mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 22:16:39 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1990 lines
48 KiB
C
1990 lines
48 KiB
C
/*
|
|
* video.c - ACPI Video Driver ($Revision:$)
|
|
*
|
|
* Copyright (C) 2004 Luming Yu <luming.yu@intel.com>
|
|
* Copyright (C) 2004 Bruno Ducrot <ducrot@poupinou.org>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*
|
|
* 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.
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/init.h>
|
|
#include <linux/types.h>
|
|
#include <linux/list.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
#include <asm/uaccess.h>
|
|
|
|
#include <acpi/acpi_bus.h>
|
|
#include <acpi/acpi_drivers.h>
|
|
|
|
#define ACPI_VIDEO_COMPONENT 0x08000000
|
|
#define ACPI_VIDEO_CLASS "video"
|
|
#define ACPI_VIDEO_DRIVER_NAME "ACPI Video Driver"
|
|
#define ACPI_VIDEO_BUS_NAME "Video Bus"
|
|
#define ACPI_VIDEO_DEVICE_NAME "Video Device"
|
|
#define ACPI_VIDEO_NOTIFY_SWITCH 0x80
|
|
#define ACPI_VIDEO_NOTIFY_PROBE 0x81
|
|
#define ACPI_VIDEO_NOTIFY_CYCLE 0x82
|
|
#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83
|
|
#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84
|
|
|
|
#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x82
|
|
#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x83
|
|
#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x84
|
|
#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x85
|
|
#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x86
|
|
|
|
|
|
#define ACPI_VIDEO_HEAD_INVALID (~0u - 1)
|
|
#define ACPI_VIDEO_HEAD_END (~0u)
|
|
|
|
|
|
#define _COMPONENT ACPI_VIDEO_COMPONENT
|
|
ACPI_MODULE_NAME ("acpi_video")
|
|
|
|
MODULE_AUTHOR("Bruno Ducrot");
|
|
MODULE_DESCRIPTION(ACPI_VIDEO_DRIVER_NAME);
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int acpi_video_bus_add (struct acpi_device *device);
|
|
static int acpi_video_bus_remove (struct acpi_device *device, int type);
|
|
static int acpi_video_bus_match (struct acpi_device *device, struct acpi_driver *driver);
|
|
|
|
static struct acpi_driver acpi_video_bus = {
|
|
.name = ACPI_VIDEO_DRIVER_NAME,
|
|
.class = ACPI_VIDEO_CLASS,
|
|
.ops = {
|
|
.add = acpi_video_bus_add,
|
|
.remove = acpi_video_bus_remove,
|
|
.match = acpi_video_bus_match,
|
|
},
|
|
};
|
|
|
|
struct acpi_video_bus_flags {
|
|
u8 multihead:1; /* can switch video heads */
|
|
u8 rom:1; /* can retrieve a video rom */
|
|
u8 post:1; /* can configure the head to */
|
|
u8 reserved:5;
|
|
};
|
|
|
|
struct acpi_video_bus_cap {
|
|
u8 _DOS:1; /*Enable/Disable output switching*/
|
|
u8 _DOD:1; /*Enumerate all devices attached to display adapter*/
|
|
u8 _ROM:1; /*Get ROM Data*/
|
|
u8 _GPD:1; /*Get POST Device*/
|
|
u8 _SPD:1; /*Set POST Device*/
|
|
u8 _VPO:1; /*Video POST Options*/
|
|
u8 reserved:2;
|
|
};
|
|
|
|
struct acpi_video_device_attrib{
|
|
u32 display_index:4; /* A zero-based instance of the Display*/
|
|
u32 display_port_attachment:4; /*This field differenates displays type*/
|
|
u32 display_type:4; /*Describe the specific type in use*/
|
|
u32 vendor_specific:4; /*Chipset Vendor Specifi*/
|
|
u32 bios_can_detect:1; /*BIOS can detect the device*/
|
|
u32 depend_on_vga:1; /*Non-VGA output device whose power is related to
|
|
the VGA device.*/
|
|
u32 pipe_id:3; /*For VGA multiple-head devices.*/
|
|
u32 reserved:10; /*Must be 0*/
|
|
u32 device_id_scheme:1; /*Device ID Scheme*/
|
|
};
|
|
|
|
struct acpi_video_enumerated_device {
|
|
union {
|
|
u32 int_val;
|
|
struct acpi_video_device_attrib attrib;
|
|
} value;
|
|
struct acpi_video_device *bind_info;
|
|
};
|
|
|
|
struct acpi_video_bus {
|
|
acpi_handle handle;
|
|
u8 dos_setting;
|
|
struct acpi_video_enumerated_device *attached_array;
|
|
u8 attached_count;
|
|
struct acpi_video_bus_cap cap;
|
|
struct acpi_video_bus_flags flags;
|
|
struct semaphore sem;
|
|
struct list_head video_device_list;
|
|
struct proc_dir_entry *dir;
|
|
};
|
|
|
|
struct acpi_video_device_flags {
|
|
u8 crt:1;
|
|
u8 lcd:1;
|
|
u8 tvout:1;
|
|
u8 bios:1;
|
|
u8 unknown:1;
|
|
u8 reserved:3;
|
|
};
|
|
|
|
struct acpi_video_device_cap {
|
|
u8 _ADR:1; /*Return the unique ID */
|
|
u8 _BCL:1; /*Query list of brightness control levels supported*/
|
|
u8 _BCM:1; /*Set the brightness level*/
|
|
u8 _DDC:1; /*Return the EDID for this device*/
|
|
u8 _DCS:1; /*Return status of output device*/
|
|
u8 _DGS:1; /*Query graphics state*/
|
|
u8 _DSS:1; /*Device state set*/
|
|
u8 _reserved:1;
|
|
};
|
|
|
|
struct acpi_video_device_brightness {
|
|
int curr;
|
|
int count;
|
|
int *levels;
|
|
};
|
|
|
|
struct acpi_video_device {
|
|
acpi_handle handle;
|
|
unsigned long device_id;
|
|
struct acpi_video_device_flags flags;
|
|
struct acpi_video_device_cap cap;
|
|
struct list_head entry;
|
|
struct acpi_video_bus *video;
|
|
struct acpi_device *dev;
|
|
struct acpi_video_device_brightness *brightness;
|
|
};
|
|
|
|
|
|
/* bus */
|
|
static int acpi_video_bus_info_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_bus_info_fops = {
|
|
.open = acpi_video_bus_info_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int acpi_video_bus_ROM_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_bus_ROM_fops = {
|
|
.open = acpi_video_bus_ROM_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int acpi_video_bus_POST_info_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_bus_POST_info_fops = {
|
|
.open = acpi_video_bus_POST_info_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int acpi_video_bus_POST_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_bus_POST_fops = {
|
|
.open = acpi_video_bus_POST_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
|
|
static int acpi_video_bus_DOS_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_bus_DOS_fops = {
|
|
.open = acpi_video_bus_DOS_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
/* device */
|
|
static int acpi_video_device_info_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_device_info_fops = {
|
|
.open = acpi_video_device_info_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int acpi_video_device_state_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_device_state_fops = {
|
|
.open = acpi_video_device_state_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_device_brightness_fops = {
|
|
.open = acpi_video_device_brightness_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int acpi_video_device_EDID_open_fs(struct inode *inode, struct file *file);
|
|
static struct file_operations acpi_video_device_EDID_fops = {
|
|
