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fpc1020_common.c
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fpc1020_common.c
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/* FPC1020 Touch sensor driver
*
* Copyright (c) 2013,2014 Fingerprint Cards AB <tech@fingerprints.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License Version 2
* as published by the Free Software Foundation.
*/
#define DEBUG
#include <linux/gpio.h>
#include <linux/interrupt.h>
#ifndef CONFIG_OF
#include <linux/spi/fpc1020_common.h>
#include <linux/spi/fpc1020_regs.h>
#include <linux/spi/fpc1020_capture.h>
#include <linux/spi/fpc1020_regulator.h>
#else
#include "fpc1020_common.h"
#include "fpc1020_regs.h"
#include "fpc1020_capture.h"
#include "fpc1020_regulator.h"
#endif
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
const bool target_little_endian = true;
#else
#warning BE target not tested!
const bool target_little_endian = false;
#endif
/* -------------------------------------------------------------------- */
/* fpc1020 data types */
/* -------------------------------------------------------------------- */
struct chip_struct {
fpc1020_chip_t type;
u16 hwid;
u8 revision;
u8 pixel_rows;
u8 pixel_columns;
u8 adc_group_size;
};
/* -------------------------------------------------------------------- */
/* fpc1020 driver constants */
/* -------------------------------------------------------------------- */
#define FPC1150_ROWS 208u
#define FPC1150_COLUMNS 80u
#define FPC1021_ROWS 160u
#define FPC1021_COLUMNS 160u
#define FPC1020_ROWS 192u
#define FPC1020_COLUMNS 192u
#define FPC102X_ADC_GROUP_SIZE 8u
#define FPC1020_EXT_HWID_CHECK_ID1020A_ROWS 5u
static const char *chip_text[] = {
"N/A", /* FPC1020_CHIP_NONE */
"fpc1020a", /* FPC1020_CHIP_1020A */
"fpc1021a", /* FPC1020_CHIP_1021A */
"fpc1021b", /* FPC1020_CHIP_1021B */
"fpc1150a", /* FPC1020_CHIP_1150A */
"fpc1150b", /* FPC1020_CHIP_1150B */
"fpc1150f" /* FPC1020_CHIP_1150F */
};
static const struct chip_struct chip_data[] = {
{FPC1020_CHIP_1020A, 0x020a, 0, FPC1020_ROWS, FPC1020_COLUMNS, FPC102X_ADC_GROUP_SIZE},
{FPC1020_CHIP_1021A, 0x021a, 2, FPC1021_ROWS, FPC1021_COLUMNS, FPC102X_ADC_GROUP_SIZE},
{FPC1020_CHIP_1021B, 0x021b, 1, FPC1021_ROWS, FPC1021_COLUMNS, FPC102X_ADC_GROUP_SIZE},
{FPC1020_CHIP_1150A, 0x150a, 1, FPC1150_ROWS, FPC1150_COLUMNS, FPC102X_ADC_GROUP_SIZE},
{FPC1020_CHIP_1150B, 0x150b, 1, FPC1150_ROWS, FPC1150_COLUMNS, FPC102X_ADC_GROUP_SIZE},
{FPC1020_CHIP_1150F, 0x150f, 1, FPC1150_ROWS, FPC1150_COLUMNS, FPC102X_ADC_GROUP_SIZE},
{FPC1020_CHIP_NONE, 0,0,0,0,0}
};
const fpc1020_setup_t fpc1020_setup_default_1020_a1a2 = {
.adc_gain = {0, 0, 1, 1},
.adc_shift = {1, 2, 1, 1},
.pxl_ctrl = {0x1b, 0x1f, 0x0b, 0x0b},
.capture_settings_mux = 0,
.capture_count = 1,
.capture_mode = FPC1020_MODE_WAIT_AND_CAPTURE,
.capture_row_start = 0,
.capture_row_count = FPC1020_ROWS,
.capture_col_start = 0,
.capture_col_groups = FPC1020_COLUMNS / FPC102X_ADC_GROUP_SIZE,
.capture_finger_up_threshold = 0,
.capture_finger_down_threshold = 6,
.finger_detect_threshold = 0x50,
.wakeup_detect_rows = {92, 92},
.wakeup_detect_cols = {64, 120},
};
const fpc1020_setup_t fpc1020_setup_default_1020_a3a4 = {
