diff options
Diffstat (limited to 'firmware/target/arm/s3c2440/gigabeat-fx/backlight-meg-fx.c')
| -rw-r--r-- | firmware/target/arm/s3c2440/gigabeat-fx/backlight-meg-fx.c | 679 |
1 files changed, 142 insertions, 537 deletions
diff --git a/firmware/target/arm/s3c2440/gigabeat-fx/backlight-meg-fx.c b/firmware/target/arm/s3c2440/gigabeat-fx/backlight-meg-fx.c index a1b6a8a583..a8f8ef5d85 100644 --- a/firmware/target/arm/s3c2440/gigabeat-fx/backlight-meg-fx.c +++ b/firmware/target/arm/s3c2440/gigabeat-fx/backlight-meg-fx.c @@ -25,19 +25,14 @@ #include "sc606-meg-fx.h" #include "power.h" - #define FLICKER_PERIOD 15 #define BUTTONLIGHT_MENU (SC606_LED_B1) #define BUTTONLIGHT_ALL (SC606_LED_B1 | SC606_LED_B2 | SC606_LED_C1 | SC606_LED_C2) static void led_control_service(void); static unsigned short backlight_brightness; -static unsigned short backlight_current; static unsigned short backlight_target; -static unsigned short time_til_fade; -static unsigned short fade_interval; -static unsigned short initial_tick_delay; -static unsigned char backlight_leds; +static unsigned short buttonlight_target; static enum backlight_states { @@ -45,198 +40,95 @@ static enum backlight_states BACKLIGHT_CONTROL_OFF, BACKLIGHT_CONTROL_ON, BACKLIGHT_CONTROL_SET, - BACKLIGHT_CONTROL_FADE_OFF, - BACKLIGHT_CONTROL_FADE_ON, - BACKLIGHT_CONTROL_FADE_ON_FROM_OFF + BACKLIGHT_CONTROL_FADE } backlight_control; - +static enum sc606_states +{ + SC606_CONTROL_IDLE, + SC606_CONTROL_A12, + SC606_CONTROL_B12, + SC606_CONTROL_C12, + SC606_CONTROL_CONF +} sc606_control; enum buttonlight_states { + BUTTONLIGHT_CONTROL_IDLE, + /* turn button lights off */ - BUTTONLIGHT_MODE_OFF_ENTRY, - BUTTONLIGHT_MODE_OFF, + BUTTONLIGHT_CONTROL_OFF, /* turns button lights on to setting */ - BUTTONLIGHT_MODE_ON_ENTRY, - BUTTONLIGHT_MODE_ON, - - /* turns button lights on to minimum */ - BUTTONLIGHT_MODE_FAINT_ENTRY, - BUTTONLIGHT_MODE_FAINT, - - /* allows button lights to flicker when triggered */ - BUTTONLIGHT_MODE_FLICKER_ENTRY, - BUTTONLIGHT_MODE_FLICKER, - BUTTONLIGHT_MODE_FLICKERING, - - /* button lights solid */ - BUTTONLIGHT_MODE_SOLID_ENTRY, - BUTTONLIGHT_MODE_SOLID, - - /* button light charing */ - BUTTONLIGHT_MODE_CHARGING_ENTRY, - BUTTONLIGHT_MODE_CHARGING, - BUTTONLIGHT_MODE_CHARGING_WAIT, - - /* internal use only */ - BUTTONLIGHT_HELPER_SET, - BUTTONLIGHT_HELPER_SET_FINAL, - BUTTONLIGHT_MODE_STOP, - + BUTTONLIGHT_CONTROL_ON, + /* buttonlights follow the backlight settings */ - BUTTONLIGHT_MODE_FOLLOW_ENTRY, - BUTTONLIGHT_MODE_FOLLOW, -}; - - + BUTTONLIGHT_CONTROL_FADE, -static char buttonlight_leds; -static unsigned short buttonlight_setting; -static unsigned short buttonlight_current; -static unsigned char buttonlight_selected; -static enum buttonlight_states buttonlight_state; -static enum buttonlight_states buttonlight_saved_state; -static unsigned short buttonlight_flickering; +} buttonlight_control; static unsigned short buttonlight_trigger_now; -static unsigned short buttonlight_trigger_brightness; - - - -static unsigned short charging_led_index; -static unsigned short buttonlight_charging_counter; #define CHARGING_LED_COUNT 60 unsigned char charging_leds[] = { 0x00, 0x20, 0x38, 0x3C }; - - bool __backlight_init(void) { + backlight_brightness=DEFAULT_BRIGHTNESS_SETTING; backlight_control = BACKLIGHT_CONTROL_IDLE; - backlight_current = DEFAULT_BRIGHTNESS_SETTING; - - buttonlight_state = BUTTONLIGHT_MODE_OFF; + buttonlight_control = BUTTONLIGHT_CONTROL_IDLE; - buttonlight_selected = 0x04; - - /* delay 4 seconds before any fading */ - initial_tick_delay = 400; /* put the led control on the tick list */ tick_add_task(led_control_service); return true; } - - void __backlight_on(void) { - /* now go turn the backlight on */ backlight_control = BACKLIGHT_CONTROL_ON; } - - void __backlight_off(void) { backlight_control = BACKLIGHT_CONTROL_OFF; } - - /* Assumes that the backlight has been initialized */ void __backlight_set_brightness(int brightness) { /* stop the interrupt from messing us up */ backlight_control = BACKLIGHT_CONTROL_IDLE; - - backlight_brightness = brightness + 1; - - /* only set the brightness if it is different from the current */ - if (backlight_brightness != backlight_current) - { - backlight_control = BACKLIGHT_CONTROL_SET; - } + backlight_brightness = brightness; + backlight_control = BACKLIGHT_CONTROL_SET; } - - /* only works if the buttonlight mode is set to triggered mode */ void __buttonlight_trigger(void) { buttonlight_trigger_now = 1; } - - - /* map the mode from the command into the state machine entries */ -void __buttonlight_mode(enum buttonlight_mode mode, - enum buttonlight_selection selection, - unsigned short brightness) +void __buttonlight_mode(enum buttonlight_mode mode) { /* choose stop to setup mode */ - buttonlight_state = BUTTONLIGHT_MODE_STOP; - - - /* clip brightness */ - if (brightness > MAX_BRIGHTNESS_SETTING) - { - brightness = MAX_BRIGHTNESS_SETTING; - } - - brightness++; - - /* Select which LEDs to use */ - switch (selection) - { - case BUTTONLIGHT_LED_ALL: - buttonlight_selected = BUTTONLIGHT_ALL; - break; - - case BUTTONLIGHT_LED_MENU: - buttonlight_selected = BUTTONLIGHT_MENU; - break; - } + buttonlight_control = BUTTONLIGHT_CONTROL_IDLE; /* which mode to use */ switch (mode) { case BUTTONLIGHT_OFF: - buttonlight_state = BUTTONLIGHT_MODE_OFF_ENTRY; + buttonlight_control = BUTTONLIGHT_CONTROL_OFF; break; case BUTTONLIGHT_ON: - buttonlight_trigger_brightness = brightness; - buttonlight_state = BUTTONLIGHT_MODE_ON_ENTRY; + buttonlight_control = BUTTONLIGHT_CONTROL_ON; break; - - /* faint is just a quick way to set ON to 1 */ - case BUTTONLIGHT_FAINT: - buttonlight_trigger_brightness = 1; - buttonlight_state = BUTTONLIGHT_MODE_ON_ENTRY; - break; - - case BUTTONLIGHT_FLICKER: - buttonlight_trigger_brightness = brightness; - buttonlight_state = BUTTONLIGHT_MODE_FLICKER_ENTRY; - break; - - case BUTTONLIGHT_SIGNAL: - buttonlight_trigger_brightness = brightness; - buttonlight_state = BUTTONLIGHT_MODE_SOLID_ENTRY; - break; - + case BUTTONLIGHT_FOLLOW: - buttonlight_state = BUTTONLIGHT_MODE_FOLLOW_ENTRY; - break; - - case BUTTONLIGHT_CHARGING: - buttonlight_state = BUTTONLIGHT_MODE_CHARGING_ENTRY; + buttonlight_control = BUTTONLIGHT_CONTROL_FADE; break; default: @@ -246,16 +138,11 @@ void __buttonlight_mode(enum buttonlight_mode mode, } - - /* * The button lights have 'modes' of operation. Each mode must setup and * execute its own operation - taking care that this is all done in an ISR. - * */ - - /* led_control_service runs in interrupt context - be brief! * This service is called once per interrupt timer tick - 100 times a second. * @@ -265,428 +152,146 @@ void __buttonlight_mode(enum buttonlight_mode mode, * Putting