/* * Backlight Driver for HP Jornada 680 * * Copyright (c) 2005 Andriy Skulysh * * Based on Sharp's Corgi Backlight Driver * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include #include #include #include #include #include #include #include #include #include #define HP680_MAX_INTENSITY 255 #define HP680_DEFAULT_INTENSITY 10 static int hp680bl_suspended; static int current_intensity; static DEFINE_SPINLOCK(bl_lock); static void hp680bl_send_intensity(struct backlight_device *bd) { unsigned long flags; u16 v; int intensity = bd->props.brightness; if (bd->props.power != FB_BLANK_UNBLANK) intensity = 0; if (bd->props.fb_blank != FB_BLANK_UNBLANK) intensity = 0; if (hp680bl_suspended) intensity = 0; spin_lock_irqsave(&bl_lock, flags); if (intensity && current_intensity == 0) { sh_dac_enable(DAC_LCD_BRIGHTNESS); v = inw(HD64461_GPBDR); v &= ~HD64461_GPBDR_LCDOFF; outw(v, HD64461_GPBDR); sh_dac_output(255-(u8)intensity, DAC_LCD_BRIGHTNESS); } else if (intensity == 0 && current_intensity != 0) { sh_dac_output(255-(u8)intensity, DAC_LCD_BRIGHTNESS); sh_dac_disable(DAC_LCD_BRIGHTNESS); v = inw(HD64461_GPBDR); v |= HD64461_GPBDR_LCDOFF; outw(v, HD64461_GPBDR); } else if (intensity) { sh_dac_output(255-(u8)intensity, DAC_LCD_BRIGHTNESS); } spin_unlock_irqrestore(&bl_lock, flags); current_intensity = intensity; } #ifdef CONFIG_PM_SLEEP static int hp680bl_suspend(struct device *dev) { struct backlight_device *bd = dev_get_drvdata(dev); hp680bl_suspended = 1; hp680bl_send_intensity(bd); return 0; } static int hp680bl_resume(struct device *dev) { struct backlight_device *bd = dev_get_drvdata(dev); hp680bl_suspended = 0; hp680bl_send_intensity(bd); return 0; } #endif static SIMPLE_DEV_PM_OPS(hp680bl_pm_ops, hp680bl_suspend, hp680bl_resume); static int hp680bl_set_intensity(struct backlight_device *bd) { hp680bl_send_intensity(bd); return 0; } static int hp680bl_get_intensity(struct backlight_device *bd) { return current_intensity; } static const struct backlight_ops hp680bl_ops = { .get_brightness = hp680bl_get_intensity, .update_status = hp680bl_set_intensity, }; static int hp680bl_probe(struct platform_device *pdev) { struct backlight_properties props; struct backlight_device *bd; memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = HP680_MAX_INTENSITY; bd = devm_backlight_device_register(&pdev->dev, "hp680-bl", &pdev->dev, NULL, &hp680bl_ops, &props); if (IS_ERR(bd)) return PTR_ERR(bd); platform_set_drvdata(pdev, bd); bd->props.brightness = HP680_DEFAULT_INTENSITY; hp680bl_send_intensity(bd); return 0; } static int hp680bl_remove(struct platform_device *pdev) { struct backlight_device *bd = platform_get_drvdata(pdev); bd->props.brightness = 0; bd->props.power = 0; hp680bl_send_intensity(bd); return 0; } static struct platform_driver hp680bl_driver = { .probe = hp680bl_probe, .remove = hp680bl_remove, .driver = { .name = "hp680-bl", .pm = &hp680bl_pm_ops, }, }; static struct platform_device *hp680bl_device; static int __init hp680bl_init(void) { int ret; ret = platform_driver_register(&hp680bl_driver); if (ret) return ret; hp680bl_device = platform_device_register_simple("hp680-bl", -1, NULL, 0); if (IS_ERR(hp680bl_device)) { platform_driver_unregister(&hp680bl_driver); return PTR_ERR(hp680bl_device); } return 0; } static void __exit hp680bl_exit(void) { platform_device_unregister(hp680bl_device); platform_driver_unregister(&hp680bl_driver); } module_init(hp680bl_init); module_exit(hp680bl_exit); MODULE_AUTHOR("Andriy Skulysh "); MODULE_DESCRIPTION("HP Jornada 680 Backlight Driver"); MODULE_LICENSE("GPL"); on value='1'>ignoremode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-01-27 12:36:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-01-27 12:36:39 -0800
commit2fb78e89405f4321b86274a0c24b30896dd50529 (patch)
tree4de241e242441b80bd3f0022fc546bb07374571f /net/ipv6/fib6_rules.c
parentdd3b9f25c867cb2507a45e436d6ede8eb08e7b05 (diff)
parentc14024dbb156c8392908aaa822097d27c6af8ec8 (diff)
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe: "A set of fixes for this series. This contains: - Set of fixes for the nvme target code - A revert of patch from this merge window, causing a regression with WRITE_SAME on iSCSI targets at least. - A fix for a use-after-free in the new O_DIRECT bdev code. - Two fixes for the xen-blkfront driver" * 'for-linus' of git://git.kernel.dk/linux-block: Revert "sd: remove __data_len hack for WRITE SAME" nvme-fc: use blk_rq_nr_phys_segments nvmet-rdma: Fix missing dma sync to nvme data structures nvmet: Call fatal_error from keep-alive timout expiration nvmet: cancel fatal error and flush async work before free controller nvmet: delete controllers deletion upon subsystem release nvmet_fc: correct logic in disconnect queue LS handling block: fix use after free in __blkdev_direct_IO xen-blkfront: correct maximum segment accounting xen-blkfront: feature flags handling adjustments
Diffstat (limited to 'net/ipv6/fib6_rules.c')