Merge branch 'wip-2.6.34' into old-private-masterarchived-private-master

1 files changed, 289 insertions, 64 deletions

diff --git a/drivers/platform/x86/dell-laptop.c b/drivers/platform/x86/dell-laptop.c
index 74909c4aaeea..661e3ac4d5b1 100644
--- a/drivers/platform/x86/dell-laptop.c
+++ b/drivers/platform/x86/dell-laptop.c
@@ -22,6 +22,9 @@
 #include <linux/rfkill.h>
 #include <linux/power_supply.h>
 #include <linux/acpi.h>
+#include <linux/mm.h>
+#include <linux/i8042.h>
+#include <linux/slab.h>
 #include "../../firmware/dcdbas.h"
 
 #define BRIGHTNESS_TOKEN 0x7d
@@ -58,6 +61,14 @@ static int da_command_code;
 static int da_num_tokens;
 static struct calling_interface_token *da_tokens;
 
+static struct platform_driver platform_driver = {
+        .driver = {
+                .name = "dell-laptop",
+                .owner = THIS_MODULE,
+        }
+};
+
+static struct platform_device *platform_device;
 static struct backlight_device *dell_backlight_device;
 static struct rfkill *wifi_rfkill;
 static struct rfkill *bluetooth_rfkill;
@@ -71,10 +82,74 @@ static const struct dmi_system_id __initdata dell_device_table[] = {
                         DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
                 },
         },
+        {
+                .ident = "Dell Computer Corporation",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
+                        DMI_MATCH(DMI_CHASSIS_TYPE, "8"),
+                },
+        },
         { }
 };
 
-static void parse_da_table(const struct dmi_header *dm)
+static struct dmi_system_id __devinitdata dell_blacklist[] = {
+        /* Supported by compal-laptop */
+        {
+                .ident = "Dell Mini 9",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910"),
+                },
+        },
+        {
+                .ident = "Dell Mini 10",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010"),
+                },
+        },
+        {
+                .ident = "Dell Mini 10v",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011"),
+                },
+        },
+        {
+                .ident = "Dell Inspiron 11z",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110"),
+                },
+        },
+        {
+                .ident = "Dell Mini 12",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210"),
+                },
+        },
+        {}
+};
+
+static struct calling_interface_buffer *buffer;
+static struct page *bufferpage;
+static DEFINE_MUTEX(buffer_mutex);
+
+static int hwswitch_state;
+
+static void get_buffer(void)
+{
+        mutex_lock(&buffer_mutex);
+        memset(buffer, 0, sizeof(struct calling_interface_buffer));
+}
+
+static void release_buffer(void)
+{
+        mutex_unlock(&buffer_mutex);
+}
+
+static void __init parse_da_table(const struct dmi_header *dm)
 {
         /* Final token is a terminator, so we don't want to copy it */
         int tokens = (dm->length-11)/sizeof(struct calling_interface_token)-1;
@@ -103,7 +178,7 @@ static void parse_da_table(const struct dmi_header *dm)
         da_num_tokens += tokens;
 }
 
-static void find_tokens(const struct dmi_header *dm, void *dummy)
+static void __init find_tokens(const struct dmi_header *dm, void *dummy)
 {
         switch (dm->type) {
         case 0xd4: /* Indexed IO */
@@ -152,6 +227,8 @@ dell_send_request(struct calling_interface_buffer *buffer, int class,
 /* Derived from information in DellWirelessCtl.cpp:
    Class 17, select 11 is radio control. It returns an array of 32-bit values.
 
+   Input byte 0 = 0: Wireless information
+
    result[0]: return code
    result[1]:
      Bit 0:      Hardware switch supported
@@ -172,33 +249,62 @@ dell_send_request(struct calling_interface_buffer *buffer, int class,
      Bits 20-31: Reserved
    result[2]: NVRAM size in bytes
    result[3]: NVRAM format version number
+
+   Input byte 0 = 2: Wireless switch configuration
+   result[0]: return code
+   result[1]:
+     Bit 0:      Wifi controlled by switch
+     Bit 1:      Bluetooth controlled by switch
+     Bit 2:      WWAN controlled by switch
+     Bits 3-6:   Reserved
+     Bit 7:      Wireless switch config locked
+     Bit 8:      Wifi locator enabled
+     Bits 9-14:  Reserved
+     Bit 15:     Wifi locator setting locked
+     Bits 16-31: Reserved
 */
 
 static int dell_rfkill_set(void *data, bool blocked)
 {
-        struct calling_interface_buffer buffer;
         int disable = blocked ? 1 : 0;
         unsigned long radio = (unsigned long)data;
+        int hwswitch_bit = (unsigned long)data - 1;
+        int ret = 0;
 
