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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 655 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070034.575739538@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright © 2015 Broadcom Corporation
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*/
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#include <linux/device.h>
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/of_address.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include "brcmnand.h"
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struct bcm63138_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 BCM63138_NAND_INT_STATUS 0x00
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#define BCM63138_NAND_INT_EN 0x04
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enum {
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BCM63138_CTLRDY = BIT(4),
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};
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static bool bcm63138_nand_intc_ack(struct brcmnand_soc *soc)
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{
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struct bcm63138_nand_soc *priv =
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container_of(soc, struct bcm63138_nand_soc, soc);
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void __iomem *mmio = priv->base + BCM63138_NAND_INT_STATUS;
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u32 val = brcmnand_readl(mmio);
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if (val & BCM63138_CTLRDY) {
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brcmnand_writel(val & ~BCM63138_CTLRDY, 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 bcm63138_nand_intc_set(struct brcmnand_soc *soc, bool en)
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{
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struct bcm63138_nand_soc *priv =
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container_of(soc, struct bcm63138_nand_soc, soc);
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void __iomem *mmio = priv->base + BCM63138_NAND_INT_EN;
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u32 val = brcmnand_readl(mmio);
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if (en)
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val |= BCM63138_CTLRDY;
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else
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val &= ~BCM63138_CTLRDY;
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brcmnand_writel(val, mmio);
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}
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static int bcm63138_nand_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct bcm63138_nand_soc *priv;
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struct brcmnand_soc *soc;
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struct resource *res;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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soc = &priv->soc;
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res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "nand-int-base");
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priv->base = devm_ioremap_resource(dev, res);
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if (IS_ERR(priv->base))
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return PTR_ERR(priv->base);
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soc->ctlrdy_ack = bcm63138_nand_intc_ack;
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soc->ctlrdy_set_enabled = bcm63138_nand_intc_set;
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return brcmnand_probe(pdev, soc);
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}
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static const struct of_device_id bcm63138_nand_of_match[] = {
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{ .compatible = "brcm,nand-bcm63138" },
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{},
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};
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MODULE_DEVICE_TABLE(of, bcm63138_nand_of_match);
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static struct platform_driver bcm63138_nand_driver = {
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.probe = bcm63138_nand_probe,
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.remove = brcmnand_remove,
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.driver = {
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.name = "bcm63138_nand",
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.pm = &brcmnand_pm_ops,
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.of_match_table = bcm63138_nand_of_match,
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}
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};
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module_platform_driver(bcm63138_nand_driver);
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MODULE_LICENSE("GPL v2");
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MODULE_AUTHOR("Brian Norris");
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MODULE_DESCRIPTION("NAND driver for BCM63138");
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