src: initial refactoring

1 files changed, 0 insertions, 1714 deletions

diff --git a/hid-tmt300rs.c b/hid-tmt300rs.c
deleted file mode 100644
index 4499687..0000000
--- a/hid-tmt300rs.c
+++ /dev/null
@@ -1,1714 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-#include <linux/usb.h>
-#include <linux/hid.h>
-#include "hid-tmff2.h"
-
-#define T300RS_MAX_EFFECTS 16
-#define T300RS_NORM_BUFFER_LENGTH 63
-#define T300RS_PS4_BUFFER_LENGTH 31
-
-#define T300RS_DEFAULT_ATTACHMENT 0x06
-#define T300RS_F1_ATTACHMENT 0x03
-
-static const unsigned long t300rs_params =
-	PARAM_SPRING_LEVEL
-	| PARAM_DAMPER_LEVEL
-	| PARAM_FRICTION_LEVEL
-	| PARAM_GAIN
-	| PARAM_RANGE
-	| PARAM_ALT_MODE
-	;
-
-static const signed short t300rs_effects[] = {
-	FF_CONSTANT,
-	FF_RAMP,
-	FF_SPRING,
-	FF_DAMPER,
-	FF_FRICTION,
-	FF_INERTIA,
-	FF_PERIODIC,
-	FF_SINE,
-	FF_TRIANGLE,
-	FF_SQUARE,
-	FF_SAW_UP,
-	FF_SAW_DOWN,
-	FF_AUTOCENTER,
-	FF_GAIN,
-	-1
-};
-
-struct __packed t300rs_fw_response {
-	uint8_t unused1[2];
-	uint8_t fw_version;
-	uint8_t unused2;
-};
-
-
-struct __packed t300rs_packet_header {
-	uint8_t zero1;
-	uint8_t id;
-	uint8_t code;
-};
-
-struct __packed t300rs_setup_header {
-	uint8_t cmd;
-	uint8_t code;
-};
-
-struct __packed t300rs_packet_envelope {
-	uint16_t attack_length;
-	uint16_t attack_level;
-	uint16_t fade_length;
-	uint16_t fade_level;
-};
-
-struct __packed t300rs_packet_timing {
-	uint8_t start_marker;
-	uint16_t duration;
-	uint8_t zero1[2];
-	uint16_t offset;
-	uint8_t zero2;
-	uint16_t end_marker;
-};
-
-struct usb_ctrlrequest t300rs_fw_request = {
-	.bRequestType = 0xc1,
-	.bRequest = 86,
-	.wValue = 0,
-	.wIndex = 0,
-	.wLength = 8
-};
-
-struct t300rs_data {
-	unsigned long quirks;
-	void *device_props;
-};
-
-static u8 t300rs_rdesc_nrm_fixed[] = {
-	0x05, 0x01, /* Usage page (Generic Desktop) */
-	0x09, 0x04, /* Usage (Joystick) */
-	0xa1, 0x01, /* Collection (Application) */
-	0x09, 0x01, /* Usage (Pointer) */
-	0xa1, 0x00, /* Collection (Physical) */
-	0x85, 0x07, /* Report ID (7) */
-	0x09, 0x30, /* Usage (X) */
-	0x15, 0x00, /* Logical minimum (0) */
-	0x27, 0xff, 0xff, 0x00, 0x00, /* Logical maximum (65535) */
-	0x35, 0x00, /* Physical minimum (0) */
-	0x47, 0xff, 0xff, 0x00, 0x00, /* Physical maximum (65535) */
-	0x75, 0x10, /* Report size (16) */
-	0x95, 0x01, /* Report count (1) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x35, /* Usage (Rz) (Brake) */
-	0x26, 0xff, 0x03, /* Logical maximum (1023) */
-	0x46, 0xff, 0x03, /* Physical maximum (1023) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x32, /* Usage (Z) (Gas) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x31, /* Usage (Y) (Clutch) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x81, 0x03, /* Input (Variable, Absolute, Constant) */
-	0x05, 0x09, /* Usage page (Button) */
-	0x19, 0x01, /* Usage minimum (1) */
-	0x29, 0x0d, /* Usage maximum (13) */
-	0x25, 0x01, /* Logical maximum (1) */
-	0x45, 0x01, /* Physical maximum (1) */
-	0x75, 0x01, /* Report size (1) */
-	0x95, 0x0d, /* Report count (13) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x75, 0x0b, /* Report size (13) */
-	0x95, 0x01, /* Report count (1) */
-	0x81, 0x03, /* Usage (Variable, Absolute, Constant) */
-	0x05, 0x01, /* Usage page (Generic Desktop) */
-	0x09, 0x39, /* Usage (Hat Switch) */
-	0x25, 0x07, /* Logical maximum (7) */
-	0x46, 0x3b, 0x01, /* Physical maximum (315) */
-	0x55, 0x00, /* Unit exponent (0) */
-	0x65, 0x14, /* Unit (Eng Rot, Angular Pos) */
-	0x75, 0x04, /* Report size (4) */
-	0x81, 0x42, /* Input (Variable, Absolute, NullState) */
-	0x65, 0x00, /* Unit (None) */
-	0x81, 0x03, /* Input (Variable, Absolute, Constant) */
-	0x85, 0x60, /* Report ID (96), prev 10 */
-	0x06, 0x00, 0xff, /* Usage page (Vendor 1) */
-	0x09, 0x60, /* Usage (96), prev 10 */
-	0x75, 0x08, /* Report size (8) */
-	0x95, 0x3f, /* Report count (63) */
-	0x26, 0xff, 0x7f, /* Logical maximum (32767) */
-	0x15, 0x00, /* Logical minimum (0) */
-	0x46, 0xff, 0x7f, /* Physical maximum (32767) */
-	0x36, 0x00, 0x80, /* Physical minimum (-32768) */
-	0x91, 0x02, /* Output (Variable, Absolute) */
-	0x85, 0x02, /* Report ID (2) */
-	0x09, 0x02, /* Usage (2) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x14, /* Usage (20) */
-	0x85, 0x14, /* Report ID (20) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0xc0, /* End collection */
-	0xc0, /* End collection */
-};
-
-static u8 t300rs_rdesc_adv_fixed[] = {
-	0x05, 0x01, /* Usage page (Generic Desktop) */
-	0x09, 0x04, /* Usage (Joystick) */
-	0xa1, 0x01, /* Collection (Application) */
-	0x09, 0x01, /* Usage (Pointer) */
-	0xa1, 0x00, /* Collection (Physical) */
-	0x85, 0x07, /* Report ID (7) */
-	0x09, 0x30, /* Usage (X) */
-	0x15, 0x00, /* Logical minimum (0) */
-	0x27, 0xff, 0xff, 0x00, 0x00, /* Logical maximum (65535) */
-	0x35, 0x00, /* Physical minimum (0) */
-	0x47, 0xff, 0xff, 0x00, 0x00, /* Physical maximum (65535) */
-	0x75, 0x10, /* Report size (16) */
-	0x95, 0x01, /* Report count (1) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x31, /* Usage (Y) */
-	0x26, 0xff, 0x03, /* Logical maximum (1023) */
-	0x46, 0xff, 0x03, /* Physical maximum (1023) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x35, /* Usage (Rz) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x36, /* Usage (Slider) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x81, 0x03, /* Input (Variable, Absolute, Constant) ? */
-	0x05, 0x09, /* Usage page (Button) */
-	0x19, 0x01, /* Usage minimum (1) */
-	0x29, 0x19, /* Usage maximum (25) */
-	0x25, 0x01, /* Logical maximum (1) */
-	0x45, 0x01, /* Physical maximum (1) */
-	0x75, 0x01, /* Report size (1) */
-	0x95, 0x19, /* Report count (25) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x75, 0x03, /* Report size (3) */
-	0x95, 0x01, /* Report count (1) */
-	0x81, 0x03, /* Input (Variable, Absolute, Constant) */
-	0x05, 0x01, /* Usage page (Generic Desktop) */
-	0x09, 0x39, /* Usage (Hat Switch) */
