forked from Minki/linux
7334546a52
OOPS on resume when the wireless adaptor is disabled during suspend was introduced by "eeepc-laptop: read rfkill soft-blocked state on resume". Unable to handle kernel NULL pointer dereference Process s2disk Tainted: G W IP: klist_put Call trace: ? klist_del ? device_del ? device_unregister ? pci_stop_dev ? pci_stop_bus ? pci_remove_device ? eeepc_rfkill_hotplug [eeepc_laptop] ? eeepc_hotk_resume [eeepc_laptop] ? acpi_device_resume ? device_resume ? hibernation_snapshot It appears the PCI device is removed twice. The eeepc_rfkill_hotplug() call from the resume handler is racing against the call from the ACPI notifier callback. The ACPI notification is triggered by the resume handler when it refreshes the value of CM_ASL_WLAN. The fix is to serialize hotplug calls using a workqueue. http://bugzilla.kernel.org/show_bug.cgi?id=13825 Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Acked-by: Corentin Chary <corentin.chary@gmail.com> Signed-off-by: Len Brown <len.brown@intel.com>
1248 lines
28 KiB
C
1248 lines
28 KiB
C
/*
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* eepc-laptop.c - Asus Eee PC extras
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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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* Based on eee.c from eeepc-linux
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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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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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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 <linux/backlight.h>
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#include <linux/fb.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_bus.h>
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#include <linux/uaccess.h>
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#include <linux/input.h>
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#include <linux/rfkill.h>
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#include <linux/pci.h>
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#include <linux/pci_hotplug.h>
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#define EEEPC_LAPTOP_VERSION "0.1"
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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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* Definitions for Asus EeePC
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*/
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#define NOTIFY_WLAN_ON 0x10
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#define NOTIFY_BRN_MIN 0x20
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#define NOTIFY_BRN_MAX 0x2f
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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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DISABLE_ASL_3G = 0x0200,
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DISABLE_ASL_WIMAX = 0x0400,
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DISABLE_ASL_HWCF = 0x0800
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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_3G,
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CM_ASL_WIMAX,
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CM_ASL_HWCF,
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CM_ASL_LID,
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CM_ASL_TYPE,
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CM_ASL_PANELPOWER, /*P901*/
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CM_ASL_TPD
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};
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static const char *cm_getv[] = {
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"WLDG", "BTHG", 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", "M3GG", "WIMG", "HWCF",
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"LIDG", "TYPE", "PBPG", "TPDG"
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};
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static const char *cm_setv[] = {
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"WLDS", "BTHS", 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", "M3GS", "WIMS", NULL,
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NULL, NULL, "PBPS", "TPDS"
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};
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#define EEEPC_EC "\\_SB.PCI0.SBRG.EC0."
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#define EEEPC_EC_FAN_PWM EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */
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#define EEEPC_EC_SC02 0x63
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#define EEEPC_EC_FAN_HRPM EEEPC_EC "SC05" /* High byte, fan speed (RPM) */
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#define EEEPC_EC_FAN_LRPM EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */
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#define EEEPC_EC_FAN_CTRL EEEPC_EC "SFB3" /* Byte containing SF25 */
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#define EEEPC_EC_SFB3 0xD3
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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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uint init_flag; /* Init flags */
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u16 event_count[128]; /* count for each event */
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struct input_dev *inputdev;
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u16 *keycode_map;
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struct rfkill *wlan_rfkill;
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struct rfkill *bluetooth_rfkill;
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struct rfkill *wwan3g_rfkill;
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struct hotplug_slot *hotplug_slot;
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struct work_struct hotplug_work;
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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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/* Platform device/driver */
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static struct platform_driver platform_driver = {
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.driver = {
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.name = EEEPC_HOTK_FILE,
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.owner = THIS_MODULE,
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}
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};
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static struct platform_device *platform_device;
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struct key_entry {
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char type;
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u8 code;
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u16 keycode;
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};
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enum { KE_KEY, KE_END };
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static struct key_entry eeepc_keymap[] = {
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/* Sleep already handled via generic ACPI code */
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{KE_KEY, 0x10, KEY_WLAN },
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{KE_KEY, 0x11, KEY_WLAN },
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{KE_KEY, 0x12, KEY_PROG1 },
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{KE_KEY, 0x13, KEY_MUTE },
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{KE_KEY, 0x14, KEY_VOLUMEDOWN },
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{KE_KEY, 0x15, KEY_VOLUMEUP },
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{KE_KEY, 0x1a, KEY_COFFEE },
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{KE_KEY, 0x1b, KEY_ZOOM },
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{KE_KEY, 0x1c, KEY_PROG2 },
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{KE_KEY, 0x1d, KEY_PROG3 },
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{KE_KEY, NOTIFY_BRN_MIN, KEY_BRIGHTNESSDOWN },
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{KE_KEY, NOTIFY_BRN_MIN + 2, KEY_BRIGHTNESSUP },
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{KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
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{KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
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{KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
