From b4f9fe12157a33351d0df78e925dcacd13252783 Mon Sep 17 00:00:00 2001
From: Len Brown <len.brown@intel.com>
Date: Thu, 11 Dec 2008 14:37:26 -0500
Subject: ACPI: move wmi, asus_acpi, toshiba_acpi to drivers/platform/x86
These are platform specific drivers that happen to use ACPI,
while drivers/acpi/ is for code that implements ACPI itself.
Signed-off-by: Len Brown <len.brown@intel.com>
---
drivers/platform/x86/Kconfig | 85 ++
drivers/platform/x86/Makefile | 3 +
drivers/platform/x86/asus_acpi.c | 1460 +++++++++++++++++++++++++++++++++++
drivers/platform/x86/toshiba_acpi.c | 863 +++++++++++++++++++++
drivers/platform/x86/wmi.c | 747 ++++++++++++++++++
5 files changed, 3158 insertions(+)
create mode 100644 drivers/platform/x86/asus_acpi.c
create mode 100644 drivers/platform/x86/toshiba_acpi.c
create mode 100644 drivers/platform/x86/wmi.c
(limited to 'drivers/platform/x86')
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 0a9a5b9..31f3ce2 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -287,4 +287,89 @@ config EEEPC_LAPTOP
If you have an Eee PC laptop, say Y or M here.
+
+config ACPI_WMI
+ tristate "WMI (EXPERIMENTAL)"
+ depends on ACPI
+ depends on EXPERIMENTAL
+ help
+ This driver adds support for the ACPI-WMI (Windows Management
+ Instrumentation) mapper device (PNP0C14) found on some systems.
+
+ ACPI-WMI is a proprietary extension to ACPI to expose parts of the
+ ACPI firmware to userspace - this is done through various vendor
+ defined methods and data blocks in a PNP0C14 device, which are then
+ made available for userspace to call.
+
+ The implementation of this in Linux currently only exposes this to
+ other kernel space drivers.
+
+ This driver is a required dependency to build the firmware specific
+ drivers needed on many machines, including Acer and HP laptops.
+
+ It is safe to enable this driver even if your DSDT doesn't define
+ any ACPI-WMI devices.
+
+config ACPI_ASUS
+ tristate "ASUS/Medion Laptop Extras"
+ depends on ACPI
+ select BACKLIGHT_CLASS_DEVICE
+ ---help---
+ This driver provides support for extra features of ACPI-compatible
+ ASUS laptops. As some of Medion laptops are made by ASUS, it may also
+ support some Medion laptops (such as 9675 for example). It makes all
+ the extra buttons generate standard ACPI events that go through
+ /proc/acpi/events, and (on some models) adds support for changing the
+ display brightness and output, switching the LCD backlight on and off,
+ and most importantly, allows you to blink those fancy LEDs intended
+ for reporting mail and wireless status.
+
+ Note: display switching code is currently considered EXPERIMENTAL,
+ toying with these values may even lock your machine.
+
+ All settings are changed via /proc/acpi/asus directory entries. Owner
+ and group for these entries can be set with asus_uid and asus_gid
+ parameters.
+
+ More information and a userspace daemon for handling the extra buttons
+ at <http://sourceforge.net/projects/acpi4asus/>.
+
+ If you have an ACPI-compatible ASUS laptop, say Y or M here. This
+ driver is still under development, so if your laptop is unsupported or
+ something works not quite as expected, please use the mailing list
+ available on the above page (acpi4asus-user@lists.sourceforge.net).
+
+ NOTE: This driver is deprecated and will probably be removed soon,
+ use asus-laptop instead.
+
+config ACPI_TOSHIBA
+ tristate "Toshiba Laptop Extras"
+ depends on ACPI
+ depends on INPUT
+ select INPUT_POLLDEV
+ select NET
+ select RFKILL
+ select BACKLIGHT_CLASS_DEVICE
+ ---help---
+ This driver adds support for access to certain system settings
+ on "legacy free" Toshiba laptops. These laptops can be recognized by
+ their lack of a BIOS setup menu and APM support.
+
+ On these machines, all system configuration is handled through the
+ ACPI. This driver is required for access to controls not covered
+ by the general ACPI drivers, such as LCD brightness, video output,
+ etc.
+
+ This driver differs from the non-ACPI Toshiba laptop driver (located
+ under "Processor type and features") in several aspects.
+ Configuration is accessed by reading and writing text files in the
+ /proc tree instead of by program interface to /dev. Furthermore, no
+ power management functions are exposed, as those are handled by the
+ general ACPI drivers.
+
+ More information about this driver is available at
+ <http://memebeam.org/toys/ToshibaAcpiDriver>.
+
+ If you have a legacy free Toshiba laptop (such as the Libretto L1
+ series), say Y.
endif # X86_PLATFORM_DEVICES
diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile
index 4d26b1b..1e9de2a 100644
--- a/drivers/platform/x86/Makefile
+++ b/drivers/platform/x86/Makefile
@@ -14,3 +14,6 @@ obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o
obj-$(CONFIG_FUJITSU_LAPTOP) += fujitsu-laptop.o
obj-$(CONFIG_PANASONIC_LAPTOP) += panasonic-laptop.o
obj-$(CONFIG_INTEL_MENLOW) += intel_menlow.o
+obj-$(CONFIG_ACPI_WMI) += wmi.o
+obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o
+obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o
diff --git a/drivers/platform/x86/asus_acpi.c b/drivers/platform/x86/asus_acpi.c
new file mode 100644
index 0000000..1e74988
--- /dev/null
+++ b/drivers/platform/x86/asus_acpi.c
@@ -0,0 +1,1460 @@
+/*
+ * asus_acpi.c - Asus Laptop ACPI Extras
+ *
+ *
+ * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * The development page for this driver is located at
+ * http://sourceforge.net/projects/acpi4asus/
+ *
+ * Credits:
+ * Pontus Fuchs - Helper functions, cleanup
+ * Johann Wiesner - Small compile fixes
+ * John Belmonte - ACPI code for Toshiba laptop was a good starting point.
+ * �ic Burghard - LED display support for W1N
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/backlight.h>
+#include <acpi/acpi_drivers.h>
+#include <acpi/acpi_bus.h>
+#include <asm/uaccess.h>
+
+#define ASUS_ACPI_VERSION "0.30"
+
+#define PROC_ASUS "asus" /* The directory */
+#define PROC_MLED "mled"
+#define PROC_WLED "wled"
+#define PROC_TLED "tled"
+#define PROC_BT "bluetooth"
+#define PROC_LEDD "ledd"
+#define PROC_INFO "info"
+#define PROC_LCD "lcd"
+#define PROC_BRN "brn"
+#define PROC_DISP "disp"
+
+#define ACPI_HOTK_NAME "Asus Laptop ACPI Extras Driver"
+#define ACPI_HOTK_CLASS "hotkey"
+#define ACPI_HOTK_DEVICE_NAME "Hotkey"
+
+/*
+ * Some events we use, same for all Asus
+ */
+#define BR_UP 0x10
+#define BR_DOWN 0x20
+
+/*
+ * Flags for hotk status
+ */
+#define MLED_ON 0x01 /* Mail LED */
+#define WLED_ON 0x02 /* Wireless LED */
+#define TLED_ON 0x04 /* Touchpad LED */
+#define BT_ON 0x08 /* Internal Bluetooth */
+
+MODULE_AUTHOR("Julien Lerouge, Karol Kozimor");
+MODULE_DESCRIPTION(ACPI_HOTK_NAME);
+MODULE_LICENSE("GPL");
+
+static uid_t asus_uid;
+static gid_t asus_gid;
+module_param(asus_uid, uint, 0);
+MODULE_PARM_DESC(asus_uid, "UID for entries in /proc/acpi/asus");
+module_param(asus_gid, uint, 0);
+MODULE_PARM_DESC(asus_gid, "GID for entries in /proc/acpi/asus");
+
+/* For each model, all features implemented,
+ * those marked with R are relative to HOTK, A for absolute */
+struct model_data {
+ char *name; /* name of the laptop________________A */
+ char *mt_mled; /* method to handle mled_____________R */
+ char *mled_status; /* node to handle mled reading_______A */
+ char *mt_wled; /* method to handle wled_____________R */
+ char *wled_status; /* node to handle wled reading_______A */
+ char *mt_tled; /* method to handle tled_____________R */
+ char *tled_status; /* node to handle tled reading_______A */
+ char *mt_ledd; /* method to handle LED display______R */
+ char *mt_bt_switch; /* method to switch Bluetooth on/off_R */
+ char *bt_status; /* no model currently supports this__? */
+ char *mt_lcd_switch; /* method to turn LCD on/off_________A */
+ char *lcd_status; /* node to read LCD panel state______A */
+ char *brightness_up; /* method to set brightness up_______A */
+ char *brightness_down; /* method to set brightness down ____A */
+ char *brightness_set; /* method to set absolute brightness_R */
+ char *brightness_get; /* method to get absolute brightness_R */
+ char *brightness_status;/* node to get brightness____________A */
+ char *display_set; /* method to set video output________R */
+ char *display_get; /* method to get video output________R */
+};
+
+/*
+ * This is the main structure, we can use it to store anything interesting
+ * about the hotk device
+ */
+struct asus_hotk {
+ struct acpi_device *device; /* the device we are in */
+ acpi_handle handle; /* the handle of the hotk device */
+ char status; /* status of the hotk, for LEDs */
+ u32 ledd_status; /* status of the LED display */
+ struct model_data *methods; /* methods available on the laptop */
+ u8 brightness; /* brightness level */
+ enum {
+ A1x = 0, /* A1340D, A1300F */
+ A2x, /* A2500H */
+ A4G, /* A4700G */
+ D1x, /* D1 */
+ L2D, /* L2000D */
+ L3C, /* L3800C */
+ L3D, /* L3400D */
+ L3H, /* L3H, L2000E, L5D */
+ L4R, /* L4500R */
+ L5x, /* L5800C */
+ L8L, /* L8400L */
+ M1A, /* M1300A */
+ M2E, /* M2400E, L4400L */
+ M6N, /* M6800N, W3400N */
+ M6R, /* M6700R, A3000G */
+ P30, /* Samsung P30 */
+ S1x, /* S1300A, but also L1400B and M2400A (L84F) */
+ S2x, /* S200 (J1 reported), Victor MP-XP7210 */
+ W1N, /* W1000N */
+ W5A, /* W5A */
+ W3V, /* W3030V */
+ xxN, /* M2400N, M3700N, M5200N, M6800N,
+ S1300N, S5200N*/
+ A4S, /* Z81sp */
+ F3Sa, /* (Centrino) */
+ END_MODEL
+ } model; /* Models currently supported */
+ u16 event_count[128]; /* Count for each event TODO make this better */
+};
+
+/* Here we go */
+#define A1x_PREFIX "\\_SB.PCI0.ISA.EC0."
+#define L3C_PREFIX "\\_SB.PCI0.PX40.ECD0."
+#define M1A_PREFIX "\\_SB.PCI0.PX40.EC0."
+#define P30_PREFIX "\\_SB.PCI0.LPCB.EC0."
+#define S1x_PREFIX "\\_SB.PCI0.PX40."
+#define S2x_PREFIX A1x_PREFIX
+#define xxN_PREFIX "\\_SB.PCI0.SBRG.EC0."
+
+static struct model_data model_conf[END_MODEL] = {
+ /*
+ * TODO I have seen a SWBX and AIBX method on some models, like L1400B,
+ * it seems to be a kind of switch, but what for ?
