2005-12-10 11:30:54 -07:00
|
|
|
/*
|
|
|
|
|
* ati_remote2 - ATI/Philips USB RF remote driver
|
|
|
|
|
*
|
|
|
|
|
* Copyright (C) 2005 Ville Syrjala <syrjala@sci.fi>
|
|
|
|
|
*
|
|
|
|
|
* 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.
|
|
|
|
|
*/
|
|
|
|
|
|
2006-06-13 11:04:34 -06:00
|
|
|
#include <linux/usb/input.h>
|
2005-12-10 11:30:54 -07:00
|
|
|
|
|
|
|
|
#define DRIVER_DESC "ATI/Philips USB RF remote driver"
|
|
|
|
|
#define DRIVER_VERSION "0.1"
|
|
|
|
|
|
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
|
|
|
MODULE_VERSION(DRIVER_VERSION);
|
|
|
|
|
MODULE_AUTHOR("Ville Syrjala <syrjala@sci.fi>");
|
|
|
|
|
MODULE_LICENSE("GPL");
|
|
|
|
|
|
|
|
|
|
static unsigned int mode_mask = 0x1F;
|
|
|
|
|
module_param(mode_mask, uint, 0644);
|
|
|
|
|
MODULE_PARM_DESC(mode_mask, "Bitmask of modes to accept <4:PC><3:AUX4><2:AUX3><1:AUX2><0:AUX1>");
|
|
|
|
|
|
|
|
|
|
static struct usb_device_id ati_remote2_id_table[] = {
|
|
|
|
|
{ USB_DEVICE(0x0471, 0x0602) }, /* ATI Remote Wonder II */
|
|
|
|
|
{ }
|
|
|
|
|
};
|
|
|
|
|
MODULE_DEVICE_TABLE(usb, ati_remote2_id_table);
|
|
|
|
|
|
|
|
|
|
static struct {
|
|
|
|
|
int hw_code;
|
|
|
|
|
int key_code;
|
|
|
|
|
} ati_remote2_key_table[] = {
|
|
|
|
|
{ 0x00, KEY_0 },
|
|
|
|
|
{ 0x01, KEY_1 },
|
|
|
|
|
{ 0x02, KEY_2 },
|
|
|
|
|
{ 0x03, KEY_3 },
|
|
|
|
|
{ 0x04, KEY_4 },
|
|
|
|
|
{ 0x05, KEY_5 },
|
|
|
|
|
{ 0x06, KEY_6 },
|
|
|
|
|
{ 0x07, KEY_7 },
|
|
|
|
|
{ 0x08, KEY_8 },
|
|
|
|
|
{ 0x09, KEY_9 },
|
|
|
|
|
{ 0x0c, KEY_POWER },
|
|
|
|
|
{ 0x0d, KEY_MUTE },
|
|
|
|
|
{ 0x10, KEY_VOLUMEUP },
|
|
|
|
|
{ 0x11, KEY_VOLUMEDOWN },
|
|
|
|
|
{ 0x20, KEY_CHANNELUP },
|
|
|
|
|
{ 0x21, KEY_CHANNELDOWN },
|
|
|
|
|
{ 0x28, KEY_FORWARD },
|
|
|
|
|
{ 0x29, KEY_REWIND },
|
|
|
|
|
{ 0x2c, KEY_PLAY },
|
|
|
|
|
{ 0x30, KEY_PAUSE },
|
|
|
|
|
{ 0x31, KEY_STOP },
|
|
|
|
|
{ 0x37, KEY_RECORD },
|
|
|
|
|
{ 0x38, KEY_DVD },
|
|
|
|
|
{ 0x39, KEY_TV },
|
|
|
|
|
{ 0x54, KEY_MENU },
|
|
|
|
|
{ 0x58, KEY_UP },
|
|
|
|
|
{ 0x59, KEY_DOWN },
|
|
|
|
|
{ 0x5a, KEY_LEFT },
|
|
|
|
|
{ 0x5b, KEY_RIGHT },
|
|
|
|
|
{ 0x5c, KEY_OK },
|
|
|
|
|
{ 0x78, KEY_A },
|
|
|
|
|
{ 0x79, KEY_B },
|
|
|
|
|
