/* * Backlight Driver for the KB3886 Backlight * * Copyright (c) 2007-2008 Claudio Nieder * * Based on corgi_bl.c by Richard Purdie and kb3886 driver by Robert Woerle * * 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 #include #include #include #include #include #include #include #include #define KB3886_PARENT 0x64 #define KB3886_IO 0x60 #define KB3886_ADC_DAC_PWM 0xC4 #define KB3886_PWM0_WRITE 0x81 #define KB3886_PWM0_READ 0x41 static DEFINE_MUTEX(bl_mutex); static void kb3886_bl_set_intensity(int intensity) { mutex_lock(&bl_mutex); intensity = intensity&0xff; outb(KB3886_ADC_DAC_PWM, KB3886_PARENT); usleep_range(10000, 11000); outb(KB3886_PWM0_WRITE, KB3886_IO); usleep_range(10000, 11000); outb(intensity, KB3886_IO); mutex_unlock(&bl_mutex); } struct kb3886bl_machinfo { int max_intensity; int default_intensity; int limit_mask; void (*set_bl_intensity)(int intensity); }; static struct kb3886bl_machinfo kb3886_bl_machinfo = { .max_intensity = 0xff, .default_intensity = 0xa0, .limit_mask = 0x7f, .set_bl_intensity = kb3886_bl_set_intensity, }; static struct platform_device kb3886bl_device = { .name = "kb3886-bl", .dev = { .platform_data = &kb3886_bl_machinfo, }, .id = -1, }; static struct platform_device *devices[] __initdata = { &kb3886bl_device, }; /* * Back to driver */ static int kb3886bl_intensity; static struct backlight_device *kb3886_backlight_device; static struct kb3886bl_machinfo *bl_machinfo; static unsigned long kb3886bl_flags; #define KB3886BL_SUSPENDED 0x01 static struct dmi_system_id kb3886bl_device_table[] __initdata = { { .ident = "Sahara Touch-iT", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SDV"), DMI_MATCH(DMI_PRODUCT_NAME, "iTouch T201"), }, }, { } }; static int kb3886bl_send_intensity(struct backlight_device *bd) { 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 (kb3886bl_flags & KB3886BL_SUSPENDED) intensity = 0; bl_machinfo->set_bl_intensity(intensity); kb3886bl_intensity = intensity; return 0; } #ifdef CONFIG_PM_SLEEP static int kb3886bl_suspend(struct device *dev) { struct backlight_device *bd = dev_get_drvdata(dev); kb3886bl_flags |= KB3886BL_SUSPENDED; backlight_update_status(bd); return 0; } static int kb3886bl_resume(struct device *dev) { struct backlight_device *bd = dev_get_drvdata(dev); kb3886bl_flags &= ~KB3886BL_SUSPENDED; backlight_update_status(bd); return 0; } #endif static SIMPLE_DEV_PM_OPS(kb3886bl_pm_ops, kb3886bl_suspend, kb3886bl_resume); static int kb3886bl_get_intensity(struct backlight_device *bd) { return kb3886bl_intensity; } static const struct backlight_ops kb3886bl_ops = { .get_brightness = kb3886bl_get_intensity, .update_status = kb3886bl_send_intensity, }; static int kb3886bl_probe(struct platform_device *pdev) { struct backlight_properties props; struct kb3886bl_machinfo *machinfo = dev_get_platdata(&pdev->dev); bl_machinfo = machinfo; if (!machinfo->limit_mask) machinfo->limit_mask = -1; memset(&props, 0, sizeof(struct backlight_properties)); props.type = BACKLIGHT_RAW; props.max_brightness = machinfo->max_intensity; kb3886_backlight_device = devm_backlight_device_register(&pdev->dev, "kb3886-bl", &pdev->dev, NULL, &kb3886bl_ops, &props); if (IS_ERR(kb3886_backlight_device)) return PTR_ERR(kb3886_backlight_device); platform_set_drvdata(pdev, kb3886_backlight_device); kb3886_backlight_device->props.power = FB_BLANK_UNBLANK; kb3886_backlight_device->props.brightness = machinfo->default_intensity; backlight_update_status(kb3886_backlight_device); return 0; } static struct platform_driver kb3886bl_driver = { .probe = kb3886bl_probe, .driver = { .name = "kb3886-bl", .pm = &kb3886bl_pm_ops, }, }; static int __init kb3886_init(void) { if (!dmi_check_system(kb3886bl_device_table)) return -ENODEV; platform_add_devices(devices, ARRAY_SIZE(devices)); return platform_driver_register(&kb3886bl_driver); } static void __exit kb3886_exit(void) { platform_driver_unregister(&kb3886bl_driver); } module_init(kb3886_init); module_exit(kb3886_exit); MODULE_AUTHOR("Claudio Nieder "); MODULE_DESCRIPTION("Tabletkiosk Sahara Touch-iT Backlight Driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("dmi:*:svnSDV:pniTouchT201:*"); tr>authorRuslan Ruslichenko <rruslich@cisco.com>2017-01-17 16:13:52 +0200 committerThomas Gleixner <tglx@linutronix.de>2017-01-18 15:37:28 +0100 commit020eb3daaba2857b32c4cf4c82f503d6a00a67de (patch) tree329a05b424d783db675a4c711bd7633575e8181b /include/trace/events/vmscan.h parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
x86/ioapic: Restore IO-APIC irq_chip retrigger callback
commit d32932d02e18 removed the irq_retrigger callback from the IO-APIC chip and did not add it to the new IO-APIC-IR irq chip. Unfortunately the software resend fallback is not enabled on X86, so edge interrupts which are received during the lazy disabled state of the interrupt line are not retriggered and therefor lost. Restore the callbacks. [ tglx: Massaged changelog ] Fixes: d32932d02e18 ("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces") Signed-off-by: Ruslan Ruslichenko <rruslich@cisco.com> Cc: xe-linux-external@cisco.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484662432-13580-1-git-send-email-rruslich@cisco.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/trace/events/vmscan.h')