obj-y += ../plat-rk/clock.o
obj-y += clock_data.o
obj-y += ddr.o
-obj-$(CONFIG_DDR_FREQ) += ddr_freq.o video_state.o
+obj-$(CONFIG_DDR_FREQ) += ddr_freq.o
obj-$(CONFIG_CPU_FREQ) += cpufreq.o
obj-$(CONFIG_DVFS) += dvfs.o
obj-$(CONFIG_PM) += pm.o
+++ /dev/null
-/* arch/arm/mach-rk30/video_state.c
- *
- * 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/poll.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/sched.h>
-#include <mach/ddr.h>
-#include <linux/cpu.h>
-#include <linux/clk.h>
-
-
-#ifdef CONFIG_DDR_SDRAM_FREQ
-#define DDR_FREQ (CONFIG_DDR_SDRAM_FREQ)
-#else
-#define DDR_FREQ 400
-#endif
-
-
-int rk_video_state=0;
-static struct clk * ddr_clk;
-
-
-#define VIDEO_STATE_NAME "video_state"
-#define BUFFER_SIZE 16
-
-MODULE_AUTHOR("Mike Lockwood <lockwood@android.com>");
-MODULE_DESCRIPTION("Key chord input driver");
-MODULE_SUPPORTED_DEVICE("video_state");
-MODULE_LICENSE("GPL");
-
-/*
- * video_state_read is used to read video_state events from the driver
- */
-static ssize_t video_state_read(struct file *file, char __user *buffer,
- size_t count, loff_t *ppos)
-{
- return count;
-}
-
-/*
- * video_state_write is used to configure the driver
- */
-static ssize_t video_state_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
-{
- char *parameters= 0;
- int vedeo_state;
- int set_rate=0;
- int set_rate_old=0;
-
- if(DDR_FREQ<=333)
- return count;
- //if (count < sizeof(struct input_keychord))
- // return -EINVAL;
- parameters = kzalloc(count, GFP_KERNEL);
- if (!parameters)
- return -ENOMEM;
-
- /* read list of keychords from userspace */
- if (copy_from_user(parameters, buffer, count)) {
- kfree(parameters);
- return -EFAULT;
- }
- sscanf(parameters, "%d", &vedeo_state);
-
- //printk("video_state %d\n",vedeo_state);
- switch(vedeo_state)
- {
- case 0:
- rk_video_state=0;
- set_rate=DDR_FREQ;
- break;
- case 1:
- rk_video_state=1;
- set_rate=330;
- break;
- default:
- rk_video_state=0;
- return -EFAULT;
- }
- set_rate_old=clk_get_rate(ddr_clk);
- set_rate=clk_round_rate(ddr_clk,set_rate*1000*1000);
- if(set_rate_old!=set_rate)
- {
- clk_set_rate(ddr_clk,set_rate);
- //printk("ddr rate=%d\n",set_rate/(1000*1000));
- }
- kfree(parameters);
- return count;
-}
-
-static unsigned int video_state_poll(struct file *file, poll_table *wait)
-{
- return 0;
-}
-
-static int video_state_open(struct inode *inode, struct file *file)
-{
-
-
- return 0;
-}
-
-static int video_state_release(struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-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,
- .poll = video_state_poll,
-};
-
-static struct miscdevice video_state = {
- .fops = &video_state_fops,
- .name = VIDEO_STATE_NAME,
- .minor = MISC_DYNAMIC_MINOR,
-};
-
-
-static int __init video_state_init(void)
-{
- ddr_clk=clk_get(NULL,"ddr");
- if(IS_ERR(ddr_clk))
- return -1;
-
-
- return misc_register(&video_state);
-}
-
-static void __exit video_state_exit(void)
-{
- misc_deregister(&video_state);
-}
-
-module_init(video_state_init);
-module_exit(video_state_exit);
-
-
-
obj-$(CONFIG_CPU_IDLE) += cpuidle.o
obj-$(CONFIG_CPU_FREQ) += cpufreq.o
obj-$(CONFIG_DVFS) += dvfs.o
-obj-$(CONFIG_DDR_FREQ) += ddr_freq.o video_state.o
+obj-$(CONFIG_DDR_FREQ) += ddr_freq.o
obj-$(CONFIG_RK30_I2C_INSRAM) += i2c_sram.o