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{KE_END, 0},
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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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static int eeepc_hotk_resume(struct acpi_device *device);
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static void eeepc_hotk_notify(struct acpi_device *device, u32 event);
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static const struct acpi_device_id eeepc_device_ids[] = {
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{EEEPC_HOTK_HID, 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
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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 = eeepc_device_ids,
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.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
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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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.resume = eeepc_hotk_resume,
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.notify = eeepc_hotk_notify,
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},
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};
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/* PCI hotplug ops */
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static int eeepc_get_adapter_status(struct hotplug_slot *slot, u8 *value);
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static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
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.owner = THIS_MODULE,
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.get_adapter_status = eeepc_get_adapter_status,
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.get_power_status = eeepc_get_adapter_status,
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};
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/* The backlight device /sys/class/backlight */
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static struct backlight_device *eeepc_backlight_device;
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/* The hwmon device */
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static struct device *eeepc_hwmon_device;
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/*
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* The backlight class declaration
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*/
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static int read_brightness(struct backlight_device *bd);
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static int update_bl_status(struct backlight_device *bd);
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static struct backlight_ops eeepcbl_ops = {
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.get_brightness = read_brightness,
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.update_status = update_bl_status,
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};
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MODULE_AUTHOR("Corentin Chary, 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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* ACPI Helpers
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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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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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status = acpi_evaluate_object(handle, (char *)method, ¶ms, output);
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return (status == AE_OK ? 0 : -1);
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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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acpi_status status;
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unsigned long long result;
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status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
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if (ACPI_FAILURE(status)) {
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*val = -1;
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return -1;
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} else {
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*val = result;
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return 0;
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}
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}
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static int set_acpi(int cm, int value)
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{
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if (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 -ENODEV;
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if (write_acpi_int(ehotk->handle, method, value, NULL))
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pr_warning("Error writing %s\n", method);
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}
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return 0;
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}
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static int get_acpi(int cm)
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{
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int value = -ENODEV;
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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 -ENODEV;
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if (read_acpi_int(ehotk->handle, method, &value))
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pr_warning("Error reading %s\n", method);
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}
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return value;
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}
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/*
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* Backlight
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*/
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static int read_brightness(struct backlight_device *bd)
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{
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return get_acpi(CM_ASL_PANELBRIGHT);
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}
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static int set_brightness(struct backlight_device *bd, int value)
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{
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value = max(0, min(15, value));
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return set_acpi(CM_ASL_PANELBRIGHT, value);
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}
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static int update_bl_status(struct backlight_device *bd)
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{
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return set_brightness(bd, bd->props.brightness);
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}
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/*
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* Rfkill helpers
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*/
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static bool eeepc_wlan_rfkill_blocked(void)
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{
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if (get_acpi(CM_ASL_WLAN) == 1)
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return false;
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return true;
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}
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static int eeepc_rfkill_set(void *data, bool blocked)
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{
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unsigned long asl = (unsigned long)data;
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return set_acpi(asl, !blocked);
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}
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static const struct rfkill_ops eeepc_rfkill_ops = {
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.set_block = eeepc_rfkill_set,
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};
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static void __init eeepc_enable_camera(void)
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{
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/*
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* If the following call to set_acpi() fails, it's because there's no
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* camera so we can ignore the error.
