179 	struct zs_chanstate *cs;  in zs_attach()  local
203 		cs = &zsc->zsc_cs_store[channel];  in zs_attach()
204 		zsc->zsc_cs[channel] = cs;  in zs_attach()
206 		zs_lock_init(cs);  in zs_attach()
207 		cs->cs_channel = channel;  in zs_attach()
208 		cs->cs_private = NULL;  in zs_attach()
209 		cs->cs_ops = &zsops_null;  in zs_attach()
210 		cs->cs_brg_clk = PCLK / 16;  in zs_attach()
216 		cs->cs_reg_csr  = &zc->zc_csr;  in zs_attach()
217 		cs->cs_reg_data = &zc->zc_data;  in zs_attach()
220 		memcpy(cs->cs_creg, zs_init_reg, 16);  in zs_attach()
221 		memcpy(cs->cs_preg, zs_init_reg, 16);  in zs_attach()
225 			cs->cs_defspeed = zs_get_speed(cs);  in zs_attach()
226 			cs->cs_defcflag = zscn_def_cflag;  in zs_attach()
228 			cs->cs_defspeed = 9600;  in zs_attach()
229 			cs->cs_defcflag = zs_def_cflag;  in zs_attach()
233 		cs->cs_rr0_dcd = ZSRR0_DCD;  in zs_attach()
234 		cs->cs_rr0_cts = 0;  in zs_attach()
235 		cs->cs_wr5_dtr = ZSWR5_DTR | ZSWR5_RTS;  in zs_attach()
236 		cs->cs_wr5_rts = 0;  in zs_attach()
245 			zs_write_reg(cs, 9, 0);  in zs_attach()
266 			zs_write_reg(cs,  9, reset);  in zs_attach()
284 	cs = zsc->zsc_cs[0];  in zs_attach()
287 	zs_write_reg(cs, 2, ia->ia_intr);  in zs_attach()
289 	zs_write_reg(cs, 9, zs_init_reg[9]);  in zs_attach()
340 zs_get_speed(struct zs_chanstate *cs)  in zs_get_speed()  argument
344 	tconst = zs_read_reg(cs, 12);  in zs_get_speed()
345 	tconst |= zs_read_reg(cs, 13) << 8;  in zs_get_speed()
346 	return (TCONST_TO_BPS(cs->cs_brg_clk, tconst));  in zs_get_speed()
353 zs_set_speed(struct zs_chanstate *cs, int bps	/* bits per second */)  in zs_set_speed()  argument
361 	if (cs->cs_brg_clk == 0)  in zs_set_speed()
365 	tconst = BPS_TO_TCONST(cs->cs_brg_clk, bps);  in zs_set_speed()
370 	real_bps = TCONST_TO_BPS(cs->cs_brg_clk, tconst);  in zs_set_speed()
381 	if (BPS_TO_TCONST(cs->cs_brg_clk, real_bps) != tconst)  in zs_set_speed()
385 	cs->cs_preg[12] = tconst;  in zs_set_speed()
386 	cs->cs_preg[13] = tconst >> 8;  in zs_set_speed()
393 zs_set_modes(struct zs_chanstate *cs, int cflag	/* bits per second */)  in zs_set_modes()  argument
405 	cs->cs_rr0_pps = 0;  in zs_set_modes()
407 		cs->cs_rr0_dcd = 0;  in zs_set_modes()
409 			cs->cs_rr0_pps = ZSRR0_DCD;  in zs_set_modes()
411 		cs->cs_rr0_dcd = ZSRR0_DCD;  in zs_set_modes()
413 		cs->cs_wr5_dtr = ZSWR5_DTR;  in zs_set_modes()
414 		cs->cs_wr5_rts = ZSWR5_RTS;  in zs_set_modes()
415 		cs->cs_rr0_cts = ZSRR0_CTS;  in zs_set_modes()
417 		cs->cs_wr5_dtr = 0;  in zs_set_modes()
418 		cs->cs_wr5_rts = ZSWR5_DTR;  in zs_set_modes()
419 		cs->cs_rr0_cts = ZSRR0_DCD;  in zs_set_modes()
421 		cs->cs_wr5_dtr = ZSWR5_DTR | ZSWR5_RTS;  in zs_set_modes()
422 		cs->cs_wr5_rts = 0;  in zs_set_modes()
423 		cs->cs_rr0_cts = 0;  in zs_set_modes()
437 zs_read_reg(struct zs_chanstate *cs, uint8_t reg)  in zs_read_reg()  argument
441 	*cs->cs_reg_csr = reg;  in zs_read_reg()
443 	val = *cs->cs_reg_csr;  in zs_read_reg()
449 zs_write_reg(struct zs_chanstate *cs, uint8_t reg, uint8_t val)  in zs_write_reg()  argument
451 	*cs->cs_reg_csr = reg;  in zs_write_reg()
453 	*cs->cs_reg_csr = val;  in zs_write_reg()
458 zs_read_csr(struct zs_chanstate *cs)  in zs_read_csr()  argument
462 	val = *cs->cs_reg_csr;  in zs_read_csr()
468 zs_write_csr(struct zs_chanstate *cs, uint8_t val)  in zs_write_csr()  argument
470 	*cs->cs_reg_csr = val;  in zs_write_csr()
475 zs_read_data(struct zs_chanstate *cs)  in zs_read_data()  argument
479 	val = *cs->cs_reg_data;  in zs_read_data()
485 zs_write_data(struct zs_chanstate *cs, uint8_t val)  in zs_write_data()  argument
487 	*cs->cs_reg_data = val;  in zs_write_data()
503 zs_abort(struct zs_chanstate *cs)  in zs_abort()  argument
510 		rr0 = *cs->cs_reg_csr;  in zs_abort()