static int ct36x_ts_suspend(struct i2c_client *client, pm_message_t mesg)
{
struct ct36x_ts_info *ts;
ct36x_debug_2("%s: enter\n", __FUNCTION__); /* ct36x_zx */
if (CT36X_TS_DEBUG)
ct36x_debug("ct36x_ts_suspend\n");
ts = (struct ct36x_ts_info *)i2c_get_clientdata(client);
disable_irq_nosync(ts->irq);
#if (CT36X_TS_ESD_TIMER_INTERVAL)
if ( ts->timer_on ) {
// Disable ESD timer
del_timer(&ts->timer);
ts->timer_on = 0;
}
#endif
cancel_work_sync(&ts->event_work); /* ct36x_zx */
#if (CT36X_TS_CHIP_SEL == CT360_CHIP_VER)
// step 01 W FF 0F 2B
ts->data.buf[0] = 0xFF;
ts->data.buf[1] = 0x0F;
ts->data.buf[2] = 0x2B;
ct36x_ts_reg_write(client, client->addr, ts->data.buf, 3, CT36X_TS_I2C_SPEED);
mdelay(3);
// step 01 W 00 00
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x00;
ct36x_ts_reg_write(client, client->addr, ts->data.buf, 2, CT36X_TS_I2C_SPEED);
mdelay(3);
#elif (CT36X_TS_CHIP_SEL == CT36X_CHIP_VER)
// step 01 W FF 8F FF
ts->data.buf[0] = 0xFF;
ts->data.buf[1] = 0x8F;
ts->data.buf[2] = 0xFF;
ct36x_ts_reg_write(client, client->addr, ts->data.buf, 3, CT36X_TS_I2C_SPEED);
mdelay(3);
// step 01 W 00 AF
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0xAF;
ct36x_ts_reg_write(client, client->addr, ts->data.buf, 2, CT36X_TS_I2C_SPEED);
mdelay(3);
#endif
mdelay(600);
return 0;
}
static int ct36x_ts_get_chip(struct i2c_client *client)
{
struct ct36x_ts_info *ts = (struct ct36x_ts_info *)i2c_get_clientdata(client);
// Write read chip id command
ts->data.buf[0] = 0xFF;
ts->data.buf[1] = 0xF0;
ts->data.buf[2] = 0x00;
ct36x_ts_reg_write(client, client->addr, (char *) ts->data.buf, 3, CT36X_TS_I2C_SPEED);
// Reset i2c offsets
ts->data.buf[0] = 0x00;
ct36x_ts_reg_write(client, client->addr, (char *) ts->data.buf, 1, CT36X_TS_I2C_SPEED);
// read chip id
ct36x_ts_reg_read(client, client->addr, (char *) ts->data.buf, 1, CT36X_TS_I2C_SPEED);
return ts->data.buf[0];
}
static int ct36x_ts_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct ct36x_ts_info *ts = NULL;
struct device *dev = &client->dev;
int err = -1;
if (dev == NULL) {
printk(KERN_ERR "%s(): dev not registered!\n", __func__);
goto ERR_HW_INIT;
}
/* Check I2C Functionality */
err = i2c_check_functionality(client->adapter, I2C_FUNC_I2C);
if ( !err ) {
dev_err(dev, "Check I2C Functionality Failed.\n");
goto ERR_I2C_CHK;
}
ts = (struct ct36x_ts_info *)i2c_get_clientdata(client);
if (ts == NULL) {
printk(KERN_ERR "%s(): Not registered at I2C!\n", __func__);
goto ERR_HW_INIT;
}
ts->ready = 0; // Device is not ready
/* Init Hardware */
err = ct36x_ts_hw_init(ts);
if ( err ) {
dev_err(dev, "Platform HW Init Failed.\n");
goto ERR_HW_INIT;
}
/* HW Reset when Firmware request and update. */
ct36x_ts_hw_reset(ts);
#if (CT36X_TS_CHIP_SEL == CT360_CHIP_VER)
// Set I2C scon to 0x0f2f --> read version
ts->data.buf[0] = 0xFF;
ts->data.buf[1] = 0x0F;
ts->data.buf[2] = 0x2A;
#elif (CT36X_TS_CHIP_SEL == CT36X_CHIP_VER)
// Set I2C scon to 0x3fff --> read version
ts->data.buf[0] = 0xFF;
ts->data.buf[1] = 0x3F;
ts->data.buf[2] = 0xFF;