-	0x25, 0x07, /* Logical maximum (7) */
-	0x46, 0x3b, 0x01, /* Physical maximum (315) */
-	0x55, 0x00, /* Unit exponent (0) */
-	0x65, 0x14, /* Unit (Eng Rot, Angular Pos) */
-	0x75, 0x04, /* Report size (4) */
-	0x81, 0x42, /* Input (Variable, Absolute, NullState) */
-	0x65, 0x00, /* Unit (None) */
-	0x85, 0x60, /* Report ID (96), prev 10 */
-	0x06, 0x00, 0xff, /* Usage page (Vendor 1) */
-	0x09, 0x60, /* Usage (96), prev 10 (why?) */
-	0x75, 0x08, /* Report size (8) */
-	0x95, 0x3f, /* Report count (63) */
-	0x26, 0xff, 0x00, /* Logical maximum (255) */
-	0x46, 0xff, 0x00, /* Physical maximum (255) */
-	0x91, 0x02, /* Output (Variable, Absolute) */
-	0x85, 0x02, /* Report ID (2) */
-	0x09, 0x02, /* Usage (Mouse) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x14, /* Usage (20) */
-	0x85, 0x14, /* Report ID (20) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0xc0, /* End collection */
-	0xc0, /* End collection */
-};
-
-static u8 t300rs_rdesc_ps4_fixed[] = {
-	0x05, 0x01, /* Usage page (Generic Desktop) */
-	0x09, 0x05, /* Usage (GamePad) */
-	0xa1, 0x01, /* Collection (Application) */
-	0x85, 0x01, /* Report ID (1) */
-	0x09, 0x00, /* Usage (U) (was X) */
-	0x09, 0x00, /* Usage (U) (was Y) */
-	0x09, 0x00, /* Usage (U) (was Z) */
-	0x09, 0x00, /* Usage (U) (was Rz)*/
-	0x15, 0x00, /* Logical minimum (0) */
-	0x26, 0xff, 0x00, /* Logical maximum (255) */
-	0x75, 0x08, /* Report size (8) */
-	0x95, 0x04, /* Report count (4) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x09, 0x39, /* Usage (Hat Switch) */
-	0x15, 0x00, /* Logical minimum (0) */
-	0x25, 0x07, /* Logical maximum (7)*/
-	0x35, 0x00, /* Physical minimum (0) */
-	0x46, 0x3b, 0x01, /* Physical maximum (315) */
-	0x65, 0x14, /* Unit (Eng Rot, Angular Pos) */
-	0x75, 0x04, /* Report size (4) */
-	0x95, 0x01, /* Report count (1) */
-	0x81, 0x42, /* Input (Variable, Absolute, NullState) */
-	0x65, 0x00, /* Input (None) */
-	0x05, 0x09, /* Usage page (Button) */
-	0x19, 0x01, /* Usage minimum (1) */
-	0x29, 0x0e, /* Usage maximum (14) */
-	0x15, 0x00, /* Logical minimum (0) */
-	0x25, 0x01, /* Logical maximum (1) */
-	0x75, 0x01, /* Report size (1) */
-	0x95, 0x0e, /* Report size (14) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x06, 0x00, 0xff, /* Usage page (Vendor 1) */
-	0x09, 0x20, /* Usage (32) */
-	0x75, 0x06, /* Report size (6) */
-	0x95, 0x01, /* Report count (1) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x05, 0x01, /* Usage page (Generic Desktop) */
-	0x09, 0x00, /* Usage (U) (was Rx)*/
-	0x09, 0x00, /* Usage (U) (was Ry) */
-	0x15, 0x00, /* Logical minimum (0) */
-	0x26, 0xff, 0x00, /* Logical maximum (255) */
-	0x75, 0x08, /* Report size (8) */
-	0x95, 0x02, /* Report count (2) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	0x05, 0x01, /* Usage page (Vendor 1) */
-	/* constant zero? */
-	0x09, 0x00, /* Usage (33) */
-	0x95, 0x21, /* Report count (33) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	/* wheel */
-	0x09, 0x30, /* Usage (X) */
-	0x15, 0x00, /* Logical minimum (0) */
-	0x27, 0xff, 0xff, 0x00, 0x00, /* Logical maximum (65535) */
-	0x35, 0x00, /* Physical minimum (0) */
-	0x47, 0xff, 0xff, 0x00, 0x00, /* Physical maximum (65535) */
-	0x75, 0x10, /* Report size (16) */
-	0x95, 0x01, /* Report count (1) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	/* gas */
-	0x09, 0x31, /* Usage (Y) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	/* brake */
-	0x09, 0x32, /* Usage (Z) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	/* clutch */
-	0x09, 0x35, /* Usage (Rz) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	/* stick shifter (check model no) */
-	0x05, 0x09, /* Usage page (Button) */
-	0x19, 0x0f, /* Usage minimum (15) */
-	0x29, 0x17, /* Usage maximum (23) */
-	0x15, 0x00, /* Logical minimum (1) */
-	0x25, 0x01, /* Logical maximum (1) */
-	0x75, 0x01, /* Report size (1) */
-	0x95, 0x08, /* Report count (8) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	/* no clue */
-	0x05, 0x01, /* Usage page (Generic Desktop) */
-	0x09, 0x00, /* Usage (U) */
-	0x75, 0x08, /* Report size (8) */
-	0x95, 0x0c, /* Report count (12) */
-	0x81, 0x02, /* Input (Variable, Absolute) */
-	/* continue unmodified */
-	0x06, 0x00, 0xff, /* Usage page (Vendor defined 1) */
-	0x85, 0x60, /* Report ID (5) (change to 0x60?) */
-	0x09, 0x60, /* Usage (34) (change to 0x60?) */
-	0x95, 0x1f, /* Report count (31) () */
-	0x91, 0x02, /* Output (Variable, Absolute) */
-	0x85, 0x03, /* Report ID (3) */
-	0x0a, 0x21, 0x27, /* ??? */
-	0x95, 0x2f, /* Report count (47) */
-	0xb1, 0x02, /* Feature (Data, Var, Abs) */
-	0xc0, /* End collection */
-
-	/* From here on out no clue */
-	0x06, 0xf0,
-	0xff, 0x09,
-	0x40, 0xa1,
-	0x01, 0x85,
-	0xf0, 0x09,
-	0x47, 0x95,
-	0x3f, 0xb1,
-	0x02, 0x85,
-	0xf1, 0x09,
-	0x48, 0x95,
-	0x3f, 0xb1,
-	0x02, 0x85,
-	0xf2, 0x09,
-	0x49, 0x95,
-	0x0f, 0xb1,
-	0x02, 0x85,
-	0xf3, 0x0a,
-	0x01, 0x47,
-	0x95, 0x07,
-	0xb1, 0x02,
-	0xc0,
-};
-
-static u8 spring_values[] = {
-	0xa6, 0x6a, 0xa6, 0x6a, 0xfe,
-	0xff, 0xfe, 0xff, 0xfe, 0xff,
-	0xfe, 0xff, 0xdf, 0x58, 0xa6,
-	0x6a, 0x06
-};
-
-static u8 damper_values[] = {
-	0xfc, 0x7f, 0xfc, 0x7f, 0xfe,
-	0xff, 0xfe, 0xff, 0xfe, 0xff,
-	0xfe, 0xff, 0xfc, 0x7f, 0xfc,
-	0x7f, 0x07
-};
-
-int t300rs_send_buf(struct t300rs_device_entry *t300rs, u8 *send_buffer, size_t len)
-{
-	int i;
-	/* check that send_buffer fits into our report */
-	if (len > t300rs->buffer_length)
-		return -EINVAL;
-
-	/* fill with actual data */
-	for (i = 0; i < len; ++i)
-		t300rs->ff_field->value[i] = send_buffer[i];
-
-	/* fill the rest with zeroes */
-	for (i = len; i < t300rs->buffer_length; ++i)
-		t300rs->ff_field->value[i] = 0;
-
-	hid_hw_request(t300rs->hdev, t300rs->report, HID_REQ_SET_REPORT);
-	return 0;
-}
-
-int t300rs_send_int(struct t300rs_device_entry *t300rs)
-{
-	t300rs_send_buf(t300rs, t300rs->send_buffer, t300rs->buffer_length);
-	memset(t300rs->send_buffer, 0, t300rs->buffer_length);
-
-	return 0;
-}
-
