1 // SPDX-License-Identifier: GPL-2.0+
6  * Copyright (c) 2005-2008 Analog Devices Inc.
28 	u32	control;  member
43 	struct udevice *bus = dev->parent;  in spi_cs_activate()
45 	struct altera_spi_regs *const regs = priv->regs;  in spi_cs_activate()
47 	writel(1 << cs, &regs->slave_sel);  in spi_cs_activate()
48 	writel(ALTERA_SPI_CONTROL_SSO_MSK, &regs->control);  in spi_cs_activate()
53 	struct udevice *bus = dev->parent;  in spi_cs_deactivate()
55 	struct altera_spi_regs *const regs = priv->regs;  in spi_cs_deactivate()
57 	writel(0, &regs->control);  in spi_cs_deactivate()
58 	writel(0, &regs->slave_sel);  in spi_cs_deactivate()
63 	struct udevice *bus = dev->parent;  in altera_spi_claim_bus()
65 	struct altera_spi_regs *const regs = priv->regs;  in altera_spi_claim_bus()
67 	writel(0, &regs->control);  in altera_spi_claim_bus()
68 	writel(0, &regs->slave_sel);  in altera_spi_claim_bus()
75 	struct udevice *bus = dev->parent;  in altera_spi_release_bus()
77 	struct altera_spi_regs *const regs = priv->regs;  in altera_spi_release_bus()
79 	writel(0, &regs->slave_sel);  in altera_spi_release_bus()
87 	struct udevice *bus = dev->parent;  in altera_spi_xfer()
89 	struct altera_spi_regs *const regs = priv->regs;  in altera_spi_xfer()
99 	      bus->seq, slave_plat->cs, bitlen, bytes, flags);  in altera_spi_xfer()
110 	if (readl(&regs->status) & ALTERA_SPI_STATUS_RRDY_MSK)  in altera_spi_xfer()
111 		readl(&regs->rxdata);  in altera_spi_xfer()
114 		spi_cs_activate(dev, slave_plat->cs);  in altera_spi_xfer()
116 	while (bytes--) {  in altera_spi_xfer()
123 		writel(data, &regs->txdata);  in altera_spi_xfer()
127 			reg = readl(&regs->status);  in altera_spi_xfer()
132 				return -1;  in altera_spi_xfer()
136 		data = readl(&regs->rxdata);  in altera_spi_xfer()
165 	priv->regs = plat->regs;  in altera_spi_probe()
174 	plat->regs = map_physmem(devfdt_get_addr(bus),  in altera_spi_ofdata_to_platdata()
194 	{ .compatible = "altr,spi-1.0" },