+ */
+
+ {
+ .name = "A1x",
+ .mt_mled = "MLED",
+ .mled_status = "\\MAIL",
+ .mt_lcd_switch = A1x_PREFIX "_Q10",
+ .lcd_status = "\\BKLI",
+ .brightness_up = A1x_PREFIX "_Q0E",
+ .brightness_down = A1x_PREFIX "_Q0F"},
+
+ {
+ .name = "A2x",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .wled_status = "\\SG66",
+ .mt_lcd_switch = "\\Q10",
+ .lcd_status = "\\BAOF",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "A4G",
+ .mt_mled = "MLED",
+/* WLED present, but not controlled by ACPI */
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\ADVG"},
+
+ {
+ .name = "D1x",
+ .mt_mled = "MLED",
+ .mt_lcd_switch = "\\Q0D",
+ .lcd_status = "\\GP11",
+ .brightness_up = "\\Q0C",
+ .brightness_down = "\\Q0B",
+ .brightness_status = "\\BLVL",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "L2D",
+ .mt_mled = "MLED",
+ .mled_status = "\\SGP6",
+ .mt_wled = "WLED",
+ .wled_status = "\\RCP3",
+ .mt_lcd_switch = "\\Q10",
+ .lcd_status = "\\SGP0",
+ .brightness_up = "\\Q0E",
+ .brightness_down = "\\Q0F",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "L3C",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = L3C_PREFIX "_Q10",
+ .lcd_status = "\\GL32",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\_SB.PCI0.PCI1.VGAC.NMAP"},
+
+ {
+ .name = "L3D",
+ .mt_mled = "MLED",
+ .mled_status = "\\MALD",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = "\\Q10",
+ .lcd_status = "\\BKLG",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "L3H",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = "EHK",
+ .lcd_status = "\\_SB.PCI0.PM.PBC",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "L4R",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .wled_status = "\\_SB.PCI0.SBRG.SG13",
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .lcd_status = "\\_SB.PCI0.SBSM.SEO4",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\_SB.PCI0.P0P1.VGA.GETD"},
+
+ {
+ .name = "L5x",
+ .mt_mled = "MLED",
+/* WLED present, but not controlled by ACPI */
+ .mt_tled = "TLED",
+ .mt_lcd_switch = "\\Q0D",
+ .lcd_status = "\\BAOF",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "L8L"
+/* No features, but at least support the hotkeys */
+ },
+
+ {
+ .name = "M1A",
+ .mt_mled = "MLED",
+ .mt_lcd_switch = M1A_PREFIX "Q10",
+ .lcd_status = "\\PNOF",
+ .brightness_up = M1A_PREFIX "Q0E",
+ .brightness_down = M1A_PREFIX "Q0F",
+ .brightness_status = "\\BRIT",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "M2E",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = "\\Q10",
+ .lcd_status = "\\GP06",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "M6N",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .wled_status = "\\_SB.PCI0.SBRG.SG13",
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .lcd_status = "\\_SB.BKLT",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\SSTE"},
+
+ {
+ .name = "M6R",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .lcd_status = "\\_SB.PCI0.SBSM.SEO4",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\_SB.PCI0.P0P1.VGA.GETD"},
+
+ {
+ .name = "P30",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = P30_PREFIX "_Q0E",
+ .lcd_status = "\\BKLT",
+ .brightness_up = P30_PREFIX "_Q68",
+ .brightness_down = P30_PREFIX "_Q69",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\DNXT"},
+
+ {
+ .name = "S1x",
+ .mt_mled = "MLED",
+ .mled_status = "\\EMLE",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = S1x_PREFIX "Q10",
+ .lcd_status = "\\PNOF",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV"},
+
+ {
+ .name = "S2x",
+ .mt_mled = "MLED",
+ .mled_status = "\\MAIL",
+ .mt_lcd_switch = S2x_PREFIX "_Q10",
+ .lcd_status = "\\BKLI",
+ .brightness_up = S2x_PREFIX "_Q0B",
+ .brightness_down = S2x_PREFIX "_Q0A"},
+
+ {
+ .name = "W1N",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .mt_ledd = "SLCM",
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .lcd_status = "\\BKLT",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\ADVG"},
+
+ {
+ .name = "W5A",
+ .mt_bt_switch = "BLED",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\ADVG"},
+
+ {
+ .name = "W3V",
+ .mt_mled = "MLED",
+ .mt_wled = "WLED",
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .lcd_status = "\\BKLT",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\INFB"},
+
+ {
+ .name = "xxN",
+ .mt_mled = "MLED",
+/* WLED present, but not controlled by ACPI */
+ .mt_lcd_switch = xxN_PREFIX "_Q10",
+ .lcd_status = "\\BKLT",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .display_set = "SDSP",
+ .display_get = "\\ADVG"},
+
+ {
+ .name = "A4S",
+ .brightness_set = "SPLV",
+ .brightness_get = "GPLV",
+ .mt_bt_switch = "BLED",
+ .mt_wled = "WLED"
+ },
+
+ {
+ .name = "F3Sa",
+ .mt_bt_switch = "BLED",
+ .mt_wled = "WLED",
+ .mt_mled = "MLED",
+ .brightness_get = "GPLV",
+ .brightness_set = "SPLV",
+ .mt_lcd_switch = "\\_SB.PCI0.SBRG.EC0._Q10",
+ .lcd_status = "\\_SB.PCI0.SBRG.EC0.RPIN",
+ .display_get = "\\ADVG",
+ .display_set = "SDSP",
+ },
+
+};
+
+/* procdir we use */
+static struct proc_dir_entry *asus_proc_dir;
+
+static struct backlight_device *asus_backlight_device;
+
+/*
+ * This header is made available to allow proper configuration given model,
+ * revision number , ... this info cannot go in struct asus_hotk because it is
+ * available before the hotk
+ */
+static struct acpi_table_header *asus_info;
+
+/* The actual device the driver binds to */
+static struct asus_hotk *hotk;
+
+/*
+ * The hotkey driver and autoloading declaration
+ */
+static int asus_hotk_add(struct acpi_device *device);
+static int asus_hotk_remove(struct acpi_device *device, int type);
+static const struct acpi_device_id asus_device_ids[] = {
+ {"ATK0100", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, asus_device_ids);
+
+static struct acpi_driver asus_hotk_driver = {
+ .name = "asus_acpi",
+ .class = ACPI_HOTK_CLASS,
+ .ids = asus_device_ids,
+ .ops = {
+ .add = asus_hotk_add,
+ .remove = asus_hotk_remove,
+ },
+};
+
+/*
+ * This function evaluates an ACPI method, given an int as parameter, the
+ * method is searched within the scope of the handle, can be NULL. The output
+ * of the method is written is output, which can also be NULL
+ *
+ * returns 1 if write is successful, 0 else.
+ */
+static int write_acpi_int(acpi_handle handle, const char *method, int val,
+ struct acpi_buffer *output)
+{
+ struct acpi_object_list params; /* list of input parameters (int) */
+ union acpi_object in_obj; /* the only param we use */
+ acpi_status status;
+
+ params.count = 1;
+ params.pointer = &in_obj;
+ in_obj.type = ACPI_TYPE_INTEGER;
+ in_obj.integer.value = val;
+
+ status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
+ return (status == AE_OK);
+}
+
+static int read_acpi_int(acpi_handle handle, const char *method, int *val)
+{
+ struct acpi_buffer output;
+ union acpi_object out_obj;
+ acpi_status status;
+
+ output.length = sizeof(out_obj);
+ output.pointer = &out_obj;
+
+ status = acpi_evaluate_object(handle, (char *)method, NULL, &output);
+ *val = out_obj.integer.value;
+ return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER);
+}
+
+/*
+ * We write our info in page, we begin at offset off and cannot write more
+ * than count bytes. We set eof to 1 if we handle those 2 values. We return the
+ * number of bytes written in page
+ */
+static int
+proc_read_info(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ int len = 0;
+ int temp;
+ char buf[16]; /* enough for all info */
+ /*
+ * We use the easy way, we don't care of off and count,
+ * so we don't set eof to 1
+ */
+
+ len += sprintf(page, ACPI_HOTK_NAME " " ASUS_ACPI_VERSION "\n");
+ len += sprintf(page + len, "Model reference : %s\n",
+ hotk->methods->name);
+ /*
+ * The SFUN method probably allows the original driver to get the list
+ * of features supported by a given model. For now, 0x0100 or 0x0800
+ * bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
+ * The significance of others is yet to be found.
+ */
+ if (read_acpi_int(hotk->handle, "SFUN", &temp))
+ len +=
+ sprintf(page + len, "SFUN value : 0x%04x\n", temp);
+ /*
+ * Another value for userspace: the ASYM method returns 0x02 for
+ * battery low and 0x04 for battery critical, its readings tend to be
+ * more accurate than those provided by _BST.
+ * Note: since not all the laptops provide this method, errors are
+ * silently ignored.
+ */
+ if (read_acpi_int(hotk->handle, "ASYM", &temp))
+ len +=
+ sprintf(page + len, "ASYM value : 0x%04x\n", temp);
+ if (asus_info) {
+ snprintf(buf, 16, "%d", asus_info->length);
+ len += sprintf(page + len, "DSDT length : %s\n", buf);
+ snprintf(buf, 16, "%d", asus_info->checksum);
+ len += sprintf(page + len, "DSDT checksum : %s\n", buf);
+ snprintf(buf, 16, "%d", asus_info->revision);
+ len += sprintf(page + len, "DSDT revision : %s\n", buf);
+ snprintf(buf, 7, "%s", asus_info->oem_id);
+ len += sprintf(page + len, "OEM id : %s\n", buf);
+ snprintf(buf, 9, "%s", asus_info->oem_table_id);
+ len += sprintf(page + len, "OEM table id : %s\n", buf);
+ snprintf(buf, 16, "%x", asus_info->oem_revision);
+ len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
+ snprintf(buf, 5, "%s", asus_info->asl_compiler_id);
+ len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
+ snprintf(buf, 16, "%x", asus_info->asl_compiler_revision);
+ len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
+ }
+
+ return len;
+}
+
+/*
+ * /proc handlers
+ * We write our info in page, we begin at offset off and cannot write more
+ * than count bytes. We set eof to 1 if we handle those 2 values. We return the
+ * number of bytes written in page
+ */
+
+/* Generic LED functions */
+static int read_led(const char *ledname, int ledmask)
+{
+ if (ledname) {
+ int led_status;
+
+ if (read_acpi_int(NULL, ledname, &led_status))
+ return led_status;
+ else
+ printk(KERN_WARNING "Asus ACPI: Error reading LED "
+ "status\n");
+ }
+ return (hotk->status & ledmask) ? 1 : 0;
+}
+
+static int parse_arg(const char __user *buf, unsigned long count, int *val)
+{
+ char s[32];
+ if (!count)
+ return 0;
+ if (count > 31)
+ return -EINVAL;
+ if (copy_from_user(s, buf, count))
+ return -EFAULT;
+ s[count] = 0;
+ if (sscanf(s, "%i", val) != 1)
+ return -EINVAL;
+ return count;
+}
+
+/* FIXME: kill extraneous args so it can be called independently */
+static int
+write_led(const char __user *buffer, unsigned long count,
+ char *ledname, int ledmask, int invert)
+{
+ int rv, value;
+ int led_out = 0;
+
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0)
+ led_out = value ? 1 : 0;
+
+ hotk->status =
+ (led_out) ? (hotk->status | ledmask) : (hotk->status & ~ledmask);
+
+ if (invert) /* invert target value */
+ led_out = !led_out;
+
+ if (!write_acpi_int(hotk->handle, ledname, led_out, NULL))
+ printk(KERN_WARNING "Asus ACPI: LED (%s) write failed\n",
+ ledname);
+
+ return rv;
+}
+
+/*
+ * Proc handlers for MLED
+ */
+static int
+proc_read_mled(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "%d\n",
+ read_led(hotk->methods->mled_status, MLED_ON));
+}
+
+static int
+proc_write_mled(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ return write_led(buffer, count, hotk->methods->mt_mled, MLED_ON, 1);
+}
+
+/*
+ * Proc handlers for LED display
+ */
+static int
+proc_read_ledd(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "0x%08x\n", hotk->ledd_status);
+}
+
+static int
+proc_write_ledd(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ int rv, value;
+
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0) {
+ if (!write_acpi_int