{ 0x7a, KEY_C },
|
|
|
|
|
{ 0x7b, KEY_D },
|
|
|
|
|
{ 0x7c, KEY_E },
|
|
|
|
|
{ 0x7d, KEY_F },
|
|
|
|
|
{ 0x82, KEY_ENTER },
|
|
|
|
|
{ 0x8e, KEY_VENDOR },
|
|
|
|
|
{ 0x96, KEY_COFFEE },
|
|
|
|
|
{ 0xa9, BTN_LEFT },
|
|
|
|
|
{ 0xaa, BTN_RIGHT },
|
|
|
|
|
{ 0xbe, KEY_QUESTION },
|
|
|
|
|
{ 0xd5, KEY_FRONT },
|
|
|
|
|
{ 0xd0, KEY_EDIT },
|
|
|
|
|
{ 0xf9, KEY_INFO },
|
|
|
|
|
{ (0x00 << 8) | 0x3f, KEY_PROG1 },
|
|
|
|
|
{ (0x01 << 8) | 0x3f, KEY_PROG2 },
|
|
|
|
|
{ (0x02 << 8) | 0x3f, KEY_PROG3 },
|
|
|
|
|
{ (0x03 << 8) | 0x3f, KEY_PROG4 },
|
|
|
|
|
{ (0x04 << 8) | 0x3f, KEY_PC },
|
|
|
|
|
{ 0, KEY_RESERVED }
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
struct ati_remote2 {
|
|
|
|
|
struct input_dev *idev;
|
|
|
|
|
struct usb_device *udev;
|
|
|
|
|
|
|
|
|
|
struct usb_interface *intf[2];
|
|
|
|
|
struct usb_endpoint_descriptor *ep[2];
|
|
|
|
|
struct urb *urb[2];
|
|
|
|
|
void *buf[2];
|
|
|
|
|
dma_addr_t buf_dma[2];
|
|
|
|
|
|
|
|
|
|
unsigned long jiffies;
|
|
|
|
|
int mode;
|
|
|
|
|
|
|
|
|
|
char name[64];
|
|
|
|
|
char phys[64];
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id);
|
|
|
|
|
static void ati_remote2_disconnect(struct usb_interface *interface);
|
|
|
|
|
|
|
|
|
|
static struct usb_driver ati_remote2_driver = {
|
|
|
|
|
.name = "ati_remote2",
|
|
|
|
|
.probe = ati_remote2_probe,
|
|
|
|
|
.disconnect = ati_remote2_disconnect,
|
|
|
|
|
.id_table = ati_remote2_id_table,
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static int ati_remote2_open(struct input_dev *idev)
|
|
|
|
|
{
|
|
|
|
|
struct ati_remote2 *ar2 = idev->private;
|
|
|
|
|
int r;
|
|
|
|
|
|
|
|
|
|
r = usb_submit_urb(ar2->urb[0], GFP_KERNEL);
|
|
|
|
|
if (r) {
|
|
|
|
|
dev_err(&ar2->intf[0]->dev,
|
|
|
|
|
"%s: usb_submit_urb() = %d\n", __FUNCTION__, r);
|
|
|
|
|
return r;
|
|
|
|
|
}
|
|
|
|
|
r = usb_submit_urb(ar2->urb[1], GFP_KERNEL);
|
|
|
|
|
if (r) {
|
|
|
|
|
usb_kill_urb(ar2->urb[0]);
|
|
|
|
|
dev_err(&ar2->intf[1]->dev,
|
|
|
|
|
"%s: usb_submit_urb() = %d\n", __FUNCTION__, r);
|
|
|
|
|
return r;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void ati_remote2_close(struct input_dev *idev)
|
|
|
|
|
{
|
|
|
|
|