.open = acpi_video_device_EDID_open_fs,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static char device_decode[][30] = {
|
|
"motherboard VGA device",
|
|
"PCI VGA device",
|
|
"AGP VGA device",
|
|
"UNKNOWN",
|
|
};
|
|
|
|
static void acpi_video_device_notify ( acpi_handle handle, u32 event, void *data);
|
|
static void acpi_video_device_rebind( struct acpi_video_bus *video);
|
|
static void acpi_video_device_bind( struct acpi_video_bus *video, struct acpi_video_device *device);
|
|
static int acpi_video_device_enumerate(struct acpi_video_bus *video);
|
|
static int acpi_video_switch_output( struct acpi_video_bus *video, int event);
|
|
static int acpi_video_get_next_level( struct acpi_video_device *device, u32 level_current,u32 event);
|
|
static void acpi_video_switch_brightness ( struct acpi_video_device *device, int event);
|
|
|
|
|
|
/* --------------------------------------------------------------------------
|
|
Video Management
|
|
-------------------------------------------------------------------------- */
|
|
|
|
/* device */
|
|
|
|
static int
|
|
acpi_video_device_query (
|
|
struct acpi_video_device *device,
|
|
unsigned long *state)
|
|
{
|
|
int status;
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_query");
|
|
status = acpi_evaluate_integer(device->handle, "_DGS", NULL, state);
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_get_state (
|
|
struct acpi_video_device *device,
|
|
unsigned long *state)
|
|
{
|
|
int status;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_get_state");
|
|
|
|
status = acpi_evaluate_integer(device->handle, "_DCS", NULL, state);
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_set_state (
|
|
struct acpi_video_device *device,
|
|
int state)
|
|
{
|
|
int status;
|
|
union acpi_object arg0 = {ACPI_TYPE_INTEGER};
|
|
struct acpi_object_list args = {1, &arg0};
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_set_state");
|
|
|
|
arg0.integer.value = state;
|
|
status = acpi_evaluate_integer(device->handle, "_DSS", &args, NULL);
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_lcd_query_levels (
|
|
struct acpi_video_device *device,
|
|
union acpi_object **levels)
|
|
{
|
|
int status;
|
|
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
union acpi_object *obj;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_lcd_query_levels");
|
|
|
|
*levels = NULL;
|
|
|
|
status = acpi_evaluate_object(device->handle, "_BCL", NULL, &buffer);
|
|
if (!ACPI_SUCCESS(status))
|
|
return_VALUE(status);
|
|
obj = (union acpi_object *) buffer.pointer;
|
|
if (!obj && (obj->type != ACPI_TYPE_PACKAGE)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _BCL data\n"));
|
|
status = -EFAULT;
|
|
goto err;
|
|
}
|
|
|
|
*levels = obj;
|
|
|
|
return_VALUE(0);
|
|
|
|
err:
|
|
if (buffer.pointer)
|
|
kfree(buffer.pointer);
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_lcd_set_level (
|
|
struct acpi_video_device *device,
|
|
int level)
|
|
{
|
|
int status;
|
|
union acpi_object arg0 = {ACPI_TYPE_INTEGER};
|
|
struct acpi_object_list args = {1, &arg0};
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_lcd_set_level");
|
|
|
|
arg0.integer.value = level;
|
|
status = acpi_evaluate_object(device->handle, "_BCM", &args, NULL);
|
|
|
|
printk(KERN_DEBUG "set_level status: %x\n", status);
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_lcd_get_level_current (
|
|
struct acpi_video_device *device,
|
|
unsigned long *level)
|
|
{
|
|
int status;
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_lcd_get_level_current");
|
|
|
|
status = acpi_evaluate_integer(device->handle, "_BQC", NULL, level);
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_EDID (
|
|
struct acpi_video_device *device,
|
|
union acpi_object **edid,
|
|
ssize_t length)
|
|
{
|
|
int status;
|
|
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
union acpi_object *obj;
|
|
union acpi_object arg0 = {ACPI_TYPE_INTEGER};
|
|
struct acpi_object_list args = {1, &arg0};
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_get_EDID");
|
|
|
|
*edid = NULL;
|
|
|
|
if (!device)
|
|
return_VALUE(-ENODEV);
|
|
if (length == 128)
|
|
arg0.integer.value = 1;
|
|
else if (length == 256)
|
|
arg0.integer.value = 2;
|
|
else
|
|
return_VALUE(-EINVAL);
|
|
|
|
status = acpi_evaluate_object(device->handle, "_DDC", &args, &buffer);
|
|
if (ACPI_FAILURE(status))
|
|
return_VALUE(-ENODEV);
|
|
|
|
obj = (union acpi_object *) buffer.pointer;
|
|
|
|
if (obj && obj->type == ACPI_TYPE_BUFFER)
|
|
*edid = obj;
|
|
else {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DDC data\n"));
|
|
status = -EFAULT;
|
|
kfree(obj);
|
|
}
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
|
|
/* bus */
|
|
|
|
static int
|
|
acpi_video_bus_set_POST (
|
|
struct acpi_video_bus *video,
|
|
unsigned long option)
|
|
{
|
|
int status;
|
|
unsigned long tmp;
|
|
union acpi_object arg0 = {ACPI_TYPE_INTEGER};
|
|
struct acpi_object_list args = {1, &arg0};
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_set_POST");
|
|
|
|
arg0.integer.value = option;
|
|
|
|
status = acpi_evaluate_integer(video->handle, "_SPD", &args, &tmp);
|
|
if (ACPI_SUCCESS(status))
|
|
status = tmp ? (-EINVAL):(AE_OK);
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_get_POST (
|
|
struct acpi_video_bus *video,
|
|
unsigned long *id)
|
|
{
|
|
int status;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_get_POST");
|
|
|
|
status = acpi_evaluate_integer(video->handle, "_GPD", NULL, id);
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_POST_options (
|
|
struct acpi_video_bus *video,
|
|
unsigned long *options)
|
|
{
|
|
int status;
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_POST_options");
|
|
|
|
status = acpi_evaluate_integer(video->handle, "_VPO", NULL, options);
|
|
*options &= 3;
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
/*
|
|
* Arg:
|
|
* video : video bus device pointer
|
|
* bios_flag :
|
|
* 0. The system BIOS should NOT automatically switch(toggle)
|
|
* the active display output.
|
|
* 1. The system BIOS should automatically switch (toggle) the
|
|
* active display output. No swich event.
|
|
* 2. The _DGS value should be locked.
|
|
* 3. The system BIOS should not automatically switch (toggle) the
|
|
* active display output, but instead generate the display switch
|
|
* event notify code.
|
|
* lcd_flag :
|
|
* 0. The system BIOS should automatically control the brightness level
|
|
* of the LCD, when the power changes from AC to DC
|
|
* 1. The system BIOS should NOT automatically control the brightness
|
|
* level of the LCD, when the power changes from AC to DC.