.adc_gain = {2, 2, 2, 2},
.adc_shift = {10, 10, 10, 10},
.pxl_ctrl = {0x1e, 0x0e, 0x0a, 0x0a},
.capture_settings_mux = 0,
.capture_count = 1,
.capture_mode = FPC1020_MODE_WAIT_AND_CAPTURE,
.capture_row_start = 0,
.capture_row_count = FPC1020_ROWS,
.capture_col_start = 0,
.capture_col_groups = FPC1020_COLUMNS / FPC102X_ADC_GROUP_SIZE,
.capture_finger_up_threshold = 0,
.capture_finger_down_threshold = 6,
.finger_detect_threshold = 0x50,
.wakeup_detect_rows = {92, 92},
.wakeup_detect_cols = {64, 120},
};
const fpc1020_setup_t fpc1020_setup_default_1021_a2b1 = {
.adc_gain = {2, 2, 2, 2},
.adc_shift = {10, 10, 10, 10},
.pxl_ctrl = {0x1e, 0x0e, 0x0a, 0x0a},
.capture_settings_mux = 0,
.capture_count = 1,
.capture_mode = FPC1020_MODE_WAIT_AND_CAPTURE,
.capture_row_start = 0,
.capture_row_count = FPC1021_ROWS,
.capture_col_start = 0,
.capture_col_groups = FPC1021_COLUMNS / FPC102X_ADC_GROUP_SIZE,
.capture_finger_up_threshold = 0,
.capture_finger_down_threshold = 6,
.finger_detect_threshold = 0x50,
.wakeup_detect_rows = {76, 76},
.wakeup_detect_cols = {56, 88},
};
const fpc1020_setup_t fpc1020_setup_default_1150_a1b1f1 = {
.adc_gain = {2, 2, 2, 2},
.adc_shift = {10, 10, 10, 10},
.pxl_ctrl = {0x1e, 0x0e, 0x0a, 0x0a},
.capture_settings_mux = 0,
.capture_count = 1,
.capture_mode = FPC1020_MODE_WAIT_AND_CAPTURE,
.capture_row_start = 0,
.capture_row_count = FPC1150_ROWS,
.capture_col_start = 0,
.capture_col_groups = FPC1150_COLUMNS / FPC102X_ADC_GROUP_SIZE,
.capture_finger_up_threshold = 0,
.capture_finger_down_threshold = 7,
.finger_detect_threshold = 0x50,
.wakeup_detect_rows = {72, 128},
.wakeup_detect_cols = {32, 32},
};
const fpc1020_diag_t fpc1020_diag_default = {
.selftest = 0,
.spi_register = 0,
.spi_regsize = 0,
.spi_data = 0,
};
/* -------------------------------------------------------------------- */
/* function prototypes */
/* -------------------------------------------------------------------- */
static int fpc1020_check_hw_id_extended(fpc1020_data_t *fpc1020);
static int fpc1020_hwid_1020a(fpc1020_data_t *fpc1020);
static int fpc1020_write_id_1020a_setup(fpc1020_data_t *fpc1020);
static int fpc1020_write_sensor_1020a_setup(fpc1020_data_t *fpc1020);
static int fpc1020_write_sensor_1020a_a1a2_setup(fpc1020_data_t *fpc1020);
static int fpc1020_write_sensor_1020a_a3a4_setup(fpc1020_data_t *fpc1020);
static int fpc1020_write_sensor_1021_setup(fpc1020_data_t *fpc1020);
static int fpc1020_write_sensor_1150_setup(fpc1020_data_t *fpc1020);
static int fpc1020_check_irq_after_reset(fpc1020_data_t *fpc1020);
static int fpc1020_flush_adc(fpc1020_data_t *fpc1020);
/* -------------------------------------------------------------------- */
/* function definitions */
/* -------------------------------------------------------------------- */
size_t fpc1020_calc_huge_buffer_minsize(fpc1020_data_t *fpc1020)
{
const size_t buff_min = FPC1020_EXT_HWID_CHECK_ID1020A_ROWS *
FPC1020_COLUMNS;
size_t buff_req;
buff_req = (fpc1020->chip.type == FPC1020_CHIP_NONE) ? buff_min :
(fpc1020->chip.pixel_columns *
fpc1020->chip.pixel_rows *
FPC1020_BUFFER_MAX_IMAGES);
return (buff_req > buff_min) ? buff_req : buff_min;
}
/* -------------------------------------------------------------------- */