#endif
ct36x_ts_reg_write(client, client->addr, (char *) ts->data.buf, 3, CT36X_TS_I2C_SPEED);
mdelay(10);
ts->data.buf[0] = 0x00;
ct36x_ts_reg_write(client, client->addr, (char *) ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10);
// do read version
ct36x_ts_reg_read(client, client->addr, (char *) ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10);
dev_info(dev, "FW Version read: 0x%x \n", ts->data.buf[0]);
#if defined(CONFIG_CT360_CHIP_UPDATE_SUPPORT)
{
char fw_ver_upd = Binary_Data[CT36X_TS_FW_VER_OFFSET];
dev_info(dev, "FW Version write: 0x%x \n", fw_ver_upd);
if ( fw_ver_upd != ts->data.buf[0] )
{
dev_info(dev, "Running bootloader ... \n");
err = ct36x_ts_bootloader(client);
dev_info(dev, "Bootloader done, %s \n", err ? "Failed" : "OK");
}
}
#else
dev_info(dev, "Bootloader support disabled, trying without...\n");
#endif
// register early suspend
#ifdef CONFIG_HAS_EARLYSUSPEND
#if (CT36X_TS_HAS_EARLYSUSPEND)
ts->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
ts->early_suspend.suspend = ct36x_early_suspend;
ts->early_suspend.resume = ct36x_early_resume;
register_early_suspend(&ts->early_suspend);
#endif
#endif
// allocate input device
ts->input = input_allocate_device();
if ( !ts->input ) {
dev_err(dev, "Unable to allocate input device for device %s.\n", DRIVER_NAME);
err = -ENOMEM;
goto ERR_INPUT_ALLOC;
}
__set_bit(EV_ABS, ts->input->evbit);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0))
__set_bit(INPUT_PROP_DIRECT, ts->input->propbit);
#endif
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 0, 0))
input_mt_init_slots(ts->input, CT36X_TS_POINT_NUM);
#endif
input_set_abs_params(ts->input, ABS_MT_POSITION_X, 0, CT36X_TS_ABS_X_MAX, 0, 0);
input_set_abs_params(ts->input, ABS_MT_POSITION_Y, 0, CT36X_TS_ABS_Y_MAX, 0, 0);
input_set_abs_params(ts->input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
input_set_abs_params(ts->input, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
ts->input->name = DRIVER_NAME;
ts->input->id.bustype = BUS_I2C;
// register input device
err = input_register_device(ts->input);
if ( err ) {
dev_err(dev, "Unable to register input device for device %s.\n", DRIVER_NAME);
goto ERR_INPUT_REGIS;
}
/* ct36x_zx */
ts->ts_workqueue = create_singlethread_workqueue(CT36X_TS_WQ);
if (!ts->ts_workqueue) {
err = -ESRCH;
printk(KERN_ERR "create_workqueue falled!\n");
goto ERR_TS_WQ;
}
// work
INIT_WORK(&ts->event_work, ct36x_ts_workfunc);
// Init irq
ts->irq = gpio_to_irq(CT36X_TS_IRQ_PIN);
//err = request_irq(ts->irq, ct36x_ts_irq, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, DRIVER_NAME, ts);
err = request_irq(ts->irq, ct36x_ts_irq, IRQF_TRIGGER_FALLING, DRIVER_NAME, ts); /* ct36x_zx */
if ( err ) {
dev_err(dev, "Unable to request irq.\n");
goto ERR_IRQ_REQEST;
}
// ESD timer
#if (CT36X_TS_ESD_TIMER_INTERVAL)
setup_timer(&ts->timer, ct36x_ts_timer, ts);
ts->timer.expires = jiffies + HZ * CT36X_TS_ESD_TIMER_INTERVAL;
add_timer(&ts->timer);
ts->timer_on = 1;
dev_info(dev, "ESD timer, %s \n", ts->timer_on ? "On" : "Off");
