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提交 224ee88f 编写于 作者: A Anssi Hannula 提交者： Dmitry Torokhov
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Input: add force feedback driver for PID devices 

This replaces the older PID driver which was never completed.
Signed-off-by: NAnssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
上级 f6a01c85
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Showing with 1364 addition and 414 deletion
drivers/usb/input/Kconfig
浏览文件 @ 224ee88f
...@@ -60,12 +60,12 @@ config HID_FF ...@@ -60,12 +60,12 @@ config HID_FF
If unsure, say N. If unsure, say N.
config HID_PID config HID_PID
bool "PID Devices (Microsoft Sidewinder Force Feedback 2)" bool "PID device support"
depends on HID_FF depends on HID_FF
help help
Say Y here if you have a PID-compliant joystick and wish to enable force Say Y here if you have a PID-compliant device and wish to enable force
feedback for it. The Microsoft Sidewinder Force Feedback 2 is one such feedback for it. Microsoft Sidewinder Force Feedback 2 is one of such
device. devices.
config LOGITECH_FF config LOGITECH_FF
bool "Logitech WingMan *3D support" bool "Logitech WingMan *3D support"
......
drivers/usb/input/Makefile
浏览文件 @ 224ee88f
...@@ -14,7 +14,7 @@ ifeq ($(CONFIG_USB_HIDINPUT),y) ...@@ -14,7 +14,7 @@ ifeq ($(CONFIG_USB_HIDINPUT),y)
usbhid-objs += hid-input.o usbhid-objs += hid-input.o
endif endif
ifeq ($(CONFIG_HID_PID),y) ifeq ($(CONFIG_HID_PID),y)
usbhid-objs += pid.o usbhid-objs += hid-pidff.o
endif endif
ifeq ($(CONFIG_LOGITECH_FF),y) ifeq ($(CONFIG_LOGITECH_FF),y)
usbhid-objs += hid-lgff.o usbhid-objs += hid-lgff.o
......
drivers/usb/input/hid-ff.c
浏览文件 @ 224ee88f
...@@ -44,45 +44,34 @@ struct hid_ff_initializer { ...@@ -44,45 +44,34 @@ struct hid_ff_initializer {
int (*init)(struct hid_device*); int (*init)(struct hid_device*);
}; };
/*
* We try pidff when no other driver is found because PID is the
* standards compliant way of implementing force feedback in HID.
* pidff_init() will quickly abort if the device doesn't appear to
* be a PID device
*/
static struct hid_ff_initializer inits[] = { static struct hid_ff_initializer inits[] = {
#ifdef CONFIG_LOGITECH_FF #ifdef CONFIG_LOGITECH_FF
{0x46d, 0xc211, hid_lgff_init}, // Logitech Cordless rumble pad { 0x46d, 0xc211, hid_lgff_init }, /* Logitech Cordless rumble pad */
{0x46d, 0xc283, hid_lgff_init}, // Logitech Wingman Force 3d { 0x46d, 0xc283, hid_lgff_init }, /* Logitech Wingman Force 3d */
{0x46d, 0xc295, hid_lgff_init}, // Logitech MOMO force wheel { 0x46d, 0xc295, hid_lgff_init }, /* Logitech MOMO force wheel */
{0x46d, 0xc219, hid_lgff_init}, // Logitech Cordless rumble pad 2 { 0x46d, 0xc219, hid_lgff_init }, /* Logitech Cordless rumble pad 2 */
#endif
#ifdef CONFIG_HID_PID
{0x45e, 0x001b, hid_pid_init},
#endif #endif
#ifdef CONFIG_THRUSTMASTER_FF #ifdef CONFIG_THRUSTMASTER_FF
{0x44f, 0xb304, hid_tmff_init}, { 0x44f, 0xb304, hid_tmff_init },
#endif #endif
{0, 0, NULL} /* Terminating entry */ { 0, 0, hid_pidff_init} /* Matches anything */
}; };
static struct hid_ff_initializer *hid_get_ff_init(__u16 idVendor,
__u16 idProduct)
{
struct hid_ff_initializer *init;
for (init = inits;
init->idVendor
&& !(init->idVendor == idVendor
&& init->idProduct == idProduct);
init++);
return init->idVendor? init : NULL;
}
int hid_ff_init(struct hid_device* hid) int hid_ff_init(struct hid_device* hid)
{ {
struct hid_ff_initializer *init; struct hid_ff_initializer *init;
int vendor = le16_to_cpu(hid->dev->descriptor.idVendor);
int product = le16_to_cpu(hid->dev->descriptor.idProduct);
init = hid_get_ff_init(le16_to_cpu(hid->dev->descriptor.idVendor), for (init = inits; init->idVendor; init++)
le16_to_cpu(hid->dev->descriptor.idProduct)); if (init->idVendor == vendor && init->idProduct == product)
break;
if (!init) {
dbg("hid_ff_init could not find initializer");
return -ENOSYS;
}
return init->init(hid); return init->init(hid);
} }
drivers/usb/input/hid-input.c
浏览文件 @ 224ee88f
...@@ -65,11 +65,9 @@ static const struct { ...@@ -65,11 +65,9 @@ static const struct {
#define map_rel(c) do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0) #define map_rel(c) do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
#define map_key(c) do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0) #define map_key(c) do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
#define map_led(c) do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0) #define map_led(c) do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
#define map_ff(c) do { usage->code = c; usage->type = EV_FF; bit = input->ffbit; max = FF_MAX; } while (0)
#define map_abs_clear(c) do { map_abs(c); clear_bit(c, bit); } while (0) #define map_abs_clear(c) do { map_abs(c); clear_bit(c, bit); } while (0)
#define map_key_clear(c) do { map_key(c); clear_bit(c, bit); } while (0) #define map_key_clear(c) do { map_key(c); clear_bit(c, bit); } while (0)
#define map_ff_effect(c) do { set_bit(c, input->ffbit); } while (0)
#ifdef CONFIG_USB_HIDINPUT_POWERBOOK #ifdef CONFIG_USB_HIDINPUT_POWERBOOK
...@@ -525,23 +523,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel ...@@ -525,23 +523,7 @@ static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_fiel
case HID_UP_PID: case HID_UP_PID:
set_bit(EV_FF, input->evbit);
switch(usage->hid & HID_USAGE) { switch(usage->hid & HID_USAGE) {
case 0x26: map_ff_effect(FF_CONSTANT); goto ignore;
case 0x27: map_ff_effect(FF_RAMP); goto ignore;
case 0x28: map_ff_effect(FF_CUSTOM); goto ignore;
case 0x30: map_ff_effect(FF_SQUARE); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x31: map_ff_effect(FF_SINE); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x32: map_ff_effect(FF_TRIANGLE); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x33: map_ff_effect(FF_SAW_UP); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x34: map_ff_effect(FF_SAW_DOWN); map_ff_effect(FF_PERIODIC); goto ignore;
case 0x40: map_ff_effect(FF_SPRING); goto ignore;
case 0x41: map_ff_effect(FF_DAMPER); goto ignore;
case 0x42: map_ff_effect(FF_INERTIA); goto ignore;
case 0x43: map_ff_effect(FF_FRICTION); goto ignore;
case 0x7e: map_ff(FF_GAIN); break;
case 0x83: input->ff_effects_max = field->value[0]; goto ignore;
case 0x98: map_ff(FF_AUTOCENTER); break;
case 0xa4: map_key_clear(BTN_DEAD); break; case 0xa4: map_key_clear(BTN_DEAD); break;
default: goto ignore; default: goto ignore;
} }
...@@ -698,8 +680,7 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct ...@@ -698,8 +680,7 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct
} }
if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
input->ff_effects_max = value; dbg("Maximum Effects - %d",value);
dbg("Maximum Effects - %d",input->ff_effects_max);
return; return;
} }
......
