static struct backlight_device *mbp_backlight_device;
-static struct dmi_system_id __initdata mbp_device_table[] = {
+/* Structure to be passed to the DMI_MATCH function. */
+struct dmi_match_data {
+ /* I/O resource to allocate. */
+ unsigned long iostart;
+ unsigned long iolen;
+ /* Backlight operations structure. */
+ struct backlight_ops backlight_ops;
+};
+
+/* 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 MacBooks with Intel chipset.
+ */
+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",
+ intensity);
+
+ outb(0x04 | (intensity << 4), 0xb3);
+ outb(0xbf, 0xb2);
+ 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 "mbp_nvidia_bl: read brightness of %d\n",
+ intensity);
+
+ return intensity;
+}
+
+static const struct dmi_match_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,
+ }
+};
+
+/*
+ * Implementation for MacBooks with Nvidia chipset.
+ */
+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",
+ intensity);
+
+ outb(0x04 | (intensity << 4), 0x52f);
+ outb(0xbf, 0x52e);
+ 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 "mbp_nvidia_bl: read brightness of %d\n",
+ intensity);
+
+ return intensity;
+}
+
+static const struct dmi_match_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
+ }
+};
+
+/*
+ * DMI matching.
+ */
+static /* const */ struct dmi_match_data *driver_data;
+
+static int mbp_dmi_match(const struct dmi_system_id *id)
+{
+ driver_data = id->driver_data;
+
+ printk(KERN_INFO "mbp_nvidia_bl: %s detected\n", id->ident);
+ return 1;
+}
+
+static const struct dmi_system_id __initdata mbp_device_table[] = {
{
- .ident = "3,1",
- .matches = {
+ .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,
},
{
- .ident = "3,2",
- .matches = {
+ .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,
},
{
- .ident = "4,1",
- .matches = {
+ .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 = "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 = "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,
},
{ }
};
-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 = {
- .options = BL_CORE_SUSPENDRESUME,
- .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"))
+ if (!request_region(driver_data->iostart, driver_data->iolen,
+ "Macbook Pro backlight"))
return -ENXIO;
mbp_backlight_device = backlight_device_register("mbp_backlight",
- NULL, NULL,
- &mbp_ops);
+ NULL, NULL, &driver_data->backlight_ops);
if (IS_ERR(mbp_backlight_device)) {
- release_region(0xb2, 2);
+ release_region(driver_data->iostart, driver_data->iolen);
return PTR_ERR(mbp_backlight_device);
}
mbp_backlight_device->props.max_brightness = 15;
mbp_backlight_device->props.brightness =
- mbp_get_intensity(mbp_backlight_device);
+ driver_data->backlight_ops.get_brightness(mbp_backlight_device);
backlight_update_status(mbp_backlight_device);
return 0;
{
backlight_device_unregister(mbp_backlight_device);
- release_region(0xb2, 2);
+ release_region(driver_data->iostart, driver_data->iolen);
}
module_init(mbp_init);
projects / linux-2.6-omap-h63xx.git / blobdiff