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https://github.com/AsahiLinux/u-boot
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1e94b46f73
This old patch was marked as deferred. Bring it back to life, to continue towards the removal of common.h Move this out of the common header and include it only where needed. Signed-off-by: Simon Glass <sjg@chromium.org>
119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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#include <common.h>
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#include <asm/io.h>
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#include <memalign.h>
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#include <nand.h>
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#include <linux/bitops.h>
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#include <linux/errno.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <dm.h>
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#include <linux/printk.h>
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#include "brcmnand.h"
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struct bcm6368_nand_soc {
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struct brcmnand_soc soc;
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void __iomem *base;
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};
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#define soc_to_priv(_soc) container_of(_soc, struct bcm6368_nand_soc, soc)
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#define BCM6368_NAND_INT 0x00
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#define BCM6368_NAND_STATUS_SHIFT 0
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#define BCM6368_NAND_STATUS_MASK (0xfff << BCM6368_NAND_STATUS_SHIFT)
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#define BCM6368_NAND_ENABLE_SHIFT 16
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#define BCM6368_NAND_ENABLE_MASK (0xffff << BCM6368_NAND_ENABLE_SHIFT)
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enum {
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BCM6368_NP_READ = BIT(0),
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BCM6368_BLOCK_ERASE = BIT(1),
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BCM6368_COPY_BACK = BIT(2),
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BCM6368_PAGE_PGM = BIT(3),
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BCM6368_CTRL_READY = BIT(4),
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BCM6368_DEV_RBPIN = BIT(5),
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BCM6368_ECC_ERR_UNC = BIT(6),
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BCM6368_ECC_ERR_CORR = BIT(7),
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};
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static bool bcm6368_nand_intc_ack(struct brcmnand_soc *soc)
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{
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struct bcm6368_nand_soc *priv = soc_to_priv(soc);
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void __iomem *mmio = priv->base + BCM6368_NAND_INT;
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u32 val = brcmnand_readl(mmio);
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if (val & (BCM6368_CTRL_READY << BCM6368_NAND_STATUS_SHIFT)) {
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/* Ack interrupt */
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val &= ~BCM6368_NAND_STATUS_MASK;
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val |= BCM6368_CTRL_READY << BCM6368_NAND_STATUS_SHIFT;
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brcmnand_writel(val, mmio);
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return true;
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}
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return false;
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}
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static void bcm6368_nand_intc_set(struct brcmnand_soc *soc, bool en)
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{
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struct bcm6368_nand_soc *priv = soc_to_priv(soc);
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void __iomem *mmio = priv->base + BCM6368_NAND_INT;
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u32 val = brcmnand_readl(mmio);
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/* Don't ack any interrupts */
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val &= ~BCM6368_NAND_STATUS_MASK;
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if (en)
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val |= BCM6368_CTRL_READY << BCM6368_NAND_ENABLE_SHIFT;
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else
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val &= ~(BCM6368_CTRL_READY << BCM6368_NAND_ENABLE_SHIFT);
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brcmnand_writel(val, mmio);
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}
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static int bcm6368_nand_probe(struct udevice *dev)
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{
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struct bcm6368_nand_soc *priv = dev_get_priv(dev);
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struct brcmnand_soc *soc = &priv->soc;
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priv->base = dev_remap_addr_name(dev, "nand-int-base");
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if (!priv->base)
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return -EINVAL;
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soc->ctlrdy_ack = bcm6368_nand_intc_ack;
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soc->ctlrdy_set_enabled = bcm6368_nand_intc_set;
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/* Disable and ack all interrupts */
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brcmnand_writel(0, priv->base + BCM6368_NAND_INT);
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brcmnand_writel(BCM6368_NAND_STATUS_MASK,
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priv->base + BCM6368_NAND_INT);
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return brcmnand_probe(dev, soc);
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}
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static const struct udevice_id bcm6368_nand_dt_ids[] = {
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{
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.compatible = "brcm,nand-bcm6368",
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},
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{ /* sentinel */ }
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};
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U_BOOT_DRIVER(bcm6368_nand) = {
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.name = "bcm6368-nand",
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.id = UCLASS_MTD,
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.of_match = bcm6368_nand_dt_ids,
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.probe = bcm6368_nand_probe,
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.priv_auto = sizeof(struct bcm6368_nand_soc),
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};
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void board_nand_init(void)
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{
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struct udevice *dev;
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int ret;
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ret = uclass_get_device_by_driver(UCLASS_MTD,
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DM_DRIVER_GET(bcm6368_nand), &dev);
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if (ret && ret != -ENODEV)
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pr_err("Failed to initialize %s. (error %d)\n", dev->name,
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ret);
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}
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