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*/
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set_acpi(CM_ASL_CAMERA, 1);
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}
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/*
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* Sys helpers
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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 (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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static ssize_t store_sys_acpi(int cm, const char *buf, size_t count)
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{
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int rv, value;
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rv = parse_arg(buf, count, &value);
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if (rv > 0)
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value = set_acpi(cm, value);
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if (value < 0)
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return value;
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return rv;
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}
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static ssize_t show_sys_acpi(int cm, char *buf)
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{
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int value = get_acpi(cm);
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if (value < 0)
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return value;
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return sprintf(buf, "%d\n", value);
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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_sys_acpi(_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_sys_acpi(_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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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(disp, CM_ASL_DISPLAYSWITCH);
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struct eeepc_cpufv {
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int num;
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int cur;
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};
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static int get_cpufv(struct eeepc_cpufv *c)
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{
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c->cur = get_acpi(CM_ASL_CPUFV);
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c->num = (c->cur >> 8) & 0xff;
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c->cur &= 0xff;
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if (c->cur < 0 || c->num <= 0 || c->num > 12)
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return -ENODEV;
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return 0;
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}
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static ssize_t show_available_cpufv(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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struct eeepc_cpufv c;
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int i;
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ssize_t len = 0;
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if (get_cpufv(&c))
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return -ENODEV;
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for (i = 0; i < c.num; i++)
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len += sprintf(buf + len, "%d ", i);
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len += sprintf(buf + len, "\n");
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return len;
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}
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static ssize_t show_cpufv(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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struct eeepc_cpufv c;
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if (get_cpufv(&c))
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return -ENODEV;
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return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
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}
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static ssize_t store_cpufv(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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struct eeepc_cpufv c;
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int rv, value;
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if (get_cpufv(&c))
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return -ENODEV;
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rv = parse_arg(buf, count, &value);
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if (rv < 0)
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return rv;
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if (!rv || value < 0 || value >= c.num)
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return -EINVAL;
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set_acpi(CM_ASL_CPUFV, value);
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return rv;
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}
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|
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static struct device_attribute dev_attr_cpufv = {
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.attr = {
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.name = "cpufv",
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.mode = 0644 },
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.show = show_cpufv,
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.store = store_cpufv
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};
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|
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static struct device_attribute dev_attr_available_cpufv = {
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.attr = {
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|
.name = "available_cpufv",
|
|
.mode = 0444 },
|
|
.show = show_available_cpufv
|
|
};
|
|
|
|
static struct attribute *platform_attributes[] = {
|
|
&dev_attr_camera.attr,
|
|
&dev_attr_cardr.attr,
|
|
&dev_attr_disp.attr,
|
|
&dev_attr_cpufv.attr,
|
|
&dev_attr_available_cpufv.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group platform_attribute_group = {
|
|
.attrs = platform_attributes
|
|
};
|
|
|
|
/*
|
|
* Hotkey functions
|
|
*/
|
|
static struct key_entry *eepc_get_entry_by_scancode(int code)
|
|
{
|
|
struct key_entry *key;
|
|
|
|
for (key = eeepc_keymap; key->type != KE_END; key++)
|
|
if (code == key->code)
|
|
return key;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct key_entry *eepc_get_entry_by_keycode(int code)
|
|
{
|
|
struct key_entry *key;
|
|
|
|
for (key = eeepc_keymap; key->type != KE_END; key++)
|
|
if (code == key->keycode && key->type == KE_KEY)
|
|
return key;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int eeepc_getkeycode(struct input_dev *dev, int scancode, int *keycode)
|
|
{
|
|
struct key_entry *key = eepc_get_entry_by_scancode(scancode);
|
|
|
|
if (key && key->type == KE_KEY) {
|
|
*keycode = key->keycode;
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int eeepc_setkeycode(struct input_dev *dev, int scancode, int keycode)
|
|
{
|
|
struct key_entry *key;
|
|
int old_keycode;
|
|
|
|
if (keycode < 0 || keycode > KEY_MAX)
|
|
return -EINVAL;
|
|
|
|
key = eepc_get_entry_by_scancode(scancode);
|
|
if (key && key->type == KE_KEY) {
|
|
old_keycode = key->keycode;
|
|
key->keycode = keycode;
|
|
set_bit(keycode, dev->keybit);
|
|
if (!eepc_get_entry_by_keycode(old_keycode))
|
|
clear_bit(old_keycode, dev->keybit);
|
|
return 0;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void cmsg_quirk(int cm, const char *name)
|
|
{
|
|
int dummy;
|
|
|
|
/* Some BIOSes do not report cm although it is avaliable.
