diff options
Diffstat (limited to 'drivers/usb/input/hid-pidff.c')
| -rw-r--r-- | drivers/usb/input/hid-pidff.c | 1331 |
1 files changed, 0 insertions, 1331 deletions
diff --git a/drivers/usb/input/hid-pidff.c b/drivers/usb/input/hid-pidff.c deleted file mode 100644 index f5a90e9..0000000 --- a/drivers/usb/input/hid-pidff.c +++ /dev/null @@ -1,1331 +0,0 @@ -/* - * 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/input.h> -#include <linux/usb.h> - -#include <linux/hid.h> - -#include "usbhid.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]); - - usbhid_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); - - usbhid_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; - - usbhid_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; - - usbhid_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); - usbhid_wait_io(pidff->hid); - usbhid_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); - usbhid_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; - usbhid_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; - usbhid_wait_io(pidff->hid); - - for (j = 0; j < 60; j++) { - debug("pid_block_load requested"); - usbhid_submit_report(pidff->hid, pidff->reports[PID_BLOCK_LOAD], - USB_DIR_IN); - usbhid_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; - } - - usbhid_wait_io(pidff->hid); - usbhid_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; - usbhid_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); - usbhid_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; - - usbhid_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 */ - usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); - usbhid_wait_io(hid); - usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); - usbhid_wait_io(hid); - - pidff->device_control->value[0] = - pidff->control_id[PID_ENABLE_ACTUATORS]; - usbhid_submit_report(hid, pidff->reports[PID_DEVICE_CONTROL], USB_DIR_OUT); - usbhid_wait_io(hid); - - /* pool report is sometimes messed up, refetch it */ - usbhid_submit_report(hid, pidff->reports[PID_POOL], USB_DIR_IN); - usbhid_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"); - usbhid_submit_report(hid, pidff->reports[PID_POOL], - USB_DIR_IN); - usbhid_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); - usbhid_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; -} |
