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elanspi: Add driver supporting various ELAN SPI sensors

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Closes: #339
This commit is contained in:
Matthew Mirvish 2021-03-29 21:11:54 -04:00 committed by Benjamin Berg
parent f6e80456d9
commit 019a294ec4
4 changed files with 2052 additions and 1 deletions
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1696
libfprint/drivers/elanspi.c Normal file
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351
libfprint/drivers/elanspi.h Normal file
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@ -0,0 +1,351 @@
/*
* Elan SPI driver for libfprint
*
* Copyright (C) 2021 Matthew Mirvish <matthew@mm12.xyz>
*
* 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
*/
#pragma once
#include <config.h>
#ifndef HAVE_UDEV
#error "elanspi requires udev"
#endif
#include <fp-device.h>
#include <fpi-device.h>
#define ELANSPI_TP_PID 0x04f3
/* Sensor ID information copied from the windows driver */
struct elanspi_sensor_entry
{
unsigned char sensor_id, height, width, ic_version;
gboolean is_otp_model;
const gchar * name;
};
static const struct elanspi_sensor_entry elanspi_sensor_table[] = {
{0x0, 0x78, 0x78, 0x0, 0x0, "eFSA120S"},
{0x1, 0x78, 0x78, 0x1, 0x1, "eFSA120SA"},
{0x2, 0xA0, 0xA0, 0x0, 0x0, "eFSA160S"},
{0x3, 0xd0, 0x50, 0x0, 0x0, "eFSA820R"},
{0x4, 0xC0, 0x38, 0x0, 0x0, "eFSA519R"},
{0x5, 0x60, 0x60, 0x0, 0x0, "eFSA96S"},
{0x6, 0x60, 0x60, 0x1, 0x1, "eFSA96SA"},
{0x7, 0x60, 0x60, 0x2, 0x1, "eFSA96SB"},
{0x8, 0xa0, 0x50, 0x1, 0x1, "eFSA816RA"},
{0x9, 0x90, 0x40, 0x1, 0x1, "eFSA614RA"},
{0xA, 0x90, 0x40, 0x2, 0x1, "eFSA614RB"},
{0xB, 0x40, 0x58, 0x1, 0x1, "eFSA688RA"},
{0xC, 0x50, 0x50, 0x1, 0x0, "eFSA80SA"},
{0xD, 0x47, 0x80, 0x1, 0x1, "eFSA712RA"},
{0xE, 0x50, 0x50, 0x2, 0x0, "eFSA80SC"},
{0, 0, 0, 0, 0, NULL}
};
struct elanspi_reg_entry
{
unsigned char addr, value;
/* terminates with 0xFF, 0xFF since register 0x0 is valid */
};
struct elanspi_regtable
{
const struct elanspi_reg_entry *other;
struct
{
unsigned char sid;
const struct elanspi_reg_entry *table;
} entries[];
};
static const struct elanspi_reg_entry elanspi_calibration_table_default[] = {
{0x05, 0x60},
{0x06, 0xc0},
{0x07, 0x80},
{0x08, 0x04},
{0x0a, 0x97},
{0x0b, 0x72},
{0x0c, 0x69},
{0x0f, 0x2a},
{0x11, 0x2a},
{0x13, 0x27},
{0x15, 0x67},
{0x18, 0x04},
{0x21, 0x20},
{0x22, 0x36},
{0x2a, 0x5f},
{0x2b, 0xc0},
{0x2e, 0xff},
{0xff, 0xff}
};
static const struct elanspi_reg_entry elanspi_calibration_table_id567[] = {
{0x2A, 0x07},
{0x5, 0x60},
{0x6, 0xC0},
{0x7, 0x80},
{0x8, 0x04},
{0xA, 0x97},
{0xB, 0x72},
{0xC, 0x69},
{0xF, 0x2A},
{0x11, 0x2A},
{0x13, 0x27},
{0x15, 0x67},
{0x18, 0x04},
{0x21, 0x20},
{0x22, 0x36},
{0x2A, 0x5F},
{0x2B, 0xC0},
{0x2E, 0xFF},
{0xff, 0xff}
};
static const struct elanspi_reg_entry elanspi_calibration_table_id0[] = {
{0x5, 0x60},
{0x6, 0xC0},
{0x8, 0x04},
{0xA, 0x97},
{0xB, 0x72},
{0xC, 0x69},
{0xF, 0x2B},
{0x11, 0x2B},
