Commit be67f85c authored by Daniel Drake's avatar Daniel Drake

Add Authentec AES4000 driver

parent 3bbb7b8b
......@@ -9,7 +9,6 @@ DRIVERS
=======
Sunplus 895 driver
AES3501 driver
AES4000 driver
ID Mouse driver
Support for 2nd generation MS devices
Support for 2nd generation UPEK devices
......
......@@ -2,8 +2,9 @@ lib_LTLIBRARIES = libfprint.la
UPEKTS_SRC = drivers/upekts.c
URU4000_SRC = drivers/uru4000.c
AES4000_SRC = drivers/aes4000.c
DRIVER_SRC = $(UPEKTS_SRC) $(URU4000_SRC)
DRIVER_SRC = $(UPEKTS_SRC) $(URU4000_SRC) $(AES4000_SRC)
libfprint_la_CFLAGS = -fvisibility=hidden $(LIBUSB_CFLAGS) $(GLIB_CFLAGS) $(AM_CFLAGS)
libfprint_la_LDFLAGS = -version-info @lt_major@:@lt_revision@:@lt_age@
......
......@@ -79,6 +79,7 @@ static struct fp_driver * const primitive_drivers[] = {
static struct fp_img_driver * const img_drivers[] = {
&uru4000_driver,
&aes4000_driver,
};
static void register_drivers(void)
......
/*
* AuthenTec AES4000 driver for libfprint
* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
*
* 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 "aes4000"
#include <errno.h>
#include <glib.h>
#include <usb.h>
#include <fp_internal.h>
#define CTRL_TIMEOUT 1000
#define EP_IN (1 | USB_ENDPOINT_IN)
#define EP_OUT (2 | USB_ENDPOINT_OUT)
#define DATA_BUFLEN 0x1259
#define NR_SUBARRAYS 6
#define SUBARRAY_LEN 768
static int write_reg(struct fp_img_dev *dev, unsigned char reg,
unsigned char value)
{
unsigned char data[] = { reg, value };
int r;
fp_dbg("%02x=%02x", reg, value);
r = usb_bulk_write(dev->udev, EP_OUT, data, sizeof(data), CTRL_TIMEOUT);
if (r < 0) {
fp_err("bulk write error %d", r);
return r;
} else if (r < sizeof(data)) {
fp_err("unexpected short write %d/%d", r, sizeof(data));
return -EIO;
}
return 0;
}
static void process_subarray(unsigned char *src, unsigned char *dst)
{
int col, row;
int offset = -1;
for (col = 95; col >= 0; col--) {
for (row = 15; row >= 0; row -= 2) {
unsigned char val = src[++offset];
dst[(row * 96) + col] = (val & 0x7) * 36;
dst[((row - 1) * 96) + col] = ((val & 0x70) >> 4) * 36;
}
}
}
static const struct aes4000_regwrite {
unsigned char reg;
unsigned char value;
} init_reqs[] = {
/* master reset */
{ 0x80, 0x01 },
{ 0x80, 0x00 },
{ 0x81, 0x00 },
{ 0x80, 0x00 },
/* scan reset */
{ 0x80, 0x02 },
{ 0x80, 0x00 },
/* disable register buffering */
{ 0x80, 0x04 },
{ 0x80, 0x00 },
{ 0x81, 0x00 },
/* windows driver reads registers now (81 02) */
{ 0x80, 0x00 },
{ 0x81, 0x00 },
/* set excitation bias current: 2mhz drive ring frequency,
* 4V drive ring voltage, 16.5mA excitation bias */
{ 0x82, 0x04 },
/* continuously sample drive ring for finger detection,
* 62.50ms debounce delay */
{ 0x83, 0x13 },
{ 0x84, 0x07 }, /* set calibration resistance to 12 kiloohms */
{ 0x85, 0x3d }, /* set calibration capacitance */
{ 0x86, 0x03 }, /* detect drive voltage */
{ 0x87, 0x01 }, /* set detection frequency to 125khz */
{ 0x88, 0x03 }, /* set column scan period */
{ 0x89, 0x03 }, /* set measure drive */