int fpc1020_manage_huge_buffer(fpc1020_data_t *fpc1020, size_t new_size)
{
int error = 0;
int buffer_order_new, buffer_order_curr;
buffer_order_curr = get_order(fpc1020->huge_buffer_size);
buffer_order_new = get_order(new_size);
if (new_size == 0) {
if (fpc1020->huge_buffer) {
free_pages((unsigned long)fpc1020->huge_buffer,
buffer_order_curr);
fpc1020->huge_buffer = NULL;
}
fpc1020->huge_buffer_size = 0;
error = 0;
} else {
if (fpc1020->huge_buffer &&
(buffer_order_curr != buffer_order_new)) {
free_pages((unsigned long)fpc1020->huge_buffer,
buffer_order_curr);
fpc1020->huge_buffer = NULL;
}
if (fpc1020->huge_buffer == NULL)
{
fpc1020->huge_buffer =
(u8 *)__get_free_pages(GFP_KERNEL,
buffer_order_new);
fpc1020->huge_buffer_size = (fpc1020->huge_buffer) ?
(size_t)PAGE_SIZE << buffer_order_new : 0;
error = (fpc1020->huge_buffer_size == 0) ? -ENOMEM : 0;
}
}
if (error) {
dev_err(&fpc1020->spi->dev, "%s, failed %d\n",
__func__, error);
} else {
dev_info(&fpc1020->spi->dev, "%s, size=%d bytes\n",
__func__, (int)fpc1020->huge_buffer_size);
}
return error;
}
/* -------------------------------------------------------------------- */
int fpc1020_setup_defaults(fpc1020_data_t *fpc1020)
{
int error = 0;
const fpc1020_setup_t *ptr;
memcpy((void *)&fpc1020->diag,
(void *)&fpc1020_diag_default,
sizeof(fpc1020_diag_t));
switch (fpc1020->chip.type) {
case FPC1020_CHIP_1020A:
ptr = (fpc1020->chip.revision == 1) ? &fpc1020_setup_default_1020_a1a2 :
(fpc1020->chip.revision == 2) ? &fpc1020_setup_default_1020_a1a2 :
(fpc1020->chip.revision == 3) ? &fpc1020_setup_default_1020_a3a4 :
(fpc1020->chip.revision == 4) ? &fpc1020_setup_default_1020_a3a4 :
NULL;
break;
case FPC1020_CHIP_1021A:
ptr = (fpc1020->chip.revision == 2) ? &fpc1020_setup_default_1021_a2b1 :
NULL;
break;
case FPC1020_CHIP_1021B:
ptr = (fpc1020->chip.revision == 1) ? &fpc1020_setup_default_1021_a2b1 :
NULL;
break;
case FPC1020_CHIP_1150A:
case FPC1020_CHIP_1150B:
case FPC1020_CHIP_1150F:
ptr = (fpc1020->chip.revision == 1) ? &fpc1020_setup_default_1150_a1b1f1 :
NULL;
break;
default:
ptr = NULL;
break;
}
error = (ptr == NULL) ? -EINVAL : 0;
if (error)
goto out_err;
memcpy((void *)&fpc1020->setup, ptr, sizeof(fpc1020_setup_t));
dev_dbg(&fpc1020->spi->dev, "%s OK\n", __func__);
return 0;
out_err:
memset((void *)&fpc1020->setup, 0, sizeof(fpc1020_setup_t));
dev_err(&fpc1020->spi->dev, "%s FAILED %d\n", __func__, error);
return error;
}
/* -------------------------------------------------------------------- */
int fpc1020_gpio_reset(fpc1020_data_t *fpc1020)
{
int error = 0;
int counter = FPC1020_RESET_RETRIES;
while (counter) {
counter--;
gpio_set_value(fpc1020->reset_gpio, 1);
udelay(FPC1020_RESET_HIGH1_US);
gpio_set_value(fpc1020->reset_gpio, 0);
udelay(FPC1020_RESET_LOW_US);
gpio_set_value(fpc1020->reset_gpio, 1);
udelay(FPC1020_RESET_HIGH2_US);
error = gpio_get_value(fpc1020->irq_gpio) ? 0 : -EIO;
if (!error) {
printk(KERN_INFO "%s OK !\n", __func__);
counter = 0;
} else {
printk(KERN_INFO "%s timed out,retrying ...\n",
__func__);
udelay(1250);
}
}
return error;
}
/* -------------------------------------------------------------------- */
int fpc1020_spi_reset(fpc1020_data_t *fpc1020)
{