drivers/usb/input/hid-pidff.c 0 → 100644
浏览文件 @ 224ee88f
/*
* Force feedback driver for USB HID PID compliant devices
*
* Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@gmail.com>
*/
/*
* 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
*/
/* #define DEBUG */
#define debug(format, arg...) pr_debug("hid-pidff: " format "\n" , ## arg)
#include <linux/sched.h>
#include <linux/input.h>
#include <linux/usb.h>
#include "hid.h"
#define PID_EFFECTS_MAX 64
/* Report usage table used to put reports into an array */
#define PID_SET_EFFECT 0
#define PID_EFFECT_OPERATION 1
#define PID_DEVICE_GAIN 2
#define PID_POOL 3
#define PID_BLOCK_LOAD 4
#define PID_BLOCK_FREE 5
#define PID_DEVICE_CONTROL 6
#define PID_CREATE_NEW_EFFECT 7
#define PID_REQUIRED_REPORTS 7
#define PID_SET_ENVELOPE 8
#define PID_SET_CONDITION 9
#define PID_SET_PERIODIC 10
#define PID_SET_CONSTANT 11
#define PID_SET_RAMP 12
static const u8 pidff_reports[] = {
0x21, 0x77, 0x7d, 0x7f, 0x89, 0x90, 0x96, 0xab,
0x5a, 0x5f, 0x6e, 0x73, 0x74
};
/* device_control is really 0x95, but 0x96 specified as it is the usage of
the only field in that report */
/* Value usage tables used to put fields and values into arrays */
#define PID_EFFECT_BLOCK_INDEX 0
#define PID_DURATION 1
#define PID_GAIN 2
#define PID_TRIGGER_BUTTON 3
#define PID_TRIGGER_REPEAT_INT 4
#define PID_DIRECTION_ENABLE 5
#define PID_START_DELAY 6
static const u8 pidff_set_effect[] = {
0x22, 0x50, 0x52, 0x53, 0x54, 0x56, 0xa7
};
#define PID_ATTACK_LEVEL 1
#define PID_ATTACK_TIME 2
#define PID_FADE_LEVEL 3
#define PID_FADE_TIME 4
static const u8 pidff_set_envelope[] = { 0x22, 0x5b, 0x5c, 0x5d, 0x5e };
#define PID_PARAM_BLOCK_OFFSET 1
#define PID_CP_OFFSET 2
#define PID_POS_COEFFICIENT 3
#define PID_NEG_COEFFICIENT 4
#define PID_POS_SATURATION 5
#define PID_NEG_SATURATION 6
#define PID_DEAD_BAND 7
static const u8 pidff_set_condition[] = {
0x22, 0x23, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65
};
#define PID_MAGNITUDE 1
#define PID_OFFSET 2
#define PID_PHASE 3
#define PID_PERIOD 4
static const u8 pidff_set_periodic[] = { 0x22, 0x70, 0x6f, 0x71, 0x72 };
static const u8 pidff_set_constant[] = { 0x22, 0x70 };
#define PID_RAMP_START 1
#define PID_RAMP_END 2
static const u8 pidff_set_ramp[] = { 0x22, 0x75, 0x76 };
#define PID_RAM_POOL_AVAILABLE 1
static const u8 pidff_block_load[] = { 0x22, 0xac };
#define PID_LOOP_COUNT 1
static const u8 pidff_effect_operation[] = { 0x22, 0x7c };
static const u8 pidff_block_free[] = { 0x22 };
#define PID_DEVICE_GAIN_FIELD 0
static const u8 pidff_device_gain[] = { 0x7e };
#define PID_RAM_POOL_SIZE 0
#define PID_SIMULTANEOUS_MAX 1
#define PID_DEVICE_MANAGED_POOL 2
static const u8 pidff_pool[] = { 0x80, 0x83, 0xa9 };
/* Special field key tables used to put special field keys into arrays */
#define PID_ENABLE_ACTUATORS 0
#define PID_RESET 1
static const u8 pidff_device_control[] = { 0x97, 0x9a };
#define PID_CONSTANT 0
#define PID_RAMP 1
#define PID_SQUARE 2
#define PID_SINE 3
#define PID_TRIANGLE 4
#define PID_SAW_UP 5
#define PID_SAW_DOWN 6
#define PID_SPRING 7
#define PID_DAMPER 8
#define PID_INERTIA 9
#define PID_FRICTION 10
static const u8 pidff_effect_types[] = {
0x26, 0x27, 0x30, 0x31, 0x32, 0x33, 0x34,
0x40, 0x41, 0x42, 0x43
};
#define PID_BLOCK_LOAD_SUCCESS 0
#define PID_BLOCK_LOAD_FULL 1
static const u8 pidff_block_load_status[] = { 0x8c, 0x8d };
#define PID_EFFECT_START 0
#define PID_EFFECT_STOP 1
static const u8 pidff_effect_operation_status[] = { 0x79, 0x7b };
struct pidff_usage {
struct hid_field *field;
s32 *value;
};
struct pidff_device {
struct hid_device *hid;
struct hid_report *reports[sizeof(pidff_reports)];
struct pidff_usage set_effect[sizeof(pidff_set_effect)];
struct pidff_usage set_envelope[sizeof(pidff_set_envelope)];
struct pidff_usage set_condition[sizeof(pidff_set_condition)];
struct pidff_usage set_periodic[sizeof(pidff_set_periodic)];
struct pidff_usage set_constant[sizeof(pidff_set_constant)];
struct pidff_usage set_ramp[sizeof(pidff_set_ramp)];
struct pidff_usage device_gain[sizeof(pidff_device_gain)];
struct pidff_usage block_load[sizeof(pidff_block_load)];
struct pidff_usage pool[sizeof(pidff_pool)];
struct pidff_usage effect_operation[sizeof(pidff_effect_operation)];
struct pidff_usage block_free[sizeof(pidff_block_free)];
/* Special field is a field that is not composed of
usage<->value pairs that pidff_usage values are */
/* Special field in create_new_effect */
struct hid_field *create_new_effect_type;
/* Special fields in set_effect */
struct hid_field *set_effect_type;
struct hid_field *effect_direction;
/* Special field in device_control */
struct hid_field *device_control;
/* Special field in block_load */
struct hid_field *block_load_status;
/* Special field in effect_operation */
struct hid_field *effect_operation_status;
int control_id[sizeof(pidff_device_control)];
int type_id[sizeof(pidff_effect_types)];
int status_id[sizeof(pidff_block_load_status)];
int operation_id[sizeof(pidff_effect_operation_status)];
int pid_id[PID_EFFECTS_MAX];
};
/*
* Scale an unsigned value with range 0..max for the given field
*/
static int pidff_rescale(int i, int max, struct hid_field *field)
{
return i * (field->logical_maximum - field->logical_minimum) / max +
field->logical_minimum;
}
/*
* Scale a signed value in range -0x8000..0x7fff for the given field
*/
static int pidff_rescale_signed(int i, struct hid_field *field)
{
return i == 0 ? 0 : i >
0 ? i * field->logical_maximum / 0x7fff : i *
field->logical_minimum / -0x8000;
}
static void pidff_set(struct pidff_usage *usage, u16 value)
{
usage->value[0] = pidff_rescale(value, 0xffff, usage->field);
debug("calculated from %d to %d", value, usage->value[0]);
}
static void pidff_set_signed(struct pidff_usage *usage, s16 value)
{
if (usage->field->logical_minimum < 0)
usage->value[0] = pidff_rescale_signed(value, usage->field);
else {
if (value < 0)
usage->value[0] =
pidff_rescale(-value, 0x8000, usage->field);
else
usage->value[0] =
pidff_rescale(value, 0x7fff, usage->field);
}
debug("calculated from %d to %d", value, usage->value[0]);
}
/*
* Send envelope report to the device
*/
static void pidff_set_envelope_report(struct pidff_device *pidff,
struct ff_envelope *envelope)
{
pidff->set_envelope[PID_EFFECT_BLOCK_INDEX].value[0] =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0];
pidff->set_envelope[PID_ATTACK_LEVEL].value[0] =
pidff_rescale(envelope->attack_level >
0x7fff ? 0x7fff : envelope->attack_level, 0x7fff,
