2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-25 13:43:55 +08:00
linux-next/drivers/platform/x86/toshiba_acpi.c

1358 lines
33 KiB
C
Raw Normal View History

/*
* toshiba_acpi.c - Toshiba Laptop ACPI Extras
*
*
* Copyright (C) 2002-2004 John Belmonte
* Copyright (C) 2008 Philip Langdale
* Copyright (C) 2010 Pierre Ducroquet
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*
* The devolpment page for this driver is located at
* http://memebeam.org/toys/ToshibaAcpiDriver.
*
* Credits:
* Jonathan A. Buzzard - Toshiba HCI info, and critical tips on reverse
* engineering the Windows drivers
* Yasushi Nagato - changes for linux kernel 2.4 -> 2.5
* Rob Miller - TV out and hotkeys help
*
*
* TODO
*
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#define TOSHIBA_ACPI_VERSION "0.19"
#define PROC_INTERFACE_VERSION 1
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/backlight.h>
#include <linux/rfkill.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/leds.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 16:04:11 +08:00
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <linux/i8042.h>
#include <asm/uaccess.h>
#include <acpi/acpi_drivers.h>
MODULE_AUTHOR("John Belmonte");
MODULE_DESCRIPTION("Toshiba Laptop ACPI Extras Driver");
MODULE_LICENSE("GPL");
#define TOSHIBA_WMI_EVENT_GUID "59142400-C6A3-40FA-BADB-8A2652834100"
/* Scan code for Fn key on TOS1900 models */
#define TOS1900_FN_SCAN 0x6e
/* Toshiba ACPI method paths */
#define METHOD_VIDEO_OUT "\\_SB_.VALX.DSSX"
/* Toshiba HCI interface definitions
*
* HCI is Toshiba's "Hardware Control Interface" which is supposed to
* be uniform across all their models. Ideally we would just call
* dedicated ACPI methods instead of using this primitive interface.
* However the ACPI methods seem to be incomplete in some areas (for
* example they allow setting, but not reading, the LCD brightness value),
* so this is still useful.
*/
#define HCI_WORDS 6
/* operations */
#define HCI_SET 0xff00
#define HCI_GET 0xfe00
/* return codes */
#define HCI_SUCCESS 0x0000
#define HCI_FAILURE 0x1000
#define HCI_NOT_SUPPORTED 0x8000
#define HCI_EMPTY 0x8c00
/* registers */
#define HCI_FAN 0x0004
#define HCI_TR_BACKLIGHT 0x0005
#define HCI_SYSTEM_EVENT 0x0016
#define HCI_VIDEO_OUT 0x001c
#define HCI_HOTKEY_EVENT 0x001e
#define HCI_LCD_BRIGHTNESS 0x002a
#define HCI_WIRELESS 0x0056
/* field definitions */
#define HCI_HOTKEY_DISABLE 0x0b
#define HCI_HOTKEY_ENABLE 0x09
#define HCI_LCD_BRIGHTNESS_BITS 3
#define HCI_LCD_BRIGHTNESS_SHIFT (16-HCI_LCD_BRIGHTNESS_BITS)
#define HCI_LCD_BRIGHTNESS_LEVELS (1 << HCI_LCD_BRIGHTNESS_BITS)
#define HCI_VIDEO_OUT_LCD 0x1
#define HCI_VIDEO_OUT_CRT 0x2
#define HCI_VIDEO_OUT_TV 0x4
#define HCI_WIRELESS_KILL_SWITCH 0x01
#define HCI_WIRELESS_BT_PRESENT 0x0f
#define HCI_WIRELESS_BT_ATTACH 0x40
#define HCI_WIRELESS_BT_POWER 0x80
struct toshiba_acpi_dev {
struct acpi_device *acpi_dev;
const char *method_hci;
struct rfkill *bt_rfk;
struct input_dev *hotkey_dev;
struct work_struct hotkey_work;
struct backlight_device *backlight_dev;
struct led_classdev led_dev;
int force_fan;
int last_key_event;
int key_event_valid;
unsigned int illumination_supported:1;
unsigned int video_supported:1;
unsigned int fan_supported:1;
unsigned int system_event_supported:1;
unsigned int ntfy_supported:1;
unsigned int info_supported:1;
unsigned int tr_backlight_supported:1;
struct mutex mutex;
};
static struct toshiba_acpi_dev *toshiba_acpi;
static const struct acpi_device_id toshiba_device_ids[] = {
{"TOS6200", 0},
{"TOS6208", 0},
{"TOS1900", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, toshiba_device_ids);
static const struct key_entry toshiba_acpi_keymap[] = {
{ KE_KEY, 0x101, { KEY_MUTE } },
{ KE_KEY, 0x102, { KEY_ZOOMOUT } },
{ KE_KEY, 0x103, { KEY_ZOOMIN } },
{ KE_KEY, 0x12c, { KEY_KBDILLUMTOGGLE } },
{ KE_KEY, 0x139, { KEY_ZOOMRESET } },
{ KE_KEY, 0x13b, { KEY_COFFEE } },
{ KE_KEY, 0x13c, { KEY_BATTERY } },
{ KE_KEY, 0x13d, { KEY_SLEEP } },
{ KE_KEY, 0x13e, { KEY_SUSPEND } },
{ KE_KEY, 0x13f, { KEY_SWITCHVIDEOMODE } },
{ KE_KEY, 0x140, { KEY_BRIGHTNESSDOWN } },
{ KE_KEY, 0x141, { KEY_BRIGHTNESSUP } },
{ KE_KEY, 0x142, { KEY_WLAN } },
{ KE_KEY, 0x143, { KEY_TOUCHPAD_TOGGLE } },
{ KE_KEY, 0x17f, { KEY_FN } },
{ KE_KEY, 0xb05, { KEY_PROG2 } },
{ KE_KEY, 0xb06, { KEY_WWW } },
{ KE_KEY, 0xb07, { KEY_MAIL } },
{ KE_KEY, 0xb30, { KEY_STOP } },
{ KE_KEY, 0xb31, { KEY_PREVIOUSSONG } },
{ KE_KEY, 0xb32, { KEY_NEXTSONG } },
{ KE_KEY, 0xb33, { KEY_PLAYPAUSE } },
{ KE_KEY, 0xb5a, { KEY_MEDIA } },
{ KE_IGNORE, 0x1430, { KEY_RESERVED } },
{ KE_END, 0 },
};
/* utility
*/
static __inline__ void _set_bit(u32 * word, u32 mask, int value)
{
*word = (*word & ~mask) | (mask * value);
}
/* acpi interface wrappers
*/
static int write_acpi_int(const char *methodName, int val)
{
acpi_status status;
status = acpi_execute_simple_method(NULL, (char *)methodName, val);
return (status == AE_OK) ? 0 : -EIO;
}
/* Perform a raw HCI call. Here we don't care about input or output buffer
* format.