-static void t300rs_fill_header(struct t300rs_packet_header *packet_header,
-		uint8_t id, uint8_t code)
-{
-	packet_header->id = id + 1;
-	packet_header->code = code;
-}
-
-int t300rs_play_effect(void *data, struct tmff2_effect_state *state)
-{
-	struct t300rs_device_entry *t300rs = data;
-	struct __packed t300rs_packet_play {
-		struct t300rs_packet_header header;
-		uint8_t value;
-	} *play_packet = (struct t300rs_packet_play *)t300rs->send_buffer;
-
-	int ret;
-
-
-	t300rs_fill_header(&play_packet->header, state->effect.id, 0x89);
-	play_packet->value = 0x01;
-
-	ret = t300rs_send_int(t300rs);
-	if (ret)
-		hid_err(t300rs->hdev, "failed starting effect play\n");
-
-	return ret;
-}
-
-int t300rs_stop_effect(void *data, struct tmff2_effect_state *state)
-{
-	struct t300rs_device_entry *t300rs = data;
-	struct __packed t300rs_packet_stop {
-		struct t300rs_packet_header header;
-		uint8_t value;
-	} *stop_packet = (struct t300rs_packet_stop *)t300rs->send_buffer;
-
-	int ret;
-
-
-	t300rs_fill_header(&stop_packet->header, state->effect.id, 0x89);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret)
-		hid_err(t300rs->hdev, "failed stopping effect play\n");
-
-	return ret;
-}
-
-static void t300rs_fill_envelope(struct t300rs_packet_envelope *packet_envelope,
-		int16_t level, uint16_t duration, struct ff_envelope *envelope)
-{
-	uint16_t attack_length = (duration * envelope->attack_length) / 0x7fff;
-	uint16_t attack_level = (level * envelope->attack_level) / 0x7fff;
-	uint16_t fade_length = (duration * envelope->fade_length) / 0x7fff;
-	uint16_t fade_level = (level * envelope->fade_level) / 0x7fff;
-
-	packet_envelope->attack_length = cpu_to_le16(attack_length);
-	packet_envelope->attack_level = cpu_to_le16(attack_level);
-	packet_envelope->fade_length = cpu_to_le16(fade_length);
-	packet_envelope->fade_level = cpu_to_le16(fade_level);
-}
-
-static void t300rs_fill_timing(struct t300rs_packet_timing *packet_timing,
-		uint16_t duration, uint16_t offset){
-	packet_timing->start_marker = 0x4f;
-
-	packet_timing->duration = cpu_to_le16(duration);
-	packet_timing->offset = cpu_to_le16(offset);
-
-	packet_timing->end_marker = 0xffff;
-}
-
-static int t300rs_update_envelope(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state,
-		int16_t level,
-		uint16_t duration,
-		uint8_t id,
-		struct ff_envelope envelope,
-		struct ff_envelope envelope_old
-		)
-{
-	struct __packed t300rs_packet_mod_envelope {
-		struct t300rs_packet_header header;
-		uint8_t attribute;
-		uint16_t value;
-	} *packet_mod_envelope = (struct t300rs_packet_mod_envelope *)t300rs->send_buffer;
-
-	uint16_t attack_length, attack_level, fade_length, fade_level;
-	int ret = 0;
-
-	duration = duration - 1;
-
-	attack_length = (duration * envelope.attack_length) / 0x7fff;
-	attack_level = (level * envelope.attack_level) / 0x7fff;
-	fade_length = (duration * envelope.fade_length) / 0x7fff;
-	fade_level = (level * envelope.fade_level) / 0x7fff;
-
-	if (envelope.attack_length != envelope_old.attack_length) {
-		t300rs_fill_header(&packet_mod_envelope->header, id, 0x31);
-		packet_mod_envelope->attribute = 0x81;
-		packet_mod_envelope->value = cpu_to_le16(attack_length);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying effect envelope\n");
-			goto error;
-		}
-	}
-
-	if (envelope.attack_level != envelope_old.attack_level) {
-		t300rs_fill_header(&packet_mod_envelope->header, id, 0x31);
-		packet_mod_envelope->attribute = 0x82;
-		packet_mod_envelope->value = cpu_to_le16(attack_level);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying effect envelope\n");
-			goto error;
-		}
-	}
-
-	if (envelope.fade_length != envelope_old.fade_length) {
-		t300rs_fill_header(&packet_mod_envelope->header, id, 0x31);
-		packet_mod_envelope->attribute = 0x84;
-		packet_mod_envelope->value = cpu_to_le16(fade_length);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying effect envelope\n");
-			goto error;
-		}
-	}
-
-	if (envelope.fade_level != envelope_old.fade_level) {
-		t300rs_fill_header(&packet_mod_envelope->header, id, 0x31);
-		packet_mod_envelope->attribute = 0x88;
-		packet_mod_envelope->value = cpu_to_le16(fade_level);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying effect envelope\n");
-			goto error;
-		}
-	}
-
-error:
-	return ret;
-}
-
-static int t300rs_update_simple_duration(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state, unsigned type)
-{
-	struct ff_effect effect = state->effect;
-	struct __packed t300rs_packet_mod_duration {
-		struct t300rs_packet_header header;
-		uint16_t marker;
-		uint16_t duration;
-	} *packet_mod_duration = (struct t300rs_packet_mod_duration *)t300rs->send_buffer;
-
-	uint16_t duration;
-	int ret = 0;
-
-	duration = effect.replay.length - 1;
-
-	t300rs_fill_header(&packet_mod_duration->header, effect.id, 0x49);
-	packet_mod_duration->marker = cpu_to_le16(0x4100 + type);
-	packet_mod_duration->duration = cpu_to_le16(duration);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying duration\n");
-		goto error;
-	}
-
-error:
-	return ret;
-}
-
-static int t300rs_update_periodic_duration(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state, unsigned type)
-{
-	struct ff_effect effect = state->effect;
-	struct __packed t300rs_packet_mod_duration {
-		struct t300rs_packet_header header;
-		uint8_t type;
-		uint8_t marker;
-		uint16_t duration;
-	} *packet_mod_duration = (struct t300rs_packet_mod_duration *)t300rs->send_buffer;
-
-	uint16_t duration;
-	int ret = 0;
-
-	duration = effect.replay.length - 1;
-
-	t300rs_fill_header(&packet_mod_duration->header, effect.id, 0x49);
-	packet_mod_duration->type = type;
-	packet_mod_duration->marker = 0x41;
-	packet_mod_duration->duration = cpu_to_le16(duration);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying duration\n");
-		goto error;
-	}
-
-error:
-	return ret;
-}
-
-static int t300rs_update_ramp_duration(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	struct __packed t300rs_packet_mod_duration {