int error = 0;
int counter = FPC1020_RESET_RETRIES;
dev_dbg(&fpc1020->spi->dev, "%s\n", __func__);
while (counter) {
counter--;
error = fpc1020_cmd(fpc1020,
FPC1020_CMD_SOFT_RESET,
false);
if (error >= 0) {
error = fpc1020_wait_for_irq(fpc1020,
FPC1020_DEFAULT_IRQ_TIMEOUT_MS);
}
if (error >= 0) {
error = gpio_get_value(fpc1020->irq_gpio) ? 0 : -EIO;
if (!error) {
dev_dbg(&fpc1020->spi->dev,
"%s OK !\n", __func__);
counter = 0;
} else {
dev_dbg(&fpc1020->spi->dev,
"%s timed out,retrying ...\n",
__func__);
}
}
}
return error;
}
/* -------------------------------------------------------------------- */
int fpc1020_reset(fpc1020_data_t *fpc1020)
{
int error = 0;
dev_dbg(&fpc1020->spi->dev, "%s\n", __func__);
error = (fpc1020->soft_reset_enabled) ?
fpc1020_spi_reset(fpc1020) :
fpc1020_gpio_reset(fpc1020);
disable_irq(fpc1020->irq);
fpc1020->interrupt_done = false;
enable_irq(fpc1020->irq);
error = fpc1020_check_irq_after_reset(fpc1020);
if (error < 0)
goto out;
error = (gpio_get_value(fpc1020->irq_gpio) != 0) ? -EIO : 0;
if (error)
dev_err(&fpc1020->spi->dev, "IRQ pin, not low after clear.\n");
error = fpc1020_read_irq(fpc1020, true);
if (error != 0) {
dev_err(&fpc1020->spi->dev,
"IRQ register, expected 0x%x, got 0x%x.\n",
0,
(u8)error);
error = -EIO;
}
if (!error && (fpc1020->chip.type == FPC1020_CHIP_1020A))
error = fpc1020_flush_adc(fpc1020);
fpc1020->capture.available_bytes = 0;
fpc1020->capture.read_offset = 0;
fpc1020->capture.read_pending_eof = false;
out:
return error;
}
/* -------------------------------------------------------------------- */
int fpc1020_check_hw_id(fpc1020_data_t *fpc1020)
{
int error = 0;
u16 hardware_id;
fpc1020_reg_access_t reg;
int counter = 0;
bool match = false;
FPC1020_MK_REG_READ(reg, FPC102X_REG_HWID, &hardware_id);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
return error;
while (!match && chip_data[counter].type != FPC1020_CHIP_NONE) {
if (chip_data[counter].hwid == hardware_id)
match = true;
else
counter++;
}
if (match) {
fpc1020->chip.type = chip_data[counter].type;
fpc1020->chip.revision = chip_data[counter].revision;
fpc1020->chip.pixel_rows = chip_data[counter].pixel_rows;
fpc1020->chip.pixel_columns = chip_data[counter].pixel_columns;
fpc1020->chip.adc_group_size = chip_data[counter].adc_group_size;
if (fpc1020->chip.revision == 0) {
error = fpc1020_check_hw_id_extended(fpc1020);
if (error > 0) {
fpc1020->chip.revision = error;
error = 0;
}
}
dev_info(&fpc1020->spi->dev,
"Hardware id: 0x%x (%s, rev.%d) \n",
hardware_id,
chip_text[fpc1020->chip.type],
fpc1020->chip.revision);
} else {
dev_err(&fpc1020->spi->dev,
"Hardware id mismatch: got 0x%x\n", hardware_id);
fpc1020->chip.type = FPC1020_CHIP_NONE;
fpc1020->chip.revision = 0;
return -EIO;
}
return error;
}
/* -------------------------------------------------------------------- */
const char *fpc1020_hw_id_text(fpc1020_data_t *fpc1020)
{
return chip_text[fpc1020->chip.type];
}
/* -------------------------------------------------------------------- */
static int fpc1020_check_hw_id_extended(fpc1020_data_t *fpc1020)
{
int error = 0;
if (fpc1020->chip.revision != 0) {
return fpc1020->chip.revision;
}
error = (fpc1020->chip.type == FPC1020_CHIP_1020A) ?
