From: 黄涛 <huangtao@rock-chips.com>
Date: Thu, 21 Feb 2013 10:30:03 +0000 (+0800)
Subject: rk: rm video_state.c which replace by ddr_freq.c
X-Git-Tag: firefly_0821_release~7586
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=974cc09a3eb544bd8323eb0bafd55e7fe24855e9;p=firefly-linux-kernel-4.4.55.git

rk: rm video_state.c which replace by ddr_freq.c
---

diff --git a/arch/arm/plat-rk/video_state.c b/arch/arm/plat-rk/video_state.c
deleted file mode 100644
index ebc70024695f..000000000000
--- a/arch/arm/plat-rk/video_state.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Copyright (C) 2012 ROCKCHIP, 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/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/clk.h>
-#include <linux/uaccess.h>
-#include <mach/ddr.h>
-
-#ifdef CONFIG_ARCH_RK2928
-#define VIDEO_DDR_RATE	(300*1000*1000)
-#else
-#define VIDEO_DDR_RATE	(300*1000*1000)
-#endif
-
-static struct clk *ddr_clk;
-static unsigned long ddr_rate;
-static char video_state = '0';
-
-static int video_state_open(struct inode *inode, struct file *file)
-{
-	ddr_rate = clk_get_rate(ddr_clk);
-	return 0;
-}
-
-static int video_state_release(struct inode *inode, struct file *file)
-{
-	clk_set_rate(ddr_clk, ddr_rate);
-	return 0;
-}
-
-static ssize_t video_state_read(struct file *file, char __user *buffer,
-				size_t count, loff_t *ppos)
-{
-	if (copy_to_user(buffer, &video_state, 1))
-		return -EFAULT;
-	return 1;
-}
-
-static ssize_t video_state_write(struct file *file, const char __user *buffer,
-				 size_t count, loff_t *ppos)
-{
-	unsigned long rate = 0;
-
-	if (ddr_rate <= 333000000)
-		return count;
-	if (count < 1)
-		return count;
-	if (copy_from_user(&video_state, buffer, 1)) {
-		return -EFAULT;
-	}
-
-	switch (video_state) {
-	case '0':
-		rate = ddr_rate;
-		break;
-	case '1':
-		rate = VIDEO_DDR_RATE;
-		break;
-	default:
-		return -EINVAL;
-	}
-	clk_set_rate(ddr_clk, rate);
-	return count;
-}
-
-static const struct file_operations video_state_fops = {
-	.owner	= THIS_MODULE,
-	.open	= video_state_open,
-	.release= video_state_release,
-	.read	= video_state_read,
-	.write	= video_state_write,
-};
-
-static struct miscdevice video_state_dev = {
-	.fops	= &video_state_fops,
-	.name	= "video_state",
-	.minor	= MISC_DYNAMIC_MINOR,
-};
-
-static int __init video_state_init(void)
-{
-	ddr_clk = clk_get(NULL, "ddr");
-	if (IS_ERR(ddr_clk))
-		return PTR_ERR(ddr_clk);
-
-	return misc_register(&video_state_dev);
-}
-
-static void __exit video_state_exit(void)
-{
-	misc_deregister(&video_state_dev);
-	clk_put(ddr_clk);
-}
-
-module_init(video_state_init);
-module_exit(video_state_exit);
-MODULE_LICENSE("GPL");