On Sun, May 20, 2007, e9hack wrote: > > With the attached patch, it works for the stv0297 functions. It > doesn't solve the problem, why I've wrote the initial patch. I need a > dump from the registers of the stv0297. I've attach a second patch. > stv0297_attach() inserts a wrapper between i2ctransfer() and the > transfer function of the saa7146. The add/del functions for the > wrapper are a little bit > dirty. I didn't find a clean way for the add/del function. Hm, I was trying to tell you that the problem is in i2cdump, not in saa7146 or stv0297. i2cdump is simply limited to simple SMBUS-like transfers, but I think it wouldn't be difficult to extend it or write a new utility which uses the I2C_RDWR ioctl to perform the transfer as required by stv0297. http://lm-sensors.org/svn/lm-sensors/trunk/prog/dump/i2cdump.c http://lm-sensors.org/svn/lm-sensors/trunk/kernel/include/i2c-dev.h Something like that would do it (except for the race which I2C_M_STOP should fix): #include <stdio.h> #include <sys/types.h> #include <sys/stat.h> #include <fcntl.h> #include <sys/ioctl.h> #include <unistd.h> #include "i2c-dev.h" int main() { unsigned char reg = 0x00; unsigned char val; struct i2c_msg msgs[] = { { .addr = 0x08, .flags = I2C_M_WR, .buf = ®, .len = 1 }, { .addr = 0x08, .flags = I2C_M_RD, .buf = &val, .len = 1 } }; struct i2c_rdwr_ioctl_data i2c_rdwr = { .msgs = msgs, .nmsgs = 2 }; int fd; fd = open("/dev/i2c-1", O_RDWR); if (fd < 0) perror("open"); if (ioctl(fd, I2C_RDWR, &i2c_rdwr) == -1) perror("ioctl I2C_RDWR"); close(fd); printf("%02x\n", val); return 0; } HTH, Johannes _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