struct ati_remote2 *ar2 = idev->private;
|
|
|
|
|
|
|
|
|
|
usb_kill_urb(ar2->urb[0]);
|
|
|
|
|
usb_kill_urb(ar2->urb[1]);
|
|
|
|
|
}
|
|
|
|
|
|
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 07:55:46 -06:00
|
|
|
static void ati_remote2_input_mouse(struct ati_remote2 *ar2)
|
2005-12-10 11:30:54 -07:00
|
|
|
{
|
|
|
|
|
struct input_dev *idev = ar2->idev;
|
|
|
|
|
u8 *data = ar2->buf[0];
|
|
|
|
|
|
|
|
|
|
if (data[0] > 4) {
|
|
|
|
|
dev_err(&ar2->intf[0]->dev,
|
|
|
|
|
"Unknown mode byte (%02x %02x %02x %02x)\n",
|
|
|
|
|
data[3], data[2], data[1], data[0]);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!((1 << data[0]) & mode_mask))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
input_event(idev, EV_REL, REL_X, (s8) data[1]);
|
|
|
|
|
input_event(idev, EV_REL, REL_Y, (s8) data[2]);
|
|
|
|
|
input_sync(idev);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int ati_remote2_lookup(unsigned int hw_code)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
|
|
|
|
|
if (ati_remote2_key_table[i].hw_code == hw_code)
|
|
|
|
|
return i;
|
|
|
|
|
|
|
|
|
|
return -1;
|
|
|
|
|
}
|
|
|
|
|
|
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 07:55:46 -06:00
|
|
|
static void ati_remote2_input_key(struct ati_remote2 *ar2)
|
2005-12-10 11:30:54 -07:00
|
|
|
{
|
|
|
|
|
struct input_dev *idev = ar2->idev;
|
|
|
|
|
u8 *data = ar2->buf[1];
|
|
|
|
|
int hw_code, index;
|
|
|
|
|
|
|
|
|
|
if (data[0] > 4) {
|
|
|
|
|
dev_err(&ar2->intf[1]->dev,
|
|
|
|
|
"Unknown mode byte (%02x %02x %02x %02x)\n",
|
|
|
|
|
data[3], data[2], data[1], data[0]);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
hw_code = data[2];
|
|
|
|
|
/*
|
|
|
|
|
* Mode keys (AUX1-AUX4, PC) all generate the same code byte.
|
|
|
|
|
* Use the mode byte to figure out which one was pressed.
|
|
|
|
|
*/
|
|
|
|
|
if (hw_code == 0x3f) {
|
|
|
|
|
/*
|
|
|
|
|
* For some incomprehensible reason the mouse pad generates
|
|
|
|
|
* events which look identical to the events from the last
|
|
|
|
|
* pressed mode key. Naturally we don't want to generate key
|
|
|
|
|
* events for the mouse pad so we filter out any subsequent
|
|
|
|
|
* events from the same mode key.