all led servicing in one thread means that we wont step on any * i2c operations - they are all serialized here in the ISR tick. It also * insures that we get called at equal timing for good visual effect. - * - * The buttonlight service runs only after all backlight services have finished. - * Fading the buttonlights is possible, but not recommended because of the - * additional calls needed during the ISR */ static void led_control_service(void) { - if(initial_tick_delay) { - initial_tick_delay--; - return; - } - switch (backlight_control) + static unsigned char + sc606regAval=DEFAULT_BRIGHTNESS_SETTING, + sc606regBval=DEFAULT_BRIGHTNESS_SETTING, + sc606regCval=DEFAULT_BRIGHTNESS_SETTING, + sc606regCONFval=3; + + static bool sc606_changed=true; + + if(sc606_changed==false) { - case BACKLIGHT_CONTROL_IDLE: - switch (buttonlight_state) + switch (backlight_control) { - case BUTTONLIGHT_MODE_STOP: break; - - /* Buttonlight mode: OFF */ - case BUTTONLIGHT_MODE_OFF_ENTRY: - if (buttonlight_current) - { - buttonlight_leds = 0x00; - sc606_write(SC606_REG_CONF, backlight_leds); - buttonlight_current = 0; - } - buttonlight_state = BUTTONLIGHT_MODE_OFF; - break; - - case BUTTONLIGHT_MODE_OFF: - break; - - - /* button mode: CHARGING - show charging sequence */ - case BUTTONLIGHT_MODE_CHARGING_ENTRY: - /* start turned off */ - buttonlight_leds = 0x00; - sc606_write(SC606_REG_CONF, backlight_leds); - buttonlight_current = 0; - - /* temporary save for the next mode - then to do settings */ - buttonlight_setting = DEFAULT_BRIGHTNESS_SETTING; - buttonlight_saved_state = BUTTONLIGHT_MODE_CHARGING_WAIT; - buttonlight_state = BUTTONLIGHT_HELPER_SET; - break; - - - case BUTTONLIGHT_MODE_CHARGING: - if (--buttonlight_charging_counter == 0) - { - /* change led */ - if (charging_state()) - { - buttonlight_leds = charging_leds[charging_led_index]; - if (++charging_led_index >= sizeof(charging_leds)) - { - charging_led_index = 0; - } - sc606_write(SC606_REG_CONF, backlight_leds | buttonlight_leds); - buttonlight_charging_counter = CHARGING_LED_COUNT; - } + case BACKLIGHT_CONTROL_IDLE: + backlight_control = BACKLIGHT_CONTROL_IDLE; + break; + case BACKLIGHT_CONTROL_OFF: + sc606_changed=true; + sc606regCONFval &= ~0x03; + backlight_control = BACKLIGHT_CONTROL_IDLE; + break; + case BACKLIGHT_CONTROL_ON: + sc606_changed=true; + sc606regCONFval |= 0x03; + backlight_control = BACKLIGHT_CONTROL_IDLE; + break; + case BACKLIGHT_CONTROL_SET: + sc606regAval=backlight_brightness; + sc606_changed=true; + backlight_control = BACKLIGHT_CONTROL_ON; + break; + case BACKLIGHT_CONTROL_FADE: + sc606_changed=true; + sc606regCONFval |= 0x03; + /* The SC606 LED driver can set the brightness in 64 steps */ + if(backlight_target==sc606regAval) + if(sc606regAval) + backlight_control = BACKLIGHT_CONTROL_ON; + else + backlight_control = BACKLIGHT_CONTROL_OFF; else - { - buttonlight_state = BUTTONLIGHT_MODE_CHARGING_ENTRY; - } - } - break; - - /* wait for the charget to be plugged in */ - case BUTTONLIGHT_MODE_CHARGING_WAIT: - if (charging_state()) - { - charging_led_index = 0; - buttonlight_charging_counter = CHARGING_LED_COUNT; - buttonlight_state = BUTTONLIGHT_MODE_CHARGING; - } - break; - - - /* Buttonlight mode: FOLLOW - try to stay current with backlight - * since this runs in the idle of the backlight it will not really - * follow in real time - */ - case