68 static inline u32 mt7621_spi_read(struct mt7621_spi *rs, u32 reg)  in mt7621_spi_read()  argument
70 	return ioread32(rs->base + reg);  in mt7621_spi_read()
73 static inline void mt7621_spi_write(struct mt7621_spi *rs, u32 reg, u32 val)  in mt7621_spi_write()  argument
75 	iowrite32(val, rs->base + reg);  in mt7621_spi_write()
80 	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);  in mt7621_spi_set_cs()  local
90 	master = mt7621_spi_read(rs, MT7621_SPI_MASTER);  in mt7621_spi_set_cs()
93 	mt7621_spi_write(rs, MT7621_SPI_MASTER, master);  in mt7621_spi_set_cs()
95 	rs->pending_write = 0;  in mt7621_spi_set_cs()
99 	mt7621_spi_write(rs, MT7621_SPI_POLAR, polar);  in mt7621_spi_set_cs()
104 	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);  in mt7621_spi_prepare()  local
110 	rate = DIV_ROUND_UP(rs->sys_freq, speed);  in mt7621_spi_prepare()
119 	reg = mt7621_spi_read(rs, MT7621_SPI_MASTER);  in mt7621_spi_prepare()
122 	rs->speed = speed;  in mt7621_spi_prepare()
135 	mt7621_spi_write(rs, MT7621_SPI_MASTER, reg);  in mt7621_spi_prepare()
140 static inline int mt7621_spi_wait_till_ready(struct mt7621_spi *rs)  in mt7621_spi_wait_till_ready()  argument
147 		status = mt7621_spi_read(rs, MT7621_SPI_TRANS);  in mt7621_spi_wait_till_ready()
157 static void mt7621_spi_read_half_duplex(struct mt7621_spi *rs,  in mt7621_spi_read_half_duplex()  argument
167 	tx_len = rs->pending_write;  in mt7621_spi_read_half_duplex()
168 	rs->pending_write = 0;  in mt7621_spi_read_half_duplex()
178 		mt7621_spi_write(rs, MT7621_SPI_MOREBUF, val);  in mt7621_spi_read_half_duplex()
182 		val = mt7621_spi_read(rs, MT7621_SPI_TRANS);  in mt7621_spi_read_half_duplex()
184 		mt7621_spi_write(rs, MT7621_SPI_TRANS, val);  in mt7621_spi_read_half_duplex()
186 		mt7621_spi_wait_till_ready(rs);  in mt7621_spi_read_half_duplex()
190 				val = mt7621_spi_read(rs, MT7621_SPI_DATA0 + i);  in mt7621_spi_read_half_duplex()
199 static inline void mt7621_spi_flush(struct mt7621_spi *rs)  in mt7621_spi_flush()  argument
201 	mt7621_spi_read_half_duplex(rs, 0, NULL);  in mt7621_spi_flush()
204 static void mt7621_spi_write_half_duplex(struct mt7621_spi *rs,  in mt7621_spi_write_half_duplex()  argument
207 	int len = rs->pending_write;  in mt7621_spi_write_half_duplex()
211 		val = mt7621_spi_read(rs, MT7621_SPI_OPCODE + (len & ~3));  in mt7621_spi_write_half_duplex()
220 			rs->pending_write = len;  in mt7621_spi_write_half_duplex()
221 			mt7621_spi_flush(rs);  in mt7621_spi_write_half_duplex()
231 			mt7621_spi_write(rs, MT7621_SPI_OPCODE + len - 4, val);  in mt7621_spi_write_half_duplex()
242 		mt7621_spi_write(rs, MT7621_SPI_OPCODE + (len & ~3), val);  in mt7621_spi_write_half_duplex()
245 	rs->pending_write = len;  in mt7621_spi_write_half_duplex()
251 	struct mt7621_spi *rs = spi_controller_get_devdata(master);  in mt7621_spi_transfer_one_message()  local
257 	mt7621_spi_wait_till_ready(rs);  in mt7621_spi_transfer_one_message()
284 			mt7621_spi_read_half_duplex(rs, t->len, t->rx_buf);  in mt7621_spi_transfer_one_message()
286 			mt7621_spi_write_half_duplex(rs, t->len, t->tx_buf);  in mt7621_spi_transfer_one_message()
292 	mt7621_spi_flush(rs);  in mt7621_spi_transfer_one_message()
304 	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);  in mt7621_spi_setup()  local
307 	    (spi->max_speed_hz > (rs->sys_freq / 2)))  in mt7621_spi_setup()
308 		spi->max_speed_hz = rs->sys_freq / 2;  in mt7621_spi_setup()
310 	if (spi->max_speed_hz < (rs->sys_freq / 4097)) {  in mt7621_spi_setup()
329 	struct mt7621_spi *rs;  in mt7621_spi_probe()  local
347 	master = devm_spi_alloc_master(&pdev->dev, sizeof(*rs));  in mt7621_spi_probe()
363 	rs = spi_controller_get_devdata(master);  in mt7621_spi_probe()
364 	rs->base = base;  in mt7621_spi_probe()
365 	rs->master = master;  in mt7621_spi_probe()
366 	rs->sys_freq = clk_get_rate(clk);  in mt7621_spi_probe()
367 	rs->pending_write = 0;  in mt7621_spi_probe()
368 	dev_info(&pdev->dev, "sys_freq: %u\n", rs->sys_freq);  in mt7621_spi_probe()