CFLAGS_i2c_sram.o += -mthumb
+++ /dev/null
-/* arch/arm/mach-rk30/video_state.c
- *
- * 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/poll.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/spinlock.h>
-#include <linux/fs.h>
-#include <linux/miscdevice.h>
-#include <linux/sched.h>
-#include <mach/ddr.h>
-#include <linux/cpu.h>
-#include <linux/clk.h>
-
-
-#ifdef CONFIG_DDR_SDRAM_FREQ
-#define DDR_FREQ (CONFIG_DDR_SDRAM_FREQ)
-#else
-#define DDR_FREQ 400
-#endif
-
-
-int rk_video_state=0;
-static struct clk * ddr_clk;
-
-
-#define VIDEO_STATE_NAME "video_state"
-#define BUFFER_SIZE 16
-
-MODULE_AUTHOR("Mike Lockwood <lockwood@android.com>");
-MODULE_DESCRIPTION("Key chord input driver");
-MODULE_SUPPORTED_DEVICE("video_state");
-MODULE_LICENSE("GPL");
-
-/*
- * video_state_read is used to read video_state events from the driver
- */
-static ssize_t video_state_read(struct file *file, char __user *buffer,
- size_t count, loff_t *ppos)
-{
- return count;
-}
-
-/*
- * video_state_write is used to configure the driver
- */
-static ssize_t video_state_write(struct file *file, const char __user *buffer,
- size_t count, loff_t *ppos)
-{
- char *parameters= 0;
- int vedeo_state;
- int set_rate=0;
- int set_rate_old=0;
-
- if(DDR_FREQ<=333)
- return count;
- //if (count < sizeof(struct input_keychord))
- // return -EINVAL;
- parameters = kzalloc(count, GFP_KERNEL);
- if (!parameters)
- return -ENOMEM;
-
- /* read list of keychords from userspace */
- if (copy_from_user(parameters, buffer, count)) {
- kfree(parameters);
- return -EFAULT;
- }
- sscanf(parameters, "%d", &vedeo_state);
-
- //printk("video_state %d\n",vedeo_state);
- switch(vedeo_state)
- {
- case 0:
- rk_video_state=0;
- set_rate=DDR_FREQ;
- break;
- case 1:
- rk_video_state=1;
- set_rate=300;
- break;
- default:
- rk_video_state=0;
- return -EFAULT;
- }
- set_rate_old=clk_get_rate(ddr_clk);
- set_rate=clk_round_rate(ddr_clk,set_rate*1000*1000);
- if(set_rate_old!=set_rate)
- {
- clk_set_rate(ddr_clk,set_rate);
- //printk("ddr rate=%d\n",set_rate/(1000*1000));
- }
- kfree(parameters);
- return count;
-}
-
-static unsigned int video_state_poll(struct file *file, poll_table *wait)
-{
- return 0;
-}
-
-static int video_state_open(struct inode *inode, struct file *file)
-{
-
-
- return 0;
-}
-
-static int video_state_release(struct inode *inode, struct file *file)
-{
- return 0;
-}
-
-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,
- .poll = video_state_poll,
-};
-
-static struct miscdevice video_state = {
- .fops = &video_state_fops,
- .name = VIDEO_STATE_NAME,
- .minor = MISC_DYNAMIC_MINOR,
-};
-
-
-static int __init video_state_init(void)
-{
- ddr_clk=clk_get(NULL,"ddr");
- if(IS_ERR(ddr_clk))
- return -1;
-
-
- return misc_register(&video_state);
-}
-
-static void __exit video_state_exit(void)
-{
- misc_deregister(&video_state);
-}
-
-module_init(video_state_init);
-module_exit(video_state_exit);
-
-
-
obj-y += sram.o
CFLAGS_sram.o += -mthumb
obj-$(CONFIG_DDR_TEST) += memtester.o
+obj-$(CONFIG_DDR_FREQ) += video_state.o
--- /dev/null
+/*
+ * 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 (330*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");
projects / firefly-linux-kernel-4.4.55.git / commitdiff