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libfprint/libfprint/drivers/upektc_img.c
Bastien Nocera 5c0bc90677 lib: Add new bus types for drivers 
Add a way for drivers to declare they support a bus type other than USB.
We have declarations for SPI and virtual drivers, though there's no
device discovery implemented yet.

https://bugs.freedesktop.org/show_bug.cgi?id=106279

Patch modified from the original by Benjamin Berg <bberg@redhat.com>.
The drivers updates were mainly done using the following spatch:

@drv1@
identifier driver_name;
identifier id_table_var;
@@
struct fp_driver driver_name = {
	...,
-	.id_table = id_table_var,
+	.bus = BUS_TYPE_USB,
+	.id_table.usb = id_table_var,
	...
};
@imgdrv1@
identifier driver_name;
identifier id_table_var;
@@
struct fp_img_driver driver_name = {
	...,
	.driver = {
		...,
-		.id_table = id_table_var,
+		.bus = BUS_TYPE_USB,
+		.id_table.usb = id_table_var,
		...
	},
	...,
};
@imgdrv2@
identifier driver_name;
identifier discover_func;
@@
struct fp_img_driver driver_name = {
	...,
	.driver = {
		...,
-		.discover = discover_func,
+		.usb_discover = discover_func,
		...
	},
	...
};
@idtable1@
identifier drv;
expression x;
@@
	struct fp_driver *drv;
	<...
-	drv->id_table[x]
+	drv->id_table.usb[x]
	...>
@idtable2@
identifier drv;
identifier func;
expression x;
@@
func (..., struct fp_driver *drv, ...)
{
	<...
-	drv->id_table[x]
+	drv->id_table.usb[x]
	...>
}
2019-06-12 17:48:39 +02:00

649 lines
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/*
* UPEK TouchChip driver for libfprint
* Copyright (C) 2013 Vasily Khoruzhick <anarsoul@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#define FP_COMPONENT "upektc_img"
#include "drivers_api.h"
#include "upek_proto.h"
#include "aeslib.h"
#include "upektc_img.h"
static void start_capture(struct fp_img_dev *dev);
static void start_deactivation(struct fp_img_dev *dev);
#define EP_IN (1 | LIBUSB_ENDPOINT_IN)
#define EP_OUT (2 | LIBUSB_ENDPOINT_OUT)
#define CTRL_TIMEOUT 4000
#define BULK_TIMEOUT 4000
#define IMAGE_WIDTH 144
#define IMAGE_HEIGHT 384
#define IMAGE_SIZE (IMAGE_WIDTH * IMAGE_HEIGHT)
#define MAX_CMD_SIZE 64
#define MAX_RESPONSE_SIZE 2052
#define SHORT_RESPONSE_SIZE 64
struct upektc_img_dev {
unsigned char cmd[MAX_CMD_SIZE];
unsigned char response[MAX_RESPONSE_SIZE];
unsigned char image_bits[IMAGE_SIZE * 2];
unsigned char seq;
size_t image_size;
size_t response_rest;
gboolean deactivating;
};
/****** HELPERS ******/
static void upektc_img_cmd_fix_seq(unsigned char *cmd_buf, unsigned char seq)
{
uint8_t byte;
byte = cmd_buf[5];
byte &= 0x0f;
byte |= (seq << 4);
cmd_buf[5] = byte;
}
static void upektc_img_cmd_update_crc(unsigned char *cmd_buf, size_t size)
{
/* CRC does not cover Ciao prefix (4 bytes) and CRC location (2 bytes) */
uint16_t crc = udf_crc(cmd_buf + 4, size - 6);
cmd_buf[size - 2] = (crc & 0x00ff);
cmd_buf[size - 1] = (crc & 0xff00) >> 8;
}
