245 lines
8.0 KiB
C
245 lines
8.0 KiB
C
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/*
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* Copyright (C) 2016 Samsung Electronics. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#ifndef _ET7XX_LINUX_DRIVER_H_
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#define _ET7XX_LINUX_DRIVER_H_
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#include <linux/module.h>
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#include <linux/spi/spi.h>
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#include <linux/wakelock.h>
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#include <linux/kernel.h>
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#include <linux/uaccess.h>
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#include <linux/delay.h>
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#ifdef ENABLE_SENSORS_FPRINT_SECURE
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#include <linux/clk.h>
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#include <linux/pm_runtime.h>
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#include <linux/spi/spidev.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/of_dma.h>
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#endif /* ENABLE_SENSORS_FPRINT_SECURE */
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#include <linux/regulator/consumer.h>
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#include <linux/pinctrl/consumer.h>
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#include "../pinctrl/core.h"
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#include <linux/pm_qos.h>
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#define VENDOR "EGISTEC"
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#define CHIP_ID "ET7XX"
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/* assigned */
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#define ET7XX_MAJOR 152
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/* ... up to 256 */
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#define N_SPI_MINORS 32
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static DECLARE_BITMAP(minors, N_SPI_MINORS);
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static LIST_HEAD(device_list);
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static DEFINE_MUTEX(device_list_lock);
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static struct et7xx_data *g_data;
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static unsigned int bufsiz = 1024;
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module_param(bufsiz, uint, 0444);
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MODULE_PARM_DESC(bufsiz, "data bytes in biggest supported SPI message");
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/* spi communication opcode */
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#define OP_REG_R 0x20
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#define OP_REG_R_S 0x22
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#define OP_REG_R_S_BW 0x23
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#define OP_REG_W 0x24
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#define OP_REG_W_S 0x26
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#define OP_REG_W_S_BW 0x27
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#define OP_EF_R 0x40
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#define OP_EF_W 0x42
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#define OP_FB_R 0x50
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#define OP_FB_W 0x52
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#define OP_ZAVG_R 0x60
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#define OP_HSTG_R 0x62
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#define OP_CIS_ADDR_R 0x71
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#define OP_CIS_REG_W 0x70
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#define OP_GET_FRAME 0x61
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#define OP_PRE_CAPTURE 0x62
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/* ioctl opcode for spi */
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#ifndef ENABLE_SENSORS_FPRINT_SECURE
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#define FP_REGISTER_READ 0x01
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#define FP_REGISTER_BREAD 0x20
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#define FP_REGISTER_BREAD_BACKWARD 0x24
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#define FP_REGISTER_WRITE 0x02
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#define FP_REGISTER_BWRITE 0x21
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#define FP_REGISTER_BWRITE_BACKWARD 0x25
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#define FP_EFUSE_READ 0x10
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#define FP_EFUSE_WRITE 0x11
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#define FP_GET_IMG 0x12
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#define FP_WRITE_IMG 0x13
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#define FP_GET_ZAVG 0x14
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#define FP_GET_HSTG 0x15
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#define FP_CIS_REGISTER_READ 0x08
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#define FP_CIS_REGISTER_WRITE 0x09
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#define FP_CIS_PRE_CAPTURE 0x0A
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#define FP_GET_CIS_FRAME 0x03
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#define FP_TRANSFER_COMMAND 0x0D
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#define FP_EEPROM_READ 0x80
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#define FP_EEPROM_HIGH_SPEED_READ 0x81
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#define FP_EEPROM_WRITE 0x82
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#define FP_EEPROM_CHIP_ERASE 0x83
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#define FP_EEPROM_SECTOR_ERASE 0x84
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#define FP_EEPROM_BLOCK_ERASE 0x85
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#define FP_EEPROM_WREN 0x86
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#define FP_EEPROM_WRDI 0x87
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#define FP_EEPROM_RSDR 0x88
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#define FP_EEPROM_WRITE_IN_NON_TZ 0x8A
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#endif
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/* ioctl opcode for other request */
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#define FP_SENSOR_RESET 0x04
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#define FP_POWER_CONTROL 0x05
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#define FP_SET_SPI_CLOCK 0x06
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#define FP_RESET_CONTROL 0x07
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#define FP_DISABLE_SPI_CLOCK 0x10
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#ifdef ENABLE_SENSORS_FPRINT_SECURE
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#define FP_CPU_SPEEDUP 0x11
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#define FP_SET_SENSOR_TYPE 0x14
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/* Do not use ioctl number 0x15 */
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#endif
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#define FP_SPI_VALUE 0x1a
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#define FP_MODEL_INFO 0x1f
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#define INT_TRIGGER_READ 0xa6
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#define INT_TRIGGER_POLLING 0xa7
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#define FP_IOCTL_RESERVED_01 0x1b
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#define FP_IOCTL_RESERVED_02 0x1c
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#define FP_IOCTL_RESERVED_03 0xa4
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#define FP_IOCTL_RESERVED_04 0xa5
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#define FP_IOCTL_RESERVED_05 0xa8
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#define FP_IOCTL_RESERVED_06 0x16
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#define FP_IOCTL_RESERVED_07 0x17
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#define FP_IOCTL_RESERVED_08 0x19
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#define SLOW_BAUD_RATE 20000000
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#define DIVISION_OF_IMAGE 4