|
|
Check if cm_getv[cm] works and, if yes, assume cm should be set. */
|
|
if (!(ehotk->cm_supported & (1 << cm))
|
|
&& !read_acpi_int(ehotk->handle, cm_getv[cm], &dummy)) {
|
|
pr_info("%s (%x) not reported by BIOS,"
|
|
" enabling anyway\n", name, 1 << cm);
|
|
ehotk->cm_supported |= 1 << cm;
|
|
}
|
|
}
|
|
|
|
static void cmsg_quirks(void)
|
|
{
|
|
cmsg_quirk(CM_ASL_LID, "LID");
|
|
cmsg_quirk(CM_ASL_TYPE, "TYPE");
|
|
cmsg_quirk(CM_ASL_PANELPOWER, "PANELPOWER");
|
|
cmsg_quirk(CM_ASL_TPD, "TPD");
|
|
}
|
|
|
|
static int eeepc_hotk_check(void)
|
|
{
|
|
const struct key_entry *key;
|
|
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
int result;
|
|
|
|
result = acpi_bus_get_status(ehotk->device);
|
|
if (result)
|
|
return result;
|
|
if (ehotk->device->status.present) {
|
|
if (write_acpi_int(ehotk->handle, "INIT", ehotk->init_flag,
|
|
&buffer)) {
|
|
pr_err("Hotkey initialization failed\n");
|
|
return -ENODEV;
|
|
} else {
|
|
pr_notice("Hotkey init flags 0x%x\n", ehotk->init_flag);
|
|
}
|
|
/* get control methods supported */
|
|
if (read_acpi_int(ehotk->handle, "CMSG"
|
|
, &ehotk->cm_supported)) {
|
|
pr_err("Get control methods supported failed\n");
|
|
return -ENODEV;
|
|
} else {
|
|
cmsg_quirks();
|
|
pr_info("Get control methods supported: 0x%x\n",
|
|
ehotk->cm_supported);
|
|
}
|
|
ehotk->inputdev = input_allocate_device();
|
|
if (!ehotk->inputdev) {
|
|
pr_info("Unable to allocate input device\n");
|
|
return 0;
|
|
}
|
|
ehotk->inputdev->name = "Asus EeePC extra buttons";
|
|
ehotk->inputdev->phys = EEEPC_HOTK_FILE "/input0";
|
|
ehotk->inputdev->id.bustype = BUS_HOST;
|
|
ehotk->inputdev->getkeycode = eeepc_getkeycode;
|
|
ehotk->inputdev->setkeycode = eeepc_setkeycode;
|
|
|
|
for (key = eeepc_keymap; key->type != KE_END; key++) {
|
|
switch (key->type) {
|
|
case KE_KEY:
|
|
set_bit(EV_KEY, ehotk->inputdev->evbit);
|
|
set_bit(key->keycode, ehotk->inputdev->keybit);
|
|
break;
|
|
}
|
|
}
|
|
result = input_register_device(ehotk->inputdev);
|
|
if (result) {
|
|
pr_info("Unable to register input device\n");
|
|
input_free_device(ehotk->inputdev);
|
|
return 0;
|
|
}
|
|
} else {
|
|
pr_err("Hotkey device not present, aborting\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int notify_brn(void)
|
|
{
|
|
/* returns the *previous* brightness, or -1 */
|
|
struct backlight_device *bd = eeepc_backlight_device;
|
|
if (bd) {
|
|
int old = bd->props.brightness;
|
|
bd->props.brightness = read_brightness(bd);
|
|
return old;
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
|
|
u8 *value)
|
|
{
|
|
int val = get_acpi(CM_ASL_WLAN);
|
|
|
|
if (val == 1 || val == 0)
|
|
*value = val;
|
|
else
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void eeepc_hotplug_work(struct work_struct *work)
|
|
{
|
|
struct pci_dev *dev;
|
|
struct pci_bus *bus = pci_find_bus(0, 1);
|
|
bool blocked;
|
|
|
|
if (!bus) {
|
|
pr_warning("Unable to find PCI bus 1?\n");
|
|
return;
|
|
}
|
|
|
|
blocked = eeepc_wlan_rfkill_blocked();
|
|
if (!blocked) {
|
|
dev = pci_get_slot(bus, 0);
|
|
if (dev) {
|
|
/* Device already present */
|
|
pci_dev_put(dev);
|
|
return;
|
|
}
|
|
dev = pci_scan_single_device(bus, 0);
|
|
if (dev) {
|
|
pci_bus_assign_resources(bus);
|
|
if (pci_bus_add_device(dev))
|
|
pr_err("Unable to hotplug wifi\n");
|
|
}
|
|
} else {
|
|
