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uru4000: Port URU4000 driver to USB helpers

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Doesn't look very useful.
This commit is contained in:
Bastien Nocera 2018-09-26 15:52:49 +02:00
parent 96f2e07cdd
commit 27accf42f2
1 changed files with 71 additions and 56 deletions
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127
libfprint/drivers/uru4000.c
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@ -120,9 +120,10 @@ struct uru4k_dev {
unsigned char last_reg_rd[16];
unsigned char last_hwstat;
struct libusb_transfer *irq_transfer;
struct libusb_transfer *img_transfer;
fpi_usb_transfer *irq_transfer;
fpi_usb_transfer *img_transfer;
void *img_data;
int img_data_actual_length;
uint16_t img_lines_done, img_block;
uint32_t img_enc_seed;
@ -366,10 +367,13 @@ sm_do_challenge_response(fpi_ssm *ssm,
static int start_irq_handler(struct fp_img_dev *dev);
static void irq_handler(struct libusb_transfer *transfer)
static void irq_handler(struct libusb_transfer *transfer,
struct fp_dev *_dev,
fpi_ssm *ssm,
void *user_data)
{
struct fp_img_dev *dev = transfer->user_data;
struct uru4k_dev *urudev = FP_INSTANCE_DATA(FP_DEV(dev));
struct fp_img_dev *dev = FP_IMG_DEV(_dev);
struct uru4k_dev *urudev = FP_INSTANCE_DATA(_dev);
unsigned char *data = transfer->buffer;
uint16_t type;
int r = 0;
@ -391,8 +395,6 @@ static void irq_handler(struct libusb_transfer *transfer)
type = GUINT16_FROM_BE(*((uint16_t *) data));
fp_dbg("recv irq type %04x", type);
g_free(data);
libusb_free_transfer(transfer);
/* The 0800 interrupt seems to indicate imminent failure (0 bytes transfer)
* of the next scan. It still appears on occasion. */
@ -408,44 +410,43 @@ static void irq_handler(struct libusb_transfer *transfer)
if (r == 0)
return;
transfer = NULL;
data = NULL;
err:
if (urudev->irq_cb)
urudev->irq_cb(dev, r, 0, urudev->irq_cb_data);
out:
g_free(data);
libusb_free_transfer(transfer);
urudev->irq_transfer = NULL;
}
static int start_irq_handler(struct fp_img_dev *dev)
{
struct uru4k_dev *urudev = FP_INSTANCE_DATA(FP_DEV(dev));
struct libusb_transfer *transfer = fpi_usb_alloc();
fpi_usb_transfer *transfer;
unsigned char *data;
int r;
data = g_malloc(IRQ_LENGTH);
libusb_fill_bulk_transfer(transfer, fpi_dev_get_usb_dev(FP_DEV(dev)), EP_INTR, data, IRQ_LENGTH,
irq_handler, dev, 0);
transfer = fpi_usb_fill_bulk_transfer(FP_DEV(dev),
NULL,
EP_INTR,
data,
IRQ_LENGTH,
irq_handler,
NULL,
0);
urudev->irq_transfer = transfer;
r = libusb_submit_transfer(transfer);
if (r < 0) {
g_free(data);
libusb_free_transfer(transfer);
r = fpi_usb_submit_transfer(transfer);
if (r < 0)
urudev->irq_transfer = NULL;
}
return r;
}
static void stop_irq_handler(struct fp_img_dev *dev, irqs_stopped_cb_fn cb)
{
struct uru4k_dev *urudev = FP_INSTANCE_DATA(FP_DEV(dev));
struct libusb_transfer *transfer = urudev->irq_transfer;
fpi_usb_transfer *transfer = urudev->irq_transfer;
if (transfer) {
libusb_cancel_transfer(transfer);
fpi_usb_cancel_transfer(transfer);
urudev->irqs_stopped_cb = cb;
}
}
@ -592,28 +593,6 @@ enum imaging_states {
IMAGING_NUM_STATES
};
static void image_transfer_cb(struct libusb_transfer *transfer)
{
fpi_ssm *ssm = transfer->user_data;
if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
fp_dbg("cancelled");
fpi_ssm_mark_failed(ssm, -ECANCELED);
} else if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
fp_dbg("error");