-		struct t300rs_packet_header header;
-		uint8_t marker0;
-		uint16_t duration0;
-		uint8_t marker1;
-		uint8_t marker2;
-		uint16_t duration1;
-	} *packet_mod_duration = (struct t300rs_packet_mod_duration *)t300rs->send_buffer;
-
-	uint16_t duration;
-	int ret = 0;
-
-	duration = effect.replay.length - 1;
-
-	t300rs_fill_header(&packet_mod_duration->header, effect.id, 0x4e);
-	packet_mod_duration->marker0 = 0x08;
-	packet_mod_duration->duration0 = cpu_to_le16(duration);
-	packet_mod_duration->marker1 = 0x05;
-	packet_mod_duration->marker2 = 0x41;
-	packet_mod_duration->duration1 = cpu_to_le16(duration);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying duration\n");
-		goto error;
-	}
-
-error:
-	return ret;
-}
-
-static int t300rs_update_constant(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	struct ff_effect old = state->old;
-	struct ff_constant_effect constant = effect.u.constant;
-	struct ff_constant_effect constant_old = old.u.constant;
-	struct __packed t300rs_packet_mod_constant {
-		struct t300rs_packet_header header;
-		uint16_t level;
-	} *packet_mod_constant = (struct t300rs_packet_mod_constant *)t300rs->send_buffer;
-	int ret;
-	int16_t level;
-
-	level = (constant.level * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
-
-	if ((constant.level != constant_old.level) || (effect.direction != old.direction)) {
-
-		t300rs_fill_header(&packet_mod_constant->header, effect.id, 0x0a);
-		packet_mod_constant->level = cpu_to_le16(level);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying constant effect\n");
-			goto error;
-		}
-
-	}
-
-	ret = t300rs_update_envelope(t300rs,
-			state,
-			level,
-			effect.replay.length,
-			effect.id,
-			constant.envelope,
-			constant_old.envelope
-			);
-
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying constant envelope\n");
-		goto error;
-	}
-
-	ret = t300rs_update_simple_duration(t300rs, state, 0x00);
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying constant duration\n");
-		goto error;
-	}
-
-error:
-	return ret;
-}
-
-static int t300rs_update_ramp(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	struct ff_effect old = state->old;
-	struct ff_ramp_effect ramp = effect.u.ramp;
-	struct ff_ramp_effect ramp_old = old.u.ramp;
-	struct __packed t300rs_packet_mod_ramp {
-		struct t300rs_packet_header header;
-		uint8_t attribute;
-		uint16_t difference;
-		uint16_t level;
-	} *packet_mod_ramp = (struct t300rs_packet_mod_ramp *)t300rs->send_buffer;
-
-	int ret;
-
-	uint16_t difference, top, bottom;
-	int16_t level;
-
-	top = ramp.end_level > ramp.start_level ? ramp.end_level : ramp.start_level;
-	bottom = ramp.end_level > ramp.start_level ? ramp.start_level : ramp.end_level;
-
-
-	difference = ((top - bottom) * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
-
-
-	level = (top * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
-
-	if ((ramp.start_level != ramp_old.start_level)
-			|| (ramp.end_level != ramp_old.end_level)
-			|| (effect.direction != old.direction)) {
-
-		t300rs_fill_header(&packet_mod_ramp->header, effect.id, 0x0e);
-		packet_mod_ramp->attribute = 0x03;
-		packet_mod_ramp->difference = cpu_to_le16(difference);
-		packet_mod_ramp->level = cpu_to_le16(level);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying ramp effect\n");
-			goto error;
-		}
-
-	}
-
-	ret = t300rs_update_envelope(t300rs,
-			state,
-			level,
-			effect.replay.length,
-			effect.id,
-			ramp.envelope,
-			ramp_old.envelope
-			);
-
-
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying ramp envelope\n");
-		goto error;
-	}
-
-	ret = t300rs_update_ramp_duration(t300rs, state);
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying ramp duration\n");
-		goto error;
-	}
-
-error:
-	return ret;
-}
-
-static int t300rs_update_damper(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	struct ff_effect old = state->old;
-	struct ff_condition_effect damper = effect.u.condition[0];
-	struct ff_condition_effect damper_old = old.u.condition[0];
-	struct __packed t300rs_packet_mod_damper {
-		struct t300rs_packet_header header;
-		uint8_t attribute;
-		uint16_t value0;
-		uint16_t value1;
-	} *packet_mod_damper = (struct t300rs_packet_mod_damper *)t300rs->send_buffer;
-
-	int ret, input_level;
-
-	input_level = damper_level;
-	if (state->effect.type == FF_FRICTION)
-		input_level = friction_level;
-
-	if (state->effect.type == FF_SPRING)
-		input_level = spring_level;
-
-	if (damper.right_coeff != damper_old.right_coeff) {
-		int16_t coeff = damper.right_coeff * input_level / 100;
-
-		t300rs_fill_header(&packet_mod_damper->header, effect.id, 0x0e);
-		packet_mod_damper->attribute = 0x41;
-		packet_mod_damper->value0 = cpu_to_le16(coeff);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying damper rc\n");
-			goto error;
-		}
-
-	}
-
-	if (damper.left_coeff != damper_old.left_coeff) {
-		int16_t coeff = damper.left_coeff * input_level / 100;
-
-		t300rs_fill_header(&packet_mod_damper->header, effect.id, 0x0e);
-		packet_mod_damper->attribute = 0x42;
-		packet_mod_damper->value0 = cpu_to_le16(coeff);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying damper lc\n");
-			goto error;
-		}
-
-	}
-
-	if ((damper.deadband != damper_old.deadband)
-			|| (damper.center != damper_old.center)) {
-
-		uint16_t right_deadband = 0xfffe - damper.deadband - damper.center;
-		uint16_t left_deadband = 0xfffe - damper.deadband + damper.center;
-
-		t300rs_fill_header(&packet_mod_damper->header, effect.id, 0x0e);
-		packet_mod_damper->attribute = 0x4c;
-		packet_mod_damper->value0 = cpu_to_le16(right_deadband);
-		packet_mod_damper->value1 = cpu_to_le16(left_deadband);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying damper deadband\n");
-			goto error;
-		}
-
-	}
-
-	ret = t300rs_update_simple_duration(t300rs, state, 0x06);
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying damper duration\n");
-		goto error;
-	}
-
-error:
-	return ret;
-}
-
