291 lines
7.0 KiB
C
291 lines
7.0 KiB
C
/*
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* driver/misc/sec_misc.c
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*
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* driver supporting miscellaneous functions for Samsung P-series device
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*
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* COPYRIGHT(C) Samsung Electronics Co., Ltd. 2006-2011 All Right Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/miscdevice.h>
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#include <linux/vmalloc.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/firmware.h>
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#include <linux/wakelock.h>
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#include <linux/blkdev.h>
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#include <mach/gpio.h>
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#include <linux/sec_param.h>
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#include <mach/sec_debug.h>
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#include <linux/sec_class.h>
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#define MOVINAND_CHECKSUM
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#define RORY_CONTROL
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static struct wake_lock sec_misc_wake_lock;
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#ifdef MOVINAND_CHECKSUM
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unsigned char emmc_checksum_done;
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unsigned char emmc_checksum_pass;
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#endif
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static const struct file_operations sec_misc_fops = {
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.owner = THIS_MODULE,
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/* .read = sec_misc_read,
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.ioctl = sec_misc_ioctl,
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.open = sec_misc_open,
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.release = sec_misc_release, */
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};
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static struct miscdevice sec_misc_device = {
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.minor = MISC_DYNAMIC_MINOR,
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.name = "sec_misc",
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.fops = &sec_misc_fops,
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};
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#ifdef MOVINAND_CHECKSUM
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static ssize_t emmc_checksum_done_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return snprintf(buf, (int)sizeof(buf), "%d\n", emmc_checksum_done);
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}
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static ssize_t emmc_checksum_done_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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int state;
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if (sscanf(buf, "%i", &state) != 1 || (state < 0 || state > 1))
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return -EINVAL;
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emmc_checksum_done = (unsigned char)state;
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return size;
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}
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static DEVICE_ATTR(emmc_checksum_done, S_IRUGO | S_IWUSR ,
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emmc_checksum_done_show, emmc_checksum_done_store);
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static ssize_t emmc_checksum_pass_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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return snprintf(buf, (int)sizeof(buf), "%d\n", emmc_checksum_pass);
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}
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static ssize_t emmc_checksum_pass_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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int state;
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if (sscanf(buf, "%i", &state) != 1 || (state < 0 || state > 1))
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return -EINVAL;
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emmc_checksum_pass = (unsigned char)state;
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return size;
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}
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static DEVICE_ATTR(emmc_checksum_pass, S_IRUGO | S_IWUSR ,
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emmc_checksum_pass_show, emmc_checksum_pass_store);
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#endif /*MOVINAND_CHECKSUM*/
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#ifdef RORY_CONTROL
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static ssize_t rory_control_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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int rory_control;
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sec_get_param(param_rory_control, &rory_control);
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return snprintf(buf, (int)sizeof(buf), "%d\n", rory_control);
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}
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static ssize_t rory_control_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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int rory_control;
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sscanf(buf, "%i", &rory_control);
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pr_info("rory control store ..... %d\n", rory_control);
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/* write to param */
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sec_set_param(param_rory_control, &rory_control);
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return size;
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}
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static DEVICE_ATTR(rory_control, S_IRUGO | S_IWUSR ,
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rory_control_show, rory_control_store);
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#endif /*RORY_CONTROL*/
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#ifdef CONFIG_SEC_DEBUG
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static unsigned int convert_debug_level_str(const char *str)
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{
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if (strncasecmp(str, "0xA0A0", 6) == 0)
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return KERNEL_SEC_DEBUG_LEVEL_LOW;
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if (strncasecmp(str, "0xB0B0", 6) == 0)
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return KERNEL_SEC_DEBUG_LEVEL_MID;
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if (strncasecmp(str, "0xC0C0", 6) == 0)
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return KERNEL_SEC_DEBUG_LEVEL_HIGH;
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return 0;
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}
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static void convert_debug_level_int(unsigned int val, char *str)
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{
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if (val == KERNEL_SEC_DEBUG_LEVEL_LOW) {
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strlcpy(str, "0xA0A0", sizeof("0xA0A0") + 1);
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return;
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}
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if (val == KERNEL_SEC_DEBUG_LEVEL_MID) {
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strlcpy(str, "0xB0B0", sizeof("0xB0B0") + 1);