static void
upektc_img_submit_req(fpi_ssm *ssm,
struct fp_img_dev *dev,
const unsigned char *buf,
size_t buf_size,
unsigned char seq,
libusb_transfer_cb_fn cb)
{
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(FP_DEV(dev));
struct libusb_transfer *transfer = fpi_usb_alloc();
int r;
BUG_ON(buf_size > MAX_CMD_SIZE);
transfer->flags |= LIBUSB_TRANSFER_FREE_TRANSFER;
memcpy(upekdev->cmd, buf, buf_size);
upektc_img_cmd_fix_seq(upekdev->cmd, seq);
upektc_img_cmd_update_crc(upekdev->cmd, buf_size);
libusb_fill_bulk_transfer(transfer, fpi_dev_get_usb_dev(FP_DEV(dev)), EP_OUT, upekdev->cmd, buf_size,
cb, ssm, BULK_TIMEOUT);
r = libusb_submit_transfer(transfer);
if (r < 0) {
libusb_free_transfer(transfer);
fpi_ssm_mark_failed(ssm, r);
}
}
static void
upektc_img_read_data(fpi_ssm *ssm,
struct fp_img_dev *dev,
size_t buf_size,
size_t buf_offset,
libusb_transfer_cb_fn cb)
{
struct libusb_transfer *transfer = fpi_usb_alloc();
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(FP_DEV(dev));
int r;
BUG_ON(buf_size > MAX_RESPONSE_SIZE);
transfer->flags |= LIBUSB_TRANSFER_FREE_TRANSFER;
libusb_fill_bulk_transfer(transfer, fpi_dev_get_usb_dev(FP_DEV(dev)), EP_IN, upekdev->response + buf_offset, buf_size,
cb, ssm, BULK_TIMEOUT);
r = libusb_submit_transfer(transfer);
if (r < 0) {
libusb_free_transfer(transfer);
fpi_ssm_mark_failed(ssm, r);
}
}
/****** CAPTURE ******/
enum capture_states {
CAPTURE_INIT_CAPTURE,
CAPTURE_READ_DATA,
CAPTURE_READ_DATA_TERM,
CAPTURE_ACK_00_28,
CAPTURE_ACK_08,
CAPTURE_ACK_FRAME,
CAPTURE_ACK_00_28_TERM,
CAPTURE_NUM_STATES,
};
static void capture_reqs_cb(struct libusb_transfer *transfer)
{
fpi_ssm *ssm = transfer->user_data;
if ((transfer->status != LIBUSB_TRANSFER_COMPLETED) ||
(transfer->length != transfer->actual_length)) {
fpi_ssm_mark_failed(ssm, -EIO);
return;
}
switch (fpi_ssm_get_cur_state(ssm)) {
case CAPTURE_ACK_00_28_TERM:
fpi_ssm_jump_to_state(ssm, CAPTURE_READ_DATA_TERM);
break;
default:
fpi_ssm_jump_to_state(ssm, CAPTURE_READ_DATA);
break;
}
}
static int upektc_img_process_image_frame(unsigned char *image_buf, unsigned char *cmd_res)
{
int offset = 8;
int len = ((cmd_res[5] & 0x0f) << 8) | (cmd_res[6]);
len -= 1;
if (cmd_res[7] == 0x2c) {
len -= 10;
offset += 10;
}
if (cmd_res[7] == 0x20) {
len -= 4;
}
memcpy(image_buf, cmd_res + offset, len);
return len;
}
static void capture_read_data_cb(struct libusb_transfer *transfer)
{
fpi_ssm *ssm = transfer->user_data;
struct fp_img_dev *dev = fpi_ssm_get_user_data(ssm);
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(FP_DEV(dev));
unsigned char *data = upekdev->response;
struct fp_img *img;
size_t response_size;
if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
fp_dbg("request is not completed, %d", transfer->status);
fpi_ssm_mark_failed(ssm, -EIO);
return;
}
if (upekdev->deactivating) {
fp_dbg("Deactivate requested\n");
fpi_ssm_mark_completed(ssm);
return;
}