{ 0x8a, 0x32 }, /* set measure frequency and sense amplifier bias */
{ 0x8b, 0x33 }, /* set matrix pattern */
{ 0x8c, 0x0b }, /* set demodulation phase 1 */
{ 0x8d, 0x04 }, /* set demodulation phase 2 */
{ 0x8e, 0x33 }, /* set sensor gain */
{ 0x8f, 0x03 }, /* set image parameters */
{ 0x90, 0x0f }, /* carrier offset null */
{ 0x91, 0x03 }, /* set A/D reference high */
{ 0x92, 0x03 }, /* set A/D reference low */
{ 0x93, 0x00 }, /* set start row to 0 */
{ 0x94, 0x05 }, /* set end row to 5 */
{ 0x95, 0x00 }, /* set start column to 0 */
{ 0x96, 0x18 }, /* set end column to 24*4=96 */
{ 0x97, 0x04 }, /* data format and thresholds */
{ 0x98, 0x28 }, /* image data control */
{ 0x99, 0x00 }, /* disable general purpose outputs */
{ 0x9a, 0x0b }, /* set initial scan state */
{ 0x9b, 0x00 }, /* clear challenge word bits */
{ 0x9c, 0x00 }, /* clear challenge word bits */
{ 0x9d, 0x09 }, /* set some challenge word bits */
{ 0x9e, 0x53 }, /* clear challenge word bits */
{ 0x9f, 0x6b }, /* set some challenge word bits */
{ 0x80, 0x00 },
{ 0x81, 0x00 },
{ 0x81, 0x04 },
{ 0x81, 0x00 },
};
static int capture(struct fp_img_dev *dev, gboolean unconditional,
struct fp_img **ret)
{
int i;
int r;
struct fp_img *img;
unsigned char *data;
unsigned char *ptr;
for (i = 0; i < ARRAY_SIZE(init_reqs); i++) {
r = write_reg(dev, init_reqs[i].reg, init_reqs[i].value);
if (r < 0)
return r;
}
img = fpi_img_new_for_imgdev(dev);
data = g_malloc(DATA_BUFLEN);
ptr = data;
/* See the timeout explanation in the uru4000 driver for the reasoning
* behind this silly loop. */
retry:
r = usb_bulk_read(dev->udev, EP_IN, data, DATA_BUFLEN, 1000);
if (r == -ETIMEDOUT)
goto retry;
if (r < 0) {
fp_err("data read failed, error %d", r);
goto err;
} else if (r < DATA_BUFLEN) {
fp_err("short data read (%d)", r);
r = -EIO;
goto err;
}
for (i = NR_SUBARRAYS - 1; i >= 0; i--) {
fp_dbg("subarray header byte %02x", *ptr);
ptr++;
process_subarray(ptr, img->data + (i * 96 * 16));
ptr += SUBARRAY_LEN;
}
img->flags = FP_IMG_COLORS_INVERTED;
*ret = img;
g_free(data);
return 0;
err:
g_free(data);
g_free(img);
return r;
}
static int dev_init(struct fp_img_dev *dev, unsigned long driver_data)
{
int r;
r = usb_claim_interface(dev->udev, 0);
if (r < 0) {
fp_err("could not claim interface 0");
return r;
}
return 0;
}
static void dev_exit(struct fp_img_dev *dev)
{
usb_release_interface(dev->udev, 0);
}
static const struct usb_id id_table[] = {
{ .vendor = 0x08ff, .product = 0x5501 },
{ 0, 0, 0, },
};
struct fp_img_driver aes4000_driver = {
.driver = {
.name = FP_COMPONENT,
.full_name = "AuthenTec AES4000",
.id_table = id_table,
},
.flags = 0,
.img_height = 96,
.img_width = 96,
.init = dev_init,
.exit = dev_exit,
.capture = capture,
};
......@@ -139,6 +139,7 @@ struct fp_img_driver {
extern struct fp_driver upekts_driver;
extern struct fp_img_driver uru4000_driver;
extern struct fp_img_driver aes4000_driver;
void fpi_img_driver_setup(struct fp_img_driver *idriver);
......
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