-static int t300rs_update_spring(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	return t300rs_update_damper(t300rs, state);
-}
-
-
-static int t300rs_update_periodic(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	struct ff_effect old = state->old;
-	struct ff_periodic_effect periodic = effect.u.periodic;
-	struct ff_periodic_effect periodic_old = old.u.periodic;
-	struct __packed t300rs_packet_mod_periodic {
-		struct t300rs_packet_header header;
-		uint8_t attribute;
-		uint16_t value;
-	} *packet_mod_periodic = (struct t300rs_packet_mod_periodic *)t300rs->send_buffer;
-
-	int ret;
-	int16_t magnitude, phase;
-
-	magnitude = (periodic.magnitude * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
-	phase = periodic.phase;
-
-	if ((periodic.magnitude != periodic_old.magnitude)
-			|| (effect.direction != old.direction)) {
-
-		t300rs_fill_header(&packet_mod_periodic->header, effect.id, 0x0e);
-		packet_mod_periodic->attribute = 0x01;
-		packet_mod_periodic->value = cpu_to_le16(magnitude);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying periodic magnitude\n");
-			goto error;
-		}
-
-	}
-
-	if (periodic.offset != periodic_old.offset) {
-		uint16_t offset = periodic.offset;
-
-		t300rs_fill_header(&packet_mod_periodic->header, effect.id, 0x0e);
-		packet_mod_periodic->attribute = 0x02;
-		packet_mod_periodic->value = cpu_to_le16(offset);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying periodic offset\n");
-			goto error;
-		}
-
-	}
-
-	if (periodic.phase != periodic_old.phase) {
-
-		t300rs_fill_header(&packet_mod_periodic->header, effect.id, 0x0e);
-		packet_mod_periodic->attribute = 0x04;
-		packet_mod_periodic->value = cpu_to_le16(phase);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying periodic phase\n");
-			goto error;
-		}
-
-	}
-
-	if (periodic.period != periodic_old.period) {
-		int16_t period = periodic.period;
-
-		t300rs_fill_header(&packet_mod_periodic->header, effect.id, 0x0e);
-		packet_mod_periodic->attribute = 0x08;
-		packet_mod_periodic->value = cpu_to_le16(period);
-
-		ret = t300rs_send_int(t300rs);
-		if (ret) {
-			hid_err(t300rs->hdev, "failed modifying periodic period\n");
-			goto error;
-		}
-
-	}
-
-	ret = t300rs_update_envelope(t300rs,
-			state,
-			magnitude,
-			effect.replay.length,
-			effect.id,
-			periodic.envelope,
-			periodic_old.envelope
-			);
-
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying periodic envelope\n");
-		goto error;
-	}
-
-	ret = t300rs_update_periodic_duration(t300rs, state, periodic.waveform - 0x57);
-	if (ret) {
-		hid_err(t300rs->hdev, "failed modifying periodic duration\n");
-		goto error;
-	}
-
-error:
-	return ret;
-}
-
-static int t300rs_upload_constant(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	struct ff_constant_effect constant = state->effect.u.constant;
-	struct __packed t300rs_packet_constant {
-		struct t300rs_packet_header header;
-		uint16_t level;
-		struct t300rs_packet_envelope envelope;
-		uint8_t zero;
-		struct t300rs_packet_timing timing;
-	} *packet_constant = (struct t300rs_packet_constant *)t300rs->send_buffer;
-
-	int16_t level;
-	uint16_t duration, offset;
-
-	int ret;
-
-	level = (constant.level * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
-	duration = effect.replay.length - 1;
-
-	offset = effect.replay.delay;
-
-	t300rs_fill_header(&packet_constant->header, effect.id, 0x6a);
-
-	packet_constant->level = cpu_to_le16(level);
-
-	t300rs_fill_envelope(&packet_constant->envelope, level, duration,
-			&constant.envelope);
-	t300rs_fill_timing(&packet_constant->timing, duration, offset);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret)
-		hid_err(t300rs->hdev, "failed uploading constant effect\n");
-
-	return ret;
-}
-
-static int t300rs_upload_ramp(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	struct ff_ramp_effect ramp = state->effect.u.ramp;
-	struct __packed t300rs_packet_ramp {
-		struct t300rs_packet_header header;
-		uint16_t difference;
-		uint16_t level;
-		uint8_t zero1[2];
-		uint16_t duration;
-		uint16_t marker;
-		struct t300rs_packet_envelope envelope;
-		uint8_t direction;
-		struct t300rs_packet_timing timing;
-	} *packet_ramp = (struct t300rs_packet_ramp *)t300rs->send_buffer;
-
-	int ret;
-	uint16_t difference, offset, top, bottom, duration;
-	int16_t level;
-
-	duration = effect.replay.length - 1;
-
-	top = ramp.end_level > ramp.start_level ? ramp.end_level : ramp.start_level;
-	bottom = ramp.end_level > ramp.start_level ? ramp.start_level : ramp.end_level;
-
-
-	difference = ((top - bottom) * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
-	level = (top * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
-	offset = effect.replay.delay;
-
-
-	t300rs_fill_header(&packet_ramp->header, effect.id, 0x6b);
-
-	packet_ramp->difference = cpu_to_le16(difference);
-	packet_ramp->level = cpu_to_le16(level);
-	packet_ramp->duration = cpu_to_le16(duration);
-
-	packet_ramp->marker = cpu_to_le16(0x8000);
-
-	t300rs_fill_envelope(&packet_ramp->envelope, level, duration,
-			&ramp.envelope);
-
-	packet_ramp->direction = ramp.end_level > ramp.start_level ? 0x04 : 0x05;
-	t300rs_fill_timing(&packet_ramp->timing, duration, offset);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret)
-		hid_err(t300rs->hdev, "failed uploading ramp");
-
-	return ret;
-}
-
-static int t300rs_upload_spring(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	/* we only care about the first axis */
-	struct ff_condition_effect spring = state->effect.u.condition[0];
-	struct __packed t300rs_packet_spring {
-		struct t300rs_packet_header header;
-		uint16_t right_coeff;
-		uint16_t left_coeff;
-		uint16_t right_deadband;
-		uint16_t left_deadband;
-		uint8_t spring_start[17];
-		struct t300rs_packet_timing timing;
-	} *packet_spring = (struct t300rs_packet_spring *)t300rs->send_buffer;
-
-	int ret;
-	uint16_t duration, right_coeff, left_coeff, right_deadband, left_deadband, offset;
-
-	duration = effect.replay.length - 1;
