static void lcd_power_ctrl(Bool_t status)
{
mutex_lock(&lcd_power_mutex);
printk(KERN_INFO "%s() Power %s\n", __FUNCTION__, (status ? "ON" : "OFF"));
if (status) {
//GPIOA27 -> LCD_PWR_EN#: 0 lcd 3.3v
gpio_out(PAD_GPIOA_27, 1);
lcd_mdelay(20);
gpio_out(PAD_GPIOD_8, 1);
//GPIOC2 -> VCCx3_EN: 0
gpio_out(PAD_GPIOC_2, 1);
#ifdef CONFIG_AW_AXP
axp_gpio_set_io(3,1);
axp_gpio_set_value(3, 0);
#endif
lcd_mdelay(20);
lcd_signals_ports_ctrl(ON);
lcd_mdelay(10);
gpio_out(PAD_GPIOD_6, 1);
lcd_mdelay(200);
data_status = status;
}
else {
data_status = status;
lcd_mdelay(30);
gpio_out(PAD_GPIOD_6, 0);
lcd_signals_ports_ctrl(OFF);
lcd_mdelay(20);
//GPIOC2 -> VCCx3_EN: 1
gpio_out(PAD_GPIOC_2, 0);
#ifdef CONFIG_AW_AXP
axp_gpio_set_io(3,0);
#endif
lcd_mdelay(20);
gpio_out(PAD_GPIOD_8, 0);
//GPIOA27 -> LCD_PWR_EN#: 1 lcd 3.3v
gpio_out(PAD_GPIOA_27, 0);
lcd_mdelay(100); //power down sequence, needed
}
printk(KERN_INFO "%s() Power %s finished\n", __FUNCTION__, (status ? "ON" : "OFF"));
mutex_unlock(&lcd_power_mutex);
}
static inline void _power_on_backlight(void)
{
mutex_lock(&bl_power_mutex);
if (bl_real_status) {
mutex_unlock(&bl_power_mutex);
return;
}
aml_set_reg32_bits(P_LED_PWM_REG0, 1, 12, 2);
lcd_mdelay(20);
#if (BL_CTL==BL_CTL_GPIO)
//BL_EN -> GPIOD_1: 1
gpio_out(PAD_GPIOD_1, 1);
#elif (BL_CTL==BL_CTL_PWM)
gpio_out(PAD_GPIOC_8, 1);
aml_set_reg32_bits(P_PWM_MISC_REG_CD, PWM_PRE_DIV, 16, 7);
aml_set_reg32_bits(P_PWM_MISC_REG_CD, 1, 23, 1);
aml_set_reg32_bits(P_PWM_MISC_REG_CD, 1, 1, 1); //enable pwm_d
aml_write_reg32(P_PERIPHS_PIN_MUX_2, aml_read_reg32(P_PERIPHS_PIN_MUX_2) | (1<<3)); //enable pwm pinmux
#endif
bl_real_status = 1;
mutex_unlock(&bl_power_mutex);
}
static void backlight_power_ctrl(Bool_t status)
{
mutex_lock(&bl_power_mutex);
PRINT_INFO("%s(): bl_status=%s, data_status=%s, bl_level=%u\n", __FUNCTION__, (bl_status ? "ON" : "OFF"), (data_status ? "ON" : "OFF"), bl_level);
if( status == ON ){
if ((bl_status == ON) || (data_status == OFF) || (bl_level == 0)) {
mutex_unlock(&bl_power_mutex);
return;
}
aml_set_reg32_bits(P_LED_PWM_REG0, 1, 12, 2);
lcd_mdelay(20);
#if (BL_CTL==BL_CTL_GPIO)
//BL_EN -> GPIOD_1: 1
gpio_out(PAD_GPIOD_1, 1);
#elif (BL_CTL==BL_CTL_PWM)
aml_set_reg32_bits(P_PWM_MISC_REG_CD, PWM_PRE_DIV, 16, 7);
aml_set_reg32_bits(P_PWM_MISC_REG_CD, 1, 23, 1);
aml_set_reg32_bits(P_PWM_MISC_REG_CD, 1, 1, 1); //enable pwm_d
aml_write_reg32(P_PERIPHS_PIN_MUX_2, aml_read_reg32(P_PERIPHS_PIN_MUX_2) | (1<<3)); //enable pwm pinmux
#endif
}
else{
if (bl_status == OFF) {
mutex_unlock(&bl_power_mutex);
return;
}
#if (BL_CTL==BL_CTL_GPIO)
gpio_out(PAD_GPIOD_1, 0);
#elif (BL_CTL==BL_CTL_PWM)
aml_set_reg32_bits(P_PWM_MISC_REG_CD, 0, 1, 1); //disable pwm_d
#endif
}
bl_status = status;
printk(KERN_INFO "%s() Power %s\n", __FUNCTION__, (status ? "ON" : "OFF"));
mutex_unlock(&bl_power_mutex);
}
