1 // SPDX-License-Identifier: GPL-2.0+
43 	dm_gpio_set_value(&plat->sclk, bit);  in soft_spi_scl()
53 	dm_gpio_set_value(&plat->mosi, bit);  in soft_spi_sda()
63 	dm_gpio_set_value(&plat->cs, 0);  in soft_spi_cs_activate()
64 	dm_gpio_set_value(&plat->sclk, 0);  in soft_spi_cs_activate()
65 	dm_gpio_set_value(&plat->cs, 1);  in soft_spi_cs_activate()
75 	dm_gpio_set_value(&plat->cs, 0);  in soft_spi_cs_deactivate()
95 /*-----------------------------------------------------------------------
101  * The source of the outgoing bits is the "dout" parameter and the
102  * destination of the input bits is the "din" parameter.  Note that "dout"
108 			 const void *dout, void *din, unsigned long flags)  in soft_spi_xfer()  argument
115 	const u8	*txd = dout;  in soft_spi_xfer()
117 	int		cpha = priv->mode & SPI_CPHA;  in soft_spi_xfer()
120 	debug("spi_xfer: slave %s:%s dout %08X din %08X bitlen %u\n",  in soft_spi_xfer()
121 	      dev->parent->name, dev->name, *(uint *)txd, *(uint *)rxd,  in soft_spi_xfer()
145 		if ((plat->flags & SPI_MASTER_NO_TX) == 0)  in soft_spi_xfer()
147 		udelay(plat->spi_delay_us);  in soft_spi_xfer()
153 		if ((plat->flags & SPI_MASTER_NO_RX) == 0)  in soft_spi_xfer()
154 			tmpdin	|= dm_gpio_get_value(&plat->miso);  in soft_spi_xfer()
156 		udelay(plat->spi_delay_us);  in soft_spi_xfer()
162 	 * bits over to left-justify them.  Then store the last byte  in soft_spi_xfer()
167 			tmpdin <<= 8 - (bitlen % 8);  in soft_spi_xfer()
187 	priv->mode = mode;  in soft_spi_set_mode()
202 	struct soft_spi_platdata *plat = dev->platdata;  in soft_spi_ofdata_to_platdata()
203 	const void *blob = gd->fdt_blob;  in soft_spi_ofdata_to_platdata()
206 	plat->spi_delay_us = fdtdec_get_int(blob, node, "spi-delay-us", 0);  in soft_spi_ofdata_to_platdata()
214 	struct soft_spi_platdata *plat = dev->platdata;  in soft_spi_probe()
218 	cs_flags = (slave->mode & SPI_CS_HIGH) ? 0 : GPIOD_ACTIVE_LOW;  in soft_spi_probe()
219 	clk_flags = (slave->mode & SPI_CPOL) ? GPIOD_ACTIVE_LOW : 0;  in soft_spi_probe()
221 	if (gpio_request_by_name(dev, "cs-gpios", 0, &plat->cs,  in soft_spi_probe()
223 	    gpio_request_by_name(dev, "gpio-sck", 0, &plat->sclk,  in soft_spi_probe()
225 		return -EINVAL;  in soft_spi_probe()
227 	ret = gpio_request_by_name(dev, "gpio-mosi", 0, &plat->mosi,  in soft_spi_probe()
230 		plat->flags |= SPI_MASTER_NO_TX;  in soft_spi_probe()
232 	ret = gpio_request_by_name(dev, "gpio-miso", 0, &plat->miso,  in soft_spi_probe()
235 		plat->flags |= SPI_MASTER_NO_RX;  in soft_spi_probe()
237 	if ((plat->flags & (SPI_MASTER_NO_RX | SPI_MASTER_NO_TX)) ==  in soft_spi_probe()
239 		return -EINVAL;  in soft_spi_probe()
245 	{ .compatible = "spi-gpio" },