-
-	right_coeff = spring.right_coeff * spring_level / 100;
-	left_coeff = spring.left_coeff * spring_level / 100;
-
-	right_deadband = 0xfffe - spring.deadband - spring.center;
-	left_deadband = 0xfffe - spring.deadband + spring.center;
-
-	offset = effect.replay.delay;
-
-	t300rs_fill_header(&packet_spring->header, effect.id, 0x64);
-
-	packet_spring->right_coeff = cpu_to_le16(right_coeff);
-	packet_spring->left_coeff = cpu_to_le16(left_coeff);
-	packet_spring->right_deadband = cpu_to_le16(right_deadband);
-	packet_spring->left_deadband = cpu_to_le16(left_deadband);
-
-	memcpy(&packet_spring->spring_start, spring_values, ARRAY_SIZE(spring_values));
-	t300rs_fill_timing(&packet_spring->timing, duration, offset);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret)
-		hid_err(t300rs->hdev, "failed uploading spring\n");
-
-	return ret;
-}
-
-static int t300rs_upload_damper(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-
-	struct ff_effect effect = state->effect;
-	/* we only care about the first axis */
-	struct ff_condition_effect spring = state->effect.u.condition[0];
-	struct __packed t300rs_packet_damper {
-		struct t300rs_packet_header header;
-		uint16_t right_coeff;
-		uint16_t left_coeff;
-		uint16_t right_deadband;
-		uint16_t left_deadband;
-		uint8_t damper_start[17];
-		struct t300rs_packet_timing timing;
-	} *packet_damper = (struct t300rs_packet_damper *)t300rs->send_buffer;
-
-	int ret, input_level;
-	uint16_t duration, right_coeff, left_coeff, right_deadband, left_deadband, offset;
-
-	duration = effect.replay.length - 1;
-
-	input_level = damper_level;
-	if (state->effect.type == FF_FRICTION)
-		input_level = friction_level;
-
-	right_coeff = spring.right_coeff * input_level / 100;
-	left_coeff = spring.left_coeff * input_level / 100;
-
-	right_deadband = 0xfffe - spring.deadband - spring.center;
-	left_deadband = 0xfffe - spring.deadband + spring.center;
-
-	offset = effect.replay.delay;
-
-	t300rs_fill_header(&packet_damper->header, effect.id, 0x64);
-
-	packet_damper->right_coeff = cpu_to_le16(right_coeff);
-	packet_damper->left_coeff = cpu_to_le16(left_coeff);
-	packet_damper->right_deadband = cpu_to_le16(right_deadband);
-	packet_damper->left_deadband = cpu_to_le16(left_deadband);
-
-	memcpy(&packet_damper->damper_start, damper_values, ARRAY_SIZE(damper_values));
-	t300rs_fill_timing(&packet_damper->timing, duration, offset);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret)
-		hid_err(t300rs->hdev, "failed uploading spring\n");
-
-	return ret;
-}
-
-static int t300rs_upload_periodic(struct t300rs_device_entry *t300rs,
-		struct tmff2_effect_state *state)
-{
-	struct ff_effect effect = state->effect;
-	struct ff_periodic_effect periodic = state->effect.u.periodic;
-	struct __packed t300rs_packet_periodic {
-		struct t300rs_packet_header header;
-		uint16_t magnitude;
-		uint16_t periodic_offset;
-		uint16_t phase;
-		uint16_t period;
-		uint16_t marker;
-		struct t300rs_packet_envelope envelope;
-		uint8_t waveform;
-		struct t300rs_packet_timing timing;
-	} *packet_periodic = (struct t300rs_packet_periodic *)t300rs->send_buffer;
-
-	int ret;
-	uint16_t duration, period, offset, periodic_offset;
-	int16_t phase, magnitude;
-
-	duration = effect.replay.length - 1;
-	magnitude = (periodic.magnitude * fixp_sin16(effect.direction * 360 / 0x10000)) / 0x7fff;
-
-	phase = periodic.phase;
-	periodic_offset = periodic.offset;
-
-	period = periodic.period;
-	offset = effect.replay.delay;
-
-	t300rs_fill_header(&packet_periodic->header, effect.id, 0x6b);
-
-	packet_periodic->magnitude = cpu_to_le16(magnitude);
-	packet_periodic->periodic_offset = cpu_to_le16(periodic_offset);
-	packet_periodic->phase = cpu_to_le16(phase);
-	packet_periodic->period = cpu_to_le16(period);
-
-	packet_periodic->marker = cpu_to_le16(0x8000);
-
-	t300rs_fill_envelope(&packet_periodic->envelope, magnitude, duration,
-			&periodic.envelope);
-
-	packet_periodic->waveform = periodic.waveform - 0x57;
-
-	t300rs_fill_timing(&packet_periodic->timing, duration, offset);
-
-	ret = t300rs_send_int(t300rs);
-	if (ret)
-		hid_err(t300rs->hdev, "failed uploading periodic effect");
-
-	return ret;
-}
-
-int t300rs_update_effect(void *data, struct tmff2_effect_state *state)
-{
-	struct t300rs_device_entry *t300rs = data;
-	switch (state->effect.type) {
-		case FF_CONSTANT:
-			return t300rs_update_constant(t300rs, state);
-		case FF_RAMP:
-			return t300rs_update_ramp(t300rs, state);
-		case FF_SPRING:
-			return t300rs_update_spring(t300rs, state);
-		case FF_DAMPER:
-		case FF_FRICTION:
-		case FF_INERTIA:
-			return t300rs_update_damper(t300rs, state);
-		case FF_PERIODIC:
-			return t300rs_update_periodic(t300rs, state);
-		default:
-			hid_err(t300rs->hdev, "invalid effect type: %x", state->effect.type);
-			return -1;
-	}
-}
-
-int t300rs_upload_effect(void *data, struct tmff2_effect_state *state)
-{
-	struct t300rs_device_entry *t300rs = data;
-	switch (state->effect.type) {
-		case FF_CONSTANT:
-			return t300rs_upload_constant(t300rs, state);
-		case FF_RAMP:
-			return t300rs_upload_ramp(t300rs, state);
-		case FF_SPRING:
-			return t300rs_upload_spring(t300rs, state);
-		case FF_DAMPER:
-		case FF_FRICTION:
-		case FF_INERTIA:
-			return t300rs_upload_damper(t300rs, state);
-		case FF_PERIODIC:
-			return t300rs_upload_periodic(t300rs, state);
-		default:
-			hid_err(t300rs->hdev, "invalid effect type: %x", state->effect.type);
-			return -1;
-	}
-}
-
-static int t300rs_switch_mode(void *data, uint16_t mode)
-{
-	struct t300rs_device_entry *t300rs = data;
-	if (!t300rs)
-		return -ENODEV;
-
-	if(t300rs->mode == mode) /* already in specified mode */
-		return 0;
-
-	if (mode == 0)
-		/* go to normal mode */
-		usb_control_msg(t300rs->usbdev,
-				usb_sndctrlpipe(t300rs->usbdev, 0),
-				83, 0x41, 5, 0, 0, 0,
-				USB_CTRL_SET_TIMEOUT
-				);
-	else if (mode == 1)
-		/* go to advanced mode */
-		usb_control_msg(t300rs->usbdev,
