/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2002 by Linus Nielsen Feltzing * * All files in this archive are subject to the GNU General Public License. * See the file COPYING in the source tree root for full license agreement. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include "config.h" #include #include "cpu.h" #include "kernel.h" #include "thread.h" #include "i2c.h" #include "debug.h" #include "rtc.h" #include "usb.h" #include "power.h" #include "system.h" #include "button.h" #include "timer.h" #include "backlight.h" #ifdef HAVE_BACKLIGHT_BRIGHTNESS #include "pcf50606.h" /* iRiver, iAudio X5 brightness */ #endif #if defined(HAVE_LCD_ENABLE) || defined(HAVE_LCD_SLEEP) #include "lcd.h" /* for lcd_enable() and lcd_sleep() */ #endif #ifdef HAVE_REMOTE_LCD #include "lcd-remote.h" #endif #if defined(TARGET_TREE) && !defined(SIMULATOR) #include "backlight-target.h" #endif #ifdef SIMULATOR static inline void __backlight_on(void) { sim_backlight(100); } static inline void __backlight_off(void) { sim_backlight(0); } #else /* Basic low-level code that simply switches backlight on or off. Probably * a nice candidate for inclusion in the target/ dir. */ #ifndef TARGET_TREE static inline void __backlight_on(void) { #if CONFIG_BACKLIGHT == BL_IRIVER_H100 and_l(~0x00020000, &GPIO1_OUT); #elif CONFIG_BACKLIGHT == BL_IRIVER_H300 lcd_enable(true); sleep(HZ/100); /* lcd needs time - avoid flashing for dark screens */ or_l(0x00020000, &GPIO1_OUT); #elif CONFIG_BACKLIGHT == BL_RTC /* Enable square wave */ rtc_write(0x0a, rtc_read(0x0a) | 0x40); #elif CONFIG_BACKLIGHT == BL_PA14_LO /* Player */ and_b(~0x40, &PADRH); /* drive and set low */ or_b(0x40, &PAIORH); #elif CONFIG_BACKLIGHT == BL_PA14_HI /* Ondio */ or_b(0x40, &PADRH); /* drive it high */ #elif CONFIG_BACKLIGHT == BL_GMINI P1 |= 0x10; #elif CONFIG_BACKLIGHT == BL_IPOD4G /* brightness full */ outl(0x80000000 | (0xff << 16), 0x7000a010); /* set port b bit 3 on */ outl(((0x100 | 1) << 3), 0x6000d824); #elif CONFIG_BACKLIGHT==BL_IPODMINI /* set port B03 on */ outl(((0x100 | 1) << 3), 0x6000d824); #elif CONFIG_BACKLIGHT==BL_IPODNANO /* set port B03 on */ outl(((0x100 | 1) << 3), 0x6000d824); /* set port L07 on */ outl(((0x100 | 1) << 7), 0x6000d12c); #elif CONFIG_BACKLIGHT==BL_IPOD3G outl(inl(0xc0001000) | 0x02, 0xc0001000); #elif CONFIG_BACKLIGHT==BL_IRIVER_IFP7XX GPIO3_SET = 1; #endif } static inline void __backlight_off(void) { #if CONFIG_BACKLIGHT == BL_IRIVER_H100 or_l(0x00020000, &GPIO1_OUT); #elif CONFIG_BACKLIGHT == BL_IRIVER_H300 and_l(~0x00020000, &GPIO1_OUT); lcd_enable(false); #elif CONFIG_BACKLIGHT == BL_RTC /* Disable square wave */ rtc_write(0x0a, rtc_read(0x0a) & ~0x40); #elif CONFIG_BACKLIGHT == BL_PA14_LO /* Player */ and_b(~0x40, &PAIORH); /* let it float (up) */ #elif CONFIG_BACKLIGHT == BL_PA14_HI /* Ondio */ and_b(~0x40, &PADRH); /* drive it low */ #elif CONFIG_BACKLIGHT == BL_GMINI P1 &= ~0x10; #elif CONFIG_BACKLIGHT == BL_IPOD4G /* fades backlight off on 4g */ outl(inl(0x70000084) & ~0x2000000, 0x70000084); outl(0x80000000, 0x7000a010); #elif CONFIG_BACKLIGHT==BL_IPODNANO /* set port B03 off */ outl(((0x100 | 0) << 3), 0x6000d824); /* set port L07 off */ outl(((0x100 | 0) << 7), 0x6000d12c); #elif CONFIG_BACKLIGHT==BL_IRIVER_IFP7XX GPIO3_CLR = 1; #elif CONFIG_BACKLIGHT==BL_IPOD3G outl(inl(0xc0001000) & ~0x02, 0xc0001000); #elif CONFIG_BACKLIGHT==BL_IPODMINI /* set port B03 off */ outl(((0x100 | 0) << 3), 0x6000d824); #endif } #endif #endif /* SIMULATOR */ #if defined(CONFIG_BACKLIGHT) && !defined(BOOTLOADER) const signed char backlight_timeout_value[19] = { -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 45, 60, 90 }; #define BACKLIGHT_ON 1 #define BACKLIGHT_OFF 2 #define REMOTE_BACKLIGHT_ON 3 #define REMOTE_BACKLIGHT_OFF 4 #define BACKLIGHT_UNBOOST_CPU 5 #ifdef HAVE_LCD_SLEEP #define LCD_SLEEP 6 #endif static void backlight_thread(void); static long backlight_stack[DEFAULT_STACK_SIZE/sizeof(long)]; #ifdef X5_BACKLIGHT_SHUTDOWN #define BACKLIGHT_QUIT 256 /* Need to save this for x5 shutdown */ struct thread_entry* backlight_thread_id; #endif static const char backlight_thread_name[] = "backlight"; static struct event_queue backlight_queue; static int backlight_timer; static int backlight_timeout = 5*HZ; #ifdef CONFIG_CHARGING static int backlight_timeout_plugged = 5*HZ; #endif #ifdef HAS_BUTTON_HOLD static int backlight_on_button_hold = 0; #endif #ifdef HAVE_REMOTE_LCD static int remote_backlight_timer; static int remote_backlight_timeout = 5*HZ; #ifdef CONFIG_CHARGING static int remote_backlight_timeout_plugged = 5*HZ; #endif #ifdef HAS_REMOTE_BUTTON_HOLD static int remote_backlight_on_button_hold = 0; #endif #endif #ifdef HAVE_LCD_SLEEP const signed char lcd_sleep_timeout_value[10] = { -1, 0, 5, 10, 15, 20, 30, 45, 60, 90 }; static int lcd_sleep_timer; static int lcd_sleep_timeout = 10*HZ; #endif #if defined(HAVE_BACKLIGHT_PWM_FADING) && !defined(SIMULATOR) /* backlight fading */ #define BL_PWM_INTERVAL 5000 /* Cycle interval in µs */ #define BL_PWM_COUNT 100 static const char backlight_fade_value[8] = { 0, 1, 2, 4, 6, 8, 10, 20 }; static int fade_in_count = 1; static int fade_out_count = 4; static bool bl_timer_active = false; static int bl_dim_current = BL_PWM_COUNT; static int bl_dim_target = BL_PWM_COUNT; static int bl_pwm_counter = 0; static volatile int bl_cycle_counter = 0; static enum {DIM_STATE_START, DIM_STATE_MAIN} bl_dim_state = DIM_STATE_START; static void backlight_isr(void) { int timer_period; bool idle = false; timer_period = TIMER_FREQ / 1000 * BL_PWM_INTERVAL / 1000; switch (bl_dim_state) { /* New cycle */ case DIM_STATE_START: bl_pwm_counter = 0; bl_cycle_counter++; if (bl_dim_current > 0 && bl_dim_current < BL_PWM_COUNT) { __backlight_on(); bl_pwm_counter = bl_dim_current; timer_period = timer_period * bl_pwm_counter / BL_PWM_COUNT; bl_dim_state = DIM_STATE_MAIN; } else { if (bl_dim_current) __backlight_on(); else __backlight_off(); if (bl_dim_current == bl_dim_target) idle = true; } break ; /* Dim main screen */ case DIM_STATE_MAIN: __backlight_off(); bl_dim_state = DIM_STATE_START; timer_period = timer_period * (BL_PWM_COUNT - bl_pwm_counter) / BL_PWM_COUNT; break ; } if ((bl_dim_target > bl_dim_current) && (bl_cycle_counter >= fade_in_count)) { bl_dim_current++; bl_cycle_counter = 0; } if ((bl_dim_target < bl_dim_current) && (bl_cycle_counter >= fade_out_count)) { bl_dim_current--; bl_cycle_counter = 0; } if (idle) { #ifdef CPU_COLDFIRE queue_post(&backlight_queue, BACKLIGHT_UNBOOST_CPU, NULL); #endif timer_unregister(); bl_timer_active = false; } else timer_set_period(timer_period); } static void backlight_switch(void) { if (bl_dim_target > (BL_PWM_COUNT/2)) { __backlight_on(); bl_dim_current = BL_PWM_COUNT; } else { __backlight_off(); bl_dim_current = 