dev = pci_get_slot(bus, 0);
|
|
if (dev) {
|
|
pci_remove_bus_device(dev);
|
|
pci_dev_put(dev);
|
|
}
|
|
}
|
|
|
|
rfkill_set_sw_state(ehotk->wlan_rfkill, blocked);
|
|
}
|
|
|
|
static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
|
|
{
|
|
if (event != ACPI_NOTIFY_BUS_CHECK)
|
|
return;
|
|
|
|
schedule_work(&ehotk->hotplug_work);
|
|
}
|
|
|
|
static void eeepc_hotk_notify(struct acpi_device *device, u32 event)
|
|
{
|
|
static struct key_entry *key;
|
|
u16 count;
|
|
int brn = -ENODEV;
|
|
|
|
if (!ehotk)
|
|
return;
|
|
if (event > ACPI_MAX_SYS_NOTIFY)
|
|
return;
|
|
if (event >= NOTIFY_BRN_MIN && event <= NOTIFY_BRN_MAX)
|
|
brn = notify_brn();
|
|
count = ehotk->event_count[event % 128]++;
|
|
acpi_bus_generate_proc_event(ehotk->device, event, count);
|
|
acpi_bus_generate_netlink_event(ehotk->device->pnp.device_class,
|
|
dev_name(&ehotk->device->dev), event,
|
|
count);
|
|
if (ehotk->inputdev) {
|
|
if (brn != -ENODEV) {
|
|
/* brightness-change events need special
|
|
* handling for conversion to key events
|
|
*/
|
|
if (brn < 0)
|
|
brn = event;
|
|
else
|
|
brn += NOTIFY_BRN_MIN;
|
|
if (event < brn)
|
|
event = NOTIFY_BRN_MIN; /* brightness down */
|
|
else if (event > brn)
|
|
event = NOTIFY_BRN_MIN + 2; /* ... up */
|
|
else
|
|
event = NOTIFY_BRN_MIN + 1; /* ... unchanged */
|
|
}
|
|
key = eepc_get_entry_by_scancode(event);
|
|
if (key) {
|
|
switch (key->type) {
|
|
case KE_KEY:
|
|
input_report_key(ehotk->inputdev, key->keycode,
|
|
1);
|
|
input_sync(ehotk->inputdev);
|
|
input_report_key(ehotk->inputdev, key->keycode,
|
|
0);
|
|
input_sync(ehotk->inputdev);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int eeepc_register_rfkill_notifier(char *node)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
acpi_handle handle;
|
|
|
|
status = acpi_get_handle(NULL, node, &handle);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
status = acpi_install_notify_handler(handle,
|
|
ACPI_SYSTEM_NOTIFY,
|
|
eeepc_rfkill_notify,
|
|
NULL);
|
|
if (ACPI_FAILURE(status))
|
|
pr_warning("Failed to register notify on %s\n", node);
|
|
} else
|
|
return -ENODEV;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void eeepc_unregister_rfkill_notifier(char *node)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
acpi_handle handle;
|
|
|
|
status = acpi_get_handle(NULL, node, &handle);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
status = acpi_remove_notify_handler(handle,
|
|
ACPI_SYSTEM_NOTIFY,
|
|
eeepc_rfkill_notify);
|
|
if (ACPI_FAILURE(status))
|
|
pr_err("Error removing rfkill notify handler %s\n",
|
|
node);
|
|
}
|
|
}
|
|
|
|
static void eeepc_cleanup_pci_hotplug(struct hotplug_slot *hotplug_slot)
|
|
{
|
|
kfree(hotplug_slot->info);
|
|
kfree(hotplug_slot);
|
|
}
|
|
|
|
static int eeepc_setup_pci_hotplug(void)
|
|
{
|
|
int ret = -ENOMEM;
|
|
struct pci_bus *bus = pci_find_bus(0, 1);
|
|
|
|
if (!bus) {
|
|
pr_err("Unable to find wifi PCI bus\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
ehotk->hotplug_slot = kzalloc(sizeof(struct hotplug_slot), GFP_KERNEL);
|
|
if (!ehotk->hotplug_slot)
|
|
goto error_slot;
|
|
|
|
ehotk->hotplug_slot->info = kzalloc(sizeof(struct hotplug_slot_info),
|
|
GFP_KERNEL);
|
|
if (!ehotk->hotplug_slot->info)
|
|
goto error_info;
|
|
|
|
ehotk->hotplug_slot->private = ehotk;
|
|