|
|
|
|
|
*/
|
|
|
|
|
if (ar2->mode == data[0])
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
if (data[1] == 0)
|
|
|
|
|
ar2->mode = data[0];
|
|
|
|
|
|
|
|
|
|
hw_code |= data[0] << 8;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!((1 << data[0]) & mode_mask))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
index = ati_remote2_lookup(hw_code);
|
|
|
|
|
if (index < 0) {
|
|
|
|
|
dev_err(&ar2->intf[1]->dev,
|
|
|
|
|
"Unknown code byte (%02x %02x %02x %02x)\n",
|
|
|
|
|
data[3], data[2], data[1], data[0]);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
switch (data[1]) {
|
|
|
|
|
case 0: /* release */
|
|
|
|
|
break;
|
|
|
|
|
case 1: /* press */
|
|
|
|
|
ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_DELAY]);
|
|
|
|
|
break;
|
|
|
|
|
case 2: /* repeat */
|
|
|
|
|
|
|
|
|
|
/* No repeat for mouse buttons. */
|
|
|
|
|
if (ati_remote2_key_table[index].key_code == BTN_LEFT ||
|
|
|
|
|
ati_remote2_key_table[index].key_code == BTN_RIGHT)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
if (!time_after_eq(jiffies, ar2->jiffies))
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
ar2->jiffies = jiffies + msecs_to_jiffies(idev->rep[REP_PERIOD]);
|
|
|
|
|
break;
|
|
|
|
|
default:
|
|
|
|
|
dev_err(&ar2->intf[1]->dev,
|
|
|
|
|
"Unknown state byte (%02x %02x %02x %02x)\n",
|
|
|
|
|
data[3], data[2], data[1], data[0]);
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
input_event(idev, EV_KEY, ati_remote2_key_table[index].key_code, data[1]);
|
|
|
|
|
input_sync(idev);
|
|
|
|
|
}
|
|
|
|
|
|
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 07:55:46 -06:00
|
|
|
static void ati_remote2_complete_mouse(struct urb *urb)
|
2005-12-10 11:30:54 -07:00
|
|
|
{
|
|
|
|
|
struct ati_remote2 *ar2 = urb->context;
|
|
|
|
|
int r;
|
|
|
|
|
|
|
|
|
|
switch (urb->status) {
|
|
|
|
|
case 0:
|
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 07:55:46 -06:00
|
|
|
ati_remote2_input_mouse(ar2);
|
2005-12-10 11:30:54 -07:00
|
|
|
break;
|
|
|
|
|
case -ENOENT:
|
|
|
|
|
case -EILSEQ:
|
|
|
|
|
case -ECONNRESET:
|
|
|
|
|
case -ESHUTDOWN:
|
|
|
|
|
dev_dbg(&ar2->intf[0]->dev,
|
|
|
|
|
"%s(): urb status = %d\n", __FUNCTION__, urb->status);
|
|
|
|
|
return;
|
|
|
|
|
default:
|
|
|
|
|
dev_err(&ar2->intf[0]->dev,
|
|
|
|
|
"%s(): urb status = %d\n", __FUNCTION__, urb->status);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
r = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
|
if (r)
|
|
|
|
|
dev_err(&ar2->intf[0]->dev,
|
|
|
|
|
"%s(): usb_submit_urb() = %d\n", __FUNCTION__, r);
|
|
|
|
|
}
|
|
|
|
|
|
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 07:55:46 -06:00
|
|
|
static void ati_remote2_complete_key(struct urb *urb)
|
2005-12-10 11:30:54 -07:00
|
|
|
{
|
|
|
|
|
struct ati_remote2 *ar2 = urb->context;
|
|
|
|
|
int r;
|
|
|
|
|
|
|
|
|
|
switch (urb->status) {
|
|
|
|
|
case 0:
|
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 07:55:46 -06:00
|
|
|
ati_remote2_input_key(ar2);
|
2005-12-10 11:30:54 -07:00
|
|
|
break;
