acpi: Add Eee PC Hotkey Driver
better eee pc out of the box linux-2.6 experience. fedora merged and with upstream accepted /sys interface. svn path=/dists/trunk/linux-2.6/; revision=11083
This commit is contained in:
Maximilian Attems
parent
e034d98118
commit
1be0575a02
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@ -38,6 +38,7 @@ linux-2.6 (2.6.25~rc9-1~experimental.1) UNRELEASED; urgency=low
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* copyright: adapt to latest lintian recommendation.
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* input: Add 4 additional exports for modular speakup and braille support.
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* firewire: Add firewire-git.patch for latest firewire tree features.
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* acpi: Add Eee PC Hotkey Driver.
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[ Martin Michlmayr ]
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* [arm/armel] Add a kernel for Orion based devices, such as the QNAP
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@ -0,0 +1,490 @@
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Signed-off-by: Eric Cooper <ecc@cmu.edu>
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---
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drivers/misc/Kconfig | 10 +
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drivers/misc/Makefile | 1 +
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drivers/misc/eeepc.c | 447 +++++++++++++++++++++++++++++++++++++++++++++++++
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3 files changed, 458 insertions(+), 0 deletions(-)
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create mode 100644 drivers/misc/eeepc.c
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diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
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index b1f9a40..8fd1ccb 100644
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--- a/drivers/misc/Kconfig
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+++ b/drivers/misc/Kconfig
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@@ -251,4 +251,14 @@ config ATMEL_SSC
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driver (SCSI/ATA) which supports enclosures
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or a SCSI enclosure device (SES) to use these services.
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+config EEEPC
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+ tristate "Eee PC Hotkey Driver (EXPERIMENTAL)"
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+ depends on X86
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+ depends on ACPI
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+ depends on EXPERIMENTAL && !ACPI_ASUS
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+ ---help---
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+ This driver supports the Fn-Fx keys on Eee PC laptops.
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+
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+ If you have an Eee PC laptop, say Y or M here.
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+
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endif # MISC_DEVICES
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diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
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index 87f2685..699b35c 100644
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--- a/drivers/misc/Makefile
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+++ b/drivers/misc/Makefile
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@@ -17,3 +17,4 @@ obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o
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obj-$(CONFIG_EEPROM_93CX6) += eeprom_93cx6.o
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obj-$(CONFIG_INTEL_MENLOW) += intel_menlow.o
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obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
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+obj-$(CONFIG_EEEPC) += eeepc.o
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diff --git a/drivers/misc/eeepc.c b/drivers/misc/eeepc.c
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new file mode 100644
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index 0000000..2e33117
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--- /dev/null
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+++ b/drivers/misc/eeepc.c
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@@ -0,0 +1,447 @@
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+/*
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+ * eepc_acpi.c - Asus Eee PC hotkey driver
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+ *
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+ * Copyright (C) 2008 Eric Cooper <ecc@cmu.edu>
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+ *
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+ * Based on asus_acpi.c as patched for the Eee PC by Asus:
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+ * ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar
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+ *
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+ * Copyright (C) 2002-2005 Julien Lerouge, 2003-2006 Karol Kozimor
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; either version 2 of the License, or
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+ * (at your option) any later version.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/init.h>
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+#include <linux/types.h>
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+#include <linux/platform_device.h>
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+#include <acpi/acpi_drivers.h>
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+#include <acpi/acpi_bus.h>
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+#include <asm/uaccess.h>
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+
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+#define EEEPC_HOTK_NAME "Eee PC Hotkey Driver"
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+#define EEEPC_HOTK_FILE "eeepc"
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+#define EEEPC_HOTK_CLASS "hotkey"
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+#define EEEPC_HOTK_DEVICE_NAME "Hotkey"
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+#define EEEPC_HOTK_HID "ASUS010"
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+
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+#define EEEPC_LOG EEEPC_HOTK_FILE ": "
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+#define EEEPC_ERR KERN_ERR EEEPC_LOG
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+#define EEEPC_WARNING KERN_WARNING EEEPC_LOG
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+#define EEEPC_NOTICE KERN_NOTICE EEEPC_LOG
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+#define EEEPC_INFO KERN_INFO EEEPC_LOG
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+
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+/*
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+ * Definitions for Asus EeePC
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+ */
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+
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+#define NOTIFY_WLAN_ON 0x10
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+