fpc1020_hwid_1020a(fpc1020) : -EINVAL;
if (error < 0) {
dev_err(&fpc1020->spi->dev,
"%s, Unable to check chip revision %d\n",
__func__,error);
}
return (error < 0) ? error : fpc1020->chip.revision;
}
/* -------------------------------------------------------------------- */
static int fpc1020_hwid_1020a(fpc1020_data_t *fpc1020)
{
int error = 0;
int xpos, ypos, m1, m2, count;
const int num_rows = FPC1020_EXT_HWID_CHECK_ID1020A_ROWS;
const int num_pixels = 32;
const size_t image_size = num_rows * fpc1020->chip.pixel_columns;
dev_dbg(&fpc1020->spi->dev, "%s\n", __func__);
if (fpc1020->chip.type != FPC1020_CHIP_1020A)
return -EINVAL;
error = fpc1020_write_id_1020a_setup(fpc1020);
if (error)
goto out_err;
error = fpc1020_capture_set_crop(fpc1020,
0,
fpc1020->chip.pixel_columns / fpc1020->chip.adc_group_size,
0,
num_rows);
if (error)
goto out_err;
error = fpc1020_capture_buffer(fpc1020,
fpc1020->huge_buffer,
0,
image_size);
if (error)
goto out_err;
m1 = m2 = count = 0;
for (ypos = 1; ypos < num_rows; ypos++) {
for (xpos = 0; xpos < num_pixels; xpos++) {
m1 += fpc1020->huge_buffer
[(ypos * fpc1020->chip.pixel_columns) + xpos];
m2 += fpc1020->huge_buffer
[(ypos * fpc1020->chip.pixel_columns) +
(fpc1020->chip.pixel_columns - 1 - xpos)];
count++;
}
}
m1 /= count;
m2 /= count;
if (fpc1020_check_in_range_u64(m1, 181, 219) &&
fpc1020_check_in_range_u64(m2, 101, 179))
{
fpc1020->chip.revision = 1;
}
else if (fpc1020_check_in_range_u64(m1, 181, 219) &&
fpc1020_check_in_range_u64(m2, 181, 219))
{
fpc1020->chip.revision = 2;
}
else if (fpc1020_check_in_range_u64(m1, 101, 179) &&
fpc1020_check_in_range_u64(m2, 151, 179))
{
fpc1020->chip.revision = 3;
}
else if (fpc1020_check_in_range_u64(m1, 0, 99) &&
fpc1020_check_in_range_u64(m2, 0, 99))
{
fpc1020->chip.revision = 4;
}
else
{
fpc1020->chip.revision = 0;
}
dev_dbg(&fpc1020->spi->dev, "%s m1,m2 = %d,%d %s rev=%d \n", __func__,
m1, m2,
(fpc1020->chip.revision == 0) ? "UNKNOWN!" : "detected",
fpc1020->chip.revision);
out_err:
return error;
}
/* -------------------------------------------------------------------- */
static int fpc1020_write_id_1020a_setup(fpc1020_data_t *fpc1020)
{
int error = 0;
u8 temp_u8;
u16 temp_u16;
fpc1020_reg_access_t reg;
temp_u16 = 15 << 8;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_ADC_SHIFT_GAIN, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = 0xffff;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_TST_COL_PATTERN_EN, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = 0x04;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_CONF, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
out:
return error;
}
/* -------------------------------------------------------------------- */
int fpc1020_write_sensor_setup(fpc1020_data_t *fpc1020)
{
switch (fpc1020->chip.type)
{
case FPC1020_CHIP_1020A:
return fpc1020_write_sensor_1020a_setup(fpc1020);
case FPC1020_CHIP_1021A:
case FPC1020_CHIP_1021B:
return fpc1020_write_sensor_1021_setup(fpc1020);
case FPC1020_CHIP_1150A:
case FPC1020_CHIP_1150B:
case FPC1020_CHIP_1150F:
return fpc1020_write_sensor_1150_setup(fpc1020);
default:
break;
}
return -EINVAL;
}
/* -------------------------------------------------------------------- */
static int fpc1020_write_sensor_1020a_setup(fpc1020_data_t *fpc1020)
{
switch (fpc1020->chip.revision)
{
case 1:
case 2:
return fpc1020_write_sensor_1020a_a1a2_setup(fpc1020);
case 3:
case 4:
return fpc1020_write_sensor_1020a_a3a4_setup(fpc1020);
default:
break;
}
return -EINVAL;
}
/* -------------------------------------------------------------------- */
static int fpc1020_write_sensor_1020a_a1a2_setup(fpc1020_data_t *fpc1020)