|
|
* Return Value:
|
|
* -1 wrong arg.
|
|
*/
|
|
|
|
static int
|
|
acpi_video_bus_DOS(
|
|
struct acpi_video_bus *video,
|
|
int bios_flag,
|
|
int lcd_flag)
|
|
{
|
|
acpi_integer status = 0;
|
|
union acpi_object arg0 = {ACPI_TYPE_INTEGER};
|
|
struct acpi_object_list args = {1, &arg0};
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_DOS");
|
|
|
|
if (bios_flag < 0 || bios_flag >3 || lcd_flag < 0 || lcd_flag > 1){
|
|
status = -1;
|
|
goto Failed;
|
|
}
|
|
arg0.integer.value = (lcd_flag << 2) | bios_flag;
|
|
video->dos_setting = arg0.integer.value;
|
|
acpi_evaluate_object(video->handle, "_DOS", &args, NULL);
|
|
|
|
Failed:
|
|
return_VALUE(status);
|
|
}
|
|
|
|
/*
|
|
* Arg:
|
|
* device : video output device (LCD, CRT, ..)
|
|
*
|
|
* Return Value:
|
|
* None
|
|
*
|
|
* Find out all required AML method defined under the output
|
|
* device.
|
|
*/
|
|
|
|
static void
|
|
acpi_video_device_find_cap (struct acpi_video_device *device)
|
|
{
|
|
acpi_integer status;
|
|
acpi_handle h_dummy1;
|
|
int i;
|
|
union acpi_object *obj = NULL;
|
|
struct acpi_video_device_brightness *br = NULL;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_find_cap");
|
|
|
|
memset( &device->cap, 0, 4);
|
|
|
|
if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_ADR", &h_dummy1))) {
|
|
device->cap._ADR = 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_BCL", &h_dummy1))) {
|
|
device->cap._BCL= 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_BCM", &h_dummy1))) {
|
|
device->cap._BCM= 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DDC", &h_dummy1))) {
|
|
device->cap._DDC= 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DCS", &h_dummy1))) {
|
|
device->cap._DCS = 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DGS", &h_dummy1))) {
|
|
device->cap._DGS = 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(device->handle, "_DSS", &h_dummy1))) {
|
|
device->cap._DSS = 1;
|
|
}
|
|
|
|
status = acpi_video_device_lcd_query_levels(device, &obj);
|
|
|
|
if (obj && obj->type == ACPI_TYPE_PACKAGE && obj->package.count >= 2) {
|
|
int count = 0;
|
|
union acpi_object *o;
|
|
|
|
br = kmalloc(sizeof &br, GFP_KERNEL);
|
|
if (!br) {
|
|
printk(KERN_ERR "can't allocate memory\n");
|
|
} else {
|
|
memset(br, 0, sizeof &br);
|
|
br->levels = kmalloc(obj->package.count * sizeof &br->levels, GFP_KERNEL);
|
|
if (!br->levels)
|
|
goto out;
|
|
|
|
for (i = 0; i < obj->package.count; i++) {
|
|
o = (union acpi_object *) &obj->package.elements[i];
|
|
if (o->type != ACPI_TYPE_INTEGER) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid data\n"));
|
|
continue;
|
|
}
|
|
br->levels[count] = (u32) o->integer.value;
|
|
count++;
|
|
}
|
|
out:
|
|
if (count < 2) {
|
|
if (br->levels)
|
|
kfree(br->levels);
|
|
kfree(br);
|
|
} else {
|
|
br->count = count;
|
|
device->brightness = br;
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "found %d brightness levels\n", count));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (obj)
|
|
kfree(obj);
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
/*
|
|
* Arg:
|
|
* device : video output device (VGA)
|
|
*
|
|
* Return Value:
|
|
* None
|
|
*
|
|
* Find out all required AML method defined under the video bus device.
|
|
*/
|
|
|
|
static void
|
|
acpi_video_bus_find_cap (struct acpi_video_bus *video)
|
|
{
|
|
acpi_handle h_dummy1;
|
|
|
|
memset(&video->cap ,0, 4);
|
|
if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_DOS", &h_dummy1))) {
|
|
video->cap._DOS = 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_DOD", &h_dummy1))) {
|
|
video->cap._DOD = 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_ROM", &h_dummy1))) {
|
|
video->cap._ROM = 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_GPD", &h_dummy1))) {
|
|
video->cap._GPD = 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_SPD", &h_dummy1))) {
|
|
video->cap._SPD = 1;
|
|
}
|
|
if( ACPI_SUCCESS(acpi_get_handle(video->handle, "_VPO", &h_dummy1))) {
|
|
video->cap._VPO = 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Check whether the video bus device has required AML method to
|
|
* support the desired features
|
|
*/
|
|
|
|
static int
|
|
acpi_video_bus_check (
|
|
struct acpi_video_bus *video)
|
|
{
|
|
acpi_status status = -ENOENT;
|
|
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_check");
|
|
|
|
if (!video)
|
|
return_VALUE(-EINVAL);
|
|
|
|
/* Since there is no HID, CID and so on for VGA driver, we have
|
|
* to check well known required nodes.