{0x13, 0x28},
{0x15, 0x28},
{0x18, 0x04},
{0x21, 0x20},
{0x2A, 0x4B},
{0xff, 0xff}
};
// old style sensor calibration, with only one page of registers
static const struct elanspi_regtable elanspi_calibration_table_old = {
.other = elanspi_calibration_table_default,
.entries = {
{ .sid = 0x0, .table = elanspi_calibration_table_id0 },
{ .sid = 0x5, .table = elanspi_calibration_table_id567 },
{ .sid = 0x6, .table = elanspi_calibration_table_id567 },
{ .sid = 0x7, .table = elanspi_calibration_table_id567 },
{ .sid = 0x0, .table = NULL }
}
};
// new style sensor calibration, with two pages of registers
static const struct elanspi_reg_entry elanspi_calibration_table_page0_id14[] = {
{0x00, 0x5a},
{0x01, 0x00},
{0x02, 0x4f},
{0x03, 0x00},
{0x04, 0x4f},
{0x05, 0xa0},
{0x06, 0x00},
{0x07, 0x00},
{0x08, 0x00},
{0x09, 0x04},
{0x0a, 0x74},
{0x0b, 0x05},
{0x0c, 0x08},
{0x0d, 0x00},
{0x0e, 0x00},
{0x0f, 0x14},
{0x10, 0x3c},
{0x11, 0x41},
{0x12, 0x0c},
{0x13, 0x00},
{0x14, 0x00},
{0x15, 0x04},
{0x16, 0x02},
{0x17, 0x00},
{0x18, 0x01},
{0x19, 0xf4},
{0x1a, 0x00},
{0x1b, 0x00},
{0x1c, 0x00},
{0x1d, 0x00},
{0x1e, 0x00},
{0x1f, 0x00},
{0x20, 0x00},
{0x21, 0x80},
{0x22, 0x06},
{0x23, 0x00},
{0x24, 0x00},
{0x25, 0x00},
{0x26, 0x00},
{0x27, 0x00},
{0x28, 0x00},
{0x29, 0x04},
{0x2a, 0x5f},
{0x2b, 0xe2},
{0x2c, 0xa0},
{0x2d, 0x00},
{0x2e, 0xff},
{0x2f, 0x40},
{0x30, 0x01},
{0x31, 0x38},
{0x32, 0x00},
{0x33, 0x00},
{0x34, 0x00},
{0x35, 0x1f},
{0x36, 0xff},
{0x37, 0x00},
{0x38, 0x00},
{0x39, 0x00},
{0x3a, 0x00},
{0xff, 0xff}
};
static const struct elanspi_reg_entry elanspi_calibration_table_page1_id14[] = {
{0x00, 0x7b},
{0x01, 0x7f},
{0x02, 0x77},
{0x03, 0xd4},
{0x04, 0x7d},
{0x05, 0x19},
{0x06, 0x80},
{0x07, 0x40},
{0x08, 0x11},
{0x09, 0x00},
{0x0a, 0x00},
{0x0b, 0x14},
{0x0c, 0x00},
{0x0d, 0x00},
{0x0e, 0x32},
{0x0f, 0x02},
{0x10, 0x08},
{0x11, 0x6c},
{0x12, 0x00},
{0x13, 0x00},
{0x14, 0x32},
{0x15, 0x01},
{0x16, 0x16},
{0x17, 0x01},
{0x18, 0x14},
{0x19, 0x01},
{0x1a, 0x16},
{0x1b, 0x01},
{0x1c, 0x17},
{0x1d, 0x01},
{0x1e, 0x0a},
{0x1f, 0x01},
{0x20, 0x0a},
{0x21, 0x02},
{0x22, 0x08},
{0x23, 0x29},
{0x24, 0x00},
{0x25, 0x0c},
{0x26, 0x1a},
{0x27, 0x30},
{0x28, 0x1a},
{0x29, 0x30},
{0x2a, 0x00},
{0x2b, 0x00},
{0x2c, 0x01},
{0x2d, 0x16},
{0x2e, 0x01},
{0x2f, 0x17},
{0x30, 0x03},
{0x31, 0x2d},
{0x32, 0x03},
{0x33, 0x2d},
{0x34, 0x14},
{0x35, 0x00},
{0x36, 0x00},
{0x37, 0x00},
{0x38, 0x00},
{0x39, 0x03},
{0x3a, 0xfe},
{0x3b, 0x00},
{0x3c, 0x00},
{0x3d, 0x02},
{0x3e, 0x00},
{0x3f, 0x00},
{0xff, 0xff}
};
static const struct elanspi_regtable elanspi_calibration_table_new_page0 = {
.other = NULL,
.entries = {
{ .sid = 0xe, .table = elanspi_calibration_table_page0_id14 },
{ .sid = 0x0, .table = NULL }
}
};
static const struct elanspi_regtable elanspi_calibration_table_new_page1 = {
.other = NULL,
.entries = {
{ .sid = 0xe, .table = elanspi_calibration_table_page1_id14 },
{ .sid = 0x0, .table = NULL }
}
};
#define ELANSPI_NO_ROTATE 0