BUTTONLIGHT_MODE_FOLLOW_ENTRY: - /* case 1 - backlight on, but buttonlight is off */ - if (backlight_current) - { - /* Turn the buttonlights on */ - buttonlight_leds = buttonlight_selected; - sc606_write(SC606_REG_CONF, backlight_leds | buttonlight_leds); - - /* temporary save for the next mode - then to do settings */ - buttonlight_setting = backlight_current; - buttonlight_saved_state = BUTTONLIGHT_MODE_FOLLOW; - buttonlight_state = BUTTONLIGHT_HELPER_SET; - } - /* case 2 - backlight off, but buttonlight is on */ - else - { - buttonlight_current = 0; - buttonlight_leds = 0x00; - sc606_write(SC606_REG_CONF, backlight_leds); - buttonlight_state = BUTTONLIGHT_MODE_FOLLOW; - } - break; - - case BUTTONLIGHT_MODE_FOLLOW: - if (buttonlight_current != backlight_current) - { - /* case 1 - backlight on, but buttonlight is off */ - if (backlight_current) - { - if (0 == buttonlight_current) - { - /* Turn the buttonlights on */ - buttonlight_leds = buttonlight_selected; - sc606_write(SC606_REG_CONF, backlight_leds | buttonlight_leds); - } - - /* temporary save for the next mode - then to do settings */ - buttonlight_setting = backlight_current; - buttonlight_saved_state = BUTTONLIGHT_MODE_FOLLOW; - buttonlight_state = BUTTONLIGHT_HELPER_SET; - } - - /* case 2 - backlight off, but buttonlight is on */ + if(backlight_target>sc606regAval) + sc606regAval++; + else + sc606regAval--; + break; + default: + break; + } + switch (buttonlight_control) + { + case BUTTONLIGHT_CONTROL_IDLE: + buttonlight_control=BUTTONLIGHT_CONTROL_IDLE; + break; + case BUTTONLIGHT_CONTROL_OFF: + sc606_changed=true; + sc606regCONFval &= ~0x3C; + buttonlight_control=BUTTONLIGHT_CONTROL_IDLE; + break; + case BUTTONLIGHT_CONTROL_ON: + sc606_changed=true; + sc606regBval=sc606regCval=backlight_brightness; + sc606regCONFval |= 0x3C; + buttonlight_control=BUTTONLIGHT_CONTROL_IDLE; + break; + case BUTTONLIGHT_CONTROL_FADE: + sc606_changed=true; + sc606regCONFval |= 0x3C; + if(buttonlight_target==sc606regBval) + if(sc606regBval) + buttonlight_control = BUTTONLIGHT_CONTROL_ON; + else + buttonlight_control = BUTTONLIGHT_CONTROL_OFF; else - { - buttonlight_current = 0; - buttonlight_leds = 0x00; - sc606_write(SC606_REG_CONF, backlight_leds); - } - - } - break; - - - - /* Buttonlight mode: ON - stays at the set brightness */ - case BUTTONLIGHT_MODE_ON_ENTRY: - buttonlight_leds = buttonlight_selected; - sc606_write(SC606_REG_CONF, backlight_leds | buttonlight_leds); - - /* temporary save for the next mode - then to do settings */ - buttonlight_setting = buttonlight_trigger_brightness; - buttonlight_saved_state = BUTTONLIGHT_MODE_ON; - buttonlight_state = BUTTONLIGHT_HELPER_SET; - break; - - case BUTTONLIGHT_MODE_ON: - break; - - - - /* Buttonlight mode: FLICKER */ - case BUTTONLIGHT_MODE_FLICKER_ENTRY: - /* already on? turn it off */ - if (buttonlight_current) - { - buttonlight_leds = 0x00; - sc606_write(SC606_REG_CONF, backlight_leds); - buttonlight_current = 0; - } - - /* set the brightness if not already set */ - if (buttonlight_current != buttonlight_trigger_brightness) - { - /* temporary save for the next mode - then to do settings */ - buttonlight_setting = buttonlight_trigger_brightness; - buttonlight_saved_state = BUTTONLIGHT_MODE_FLICKER; - buttonlight_state = BUTTONLIGHT_HELPER_SET; - } - else buttonlight_state = BUTTONLIGHT_MODE_FLICKER; - break; - - - case