From 8e4bff4cab0ddac6060645b0715210484d02ff40 Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Wed, 30 Aug 2017 08:25:59 +0000
Subject: Initial file dump from open source release

---
 drivers/media/sprd_rotation/Kconfig   |   5 +
 drivers/media/sprd_rotation/Makefile  |   7 +
 drivers/media/sprd_rotation/img_rot.c | 390 ++++++++++++++++++++++++++++++++++
 drivers/media/sprd_rotation/img_rot.h |  17 ++
 drivers/media/sprd_rotation/rot_drv.c | 339 +++++++++++++++++++++++++++++
 drivers/media/sprd_rotation/rot_drv.h |  62 ++++++
 drivers/media/sprd_rotation/rot_reg.h |  71 +++++++
 7 files changed, 891 insertions(+)
 create mode 100644 drivers/media/sprd_rotation/Kconfig
 create mode 100644 drivers/media/sprd_rotation/Makefile
 create mode 100644 drivers/media/sprd_rotation/img_rot.c
 create mode 100644 drivers/media/sprd_rotation/img_rot.h
 create mode 100644 drivers/media/sprd_rotation/rot_drv.c
 create mode 100644 drivers/media/sprd_rotation/rot_drv.h
 create mode 100644 drivers/media/sprd_rotation/rot_reg.h

(limited to 'drivers/media/sprd_rotation')

diff --git a/drivers/media/sprd_rotation/Kconfig b/drivers/media/sprd_rotation/Kconfig
new file mode 100644
index 00000000..1d7bb99f
--- /dev/null
+++ b/drivers/media/sprd_rotation/Kconfig
@@ -0,0 +1,5 @@
+config SPRD_ROT
+	depends on ARCH_SCX35
+	bool "Spreadtrum Rotation Driver"
+	help
+	  Say Y to support spreadtrum rotation device driver
diff --git a/drivers/media/sprd_rotation/Makefile b/drivers/media/sprd_rotation/Makefile
new file mode 100644
index 00000000..f47c67ff
--- /dev/null
+++ b/drivers/media/sprd_rotation/Makefile
@@ -0,0 +1,7 @@
+include drivers/media/sprd_dcam/common/Makefile.inc
+
+ifeq ($(CONFIG_ARCH_SCX35),y)
+sprd_rotation-objs := rot_drv.o img_rot.o
+obj-y += sprd_rotation.o
+endif
+
diff --git a/drivers/media/sprd_rotation/img_rot.c b/drivers/media/sprd_rotation/img_rot.c
new file mode 100644
index 00000000..ac91f346
--- /dev/null
+++ b/drivers/media/sprd_rotation/img_rot.c
@@ -0,0 +1,390 @@
+/*
+ * Copyright (C) 2012 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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/kernel.h>
+#include <linux/errno.h>
+#include <linux/poll.h>
+#include <linux/fs.h>
+#include <linux/irq.h>
+#include <linux/mm.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/miscdevice.h>
+#include <asm/io.h>
+#include <linux/file.h>
+#include <linux/sched.h>
+#include <video/sprd_rot_k.h>
+#include <linux/slab.h>
+#include <linux/kthread.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/vmalloc.h>
+#include "dcam_drv.h"
+#include "rot_drv.h"
+#include "img_rot.h"
+
+#define ROT_DEVICE_NAME "sprd_rotation"
+#define ROT_TIMEOUT 5000/*ms*/
+#define ROTATION_MINOR MISC_DYNAMIC_MINOR