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+enum {
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+ DISABLE_ASL_WLAN = 0x0001,
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+ DISABLE_ASL_BLUETOOTH = 0x0002,
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+ DISABLE_ASL_IRDA = 0x0004,
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+ DISABLE_ASL_CAMERA = 0x0008,
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+ DISABLE_ASL_TV = 0x0010,
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+ DISABLE_ASL_GPS = 0x0020,
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+ DISABLE_ASL_DISPLAYSWITCH = 0x0040,
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+ DISABLE_ASL_MODEM = 0x0080,
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+ DISABLE_ASL_CARDREADER = 0x0100
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+};
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+
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+enum {
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+ CM_ASL_WLAN = 0,
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+ CM_ASL_BLUETOOTH,
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+ CM_ASL_IRDA,
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+ CM_ASL_1394,
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+ CM_ASL_CAMERA,
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+ CM_ASL_TV,
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+ CM_ASL_GPS,
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+ CM_ASL_DVDROM,
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+ CM_ASL_DISPLAYSWITCH,
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+ CM_ASL_PANELBRIGHT,
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+ CM_ASL_BIOSFLASH,
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+ CM_ASL_ACPIFLASH,
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+ CM_ASL_CPUFV,
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+ CM_ASL_CPUTEMPERATURE,
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+ CM_ASL_FANCPU,
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+ CM_ASL_FANCHASSIS,
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+ CM_ASL_USBPORT1,
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+ CM_ASL_USBPORT2,
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+ CM_ASL_USBPORT3,
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+ CM_ASL_MODEM,
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+ CM_ASL_CARDREADER,
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+ CM_ASL_LID
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+};
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+
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+const char *cm_getv[] = {
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+ "WLDG", NULL, NULL, NULL,
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+ "CAMG", NULL, NULL, NULL,
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+ NULL, "PBLG", NULL, NULL,
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+ "CFVG", NULL, NULL, NULL,
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+ "USBG", NULL, NULL, "MODG",
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+ "CRDG", "LIDG"
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+};
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+
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+const char *cm_setv[] = {
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+ "WLDS", NULL, NULL, NULL,
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+ "CAMS", NULL, NULL, NULL,
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+ "SDSP", "PBLS", "HDPS", NULL,
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+ "CFVS", NULL, NULL, NULL,
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+ "USBG", NULL, NULL, "MODS",
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+ "CRDS", NULL
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+};
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+
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+static unsigned int init_flag;
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+
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+/*
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+ * This is the main structure, we can use it to store useful information
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+ * about the hotk device
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+ */
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+struct eeepc_hotk {
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+ struct acpi_device *device; /* the device we are in */
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+ acpi_handle handle; /* the handle of the hotk device */
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+ u32 cm_supported; /* the control methods supported
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+ by this BIOS */
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+ u16 event_count[128]; /* count for each event */
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+};
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+
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+/* The actual device the driver binds to */
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+static struct eeepc_hotk *ehotk;
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+
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+/*
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+ * The hotkey driver declaration
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+ */
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+static int eeepc_hotk_add(struct acpi_device *device);
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+static int eeepc_hotk_remove(struct acpi_device *device, int type);
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+
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+static const struct acpi_device_id eee_device_ids[] = {
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+ {EEEPC_HOTK_HID, 0},
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+ {"", 0},
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+};
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+
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+static struct acpi_driver eeepc_hotk_driver = {
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+ .name = EEEPC_HOTK_NAME,
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+ .class = EEEPC_HOTK_CLASS,
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+ .ids = eee_device_ids,
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+ .ops = {
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+ .add = eeepc_hotk_add,
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+ .remove = eeepc_hotk_remove,
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+ },
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+};
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+
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+MODULE_AUTHOR("Julien Lerouge, Karol Kozimor, Eric Cooper");
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+MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
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+MODULE_LICENSE("GPL");
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+
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+/*
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+ * returns 1 if write is successful, otherwise 0.
