diff options
Diffstat (limited to 'drivers/video/backlight/corgi_bl.c')
| -rw-r--r-- | drivers/video/backlight/corgi_bl.c | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/drivers/video/backlight/corgi_bl.c b/drivers/video/backlight/corgi_bl.c deleted file mode 100644 index d0aaf450e8c..00000000000 --- a/drivers/video/backlight/corgi_bl.c +++ /dev/null @@ -1,201 +0,0 @@ -/* - * Backlight Driver for Sharp Corgi - * - * Copyright (c) 2004-2005 Richard Purdie - * - * Based on Sharp's 2.4 Backlight Driver - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/spinlock.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_powermode = FB_BLANK_UNBLANK; -static int current_intensity = 0; -static int corgibl_limit = 0; -static void (*corgibl_mach_set_intensity)(int intensity); -static spinlock_t bl_lock = SPIN_LOCK_UNLOCKED; -static struct backlight_properties corgibl_data; - -static void corgibl_send_intensity(int intensity) -{ - unsigned long flags; - void (*corgi_kick_batt)(void); - - if (corgibl_powermode != FB_BLANK_UNBLANK) { - intensity = 0; - } else { - if (corgibl_limit) - intensity &= CORGI_LIMIT_MASK; - } - - spin_lock_irqsave(&bl_lock, flags); - - corgibl_mach_set_intensity(intensity); - - spin_unlock_irqrestore(&bl_lock, flags); - - 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; - } -} - -#ifdef CONFIG_PM -static int corgibl_suspend(struct platform_device *dev, pm_message_t state) -{ - corgibl_blank(FB_BLANK_POWERDOWN); - return 0; -} - -static int corgibl_resume(struct platform_device *dev) -{ - corgibl_blank(FB_BLANK_UNBLANK); - return 0; -} -#else -#define corgibl_suspend NULL -#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) -{ - return corgibl_powermode; -} - -static int corgibl_set_intensity(struct backlight_device *bd, int intensity) -{ - if (intensity > corgibl_data.max_brightness) - intensity = corgibl_data.max_brightness; - corgibl_send_intensity(intensity); - current_intensity=intensity; - 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); -} -EXPORT_SYMBOL(corgibl_limit_intensity); - - -static struct backlight_properties corgibl_data = { - .owner = THIS_MODULE, - .get_power = corgibl_get_power, - .set_power = corgibl_set_power, - .get_brightness = corgibl_get_intensity, - .set_brightness = 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; - - corgibl_data.max_brightness = machinfo->max_intensity; - corgibl_mach_set_intensity = machinfo->set_bl_intensity; - - corgi_backlight_device = backlight_device_register ("corgi-bl", - NULL, &corgibl_data); - if (IS_ERR (corgi_backlight_device)) - return PTR_ERR (corgi_backlight_device); - - corgibl_set_intensity(NULL, CORGI_DEFAULT_INTENSITY); - corgibl_limit_intensity(0); - - printk("Corgi Backlight Driver Initialized.\n"); - return 0; -} - -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; -} - -static struct platform_driver corgibl_driver = { - .probe = corgibl_probe, - .remove = corgibl_remove, - .suspend = corgibl_suspend, - .resume = corgibl_resume, - .driver = { - .name = "corgi-bl", - }, -}; - -static int __init corgibl_init(void) -{ - return platform_driver_register(&corgibl_driver); -} - -static void __exit corgibl_exit(void) -{ - platform_driver_unregister(&corgibl_driver); -} - -module_init(corgibl_init); -module_exit(corgibl_exit); - -MODULE_AUTHOR("Richard Purdie <rpurdie@rpsys.net>"); -MODULE_DESCRIPTION("Corgi Backlight Driver"); -MODULE_LICENSE("GPLv2"); |