-        memset(&buffer, 0, sizeof(struct calling_interface_buffer));
-        buffer.input[0] = (1 | (radio<<8) | (disable << 16));
-        dell_send_request(&buffer, 17, 11);
+        get_buffer();
+        dell_send_request(buffer, 17, 11);
 
-        return 0;
+        /* If the hardware switch controls this radio, and the hardware
+           switch is disabled, don't allow changing the software state */
+        if ((hwswitch_state & BIT(hwswitch_bit)) &&
+            !(buffer->output[1] & BIT(16))) {
+                ret = -EINVAL;
+                goto out;
+        }
+
+        buffer->input[0] = (1 | (radio<<8) | (disable << 16));
+        dell_send_request(buffer, 17, 11);
+
+out:
+        release_buffer();
+        return ret;
 }
 
 static void dell_rfkill_query(struct rfkill *rfkill, void *data)
 {
-        struct calling_interface_buffer buffer;
         int status;
         int bit = (unsigned long)data + 16;
+        int hwswitch_bit = (unsigned long)data - 1;
 
-        memset(&buffer, 0, sizeof(struct calling_interface_buffer));
-        dell_send_request(&buffer, 17, 11);
-        status = buffer.output[1];
+        get_buffer();
+        dell_send_request(buffer, 17, 11);
+        status = buffer->output[1];
+        release_buffer();
 
-        if (status & BIT(bit))
-                rfkill_set_hw_state(rfkill, !!(status & BIT(16)));
+        rfkill_set_sw_state(rfkill, !!(status & BIT(bit)));
+
+        if (hwswitch_state & (BIT(hwswitch_bit)))
+                rfkill_set_hw_state(rfkill, !(status & BIT(16)));
 }
 
 static const struct rfkill_ops dell_rfkill_ops = {
@@ -206,18 +312,40 @@ static const struct rfkill_ops dell_rfkill_ops = {
         .query = dell_rfkill_query,
 };
 
-static int dell_setup_rfkill(void)
+static void dell_update_rfkill(struct work_struct *ignored)
+{
+        if (wifi_rfkill)
+                dell_rfkill_query(wifi_rfkill, (void *)1);
+        if (bluetooth_rfkill)
+                dell_rfkill_query(bluetooth_rfkill, (void *)2);
+        if (wwan_rfkill)
+                dell_rfkill_query(wwan_rfkill, (void *)3);
+}
+static DECLARE_DELAYED_WORK(dell_rfkill_work, dell_update_rfkill);
+
+
+static int __init dell_setup_rfkill(void)
 {
-        struct calling_interface_buffer buffer;
         int status;
         int ret;
 
-        memset(&buffer, 0, sizeof(struct calling_interface_buffer));
-        dell_send_request(&buffer, 17, 11);
-        status = buffer.output[1];
+        if (dmi_check_system(dell_blacklist)) {
+                printk(KERN_INFO "dell-laptop: Blacklisted hardware detected - "
+                                "not enabling rfkill\n");
+                return 0;
+        }
+
+        get_buffer();
+        dell_send_request(buffer, 17, 11);
+        status = buffer->output[1];
+        buffer->input[0] = 0x2;
+        dell_send_request(buffer, 17, 11);
+        hwswitch_state = buffer->output[1];
+        release_buffer();
 
         if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {
-                wifi_rfkill = rfkill_alloc("dell-wifi", NULL, RFKILL_TYPE_WLAN,
+                wifi_rfkill = rfkill_alloc("dell-wifi", &platform_device->dev,
+                                           RFKILL_TYPE_WLAN,
                                            &dell_rfkill_ops, (void *) 1);
                 if (!wifi_rfkill) {
                         ret = -ENOMEM;
@@ -229,7 +357,8 @@ static int dell_setup_rfkill(void)
         }
 
         if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) {
-                bluetooth_rfkill = rfkill_alloc("dell-bluetooth", NULL,
+                bluetooth_rfkill = rfkill_alloc("dell-bluetooth",
+                                                &platform_device->dev,
                                                 RFKILL_TYPE_BLUETOOTH,
                                                 &dell_rfkill_ops, (void *) 2);
                 if (!bluetooth_rfkill) {
@@ -242,7 +371,9 @@ static int dell_setup_rfkill(void)
         }
 
         if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) {
-                wwan_rfkill = rfkill_alloc("dell-wwan", NULL, RFKILL_TYPE_WWAN,
+                wwan_rfkill = rfkill_alloc("dell-wwan",
+                                           &platform_device->dev,
+                                           RFKILL_TYPE_WWAN,
                                            &dell_rfkill_ops, (void *) 3);
                 if (!wwan_rfkill) {
                         ret = -ENOMEM;
@@ -268,41 +399,67 @@ err_wifi:
         return ret;
 }
 
