diff options
Diffstat (limited to 'v4l2-apps/util/cx25821/regReadWrite.c')
| -rw-r--r-- | v4l2-apps/util/cx25821/regReadWrite.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/v4l2-apps/util/cx25821/regReadWrite.c b/v4l2-apps/util/cx25821/regReadWrite.c new file mode 100644 index 000000000..2d506183d --- /dev/null +++ b/v4l2-apps/util/cx25821/regReadWrite.c @@ -0,0 +1,158 @@ +/* + * Driver for the Conexant CX25821 PCIe bridge + * + * Copyright (C) 2009 Conexant Systems Inc. + * Authors <hiep.huynh@conexant.com>, <shu.lin@conexant.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <fcntl.h> +#include <string.h> +#include <linux/errno.h> +#include <linux/ioctl.h> + + +#define REG_READ 900 +#define REG_WRITE 901 + +typedef struct{ + char *vid_stdname; + int pixel_format; + int cif_resolution_enable; + int cif_width; + int decoder_select; + int command; + int reg_address; + int reg_data; +}downstream_user_struct; + + +void print_usage() +{ + printf("\n*********************************\n"); + printf("Sample Usage: ./reg d 1 r 0x01\n"); + printf("Sample Usage: ./reg d 1 w 0x0 0x2\n"); + printf(" d device_id Device ID (1 and above) for MultiCard\n"); + printf(" r Read Athena register\n"); + printf(" w Write Athena register\n"); +} + +int main(int argc, char** argv) +{ + unsigned int cmd= 0 ; + int fp; + int i = 1, j = 0, k = 0, len = 0; + int mode = 0; + + int register_addr = 0; + int write_value = 0; + + int device_id = 0, video_id = 11; + char * temp2; + char *device_str[4] = {"/dev/video11", "/dev/video23", "/dev/video35", "/dev/video47"}; + + char mode_temp = 's'; + char *param_temp; + + + if(argc < 5 || (tolower(*(argv[1])) != 'd') ) + { + print_usage(); + return -EINVAL; + } + + sscanf(argv[2], "%d", &device_id ); + i += 2; + + if( device_id <= 0 || device_id > 4 ) + { + print_usage(); + return -EINVAL; + } + + printf("\n********************************* \n"); + + if((fp = open(device_str[device_id-1], O_RDWR)) == -1) + { + printf("Error: cannot open device file %s !\n", device_str[device_id-1]); + return -EINVAL; + } + + printf("Device %s open for IOCTL successfully!\n", device_str[device_id-1]); + + + for( ; i < argc; i++) + { + temp2 = argv[i]; + mode_temp = tolower(temp2[0]); + param_temp = argv[i+1]; + + + switch(mode_temp) + { + case 'r': + { + downstream_user_struct arguments; + + sscanf(param_temp, "%x", ®ister_addr ); + + arguments.reg_address = register_addr; + arguments.command = REG_READ; + + printf("Read parameters: read register = 0x%x, command = %d \n", arguments.reg_address, arguments.command); + + if((ioctl(fp, arguments.command, (char *) &arguments)) == -1) + printf("Error: ioctl FAILED!\n"); + printf("Reg 0x%x = 0x%x\n", arguments.reg_address, arguments.reg_data); + } + break; + + case 'w': + { + downstream_user_struct arguments; + + sscanf(param_temp, "%x", ®ister_addr ); + sscanf(argv[i+2], "%x", &write_value ); + i++; + + arguments.command = REG_WRITE; + arguments.reg_address = register_addr; + arguments.reg_data = write_value; + + printf("Write parameters: write register = 0x%x, write_value = 0x%x, command = %d \n", arguments.reg_address, arguments.reg_data, arguments.command); + + if((ioctl(fp, arguments.command, (char *) &arguments)) == -1) + printf("Error: ioctl FAILED!\n"); + } + break; + + default: + printf("Please verify the options are correct!\n"); + break; + } + + i++; + } + + + printf("********************************* \n\n"); + close(fp); + return 0; +} + |