93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
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/*
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ifd_amsmc.c
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This module provides IFD handling functions for Amlogic SMC internal reader.
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*/
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#include "../globals.h"
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#ifdef CARDREADER_INTERNAL_AMSMC
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#include <linux/types.h>
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#include "atr.h"
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#include "io_serial.h"
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#define AMSMC_MAX_ATR_LEN 33
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struct am_smc_atr
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{
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unsigned char atr[AMSMC_MAX_ATR_LEN];
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int atr_len;
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};
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#define AMSMC_IOC_MAGIC 'C'
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#define AMSMC_IOC_RESET _IOR(AMSMC_IOC_MAGIC, 0x00, struct am_smc_atr)
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#define AMSMC_IOC_GET_STATUS _IOR(AMSMC_IOC_MAGIC, 0x01, int)
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#define OK 0
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#define ERROR 1
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static int32_t Amsmc_GetStatus(struct s_reader *reader, int32_t *status)
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{
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call(ioctl(reader->handle, AMSMC_IOC_GET_STATUS, status) < 0);
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return OK;
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}
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static int32_t Amsmc_Activate(struct s_reader *reader, ATR *atr)
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{
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struct am_smc_atr smc_atr;
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if(ioctl(reader->handle, AMSMC_IOC_RESET, &smc_atr) < 0)
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{
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rdr_log(reader, "Error: %s ioctl(AMSMC_IOC_RESET) failed. (%d:%s)", __func__, errno, strerror(errno));
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return ERROR;
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}
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if(ATR_InitFromArray(atr, smc_atr.atr, smc_atr.atr_len) == ERROR)
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{
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rdr_log(reader, "WARNING: ATR is invalid!");
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return ERROR;
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}
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return OK;
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}
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static int32_t Amsmc_Init(struct s_reader *reader)
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{
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const int flags = O_RDWR | O_NOCTTY;
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reader->handle = open(reader->device, flags);
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if(reader->handle < 0)
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{
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rdr_log(reader, "ERROR: Opening device %s (errno=%d %s)", reader->device, errno, strerror(errno));
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return ERROR;
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}
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return OK;
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}
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static int32_t Amsmc_Close(struct s_reader *reader)
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{
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rdr_log_dbg(reader, D_DEVICE, "Closing AMSMC device %s", reader->device);
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if(reader->handle >= 0)
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{
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if(close(reader->handle) != 0)
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{
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return ERROR;
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}
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reader->handle = -1;
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}
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return OK;
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}
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const struct s_cardreader cardreader_internal_amsmc =
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{
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.desc = "internal",
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.typ = R_INTERNAL,
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.flush = 1,
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.max_clock_speed = 1,
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.reader_init = Amsmc_Init,
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.get_status = Amsmc_GetStatus,
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.activate = Amsmc_Activate,
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.transmit = IO_Serial_Transmit,
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.receive = IO_Serial_Receive,
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.close = Amsmc_Close,
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};
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#endif
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