|
|
*/
|
|
|
|
/* Does this device able to support video switching ? */
|
|
if(video->cap._DOS){
|
|
video->flags.multihead = 1;
|
|
status = 0;
|
|
}
|
|
|
|
/* Does this device able to retrieve a retrieve a video ROM ? */
|
|
if(video->cap._ROM){
|
|
video->flags.rom = 1;
|
|
status = 0;
|
|
}
|
|
|
|
/* Does this device able to configure which video device to POST ? */
|
|
if(video->cap._GPD && video->cap._SPD && video->cap._VPO){
|
|
video->flags.post = 1;
|
|
status = 0;
|
|
}
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------
|
|
FS Interface (/proc)
|
|
-------------------------------------------------------------------------- */
|
|
|
|
static struct proc_dir_entry *acpi_video_dir;
|
|
|
|
/* video devices */
|
|
|
|
static int
|
|
acpi_video_device_info_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
struct acpi_video_device *dev = (struct acpi_video_device *) seq->private;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_info_seq_show");
|
|
|
|
if (!dev)
|
|
goto end;
|
|
|
|
seq_printf(seq, "device_id: 0x%04x\n", (u32) dev->device_id);
|
|
seq_printf(seq, "type: ");
|
|
if (dev->flags.crt)
|
|
seq_printf(seq, "CRT\n");
|
|
else if (dev->flags.lcd)
|
|
seq_printf(seq, "LCD\n");
|
|
else if (dev->flags.tvout)
|
|
seq_printf(seq, "TVOUT\n");
|
|
else
|
|
seq_printf(seq, "UNKNOWN\n");
|
|
|
|
seq_printf(seq,"known by bios: %s\n",
|
|
dev->flags.bios ? "yes":"no");
|
|
|
|
end:
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_info_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_device_info_seq_show,
|
|
PDE(inode)->data);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_state_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
int status;
|
|
struct acpi_video_device *dev = (struct acpi_video_device *) seq->private;
|
|
unsigned long state;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_state_seq_show");
|
|
|
|
if (!dev)
|
|
goto end;
|
|
|
|
status = acpi_video_device_get_state(dev, &state);
|
|
seq_printf(seq, "state: ");
|
|
if (ACPI_SUCCESS(status))
|
|
seq_printf(seq, "0x%02lx\n", state);
|
|
else
|
|
seq_printf(seq, "<not supported>\n");
|
|
|
|
status = acpi_video_device_query(dev, &state);
|
|
seq_printf(seq, "query: ");
|
|
if (ACPI_SUCCESS(status))
|
|
seq_printf(seq, "0x%02lx\n", state);
|
|
else
|
|
seq_printf(seq, "<not supported>\n");
|
|
|
|
end:
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_state_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_device_state_seq_show,
|
|
PDE(inode)->data);
|
|
}
|
|
|
|
static ssize_t
|
|
acpi_video_device_write_state (
|
|
struct file *file,
|
|
const char __user *buffer,
|
|
size_t count,
|
|
loff_t *data)
|
|
{
|
|
int status;
|
|
struct seq_file *m = (struct seq_file *) file->private_data;
|
|
struct acpi_video_device *dev = (struct acpi_video_device *) m->private;
|
|
char str[12] = {0};
|
|
u32 state = 0;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_write_state");
|
|
|
|
if (!dev || count + 1 > sizeof str)
|
|
return_VALUE(-EINVAL);
|
|
|
|
if (copy_from_user(str, buffer, count))
|
|
return_VALUE(-EFAULT);
|
|
|
|
str[count] = 0;
|
|
state = simple_strtoul(str, NULL, 0);
|
|
state &= ((1ul<<31) | (1ul<<30) | (1ul<<0));
|
|
|
|
status = acpi_video_device_set_state(dev, state);
|
|
|
|
if (status)
|
|
return_VALUE(-EFAULT);
|
|
|
|
return_VALUE(count);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_brightness_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
struct acpi_video_device *dev = (struct acpi_video_device *) seq->private;
|
|
int i;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_brightness_seq_show");
|
|
|
|
if (!dev || !dev->brightness) {
|
|
seq_printf(seq, "<not supported>\n");
|
|
return_VALUE(0);
|
|
}
|
|
|
|
seq_printf(seq, "levels: ");
|
|
for (i = 0; i < dev->brightness->count; i++)
|
|
seq_printf(seq, " %d", dev->brightness->levels[i]);
|
|
seq_printf(seq, "\ncurrent: %d\n", dev->brightness->curr);
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_brightness_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_device_brightness_seq_show,
|
|
PDE(inode)->data);
|
|
}
|
|
|
|
static ssize_t
|
|
acpi_video_device_write_brightness (
|
|
struct file *file,
|
|
const char __user *buffer,
|
|
size_t count,
|
|
loff_t *data)
|
|
{
|
|
struct seq_file *m = (struct seq_file *) file->private_data;
|
|
struct acpi_video_device *dev = (struct acpi_video_device *) m->private;
|
|
char str[4] = {0};
|
|
unsigned int level = 0;
|
|
int i;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_write_brightness");
|
|
|
|
if (!dev || count + 1 > sizeof str)
|
|
return_VALUE(-EINVAL);
|
|
|
|
if (copy_from_user(str, buffer, count))
|
|
return_VALUE(-EFAULT);
|
|
|
|
str[count] = 0;
|
|
level = simple_strtoul(str, NULL, 0);
|
|
|
|
if (level > 100)
|
|
return_VALUE(-EFAULT);
|
|
|
|
/* validate though the list of available levels */
|
|
for (i = 0; i < dev->brightness->count; i++)
|
|
if (level == dev->brightness->levels[i]) {
|
|
if (ACPI_SUCCESS(acpi_video_device_lcd_set_level(dev, level)))
|
|
dev->brightness->curr = level;
|
|
break;
|
|
}
|
|
|
|
return_VALUE(count);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_EDID_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
struct acpi_video_device *dev = (struct acpi_video_device *) seq->private;
|
|
int status;
|
|
int i;
|
|
union acpi_object *edid = NULL;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_EDID_seq_show");
|
|
|
|
if (!dev)
|
|
goto out;
|
|
|
|
status = acpi_video_device_EDID (dev, &edid, 128);
|
|
if (ACPI_FAILURE(status)) {
|
|
status = acpi_video_device_EDID (dev, &edid, 256);
|
|
}
|
|
|
|
if (ACPI_FAILURE(status)) {
|
|
goto out;
|
|
}
|
|
|
|
if (edid && edid->type == ACPI_TYPE_BUFFER) {
|
|
for (i = 0; i < edid->buffer.length; i++)
|
|
seq_putc(seq, edid->buffer.pointer[i]);
|
|
}
|
|
|
|
out:
|
|
if (!edid)
|
|
seq_printf(seq, "<not supported>\n");
|
|
else
|
|
kfree(edid);
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_EDID_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_device_EDID_seq_show,
|
|
PDE(inode)->data);
|
|
}
|
|
|
|
|
|
static int
|
|
acpi_video_device_add_fs (
|
|
struct acpi_device *device)
|
|
{
|
|
struct proc_dir_entry *entry = NULL;
|
|
struct acpi_video_device *vid_dev;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_add_fs");
|
|
|
|
if (!device)
|
|
return_VALUE(-ENODEV);
|
|
|
|
vid_dev = (struct acpi_video_device *) acpi_driver_data(device);
|
|
if (!vid_dev)
|
|
return_VALUE(-ENODEV);
|
|
|
|
if (!acpi_device_dir(device)) {
|
|
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
|
|
vid_dev->video->dir);
|
|
if (!acpi_device_dir(device))
|
|
return_VALUE(-ENODEV);
|
|
acpi_device_dir(device)->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'info' [R] */
|
|
entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Unable to create 'info' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_device_info_fops;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'state' [R/W] */
|
|
entry = create_proc_entry("state", S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Unable to create 'state' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_device_state_fops;
|
|
entry->proc_fops->write = acpi_video_device_write_state;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'brightness' [R/W] */
|
|