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+ */
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+static int write_acpi_int(acpi_handle handle, const char *method, int val,
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+ struct acpi_buffer *output)
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+{
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+ struct acpi_object_list params;
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+ union acpi_object in_obj;
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+ acpi_status status;
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+
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+ params.count = 1;
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+ params.pointer = &in_obj;
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+ in_obj.type = ACPI_TYPE_INTEGER;
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+ in_obj.integer.value = val;
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+
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+ status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
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+ return (status == AE_OK);
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+}
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+
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+static int read_acpi_int(acpi_handle handle, const char *method, int *val)
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+{
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+ struct acpi_buffer output;
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+ union acpi_object out_obj;
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+ acpi_status status;
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+
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+ output.length = sizeof(out_obj);
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+ output.pointer = &out_obj;
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+ status = acpi_evaluate_object(handle, (char *) method, NULL, &output);
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+ *val = out_obj.integer.value;
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+ return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER);
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+}
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+
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+static int parse_arg(const char *buf, unsigned long count, int *val)
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+{
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+ if (!count)
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+ return 0;
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+ if (count > 31)
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+ return -EINVAL;
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+ if (sscanf(buf, "%i", val) != 1)
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+ return -EINVAL;
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+ return count;
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+}
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+
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+static ssize_t store_proc(int cm, const char *buf, size_t count)
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+{
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+ int rv, value;
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+
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+ rv = parse_arg(buf, count, &value);
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+ if (rv > 0 && (ehotk->cm_supported & (0x1 << cm))) {
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+ const char *method = cm_setv[cm];
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+ if (method == NULL)
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+ return 0;
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+ if (!write_acpi_int(ehotk->handle, method, value, NULL))
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+ printk(EEEPC_WARNING "Error writing %s\n", method);
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+ }
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+ return rv;
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+}
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+
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+static ssize_t show_proc(int cm, char *buf)
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+{
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+ int value = -1;
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+
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+ if ((ehotk->cm_supported & (0x1 << cm))) {
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+ const char *method = cm_getv[cm];
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+ if (method == NULL)
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+ return 0;
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+ if (!read_acpi_int(ehotk->handle, method, &value))
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+ printk(EEEPC_WARNING "Error reading %s\n", method);
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+ }
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+ return sprintf(buf, "%d\n", value);
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+}
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+
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+static ssize_t real_store_init(struct device *dev,
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+ struct device_attribute *attr,
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+ const char *buf, size_t count)
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+{
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+ int rv, value;
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+
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+ rv = parse_arg(buf, count, &value);
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+ if (!write_acpi_int(ehotk->handle, "INIT", value, NULL))
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+ printk(EEEPC_ERR "Hotkey initialization failed\n");
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+ else
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+ printk(EEEPC_INFO "Reset init flag 0x%x\n", value);
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+ return rv;
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+}
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+
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+#define EEEPC_CREATE_DEVICE_ATTR(_name, _cm) \
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+ static ssize_t show_##_name(struct device *dev, \