+
+struct rot_k_private {
+	struct semaphore start_sem;
+};
+
+struct rot_k_file {
+	struct rot_k_private *rot_private;
+	struct semaphore rot_done_sem;
+	/*for dcam rotation module*/
+	struct rot_drv_private drv_private;
+	struct device_node *dn;
+};
+
+static void rot_k_irq(void *fd)
+{
+	struct rot_k_file *rot_file = (struct rot_k_file*)fd;
+
+	if (!rot_file) {
+		return;
+	}
+
+	up(&rot_file->rot_done_sem);
+}
+
+static int rot_k_start(struct rot_k_file *fd)
+{
+	int ret = 0;
+	ROT_PARAM_CFG_T *s;
+
+	if (!fd) {
+		ret = -EFAULT;
+		goto start_exit;
+	}
+	s = &(fd->drv_private.cfg);
+	rot_k_register_cfg(s);
+
+start_exit:
+	return ret;
+}
+
+struct platform_device*  rot_get_platform_device(void)
+{
+	struct device *dev;
+
+	dev = bus_find_device_by_name(&platform_bus_type, NULL, ROT_DEVICE_NAME);
+	if (!dev) {
+		printk("%s: failed to find device\n", __func__);
+		return NULL;
+	}
+
+	return to_platform_device(dev);
+}
+
+static int rot_k_open(struct inode *node, struct file *file)
+{
+	int ret = 0;
+	struct rot_k_file *fd = NULL;
+	struct miscdevice *md = file->private_data ;
+	struct rot_k_private *rot_private = NULL;
+
+	if (!md) {
+		ret = -EFAULT;
+		printk("rot_k_open fail miscdevice NULL \n");
+		goto exit;
+	}
+
+	rot_private = md->this_device->platform_data;
+	if (!rot_private) {
+		ret = -EFAULT;
+		printk("rot_k_open fail rot_private NULL \n");
+		goto exit;
+	}
+
+	fd = vzalloc(sizeof(*fd));
+	if (!fd) {
+		ret = -ENOMEM;
+		printk("rot_k_open fail alloc \n");
+		goto exit;
+	}
+	fd->rot_private = rot_private;
+	fd->drv_private.rot_fd = (void*)fd;
+	fd ->dn = md->this_device->of_node;
+
+	spin_lock_init(&fd->drv_private.rot_drv_lock);
+
+	sema_init(&fd->rot_done_sem, 0);
+
+	file->private_data = fd;
+
+	ROTATE_TRACE("rot_k_open success\n");
+
+exit:
+	return ret;
+}
+
+static int rot_k_release(struct inode *node, struct file *file)
+{
+	struct rot_k_private *rot_private;
+	struct rot_k_file *fd;
+
+	fd = file->private_data;
+	if (!fd) {
+		goto release_exit;
+	}
+
+	rot_private = fd->rot_private;
+	if (!rot_private) {
+		goto fd_free;
+	}
+
+	down(&rot_private->start_sem);
+	up(&rot_private->start_sem);
+
+fd_free:
+	vfree(fd);
+	fd = NULL;
+	file->private_data = NULL;
+
+release_exit:
+
+	ROTATE_TRACE("rot_k_release\n");
+
+	return 0;
+}
+
+static long rot_k_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
+{
+	int ret = 0;
+	struct rot_k_private *rot_private;
+	struct rot_k_file *fd;
+	ROT_CFG_T params;
+	ROT_PARAM_CFG_T *s;
+
+	fd = file->private_data;
+	if (!fd) {
+		ret = - EFAULT;
+		printk("rot_k_ioctl fail fd NULL \n");
+		goto ioctl_exit;
+	}
+
+	rot_private = fd->rot_private;
+	if (!rot_private) {
+		ret = -EFAULT;
