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Introduce shared functions for authentec drivers

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Currently provides register writing functionality only, more common ground
will be moved here soon.
This commit is contained in:
Daniel Drake
2007-11-20 12:23:27 +00:00
parent 8e0e8e4386
commit e228f2c7da
6 changed files with 183 additions and 189 deletions
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44
libfprint/drivers/aes4000.c
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@@ -24,6 +24,7 @@
#include <glib.h>
#include <usb.h>
#include <aeslib.h>
#include <fp_internal.h>
#define CTRL_TIMEOUT 1000
@@ -33,25 +34,6 @@
#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;
@@ -66,26 +48,31 @@ static void process_subarray(unsigned char *src, unsigned char *dst)
}
}
static const struct aes4000_regwrite {
unsigned char reg;
unsigned char value;
} init_reqs[] = {
static const struct aes_regwrite init_reqs[] = {
/* master reset */
{ 0x80, 0x01 },
{ 0, 0 },
{ 0x80, 0x00 },
{ 0, 0 },
{ 0x81, 0x00 },
{ 0x80, 0x00 },
{ 0, 0 },
/* scan reset */
{ 0x80, 0x02 },
{ 0, 0 },
{ 0x80, 0x00 },
{ 0, 0 },
/* disable register buffering */
{ 0x80, 0x04 },
{ 0, 0 },
{ 0x80, 0x00 },
{ 0, 0 },
{ 0x81, 0x00 },
{ 0, 0 },
/* windows driver reads registers now (81 02) */
{ 0x80, 0x00 },
{ 0x81, 0x00 },
@@ -126,10 +113,13 @@ static const struct aes4000_regwrite {
{ 0x9d, 0x09 }, /* set some challenge word bits */
{ 0x9e, 0x53 }, /* clear challenge word bits */
{ 0x9f, 0x6b }, /* set some challenge word bits */
{ 0, 0 },
{ 0x80, 0x00 },
{ 0x81, 0x00 },
{ 0, 0 },
{ 0x81, 0x04 },
{ 0, 0 },
{ 0x81, 0x00 },
};
@@ -142,11 +132,9 @@ static int capture(struct fp_img_dev *dev, gboolean unconditional,
unsigned char *data;
unsigned char *ptr;
for (i = 0; i < G_N_ELEMENTS(init_reqs); i++) {
r = write_reg(dev, init_reqs[i].reg, init_reqs[i].value);
if (r < 0)
return r;
}
r = aes_write_regv(dev, init_reqs, G_N_ELEMENTS(init_reqs));
if (r < 0)
return r;
img = fpi_img_new_for_imgdev(dev);
data = g_malloc(DATA_BUFLEN);