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![Lukas Wunner](/assets/img/avatar_default.png)
When the PCI hotplug core and its first user, cpqphp, were introduced in February 2002 with historic commit a8a2069f432c, cpqphp allocated a slot struct for its internal use plus a hotplug_slot struct to be registered with the hotplug core and linked the two with pointers: https://git.kernel.org/tglx/history/c/a8a2069f432c Nowadays, the predominant pattern in the tree is to embed ("subclass") such structures in one another and cast to the containing struct with container_of(). But it wasn't until July 2002 that container_of() was introduced with historic commit ec4f214232cf: https://git.kernel.org/tglx/history/c/ec4f214232cf pnv_php, introduced in 2016, did the right thing and embedded struct hotplug_slot in its internal struct pnv_php_slot, but all other drivers cargo-culted cpqphp's design and linked separate structs with pointers. Embedding structs is preferrable to linking them with pointers because it requires fewer allocations, thereby reducing overhead and simplifying error paths. Casting an embedded struct to the containing struct becomes a cheap subtraction rather than a dereference. And having fewer pointers reduces the risk of them pointing nowhere either accidentally or due to an attack. Convert all drivers to embed struct hotplug_slot in their internal slot struct. The "private" pointer in struct hotplug_slot thereby becomes unused, so drop it. Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> # drivers/pci/hotplug/rpa* Acked-by: Sebastian Ott <sebott@linux.ibm.com> # drivers/pci/hotplug/s390* Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com> # drivers/platform/x86 Cc: Len Brown <lenb@kernel.org> Cc: Scott Murray <scott@spiteful.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Oliver OHalloran <oliveroh@au1.ibm.com> Cc: Gavin Shan <gwshan@linux.vnet.ibm.com> Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Corentin Chary <corentin.chary@gmail.com> Cc: Darren Hart <dvhart@infradead.org>
1522 lines
36 KiB
C
1522 lines
36 KiB
C
/*
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* eeepc-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 <linux/slab.h>
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#include <linux/acpi.h>
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#include <linux/uaccess.h>
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#include <linux/input.h>
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#include <linux/input/sparse-keymap.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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#include <linux/leds.h>
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#include <linux/dmi.h>
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#include <acpi/video.h>
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#define EEEPC_LAPTOP_VERSION "0.1"
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#define EEEPC_LAPTOP_NAME "Eee PC Hotkey Driver"
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#define EEEPC_LAPTOP_FILE "eeepc"
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#define EEEPC_ACPI_CLASS "hotkey"
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#define EEEPC_ACPI_DEVICE_NAME "Hotkey"
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#define EEEPC_ACPI_HID "ASUS010"
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MODULE_AUTHOR("Corentin Chary, Eric Cooper");
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MODULE_DESCRIPTION(EEEPC_LAPTOP_NAME);
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MODULE_LICENSE("GPL");
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static bool hotplug_disabled;
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module_param(hotplug_disabled, bool, 0444);
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MODULE_PARM_DESC(hotplug_disabled,
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"Disable hotplug for wireless device. "
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"If your laptop need that, please report to "
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"acpi4asus-user@lists.sourceforge.net.");
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/*
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* Definitions for Asus EeePC
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*/
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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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static const struct key_entry eeepc_keymap[] = {
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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, 0x16, { KEY_DISPLAY_OFF } },
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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_MAX, { 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_KEY, 0x37, { KEY_F13 } }, /* Disable Touchpad */
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{ KE_KEY, 0x38, { KEY_F14 } },
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{ KE_IGNORE, 0x50, { KEY_RESERVED } }, /* AC plugged */
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{ KE_IGNORE, 0x51, { KEY_RESERVED } }, /* AC unplugged */
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{ KE_END, 0 },
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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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*/
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struct eeepc_laptop {
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acpi_handle handle; /* the handle of the acpi device */
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u32 cm_supported; /* the control methods supported
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by this BIOS */
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bool cpufv_disabled;
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bool hotplug_disabled;
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u16 event_count[128]; /* count for each event */
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struct platform_device *platform_device;
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struct acpi_device *device; /* the device we are in */
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struct backlight_device *backlight_device;
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struct input_dev *inputdev;
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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 rfkill *wimax_rfkill;
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struct hotplug_slot hotplug_slot;
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struct mutex hotplug_lock;
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struct led_classdev tpd_led;
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int tpd_led_wk;
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struct workqueue_struct *led_workqueue;
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struct work_struct tpd_led_work;
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};
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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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{
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acpi_status status;
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status = acpi_execute_simple_method(handle, (char *)method, val);
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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(struct eeepc_laptop *eeepc, int cm, int value)
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{
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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 ((eeepc->cm_supported & (0x1 << cm)) == 0)
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return -ENODEV;
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if (write_acpi_int(eeepc->handle, method, value))
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pr_warn("Error writing %s\n", method);
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return 0;
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}
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static int get_acpi(struct eeepc_laptop *eeepc, int cm)
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{
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const char *method = cm_getv[cm];
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int value;
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if (method == NULL)
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return -ENODEV;
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if ((eeepc->cm_supported & (0x1 << cm)) == 0)
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return -ENODEV;
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if (read_acpi_int(eeepc->handle, method, &value))
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pr_warn("Error reading %s\n", method);
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return value;
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}
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static int acpi_setter_handle(struct eeepc_laptop *eeepc, int cm,
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acpi_handle *handle)
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{
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const char *method = cm_setv[cm];
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acpi_status status;
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if (method == NULL)
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return -ENODEV;
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if ((eeepc->cm_supported & (0x1 << cm)) == 0)
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return -ENODEV;
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status = acpi_get_handle(eeepc->handle, (char *)method,
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handle);
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if (status != AE_OK) {
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pr_warn("Error finding %s\n", method);
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return -ENODEV;
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}
