(LOG_TAG "cdev add=%d, error=%d", devno, err);
+		return -1;
+	}
+	g_srt_dev->pClass = class_create(THIS_MODULE, "srt_class");
+	if (IS_ERR(g_srt_dev->pClass))
+	{
+		DEBUG_PRINT(LOG_TAG "create class error\n");
+		return -1;
+	}
+	g_srt_dev->pClassDev = device_create(g_srt_dev->pClass, NULL, devno, NULL, "srt_dev");
+	if (IS_ERR(g_srt_dev->pClassDev))
+	{
+		DEBUG_PRINT(LOG_TAG "create class dev error\n");
+		return -1;
+  }
+	DEBUG_PRINT(LOG_TAG "%s End\n", __func__);
+	return 0;
+}
+
+void srt_exit(void)
+{
+	DEBUG_PRINT(LOG_TAG "%s\n", __func__);
+
+	cdev_del(&g_srt_dev->cdev);
+  device_destroy(g_srt_dev->pClass,  MKDEV(g_srt_dev->dev_major, 0));
+  class_destroy(g_srt_dev->pClass);
+	unregister_chrdev_region(MKDEV(g_srt_dev->dev_major, 0), 1);
+	kfree(g_srt_dev);
+	g_srt_dev=0;
+}
+
+module_init(srt_init);
+module_exit(srt_exit);
+
+MODULE_AUTHOR("jie.yang <jie.yang@spreadtrum.com>");
+MODULE_DESCRIPTION("SRT");
+MODULE_LICENSE("GPL");