fp_dbg("request completed, len: %.4x", transfer->actual_length);
if (transfer->actual_length == 0) {
fpi_ssm_jump_to_state(ssm, fpi_ssm_get_cur_state(ssm));
return;
}
if (fpi_ssm_get_cur_state(ssm) == CAPTURE_READ_DATA_TERM) {
fp_dbg("Terminating SSM\n");
fpi_ssm_mark_completed(ssm);
return;
}
if (!upekdev->response_rest) {
response_size = ((data[5] & 0x0f) << 8) + data[6];
response_size += 9; /* 7 bytes for header, 2 for CRC */
if (response_size > transfer->actual_length) {
fp_dbg("response_size is %lu, actual_length is %d\n",
response_size, transfer->actual_length);
fp_dbg("Waiting for rest of transfer");
BUG_ON(upekdev->response_rest);
upekdev->response_rest = response_size - transfer->actual_length;
fpi_ssm_jump_to_state(ssm, CAPTURE_READ_DATA);
return;
}
}
upekdev->response_rest = 0;
switch (data[4]) {
case 0x00:
switch (data[7]) {
/* No finger */
case 0x28:
fp_dbg("18th byte is %.2x\n", data[18]);
switch (data[18]) {
case 0x0c:
/* no finger */
fpi_ssm_jump_to_state(ssm, CAPTURE_ACK_00_28);
break;
case 0x00:
/* finger is present! */
fpi_ssm_jump_to_state(ssm, CAPTURE_ACK_00_28);
break;
case 0x1e:
/* short scan */
fp_err("short scan, aborting\n");
fpi_imgdev_abort_scan(dev, FP_VERIFY_RETRY_TOO_SHORT);
fpi_imgdev_report_finger_status(dev, FALSE);
fpi_ssm_jump_to_state(ssm, CAPTURE_ACK_00_28_TERM);
break;
case 0x1d:
/* too much horisontal movement */
fp_err("too much horisontal movement, aborting\n");
fpi_imgdev_abort_scan(dev, FP_VERIFY_RETRY_CENTER_FINGER);
fpi_imgdev_report_finger_status(dev, FALSE);
fpi_ssm_jump_to_state(ssm, CAPTURE_ACK_00_28_TERM);
break;
default:
/* some error happened, cancel scan */
fp_err("something bad happened, stop scan\n");
fpi_imgdev_abort_scan(dev, FP_VERIFY_RETRY);
fpi_imgdev_report_finger_status(dev, FALSE);
fpi_ssm_jump_to_state(ssm, CAPTURE_ACK_00_28_TERM);
break;
}
break;
/* Image frame with additional info */
case 0x2c:
fpi_imgdev_report_finger_status(dev, TRUE);
/* Plain image frame */
case 0x24:
upekdev->image_size +=
upektc_img_process_image_frame(upekdev->image_bits + upekdev->image_size,
data);
fpi_ssm_jump_to_state(ssm, CAPTURE_ACK_FRAME);
break;
/* Last image frame */
case 0x20:
upekdev->image_size +=
upektc_img_process_image_frame(upekdev->image_bits + upekdev->image_size,
data);
BUG_ON(upekdev->image_size != IMAGE_SIZE);
fp_dbg("Image size is %lu\n", upekdev->image_size);
img = fpi_img_new(IMAGE_SIZE);
img->flags = FP_IMG_PARTIAL;
memcpy(img->data, upekdev->image_bits, IMAGE_SIZE);
fpi_imgdev_image_captured(dev, img);
fpi_imgdev_report_finger_status(dev, FALSE);
fpi_ssm_mark_completed(ssm);
break;
default:
fp_err("Uknown response!\n");
fpi_ssm_mark_failed(ssm, -EIO);
break;
}
break;
case 0x08:
fpi_ssm_jump_to_state(ssm, CAPTURE_ACK_08);
break;
default:
fp_err("Not handled response!\n");
fpi_ssm_mark_failed(ssm, -EIO);
}
}
static void capture_run_state(fpi_ssm *ssm, struct fp_dev *_dev, void *user_data)
{
struct fp_img_dev *dev = user_data;