*/
static acpi_status hci_raw(struct toshiba_acpi_dev *dev,
const u32 in[HCI_WORDS], u32 out[HCI_WORDS])
{
struct acpi_object_list params;
union acpi_object in_objs[HCI_WORDS];
struct acpi_buffer results;
union acpi_object out_objs[HCI_WORDS + 1];
acpi_status status;
int i;
params.count = HCI_WORDS;
params.pointer = in_objs;
for (i = 0; i < HCI_WORDS; ++i) {
in_objs[i].type = ACPI_TYPE_INTEGER;
in_objs[i].integer.value = in[i];
}
results.length = sizeof(out_objs);
results.pointer = out_objs;
status = acpi_evaluate_object(dev->acpi_dev->handle,
(char *)dev->method_hci, &params,
&results);
if ((status == AE_OK) && (out_objs->package.count <= HCI_WORDS)) {
for (i = 0; i < out_objs->package.count; ++i) {
out[i] = out_objs->package.elements[i].integer.value;
}
}
return status;
}
/* common hci tasks (get or set one or two value)
*
* In addition to the ACPI status, the HCI system returns a result which
* may be useful (such as "not supported").
*/
static acpi_status hci_write1(struct toshiba_acpi_dev *dev, u32 reg,
u32 in1, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_SET, reg, in1, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status = hci_raw(dev, in, out);
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}
static acpi_status hci_read1(struct toshiba_acpi_dev *dev, u32 reg,
u32 *out1, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_GET, reg, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status = hci_raw(dev, in, out);
*out1 = out[2];
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}
static acpi_status hci_write2(struct toshiba_acpi_dev *dev, u32 reg,
u32 in1, u32 in2, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_SET, reg, in1, in2, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status = hci_raw(dev, in, out);
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}
static acpi_status hci_read2(struct toshiba_acpi_dev *dev, u32 reg,
u32 *out1, u32 *out2, u32 *result)
{
u32 in[HCI_WORDS] = { HCI_GET, reg, *out1, *out2, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status = hci_raw(dev, in, out);
*out1 = out[2];
*out2 = out[3];
*result = (status == AE_OK) ? out[0] : HCI_FAILURE;
return status;
}
/* Illumination support */
static int toshiba_illumination_available(struct toshiba_acpi_dev *dev)
{
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;
in[0] = 0xf100;
status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("Illumination device not available\n");
return 0;
}
in[0] = 0xf400;
status = hci_raw(dev, in, out);
return 1;
}
static void toshiba_illumination_set(struct led_classdev *cdev,
enum led_brightness brightness)
{
struct toshiba_acpi_dev *dev = container_of(cdev,
struct toshiba_acpi_dev, led_dev);
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;
/* First request : initialize communication. */
in[0] = 0xf100;
status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("Illumination device not available\n");
return;
}
if (brightness) {
/* Switch the illumination on */
in[0] = 0xf400;
in[1] = 0x14e;
in[2] = 1;
status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("ACPI call for illumination failed\n");
return;
}
} else {
/* Switch the illumination off */
in[0] = 0xf400;
in[1] = 0x14e;
in[2] = 0;
status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("ACPI call for illumination failed.\n");
return;
}
}
/* Last request : close communication. */
in[0] = 0xf200;
in[1] = 0;
in[2] = 0;
hci_raw(dev, in, out);
}
static enum led_brightness toshiba_illumination_get(struct led_classdev *cdev)
{
struct toshiba_acpi_dev *dev = container_of(cdev,
struct toshiba_acpi_dev, led_dev);
u32 in[HCI_WORDS] = { 0, 0, 0, 0, 0, 0 };
u32 out[HCI_WORDS];
acpi_status status;
enum led_brightness result;
/* First request : initialize communication. */
in[0] = 0xf100;
status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("Illumination device not available\n");
return LED_OFF;
}
/* Check the illumination */
in[0] = 0xf300;
in[1] = 0x14e;
status = hci_raw(dev, in, out);
if (ACPI_FAILURE(status)) {
pr_info("ACPI call for illumination failed.\n");
return LED_OFF;
}
result = out[2] ? LED_FULL : LED_OFF;
/* Last request : close communication. */
in[0] = 0xf200;
in[1] = 0;
in[2] = 0;
hci_raw(dev, in, out);
return result;
}
/* Bluetooth rfkill handlers */
static u32 hci_get_bt_present(struct toshiba_acpi_dev *dev, bool *present)
{
u32 hci_result;
u32 value, value2;
value = 0;
value2 = 0;
hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
if (hci_result == HCI_SUCCESS)
*present = (value & HCI_WIRELESS_BT_PRESENT) ? true : false;
return hci_result;
}