+ (hotk->handle, hotk->methods->mt_ledd, value, NULL))
+ printk(KERN_WARNING
+ "Asus ACPI: LED display write failed\n");
+ else
+ hotk->ledd_status = (u32) value;
+ }
+ return rv;
+}
+
+/*
+ * Proc handlers for WLED
+ */
+static int
+proc_read_wled(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "%d\n",
+ read_led(hotk->methods->wled_status, WLED_ON));
+}
+
+static int
+proc_write_wled(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ return write_led(buffer, count, hotk->methods->mt_wled, WLED_ON, 0);
+}
+
+/*
+ * Proc handlers for Bluetooth
+ */
+static int
+proc_read_bluetooth(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "%d\n", read_led(hotk->methods->bt_status, BT_ON));
+}
+
+static int
+proc_write_bluetooth(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ /* Note: mt_bt_switch controls both internal Bluetooth adapter's
+ presence and its LED */
+ return write_led(buffer, count, hotk->methods->mt_bt_switch, BT_ON, 0);
+}
+
+/*
+ * Proc handlers for TLED
+ */
+static int
+proc_read_tled(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "%d\n",
+ read_led(hotk->methods->tled_status, TLED_ON));
+}
+
+static int
+proc_write_tled(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ return write_led(buffer, count, hotk->methods->mt_tled, TLED_ON, 0);
+}
+
+static int get_lcd_state(void)
+{
+ int lcd = 0;
+
+ if (hotk->model == L3H) {
+ /* L3H and the like have to be handled differently */
+ acpi_status status = 0;
+ struct acpi_object_list input;
+ union acpi_object mt_params[2];
+ struct acpi_buffer output;
+ union acpi_object out_obj;
+
+ input.count = 2;
+ input.pointer = mt_params;
+ /* Note: the following values are partly guessed up, but
+ otherwise they seem to work */
+ mt_params[0].type = ACPI_TYPE_INTEGER;
+ mt_params[0].integer.value = 0x02;
+ mt_params[1].type = ACPI_TYPE_INTEGER;
+ mt_params[1].integer.value = 0x02;
+
+ output.length = sizeof(out_obj);
+ output.pointer = &out_obj;
+
+ status =
+ acpi_evaluate_object(NULL, hotk->methods->lcd_status,
+ &input, &output);
+ if (status != AE_OK)
+ return -1;
+ if (out_obj.type == ACPI_TYPE_INTEGER)
+ /* That's what the AML code does */
+ lcd = out_obj.integer.value >> 8;
+ } else if (hotk->model == F3Sa) {
+ unsigned long long tmp;
+ union acpi_object param;
+ struct acpi_object_list input;
+ acpi_status status;
+
+ /* Read pin 11 */
+ param.type = ACPI_TYPE_INTEGER;
+ param.integer.value = 0x11;
+ input.count = 1;
+ input.pointer = ¶m;
+
+ status = acpi_evaluate_integer(NULL, hotk->methods->lcd_status,
+ &input, &tmp);
+ if (status != AE_OK)
+ return -1;
+
+ lcd = tmp;
+ } else {
+ /* We don't have to check anything if we are here */
+ if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
+ printk(KERN_WARNING
+ "Asus ACPI: Error reading LCD status\n");
+
+ if (hotk->model == L2D)
+ lcd = ~lcd;
+ }
+
+ return (lcd & 1);
+}
+
+static int set_lcd_state(int value)
+{
+ int lcd = 0;
+ acpi_status status = 0;
+
+ lcd = value ? 1 : 0;
+ if (lcd != get_lcd_state()) {
+ /* switch */
+ if (hotk->model != L3H) {
+ status =
+ acpi_evaluate_object(NULL,
+ hotk->methods->mt_lcd_switch,
+ NULL, NULL);
+ } else {
+ /* L3H and the like must be handled differently */
+ if (!write_acpi_int
+ (hotk->handle, hotk->methods->mt_lcd_switch, 0x07,
+ NULL))
+ status = AE_ERROR;
+ /* L3H's AML executes EHK (0x07) upon Fn+F7 keypress,
+ the exact behaviour is simulated here */
+ }
+ if (ACPI_FAILURE(status))
+ printk(KERN_WARNING "Asus ACPI: Error switching LCD\n");
+ }
+ return 0;
+
+}
+
+static int
+proc_read_lcd(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "%d\n", get_lcd_state());
+}
+
+static int
+proc_write_lcd(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ int rv, value;
+
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0)
+ set_lcd_state(value);
+ return rv;
+}
+
+static int read_brightness(struct backlight_device *bd)
+{
+ int value;
+
+ if (hotk->methods->brightness_get) { /* SPLV/GPLV laptop */
+ if (!read_acpi_int(hotk->handle, hotk->methods->brightness_get,
+ &value))
+ printk(KERN_WARNING
+ "Asus ACPI: Error reading brightness\n");
+ } else if (hotk->methods->brightness_status) { /* For D1 for example */
+ if (!read_acpi_int(NULL, hotk->methods->brightness_status,
+ &value))
+ printk(KERN_WARNING
+ "Asus ACPI: Error reading brightness\n");
+ } else /* No GPLV method */
+ value = hotk->brightness;
+ return value;
+}
+
+/*
+ * Change the brightness level
+ */
+static int set_brightness(int value)
+{
+ acpi_status status = 0;
+ int ret = 0;
+
+ /* SPLV laptop */
+ if (hotk->methods->brightness_set) {
+ if (!write_acpi_int(hotk->handle, hotk->methods->brightness_set,
+ value, NULL))
+ printk(KERN_WARNING
+ "Asus ACPI: Error changing brightness\n");
+ ret = -EIO;
+ goto out;
+ }
+
+ /* No SPLV method if we are here, act as appropriate */
+ value -= read_brightness(NULL);
+ while (value != 0) {
+ status = acpi_evaluate_object(NULL, (value > 0) ?
+ hotk->methods->brightness_up :
+ hotk->methods->brightness_down,
+ NULL, NULL);
+ (value > 0) ? value-- : value++;
+ if (ACPI_FAILURE(status))
+ printk(KERN_WARNING
+ "Asus ACPI: Error changing brightness\n");
+ ret = -EIO;
+ }
+out:
+ return ret;
+}
+
+static int set_brightness_status(struct backlight_device *bd)
+{
+ return set_brightness(bd->props.brightness);
+}
+
+static int
+proc_read_brn(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ return sprintf(page, "%d\n", read_brightness(NULL));
+}
+
+static int
+proc_write_brn(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ int rv, value;
+
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0) {
+ value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
+ /* 0 <= value <= 15 */
+ set_brightness(value);
+ }
+ return rv;
+}
+
+static void set_display(int value)
+{
+ /* no sanity check needed for now */
+ if (!write_acpi_int(hotk->handle, hotk->methods->display_set,
+ value, NULL))
+ printk(KERN_WARNING "Asus ACPI: Error setting display\n");
+ return;
+}
+
+/*
+ * Now, *this* one could be more user-friendly, but so far, no-one has
+ * complained. The significance of bits is the same as in proc_write_disp()
+ */
+static int
+proc_read_disp(char *page, char **start, off_t off, int count, int *eof,
+ void *data)
+{
+ int value = 0;
+
+ if (!read_acpi_int(hotk->handle, hotk->methods->display_get, &value))
+ printk(KERN_WARNING
+ "Asus ACPI: Error reading display status\n");
+ value &= 0x07; /* needed for some models, shouldn't hurt others */
+ return sprintf(page, "%d\n", value);
+}
+
+/*
+ * Experimental support for display switching. As of now: 1 should activate
+ * the LCD output, 2 should do for CRT, and 4 for TV-Out. Any combination
+ * (bitwise) of these will suffice. I never actually tested 3 displays hooked
+ * up simultaneously, so be warned. See the acpi4asus README for more info.
+ */
+static int
+proc_write_disp(struct file *file, const char __user *buffer,
+ unsigned long count, void *data)
+{
+ int rv, value;
+
+ rv = parse_arg(buffer, count, &value);
+ if (rv > 0)
+ set_display(value);
+ return rv;
+}
+
+typedef int (proc_readfunc) (char *page, char **start, off_t off, int count,
+ int *eof, void *data);
+typedef int (proc_writefunc) (struct file *file, const char __user *buffer,
+ unsigned long count, void *data);
+
+static int
+asus_proc_add(char *name, proc_writefunc *writefunc,
+ proc_readfunc *readfunc, mode_t mode,
+ struct acpi_device *device)
+{
+ struct proc_dir_entry *proc =
+ create_proc_entry(name, mode, acpi_device_dir(device));
+ if (!proc) {
+ printk(KERN_WARNING " Unable to create %s fs entry\n", name);
+ return -1;
+ }
+ proc->write_proc = writefunc;
+ proc->read_proc = readfunc;
+ proc->data = acpi_driver_data(device);
+ proc->owner = THIS_MODULE;
+ proc->uid = asus_uid;
+ proc->gid = asus_gid;
+ return 0;
+}
+
+static int asus_hotk_add_fs(struct acpi_device *device)
+{
+ struct proc_dir_entry *proc;
+ mode_t mode;
+
+ /*
+ * If parameter uid or gid is not changed, keep the default setting for
+ * our proc entries (-rw-rw-rw-) else, it means we care about security,
+ * and then set to -rw-rw----
+ */
+
+ if ((asus_uid == 0) && (asus_gid == 0)) {
+ mode = S_IFREG | S_IRUGO | S_IWUGO;
+ } else {
+ mode = S_IFREG | S_IRUSR | S_IRGRP | S_IWUSR | S_IWGRP;
+ printk(KERN_WARNING " asus_uid and asus_gid parameters are "
+ "deprecated, use chown and chmod instead!\n");
+ }
+
+ acpi_device_dir(device) = asus_proc_dir;
+ if (!acpi_device_dir(device))
+ return -ENODEV;
+
+ proc = create_proc_entry(PROC_INFO, mode, acpi_device_dir(device));
+ if (proc) {
+ proc->read_proc = proc_read_info;
+ proc->data = acpi_driver_data(device);
+ proc->owner = THIS_MODULE;
+ proc->uid = asus_uid;
+ proc->gid = asus_gid;
+ } else {
+ printk(KERN_WARNING " Unable to create " PROC_INFO
+ " fs entry\n");
+ }
+
+ if (hotk->methods->mt_wled) {
+ asus_proc_add(PROC_WLED, &proc_write_wled, &proc_read_wled,
+ mode, device);
+ }
+
+ if (hotk->methods->mt_ledd) {
+ asus_proc_add(PROC_LEDD, &proc_write_ledd, &proc_read_ledd,
+ mode, device);
+ }
+
+ if (hotk->methods->mt_mled) {
+ asus_proc_add(PROC_MLED, &proc_write_mled, &proc_read_mled,
+ mode, device);
+ }
+
+ if (hotk->methods->mt_tled) {
+ asus_proc_add(PROC_TLED, &proc_write_tled, &proc_read_tled,
+ mode, device);
+ }
+
+ if (hotk->methods->mt_bt_switch) {
+ asus_proc_add(PROC_BT, &proc_write_bluetooth,
+ &proc_read_bluetooth, mode, device);
+ }
+
+ /*
+ * We need both read node and write method as LCD switch is also
+ * accessible from the keyboard
+ */
+ if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status) {
+ asus_proc_add(PROC_LCD, &proc_write_lcd, &proc_read_lcd, mode,
+ device);
+ }
+
+ if ((hotk->methods->brightness_up && hotk->methods->brightness_down) ||
+ (hotk->methods->brightness_get && hotk->methods->brightness_set)) {
+ asus_proc_add(PROC_BRN, &proc_write_brn, &proc_read_brn, mode,
+ device);
+ }
+
+ if (hotk->methods->display_set) {
+ asus_proc_add(PROC_DISP, &proc_write_disp, &proc_read_disp,
+ mode, device);
+ }
+
+ return 0;
+}
+
+static int asus_hotk_remove_fs(struct acpi_device *device)
+{
+ if (acpi_device_dir(device)) {
+ remove_proc_entry(PROC_INFO, acpi_device_dir(device));
+ if (hotk->methods->mt_wled)
+ remove_proc_entry(PROC_WLED, acpi_device_dir(device));
+ if (hotk->methods->mt_mled)
+ remove_proc_entry(PROC_MLED, acpi_device_dir(device));
+ if (hotk->methods->mt_tled)
+ remove_proc_entry(PROC_TLED, acpi_device_dir(device));
+ if (hotk->methods->mt_ledd)
+ remove_proc_entry(PROC_LEDD, acpi_device_dir(device));
+ if (hotk->methods->mt_bt_switch)
+ remove_proc_entry(PROC_BT, acpi_device_dir(device));
+ if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status)
+ remove_proc_entry(PROC_LCD, acpi_device_dir(device));
+ if ((hotk->methods->brightness_up
+ && hotk->methods->brightness_down)
+ || (hotk->methods->brightness_get
+ && hotk->methods->brightness_set))
+ remove_proc_entry(PROC_BRN, acpi_device_dir(device));
+ if (hotk->methods->display_set)
+ remove_proc_entry(PROC_DISP, acpi_device_dir(device));
+ }
+ return 0;
+}
+
+static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
+{
+ /* TODO Find a better way to handle events count. */
+ if (!hotk)
+ return;
+
+ if ((event & ~((u32) BR_UP)) < 16)
+ hotk->brightness = (event & ~((u32) BR_UP));
+ else if ((event & ~((u32) BR_DOWN)) < 16)
+ hotk->brightness = (event & ~((u32) BR_DOWN));
+
+ acpi_bus_generate_proc_event(hotk->device, event,
+ hotk->event_count[event % 128]++);
+
+ return;
+}
+
+/*
+ * Match the model string to the list of supported models. Return END_MODEL if
+ * no match or model is NULL.