fpi_ssm_mark_failed(ssm, -EIO);
} else {
fpi_ssm_next_state(ssm);
}
}
enum {
BLOCKF_CHANGE_KEY = 0x80,
BLOCKF_NO_KEY_UPDATE = 0x04,
BLOCKF_ENCRYPTED = 0x02,
BLOCKF_NOT_PRESENT = 0x01,
};
struct uru4k_image {
uint8_t unknown_00[4];
uint16_t num_lines;
@ -627,6 +606,33 @@ struct uru4k_image {
uint8_t data[IMAGE_HEIGHT][IMAGE_WIDTH];
};
static void image_transfer_cb(struct libusb_transfer *transfer,
struct fp_dev *dev,
fpi_ssm *ssm,
void *user_data)
{
if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
fp_dbg("cancelled");
fpi_ssm_mark_failed(ssm, -ECANCELED);
} else if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
fp_dbg("error");
fpi_ssm_mark_failed(ssm, -EIO);
} else {
struct uru4k_dev *urudev = FP_INSTANCE_DATA(dev);
urudev->img_data = g_memdup(transfer->buffer, sizeof(struct uru4k_image));
urudev->img_data_actual_length = transfer->actual_length;
fpi_ssm_next_state(ssm);
}
}
enum {
BLOCKF_CHANGE_KEY = 0x80,
BLOCKF_NO_KEY_UPDATE = 0x04,
BLOCKF_ENCRYPTED = 0x02,
BLOCKF_NOT_PRESENT = 0x01,
};
static uint32_t update_key(uint32_t key)
{
/* linear feedback shift register
@ -709,20 +715,20 @@ static void imaging_run_state(fpi_ssm *ssm, struct fp_dev *_dev, void *user_data
case IMAGING_CAPTURE:
urudev->img_lines_done = 0;
urudev->img_block = 0;
libusb_fill_bulk_transfer(urudev->img_transfer, fpi_dev_get_usb_dev(FP_DEV(dev)), EP_DATA,
urudev->img_data, sizeof(struct uru4k_image), image_transfer_cb, ssm, 0);
r = libusb_submit_transfer(urudev->img_transfer);
if (r < 0)
r = fpi_usb_submit_transfer(urudev->img_transfer);
if (r < 0) {
urudev->img_transfer = NULL;
fpi_ssm_mark_failed(ssm, -EIO);
}
break;
case IMAGING_SEND_INDEX:
fp_dbg("hw header lines %d", img->num_lines);
if (img->num_lines >= IMAGE_HEIGHT ||
urudev->img_transfer->actual_length < img->num_lines * IMAGE_WIDTH + 64) {
urudev->img_data_actual_length < img->num_lines * IMAGE_WIDTH + 64) {
fp_err("bad captured image (%d lines) or size mismatch %d < %d",
img->num_lines,
urudev->img_transfer->actual_length,
urudev->img_data_actual_length,
img->num_lines * IMAGE_WIDTH + 64);
fpi_ssm_jump_to_state(ssm, IMAGING_CAPTURE);
return;
@ -830,11 +836,12 @@ static void imaging_complete(fpi_ssm *ssm, struct fp_dev *_dev, void *user_data)
if (r)
fpi_imgdev_session_error(dev, r);
/* Freed by callback or cancellation */
urudev->img_transfer = NULL;
g_free(urudev->img_data);
urudev->img_data = NULL;
libusb_free_transfer(urudev->img_transfer);
urudev->img_transfer = NULL;
urudev->img_data_actual_length = 0;
r = execute_state_change(dev);
if (r)
@ -1205,6 +1212,7 @@ static int execute_state_change(struct fp_img_dev *dev)
{
struct uru4k_dev *urudev = FP_INSTANCE_DATA(FP_DEV(dev));
fpi_ssm *ssm;
void *img_data;
switch (urudev->activate_state) {
case IMGDEV_STATE_INACTIVE:
@ -1227,11 +1235,18 @@ static int execute_state_change(struct fp_img_dev *dev)
fp_dbg("starting capture");
urudev->irq_cb = NULL;
urudev->img_transfer = fpi_usb_alloc();
urudev->img_data = g_malloc(sizeof(struct uru4k_image));
urudev->img_enc_seed = rand();
ssm = fpi_ssm_new(FP_DEV(dev), imaging_run_state, IMAGING_NUM_STATES, dev);
img_data = g_malloc(sizeof(struct uru4k_image));
urudev->img_enc_seed = rand();
urudev->img_transfer = fpi_usb_fill_bulk_transfer(FP_DEV(dev),
ssm,
EP_DATA,
img_data,
sizeof(struct uru4k_image),
image_transfer_cb,
NULL,
0);
fpi_ssm_start(ssm, imaging_complete);
return write_reg(dev, REG_MODE, MODE_CAPTURE,