133 static void xlp_spi_sysctl_setup(struct xlp_spi_priv *xspi)  in xlp_spi_sysctl_setup()  argument
138 		xlp_spi_sysctl_write(xspi, XLP_SPI_SYSCTRL,  in xlp_spi_sysctl_setup()
140 	xlp_spi_sysctl_write(xspi, XLP_SPI_SYSCTRL, XLP_SPI_SYS_PMEN);  in xlp_spi_sysctl_setup()
145 	struct xlp_spi_priv *xspi;  in xlp_spi_setup()  local
149 	xspi = spi_master_get_devdata(spi->master);  in xlp_spi_setup()
154 	fdiv = DIV_ROUND_UP(xspi->spi_clk, spi->max_speed_hz);  in xlp_spi_setup()
160 	xlp_spi_reg_write(xspi, cs, XLP_SPI_FDIV, fdiv);  in xlp_spi_setup()
161 	xlp_spi_reg_write(xspi, cs, XLP_SPI_FIFO_THRESH, XLP_SPI_TXRXTH);  in xlp_spi_setup()
162 	cfg = xlp_spi_reg_read(xspi, cs, XLP_SPI_CONFIG);  in xlp_spi_setup()
183 	xlp_spi_reg_write(xspi, cs, XLP_SPI_CONFIG, cfg);  in xlp_spi_setup()
188 static void xlp_spi_read_rxfifo(struct xlp_spi_priv *xspi)  in xlp_spi_read_rxfifo()  argument
193 	rxfifo_cnt = xlp_spi_reg_read(xspi, xspi->cs, XLP_SPI_FIFO_WCNT);  in xlp_spi_read_rxfifo()
196 		rx_data = xlp_spi_reg_read(xspi, xspi->cs, XLP_SPI_RXDATA_FIFO);  in xlp_spi_read_rxfifo()
198 		nbytes = min(xspi->rx_len, 4);  in xlp_spi_read_rxfifo()
200 			xspi->rx_buf[i] = (rx_data >> (j * 8)) & 0xff;  in xlp_spi_read_rxfifo()
202 		xspi->rx_len -= nbytes;  in xlp_spi_read_rxfifo()
203 		xspi->rx_buf += nbytes;  in xlp_spi_read_rxfifo()
208 static void xlp_spi_fill_txfifo(struct xlp_spi_priv *xspi)  in xlp_spi_fill_txfifo()  argument
213 	txfifo_cnt = xlp_spi_reg_read(xspi, xspi->cs, XLP_SPI_FIFO_WCNT);  in xlp_spi_fill_txfifo()
216 	while (xspi->tx_len && (txfifo_cnt < XLP_SPI_FIFO_SIZE)) {  in xlp_spi_fill_txfifo()
219 		nbytes = min(xspi->tx_len, 4);  in xlp_spi_fill_txfifo()
221 			tx_data |= xspi->tx_buf[i] << (j * 8);  in xlp_spi_fill_txfifo()
223 		xlp_spi_reg_write(xspi, xspi->cs, XLP_SPI_TXDATA_FIFO, tx_data);  in xlp_spi_fill_txfifo()
224 		xspi->tx_len -= nbytes;  in xlp_spi_fill_txfifo()
225 		xspi->tx_buf += nbytes;  in xlp_spi_fill_txfifo()
232 	struct xlp_spi_priv *xspi = dev_id;  in xlp_spi_interrupt()  local
235 	stat = xlp_spi_reg_read(xspi, xspi->cs, XLP_SPI_STATUS) &  in xlp_spi_interrupt()
241 		if (xspi->tx_len)  in xlp_spi_interrupt()
242 			xlp_spi_fill_txfifo(xspi);  in xlp_spi_interrupt()
244 			xspi->txerrors++;  in xlp_spi_interrupt()
248 		if (xspi->rx_len)  in xlp_spi_interrupt()
249 			xlp_spi_read_rxfifo(xspi);  in xlp_spi_interrupt()
251 			xspi->rxerrors++;  in xlp_spi_interrupt()
255 	xlp_spi_reg_write(xspi, xspi->cs, XLP_SPI_STATUS, stat);  in xlp_spi_interrupt()
257 		complete(&xspi->done);  in xlp_spi_interrupt()
262 static void xlp_spi_send_cmd(struct xlp_spi_priv *xspi, int xfer_len,  in xlp_spi_send_cmd()  argument
267 	if (xspi->tx_buf)  in xlp_spi_send_cmd()
269 	if (xspi->rx_buf)  in xlp_spi_send_cmd()
274 	xlp_spi_reg_write(xspi, xspi->cs, XLP_SPI_CMD, cmd);  in xlp_spi_send_cmd()
358 	struct xlp_spi_priv *xspi = spi_master_get_devdata(master);  in xlp_spi_transfer_one()  local
361 	xspi->cs = spi->chip_select;  in xlp_spi_transfer_one()
362 	xspi->dev = spi->dev;  in xlp_spi_transfer_one()
365 		xspi->cmd_cont = 0;  in xlp_spi_transfer_one()
367 		xspi->cmd_cont = 1;  in xlp_spi_transfer_one()
369 	if (xlp_spi_txrx_bufs(xspi, t))  in xlp_spi_transfer_one()
379 	struct xlp_spi_priv *xspi;  in xlp_spi_probe()  local
384 	xspi = devm_kzalloc(&pdev->dev, sizeof(*xspi), GFP_KERNEL);  in xlp_spi_probe()
385 	if (!xspi)  in xlp_spi_probe()
389 	xspi->base = devm_ioremap_resource(&pdev->dev, res);  in xlp_spi_probe()
390 	if (IS_ERR(xspi->base))  in xlp_spi_probe()
391 		return PTR_ERR(xspi->base);  in xlp_spi_probe()
399 			pdev->name, xspi);  in xlp_spi_probe()
410 	xspi->spi_clk = clk_get_rate(clk);  in xlp_spi_probe()
425 	init_completion(&xspi->done);  in xlp_spi_probe()
426 	spi_master_set_devdata(master, xspi);  in xlp_spi_probe()
427 	xlp_spi_sysctl_setup(xspi);  in xlp_spi_probe()