{
int error = 0;
u8 temp_u8;
u16 temp_u16;
u32 temp_u32;
u64 temp_u64;
fpc1020_reg_access_t reg;
const int mux = FPC1020_MAX_ADC_SETTINGS - 1;
const int rev = fpc1020->chip.revision;
dev_dbg(&fpc1020->spi->dev, "%s %d\n", __func__, mux);
if ((rev != 1) && (rev != 2))
return -EINVAL;
temp_u64 = (rev == 1) ? 0x363636363f3f3f3f : 0x141414141e1e1e1e;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_SAMPLE_PX_DLY, &temp_u64);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = (rev == 1) ? 0x33 : 0x0f;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_PXL_RST_DLY, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = (rev == 1) ? 0x37 : 0x15;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_DLY, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u64 = 0x5540003f24;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_ADC_SETUP, &temp_u64);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u32 = 0x00080000;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_ANA_TEST_MUX, &temp_u32);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u64 = 0x5540003f34;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_ADC_SETUP, &temp_u64);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = (fpc1020->vddtx_mv > 0) ? 0x02 : /* external supply */
(fpc1020->txout_boost) ? 0x22 : 0x12; /* internal supply */
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_CONF, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = fpc1020->setup.adc_shift[mux];
temp_u16 <<= 8;
temp_u16 |= fpc1020->setup.adc_gain[mux];
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_ADC_SHIFT_GAIN, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = fpc1020->setup.pxl_ctrl[mux];
temp_u16 |= FPC1020_PXL_BIAS_CTRL;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_PXL_CTRL, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = 0x03 | 0x08;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_IMAGE_SETUP, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = fpc1020->setup.finger_detect_threshold;
FPC1020_MK_REG_WRITE(reg, FPC1020_REG_FNGR_DET_THRES, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = 0x00ff;
FPC1020_MK_REG_WRITE(reg, FPC1020_REG_FNGR_DET_CNTR, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
out:
return error;
}
/* -------------------------------------------------------------------- */
static int fpc1020_write_sensor_1020a_a3a4_setup(fpc1020_data_t *fpc1020)
{
int error = 0;
u8 temp_u8;
u16 temp_u16;
u64 temp_u64;
fpc1020_reg_access_t reg;
const int mux = FPC1020_MAX_ADC_SETTINGS - 1;
const int rev = fpc1020->chip.revision;
dev_dbg(&fpc1020->spi->dev, "%s %d\n", __func__, mux);
if (rev == 4)
{
temp_u8 = 0x09;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_DLY, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u64 = 0x0808080814141414;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_SAMPLE_PX_DLY, &temp_u64);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
}
else if (rev == 3)
{
temp_u64 = 0x1717171723232323;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_SAMPLE_PX_DLY, &temp_u64);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = 0x0f;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_PXL_RST_DLY, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = 0x18;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_DLY, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
}
else
{
error = -EINVAL;
goto out;
}
temp_u8 = (fpc1020->vddtx_mv > 0) ? 0x02 : /* external supply */
(fpc1020->txout_boost) ? 0x22 : 0x12; /* internal supply */