#endif
/* Add another reset and then state we are ready */
ct36x_ts_hw_reset(ts);
ts->ready = 1; // Device is ready
return 0;
ERR_TS_WQ:
ERR_IRQ_REQEST:
ERR_INPUT_REGIS:
input_free_device(ts->input);
ERR_INPUT_ALLOC:
ERR_I2C_CHK:
#ifdef CONFIG_HAS_EARLYSUSPEND
#if (CT36X_TS_HAS_EARLYSUSPEND)
unregister_early_suspend(&ts->early_suspend);
#endif
#endif
ERR_HW_INIT:
ct36x_ts_hw_exit(ts);
return err;
}
int ct36x_ts_bootloader(struct i2c_client *client)
{
int i = 0, j = 0;
unsigned int ver_chk_cnt = 0;
unsigned int flash_addr = 0;
unsigned char CheckSum[16];
struct ct36x_ts_info *ts = (struct ct36x_ts_info *)i2c_get_clientdata(client);
//------------------------------
// Step1 --> initial BootLoader
// Note. 0x7F -> 0x00 -> 0xA5 ;
// MCU goto idle
//------------------------------
printk("%s() Set mcu to idle \n", __FUNCTION__);
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0xA5;
ct36x_ts_reg_write(client, 0x7F, ts->data.buf, 2, CT36X_TS_I2C_SPEED);
mdelay(10);
//------------------------------
// Reset I2C Offset address
// Note. 0x7F -> 0x00
//------------------------------
printk("%s() Reset i2c offset address \n", __FUNCTION__);
ts->data.buf[0] = 0x00;
ct36x_ts_reg_write(client, 0x7F, ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10);
//------------------------------
// Read I2C Bus status
//------------------------------
printk("%s() Read i2c bus status \n", __FUNCTION__);
ct36x_ts_reg_read(client, 0x7F, ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 1 ms
// if return "AAH" then going next step
if (ts->data.buf[0] != 0xAA)
{
printk("%s() i2c bus status: 0x%x \n", __FUNCTION__, ts->data.buf[0]);
return -1;
}
//------------------------------
printk("%s() Vendor ID check \n", __FUNCTION__);
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x99; // Generate check sum command -->read flash, set addr
ts->data.buf[2] = 0x00; // define a flash address for CT365 to generate check sum
ts->data.buf[3] = 0x44; //
ts->data.buf[4] = 0x08; // Define a data length for CT365 to generate check sum
// Write Genertate check sum command to CT36x
ct36x_ts_reg_write(client, 0x7F, ts->data.buf, 5, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 10 ms
ct36x_ts_reg_read(client, 0x7F, ts->data.buf, 13, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 10 ms
// Read check sum and flash data from CT36x
if ( (ts->data.buf[5] != 'V') || (ts->data.buf[9] != 'T') )
ver_chk_cnt++;
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x99; // Generate check sum command -->read flash,set addr
ts->data.buf[2] = 0x00; // define a flash address for CT365 to generate check sum
ts->data.buf[3] = 0xA4; //
ts->data.buf[4] = 0x08; // Define a data length for CT365 to generate check sum
// Write Genertate check sum command to CT365
ct36x_ts_reg_write(client, 0x7F, ts->data.buf, 5, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 10 ms
ct36x_ts_reg_read(client, 0x7F, ts->data.buf, 13, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 10 ms
