diff options
Diffstat (limited to 'drivers/video/backlight/mbp_nvidia_bl.c')
| -rw-r--r-- | drivers/video/backlight/mbp_nvidia_bl.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/drivers/video/backlight/mbp_nvidia_bl.c b/drivers/video/backlight/mbp_nvidia_bl.c deleted file mode 100644 index 385cba40ea8..00000000000 --- a/drivers/video/backlight/mbp_nvidia_bl.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - * Backlight Driver for Nvidia 8600 in Macbook Pro - * - * Copyright (c) Red Hat <mjg@redhat.com> - * Based on code from Pommed: - * Copyright (C) 2006 Nicolas Boichat <nicolas @boichat.ch> - * Copyright (C) 2006 Felipe Alfaro Solana <felipe_alfaro @linuxmail.org> - * Copyright (C) 2007 Julien BLACHE <jb@jblache.org> - * - * 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. - * - * This driver triggers SMIs which cause the firmware to change the - * backlight brightness. This is icky in many ways, but it's impractical to - * get at the firmware code in order to figure out what it's actually doing. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/backlight.h> -#include <linux/err.h> -#include <linux/dmi.h> -#include <linux/io.h> - -static struct backlight_device *mbp_backlight_device; - -static struct dmi_system_id __initdata mbp_device_table[] = { - { - .ident = "3,1", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"), - }, - }, - { - .ident = "3,2", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,2"), - }, - }, - { - .ident = "4,1", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."), - DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro4,1"), - }, - }, - { } -}; - -static int mbp_send_intensity(struct backlight_device *bd) -{ - int intensity = bd->props.brightness; - - outb(0x04 | (intensity << 4), 0xb3); - outb(0xbf, 0xb2); - - return 0; -} - -static int mbp_get_intensity(struct backlight_device *bd) -{ - outb(0x03, 0xb3); - outb(0xbf, 0xb2); - return inb(0xb3) >> 4; -} - -static struct backlight_ops mbp_ops = { - .get_brightness = mbp_get_intensity, - .update_status = mbp_send_intensity, -}; - -static int __init mbp_init(void) -{ - if (!dmi_check_system(mbp_device_table)) - return -ENODEV; - - if (!request_region(0xb2, 2, "Macbook Pro backlight")) - return -ENXIO; - - mbp_backlight_device = backlight_device_register("mbp_backlight", - NULL, NULL, - &mbp_ops); - if (IS_ERR(mbp_backlight_device)) { - release_region(0xb2, 2); - return PTR_ERR(mbp_backlight_device); - } - - mbp_backlight_device->props.max_brightness = 15; - mbp_backlight_device->props.brightness = - mbp_get_intensity(mbp_backlight_device); - backlight_update_status(mbp_backlight_device); - - return 0; -} - -static void __exit mbp_exit(void) -{ - backlight_device_unregister(mbp_backlight_device); - - release_region(0xb2, 2); -} - -module_init(mbp_init); -module_exit(mbp_exit); - -MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>"); -MODULE_DESCRIPTION("Nvidia-based Macbook Pro Backlight Driver"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("svnAppleInc.:pnMacBookPro3,1"); -MODULE_ALIAS("svnAppleInc.:pnMacBookPro3,2"); -MODULE_ALIAS("svnAppleInc.:pnMacBookPro4,1"); |