diff options
Diffstat (limited to 'drivers/video/backlight/corgi_bl.c')
| -rw-r--r-- | drivers/video/backlight/corgi_bl.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/video/backlight/corgi_bl.c b/drivers/video/backlight/corgi_bl.c index f86213b4a8f..2ebbfd95145 100644 --- a/drivers/video/backlight/corgi_bl.c +++ b/drivers/video/backlight/corgi_bl.c @@ -1,7 +1,7 @@ /* - * Backlight Driver for Sharp Corgi + * Backlight Driver for Sharp Zaurus Handhelds (various models) * - * Copyright (c) 2004-2005 Richard Purdie + * Copyright (c) 2004-2006 Richard Purdie * * Based on Sharp's 2.4 Backlight Driver * @@ -15,21 +15,17 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/platform_device.h> -#include <linux/spinlock.h> +#include <linux/mutex.h> #include <linux/fb.h> #include <linux/backlight.h> - #include <asm/arch/sharpsl.h> #include <asm/hardware/sharpsl_pm.h> -#define CORGI_DEFAULT_INTENSITY 0x1f -#define CORGI_LIMIT_MASK 0x0b - static int corgibl_intensity; -static void (*corgibl_mach_set_intensity)(int intensity); -static spinlock_t bl_lock = SPIN_LOCK_UNLOCKED; +static DEFINE_MUTEX(bl_mutex); static struct backlight_properties corgibl_data; static struct backlight_device *corgi_backlight_device; +static struct corgibl_machinfo *bl_machinfo; static unsigned long corgibl_flags; #define CORGIBL_SUSPENDED 0x01 @@ -37,7 +33,6 @@ static unsigned long corgibl_flags; static int corgibl_send_intensity(struct backlight_device *bd) { - unsigned long flags; void (*corgi_kick_batt)(void); int intensity = bd->props->brightness; @@ -48,13 +43,11 @@ static int corgibl_send_intensity(struct backlight_device *bd) if (corgibl_flags & CORGIBL_SUSPENDED) intensity = 0; if (corgibl_flags & CORGIBL_BATTLOW) - intensity &= CORGI_LIMIT_MASK; - - spin_lock_irqsave(&bl_lock, flags); - - corgibl_mach_set_intensity(intensity); + intensity &= bl_machinfo->limit_mask; - spin_unlock_irqrestore(&bl_lock, flags); + mutex_lock(&bl_mutex); + bl_machinfo->set_bl_intensity(intensity); + mutex_unlock(&bl_mutex); corgibl_intensity = intensity; @@ -122,8 +115,10 @@ static int __init corgibl_probe(struct platform_device *pdev) { struct corgibl_machinfo *machinfo = pdev->dev.platform_data; + bl_machinfo = machinfo; corgibl_data.max_brightness = machinfo->max_intensity; - corgibl_mach_set_intensity = machinfo->set_bl_intensity; + if (!machinfo->limit_mask) + machinfo->limit_mask = -1; corgi_backlight_device = backlight_device_register ("corgi-bl", NULL, &corgibl_data); @@ -131,7 +126,7 @@ static int __init corgibl_probe(struct platform_device *pdev) return PTR_ERR (corgi_backlight_device); corgibl_data.power = FB_BLANK_UNBLANK; - corgibl_data.brightness = CORGI_DEFAULT_INTENSITY; + corgibl_data.brightness = machinfo->default_intensity; corgibl_send_intensity(corgi_backlight_device); printk("Corgi Backlight Driver Initialized.\n"); |