static u32 hci_get_radio_state(struct toshiba_acpi_dev *dev, bool *radio_state)
{
u32 hci_result;
u32 value, value2;
value = 0;
value2 = 0x0001;
hci_read2(dev, HCI_WIRELESS, &value, &value2, &hci_result);
*radio_state = value & HCI_WIRELESS_KILL_SWITCH;
return hci_result;
}
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
static int bt_rfkill_set_block(void *data, bool blocked)
{
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
struct toshiba_acpi_dev *dev = data;
u32 result1, result2;
u32 value;
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
int err;
bool radio_state;
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
value = (blocked == false);
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
mutex_lock(&dev->mutex);
if (hci_get_radio_state(dev, &radio_state) != HCI_SUCCESS) {
err = -EIO;
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
goto out;
}
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
if (!radio_state) {
err = 0;
goto out;
}
hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
hci_write2(dev, HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
err = -EIO;
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
else
err = 0;
out:
mutex_unlock(&dev->mutex);
return err;
}
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
{
bool new_rfk_state;
bool value;
u32 hci_result;
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
struct toshiba_acpi_dev *dev = data;
mutex_lock(&dev->mutex);
hci_result = hci_get_radio_state(dev, &value);
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
if (hci_result != HCI_SUCCESS) {
/* Can't do anything useful */
mutex_unlock(&dev->mutex);
return;
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
}
new_rfk_state = value;
mutex_unlock(&dev->mutex);
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
if (rfkill_set_hw_state(rfkill, !new_rfk_state))
bt_rfkill_set_block(data, true);
}
rfkill: rewrite This patch completely rewrites the rfkill core to address the following deficiencies: * all rfkill drivers need to implement polling where necessary rather than having one central implementation * updating the rfkill state cannot be done from arbitrary contexts, forcing drivers to use schedule_work and requiring lots of code * rfkill drivers need to keep track of soft/hard blocked internally -- the core should do this * the rfkill API has many unexpected quirks, for example being asymmetric wrt. alloc/free and register/unregister * rfkill can call back into a driver from within a function the driver called -- this is prone to deadlocks and generally should be avoided * rfkill-input pointlessly is a separate module * drivers need to #ifdef rfkill functions (unless they want to depend on or select RFKILL) -- rfkill should provide inlines that do nothing if it isn't compiled in * the rfkill structure is not opaque -- drivers need to initialise it correctly (lots of sanity checking code required) -- instead force drivers to pass the right variables to rfkill_alloc() * the documentation is hard to read because it always assumes the reader is completely clueless and contains way TOO MANY CAPS * the rfkill code needlessly uses a lot of locks and atomic operations in locked sections * fix LED trigger to actually change the LED when the radio state changes -- this wasn't done before Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> [thinkpad] Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2009-06-02 19:01:37 +08:00
static const struct rfkill_ops toshiba_rfk_ops = {
.set_block = bt_rfkill_set_block,
.poll = bt_rfkill_poll,
};
static int get_tr_backlight_status(struct toshiba_acpi_dev *dev, bool *enabled)
{
u32 hci_result;
u32 status;
hci_read1(dev, HCI_TR_BACKLIGHT, &status, &hci_result);
*enabled = !status;
return hci_result == HCI_SUCCESS ? 0 : -EIO;
}
static int set_tr_backlight_status(struct toshiba_acpi_dev *dev, bool enable)
{
u32 hci_result;
u32 value = !enable;
hci_write1(dev, HCI_TR_BACKLIGHT, value, &hci_result);
return hci_result == HCI_SUCCESS ? 0 : -EIO;
}
static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
static int __get_lcd_brightness(struct toshiba_acpi_dev *dev)
{
u32 hci_result;
u32 value;
int brightness = 0;
if (dev->tr_backlight_supported) {
bool enabled;
int ret = get_tr_backlight_status(dev, &enabled);
if (ret)
return ret;
if (enabled)
return 0;
brightness++;
}
hci_read1(dev, HCI_LCD_BRIGHTNESS, &value, &hci_result);
if (hci_result == HCI_SUCCESS)
return brightness + (value >> HCI_LCD_BRIGHTNESS_SHIFT);
return -EIO;
}
static int get_lcd_brightness(struct backlight_device *bd)
{
