diff options
Diffstat (limited to 'driver/fingerprint/elan/elan_sensor_pal.c')
| -rw-r--r-- | driver/fingerprint/elan/elan_sensor_pal.c | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/driver/fingerprint/elan/elan_sensor_pal.c b/driver/fingerprint/elan/elan_sensor_pal.c deleted file mode 100644 index b59368b835..0000000000 --- a/driver/fingerprint/elan/elan_sensor_pal.c +++ /dev/null @@ -1,253 +0,0 @@ -/* Copyright 2021 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. - */ -/* ELAN Platform Abstraction Layer callbacks */ - -#include <stddef.h> -#include "common.h" -#include "console.h" -#include "endian.h" -#include "fpsensor.h" -#include "gpio.h" -#include "link_defs.h" -#include "spi.h" -#include "system.h" -#include "timer.h" -#include "util.h" -#include "shared_mem.h" -#include "math_util.h" -#include "cryptoc/util.h" - -#include "elan_setting.h" -#include "elan_sensor.h" -#include "elan_sensor_pal.h" - -static uint8_t tx_buf[CONFIG_SPI_TX_BUF_SIZE] __uncached; -static uint8_t rx_buf[CONFIG_SPI_RX_BUF_SIZE] __uncached; - -int elan_write_cmd(uint8_t fp_cmd) -{ - int rc = 0; - - memset(tx_buf, 0, CONFIG_SPI_TX_BUF_SIZE); - memset(rx_buf, 0, CONFIG_SPI_RX_BUF_SIZE); - - tx_buf[0] = fp_cmd; - rc = spi_transaction(&spi_devices[0], tx_buf, 2, rx_buf, - SPI_READBACK_ALL); - return rc; -} - -int elan_read_cmd(uint8_t fp_cmd, uint8_t *regdata) -{ - int ret = 0; - - memset(tx_buf, 0, CONFIG_SPI_TX_BUF_SIZE); - memset(rx_buf, 0, CONFIG_SPI_RX_BUF_SIZE); - - tx_buf[0] = fp_cmd; /* one byte data read */ - ret = spi_transaction(&spi_devices[0], tx_buf, 2, rx_buf, - SPI_READBACK_ALL); - *regdata = rx_buf[1]; - - return ret; -} - -int elan_spi_transaction(uint8_t *tx, int tx_len, uint8_t *rx, int rx_len) -{ - int ret = 0; - - memset(tx_buf, 0, CONFIG_SPI_TX_BUF_SIZE); - memset(rx_buf, 0, CONFIG_SPI_RX_BUF_SIZE); - - memcpy(tx_buf, tx, tx_len); - ret = spi_transaction(&spi_devices[0], tx_buf, tx_len, rx_buf, rx_len); - memcpy(rx, rx_buf, rx_len); - - return ret; -} - -int elan_write_register(uint8_t regaddr, uint8_t regdata) -{ - int ret = 0; - - memset(tx_buf, 0, CONFIG_SPI_TX_BUF_SIZE); - memset(rx_buf, 0, CONFIG_SPI_RX_BUF_SIZE); - - tx_buf[0] = WRITE_REG_HEAD + regaddr; /* one byte data write */ - tx_buf[1] = regdata; - ret = spi_transaction(&spi_devices[0], tx_buf, 2, rx_buf, - SPI_READBACK_ALL); - return ret; -} - -int elan_write_page(uint8_t page) -{ - int ret = 0; - - memset(tx_buf, 0, CONFIG_SPI_TX_BUF_SIZE); - memset(rx_buf, 0, CONFIG_SPI_RX_BUF_SIZE); - - tx_buf[0] = PAGE_SEL; - tx_buf[1] = page; - ret = spi_transaction(&spi_devices[0], tx_buf, 2, rx_buf, - SPI_READBACK_ALL); - - return ret; -} - -int elan_write_reg_vector(const uint8_t *reg_table, int length) -{ - int ret = 0; - int i = 0; - uint8_t write_regaddr; - uint8_t write_regdata; - - for (i = 0; i < length; i = i + 2) { - write_regaddr = reg_table[i]; - write_regdata = reg_table[i + 1]; - ret = elan_write_register(write_regaddr, write_regdata); - if (ret < 0) - break; - } - return ret; -} - -int raw_capture(uint16_t *short_raw) -{ - int ret = 0, i = 0, image_index = 0, index = 0; - int cnt_timer = 0; - int dma_loop = 0, dma_len = 0; - uint8_t regdata[4] = { 0 }; - char *img_buf; - - memset(short_raw, 0, sizeof(uint16_t) * IMAGE_TOTAL_PIXEL); - - ret = shared_mem_acquire(sizeof(uint8_t) * IMG_BUF_SIZE, &img_buf); - if (ret) { - LOGE_SA("%s Can't get shared mem\n", __func__); - return ret; - } - memset(img_buf, 0, sizeof(uint8_t) * IMG_BUF_SIZE); - - /* Write start scans command to fp sensor */ - if (elan_write_cmd(START_SCAN) < 0) { - ret = ELAN_ERROR_SPI; - LOGE_SA("%s SPISendCommand( SSP2, START_SCAN ) fail ret = %d", - __func__, ret); - goto exit; - } - - /* Polling scan status */ - cnt_timer = 0; - while (1) { - usleep(1000); - cnt_timer++; - regdata[0] = SENSOR_STATUS; - elan_spi_transaction(regdata, 2, regdata, 2); - if (regdata[0] & 0x04) - break; - - if (cnt_timer > POLLING_SCAN_TIMER) { - ret = ELAN_ERROR_SCAN; - LOGE_SA("%s regdata = 0x%x, fail ret = %d", __func__, - regdata[0], ret); - goto exit; - } - } - - /* Read the image from fp sensor */ - dma_loop = 4; - dma_len = IMG_BUF_SIZE / dma_loop; - - for (i = 0; i < dma_loop; i++) { - memset(tx_buf, 0, CONFIG_SPI_TX_BUF_SIZE); - memset(rx_buf, 0, CONFIG_SPI_RX_BUF_SIZE); - tx_buf[0] = START_READ_IMAGE; - ret = spi_transaction(&spi_devices[0], tx_buf, 2, rx_buf, - dma_len); - memcpy(&img_buf[dma_len * i], rx_buf, dma_len); - } - - /* Remove dummy byte */ - for (image_index = 1; image_index < IMAGE_WIDTH; image_index++) - memcpy(&img_buf[RAW_PIXEL_SIZE * image_index], - &img_buf[RAW_DATA_SIZE * image_index], RAW_PIXEL_SIZE); - - for (index = 0; index < IMAGE_TOTAL_PIXEL; index++) - short_raw[index] = - (img_buf[index * 2] << 8) + img_buf[index * 2 + 1]; - -exit: - if (img_buf != NULL) { - always_memset(img_buf, 0, sizeof(uint8_t) * IMG_BUF_SIZE); - shared_mem_release(img_buf); - } - - if (ret != 0) - LOGE_SA("%s error = %d", __func__, ret); - - return ret; -} - -int elan_execute_calibration(void) -{ - int retry_time = 0; - int ret = 0; - - while (retry_time < REK_TIMES) { - elan_write_cmd(SRST); - elan_write_cmd(FUSE_LOAD); - register_initialization(); - elan_sensing_mode(); - - ret = calibration(); - if (ret == 0) - break; - - retry_time++; - } - - return ret; -} - -int elan_fp_maintenance(uint16_t *error_state) -{ - int rv; - fp_sensor_info_t sensor_info; - timestamp_t start = get_time(); - - if (error_state == NULL) - return EC_ERROR_INVAL; - - /* Initial status */ - *error_state &= 0xFC00; - sensor_info.num_defective_pixels = 0; - sensor_info.sensor_error_code = 0; - rv = fp_sensor_maintenance(&sensor_info); - LOGE_SA("Maintenance took %d ms", time_since32(start) / MSEC); - - if (rv != 0) { - /* - * Failure can occur if any of the fingerprint detection zones - * are covered (i.e., finger is on sensor). - */ - LOGE_SA("Failed to run maintenance: %d", rv); - return EC_ERROR_HW_INTERNAL; - } - if (sensor_info.num_defective_pixels >= FP_ERROR_DEAD_PIXELS_UNKNOWN) - *error_state = FP_ERROR_DEAD_PIXELS_UNKNOWN; - else - *error_state |= - FP_ERROR_DEAD_PIXELS(sensor_info.num_defective_pixels); - LOGE_SA("num_defective_pixels: %d", sensor_info.num_defective_pixels); - LOGE_SA("sensor_error_code: %d", sensor_info.sensor_error_code); - - return EC_SUCCESS; -} - -void __unused elan_sensor_set_rst(bool state) -{ - gpio_set_level(GPIO_FP_RST_ODL, state ? 0 : 1); -} |