ehotk->hotplug_slot->release = &eeepc_cleanup_pci_hotplug;
|
|
ehotk->hotplug_slot->ops = &eeepc_hotplug_slot_ops;
|
|
eeepc_get_adapter_status(ehotk->hotplug_slot,
|
|
&ehotk->hotplug_slot->info->adapter_status);
|
|
|
|
ret = pci_hp_register(ehotk->hotplug_slot, bus, 0, "eeepc-wifi");
|
|
if (ret) {
|
|
pr_err("Unable to register hotplug slot - %d\n", ret);
|
|
goto error_register;
|
|
}
|
|
|
|
return 0;
|
|
|
|
error_register:
|
|
kfree(ehotk->hotplug_slot->info);
|
|
error_info:
|
|
kfree(ehotk->hotplug_slot);
|
|
ehotk->hotplug_slot = NULL;
|
|
error_slot:
|
|
return ret;
|
|
}
|
|
|
|
static int eeepc_hotk_add(struct acpi_device *device)
|
|
{
|
|
int result;
|
|
|
|
if (!device)
|
|
return -EINVAL;
|
|
pr_notice(EEEPC_HOTK_NAME "\n");
|
|
ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL);
|
|
if (!ehotk)
|
|
return -ENOMEM;
|
|
ehotk->init_flag = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
|
|
ehotk->handle = device->handle;
|
|
strcpy(acpi_device_name(device), EEEPC_HOTK_DEVICE_NAME);
|
|
strcpy(acpi_device_class(device), EEEPC_HOTK_CLASS);
|
|
device->driver_data = ehotk;
|
|
ehotk->device = device;
|
|
result = eeepc_hotk_check();
|
|
if (result)
|
|
goto ehotk_fail;
|
|
|
|
return 0;
|
|
|
|
ehotk_fail:
|
|
kfree(ehotk);
|
|
ehotk = NULL;
|
|
|
|
return result;
|
|
}
|
|
|
|
static int eeepc_hotk_remove(struct acpi_device *device, int type)
|
|
{
|
|
if (!device || !acpi_driver_data(device))
|
|
return -EINVAL;
|
|
|
|
kfree(ehotk);
|
|
return 0;
|
|
}
|
|
|
|
static int eeepc_hotk_resume(struct acpi_device *device)
|
|
{
|
|
if (ehotk->wlan_rfkill) {
|
|
bool wlan;
|
|
|
|
/* Workaround - it seems that _PTS disables the wireless
|
|
without notification or changing the value read by WLAN.
|
|
Normally this is fine because the correct value is restored
|
|
from the non-volatile storage on resume, but we need to do
|
|
it ourself if case suspend is aborted, or we lose wireless.
|
|
*/
|
|
wlan = get_acpi(CM_ASL_WLAN);
|
|
set_acpi(CM_ASL_WLAN, wlan);
|
|
|
|
rfkill_set_sw_state(ehotk->wlan_rfkill, wlan != 1);
|
|
|
|
schedule_work(&ehotk->hotplug_work);
|
|
}
|
|
|
|
if (ehotk->bluetooth_rfkill)
|
|
rfkill_set_sw_state(ehotk->bluetooth_rfkill,
|
|
get_acpi(CM_ASL_BLUETOOTH) != 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Hwmon
|
|
*/
|
|
static int eeepc_get_fan_pwm(void)
|
|
{
|
|
int value = 0;
|
|
|
|
read_acpi_int(NULL, EEEPC_EC_FAN_PWM, &value);
|
|
value = value * 255 / 100;
|
|
return (value);
|
|
}
|
|
|
|
static void eeepc_set_fan_pwm(int value)
|
|
{
|
|
value = SENSORS_LIMIT(value, 0, 255);
|
|
value = value * 100 / 255;
|
|
ec_write(EEEPC_EC_SC02, value);
|
|
}
|
|
|
|
static int eeepc_get_fan_rpm(void)
|
|
{
|
|
int high = 0;
|
|
int low = 0;
|
|
|
|
read_acpi_int(NULL, EEEPC_EC_FAN_HRPM, &high);
|
|
read_acpi_int(NULL, EEEPC_EC_FAN_LRPM, &low);
|
|
return (high << 8 | low);
|
|
}
|
|
|
|
static int eeepc_get_fan_ctrl(void)
|
|
{
|
|
int value = 0;
|
|
|
|
read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
|
|
return ((value & 0x02 ? 1 : 0));
|
|
}
|
|
|
|
static void eeepc_set_fan_ctrl(int manual)
|
|
{
|
|
int value = 0;
|
|
|
|
read_acpi_int(NULL, EEEPC_EC_FAN_CTRL, &value);
|
|
if (manual)
|
|
value |= 0x02;
|
|
else
|
|
value &= ~0x02;
|
|
ec_write(EEEPC_EC_SFB3, value);
|
|
}
|
|
|
|
static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
