44 static inline u8 amd_spi_readreg8(struct spi_master *master, int idx)  in amd_spi_readreg8()  argument
46 	struct amd_spi *amd_spi = spi_master_get_devdata(master);  in amd_spi_readreg8()
51 static inline void amd_spi_writereg8(struct spi_master *master, int idx,  in amd_spi_writereg8()  argument
54 	struct amd_spi *amd_spi = spi_master_get_devdata(master);  in amd_spi_writereg8()
59 static inline void amd_spi_setclear_reg8(struct spi_master *master, int idx,  in amd_spi_setclear_reg8()  argument
62 	u8 tmp = amd_spi_readreg8(master, idx);  in amd_spi_setclear_reg8()
65 	amd_spi_writereg8(master, idx, tmp);  in amd_spi_setclear_reg8()
68 static inline u32 amd_spi_readreg32(struct spi_master *master, int idx)  in amd_spi_readreg32()  argument
70 	struct amd_spi *amd_spi = spi_master_get_devdata(master);  in amd_spi_readreg32()
75 static inline void amd_spi_writereg32(struct spi_master *master, int idx,  in amd_spi_writereg32()  argument
78 	struct amd_spi *amd_spi = spi_master_get_devdata(master);  in amd_spi_writereg32()
83 static inline void amd_spi_setclear_reg32(struct spi_master *master, int idx,  in amd_spi_setclear_reg32()  argument
86 	u32 tmp = amd_spi_readreg32(master, idx);  in amd_spi_setclear_reg32()
89 	amd_spi_writereg32(master, idx, tmp);  in amd_spi_setclear_reg32()
92 static void amd_spi_select_chip(struct spi_master *master)  in amd_spi_select_chip()  argument
94 	struct amd_spi *amd_spi = spi_master_get_devdata(master);  in amd_spi_select_chip()
97 	amd_spi_setclear_reg8(master, AMD_SPI_ALT_CS_REG, chip_select,  in amd_spi_select_chip()
101 static void amd_spi_clear_fifo_ptr(struct spi_master *master)  in amd_spi_clear_fifo_ptr()  argument
103 	amd_spi_setclear_reg32(master, AMD_SPI_CTRL0_REG, AMD_SPI_FIFO_CLEAR,  in amd_spi_clear_fifo_ptr()
107 static void amd_spi_set_opcode(struct spi_master *master, u8 cmd_opcode)  in amd_spi_set_opcode()  argument
109 	amd_spi_setclear_reg32(master, AMD_SPI_CTRL0_REG, cmd_opcode,  in amd_spi_set_opcode()
113 static inline void amd_spi_set_rx_count(struct spi_master *master,  in amd_spi_set_rx_count()  argument
116 	amd_spi_setclear_reg8(master, AMD_SPI_RX_COUNT_REG, rx_count, 0xff);  in amd_spi_set_rx_count()
119 static inline void amd_spi_set_tx_count(struct spi_master *master,  in amd_spi_set_tx_count()  argument
122 	amd_spi_setclear_reg8(master, AMD_SPI_TX_COUNT_REG, tx_count, 0xff);  in amd_spi_set_tx_count()
145 static void amd_spi_execute_opcode(struct spi_master *master)  in amd_spi_execute_opcode()  argument
147 	struct amd_spi *amd_spi = spi_master_get_devdata(master);  in amd_spi_execute_opcode()
150 	amd_spi_setclear_reg32(master, AMD_SPI_CTRL0_REG, AMD_SPI_EXEC_CMD,  in amd_spi_execute_opcode()
158 	struct spi_master *master = spi->master;  in amd_spi_master_setup()  local
160 	amd_spi_clear_fifo_ptr(master);  in amd_spi_master_setup()
166 				    struct spi_master *master,  in amd_spi_fifo_xfer()  argument
188 			amd_spi_set_opcode(master, cmd_opcode);  in amd_spi_fifo_xfer()
197 			amd_spi_set_tx_count(master, tx_len);  in amd_spi_fifo_xfer()
198 			amd_spi_clear_fifo_ptr(master);  in amd_spi_fifo_xfer()
200 			amd_spi_execute_opcode(master);  in amd_spi_fifo_xfer()
209 			amd_spi_set_rx_count(master, rx_len);  in amd_spi_fifo_xfer()
210 			amd_spi_clear_fifo_ptr(master);  in amd_spi_fifo_xfer()
212 			amd_spi_execute_opcode(master);  in amd_spi_fifo_xfer()
215 				buf[i] = amd_spi_readreg8(master,  in amd_spi_fifo_xfer()
225 	spi_finalize_current_message(master);  in amd_spi_fifo_xfer()
230 static int amd_spi_master_transfer(struct spi_master *master,  in amd_spi_master_transfer()  argument
233 	struct amd_spi *amd_spi = spi_master_get_devdata(master);  in amd_spi_master_transfer()
237 	amd_spi_select_chip(master);  in amd_spi_master_transfer()
243 	amd_spi_fifo_xfer(amd_spi, master, msg);  in amd_spi_master_transfer()
251 	struct spi_master *master;  in amd_spi_probe()  local
257 	master = spi_alloc_master(dev, sizeof(struct amd_spi));  in amd_spi_probe()
258 	if (!master) {  in amd_spi_probe()
259 		dev_err(dev, "Error allocating SPI master\n");  in amd_spi_probe()
263 	amd_spi = spi_master_get_devdata(master);  in amd_spi_probe()
275 	master->bus_num = 0;  in amd_spi_probe()
276 	master->num_chipselect = 4;  in amd_spi_probe()
277 	master->mode_bits = 0;  in amd_spi_probe()
278 	master->flags = SPI_MASTER_HALF_DUPLEX;  in amd_spi_probe()
279 	master->setup = amd_spi_master_setup;  in amd_spi_probe()
280 	master->transfer_one_message = amd_spi_master_transfer;  in amd_spi_probe()
283 	err = devm_spi_register_master(dev, master);  in amd_spi_probe()
292 	spi_master_put(master);  in amd_spi_probe()
317 MODULE_DESCRIPTION("AMD SPI Master Controller Driver");