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_CONF, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = fpc1020->setup.adc_shift[mux];
temp_u16 <<= 8;
temp_u16 |= fpc1020->setup.adc_gain[mux];
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_ADC_SHIFT_GAIN, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = fpc1020->setup.pxl_ctrl[mux];
temp_u16 |= FPC1020_PXL_BIAS_CTRL;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_PXL_CTRL, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = 0x03 | 0x08;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_IMAGE_SETUP, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = fpc1020->setup.finger_detect_threshold;
FPC1020_MK_REG_WRITE(reg, FPC1020_REG_FNGR_DET_THRES, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = 0x00ff;
FPC1020_MK_REG_WRITE(reg, FPC1020_REG_FNGR_DET_CNTR, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
out:
return error;
}
/* -------------------------------------------------------------------- */
static int fpc1020_write_sensor_1021_setup(fpc1020_data_t *fpc1020)
{
int error = 0;
u8 temp_u8;
u16 temp_u16;
u64 temp_u64;
fpc1020_reg_access_t reg;
const int mux = FPC1020_MAX_ADC_SETTINGS - 1;
const int rev = fpc1020->chip.revision;
dev_dbg(&fpc1020->spi->dev, "%s %d\n", __func__, mux);
if (rev == 0)
return -EINVAL;
temp_u8 = 0x09;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_DLY, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u64 = 0x0808080814141414;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_SAMPLE_PX_DLY, &temp_u64);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = (fpc1020->vddtx_mv > 0) ? 0x02 : /* external supply */
(fpc1020->txout_boost) ? 0x22 : 0x12; /* internal supply */
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_CONF, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = fpc1020->setup.adc_shift[mux];
temp_u16 <<= 8;
temp_u16 |= fpc1020->setup.adc_gain[mux];
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_ADC_SHIFT_GAIN, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = fpc1020->setup.pxl_ctrl[mux];
temp_u16 |= FPC1020_PXL_BIAS_CTRL;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_PXL_CTRL, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = 0x03 | 0x08;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_IMAGE_SETUP, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = fpc1020->setup.finger_detect_threshold;
FPC1020_MK_REG_WRITE(reg, FPC1020_REG_FNGR_DET_THRES, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = 0x00ff;
FPC1020_MK_REG_WRITE(reg, FPC1020_REG_FNGR_DET_CNTR, &temp_u16);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
out:
return error;
}
/* -------------------------------------------------------------------- */
static int fpc1020_write_sensor_1150_setup(fpc1020_data_t *fpc1020)
{
int error = 0;
u8 temp_u8;
u16 temp_u16;
u32 temp_u32;
u64 temp_u64;
fpc1020_reg_access_t reg;
const int mux = FPC1020_MAX_ADC_SETTINGS - 1;
const int rev = fpc1020->chip.revision;
dev_dbg(&fpc1020->spi->dev, "%s %d\n", __func__, mux);
if (rev == 0)
return -EINVAL;
temp_u8 = 0x09;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_DLY, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u64 = 0x0808080814141414;
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_SAMPLE_PX_DLY, &temp_u64);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u8 = (fpc1020->vddtx_mv > 0) ? 0x02 : /* external supply */
(fpc1020->txout_boost) ? 0x22 : 0x12; /* internal supply */
FPC1020_MK_REG_WRITE(reg, FPC102X_REG_FINGER_DRIVE_CONF, &temp_u8);
error = fpc1020_reg_access(fpc1020, ®);
if (error)
goto out;
temp_u16 = fpc1020->setup.adc_shift[mux];