fsl_qspi.c

	if (ret) {
		debug("Error: can't get base addresses (ret = %d)!\n", ret);
		return -ENOMEM;
	}

	/* Count flash numbers */
	fdt_for_each_subnode(blob, subnode, node)
		++flash_num;

	if (flash_num == 0) {
		debug("Error: Missing flashes!\n");
		return -ENODEV;
	}

	plat->speed_hz = fdtdec_get_int(blob, node, "spi-max-frequency",
					FSL_QSPI_DEFAULT_SCK_FREQ);
	plat->num_chipselect = fdtdec_get_int(blob, node, "num-cs",
					      FSL_QSPI_MAX_CHIPSELECT_NUM);

	plat->reg_base = regs_data[0].addr;
	plat->amba_base = regs_data[1].addr;
	plat->amba_total_size = regs_data[1].size;
	plat->flash_num = flash_num;

	debug("%s: regs=<0x%x> <0x%x, 0x%x>, max-frequency=%d, endianess=%s\n",
	      __func__,
	      plat->reg_base,
	      plat->amba_base,
	      plat->amba_total_size,
	      plat->speed_hz,
	      plat->flags & QSPI_FLAG_REGMAP_ENDIAN_BIG ? "be" : "le"
	      );

	return 0;
}

static int fsl_qspi_xfer(struct udevice *dev, unsigned int bitlen,
		const void *dout, void *din, unsigned long flags)
{
	struct fsl_qspi_priv *priv;
	struct udevice *bus;

	bus = dev->parent;
	priv = dev_get_priv(bus);

	return qspi_xfer(priv, bitlen, dout, din, flags);
}

static int fsl_qspi_claim_bus(struct udevice *dev)
{
	struct fsl_qspi_priv *priv;
	struct udevice *bus;
	struct dm_spi_slave_platdata *slave_plat = dev_get_parent_platdata(dev);

	bus = dev->parent;
	priv = dev_get_priv(bus);

	priv->cur_amba_base =
		priv->amba_base[0] + FSL_QSPI_FLASH_SIZE * slave_plat->cs;

	qspi_module_disable(priv, 0);

	return 0;
}

static int fsl_qspi_release_bus(struct udevice *dev)
{
	struct fsl_qspi_priv *priv;
	struct udevice *bus;

	bus = dev->parent;
	priv = dev_get_priv(bus);

	qspi_module_disable(priv, 1);

	return 0;
}

static int fsl_qspi_set_speed(struct udevice *bus, uint speed)
{
	/* Nothing to do */
	return 0;
}

static int fsl_qspi_set_mode(struct udevice *bus, uint mode)
{
	/* Nothing to do */
	return 0;
}

static const struct dm_spi_ops fsl_qspi_ops = {
	.claim_bus	= fsl_qspi_claim_bus,
	.release_bus	= fsl_qspi_release_bus,
	.xfer		= fsl_qspi_xfer,
	.set_speed	= fsl_qspi_set_speed,
	.set_mode	= fsl_qspi_set_mode,
};

static const struct udevice_id fsl_qspi_ids[] = {
	{ .compatible = "fsl,vf610-qspi" },
	{ .compatible = "fsl,imx6sx-qspi" },
	{ }
};

U_BOOT_DRIVER(fsl_qspi) = {
	.name	= "fsl_qspi",
	.id	= UCLASS_SPI,
	.of_match = fsl_qspi_ids,
	.ops	= &fsl_qspi_ops,
	.ofdata_to_platdata = fsl_qspi_ofdata_to_platdata,
	.platdata_auto_alloc_size = sizeof(struct fsl_qspi_platdata),
	.priv_auto_alloc_size = sizeof(struct fsl_qspi_priv),
	.probe	= fsl_qspi_probe,
	.child_pre_probe = fsl_qspi_child_pre_probe,
};
#endif