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+ struct device_attribute *attr, \
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+ char *buf) \
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+ { \
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+ return show_proc(_cm, buf); \
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+ } \
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+ static ssize_t store_##_name(struct device *dev, \
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+ struct device_attribute *attr, \
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+ const char *buf, size_t count) \
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+ { \
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+ return store_proc(_cm, buf, count); \
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+ } \
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+ static struct device_attribute dev_attr_##_name = { \
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+ .attr = { \
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+ .name = __stringify(_name), \
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+ .mode = 0644 }, \
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+ .show = show_##_name, \
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+ .store = store_##_name, \
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+ }
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+
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+EEEPC_CREATE_DEVICE_ATTR(brn, CM_ASL_PANELBRIGHT);
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+EEEPC_CREATE_DEVICE_ATTR(camera, CM_ASL_CAMERA);
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+EEEPC_CREATE_DEVICE_ATTR(cardr, CM_ASL_CARDREADER);
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+EEEPC_CREATE_DEVICE_ATTR(cpufv, CM_ASL_CPUFV);
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+EEEPC_CREATE_DEVICE_ATTR(disp, CM_ASL_DISPLAYSWITCH);
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+EEEPC_CREATE_DEVICE_ATTR(hdps, CM_ASL_BIOSFLASH);
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+EEEPC_CREATE_DEVICE_ATTR(init, -1); /* fixed up in eeepc_hotk_add() */
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+EEEPC_CREATE_DEVICE_ATTR(lid, CM_ASL_LID);
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+EEEPC_CREATE_DEVICE_ATTR(wlan, CM_ASL_WLAN);
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+
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+static struct attribute *platform_attributes[] = {
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+ &dev_attr_brn.attr,
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+ &dev_attr_camera.attr,
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+ &dev_attr_cardr.attr,
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+ &dev_attr_cpufv.attr,
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+ &dev_attr_disp.attr,
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+ &dev_attr_hdps.attr,
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+ &dev_attr_init.attr,
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+ &dev_attr_lid.attr,
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+ &dev_attr_wlan.attr,
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+ NULL
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+};
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+
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+static struct attribute_group platform_attribute_group = {
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+ .attrs = platform_attributes
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+};
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+
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+static int eeepc_hotk_check(void)
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+{
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+ struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
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+ int result;
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+
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+ result = acpi_bus_get_status(ehotk->device);
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+ if (result)
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+ return result;
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+ if (ehotk->device->status.present) {
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+ if (!write_acpi_int(ehotk->handle, "INIT", init_flag,
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+ &buffer)) {
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+ printk(EEEPC_ERR "Hotkey initialization failed\n");
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+ return -ENODEV;
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+ } else {
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+ printk(EEEPC_NOTICE "Hotkey init flags 0x%x\n",
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+ init_flag);
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+ }
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+ /* get control methods supported */
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+ if (!read_acpi_int(ehotk->handle, "CMSG"
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+ , &ehotk->cm_supported)) {
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+ printk(EEEPC_ERR
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+ "Get control methods supported failed\n");
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+ return -ENODEV;
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+ } else {
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+ printk(EEEPC_INFO
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+ "Get control methods supported: 0x%x\n",
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+ ehotk->cm_supported);
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+ }
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+ ehotk->cm_supported |= (0x1 << CM_ASL_LID);
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+ } else {
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+ printk(EEEPC_ERR "Hotkey device not present, aborting\n");
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+ return -EINVAL;
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+ }
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+ return 0;
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+}
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+
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+static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
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+{
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+ if (!ehotk)
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+ return;