+ */
+static int asus_model_match(char *model)
+{
+ if (model == NULL)
+ return END_MODEL;
+
+ if (strncmp(model, "L3D", 3) == 0)
+ return L3D;
+ else if (strncmp(model, "L2E", 3) == 0 ||
+ strncmp(model, "L3H", 3) == 0 || strncmp(model, "L5D", 3) == 0)
+ return L3H;
+ else if (strncmp(model, "L3", 2) == 0 || strncmp(model, "L2B", 3) == 0)
+ return L3C;
+ else if (strncmp(model, "L8L", 3) == 0)
+ return L8L;
+ else if (strncmp(model, "L4R", 3) == 0)
+ return L4R;
+ else if (strncmp(model, "M6N", 3) == 0 || strncmp(model, "W3N", 3) == 0)
+ return M6N;
+ else if (strncmp(model, "M6R", 3) == 0 || strncmp(model, "A3G", 3) == 0)
+ return M6R;
+ else if (strncmp(model, "M2N", 3) == 0 ||
+ strncmp(model, "M3N", 3) == 0 ||
+ strncmp(model, "M5N", 3) == 0 ||
+ strncmp(model, "M6N", 3) == 0 ||
+ strncmp(model, "S1N", 3) == 0 ||
+ strncmp(model, "S5N", 3) == 0 || strncmp(model, "W1N", 3) == 0)
+ return xxN;
+ else if (strncmp(model, "M1", 2) == 0)
+ return M1A;
+ else if (strncmp(model, "M2", 2) == 0 || strncmp(model, "L4E", 3) == 0)
+ return M2E;
+ else if (strncmp(model, "L2", 2) == 0)
+ return L2D;
+ else if (strncmp(model, "L8", 2) == 0)
+ return S1x;
+ else if (strncmp(model, "D1", 2) == 0)
+ return D1x;
+ else if (strncmp(model, "A1", 2) == 0)
+ return A1x;
+ else if (strncmp(model, "A2", 2) == 0)
+ return A2x;
+ else if (strncmp(model, "J1", 2) == 0)
+ return S2x;
+ else if (strncmp(model, "L5", 2) == 0)
+ return L5x;
+ else if (strncmp(model, "A4G", 3) == 0)
+ return A4G;
+ else if (strncmp(model, "W1N", 3) == 0)
+ return W1N;
+ else if (strncmp(model, "W3V", 3) == 0)
+ return W3V;
+ else if (strncmp(model, "W5A", 3) == 0)
+ return W5A;
+ else if (strncmp(model, "A4S", 3) == 0)
+ return A4S;
+ else if (strncmp(model, "F3Sa", 4) == 0)
+ return F3Sa;
+ else
+ return END_MODEL;
+}
+
+/*
+ * This function is used to initialize the hotk with right values. In this
+ * method, we can make all the detection we want, and modify the hotk struct
+ */
+static int asus_hotk_get_info(void)
+{
+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+ union acpi_object *model = NULL;
+ int bsts_result;
+ char *string = NULL;
+ acpi_status status;
+
+ /*
+ * Get DSDT headers early enough to allow for differentiating between
+ * models, but late enough to allow acpi_bus_register_driver() to fail
+ * before doing anything ACPI-specific. Should we encounter a machine,
+ * which needs special handling (i.e. its hotkey device has a different
+ * HID), this bit will be moved. A global variable asus_info contains
+ * the DSDT header.
+ */
+ status = acpi_get_table(ACPI_SIG_DSDT, 1, &asus_info);
+ if (ACPI_FAILURE(status))
+ printk(KERN_WARNING " Couldn't get the DSDT table header\n");
+
+ /* We have to write 0 on init this far for all ASUS models */
+ if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
+ printk(KERN_ERR " Hotkey initialization failed\n");
+ return -ENODEV;
+ }
+
+ /* This needs to be called for some laptops to init properly */
+ if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result))
+ printk(KERN_WARNING " Error calling BSTS\n");
+ else if (bsts_result)
+ printk(KERN_NOTICE " BSTS called, 0x%02x returned\n",
+ bsts_result);
+
+ /*
+ * Try to match the object returned by INIT to the specific model.
+ * Handle every possible object (or the lack of thereof) the DSDT
+ * writers might throw at us. When in trouble, we pass NULL to
+ * asus_model_match() and try something completely different.
+ */
+ if (buffer.pointer) {
+ model = buffer.pointer;
+ switch (model->type) {
+ case ACPI_TYPE_STRING:
+ string = model->string.pointer;
+ break;
+ case ACPI_TYPE_BUFFER:
+ string = model->buffer.pointer;
+ break;
+ default:
+ kfree(model);
+ model = NULL;
+ break;
+ }
+ }
+ hotk->model = asus_model_match(string);
+ if (hotk->model == END_MODEL) { /* match failed */
+ if (asus_info &&
+ strncmp(asus_info->oem_table_id, "ODEM", 4) == 0) {
+ hotk->model = P30;
+ printk(KERN_NOTICE
+ " Samsung P30 detected, supported\n");
+ } else {
+ hotk->model = M2E;
+ printk(KERN_NOTICE " unsupported model %s, trying "
+ "default values\n", string);
+ printk(KERN_NOTICE
+ " send /proc/acpi/dsdt to the developers\n");
+ kfree(model);
+ return -ENODEV;
+ }
+ hotk->methods = &model_conf[hotk->model];
+ return AE_OK;
+ }
+ hotk->methods = &model_conf[hotk->model];
+ printk(KERN_NOTICE " %s model detected, supported\n", string);
+
+ /* Sort of per-model blacklist */
+ if (strncmp(string, "L2B", 3) == 0)
+ hotk->methods->lcd_status = NULL;
+ /* L2B is similar enough to L3C to use its settings, with this only
+ exception */
+ else if (strncmp(string, "A3G", 3) == 0)
+ hotk->methods->lcd_status = "\\BLFG";
+ /* A3G is like M6R */
+ else if (strncmp(string, "S5N", 3) == 0 ||
+ strncmp(string, "M5N", 3) == 0 ||
+ strncmp(string, "W3N", 3) == 0)
+ hotk->methods->mt_mled = NULL;
+ /* S5N, M5N and W3N have no MLED */
+ else if (strncmp(string, "L5D", 3) == 0)
+ hotk->methods->mt_wled = NULL;
+ /* L5D's WLED is not controlled by ACPI */
+ else if (strncmp(string, "M2N", 3) == 0 ||
+ strncmp(string, "W3V", 3) == 0 ||
+ strncmp(string, "S1N", 3) == 0)
+ hotk->methods->mt_wled = "WLED";
+ /* M2N, S1N and W3V have a usable WLED */
+ else if (asus_info) {
+ if (strncmp(asus_info->oem_table_id, "L1", 2) == 0)
+ hotk->methods->mled_status = NULL;
+ /* S1300A reports L84F, but L1400B too, account for that */
+ }
+
+ kfree(model);
+
+ return AE_OK;
+}
+
+static int asus_hotk_check(void)
+{
+ int result = 0;
+
+ result = acpi_bus_get_status(hotk->device);
+ if (result)
+ return result;
+
+ if (hotk->device->status.present) {
+ result = asus_hotk_get_info();
+ } else {
+ printk(KERN_ERR " Hotkey device not present, aborting\n");
+ return -EINVAL;
+ }
+
+ return result;
+}
+
+static int asus_hotk_found;
+
+static int asus_hotk_add(struct acpi_device *device)
+{
+ acpi_status status = AE_OK;
+ int result;
+
+ if (!device)
+ return -EINVAL;
+
+ printk(KERN_NOTICE "Asus Laptop ACPI Extras version %s\n",
+ ASUS_ACPI_VERSION);
+
+ hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
+ if (!hotk)
+ return -ENOMEM;
+
+ hotk->handle = device->handle;
+ strcpy(acpi_device_name(device), ACPI_HOTK_DEVICE_NAME);
+ strcpy(acpi_device_class(device), ACPI_HOTK_CLASS);
+ device->driver_data = hotk;
+ hotk->device = device;
+
+ result = asus_hotk_check();
+ if (result)
+ goto end;
+
+ result = asus_hotk_add_fs(device);
+ if (result)
+ goto end;
+
+ /*
+ * We install the handler, it will receive the hotk in parameter, so, we
+ * could add other data to the hotk struct
+ */
+ status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
+ asus_hotk_notify, hotk);
+ if (ACPI_FAILURE(status))
+ printk(KERN_ERR " Error installing notify handler\n");
+
+ /* For laptops without GPLV: init the hotk->brightness value */
+ if ((!hotk->methods->brightness_get)
+ && (!hotk->methods->brightness_status)
+ && (hotk->methods->brightness_up && hotk->methods->brightness_down)) {
+ status =
+ acpi_evaluate_object(NULL, hotk->methods->brightness_down,
+ NULL, NULL);
+ if (ACPI_FAILURE(status))
+ printk(KERN_WARNING " Error changing brightness\n");
+ else {
+ status =
+ acpi_evaluate_object(NULL,
+ hotk->methods->brightness_up,
+ NULL, NULL);
+ if (ACPI_FAILURE(status))
+ printk(KERN_WARNING " Strange, error changing"
+ " brightness\n");
+ }
+ }
+
+ asus_hotk_found = 1;
+
+ /* LED display is off by default */
+ hotk->ledd_status = 0xFFF;
+
+end:
+ if (result)
+ kfree(hotk);
+
+ return result;
+}
+
+static int asus_hotk_remove(struct acpi_device *device, int type)
+{
+ acpi_status status = 0;
+
+ if (!device || !acpi_driver_data(device))
+ return -EINVAL;
+
+ status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
+ asus_hotk_notify);
+ if (ACPI_FAILURE(status))
+ printk(KERN_ERR "Asus ACPI: Error removing notify handler\n");
+
+ asus_hotk_remove_fs(device);
+
+ kfree(hotk);
+
+ return 0;
+}
+
+static struct backlight_ops asus_backlight_data = {
+ .get_brightness = read_brightness,
+ .update_status = set_brightness_status,
+};
+
+static void asus_acpi_exit(void)
+{
+ if (asus_backlight_device)
+ backlight_device_unregister(asus_backlight_device);
+
+ acpi_bus_unregister_driver(&asus_hotk_driver);
+ remove_proc_entry(PROC_ASUS, acpi_root_dir);
+
+ return;
+}
+
+static int __init asus_acpi_init(void)
+{
+ int result;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);
+ if (!asus_proc_dir) {
+ printk(KERN_ERR "Asus ACPI: Unable to create /proc entry\n");
+ return -ENODEV;
+ }
+ asus_proc_dir->owner = THIS_MODULE;
+
+ result = acpi_bus_register_driver(&asus_hotk_driver);
+ if (result < 0) {
+ remove_proc_entry(PROC_ASUS, acpi_root_dir);
+ return result;
+ }
+
+ /*
+ * This is a bit of a kludge. We only want this module loaded
+ * for ASUS systems, but there's currently no way to probe the
+ * ACPI namespace for ASUS HIDs. So we just return failure if
+ * we didn't find one, which will cause the module to be
+ * unloaded.
+ */
+ if (!asus_hotk_found) {
+ acpi_bus_unregister_driver(&asus_hotk_driver);
+ remove_proc_entry(PROC_ASUS, acpi_root_dir);
+ return -ENODEV;
+ }
+
+ asus_backlight_device = backlight_device_register("asus", NULL, NULL,
+ &asus_backlight_data);
+ if (IS_ERR(asus_backlight_device)) {
+ printk(KERN_ERR "Could not register asus backlight device\n");
+ asus_backlight_device = NULL;
+ asus_acpi_exit();
+ return -ENODEV;
+ }
+ asus_backlight_device->props.max_brightness = 15;
+
+ return 0;
+}
+
+module_init(asus_acpi_init);
+module_exit(asus_acpi_exit);
diff --git a/drivers/platform/x86/toshiba_acpi.c b/drivers/platform/x86/toshiba_acpi.c
new file mode 100644
index 0000000..40e60fc
--- /dev/null
+++ b/drivers/platform/x86/toshiba_acpi.c
@@ -0,0 +1,863 @@
+/*
+ * toshiba_acpi.c - Toshiba Laptop ACPI Extras
+ *
+ *
+ * Copyright (C) 2002-2004 John Belmonte
+ * Copyright (C) 2008 Philip Langdale
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * The devolpment page for this driver is located at
+ * http://memebeam.org/toys/ToshibaAcpiDriver.
+ *
+ * Credits:
+ * Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
+ * engineering the Windows drivers
+ * Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
+ * Rob Miller - TV out and hotkeys help
+ *
+ *
+ * TODO
+ *
+ */
+
+#define TOSHIBA_ACPI_VERSION "0.19"
+#define PROC_INTERFACE_VERSION 1
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <linux/backlight.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+#include <linux/input-polldev.h>
+
+#include <asm/uaccess.h>
+
+#include <acpi/acpi_drivers.h>
+
+MODULE_AUTHOR("John Belmonte");
+MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
+MODULE_LICENSE("GPL");
+
+#define MY_LOGPREFIX "toshiba_acpi: "
+#define MY_ERR KERN_ERR MY_LOGPREFIX
+#define MY_NOTICE KERN_NOTICE MY_LOGPREFIX
+#define MY_INFO KERN_INFO MY_LOGPREFIX
+
+/* Toshiba ACPI method paths */
+#define METHOD_LCD_BRIGHTNESS "\\_SB_.PCI0.VGA_.LCD_._BCM"
+#define METHOD_HCI_1 "\\_SB_.VALD.GHCI"
+#define METHOD_HCI_2 "\\_SB_.VALZ.GHCI"
+#define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
+
+/* Toshiba HCI interface definitions
+ *
+ * HCI is Toshiba's "Hardware Control Interface" which is supposed to
+ * be uniform across all their models. Ideally we would just call
+ * dedicated ACPI methods instead of using this primitive interface.
+ * However the ACPI methods seem to be incomplete in some areas (for
+ * example they allow setting, but not reading, the LCD brightness value),
+ * so this is still useful.
+ */
+
+#define HCI_WORDS 6
+
+/* operations */
+#define HCI_SET 0xff00
+#define HCI_GET 0xfe00
+
+/* return codes */
+#define HCI_SUCCESS 0x0000
+#define HCI_FAILURE 0x1000
+#define HCI_NOT_SUPPORTED 0x8000
+#define HCI_EMPTY 0x8c00
+
+/* registers */
+#define HCI_FAN 0x0004
+#define HCI_SYSTEM_EVENT 0x0016
+#define HCI_VIDEO_OUT 0x001c
+#define HCI_HOTKEY_EVENT 0x001e
+#define HCI_LCD_BRIGHTNESS 0x002a
+#define HCI_WIRELESS 0x0056
+
+/* field definitions */
+#define HCI_LCD_BRIGHTNESS_BITS 3
+#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
+#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
+#define HCI_VIDEO_OUT_LCD 0x1
+#define HCI_VIDEO_OUT_CRT 0x2
+#define HCI_VIDEO_OUT_TV 0x4
+#define HCI_WIRELESS_KILL_SWITCH 0x01
+#define HCI_WIRELESS_BT_PRESENT 0x0f
+#define HCI_WIRELESS_BT_ATTACH 0x40
+#define HCI_WIRELESS_BT_POWER 0x80
+
+static const struct acpi_device_id toshiba_device_ids[] = {
+ {"TOS6200", 0},
+ {"TOS6208", 0},
+ {"TOS1900", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
+
+/* utility
+ */
+
+static __inline__ void _set_bit(u32 * word, u32 mask, int value)
+{
+ *word = (*word & ~mask) | (mask * value);
+}
+
+/* acpi interface wrappers
+ */
+
+static int is_valid_acpi_path(const char *methodName)
+{
+ acpi_handle handle;
+ acpi_status status;
+
+ status = acpi_get_handle(NULL, (char *)methodName, &handle);
+ return !ACPI_FAILURE(status);
+}
+
+static int write_acpi_int(const char *methodName, int val)
+{
+ struct acpi_object_list params;
+ union acpi_object in_objs[1];
+ acpi_status status;
+
+ params.count = ARRAY_SIZE(in_objs);
+ params.pointer = in_objs;
+ in_objs[0].type = ACPI_TYPE_INTEGER;
+ in_objs[0].integer.value = val;
+
+ status = acpi_evaluate_object(NULL, (char *)methodName, ¶ms, NULL);
+ return (status == AE_OK);
+}
+
+#if 0
+static int read_acpi_int(const char *methodName, int *pVal)
+{
+ struct acpi_buffer results;
+ union acpi_object out_objs[1];
+ acpi_status status;
+
+ results.length = sizeof(out_objs);
+ results.pointer = out_objs;
+
+ status = acpi_evaluate_object(0, (char *)methodName, 0, &results);
+ *pVal = out_objs[0].integer.value;
+
+ return (status == AE_OK) && (out_objs[0].type == ACPI_TYPE_INTEGER);
+}
+#endif
+
+static const char *method_hci /*= 0*/ ;
+
+/* Perform a raw HCI call. Here we don't care about input or output buffer
+ * format.
+ */
+static acpi_status hci_raw(const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
+{
+ struct acpi_object_list params;
+ union acpi_object in_objs[HCI_WORDS];
+ struct acpi_buffer results;
+ union acpi_object out_objs[HCI_WORDS + 1];
+ acpi_status status;
+ int i;
+
+ params.count = HCI_WORDS;
+ params.pointer = in_objs;
+ for (i = 0; i < HCI_WORDS; ++i) {
+ in_objs[i].type = ACPI_TYPE_INTEGER;
+ in_objs[i].integer.value = in[i];
+ }
+
+ results.length = sizeof(out_objs);
+ results.pointer = out_objs;
+
+ status = acpi_evaluate_object(NULL, (char *)method_hci, ¶ms,
+ &results);
+ if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
+ for (i = 0; i < out_objs->package.count; ++i) {
+ out[i] = out_objs->package.elements[i].integer.value;
+ }
+ }
+
+ return status;
+}
+
+/* common hci tasks (get or set one or two value)
+ *
+ * In addition to the ACPI status, the HCI system returns a result which
+ * may be useful (such as "not supported").
+ */
+
+static acpi_status hci_write1(u32 reg, u32 in1, u32 * result)
+{
+ u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
+ u32 out[HCI_WORDS];
+ acpi_status status = hci_raw(in, out);
+ *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
+ return status;
+}
+
+static acpi_status hci_read1(u32 reg, u32 * out1, u32 * result)
+{
+ u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
+ u32 out[HCI_WORDS];
+ acpi_status status = hci_raw(in, out);
+ *out1 = out[2];
+ *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
+ return status;
+}
+
+static acpi_status hci_write2(u32 reg, u32 in1, u32 in2, u32 *result)
+{
+ u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
+ u32 out[HCI_WORDS];
+ acpi_status status = hci_raw(in, out);
+ *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
+ return status;
+}
+
+static acpi_status hci_read2(u32 reg, u32 *out1, u32 *out2, u32 *result)
+{
+ u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
+ u32 out[HCI_WORDS];
+ acpi_status status = hci_raw(in, out);
+ *out1 = out[2];
+ *out2 = out[3];
+ *result = (status == AE_OK) ? out[0] : HCI_FAILURE;
+ return status;
+}
+
+struct toshiba_acpi_dev {
+ struct platform_device *p_dev;
+ struct rfkill *rfk_dev;
+ struct input_polled_dev *poll_dev;
+
+ const char *bt_name;
+ const char *rfk_name;
+
+ bool last_rfk_state;
+
+ struct mutex mutex;
+};
+
+static struct toshiba_acpi_dev toshiba_acpi = {
+ .bt_name = "Toshiba Bluetooth",
+ .rfk_name = "Toshiba RFKill Switch",
+ .last_rfk_state = false,
+};
+
+/* Bluetooth rfkill handlers */
+
+static u32 hci_get_bt_present(bool *present)
+{
+ u32 hci_result;
+ u32 value, value2;
+
+ value = 0;
+ value2 = 0;
+ hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
+ if (hci_result == HCI_SUCCESS)
+ *present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
+
+ return hci_result;
+}
+
+static u32 hci_get_bt_on(bool *on)
+{
+ u32 hci_result;
+ u32 value, value2;
+
+ value = 0;
+ value2 = 0x0001;
+ hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
+ if (hci_result == HCI_SUCCESS)
+ *on = (value & HCI_WIRELESS_BT_POWER) &&
+ (value & HCI_WIRELESS_BT_ATTACH);
+
+ return hci_result;
+}
+
+static u32 hci_get_radio_state(bool *radio_state)
+{
+ u32 hci_result;
+ u32 value, value2;
+
+ value = 0;
+ value2 = 0x0001;
+ hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
+
+ *radio_state = value & HCI_WIRELESS_KILL_SWITCH;
+ return hci_result;
+}
+
+static int bt_rfkill_toggle_radio(void *data, enum rfkill_state state)
+{
+ u32 result1, result2;
+ u32 value;
+ bool radio_state;
+ struct toshiba_acpi_dev *dev = data;
+
+ value = (state == RFKILL_STATE_UNBLOCKED);
+
+ if (hci_get_radio_state(&radio_state) != HCI_SUCCESS)
+ return -EFAULT;
+
+ switch (state) {
+ case RFKILL_STATE_UNBLOCKED:
+ if (!radio_state)
+ return -EPERM;
+ break;
+ case RFKILL_STATE_SOFT_BLOCKED:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ mutex_lock(&dev->mutex);
+ hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
+ hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
+ mutex_unlock(&dev->mutex);
+
+ if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
+ return -EFAULT;
+
+ return 0;
+}
+
+static void bt_poll_rfkill(struct input_polled_dev *poll_dev)
+{
+ bool state_changed;
+ bool new_rfk_state;
+ bool value;
+ u32 hci_result;
+ struct toshiba_acpi_dev *dev = poll_dev->private;
+
+ hci_result = hci_get_radio_state(&value);
+ if (hci_result != HCI_SUCCESS)
+ return; /* Can't do anything useful */
+
+ new_rfk_state = value;
+
+ mutex_lock(&dev->mutex);
+ state_changed = new_rfk_state != dev->last_rfk_state;
+ dev->last_rfk_state = new_rfk_state;
+ mutex_unlock(&dev->mutex);
+
+ if (unlikely(state_changed)) {
+ rfkill_force_state(dev->rfk_dev,
+ new_rfk_state ?
+ RFKILL_STATE_SOFT_BLOCKED :
+ RFKILL_STATE_HARD_BLOCKED);
+ input_report_switch(poll_dev->input, SW_RFKILL_ALL,
+ new_rfk_state);
+ input_sync(poll_dev->input);
+ }
+}
+
+static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
+static struct backlight_device *toshiba_backlight_device;
+static int force_fan;
+static int last_key_event;
+static int key_event_valid;
+
+typedef struct _ProcItem {
+ const char *name;
+ char *(*read_func) (char *);
+ unsigned long (*write_func) (const char *, unsigned long);
+} ProcItem;
+
+/* proc file handlers
+ */
+
+static int
+dispatch_read(char *page, char **start, off_t off, int count, int *eof,
+ ProcItem * item)
+{
+ char *p = page;
+ int len;
+
+ if (off == 0)
+ p = item->read_func(p);
+
+ /* ISSUE: I don't understand this code */
+ len = (p - page);
+ if (len <= off + count)
+ *eof = 1;
+ *start = page + off;
+ len -= off;
+ if (len > count)
+ len = count;
+ if (len < 0)
+ len = 0;
+ return len;
+}
+
+static int
+dispatch_write(struct file *file, const char __user * buffer,
+ unsigned long count, ProcItem * item)
+{
+ int result;
+ char *tmp_buffer;
+
+ /* Arg buffer points to userspace memory, which can't be accessed
+ * directly. Since we're making a copy, zero-terminate the
+ * destination so that sscanf can be used on it safely.
