diff options
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/zaurus/zaurus/zaurus_lcd.c | 118 |
1 files changed, 75 insertions, 43 deletions
diff --git a/sys/arch/zaurus/zaurus/zaurus_lcd.c b/sys/arch/zaurus/zaurus/zaurus_lcd.c index 1ada9f71f0e..e23c4627cf3 100644 --- a/sys/arch/zaurus/zaurus/zaurus_lcd.c +++ b/sys/arch/zaurus/zaurus/zaurus_lcd.c @@ -1,4 +1,4 @@ -/* $OpenBSD: zaurus_lcd.c,v 1.12 2005/01/31 02:22:17 uwe Exp $ */ +/* $OpenBSD: zaurus_lcd.c,v 1.13 2005/02/22 22:19:12 uwe Exp $ */ /* $NetBSD: lubbock_lcd.c,v 1.1 2003/08/09 19:38:53 bsh Exp $ */ /* @@ -136,28 +136,30 @@ const struct lcd_panel_geometry sharp_zaurus_C3000 = }; struct sharp_lcd_backlight { - int duty; - int vr; - int on; + int duty; /* LZ9JG18 DAC value */ + int cont; /* BACKLIGHT_CONT signal */ + int on; /* BACKLIGHT_ON signal */ }; #define CURRENT_BACKLIGHT sharp_zaurus_C3000_bl const struct sharp_lcd_backlight sharp_zaurus_C3000_bl[] = { - { 0x00, 0, 0 }, /* Light Off */ - { 0x00, 0, 1 }, - { 0x01, 0, 1 }, - { 0x07, 0, 1 }, - { 0x01, 1, 1 }, - { 0x07, 1, 1 }, - { 0x11, 1, 1 }, - { -1, -1, -1 } /* End of table */ + { 0x00, 0, 0 }, /* 0: Off */ + { 0x00, 0, 1 }, /* 1: 0% */ + { 0x01, 0, 1 }, /* 2: 20% */ + { 0x07, 0, 1 }, /* 3: 40% */ + { 0x01, 1, 1 }, /* 4: 60% */ + { 0x07, 1, 1 }, /* 5: 80% */ + { 0x11, 1, 1 }, /* 6: 100% */ + { -1, -1, -1 } /* 7: Invalid */ }; int lcd_max_brightness(void); int lcd_get_brightness(void); void lcd_set_brightness(int); - +void lcd_set_brightness_internal(int); +int lcd_get_backlight(void); +void lcd_set_backlight(int); void lcd_blank(int); void lcd_powerhook(int, void *); @@ -188,7 +190,8 @@ lcd_attach(struct device *parent, struct device *self, void *aux) (void)config_found(self, &aa, wsemuldisplaydevprint); - lcd_set_brightness(1); + /* Start with approximately 40% of full brightness. */ + lcd_set_brightness(3); (void)powerhook_establish(lcd_powerhook, sc); } @@ -227,10 +230,7 @@ void lcd_burner(void *v, u_int on, u_int flags) { - if (on && lcd_get_brightness() == 0) - lcd_set_brightness(1); - else if (!on && lcd_get_brightness() > 0) - lcd_set_brightness(0); + lcd_set_brightness(on ? lcd_get_brightness() : 0); } int @@ -260,6 +260,17 @@ lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, switch (dp->param) { case WSDISPLAYIO_PARAM_BACKLIGHT: + if (cmd == WSDISPLAYIO_GETPARAM) { + dp->min = 0; + dp->max = 1; + dp->curval = lcd_get_backlight(); + res = 0; + } else if (cmd == WSDISPLAYIO_SETPARAM) { + lcd_set_backlight(dp->curval); + res = 0; + } + break; + case WSDISPLAYIO_PARAM_CONTRAST: /* unsupported */ res = ENOTTY; @@ -267,7 +278,7 @@ lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, case WSDISPLAYIO_PARAM_BRIGHTNESS: if (cmd == WSDISPLAYIO_GETPARAM) { - dp->min = 0; /* XXX or 1? */ + dp->min = 1; dp->max = lcd_max_brightness(); dp->curval = lcd_get_brightness(); res = 0; @@ -286,7 +297,7 @@ lcd_param(struct pxa2x0_lcd_softc *sc, u_long cmd, */ static int lcdbrightnesscurval = 1; -static int lcdbrightnessaltval = 1; +static int lcdislit = 1; static int lcdisblank = 0; int @@ -302,22 +313,13 @@ int lcd_get_brightness(void) { - if (lcdisblank) - return lcdbrightnessaltval; - else - return lcdbrightnesscurval; + return lcdbrightnesscurval; } void lcd_set_brightness(int newval) { int max; - int i; - - if (lcdisblank) { - lcdbrightnessaltval = newval; - return; - } max = lcd_max_brightness(); if (newval < 0) @@ -325,55 +327,85 @@ lcd_set_brightness(int newval) else if (newval > max) newval = max; + if (lcd_get_backlight() && !lcdisblank) + lcd_set_brightness_internal(newval); + + if (newval > 0) + lcdbrightnesscurval = newval; +} + +void +lcd_set_brightness_internal(int newval) +{ + static int curval = 1; + int i; + /* * It appears that the C3000 backlight can draw too much power if we * switch it from a low to a high brightness. Increasing brightness * in steps avoids this issue. */ - if (newval > lcdbrightnesscurval) { - for (i = lcdbrightnesscurval + 1; i <= newval; i++) { + if (newval > curval) { + for (i = curval + 1; i <= newval; i++) { zssp_write_lz9jg18(CURRENT_BACKLIGHT[i].duty); scoop_set_backlight(CURRENT_BACKLIGHT[i].on, - CURRENT_BACKLIGHT[i].vr); + CURRENT_BACKLIGHT[i].cont); delay(5000); } } else { zssp_write_lz9jg18(CURRENT_BACKLIGHT[newval].duty); scoop_set_backlight(CURRENT_BACKLIGHT[newval].on, - CURRENT_BACKLIGHT[newval].vr); + CURRENT_BACKLIGHT[newval].cont); } - lcdbrightnesscurval = newval; + curval = newval; +} + +int +lcd_get_backlight(void) +{ + + return lcdislit; +} + +void +lcd_set_backlight(int on) +{ + + if (!on) { + lcd_set_brightness(0); + lcdislit = 0; + } else { + lcdislit = 1; + lcd_set_brightness(lcd_get_brightness()); + } } void lcd_blank(int blank) { - if (blank && !lcdisblank) { - lcdbrightnessaltval = lcdbrightnesscurval; + if (blank) { lcd_set_brightness(0); lcdisblank = 1; - } else if (!blank && lcdisblank) { + } else { lcdisblank = 0; - lcd_set_brightness(lcdbrightnessaltval); + lcd_set_brightness(lcd_get_brightness()); } } void lcd_powerhook(int why, void *v) { - static int lcdwasblank = 0; switch (why) { case PWR_SUSPEND: case PWR_STANDBY: - lcdwasblank = lcdisblank; - lcd_blank(1); + lcd_set_brightness(0); break; case PWR_RESUME: - lcd_blank(lcdwasblank); + lcd_set_brightness(lcd_get_brightness()); break; } } |