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return 0;
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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, int *val)
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{
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if (sscanf(buf, "%i", val) != 1)
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return -EINVAL;
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return 0;
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}
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static ssize_t store_sys_acpi(struct device *dev, int cm,
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const char *buf, size_t count)
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{
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struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
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int rv, value;
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rv = parse_arg(buf, &value);
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if (rv < 0)
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return rv;
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rv = set_acpi(eeepc, cm, value);
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if (rv < 0)
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return -EIO;
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return count;
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}
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static ssize_t show_sys_acpi(struct device *dev, int cm, char *buf)
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{
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struct eeepc_laptop *eeepc = dev_get_drvdata(dev);
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int value = get_acpi(eeepc, cm);
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if (value < 0)
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return -EIO;
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return sprintf(buf, "%d\n", value);
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}
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#define EEEPC_ACPI_SHOW_FUNC(_name, _cm) \
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static ssize_t _name##_show(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(dev, _cm, buf); \
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}
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#define EEEPC_ACPI_STORE_FUNC(_name, _cm) \
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static ssize_t _name##_store(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(dev, _cm, buf, count); \
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}
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#define EEEPC_CREATE_DEVICE_ATTR_RW(_name, _cm) \
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EEEPC_ACPI_SHOW_FUNC(_name, _cm) \
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EEEPC_ACPI_STORE_FUNC(_name, _cm) \
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static DEVICE_ATTR_RW(_name)
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#define EEEPC_CREATE_DEVICE_ATTR_WO(_name, _cm) \
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EEEPC_ACPI_STORE_FUNC(_name, _cm) \
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static DEVICE_ATTR_WO(_name)
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EEEPC_CREATE_DEVICE_ATTR_RW(camera, CM_ASL_CAMERA);
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EEEPC_CREATE_DEVICE_ATTR_RW(cardr, CM_ASL_CARDREADER);
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EEEPC_CREATE_DEVICE_ATTR_WO(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_laptop *eeepc, struct eeepc_cpufv *c)
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{
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c->cur = get_acpi(eeepc, CM_ASL_CPUFV);
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if (c->cur < 0)
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return -ENODEV;
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c->num = (c->cur >> 8) & 0xff;
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c->cur &= 0xff;
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if (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 available_cpufv_show(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_laptop *eeepc = dev_get_drvdata(dev);
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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(eeepc, &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 cpufv_show(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_laptop *eeepc = dev_get_drvdata(dev);
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struct eeepc_cpufv c;
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if (get_cpufv(eeepc, &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 cpufv_store(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_laptop *eeepc = dev_get_drvdata(dev);
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struct eeepc_cpufv c;
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int rv, value;
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if (eeepc->cpufv_disabled)
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return -EPERM;
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if (get_cpufv(eeepc, &c))
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return -ENODEV;
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rv = parse_arg(buf, &value);
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if (rv < 0)
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return rv;
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if (value < 0 || value >= c.num)
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return -EINVAL;
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rv = set_acpi(eeepc, CM_ASL_CPUFV, value);
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if (rv)
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return rv;
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return count;
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}
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static ssize_t cpufv_disabled_show(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_laptop *eeepc = dev_get_drvdata(dev);
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return sprintf(buf, "%d\n", eeepc->cpufv_disabled);
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}
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static ssize_t cpufv_disabled_store(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_laptop *eeepc = dev_get_drvdata(dev);
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int rv, value;
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rv = parse_arg(buf, &value);
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if (rv < 0)
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return rv;
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switch (value) {
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case 0:
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if (eeepc->cpufv_disabled)
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pr_warn("cpufv enabled (not officially supported on this model)\n");
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eeepc->cpufv_disabled = false;
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return count;
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case 1:
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return -EPERM;
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default:
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return -EINVAL;
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}
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}
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static DEVICE_ATTR_RW(cpufv);
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static DEVICE_ATTR_RO(available_cpufv);
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static DEVICE_ATTR_RW(cpufv_disabled);
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static struct attribute *platform_attributes[] = {
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&dev_attr_camera.attr,
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&dev_attr_cardr.attr,
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&dev_attr_disp.attr,
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&dev_attr_cpufv.attr,
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&dev_attr_available_cpufv.attr,
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&dev_attr_cpufv_disabled.attr,
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NULL
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};
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static const struct attribute_group platform_attribute_group = {
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.attrs = platform_attributes
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};
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|
|
|
static int eeepc_platform_init(struct eeepc_laptop *eeepc)
|
|
{
|
|
int result;
|
|
|
|
eeepc->platform_device = platform_device_alloc(EEEPC_LAPTOP_FILE, -1);
|
|
if (!eeepc->platform_device)
|
|
return -ENOMEM;
|
|
platform_set_drvdata(eeepc->platform_device, eeepc);
|
|
|
|
result = platform_device_add(eeepc->platform_device);
|
|
if (result)
|
|
goto fail_platform_device;
|
|
|
|
result = sysfs_create_group(&eeepc->platform_device->dev.kobj,
|
|
&platform_attribute_group);
|
|
if (result)
|
|
goto fail_sysfs;
|
|
return 0;
|
|
|
|
fail_sysfs:
|
|
platform_device_del(eeepc->platform_device);
|
|
fail_platform_device:
|
|
platform_device_put(eeepc->platform_device);
|
|
return result;
|
|
}
|
|
|
|
static void eeepc_platform_exit(struct eeepc_laptop *eeepc)
|
|
{
|
|
sysfs_remove_group(&eeepc->platform_device->dev.kobj,
|
|
&platform_attribute_group);
|
|
platform_device_unregister(eeepc->platform_device);
|
|
}
|
|
|
|
/*
|
|
* LEDs
|
|
*/
|
|
/*
|
|
* These functions actually update the LED's, and are called from a
|
|
* workqueue. By doing this as separate work rather than when the LED
|
|
* subsystem asks, we avoid messing with the Asus ACPI stuff during a
|
|
* potentially bad time, such as a timer interrupt.