BUTTONLIGHT_MODE_FLICKER: - /* wait for the foreground to trigger flickering */ - if (buttonlight_trigger_now) - { - /* turn them on */ - buttonlight_leds = buttonlight_selected; - buttonlight_current = buttonlight_setting; - sc606_write(SC606_REG_CONF, backlight_leds | buttonlight_leds); - - /* reset the trigger and go flicker the LEDs */ - buttonlight_trigger_now = 0; - buttonlight_flickering = FLICKER_PERIOD; - buttonlight_state = BUTTONLIGHT_MODE_FLICKERING; - } - break; - - - case BUTTONLIGHT_MODE_FLICKERING: - /* flicker the LEDs for as long as we get triggered */ - if (buttonlight_flickering) - { - /* turn the leds off if they are on */ - if (buttonlight_current) - { - buttonlight_leds = 0x00; - sc606_write(SC606_REG_CONF, backlight_leds); - buttonlight_current = 0; - } + if(buttonlight_target>sc606regBval) + sc606regCval=++sc606regBval; + else + sc606regCval=--sc606regBval; + break; + default: + break; + } + } - buttonlight_flickering--; - } + switch (sc606_control) + { + case SC606_CONTROL_IDLE: + if(sc606_changed) + sc606_control=SC606_CONTROL_A12; else - { - /* is flickering triggered again? */ - if (!buttonlight_trigger_now) - { - /* completed a cycle - no new triggers - go back and wait */ - buttonlight_state = BUTTONLIGHT_MODE_FLICKER; - } - else - { - /* reset flickering */ - buttonlight_trigger_now = 0; - buttonlight_flickering = FLICKER_PERIOD; - - /* turn buttonlights on */ - buttonlight_leds = buttonlight_selected; - buttonlight_current = buttonlight_setting; - sc606_write(SC606_REG_CONF, backlight_leds | buttonlight_leds); - } - } + sc606_control=SC606_CONTROL_IDLE; break; - - - /* Buttonlight mode: SIGNAL / SOLID */ - case BUTTONLIGHT_MODE_SOLID_ENTRY: - /* already on? turn it off */ - if (buttonlight_current) - { - buttonlight_leds = 0x00; - sc606_write(SC606_REG_CONF, backlight_leds); - buttonlight_current = 0; - } - - /* set the brightness if not already set */ - /* temporary save for the next mode - then to do settings */ - buttonlight_setting = buttonlight_trigger_brightness; - buttonlight_saved_state = BUTTONLIGHT_MODE_SOLID; - buttonlight_state = BUTTONLIGHT_HELPER_SET; + case SC606_CONTROL_A12: + sc606_write(SC606_REG_A , sc606regAval); + sc606_control=SC606_CONTROL_B12; break; - - - case BUTTONLIGHT_MODE_SOLID: - /* wait for the foreground to trigger */ - if (buttonlight_trigger_now) - { - /* turn them on if not already on */ - if (0 == buttonlight_current) - { - buttonlight_leds = buttonlight_selected; - buttonlight_current = buttonlight_setting; - sc606_write(SC606_REG_CONF, backlight_leds | buttonlight_leds); - } - - /* reset the trigger */ - buttonlight_trigger_now = 0; - } - else - { - if (buttonlight_current) - { - buttonlight_leds = 0x00; - sc606_write(SC606_REG_CONF, backlight_leds); - buttonlight_current = 0; - } - } + case SC606_CONTROL_B12: + sc606_write(SC606_REG_B , sc606regBval); + sc606_control=SC606_CONTROL_C12; break; - - - /* set the brightness for the buttonlights - takes 2 passes */ - case BUTTONLIGHT_HELPER_SET: - sc606_write(SC606_REG_B, buttonlight_setting-1); - buttonlight_state = BUTTONLIGHT_HELPER_SET_FINAL; + case SC606_CONTROL_C12: + sc606_write(SC606_REG_C , sc606regCval); + sc606_control=SC606_CONTROL_CONF; break; - - case BUTTONLIGHT_HELPER_SET_FINAL: - sc606_write(SC606_REG_C, buttonlight_setting-1); - buttonlight_current = buttonlight_setting; - buttonlight_state = buttonlight_saved_state; + case SC606_CONTROL_CONF: + sc606_write(SC606_REG_CONF , sc606regCONFval); + sc606_changed=false; + sc606_control=SC606_CONTROL_IDLE; break; - - default: + default: + sc606_control=SC606_CONTROL_A12; break; - - } - break; - - - case BACKLIGHT_CONTROL_FADE_ON_FROM_OFF: - backlight_leds = 0x03; - sc606_write(SC606_REG_CONF, 0x03 | buttonlight_leds); - backlight_control = BACKLIGHT_CONTROL_FADE_ON; - break; - - - case BACKLIGHT_CONTROL_OFF: - backlight_current = 0; - backlight_leds = 0x00; - sc606_write(SC606_REG_CONF, buttonlight_leds); - backlight_control = BACKLIGHT_CONTROL_IDLE; - - break; - - - case BACKLIGHT_CONTROL_ON: - backlight_leds = 0x03; - sc606_write(SC606_REG_CONF, 0x03 | buttonlight_leds); - backlight_current = backlight_brightness; - backlight_control = BACKLIGHT_CONTROL_IDLE; - break; - - - case BACKLIGHT_CONTROL_SET: - /* The SC606 LED driver can set the brightness in 64 steps */ - sc606_write(SC606_REG_A, backlight_brightness-1); - - /* if we were turned off - turn the backlight on */ - if (backlight_current) - { - backlight_current = backlight_brightness; - backlight_control = BACKLIGHT_CONTROL_IDLE; - } - else - { - backlight_control = BACKLIGHT_CONTROL_ON; - } - break; - - - case BACKLIGHT_CONTROL_FADE_ON: - if (--time_til_fade) return; - - /* The SC606 LED driver can set the brightness in 64 steps */ - sc606_write(SC606_REG_A, backlight_current++); - - /* have we hit the target? */ - if (backlight_current == backlight_target) - { - backlight_control = BACKLIGHT_CONTROL_IDLE; - } - else - { - time_til_fade = fade_interval; - } - break; - - - case BACKLIGHT_CONTROL_FADE_OFF: - if (--time_til_fade) return; - - /* The SC606 LED driver can set the brightness in 64 steps */ - sc606_write(SC606_REG_A, --backlight_current); - - /* have we hit the target? */ - if (backlight_current == backlight_target) - { - if (backlight_current) - { - backlight_control = BACKLIGHT_CONTROL_IDLE; - } - else - { - backlight_control = BACKLIGHT_CONTROL_OFF; - } - - } - else - { - time_til_fade = fade_interval; - } - break; } - - if(backlight_current) + + if(sc606regCONFval&0x03) lcd_enable(true); else lcd_enable(false); } +void __button_backlight_on(void) +{ + buttonlight_control = BUTTONLIGHT_CONTROL_IDLE; + buttonlight_target = backlight_brightness; + buttonlight_control = BUTTONLIGHT_CONTROL_FADE; +} - - +void __button_backlight_off(void) +{ + buttonlight_control = BUTTONLIGHT_CONTROL_IDLE; + buttonlight_target = 0; + buttonlight_control = BUTTONLIGHT_CONTROL_FADE; +} void __backlight_dim(bool dim_now) { - unsigned short target; - /* dont let the interrupt tick happen */ backlight_control = BACKLIGHT_CONTROL_IDLE; - - target = (dim_now == true) ? 0 : backlight_brightness; - - /* only try and fade if the target is different */ - if (backlight_current != target) - { - backlight_target = target; - - if (backlight_current > backlight_target) - { - time_til_fade = fade_interval = 4; - backlight_control = BACKLIGHT_CONTROL_FADE_OFF; - } - else - { - time_til_fade = fade_interval = 1; - if (backlight_current) - { - backlight_control = BACKLIGHT_CONTROL_FADE_ON; - } - else - { - backlight_control = BACKLIGHT_CONTROL_FADE_ON_FROM_OFF; - } - } - } - + backlight_target = (dim_now == true) ? 0 : backlight_brightness; + backlight_control = BACKLIGHT_CONTROL_FADE; } - - |