+static void dell_cleanup_rfkill(void)
+{
+        if (wifi_rfkill) {
+                rfkill_unregister(wifi_rfkill);
+                rfkill_destroy(wifi_rfkill);
+        }
+        if (bluetooth_rfkill) {
+                rfkill_unregister(bluetooth_rfkill);
+                rfkill_destroy(bluetooth_rfkill);
+        }
+        if (wwan_rfkill) {
+                rfkill_unregister(wwan_rfkill);
+                rfkill_destroy(wwan_rfkill);
+        }
+}
+
 static int dell_send_intensity(struct backlight_device *bd)
 {
-        struct calling_interface_buffer buffer;
+        int ret = 0;
 
-        memset(&buffer, 0, sizeof(struct calling_interface_buffer));
-        buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
-        buffer.input[1] = bd->props.brightness;
+        get_buffer();
+        buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN);
+        buffer->input[1] = bd->props.brightness;
 
-        if (buffer.input[0] == -1)
-                return -ENODEV;
+        if (buffer->input[0] == -1) {
+                ret = -ENODEV;
+                goto out;
+        }
 
         if (power_supply_is_system_supplied() > 0)
-                dell_send_request(&buffer, 1, 2);
+                dell_send_request(buffer, 1, 2);
         else
-                dell_send_request(&buffer, 1, 1);
+                dell_send_request(buffer, 1, 1);
 
+out:
+        release_buffer();
         return 0;
 }
 
 static int dell_get_intensity(struct backlight_device *bd)
 {
-        struct calling_interface_buffer buffer;
+        int ret = 0;
 
-        memset(&buffer, 0, sizeof(struct calling_interface_buffer));
-        buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
+        get_buffer();
+        buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN);
 
-        if (buffer.input[0] == -1)
-                return -ENODEV;
+        if (buffer->input[0] == -1) {
+                ret = -ENODEV;
+                goto out;
+        }
 
         if (power_supply_is_system_supplied() > 0)
-                dell_send_request(&buffer, 0, 2);
+                dell_send_request(buffer, 0, 2);
         else
-                dell_send_request(&buffer, 0, 1);
+                dell_send_request(buffer, 0, 1);
 
-        return buffer.output[1];
+out:
+        release_buffer();
+        if (ret)
+                return ret;
+        return buffer->output[1];
 }
 
 static struct backlight_ops dell_ops = {
@@ -310,9 +467,32 @@ static struct backlight_ops dell_ops = {
         .update_status  = dell_send_intensity,
 };
 
+bool dell_laptop_i8042_filter(unsigned char data, unsigned char str,
+                              struct serio *port)
+{
+        static bool extended;
+
+        if (str & 0x20)
+                return false;
+
+        if (unlikely(data == 0xe0)) {
+                extended = true;
+                return false;
+        } else if (unlikely(extended)) {
+                switch (data) {
+                case 0x8:
+                        schedule_delayed_work(&dell_rfkill_work,
+                                              round_jiffies_relative(HZ));
+                        break;
+                }
+                extended = false;
+        }
+
+        return false;
+}
+
 static int __init dell_init(void)
 {
-        struct calling_interface_buffer buffer;
         int max_intensity = 0;
         int ret;
 
@@ -326,11 +506,41 @@ static int __init dell_init(void)
                 return -ENODEV;
         }
 
