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Diffstat (limited to 'ANDROID_3.4.5/drivers/video/backlight/apple_bl.c')
-rw-r--r--ANDROID_3.4.5/drivers/video/backlight/apple_bl.c260
1 files changed, 0 insertions, 260 deletions
diff --git a/ANDROID_3.4.5/drivers/video/backlight/apple_bl.c b/ANDROID_3.4.5/drivers/video/backlight/apple_bl.c
deleted file mode 100644
index a523b255..00000000
--- a/ANDROID_3.4.5/drivers/video/backlight/apple_bl.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/*
- * Backlight Driver for Intel-based Apples
- *
- * 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/backlight.h>
-#include <linux/err.h>
-#include <linux/io.h>
-#include <linux/pci.h>
-#include <linux/acpi.h>
-#include <linux/atomic.h>
-
-static struct backlight_device *apple_backlight_device;
-
-struct hw_data {
- /* I/O resource to allocate. */
- unsigned long iostart;
- unsigned long iolen;
- /* Backlight operations structure. */
- const struct backlight_ops backlight_ops;
- void (*set_brightness)(int);
-};
-
-static const struct hw_data *hw_data;
-
-#define DRIVER "apple_backlight: "
-
-/* Module parameters. */
-static int debug;
-module_param_named(debug, debug, int, 0644);
-MODULE_PARM_DESC(debug, "Set to one to enable debugging messages.");
-
-/*
- * Implementation for machines with Intel chipset.
- */
-static void intel_chipset_set_brightness(int intensity)
-{
- outb(0x04 | (intensity << 4), 0xb3);
- outb(0xbf, 0xb2);
-}
-
-static int intel_chipset_send_intensity(struct backlight_device *bd)
-{
- int intensity = bd->props.brightness;
-
- if (debug)
- printk(KERN_DEBUG DRIVER "setting brightness to %d\n",
- intensity);
-
- intel_chipset_set_brightness(intensity);
- return 0;
-}
-
-static int intel_chipset_get_intensity(struct backlight_device *bd)
-{
- int intensity;
-
- outb(0x03, 0xb3);
- outb(0xbf, 0xb2);
- intensity = inb(0xb3) >> 4;
-
- if (debug)
- printk(KERN_DEBUG DRIVER "read brightness of %d\n",
- intensity);
-
- return intensity;
-}
-
-static const struct hw_data intel_chipset_data = {
- .iostart = 0xb2,
- .iolen = 2,
- .backlight_ops = {
- .options = BL_CORE_SUSPENDRESUME,
- .get_brightness = intel_chipset_get_intensity,
- .update_status = intel_chipset_send_intensity,
- },
- .set_brightness = intel_chipset_set_brightness,
-};
-
-/*
- * Implementation for machines with Nvidia chipset.
- */
-static void nvidia_chipset_set_brightness(int intensity)
-{
- outb(0x04 | (intensity << 4), 0x52f);
- outb(0xbf, 0x52e);
-}
-
-static int nvidia_chipset_send_intensity(struct backlight_device *bd)
-{
- int intensity = bd->props.brightness;
-
- if (debug)
- printk(KERN_DEBUG DRIVER "setting brightness to %d\n",
- intensity);
-
- nvidia_chipset_set_brightness(intensity);
- return 0;
-}
-
-static int nvidia_chipset_get_intensity(struct backlight_device *bd)
-{
- int intensity;
-
- outb(0x03, 0x52f);
- outb(0xbf, 0x52e);
- intensity = inb(0x52f) >> 4;
-
- if (debug)
- printk(KERN_DEBUG DRIVER "read brightness of %d\n",
- intensity);
-
- return intensity;
-}
-
-static const struct hw_data nvidia_chipset_data = {
- .iostart = 0x52e,
- .iolen = 2,
- .backlight_ops = {
- .options = BL_CORE_SUSPENDRESUME,
- .get_brightness = nvidia_chipset_get_intensity,
- .update_status = nvidia_chipset_send_intensity
- },
- .set_brightness = nvidia_chipset_set_brightness,
-};
-
-static int __devinit apple_bl_add(struct acpi_device *dev)
-{
- struct backlight_properties props;
- struct pci_dev *host;
- int intensity;
-
- host = pci_get_bus_and_slot(0, 0);
-
- if (!host) {
- printk(KERN_ERR DRIVER "unable to find PCI host\n");
- return -ENODEV;
- }
-
- if (host->vendor == PCI_VENDOR_ID_INTEL)
- hw_data = &intel_chipset_data;
- else if (host->vendor == PCI_VENDOR_ID_NVIDIA)
- hw_data = &nvidia_chipset_data;
-
- pci_dev_put(host);
-
- if (!hw_data) {
- printk(KERN_ERR DRIVER "unknown hardware\n");
- return -ENODEV;
- }
-
- /* Check that the hardware responds - this may not work under EFI */
-
- intensity = hw_data->backlight_ops.get_brightness(NULL);
-
- if (!intensity) {
- hw_data->set_brightness(1);
- if (!hw_data->backlight_ops.get_brightness(NULL))
- return -ENODEV;
-
- hw_data->set_brightness(0);
- }
-
- if (!request_region(hw_data->iostart, hw_data->iolen,
- "Apple backlight"))
- return -ENXIO;
-
- memset(&props, 0, sizeof(struct backlight_properties));
- props.type = BACKLIGHT_PLATFORM;
- props.max_brightness = 15;
- apple_backlight_device = backlight_device_register("apple_backlight",
- NULL, NULL, &hw_data->backlight_ops, &props);
-
- if (IS_ERR(apple_backlight_device)) {
- release_region(hw_data->iostart, hw_data->iolen);
- return PTR_ERR(apple_backlight_device);
- }
-
- apple_backlight_device->props.brightness =
- hw_data->backlight_ops.get_brightness(apple_backlight_device);
- backlight_update_status(apple_backlight_device);
-
- return 0;
-}
-
-static int __devexit apple_bl_remove(struct acpi_device *dev, int type)
-{
- backlight_device_unregister(apple_backlight_device);
-
- release_region(hw_data->iostart, hw_data->iolen);
- hw_data = NULL;
- return 0;
-}
-
-static const struct acpi_device_id apple_bl_ids[] = {
- {"APP0002", 0},
- {"", 0},
-};
-
-static struct acpi_driver apple_bl_driver = {
- .name = "Apple backlight",
- .ids = apple_bl_ids,
- .ops = {
- .add = apple_bl_add,
- .remove = apple_bl_remove,
- },
-};
-
-static atomic_t apple_bl_registered = ATOMIC_INIT(0);
-
-int apple_bl_register(void)
-{
- if (atomic_xchg(&apple_bl_registered, 1) == 0)
- return acpi_bus_register_driver(&apple_bl_driver);
-
- return 0;
-}
-EXPORT_SYMBOL_GPL(apple_bl_register);
-
-void apple_bl_unregister(void)
-{
- if (atomic_xchg(&apple_bl_registered, 0) == 1)
- acpi_bus_unregister_driver(&apple_bl_driver);
-}
-EXPORT_SYMBOL_GPL(apple_bl_unregister);
-
-static int __init apple_bl_init(void)
-{
- return apple_bl_register();
-}
-
-static void __exit apple_bl_exit(void)
-{
- apple_bl_unregister();
-}
-
-module_init(apple_bl_init);
-module_exit(apple_bl_exit);
-
-MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
-MODULE_DESCRIPTION("Apple Backlight Driver");
-MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(acpi, apple_bl_ids);
-MODULE_ALIAS("mbp_nvidia_bl");
generated by cgit (git 2.34.1) at 2025-01-08 05:41:31 +0000