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(_dev);
switch (fpi_ssm_get_cur_state(ssm)) {
case CAPTURE_INIT_CAPTURE:
upektc_img_submit_req(ssm, dev, upek2020_init_capture, sizeof(upek2020_init_capture),
upekdev->seq, capture_reqs_cb);
upekdev->seq++;
break;
case CAPTURE_READ_DATA:
case CAPTURE_READ_DATA_TERM:
if (!upekdev->response_rest)
upektc_img_read_data(ssm, dev, SHORT_RESPONSE_SIZE, 0, capture_read_data_cb);
else
upektc_img_read_data(ssm, dev, MAX_RESPONSE_SIZE - SHORT_RESPONSE_SIZE,
SHORT_RESPONSE_SIZE, capture_read_data_cb);
break;
case CAPTURE_ACK_00_28:
case CAPTURE_ACK_00_28_TERM:
upektc_img_submit_req(ssm, dev, upek2020_ack_00_28, sizeof(upek2020_ack_00_28),
upekdev->seq, capture_reqs_cb);
upekdev->seq++;
break;
case CAPTURE_ACK_08:
upektc_img_submit_req(ssm, dev, upek2020_ack_08, sizeof(upek2020_ack_08),
0, capture_reqs_cb);
break;
case CAPTURE_ACK_FRAME:
upektc_img_submit_req(ssm, dev, upek2020_ack_frame, sizeof(upek2020_ack_frame),
upekdev->seq, capture_reqs_cb);
upekdev->seq++;
break;
};
}
static void capture_sm_complete(fpi_ssm *ssm, struct fp_dev *_dev, void *user_data)
{
struct fp_img_dev *dev = user_data;
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(_dev);
int err = fpi_ssm_get_error(ssm);
fp_dbg("Capture completed, %d", err);
fpi_ssm_free(ssm);
if (upekdev->deactivating)
start_deactivation(dev);
else if (err)
fpi_imgdev_session_error(dev, err);
else
start_capture(dev);
}
static void start_capture(struct fp_img_dev *dev)
{
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(FP_DEV(dev));
fpi_ssm *ssm;
upekdev->image_size = 0;
ssm = fpi_ssm_new(FP_DEV(dev), capture_run_state, CAPTURE_NUM_STATES, dev);
fpi_ssm_start(ssm, capture_sm_complete);
}
/****** INITIALIZATION/DEINITIALIZATION ******/
enum deactivate_states {
DEACTIVATE_DEINIT,
DEACTIVATE_READ_DEINIT_DATA,
DEACTIVATE_NUM_STATES,
};
static void deactivate_reqs_cb(struct libusb_transfer *transfer)
{
fpi_ssm *ssm = transfer->user_data;
if ((transfer->status == LIBUSB_TRANSFER_COMPLETED) &&
(transfer->length == transfer->actual_length)) {
fpi_ssm_jump_to_state(ssm, CAPTURE_READ_DATA);
} else {
fpi_ssm_mark_failed(ssm, -EIO);
}
}
/* TODO: process response properly */
static void deactivate_read_data_cb(struct libusb_transfer *transfer)
{
fpi_ssm *ssm = transfer->user_data;
if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
fpi_ssm_mark_completed(ssm);
} else {
fpi_ssm_mark_failed(ssm, -EIO);
}
}
static void deactivate_run_state(fpi_ssm *ssm, struct fp_dev *_dev, void *user_data)
{
struct fp_img_dev *dev = user_data;
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(_dev);
switch (fpi_ssm_get_cur_state(ssm)) {
case DEACTIVATE_DEINIT:
upektc_img_submit_req(ssm, dev, upek2020_deinit, sizeof(upek2020_deinit),
upekdev->seq, deactivate_reqs_cb);
upekdev->seq++;
break;
case DEACTIVATE_READ_DEINIT_DATA:
upektc_img_read_data(ssm, dev, SHORT_RESPONSE_SIZE, 0, deactivate_read_data_cb);