pidff->set_envelope[PID_ATTACK_LEVEL].field);
pidff->set_envelope[PID_FADE_LEVEL].value[0] =
pidff_rescale(envelope->fade_level >
0x7fff ? 0x7fff : envelope->fade_level, 0x7fff,
pidff->set_envelope[PID_FADE_LEVEL].field);
pidff->set_envelope[PID_ATTACK_TIME].value[0] = envelope->attack_length;
pidff->set_envelope[PID_FADE_TIME].value[0] = envelope->fade_length;
debug("attack %u => %d", envelope->attack_level,
pidff->set_envelope[PID_ATTACK_LEVEL].value[0]);
hid_submit_report(pidff->hid, pidff->reports[PID_SET_ENVELOPE],
USB_DIR_OUT);
}
/*
* Test if the new envelope differs from old one
*/
static int pidff_needs_set_envelope(struct ff_envelope *envelope,
struct ff_envelope *old)
{
return envelope->attack_level != old->attack_level ||
envelope->fade_level != old->fade_level ||
envelope->attack_length != old->attack_length ||
envelope->fade_length != old->fade_length;
}
/*
* Send constant force report to the device
*/
static void pidff_set_constant_force_report(struct pidff_device *pidff,
struct ff_effect *effect)
{
pidff->set_constant[PID_EFFECT_BLOCK_INDEX].value[0] =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0];
pidff_set_signed(&pidff->set_constant[PID_MAGNITUDE],
effect->u.constant.level);
hid_submit_report(pidff->hid, pidff->reports[PID_SET_CONSTANT],
USB_DIR_OUT);
}
/*
* Test if the constant parameters have changed between effects
*/
static int pidff_needs_set_constant(struct ff_effect *effect,
struct ff_effect *old)
{
return effect->u.constant.level != old->u.constant.level;
}
/*
* Send set effect report to the device
*/
static void pidff_set_effect_report(struct pidff_device *pidff,
struct ff_effect *effect)
{
pidff->set_effect[PID_EFFECT_BLOCK_INDEX].value[0] =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0];
pidff->set_effect_type->value[0] =
pidff->create_new_effect_type->value[0];
pidff->set_effect[PID_DURATION].value[0] = effect->replay.length;
pidff->set_effect[PID_TRIGGER_BUTTON].value[0] = effect->trigger.button;
pidff->set_effect[PID_TRIGGER_REPEAT_INT].value[0] =
effect->trigger.interval;
pidff->set_effect[PID_GAIN].value[0] =
pidff->set_effect[PID_GAIN].field->logical_maximum;
pidff->set_effect[PID_DIRECTION_ENABLE].value[0] = 1;
pidff->effect_direction->value[0] =
pidff_rescale(effect->direction, 0xffff,
pidff->effect_direction);
pidff->set_effect[PID_START_DELAY].value[0] = effect->replay.delay;
hid_submit_report(pidff->hid, pidff->reports[PID_SET_EFFECT],
USB_DIR_OUT);
}
/*
* Test if the values used in set_effect have changed
*/
static int pidff_needs_set_effect(struct ff_effect *effect,
struct ff_effect *old)
{
return effect->replay.length != old->replay.length ||
effect->trigger.interval != old->trigger.interval ||
effect->trigger.button != old->trigger.button ||
effect->direction != old->direction ||
effect->replay.delay != old->replay.delay;
}
/*
* Send periodic effect report to the device
*/
static void pidff_set_periodic_report(struct pidff_device *pidff,
struct ff_effect *effect)
{
pidff->set_periodic[PID_EFFECT_BLOCK_INDEX].value[0] =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0];
pidff_set_signed(&pidff->set_periodic[PID_MAGNITUDE],
effect->u.periodic.magnitude);
pidff_set_signed(&pidff->set_periodic[PID_OFFSET],
effect->u.periodic.offset);
pidff_set(&pidff->set_periodic[PID_PHASE], effect->u.periodic.phase);
pidff->set_periodic[PID_PERIOD].value[0] = effect->u.periodic.period;
hid_submit_report(pidff->hid, pidff->reports[PID_SET_PERIODIC],
USB_DIR_OUT);
}
/*
* Test if periodic effect parameters have changed
*/
static int pidff_needs_set_periodic(struct ff_effect *effect,
struct ff_effect *old)
{
return effect->u.periodic.magnitude != old->u.periodic.magnitude ||
effect->u.periodic.offset != old->u.periodic.offset ||
effect->u.periodic.phase != old->u.periodic.phase ||
effect->u.periodic.period != old->u.periodic.period;
}
/*
* Send condition effect reports to the device
*/
static void pidff_set_condition_report(struct pidff_device *pidff,
struct ff_effect *effect)
{
int i;
pidff->set_condition[PID_EFFECT_BLOCK_INDEX].value[0] =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0];
for (i = 0; i < 2; i++) {
pidff->set_condition[PID_PARAM_BLOCK_OFFSET].value[0] = i;
pidff_set_signed(&pidff->set_condition[PID_CP_OFFSET],
effect->u.condition[i].center);
pidff_set_signed(&pidff->set_condition[PID_POS_COEFFICIENT],
effect->u.condition[i].right_coeff);
pidff_set_signed(&pidff->set_condition[PID_NEG_COEFFICIENT],
effect->u.condition[i].left_coeff);
pidff_set(&pidff->set_condition[PID_POS_SATURATION],
effect->u.condition[i].right_saturation);
pidff_set(&pidff->set_condition[PID_NEG_SATURATION],
effect->u.condition[i].left_saturation);
pidff_set(&pidff->set_condition[PID_DEAD_BAND],
effect->u.condition[i].deadband);
hid_wait_io(pidff->hid);
hid_submit_report(pidff->hid, pidff->reports[PID_SET_CONDITION],
USB_DIR_OUT);
}
}
/*
* Test if condition effect parameters have changed
*/
static int pidff_needs_set_condition(struct ff_effect *effect,
struct ff_effect *old)
{
int i;
int ret = 0;
for (i = 0; i < 2; i++) {
struct ff_condition_effect *cond = &effect->u.condition[i];
struct ff_condition_effect *old_cond = &old->u.condition[i];
ret |= cond->center != old_cond->center ||
cond->right_coeff != old_cond->right_coeff ||
cond->left_coeff != old_cond->left_coeff ||
cond->right_saturation != old_cond->right_saturation ||
cond->left_saturation != old_cond->left_saturation ||
cond->deadband != old_cond->deadband;
}
return ret;
}
/*
* Send ramp force report to the device
*/
static void pidff_set_ramp_force_report(struct pidff_device *pidff,
struct ff_effect *effect)
{
pidff->set_ramp[PID_EFFECT_BLOCK_INDEX].value[0] =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0];
pidff_set_signed(&pidff->set_ramp[PID_RAMP_START],
effect->u.ramp.start_level);
pidff_set_signed(&pidff->set_ramp[PID_RAMP_END],
effect->u.ramp.end_level);
hid_submit_report(pidff->hid, pidff->reports[PID_SET_RAMP],
USB_DIR_OUT);
}
/*
* Test if ramp force parameters have changed
*/
static int pidff_needs_set_ramp(struct ff_effect *effect, struct ff_effect *old)
{
return effect->u.ramp.start_level != old->u.ramp.start_level ||
effect->u.ramp.end_level != old->u.ramp.end_level;
}
/*
* Send a request for effect upload to the device
*
* Returns 0 if device reported success, -ENOSPC if the device reported memory
* is full. Upon unknown response the function will retry for 60 times, if
* still unsuccessful -EIO is returned.