struct toshiba_acpi_dev *dev = bl_get_data(bd);
return __get_lcd_brightness(dev);
}
static int lcd_proc_show(struct seq_file *m, void *v)
{
struct toshiba_acpi_dev *dev = m->private;
int value;
int levels;
if (!dev->backlight_dev)
return -ENODEV;
levels = dev->backlight_dev->props.max_brightness + 1;
value = get_lcd_brightness(dev->backlight_dev);
if (value >= 0) {
seq_printf(m, "brightness: %d\n", value);
seq_printf(m, "brightness_levels: %d\n", levels);
return 0;
}
pr_err("Error reading LCD brightness\n");
return -EIO;
}
static int lcd_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, lcd_proc_show, PDE_DATA(inode));
}
static int set_lcd_brightness(struct toshiba_acpi_dev *dev, int value)
{
u32 hci_result;
if (dev->tr_backlight_supported) {
bool enable = !value;
int ret = set_tr_backlight_status(dev, enable);
if (ret)
return ret;
if (value)
value--;
}
value = value << HCI_LCD_BRIGHTNESS_SHIFT;
hci_write1(dev, HCI_LCD_BRIGHTNESS, value, &hci_result);
return hci_result == HCI_SUCCESS ? 0 : -EIO;
}
static int set_lcd_status(struct backlight_device *bd)
{
struct toshiba_acpi_dev *dev = bl_get_data(bd);
return set_lcd_brightness(dev, bd->props.brightness);
}
static ssize_t lcd_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
char cmd[42];
size_t len;
int value;
int ret;
int levels = dev->backlight_dev->props.max_brightness + 1;
len = min(count, sizeof(cmd) - 1);
if (copy_from_user(cmd, buf, len))
return -EFAULT;
cmd[len] = '\0';
if (sscanf(cmd, " brightness : %i", &value) == 1 &&
value >= 0 && value < levels) {
ret = set_lcd_brightness(dev, value);
if (ret == 0)
ret = count;
} else {
ret = -EINVAL;
}
return ret;
}
static const struct file_operations lcd_proc_fops = {
.owner = THIS_MODULE,
.open = lcd_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = lcd_proc_write,
};
static int get_video_status(struct toshiba_acpi_dev *dev, u32 *status)
{
u32 hci_result;
hci_read1(dev, HCI_VIDEO_OUT, status, &hci_result);
return hci_result == HCI_SUCCESS ? 0 : -EIO;
}
static int video_proc_show(struct seq_file *m, void *v)
{
struct toshiba_acpi_dev *dev = m->private;
u32 value;
int ret;
ret = get_video_status(dev, &value);
if (!ret) {
int is_lcd = (value & HCI_VIDEO_OUT_LCD) ? 1 : 0;
int is_crt = (value & HCI_VIDEO_OUT_CRT) ? 1 : 0;
int is_tv = (value & HCI_VIDEO_OUT_TV) ? 1 : 0;
seq_printf(m, "lcd_out: %d\n", is_lcd);
seq_printf(m, "crt_out: %d\n", is_crt);
seq_printf(m, "tv_out: %d\n", is_tv);
}
return ret;
}
static int video_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, video_proc_show, PDE_DATA(inode));
}
static ssize_t video_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
char *cmd, *buffer;
int ret;
int value;
int remain = count;
int lcd_out = -1;
int crt_out = -1;
int tv_out = -1;
u32 video_out;
cmd = kmalloc(count + 1, GFP_KERNEL);
if (!cmd)
return -ENOMEM;
if (copy_from_user(cmd, buf, count)) {
kfree(cmd);
return -EFAULT;
}
cmd[count] = '\0';
buffer = cmd;
/* scan expression. Multiple expressions may be delimited with ;
*
* NOTE: to keep scanning simple, invalid fields are ignored
*/
while (remain) {
if (sscanf(buffer, " lcd_out : %i", &value) == 1)
lcd_out = value & 1;
else if (sscanf(buffer, " crt_out : %i", &value) == 1)
crt_out = value & 1;
else if (sscanf(buffer, " tv_out : %i", &value) == 1)
tv_out = value & 1;
/* advance to one character past the next ; */
do {
++buffer;
--remain;
}
while (remain && *(buffer - 1) != ';');
}
kfree(cmd);
ret = get_video_status(dev, &video_out);
if (!ret) {
unsigned int new_video_out = video_out;
if (lcd_out != -1)
_set_bit(&new_video_out, HCI_VIDEO_OUT_LCD, lcd_out);
if (crt_out != -1)
_set_bit(&new_video_out, HCI_VIDEO_OUT_CRT, crt_out);
if (tv_out != -1)
_set_bit(&new_video_out, HCI_VIDEO_OUT_TV, tv_out);
/* To avoid unnecessary video disruption, only write the new
* video setting if something changed. */
if (new_video_out != video_out)
ret = write_acpi_int(METHOD_VIDEO_OUT, new_video_out);
}
return ret ? ret : count;
}
static const struct file_operations video_proc_fops = {
.owner = THIS_MODULE,
.open = video_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = video_proc_write,
};
static int get_fan_status(struct toshiba_acpi_dev *dev, u32 *status)
{
u32 hci_result;
hci_read1(dev, HCI_FAN, status, &hci_result);
return hci_result == HCI_SUCCESS ? 0 : -EIO;
}
static int fan_proc_show(struct seq_file *m, void *v)
{
struct toshiba_acpi_dev *dev = m->private;
int ret;
u32 value;
ret = get_fan_status(dev, &value);
if (!ret) {
seq_printf(m, "running: %d\n", (value > 0));
seq_printf(m, "force_on: %d\n", dev->force_fan);
}
return ret;
}