-				usb_sndctrlpipe(t300rs->usbdev, 0),
-				83, 0x41, 3, 0, 0, 0,
-				USB_CTRL_SET_TIMEOUT
-				);
-	else
-		hid_warn(t300rs->hdev, "mode %i not supported\n", mode);
-
-
-	return 0;
-}
-
-static struct t300rs_alt_modes {
-	char *id;
-	char *label;
-	uint16_t mode;
-} t300rs_modes[] = {
-	{"base", "T300RS base", 0},
-	{"F1", "T300RS with F1 wheel attachment", 1}
-};
-
-static ssize_t t300rs_alt_mode_show(void *data, char *buf)
-{
-	struct t300rs_device_entry *t300rs = data;
-	ssize_t count = 0;
-	int i;
-	if (!t300rs)
-		return -ENODEV;
-
-	if (t300rs->attachment != T300RS_F1_ATTACHMENT)
-		/* we only support one base mode */
-		return scnprintf(buf, PAGE_SIZE, "%s: %s *\n",
-				t300rs_modes[0].id, t300rs_modes[0].label);
-
-	for (i = 0; i < ARRAY_SIZE(t300rs_modes); ++i) {
-		count += scnprintf(buf + count, PAGE_SIZE - count, "%s: %s",
-				t300rs_modes[i].id, t300rs_modes[i].label);
-
-		if (count >= PAGE_SIZE - 1)
-			return count;
-
-		if (t300rs_modes[i].mode == t300rs->mode)
-			count += scnprintf(buf + count, PAGE_SIZE - count, " *\n");
-		else
-			count += scnprintf(buf + count, PAGE_SIZE - count, "\n");
-
-		if (count >= PAGE_SIZE - 1)
-			return count;
-	}
-
-	return count;
-}
-
-static ssize_t t300rs_alt_mode_store(void *data, const char *buf, size_t count)
-{
-	struct t300rs_device_entry *t300rs = data;
-	int i, len, mode_len;
-	char *lbuf;
-	if (!t300rs)
-		return -ENODEV;
-
-	if (t300rs->attachment != T300RS_F1_ATTACHMENT)
-		return count; /* don't do anything */
-
-	lbuf = kasprintf(GFP_KERNEL, "%s", buf);
-	if (!lbuf)
-		return -ENOMEM;
-
-	len = strlen(buf);
-	for (i = 0; i < ARRAY_SIZE(t300rs_modes); ++i) {
-		mode_len = strlen(t300rs_modes[i].id);
-		if (mode_len > len)
-			continue;
-
-		if (strncmp(lbuf, t300rs_modes[i].id, mode_len) == 0) {
-			t300rs_switch_mode(data, t300rs_modes[i].mode);
-			break;
-		}
-	}
-
-	kfree(lbuf);
-	return count;
-}
-
-int t300rs_set_autocenter(void *data, uint16_t value)
-{
-	struct t300rs_device_entry *t300rs = data;
-	struct __packed t300rs_packet_autocenter {
-		struct t300rs_setup_header header;
-		uint16_t value;
-	} *autocenter_packet;
-	int ret;
-
-	if (!t300rs)
-		return -ENODEV;
-
-	/* TODO: this should probably also use a separately allocated buffer? */
-	autocenter_packet = (struct t300rs_packet_autocenter *)t300rs->send_buffer;
-
-	autocenter_packet->header.cmd = 0x08;
-	autocenter_packet->header.code = 0x04;
-	autocenter_packet->value = cpu_to_le16(0x01);
-
-	if ((ret = t300rs_send_int(t300rs))) {
-		hid_err(t300rs->hdev, "failed setting autocenter");
-		return ret;
-	}
-
-	autocenter_packet->header.cmd = 0x08;
-	autocenter_packet->header.code = 0x03;
-
-	autocenter_packet->value = cpu_to_le16(value);
-
-	if ((ret = t300rs_send_int(t300rs)))
-		hid_err(t300rs->hdev, "failed setting autocenter");
-
-	return ret;
-}
-
-int t300rs_set_gain(void *data, uint16_t gain)
-{
-	struct t300rs_device_entry *t300rs = data;
-	struct __packed t300rs_packet_gain {
-		struct t300rs_setup_header header;
-	} *gain_packet;
-	int ret;
-
-	if (!t300rs)
-		return -ENODEV;
-
-	gain_packet = (struct t300rs_packet_gain *)t300rs->send_buffer;
-	gain_packet->header.cmd = 0x02;
-	gain_packet->header.code = (gain >> 8) & 0xff;
-
-	if ((ret = t300rs_send_int(t300rs)))
-		hid_err(t300rs->hdev, "failed setting gain: %i\n", ret);
-
-	return ret;
-}
-
-int t300rs_set_range(void *data, uint16_t value)
-{
-	struct t300rs_device_entry *t300rs = data;
-	/* it's important that we don't use t300rs->send_buffer, as range can be
-	 * set from outside of the FFB environment, and we don't want to
-	 * accidentally overwrite any data. */
-	u8 *send_buffer = kzalloc(t300rs->buffer_length, GFP_KERNEL);
-	uint16_t scaled_value;
-	int ret;
-
-	if (value < 40) {
-		hid_info(t300rs->hdev, "value %i too small, clamping to 40\n", value);
-		value = 40;
-	}
-
-	if (value > 1080) {
-		hid_info(t300rs->hdev, "value %i too large, clamping to 1080\n", value);
-		value = 1080;
-	}
-
-	if (!send_buffer) {
-		ret = -EINVAL;
-		hid_err(t300rs->hdev, "could not allocate send_buffer\n");
-		goto err;
-	}
-
-	scaled_value = value * 0x3c;
-	send_buffer[0] = 0x08;
-	send_buffer[1] = 0x11;
-	send_buffer[2] = scaled_value & 0xff;
-	send_buffer[3] = scaled_value >> 8;
-
-	if ((ret = t300rs_send_buf(t300rs, send_buffer, t300rs->buffer_length)))
-		hid_warn(t300rs->hdev, "failed setting range\n");
-
-	/* since everythin went OK, update the current range */
-	range = value;
-err:
-	kfree(send_buffer);
-	return ret;
-}
-
-static int t300rs_send_open(struct t300rs_device_entry *t300rs)
-{
-	struct __packed t300rs_packet_open {
-		struct t300rs_setup_header header;
-	} *open_packet;
-
-	open_packet = (struct t300rs_packet_open *)t300rs->send_buffer;
-	open_packet->header.cmd = 0x01;
-	open_packet->header.code = 0x05;
-
-	return t300rs_send_int(t300rs);
-}
-
-static int t300rs_send_close(struct t300rs_device_entry *t300rs)
-{
-	struct __packed t300rs_packet_open {
-		struct t300rs_setup_header header;
-	} *open_packet;
-
-	open_packet = (struct t300rs_packet_open *)t300rs->send_buffer;
-	open_packet->header.cmd = 0x01;
-
-	return t300rs_send_int(t300rs);
-}
-
-int t300rs_open(void *data, int open_mode)
-{
-	struct t300rs_device_entry *t300rs = data;
-	if (!t300rs)
-		return -ENODEV;
-
-	if (open_mode && t300rs_send_open(t300rs))
-		hid_warn(t300rs->hdev, "failed sending open command\n");
-
-	return t300rs->open(t300rs->input_dev);
-}
-
-int t300rs_close(void *data, int open_mode)
-{
-	struct t300rs_device_entry *t300rs = data;
-	int ret;
-
-	if (!t300rs)
-		return -ENODEV;
-
-	if (open_mode && (ret = t300rs_send_close(t300rs)))
-		hid_warn(t300rs->hdev, "failed sending close command\n");
-
-	t300rs->close(t300rs->input_dev);
-	return ret;
-}
-
-static int t300rs_check_firmware(struct t300rs_device_entry *t300rs)
-{
-	int ret;
-	struct t300rs_fw_response *fw_response =
-		kzalloc(sizeof(struct t300rs_fw_response), GFP_KERNEL);
-
-	if (!fw_response) {
-		hid_err(t300rs->hdev, "could not allocate fw_response\n");