*/
static int pidff_request_effect_upload(struct pidff_device *pidff, int efnum)
{
int j;
pidff->create_new_effect_type->value[0] = efnum;
hid_submit_report(pidff->hid, pidff->reports[PID_CREATE_NEW_EFFECT],
USB_DIR_OUT);
debug("create_new_effect sent, type: %d", efnum);
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0] = 0;
pidff->block_load_status->value[0] = 0;
hid_wait_io(pidff->hid);
for (j = 0; j < 60; j++) {
debug("pid_block_load requested");
hid_submit_report(pidff->hid, pidff->reports[PID_BLOCK_LOAD],
USB_DIR_IN);
hid_wait_io(pidff->hid);
if (pidff->block_load_status->value[0] ==
pidff->status_id[PID_BLOCK_LOAD_SUCCESS]) {
debug("device reported free memory: %d bytes",
pidff->block_load[PID_RAM_POOL_AVAILABLE].value ?
pidff->block_load[PID_RAM_POOL_AVAILABLE].value[0] : -1);
return 0;
}
if (pidff->block_load_status->value[0] ==
pidff->status_id[PID_BLOCK_LOAD_FULL]) {
debug("not enough memory free: %d bytes",
pidff->block_load[PID_RAM_POOL_AVAILABLE].value ?
pidff->block_load[PID_RAM_POOL_AVAILABLE].value[0] : -1);
return -ENOSPC;
}
}
printk(KERN_ERR "hid-pidff: pid_block_load failed 60 times\n");
return -EIO;
}
/*
* Play the effect with PID id n times
*/
static void pidff_playback_pid(struct pidff_device *pidff, int pid_id, int n)
{
pidff->effect_operation[PID_EFFECT_BLOCK_INDEX].value[0] = pid_id;
if (n == 0) {
pidff->effect_operation_status->value[0] =
pidff->operation_id[PID_EFFECT_STOP];
} else {
pidff->effect_operation_status->value[0] =
pidff->operation_id[PID_EFFECT_START];
pidff->effect_operation[PID_LOOP_COUNT].value[0] = n;
}
hid_wait_io(pidff->hid);
hid_submit_report(pidff->hid, pidff->reports[PID_EFFECT_OPERATION],
USB_DIR_OUT);
}
/**
* Play the effect with effect id @effect_id for @value times
*/
static int pidff_playback(struct input_dev *dev, int effect_id, int value)
{
struct pidff_device *pidff = dev->ff->private;
pidff_playback_pid(pidff, pidff->pid_id[effect_id], value);
return 0;
}
/*
* Erase effect with PID id
*/
static void pidff_erase_pid(struct pidff_device *pidff, int pid_id)
{
pidff->block_free[PID_EFFECT_BLOCK_INDEX].value[0] = pid_id;
hid_submit_report(pidff->hid, pidff->reports[PID_BLOCK_FREE],
USB_DIR_OUT);
}
/*
* Stop and erase effect with effect_id
*/
static int pidff_erase_effect(struct input_dev *dev, int effect_id)
{
struct pidff_device *pidff = dev->ff->private;
int pid_id = pidff->pid_id[effect_id];
debug("starting to erase %d/%d", effect_id, pidff->pid_id[effect_id]);
pidff_playback_pid(pidff, pid_id, 0);
pidff_erase_pid(pidff, pid_id);
return 0;
}
/*
* Effect upload handler
*/
static int pidff_upload_effect(struct input_dev *dev, struct ff_effect *effect,
struct ff_effect *old)
{
struct pidff_device *pidff = dev->ff->private;
int type_id;
int error;
switch (effect->type) {
case FF_CONSTANT:
if (!old) {
error = pidff_request_effect_upload(pidff,
pidff->type_id[PID_CONSTANT]);
if (error)
return error;
}
if (!old || pidff_needs_set_effect(effect, old))
pidff_set_effect_report(pidff, effect);
if (!old || pidff_needs_set_constant(effect, old))
pidff_set_constant_force_report(pidff, effect);
if (!old ||
pidff_needs_set_envelope(&effect->u.constant.envelope,
&old->u.constant.envelope))
pidff_set_envelope_report(pidff,
&effect->u.constant.envelope);
break;
case FF_PERIODIC:
if (!old) {
switch (effect->u.periodic.waveform) {
case FF_SQUARE:
type_id = PID_SQUARE;
break;
case FF_TRIANGLE:
type_id = PID_TRIANGLE;
break;
case FF_SINE:
type_id = PID_SINE;
break;
case FF_SAW_UP:
type_id = PID_SAW_UP;
break;
case FF_SAW_DOWN:
type_id = PID_SAW_DOWN;
break;
default:
printk(KERN_ERR
"hid-pidff: invalid waveform\n");
return -EINVAL;
}
error = pidff_request_effect_upload(pidff,
pidff->type_id[type_id]);
if (error)
return error;
}
if (!old || pidff_needs_set_effect(effect, old))
pidff_set_effect_report(pidff, effect);
if (!old || pidff_needs_set_periodic(effect, old))
pidff_set_periodic_report(pidff, effect);
if (!old ||
pidff_needs_set_envelope(&effect->u.periodic.envelope,
&old->u.periodic.envelope))
pidff_set_envelope_report(pidff,
&effect->u.periodic.envelope);
break;
case FF_RAMP:
if (!old) {
error = pidff_request_effect_upload(pidff,
pidff->type_id[PID_RAMP]);
if (error)
return error;
}
if (!old || pidff_needs_set_effect(effect, old))
pidff_set_effect_report(pidff, effect);
if (!old || pidff_needs_set_ramp(effect, old))
pidff_set_ramp_force_report(pidff, effect);
if (!old ||
pidff_needs_set_envelope(&effect->u.ramp.envelope,
&old->u.ramp.envelope))
pidff_set_envelope_report(pidff,
&effect->u.ramp.envelope);
break;
case FF_SPRING:
if (!old) {
error = pidff_request_effect_upload(pidff,
pidff->type_id[PID_SPRING]);
if (error)
return error;
}
if (!old || pidff_needs_set_effect(effect, old))
pidff_set_effect_report(pidff, effect);
if (!old || pidff_needs_set_condition(effect, old))
pidff_set_condition_report(pidff, effect);
break;
case FF_FRICTION:
if (!old) {
error = pidff_request_effect_upload(pidff,
pidff->type_id[PID_FRICTION]);
if (error)
return error;
}
if (!old || pidff_needs_set_effect(effect, old))
pidff_set_effect_report(pidff, effect);
if (!old || pidff_needs_set_condition(effect, old))
pidff_set_condition_report(pidff, effect);
break;
case FF_DAMPER:
if (!old) {
error = pidff_request_effect_upload(pidff,
pidff->type_id[PID_DAMPER]);
if (error)
return error;
}
if (!old || pidff_needs_set_effect(effect, old))
pidff_set_effect_report(pidff, effect);
if (!old || pidff_needs_set_condition(effect, old))
pidff_set_condition_report(pidff, effect);
break;
case FF_INERTIA:
if (!old) {
error = pidff_request_effect_upload(pidff,
pidff->type_id[PID_INERTIA]);
if (error)
return error;
}
if (!old || pidff_needs_set_effect(effect, old))
pidff_set_effect_report(pidff, effect);
if (!old || pidff_needs_set_condition(effect, old))
pidff_set_condition_report(pidff, effect);
break;
default:
printk(KERN_ERR "hid-pidff: invalid type\n");
return -EINVAL;
}
if (!old)
pidff->pid_id[effect->id] =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0];
debug("uploaded");
return 0;
}
/*
* set_gain() handler
*/
static void pidff_set_gain(struct input_dev *dev, u16 gain)
{
struct pidff_device *pidff = dev->ff->private;
pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], gain);
