/* LTV250QV panel functions */
static void lcd_write_reg(unsigned char reg, unsigned short val)
{
unsigned char block[3] = {LTV_OPC_INDEX, 0, reg | 0xFF};
spi_block_transfer(SPI_target_LTV250QV, block, sizeof(block), NULL, 0);
block[0] = LTV_OPC_DATA;
block[1] = val >> 8;
block[2] = val & 0xFF;
spi_block_transfer(SPI_target_LTV250QV, block, sizeof(block), NULL, 0);
}
static void _backlight_write_brightness(int brightness)
{
uint8_t bl_command[] = {0xA4, 0x00, brightness, 0xA4};
spi_block_transfer(SPI_target_BACKLIGHT, commands[8], 2, (char *)&read_brightness, 2);
// bl_command[3] = (char) read_brightness;
spi_block_transfer(SPI_target_BACKLIGHT, bl_command, 4, 0, 0);
}
void tsc2100_writereg(int page, int address, short value)
{
unsigned short command = (page << 11)|(address << 5);
unsigned char out[4] = {command >> 8, command & 0xff,
value >> 8, value & 0xff};
spi_block_transfer(SPI_target_TSC2100, out, sizeof(out), NULL, 0);
}
static void lcd_display_off(void)
{
/* LQV shutdown sequence */
lcd_write_reg(LTV_PWRCTL1, (LTV_VCOMOUT_ENABLE | LTV_DRIVE_CURRENT(5) | LTV_SUPPLY_CURRENT(5)));
sleep_ms(20);
lcd_write_reg(LTV_PWRCTL1, (LTV_DRIVE_CURRENT(5) | LTV_SUPPLY_CURRENT(5)));
lcd_write_reg(LTV_GATECTL2, (LTV_NW_INV_1LINE | LTV_FTI(3) | LTV_FWI(3)));
lcd_write_reg(LTV_PWRCTL2, 0);
sleep_ms(20);
lcd_write_reg(LTV_PWRCTL1, 0);
sleep_ms(10);
unsigned char temp[1];
temp[0] = 0;
spi_block_transfer(SPI_target_LTV250QV, temp, sizeof(temp), NULL, 0);
IO_GIO_BITCLR2 = (1 << 4);
sleep_ms(5);
IO_GIO_BITCLR2 = (1 << 7);
sleep_ms(5);
IO_GIO_BITCLR2 = (1 << 0);
sleep_ms(2);
IO_GIO_BITCLR2 = (1 << 8);
IO_GIO_BITCLR2 = (1 << 5);
/* Disable main power */
IO_GIO_BITCLR2 |= (1 << 3);
enable_venc(false);
lcd_on = false;
}
short tsc2100_readreg(int page, int address)
{
unsigned short command = 0x8000|(page << 11)|(address << 5);
unsigned char out[] = {command >> 8, command & 0xff};
unsigned char in[2];
spi_block_transfer(SPI_target_TSC2100, out, sizeof(out), in, sizeof(in));
return (in[0]<<8)|in[1];
}
void tsc2100_read_data(void)
{
int page = 0, address = 0;
unsigned int i;
unsigned short command = 0x8000|(page << 11)|(address << 5);
unsigned char out[] = {command >> 8, command & 0xff};
unsigned char *p_adc_data=(unsigned char *)&adc_data;
adc_status|=tsc2100_readreg(TSSTAT_PAGE, TSSTAT_ADDRESS);
spi_block_transfer(SPI_target_TSC2100,
out, sizeof(out), (char *)adc_data, sizeof(adc_data));
for(i=0; i<sizeof(adc_data); i+=2)
adc_data[i>>1]=(short)(p_adc_data[i]<<8|p_adc_data[i+1]);
}
bool backlight_hw_init(void)
{
short read_value;
IO_GIO_BITCLR2 = (1 << 5); /* output low (backlight/lcd on) */
spi_block_transfer(SPI_target_BACKLIGHT, commands[6], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[8], 2, (char*)&read_value, 2);
if( (read_value & 0xFF) < 0xD0 )
{
spi_block_transfer(SPI_target_BACKLIGHT, commands[3], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[4], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[9], 2, 0, 0);
spi_block_transfer(SPI_target_BACKLIGHT, commands[0], 2, 0, 0);
}
spi_block_transfer(SPI_target_BACKLIGHT, commands[2], 2, 0, 0);
backlight_hw_brightness(backlight_brightness);
return true;
}
