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linux_dsm_epyc7002/drivers/input/serio/i8042-x86ia64io.h
Dmitry Torokhov 68da166491 Input: i8042 - disable active multiplexing by default 
Active multiplexing is a nice feature as it allows several pointing devices
(such as touchpad and external mouse) use their native protocols at the
same time. Unfortunately many manufacturers do not implement the feature
properly even though they advertise it. The problematic implementations are
never fixed, since Windows by default does not use this mode, and move from
one BIOS/model of laptop to another. When active multiplexing is broken
turning it on usually results in touchpad, keyboard, or both unresponsive.

With PS/2 usage on decline (most of PS/2 devices in use nowadays are
internal laptop touchpads), I expect number of users who have laptops with
working MUX implementation, docking stations with external PS/2 ports, and
who are still using external PS/2 mice, to be rather small. Let's flip the
default to be OFF and allow activating it through i8042.nomux=0 kernel
option.  We'll also keep DMI table where we can record known good models.

Acked-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-10-11 11:34:43 -07:00

770 lines
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#ifndef _I8042_X86IA64IO_H
#define _I8042_X86IA64IO_H
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*/
#ifdef CONFIG_X86
#include <asm/x86_init.h>
#endif
/*
* Names.
*/
#define I8042_KBD_PHYS_DESC "isa0060/serio0"
#define I8042_AUX_PHYS_DESC "isa0060/serio1"
#define I8042_MUX_PHYS_DESC "isa0060/serio%d"
/*
* IRQs.
*/
#if defined(__ia64__)
# define I8042_MAP_IRQ(x) isa_irq_to_vector((x))
#else
# define I8042_MAP_IRQ(x) (x)
#endif
#define I8042_KBD_IRQ i8042_kbd_irq
#define I8042_AUX_IRQ i8042_aux_irq
static int i8042_kbd_irq;
static int i8042_aux_irq;
/*
* Register numbers.
*/
#define I8042_COMMAND_REG i8042_command_reg
#define I8042_STATUS_REG i8042_command_reg
#define I8042_DATA_REG i8042_data_reg
static int i8042_command_reg = 0x64;
static int i8042_data_reg = 0x60;
static inline int i8042_read_data(void)
{
return inb(I8042_DATA_REG);
}
static inline int i8042_read_status(void)
{
return inb(I8042_STATUS_REG);
}
static inline void i8042_write_data(int val)
{
outb(val, I8042_DATA_REG);
}
static inline void i8042_write_command(int val)
{
outb(val, I8042_COMMAND_REG);
}
#ifdef CONFIG_X86
#include <linux/dmi.h>
static const struct dmi_system_id __initconst i8042_dmi_noloop_table[] = {
{
/*
* Arima-Rioworks HDAMB -
* AUX LOOP command does not raise AUX IRQ
*/
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "RIOWORKS"),
DMI_MATCH(DMI_BOARD_NAME, "HDAMB"),
DMI_MATCH(DMI_BOARD_VERSION, "Rev E"),
},
},
{
/* ASUS G1S */
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer Inc."),
DMI_MATCH(DMI_BOARD_NAME, "G1S"),
DMI_MATCH(DMI_BOARD_VERSION, "1.0"),
},
},
{
/* ASUS P65UP5 - AUX LOOP command does not raise AUX IRQ */
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
DMI_MATCH(DMI_BOARD_NAME, "P/I-P65UP5"),
DMI_MATCH(DMI_BOARD_VERSION, "REV 2.X"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_PRODUCT_NAME, "X750LN"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
DMI_MATCH(DMI_PRODUCT_NAME , "ProLiant"),
DMI_MATCH(DMI_PRODUCT_VERSION, "8500"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
DMI_MATCH(DMI_PRODUCT_NAME , "ProLiant"),
DMI_MATCH(DMI_PRODUCT_VERSION, "DL760"),
},
},
{
/* OQO Model 01 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
DMI_MATCH(DMI_PRODUCT_VERSION, "00"),
},
},
{
/* ULI EV4873 - AUX LOOP does not work properly */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ULI"),
DMI_MATCH(DMI_PRODUCT_NAME, "EV4873"),
DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
},
},
{
/* Microsoft Virtual Machine */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
DMI_MATCH(DMI_PRODUCT_VERSION, "VS2005R2"),
},
},
{
/* Medion MAM 2070 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
DMI_MATCH(DMI_PRODUCT_NAME, "MAM 2070"),
DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
},
},
{