if ((ts->data.buf[5] != 'V') || (ts->data.buf[9] != 'T'))
ver_chk_cnt++;
if ( ver_chk_cnt >= 2 ) {
printk("%s() Invalid Vendor ID \n", __FUNCTION__);
return -1;
}
//-----------------------------------------------------
// Step 2 : Erase 32K flash memory via Mass Erase (33H)
// 0x7F --> 0x00 --> 0x33 --> 0x00;
//-----------------------------------------------------
printk("%s() Erase flash \n", __FUNCTION__);
for(i = 0; i < 100; i++ ) {
ts->data.buf[0] = 0x00; // Offset address
ts->data.buf[1] = 0x33; // Mass Erase command
ts->data.buf[2] = 0x00;
ct36x_ts_reg_write(client, 0x7F, ts->data.buf, 3, CT36X_TS_I2C_SPEED);
mdelay(10 + i); // Delay 10 mS
//------------------------------
// Reset I2C Offset address
// Note. 0x7F -> 0x00
//------------------------------
ts->data.buf[0] = 0x00;
ct36x_ts_reg_write(client, 0x7F, ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10 + i); // Delay 10 mS
//------------------------------
// Read I2C Bus status
//------------------------------
ct36x_ts_reg_read(client, 0x7F, ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 1 ms
// if return "AAH" then going next step
if( ts->data.buf[0] == 0xAA )
break;
}
if ( i >= 100 )
return -1;
//----------------------------------------
// Step3. Host write 128 bytes to CT36x
// Step4. Host read checksum to verify ;
// Write/Read for 256 times ( 32k Bytes )
//----------------------------------------
printk("%s() flash FW \n", __FUNCTION__);
for ( j = 0; j < 256; j++ ) { // 32k/128 = 256 times
flash_addr = 128 * j; // 0 ~ 127; 128 ~ 255;
for ( i = 0; i < 16; i++ ) { // 128/8 = 16 times for One Row program
// Step 3 : write binary data to CT36x
ts->data.buf[0] = 0x00; // Offset address
ts->data.buf[1] = 0x55; // Flash write command
ts->data.buf[2] = (char)(flash_addr >> 8); // Flash address [15:8]
ts->data.buf[3] = (char)(flash_addr & 0xFF); // Flash address [7:0]
ts->data.buf[4] = 0x08; // Data Length
ts->data.buf[6] = Binary_Data[flash_addr + 0]; // Binary data 1
ts->data.buf[7] = Binary_Data[flash_addr + 1]; // Binary data 2
ts->data.buf[8] = Binary_Data[flash_addr + 2]; // Binary data 3
ts->data.buf[9] = Binary_Data[flash_addr + 3]; // Binary data 4
ts->data.buf[10] = Binary_Data[flash_addr + 4]; // Binary data 5
ts->data.buf[11] = Binary_Data[flash_addr + 5]; // Binary data 6
ts->data.buf[12] = Binary_Data[flash_addr + 6]; // Binary data 7
ts->data.buf[13] = Binary_Data[flash_addr + 7]; // Binary data 8
// Calculate a check sum by Host controller.
// Checksum = / (FLASH_ADRH+FLASH_ADRL+LENGTH+
// Binary_Data1+Binary_Data2+Binary_Data3+Binary_Data4+
// Binary_Data5+Binary_Data6+Binary_Data7+Binary_Data8) + 1
CheckSum[i] = ~(ts->data.buf[2] + ts->data.buf[3] + ts->data.buf[4] + ts->data.buf[6] + ts->data.buf[7] +
ts->data.buf[8] + ts->data.buf[9] + ts->data.buf[10] + ts->data.buf[11] + ts->data.buf[12] +
ts->data.buf[13]) + 1;
ts->data.buf[5] = CheckSum[i]; // Load check sum to I2C Buffer
ct36x_ts_reg_write(client, 0x7F, ts->data.buf, 14, CT36X_TS_I2C_SPEED); // Host write I2C_Buf[0?K12] to CT365.