+		printk("rot_k_ioctl fail rot private NULL \n");
+		goto ioctl_exit;
+	}
+
+	s = &(fd->drv_private.cfg);
+
+	switch (cmd) {
+	case ROT_IO_START:
+		down(&rot_private->start_sem);
+
+		ret = rot_k_module_en(fd->dn);
+		if (unlikely(ret)) {
+			printk("rot_k_ioctl error : rot_k_module_en\n");
+			up(&rot_private->start_sem);
+			goto ioctl_exit;
+		}
+
+		ret = rot_k_isr_reg(rot_k_irq, &fd->drv_private);
+		if (unlikely(ret)) {
+			printk("rot_k_ioctl error : Failed to register rot ISR \n");
+			rot_k_module_dis(fd ->dn);
+			up(&rot_private->start_sem);
+			goto ioctl_exit;
+		}
+
+		ret = copy_from_user(&params, (ROT_CFG_T *) arg, sizeof(ROT_CFG_T));
+		if (ret) {
+			printk("rot_k_ioctl error, failed get user info \n");
+			rot_k_module_dis(fd ->dn);
+			up(&rot_private->start_sem);
+			goto ioctl_exit;
+		}
+
+		ret = rot_k_io_cfg(&params,&fd->drv_private.cfg);
+		if (ret) {
+			printk("rot_k_ioctl error, failed cfg \n");
+			rot_k_module_dis(fd ->dn);
+			up(&rot_private->start_sem);
+			goto ioctl_exit;
+		}
+
+		ret = rot_k_start(fd);
+		if (ret) {
+			printk("rot_k_ioctl error: failed start \n");
+			rot_k_module_dis(fd ->dn);
+			up(&rot_private->start_sem);
+			goto ioctl_exit;
+		}
+
+		if (0 == rot_k_is_end(s)) {
+			ret = down_timeout(&fd->rot_done_sem, msecs_to_jiffies(ROT_TIMEOUT));
+			//ret = down_interruptible(&fd->rot_done_sem);
+			if (ret) {
+				printk("rot_k_ioctl error: rot_k_thread y wait error \n");
+				goto ioctl_out;
+			}
+
+			ROTATE_TRACE("rot_k_ioctl: rot_k_start y done, uv start. \n");
+
+			rot_k_set_UV_param(s);
+			ret = rot_k_start(fd);
+			if (ret) {
+				printk("rot_k_ioctl error: failed second start \n");
+				rot_k_module_dis(fd ->dn);
+				up(&rot_private->start_sem);
+				goto ioctl_exit;
+			}
+		}
+
+		ret = down_timeout(&fd->rot_done_sem, msecs_to_jiffies(ROT_TIMEOUT));
+		if (ret) {
+		printk("rot_k_ioctl error: rot_k_thread  wait error \n");
+		goto ioctl_out;
+		}
+
+		rot_k_close();
+
+		rot_k_module_dis(fd ->dn);
+
+		up(&rot_private->start_sem);
+		break;
+	default:
+		break;
+	}
+
+ioctl_exit:
+
+	ROTATE_TRACE("rot_k_ioctl ret=%d \n", ret);
+	return ret;
+
+ioctl_out:
+	rot_k_isr_reg(NULL, NULL);
+	dcam_rotation_end();
+	rot_k_close();
+	rot_k_module_dis(fd ->dn);
+	up(&rot_private->start_sem);
+	return ret;
+
+}
+
+static struct file_operations rotation_fops = {
+	.owner = THIS_MODULE,
+	.open = rot_k_open,
+	.unlocked_ioctl = rot_k_ioctl,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl = rot_k_ioctl,
+#endif
+	.release = rot_k_release,
+};
+
+static struct miscdevice rotation_dev = {
+	.minor = ROTATION_MINOR,
+	.name = ROT_DEVICE_NAME,
+	.fops = &rotation_fops,
+};
+