entry = create_proc_entry("brightness", S_IFREG|S_IRUGO|S_IWUSR, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Unable to create 'brightness' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_device_brightness_fops;
|
|
entry->proc_fops->write = acpi_video_device_write_brightness;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'EDID' [R] */
|
|
entry = create_proc_entry("EDID", S_IRUGO, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Unable to create 'brightness' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_device_EDID_fops;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_device_remove_fs (
|
|
struct acpi_device *device)
|
|
{
|
|
struct acpi_video_device *vid_dev;
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_remove_fs");
|
|
|
|
vid_dev = (struct acpi_video_device *) acpi_driver_data(device);
|
|
if (!vid_dev || !vid_dev->video || !vid_dev->video->dir)
|
|
return_VALUE(-ENODEV);
|
|
|
|
if (acpi_device_dir(device)) {
|
|
remove_proc_entry("info", acpi_device_dir(device));
|
|
remove_proc_entry("state", acpi_device_dir(device));
|
|
remove_proc_entry("brightness", acpi_device_dir(device));
|
|
remove_proc_entry("EDID", acpi_device_dir(device));
|
|
remove_proc_entry(acpi_device_bid(device),
|
|
vid_dev->video->dir);
|
|
acpi_device_dir(device) = NULL;
|
|
}
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
|
|
/* video bus */
|
|
static int
|
|
acpi_video_bus_info_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_info_seq_show");
|
|
|
|
if (!video)
|
|
goto end;
|
|
|
|
seq_printf(seq, "Switching heads: %s\n",
|
|
video->flags.multihead ? "yes":"no");
|
|
seq_printf(seq, "Video ROM: %s\n",
|
|
video->flags.rom ? "yes":"no");
|
|
seq_printf(seq, "Device to be POSTed on boot: %s\n",
|
|
video->flags.post ? "yes":"no");
|
|
|
|
end:
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_info_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_bus_info_seq_show, PDE(inode)->data);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_ROM_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_ROM_seq_show");
|
|
|
|
if (!video)
|
|
goto end;
|
|
|
|
printk(KERN_INFO PREFIX "Please implement %s\n", __FUNCTION__);
|
|
seq_printf(seq, "<TODO>\n");
|
|
|
|
end:
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_ROM_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_bus_ROM_seq_show, PDE(inode)->data);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_POST_info_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private;
|
|
unsigned long options;
|
|
int status;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_POST_info_seq_show");
|
|
|
|
if (!video)
|
|
goto end;
|
|
|
|
status = acpi_video_bus_POST_options(video, &options);
|
|
if (ACPI_SUCCESS(status)) {
|
|
if (!(options & 1)) {
|
|
printk(KERN_WARNING PREFIX "The motherboard VGA device is not listed as a possible POST device.\n");
|
|
printk(KERN_WARNING PREFIX "This indicate a BIOS bug. Please contact the manufacturer.\n");
|
|
}
|
|
printk("%lx\n", options);
|
|
seq_printf(seq, "can POST: <intgrated video>");
|
|
if (options & 2)
|
|
seq_printf(seq, " <PCI video>");
|
|
if (options & 4)
|
|
seq_printf(seq, " <AGP video>");
|
|
seq_putc(seq, '\n');
|
|
} else
|
|
seq_printf(seq, "<not supported>\n");
|
|
end:
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_POST_info_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_bus_POST_info_seq_show, PDE(inode)->data);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_POST_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private;
|
|
int status;
|
|
unsigned long id;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_POST_seq_show");
|
|
|
|
if (!video)
|
|
goto end;
|
|
|
|
status = acpi_video_bus_get_POST (video, &id);
|
|
if (!ACPI_SUCCESS(status)) {
|
|
seq_printf(seq, "<not supported>\n");
|
|
goto end;
|
|
}
|
|
seq_printf(seq, "device posted is <%s>\n", device_decode[id & 3]);
|
|
|
|
end:
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_DOS_seq_show (
|
|
struct seq_file *seq,
|
|
void *offset)
|
|
{
|
|
struct acpi_video_bus *video = (struct acpi_video_bus *) seq->private;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_DOS_seq_show");
|
|
|
|
seq_printf(seq, "DOS setting: <%d>\n", video->dos_setting );
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_POST_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_bus_POST_seq_show, PDE(inode)->data);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_DOS_open_fs (
|
|
struct inode *inode,
|
|
struct file *file)
|
|
{
|
|
return single_open(file, acpi_video_bus_DOS_seq_show, PDE(inode)->data);
|
|
}
|
|
|
|
static ssize_t
|
|
acpi_video_bus_write_POST (
|
|
struct file *file,
|
|
const char __user *buffer,
|
|
size_t count,
|
|
loff_t *data)
|
|
{
|
|
int status;
|
|
struct seq_file *m = (struct seq_file *) file->private_data;
|
|
struct acpi_video_bus *video = (struct acpi_video_bus *) m->private;
|
|
char str[12] = {0};
|
|
unsigned long opt, options;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_write_POST");
|
|
|
|
|
|
if (!video || count + 1 > sizeof str)
|
|
return_VALUE(-EINVAL);
|
|
|
|
status = acpi_video_bus_POST_options(video, &options);
|
|
if (!ACPI_SUCCESS(status))
|
|
return_VALUE(-EINVAL);
|
|
|
|
if (copy_from_user(str, buffer, count))
|
|
return_VALUE(-EFAULT);
|
|
|
|
str[count] = 0;
|
|
opt = strtoul(str, NULL, 0);
|
|
if (opt > 3)
|
|
return_VALUE(-EFAULT);
|
|
|
|
/* just in case an OEM 'forget' the motherboard... */
|
|
options |= 1;
|
|
|
|
if (options & (1ul << opt)) {
|
|
status = acpi_video_bus_set_POST (video, opt);
|
|
if (!ACPI_SUCCESS(status))
|
|
return_VALUE(-EFAULT);
|
|
|
|
}
|
|
|
|
|
|
return_VALUE(count);
|
|
}
|
|
|
|
static ssize_t
|
|
acpi_video_bus_write_DOS (
|
|
struct file *file,
|
|
const char __user *buffer,
|
|
size_t count,
|
|
loff_t *data)
|
|
{
|
|
int status;
|
|
struct seq_file *m = (struct seq_file *) file->private_data;
|
|
struct acpi_video_bus *video = (struct acpi_video_bus *) m->private;
|
|
char str[12] = {0};
|
|
unsigned long opt;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_write_DOS");
|
|
|
|
|
|
if (!video || count + 1 > sizeof str)
|
|
return_VALUE(-EINVAL);
|
|
|
|
if (copy_from_user(str, buffer, count))
|
|
return_VALUE(-EFAULT);
|
|
|
|
str[count] = 0;
|
|
opt = strtoul(str, NULL, 0);
|
|
if (opt > 7)
|
|
return_VALUE(-EFAULT);
|
|
|
|
status = acpi_video_bus_DOS (video, opt & 0x3, (opt & 0x4)>>2);
|
|
|
|
if (!ACPI_SUCCESS(status))
|
|
return_VALUE(-EFAULT);
|
|
|
|
return_VALUE(count);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_add_fs (
|
|
struct acpi_device *device)
|
|
{
|
|
struct proc_dir_entry *entry = NULL;
|
|
struct acpi_video_bus *video;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_add_fs");
|
|
|
|
video = (struct acpi_video_bus *) acpi_driver_data(device);
|
|
|
|
if (!acpi_device_dir(device)) {
|
|
acpi_device_dir(device) = proc_mkdir(acpi_device_bid(device),
|
|
acpi_video_dir);
|
|
if (!acpi_device_dir(device))
|
|
return_VALUE(-ENODEV);
|
|
video->dir = acpi_device_dir(device);
|
|
acpi_device_dir(device)->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'info' [R] */
|
|
entry = create_proc_entry("info", S_IRUGO, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'info' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_bus_info_fops;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'ROM' [R] */
|
|