|
|
*/
|
|
static void tpd_led_update(struct work_struct *work)
|
|
{
|
|
struct eeepc_laptop *eeepc;
|
|
|
|
eeepc = container_of(work, struct eeepc_laptop, tpd_led_work);
|
|
|
|
set_acpi(eeepc, CM_ASL_TPD, eeepc->tpd_led_wk);
|
|
}
|
|
|
|
static void tpd_led_set(struct led_classdev *led_cdev,
|
|
enum led_brightness value)
|
|
{
|
|
struct eeepc_laptop *eeepc;
|
|
|
|
eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
|
|
|
|
eeepc->tpd_led_wk = (value > 0) ? 1 : 0;
|
|
queue_work(eeepc->led_workqueue, &eeepc->tpd_led_work);
|
|
}
|
|
|
|
static enum led_brightness tpd_led_get(struct led_classdev *led_cdev)
|
|
{
|
|
struct eeepc_laptop *eeepc;
|
|
|
|
eeepc = container_of(led_cdev, struct eeepc_laptop, tpd_led);
|
|
|
|
return get_acpi(eeepc, CM_ASL_TPD);
|
|
}
|
|
|
|
static int eeepc_led_init(struct eeepc_laptop *eeepc)
|
|
{
|
|
int rv;
|
|
|
|
if (get_acpi(eeepc, CM_ASL_TPD) == -ENODEV)
|
|
return 0;
|
|
|
|
eeepc->led_workqueue = create_singlethread_workqueue("led_workqueue");
|
|
if (!eeepc->led_workqueue)
|
|
return -ENOMEM;
|
|
INIT_WORK(&eeepc->tpd_led_work, tpd_led_update);
|
|
|
|
eeepc->tpd_led.name = "eeepc::touchpad";
|
|
eeepc->tpd_led.brightness_set = tpd_led_set;
|
|
if (get_acpi(eeepc, CM_ASL_TPD) >= 0) /* if method is available */
|
|
eeepc->tpd_led.brightness_get = tpd_led_get;
|
|
eeepc->tpd_led.max_brightness = 1;
|
|
|
|
rv = led_classdev_register(&eeepc->platform_device->dev,
|
|
&eeepc->tpd_led);
|
|
if (rv) {
|
|
destroy_workqueue(eeepc->led_workqueue);
|
|
return rv;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void eeepc_led_exit(struct eeepc_laptop *eeepc)
|
|
{
|
|
if (!IS_ERR_OR_NULL(eeepc->tpd_led.dev))
|
|
led_classdev_unregister(&eeepc->tpd_led);
|
|
if (eeepc->led_workqueue)
|
|
destroy_workqueue(eeepc->led_workqueue);
|
|
}
|
|
|
|
|
|
/*
|
|
* PCI hotplug (for wlan rfkill)
|
|
*/
|
|
static bool eeepc_wlan_rfkill_blocked(struct eeepc_laptop *eeepc)
|
|
{
|
|
if (get_acpi(eeepc, CM_ASL_WLAN) == 1)
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
static void eeepc_rfkill_hotplug(struct eeepc_laptop *eeepc, acpi_handle handle)
|
|
{
|
|
struct pci_dev *port;
|
|
struct pci_dev *dev;
|
|
struct pci_bus *bus;
|
|
bool blocked = eeepc_wlan_rfkill_blocked(eeepc);
|
|
bool absent;
|
|
u32 l;
|
|
|
|
if (eeepc->wlan_rfkill)
|
|
rfkill_set_sw_state(eeepc->wlan_rfkill, blocked);
|
|
|
|
mutex_lock(&eeepc->hotplug_lock);
|
|
pci_lock_rescan_remove();
|
|
|
|
if (!eeepc->hotplug_slot.ops)
|
|
goto out_unlock;
|
|
|
|
port = acpi_get_pci_dev(handle);
|
|
if (!port) {
|
|
pr_warning("Unable to find port\n");
|
|
goto out_unlock;
|
|
}
|
|
|
|
bus = port->subordinate;
|
|
|
|
if (!bus) {
|
|
pr_warn("Unable to find PCI bus 1?\n");
|
|
goto out_put_dev;
|
|
}
|
|
|
|
if (pci_bus_read_config_dword(bus, 0, PCI_VENDOR_ID, &l)) {
|
|
pr_err("Unable to read PCI config space?\n");
|
|
goto out_put_dev;
|
|
}
|
|
|
|
absent = (l == 0xffffffff);
|
|
|
|
if (blocked != absent) {
|
|
pr_warn("BIOS says wireless lan is %s, but the pci device is %s\n",
|
|
blocked ? "blocked" : "unblocked",
|
|
absent ? "absent" : "present");
|
|
pr_warn("skipped wireless hotplug as probably inappropriate for this model\n");
|
|
goto out_put_dev;
|
|
}
|
|
|
|
if (!blocked) {
|
|
dev = pci_get_slot(bus, 0);
|
|
if (dev) {
|
|
/* Device already present */
|
|
pci_dev_put(dev);
|
|
goto out_put_dev;
|
|
}
|
|
dev = pci_scan_single_device(bus, 0);
|
|
if (dev) {
|
|
pci_bus_assign_resources(bus);
|
|
pci_bus_add_device(dev);
|
|
}
|
|
} else {
|
|
dev = pci_get_slot(bus, 0);
|
|
if (dev) {
|
|
pci_stop_and_remove_bus_device(dev);
|
|
pci_dev_put(dev);
|
|
}
|
|
}
|
|
out_put_dev:
|
|
pci_dev_put(port);
|
|
|
|
out_unlock:
|
|
pci_unlock_rescan_remove();
|
|
mutex_unlock(&eeepc->hotplug_lock);
|
|
}
|
|
|
|
static void eeepc_rfkill_hotplug_update(struct eeepc_laptop *eeepc, char *node)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
acpi_handle handle;
|
|
|
|
status = acpi_get_handle(NULL, node, &handle);
|
|
|
|
if (ACPI_SUCCESS(status))
|
|
eeepc_rfkill_hotplug(eeepc, handle);
|
|
}
|
|
|
|
static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
|
|
{
|
|
struct eeepc_laptop *eeepc = data;
|
|
|
|
if (event != ACPI_NOTIFY_BUS_CHECK)
|
|
return;
|
|
|
|
eeepc_rfkill_hotplug(eeepc, handle);
|
|
}
|
|
|
|
static int eeepc_register_rfkill_notifier(struct eeepc_laptop *eeepc,
|
|
char *node)
|
|
{
|
|
acpi_status status;
|
|
acpi_handle handle;
|
|
|
|
status = acpi_get_handle(NULL, node, &handle);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
return -ENODEV;
|
|
|
|
status = acpi_install_notify_handler(handle,
|
|
ACPI_SYSTEM_NOTIFY,
|
|
eeepc_rfkill_notify,
|
|
eeepc);
|
|
if (ACPI_FAILURE(status))
|
|
pr_warn("Failed to register notify on %s\n", node);
|
|
|
|
/*
|
|
* Refresh pci hotplug in case the rfkill state was
|
|
* changed during setup.