+ */
+ tmp_buffer = kmalloc(count + 1, GFP_KERNEL);
+ if (!tmp_buffer)
+ return -ENOMEM;
+
+ if (copy_from_user(tmp_buffer, buffer, count)) {
+ result = -EFAULT;
+ } else {
+ tmp_buffer[count] = 0;
+ result = item->write_func(tmp_buffer, count);
+ }
+ kfree(tmp_buffer);
+ return result;
+}
+
+static int get_lcd(struct backlight_device *bd)
+{
+ u32 hci_result;
+ u32 value;
+
+ hci_read1(HCI_LCD_BRIGHTNESS, &value, &hci_result);
+ if (hci_result == HCI_SUCCESS) {
+ return (value >> HCI_LCD_BRIGHTNESS_SHIFT);
+ } else
+ return -EFAULT;
+}
+
+static char *read_lcd(char *p)
+{
+ int value = get_lcd(NULL);
+
+ if (value >= 0) {
+ p += sprintf(p, "brightness: %d\n", value);
+ p += sprintf(p, "brightness_levels: %d\n",
+ HCI_LCD_BRIGHTNESS_LEVELS);
+ } else {
+ printk(MY_ERR "Error reading LCD brightness\n");
+ }
+
+ return p;
+}
+
+static int set_lcd(int value)
+{
+ u32 hci_result;
+
+ value = value << HCI_LCD_BRIGHTNESS_SHIFT;
+ hci_write1(HCI_LCD_BRIGHTNESS, value, &hci_result);
+ if (hci_result != HCI_SUCCESS)
+ return -EFAULT;
+
+ return 0;
+}
+
+static int set_lcd_status(struct backlight_device *bd)
+{
+ return set_lcd(bd->props.brightness);
+}
+
+static unsigned long write_lcd(const char *buffer, unsigned long count)
+{
+ int value;
+ int ret;
+
+ if (sscanf(buffer, " brightness : %i", &value) == 1 &&
+ value >= 0 && value < HCI_LCD_BRIGHTNESS_LEVELS) {
+ ret = set_lcd(value);
+ if (ret == 0)
+ ret = count;
+ } else {
+ ret = -EINVAL;
+ }
+ return ret;
+}
+
+static char *read_video(char *p)
+{
+ u32 hci_result;
+ u32 value;
+
+ hci_read1(HCI_VIDEO_OUT, &value, &hci_result);
+ if (hci_result == HCI_SUCCESS) {
+ int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
+ int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
+ int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
+ p += sprintf(p, "lcd_out: %d\n", is_lcd);
+ p += sprintf(p, "crt_out: %d\n", is_crt);
+ p += sprintf(p, "tv_out: %d\n", is_tv);
+ } else {
+ printk(MY_ERR "Error reading video out status\n");
+ }
+
+ return p;
+}
+
+static unsigned long write_video(const char *buffer, unsigned long count)
+{
+ int value;
+ int remain = count;
+ int lcd_out = -1;
+ int crt_out = -1;
+ int tv_out = -1;
+ u32 hci_result;
+ u32 video_out;
+
+ /* scan expression. Multiple expressions may be delimited with ;
+ *
+ * NOTE: to keep scanning simple, invalid fields are ignored
+ */
+ while (remain) {
+ if (sscanf(buffer, " lcd_out : %i", &value) == 1)
+ lcd_out = value & 1;
+ else if (sscanf(buffer, " crt_out : %i", &value) == 1)
+ crt_out = value & 1;
+ else if (sscanf(buffer, " tv_out : %i", &value) == 1)
+ tv_out = value & 1;
+ /* advance to one character past the next ; */
+ do {
+ ++buffer;
+ --remain;
+ }
+ while (remain && *(buffer - 1) != ';');
+ }
+
+ hci_read1(HCI_VIDEO_OUT, &video_out, &hci_result);
+ if (hci_result == HCI_SUCCESS) {
+ unsigned int new_video_out = video_out;
+ if (lcd_out != -1)
+ _set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
+ if (crt_out != -1)
+ _set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
+ if (tv_out != -1)
+ _set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
+ /* To avoid unnecessary video disruption, only write the new
+ * video setting if something changed. */
+ if (new_video_out != video_out)
+ write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
+ } else {
+ return -EFAULT;
+ }
+
+ return count;
+}
+
+static char *read_fan(char *p)
+{
+ u32 hci_result;
+ u32 value;
+
+ hci_read1(HCI_FAN, &value, &hci_result);
+ if (hci_result == HCI_SUCCESS) {
+ p += sprintf(p, "running: %d\n", (value > 0));
+ p += sprintf(p, "force_on: %d\n", force_fan);
+ } else {
+ printk(MY_ERR "Error reading fan status\n");
+ }
+
+ return p;
+}
+
+static unsigned long write_fan(const char *buffer, unsigned long count)
+{
+ int value;
+ u32 hci_result;
+
+ if (sscanf(buffer, " force_on : %i", &value) == 1 &&
+ value >= 0 && value <= 1) {
+ hci_write1(HCI_FAN, value, &hci_result);
+ if (hci_result != HCI_SUCCESS)
+ return -EFAULT;
+ else
+ force_fan = value;
+ } else {
+ return -EINVAL;
+ }
+
+ return count;
+}
+
+static char *read_keys(char *p)
+{
+ u32 hci_result;
+ u32 value;
+
+ if (!key_event_valid) {
+ hci_read1(HCI_SYSTEM_EVENT, &value, &hci_result);
+ if (hci_result == HCI_SUCCESS) {
+ key_event_valid = 1;
+ last_key_event = value;
+ } else if (hci_result == HCI_EMPTY) {
+ /* better luck next time */
+ } else if (hci_result == HCI_NOT_SUPPORTED) {
+ /* This is a workaround for an unresolved issue on
+ * some machines where system events sporadically
+ * become disabled. */
+ hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
+ printk(MY_NOTICE "Re-enabled hotkeys\n");
+ } else {
+ printk(MY_ERR "Error reading hotkey status\n");
+ goto end;
+ }
+ }
+
+ p += sprintf(p, "hotkey_ready: %d\n", key_event_valid);
+ p += sprintf(p, "hotkey: 0x%04x\n", last_key_event);
+
+ end:
+ return p;
+}
+
+static unsigned long write_keys(const char *buffer, unsigned long count)
+{
+ int value;
+
+ if (sscanf(buffer, " hotkey_ready : %i", &value) == 1 && value == 0) {
+ key_event_valid = 0;
+ } else {
+ return -EINVAL;
+ }
+
+ return count;
+}
+
+static char *read_version(char *p)
+{
+ p += sprintf(p, "driver: %s\n", TOSHIBA_ACPI_VERSION);
+ p += sprintf(p, "proc_interface: %d\n",
+ PROC_INTERFACE_VERSION);
+ return p;
+}
+
+/* proc and module init
+ */
+
+#define PROC_TOSHIBA "toshiba"
+
+static ProcItem proc_items[] = {
+ {"lcd", read_lcd, write_lcd},
+ {"video", read_video, write_video},
+ {"fan", read_fan, write_fan},
+ {"keys", read_keys, write_keys},
+ {"version", read_version, NULL},
+ {NULL}
+};
+
+static acpi_status __init add_device(void)
+{
+ struct proc_dir_entry *proc;
+ ProcItem *item;
+
+ for (item = proc_items; item->name; ++item) {
+ proc = create_proc_read_entry(item->name,
+ S_IFREG | S_IRUGO | S_IWUSR,
+ toshiba_proc_dir,
+ (read_proc_t *) dispatch_read,
+ item);
+ if (proc)
+ proc->owner = THIS_MODULE;
+ if (proc && item->write_func)
+ proc->write_proc = (write_proc_t *) dispatch_write;
+ }
+
+ return AE_OK;
+}
+
+static acpi_status remove_device(void)
+{
+ ProcItem *item;
+
+ for (item = proc_items; item->name; ++item)
+ remove_proc_entry(item->name, toshiba_proc_dir);
+ return AE_OK;
+}
+
+static struct backlight_ops toshiba_backlight_data = {
+ .get_brightness = get_lcd,
+ .update_status = set_lcd_status,
+};
+
+static void toshiba_acpi_exit(void)
+{
+ if (toshiba_acpi.poll_dev) {
+ input_unregister_polled_device(toshiba_acpi.poll_dev);
+ input_free_polled_device(toshiba_acpi.poll_dev);
+ }
+
+ if (toshiba_acpi.rfk_dev)
+ rfkill_unregister(toshiba_acpi.rfk_dev);
+
+ if (toshiba_backlight_device)
+ backlight_device_unregister(toshiba_backlight_device);
+
+ remove_device();
+
+ if (toshiba_proc_dir)
+ remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
+
+ platform_device_unregister(toshiba_acpi.p_dev);
+
+ return;
+}
+
+static int __init toshiba_acpi_init(void)
+{
+ acpi_status status = AE_OK;
+ u32 hci_result;
+ bool bt_present;
+ bool bt_on;
+ bool radio_on;
+ int ret = 0;
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ /* simple device detection: look for HCI method */
+ if (is_valid_acpi_path(METHOD_HCI_1))
+ method_hci = METHOD_HCI_1;
+ else if (is_valid_acpi_path(METHOD_HCI_2))
+ method_hci = METHOD_HCI_2;
+ else
+ return -ENODEV;
+
+ printk(MY_INFO "Toshiba Laptop ACPI Extras version %s\n",
+ TOSHIBA_ACPI_VERSION);
+ printk(MY_INFO " HCI method: %s\n", method_hci);
+
+ mutex_init(&toshiba_acpi.mutex);
+
+ toshiba_acpi.p_dev = platform_device_register_simple("toshiba_acpi",
+ -1, NULL, 0);
+ if (IS_ERR(toshiba_acpi.p_dev)) {
+ ret = PTR_ERR(toshiba_acpi.p_dev);
+ printk(MY_ERR "unable to register platform device\n");
+ toshiba_acpi.p_dev = NULL;
+ toshiba_acpi_exit();
+ return ret;
+ }
+
+ force_fan = 0;
+ key_event_valid = 0;
+
+ /* enable event fifo */
+ hci_write1(HCI_SYSTEM_EVENT, 1, &hci_result);
+
+ toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
+ if (!toshiba_proc_dir) {
+ toshiba_acpi_exit();
+ return -ENODEV;
+ } else {
+ toshiba_proc_dir->owner = THIS_MODULE;
+ status = add_device();
+ if (ACPI_FAILURE(status)) {
+ toshiba_acpi_exit();
+ return -ENODEV;
+ }
+ }
+
+ toshiba_backlight_device = backlight_device_register("toshiba",
+ &toshiba_acpi.p_dev->dev,
+ NULL,
+ &toshiba_backlight_data);
+ if (IS_ERR(toshiba_backlight_device)) {
+ ret = PTR_ERR(toshiba_backlight_device);
+
+ printk(KERN_ERR "Could not register toshiba backlight device\n");
+ toshiba_backlight_device = NULL;
+ toshiba_acpi_exit();
+ return ret;
+ }
+ toshiba_backlight_device->props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
+
+ /* Register rfkill switch for Bluetooth */
+ if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) {
+ toshiba_acpi.rfk_dev = rfkill_allocate(&toshiba_acpi.p_dev->dev,
+ RFKILL_TYPE_BLUETOOTH);
+ if (!toshiba_acpi.rfk_dev) {
+ printk(MY_ERR "unable to allocate rfkill device\n");
+ toshiba_acpi_exit();
+ return -ENOMEM;
+ }
+
+ toshiba_acpi.rfk_dev->name = toshiba_acpi.bt_name;
+ toshiba_acpi.rfk_dev->toggle_radio = bt_rfkill_toggle_radio;
+ toshiba_acpi.rfk_dev->user_claim_unsupported = 1;
+ toshiba_acpi.rfk_dev->data = &toshiba_acpi;
+
+ if (hci_get_bt_on(&bt_on) == HCI_SUCCESS && bt_on) {
+ toshiba_acpi.rfk_dev->state = RFKILL_STATE_UNBLOCKED;
+ } else if (hci_get_radio_state(&radio_on) == HCI_SUCCESS &&
+ radio_on) {
+ toshiba_acpi.rfk_dev->state = RFKILL_STATE_SOFT_BLOCKED;
+ } else {
+ toshiba_acpi.rfk_dev->state = RFKILL_STATE_HARD_BLOCKED;
