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Diffstat (limited to 'include/fpsensor.h')
| -rw-r--r-- | include/fpsensor.h | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/include/fpsensor.h b/include/fpsensor.h deleted file mode 100644 index 2c5baa2679..0000000000 --- a/include/fpsensor.h +++ /dev/null @@ -1,168 +0,0 @@ -/* Copyright 2017 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* Fingerprint sensor interface */ - -#ifndef __CROS_EC_FPSENSOR_H -#define __CROS_EC_FPSENSOR_H - -#include <stdint.h> -#include "common.h" -#include "ec_commands.h" - -#ifndef SPI_FP_DEVICE -#define SPI_FP_DEVICE (&spi_devices[0]) -#endif - -/* Four-character-code */ -#define FOURCC(a, b, c, d) ((uint32_t)(a) | ((uint32_t)(b) << 8) | \ - ((uint32_t)(c) << 16) | ((uint32_t)(d) << 24)) - -/* 8-bit greyscale pixel format as defined by V4L2 headers */ -#define V4L2_PIX_FMT_GREY FOURCC('G', 'R', 'E', 'Y') - -/* --- functions provided by the sensor-specific driver --- */ - -/* Initialize the connected sensor hardware and put it in a low power mode. */ -int fp_sensor_init(void); - -/* De-initialize the sensor hardware. */ -int fp_sensor_deinit(void); - -/* - * Fill the 'ec_response_fp_info' buffer with the sensor information - * as required by the EC_CMD_FP_INFO host command. - * - * Put both the static information and the ones read from the sensor at runtime. - */ -int fp_sensor_get_info(struct ec_response_fp_info *resp); - -/* - * Put the sensor in its lowest power state. - * - * fp_sensor_configure_detect needs to be called to restore finger detection - * functionality. - */ -void fp_sensor_low_power(void); - -/* - * Configure finger detection. - * - * Send the settings to the sensor, so it is properly configured to detect - * the presence of a finger. - */ -void fp_sensor_configure_detect(void); - -/* - * Returns the status of the finger on the sensor. - * (assumes fp_sensor_configure_detect was called before) - */ -enum finger_state { - FINGER_NONE = 0, - FINGER_PARTIAL = 1, - FINGER_PRESENT = 2, -}; -enum finger_state fp_sensor_finger_status(void); - -/* - * Acquires a fingerprint image. - * - * This function is called once the finger has been detected and cover enough - * area of the sensor (ie fp_sensor_finger_status returned FINGER_PRESENT). - * It does the acquisition immediately. - * The image_data parameter points to an image data buffer of size - * - * FP_SENSOR_IMAGE_SIZE allocated by the caller. - * Returns: - * - 0 on success - * - negative value on error - * - FP_SENSOR_LOW_IMAGE_QUALITY on image captured but quality is too low - * - FP_SENSOR_TOO_FAST on finger removed before image was captured - * - FP_SENSOR_LOW_SENSOR_COVERAGE on sensor not fully covered by finger - */ -#define FP_SENSOR_LOW_IMAGE_QUALITY 1 -#define FP_SENSOR_TOO_FAST 2 -#define FP_SENSOR_LOW_SENSOR_COVERAGE 3 -int fp_sensor_acquire_image(uint8_t *image_data); - -/* - * Acquires a fingerprint image with specific capture mode. - * - * Same as the fp_sensor_acquire_image function above, - * excepted 'mode' can be set to one of the FP_CAPTURE_ constants - * to get a specific image type (e.g. a pattern) rather than the default one. - */ -int fp_sensor_acquire_image_with_mode(uint8_t *image_data, int mode); - -/* - * Compares given finger image against enrolled templates. - * - * The matching algorithm can update the template with additional biometric data - * from the image, if it chooses to do so. - * - * @param templ a pointer to the array of template buffers. - * @param templ_count the number of buffers in the array of templates. - * @param image the buffer containing the finger image - * @param match_index index of the matched finger in the template array if any. - * @param update_bitmap contains one bit per template, the bit is set if the - * match has updated the given template. - * @return negative value on error, else one of the following code : - * - EC_MKBP_FP_ERR_MATCH_NO on non-match - * - EC_MKBP_FP_ERR_MATCH_YES for match when template was not updated with - * new data - * - EC_MKBP_FP_ERR_MATCH_YES_UPDATED for match when template was updated - * - EC_MKBP_FP_ERR_MATCH_YES_UPDATE_FAILED match, but update failed (not saved) - * - EC_MKBP_FP_ERR_MATCH_LOW_QUALITY when matching could not be performed due - * to low image quality - * - EC_MKBP_FP_ERR_MATCH_LOW_COVERAGE when matching could not be performed - * due to finger covering too little area of the sensor - */ -int fp_finger_match(void *templ, uint32_t templ_count, uint8_t *image, - int32_t *match_index, uint32_t *update_bitmap); - -/* - * Start a finger enrollment session. - * - * @return 0 on success or a negative error code. - */ -int fp_enrollment_begin(void); - -/* - * Generate a template from the finger whose enrollment has just being - * completed. - * - * @param templ the buffer which will receive the template. - * templ can be set to NULL to abort the current enrollment process. - * - * @return 0 on success or a negative error code. - */ -int fp_enrollment_finish(void *templ); - -/* - * Adds fingerprint image to the current enrollment session. - * - * @return a negative value on error or one of the following codes: - * - EC_MKBP_FP_ERR_ENROLL_OK when image was successfully enrolled - * - EC_MKBP_FP_ERR_ENROLL_IMMOBILE when image added, but user should be - * advised to move finger - * - EC_MKBP_FP_ERR_ENROLL_LOW_QUALITY when image could not be used due to low - * image quality - * - EC_MKBP_FP_ERR_ENROLL_LOW_COVERAGE when image could not be used due to - * finger covering too little area of the sensor - */ -int fp_finger_enroll(uint8_t *image, int *completion); - -/** - * Runs a test for defective pixels. - * - * Should be triggered periodically by the client. The maintenance command can - * take several hundred milliseconds to run. - * - * @return EC_ERROR_HW_INTERNAL on error (such as finger on sensor) - * @return EC_SUCCESS on success - */ -int fp_maintenance(void); - -#endif /* __CROS_EC_FPSENSOR_H */ |