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atmel mxt1066T2 capacitive touch

Moderators: chensy, FATechsupport

hi
I can not drive atmel mxt1066T2 with NanoPC-T3 borad.
I add following code to device.c file in address arch/arm/plat-s5p6818 but no get responses from touch screen.


first added code:

/* TSP */
static struct mxt_platform_data mxt_platform_data = {
.x_line = 18,
.y_line = 11,
.x_size = 1024,
.y_size = 600,
.blen = 0x1,
.threshold = 0x28,
.voltage = 2800000, /* 2.8V */
.orient = MXT_DIAGONAL_COUNTER,
.irqflags = IRQF_TRIGGER_FALLING,
};

static struct i2c_board_info mxt_devs[] __initdata = {
{
I2C_BOARD_INFO("atmel_mxt_ts", 0x4a),
.platform_data = &mxt_platform_data,
.irq = PB_PIO_IRQ(CFG_IO_TOUCH_IRQ),
//.irq = IRQ_EINT(4),
//.irq = PB_PIO_IRQ(CFG_IO_TOUCH_IRQ),
},
};


#if defined(CONFIG_TOUCHSCREEN_ATMEL_MXT) //add in __init nxp_board_devs_register() function
printk("plat: add touch(MXT) device. by shokri...\n");
//mxt_platform_data.screen_max_x = lcd->width;
//mxt_platform_data.screen_max_y = lcd->height;
i2c_register_board_info(/*GOODIX_I2C_BUS*/2, &mxt_devs[0], 1);
platform_add_devices(MXT_devices, ARRAY_SIZE(MXT_devices));
printk("plat: mxt: irq=%d (%d)\n", PB_PIO_IRQ(CFG_IO_TOUCH_IRQ), CFG_IO_TOUCH_IRQ);
#endif





Second added code:

#if defined(CONFIG_TOUCHSCREEN_ATMEL_MXT)
//#include <linux/platform_data/goodix_touch.h>
#include <linux/i2c/atmel_mxt_ts.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/of_regulator.h>
#include <linux/regulator/machine.h>

//#define GOODIX_I2C_BUS (2)////////////////////

/* TSP */
static struct regulator_consumer_supply tsp_fixed_consumer =
REGULATOR_SUPPLY("vdd", "3-004a");

static struct regulator_init_data tsp_fixed_voltage_init_data = {
.constraints = {
.name = "TSP_2.8V",
},
.num_consumer_supplies = 1,
.consumer_supplies = &tsp_fixed_consumer,
};

static struct fixed_voltage_config tsp_fixed_voltage_config = {
.supply_name = "TSP_VDD",
.microvolts = 2800000,
.gpio = -EINVAL,
.init_data = &tsp_fixed_voltage_init_data,
};

static struct platform_device tsp_fixed_voltage = {
.name = "reg-fixed-voltage",
.id = 3,//FIXED_REG_ID_TSP_2_8V,
.dev = {
.platform_data = &tsp_fixed_voltage_config,
},
};

/* TSP */
static struct mxt_platform_data mxt_platform_data = {
.x_line = 18,
.y_line = 11,
.x_size = 1024,
.y_size = 600,
.blen = 0x1,
.threshold = 0x28,
.voltage = 2800000, /* 2.8V */
.orient = MXT_DIAGONAL_COUNTER,
.irqflags = IRQF_TRIGGER_FALLING,
};

/*static struct s3c2410_platform_i2c i2c3_data __initdata = {
.flags = 0,
.bus_num = 3,
.slave_addr = 0x10,
.frequency = 400 * 1000,
.sda_delay = 100,
};*/

static struct i2c_board_info mxt_devs[] __initdata = {
{
I2C_BOARD_INFO("atmel_mxt_ts", 0x4a),
.platform_data = &mxt_platform_data,
.irq = PB_PIO_IRQ(CFG_IO_TOUCH_IRQ),
//.irq = IRQ_EINT(4),
//.irq = PB_PIO_IRQ(CFG_IO_TOUCH_IRQ),
},
};

static struct platform_device *MXT_devices[] = {
&tsp_fixed_voltage,
};
#endif

#if defined(CONFIG_TOUCHSCREEN_ATMEL_MXT) //add in __init nxp_board_devs_register() function
printk("plat: add touch(MXT) device. by shokri...\n");
//mxt_platform_data.screen_max_x = lcd->width;
//mxt_platform_data.screen_max_y = lcd->height;
i2c_register_board_info(/*GOODIX_I2C_BUS*/2, &mxt_devs[0], 1);
platform_add_devices(MXT_devices, ARRAY_SIZE(MXT_devices));
printk("plat: mxt: irq=%d (%d)\n", PB_PIO_IRQ(CFG_IO_TOUCH_IRQ), CFG_IO_TOUCH_IRQ);
#endif

/*********************************************************/



error massage when connect touch screen to board is "atmel_mxt_ts 2-004a: Failed to get supply 'vdd': -517".
even when not connect touch screen to board, above massage show in terminal.
please help me for drive this touch screen.
thanks.
hi
This problem is like to my matter in linux os.
I want add any else of touchscreen device to my development board on Debian or Ubuntu OS.
Any other Development board with linux OS includes dtb file structure and is clear for my job.
but I cant find dtb structure files in sources of friendlyArm wiki for this board.
S.O.S ... :cry: :cry: :cry:

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