hid_submit_report(pidff->hid, pidff->reports[PID_DEVICE_GAIN],
USB_DIR_OUT);
}
static void pidff_autocenter(struct pidff_device *pidff, u16 magnitude)
{
struct hid_field *field =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].field;
if (!magnitude) {
pidff_playback_pid(pidff, field->logical_minimum, 0);
return;
}
pidff_playback_pid(pidff, field->logical_minimum, 1);
pidff->set_effect[PID_EFFECT_BLOCK_INDEX].value[0] =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_minimum;
pidff->set_effect_type->value[0] = pidff->type_id[PID_SPRING];
pidff->set_effect[PID_DURATION].value[0] = 0;
pidff->set_effect[PID_TRIGGER_BUTTON].value[0] = 0;
pidff->set_effect[PID_TRIGGER_REPEAT_INT].value[0] = 0;
pidff_set(&pidff->set_effect[PID_GAIN], magnitude);
pidff->set_effect[PID_START_DELAY].value[0] = 0;
hid_submit_report(pidff->hid, pidff->reports[PID_SET_EFFECT],
USB_DIR_OUT);
}
/*
* pidff_set_autocenter() handler
*/
static void pidff_set_autocenter(struct input_dev *dev, u16 magnitude)
{
struct pidff_device *pidff = dev->ff->private;
pidff_autocenter(pidff, magnitude);
}
/*
* Find fields from a report and fill a pidff_usage
*/
static int pidff_find_fields(struct pidff_usage *usage, const u8 *table,
struct hid_report *report, int count, int strict)
{
int i, j, k, found;
for (k = 0; k < count; k++) {
found = 0;
for (i = 0; i < report->maxfield; i++) {
if (report->field[i]->maxusage !=
report->field[i]->report_count) {
debug("maxusage and report_count do not match, "
"skipping");
continue;
}
for (j = 0; j < report->field[i]->maxusage; j++) {
if (report->field[i]->usage[j].hid ==
(HID_UP_PID | table[k])) {
debug("found %d at %d->%d", k, i, j);
usage[k].field = report->field[i];
usage[k].value =
&report->field[i]->value[j];
found = 1;
break;
}
}
if (found)
break;
}
if (!found && strict) {
debug("failed to locate %d", k);
return -1;
}
}
return 0;
}
/*
* Return index into pidff_reports for the given usage
*/
static int pidff_check_usage(int usage)
{
int i;
for (i = 0; i < sizeof(pidff_reports); i++)
if (usage == (HID_UP_PID | pidff_reports[i]))
return i;
return -1;
}
/*
* Find the reports and fill pidff->reports[]
* report_type specifies either OUTPUT or FEATURE reports
*/
static void pidff_find_reports(struct hid_device *hid, int report_type,
struct pidff_device *pidff)
{
struct hid_report *report;
int i, ret;
list_for_each_entry(report,
&hid->report_enum[report_type].report_list, list) {
if (report->maxfield < 1)
continue;
ret = pidff_check_usage(report->field[0]->logical);
if (ret != -1) {
debug("found usage 0x%02x from field->logical",
pidff_reports[ret]);
pidff->reports[ret] = report;
continue;
}
/*
* Sometimes logical collections are stacked to indicate
* different usages for the report and the field, in which
* case we want the usage of the parent. However, Linux HID
* implementation hides this fact, so we have to dig it up
* ourselves
*/
i = report->field[0]->usage[0].collection_index;
if (i <= 0 ||
hid->collection[i - 1].type != HID_COLLECTION_LOGICAL)
continue;
ret = pidff_check_usage(hid->collection[i - 1].usage);
if (ret != -1 && !pidff->reports[ret]) {
debug("found usage 0x%02x from collection array",
pidff_reports[ret]);
pidff->reports[ret] = report;
}
}
}
/*
* Test if the required reports have been found
*/
static int pidff_reports_ok(struct pidff_device *pidff)
{
int i;
for (i = 0; i <= PID_REQUIRED_REPORTS; i++) {
if (!pidff->reports[i]) {
debug("%d missing", i);
return 0;
}
}
return 1;
}
/*
* Find a field with a specific usage within a report
*/
static struct hid_field *pidff_find_special_field(struct hid_report *report,
int usage, int enforce_min)
{
int i;
for (i = 0; i < report->maxfield; i++) {
if (report->field[i]->logical == (HID_UP_PID | usage) &&
report->field[i]->report_count > 0) {
if (!enforce_min ||
report->field[i]->logical_minimum == 1)
return report->field[i];
else {
printk(KERN_ERR "hid-pidff: logical_minimum "
"is not 1 as it should be\n");
return NULL;
}
}
}
return NULL;
}
/*
* Fill a pidff->*_id struct table
*/
static int pidff_find_special_keys(int *keys, struct hid_field *fld,
const u8 *usagetable, int count)
{
int i, j;
int found = 0;
for (i = 0; i < count; i++) {
for (j = 0; j < fld->maxusage; j++) {
if (fld->usage[j].hid == (HID_UP_PID | usagetable[i])) {
keys[i] = j + 1;
found++;
break;
}
}
}
return found;
}
#define PIDFF_FIND_SPECIAL_KEYS(keys, field, name) \
pidff_find_special_keys(pidff->keys, pidff->field, pidff_ ## name, \
sizeof(pidff_ ## name))
/*
* Find and check the special fields
*/
static int pidff_find_special_fields(struct pidff_device *pidff)
{
debug("finding special fields");
pidff->create_new_effect_type =
pidff_find_special_field(pidff->reports[PID_CREATE_NEW_EFFECT],
0x25, 1);
pidff->set_effect_type =
pidff_find_special_field(pidff->reports[PID_SET_EFFECT],
0x25, 1);
pidff->effect_direction =
pidff_find_special_field(pidff->reports[PID_SET_EFFECT],
0x57, 0);
pidff->device_control =
pidff_find_special_field(pidff->reports[PID_DEVICE_CONTROL],
0x96, 1);
pidff->block_load_status =
pidff_find_special_field(pidff->reports[PID_BLOCK_LOAD],
0x8b, 1);
pidff->effect_operation_status =
pidff_find_special_field(pidff->reports[PID_EFFECT_OPERATION],
0x78, 1);
debug("search done");
if (!pidff->create_new_effect_type || !pidff->set_effect_type) {
printk(KERN_ERR "hid-pidff: effect lists not found\n");
return -1;
}
if (!pidff->effect_direction) {
printk(KERN_ERR "hid-pidff: direction field not found\n");
return -1;
}
if (!pidff->device_control) {
printk(KERN_ERR "hid-pidff: device control field not found\n");
return -1;
}
if (!pidff->block_load_status) {
printk(KERN_ERR
"hid-pidff: block load status field not found\n");
return -1;
}
if (!pidff->effect_operation_status) {
printk(KERN_ERR
"hid-pidff: effect operation field not found\n");
return -1;
}
pidff_find_special_keys(pidff->control_id, pidff->device_control,
pidff_device_control,
sizeof(pidff_device_control));
PIDFF_FIND_SPECIAL_KEYS(control_id, device_control, device_control);
if (!PIDFF_FIND_SPECIAL_KEYS(type_id, create_new_effect_type,
effect_types)) {
printk(KERN_ERR "hid-pidff: no effect types found\n");
return -1;
}
if (PIDFF_FIND_SPECIAL_KEYS(status_id, block_load_status,
block_load_status) !=
sizeof(pidff_block_load_status)) {