mdelay(1); // 8 Bytes program --> Need 1 ms delay time
flash_addr += 8; // Increase Flash Address. 8 bytes for 1 time
}
mdelay(20); // Each Row command --> Need 20 ms delay time
flash_addr = 128 * j; // 0 ~ 127 ; 128 ~ 255 ;
// Step4. Verify process
printk("%s() Verify FW \n", __FUNCTION__);
for ( i = 0; i < 16; i++ ) { // 128/8 = 16 times for One Row program
//Step 4 : Force CT365 generate check sum for host to compare data.
//Prepare get check sum from CT36x
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x99; // Generate check sum command
ts->data.buf[2] = (char)(flash_addr >> 8); // define a flash address for NT1100x to generate check sum
ts->data.buf[3] = (char)(flash_addr & 0xFF); //
ts->data.buf[4] = 0x08; // Define a data length for CT36x to generate check sum
ct36x_ts_reg_write(client, 0x7F, ts->data.buf, 5, CT36X_TS_I2C_SPEED); // Write Genertate check sum command to CT365
mdelay(1); // Delay 1 ms
ct36x_ts_reg_read(client, 0x7F, ts->data.buf, 13, CT36X_TS_I2C_SPEED); // Read check sum and flash data from CT365
// Compare host check sum with CT365 check sum(I2C_Buf[4])
if ( ts->data.buf[4] != CheckSum[i] ) {
return -1;
}
flash_addr += 8; // Increase Flash Address.
}
}
return 0;
}
int CT360_CTP_BootLoader(struct ct360_ts_data *ts)
{
int i = 0, j = 0;
unsigned int ver_chk_cnt = 0;
unsigned int flash_addr = 0;
unsigned char CheckSum[16];
//------------------------------
// Step1 --> initial BootLoader
// Note. 0x7F -> 0x00 -> 0xA5 ;
// MCU goto idle
//------------------------------
printk("%s() Set mcu to idle \n", __FUNCTION__);
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0xA5;
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 2, CT36X_TS_I2C_SPEED);
mdelay(10);
//------------------------------
// Reset I2C Offset address
// Note. 0x7F -> 0x00
//------------------------------
printk(&"%s() Reset i2c offset address \n", __FUNCTION__);
ts->data.buf[0] = 0x00;
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10);
//------------------------------
// Read I2C Bus status
//------------------------------
printk("%s() Read i2c bus status \n", __FUNCTION__);
ct36x_ts_reg_read(ts->client, 0x7F, ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 1 ms
// if return "AAH" then going next step
if (ts->data.buf[0] != 0xAA)
{
printk("%s() i2c bus status: 0x%x \n", __FUNCTION__, ts->data.buf[0]);
return -1;
}
//------------------------------
// Check incomplete flash erase
//------------------------------
printk("%s() Flash erase verify \n", __FUNCTION__);
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x99; // Generate check sum command -->read flash, set addr
ts->data.buf[2] = 0x00; // define a flash address for CT36x to generate check sum
ts->data.buf[3] = 0x00; //
ts->data.buf[4] = 0x08; // Define a data length for CT36x to generate check sum
// Write Genertate check sum command to CT36x
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 5, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 10 ms
ct36x_ts_reg_read(ts->client, 0x7F, ts->data.buf, 13, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 10 ms
CheckSum[0] = ts->data.buf[5];
CheckSum[1] = ts->data.buf[6];
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x99; // Generate check sum command -->read flash, set addr