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+ /* if DISABLE_ASL_WLAN is set, the notify code for fn+f2
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+ will always be 0x10 */
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+ if (event == NOTIFY_WLAN_ON && (DISABLE_ASL_WLAN & init_flag)) {
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+ int value;
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+ if (ehotk->cm_supported & (0x1 << CM_ASL_WLAN)) {
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+ const char *method = cm_getv[CM_ASL_WLAN];
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+ if (!read_acpi_int(ehotk->handle, method, &value))
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+ printk(EEEPC_WARNING "Error reading %s\n",
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+ method);
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+ else if (value == 1)
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+ event = 0x11;
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+ }
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+ }
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+ acpi_bus_generate_proc_event(ehotk->device, event,
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+ ehotk->event_count[event % 128]++);
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+}
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+
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+static int ehotk_found;
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+
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+static int eeepc_hotk_add(struct acpi_device *device)
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+{
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+ acpi_status status = AE_OK;
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+ int result;
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+
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+ if (!device)
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+ return -EINVAL;
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+ printk(EEEPC_NOTICE EEEPC_HOTK_NAME "\n");
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+ ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
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+ if (!ehotk)
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+ return -ENOMEM;
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+ ehotk->handle = device->handle;
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+ strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
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+ strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
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+ acpi_driver_data(device) = ehotk;
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+ ehotk->device = device;
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+ result = eeepc_hotk_check();
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+ if (result)
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+ goto end;
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+ dev_attr_init.show = NULL;
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+ dev_attr_init.store = real_store_init;
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+ status = acpi_install_notify_handler(ehotk->handle, ACPI_SYSTEM_NOTIFY,
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+ eeepc_hotk_notify, ehotk);
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+ if (ACPI_FAILURE(status))
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+ printk(EEEPC_ERR "Error installing notify handler\n");
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+ ehotk_found = 1;
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+ end:
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+ if (result)
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+ kfree(ehotk);
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+ return result;
|
||||
+}
|
||||
+
|
||||
+static int eeepc_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(ehotk->handle, ACPI_SYSTEM_NOTIFY,
|
||||
+ eeepc_hotk_notify);
|
||||
+ if (ACPI_FAILURE(status))
|
||||
+ printk(EEEPC_ERR "Error removing notify handler\n");
|
||||
+ kfree(ehotk);
|
||||
+ return 0;
|
||||
+}
|
||||
+
|
||||
+static struct platform_driver platform_driver = {
|
||||
+ .driver = {
|
||||
+ .name = EEEPC_HOTK_FILE,
|
||||
+ .owner = THIS_MODULE,
|
||||
+ }
|
||||
+};
|
||||
+
|
||||
+static struct platform_device *platform_device;
|
||||
+
|
||||
+static void __exit eeepc_hotk_exit(void)
|
||||
+{
|
||||
+ acpi_bus_unregister_driver(&eeepc_hotk_driver);
|
||||
+ sysfs_remove_group(&platform_device->dev.kobj,
|
||||
+ &platform_attribute_group);
|
||||
+ platform_device_unregister(platform_device);
|
||||
+ platform_driver_unregister(&platform_driver);
|
||||
+}
|
||||
+
|
||||
+static int __init eeepc_hotk_init(void)
|
||||
+{
|
||||
+ struct device *dev;
|
||||
+ int result;
|
||||
+
|
||||
+ if (acpi_disabled)
|
||||
+ return -ENODEV;
|
||||
+ init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
|
||||
+ result = acpi_bus_register_driver(&eeepc_hotk_driver);
|
||||
+ if (result < 0)
|
||||
+ return result;
|
||||
+ if (!ehotk_found) {
|
||||
+ acpi_bus_unregister_driver(&eeepc_hotk_driver);
|
||||
+ return -ENODEV;
|
||||
+ }
|
||||
+ dev = acpi_get_physical_device(ehotk->device->handle);
|
||||
+ /* Register platform stuff */
|
||||
+ result = platform_driver_register(&platform_driver);
|
||||
+ if (result)
|
||||
+ goto fail_platform_driver;
|
||||
+ platform_device = platform_device_alloc(EEEPC_HOTK_FILE, -1);
|
||||
+ if (!platform_device) {
|
||||
+ result = -ENOMEM;
|
||||
+ goto fail_platform_device1;
|
||||
+ }
|
||||
+ result = platform_device_add(platform_device);
|
||||
+ if (result)
|
||||
+ goto fail_platform_device2;
|
||||
+ result = sysfs_create_group(&platform_device->dev.kobj,
|
||||
+ &platform_attribute_group);
|
||||
+ if (result)
|
||||
+ goto fail_sysfs;
|
||||
+ return 0;
|
||||
+ fail_sysfs:
|
||||
+ platform_device_del(platform_device);
|
||||
+ fail_platform_device2:
|
||||
+ platform_device_put(platform_device);
|
||||
+ fail_platform_device1:
|
||||
+ platform_driver_unregister(&platform_driver);
|
||||
+ fail_platform_driver:
|
||||
+ return result;
|
||||
+}
|
||||
+
|
||||
+module_init(eeepc_hotk_init);
|
||||
+module_exit(eeepc_hotk_exit);
|
||||
|
|
@ -39,3 +39,4 @@
|
|||
+ bugfix/all/rtc-x1205-new-style-conversion-checkpatch-fixes.patch
|
||||
+ bugfix/all/mtd-prevent-physmap-from-causing-request_module-runaway-loop-modprobe-net-pf-1.patch
|
||||
+ features/all/firewire-git.patch
|
||||
+ features/all/acpi-eeepc-hotkey.patch
|
||||
|
|
|
|||
Loading…
Reference in New Issue