tpanel.c

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/********************** BEGIN LICENSE BLOCK ************************************
 *
 * JZ4740  mobile_tv  Project  V1.0.0
 * INGENIC CONFIDENTIAL--NOT FOR DISTRIBUTION IN SOURCE CODE FORM
 * Copyright (c) Ingenic Semiconductor Co. Ltd 2005. All rights reserved.
 * 
 * This file, and the files included with this file, is distributed and made 
 * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 
 * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES, 
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS 
 * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * 
 * http://www.ingenic.cn 
 *
 ********************** END LICENSE BLOCK **************************************
 *
 *  Author:  <[e-mail]>  <[e-mail]> 
 *
 *  Create:   2008-06-26, by zyliuiu
 *            
 *  Maintain: 
 *            
 *
 *******************************************************************************
 */

#include <bsp.h>
#include <jz4740.h>
#include <ucos_ii.h>
#include <function.h>

//#include <i2c.c>
//#include <key.h>

#define TP_KEY_RST	(32*3+3)
#define TP_KEY_TINT	(32*3+2)
#define TP_KEY_SCL	(32*3+1)
#define TP_KEY_SDA	(32*3+0)
#define TP_TINT_IRQ       (IRQ_GPIO_0 + TP_KEY_TINT)

#define ETIMEDOUT	1
#define ENODEV		2

#define ADDR_WARM_RESET		0xFF
#define ATA2508_SENSOR_MASK 	0x1F

const unsigned char init_data_burst[] = {//Address:0x0D-0x3E
	0x04, // BETA 
	0x27, // AIC_WAIT 
	//0x32, // REF_DELAY
	0x16, // REF_DELAY
	0x02, // HYSTERESIS01 
	0x02, // HYSTERESIS1
	0x02, // HYSTERESIS2
	0x02, // HYSTERESIS3 
	0x02, // HYSTERESIS4 
	0x02, // HYSTERESIS51
	0x02, // HYSTERESIS61 
	0x02, // HYSTERESIS7 
	0x02, // HYSTERESIS8 
	0x02, // HYSTERESIS9 
	0x02, // HYSTERESIS10 
	0x02, // HYSTERESIS11 
	0x64, // STRENGTH_THRESHOLD0
	0x64, // STRENGTH_THRESHOLD1
	0x64, // STRENGTH_THRESHOLD2
	0x64, // STRENGTH_THRESHOLD3
	0x64, // STRENGTH_THRESHOLD4
	0x64, // STRENGTH_THRESHOLD5
	0x64, // STRENGTH_THRESHOLD6
	0x64, // STRENGTH_THRESHOLD7
	0x64, // STRENGTH_THRESHOLD8
	0x64, // STRENGTH_THRESHOLD9
	0x64, // STRENGTH_THRESHOLD10
	0x64, // STRENGTH_THRESHOLD11
	0x0f, // Sampling Interval
	0xC8, // INTEGRATION TIME
	0x0f, // IDLE TIME
	0x00, // SIF_SETUP(RESERVED)
	0x01, // MODE 
	0x00, // GPIO_REG_L 
	0x00, // GPIO_REG_H 
	0x00, // GPIO_CONFIGURATION_L
	0x00, // GPIO_CONFIGURATION_H
	0x00, // GPIO_DIR_L 
	0x00, // GPIO_DIR_H 
	0x0c, // CONTROL 
	0x38, // INT_MASK 
	0x00, // INT_CLEAR 
	0xFF, // INT_edge 
	0x02, // CONTROL_2 
	0xAF, // BEEP_TIME 
	0x7F, // BEEP_FREQUENCY 
	0x30, // CALIBRATION INTERVAL 
	0x00, // EINT_ENABLE 
	0x00, // EINT_POL 
	0x00, // FILTER_PERIOD 
	0x00, // FILTER_THRESHOLD 
};
const unsigned char init_data_alpha[] = {//Address:0x00-0x0C
	0x02, // APIS 
	0x07, // ALPHA0 
	0x06, // ALPHA1 
	0x08, // ALPHA2 
	0x08, // ALPHA3 
	0x08, // ALPHA4 
	0x28, // ALPHA5 
	0x28, // ALPHA6 
	0x28, // ALPHA7
	0x28, // ALPHA8 
	0x28, // ALPHA9 
	0x28, // ALPHA10 
	0x28, // ALPHA11 
};
static unsigned int i2c_addr = 0x58;
static unsigned int i2c_clk = 100000;