ts->data.buf[2] = 0x3F; // define a flash address for CT36x to generate check sum
ts->data.buf[3] = 0xE0; //
ts->data.buf[4] = 0x08; // Define a data length for CT36x to generate check sum
// Write Genertate check sum command to CT36x
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 5, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 10 ms
ct36x_ts_reg_read(ts->client, 0x7F, ts->data.buf, 13, CT36X_TS_I2C_SPEED);
mdelay(10);
CheckSum[2] = ts->data.buf[5];
CheckSum[3] = ts->data.buf[6];
if ( (CheckSum[0] ^ CheckSum[2]) == 0xFF && (CheckSum[1] ^ CheckSum[3]) == 0xFF )
goto FLASH_ERASE;
//------------------------------
// check valid Vendor ID
//------------------------------
printk("%s() Vendor ID Check \n", __FUNCTION__);
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x99; // Generate check sum command -->read flash, set addr
ts->data.buf[2] = 0x00; // define a flash address for CT365 to generate check sum
ts->data.buf[3] = 0x44; //
ts->data.buf[4] = 0x08; // Define a data length for CT365 to generate check sum
// Write Genertate check sum command to CT36x
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 5, CT36X_TS_I2C_SPEED);
mdelay(30); // Delay 10 ms
ct36x_ts_reg_read(ts->client, 0x7F, ts->data.buf, 13, CT36X_TS_I2C_SPEED);
mdelay(30); // Delay 10 ms
// Read check sum and flash data from CT36x
if ( (ts->data.buf[5] != 'V') || (ts->data.buf[9] != 'T') )
ver_chk_cnt++;
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x99; // Generate check sum command -->read flash,set addr
ts->data.buf[2] = 0x00; // define a flash address for CT365 to generate check sum
ts->data.buf[3] = 0xA4; //
ts->data.buf[4] = 0x08; // Define a data length for CT365 to generate check sum
// Write Genertate check sum command to CT365
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 5, CT36X_TS_I2C_SPEED);
mdelay(30); // Delay 10 ms
ct36x_ts_reg_read(ts->client, 0x7F, ts->data.buf, 13, CT36X_TS_I2C_SPEED);
mdelay(30); // Delay 10 ms
if ((ts->data.buf[5] != 'V') || (ts->data.buf[9] != 'T'))
ver_chk_cnt++;
if ( ver_chk_cnt >= 2 ) {
printk("%s() Invalid FW Version \n", __FUNCTION__);
// return -1;
}
FLASH_ERASE:
//-----------------------------------------------------
// Step 2 : Erase 32K flash memory via Mass Erase (33H)
// 0x7F --> 0x00 --> 0x33 --> 0x00;
//-----------------------------------------------------
printk("%s() Erase flash \n", __FUNCTION__);
for(i = 0; i < 8; i++ ) {
ts->data.buf[0] = 0x00; // Offset address
ts->data.buf[1] = 0x33; // Mass Erase command
ts->data.buf[2] = 0x00 + (i * 8);
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 3, CT36X_TS_I2C_SPEED);
mdelay(120); // Delay 10 mS
//------------------------------
// Reset I2C Offset address
// Note. 0x7F -> 0x00
//------------------------------
ts->data.buf[0] = 0x00;
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(120); // Delay 10 mS
//------------------------------
// Read I2C Bus status
//------------------------------
ct36x_ts_reg_read(ts->client, 0x7F, ts->data.buf, 1, CT36X_TS_I2C_SPEED);
mdelay(10); // Delay 1 ms
// if return "AAH" then going next step
if( ts->data.buf[0] != 0xAA )
return -1;
}
//----------------------------------------