printk(KERN_ERR
"hidpidff: block load status identifiers not found\n");
return -1;
}
if (PIDFF_FIND_SPECIAL_KEYS(operation_id, effect_operation_status,
effect_operation_status) !=
sizeof(pidff_effect_operation_status)) {
printk(KERN_ERR
"hidpidff: effect operation identifiers not found\n");
return -1;
}
return 0;
}
/**
* Find the implemented effect types
*/
static int pidff_find_effects(struct pidff_device *pidff,
struct input_dev *dev)
{
int i;
for (i = 0; i < sizeof(pidff_effect_types); i++) {
int pidff_type = pidff->type_id[i];
if (pidff->set_effect_type->usage[pidff_type].hid !=
pidff->create_new_effect_type->usage[pidff_type].hid) {
printk(KERN_ERR "hid-pidff: "
"effect type number %d is invalid\n", i);
return -1;
}
}
if (pidff->type_id[PID_CONSTANT])
set_bit(FF_CONSTANT, dev->ffbit);
if (pidff->type_id[PID_RAMP])
set_bit(FF_RAMP, dev->ffbit);
if (pidff->type_id[PID_SQUARE]) {
set_bit(FF_SQUARE, dev->ffbit);
set_bit(FF_PERIODIC, dev->ffbit);
}
if (pidff->type_id[PID_SINE]) {
set_bit(FF_SINE, dev->ffbit);
set_bit(FF_PERIODIC, dev->ffbit);
}
if (pidff->type_id[PID_TRIANGLE]) {
set_bit(FF_TRIANGLE, dev->ffbit);
set_bit(FF_PERIODIC, dev->ffbit);
}
if (pidff->type_id[PID_SAW_UP]) {
set_bit(FF_SAW_UP, dev->ffbit);
set_bit(FF_PERIODIC, dev->ffbit);
}
if (pidff->type_id[PID_SAW_DOWN]) {
set_bit(FF_SAW_DOWN, dev->ffbit);
set_bit(FF_PERIODIC, dev->ffbit);
}
if (pidff->type_id[PID_SPRING])
set_bit(FF_SPRING, dev->ffbit);
if (pidff->type_id[PID_DAMPER])
set_bit(FF_DAMPER, dev->ffbit);
if (pidff->type_id[PID_INERTIA])
set_bit(FF_INERTIA, dev->ffbit);
if (pidff->type_id[PID_FRICTION])
set_bit(FF_FRICTION, dev->ffbit);
return 0;
}
#define PIDFF_FIND_FIELDS(name, report, strict) \
pidff_find_fields(pidff->name, pidff_ ## name, \
pidff->reports[report], \
sizeof(pidff_ ## name), strict)
/*
* Fill and check the pidff_usages
*/
static int pidff_init_fields(struct pidff_device *pidff, struct input_dev *dev)
{
int envelope_ok = 0;
if (PIDFF_FIND_FIELDS(set_effect, PID_SET_EFFECT, 1)) {
printk(KERN_ERR
"hid-pidff: unknown set_effect report layout\n");
return -ENODEV;
}
PIDFF_FIND_FIELDS(block_load, PID_BLOCK_LOAD, 0);
if (!pidff->block_load[PID_EFFECT_BLOCK_INDEX].value) {
printk(KERN_ERR
"hid-pidff: unknown pid_block_load report layout\n");
return -ENODEV;
}
if (PIDFF_FIND_FIELDS(effect_operation, PID_EFFECT_OPERATION, 1)) {
printk(KERN_ERR
"hid-pidff: unknown effect_operation report layout\n");
return -ENODEV;
}
if (PIDFF_FIND_FIELDS(block_free, PID_BLOCK_FREE, 1)) {
printk(KERN_ERR
"hid-pidff: unknown pid_block_free report layout\n");
return -ENODEV;
}
if (!PIDFF_FIND_FIELDS(set_envelope, PID_SET_ENVELOPE, 1))
envelope_ok = 1;
if (pidff_find_special_fields(pidff) || pidff_find_effects(pidff, dev))
return -ENODEV;
if (!envelope_ok) {
if (test_and_clear_bit(FF_CONSTANT, dev->ffbit))
printk(KERN_WARNING "hid-pidff: "
"has constant effect but no envelope\n");
if (test_and_clear_bit(FF_RAMP, dev->ffbit))
printk(KERN_WARNING "hid-pidff: "
"has ramp effect but no envelope\n");
if (test_and_clear_bit(FF_PERIODIC, dev->ffbit))
printk(KERN_WARNING "hid-pidff: "
"has periodic effect but no envelope\n");
}
if (test_bit(FF_CONSTANT, dev->ffbit) &&
PIDFF_FIND_FIELDS(set_constant, PID_SET_CONSTANT, 1)) {
printk(KERN_WARNING
"hid-pidff: unknown constant effect layout\n");
clear_bit(FF_CONSTANT, dev->ffbit);
}
if (test_bit(FF_RAMP, dev->ffbit) &&
PIDFF_FIND_FIELDS(set_ramp, PID_SET_RAMP, 1)) {
printk(KERN_WARNING "hid-pidff: unknown ramp effect layout\n");
clear_bit(FF_RAMP, dev->ffbit);
}
if ((test_bit(FF_SPRING, dev->ffbit) ||
test_bit(FF_DAMPER, dev->ffbit) ||
test_bit(FF_FRICTION, dev->ffbit) ||
test_bit(FF_INERTIA, dev->ffbit)) &&
PIDFF_FIND_FIELDS(set_condition, PID_SET_CONDITION, 1)) {
printk(KERN_WARNING
"hid-pidff: unknown condition effect layout\n");
clear_bit(FF_SPRING, dev->ffbit);
clear_bit(FF_DAMPER, dev->ffbit);
clear_bit(FF_FRICTION, dev->ffbit);
clear_bit(FF_INERTIA, dev->ffbit);
}
if (test_bit(FF_PERIODIC, dev->ffbit) &&
PIDFF_FIND_FIELDS(set_periodic, PID_SET_PERIODIC, 1)) {
printk(KERN_WARNING
"hid-pidff: unknown periodic effect layout\n");
clear_bit(FF_PERIODIC, dev->ffbit);
}
PIDFF_FIND_FIELDS(pool, PID_POOL, 0);
if (!PIDFF_FIND_FIELDS(device_gain, PID_DEVICE_GAIN, 1))
set_bit(FF_GAIN, dev->ffbit);
return 0;
}
/*
* Reset the device
*/
static void pidff_reset(struct pidff_device *pidff)
{
struct hid_device *hid = pidff->hid;
int i = 0;
pidff->device_control->value[0] = pidff->control_id[PID_RESET];
/* We reset twice as sometimes hid_wait_io isn't waiting long enough */
hid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT);
hid_wait_io(hid);
hid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT);
hid_wait_io(hid);
pidff->device_control->value[0] =
pidff->control_id[PID_ENABLE_ACTUATORS];
hid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT);
hid_wait_io(hid);
/* pool report is sometimes messed up, refetch it */
hid_submit_report(hid, pidff->reports[PID_POOL], USB_DIR_IN);
hid_wait_io(hid);
if (pidff->pool[PID_SIMULTANEOUS_MAX].value) {
int sim_effects = pidff->pool[PID_SIMULTANEOUS_MAX].value[0];
while (sim_effects < 2) {
if (i++ > 20) {
printk(KERN_WARNING "hid-pidff: device reports "
"%d simultaneous effects\n",
sim_effects);
break;
}
debug("pid_pool requested again");
hid_submit_report(hid, pidff->reports[PID_POOL],
USB_DIR_IN);
hid_wait_io(hid);
}
}
}
/*
* Test if autocenter modification is using the supported method
*/
static int pidff_check_autocenter(struct pidff_device *pidff,
struct input_dev *dev)
{
int error;
/*
* Let's find out if autocenter modification is supported
* Specification doesn't specify anything, so we request an
* effect upload and cancel it immediately. If the approved
* effect id was one above the minimum, then we assume the first
* effect id is a built-in spring type effect used for autocenter
*/
error = pidff_request_effect_upload(pidff, 1);
if (error) {
printk(KERN_ERR "hid-pidff: upload request failed\n");
return error;
}
if (pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0] ==
pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_minimum + 1) {
pidff_autocenter(pidff, 0xffff);
set_bit(FF_AUTOCENTER, dev->ffbit);
} else {
printk(KERN_NOTICE "hid-pidff: "