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#define LARGE_SPI_TRANSFER_BUFFER 64
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#define DETECT_ADM 1
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struct egis_ioc_transfer {
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u8 *tx_buf;
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u8 *rx_buf;
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__u32 len;
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__u32 speed_hz;
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__u16 delay_usecs;
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__u8 bits_per_word;
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__u8 cs_change;
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__u8 opcode;
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__u8 pad[3];
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};
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#define EGIS_IOC_MAGIC 'k'
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#define EGIS_MSGSIZE(N) \
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((((N)*(sizeof(struct egis_ioc_transfer))) < (1 << _IOC_SIZEBITS)) \
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? ((N)*(sizeof(struct egis_ioc_transfer))) : 0)
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#define EGIS_IOC_MESSAGE(N) _IOW(EGIS_IOC_MAGIC, 0, char[EGIS_MSGSIZE(N)])
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struct et7xx_data {
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dev_t devt;
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spinlock_t spi_lock;
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struct spi_device *spi;
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struct list_head device_entry;
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/* buffer is NULL unless this device is open (users > 0) */
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struct mutex buf_lock;
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unsigned int users;
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u8 *buf;/* tx buffer for sensor register read/write */
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unsigned int bufsiz; /* MAX size of tx and rx buffer */
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unsigned int sleepPin; /* Sleep GPIO pin number */
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unsigned int ldo_pin; /* Ldo GPIO pin number */
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unsigned int min_cpufreq_limit;
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const char *rb;
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bool ldo_onoff;
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struct work_struct work_debug;
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struct workqueue_struct *wq_dbg;
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struct timer_list dbg_timer;
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int sensortype;
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u32 spi_value;
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struct device *dev;
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struct device *fp_device;
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#ifdef ENABLE_SENSORS_FPRINT_SECURE
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struct clk *fp_spi_pclk;
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struct clk *fp_spi_sclk;
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struct wake_lock fp_spi_lock;
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#endif
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unsigned long spi_speed;
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bool enabled_clk;
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bool tz_mode;
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const char *chipid;
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const char *model_info;
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const char *btp_vdd;
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const char *sensor_position;
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struct regulator *regulator_3p3;
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struct pinctrl *p;
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struct pinctrl_state *pins_poweron;
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struct pinctrl_state *pins_poweroff;
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bool ldo_enabled;
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struct pm_qos_request pm_qos;
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};
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int et7xx_io_read_cis_register(struct et7xx_data *etspi, u8 *addr, u8 *buf);
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int et7xx_io_write_cis_register(struct et7xx_data *etspi, u8 *buf);
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int et7xx_io_pre_capture(struct et7xx_data *etspi);
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int et7xx_io_get_cis_frame(struct et7xx_data *etspi, u8 *fr, u32 size);
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int et7xx_io_read_register(struct et7xx_data *etspi, u8 *addr, u8 *buf);
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int et7xx_io_burst_read_register(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_io_burst_read_register_backward(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_io_write_register(struct et7xx_data *etspi, u8 *buf);
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int et7xx_io_burst_write_register(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_io_burst_write_register_backward(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_io_read_efuse(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_io_write_efuse(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_io_get_frame(struct et7xx_data *etspi, u8 *fr, u32 size);
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int et7xx_io_write_frame(struct et7xx_data *etspi, u8 *fr, u32 size);
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int et7xx_io_get_zone_average(struct et7xx_data *etspi, u8 *fr, u32 size);
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int et7xx_io_get_histogram(struct et7xx_data *etspi, u8 *fr, u32 size);
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int et7xx_io_transfer_command(struct et7xx_data *etspi, u8 *tx, u8 *rx,
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u32 size);
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int et7xx_read_register(struct et7xx_data *etspi, u8 addr, u8 *buf);
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int et7xx_write_register(struct et7xx_data *etspi, u8 addr, u8 buf);
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int et7xx_eeprom_rdsr(struct et7xx_data *etspi, u8 *value);
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int et7xx_eeprom_read(struct et7xx_data *etspi, struct egis_ioc_transfer *ioc);
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int et7xx_eeprom_high_speed_read(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_eeprom_write(struct et7xx_data *etspi, struct egis_ioc_transfer *ioc);
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int et7xx_eeprom_chip_erase(struct et7xx_data *etspi);
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int et7xx_eeprom_sector_erase(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_eeprom_block_erase(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_eeprom_write_controller(struct et7xx_data *etspi, int enable);
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int et7xx_eeprom_write_in_non_tz(struct et7xx_data *etspi,
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struct egis_ioc_transfer *ioc);
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int et7xx_spi_clk_enable(struct et7xx_data *etspi);
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int et7xx_spi_clk_disable(struct et7xx_data *etspi);
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int et7xx_set_cpu_speedup(struct et7xx_data *etspi, int onoff);
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int fps_resume_set(void);
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int fps_suspend_set(struct et7xx_data *etspi);
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int et7xx_register_platform_variable(struct et7xx_data *etspi);
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int et7xx_unregister_platform_variable(struct et7xx_data *etspi);
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#endif
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