+int rot_k_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct rot_k_private *rot_private;
+	struct device *dev = NULL;
+
+	printk(KERN_ALERT "rot_k_probe called\n");
+
+	rot_private = devm_kzalloc(&pdev->dev, sizeof(*rot_private), GFP_KERNEL);
+	if (!rot_private) {
+		return -ENOMEM;
+	}
+
+	sema_init(&rot_private->start_sem, 1);
+
+	platform_set_drvdata(pdev, rot_private);
+
+	ret = misc_register(&rotation_dev);
+	if (ret) {
+		printk(KERN_ERR "cannot register miscdev on minor=%d (%d)\n",
+			ROTATION_MINOR, ret);
+		ret = -EACCES;
+		goto probe_out;
+	}
+	dev = rotation_dev.this_device;
+	dev->of_node = pdev->dev.of_node;
+	dev->platform_data = (void *)rot_private;
+
+	printk(KERN_ALERT " rot_k_probe Success\n");
+	goto exit;
+probe_out:
+	devm_kfree(&pdev->dev, rot_private);
+	platform_set_drvdata(pdev, NULL);
+exit:
+	return 0;
+}
+
+static int rot_k_remove(struct platform_device *pdev)
+{
+	struct rot_k_private *rot_private;
+
+	rot_private = platform_get_drvdata(pdev);
+
+	if (!rot_private)
+		goto remove_exit;
+
+	printk(KERN_INFO "rot_k_remove called !\n");
+	misc_deregister(&rotation_dev);
+
+	devm_kfree(&pdev->dev, rot_private);
+	platform_set_drvdata(pdev, NULL);
+	printk(KERN_INFO "rot_k_remove Success !\n");
+
+remove_exit:
+	return 0;
+}
+
+static const struct of_device_id of_match_table_rot[] = {
+	{ .compatible = "sprd,sprd_rotation", },
+	{ },
+};
+
+static struct platform_driver rotation_driver = {
+	.probe = rot_k_probe,
+	.remove = rot_k_remove,
+	.driver = {
+		.owner = THIS_MODULE,
+		.name = ROT_DEVICE_NAME,
+		.of_match_table = of_match_ptr(of_match_table_rot),
+		},
+};
+
+int __init rot_k_init(void)
+{
+	printk(KERN_INFO "rot_k_init called !\n");
+	if (platform_driver_register(&rotation_driver) != 0) {
+		printk("platform device register Failed \n");
+		return -1;
+	}
+	return 0;
+}
+
+void rot_k_exit(void)
+{
+	printk(KERN_INFO "rot_k_exit called !\n");
+	platform_driver_unregister(&rotation_driver);
+}
+
+module_init(rot_k_init);
+module_exit(rot_k_exit);
+MODULE_DESCRIPTION("rotation Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/sprd_rotation/img_rot.h b/drivers/media/sprd_rotation/img_rot.h
new file mode 100644
index 00000000..042b1cf3
--- /dev/null
+++ b/drivers/media/sprd_rotation/img_rot.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2012 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+
+#ifndef _IMG_ROT_H_
+#define _IMG_ROT_H_
+
+#endif
diff --git a/drivers/media/sprd_rotation/rot_drv.c b/drivers/media/sprd_rotation/rot_drv.c
new file mode 100644
index 00000000..335a8fcf
--- /dev/null
+++ b/drivers/media/sprd_rotation/rot_drv.c
@@ -0,0 +1,339 @@
+/*
+ * Copyright (C) 2012 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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/kernel.h>