|
|
{
|
|
int rv, value;
|
|
|
|
rv = parse_arg(buf, count, &value);
|
|
if (rv > 0)
|
|
set(value);
|
|
return rv;
|
|
}
|
|
|
|
static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
|
|
{
|
|
return sprintf(buf, "%d\n", get());
|
|
}
|
|
|
|
#define EEEPC_CREATE_SENSOR_ATTR(_name, _mode, _set, _get) \
|
|
static ssize_t show_##_name(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
return show_sys_hwmon(_set, buf); \
|
|
} \
|
|
static ssize_t store_##_name(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
return store_sys_hwmon(_get, buf, count); \
|
|
} \
|
|
static SENSOR_DEVICE_ATTR(_name, _mode, show_##_name, store_##_name, 0);
|
|
|
|
EEEPC_CREATE_SENSOR_ATTR(fan1_input, S_IRUGO, eeepc_get_fan_rpm, NULL);
|
|
EEEPC_CREATE_SENSOR_ATTR(pwm1, S_IRUGO | S_IWUSR,
|
|
eeepc_get_fan_pwm, eeepc_set_fan_pwm);
|
|
EEEPC_CREATE_SENSOR_ATTR(pwm1_enable, S_IRUGO | S_IWUSR,
|
|
eeepc_get_fan_ctrl, eeepc_set_fan_ctrl);
|
|
|
|
static ssize_t
|
|
show_name(struct device *dev, struct device_attribute *attr, char *buf)
|
|
{
|
|
return sprintf(buf, "eeepc\n");
|
|
}
|
|
static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
|
|
|
|
static struct attribute *hwmon_attributes[] = {
|
|
&sensor_dev_attr_pwm1.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
|
|
&sensor_dev_attr_name.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group hwmon_attribute_group = {
|
|
.attrs = hwmon_attributes
|
|
};
|
|
|
|
/*
|
|
* exit/init
|
|
*/
|
|
static void eeepc_backlight_exit(void)
|
|
{
|
|
if (eeepc_backlight_device)
|
|
backlight_device_unregister(eeepc_backlight_device);
|
|
eeepc_backlight_device = NULL;
|
|
}
|
|
|
|
static void eeepc_rfkill_exit(void)
|
|
{
|
|
eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
|
|
eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
|
|
if (ehotk->wlan_rfkill)
|
|
rfkill_unregister(ehotk->wlan_rfkill);
|
|
if (ehotk->bluetooth_rfkill)
|
|
rfkill_unregister(ehotk->bluetooth_rfkill);
|
|
if (ehotk->wwan3g_rfkill)
|
|
rfkill_unregister(ehotk->wwan3g_rfkill);
|
|
if (ehotk->hotplug_slot)
|
|
pci_hp_deregister(ehotk->hotplug_slot);
|
|
}
|
|
|
|
static void eeepc_input_exit(void)
|
|
{
|
|
if (ehotk->inputdev)
|
|
input_unregister_device(ehotk->inputdev);
|
|
}
|
|
|
|
static void eeepc_hwmon_exit(void)
|
|
{
|
|
struct device *hwmon;
|
|
|
|
hwmon = eeepc_hwmon_device;
|
|
if (!hwmon)
|
|
return ;
|
|
sysfs_remove_group(&hwmon->kobj,
|
|
&hwmon_attribute_group);
|
|
hwmon_device_unregister(hwmon);
|
|
eeepc_hwmon_device = NULL;
|
|
}
|
|
|
|
static void __exit eeepc_laptop_exit(void)
|
|
{
|
|
eeepc_backlight_exit();
|
|
eeepc_rfkill_exit();
|
|
eeepc_input_exit();
|
|
eeepc_hwmon_exit();
|
|
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 eeepc_new_rfkill(struct rfkill **rfkill,
|
|
const char *name, struct device *dev,
|
|
enum rfkill_type type, int cm)
|
|
{
|
|
int result;
|
|
|
|
result = get_acpi(cm);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
*rfkill = rfkill_alloc(name, dev, type,
|
|
&eeepc_rfkill_ops, (void *)(unsigned long)cm);
|
|
|
|
if (!*rfkill)
|
|
return -EINVAL;
|
|
|
|
rfkill_init_sw_state(*rfkill, get_acpi(cm) != 1);
|
|
result = rfkill_register(*rfkill);
|
|
if (result) {
|
|
rfkill_destroy(*rfkill);
|
|
*rfkill = NULL;
|
|
