29 	u32	reserve1[3];
40 #define TRAMODE_WR	(3<<TRAMODE_OFFSET)
58 #define RXDMAEN		(1<<3)
93 static int __atcspi200_spi_set_speed(struct nds_spi_slave *ns)  in __atcspi200_spi_set_speed()  argument
97 	tm = ns->regs->timing;  in __atcspi200_spi_set_speed()
100 	if(ns->freq >= ns->clock)  in __atcspi200_spi_set_speed()
104 			if (ns->freq >= ns->clock / (2 * (div + 1)))  in __atcspi200_spi_set_speed()
110 	ns->regs->timing = tm;  in __atcspi200_spi_set_speed()
116 static int __atcspi200_spi_claim_bus(struct nds_spi_slave *ns)  in __atcspi200_spi_claim_bus()  argument
119 		ns->regs->ctrl |= (TXFRST|RXFRST|SPIRST);  in __atcspi200_spi_claim_bus()
120 		while((ns->regs->ctrl &(TXFRST|RXFRST|SPIRST))&&(ns->to--))  in __atcspi200_spi_claim_bus()
121 			if(!ns->to)  in __atcspi200_spi_claim_bus()
124 		ns->cmd_len = 0;  in __atcspi200_spi_claim_bus()
125 		format = ns->mode|DATA_LENGTH(8);  in __atcspi200_spi_claim_bus()
126 		ns->regs->format = format;  in __atcspi200_spi_claim_bus()
127 		__atcspi200_spi_set_speed(ns);  in __atcspi200_spi_claim_bus()
132 static int __atcspi200_spi_release_bus(struct nds_spi_slave *ns)  in __atcspi200_spi_release_bus()  argument
138 static int __atcspi200_spi_start(struct nds_spi_slave *ns)  in __atcspi200_spi_start()  argument
141 	int tc = ns->regs->tctrl;  in __atcspi200_spi_start()
144 	if ((ns->din)&&(ns->cmd_len))  in __atcspi200_spi_start()
146 	else if (ns->din)  in __atcspi200_spi_start()
151 	if(ns->dout)  in __atcspi200_spi_start()
152 		olen = ns->tran_len;  in __atcspi200_spi_start()
153 	tc |= (ns->cmd_len+olen-1) << WCNT_OFFSET;  in __atcspi200_spi_start()
155 	if(ns->din)  in __atcspi200_spi_start()
156 		tc |= (ns->tran_len-1) << RCNT_OFFSET;  in __atcspi200_spi_start()
158 	ns->regs->tctrl = tc;  in __atcspi200_spi_start()
159 	ns->regs->cmd = 1;  in __atcspi200_spi_start()
161 	for (i=0;i<ns->cmd_len;i++)  in __atcspi200_spi_start()
162 		ns->regs->data = ns->cmd_buf[i];  in __atcspi200_spi_start()
167 static int __atcspi200_spi_stop(struct nds_spi_slave *ns)  in __atcspi200_spi_stop()  argument
169 	ns->regs->timing = ns->mtiming;  in __atcspi200_spi_stop()
170 	while ((ns->regs->status & SPIBSY)&&(ns->to--))  in __atcspi200_spi_stop()
171 		if (!ns->to)  in __atcspi200_spi_stop()
177 static void __nspi_espi_tx(struct nds_spi_slave *ns, const void *dout)  in __nspi_espi_tx()  argument
179 	ns->regs->data = *(u8 *)dout;  in __nspi_espi_tx()
182 static int __nspi_espi_rx(struct nds_spi_slave *ns, void *din, unsigned int bytes)  in __nspi_espi_rx()  argument
184 	*(u8 *)din = ns->regs->data;  in __nspi_espi_rx()
189 static int __atcspi200_spi_xfer(struct nds_spi_slave *ns,  in __atcspi200_spi_xfer()  argument
198 		u8 *cmd_buf = ns->cmd_buf;  in __atcspi200_spi_xfer()
199 		size_t cmd_len = ns->cmd_len;  in __atcspi200_spi_xfer()
204 		max_tran_len = ns->max_transfer_length;  in __atcspi200_spi_xfer()