+#include <linux/interrupt.h>
+#include <asm/io.h>
+#include <video/sprd_rot_k.h>
+#ifndef CONFIG_64BIT
+#include <soc/sprd/hardware.h>
+#endif
+#include <soc/sprd/sci.h>
+#include "img_rot.h"
+#include "rot_drv.h"
+#include "dcam_drv.h"
+
+#define ALGIN_FOUR 0x03
+
+int rot_k_module_en(struct device_node *dn)
+{
+	int ret = 0;
+
+	ret = dcam_module_en(dn);
+
+	if (ret) {
+		printk("dcam_module_en, failed  %d \n", ret);
+	}
+
+	return ret;
+}
+
+int rot_k_module_dis(struct device_node *dn)
+{
+	int ret = 0;
+
+	ret = dcam_module_dis(dn);
+
+	if (ret) {
+		printk("rot_k_module_dis, failed  %d \n", ret);
+	}
+
+	return ret;
+}
+
+static void rot_k_ahb_reset(void)
+{
+	sci_glb_set(REG_ROTATION_AHB_RESET, ROT_AHB_RESET_BIT);
+	sci_glb_clr(REG_ROTATION_AHB_RESET, ROT_AHB_RESET_BIT);
+}
+
+static void rot_k_set_src_addr(uint32_t src_addr)
+{
+	REG_WR(REG_ROTATION_SRC_ADDR, src_addr);
+}
+
+static void rot_k_set_dst_addr(uint32_t dst_addr)
+{
+	REG_WR(REG_ROTATION_DST_ADDR, dst_addr);
+}
+
+static void rot_k_set_img_size(ROT_SIZE_T * size)
+{
+	REG_WR(REG_ROTATION_OFFSET_START, 0x00000000);
+	REG_WR(REG_ROTATION_IMG_SIZE,
+		((size->w & 0x1FFF) | ((size->h & 0x1FFF) << 13)));
+	REG_WR(REG_ROTATION_ORIGWIDTH, (size->w & 0x1FFF));
+}
+
+static void rot_k_set_endian(ROT_ENDIAN_E src_end, ROT_ENDIAN_E dst_end)
+{
+	dcam_glb_reg_awr(REG_ROTATION_ENDIAN_SEL,
+		(~(ROT_RD_ENDIAN_MASK |ROT_WR_ENDIAN_MASK)), DCAM_ENDIAN_REG);
+
+	dcam_glb_reg_owr(REG_ROTATION_ENDIAN_SEL,
+		(ROT_AXI_RD_WORD_ENDIAN_BIT |
+		ROT_AXI_WR_WORD_ENDIAN_BIT |
+		(src_end << 16) |(dst_end << 14)), DCAM_ENDIAN_REG);
+}
+
+static void rot_k_set_pixel_mode(ROT_PIXEL_FORMAT_E pixel_format)
+{
+	REG_AWR(REG_ROTATION_PATH_CFG, (~ROT_PIXEL_FORMAT_BIT));
+	REG_OWR(REG_ROTATION_PATH_CFG, ((pixel_format & 0x1) << 1));
+	return;
+}
+
+static void rot_k_set_UV_mode(ROT_UV_MODE_E uv_mode)
+{
+	REG_AWR(REG_ROTATION_PATH_CFG, (~ROT_UV_MODE_BIT));
+	REG_OWR(REG_ROTATION_PATH_CFG, ((uv_mode & 0x1) << 4));
+	return;
+}
+
+static void rot_k_set_dir(ROT_ANGLE_E angle)
+{
+	REG_AWR(REG_ROTATION_PATH_CFG, (~ROT_MODE_MASK));
+	REG_OWR(REG_ROTATION_PATH_CFG, ((angle & 0x3) << 2));
+}
+
+static void rot_k_enable(void)
+{
+	REG_OWR(REG_ROTATION_PATH_CFG, ROT_EB_BIT);
+}
+
+static void rot_k_disable(void)
+{
+	REG_AWR(REG_ROTATION_PATH_CFG, (~ROT_EB_BIT));
+}
+
+static void rot_k_start(void)
+{
+	REG_OWR(REG_ROTATION_PATH_CFG, ROT_START_BIT);
+}
+
+
+int rot_k_isr(struct dcam_frame* dcam_frm, void* u_data)
+{
+	unsigned long flag;
+	rot_isr_func user_isr_func;
+	struct rot_drv_private *private = (struct rot_drv_private *)u_data;
+
+	(void)dcam_frm;
+
+	if (!private) {
+		goto isr_exit;
+	}
+
+	dcam_rotation_end();