static int fan_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, fan_proc_show, PDE_DATA(inode));
}
static ssize_t fan_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
char cmd[42];
size_t len;
int value;
u32 hci_result;
len = min(count, sizeof(cmd) - 1);
if (copy_from_user(cmd, buf, len))
return -EFAULT;
cmd[len] = '\0';
if (sscanf(cmd, " force_on : %i", &value) == 1 &&
value >= 0 && value <= 1) {
hci_write1(dev, HCI_FAN, value, &hci_result);
if (hci_result != HCI_SUCCESS)
return -EIO;
else
dev->force_fan = value;
} else {
return -EINVAL;
}
return count;
}
static const struct file_operations fan_proc_fops = {
.owner = THIS_MODULE,
.open = fan_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = fan_proc_write,
};
static int keys_proc_show(struct seq_file *m, void *v)
{
struct toshiba_acpi_dev *dev = m->private;
u32 hci_result;
u32 value;
if (!dev->key_event_valid && dev->system_event_supported) {
hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
if (hci_result == HCI_SUCCESS) {
dev->key_event_valid = 1;
dev->last_key_event = value;
} else if (hci_result == HCI_EMPTY) {
/* better luck next time */
} else if (hci_result == HCI_NOT_SUPPORTED) {
/* This is a workaround for an unresolved issue on
* some machines where system events sporadically
* become disabled. */
hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
pr_notice("Re-enabled hotkeys\n");
} else {
pr_err("Error reading hotkey status\n");
return -EIO;
}
}
seq_printf(m, "hotkey_ready: %d\n", dev->key_event_valid);
seq_printf(m, "hotkey: 0x%04x\n", dev->last_key_event);
return 0;
}
static int keys_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, keys_proc_show, PDE_DATA(inode));
}
static ssize_t keys_proc_write(struct file *file, const char __user *buf,
size_t count, loff_t *pos)
{
struct toshiba_acpi_dev *dev = PDE_DATA(file_inode(file));
char cmd[42];
size_t len;
int value;
len = min(count, sizeof(cmd) - 1);
if (copy_from_user(cmd, buf, len))
return -EFAULT;
cmd[len] = '\0';
if (sscanf(cmd, " hotkey_ready : %i", &value) == 1 && value == 0) {
dev->key_event_valid = 0;
} else {
return -EINVAL;
}
return count;
}
static const struct file_operations keys_proc_fops = {
.owner = THIS_MODULE,
.open = keys_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
.write = keys_proc_write,
};
static int version_proc_show(struct seq_file *m, void *v)
{
seq_printf(m, "driver: %s\n", TOSHIBA_ACPI_VERSION);
seq_printf(m, "proc_interface: %d\n", PROC_INTERFACE_VERSION);
return 0;
}
static int version_proc_open(struct inode *inode, struct file *file)
{
return single_open(file, version_proc_show, PDE_DATA(inode));
}
static const struct file_operations version_proc_fops = {
.owner = THIS_MODULE,
.open = version_proc_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
/* proc and module init
*/
#define PROC_TOSHIBA "toshiba"
static void create_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
{
if (dev->backlight_dev)
proc_create_data("lcd", S_IRUGO | S_IWUSR, toshiba_proc_dir,
&lcd_proc_fops, dev);
if (dev->video_supported)
proc_create_data("video", S_IRUGO | S_IWUSR, toshiba_proc_dir,
&video_proc_fops, dev);
if (dev->fan_supported)
proc_create_data("fan", S_IRUGO | S_IWUSR, toshiba_proc_dir,
&fan_proc_fops, dev);
if (dev->hotkey_dev)
proc_create_data("keys", S_IRUGO | S_IWUSR, toshiba_proc_dir,
&keys_proc_fops, dev);
proc_create_data("version", S_IRUGO, toshiba_proc_dir,
&version_proc_fops, dev);
}
static void remove_toshiba_proc_entries(struct toshiba_acpi_dev *dev)
{
if (dev->backlight_dev)
remove_proc_entry("lcd", toshiba_proc_dir);
if (dev->video_supported)
remove_proc_entry("video", toshiba_proc_dir);
if (dev->fan_supported)
remove_proc_entry("fan", toshiba_proc_dir);
if (dev->hotkey_dev)
remove_proc_entry("keys", toshiba_proc_dir);
remove_proc_entry("version", toshiba_proc_dir);
}
static const struct backlight_ops toshiba_backlight_data = {
.options = BL_CORE_SUSPENDRESUME,
.get_brightness = get_lcd_brightness,
.update_status = set_lcd_status,
};
static bool toshiba_acpi_i8042_filter(unsigned char data, unsigned char str,
struct serio *port)
{
if (str & 0x20)
return false;
if (unlikely(data == 0xe0))
return false;
if ((data & 0x7f) == TOS1900_FN_SCAN) {
schedule_work(&toshiba_acpi->hotkey_work);
return true;
}
return false;
}
static void toshiba_acpi_hotkey_work(struct work_struct *work)
{
acpi_handle ec_handle = ec_get_handle();
acpi_status status;
if (!ec_handle)
return;
status = acpi_evaluate_object(ec_handle, "NTFY", NULL, NULL);
if (ACPI_FAILURE(status))
pr_err("ACPI NTFY method execution failed\n");
}
/*
* Returns hotkey scancode, or < 0 on failure.