/* Blue FB5601 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "blue"),
DMI_MATCH(DMI_PRODUCT_NAME, "FB5601"),
DMI_MATCH(DMI_PRODUCT_VERSION, "M606"),
},
},
{
/* Gigabyte M912 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
DMI_MATCH(DMI_PRODUCT_NAME, "M912"),
DMI_MATCH(DMI_PRODUCT_VERSION, "01"),
},
},
{
/* Gigabyte M1022M netbook */
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co.,Ltd."),
DMI_MATCH(DMI_BOARD_NAME, "M1022E"),
DMI_MATCH(DMI_BOARD_VERSION, "1.02"),
},
},
{
/* Gigabyte Spring Peak - defines wrong chassis type */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
DMI_MATCH(DMI_PRODUCT_NAME, "Spring Peak"),
},
},
{
/* Gigabyte T1005 - defines wrong chassis type ("Other") */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
DMI_MATCH(DMI_PRODUCT_NAME, "T1005"),
},
},
{
/* Gigabyte T1005M/P - defines wrong chassis type ("Other") */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
DMI_MATCH(DMI_PRODUCT_NAME, "T1005M/P"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv9700"),
DMI_MATCH(DMI_PRODUCT_VERSION, "Rev 1"),
},
},
{ }
};
/*
* Some laptops do implement active multiplexing mode correctly;
* unfortunately they are in minority.
*/
static const struct dmi_system_id __initconst i8042_dmi_mux_table[] = {
{
/*
* Panasonic CF-18 needs to be in MUX mode since the
* touchscreen is on serio3 and it also has touchpad.
*/
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
},
},
{ }
};
static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
{
/* MSI Wind U-100 */
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "U-100"),
DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
},
},
{
/* LG Electronics X110 */
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "X110"),
DMI_MATCH(DMI_BOARD_VENDOR, "LG Electronics Inc."),
},
},
{
/* Acer Aspire One 150 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
},
},
{
/* Advent 4211 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "DIXONSXP"),
DMI_MATCH(DMI_PRODUCT_NAME, "Advent 4211"),
},
},
{
/* Medion Akoya Mini E1210 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
DMI_MATCH(DMI_PRODUCT_NAME, "E1210"),
},
},
{
/* Medion Akoya E1222 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
DMI_MATCH(DMI_PRODUCT_NAME, "E122X"),
},
},
{
/* Mivvy M310 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "VIOOO"),
DMI_MATCH(DMI_PRODUCT_NAME, "N10"),
},
},
{
/* Dell Vostro 1320 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1320"),
},
},
{
/* Dell Vostro 1520 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1520"),
},
},
{
/* Dell Vostro 1720 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1720"),
},
},
{
/* Lenovo Ideapad U455 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "20046"),
},
},
{ }
};
#ifdef CONFIG_PNP
static const struct dmi_system_id __initconst i8042_dmi_nopnp_table[] = {
{
/* Intel MBO Desktop D845PESV */
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "D845PESV"),
DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
},
},
{
/* MSI Wind U-100 */
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "U-100"),
DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
},
},
{ }
};
static const struct dmi_system_id __initconst i8042_dmi_laptop_table[] = {
{
.matches = {
DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
},
},
{
.matches = {
DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /* Laptop */
},
},
{
.matches = {
DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
},
},
{
.matches = {
DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */
},
},
{ }
};
#endif
static const struct dmi_system_id __initconst i8042_dmi_notimeout_table[] = {
{
/* Dell Vostro V13 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
},
},
{
/* Newer HP Pavilion dv4 models */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
},
},
{
/* Fujitsu U574 laptop */
/* https://bugzilla.kernel.org/show_bug.cgi?id=69731 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U574"),
},
},
{ }
};
/*
* Some Wistron based laptops need us to explicitly enable the 'Dritek
* keyboard extension' to make their extra keys start generating scancodes.