|
|
*/
|
|
eeepc_rfkill_hotplug(eeepc, handle);
|
|
return 0;
|
|
}
|
|
|
|
static void eeepc_unregister_rfkill_notifier(struct eeepc_laptop *eeepc,
|
|
char *node)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
acpi_handle handle;
|
|
|
|
status = acpi_get_handle(NULL, node, &handle);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
return;
|
|
|
|
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);
|
|
/*
|
|
* Refresh pci hotplug in case the rfkill
|
|
* state was changed after
|
|
* eeepc_unregister_rfkill_notifier()
|
|
*/
|
|
eeepc_rfkill_hotplug(eeepc, handle);
|
|
}
|
|
|
|
static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
|
|
u8 *value)
|
|
{
|
|
struct eeepc_laptop *eeepc;
|
|
int val;
|
|
|
|
eeepc = container_of(hotplug_slot, struct eeepc_laptop, hotplug_slot);
|
|
val = get_acpi(eeepc, CM_ASL_WLAN);
|
|
|
|
if (val == 1 || val == 0)
|
|
*value = val;
|
|
else
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
|
|
.get_adapter_status = eeepc_get_adapter_status,
|
|
.get_power_status = eeepc_get_adapter_status,
|
|
};
|
|
|
|
static int eeepc_setup_pci_hotplug(struct eeepc_laptop *eeepc)
|
|
{
|
|
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;
|
|
}
|
|
|
|
eeepc->hotplug_slot.ops = &eeepc_hotplug_slot_ops;
|
|
|
|
ret = pci_hp_register(&eeepc->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:
|
|
eeepc->hotplug_slot.ops = NULL;
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Rfkill devices
|
|
*/
|
|
static int eeepc_rfkill_set(void *data, bool blocked)
|
|
{
|
|
acpi_handle handle = data;
|
|
|
|
return write_acpi_int(handle, NULL, !blocked);
|
|
}
|
|
|
|
static const struct rfkill_ops eeepc_rfkill_ops = {
|
|
.set_block = eeepc_rfkill_set,
|
|
};
|
|
|
|
static int eeepc_new_rfkill(struct eeepc_laptop *eeepc,
|
|
struct rfkill **rfkill,
|
|
const char *name,
|
|
enum rfkill_type type, int cm)
|
|
{
|
|
acpi_handle handle;
|
|
int result;
|
|
|
|
result = acpi_setter_handle(eeepc, cm, &handle);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
*rfkill = rfkill_alloc(name, &eeepc->platform_device->dev, type,
|
|
&eeepc_rfkill_ops, handle);
|
|
|
|
if (!*rfkill)
|
|
return -EINVAL;
|
|
|
|
rfkill_init_sw_state(*rfkill, get_acpi(eeepc, cm) != 1);
|
|
result = rfkill_register(*rfkill);
|
|
if (result) {
|
|
rfkill_destroy(*rfkill);
|
|
*rfkill = NULL;
|
|
return result;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static char EEEPC_RFKILL_NODE_1[] = "\\_SB.PCI0.P0P5";
|
|
static char EEEPC_RFKILL_NODE_2[] = "\\_SB.PCI0.P0P6";
|
|
static char EEEPC_RFKILL_NODE_3[] = "\\_SB.PCI0.P0P7";
|
|
|
|
static void eeepc_rfkill_exit(struct eeepc_laptop *eeepc)
|
|
{
|
|
eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_1);
|
|
eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_2);
|
|
eeepc_unregister_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_3);
|
|
if (eeepc->wlan_rfkill) {
|
|
rfkill_unregister(eeepc->wlan_rfkill);
|
|
rfkill_destroy(eeepc->wlan_rfkill);
|
|
eeepc->wlan_rfkill = NULL;
|
|
}
|
|
|
|
if (eeepc->hotplug_slot.ops)
|
|
pci_hp_deregister(&eeepc->hotplug_slot);
|
|
|
|
if (eeepc->bluetooth_rfkill) {
|
|
rfkill_unregister(eeepc->bluetooth_rfkill);
|
|
rfkill_destroy(eeepc->bluetooth_rfkill);
|
|
eeepc->bluetooth_rfkill = NULL;
|
|
}
|
|
if (eeepc->wwan3g_rfkill) {
|
|
rfkill_unregister(eeepc->wwan3g_rfkill);
|
|
rfkill_destroy(eeepc->wwan3g_rfkill);
|
|
eeepc->wwan3g_rfkill = NULL;
|
|
}
|
|
if (eeepc->wimax_rfkill) {
|
|
rfkill_unregister(eeepc->wimax_rfkill);
|
|
rfkill_destroy(eeepc->wimax_rfkill);
|
|
eeepc->wimax_rfkill = NULL;
|
|
}
|
|
}
|
|
|
|
static int eeepc_rfkill_init(struct eeepc_laptop *eeepc)
|
|
{
|
|
int result = 0;
|
|
|
|
mutex_init(&eeepc->hotplug_lock);
|
|
|
|
result = eeepc_new_rfkill(eeepc, &eeepc->wlan_rfkill,
|
|
"eeepc-wlan", RFKILL_TYPE_WLAN,
|
|
CM_ASL_WLAN);
|
|
|
|
if (result && result != -ENODEV)
|
|
goto exit;
|
|
|
|
result = eeepc_new_rfkill(eeepc, &eeepc->bluetooth_rfkill,
|
|
"eeepc-bluetooth", RFKILL_TYPE_BLUETOOTH,
|
|
CM_ASL_BLUETOOTH);
|
|
|
|
if (result && result != -ENODEV)
|
|
goto exit;
|
|
|
|
result = eeepc_new_rfkill(eeepc, &eeepc->wwan3g_rfkill,
|
|
"eeepc-wwan3g", RFKILL_TYPE_WWAN,
|
|
CM_ASL_3G);
|
|
|
|
if (result && result != -ENODEV)
|
|
goto exit;
|
|
|
|
result = eeepc_new_rfkill(eeepc, &eeepc->wimax_rfkill,
|
|
"eeepc-wimax", RFKILL_TYPE_WIMAX,
|
|
CM_ASL_WIMAX);
|
|
|
|
if (result && result != -ENODEV)
|
|
goto exit;
|
|
|
|
if (eeepc->hotplug_disabled)
|
|
return 0;
|
|
|
|
result = eeepc_setup_pci_hotplug(eeepc);
|
|
/*
|
|
* If we get -EBUSY then something else is handling the PCI hotplug -
|
|
* don't fail in this case
|
|
*/
|
|
if (result == -EBUSY)
|
|
result = 0;
|
|
|
|
eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_1);
|
|
eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_2);
|
|
eeepc_register_rfkill_notifier(eeepc, EEEPC_RFKILL_NODE_3);
|
|
|
|
exit:
|
|
if (result && result != -ENODEV)
|
|
eeepc_rfkill_exit(eeepc);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Platform driver - hibernate/resume callbacks
|
|
*/
|
|
static int eeepc_hotk_thaw(struct device *device)
|
|
{
|
|
struct eeepc_laptop *eeepc = dev_get_drvdata(device);
|
|
|
|
if (eeepc->wlan_rfkill) {
|
|
int wlan;
|
|
|
|
/*
|
|
* Work around bios bug - acpi _PTS turns off the wireless led
|
|
* during suspend. Normally it restores it on resume, but
|
|
* we should kick it ourselves in case hibernation is aborted.
|
|
*/
|
|
wlan = get_acpi(eeepc, CM_ASL_WLAN);
|
|
if (wlan >= 0)
|
|
set_acpi(eeepc, CM_ASL_WLAN, wlan);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int eeepc_hotk_restore(struct device *device)
|
|
{
|
|
struct eeepc_laptop *eeepc = dev_get_drvdata(device);
|
|
|
|
/* Refresh both wlan rfkill state and pci hotplug */
|
|
if (eeepc->wlan_rfkill) {
|
|
eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_1);
|
|
eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_2);
|
|
eeepc_rfkill_hotplug_update(eeepc, EEEPC_RFKILL_NODE_3);
|
|
}
|
|
|
|
if (eeepc->bluetooth_rfkill)
|
|
rfkill_set_sw_state(eeepc->bluetooth_rfkill,
|
|
get_acpi(eeepc, CM_ASL_BLUETOOTH) != 1);
|
|
if (eeepc->wwan3g_rfkill)
|
|
rfkill_set_sw_state(eeepc->wwan3g_rfkill,
|
|
get_acpi(eeepc, CM_ASL_3G) != 1);
|
|
if (eeepc->wimax_rfkill)
|
|
rfkill_set_sw_state(eeepc->wimax_rfkill,
|
|
get_acpi(eeepc, CM_ASL_WIMAX) != 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops eeepc_pm_ops = {
|
|
.thaw = eeepc_hotk_thaw,
|
|
.restore = eeepc_hotk_restore,
|
|
};
|
|
|
|
static struct platform_driver platform_driver = {
|
|
.driver = {
|
|
.name = EEEPC_LAPTOP_FILE,
|
|
.pm = &eeepc_pm_ops,
|
|
}
|
|
};
|
|
|
|
/*
|
|
* Hwmon device
|
|
*/
|
|
|
|
#define EEEPC_EC_SC00 0x61
|
|
#define EEEPC_EC_FAN_PWM (EEEPC_EC_SC00 + 2) /* Fan PWM duty cycle (%) */
|
|
#define EEEPC_EC_FAN_HRPM (EEEPC_EC_SC00 + 5) /* High byte, fan speed (RPM) */
|
|
#define EEEPC_EC_FAN_LRPM (EEEPC_EC_SC00 + 6) /* Low byte, fan speed (RPM) */
|
|
|
|
#define EEEPC_EC_SFB0 0xD0
|
|
#define EEEPC_EC_FAN_CTRL (EEEPC_EC_SFB0 + 3) /* Byte containing SF25 */
|
|
|
|
static inline int eeepc_pwm_to_lmsensors(int value)
|
|
{
|
|
return value * 255 / 100;
|
|
}
|
|
|
|
static inline int eeepc_lmsensors_to_pwm(int value)
|
|
{
|
|
value = clamp_val(value, 0, 255);
|
|
return value * 100 / 255;
|
|
}
|
|
|
|
static int eeepc_get_fan_pwm(void)
|
|
{
|
|
u8 value = 0;
|
|
|
|
ec_read(EEEPC_EC_FAN_PWM, &value);
|
|
return eeepc_pwm_to_lmsensors(value);
|
|
}
|
|
|
|
static void eeepc_set_fan_pwm(int value)
|
|
{
|
|
value = eeepc_lmsensors_to_pwm(value);
|
|
ec_write(EEEPC_EC_FAN_PWM, value);
|
|
}
|
|
|
|
static int eeepc_get_fan_rpm(void)
|
|
{
|
|
u8 high = 0;
|
|
u8 low = 0;
|
|
|
|
ec_read(EEEPC_EC_FAN_HRPM, &high);
|
|
ec_read(EEEPC_EC_FAN_LRPM, &low);
|
|
return high << 8 | low;
|
|
}
|
|
|
|
#define EEEPC_EC_FAN_CTRL_BIT 0x02
|
|
#define EEEPC_FAN_CTRL_MANUAL 1
|
|
#define EEEPC_FAN_CTRL_AUTO 2
|
|
|
|
static int eeepc_get_fan_ctrl(void)
|
|
{
|
|
u8 value = 0;
|
|
|
|
ec_read(EEEPC_EC_FAN_CTRL, &value);
|
|
if (value & EEEPC_EC_FAN_CTRL_BIT)
|
|
return EEEPC_FAN_CTRL_MANUAL;
|
|
else
|
|
return EEEPC_FAN_CTRL_AUTO;
|
|
}
|
|
|
|
static void eeepc_set_fan_ctrl(int manual)
|
|
{
|
|
u8 value = 0;
|
|
|
|
ec_read(EEEPC_EC_FAN_CTRL, &value);
|
|
if (manual == EEEPC_FAN_CTRL_MANUAL)
|
|
value |= EEEPC_EC_FAN_CTRL_BIT;
|
|
else
|
|
value &= ~EEEPC_EC_FAN_CTRL_BIT;
|
|
ec_write(EEEPC_EC_FAN_CTRL, value);
|
|
}
|
|
|
|
static ssize_t store_sys_hwmon(void (*set)(int), const char *buf, size_t count)
|
|
{
|
|
int rv, value;
|
|
|
|
rv = parse_arg(buf, &value);
|
|
if (rv < 0)
|
|
return rv;
|
|
set(value);
|
|
return count;
|
|
}
|
|
|
|
static ssize_t show_sys_hwmon(int (*get)(void), char *buf)
|
|
{
|
|
return sprintf(buf, "%d\n", get());
|
|
}
|
|
|
|
#define EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
|
|
static ssize_t _name##_show(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
char *buf) \
|
|
{ \
|
|
return show_sys_hwmon(_get, buf); \
|
|
}
|
|
|
|
#define EEEPC_SENSOR_STORE_FUNC(_name, _set) \
|
|
static ssize_t _name##_store(struct device *dev, \
|
|
struct device_attribute *attr, \
|
|
const char *buf, size_t count) \
|
|
{ \
|
|
return store_sys_hwmon(_set, buf, count); \
|
|
}
|
|
|
|
#define EEEPC_CREATE_SENSOR_ATTR_RW(_name, _get, _set) \
|
|
EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
|
|
EEEPC_SENSOR_STORE_FUNC(_name, _set) \
|
|
static DEVICE_ATTR_RW(_name)
|
|
|
|
#define EEEPC_CREATE_SENSOR_ATTR_RO(_name, _get) \
|
|
EEEPC_SENSOR_SHOW_FUNC(_name, _get) \
|
|
static DEVICE_ATTR_RO(_name)
|
|
|
|
EEEPC_CREATE_SENSOR_ATTR_RO(fan1_input, eeepc_get_fan_rpm);
|
|
EEEPC_CREATE_SENSOR_ATTR_RW(pwm1, eeepc_get_fan_pwm,
|
|
eeepc_set_fan_pwm);
|
|
EEEPC_CREATE_SENSOR_ATTR_RW(pwm1_enable, eeepc_get_fan_ctrl,
|
|
eeepc_set_fan_ctrl);
|
|
|
|
static struct attribute *hwmon_attrs[] = {
|
|
&dev_attr_pwm1.attr,
|
|
&dev_attr_fan1_input.attr,
|
|
&dev_attr_pwm1_enable.attr,
|
|
NULL
|
|
};
|
|
ATTRIBUTE_GROUPS(hwmon);
|
|
|
|
static int eeepc_hwmon_init(struct eeepc_laptop *eeepc)
|
|
{
|
|
struct device *dev = &eeepc->platform_device->dev;
|
|
struct device *hwmon;
|
|
|
|
hwmon = devm_hwmon_device_register_with_groups(dev, "eeepc", NULL,
|
|
hwmon_groups);
|
|
if (IS_ERR(hwmon)) {
|
|
pr_err("Could not register eeepc hwmon device\n");
|
|
return PTR_ERR(hwmon);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Backlight device
|
|
*/
|
|
static int read_brightness(struct backlight_device *bd)
|
|
{
|
|
struct eeepc_laptop *eeepc = bl_get_data(bd);
|
|
|
|
return get_acpi(eeepc, CM_ASL_PANELBRIGHT);
|
|
}
|
|
|
|
static int set_brightness(struct backlight_device *bd, int value)
|
|
{
|
|
struct eeepc_laptop *eeepc = bl_get_data(bd);
|
|
|
|
return set_acpi(eeepc, CM_ASL_PANELBRIGHT, value);
|
|
}
|
|
|
|
static int update_bl_status(struct backlight_device *bd)
|
|
{
|
|
return set_brightness(bd, bd->props.brightness);
|
|
}
|
|
|
|
static const struct backlight_ops eeepcbl_ops = {
|
|
.get_brightness = read_brightness,
|
|
.update_status = update_bl_status,
|
|
};
|
|
|
|
static int eeepc_backlight_notify(struct eeepc_laptop *eeepc)
|
|
{
|
|
struct backlight_device *bd = eeepc->backlight_device;
|
|
int old = bd->props.brightness;
|
|
|
|
backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
|
|
|
|
return old;
|
|
}
|
|
|
|
static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
|
|
{
|
|
struct backlight_properties props;
|
|
struct backlight_device *bd;
|
|
|
|
memset(&props, 0, sizeof(struct backlight_properties));
|
|
props.type = BACKLIGHT_PLATFORM;
|
|
props.max_brightness = 15;
|
|
bd = backlight_device_register(EEEPC_LAPTOP_FILE,
|
|
&eeepc->platform_device->dev, eeepc,
|
|
&eeepcbl_ops, &props);
|
|
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.brightness = read_brightness(bd);
|
|
bd->props.power = FB_BLANK_UNBLANK;
|
|
backlight_update_status(bd);
|
|
return 0;
|
|
}
|
|
|
|
static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
|
|
{
|
|
backlight_device_unregister(eeepc->backlight_device);
|
|
eeepc->backlight_device = NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
* Input device (i.e. hotkeys)
|
|
*/
|
|
static int eeepc_input_init(struct eeepc_laptop *eeepc)
|
|
{
|
|
struct input_dev *input;
|
|
int error;
|
|
|
|
input = input_allocate_device();
|
|
if (!input)
|
|
return -ENOMEM;
|
|
|
|
input->name = "Asus EeePC extra buttons";
|
|
input->phys = EEEPC_LAPTOP_FILE "/input0";
|
|
input->id.bustype = BUS_HOST;
|
|
input->dev.parent = &eeepc->platform_device->dev;
|
|
|
|
error = sparse_keymap_setup(input, eeepc_keymap, NULL);
|
|
if (error) {
|
|
pr_err("Unable to setup input device keymap\n");
|
|
goto err_free_dev;
|
|
}
|
|
|
|
error = input_register_device(input);
|
|
if (error) {
|
|
pr_err("Unable to register input device\n");
|
|
goto err_free_dev;
|
|
}
|
|
|
|
eeepc->inputdev = input;
|
|
return 0;
|
|
|
|
err_free_dev:
|
|
input_free_device(input);
|
|
return error;
|
|
}
|
|
|
|
static void eeepc_input_exit(struct eeepc_laptop *eeepc)
|
|
{
|
|
if (eeepc->inputdev)
|
|
input_unregister_device(eeepc->inputdev);
|
|
eeepc->inputdev = NULL;
|
|
}
|
|
|
|
/*
|
|
* ACPI driver
|
|
*/
|
|
static void eeepc_input_notify(struct eeepc_laptop *eeepc, int event)
|
|
{
|
|
if (!eeepc->inputdev)
|
|
return;
|
|
if (!sparse_keymap_report_event(eeepc->inputdev, event, 1, true))
|
|
pr_info("Unknown key %x pressed\n", event);
|
|
}
|
|
|
|
static void eeepc_acpi_notify(struct acpi_device *device, u32 event)
|
|
{
|
|
struct eeepc_laptop *eeepc = acpi_driver_data(device);
|
|
int old_brightness, new_brightness;
|
|
u16 count;
|
|
|
|
if (event > ACPI_MAX_SYS_NOTIFY)
|
|
return;
|
|
count = eeepc->event_count[event % 128]++;
|
|
acpi_bus_generate_netlink_event(device->pnp.device_class,
|
|
dev_name(&device->dev), event,
|
|
count);
|
|
|
|
/* Brightness events are special */
|
|
if (event < NOTIFY_BRN_MIN || event > NOTIFY_BRN_MAX) {
|
|