break;
};
}
static void deactivate_sm_complete(fpi_ssm *ssm, struct fp_dev *_dev, void *user_data)
{
struct fp_img_dev *dev = user_data;
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(_dev);
int err = fpi_ssm_get_error(ssm);
fp_dbg("Deactivate completed");
fpi_ssm_free(ssm);
if (err) {
fpi_imgdev_session_error(dev, err);
return;
}
upekdev->deactivating = FALSE;
fpi_imgdev_deactivate_complete(dev);
}
static void start_deactivation(struct fp_img_dev *dev)
{
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(FP_DEV(dev));
fpi_ssm *ssm;
upekdev->image_size = 0;
ssm = fpi_ssm_new(FP_DEV(dev), deactivate_run_state, DEACTIVATE_NUM_STATES, dev);
fpi_ssm_start(ssm, deactivate_sm_complete);
}
enum activate_states {
ACTIVATE_CONTROL_REQ_1,
ACTIVATE_READ_CTRL_RESP_1,
ACTIVATE_INIT_1,
ACTIVATE_READ_INIT_1_RESP,
ACTIVATE_INIT_2,
ACTIVATE_READ_INIT_2_RESP,
ACTIVATE_CONTROL_REQ_2,
ACTIVATE_READ_CTRL_RESP_2,
ACTIVATE_INIT_3,
ACTIVATE_READ_INIT_3_RESP,
ACTIVATE_INIT_4,
ACTIVATE_READ_INIT_4_RESP,
ACTIVATE_NUM_STATES,
};
static void init_reqs_ctrl_cb(struct libusb_transfer *transfer)
{
fpi_ssm *ssm = transfer->user_data;
if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
fpi_ssm_next_state(ssm);
} else {
fpi_ssm_mark_failed(ssm, -EIO);
}
}
static void init_reqs_cb(struct libusb_transfer *transfer)
{
fpi_ssm *ssm = transfer->user_data;
if ((transfer->status == LIBUSB_TRANSFER_COMPLETED) &&
(transfer->length == transfer->actual_length)) {
fpi_ssm_next_state(ssm);
} else {
fpi_ssm_mark_failed(ssm, -EIO);
}
}
/* TODO: process response properly */
static void init_read_data_cb(struct libusb_transfer *transfer)
{
fpi_ssm *ssm = transfer->user_data;
if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
fpi_ssm_next_state(ssm);
} else {
fpi_ssm_mark_failed(ssm, -EIO);
}
}
static void activate_run_state(fpi_ssm *ssm, struct fp_dev *dev, void *user_data)
{
struct libusb_transfer *transfer;
struct fp_img_dev *idev = user_data;
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(dev);
int r;
switch (fpi_ssm_get_cur_state(ssm)) {
case ACTIVATE_CONTROL_REQ_1:
case ACTIVATE_CONTROL_REQ_2:
{
unsigned char *data;
transfer = fpi_usb_alloc();
transfer->flags |= LIBUSB_TRANSFER_FREE_BUFFER |
LIBUSB_TRANSFER_FREE_TRANSFER;
data = g_malloc0(LIBUSB_CONTROL_SETUP_SIZE + 1);
libusb_fill_control_setup(data,
LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_RECIPIENT_DEVICE, 0x0c, 0x100, 0x0400, 1);
libusb_fill_control_transfer(transfer, fpi_dev_get_usb_dev(dev), data,
init_reqs_ctrl_cb, ssm, CTRL_TIMEOUT);
r = libusb_submit_transfer(transfer);
if (r < 0) {
g_free(data);
libusb_free_transfer(transfer);
fpi_ssm_mark_failed(ssm, r);
}
}
break;
case ACTIVATE_INIT_1:
upektc_img_submit_req(ssm, idev, upek2020_init_1, sizeof(upek2020_init_1),
0, init_reqs_cb);
break;
case ACTIVATE_INIT_2:
upektc_img_submit_req(ssm, idev, upek2020_init_2, sizeof(upek2020_init_2),