-		return -ENOMEM;
-	}
-
-	/* Fetch firmware version */
-	ret = usb_control_msg(t300rs->usbdev,
-			usb_rcvctrlpipe(t300rs->usbdev, 0),
-			t300rs_fw_request.bRequest,
-			t300rs_fw_request.bRequestType,
-			t300rs_fw_request.wValue,
-			t300rs_fw_request.wIndex,
-			fw_response,
-			t300rs_fw_request.wLength,
-			USB_CTRL_SET_TIMEOUT
-			);
-
-	if (ret < 0) {
-		hid_err(t300rs->hdev, "could not fetch firmware version: %i\n", ret);
-		goto out;
-	}
-
-	/* Educated guess */
-	if (fw_response->fw_version < 31 && ret >= 0) {
-		hid_err(t300rs->hdev,
-				"firmware version %i is too old, please update.\n",
-				fw_response->fw_version
-		       );
-
-		hid_info(t300rs->hdev, "note: this has to be done through Windows.\n");
-
-		ret = -EINVAL;
-		goto out;
-	}
-
-	/* everything OK */
-	ret = 0;
-
-out:
-	kfree(fw_response);
-	return ret;
-}
-
-static int t300rs_get_attachment(struct t300rs_device_entry *t300rs)
-{
-	/* taken directly from hid_tminit */
-	struct __packed t300rs_attachment_response
-	{
-		uint16_t type;
-
-		union {
-			struct __packed {
-				uint16_t field0;
-				uint16_t field1;
-				uint8_t attachment;
-				uint8_t model;
-				uint16_t field2;
-				uint16_t field3;
-				uint16_t field4;
-				uint16_t field5;
-			} a;
-
-			struct __packed {
-				uint16_t field0;
-				uint16_t field1;
-				uint8_t attachment;
-				uint8_t model;
-			} b;
-		};
-	} *response = kzalloc(GFP_KERNEL, sizeof(struct t300rs_attachment_response));
-	struct usb_ctrlrequest t300rs_attachment_rq = {
-		.bRequestType = 0xc1,
-		.bRequest = 73,
-		.wValue = 0,
-		.wIndex = 0,
-		.wLength = sizeof(struct t300rs_attachment_response)
-	};
-	int ret, attachment;
-	if (!response)
-		return -ENODEV;
-
-	ret = usb_control_msg(t300rs->usbdev,
-			usb_rcvctrlpipe(t300rs->usbdev, 0),
-			t300rs_attachment_rq.bRequest,
-			t300rs_attachment_rq.bRequestType,
-			t300rs_attachment_rq.wValue,
-			t300rs_attachment_rq.wIndex,
-			response,
-			sizeof(struct t300rs_attachment_response),
-			USB_CTRL_SET_TIMEOUT
-			);
-
-	if (ret < 0) {
-		hid_err(t300rs->hdev, "could not fetch attachment: %i\n", ret);
-		goto out;
-	}
-
-	if (response->type == cpu_to_le16(0x49)) {
-		attachment = response->a.attachment;
-	} else if (response->type == cpu_to_le16(0x47)) {
-		attachment = response->b.attachment;
-	} else {
-		hid_err(t300rs->hdev, "unknown packet type %hx\n, please contact a maintainer",
-				response->type);
-		ret = -EINVAL;
-		goto out;
-	}
-
-	kfree(response);
-	return attachment;
-
-out:
-	kfree(response);
-	return ret;
-}
-
-static int t300rs_wheel_init(struct tmff2_device_entry *tmff2, int open_mode)
-{
-	struct t300rs_device_entry *t300rs = kzalloc(sizeof(struct t300rs_device_entry), GFP_KERNEL);
-	struct list_head *report_list;
-	int ret;
-
-	if (!t300rs) {
-		ret = -ENOMEM;
-		goto t300rs_err;
-	}
-
-	t300rs->hdev = tmff2->hdev;
-	t300rs->input_dev = tmff2->input_dev;
-	t300rs->usbdev = to_usb_device(tmff2->hdev->dev.parent->parent);
-
-	if(t300rs->hdev->product == TMT300RS_PS4_NORM_ID)
-		t300rs->buffer_length = T300RS_PS4_BUFFER_LENGTH;
-	else
-		t300rs->buffer_length = T300RS_NORM_BUFFER_LENGTH;
-
-	t300rs->send_buffer = kzalloc(t300rs->buffer_length, GFP_KERNEL);
-	if (!t300rs->send_buffer) {
-		ret = -ENOMEM;
-		goto send_err;
-	}
-
-	if ((ret = t300rs_check_firmware(t300rs)))
-		goto firmware_err;
-
-	report_list = &t300rs->hdev->report_enum[HID_OUTPUT_REPORT].report_list;
-
-	/* because we set the rdesc, we know exactly which report and field to use */
-	t300rs->report = list_entry(report_list->next, struct hid_report, list);
-	t300rs->ff_field = t300rs->report->field[0];
-
-	t300rs->open = t300rs->input_dev->open;
-	t300rs->close = t300rs->input_dev->close;
-
-	/* TODO: PS4 advanced mode? */
-	alt_mode = (t300rs->mode = (t300rs->hdev->product == TMT300RS_PS3_ADV_ID));
-	if ((t300rs->attachment = t300rs_get_attachment(t300rs)) < 0)
-		t300rs->attachment = T300RS_DEFAULT_ATTACHMENT;
-
-	/* everythin went OK */
-	tmff2->data = t300rs;
-	tmff2->params = t300rs_params;
-	tmff2->max_effects = T300RS_MAX_EFFECTS;
-	memcpy(tmff2->supported_effects, t300rs_effects, sizeof(t300rs_effects));
-
-	if (!open_mode)
-		t300rs_send_open(t300rs);
-
-	hid_info(t300rs->hdev, "force feedback for T300RS\n");
-	return 0;
-
-firmware_err:
-	kfree(t300rs->send_buffer);
-send_err:
-	kfree(t300rs);
-t300rs_err:
-	hid_err(tmff2->hdev, "failed initializing T300RS\n");
-	return ret;
-}
-
-static int t300rs_wheel_destroy(void *data)
-{
-	struct t300rs_device_entry *t300rs = data;
-	if (!t300rs)
-		return -ENODEV;
-
-	kfree(t300rs->send_buffer);
-	kfree(t300rs);
-	return 0;
-}
-
-static __u8 *t300rs_wheel_fixup(struct hid_device *hdev, __u8 *rdesc,
-		unsigned int *rsize)
-{
-	switch (hdev->product) {
-		case TMT300RS_PS3_NORM_ID:
-		/* normal PS3 mode */
-		rdesc = t300rs_rdesc_nrm_fixed;
-		*rsize = sizeof(t300rs_rdesc_nrm_fixed);
-		break;
-
-		case TMT300RS_PS4_NORM_ID:
-		/* PS4 normal mode */
-		rdesc = t300rs_rdesc_ps4_fixed;
-		*rsize = sizeof(t300rs_rdesc_ps4_fixed);
-		break;
-
-		case TMT300RS_PS3_ADV_ID:
-		/* PS3 advanced mode */
-		rdesc = t300rs_rdesc_adv_fixed;
-		*rsize = sizeof(t300rs_rdesc_adv_fixed);
-		break;
-	}
-
-	return rdesc;
-}
-
-int t300rs_populate_api(struct tmff2_device_entry *tmff2)
-{
-	/* set callbacks */
-	tmff2->play_effect = t300rs_play_effect;
-	tmff2->upload_effect = t300rs_upload_effect;
-	tmff2->update_effect = t300rs_update_effect;
-	tmff2->stop_effect = t300rs_stop_effect;
-
-	tmff2->wheel_init = t300rs_wheel_init;
-	tmff2->wheel_destroy = t300rs_wheel_destroy;
-
-	tmff2->open = t300rs_open;
-	tmff2->close = t300rs_close;
-	tmff2->set_gain = t300rs_set_gain;
-	tmff2->set_range = t300rs_set_range;
-	tmff2->switch_mode = t300rs_switch_mode;
-	tmff2->alt_mode_show = t300rs_alt_mode_show;
-	tmff2->alt_mode_store = t300rs_alt_mode_store;
-	tmff2->set_autocenter = t300rs_set_autocenter;
-	tmff2->wheel_fixup = t300rs_wheel_fixup;
-
-	return 0;
-}