#if 0
extern int i2c_read(unsigned char device, unsigned char *buf,
		    unsigned char offset, int count);

extern int i2c_write(unsigned char device, unsigned char *buf,
	      unsigned char offset, int count);
#endif

#if 0
void write_reg(unsigned char reg, unsigned char val)
{ 
  if(-ENODEV == i2c_write(i2c_addr, &val, reg, 1)) {
//    printf("No camera!\n");
    OSTaskDel(OS_PRIO_SELF);
  }
}

unsigned char read_reg(unsigned char reg)
{
  unsigned char buf;
  i2c_read(i2c_addr, &buf, reg, 1);
  return buf;
}

#endif
#if 1
static void write_reg(u8 reg, u8 val)
{
	int ret;
//	i2c_open();
//	i2c_setclk(i2c_clk);
	ret = i2c_write(i2c_addr, &val, reg, 1);
//	i2c_close();
//	printf("the return value of write reg 0x%02x is %d\n", reg, ret);		
}

static u8 read_reg(u8 reg)
{
	u8 val;

//	i2c_open();
//	i2c_setclk(i2c_clk);
	i2c_read(i2c_addr, &val, reg, 1);
//	i2c_close();
	return val;
}
#endif
static void tp_tint_irq(unsigned int irq)
{
	int key_num = 0, value0, value1;
	
	__gpio_ack_irq(TP_KEY_TINT);
	value0 = read_reg(0x75);
	value1 = read_reg(0x76);
	value0 &= ATA2508_SENSOR_MASK;
//	printf("\nthe value of reg 0x75 is 0x%02x\n", value0);
	if (value0 == 0) {
		printf("\nRelease key!\n");
		return;
	}
	while(value0 >> 1){
		value0 >>= 1;
		key_num++;
	}
	
	printf("\nPress key %d!\n", key_num);
}

void tpanel_init()
{
	int i;
	unsigned char data1;
	int retval;

	/* Disable INT that connected to ATA2508's TINT.*/
	__gpio_as_i2c();
	__gpio_as_output(TP_KEY_RST);
	__gpio_set_pin(TP_KEY_RST);
	mdelay(100);
	__gpio_clear_pin(TP_KEY_RST);
	mdelay(800);
	__gpio_set_pin(TP_KEY_RST);
	
	__gpio_mask_irq(TP_KEY_TINT);

	/* usage : I2C_WRITE( register_address, data);*/
	for(i=0; i<13; i++)
	{
		data1 = init_data_alpha[i];
		write_reg(i, data1);
	}
	
	for(i=13; i<63; i++)
	{
		data1 = init_data_burst[i-13];
		write_reg(i, data1);
	}
#if 0
	for (i = 0; i < 63; i++)
	{
		data1 = read_reg(i);
		printf("REG0x%02x = 0x%02x\n", i, data1);
	}
#endif
	
	/*wait for 1 ms*/
	mdelay(1);
#if 0
	while(1)
	{
		data1 = read_reg(0x68);
		printf("REG0x68 = %d\n", data1);
		data1 = read_reg(0x75);
		printf("REG0x75 = 0x%02x\n", data1);
		data1 = read_reg(0x76);
		printf("REG0x76 = 0x%02x\n", data1);
		mdelay(2000);
	}
#endif
	/*to activate all the new settings, give a WARM RESET.*/
	write_reg(ADDR_WARM_RESET, 0x00);	//ADDR_WARM_RESET=0xFF
//	printf("the return value of write reg 0xff is %d\n", ret);
#if 0
	data1 = read_reg(0x68);
	printf("REG0x68 = %d\n", data1);
#endif
	/*wait for 1 ~ 10 ms.*/
	mdelay(10);
	/*Enable INT that connected to ATA2508's TINT.*/
	__gpio_as_irq_rise_edge(TP_KEY_TINT);

	request_irq(TP_TINT_IRQ, tp_tint_irq, 0);

	printf("Lyra touch panel register!\n");
//	return;
//	return 0;
}

/*
static void __exit exit_ata2508(void)
{
	free_irq(TP_TINT_IRQ, NULL);	
}*/