+        ret = platform_driver_register(&platform_driver);
+        if (ret)
+                goto fail_platform_driver;
+        platform_device = platform_device_alloc("dell-laptop", -1);
+        if (!platform_device) {
+                ret = -ENOMEM;
+                goto fail_platform_device1;
+        }
+        ret = platform_device_add(platform_device);
+        if (ret)
+                goto fail_platform_device2;
+
+        /*
+         * Allocate buffer below 4GB for SMI data--only 32-bit physical addr
+         * is passed to SMI handler.
+         */
+        bufferpage = alloc_page(GFP_KERNEL | GFP_DMA32);
+
+        if (!bufferpage)
+                goto fail_buffer;
+        buffer = page_address(bufferpage);
+        mutex_init(&buffer_mutex);
+
         ret = dell_setup_rfkill();
 
         if (ret) {
                 printk(KERN_WARNING "dell-laptop: Unable to setup rfkill\n");
-                goto out;
+                goto fail_rfkill;
+        }
+
+        ret = i8042_install_filter(dell_laptop_i8042_filter);
+        if (ret) {
+                printk(KERN_WARNING
+                       "dell-laptop: Unable to install key filter\n");
+                goto fail_filter;
         }
 
 #ifdef CONFIG_ACPI
@@ -341,53 +551,67 @@ static int __init dell_init(void)
                 return 0;
 #endif
 
-        memset(&buffer, 0, sizeof(struct calling_interface_buffer));
-        buffer.input[0] = find_token_location(BRIGHTNESS_TOKEN);
-
-        if (buffer.input[0] != -1) {
-                dell_send_request(&buffer, 0, 2);
-                max_intensity = buffer.output[3];
+        get_buffer();
+        buffer->input[0] = find_token_location(BRIGHTNESS_TOKEN);
+        if (buffer->input[0] != -1) {
+                dell_send_request(buffer, 0, 2);
+                max_intensity = buffer->output[3];
         }
+        release_buffer();
 
         if (max_intensity) {
-                dell_backlight_device = backlight_device_register(
-                        "dell_backlight",
-                        NULL, NULL,
-                        &dell_ops);
+                struct backlight_properties props;
+                memset(&props, 0, sizeof(struct backlight_properties));
+                props.max_brightness = max_intensity;
+                dell_backlight_device = backlight_device_register("dell_backlight",
+                                                                  &platform_device->dev,
+                                                                  NULL,
+                                                                  &dell_ops,
+                                                                  &props);
 
                 if (IS_ERR(dell_backlight_device)) {
                         ret = PTR_ERR(dell_backlight_device);
                         dell_backlight_device = NULL;
-                        goto out;
+                        goto fail_backlight;
                 }
 
-                dell_backlight_device->props.max_brightness = max_intensity;
                 dell_backlight_device->props.brightness =
                         dell_get_intensity(dell_backlight_device);
                 backlight_update_status(dell_backlight_device);
         }
 
         return 0;
-out:
-        if (wifi_rfkill)
-                rfkill_unregister(wifi_rfkill);
-        if (bluetooth_rfkill)
-                rfkill_unregister(bluetooth_rfkill);
-        if (wwan_rfkill)
-                rfkill_unregister(wwan_rfkill);
+
+fail_backlight:
+        i8042_remove_filter(dell_laptop_i8042_filter);
+        cancel_delayed_work_sync(&dell_rfkill_work);
+fail_filter:
+        dell_cleanup_rfkill();
+fail_rfkill:
+        free_page((unsigned long)bufferpage);
+fail_buffer:
+        platform_device_del(platform_device);
+fail_platform_device2:
+        platform_device_put(platform_device);
+fail_platform_device1:
+        platform_driver_unregister(&platform_driver);
+fail_platform_driver:
         kfree(da_tokens);
         return ret;
 }
 
 static void __exit dell_exit(void)
 {
+        i8042_remove_filter(dell_laptop_i8042_filter);
+        cancel_delayed_work_sync(&dell_rfkill_work);
         backlight_device_unregister(dell_backlight_device);
-        if (wifi_rfkill)
-                rfkill_unregister(wifi_rfkill);
-        if (bluetooth_rfkill)
-                rfkill_unregister(bluetooth_rfkill);
-        if (wwan_rfkill)
-                rfkill_unregister(wwan_rfkill);
+        dell_cleanup_rfkill();
+        if (platform_device) {
+                platform_device_unregister(platform_device);
+                platform_driver_unregister(&platform_driver);
+        }
+        kfree(da_tokens);
+        free_page((unsigned long)buffer);
 }
 
 module_init(dell_init);
@@ -397,3 +621,4 @@ MODULE_AUTHOR("Matthew Garrett <mjg@redhat.com>");
 MODULE_DESCRIPTION("Dell laptop driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("dmi:*svnDellInc.:*:ct8:*");
+MODULE_ALIAS("dmi:*svnDellComputerCorporation.:*:ct8:*");