|
|
|
|
|
case -ENOENT:
|
|
|
|
|
case -EILSEQ:
|
|
|
|
|
case -ECONNRESET:
|
|
|
|
|
case -ESHUTDOWN:
|
|
|
|
|
dev_dbg(&ar2->intf[1]->dev,
|
|
|
|
|
"%s(): urb status = %d\n", __FUNCTION__, urb->status);
|
|
|
|
|
return;
|
|
|
|
|
default:
|
|
|
|
|
dev_err(&ar2->intf[1]->dev,
|
|
|
|
|
"%s(): urb status = %d\n", __FUNCTION__, urb->status);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
r = usb_submit_urb(urb, GFP_ATOMIC);
|
|
|
|
|
if (r)
|
|
|
|
|
dev_err(&ar2->intf[1]->dev,
|
|
|
|
|
"%s(): usb_submit_urb() = %d\n", __FUNCTION__, r);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int ati_remote2_input_init(struct ati_remote2 *ar2)
|
|
|
|
|
{
|
|
|
|
|
struct input_dev *idev;
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
idev = input_allocate_device();
|
|
|
|
|
if (!idev)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
ar2->idev = idev;
|
|
|
|
|
idev->private = ar2;
|
|
|
|
|
|
|
|
|
|
idev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_REL);
|
|
|
|
|
idev->keybit[LONG(BTN_MOUSE)] = BIT(BTN_LEFT) | BIT(BTN_RIGHT);
|
|
|
|
|
idev->relbit[0] = BIT(REL_X) | BIT(REL_Y);
|
|
|
|
|
for (i = 0; ati_remote2_key_table[i].key_code != KEY_RESERVED; i++)
|
|
|
|
|
set_bit(ati_remote2_key_table[i].key_code, idev->keybit);
|
|
|
|
|
|
|
|
|
|
idev->rep[REP_DELAY] = 250;
|
|
|
|
|
idev->rep[REP_PERIOD] = 33;
|
|
|
|
|
|
|
|
|
|
idev->open = ati_remote2_open;
|
|
|
|
|
idev->close = ati_remote2_close;
|
|
|
|
|
|
|
|
|
|
idev->name = ar2->name;
|
|
|
|
|
idev->phys = ar2->phys;
|
|
|
|
|
|
|
|
|
|
usb_to_input_id(ar2->udev, &idev->id);
|
|
|
|
|
idev->cdev.dev = &ar2->udev->dev;
|
|
|
|
|
|
|
|
|
|
i = input_register_device(idev);
|
|
|
|
|
if (i)
|
|
|
|
|
input_free_device(idev);
|
|
|
|
|
|
|
|
|
|
return i;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int ati_remote2_urb_init(struct ati_remote2 *ar2)
|
|
|
|
|
{
|
|
|
|
|
struct usb_device *udev = ar2->udev;
|
|
|
|
|
int i, pipe, maxp;
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < 2; i++) {
|
|
|
|
|
ar2->buf[i] = usb_buffer_alloc(udev, 4, GFP_KERNEL, &ar2->buf_dma[i]);
|
|
|
|
|
if (!ar2->buf[i])
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
ar2->urb[i] = usb_alloc_urb(0, GFP_KERNEL);
|
|
|
|
|
if (!ar2->urb[i])
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
pipe = usb_rcvintpipe(udev, ar2->ep[i]->bEndpointAddress);
|
|
|
|
|
maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
|
|
|
|
|
maxp = maxp > 4 ? 4 : maxp;
|
|
|
|
|
|
|
|
|
|
usb_fill_int_urb(ar2->urb[i], udev, pipe, ar2->buf[i], maxp,
|
|
|
|
|
i ? ati_remote2_complete_key : ati_remote2_complete_mouse,
|
|
|
|
|
ar2, ar2->ep[i]->bInterval);
|
|
|
|
|
ar2->urb[i]->transfer_dma = ar2->buf_dma[i];
|
|
|
|
|
ar2->urb[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void ati_remote2_urb_cleanup(struct ati_remote2 *ar2)
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
|
|
|
|
|
for (i = 0; i < 2; i++) {
|
2006-11-08 07:35:50 -07:00
|
|
|
usb_free_urb(ar2->urb[i]);
|
2005-12-10 11:30:54 -07:00
|
|
|
|
|
|
|
|