+
+	spin_lock_irqsave(&private->rot_drv_lock, flag);
+	user_isr_func = private->user_isr_func;
+	if (user_isr_func) {
+		(*user_isr_func)(private->rot_fd);
+	}
+	spin_unlock_irqrestore(&private->rot_drv_lock, flag);
+
+isr_exit:
+	return 0;
+}
+
+int rot_k_isr_reg(rot_isr_func user_func,struct rot_drv_private *drv_private)
+{
+	int rtn = 0;
+	unsigned long flag;
+
+	if (user_func) {
+		if (!drv_private) {
+			rtn = -EFAULT;
+			goto reg_exit;
+		}
+
+		spin_lock_irqsave(&drv_private->rot_drv_lock, flag);
+		drv_private->user_isr_func = user_func;
+		spin_unlock_irqrestore(&drv_private->rot_drv_lock, flag);
+
+		dcam_reg_isr(DCAM_ROT_DONE, rot_k_isr, drv_private);
+	} else {
+		dcam_reg_isr(DCAM_ROT_DONE, NULL, NULL);
+	}
+
+reg_exit:
+	return rtn;
+}
+
+int rot_k_is_end(ROT_PARAM_CFG_T *s)
+{
+	return s->is_end ;
+}
+
+static uint32_t rot_k_get_end_mode(ROT_PARAM_CFG_T *s)
+{
+	uint32_t ret = 1;
+
+	switch (s->format) {
+	case ROT_YUV422:
+	case ROT_YUV420:
+		ret = 0;
+		break;
+	case ROT_RGB565:
+		ret = 1;
+		break;
+	default:
+		ret = 1;
+		break;
+	}
+	return ret;
+}
+
+static ROT_PIXEL_FORMAT_E rot_k_get_pixel_format(ROT_PARAM_CFG_T *s)
+{
+	ROT_PIXEL_FORMAT_E ret = ROT_ONE_BYTE;
+
+	switch (s->format) {
+	case ROT_YUV422:
+	case ROT_YUV420:
+		ret = ROT_ONE_BYTE;
+		break;
+	case ROT_RGB565:
+		ret = ROT_TWO_BYTES;
+		break;
+	default:
+		ret = ROT_ONE_BYTE;
+		break;
+	}
+
+	return ret;
+}
+
+static int rot_k_set_y_param(ROT_CFG_T * param_ptr,ROT_PARAM_CFG_T *s)
+{
+	int ret = 0;
+
+	if (!param_ptr || !s) {
+		ret = -EFAULT;
+		goto param_exit;
+	}
+
+	memcpy((void *)&(s->img_size), (void *)&(param_ptr->img_size),
+		sizeof(ROT_SIZE_T));
+	memcpy((void *)&(s->src_addr), (void *)&(param_ptr->src_addr),
+		sizeof(ROT_ADDR_T));
+	memcpy((void *)&(s->dst_addr), (void *)&(param_ptr->dst_addr),
+		sizeof(ROT_ADDR_T));
+
+	s->s_addr = param_ptr->src_addr.y_addr;
+	s->d_addr = param_ptr->dst_addr.y_addr;
+	s->format = param_ptr->format;
+	s->angle = param_ptr->angle;
+	s->pixel_format = rot_k_get_pixel_format(s);
+	s->is_end = rot_k_get_end_mode(s);
+	s->uv_mode = ROT_NORMAL;
+	s->src_endian = 1;/*param_ptr->src_addr;*/
+	s->dst_endian = 1;/*param_ptr->dst_endian;*/
+
+param_exit:
+	return ret;
+}
+
+int rot_k_set_UV_param(ROT_PARAM_CFG_T *s)
+{
+	s->s_addr = s->src_addr.u_addr;
+	s->d_addr = s->dst_addr.u_addr;
+	s->img_size.w >>= 0x01;
+	s->pixel_format = ROT_TWO_BYTES;
+	if (ROT_YUV422 == s->format){
+		s->uv_mode = ROT_UV422;
+	} else if (ROT_YUV420 == s->format) {
+		s->img_size.h >>= 0x01;
+	}
+	return 0;
+}
+
+void rot_k_register_cfg(ROT_PARAM_CFG_T *s)
+{
+	rot_k_ahb_reset();
+	dcam_rotation_start();
+	rot_k_set_src_addr(s->s_addr);
+	rot_k_set_dst_addr(s->d_addr);