// Step3. Host write 128 bytes to CT36x
// Step4. Host read checksum to verify ;
// Write/Read for 256 times ( 32k Bytes )
//----------------------------------------
printk("%s() flash FW \n", __FUNCTION__);
for ( flash_addr = 0; flash_addr < 0x3FFF; flash_addr+=8 ) {
// Step 3 : write binary data to CT36x
ts->data.buf[0] = 0x00; // Offset address
ts->data.buf[1] = 0x55; // Flash write command
ts->data.buf[2] = (char)(flash_addr >> 8); // Flash address [15:8]
ts->data.buf[3] = (char)(flash_addr & 0xFF); // Flash address [7:0]
ts->data.buf[4] = 0x08; // Data Length
if( flash_addr == 160 || flash_addr == 168 ) {
ts->data.buf[6] = ~Binary_Data[flash_addr + 0]; // Binary data 1
ts->data.buf[7] = ~Binary_Data[flash_addr + 1]; // Binary data 2
ts->data.buf[8] = ~Binary_Data[flash_addr + 2]; // Binary data 3
ts->data.buf[9] = ~Binary_Data[flash_addr + 3]; // Binary data 4
ts->data.buf[10] = ~Binary_Data[flash_addr + 4]; // Binary data 5
ts->data.buf[11] = ~Binary_Data[flash_addr + 5]; // Binary data 6
ts->data.buf[12] = ~Binary_Data[flash_addr + 6]; // Binary data 7
ts->data.buf[13] = ~Binary_Data[flash_addr + 7]; // Binary data 8
} else {
ts->data.buf[6] = Binary_Data[flash_addr + 0]; // Binary data 1
ts->data.buf[7] = Binary_Data[flash_addr + 1]; // Binary data 2
ts->data.buf[8] = Binary_Data[flash_addr + 2]; // Binary data 3
ts->data.buf[9] = Binary_Data[flash_addr + 3]; // Binary data 4
ts->data.buf[10] = Binary_Data[flash_addr + 4]; // Binary data 5
ts->data.buf[11] = Binary_Data[flash_addr + 5]; // Binary data 6
ts->data.buf[12] = Binary_Data[flash_addr + 6]; // Binary data 7
ts->data.buf[13] = Binary_Data[flash_addr + 7]; // Binary data 8
}
// Calculate a check sum by Host controller.
// Checksum = / (FLASH_ADRH+FLASH_ADRL+LENGTH+
// Binary_Data1+Binary_Data2+Binary_Data3+Binary_Data4+
// Binary_Data5+Binary_Data6+Binary_Data7+Binary_Data8) + 1
CheckSum[0] = ~(ts->data.buf[2] + ts->data.buf[3] + ts->data.buf[4] + ts->data.buf[6] + ts->data.buf[7] +
ts->data.buf[8] + ts->data.buf[9] + ts->data.buf[10] + ts->data.buf[11] + ts->data.buf[12] +
ts->data.buf[13]) + 1;
ts->data.buf[5] = CheckSum[0]; // Load check sum to I2C Buffer
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 14, CT36X_TS_I2C_SPEED); // Host write I2C_Buf[0?K12] to CT365.
mdelay(10); // 8 Bytes program --> Need 1 ms delay time
// Step4. Verify process
//printk("%s(flash_addr:0x%04x) Verify FW \n", __FUNCTION__, flash_addr);
//Step 4 : Force CT365 generate check sum for host to compare data.
//Prepare get check sum from CT36x
ts->data.buf[0] = 0x00;
ts->data.buf[1] = 0x99; // Generate check sum command
ts->data.buf[2] = (char)(flash_addr >> 8); // define a flash address for NT1100x to generate check sum
ts->data.buf[3] = (char)(flash_addr & 0xFF); //
ts->data.buf[4] = 0x08; // Define a data length for CT36x to generate check sum
ct36x_ts_reg_write(ts->client, 0x7F, ts->data.buf, 5, CT36X_TS_I2C_SPEED); // Write Genertate check sum command to CT365
mdelay(10); // Delay 1 ms
ct36x_ts_reg_read(ts->client, 0x7F, ts->data.buf, 13, CT36X_TS_I2C_SPEED); // Read check sum and flash data from CT365
// Compare host check sum with CT365 check sum(I2C_Buf[4])
if ( ts->data.buf[4] != CheckSum[0] ) {
return -1;
}
}
return 0;
}