+ }
+
+ ret = rfkill_register(toshiba_acpi.rfk_dev);
+ if (ret) {
+ printk(MY_ERR "unable to register rfkill device\n");
+ toshiba_acpi_exit();
+ return -ENOMEM;
+ }
+
+ /* Register input device for kill switch */
+ toshiba_acpi.poll_dev = input_allocate_polled_device();
+ if (!toshiba_acpi.poll_dev) {
+ printk(MY_ERR
+ "unable to allocate kill-switch input device\n");
+ toshiba_acpi_exit();
+ return -ENOMEM;
+ }
+ toshiba_acpi.poll_dev->private = &toshiba_acpi;
+ toshiba_acpi.poll_dev->poll = bt_poll_rfkill;
+ toshiba_acpi.poll_dev->poll_interval = 1000; /* msecs */
+
+ toshiba_acpi.poll_dev->input->name = toshiba_acpi.rfk_name;
+ toshiba_acpi.poll_dev->input->id.bustype = BUS_HOST;
+ /* Toshiba USB ID */
+ toshiba_acpi.poll_dev->input->id.vendor = 0x0930;
+ set_bit(EV_SW, toshiba_acpi.poll_dev->input->evbit);
+ set_bit(SW_RFKILL_ALL, toshiba_acpi.poll_dev->input->swbit);
+ input_report_switch(toshiba_acpi.poll_dev->input,
+ SW_RFKILL_ALL, TRUE);
+ input_sync(toshiba_acpi.poll_dev->input);
+
+ ret = input_register_polled_device(toshiba_acpi.poll_dev);
+ if (ret) {
+ printk(MY_ERR
+ "unable to register kill-switch input device\n");
+ toshiba_acpi_exit();
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+module_init(toshiba_acpi_init);
+module_exit(toshiba_acpi_exit);
diff --git a/drivers/platform/x86/wmi.c b/drivers/platform/x86/wmi.c
new file mode 100644
index 0000000..8a8b377
--- /dev/null
+++ b/drivers/platform/x86/wmi.c
@@ -0,0 +1,747 @@
+/*
+ * ACPI-WMI mapping driver
+ *
+ * Copyright (C) 2007-2008 Carlos Corbacho <carlos@strangeworlds.co.uk>
+ *
+ * GUID parsing code from ldm.c is:
+ * Copyright (C) 2001,2002 Richard Russon <ldm@flatcap.org>
+ * Copyright (c) 2001-2007 Anton Altaparmakov
+ * Copyright (C) 2001,2002 Jakob Kemi <jakob.kemi@telia.com>
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/acpi.h>
+#include <acpi/acpi_bus.h>
+#include <acpi/acpi_drivers.h>
+
+ACPI_MODULE_NAME("wmi");
+MODULE_AUTHOR("Carlos Corbacho");
+MODULE_DESCRIPTION("ACPI-WMI Mapping Driver");
+MODULE_LICENSE("GPL");
+
+#define ACPI_WMI_CLASS "wmi"
+
+#undef PREFIX
+#define PREFIX "ACPI: WMI: "
+
+static DEFINE_MUTEX(wmi_data_lock);
+
+struct guid_block {
+ char guid[16];
+ union {
+ char object_id[2];
+ struct {
+ unsigned char notify_id;
+ unsigned char reserved;
+ };
+ };
+ u8 instance_count;
+ u8 flags;
+};
+
+struct wmi_block {
+ struct list_head list;
+ struct guid_block gblock;
+ acpi_handle handle;
+ wmi_notify_handler handler;
+ void *handler_data;
+};
+
+static struct wmi_block wmi_blocks;
+
+/*
+ * If the GUID data block is marked as expensive, we must enable and
+ * explicitily disable data collection.
+ */
+#define ACPI_WMI_EXPENSIVE 0x1
+#define ACPI_WMI_METHOD 0x2 /* GUID is a method */
+#define ACPI_WMI_STRING 0x4 /* GUID takes & returns a string */
+#define ACPI_WMI_EVENT 0x8 /* GUID is an event */
+
+static int acpi_wmi_remove(struct acpi_device *device, int type);
+static int acpi_wmi_add(struct acpi_device *device);
+
+static const struct acpi_device_id wmi_device_ids[] = {
+ {"PNP0C14", 0},
+ {"pnp0c14", 0},
+ {"", 0},
+};
+MODULE_DEVICE_TABLE(acpi, wmi_device_ids);
+
+static struct acpi_driver acpi_wmi_driver = {
+ .name = "wmi",
+ .class = ACPI_WMI_CLASS,
+ .ids = wmi_device_ids,
+ .ops = {
+ .add = acpi_wmi_add,
+ .remove = acpi_wmi_remove,
+ },
+};
+
+/*
+ * GUID parsing functions
+ */
+
+/**
+ * wmi_parse_hexbyte - Convert a ASCII hex number to a byte
+ * @src: Pointer to at least 2 characters to convert.
+ *
+ * Convert a two character ASCII hex string to a number.
+ *
+ * Return: 0-255 Success, the byte was parsed correctly
+ * -1 Error, an invalid character was supplied
+ */
+static int wmi_parse_hexbyte(const u8 *src)
+{
+ unsigned int x; /* For correct wrapping */
+ int h;
+
+ /* high part */
+ x = src[0];
+ if (x - '0' <= '9' - '0') {
+ h = x - '0';
+ } else if (x - 'a' <= 'f' - 'a') {
+ h = x - 'a' + 10;
+ } else if (x - 'A' <= 'F' - 'A') {
+ h = x - 'A' + 10;
+ } else {
+ return -1;
+ }
+ h <<= 4;
+
+ /* low part */
+ x = src[1];
+ if (x - '0' <= '9' - '0')
+ return h | (x - '0');
+ if (x - 'a' <= 'f' - 'a')
+ return h | (x - 'a' + 10);
+ if (x - 'A' <= 'F' - 'A')
+ return h | (x - 'A' + 10);
+ return -1;
+}
+
+/**
+ * wmi_swap_bytes - Rearrange GUID bytes to match GUID binary
+ * @src: Memory block holding binary GUID (16 bytes)
+ * @dest: Memory block to hold byte swapped binary GUID (16 bytes)
+ *
+ * Byte swap a binary GUID to match it's real GUID value
+ */
+static void wmi_swap_bytes(u8 *src, u8 *dest)
+{
+ int i;
+
+ for (i = 0; i <= 3; i++)
+ memcpy(dest + i, src + (3 - i), 1);
+
+ for (i = 0; i <= 1; i++)
+ memcpy(dest + 4 + i, src + (5 - i), 1);
+
+ for (i = 0; i <= 1; i++)
+ memcpy(dest + 6 + i, src + (7 - i), 1);
+
+ memcpy(dest + 8, src + 8, 8);
+}
+
+/**
+ * wmi_parse_guid - Convert GUID from ASCII to binary
+ * @src: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @dest: Memory block to hold binary GUID (16 bytes)
+ *
+ * N.B. The GUID need not be NULL terminated.
+ *
+ * Return: 'true' @dest contains binary GUID
+ * 'false' @dest contents are undefined
+ */
+static bool wmi_parse_guid(const u8 *src, u8 *dest)
+{
+ static const int size[] = { 4, 2, 2, 2, 6 };
+ int i, j, v;
+
+ if (src[8] != '-' || src[13] != '-' ||
+ src[18] != '-' || src[23] != '-')
+ return false;
+
+ for (j = 0; j < 5; j++, src++) {
+ for (i = 0; i < size[j]; i++, src += 2, *dest++ = v) {
+ v = wmi_parse_hexbyte(src);
+ if (v < 0)
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static bool find_guid(const char *guid_string, struct wmi_block **out)
+{
+ char tmp[16], guid_input[16];
+ struct wmi_block *wblock;
+ struct guid_block *block;
+ struct list_head *p;
+
+ wmi_parse_guid(guid_string, tmp);
+ wmi_swap_bytes(tmp, guid_input);
+
+ list_for_each(p, &wmi_blocks.list) {
+ wblock = list_entry(p, struct wmi_block, list);
+ block = &wblock->gblock;
+
+ if (memcmp(block->guid, guid_input, 16) == 0) {
+ if (out)
+ *out = wblock;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static acpi_status wmi_method_enable(struct wmi_block *wblock, int enable)
+{
+ struct guid_block *block = NULL;
+ char method[5];
+ struct acpi_object_list input;
+ union acpi_object params[1];
+ acpi_status status;
+ acpi_handle handle;
+
+ block = &wblock->gblock;
+ handle = wblock->handle;
+
+ if (!block)
+ return AE_NOT_EXIST;
+
+ input.count = 1;
+ input.pointer = params;
+ params[0].type = ACPI_TYPE_INTEGER;
+ params[0].integer.value = enable;
+
+ snprintf(method, 5, "WE%02X", block->notify_id);
+ status = acpi_evaluate_object(handle, method, &input, NULL);
+
+ if (status != AE_OK && status != AE_NOT_FOUND)
+ return status;
+ else
+ return AE_OK;
+}
+
+/*
+ * Exported WMI functions
+ */
+/**
+ * wmi_evaluate_method - Evaluate a WMI method
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * @method_id: Method ID to call
+ * &in: Buffer containing input for the method call
+ * &out: Empty buffer to return the method results
+ *
+ * Call an ACPI-WMI method
+ */
+acpi_status wmi_evaluate_method(const char *guid_string, u8 instance,
+u32 method_id, const struct acpi_buffer *in, struct acpi_buffer *out)
+{
+ struct guid_block *block = NULL;
+ struct wmi_block *wblock = NULL;
+ acpi_handle handle;
+ acpi_status status;
+ struct acpi_object_list input;
+ union acpi_object params[3];
+ char method[4] = "WM";
+
+ if (!find_guid(guid_string, &wblock))
+ return AE_ERROR;
+
+ block = &wblock->gblock;
+ handle = wblock->handle;
+
+ if (!(block->flags & ACPI_WMI_METHOD))
+ return AE_BAD_DATA;
+
+ if (block->instance_count < instance)
+ return AE_BAD_PARAMETER;
+
+ input.count = 2;
+ input.pointer = params;
+ params[0].type = ACPI_TYPE_INTEGER;
+ params[0].integer.value = instance;
+ params[1].type = ACPI_TYPE_INTEGER;
+ params[1].integer.value = method_id;
+
+ if (in) {
+ input.count = 3;
+
+ if (block->flags & ACPI_WMI_STRING) {
+ params[2].type = ACPI_TYPE_STRING;
+ } else {
+ params[2].type = ACPI_TYPE_BUFFER;
+ }
+ params[2].buffer.length = in->length;
+ params[2].buffer.pointer = in->pointer;
+ }
+
+ strncat(method, block->object_id, 2);
+
+ status = acpi_evaluate_object(handle, method, &input, out);
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(wmi_evaluate_method);
+
+/**
+ * wmi_query_block - Return contents of a WMI block
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * &out: Empty buffer to return the contents of the data block to
+ *
+ * Return the contents of an ACPI-WMI data block to a buffer
+ */
+acpi_status wmi_query_block(const char *guid_string, u8 instance,
+struct acpi_buffer *out)
+{
+ struct guid_block *block = NULL;
+ struct wmi_block *wblock = NULL;
+ acpi_handle handle, wc_handle;
+ acpi_status status, wc_status = AE_ERROR;
+ struct acpi_object_list input, wc_input;
+ union acpi_object wc_params[1], wq_params[1];
+ char method[4];
+ char wc_method[4] = "WC";
+
+ if (!guid_string || !out)
+ return AE_BAD_PARAMETER;
+
+ if (!find_guid(guid_string, &wblock))
+ return AE_ERROR;
+
+ block = &wblock->gblock;
+ handle = wblock->handle;
+
+ if (block->instance_count < instance)
+ return AE_BAD_PARAMETER;
+
+ /* Check GUID is a data block */
+ if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
+ return AE_ERROR;
+
+ input.count = 1;
+ input.pointer = wq_params;
+ wq_params[0].type = ACPI_TYPE_INTEGER;
+ wq_params[0].integer.value = instance;
+
+ /*
+ * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method first to
+ * enable collection.