#define ELANSPI_90LEFT_ROTATE 1
#define ELANSPI_180_ROTATE 2
#define ELANSPI_90RIGHT_ROTATE 3
#define ELANSPI_HV_FLIPPED 1
#define ELANSPI_UDEV_TYPES FPI_DEVICE_UDEV_SUBTYPE_SPIDEV | FPI_DEVICE_UDEV_SUBTYPE_HIDRAW
#define ELANSPI_TP_VID 0x04f3
// using checkargs ACPI:HIDPID
static const FpIdEntry elanspi_id_table[] = {
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x3057}, .driver_data = ELANSPI_180_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x3087}, .driver_data = ELANSPI_180_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x30c6}, .driver_data = ELANSPI_180_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN70A1", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x3134}, .driver_data = ELANSPI_90LEFT_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x3148}, .driver_data = ELANSPI_180_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x30b2}, .driver_data = ELANSPI_NO_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN70A1", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x30b2}, .driver_data = ELANSPI_NO_ROTATE},
{.udev_types = ELANSPI_UDEV_TYPES, .spi_acpi_id = "ELAN7001", .hid_id = {.vid = ELANSPI_TP_VID, .pid = 0x309f}, .driver_data = ELANSPI_180_ROTATE},
{.udev_types = 0}
};
#define ELANSPI_MAX_OLD_STAGE1_CALIBRATION_MEAN 1000
#define ELANSPI_MIN_OLD_STAGE2_CALBIRATION_MEAN 3000
#define ELANSPI_MAX_OLD_STAGE2_CALBIRATION_MEAN 8000
#define ELANSPI_HV_CALIBRATION_TARGET_MEAN 3000
#define ELANSPI_MIN_EMPTY_INVALID_PERCENT 6
#define ELANSPI_MAX_REAL_INVALID_PERCENT 3
#define ELANSPI_MIN_REAL_STDDEV (592 * 592)
#define ELANSPI_MAX_EMPTY_STDDEV (350 * 350)
#define ELANSPI_MIN_FRAMES_DEBOUNCE 2
#define ELANSPI_SWIPE_FRAMES_DISCARD 1
#define ELANSPI_MIN_FRAMES_SWIPE (7 + ELANSPI_SWIPE_FRAMES_DISCARD)
#define ELANSPI_MAX_FRAMES_SWIPE (20 + ELANSPI_SWIPE_FRAMES_DISCARD)
#define ELANSPI_MAX_FRAME_HEIGHT 43
#define ELANSPI_MIN_FRAME_TO_FRAME_DIFF (250 * 250)
#define ELANSPI_HV_SENSOR_FRAME_DELAY 23
#define ELANSPI_OTP_TIMEOUT_USEC (12 * 1000)
#define ELANSPI_OLD_CAPTURE_TIMEOUT_USEC (100 * 1000)
#define ELANSPI_HV_CAPTURE_TIMEOUT_USEC (50 * 1000)

3
libfprint/meson.build
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@ -157,6 +157,9 @@ foreach driver: drivers
if driver == 'elan'
drivers_sources += [ 'drivers/elan.c' ]
endif
if driver == 'elanspi'
drivers_sources += [ 'drivers/elanspi.c' ]
endif
if driver == 'virtual_image'
drivers_sources += [ 'drivers/virtual-image.c' ]
endif

3
meson.build
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@ -99,6 +99,7 @@ virtual_drivers = [
]
udev_drivers = [
'elanspi'
]
default_drivers = [
@ -174,7 +175,7 @@ foreach driver: drivers
error('NSS is required for the URU4000/URU4500 driver')
endif
endif
if driver == 'aes3500' or driver == 'aes4000'
if driver == 'aes3500' or driver == 'aes4000' or driver == 'elanspi'
imaging_dep = dependency('pixman-1', required: false)
if not imaging_dep.found()
error('pixman is required for imaging support')