static void gpio_init(void)
{
/* board led pins */
__gpio_as_output(0);
__gpio_as_output(1);
__gpio_as_output(2);
__gpio_as_output(3);
__gpio_as_emc();
__gpio_as_uart0();
__gpio_as_uart1();
__gpio_as_uart2();
__gpio_as_uart3();
__gpio_as_scc();
__gpio_as_lcd_master();
__gpio_as_usb();
__gpio_as_eth();
__gpio_as_pwm();
__gpio_as_ps2();
__gpio_as_uprt();
__gpio_as_output(9); /* Mem R/B */
__gpio_as_output(10); /* M/CPU Select */
__gpio_as_output(13); /* LCDM Backlight */
__gpio_as_output(14); /* C/D Pin of LCDM */
__gpio_as_output(88); /* Beeper */
__gpio_as_output(89); /* Cash Box */
// __gpio_as_output(90); /* Modem Enable */
// __gpio_as_output(91); /* INTA_N, external RTC irq */
__harb_usb0_uhc(); /* USB port 0 as host */
// __harb_usb0_udc(); /* USB port 0 as device */
}
bool _backlight_init(void)
{
__gpio_as_pwm(BACKLIGHT_PWM);
__tcu_start_timer_clock(BACKLIGHT_PWM);
__tcu_stop_counter(BACKLIGHT_PWM);
__tcu_init_pwm_output_low(BACKLIGHT_PWM);
__tcu_set_pwm_output_shutdown_graceful(BACKLIGHT_PWM);
__tcu_disable_pwm_output(BACKLIGHT_PWM);
__tcu_select_extalclk(BACKLIGHT_PWM); /* 12 MHz */
__tcu_select_clk_div64(BACKLIGHT_PWM); /* 187.5 kHz */
__tcu_mask_half_match_irq(BACKLIGHT_PWM);
__tcu_mask_full_match_irq(BACKLIGHT_PWM);
__tcu_set_count(BACKLIGHT_PWM, 0);
__tcu_set_half_data(BACKLIGHT_PWM, 0);
__tcu_set_full_data(BACKLIGHT_PWM, 256);
return true;
}