* Originally, this was just confined to older laptops, but a few Acer laptops
* have turned up in 2007 that also need this again.
*/
static const struct dmi_system_id __initconst i8042_dmi_dritek_table[] = {
{
/* Acer Aspire 5100 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
},
},
{
/* Acer Aspire 5610 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
},
},
{
/* Acer Aspire 5630 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
},
},
{
/* Acer Aspire 5650 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
},
},
{
/* Acer Aspire 5680 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
},
},
{
/* Acer Aspire 5720 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"),
},
},
{
/* Acer Aspire 9110 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
},
},
{
/* Acer TravelMate 660 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 660"),
},
},
{
/* Acer TravelMate 2490 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
},
},
{
/* Acer TravelMate 4280 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4280"),
},
},
{ }
};
#endif /* CONFIG_X86 */
#ifdef CONFIG_PNP
#include <linux/pnp.h>
static bool i8042_pnp_kbd_registered;
static unsigned int i8042_pnp_kbd_devices;
static bool i8042_pnp_aux_registered;
static unsigned int i8042_pnp_aux_devices;
static int i8042_pnp_command_reg;
static int i8042_pnp_data_reg;
static int i8042_pnp_kbd_irq;
static int i8042_pnp_aux_irq;
static char i8042_pnp_kbd_name[32];
static char i8042_pnp_aux_name[32];
static void i8042_pnp_id_to_string(struct pnp_id *id, char *dst, int dst_size)
{
strlcpy(dst, "PNP:", dst_size);
while (id) {
strlcat(dst, " ", dst_size);
strlcat(dst, id->id, dst_size);
id = id->next;
}
}
static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
{
if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
i8042_pnp_data_reg = pnp_port_start(dev,0);
if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
i8042_pnp_command_reg = pnp_port_start(dev, 1);
if (pnp_irq_valid(dev,0))
i8042_pnp_kbd_irq = pnp_irq(dev, 0);
strlcpy(i8042_pnp_kbd_name, did->id, sizeof(i8042_pnp_kbd_name));
if (strlen(pnp_dev_name(dev))) {
strlcat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name));
strlcat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name));
}
i8042_pnp_id_to_string(dev->id, i8042_kbd_firmware_id,
sizeof(i8042_kbd_firmware_id));
/* Keyboard ports are always supposed to be wakeup-enabled */
device_set_wakeup_enable(&dev->dev, true);
i8042_pnp_kbd_devices++;
return 0;
}
static int i8042_pnp_aux_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
{
if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
i8042_pnp_data_reg = pnp_port_start(dev,0);
if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
i8042_pnp_command_reg = pnp_port_start(dev, 1);
if (pnp_irq_valid(dev, 0))
i8042_pnp_aux_irq = pnp_irq(dev, 0);
strlcpy(i8042_pnp_aux_name, did->id, sizeof(i8042_pnp_aux_name));
if (strlen(pnp_dev_name(dev))) {
strlcat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name));
strlcat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name));
}