0; } } static void backlight_release_timer(void) { #ifdef CPU_COLDFIRE cpu_boost(false); #endif timer_unregister(); bl_timer_active = false; backlight_switch(); } static void backlight_dim(int value) { /* protect from extraneous calls with the same target value */ if (value == bl_dim_target) return; bl_dim_target = value; if (bl_timer_active) return ; if (timer_register(0, backlight_release_timer, 2, 0, backlight_isr)) { #ifdef CPU_COLDFIRE /* Prevent cpu frequency changes while dimming. */ cpu_boost(true); #endif bl_timer_active = true; } else backlight_switch(); } void backlight_set_fade_in(int index) { fade_in_count = backlight_fade_value[index]; } void backlight_set_fade_out(int index) { fade_out_count = backlight_fade_value[index]; } #endif /* defined(HAVE_BACKLIGHT_PWM_FADING) && !defined(SIMULATOR) */ static void _backlight_on(void) { #if defined(HAVE_BACKLIGHT_PWM_FADING) && !defined(SIMULATOR) if (fade_in_count > 0) backlight_dim(BL_PWM_COUNT); else { bl_dim_target = bl_dim_current = BL_PWM_COUNT; __backlight_on(); } #else __backlight_on(); #endif #ifdef HAVE_LCD_SLEEP lcd_sleep_timer = 0; /* LCD should be awake already */ #endif } static void _backlight_off(void) { #if defined(HAVE_BACKLIGHT_PWM_FADING) && !defined(SIMULATOR) if (fade_out_count > 0) backlight_dim(0); else { bl_dim_target = bl_dim_current = 0; __backlight_off(); } #else __backlight_off(); #endif #ifdef HAVE_LCD_SLEEP /* Start LCD sleep countdown */ if (lcd_sleep_timeout < 0) { lcd_sleep_timer = 0; /* Setting == Always */ lcd_sleep(); } else lcd_sleep_timer = lcd_sleep_timeout; #endif } #ifdef HAVE_REMOTE_LCD #ifdef SIMULATOR static void __remote_backlight_on(void) { sim_remote_backlight(100); } static void __remote_backlight_off(void) { sim_remote_backlight(0); } #else #ifndef TARGET_TREE static void __remote_backlight_on(void) { #if defined(IRIVER_H300_SERIES) and_l(~0x00000002, &GPIO1_OUT); #else and_l(~0x00000800, &GPIO_OUT); #endif } static void __remote_backlight_off(void) { #if defined(IRIVER_H300_SERIES) or_l(0x00000002, &GPIO1_OUT); #else or_l(0x00000800, &GPIO_OUT); #endif } #endif /* TARGET_TREE */ #endif /* SIMULATOR */ #endif /* HAVE_REMOTE_LCD */ /* Update state of backlight according to timeout setting */ static void backlight_update_state(void) { #ifdef CONFIG_CHARGING if (charger_inserted() #ifdef HAVE_USB_POWER || usb_powered() #endif ) backlight_timer = backlight_timeout_plugged; else #endif backlight_timer = backlight_timeout; /* Backlight == OFF in the setting? */ if (backlight_timer < 0) { backlight_timer = 0; /* Disable the timeout */ #ifdef HAS_BUTTON_HOLD if (backlight_on_button_hold == 2 && button_hold()) return; /* Keep on if "On" */ #endif _backlight_off(); } else { #ifdef HAS_BUTTON_HOLD if (backlight_on_button_hold == 1 && button_hold()) { /* Keep off if "Off". */ backlight_timer = 0; /* Disable the timeout */ return; } #endif _backlight_on(); } } #ifdef HAVE_REMOTE_LCD /* Update state of remote backlight according to timeout setting */ static void remote_backlight_update_state(void) { #ifdef CONFIG_CHARGING if (charger_inserted() #ifdef HAVE_USB_POWER || usb_powered() #endif ) remote_backlight_timer = remote_backlight_timeout_plugged; else #endif remote_backlight_timer = remote_backlight_timeout; /* Backlight == OFF in the setting? */ if (remote_backlight_timer < 0) { remote_backlight_timer = 0; /* Disable the timeout */ #ifdef