67 static inline u32 mt7621_spi_read(struct mt7621_spi *rs, u32 reg)  in mt7621_spi_read()  argument
69 	return ioread32(rs->base + reg);  in mt7621_spi_read()
72 static inline void mt7621_spi_write(struct mt7621_spi *rs, u32 reg, u32 val)  in mt7621_spi_write()  argument
74 	iowrite32(val, rs->base + reg);  in mt7621_spi_write()
79 	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);  in mt7621_spi_set_cs()  local
89 	master = mt7621_spi_read(rs, MT7621_SPI_MASTER);  in mt7621_spi_set_cs()
92 	mt7621_spi_write(rs, MT7621_SPI_MASTER, master);  in mt7621_spi_set_cs()
94 	rs->pending_write = 0;  in mt7621_spi_set_cs()
98 	mt7621_spi_write(rs, MT7621_SPI_POLAR, polar);  in mt7621_spi_set_cs()
103 	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);  in mt7621_spi_prepare()  local
109 	rate = DIV_ROUND_UP(rs->sys_freq, speed);  in mt7621_spi_prepare()
118 	reg = mt7621_spi_read(rs, MT7621_SPI_MASTER);  in mt7621_spi_prepare()
121 	rs->speed = speed;  in mt7621_spi_prepare()
134 	mt7621_spi_write(rs, MT7621_SPI_MASTER, reg);  in mt7621_spi_prepare()
139 static inline int mt7621_spi_wait_till_ready(struct mt7621_spi *rs)  in mt7621_spi_wait_till_ready()  argument
146 		status = mt7621_spi_read(rs, MT7621_SPI_TRANS);  in mt7621_spi_wait_till_ready()
156 static void mt7621_spi_read_half_duplex(struct mt7621_spi *rs,  in mt7621_spi_read_half_duplex()  argument
166 	tx_len = rs->pending_write;  in mt7621_spi_read_half_duplex()
167 	rs->pending_write = 0;  in mt7621_spi_read_half_duplex()
177 		mt7621_spi_write(rs, MT7621_SPI_MOREBUF, val);  in mt7621_spi_read_half_duplex()
181 		val = mt7621_spi_read(rs, MT7621_SPI_TRANS);  in mt7621_spi_read_half_duplex()
183 		mt7621_spi_write(rs, MT7621_SPI_TRANS, val);  in mt7621_spi_read_half_duplex()
185 		mt7621_spi_wait_till_ready(rs);  in mt7621_spi_read_half_duplex()
189 				val = mt7621_spi_read(rs, MT7621_SPI_DATA0 + i);  in mt7621_spi_read_half_duplex()
198 static inline void mt7621_spi_flush(struct mt7621_spi *rs)  in mt7621_spi_flush()  argument
200 	mt7621_spi_read_half_duplex(rs, 0, NULL);  in mt7621_spi_flush()
203 static void mt7621_spi_write_half_duplex(struct mt7621_spi *rs,  in mt7621_spi_write_half_duplex()  argument
206 	int len = rs->pending_write;  in mt7621_spi_write_half_duplex()
210 		val = mt7621_spi_read(rs, MT7621_SPI_OPCODE + (len & ~3));  in mt7621_spi_write_half_duplex()
219 			rs->pending_write = len;  in mt7621_spi_write_half_duplex()
220 			mt7621_spi_flush(rs);  in mt7621_spi_write_half_duplex()
230 			mt7621_spi_write(rs, MT7621_SPI_OPCODE + len - 4, val);  in mt7621_spi_write_half_duplex()
241 		mt7621_spi_write(rs, MT7621_SPI_OPCODE + (len & ~3), val);  in mt7621_spi_write_half_duplex()
244 	rs->pending_write = len;  in mt7621_spi_write_half_duplex()
250 	struct mt7621_spi *rs = spi_controller_get_devdata(master);  in mt7621_spi_transfer_one_message()  local
256 	mt7621_spi_wait_till_ready(rs);  in mt7621_spi_transfer_one_message()
283 			mt7621_spi_read_half_duplex(rs, t->len, t->rx_buf);  in mt7621_spi_transfer_one_message()
285 			mt7621_spi_write_half_duplex(rs, t->len, t->tx_buf);  in mt7621_spi_transfer_one_message()
291 	mt7621_spi_flush(rs);  in mt7621_spi_transfer_one_message()
303 	struct mt7621_spi *rs = spidev_to_mt7621_spi(spi);  in mt7621_spi_setup()  local
306 	    (spi->max_speed_hz > (rs->sys_freq / 2)))  in mt7621_spi_setup()
307 		spi->max_speed_hz = rs->sys_freq / 2;  in mt7621_spi_setup()
309 	if (spi->max_speed_hz < (rs->sys_freq / 4097)) {  in mt7621_spi_setup()
328 	struct mt7621_spi *rs;  in mt7621_spi_probe()  local
351 	master = devm_spi_alloc_master(&pdev->dev, sizeof(*rs));  in mt7621_spi_probe()
368 	rs = spi_controller_get_devdata(master);  in mt7621_spi_probe()
369 	rs->base = base;  in mt7621_spi_probe()
370 	rs->clk = clk;  in mt7621_spi_probe()
371 	rs->master = master;  in mt7621_spi_probe()
372 	rs->sys_freq = clk_get_rate(rs->clk);  in mt7621_spi_probe()
373 	rs->pending_write = 0;  in mt7621_spi_probe()
374 	dev_info(&pdev->dev, "sys_freq: %u\n", rs->sys_freq);  in mt7621_spi_probe()
393 	struct mt7621_spi *rs;  in mt7621_spi_remove()  local
396 	rs = spi_controller_get_devdata(master);  in mt7621_spi_remove()
399 	clk_disable_unprepare(rs->clk);  in mt7621_spi_remove()