125 static void xlp_spi_sysctl_setup(struct xlp_spi_priv *xspi)  in xlp_spi_sysctl_setup()  argument
130 		xlp_spi_sysctl_write(xspi, XLP_SPI_SYSCTRL,  in xlp_spi_sysctl_setup()
132 	xlp_spi_sysctl_write(xspi, XLP_SPI_SYSCTRL, XLP_SPI_SYS_PMEN);  in xlp_spi_sysctl_setup()
137 	struct xlp_spi_priv *xspi;  in xlp_spi_setup()  local
141 	xspi = spi_controller_get_devdata(spi->controller);  in xlp_spi_setup()
146 	fdiv = DIV_ROUND_UP(xspi->spi_clk, spi->max_speed_hz);  in xlp_spi_setup()
152 	xlp_spi_reg_write(xspi, cs, XLP_SPI_FDIV, fdiv);  in xlp_spi_setup()
153 	xlp_spi_reg_write(xspi, cs, XLP_SPI_FIFO_THRESH, XLP_SPI_TXRXTH);  in xlp_spi_setup()
154 	cfg = xlp_spi_reg_read(xspi, cs, XLP_SPI_CONFIG);  in xlp_spi_setup()
175 	xlp_spi_reg_write(xspi, cs, XLP_SPI_CONFIG, cfg);  in xlp_spi_setup()
180 static void xlp_spi_read_rxfifo(struct xlp_spi_priv *xspi)  in xlp_spi_read_rxfifo()  argument
185 	rxfifo_cnt = xlp_spi_reg_read(xspi, xspi->cs, XLP_SPI_FIFO_WCNT);  in xlp_spi_read_rxfifo()
188 		rx_data = xlp_spi_reg_read(xspi, xspi->cs, XLP_SPI_RXDATA_FIFO);  in xlp_spi_read_rxfifo()
190 		nbytes = min(xspi->rx_len, 4);  in xlp_spi_read_rxfifo()
192 			xspi->rx_buf[i] = (rx_data >> (j * 8)) & 0xff;  in xlp_spi_read_rxfifo()
194 		xspi->rx_len -= nbytes;  in xlp_spi_read_rxfifo()
195 		xspi->rx_buf += nbytes;  in xlp_spi_read_rxfifo()
200 static void xlp_spi_fill_txfifo(struct xlp_spi_priv *xspi)  in xlp_spi_fill_txfifo()  argument
205 	txfifo_cnt = xlp_spi_reg_read(xspi, xspi->cs, XLP_SPI_FIFO_WCNT);  in xlp_spi_fill_txfifo()
208 	while (xspi->tx_len && (txfifo_cnt < XLP_SPI_FIFO_SIZE)) {  in xlp_spi_fill_txfifo()
211 		nbytes = min(xspi->tx_len, 4);  in xlp_spi_fill_txfifo()
213 			tx_data |= xspi->tx_buf[i] << (j * 8);  in xlp_spi_fill_txfifo()
215 		xlp_spi_reg_write(xspi, xspi->cs, XLP_SPI_TXDATA_FIFO, tx_data);  in xlp_spi_fill_txfifo()
216 		xspi->tx_len -= nbytes;  in xlp_spi_fill_txfifo()
217 		xspi->tx_buf += nbytes;  in xlp_spi_fill_txfifo()
224 	struct xlp_spi_priv *xspi = dev_id;  in xlp_spi_interrupt()  local
227 	stat = xlp_spi_reg_read(xspi, xspi->cs, XLP_SPI_STATUS) &  in xlp_spi_interrupt()
233 		if (xspi->tx_len)  in xlp_spi_interrupt()
234 			xlp_spi_fill_txfifo(xspi);  in xlp_spi_interrupt()
236 			xspi->txerrors++;  in xlp_spi_interrupt()
240 		if (xspi->rx_len)  in xlp_spi_interrupt()
241 			xlp_spi_read_rxfifo(xspi);  in xlp_spi_interrupt()
243 			xspi->rxerrors++;  in xlp_spi_interrupt()
247 	xlp_spi_reg_write(xspi, xspi->cs, XLP_SPI_STATUS, stat);  in xlp_spi_interrupt()
249 		complete(&xspi->done);  in xlp_spi_interrupt()
254 static void xlp_spi_send_cmd(struct xlp_spi_priv *xspi, int xfer_len,  in xlp_spi_send_cmd()  argument
259 	if (xspi->tx_buf)  in xlp_spi_send_cmd()
261 	if (xspi->rx_buf)  in xlp_spi_send_cmd()
266 	xlp_spi_reg_write(xspi, xspi->cs, XLP_SPI_CMD, cmd);  in xlp_spi_send_cmd()
350 	struct xlp_spi_priv *xspi = spi_controller_get_devdata(host);  in xlp_spi_transfer_one()  local
353 	xspi->cs = spi_get_chipselect(spi, 0);  in xlp_spi_transfer_one()
354 	xspi->dev = spi->dev;  in xlp_spi_transfer_one()
357 		xspi->cmd_cont = 0;  in xlp_spi_transfer_one()
359 		xspi->cmd_cont = 1;  in xlp_spi_transfer_one()
361 	if (xlp_spi_txrx_bufs(xspi, t))  in xlp_spi_transfer_one()
371 	struct xlp_spi_priv *xspi;  in xlp_spi_probe()  local
375 	xspi = devm_kzalloc(&pdev->dev, sizeof(*xspi), GFP_KERNEL);  in xlp_spi_probe()
376 	if (!xspi)  in xlp_spi_probe()
379 	xspi->base = devm_platform_ioremap_resource(pdev, 0);  in xlp_spi_probe()
380 	if (IS_ERR(xspi->base))  in xlp_spi_probe()
381 		return PTR_ERR(xspi->base);  in xlp_spi_probe()
387 			pdev->name, xspi);  in xlp_spi_probe()
399 	xspi->spi_clk = clk_get_rate(clk);  in xlp_spi_probe()
414 	init_completion(&xspi->done);  in xlp_spi_probe()
415 	spi_controller_set_devdata(host, xspi);  in xlp_spi_probe()
416 	xlp_spi_sysctl_setup(xspi);  in xlp_spi_probe()