*/
static int toshiba_acpi_query_hotkey(struct toshiba_acpi_dev *dev)
{
struct acpi_buffer buf;
union acpi_object out_obj;
acpi_status status;
buf.pointer = &out_obj;
buf.length = sizeof(out_obj);
status = acpi_evaluate_object(dev->acpi_dev->handle, "INFO",
NULL, &buf);
if (ACPI_FAILURE(status) || out_obj.type != ACPI_TYPE_INTEGER) {
pr_err("ACPI INFO method execution failed\n");
return -EIO;
}
return out_obj.integer.value;
}
static void toshiba_acpi_report_hotkey(struct toshiba_acpi_dev *dev,
int scancode)
{
if (scancode == 0x100)
return;
/* act on key press; ignore key release */
if (scancode & 0x80)
return;
if (!sparse_keymap_report_event(dev->hotkey_dev, scancode, 1, true))
pr_info("Unknown key %x\n", scancode);
}
static int toshiba_acpi_setup_keyboard(struct toshiba_acpi_dev *dev)
{
acpi_status status;
acpi_handle ec_handle;
int error;
u32 hci_result;
dev->hotkey_dev = input_allocate_device();
if (!dev->hotkey_dev) {
pr_info("Unable to register input device\n");
return -ENOMEM;
}
dev->hotkey_dev->name = "Toshiba input device";
dev->hotkey_dev->phys = "toshiba_acpi/input0";
dev->hotkey_dev->id.bustype = BUS_HOST;
error = sparse_keymap_setup(dev->hotkey_dev, toshiba_acpi_keymap, NULL);
if (error)
goto err_free_dev;
/*
* For some machines the SCI responsible for providing hotkey
* notification doesn't fire. We can trigger the notification
* whenever the Fn key is pressed using the NTFY method, if
* supported, so if it's present set up an i8042 key filter
* for this purpose.
*/
status = AE_ERROR;
ec_handle = ec_get_handle();
if (ec_handle && acpi_has_method(ec_handle, "NTFY")) {
INIT_WORK(&dev->hotkey_work, toshiba_acpi_hotkey_work);
error = i8042_install_filter(toshiba_acpi_i8042_filter);
if (error) {
pr_err("Error installing key filter\n");
goto err_free_keymap;
}
dev->ntfy_supported = 1;
}
/*
* Determine hotkey query interface. Prefer using the INFO
* method when it is available.
*/
if (acpi_has_method(dev->acpi_dev->handle, "INFO"))
dev->info_supported = 1;
else {
hci_write1(dev, HCI_SYSTEM_EVENT, 1, &hci_result);
if (hci_result == HCI_SUCCESS)
dev->system_event_supported = 1;
}
if (!dev->info_supported && !dev->system_event_supported) {
pr_warn("No hotkey query interface found\n");
goto err_remove_filter;
}
status = acpi_evaluate_object(dev->acpi_dev->handle, "ENAB", NULL, NULL);
if (ACPI_FAILURE(status)) {
pr_info("Unable to enable hotkeys\n");
error = -ENODEV;
goto err_remove_filter;
}
error = input_register_device(dev->hotkey_dev);
if (error) {
pr_info("Unable to register input device\n");
goto err_remove_filter;
}
hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &hci_result);
return 0;
err_remove_filter:
if (dev->ntfy_supported)
i8042_remove_filter(toshiba_acpi_i8042_filter);
err_free_keymap:
sparse_keymap_free(dev->hotkey_dev);
err_free_dev:
input_free_device(dev->hotkey_dev);
dev->hotkey_dev = NULL;
return error;
}
static int toshiba_acpi_setup_backlight(struct toshiba_acpi_dev *dev)
{
struct backlight_properties props;
int brightness;
int ret;
bool enabled;
/*
* Some machines don't support the backlight methods at all, and
* others support it read-only. Either of these is pretty useless,
* so only register the backlight device if the backlight method
* supports both reads and writes.
*/
brightness = __get_lcd_brightness(dev);
if (brightness < 0)
return 0;
ret = set_lcd_brightness(dev, brightness);
if (ret) {
pr_debug("Backlight method is read-only, disabling backlight support\n");
return 0;
}
/* Determine whether or not BIOS supports transflective backlight */
ret = get_tr_backlight_status(dev, &enabled);
dev->tr_backlight_supported = !ret;
memset(&props, 0, sizeof(props));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = HCI_LCD_BRIGHTNESS_LEVELS - 1;
/* adding an extra level and having 0 change to transflective mode */
if (dev->tr_backlight_supported)
props.max_brightness++;
dev->backlight_dev = backlight_device_register("toshiba",
&dev->acpi_dev->dev,
dev,
&toshiba_backlight_data,
&props);
if (IS_ERR(dev->backlight_dev)) {
ret = PTR_ERR(dev->backlight_dev);
pr_err("Could not register toshiba backlight device\n");
dev->backlight_dev = NULL;
return ret;
}
dev->backlight_dev->props.brightness = brightness;
return 0;
}
static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
{
struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
remove_toshiba_proc_entries(dev);
if (dev->ntfy_supported) {
i8042_remove_filter(toshiba_acpi_i8042_filter);
cancel_work_sync(&dev->hotkey_work);
}
if (dev->hotkey_dev) {