+	rot_k_set_img_size(&(s->img_size));
+	rot_k_set_pixel_mode(s->pixel_format);
+	rot_k_set_UV_mode(s->uv_mode);
+	rot_k_set_dir(s->angle);
+	rot_k_set_endian(s->src_endian, s->dst_endian);
+	rot_k_enable();
+	rot_k_start();
+	ROTATE_TRACE("rot_k_register_cfg.\n");
+}
+
+void rot_k_close(void)
+{
+	rot_k_disable();
+}
+
+static int rot_k_check_param(ROT_CFG_T * param_ptr)
+{
+	if (NULL == param_ptr) {
+		printk("Rotation: the param ptr is null.\n");
+		return -1;
+	}
+
+	if ((param_ptr->src_addr.y_addr & ALGIN_FOUR)
+		|| (param_ptr->src_addr.u_addr & ALGIN_FOUR)
+		|| (param_ptr->src_addr.v_addr & ALGIN_FOUR)
+		|| (param_ptr->dst_addr.y_addr & ALGIN_FOUR)
+		|| (param_ptr->dst_addr.u_addr & ALGIN_FOUR)
+		|| (param_ptr->dst_addr.v_addr & ALGIN_FOUR)) {
+		printk("Rotation: the addr not algin.\n");
+		return -1;
+	}
+
+	if (!(ROT_YUV422 == param_ptr->format
+		|| ROT_YUV420 == param_ptr->format
+		||ROT_RGB565 == param_ptr->format)) {
+		printk("Rotation: data for err : %d.\n", param_ptr->format);
+		return -1;
+	}
+
+	if (ROT_MIRROR < param_ptr->angle) {
+		printk("Rotation: data angle err : %d.\n", param_ptr->angle);
+		return -1;
+	}
+#if 0
+	if (ROT_ENDIAN_MAX <= param_ptr->src_endian ||
+		ROT_ENDIAN_MAX <= param_ptr->dst_endian ) {
+		ROTATE_TRACE("Rotation: endian err : %d %d.\n", param_ptr->src_endian,
+			param_ptr->dst_endian);
+		return -1;
+	}
+#endif
+	return 0;
+}
+
+int rot_k_io_cfg(ROT_CFG_T * param_ptr,ROT_PARAM_CFG_T *s)
+{
+	int ret = 0;
+	ROT_CFG_T *p = param_ptr;
+
+	ROTATE_TRACE("rot_k_io_cfg start \n");
+	ROTATE_TRACE("w=%d, h=%d \n", p->img_size.w, p->img_size.h);
+	ROTATE_TRACE("format=%d, angle=%d \n", p->format, p->angle);
+	ROTATE_TRACE("s.y=%x, s.u=%x, s.v=%x \n", p->src_addr.y_addr, p->src_addr.u_addr, p->src_addr.v_addr);
+	ROTATE_TRACE("d.y=%x, d.u=%x, d.v=%x \n", p->dst_addr.y_addr, p->dst_addr.u_addr, p->dst_addr.v_addr);
+
+	ret = rot_k_check_param(param_ptr);
+
+	if (0 == ret)
+		ret = rot_k_set_y_param(param_ptr,s);
+
+	return ret;
+}
diff --git a/drivers/media/sprd_rotation/rot_drv.h b/drivers/media/sprd_rotation/rot_drv.h
new file mode 100644
index 00000000..5f4ac9a3
--- /dev/null
+++ b/drivers/media/sprd_rotation/rot_drv.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2012 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+#ifndef _ROT_DRV_H_
+#define _ROT_DRV_H_
+
+#include <linux/of.h>
+#include <linux/of_device.h>
+
+#include "rot_reg.h"
+
+/*#define ROTATE_DEBUG*/
+
+#ifdef ROTATE_DEBUG
+	#define ROTATE_TRACE printk
+#else
+	#define ROTATE_TRACE pr_debug
+#endif
+
+
+typedef void (*rot_isr_func)(void *rot_k_private);
+
+typedef struct _rot_param_tag {
+	ROT_SIZE_T img_size;
+	ROT_DATA_FORMAT_E format;
