/*
- * Backlight Driver for Nvidia 8600 in Macbook Pro
+ * Backlight Driver for Macbooks
*
* Copyright (c) Red Hat <mjg@redhat.com>
* Based on code from Pommed:
#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>
+#include <linux/pci.h>
+#include <linux/acpi.h>
-static struct backlight_device *mbp_backlight_device;
+static struct backlight_device *mb_backlight_device;
-/* Structure to be passed to the DMI_MATCH function. */
-struct dmi_match_data {
+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 "mb_backlight: "
+
/* Module parameters. */
static int debug;
module_param_named(debug, debug, int, 0644);
/*
* Implementation for MacBooks 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 "mbp_nvidia_bl: setting brightness to %d\n",
+ printk(KERN_DEBUG DRIVER "setting brightness to %d\n",
intensity);
- outb(0x04 | (intensity << 4), 0xb3);
- outb(0xbf, 0xb2);
+ intel_chipset_set_brightness(intensity);
return 0;
}
intensity = inb(0xb3) >> 4;
if (debug)
- printk(KERN_DEBUG "mbp_nvidia_bl: read brightness of %d\n",
+ printk(KERN_DEBUG DRIVER "read brightness of %d\n",
intensity);
return intensity;
}
-static const struct dmi_match_data intel_chipset_data = {
+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 MacBooks 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 "mbp_nvidia_bl: setting brightness to %d\n",
+ printk(KERN_DEBUG DRIVER "setting brightness to %d\n",
intensity);
- outb(0x04 | (intensity << 4), 0x52f);
- outb(0xbf, 0x52e);
+ nvidia_chipset_set_brightness(intensity);
return 0;
}
intensity = inb(0x52f) >> 4;
if (debug)
- printk(KERN_DEBUG "mbp_nvidia_bl: read brightness of %d\n",
+ printk(KERN_DEBUG DRIVER "read brightness of %d\n",
intensity);
return intensity;
}
-static const struct dmi_match_data nvidia_chipset_data = {
+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,
};
-/*
- * DMI matching.
- */
-static /* const */ struct dmi_match_data *driver_data;
-
-static int mbp_dmi_match(const struct dmi_system_id *id)
+static int __devinit mb_bl_add(struct acpi_device *dev)
{
- driver_data = id->driver_data;
+ struct backlight_properties props;
+ struct pci_dev *host;
- printk(KERN_INFO "mbp_nvidia_bl: %s detected\n", id->ident);
- return 1;
-}
+ host = pci_get_bus_and_slot(0, 0);
-static const struct dmi_system_id __initdata mbp_device_table[] = {
- {
- .callback = mbp_dmi_match,
- .ident = "MacBook 1,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Computer, Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBook1,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBook 2,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBook2,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBook 3,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBook3,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBook 4,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBook4,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBook 4,2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBook4,2"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 1,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 1,2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro1,2"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 2,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 2,2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 3,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 3,2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3,2"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 4,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro4,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookAir 1,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir1,1"),
- },
- .driver_data = (void *)&intel_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBook 5,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5,1"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBook 5,2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5,2"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBook 6,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBook6,1"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookAir 2,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir2,1"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 5,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,1"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 5,2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,2"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 5,3",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,3"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 5,4",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,4"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookPro 5,5",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,5"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookAir 3,1",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir3,1"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- {
- .callback = mbp_dmi_match,
- .ident = "MacBookAir 3,2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir3,2"),
- },
- .driver_data = (void *)&nvidia_chipset_data,
- },
- { }
-};
+ if (!host) {
+ printk(KERN_ERR DRIVER "unable to find PCI host\n");
+ return -ENODEV;
+ }
-static int __init mbp_init(void)
-{
- struct backlight_properties props;
- if (!dmi_check_system(mbp_device_table))
+ 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;
+ }
- if (!request_region(driver_data->iostart, driver_data->iolen,
- "Macbook Pro backlight"))
+ if (!request_region(hw_data->iostart, hw_data->iolen,
+ "Macbook backlight"))
return -ENXIO;
memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = 15;
- mbp_backlight_device = backlight_device_register("mbp_backlight", NULL,
- NULL,
- &driver_data->backlight_ops,
- &props);
- if (IS_ERR(mbp_backlight_device)) {
- release_region(driver_data->iostart, driver_data->iolen);
- return PTR_ERR(mbp_backlight_device);
+ mb_backlight_device = backlight_device_register("mb_backlight", NULL,
+ NULL, &hw_data->backlight_ops, &props);
+
+ if (IS_ERR(mb_backlight_device)) {
+ release_region(hw_data->iostart, hw_data->iolen);
+ return PTR_ERR(mb_backlight_device);
}
- mbp_backlight_device->props.brightness =
- driver_data->backlight_ops.get_brightness(mbp_backlight_device);
- backlight_update_status(mbp_backlight_device);
+ mb_backlight_device->props.brightness =
+ hw_data->backlight_ops.get_brightness(mb_backlight_device);
+ backlight_update_status(mb_backlight_device);
return 0;
}
-static void __exit mbp_exit(void)
+static int __devexit mb_bl_remove(struct acpi_device *dev, int type)
{
- backlight_device_unregister(mbp_backlight_device);
+ backlight_device_unregister(mb_backlight_device);
- release_region(driver_data->iostart, driver_data->iolen);
+ release_region(hw_data->iostart, hw_data->iolen);
+ hw_data = NULL;
+ return 0;
+}
+
+static const struct acpi_device_id mb_bl_ids[] = {
+ {"APP0002", 0},
+ {"", 0},
+};
+
+static struct acpi_driver mb_bl_driver = {
+ .name = "Macbook backlight",
+ .ids = mb_bl_ids,
+ .ops = {
+ .add = mb_bl_add,
+ .remove = mb_bl_remove,
+ },
+};
+
+static int __init mb_init(void)
+{
+ return acpi_bus_register_driver(&mb_bl_driver);
+}
+
+static void __exit mb_exit(void)
+{
+ acpi_bus_unregister_driver(&mb_bl_driver);
}
-module_init(mbp_init);
-module_exit(mbp_exit);
+module_init(mb_init);
+module_exit(mb_exit);
MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
-MODULE_DESCRIPTION("Nvidia-based Macbook Pro Backlight Driver");
+MODULE_DESCRIPTION("Macbook Backlight Driver");
MODULE_LICENSE("GPL");
-MODULE_DEVICE_TABLE(dmi, mbp_device_table);
+MODULE_DEVICE_TABLE(acpi, mb_bl_ids);
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff