2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 12:43:55 +08:00
linux-next/drivers/platform/x86/eeepc-laptop.c
Alan Jenkins 6dff29b63a eeepc-laptop: disp attribute should be write-only
Currently, reading from the disp attribute fails with "No such device",
which is misleading. According to CMSG table on acpi4asus project site,
no models have a getter method corresponding to SDSP. Change the file
permission to disallow reads.

If some joker changes the permission to permit reads, then return -EIO
to be consistent with sysfs' behaviour when no show() method is
provided.

Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-12-09 15:54:29 -05:00

1319 lines
30 KiB
C

/*
* eepc-laptop.c - Asus Eee PC extras
*
* Based on asus_acpi.c as patched for the Eee PC by Asus:
* ftp://ftp.asus.com/pub/ASUS/EeePC/701/ASUS_ACPI_071126.rar
* Based on eee.c from eeepc-linux
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/platform_device.h>
#include <linux/backlight.h>
#include <linux/fb.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <acpi/acpi_drivers.h>
#include <acpi/acpi_bus.h>
#include <linux/uaccess.h>
#include <linux/input.h>
#include <linux/rfkill.h>
#include <linux/pci.h>
#include <linux/pci_hotplug.h>
#define EEEPC_LAPTOP_VERSION "0.1"
#define EEEPC_HOTK_NAME "Eee PC Hotkey Driver"
#define EEEPC_HOTK_FILE "eeepc"
#define EEEPC_HOTK_CLASS "hotkey"
#define EEEPC_HOTK_DEVICE_NAME "Hotkey"
#define EEEPC_HOTK_HID "ASUS010"
/*
* Definitions for Asus EeePC
*/
#define NOTIFY_WLAN_ON 0x10
#define NOTIFY_BRN_MIN 0x20
#define NOTIFY_BRN_MAX 0x2f
enum {
DISABLE_ASL_WLAN = 0x0001,
DISABLE_ASL_BLUETOOTH = 0x0002,
DISABLE_ASL_IRDA = 0x0004,
DISABLE_ASL_CAMERA = 0x0008,
DISABLE_ASL_TV = 0x0010,
DISABLE_ASL_GPS = 0x0020,
DISABLE_ASL_DISPLAYSWITCH = 0x0040,
DISABLE_ASL_MODEM = 0x0080,
DISABLE_ASL_CARDREADER = 0x0100,
DISABLE_ASL_3G = 0x0200,
DISABLE_ASL_WIMAX = 0x0400,
DISABLE_ASL_HWCF = 0x0800
};
enum {
CM_ASL_WLAN = 0,
CM_ASL_BLUETOOTH,
CM_ASL_IRDA,
CM_ASL_1394,
CM_ASL_CAMERA,
CM_ASL_TV,
CM_ASL_GPS,
CM_ASL_DVDROM,
CM_ASL_DISPLAYSWITCH,
CM_ASL_PANELBRIGHT,
CM_ASL_BIOSFLASH,
CM_ASL_ACPIFLASH,
CM_ASL_CPUFV,
CM_ASL_CPUTEMPERATURE,
CM_ASL_FANCPU,
CM_ASL_FANCHASSIS,
CM_ASL_USBPORT1,
CM_ASL_USBPORT2,
CM_ASL_USBPORT3,
CM_ASL_MODEM,
CM_ASL_CARDREADER,
CM_ASL_3G,
CM_ASL_WIMAX,
CM_ASL_HWCF,
CM_ASL_LID,
CM_ASL_TYPE,
CM_ASL_PANELPOWER, /*P901*/
CM_ASL_TPD
};
static const char *cm_getv[] = {
"WLDG", "BTHG", NULL, NULL,
"CAMG", NULL, NULL, NULL,
NULL, "PBLG", NULL, NULL,
"CFVG", NULL, NULL, NULL,
"USBG", NULL, NULL, "MODG",
"CRDG", "M3GG", "WIMG", "HWCF",
"LIDG", "TYPE", "PBPG", "TPDG"
};
static const char *cm_setv[] = {
"WLDS", "BTHS", NULL, NULL,
"CAMS", NULL, NULL, NULL,
"SDSP", "PBLS", "HDPS", NULL,
"CFVS", NULL, NULL, NULL,
"USBG", NULL, NULL, "MODS",
"CRDS", "M3GS", "WIMS", NULL,
NULL, NULL, "PBPS", "TPDS"
};
#define EEEPC_EC "\\_SB.PCI0.SBRG.EC0."
#define EEEPC_EC_FAN_PWM EEEPC_EC "SC02" /* Fan PWM duty cycle (%) */
#define EEEPC_EC_SC02 0x63
#define EEEPC_EC_FAN_HRPM EEEPC_EC "SC05" /* High byte, fan speed (RPM) */
#define EEEPC_EC_FAN_LRPM EEEPC_EC "SC06" /* Low byte, fan speed (RPM) */
#define EEEPC_EC_FAN_CTRL EEEPC_EC "SFB3" /* Byte containing SF25 */
#define EEEPC_EC_SFB3 0xD3
/*
* This is the main structure, we can use it to store useful information
* about the hotk device
*/
struct eeepc_hotk {
struct acpi_device *device; /* the device we are in */
acpi_handle handle; /* the handle of the hotk device */
u32 cm_supported; /* the control methods supported
by this BIOS */
uint init_flag; /* Init flags */
u16 event_count[128]; /* count for each event */
struct input_dev *inputdev;
u16 *keycode_map;
struct rfkill *wlan_rfkill;
struct rfkill *bluetooth_rfkill;
struct rfkill *wwan3g_rfkill;
struct rfkill *wimax_rfkill;
struct hotplug_slot *hotplug_slot;
struct mutex hotplug_lock;
};
/* The actual device the driver binds to */
static struct eeepc_hotk *ehotk;
/* Platform device/driver */
static int eeepc_hotk_thaw(struct device *device);
static int eeepc_hotk_restore(struct device *device);
static struct dev_pm_ops eeepc_pm_ops = {
.thaw = eeepc_hotk_thaw,
.restore = eeepc_hotk_restore,
};
static struct platform_driver platform_driver = {
.driver = {
.name = EEEPC_HOTK_FILE,
.owner = THIS_MODULE,
.pm = &eeepc_pm_ops,
}
};
static struct platform_device *platform_device;
struct key_entry {
char type;
u8 code;
u16 keycode;
};
enum { KE_KEY, KE_END };
static struct key_entry eeepc_keymap[] = {
/* Sleep already handled via generic ACPI code */
{KE_KEY, 0x10, KEY_WLAN },
{KE_KEY, 0x11, KEY_WLAN },
{KE_KEY, 0x12, KEY_PROG1 },
{KE_KEY, 0x13, KEY_MUTE },
{KE_KEY, 0x14, KEY_VOLUMEDOWN },
{KE_KEY, 0x15, KEY_VOLUMEUP },
{KE_KEY, 0x1a, KEY_COFFEE },
{KE_KEY, 0x1b, KEY_ZOOM },
{KE_KEY, 0x1c, KEY_PROG2 },
{KE_KEY, 0x1d, KEY_PROG3 },
{KE_KEY, NOTIFY_BRN_MIN, KEY_BRIGHTNESSDOWN },
{KE_KEY, NOTIFY_BRN_MIN + 2, KEY_BRIGHTNESSUP },
{KE_KEY, 0x30, KEY_SWITCHVIDEOMODE },
{KE_KEY, 0x31, KEY_SWITCHVIDEOMODE },
{KE_KEY, 0x32, KEY_SWITCHVIDEOMODE },
{KE_END, 0},
};
/*
* The hotkey driver declaration
*/
static int eeepc_hotk_add(struct acpi_device *device);
static int eeepc_hotk_remove(struct acpi_device *device, int type);
static void eeepc_hotk_notify(struct acpi_device *device, u32 event);
static const struct acpi_device_id eeepc_device_ids[] = {
{EEEPC_HOTK_HID, 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, eeepc_device_ids);
static struct acpi_driver eeepc_hotk_driver = {
.name = EEEPC_HOTK_NAME,
.class = EEEPC_HOTK_CLASS,
.ids = eeepc_device_ids,
.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = eeepc_hotk_add,
.remove = eeepc_hotk_remove,
.notify = eeepc_hotk_notify,
},
};
/* PCI hotplug ops */
static int eeepc_get_adapter_status(struct hotplug_slot *slot, u8 *value);
static struct hotplug_slot_ops eeepc_hotplug_slot_ops = {
.owner = THIS_MODULE,
.get_adapter_status = eeepc_get_adapter_status,
.get_power_status = eeepc_get_adapter_status,
};
/* The backlight device /sys/class/backlight */
static struct backlight_device *eeepc_backlight_device;
/* The hwmon device */
static struct device *eeepc_hwmon_device;
/*
* The backlight class declaration
*/
static int read_brightness(struct backlight_device *bd);
static int update_bl_status(struct backlight_device *bd);
static struct backlight_ops eeepcbl_ops = {
.get_brightness = read_brightness,
.update_status = update_bl_status,
};
MODULE_AUTHOR("Corentin Chary, Eric Cooper");
MODULE_DESCRIPTION(EEEPC_HOTK_NAME);
MODULE_LICENSE("GPL");
/*
* ACPI Helpers
*/
static int write_acpi_int(acpi_handle handle, const char *method, int val,
struct acpi_buffer *output)
{
struct acpi_object_list params;
union acpi_object in_obj;
acpi_status status;
params.count = 1;
params.pointer = &in_obj;
in_obj.type = ACPI_TYPE_INTEGER;
in_obj.integer.value = val;
status = acpi_evaluate_object(handle, (char *)method, &params, output);
return (status == AE_OK ? 0 : -1);
}
static int read_acpi_int(acpi_handle handle, const char *method, int *val)
{
acpi_status status;
unsigned long long result;
status = acpi_evaluate_integer(handle, (char *)method, NULL, &result);
if (ACPI_FAILURE(status)) {
*val = -1;
return -1;
} else {
*val = result;
return 0;
}
}
static int set_acpi(int cm, int value)
{
if (ehotk->cm_supported & (0x1 << cm)) {
const char *method = cm_setv[cm];
if (method == NULL)
return -ENODEV;
if (write_acpi_int(ehotk->handle, method, value, NULL))
pr_warning("Error writing %s\n", method);
}
return 0;
}
static int get_acpi(int cm)
{
int value = -ENODEV;
if ((ehotk->cm_supported & (0x1 << cm))) {
const char *method = cm_getv[cm];
if (method == NULL)
return -ENODEV;
if (read_acpi_int(ehotk->handle, method, &value))
pr_warning("Error reading %s\n", method);
}
return value;
}
/*
* Backlight
*/
static int read_brightness(struct backlight_device *bd)
{
return get_acpi(CM_ASL_PANELBRIGHT);
}
static int set_brightness(struct backlight_device *bd, int value)
{
value = max(0, min(15, value));
return set_acpi(CM_ASL_PANELBRIGHT, value);
}
static int update_bl_status(struct backlight_device *bd)
{
return set_brightness(bd, bd->props.brightness);
}
/*
* Rfkill helpers
*/
static bool eeepc_wlan_rfkill_blocked(void)
{
if (get_acpi(CM_ASL_WLAN) == 1)
return false;
return true;
}
static int eeepc_rfkill_set(void *data, bool blocked)
{
unsigned long asl = (unsigned long)data;
return set_acpi(asl, !blocked);
}
static const struct rfkill_ops eeepc_rfkill_ops = {
.set_block = eeepc_rfkill_set,
};
static void __devinit eeepc_enable_camera(void)
{
/*
* If the following call to set_acpi() fails, it's because there's no
* camera so we can ignore the error.
*/
if (get_acpi(CM_ASL_CAMERA) == 0)
set_acpi(CM_ASL_CAMERA, 1);
}
/*
* Sys helpers
*/
static int parse_arg(const char *buf, unsigned long count, int *val)
{
if (!count)
return 0;
if (sscanf(buf, "%i", val) != 1)
return -EINVAL;
return count;
}
static ssize_t store_sys_acpi(int cm, const char *buf, size_t count)
{
int rv, value;
rv = parse_arg(buf, count, &value);
if (rv > 0)
value = set_acpi(cm, value);
if (value < 0)
return -EIO;
return rv;
}
static ssize_t show_sys_acpi(int cm, char *buf)
{
int value = get_acpi(cm);
if (value < 0)
return -EIO;
return sprintf(buf, "%d\n", value);
}
#define EEEPC_CREATE_DEVICE_ATTR(_name, _mode, _cm) \
static ssize_t show_##_name(struct device *dev, \
struct device_attribute *attr, \
char *buf) \
{ \
return show_sys_acpi(_cm, buf); \
} \
static ssize_t store_##_name(struct device *dev, \
struct device_attribute *attr, \
const char *buf, size_t count) \
{ \
return store_sys_acpi(_cm, buf, count); \
} \
static struct device_attribute dev_attr_##_name = { \
.attr = { \
.name = __stringify(_name), \
.mode = _mode }, \
.show = show_##_name, \
.store = store_##_name, \
}
EEEPC_CREATE_DEVICE_ATTR(camera, 0644, CM_ASL_CAMERA);
EEEPC_CREATE_DEVICE_ATTR(cardr, 0644, CM_ASL_CARDREADER);
EEEPC_CREATE_DEVICE_ATTR(disp, 0200, CM_ASL_DISPLAYSWITCH);
struct eeepc_cpufv {
int num;
int cur;
};
static int get_cpufv(struct eeepc_cpufv *c)
{
c->cur = get_acpi(CM_ASL_CPUFV);
c->num = (c->cur >> 8) & 0xff;
c->cur &= 0xff;
if (c->cur < 0 || c->num <= 0 || c->num > 12)
return -ENODEV;
return 0;
}
static ssize_t show_available_cpufv(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct eeepc_cpufv c;
int i;
ssize_t len = 0;
if (get_cpufv(&c))
return -ENODEV;
for (i = 0; i < c.num; i++)
len += sprintf(buf + len, "%d ", i);
len += sprintf(buf + len, "\n");
return len;
}
static ssize_t show_cpufv(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct eeepc_cpufv c;
if (get_cpufv(&c))
return -ENODEV;
return sprintf(buf, "%#x\n", (c.num << 8) | c.cur);
}
static ssize_t store_cpufv(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct eeepc_cpufv c;
int rv, value;
if (get_cpufv(&c))
return -ENODEV;
rv = parse_arg(buf, count, &value);
if (rv < 0)
return rv;
if (!rv || value < 0 || value >= c.num)
return -EINVAL;
set_acpi(CM_ASL_CPUFV, value);
return rv;
}
static struct device_attribute dev_attr_cpufv = {
.attr = {
.name = "cpufv",
.mode = 0644 },
.show = show_cpufv,
.store = store_cpufv
};
static struct device_attribute dev_attr_available_cpufv = {
.attr = {
.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)
{
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);
}
} 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;
backlight_force_update(bd, BACKLIGHT_UPDATE_HOTKEY);
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_rfkill_hotplug(void)
{
struct pci_dev *dev;
struct pci_bus *bus;
bool blocked = eeepc_wlan_rfkill_blocked();
if (ehotk->wlan_rfkill)
rfkill_set_sw_state(ehotk->wlan_rfkill, blocked);
mutex_lock(&ehotk->hotplug_lock);
if (ehotk->hotplug_slot) {
bus = pci_find_bus(0, 1);
if (!bus) {
pr_warning("Unable to find PCI bus 1?\n");
goto out_unlock;
}
if (!blocked) {
dev = pci_get_slot(bus, 0);
if (dev) {
/* Device already present */
pci_dev_put(dev);
goto out_unlock;
}
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);
}
}
}
out_unlock:
mutex_unlock(&ehotk->hotplug_lock);
}
static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
{
if (event != ACPI_NOTIFY_BUS_CHECK)
return;
eeepc_rfkill_hotplug();
}
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_thaw(struct device *device)
{
if (ehotk->wlan_rfkill) {
bool 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(CM_ASL_WLAN);
set_acpi(CM_ASL_WLAN, wlan);
}
return 0;
}
static int eeepc_hotk_restore(struct device *device)
{
/* Refresh both wlan rfkill state and pci hotplug */
if (ehotk->wlan_rfkill)
eeepc_rfkill_hotplug();
if (ehotk->bluetooth_rfkill)
rfkill_set_sw_state(ehotk->bluetooth_rfkill,
get_acpi(CM_ASL_BLUETOOTH) != 1);
if (ehotk->wwan3g_rfkill)
rfkill_set_sw_state(ehotk->wwan3g_rfkill,
get_acpi(CM_ASL_3G) != 1);
if (ehotk->wimax_rfkill)
rfkill_set_sw_state(ehotk->wimax_rfkill,
get_acpi(CM_ASL_WIMAX) != 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.P0P5");
eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
if (ehotk->wlan_rfkill) {
rfkill_unregister(ehotk->wlan_rfkill);
rfkill_destroy(ehotk->wlan_rfkill);
ehotk->wlan_rfkill = NULL;
}
/*
* Refresh pci hotplug in case the rfkill state was changed after
* eeepc_unregister_rfkill_notifier()
*/
eeepc_rfkill_hotplug();
if (ehotk->hotplug_slot)
pci_hp_deregister(ehotk->hotplug_slot);
if (ehotk->bluetooth_rfkill) {
rfkill_unregister(ehotk->bluetooth_rfkill);
rfkill_destroy(ehotk->bluetooth_rfkill);
ehotk->bluetooth_rfkill = NULL;
}
if (ehotk->wwan3g_rfkill) {
rfkill_unregister(ehotk->wwan3g_rfkill);
rfkill_destroy(ehotk->wwan3g_rfkill);
ehotk->wwan3g_rfkill = NULL;
}
if (ehotk->wimax_rfkill) {
rfkill_unregister(ehotk->wimax_rfkill);
rfkill_destroy(ehotk->wimax_rfkill);
ehotk->wimax_rfkill = NULL;
}
}
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 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;
mutex_init(&ehotk->hotplug_lock);
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_new_rfkill(&ehotk->wimax_rfkill,
"eeepc-wimax", dev,
RFKILL_TYPE_WIMAX, CM_ASL_WIMAX);
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;
eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P5");
eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P6");
eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
/*
* Refresh pci hotplug in case the rfkill state was changed during
* setup.
*/
eeepc_rfkill_hotplug();
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 eeepc_input_init(struct device *dev)
{
const struct key_entry *key;
int result;
ehotk->inputdev = input_allocate_device();
if (!ehotk->inputdev) {
pr_info("Unable to allocate input device\n");
return -ENOMEM;
}
ehotk->inputdev->name = "Asus EeePC extra buttons";
ehotk->inputdev->dev.parent = dev;
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 result;
}
return 0;
}
static int __devinit eeepc_hotk_add(struct acpi_device *device)
{
struct device *dev;
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 fail_platform_driver;
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_input_init(dev);
if (result)
goto fail_input;
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_input_exit();
fail_input:
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:
kfree(ehotk);
return result;
}
static int eeepc_hotk_remove(struct acpi_device *device, int type)
{
if (!device || !acpi_driver_data(device))
return -EINVAL;
eeepc_backlight_exit();
eeepc_rfkill_exit();
eeepc_input_exit();
eeepc_hwmon_exit();
sysfs_remove_group(&platform_device->dev.kobj,
&platform_attribute_group);
platform_device_unregister(platform_device);
platform_driver_unregister(&platform_driver);
kfree(ehotk);
return 0;
}
static int __init eeepc_laptop_init(void)
{
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;
}
return 0;
}
static void __exit eeepc_laptop_exit(void)
{
acpi_bus_unregister_driver(&eeepc_hotk_driver);
}
module_init(eeepc_laptop_init);
module_exit(eeepc_laptop_exit);