return result;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int eeepc_rfkill_init(struct device *dev)
|
|
{
|
|
int result = 0;
|
|
|
|
INIT_WORK(&ehotk->hotplug_work, eeepc_hotplug_work);
|
|
|
|
eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
|
|
eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
|
|
|
|
result = eeepc_new_rfkill(&ehotk->wlan_rfkill,
|
|
"eeepc-wlan", dev,
|
|
RFKILL_TYPE_WLAN, CM_ASL_WLAN);
|
|
|
|
if (result && result != -ENODEV)
|
|
goto exit;
|
|
|
|
result = eeepc_new_rfkill(&ehotk->bluetooth_rfkill,
|
|
"eeepc-bluetooth", dev,
|
|
RFKILL_TYPE_BLUETOOTH, CM_ASL_BLUETOOTH);
|
|
|
|
if (result && result != -ENODEV)
|
|
goto exit;
|
|
|
|
result = eeepc_new_rfkill(&ehotk->wwan3g_rfkill,
|
|
"eeepc-wwan3g", dev,
|
|
RFKILL_TYPE_WWAN, CM_ASL_3G);
|
|
|
|
if (result && result != -ENODEV)
|
|
goto exit;
|
|
|
|
result = eeepc_setup_pci_hotplug();
|
|
/*
|
|
* If we get -EBUSY then something else is handling the PCI hotplug -
|
|
* don't fail in this case
|
|
*/
|
|
if (result == -EBUSY)
|
|
result = 0;
|
|
|
|
exit:
|
|
if (result && result != -ENODEV)
|
|
eeepc_rfkill_exit();
|
|
return result;
|
|
}
|
|
|
|
static int eeepc_backlight_init(struct device *dev)
|
|
{
|
|
struct backlight_device *bd;
|
|
|
|
bd = backlight_device_register(EEEPC_HOTK_FILE, dev,
|
|
NULL, &eeepcbl_ops);
|
|
if (IS_ERR(bd)) {
|
|
pr_err("Could not register eeepc backlight device\n");
|
|
eeepc_backlight_device = NULL;
|
|
return PTR_ERR(bd);
|
|
}
|
|
eeepc_backlight_device = bd;
|
|
bd->props.max_brightness = 15;
|
|
bd->props.brightness = read_brightness(NULL);
|
|
bd->props.power = FB_BLANK_UNBLANK;
|
|
backlight_update_status(bd);
|
|
return 0;
|
|
}
|
|
|
|
static int eeepc_hwmon_init(struct device *dev)
|
|
{
|
|
struct device *hwmon;
|
|
int result;
|
|
|
|
hwmon = hwmon_device_register(dev);
|
|
if (IS_ERR(hwmon)) {
|
|
pr_err("Could not register eeepc hwmon device\n");
|
|
eeepc_hwmon_device = NULL;
|
|
return PTR_ERR(hwmon);
|
|
}
|
|
eeepc_hwmon_device = hwmon;
|
|
result = sysfs_create_group(&hwmon->kobj,
|
|
&hwmon_attribute_group);
|
|
if (result)
|
|
eeepc_hwmon_exit();
|
|
return result;
|
|
}
|
|
|
|
static int __init eeepc_laptop_init(void)
|
|
{
|
|
struct device *dev;
|
|
int result;
|
|
|
|
if (acpi_disabled)
|
|
return -ENODEV;
|
|
result = acpi_bus_register_driver(&eeepc_hotk_driver);
|
|
if (result < 0)
|
|
return result;
|
|
if (!ehotk) {
|
|
acpi_bus_unregister_driver(&eeepc_hotk_driver);
|
|
return -ENODEV;
|
|
}
|
|
|
|
eeepc_enable_camera();
|
|
|
|
/* 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;
|
|
|
|
dev = &platform_device->dev;
|
|
|
|
if (!acpi_video_backlight_support()) {
|
|
result = eeepc_backlight_init(dev);
|
|
if (result)
|
|
goto fail_backlight;
|
|
} else
|
|
pr_info("Backlight controlled by ACPI video "
|
|
"driver\n");
|
|
|
|
result = eeepc_hwmon_init(dev);
|
|
if (result)
|
|
goto fail_hwmon;
|
|
|
|
result = eeepc_rfkill_init(dev);
|
|
if (result)
|
|
goto fail_rfkill;
|
|
|
|
return 0;
|
|
fail_rfkill:
|
|
eeepc_hwmon_exit();
|
|
fail_hwmon:
|
|
eeepc_backlight_exit();
|
|
fail_backlight:
|
|
sysfs_remove_group(&platform_device->dev.kobj,
|
|
&platform_attribute_group);
|
|
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:
|
|
eeepc_input_exit();
|
|
return result;
|
|
}
|
|
|
|
module_init(eeepc_laptop_init);
|
|
module_exit(eeepc_laptop_exit);
|