From 2c0f5fb08e8ad59f396b1bda41ccd93cbb00a09f Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Fri, 31 Mar 2006 02:31:51 -0800 Subject: [PATCH] backlight: corgi_bl: Generalise to support other Sharp SL hardware Generalise the Corgi backlight driver by moving the default intensity and limit mask settings into the platform specific data structure. This enables the driver to support other Zaurus hardware, specifically the SL-6000x (Tosa) model. Also change the spinlock to a mutex (the spinlock is overkill). Signed-off-by: Richard Purdie Signed-off-by: Antonino Daplas Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/video/backlight/corgi_bl.c | 31 +++++++++++++------------------ 1 file changed, 13 insertions(+), 18 deletions(-) (limited to 'drivers/video/backlight/corgi_bl.c') diff --git a/drivers/video/backlight/corgi_bl.c b/drivers/video/backlight/corgi_bl.c index f86213b..2ebbfd9 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 #include #include -#include +#include #include #include - #include #include -#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"); -- cgit v1.1