+ */
+ if (block->flags & ACPI_WMI_EXPENSIVE) {
+ wc_input.count = 1;
+ wc_input.pointer = wc_params;
+ wc_params[0].type = ACPI_TYPE_INTEGER;
+ wc_params[0].integer.value = 1;
+
+ strncat(wc_method, block->object_id, 2);
+
+ /*
+ * Some GUIDs break the specification by declaring themselves
+ * expensive, but have no corresponding WCxx method. So we
+ * should not fail if this happens.
+ */
+ wc_status = acpi_get_handle(handle, wc_method, &wc_handle);
+ if (ACPI_SUCCESS(wc_status))
+ wc_status = acpi_evaluate_object(handle, wc_method,
+ &wc_input, NULL);
+ }
+
+ strcpy(method, "WQ");
+ strncat(method, block->object_id, 2);
+
+ status = acpi_evaluate_object(handle, method, &input, out);
+
+ /*
+ * If ACPI_WMI_EXPENSIVE, call the relevant WCxx method, even if
+ * the WQxx method failed - we should disable collection anyway.
+ */
+ if ((block->flags & ACPI_WMI_EXPENSIVE) && ACPI_SUCCESS(wc_status)) {
+ wc_params[0].integer.value = 0;
+ status = acpi_evaluate_object(handle,
+ wc_method, &wc_input, NULL);
+ }
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(wmi_query_block);
+
+/**
+ * wmi_set_block - Write to a WMI block
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ * @instance: Instance index
+ * &in: Buffer containing new values for the data block
+ *
+ * Write the contents of the input buffer to an ACPI-WMI data block
+ */
+acpi_status wmi_set_block(const char *guid_string, u8 instance,
+const struct acpi_buffer *in)
+{
+ struct guid_block *block = NULL;
+ struct wmi_block *wblock = NULL;
+ acpi_handle handle;
+ struct acpi_object_list input;
+ union acpi_object params[2];
+ char method[4] = "WS";
+
+ if (!guid_string || !in)
+ return AE_BAD_DATA;
+
+ if (!find_guid(guid_string, &wblock))
+ return AE_ERROR;
+
+ block = &wblock->gblock;
+ handle = wblock->handle;
+
+ if (block->instance_count < instance)
+ return AE_BAD_PARAMETER;
+
+ /* Check GUID is a data block */
+ if (block->flags & (ACPI_WMI_EVENT | ACPI_WMI_METHOD))
+ return AE_ERROR;
+
+ input.count = 2;
+ input.pointer = params;
+ params[0].type = ACPI_TYPE_INTEGER;
+ params[0].integer.value = instance;
+
+ if (block->flags & ACPI_WMI_STRING) {
+ params[1].type = ACPI_TYPE_STRING;
+ } else {
+ params[1].type = ACPI_TYPE_BUFFER;
+ }
+ params[1].buffer.length = in->length;
+ params[1].buffer.pointer = in->pointer;
+
+ strncat(method, block->object_id, 2);
+
+ return acpi_evaluate_object(handle, method, &input, NULL);
+}
+EXPORT_SYMBOL_GPL(wmi_set_block);
+
+/**
+ * wmi_install_notify_handler - Register handler for WMI events
+ * @handler: Function to handle notifications
+ * @data: Data to be returned to handler when event is fired
+ *
+ * Register a handler for events sent to the ACPI-WMI mapper device.
+ */
+acpi_status wmi_install_notify_handler(const char *guid,
+wmi_notify_handler handler, void *data)
+{
+ struct wmi_block *block;
+ acpi_status status;
+
+ if (!guid || !handler)
+ return AE_BAD_PARAMETER;
+
+ find_guid(guid, &block);
+ if (!block)
+ return AE_NOT_EXIST;
+
+ if (block->handler)
+ return AE_ALREADY_ACQUIRED;
+
+ block->handler = handler;
+ block->handler_data = data;
+
+ status = wmi_method_enable(block, 1);
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(wmi_install_notify_handler);
+
+/**
+ * wmi_uninstall_notify_handler - Unregister handler for WMI events
+ *
+ * Unregister handler for events sent to the ACPI-WMI mapper device.
+ */
+acpi_status wmi_remove_notify_handler(const char *guid)
+{
+ struct wmi_block *block;
+ acpi_status status;
+
+ if (!guid)
+ return AE_BAD_PARAMETER;
+
+ find_guid(guid, &block);
+ if (!block)
+ return AE_NOT_EXIST;
+
+ if (!block->handler)
+ return AE_NULL_ENTRY;
+
+ status = wmi_method_enable(block, 0);
+
+ block->handler = NULL;
+ block->handler_data = NULL;
+
+ return status;
+}
+EXPORT_SYMBOL_GPL(wmi_remove_notify_handler);
+
+/**
+ * wmi_get_event_data - Get WMI data associated with an event
+ *
+ * @event - Event to find
+ * &out - Buffer to hold event data
+ *
+ * Returns extra data associated with an event in WMI.
+ */
+acpi_status wmi_get_event_data(u32 event, struct acpi_buffer *out)
+{
+ struct acpi_object_list input;
+ union acpi_object params[1];
+ struct guid_block *gblock;
+ struct wmi_block *wblock;
+ struct list_head *p;
+
+ input.count = 1;
+ input.pointer = params;
+ params[0].type = ACPI_TYPE_INTEGER;
+ params[0].integer.value = event;
+
+ list_for_each(p, &wmi_blocks.list) {
+ wblock = list_entry(p, struct wmi_block, list);
+ gblock = &wblock->gblock;
+
+ if ((gblock->flags & ACPI_WMI_EVENT) &&
+ (gblock->notify_id == event))
+ return acpi_evaluate_object(wblock->handle, "_WED",
+ &input, out);
+ }
+
+ return AE_NOT_FOUND;
+}
+EXPORT_SYMBOL_GPL(wmi_get_event_data);
+
+/**
+ * wmi_has_guid - Check if a GUID is available
+ * @guid_string: 36 char string of the form fa50ff2b-f2e8-45de-83fa-65417f2f49ba
+ *
+ * Check if a given GUID is defined by _WDG
+ */
+bool wmi_has_guid(const char *guid_string)
+{
+ return find_guid(guid_string, NULL);
+}
+EXPORT_SYMBOL_GPL(wmi_has_guid);
+
+/*
+ * Parse the _WDG method for the GUID data blocks
+ */
+static __init acpi_status parse_wdg(acpi_handle handle)
+{
+ struct acpi_buffer out = {ACPI_ALLOCATE_BUFFER, NULL};
+ union acpi_object *obj;
+ struct guid_block *gblock;
+ struct wmi_block *wblock;
+ acpi_status status;
+ u32 i, total;
+
+ status = acpi_evaluate_object(handle, "_WDG", NULL, &out);
+
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = (union acpi_object *) out.pointer;
+
+ if (obj->type != ACPI_TYPE_BUFFER)
+ return AE_ERROR;
+
+ total = obj->buffer.length / sizeof(struct guid_block);
+
+ gblock = kzalloc(obj->buffer.length, GFP_KERNEL);
+ if (!gblock)
+ return AE_NO_MEMORY;
+
+ memcpy(gblock, obj->buffer.pointer, obj->buffer.length);
+
+ for (i = 0; i < total; i++) {
+ wblock = kzalloc(sizeof(struct wmi_block), GFP_KERNEL);
+ if (!wblock)
+ return AE_NO_MEMORY;
+
+ wblock->gblock = gblock[i];
+ wblock->handle = handle;
+ list_add_tail(&wblock->list, &wmi_blocks.list);
+ }
+
+ kfree(out.pointer);
+ kfree(gblock);
+
+ return status;
+}
+
+/*
+ * WMI can have EmbeddedControl access regions. In which case, we just want to
+ * hand these off to the EC driver.
+ */
+static acpi_status
+acpi_wmi_ec_space_handler(u32 function, acpi_physical_address address,
+ u32 bits, acpi_integer * value,
+ void *handler_context, void *region_context)
+{
+ int result = 0, i = 0;
+ u8 temp = 0;
+
+ if ((address > 0xFF) || !value)
+ return AE_BAD_PARAMETER;
+
+ if (function != ACPI_READ && function != ACPI_WRITE)
+ return AE_BAD_PARAMETER;
+
+ if (bits != 8)
+ return AE_BAD_PARAMETER;
+
+ if (function == ACPI_READ) {
+ result = ec_read(address, &temp);
+ (*value) |= ((acpi_integer)temp) << i;
+ } else {
+ temp = 0xff & ((*value) >> i);
+ result = ec_write(address, temp);
+ }
+
+ switch (result) {
+ case -EINVAL:
+ return AE_BAD_PARAMETER;
+ break;
+ case -ENODEV:
+ return AE_NOT_FOUND;
+ break;
+ case -ETIME:
+ return AE_TIME;
+ break;
+ default:
+ return AE_OK;
+ }
+}
+
+static void acpi_wmi_notify(acpi_handle handle, u32 event, void *data)
+{
+ struct guid_block *block;
+ struct wmi_block *wblock;
+ struct list_head *p;
+ struct acpi_device *device = data;
+
+ list_for_each(p, &wmi_blocks.list) {
+ wblock = list_entry(p, struct wmi_block, list);
+ block = &wblock->gblock;
+
+ if ((block->flags & ACPI_WMI_EVENT) &&
+ (block->notify_id == event)) {
+ if (wblock->handler)
+ wblock->handler(event, wblock->handler_data);
+
+ acpi_bus_generate_netlink_event(
+ device->pnp.device_class, dev_name(&device->dev),
+ event, 0);
+ break;
+ }
+ }
+}
+
+static int acpi_wmi_remove(struct acpi_device *device, int type)
+{
+ acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+ acpi_wmi_notify);
+
+ acpi_remove_address_space_handler(device->handle,
+ ACPI_ADR_SPACE_EC, &acpi_wmi_ec_space_handler);
+
+ return 0;
+}
+
+static int __init acpi_wmi_add(struct acpi_device *device)
+{
+ acpi_status status;
+ int result = 0;
+
+ status = acpi_install_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
+ acpi_wmi_notify, device);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX "Error installing notify handler\n");
+ return -ENODEV;
+ }
+
+ status = acpi_install_address_space_handler(device->handle,
+ ACPI_ADR_SPACE_EC,
+ &acpi_wmi_ec_space_handler,
+ NULL, NULL);
+ if (ACPI_FAILURE(status))
+ return -ENODEV;
+
+ status = parse_wdg(device->handle);
+ if (ACPI_FAILURE(status)) {
+ printk(KERN_ERR PREFIX "Error installing EC region handler\n");
+ return -ENODEV;
+ }
+
+ return result;
+}
+
+static int __init acpi_wmi_init(void)
+{
+ acpi_status result;
+
+ INIT_LIST_HEAD(&wmi_blocks.list);
+
+ if (acpi_disabled)
+ return -ENODEV;
+
+ result = acpi_bus_register_driver(&acpi_wmi_driver);
+
+ if (result < 0) {
+ printk(KERN_INFO PREFIX "Error loading mapper\n");
+ } else {
+ printk(KERN_INFO PREFIX "Mapper loaded\n");
+ }
+
+ return result;
+}
+
+static void __exit acpi_wmi_exit(void)
+{
+ struct list_head *p, *tmp;
+ struct wmi_block *wblock;
+
+ acpi_bus_unregister_driver(&acpi_wmi_driver);
+
+ list_for_each_safe(p, tmp, &wmi_blocks.list) {
+ wblock = list_entry(p, struct wmi_block, list);
+
+ list_del(p);
+ kfree(wblock);
+ }
+
+ printk(KERN_INFO PREFIX "Mapper unloaded\n");
+}
+
+subsys_initcall(acpi_wmi_init);
+module_exit(acpi_wmi_exit);
--
cgit v1.1