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path: root/drivers/usb/input/hid-pidff.c
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Diffstat (limited to 'drivers/usb/input/hid-pidff.c')
-rw-r--r--drivers/usb/input/hid-pidff.c1331
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 f5a90e950e6b..000000000000
--- 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;
-}