/**
* @ingroup SPI-LCD
*
* @param device_info
*/
void bw_spi_lcd_cls(const device_info_t *device_info) {
char cmd[] = { (char) 0x00, (char) BW_PORT_WRITE_CLEAR_SCREEN, (char) ' ' };
cmd[0] = (char) device_info->slave_address;
lcd_spi_setup(device_info);
FUNC_PREFIX(spi_writenb(cmd, sizeof(cmd) / sizeof(cmd[0])));
udelay(BW_LCD_SPI_BYTE_WAIT_US);
}
/**
* @ingroup SPI-LCD
*
* @param device_info
* @param line
* @param pos
*/
void bw_spi_lcd_set_cursor(const device_info_t *device_info, const uint8_t line, const uint8_t pos) {
char cmd[] = { (char) 0x00, (char) BW_PORT_WRITE_MOVE_CURSOR, (char) 0x00 };
cmd[0] = (char) device_info->slave_address;
cmd[2] = (char) (((line & 0x03) << 5) | (pos & 0x1f));
lcd_spi_setup(device_info);
FUNC_PREFIX(spi_writenb(cmd, sizeof(cmd) / sizeof(cmd[0])));
udelay(BW_LCD_SPI_BYTE_WAIT_US);
}
/**
* @ingroup SPI-LCD
*
* @param device_info
* @param value
*/
void bw_spi_lcd_get_contrast(const device_info_t *device_info, uint8_t *value) {
char cmd[] = { (char) 0x00, (char) BW_PORT_READ_CURRENT_CONTRAST, (char) 0x00 };
cmd[0] = (char) (device_info->slave_address | 1);
lcd_spi_setup(device_info);
FUNC_PREFIX(spi_transfern(cmd, sizeof(cmd) / sizeof(char)));
udelay(BW_LCD_SPI_BYTE_WAIT_US);
*value = (uint8_t)cmd[2];
}
/**
* @ingroup SPI-LCD
*
* @param device_info
* @param value
*/
void bw_spi_lcd_set_backlight(const device_info_t *device_info, const uint8_t value) {
char cmd[] = { (char) 0x00, (char) BW_PORT_WRITE_SET_BACKLIGHT, (char) 0x00 };
cmd[0] = (char) device_info->slave_address;
cmd[2] = (char) value;
lcd_spi_setup(device_info);
FUNC_PREFIX(spi_writenb(cmd, sizeof(cmd) / sizeof(cmd[0])));
udelay(BW_LCD_SPI_BYTE_WAIT_US);
}
/**
* @ingroup SPI-LCD
*
* @param device_info
* @param text
* @param length
*/
void bw_spi_lcd_text(const device_info_t *device_info, const char *text, uint8_t length) {
char data[BW_LCD_MAX_CHARACTERS + 2];
uint8_t i;
data[0] = (char) device_info->slave_address;
data[1] = (char) BW_PORT_WRITE_DISPLAY_DATA;
if (length > BW_LCD_MAX_CHARACTERS)
length = BW_LCD_MAX_CHARACTERS;
for (i = 0; i < length; i++)
data[i + 2] = text[i];
lcd_spi_setup(device_info);
FUNC_PREFIX(spi_writenb(data, length + 2));
udelay(BW_LCD_SPI_BYTE_WAIT_US);
}
/*!
* This function is called whenever the SPI slave device is detected.
*
* @param spi the SPI slave device
*
* @return Returns 0 on SUCCESS and error on FAILURE.
*/
static int __devinit lcd_spi_probe(struct spi_device *spi)
{
int i;
struct mxc_lcd_platform_data *plat = spi->dev.platform_data;
lcd_spi = spi;
lcd_24bpp_ioinit();
if (plat) {
io_reg = regulator_get(&spi->dev, plat->io_reg);
if (!IS_ERR(io_reg)) {
regulator_set_voltage(io_reg, 1800000);
regulator_enable(io_reg);
}
core_reg = regulator_get(&spi->dev, plat->core_reg);
if (!IS_ERR(core_reg)) {
regulator_set_voltage(core_reg, 2800000);
regulator_enable(core_reg);
}
lcd_reset = plat->reset;
if (lcd_reset)
lcd_reset();
}
lcd_spi_setup(lcd_spi);
for (i = 0; i < num_registered_fb; i++) {
if (strcmp(registered_fb[i]->fix.id, "DISP3 BG") == 0) {
lcd_init_fb(registered_fb[i]);
fb_show_logo(registered_fb[i], 0);
lcd_poweron();
}
}
fb_register_client(&nb);
return 0;
}
