262 	struct data_filter      fir;  member
499 	memset(&stk->fir, 0x00, sizeof(stk->fir));  in stk8baxx_reg_init()
532 		if (stk->fir.num < firlength) {  in stk8baxx_low_pass()
533 			stk->fir.raw[stk->fir.num][0] = acc_lp->x;  in stk8baxx_low_pass()
534 			stk->fir.raw[stk->fir.num][1] = acc_lp->y;  in stk8baxx_low_pass()
535 			stk->fir.raw[stk->fir.num][2] = acc_lp->z;  in stk8baxx_low_pass()
536 			stk->fir.sum[0] += acc_lp->x;  in stk8baxx_low_pass()
537 			stk->fir.sum[1] += acc_lp->y;  in stk8baxx_low_pass()
538 			stk->fir.sum[2] += acc_lp->z;  in stk8baxx_low_pass()
539 			stk->fir.num++;  in stk8baxx_low_pass()
540 			stk->fir.idx++;  in stk8baxx_low_pass()
542 			idx = stk->fir.idx % firlength;  in stk8baxx_low_pass()
543 			stk->fir.sum[0] -= stk->fir.raw[idx][0];  in stk8baxx_low_pass()
544 			stk->fir.sum[1] -= stk->fir.raw[idx][1];  in stk8baxx_low_pass()
545 			stk->fir.sum[2] -= stk->fir.raw[idx][2];  in stk8baxx_low_pass()
546 			stk->fir.raw[idx][0] = acc_lp->x;  in stk8baxx_low_pass()
547 			stk->fir.raw[idx][1] = acc_lp->y;  in stk8baxx_low_pass()
548 			stk->fir.raw[idx][2] = acc_lp->z;  in stk8baxx_low_pass()
549 			stk->fir.sum[0] += acc_lp->x;  in stk8baxx_low_pass()
550 			stk->fir.sum[1] += acc_lp->y;  in stk8baxx_low_pass()
551 			stk->fir.sum[2] += acc_lp->z;  in stk8baxx_low_pass()
552 			stk->fir.idx++;  in stk8baxx_low_pass()
554 			if (abs(stk->fir.sum[0] / firlength) <= STK_ZG_COUNT)  in stk8baxx_low_pass()
555 				acc_lp->x = (stk->fir.sum[0] * zero_fir) / firlength;  in stk8baxx_low_pass()
557 				acc_lp->x = stk->fir.sum[0] / firlength;  in stk8baxx_low_pass()
558 			if (abs(stk->fir.sum[1] / firlength) <= STK_ZG_COUNT)  in stk8baxx_low_pass()
559 				acc_lp->y = (stk->fir.sum[1] * zero_fir) / firlength;  in stk8baxx_low_pass()
561 				acc_lp->y = stk->fir.sum[1] / firlength;  in stk8baxx_low_pass()
562 			if (abs(stk->fir.sum[2] / firlength) <= STK_ZG_COUNT)  in stk8baxx_low_pass()
563 				acc_lp->z = (stk->fir.sum[2] * zero_fir) / firlength;  in stk8baxx_low_pass()
565 				acc_lp->z = stk->fir.sum[2] / firlength;  in stk8baxx_low_pass()
567 			acc_lp->x = stk->fir.sum[0] / firlength;  in stk8baxx_low_pass()
568 			acc_lp->y = stk->fir.sum[1] / firlength;  in stk8baxx_low_pass()
569 			acc_lp->z = stk->fir.sum[2] / firlength;  in stk8baxx_low_pass()