input_unregister_device(dev->hotkey_dev);
sparse_keymap_free(dev->hotkey_dev);
}
if (dev->bt_rfk) {
rfkill_unregister(dev->bt_rfk);
rfkill_destroy(dev->bt_rfk);
}
if (dev->backlight_dev)
backlight_device_unregister(dev->backlight_dev);
if (dev->illumination_supported)
led_classdev_unregister(&dev->led_dev);
if (toshiba_acpi)
toshiba_acpi = NULL;
kfree(dev);
return 0;
}
static const char *find_hci_method(acpi_handle handle)
{
if (acpi_has_method(handle, "GHCI"))
return "GHCI";
if (acpi_has_method(handle, "SPFC"))
return "SPFC";
return NULL;
}
static int toshiba_acpi_add(struct acpi_device *acpi_dev)
{
struct toshiba_acpi_dev *dev;
const char *hci_method;
u32 dummy;
bool bt_present;
int ret = 0;
if (toshiba_acpi)
return -EBUSY;
pr_info("Toshiba Laptop ACPI Extras version %s\n",
TOSHIBA_ACPI_VERSION);
hci_method = find_hci_method(acpi_dev->handle);
if (!hci_method) {
pr_err("HCI interface not found\n");
return -ENODEV;
}
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
dev->acpi_dev = acpi_dev;
dev->method_hci = hci_method;
acpi_dev->driver_data = dev;
if (toshiba_acpi_setup_keyboard(dev))
pr_info("Unable to activate hotkeys\n");
mutex_init(&dev->mutex);
ret = toshiba_acpi_setup_backlight(dev);
if (ret)
goto error;
/* Register rfkill switch for Bluetooth */
if (hci_get_bt_present(dev, &bt_present) == HCI_SUCCESS && bt_present) {
dev->bt_rfk = rfkill_alloc("Toshiba Bluetooth",
&acpi_dev->dev,
RFKILL_TYPE_BLUETOOTH,
&toshiba_rfk_ops,
dev);
if (!dev->bt_rfk) {
pr_err("unable to allocate rfkill device\n");
ret = -ENOMEM;
goto error;
}
ret = rfkill_register(dev->bt_rfk);
if (ret) {
pr_err("unable to register rfkill device\n");
rfkill_destroy(dev->bt_rfk);
goto error;
ACPI toshiba: only register rfkill if bt is enabled Part of the rfkill initialization was done whenever BT was on or not. The following patch checks for BT presence before registering the rfkill to the input layer. Some minor cleanups (> 80 char lines) were also added in the process. On Tue, Oct 28, 2008 at 10:10:37PM +0300, Andrey Borzenkov wrote: [...] > [ 66.633036] toshiba_acpi: Toshiba Laptop ACPI Extras version 0.19 > [ 66.633054] toshiba_acpi: HCI method: \_SB_.VALD.GHCI > [ 66.637764] input: Toshiba RFKill Switch as /devices/virtual/input/input3 [...] > [ 113.920753] ------------[ cut here ]------------ > [ 113.920828] kernel BUG at /home/bor/src/linux-git/net/rfkill/rfkill.c:347! > [ 113.920845] invalid opcode: 0000 [#1] > [ 113.920877] last sysfs file: /sys/devices/pci0000:00/0000:00:04.0/host0/target0:0:0/0:0:0:0/block/sda/size > [ 113.920900] Dumping ftrace buffer: > [ 113.920919] (ftrace buffer empty) > [ 113.920933] Modules linked in: af_packet irnet ppp_generic slhc ircomm_tty ircomm binfmt_misc loop dm_mirror dm_region_hash dm_log dm_round_robin dm_multipath dm_mod alim15x3 ide_core nvram toshiba cryptomgr aead crypto_blkcipher michael_mic crypto_algapi orinoco_cs orinoco hermes_dld hermes pcmcia firmware_class snd_ali5451 snd_ac97_codec ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device smsc_ircc2 snd_pcm_oss snd_pcm rtc_cmos irda snd_timer snd_mixer_oss rtc_core snd crc_ccitt yenta_socket rtc_lib rsrc_nonstatic i2c_ali1535 pcmcia_core pcspkr psmouse soundcore i2c_core evdev sr_mod snd_page_alloc alim1535_wdt cdrom fan sg video output toshiba_acpi rfkill thermal backlight ali_agp processor ac button input_polldev battery agpgart ohci_hcd usbcore reiserfs pata_ali libata sd_mod scsi_mod [last unloaded: scsi_wait_scan] > [ 113.921765] > [ 113.921785] Pid: 3272, comm: ipolldevd Not tainted (2.6.28-rc2-1avb #3) PORTEGE 4000 > [ 113.921801] EIP: 0060:[<dfaa4683>] EFLAGS: 00010246 CPU: 0 > [ 113.921854] EIP is at rfkill_force_state+0x53/0x90 [rfkill] > [ 113.921870] EAX: 00000000 EBX: 00000000 ECX: 00000003 EDX: 00000000 > [ 113.921885] ESI: 00000000 EDI: ddd50300 EBP: d8d7af40 ESP: d8d7af24 > [ 113.921900] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 > [ 113.921918] Process ipolldevd (pid: 3272, ti=d8d7a000 task=d8d93c90 task.ti=d8d7a000) > [ 113.921933] Stack: > [ 113.921945] d8d7af38 00000246 dfb029d8 dfb029c0 dfb029d8 dfb029c0 ddd50300 d8d7af5c > [ 113.922014] dfb018e2 01000246 01000000 ddd50300 ddd50314 ddabb8a0 d8d7af68 dfb381c1 > [ 113.922098] 00000000 d8d7afa4 c012ec0a 00000000 00000002 00000000 c012eba8 ddabb8c0 > [ 113.922240] Call Trace: > [ 113.922240] [<dfb018e2>] ? bt_poll_rfkill+0x5c/0x82 [toshiba_acpi] > [ 113.922240] [<dfb381c1>] ? input_polled_device_work+0x11/0x40 [input_polldev] > [ 113.922240] [<c012ec0a>] ? run_workqueue+0xea/0x1f0 > [ 113.922240] [<c012eba8>] ? run_workqueue+0x88/0x1f0 > [ 113.922240] [<dfb381b0>] ? input_polled_device_work+0x0/0x40 [input_polldev] > [ 113.922240] [<c012f047>] ? worker_thread+0x87/0xf0 > [ 113.922240] [<c0132b00>] ? autoremove_wake_function+0x0/0x50 > [ 113.922240] [<c012efc0>] ? worker_thread+0x0/0xf0 > [ 113.922240] [<c013280f>] ? kthread+0x3f/0x80 > [ 113.922240] [<c01327d0>] ? kthread+0x0/0x80 > [ 113.922240] [<c01040d7>] ? kernel_thread_helper+0x7/0x10 > [ 113.922240] Code: 43 54 89 73 54 39 c6 74 11 89 d9 ba 01 00 00 00 b8 40 68 aa df e8 3e 35 69 e0 89 f8 e8 77 fd 85 e0 31 c0 83 c4 10 5b 5e 5f 5d c3 <0f> 0b eb fe 89 f6 8d bc 27 00 00 00 00 be f4 4d aa df bb 5f 01 > [ 113.922240] EIP: [<dfaa4683>] rfkill_force_state+0x53/0x90 [rfkill] SS:ESP 0068:d8d7af24 > [ 113.924700] ---[ end trace 0e404eb40cadd5f0 ]--- Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Tested-by: Andrey Borzenkov <arvidjaar@mail.ru> Acked-by: Len Brown <len.brown@intel.com> Cc: Richard Purdie <rpurdie@rpsys.net> Acked-by: Philip Langdale <philipl@overt.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-12-16 05:54:19 +08:00
}
}
if (toshiba_illumination_available(dev)) {
dev->led_dev.name = "toshiba::illumination";
dev->led_dev.max_brightness = 1;
dev->led_dev.brightness_set = toshiba_illumination_set;
dev->led_dev.brightness_get = toshiba_illumination_get;
if (!led_classdev_register(&acpi_dev->dev, &dev->led_dev))
dev->illumination_supported = 1;
}
/* Determine whether or not BIOS supports fan and video interfaces */
ret = get_video_status(dev, &dummy);
dev->video_supported = !ret;
ret = get_fan_status(dev, &dummy);
dev->fan_supported = !ret;
create_toshiba_proc_entries(dev);
toshiba_acpi = dev;
return 0;
error:
toshiba_acpi_remove(acpi_dev);
return ret;
}
static void toshiba_acpi_notify(struct acpi_device *acpi_dev, u32 event)
{
struct toshiba_acpi_dev *dev = acpi_driver_data(acpi_dev);
u32 hci_result, value;
int retries = 3;
int scancode;
if (event != 0x80)
return;
if (dev->info_supported) {
scancode = toshiba_acpi_query_hotkey(dev);
if (scancode < 0)
pr_err("Failed to query hotkey event\n");
else if (scancode != 0)
toshiba_acpi_report_hotkey(dev, scancode);
} else if (dev->system_event_supported) {
do {
hci_read1(dev, HCI_SYSTEM_EVENT, &value, &hci_result);
switch (hci_result) {
case HCI_SUCCESS:
toshiba_acpi_report_hotkey(dev, (int)value);
break;
case HCI_NOT_SUPPORTED:
/*
* This is a workaround for an unresolved
* issue on some machines where system events
* sporadically become disabled.
*/
hci_write1(dev, HCI_SYSTEM_EVENT, 1,
&hci_result);
pr_notice("Re-enabled hotkeys\n");
/* fall through */
default:
retries--;
break;
}
} while (retries && hci_result != HCI_EMPTY);
}
}
#ifdef CONFIG_PM_SLEEP
static int toshiba_acpi_suspend(struct device *device)
{
struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
u32 result;
if (dev->hotkey_dev)
hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_DISABLE, &result);
return 0;
}
static int toshiba_acpi_resume(struct device *device)
{
struct toshiba_acpi_dev *dev = acpi_driver_data(to_acpi_device(device));
u32 result;
if (dev->hotkey_dev)
hci_write1(dev, HCI_HOTKEY_EVENT, HCI_HOTKEY_ENABLE, &result);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(toshiba_acpi_pm,
toshiba_acpi_suspend, toshiba_acpi_resume);
static struct acpi_driver toshiba_acpi_driver = {
.name = "Toshiba ACPI driver",
.owner = THIS_MODULE,
.ids = toshiba_device_ids,
.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = toshiba_acpi_add,
.remove = toshiba_acpi_remove,
.notify = toshiba_acpi_notify,
},
.drv.pm = &toshiba_acpi_pm,
};
static int __init toshiba_acpi_init(void)
{
int ret;
/*
* Machines with this WMI guid aren't supported due to bugs in
* their AML. This check relies on wmi initializing before
* toshiba_acpi to guarantee guids have been identified.
*/
if (wmi_has_guid(TOSHIBA_WMI_EVENT_GUID))
return -ENODEV;
toshiba_proc_dir = proc_mkdir(PROC_TOSHIBA, acpi_root_dir);
if (!toshiba_proc_dir) {
pr_err("Unable to create proc dir " PROC_TOSHIBA "\n");
return -ENODEV;
}
ret = acpi_bus_register_driver(&toshiba_acpi_driver);
if (ret) {
pr_err("Failed to register ACPI driver: %d\n", ret);
remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
}
return ret;
}
static void __exit toshiba_acpi_exit(void)
{
acpi_bus_unregister_driver(&toshiba_acpi_driver);
if (toshiba_proc_dir)
remove_proc_entry(PROC_TOSHIBA, acpi_root_dir);
}
module_init(toshiba_acpi_init);
module_exit(toshiba_acpi_exit);