void lcd_enable(bool enable)
{
if(lcd_active() == enable)
return;
lcd_set_active(enable);
if(lcd_active())
{
// enable spi
spi_enable(true);
// reset
imx233_lcdif_reset_lcd(true);
imx233_lcdif_reset_lcd(false);
mdelay(1);
imx233_lcdif_reset_lcd(true);
mdelay(1);
// "power" on
lcd_power(true);
// setup registers
lcd_power_seq();
lcd_init_seq();
lcd_display_on_seq();
imx233_dma_reset_channel(APB_LCDIF);
imx233_dma_start_command(APB_LCDIF, &lcdif_dma[0].dma);
}
else
{
// power down
lcd_display_off_seq();
lcd_power(false);
// stop lcdif
BF_CLR(LCDIF_CTRL, DOTCLK_MODE);
/* stmp37xx errata: clearing DOTCLK_MODE won't clear RUN: wait until
* fifo is empty and then clear manually */
while(!BF_RD(LCDIF_STAT, TXFIFO_EMPTY));
BF_CLR(LCDIF_CTRL, RUN);
// disable spi
spi_enable(false);
}
}
void lcd_enable(bool enable)
{
if(lcd_on == enable)
return;
lcd_on = enable;
if(lcd_on)
{
// enable spi
spi_enable(true);
// reset
imx233_lcdif_reset_lcd(true);
imx233_lcdif_reset_lcd(false);
mdelay(1);
imx233_lcdif_reset_lcd(true);
mdelay(1);
// "power" on
lcd_power(true);
// setup registers
imx233_lcdif_enable_sync_signals(true); // we need frame signals during init
lcd_power_seq();
lcd_init_seq();
lcd_display_on_seq();
imx233_dma_reset_channel(APB_LCDIF);
imx233_dma_start_command(APB_LCDIF, &lcdif_dma[0].dma);
BF_SET(LCDIF_CTRL, DOTCLK_MODE);
BF_SET(LCDIF_CTRL, RUN);
}
else
{
// power down
lcd_display_off_seq();
lcd_power(false);
// stop lcdif
BF_CLR(LCDIF_CTRL, DOTCLK_MODE);
// disable spi
spi_enable(false);
}
}