207 			cmd_len = ns->cmd_len = data_len;  in __atcspi200_spi_xfer()
216 			ns->data_len = data_len;  in __atcspi200_spi_xfer()
217 			ns->din = (u8 *)data_in;  in __atcspi200_spi_xfer()
218 			ns->dout = (u8 *)data_out;  in __atcspi200_spi_xfer()
222 			ns->data_len = 0;  in __atcspi200_spi_xfer()
223 			ns->din = 0;  in __atcspi200_spi_xfer()
224 			ns->dout = 0;  in __atcspi200_spi_xfer()
225 			cmd_len = ns->cmd_len = data_len;  in __atcspi200_spi_xfer()
229 			__atcspi200_spi_start(ns);  in __atcspi200_spi_xfer()
241 			ns->tran_len = tran_len;  in __atcspi200_spi_xfer()
246 			__atcspi200_spi_start(ns);  in __atcspi200_spi_xfer()
249 				event = in_le32(&ns->regs->status);  in __atcspi200_spi_xfer()
251 					__nspi_espi_tx(ns, dout);  in __atcspi200_spi_xfer()
265 					if (__nspi_espi_rx(ns, din, rx_bytes) == rx_bytes) {  in __atcspi200_spi_xfer()
275 				ns->cmd_buf[1] += ((tran_len>>16)&0xff);  in __atcspi200_spi_xfer()
276 				ns->cmd_buf[2] += ((tran_len>>8)&0xff);  in __atcspi200_spi_xfer()
277 				ns->cmd_buf[3] += ((tran_len)&0xff);  in __atcspi200_spi_xfer()
278 				ns->data_len = data_len;  in __atcspi200_spi_xfer()
280 			ret = __atcspi200_spi_stop(ns);  in __atcspi200_spi_xfer()
282 		ret = __atcspi200_spi_stop(ns);  in __atcspi200_spi_xfer()
289 	struct nds_spi_slave *ns = dev_get_priv(bus);  in atcspi200_spi_set_speed()  local
293 	ns->freq = max_hz;  in atcspi200_spi_set_speed()
294 	__atcspi200_spi_set_speed(ns);  in atcspi200_spi_set_speed()
301 	struct nds_spi_slave *ns = dev_get_priv(bus);  in atcspi200_spi_set_mode()  local
304 	ns->mode = mode;  in atcspi200_spi_set_mode()
314 	struct nds_spi_slave *ns = dev_get_priv(bus);  in atcspi200_spi_claim_bus()  local
316 	if (slave_plat->cs >= ns->num_cs) {  in atcspi200_spi_claim_bus()
321 	return __atcspi200_spi_claim_bus(ns);  in atcspi200_spi_claim_bus()
326 	struct nds_spi_slave *ns = dev_get_priv(dev->parent);  in atcspi200_spi_release_bus()  local
328 	return __atcspi200_spi_release_bus(ns);  in atcspi200_spi_release_bus()
336 	struct nds_spi_slave *ns = dev_get_priv(bus);  in atcspi200_spi_xfer()  local
338 	return __atcspi200_spi_xfer(ns, bitlen, dout, din, flags);  in atcspi200_spi_xfer()
343 	struct nds_spi_slave *ns = dev_get_priv(bus);  in atcspi200_spi_get_clk()  local
356 	ns->clock = clk_rate;  in atcspi200_spi_get_clk()
364 	struct nds_spi_slave *ns = dev_get_priv(bus);  in atcspi200_spi_probe()  local
366 	ns->to = SPI_TIMEOUT;  in atcspi200_spi_probe()
367 	ns->max_transfer_length = MAX_TRANSFER_LEN;  in atcspi200_spi_probe()
368 	ns->mtiming = ns->regs->timing;  in atcspi200_spi_probe()
376 	struct nds_spi_slave *ns = dev_get_priv(bus);  in atcspi200_ofdata_to_platadata()  local
380 	ns->regs = map_physmem(devfdt_get_addr(bus),  in atcspi200_ofdata_to_platadata()
383 	if (!ns->regs) {  in atcspi200_ofdata_to_platadata()
387 	ns->num_cs = fdtdec_get_int(blob, node, "num-cs", 4);  in atcspi200_ofdata_to_platadata()