"device has unknown autocenter control method\n");
}
pidff_erase_pid(pidff,
pidff->block_load[PID_EFFECT_BLOCK_INDEX].value[0]);
return 0;
}
/*
* Check if the device is PID and initialize it
*/
int hid_pidff_init(struct hid_device *hid)
{
struct pidff_device *pidff;
struct hid_input *hidinput = list_entry(hid->inputs.next,
struct hid_input, list);
struct input_dev *dev = hidinput->input;
struct ff_device *ff;
int max_effects;
int error;
debug("starting pid init");
if (list_empty(&hid->report_enum[HID_OUTPUT_REPORT].report_list)) {
debug("not a PID device, no output report");
return -ENODEV;
}
pidff = kzalloc(sizeof(*pidff), GFP_KERNEL);
if (!pidff)
return -ENOMEM;
pidff->hid = hid;
pidff_find_reports(hid, HID_OUTPUT_REPORT, pidff);
pidff_find_reports(hid, HID_FEATURE_REPORT, pidff);
if (!pidff_reports_ok(pidff)) {
debug("reports not ok, aborting");
error = -ENODEV;
goto fail;
}
error = pidff_init_fields(pidff, dev);
if (error)
goto fail;
pidff_reset(pidff);
if (test_bit(FF_GAIN, dev->ffbit)) {
pidff_set(&pidff->device_gain[PID_DEVICE_GAIN_FIELD], 0xffff);
hid_submit_report(pidff->hid, pidff->reports[PID_DEVICE_GAIN],
USB_DIR_OUT);
}
error = pidff_check_autocenter(pidff, dev);
if (error)
goto fail;
max_effects =
pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_maximum -
pidff->block_load[PID_EFFECT_BLOCK_INDEX].field->logical_minimum +
1;
debug("max effects is %d", max_effects);
if (max_effects > PID_EFFECTS_MAX)
max_effects = PID_EFFECTS_MAX;
if (pidff->pool[PID_SIMULTANEOUS_MAX].value)
debug("max simultaneous effects is %d",
pidff->pool[PID_SIMULTANEOUS_MAX].value[0]);
if (pidff->pool[PID_RAM_POOL_SIZE].value)
debug("device memory size is %d bytes",
pidff->pool[PID_RAM_POOL_SIZE].value[0]);
if (pidff->pool[PID_DEVICE_MANAGED_POOL].value &&
pidff->pool[PID_DEVICE_MANAGED_POOL].value[0] == 0) {
printk(KERN_NOTICE "hid-pidff: "
"device does not support device managed pool\n");
goto fail;
}
error = input_ff_create(dev, max_effects);
if (error)
goto fail;
ff = dev->ff;
ff->private = pidff;
ff->upload = pidff_upload_effect;
ff->erase = pidff_erase_effect;
ff->set_gain = pidff_set_gain;
ff->set_autocenter = pidff_set_autocenter;
ff->playback = pidff_playback;
printk(KERN_INFO "Force feedback for USB HID PID devices by "
"Anssi Hannula <anssi.hannula@gmail.com>\n");
return 0;
fail:
kfree(pidff);
return error;
}
drivers/usb/input/hid.h
浏览文件 @ 224ee88f
...@@ -527,14 +527,25 @@ int hid_wait_io(struct hid_device* hid); ...@@ -527,14 +527,25 @@ int hid_wait_io(struct hid_device* hid);
#ifdef CONFIG_HID_FF #ifdef CONFIG_HID_FF
int hid_ff_init(struct hid_device *hid); int hid_ff_init(struct hid_device *hid);
int hid_lgff_init(struct hid_device *hid);
int hid_tmff_init(struct hid_device *hid);
#ifdef CONFIG_HID_PID
int hid_pidff_init(struct hid_device *hid);
#else
static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
#endif
#else #else
static inline int hid_ff_init(struct hid_device *hid) { return -1; } static inline int hid_ff_init(struct hid_device *hid) { return -1; }
#endif #endif
static inline void hid_ff_exit(struct hid_device *hid) static inline void hid_ff_exit(struct hid_device *hid)
{ {
if (hid->ff_exit) if (hid->ff_exit)
hid->ff_exit(hid); hid->ff_exit(hid);
} }
static inline int hid_ff_event(struct hid_device *hid, struct input_dev *input, static inline int hid_ff_event(struct hid_device *hid, struct input_dev *input,
unsigned int type, unsigned int code, int value) unsigned int type, unsigned int code, int value)
{ {
...@@ -543,7 +554,3 @@ static inline int hid_ff_event(struct hid_device *hid, struct input_dev *input, ...@@ -543,7 +554,3 @@ static inline int hid_ff_event(struct hid_device *hid, struct input_dev *input,
return -ENOSYS; return -ENOSYS;
} }
int hid_lgff_init(struct hid_device* hid);
int hid_tmff_init(struct hid_device* hid);
int hid_pid_init(struct hid_device* hid);
drivers/usb/input/pid.c 已删除 100644 → 0
浏览文件 @ f6a01c85
/*
* PID Force feedback support for hid devices.
*
* Copyright (c) 2002 Rodrigo Damazio.
* Portions by Johann Deneux and Bjorn Augustson
*/
/*
* 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
*
* Should you need to contact me, the author, you can do so by
* e-mail - mail your message to <rdamazio@lsi.usp.br>
*/
#include <linux/config.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mm.h>
#include <linux/smp_lock.h>
#include <linux/spinlock.h>
#include <linux/input.h>
#include <linux/usb.h>
#include "hid.h"
#include "pid.h"
#define CHECK_OWNERSHIP(i, hid_pid) \
((i) < FF_EFFECTS_MAX && i >= 0 && \
test_bit(FF_PID_FLAGS_USED, &hid_pid->effects[(i)].flags) && \
(current->pid == 0 || \
(hid_pid)->effects[(i)].owner == current->pid))
/* Called when a transfer is completed */
static void hid_pid_ctrl_out(struct urb *u, struct pt_regs *regs)
{
dev_dbg(&u->dev->dev, "hid_pid_ctrl_out - Transfer Completed\n");
}
static void hid_pid_exit(struct hid_device *hid)
{
struct hid_ff_pid *private = hid->ff_private;
if (private->urbffout) {
usb_kill_urb(private->urbffout);
usb_free_urb(private->urbffout);
}
}
static int pid_upload_periodic(struct hid_ff_pid *pid, struct ff_effect *effect, int is_update)
{
dev_info(&pid->hid->dev->dev, "requested periodic force upload\n");
return 0;
}
static int pid_upload_constant(struct hid_ff_pid *pid, struct ff_effect *effect, int is_update)
{
dev_info(&pid->hid->dev->dev, "requested constant force upload\n");
return 0;
}
static int pid_upload_condition(struct hid_ff_pid *pid, struct ff_effect *effect, int is_update)
{
dev_info(&pid->hid->dev->dev, "requested Condition force upload\n");
return 0;
}
static int pid_upload_ramp(struct hid_ff_pid *pid, struct ff_effect *effect, int is_update)
{
dev_info(&pid->hid->dev->dev, "request ramp force upload\n");
return 0;
}
static int hid_pid_event(struct hid_device *hid, struct input_dev *input,
unsigned int type, unsigned int code, int value)
{
dev_dbg(&hid->dev->dev, "PID event received: type=%d,code=%d,value=%d.\n", type, code, value);
if (type != EV_FF)
return -1;
return 0;
}
/* Lock must be held by caller */
static void hid_pid_ctrl_playback(struct hid_device *hid, struct hid_pid_effect *effect, int play)
{
if (play)
set_bit(FF_PID_FLAGS_PLAYING, &effect->flags);
else
clear_bit(FF_PID_FLAGS_PLAYING, &effect->flags);