eeepc_input_notify(eeepc, event);
|
|
return;
|
|
}
|
|
|
|
/* Ignore them completely if the acpi video driver is used */
|
|
if (!eeepc->backlight_device)
|
|
return;
|
|
|
|
/* Update the backlight device. */
|
|
old_brightness = eeepc_backlight_notify(eeepc);
|
|
|
|
/* Convert event to keypress (obsolescent hack) */
|
|
new_brightness = event - NOTIFY_BRN_MIN;
|
|
|
|
if (new_brightness < old_brightness) {
|
|
event = NOTIFY_BRN_MIN; /* brightness down */
|
|
} else if (new_brightness > old_brightness) {
|
|
event = NOTIFY_BRN_MAX; /* brightness up */
|
|
} else {
|
|
/*
|
|
* no change in brightness - already at min/max,
|
|
* event will be desired value (or else ignored)
|
|
*/
|
|
}
|
|
eeepc_input_notify(eeepc, event);
|
|
}
|
|
|
|
static void eeepc_dmi_check(struct eeepc_laptop *eeepc)
|
|
{
|
|
const char *model;
|
|
|
|
model = dmi_get_system_info(DMI_PRODUCT_NAME);
|
|
if (!model)
|
|
return;
|
|
|
|
/*
|
|
* Blacklist for setting cpufv (cpu speed).
|
|
*
|
|
* EeePC 4G ("701") implements CFVS, but it is not supported
|
|
* by the pre-installed OS, and the original option to change it
|
|
* in the BIOS setup screen was removed in later versions.
|
|
*
|
|
* Judging by the lack of "Super Hybrid Engine" on Asus product pages,
|
|
* this applies to all "701" models (4G/4G Surf/2G Surf).
|
|
*
|
|
* So Asus made a deliberate decision not to support it on this model.
|
|
* We have several reports that using it can cause the system to hang
|
|
*
|
|
* The hang has also been reported on a "702" (Model name "8G"?).
|
|
*
|
|
* We avoid dmi_check_system() / dmi_match(), because they use
|
|
* substring matching. We don't want to affect the "701SD"
|
|
* and "701SDX" models, because they do support S.H.E.
|
|
*/
|
|
if (strcmp(model, "701") == 0 || strcmp(model, "702") == 0) {
|
|
eeepc->cpufv_disabled = true;
|
|
pr_info("model %s does not officially support setting cpu speed\n",
|
|
model);
|
|
pr_info("cpufv disabled to avoid instability\n");
|
|
}
|
|
|
|
/*
|
|
* Blacklist for wlan hotplug
|
|
*
|
|
* Eeepc 1005HA doesn't work like others models and don't need the
|
|
* hotplug code. In fact, current hotplug code seems to unplug another
|
|
* device...
|
|
*/
|
|
if (strcmp(model, "1005HA") == 0 || strcmp(model, "1201N") == 0 ||
|
|
strcmp(model, "1005PE") == 0) {
|
|
eeepc->hotplug_disabled = true;
|
|
pr_info("wlan hotplug disabled\n");
|
|
}
|
|
}
|
|
|
|
static void cmsg_quirk(struct eeepc_laptop *eeepc, int cm, const char *name)
|
|
{
|
|
int dummy;
|
|
|
|
/* Some BIOSes do not report cm although it is available.
|
|
Check if cm_getv[cm] works and, if yes, assume cm should be set. */
|
|
if (!(eeepc->cm_supported & (1 << cm))
|
|
&& !read_acpi_int(eeepc->handle, cm_getv[cm], &dummy)) {
|
|
pr_info("%s (%x) not reported by BIOS, enabling anyway\n",
|
|
name, 1 << cm);
|
|
eeepc->cm_supported |= 1 << cm;
|
|
}
|
|
}
|
|
|
|
static void cmsg_quirks(struct eeepc_laptop *eeepc)
|
|
{
|
|
cmsg_quirk(eeepc, CM_ASL_LID, "LID");
|
|
cmsg_quirk(eeepc, CM_ASL_TYPE, "TYPE");
|
|
cmsg_quirk(eeepc, CM_ASL_PANELPOWER, "PANELPOWER");
|
|
cmsg_quirk(eeepc, CM_ASL_TPD, "TPD");
|
|
}
|
|
|
|
static int eeepc_acpi_init(struct eeepc_laptop *eeepc)
|
|
{
|
|
unsigned int init_flags;
|
|
int result;
|
|
|
|
result = acpi_bus_get_status(eeepc->device);
|
|
if (result)
|
|
return result;
|
|
if (!eeepc->device->status.present) {
|
|
pr_err("Hotkey device not present, aborting\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
init_flags = DISABLE_ASL_WLAN | DISABLE_ASL_DISPLAYSWITCH;
|
|
pr_notice("Hotkey init flags 0x%x\n", init_flags);
|
|
|
|
if (write_acpi_int(eeepc->handle, "INIT", init_flags)) {
|
|
pr_err("Hotkey initialization failed\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* get control methods supported */
|
|
if (read_acpi_int(eeepc->handle, "CMSG", &eeepc->cm_supported)) {
|
|
pr_err("Get control methods supported failed\n");
|
|
return -ENODEV;
|
|
}
|
|
cmsg_quirks(eeepc);
|
|
pr_info("Get control methods supported: 0x%x\n", eeepc->cm_supported);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void eeepc_enable_camera(struct eeepc_laptop *eeepc)
|
|
{
|
|
/*
|
|
* If the following call to set_acpi() fails, it's because there's no
|
|
* camera so we can ignore the error.