if (ar2->buf[i])
|
|
|
|
|
usb_buffer_free(ar2->udev, 4, ar2->buf[i], ar2->buf_dma[i]);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int ati_remote2_probe(struct usb_interface *interface, const struct usb_device_id *id)
|
|
|
|
|
{
|
|
|
|
|
struct usb_device *udev = interface_to_usbdev(interface);
|
|
|
|
|
struct usb_host_interface *alt = interface->cur_altsetting;
|
|
|
|
|
struct ati_remote2 *ar2;
|
|
|
|
|
int r;
|
|
|
|
|
|
|
|
|
|
if (alt->desc.bInterfaceNumber)
|
|
|
|
|
return -ENODEV;
|
|
|
|
|
|
|
|
|
|
ar2 = kzalloc(sizeof (struct ati_remote2), GFP_KERNEL);
|
|
|
|
|
if (!ar2)
|
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
|
|
ar2->udev = udev;
|
|
|
|
|
|
|
|
|
|
ar2->intf[0] = interface;
|
|
|
|
|
ar2->ep[0] = &alt->endpoint[0].desc;
|
|
|
|
|
|
|
|
|
|
ar2->intf[1] = usb_ifnum_to_if(udev, 1);
|
|
|
|
|
r = usb_driver_claim_interface(&ati_remote2_driver, ar2->intf[1], ar2);
|
|
|
|
|
if (r)
|
|
|
|
|
goto fail1;
|
|
|
|
|
alt = ar2->intf[1]->cur_altsetting;
|
|
|
|
|
ar2->ep[1] = &alt->endpoint[0].desc;
|
|
|
|
|
|
|
|
|
|
r = ati_remote2_urb_init(ar2);
|
|
|
|
|
if (r)
|
|
|
|
|
goto fail2;
|
|
|
|
|
|
|
|
|
|
usb_make_path(udev, ar2->phys, sizeof(ar2->phys));
|
|
|
|
|
strlcat(ar2->phys, "/input0", sizeof(ar2->phys));
|
|
|
|
|
|
|
|
|
|
strlcat(ar2->name, "ATI Remote Wonder II", sizeof(ar2->name));
|
|
|
|
|
|
|
|
|
|
r = ati_remote2_input_init(ar2);
|
|
|
|
|
if (r)
|
|
|
|
|
goto fail2;
|
|
|
|
|
|
|
|
|
|
usb_set_intfdata(interface, ar2);
|
|
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
fail2:
|
|
|
|
|
ati_remote2_urb_cleanup(ar2);
|
|
|
|
|
|
|
|
|
|
usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
|
|
|
|
|
fail1:
|
|
|
|
|
kfree(ar2);
|
|
|
|
|
|
|
|
|
|
return r;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void ati_remote2_disconnect(struct usb_interface *interface)
|
|
|
|
|
{
|
|
|
|
|
struct ati_remote2 *ar2;
|
|
|
|
|
struct usb_host_interface *alt = interface->cur_altsetting;
|
|
|
|
|
|
|
|
|
|
if (alt->desc.bInterfaceNumber)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
ar2 = usb_get_intfdata(interface);
|
|
|
|
|
usb_set_intfdata(interface, NULL);
|
|
|
|
|
|
|
|
|
|
input_unregister_device(ar2->idev);
|
|
|
|
|
|
|
|
|
|
ati_remote2_urb_cleanup(ar2);
|
|
|
|
|
|
|
|
|
|
usb_driver_release_interface(&ati_remote2_driver, ar2->intf[1]);
|
|
|
|
|
|
|
|
|
|
kfree(ar2);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int __init ati_remote2_init(void)
|
|
|
|
|
{
|
|
|
|
|
int r;
|
|
|
|
|
|
|
|
|
|
r = usb_register(&ati_remote2_driver);
|
|
|
|
|
if (r)
|
|
|
|
|
printk(KERN_ERR "ati_remote2: usb_register() = %d\n", r);
|
|
|
|
|
else
|
|
|
|
|
printk(KERN_INFO "ati_remote2: " DRIVER_DESC " " DRIVER_VERSION "\n");
|
|
|
|
|
|
|
|
|
|
return r;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void __exit ati_remote2_exit(void)
|
|
|
|
|
{
|
|
|
|
|
usb_deregister(&ati_remote2_driver);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
module_init(ati_remote2_init);
|
|
|
|
|
module_exit(ati_remote2_exit);
|