0, init_reqs_cb);
break;
case ACTIVATE_INIT_3:
upektc_img_submit_req(ssm, idev, upek2020_init_3, sizeof(upek2020_init_3),
0, init_reqs_cb);
break;
case ACTIVATE_INIT_4:
upektc_img_submit_req(ssm, idev, upek2020_init_4, sizeof(upek2020_init_4),
upekdev->seq, init_reqs_cb);
/* Seq should be updated after 4th init */
upekdev->seq++;
break;
case ACTIVATE_READ_CTRL_RESP_1:
case ACTIVATE_READ_CTRL_RESP_2:
case ACTIVATE_READ_INIT_1_RESP:
case ACTIVATE_READ_INIT_2_RESP:
case ACTIVATE_READ_INIT_3_RESP:
case ACTIVATE_READ_INIT_4_RESP:
upektc_img_read_data(ssm, idev, SHORT_RESPONSE_SIZE, 0, init_read_data_cb);
break;
}
}
static void activate_sm_complete(fpi_ssm *ssm, struct fp_dev *_dev, void *user_data)
{
struct fp_img_dev *dev = user_data;
int err = fpi_ssm_get_error(ssm);
fpi_ssm_free(ssm);
fp_dbg("%s status %d", __func__, err);
fpi_imgdev_activate_complete(dev, err);
if (!err)
start_capture(dev);
}
static int dev_activate(struct fp_img_dev *dev, enum fp_imgdev_state state)
{
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(FP_DEV(dev));
fpi_ssm *ssm = fpi_ssm_new(FP_DEV(dev), activate_run_state,
ACTIVATE_NUM_STATES, dev);
upekdev->seq = 0;
fpi_ssm_start(ssm, activate_sm_complete);
return 0;
}
static void dev_deactivate(struct fp_img_dev *dev)
{
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(FP_DEV(dev));
upekdev->deactivating = TRUE;
}
static int dev_init(struct fp_img_dev *dev, unsigned long driver_data)
{
/* TODO check that device has endpoints we're using */
int r;
struct upektc_img_dev *upekdev;
r = libusb_claim_interface(fpi_dev_get_usb_dev(FP_DEV(dev)), 0);
if (r < 0) {
fp_err("could not claim interface 0: %s", libusb_error_name(r));
return r;
}
upekdev = g_malloc0(sizeof(struct upektc_img_dev));
fp_dev_set_instance_data(FP_DEV(dev), upekdev);
fpi_imgdev_open_complete(dev, 0);
return 0;
}
static void dev_deinit(struct fp_img_dev *dev)
{
struct upektc_img_dev *upekdev = FP_INSTANCE_DATA(FP_DEV(dev));
g_free(upekdev);
libusb_release_interface(fpi_dev_get_usb_dev(FP_DEV(dev)), 0);
fpi_imgdev_close_complete(dev);
}
static int discover(struct libusb_device_descriptor *dsc, uint32_t *devtype)
{
if (dsc->idProduct == 0x2020 && dsc->bcdDevice == 1)
return 1;
if (dsc->idProduct == 0x2016 && dsc->bcdDevice == 2)
return 1;
return 0;
}
static const struct usb_id id_table[] = {
{ .vendor = 0x147e, .product = 0x2016 },
{ .vendor = 0x147e, .product = 0x2020 },
{ 0, 0, 0, },
};
struct fp_img_driver upektc_img_driver = {
.driver = {
.id = UPEKTC_IMG_ID,
.name = FP_COMPONENT,
.full_name = "Upek TouchChip Fingerprint Coprocessor",
.bus = BUS_TYPE_USB,
.id_table.usb = id_table,
.scan_type = FP_SCAN_TYPE_SWIPE,
.usb_discover = discover,
},
.flags = 0,
.img_height = IMAGE_HEIGHT,
.img_width = IMAGE_WIDTH,
.bz3_threshold = 20,
.open = dev_init,
.close = dev_deinit,
.activate = dev_activate,
.deactivate = dev_deactivate,
};
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