|
|
*/
|
|
if (get_acpi(eeepc, CM_ASL_CAMERA) == 0)
|
|
set_acpi(eeepc, CM_ASL_CAMERA, 1);
|
|
}
|
|
|
|
static bool eeepc_device_present;
|
|
|
|
static int eeepc_acpi_add(struct acpi_device *device)
|
|
{
|
|
struct eeepc_laptop *eeepc;
|
|
int result;
|
|
|
|
pr_notice(EEEPC_LAPTOP_NAME "\n");
|
|
eeepc = kzalloc(sizeof(struct eeepc_laptop), GFP_KERNEL);
|
|
if (!eeepc)
|
|
return -ENOMEM;
|
|
eeepc->handle = device->handle;
|
|
strcpy(acpi_device_name(device), EEEPC_ACPI_DEVICE_NAME);
|
|
strcpy(acpi_device_class(device), EEEPC_ACPI_CLASS);
|
|
device->driver_data = eeepc;
|
|
eeepc->device = device;
|
|
|
|
eeepc->hotplug_disabled = hotplug_disabled;
|
|
|
|
eeepc_dmi_check(eeepc);
|
|
|
|
result = eeepc_acpi_init(eeepc);
|
|
if (result)
|
|
goto fail_platform;
|
|
eeepc_enable_camera(eeepc);
|
|
|
|
/*
|
|
* Register the platform device first. It is used as a parent for the
|
|
* sub-devices below.
|
|
*
|
|
* Note that if there are multiple instances of this ACPI device it
|
|
* will bail out, because the platform device is registered with a
|
|
* fixed name. Of course it doesn't make sense to have more than one,
|
|
* and machine-specific scripts find the fixed name convenient. But
|
|
* It's also good for us to exclude multiple instances because both
|
|
* our hwmon and our wlan rfkill subdevice use global ACPI objects
|
|
* (the EC and the wlan PCI slot respectively).
|
|
*/
|
|
result = eeepc_platform_init(eeepc);
|
|
if (result)
|
|
goto fail_platform;
|
|
|
|
if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
|
|
result = eeepc_backlight_init(eeepc);
|
|
if (result)
|
|
goto fail_backlight;
|
|
}
|
|
|
|
result = eeepc_input_init(eeepc);
|
|
if (result)
|
|
goto fail_input;
|
|
|
|
result = eeepc_hwmon_init(eeepc);
|
|
if (result)
|
|
goto fail_hwmon;
|
|
|
|
result = eeepc_led_init(eeepc);
|
|
if (result)
|
|
goto fail_led;
|
|
|
|
result = eeepc_rfkill_init(eeepc);
|
|
if (result)
|
|
goto fail_rfkill;
|
|
|
|
eeepc_device_present = true;
|
|
return 0;
|
|
|
|
fail_rfkill:
|
|
eeepc_led_exit(eeepc);
|
|
fail_led:
|
|
fail_hwmon:
|
|
eeepc_input_exit(eeepc);
|
|
fail_input:
|
|
eeepc_backlight_exit(eeepc);
|
|
fail_backlight:
|
|
eeepc_platform_exit(eeepc);
|
|
fail_platform:
|
|
kfree(eeepc);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int eeepc_acpi_remove(struct acpi_device *device)
|
|
{
|
|
struct eeepc_laptop *eeepc = acpi_driver_data(device);
|
|
|
|
eeepc_backlight_exit(eeepc);
|
|
eeepc_rfkill_exit(eeepc);
|
|
eeepc_input_exit(eeepc);
|
|
eeepc_led_exit(eeepc);
|
|
eeepc_platform_exit(eeepc);
|
|
|
|
kfree(eeepc);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static const struct acpi_device_id eeepc_device_ids[] = {
|
|
{EEEPC_ACPI_HID, 0},
|
|
{"", 0},
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
|
|
|
|
static struct acpi_driver eeepc_acpi_driver = {
|
|
.name = EEEPC_LAPTOP_NAME,
|
|
.class = EEEPC_ACPI_CLASS,
|
|
.owner = THIS_MODULE,
|
|
.ids = eeepc_device_ids,
|
|
.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
|
|
.ops = {
|
|
.add = eeepc_acpi_add,
|
|
.remove = eeepc_acpi_remove,
|
|
.notify = eeepc_acpi_notify,
|
|
},
|
|
};
|
|
|
|
|
|
static int __init eeepc_laptop_init(void)
|
|
{
|
|
int result;
|
|
|
|
result = platform_driver_register(&platform_driver);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
result = acpi_bus_register_driver(&eeepc_acpi_driver);
|
|
if (result < 0)
|
|
goto fail_acpi_driver;
|
|
|
|
if (!eeepc_device_present) {
|
|
result = -ENODEV;
|
|
goto fail_no_device;
|
|
}
|
|
|
|
return 0;
|
|
|
|
fail_no_device:
|
|
acpi_bus_unregister_driver(&eeepc_acpi_driver);
|
|
fail_acpi_driver:
|
|
platform_driver_unregister(&platform_driver);
|
|
return result;
|
|
}
|
|
|
|
static void __exit eeepc_laptop_exit(void)
|
|
{
|
|
acpi_bus_unregister_driver(&eeepc_acpi_driver);
|
|
platform_driver_unregister(&platform_driver);
|
|
}
|
|
|
|
module_init(eeepc_laptop_init);
|
|
module_exit(eeepc_laptop_exit);
|