entry = create_proc_entry("ROM", S_IRUGO, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'ROM' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_bus_ROM_fops;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'POST_info' [R] */
|
|
entry = create_proc_entry("POST_info", S_IRUGO, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'POST_info' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_bus_POST_info_fops;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'POST' [R/W] */
|
|
entry = create_proc_entry("POST", S_IFREG|S_IRUGO|S_IRUSR, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'POST' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_bus_POST_fops;
|
|
entry->proc_fops->write = acpi_video_bus_write_POST;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
/* 'DOS' [R/W] */
|
|
entry = create_proc_entry("DOS", S_IFREG|S_IRUGO|S_IRUSR, acpi_device_dir(device));
|
|
if (!entry)
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Unable to create 'DOS' fs entry\n"));
|
|
else {
|
|
entry->proc_fops = &acpi_video_bus_DOS_fops;
|
|
entry->proc_fops->write = acpi_video_bus_write_DOS;
|
|
entry->data = acpi_driver_data(device);
|
|
entry->owner = THIS_MODULE;
|
|
}
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_remove_fs (
|
|
struct acpi_device *device)
|
|
{
|
|
struct acpi_video_bus *video;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_remove_fs");
|
|
|
|
video = (struct acpi_video_bus *) acpi_driver_data(device);
|
|
|
|
if (acpi_device_dir(device)) {
|
|
remove_proc_entry("info", acpi_device_dir(device));
|
|
remove_proc_entry("ROM", acpi_device_dir(device));
|
|
remove_proc_entry("POST_info", acpi_device_dir(device));
|
|
remove_proc_entry("POST", acpi_device_dir(device));
|
|
remove_proc_entry("DOS", acpi_device_dir(device));
|
|
remove_proc_entry(acpi_device_bid(device),
|
|
acpi_video_dir);
|
|
acpi_device_dir(device) = NULL;
|
|
}
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------------
|
|
Driver Interface
|
|
-------------------------------------------------------------------------- */
|
|
|
|
/* device interface */
|
|
|
|
static int
|
|
acpi_video_bus_get_one_device (
|
|
struct acpi_device *device,
|
|
struct acpi_video_bus *video)
|
|
{
|
|
unsigned long device_id;
|
|
int status, result;
|
|
struct acpi_video_device *data;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_get_one_device");
|
|
|
|
if (!device || !video)
|
|
return_VALUE(-EINVAL);
|
|
|
|
status = acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
data = kmalloc(sizeof(struct acpi_video_device), GFP_KERNEL);
|
|
if (!data)
|
|
return_VALUE(-ENOMEM);
|
|
|
|
memset(data, 0, sizeof(struct acpi_video_device));
|
|
|
|
data->handle = device->handle;
|
|
strcpy(acpi_device_name(device), ACPI_VIDEO_DEVICE_NAME);
|
|
strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
|
|
acpi_driver_data(device) = data;
|
|
|
|
data->device_id = device_id;
|
|
data->video = video;
|
|
data->dev = device;
|
|
|
|
switch (device_id & 0xffff) {
|
|
case 0x0100:
|
|
data->flags.crt = 1;
|
|
break;
|
|
case 0x0400:
|
|
data->flags.lcd = 1;
|
|
break;
|
|
case 0x0200:
|
|
data->flags.tvout = 1;
|
|
break;
|
|
default:
|
|
data->flags.unknown = 1;
|
|
break;
|
|
}
|
|
|
|
acpi_video_device_bind(video, data);
|
|
acpi_video_device_find_cap(data);
|
|
|
|
status = acpi_install_notify_handler(data->handle,
|
|
ACPI_DEVICE_NOTIFY, acpi_video_device_notify, data);
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Error installing notify handler\n"));
|
|
result = -ENODEV;
|
|
goto end;
|
|
}
|
|
|
|
down(&video->sem);
|
|
list_add_tail(&data->entry, &video->video_device_list);
|
|
up(&video->sem);
|
|
|
|
acpi_video_device_add_fs(device);
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
end:
|
|
return_VALUE(-ENOENT);
|
|
}
|
|
|
|
/*
|
|
* Arg:
|
|
* video : video bus device
|
|
*
|
|
* Return:
|
|
* none
|
|
*
|
|
* Enumerate the video device list of the video bus,
|
|
* bind the ids with the corresponding video devices
|
|
* under the video bus.
|
|
*/
|
|
|
|
static void
|
|
acpi_video_device_rebind( struct acpi_video_bus *video)
|
|
{
|
|
struct list_head * node, * next;
|
|
list_for_each_safe(node, next, &video->video_device_list) {
|
|
struct acpi_video_device * dev = container_of(node, struct acpi_video_device, entry);
|
|
acpi_video_device_bind( video, dev);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Arg:
|
|
* video : video bus device
|
|
* device : video output device under the video
|
|
* bus
|
|
*
|
|
* Return:
|
|
* none
|
|
*
|
|
* Bind the ids with the corresponding video devices
|
|
* under the video bus.
|
|
*/
|
|
|
|
static void
|
|
acpi_video_device_bind( struct acpi_video_bus *video,
|
|
struct acpi_video_device *device)
|
|
{
|
|
int i;
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_bind");
|
|
|
|
#define IDS_VAL(i) video->attached_array[i].value.int_val
|
|
#define IDS_BIND(i) video->attached_array[i].bind_info
|
|
|
|
for (i = 0; IDS_VAL(i) != ACPI_VIDEO_HEAD_INVALID &&
|
|
i < video->attached_count; i++) {
|
|
if (device->device_id == (IDS_VAL(i)& 0xffff)) {
|
|
IDS_BIND(i) = device;
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "device_bind %d\n", i));
|
|
}
|
|
}
|
|
#undef IDS_VAL
|
|
#undef IDS_BIND
|
|
}
|
|
|
|
/*
|
|
* Arg:
|
|
* video : video bus device
|
|
*
|
|
* Return:
|
|
* < 0 : error
|
|
*
|
|
* Call _DOD to enumerate all devices attached to display adapter
|
|
*
|
|
*/
|
|
|
|
static int acpi_video_device_enumerate(struct acpi_video_bus *video)
|
|
{
|
|
int status;
|
|
int count;
|
|
int i;
|
|
struct acpi_video_enumerated_device *active_device_list;
|
|
struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
|
|
union acpi_object *dod = NULL;
|
|
union acpi_object *obj;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_enumerate");
|
|
|
|
status = acpi_evaluate_object(video->handle, "_DOD", NULL, &buffer);
|
|
if (!ACPI_SUCCESS(status)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _DOD\n"));
|
|
return_VALUE(status);
|
|
}
|
|
|
|
dod = (union acpi_object *) buffer.pointer;
|
|
if (!dod || (dod->type != ACPI_TYPE_PACKAGE)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DOD data\n"));
|
|
status = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d video heads in _DOD\n",
|
|
dod->package.count));
|
|
|
|
active_device_list= kmalloc(
|
|
(1+dod->package.count)*sizeof(struct acpi_video_enumerated_device),
|
|
GFP_KERNEL);
|
|
|
|
if (!active_device_list) {
|
|
status = -ENOMEM;
|
|
goto out;
|
|
}
|
|
|
|
count = 0;
|
|
for (i = 0; i < dod->package.count; i++) {
|
|
obj = (union acpi_object *) &dod->package.elements[i];
|
|
|
|
if (obj->type != ACPI_TYPE_INTEGER) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid _DOD data\n"));
|
|
active_device_list[i].value.int_val = ACPI_VIDEO_HEAD_INVALID;
|
|
}
|
|
active_device_list[i].value.int_val = obj->integer.value;
|
|
active_device_list[i].bind_info = NULL;
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "dod element[%d] = %d\n", i, (int) obj->integer.value));
|
|
count++;
|
|
}
|
|
active_device_list[count].value.int_val = ACPI_VIDEO_HEAD_END;
|
|
|
|
if(video->attached_array)
|
|
kfree(video->attached_array);
|
|
|
|
video->attached_array = active_device_list;
|
|
video->attached_count = count;
|
|
out:
|
|
acpi_os_free(buffer.pointer);
|
|
return_VALUE(status);
|
|
}
|
|
|
|
/*
|
|
* Arg:
|
|
* video : video bus device
|
|
* event : Nontify Event
|
|
*
|
|
* Return:
|
|
* < 0 : error
|
|
*
|
|
* 1. Find out the current active output device.
