18 static inline void loongson_spi_write_reg(struct loongson_spi *spi, unsigned char reg,  in loongson_spi_write_reg()
24 static inline char loongson_spi_read_reg(struct loongson_spi *spi, unsigned char reg)  in loongson_spi_read_reg()
34 	struct loongson_spi *loongson_spi = spi_controller_get_devdata(spi->controller);  in loongson_spi_set_cs()  local
36 	cs = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_SFCS_REG) & ~mask;  in loongson_spi_set_cs()
37 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_SFCS_REG, val | cs);  in loongson_spi_set_cs()
40 static void loongson_spi_set_clk(struct loongson_spi *loongson_spi, unsigned int hz)  in loongson_spi_set_clk()  argument
46 	div = clamp_val(DIV_ROUND_UP_ULL(loongson_spi->clk_rate, hz), 2, 4096);  in loongson_spi_set_clk()
48 	loongson_spi->spcr = (div_tmp & GENMASK(1, 0)) >> 0;  in loongson_spi_set_clk()
49 	loongson_spi->sper = (div_tmp & GENMASK(3, 2)) >> 2;  in loongson_spi_set_clk()
50 	val = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_SPCR_REG);  in loongson_spi_set_clk()
52 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_SPCR_REG, val |  in loongson_spi_set_clk()
53 			       loongson_spi->spcr);  in loongson_spi_set_clk()
54 	val = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_SPER_REG);  in loongson_spi_set_clk()
56 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_SPER_REG, val |  in loongson_spi_set_clk()
57 			       loongson_spi->sper);  in loongson_spi_set_clk()
58 	loongson_spi->hz = hz;  in loongson_spi_set_clk()
61 static void loongson_spi_set_mode(struct loongson_spi *loongson_spi,  in loongson_spi_set_mode()  argument
66 	val = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_SPCR_REG);  in loongson_spi_set_mode()
73 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_SPCR_REG, val);  in loongson_spi_set_mode()
74 	loongson_spi->mode |= spi->mode;  in loongson_spi_set_mode()
77 static int loongson_spi_update_state(struct loongson_spi *loongson_spi,  in loongson_spi_update_state()  argument
80 	if (t && loongson_spi->hz != t->speed_hz)  in loongson_spi_update_state()
81 		loongson_spi_set_clk(loongson_spi, t->speed_hz);  in loongson_spi_update_state()
83 	if ((spi->mode ^ loongson_spi->mode) & SPI_MODE_X_MASK)  in loongson_spi_update_state()
84 		loongson_spi_set_mode(loongson_spi, spi);  in loongson_spi_update_state()
91 	struct loongson_spi *loongson_spi;  in loongson_spi_setup()  local
93 	loongson_spi = spi_controller_get_devdata(spi->controller);  in loongson_spi_setup()
100 	loongson_spi->hz = 0;  in loongson_spi_setup()
110 	struct loongson_spi *loongson_spi = spi_controller_get_devdata(spi->controller);  in loongson_spi_write_read_8bit()  local
113 		loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_FIFO_REG, *((*tx_buf)++));  in loongson_spi_write_read_8bit()
115 		loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_FIFO_REG, 0);  in loongson_spi_write_read_8bit()
117 	ret = readb_poll_timeout(loongson_spi->base + LOONGSON_SPI_SPSR_REG,  in loongson_spi_write_read_8bit()
118 				 loongson_spi->spsr, (loongson_spi->spsr &  in loongson_spi_write_read_8bit()
123 		*(*rx_buf)++ = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_FIFO_REG);  in loongson_spi_write_read_8bit()
125 		loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_FIFO_REG);  in loongson_spi_write_read_8bit()
149 	struct loongson_spi *loongson_spi = spi_controller_get_devdata(ctlr);  in loongson_spi_prepare_message()  local
151 	loongson_spi->para = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_PARA_REG);  in loongson_spi_prepare_message()
152 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_PARA_REG, loongson_spi->para &  in loongson_spi_prepare_message()
161 	struct loongson_spi *loongson_spi = spi_controller_get_devdata(spi->controller);  in loongson_spi_transfer_one()  local
163 	loongson_spi_update_state(loongson_spi, spi, xfer);  in loongson_spi_transfer_one()
172 	struct loongson_spi *loongson_spi = spi_controller_get_devdata(ctrl);  in loongson_spi_unprepare_message()  local
174 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_PARA_REG, loongson_spi->para);  in loongson_spi_unprepare_message()
179 static void loongson_spi_reginit(struct loongson_spi *loongson_spi_dev)  in loongson_spi_reginit()
198 	struct loongson_spi *spi;  in loongson_spi_init_controller()
201 	controller = devm_spi_alloc_host(dev, sizeof(struct loongson_spi));  in loongson_spi_init_controller()
234 	struct loongson_spi *loongson_spi;  in loongson_spi_suspend()  local
240 	loongson_spi = spi_controller_get_devdata(controller);  in loongson_spi_suspend()
242 	loongson_spi->spcr = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_SPCR_REG);  in loongson_spi_suspend()
243 	loongson_spi->sper = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_SPER_REG);  in loongson_spi_suspend()
244 	loongson_spi->spsr = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_SPSR_REG);  in loongson_spi_suspend()
245 	loongson_spi->para = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_PARA_REG);  in loongson_spi_suspend()
246 	loongson_spi->sfcs = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_SFCS_REG);  in loongson_spi_suspend()
247 	loongson_spi->timi = loongson_spi_read_reg(loongson_spi, LOONGSON_SPI_TIMI_REG);  in loongson_spi_suspend()
254 	struct loongson_spi *loongson_spi;  in loongson_spi_resume()  local
258 	loongson_spi = spi_controller_get_devdata(controller);  in loongson_spi_resume()
260 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_SPCR_REG, loongson_spi->spcr);  in loongson_spi_resume()
261 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_SPER_REG, loongson_spi->sper);  in loongson_spi_resume()
262 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_SPSR_REG, loongson_spi->spsr);  in loongson_spi_resume()
263 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_PARA_REG, loongson_spi->para);  in loongson_spi_resume()
264 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_SFCS_REG, loongson_spi->sfcs);  in loongson_spi_resume()
265 	loongson_spi_write_reg(loongson_spi, LOONGSON_SPI_TIMI_REG, loongson_spi->timi);  in loongson_spi_resume()