i8042_pnp_id_to_string(dev->id, i8042_aux_firmware_id,
sizeof(i8042_aux_firmware_id));
i8042_pnp_aux_devices++;
return 0;
}
static struct pnp_device_id pnp_kbd_devids[] = {
{ .id = "PNP0300", .driver_data = 0 },
{ .id = "PNP0301", .driver_data = 0 },
{ .id = "PNP0302", .driver_data = 0 },
{ .id = "PNP0303", .driver_data = 0 },
{ .id = "PNP0304", .driver_data = 0 },
{ .id = "PNP0305", .driver_data = 0 },
{ .id = "PNP0306", .driver_data = 0 },
{ .id = "PNP0309", .driver_data = 0 },
{ .id = "PNP030a", .driver_data = 0 },
{ .id = "PNP030b", .driver_data = 0 },
{ .id = "PNP0320", .driver_data = 0 },
{ .id = "PNP0343", .driver_data = 0 },
{ .id = "PNP0344", .driver_data = 0 },
{ .id = "PNP0345", .driver_data = 0 },
{ .id = "CPQA0D7", .driver_data = 0 },
{ .id = "", },
};
MODULE_DEVICE_TABLE(pnp, pnp_kbd_devids);
static struct pnp_driver i8042_pnp_kbd_driver = {
.name = "i8042 kbd",
.id_table = pnp_kbd_devids,
.probe = i8042_pnp_kbd_probe,
};
static struct pnp_device_id pnp_aux_devids[] = {
{ .id = "AUI0200", .driver_data = 0 },
{ .id = "FJC6000", .driver_data = 0 },
{ .id = "FJC6001", .driver_data = 0 },
{ .id = "PNP0f03", .driver_data = 0 },
{ .id = "PNP0f0b", .driver_data = 0 },
{ .id = "PNP0f0e", .driver_data = 0 },
{ .id = "PNP0f12", .driver_data = 0 },
{ .id = "PNP0f13", .driver_data = 0 },
{ .id = "PNP0f19", .driver_data = 0 },
{ .id = "PNP0f1c", .driver_data = 0 },
{ .id = "SYN0801", .driver_data = 0 },
{ .id = "", },
};
MODULE_DEVICE_TABLE(pnp, pnp_aux_devids);
static struct pnp_driver i8042_pnp_aux_driver = {
.name = "i8042 aux",
.id_table = pnp_aux_devids,
.probe = i8042_pnp_aux_probe,
};
static void i8042_pnp_exit(void)
{
if (i8042_pnp_kbd_registered) {
i8042_pnp_kbd_registered = false;
pnp_unregister_driver(&i8042_pnp_kbd_driver);
}
if (i8042_pnp_aux_registered) {
i8042_pnp_aux_registered = false;
pnp_unregister_driver(&i8042_pnp_aux_driver);
}
}
static int __init i8042_pnp_init(void)
{
char kbd_irq_str[4] = { 0 }, aux_irq_str[4] = { 0 };
bool pnp_data_busted = false;
int err;
#ifdef CONFIG_X86
if (dmi_check_system(i8042_dmi_nopnp_table))
i8042_nopnp = true;
#endif
if (i8042_nopnp) {
pr_info("PNP detection disabled\n");
return 0;
}
err = pnp_register_driver(&i8042_pnp_kbd_driver);
if (!err)
i8042_pnp_kbd_registered = true;
err = pnp_register_driver(&i8042_pnp_aux_driver);
if (!err)
i8042_pnp_aux_registered = true;
if (!i8042_pnp_kbd_devices && !i8042_pnp_aux_devices) {
i8042_pnp_exit();
#if defined(__ia64__)
return -ENODEV;
#else
pr_info("PNP: No PS/2 controller found. Probing ports directly.\n");
return 0;
#endif
}
if (i8042_pnp_kbd_devices)
snprintf(kbd_irq_str, sizeof(kbd_irq_str),
"%d", i8042_pnp_kbd_irq);
if (i8042_pnp_aux_devices)
snprintf(aux_irq_str, sizeof(aux_irq_str),
"%d", i8042_pnp_aux_irq);
pr_info("PNP: PS/2 Controller [%s%s%s] at %#x,%#x irq %s%s%s\n",
i8042_pnp_kbd_name, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
i8042_pnp_aux_name,
i8042_pnp_data_reg, i8042_pnp_command_reg,
kbd_irq_str, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
aux_irq_str);
#if defined(__ia64__)
if (!i8042_pnp_kbd_devices)
i8042_nokbd = true;
