diff options
Diffstat (limited to 'drivers/video/backlight/corgi_bl.c')
-rw-r--r-- | drivers/video/backlight/corgi_bl.c | 99 |
1 files changed, 36 insertions, 63 deletions
diff --git a/drivers/video/backlight/corgi_bl.c b/drivers/video/backlight/corgi_bl.c index d0aaf450e8c..f86213b4a8f 100644 --- a/drivers/video/backlight/corgi_bl.c +++ b/drivers/video/backlight/corgi_bl.c @@ -25,24 +25,30 @@ #define CORGI_DEFAULT_INTENSITY 0x1f #define CORGI_LIMIT_MASK 0x0b -static int corgibl_powermode = FB_BLANK_UNBLANK; -static int current_intensity = 0; -static int corgibl_limit = 0; +static int corgibl_intensity; static void (*corgibl_mach_set_intensity)(int intensity); static spinlock_t bl_lock = SPIN_LOCK_UNLOCKED; static struct backlight_properties corgibl_data; +static struct backlight_device *corgi_backlight_device; + +static unsigned long corgibl_flags; +#define CORGIBL_SUSPENDED 0x01 +#define CORGIBL_BATTLOW 0x02 -static void corgibl_send_intensity(int intensity) +static int corgibl_send_intensity(struct backlight_device *bd) { unsigned long flags; void (*corgi_kick_batt)(void); + int intensity = bd->props->brightness; - if (corgibl_powermode != FB_BLANK_UNBLANK) { + if (bd->props->power != FB_BLANK_UNBLANK) + intensity = 0; + if (bd->props->fb_blank != FB_BLANK_UNBLANK) intensity = 0; - } else { - if (corgibl_limit) - intensity &= CORGI_LIMIT_MASK; - } + if (corgibl_flags & CORGIBL_SUSPENDED) + intensity = 0; + if (corgibl_flags & CORGIBL_BATTLOW) + intensity &= CORGI_LIMIT_MASK; spin_lock_irqsave(&bl_lock, flags); @@ -50,45 +56,29 @@ static void corgibl_send_intensity(int intensity) spin_unlock_irqrestore(&bl_lock, flags); + corgibl_intensity = intensity; + corgi_kick_batt = symbol_get(sharpsl_battery_kick); if (corgi_kick_batt) { corgi_kick_batt(); symbol_put(sharpsl_battery_kick); } -} -static void corgibl_blank(int blank) -{ - switch(blank) { - - case FB_BLANK_NORMAL: - case FB_BLANK_VSYNC_SUSPEND: - case FB_BLANK_HSYNC_SUSPEND: - case FB_BLANK_POWERDOWN: - if (corgibl_powermode == FB_BLANK_UNBLANK) { - corgibl_send_intensity(0); - corgibl_powermode = blank; - } - break; - case FB_BLANK_UNBLANK: - if (corgibl_powermode != FB_BLANK_UNBLANK) { - corgibl_powermode = blank; - corgibl_send_intensity(current_intensity); - } - break; - } + return 0; } #ifdef CONFIG_PM static int corgibl_suspend(struct platform_device *dev, pm_message_t state) { - corgibl_blank(FB_BLANK_POWERDOWN); + corgibl_flags |= CORGIBL_SUSPENDED; + corgibl_send_intensity(corgi_backlight_device); return 0; } static int corgibl_resume(struct platform_device *dev) { - corgibl_blank(FB_BLANK_UNBLANK); + corgibl_flags &= ~CORGIBL_SUSPENDED; + corgibl_send_intensity(corgi_backlight_device); return 0; } #else @@ -96,54 +86,38 @@ static int corgibl_resume(struct platform_device *dev) #define corgibl_resume NULL #endif - -static int corgibl_set_power(struct backlight_device *bd, int state) -{ - corgibl_blank(state); - return 0; -} - -static int corgibl_get_power(struct backlight_device *bd) +static int corgibl_get_intensity(struct backlight_device *bd) { - return corgibl_powermode; + return corgibl_intensity; } -static int corgibl_set_intensity(struct backlight_device *bd, int intensity) +static int corgibl_set_intensity(struct backlight_device *bd) { - if (intensity > corgibl_data.max_brightness) - intensity = corgibl_data.max_brightness; - corgibl_send_intensity(intensity); - current_intensity=intensity; + corgibl_send_intensity(corgi_backlight_device); return 0; } -static int corgibl_get_intensity(struct backlight_device *bd) -{ - return current_intensity; -} - /* * Called when the battery is low to limit the backlight intensity. * If limit==0 clear any limit, otherwise limit the intensity */ void corgibl_limit_intensity(int limit) { - corgibl_limit = (limit ? 1 : 0); - corgibl_send_intensity(current_intensity); + if (limit) + corgibl_flags |= CORGIBL_BATTLOW; + else + corgibl_flags &= ~CORGIBL_BATTLOW; + corgibl_send_intensity(corgi_backlight_device); } EXPORT_SYMBOL(corgibl_limit_intensity); static struct backlight_properties corgibl_data = { - .owner = THIS_MODULE, - .get_power = corgibl_get_power, - .set_power = corgibl_set_power, + .owner = THIS_MODULE, .get_brightness = corgibl_get_intensity, - .set_brightness = corgibl_set_intensity, + .update_status = corgibl_set_intensity, }; -static struct backlight_device *corgi_backlight_device; - static int __init corgibl_probe(struct platform_device *pdev) { struct corgibl_machinfo *machinfo = pdev->dev.platform_data; @@ -156,8 +130,9 @@ static int __init corgibl_probe(struct platform_device *pdev) if (IS_ERR (corgi_backlight_device)) return PTR_ERR (corgi_backlight_device); - corgibl_set_intensity(NULL, CORGI_DEFAULT_INTENSITY); - corgibl_limit_intensity(0); + corgibl_data.power = FB_BLANK_UNBLANK; + corgibl_data.brightness = CORGI_DEFAULT_INTENSITY; + corgibl_send_intensity(corgi_backlight_device); printk("Corgi Backlight Driver Initialized.\n"); return 0; @@ -167,8 +142,6 @@ static int corgibl_remove(struct platform_device *dev) { backlight_device_unregister(corgi_backlight_device); - corgibl_set_intensity(NULL, 0); - printk("Corgi Backlight Driver Unloaded\n"); return 0; } |