HAS_REMOTE_BUTTON_HOLD if (remote_backlight_on_button_hold == 2 && remote_button_hold()) return; /* Keep on if "On" */ #endif __remote_backlight_off(); } else { #if defined(IRIVER_H100_SERIES) || defined(IRIVER_H300_SERIES) if (remote_type() == REMOTETYPE_H300_NONLCD) { backlight_update_state(); } else #endif { #ifdef HAS_REMOTE_BUTTON_HOLD if (remote_backlight_on_button_hold == 1 && remote_button_hold()) { /* Keep off if "Off". */ remote_backlight_timer = 0; /* Disable the timeout */ return; } #endif __remote_backlight_on(); } } } #endif /* HAVE_REMOTE_LCD */ void backlight_thread(void) { struct event ev; while(1) { queue_wait(&backlight_queue, &ev); switch(ev.id) { #ifdef HAVE_REMOTE_LCD case REMOTE_BACKLIGHT_ON: remote_backlight_update_state(); break; case REMOTE_BACKLIGHT_OFF: remote_backlight_timer = 0; /* Disable the timeout */ #ifdef HAS_REMOTE_BUTTON_HOLD if (remote_backlight_on_button_hold == 2 && remote_button_hold()) break; /* Keep on if "On" */ #endif __remote_backlight_off(); break; #endif /* HAVE_REMOTE_LCD */ case BACKLIGHT_ON: backlight_update_state(); break; case BACKLIGHT_OFF: backlight_timer = 0; /* Disable the timeout */ #ifdef HAS_BUTTON_HOLD if (backlight_on_button_hold == 2 && button_hold()) break; /* Keep on if "On" */ #endif _backlight_off(); break; #ifdef HAVE_LCD_SLEEP case LCD_SLEEP: lcd_sleep(); break; #endif #ifdef X5_BACKLIGHT_SHUTDOWN case BACKLIGHT_QUIT: remove_thread(backlight_thread_id); break; #endif #if defined(HAVE_BACKLIGHT_PWM_FADING) && defined(CPU_COLDFIRE) \ && !defined(SIMULATOR) case BACKLIGHT_UNBOOST_CPU: cpu_boost(false); break; #endif case SYS_USB_CONNECTED: /* Tell the USB thread that we are safe */ DEBUGF("backlight_thread got SYS_USB_CONNECTED\n"); usb_acknowledge(SYS_USB_CONNECTED_ACK); break; case SYS_USB_DISCONNECTED: usb_acknowledge(SYS_USB_DISCONNECTED_ACK); break; } /* end switch */ } /* end while */ } static void backlight_tick(void) { #ifdef CONFIG_CHARGING static bool charger_was_inserted = false; bool charger_is_inserted = charger_inserted() #ifdef HAVE_USB_POWER || usb_powered() #endif ; if( charger_was_inserted != charger_is_inserted ) { backlight_on(); #ifdef HAVE_REMOTE_LCD remote_backlight_on(); #endif } charger_was_inserted = charger_is_inserted; #endif /* CONFIG_CHARGING */ if(backlight_timer) { backlight_timer--; if(backlight_timer == 0) { backlight_off(); } } #ifdef HAVE_LCD_SLEEP else if(lcd_sleep_timer) { lcd_sleep_timer--; if(lcd_sleep_timer == 0) { /* Queue on bl thread or freeze! */ queue_post(&backlight_queue, LCD_SLEEP, NULL); } } #endif /* HAVE_LCD_SLEEP */ #ifdef HAVE_REMOTE_LCD if(remote_backlight_timer) { remote_backlight_timer--; if(remote_backlight_timer == 0) { remote_backlight_off(); } } #endif /* HAVE_REMOVE_LCD */ } void backlight_init(void) { queue_init(&backlight_queue, true); #ifdef X5_BACKLIGHT_SHUTDOWN backlight_thread_id = #endif create_thread(backlight_thread, backlight_stack, sizeof(backlight_stack), backlight_thread_name IF_PRIO(, PRIORITY_SYSTEM)); tick_add_task(backlight_tick); #ifdef SIMULATOR /* do nothing */ #elif CONFIG_BACKLIGHT == BL_IRIVER_H100 or_l(0x00020000, &GPIO1_ENABLE); or_l(0x00020000, &GPIO1_FUNCTION); and_l(~0x00020000, &GPIO1_OUT); /* Start with the backlight ON */ #elif CONFIG_BACKLIGHT == BL_IRIVER_H300 or_l(0x00020000, &GPIO1_ENABLE); or_l(0x00020000, &GPIO1_FUNCTION); or_l(0x00020000, &GPIO1_OUT); /* Start with the