if (!i8042_pnp_aux_devices)
i8042_noaux = true;
#endif
if (((i8042_pnp_data_reg & ~0xf) == (i8042_data_reg & ~0xf) &&
i8042_pnp_data_reg != i8042_data_reg) ||
!i8042_pnp_data_reg) {
pr_warn("PNP: PS/2 controller has invalid data port %#x; using default %#x\n",
i8042_pnp_data_reg, i8042_data_reg);
i8042_pnp_data_reg = i8042_data_reg;
pnp_data_busted = true;
}
if (((i8042_pnp_command_reg & ~0xf) == (i8042_command_reg & ~0xf) &&
i8042_pnp_command_reg != i8042_command_reg) ||
!i8042_pnp_command_reg) {
pr_warn("PNP: PS/2 controller has invalid command port %#x; using default %#x\n",
i8042_pnp_command_reg, i8042_command_reg);
i8042_pnp_command_reg = i8042_command_reg;
pnp_data_busted = true;
}
if (!i8042_nokbd && !i8042_pnp_kbd_irq) {
pr_warn("PNP: PS/2 controller doesn't have KBD irq; using default %d\n",
i8042_kbd_irq);
i8042_pnp_kbd_irq = i8042_kbd_irq;
pnp_data_busted = true;
}
if (!i8042_noaux && !i8042_pnp_aux_irq) {
if (!pnp_data_busted && i8042_pnp_kbd_irq) {
pr_warn("PNP: PS/2 appears to have AUX port disabled, "
"if this is incorrect please boot with i8042.nopnp\n");
i8042_noaux = true;
} else {
pr_warn("PNP: PS/2 controller doesn't have AUX irq; using default %d\n",
i8042_aux_irq);
i8042_pnp_aux_irq = i8042_aux_irq;
}
}
i8042_data_reg = i8042_pnp_data_reg;
i8042_command_reg = i8042_pnp_command_reg;
i8042_kbd_irq = i8042_pnp_kbd_irq;
i8042_aux_irq = i8042_pnp_aux_irq;
#ifdef CONFIG_X86
i8042_bypass_aux_irq_test = !pnp_data_busted &&
dmi_check_system(i8042_dmi_laptop_table);
#endif
return 0;
}
#else
static inline int i8042_pnp_init(void) { return 0; }
static inline void i8042_pnp_exit(void) { }
#endif
static int __init i8042_platform_init(void)
{
int retval;
#ifdef CONFIG_X86
u8 a20_on = 0xdf;
/* Just return if pre-detection shows no i8042 controller exist */
if (!x86_platform.i8042_detect())
return -ENODEV;
#endif
/*
* On ix86 platforms touching the i8042 data register region can do really
* bad things. Because of this the region is always reserved on ix86 boxes.
*
* if (!request_region(I8042_DATA_REG, 16, "i8042"))
* return -EBUSY;
*/
i8042_kbd_irq = I8042_MAP_IRQ(1);
i8042_aux_irq = I8042_MAP_IRQ(12);
retval = i8042_pnp_init();
if (retval)
return retval;
#if defined(__ia64__)
i8042_reset = true;
#endif
#ifdef CONFIG_X86
if (dmi_check_system(i8042_dmi_reset_table))
i8042_reset = true;
if (dmi_check_system(i8042_dmi_noloop_table))
i8042_noloop = true;
if (dmi_check_system(i8042_dmi_mux_table))
i8042_nomux = false;
if (dmi_check_system(i8042_dmi_notimeout_table))
i8042_notimeout = true;
if (dmi_check_system(i8042_dmi_dritek_table))
i8042_dritek = true;
/*
* A20 was already enabled during early kernel init. But some buggy
* BIOSes (in MSI Laptops) require A20 to be enabled using 8042 to
* resume from S3. So we do it here and hope that nothing breaks.
*/
i8042_command(&a20_on, 0x10d1);
i8042_command(NULL, 0x00ff); /* Null command for SMM firmware */
#endif /* CONFIG_X86 */
return retval;
}
static inline void i8042_platform_exit(void)
{
i8042_pnp_exit();
}
#endif /* _I8042_X86IA64IO_H */
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