|
|
* 2. Identify the next output device to switch
|
|
* 3. call _DSS to do actual switch.
|
|
*/
|
|
|
|
static int
|
|
acpi_video_switch_output(
|
|
struct acpi_video_bus *video,
|
|
int event)
|
|
{
|
|
struct list_head * node, * next;
|
|
struct acpi_video_device *dev=NULL;
|
|
struct acpi_video_device *dev_next=NULL;
|
|
struct acpi_video_device *dev_prev=NULL;
|
|
unsigned long state;
|
|
int status = 0;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_switch_output");
|
|
|
|
list_for_each_safe(node, next, &video->video_device_list) {
|
|
struct acpi_video_device * dev = container_of(node, struct acpi_video_device, entry);
|
|
status = acpi_video_device_get_state(dev, &state);
|
|
if (state & 0x2){
|
|
dev_next = container_of(node->next, struct acpi_video_device, entry);
|
|
dev_prev = container_of(node->prev, struct acpi_video_device, entry);
|
|
goto out;
|
|
}
|
|
}
|
|
dev_next = container_of(node->next, struct acpi_video_device, entry);
|
|
dev_prev = container_of(node->prev, struct acpi_video_device, entry);
|
|
out:
|
|
switch (event) {
|
|
case ACPI_VIDEO_NOTIFY_CYCLE:
|
|
case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT:
|
|
acpi_video_device_set_state(dev, 0);
|
|
acpi_video_device_set_state(dev_next, 0x80000001);
|
|
break;
|
|
case ACPI_VIDEO_NOTIFY_PREV_OUTPUT:
|
|
acpi_video_device_set_state(dev, 0);
|
|
acpi_video_device_set_state(dev_prev, 0x80000001);
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_get_next_level(
|
|
struct acpi_video_device *device,
|
|
u32 level_current,
|
|
u32 event)
|
|
{
|
|
/*Fix me*/
|
|
return level_current;
|
|
}
|
|
|
|
|
|
static void
|
|
acpi_video_switch_brightness (
|
|
struct acpi_video_device *device,
|
|
int event)
|
|
{
|
|
unsigned long level_current, level_next;
|
|
acpi_video_device_lcd_get_level_current(device, &level_current);
|
|
level_next = acpi_video_get_next_level(device, level_current, event);
|
|
acpi_video_device_lcd_set_level(device, level_next);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_get_devices (
|
|
struct acpi_video_bus *video,
|
|
struct acpi_device *device)
|
|
{
|
|
int status = 0;
|
|
struct list_head *node, *next;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_get_devices");
|
|
|
|
acpi_video_device_enumerate(video);
|
|
|
|
list_for_each_safe(node, next, &device->children) {
|
|
struct acpi_device *dev = list_entry(node, struct acpi_device, node);
|
|
|
|
if (!dev)
|
|
continue;
|
|
|
|
status = acpi_video_bus_get_one_device(dev, video);
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Cant attach device\n"));
|
|
continue;
|
|
}
|
|
|
|
}
|
|
return_VALUE(status);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_put_one_device(
|
|
struct acpi_video_device *device)
|
|
{
|
|
struct acpi_video_bus *video;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_put_one_device");
|
|
|
|
if (!device || !device->video)
|
|
return_VALUE(-ENOENT);
|
|
|
|
video = device->video;
|
|
|
|
down(&video->sem);
|
|
list_del(&device->entry);
|
|
up(&video->sem);
|
|
acpi_video_device_remove_fs(device->dev);
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_put_devices (
|
|
struct acpi_video_bus *video)
|
|
{
|
|
int status;
|
|
struct list_head *node, *next;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_put_devices");
|
|
|
|
list_for_each_safe(node, next, &video->video_device_list) {
|
|
struct acpi_video_device *data = list_entry(node, struct acpi_video_device, entry);
|
|
if (!data)
|
|
continue;
|
|
|
|
status = acpi_video_bus_put_one_device(data);
|
|
if(ACPI_FAILURE(status))
|
|
printk(KERN_WARNING PREFIX "hhuuhhuu bug in acpi video driver.\n");
|
|
|
|
if (data->brightness)
|
|
kfree(data->brightness);
|
|
|
|
kfree(data);
|
|
}
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
/* acpi_video interface */
|
|
|
|
static int
|
|
acpi_video_bus_start_devices(
|
|
struct acpi_video_bus *video)
|
|
{
|
|
return acpi_video_bus_DOS(video, 1, 0);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_stop_devices(
|
|
struct acpi_video_bus *video)
|
|
{
|
|
return acpi_video_bus_DOS(video, 0, 1);
|
|
}
|
|
|
|
static void
|
|
acpi_video_bus_notify (
|
|
acpi_handle handle,
|
|
u32 event,
|
|
void *data)
|
|
{
|
|
struct acpi_video_bus *video = (struct acpi_video_bus *) data;
|
|
struct acpi_device *device = NULL;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_notify");
|
|
printk("video bus notify\n");
|
|
|
|
if (!video)
|
|
return_VOID;
|
|
|
|
if (acpi_bus_get_device(handle, &device))
|
|
return_VOID;
|
|
|
|
switch (event) {
|
|
case ACPI_VIDEO_NOTIFY_SWITCH: /* User request that a switch occur,
|
|
* most likely via hotkey. */
|
|
acpi_bus_generate_event(device, event, 0);
|
|
break;
|
|
|
|
case ACPI_VIDEO_NOTIFY_PROBE: /* User plug or remove a video
|
|
* connector. */
|
|
acpi_video_device_enumerate(video);
|
|
acpi_video_device_rebind(video);
|
|
acpi_video_switch_output(video, event);
|
|
acpi_bus_generate_event(device, event, 0);
|
|
break;
|
|
|
|
case ACPI_VIDEO_NOTIFY_CYCLE: /* Cycle Display output hotkey pressed.*/
|
|
case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT: /* Next Display output hotkey pressed. */
|
|
case ACPI_VIDEO_NOTIFY_PREV_OUTPUT: /* previous Display output hotkey pressed. */
|
|
acpi_video_switch_output(video, event);
|
|
acpi_bus_generate_event(device, event, 0);
|
|
break;
|
|
|
|
default:
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
"Unsupported event [0x%x]\n", event));
|
|
break;
|
|
}
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
static void
|
|
acpi_video_device_notify (
|
|
acpi_handle handle,
|
|
u32 event,
|
|
void *data)
|
|
{
|
|
struct acpi_video_device *video_device = (struct acpi_video_device *) data;
|
|