}
static int hid_pid_erase(struct input_dev *dev, int id)
{
struct hid_device *hid = dev->private;
struct hid_ff_pid *pid = hid->ff_private;
struct hid_field *field;
unsigned long flags;
int ret;
if (!CHECK_OWNERSHIP(id, pid))
return -EACCES;
/* Find report */
field = hid_find_field_by_usage(hid, HID_UP_PID | FF_PID_USAGE_BLOCK_FREE,
HID_OUTPUT_REPORT);
if (!field) {
dev_err(&hid->dev->dev, "couldn't find report\n");
return -EIO;
}
ret = hid_set_field(field, 0, pid->effects[id].device_id);
if (ret) {
dev_err(&hid->dev->dev, "couldn't set field\n");
return ret;
}
hid_submit_report(hid, field->report, USB_DIR_OUT);
spin_lock_irqsave(&pid->lock, flags);
hid_pid_ctrl_playback(hid, pid->effects + id, 0);
pid->effects[id].flags = 0;
spin_unlock_irqrestore(&pid->lock, flags);
return 0;
}
/* Erase all effects this process owns */
static int hid_pid_flush(struct input_dev *dev, struct file *file)
{
struct hid_device *hid = dev->private;
struct hid_ff_pid *pid = hid->ff_private;
int i;
/*NOTE: no need to lock here. The only times EFFECT_USED is
modified is when effects are uploaded or when an effect is
erased. But a process cannot close its dev/input/eventX fd
and perform ioctls on the same fd all at the same time */
/*FIXME: multiple threads, anyone? */
for (i = 0; i < dev->ff_effects_max; ++i)
if (current->pid == pid->effects[i].owner
&& test_bit(FF_PID_FLAGS_USED, &pid->effects[i].flags))
if (hid_pid_erase(dev, i))
dev_warn(&hid->dev->dev, "erase effect %d failed", i);
return 0;
}
static int hid_pid_upload_effect(struct input_dev *dev,
struct ff_effect *effect)
{
struct hid_ff_pid *pid_private = (struct hid_ff_pid *)(dev->private);
int ret;
int is_update;
unsigned long flags;
dev_dbg(&pid_private->hid->dev->dev, "upload effect called: effect_type=%x\n", effect->type);
/* Check this effect type is supported by this device */
if (!test_bit(effect->type, dev->ffbit)) {
dev_dbg(&pid_private->hid->dev->dev,
"invalid kind of effect requested.\n");
return -EINVAL;
}
/*
* If we want to create a new effect, get a free id
*/
if (effect->id == -1) {
int id = 0;
// Spinlock so we don`t get a race condition when choosing IDs
spin_lock_irqsave(&pid_private->lock, flags);
while (id < FF_EFFECTS_MAX)
if (!test_and_set_bit(FF_PID_FLAGS_USED, &pid_private->effects[id++].flags))
break;
if (id == FF_EFFECTS_MAX) {
spin_unlock_irqrestore(&pid_private->lock, flags);
// TEMP - We need to get ff_effects_max correctly first: || id >= dev->ff_effects_max) {
dev_dbg(&pid_private->hid->dev->dev, "Not enough device memory\n");
return -ENOMEM;
}
effect->id = id;
dev_dbg(&pid_private->hid->dev->dev, "effect ID is %d.\n", id);
pid_private->effects[id].owner = current->pid;
pid_private->effects[id].flags = (1 << FF_PID_FLAGS_USED);
spin_unlock_irqrestore(&pid_private->lock, flags);
is_update = FF_PID_FALSE;
} else {
/* We want to update an effect */
if (!CHECK_OWNERSHIP(effect->id, pid_private))
return -EACCES;
/* Parameter type cannot be updated */
if (effect->type != pid_private->effects[effect->id].effect.type)
return -EINVAL;
/* Check the effect is not already being updated */
if (test_bit(FF_PID_FLAGS_UPDATING, &pid_private->effects[effect->id].flags))
return -EAGAIN;
is_update = FF_PID_TRUE;
}
/*
* Upload the effect
*/
switch (effect->type) {
case FF_PERIODIC:
ret = pid_upload_periodic(pid_private, effect, is_update);
break;
case FF_CONSTANT:
ret = pid_upload_constant(pid_private, effect, is_update);
break;
case FF_SPRING:
case FF_FRICTION:
case FF_DAMPER:
case FF_INERTIA:
ret = pid_upload_condition(pid_private, effect, is_update);
break;
case FF_RAMP:
ret = pid_upload_ramp(pid_private, effect, is_update);
break;
default:
dev_dbg(&pid_private->hid->dev->dev,
"invalid type of effect requested - %x.\n",
effect->type);
return -EINVAL;
}
/* If a packet was sent, forbid new updates until we are notified
* that the packet was updated
*/
if (ret == 0)
set_bit(FF_PID_FLAGS_UPDATING, &pid_private->effects[effect->id].flags);
pid_private->effects[effect->id].effect = *effect;
return ret;
}
int hid_pid_init(struct hid_device *hid)
{
struct hid_ff_pid *private;
struct hid_input *hidinput = list_entry(hid->inputs.next, struct hid_input, list);
struct input_dev *input_dev = hidinput->input;
private = hid->ff_private = kzalloc(sizeof(struct hid_ff_pid), GFP_KERNEL);
if (!private)
return -ENOMEM;
private->hid = hid;
hid->ff_exit = hid_pid_exit;
hid->ff_event = hid_pid_event;
/* Open output URB */
if (!(private->urbffout = usb_alloc_urb(0, GFP_KERNEL))) {
kfree(private);
return -1;
}
usb_fill_control_urb(private->urbffout, hid->dev, 0,
(void *)&private->ffcr, private->ctrl_buffer, 8,
hid_pid_ctrl_out, hid);
input_dev->upload_effect = hid_pid_upload_effect;
input_dev->flush = hid_pid_flush;
input_dev->ff_effects_max = 8; // A random default
set_bit(EV_FF, input_dev->evbit);
set_bit(EV_FF_STATUS, input_dev->evbit);
spin_lock_init(&private->lock);
printk(KERN_INFO "Force feedback driver for PID devices by Rodrigo Damazio <rdamazio@lsi.usp.br>.\n");
return 0;
}
drivers/usb/input/pid.h 已删除 100644 → 0
浏览文件 @ f6a01c85
/*
* PID Force feedback support for hid devices.
*
* Copyright (c) 2002 Rodrigo Damazio.
*/
/*
* 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
*
* Should you need to contact me, the author, you can do so by
* e-mail - mail your message to <rdamazio@lsi.usp.br>
*/
#define FF_EFFECTS_MAX 64
#define FF_PID_FLAGS_USED 1 /* If the effect exists */
#define FF_PID_FLAGS_UPDATING 2 /* If the effect is being updated */
#define FF_PID_FLAGS_PLAYING 3 /* If the effect is currently being played */
#define FF_PID_FALSE 0
#define FF_PID_TRUE 1
struct hid_pid_effect {
unsigned long flags;
pid_t owner;
unsigned int device_id; /* The device-assigned ID */
struct ff_effect effect;
};
struct hid_ff_pid {
struct hid_device *hid;
unsigned long gain;
struct urb *urbffout;
struct usb_ctrlrequest ffcr;
spinlock_t lock;
unsigned char ctrl_buffer[8];
struct hid_pid_effect effects[FF_EFFECTS_MAX];
};
/*
* Constants from the PID usage table (still far from complete)
*/
#define FF_PID_USAGE_BLOCK_LOAD 0x89UL
#define FF_PID_USAGE_BLOCK_FREE 0x90UL
#define FF_PID_USAGE_NEW_EFFECT 0xABUL
#define FF_PID_USAGE_POOL_REPORT 0x7FUL
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