+	ROT_ANGLE_E angle;
+	ROT_ADDR_T src_addr;
+	ROT_ADDR_T dst_addr;
+	uint32_t s_addr;
+	uint32_t d_addr;
+	ROT_PIXEL_FORMAT_E pixel_format;
+	ROT_UV_MODE_E uv_mode;
+	int is_end;
+	ROT_ENDIAN_E src_endian;
+	ROT_ENDIAN_E dst_endian;
+} ROT_PARAM_CFG_T;
+
+struct rot_drv_private{
+	ROT_PARAM_CFG_T cfg;
+	rot_isr_func user_isr_func;
+	spinlock_t rot_drv_lock;
+	void *rot_fd;/*rot file*/
+};
+
+int rot_k_module_en(struct device_node *dn);
+int rot_k_module_dis(struct device_node *dn);
+int rot_k_isr_reg(rot_isr_func user_func,struct rot_drv_private *drv_private);
+int rot_k_is_end(ROT_PARAM_CFG_T *s);
+int rot_k_set_UV_param(ROT_PARAM_CFG_T *s);
+void rot_k_register_cfg(ROT_PARAM_CFG_T *s);
+void rot_k_close(void);
+int rot_k_io_cfg(ROT_CFG_T * param_ptr, ROT_PARAM_CFG_T *s);
+#endif
diff --git a/drivers/media/sprd_rotation/rot_reg.h b/drivers/media/sprd_rotation/rot_reg.h
new file mode 100644
index 00000000..33802d9e
--- /dev/null
+++ b/drivers/media/sprd_rotation/rot_reg.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2012 Spreadtrum Communications Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ */
+#ifndef _REG_SCALE_TIGER_H_
+#define _REG_SCALE_TIGER_H_
+
+#ifndef CONFIG_64BIT
+#include <soc/sprd/globalregs.h>
+#endif
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+typedef enum {
+	ROT_ONE_BYTE = 0,
+	ROT_TWO_BYTES,
+	ROT_BYTE_MAX
+} ROT_PIXEL_FORMAT_E;
+
+typedef enum {
+	ROT_NORMAL = 0,
+	ROT_UV422,
+	ROT_DATA_FORMAT_MAX
+} ROT_UV_MODE_E;
+
+#define ROT_BASE DCAM_BASE
+#define REG_ROTATION_CTRL (ROT_BASE + 0x0004UL)
+#define REG_ROTATION_INT_STS (ROT_BASE + 0x003CUL)
+#define REG_ROTATION_INT_MASK (ROT_BASE + 0x0040UL)
+#define REG_ROTATION_INT_CLR (ROT_BASE + 0x0044UL)
+#define REG_ROTATION_INT_RAW (ROT_BASE + 0x0048UL)
+#define REG_ROTATION_ENDIAN_SEL (ROT_BASE + 0x006CUL)
+#define REG_ROTATION_SRC_ADDR (ROT_BASE + 0x0080UL)
+#define REG_ROTATION_DST_ADDR (ROT_BASE + 0x0084UL)
+#define REG_ROTATION_PATH_CFG (ROT_BASE + 0x8000UL)
+#define REG_ROTATION_ORIGWIDTH (ROT_BASE + 0x8004UL)
+#define REG_ROTATION_OFFSET_START (ROT_BASE + 0x8008UL)
+#define REG_ROTATION_IMG_SIZE (ROT_BASE + 0x800CUL)
+#define REG_ROTATION_AHB_RESET (SPRD_MMAHB_BASE + 0x04UL)
+
+#define ROT_IRQ_BIT (1 << 15)
+#define ROT_START_BIT (1 << 5)
+#define ROT_AXI_RD_WORD_ENDIAN_BIT (1 << 19)
+#define ROT_AXI_WR_WORD_ENDIAN_BIT (1 << 18)
+#define ROT_RD_ENDIAN_MASK (3 << 16)
+#define ROT_WR_ENDIAN_MASK (3 << 14)
+
+#define ROT_EB_BIT (1 << 0)
+#define ROT_PIXEL_FORMAT_BIT (1 << 1)
+#define ROT_MODE_MASK (3 << 2)
+#define ROT_UV_MODE_BIT (1 << 4)
+
+#define ROT_AHB_RESET_BIT (1 << 10)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
-- 
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