struct acpi_device *device = NULL;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_device_notify");
|
|
|
|
printk("video device notify\n");
|
|
if (!video_device)
|
|
return_VOID;
|
|
|
|
if (acpi_bus_get_device(handle, &device))
|
|
return_VOID;
|
|
|
|
switch (event) {
|
|
case ACPI_VIDEO_NOTIFY_SWITCH: /* change in status (cycle output device) */
|
|
case ACPI_VIDEO_NOTIFY_PROBE: /* change in status (output device status) */
|
|
acpi_bus_generate_event(device, event, 0);
|
|
break;
|
|
case ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS: /* Cycle brightness */
|
|
case ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS: /* Increase brightness */
|
|
case ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS: /* Decrease brightness */
|
|
case ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS: /* zero brightnesss */
|
|
case ACPI_VIDEO_NOTIFY_DISPLAY_OFF: /* display device off */
|
|
acpi_video_switch_brightness (video_device, event);
|
|
acpi_bus_generate_event(device, event, 0);
|
|
break;
|
|
default:
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
|
|
"Unsupported event [0x%x]\n", event));
|
|
break;
|
|
}
|
|
return_VOID;
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_add (
|
|
struct acpi_device *device)
|
|
{
|
|
int result = 0;
|
|
acpi_status status = 0;
|
|
struct acpi_video_bus *video = NULL;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_add");
|
|
|
|
if (!device)
|
|
return_VALUE(-EINVAL);
|
|
|
|
video = kmalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
|
|
if (!video)
|
|
return_VALUE(-ENOMEM);
|
|
memset(video, 0, sizeof(struct acpi_video_bus));
|
|
|
|
video->handle = device->handle;
|
|
strcpy(acpi_device_name(device), ACPI_VIDEO_BUS_NAME);
|
|
strcpy(acpi_device_class(device), ACPI_VIDEO_CLASS);
|
|
acpi_driver_data(device) = video;
|
|
|
|
acpi_video_bus_find_cap(video);
|
|
result = acpi_video_bus_check(video);
|
|
if (result)
|
|
goto end;
|
|
|
|
result = acpi_video_bus_add_fs(device);
|
|
if (result)
|
|
goto end;
|
|
|
|
init_MUTEX(&video->sem);
|
|
INIT_LIST_HEAD(&video->video_device_list);
|
|
|
|
acpi_video_bus_get_devices(video, device);
|
|
acpi_video_bus_start_devices(video);
|
|
|
|
status = acpi_install_notify_handler(video->handle,
|
|
ACPI_DEVICE_NOTIFY, acpi_video_bus_notify, video);
|
|
if (ACPI_FAILURE(status)) {
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Error installing notify handler\n"));
|
|
result = -ENODEV;
|
|
goto end;
|
|
}
|
|
|
|
printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n",
|
|
ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),
|
|
video->flags.multihead ? "yes":"no",
|
|
video->flags.rom ? "yes":"no",
|
|
video->flags.post ? "yes":"no");
|
|
|
|
end:
|
|
if (result) {
|
|
acpi_video_bus_remove_fs(device);
|
|
kfree(video);
|
|
}
|
|
|
|
return_VALUE(result);
|
|
}
|
|
|
|
static int
|
|
acpi_video_bus_remove (
|
|
struct acpi_device *device,
|
|
int type)
|
|
{
|
|
acpi_status status = 0;
|
|
struct acpi_video_bus *video = NULL;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_remove");
|
|
|
|
if (!device || !acpi_driver_data(device))
|
|
return_VALUE(-EINVAL);
|
|
|
|
video = (struct acpi_video_bus *) acpi_driver_data(device);
|
|
|
|
acpi_video_bus_stop_devices(video);
|
|
|
|
status = acpi_remove_notify_handler(video->handle,
|
|
ACPI_DEVICE_NOTIFY, acpi_video_bus_notify);
|
|
if (ACPI_FAILURE(status))
|
|
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
|
|
"Error removing notify handler\n"));
|
|
|
|
acpi_video_bus_put_devices(video);
|
|
acpi_video_bus_remove_fs(device);
|
|
|
|
if (video->attached_array)
|
|
kfree(video->attached_array);
|
|
kfree(video);
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
|
|
static int
|
|
acpi_video_bus_match (
|
|
struct acpi_device *device,
|
|
struct acpi_driver *driver)
|
|
{
|
|
acpi_handle h_dummy1;
|
|
acpi_handle h_dummy2;
|
|
acpi_handle h_dummy3;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_bus_match");
|
|
|
|
if (!device || !driver)
|
|
return_VALUE(-EINVAL);
|
|
|
|
/* Since there is no HID, CID for ACPI Video drivers, we have
|
|
* to check well known required nodes for each feature we support.
|
|
*/
|
|
|
|
/* Does this device able to support video switching ? */
|
|
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy1)) &&
|
|
ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy2)))
|
|
return_VALUE(0);
|
|
|
|
/* Does this device able to retrieve a video ROM ? */
|
|
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy1)))
|
|
return_VALUE(0);
|
|
|
|
/* Does this device able to configure which video head to be POSTed ? */
|
|
if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy1)) &&
|
|
ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy2)) &&
|
|
ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy3)))
|
|
return_VALUE(0);
|
|
|
|
|
|
return_VALUE(-ENODEV);
|
|
}
|
|
|
|
|
|
static int __init
|
|
acpi_video_init (void)
|
|
{
|
|
int result = 0;
|
|
|
|
ACPI_FUNCTION_TRACE("acpi_video_init");
|
|
|
|
/*
|
|
acpi_dbg_level = 0xFFFFFFFF;
|
|
acpi_dbg_layer = 0x08000000;
|
|
*/
|
|
|
|
acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
|
|
if (!acpi_video_dir)
|
|
return_VALUE(-ENODEV);
|
|
acpi_video_dir->owner = THIS_MODULE;
|
|
|
|
result = acpi_bus_register_driver(&acpi_video_bus);
|
|
if (result < 0) {
|
|
remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
|
|
return_VALUE(-ENODEV);
|
|
}
|
|
|
|
return_VALUE(0);
|
|
}
|
|
|
|
static void __exit
|
|
acpi_video_exit (void)
|
|
{
|
|
ACPI_FUNCTION_TRACE("acpi_video_exit");
|
|
|
|
acpi_bus_unregister_driver(&acpi_video_bus);
|
|
|
|
remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir);
|
|
|
|
return_VOID;
|
|
}
|
|
|
|
module_init(acpi_video_init);
|
|
module_exit(acpi_video_exit);
|