backlight ON */ #elif CONFIG_BACKLIGHT == BL_PA14_LO || CONFIG_BACKLIGHT == BL_PA14_HI PACR1 &= ~0x3000; /* Set PA14 (backlight control) to GPIO */ or_b(0x40, &PAIORH); /* ..and output */ #elif CONFIG_BACKLIGHT == BL_GMINI P1CON |= 0x10; /* P1.4 C-MOS output mode */ #endif backlight_on(); #ifdef HAVE_REMOTE_LCD remote_backlight_on(); #endif } #ifdef X5_BACKLIGHT_SHUTDOWN void x5_backlight_shutdown(void) { /* Turn on the screen and don't let anyone else mess with it. Called from clean_shutdown in misc.c. */ queue_empty(&backlight_queue); tick_remove_task(backlight_tick); /* Next time the thread runs, if at all, it will just remove itself. */ queue_post(&backlight_queue, BACKLIGHT_QUIT, NULL); __backlight_on(); } #endif /* X5_BACKLIGHT_SHUTDOWN */ void backlight_on(void) { queue_post(&backlight_queue, BACKLIGHT_ON, NULL); } void backlight_off(void) { queue_post(&backlight_queue, BACKLIGHT_OFF, NULL); } /* returns true when the backlight is on OR when it's set to always off */ bool is_backlight_on(void) { if (backlight_timer || backlight_get_current_timeout() <= 0) return true; else return false; } /* return value in ticks; 0 means always on, <0 means always off */ int backlight_get_current_timeout(void) { #ifdef CONFIG_CHARGING if (charger_inserted() #ifdef HAVE_USB_POWER || usb_powered() #endif ) return backlight_timeout_plugged; else return backlight_timeout; #else return backlight_timeout; #endif } void backlight_set_timeout(int index) { if((unsigned)index >= sizeof(backlight_timeout_value)) /* if given a weird value, use default */ index = 6; backlight_timeout = HZ * backlight_timeout_value[index]; backlight_update_state(); } #ifdef CONFIG_CHARGING void backlight_set_timeout_plugged(int index) { if((unsigned)index >= sizeof(backlight_timeout_value)) /* if given a weird value, use default */ index = 6; backlight_timeout_plugged = HZ * backlight_timeout_value[index]; backlight_update_state(); } #endif /* CONFIG_CHARGING */ #ifdef HAS_BUTTON_HOLD /* Hold button change event handler. */ void backlight_hold_changed(bool hold_button) { /* Hold switch overrides all backlight behavior except when set to "Normal" */ /* Queue or freeze */ if (hold_button && backlight_on_button_hold == 1) backlight_off(); /* setting == Off */ else /* setting == On, Normal, no hold button, or anything else */ backlight_on(); } void backlight_set_on_button_hold(int index) { if ((unsigned)index >= 3) /* if given a weird value, use default */ index = 0; if (index == backlight_on_button_hold) return; backlight_on_button_hold = index; backlight_hold_changed(button_hold()); } #endif /* HAS_BUTTON_HOLD */ #ifdef HAVE_LCD_SLEEP void lcd_set_sleep_after_backlight_off(int index) { if ((unsigned)index >= sizeof(lcd_sleep_timeout_value)) /* if given a weird value, use default */ index = 3; lcd_sleep_timeout = HZ * lcd_sleep_timeout_value[index]; if (backlight_timer > 0 || backlight_get_current_timeout() == 0) /* Timer will be set when bl turns off or bl set to on. */ return; /* Backlight is Off */ if (lcd_sleep_timeout < 0) lcd_sleep_timer = 1; /* Always - sleep next tick */ else lcd_sleep_timer = lcd_sleep_timeout; /* Never, other */ } #endif /* HAVE_LCD_SLEEP */ #ifdef HAVE_REMOTE_LCD void remote_backlight_on(void) { queue_post(&backlight_queue, REMOTE_BACKLIGHT_ON, NULL); } void remote_backlight_off(void) { queue_post(&backlight_queue, REMOTE_BACKLIGHT_OFF, NULL); } void