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return;
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}
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if (val == KERNEL_SEC_DEBUG_LEVEL_HIGH) {
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strlcpy(str, "0xC0C0", sizeof("0xC0C0") + 1);
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return;
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}
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}
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static ssize_t debug_level_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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char buffer[7];
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convert_debug_level_int(kernel_sec_get_debug_level(), buffer);
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return snprintf(buf, sizeof(buffer)+1, "%s\n", buffer);
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}
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static ssize_t debug_level_store(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t size)
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{
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int sec_debug_level = convert_debug_level_str(buf);
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if (sec_debug_level == 0)
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return -EINVAL;
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kernel_sec_set_debug_level(sec_debug_level);
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return size;
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}
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static DEVICE_ATTR(debug_level, S_IRUGO | S_IWUSR ,
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debug_level_show, debug_level_store);
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#endif
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#if defined(CONFIG_MACH_APEXQ) || defined(CONFIG_MACH_AEGIS2)
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static ssize_t slideCount_show
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(struct device *dev, struct device_attribute *attr, char *buf)
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{
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int slideCount;
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sec_get_param(param_slideCount, &slideCount);
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return snprintf(buf, sizeof(buf), "%d\n", slideCount);
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}
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static ssize_t slideCount_store
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(struct device *dev, struct device_attribute *attr,\
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const char *buf, size_t size)
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{
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int slideCount;
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sscanf(buf, "%i", &slideCount);
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sec_set_param(param_slideCount, &slideCount);
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return size;
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}
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static DEVICE_ATTR(slideCount, S_IRUGO | S_IWUSR | S_IWGRP,\
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slideCount_show, slideCount_store);
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#endif
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struct device *sec_misc_dev;
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static struct device_attribute *sec_misc_attrs[] = {
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&dev_attr_emmc_checksum_done,
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&dev_attr_emmc_checksum_pass,
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&dev_attr_rory_control,
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#ifdef CONFIG_SEC_DEBUG
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&dev_attr_debug_level,
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#endif
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#if defined(CONFIG_MACH_APEXQ) || defined(CONFIG_MACH_AEGIS2)
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&dev_attr_slideCount,
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#endif
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};
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static int __init sec_misc_init(void)
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{
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int ret = 0;
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int i;
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ret = misc_register(&sec_misc_device);
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if (ret < 0) {
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printk(KERN_ERR "misc_register failed!\n");
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goto failed_register_misc;
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}
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sec_misc_dev = device_create(sec_class, NULL, 0, NULL, "sec_misc");
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if (IS_ERR(sec_misc_dev)) {
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printk(KERN_ERR "failed to create device!\n");
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ret = -ENODEV;
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goto failed_create_device;
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}
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for (i = 0; i < ARRAY_SIZE(sec_misc_attrs) ; i++) {
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ret = device_create_file(sec_misc_dev, sec_misc_attrs[i]);
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if (ret < 0) {
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pr_err("failed to create device file - %s\n",
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dev_attr_emmc_checksum_done.attr.name);
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goto failed_create_device_file;
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}
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}
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wake_lock_init(&sec_misc_wake_lock, WAKE_LOCK_SUSPEND, "sec_misc");
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return 0;
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failed_create_device_file:
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if (i) {
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for (--i; i >= 0; i--)
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device_remove_file(sec_misc_dev, sec_misc_attrs[i]);
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}
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failed_create_device:
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misc_deregister(&sec_misc_device);
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failed_register_misc:
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return ret;
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}
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static void __exit sec_misc_exit(void)
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{
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wake_lock_destroy(&sec_misc_wake_lock);
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}
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module_init(sec_misc_init);
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module_exit(sec_misc_exit);
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/* Module information */
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MODULE_AUTHOR("Samsung");
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MODULE_DESCRIPTION("Samsung PX misc. driver");
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MODULE_LICENSE("GPL");
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