aiot/efDataStatistics/dataSharedMemory/memoryOperation.c

/*
* linux/arch/arm/mach-omap1/board-sx1.c
*
* Modified from board-generic.c
*
* Support for the Siemens SX1 mobile phone.
*
* Original version : Vladimir Ananiev (Vovan888-at-gmail com)
*
* Maintainters : Vladimir Ananiev (aka Vovan888), Sergge
*		oslik.ru
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/gpio.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/input.h>
#include <linux/platform_device.h>
#include <linux/notifier.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/types.h>
#include <linux/i2c.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/omapfb.h>
#include <linux/platform_data/keypad-omap.h>

#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>

#include <mach/flash.h>
#include <mach/mux.h>
#include <linux/omap-dma.h>
#include <mach/irda.h>
#include <mach/tc.h>
#include <mach/board-sx1.h>

#include <mach/hardware.h>
#include <mach/usb.h>

#include "common.h"
#include "dma.h"

/* Write to I2C device */
int sx1_i2c_write_byte(u8 devaddr, u8 regoffset, u8 value)
{
	struct i2c_adapter *adap;
	int err;
	struct i2c_msg msg[1];
	unsigned char data[2];

	adap = i2c_get_adapter(0);
	if (!adap)
		return -ENODEV;
	msg->addr = devaddr;	/* I2C address of chip */
	msg->flags = 0;
	msg->len = 2;
	msg->buf = data;
	data[0] = regoffset;	/* register num */
	data[1] = value;		/* register data */
	err = i2c_transfer(adap, msg, 1);
	i2c_put_adapter(adap);
	if (err >= 0)
		return 0;
	return err;
}

/* Read from I2C device */
int sx1_i2c_read_byte(u8 devaddr, u8 regoffset, u8 *value)
{
	struct i2c_adapter *adap;
	int err;
	struct i2c_msg msg[1];
	unsigned char data[2];

	adap = i2c_get_adapter(0);
	if (!adap)
		return -ENODEV;

	msg->addr = devaddr;	/* I2C address of chip */
	msg->flags = 0;
	msg->len = 1;
	msg->buf = data;
	data[0] = regoffset;	/* register num */
	err = i2c_transfer(adap, msg, 1);

	msg->addr = devaddr;	/* I2C address */
	msg->flags = I2C_M_RD;
	msg->len = 1;
	msg->buf = data;
	err = i2c_transfer(adap, msg, 1);
	*value = data[0];
	i2c_put_adapter(adap);

	if (err >= 0)
		return 0;
	return err;
}
/* set keyboard backlight intensity */
int sx1_setkeylight(u8 keylight)
{
	if (keylight > SOFIA_MAX_LIGHT_VAL)
		keylight = SOFIA_MAX_LIGHT_VAL;
	return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_KEYLIGHT_REG, keylight);
}
/* get current keylight intensity */
int sx1_getkeylight(u8 * keylight)
{
	return sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_KEYLIGHT_REG, keylight);
}
/* set LCD backlight intensity */
int sx1_setbacklight(u8 backlight)
{
	if (backlight > SOFIA_MAX_LIGHT_VAL)
		backlight = SOFIA_MAX_LIGHT_VAL;
	return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_BACKLIGHT_REG,
				  backlight);
}
/* get current LCD backlight intensity */
int sx1_getbacklight (u8 * backlight)
{
	return sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_BACKLIGHT_REG,
				 backlight);
}
/* set LCD backlight power on/off */
int sx1_setmmipower(u8 onoff)
{
	int err;
	u8 dat = 0;
	err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat);
	if (err < 0)
		return err;
	if (onoff)
		dat |= SOFIA_MMILIGHT_POWER;
	else
		dat &= ~SOFIA_MMILIGHT_POWER;
	return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat);
}

/* set USB power on/off */
int sx1_setusbpower(u8 onoff)
{
	int err;
	u8 dat = 0;
	err = sx1_i2c_read_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, &dat);
	if (err < 0)
		return err;
	if (onoff)
		dat |= SOFIA_USB_POWER;
	else
		dat &= ~SOFIA_USB_POWER;
	return sx1_i2c_write_byte(SOFIA_I2C_ADDR, SOFIA_POWER1_REG, dat);
}

EXPORT_SYMBOL(sx1_setkeylight);
EXPORT_SYMBOL(sx1_getkeylight);
EXPORT_SYMBOL(sx1_setbacklight);
EXPORT_SYMBOL(sx1_getbacklight);
EXPORT_SYMBOL(sx1_setmmipower);
EXPORT_SYMBOL(sx1_setusbpower);

/*----------- Keypad -------------------------*/

static const unsigned int sx1_keymap[] = {
	KEY(3, 5, GROUP_0 | 117), /* camera Qt::Key_F17 */
	KEY(4, 0, GROUP_0 | 114), /* voice memo Qt::Key_F14 */
	KEY(4, 1, GROUP_2 | 114), /* voice memo */
	KEY(4, 2, GROUP_3 | 114), /* voice memo */
	KEY(0, 0, GROUP_1 | KEY_F12),	/* red button Qt::Key_Hangup */
	KEY(3, 4, GROUP_1 | KEY_LEFT),
	KEY(3, 2, GROUP_1 | KEY_DOWN),
	KEY(3, 1, GROUP_1 | KEY_RIGHT),
	KEY(3, 0, GROUP_1 | KEY_UP),
	KEY(3, 3, GROUP_1 | KEY_POWER), /* joystick press or Qt::Key_Select */
	KEY(0, 5, GROUP_1 | KEY_1),
	KEY(0, 4, GROUP_1 | KEY_2),
	KEY(0, 3, GROUP_1 | KEY_3),
	KEY(4, 3, GROUP_1 | KEY_4),
	KEY(4, 4, GROUP_1 | KEY_5),