remote_backlight_set_timeout(int index) { if((unsigned)index >= sizeof(backlight_timeout_value)) /* if given a weird value, use default */ index=6; remote_backlight_timeout = HZ * backlight_timeout_value[index]; remote_backlight_update_state(); } #ifdef CONFIG_CHARGING void remote_backlight_set_timeout_plugged(int index) { if((unsigned)index >= sizeof(backlight_timeout_value)) /* if given a weird value, use default */ index=6; remote_backlight_timeout_plugged = HZ * backlight_timeout_value[index]; remote_backlight_update_state(); } #endif /* CONFIG_CHARGING */ #ifdef HAS_REMOTE_BUTTON_HOLD /* Remote hold button change event handler. */ void remote_backlight_hold_changed(bool rc_hold_button) { /* Hold switch overrides all backlight behavior except when set to "Normal" */ /* Queue or freeze */ if (rc_hold_button && remote_backlight_on_button_hold == 1) remote_backlight_off(); /* setting == Off */ else /* setting == On, Normal, no hold button, or anything else */ remote_backlight_on(); } void remote_backlight_set_on_button_hold(int index) { if ((unsigned)index >= 3) /* if given a weird value, use default */ index = 0; if (index == remote_backlight_on_button_hold) return; remote_backlight_on_button_hold = index; remote_backlight_hold_changed(remote_button_hold()); } #endif /* HAS_REMOTE_BUTTON_HOLD */ /* return value in ticks; 0 means always on, <0 means always off */ int remote_backlight_get_current_timeout(void) { #ifdef CONFIG_CHARGING if (charger_inserted() #ifdef HAVE_USB_POWER || usb_powered() #endif ) return remote_backlight_timeout_plugged; else return remote_backlight_timeout; #else return remote_backlight_timeout; #endif } /* returns true when the backlight is on OR when it's set to always off */ bool is_remote_backlight_on(void) { if (remote_backlight_timer != 0 || remote_backlight_get_current_timeout() <= 0) return true; else return false; } #endif /* HAVE_REMOTE_LCD */ #else /* !defined(CONFIG_BACKLIGHT) || defined(BOOTLOADER) -- no backlight, empty dummy functions */ #if defined(BOOTLOADER) && defined(CONFIG_BACKLIGHT) void backlight_init(void) { #ifdef IRIVER_H300_SERIES or_l(0x00020000, &GPIO1_OUT); or_l(0x00020000, &GPIO1_ENABLE); or_l(0x00020000, &GPIO1_FUNCTION); #endif } #endif void backlight_on(void) {} void backlight_off(void) {} void backlight_set_timeout(int index) {(void)index;} bool is_backlight_on(void) {return true;} #ifdef HAVE_REMOTE_LCD void remote_backlight_on(void) {} void remote_backlight_off(void) {} void remote_backlight_set_timeout(int index) {(void)index;} bool is_remote_backlight_on(void) {return true;} #endif #endif /* defined(CONFIG_BACKLIGHT) && !defined(BOOTLOADER) */ /* TODO: Move low level code to target/ tree. Create __backlight_set_brightness and call from here. */ #ifdef HAVE_BACKLIGHT_BRIGHTNESS #if defined(IRIVER_H300_SERIES) || defined(IAUDIO_X5) void backlight_set_brightness(int val) { #ifndef SIMULATOR /* set brightness by changing the PWM * accepts 0..15 but note that 0 and 1 give a black display on H300! * 0 is black on the X5. */ /* disable IRQs while bitbanging */ int old_irq_level = set_irq_level(HIGHEST_IRQ_LEVEL); /* Clamp setting to range */ if(valMAX_BRIGHTNESS_SETTING) val=MAX_BRIGHTNESS_SETTING; pcf50606_write(0x35, (val << 1) | 0x01); /* 512Hz, Enable PWM */ /* enable IRQs again */ set_irq_level(old_irq_level); #else val=0; #endif } #endif #endif /* HAVE_BACKLIGHT_BRIGHTNESS */