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2874c5fd28
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 as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
136 lines
3.0 KiB
C
136 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* WAX Device Driver
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*
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* (c) Copyright 2000 The Puffin Group Inc.
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*
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* by Helge Deller <deller@gmx.de>
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*/
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <asm/io.h>
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#include <asm/hardware.h>
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#include "gsc.h"
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#define WAX_GSC_IRQ 7 /* Hardcoded Interrupt for GSC */
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static void wax_choose_irq(struct parisc_device *dev, void *ctrl)
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{
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int irq;
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switch (dev->id.sversion) {
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case 0x73: irq = 1; break; /* i8042 General */
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case 0x8c: irq = 6; break; /* Serial */
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case 0x90: irq = 10; break; /* EISA */
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default: return; /* Unknown */
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}
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gsc_asic_assign_irq(ctrl, irq, &dev->irq);
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switch (dev->id.sversion) {
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case 0x73: irq = 2; break; /* i8042 High-priority */
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case 0x90: irq = 0; break; /* EISA NMI */
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default: return; /* No secondary IRQ */
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}
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gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
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}
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static void __init
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wax_init_irq(struct gsc_asic *wax)
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{
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unsigned long base = wax->hpa;
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/* Wax-off */
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gsc_writel(0x00000000, base+OFFSET_IMR);
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/* clear pending interrupts */
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gsc_readl(base+OFFSET_IRR);
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/* We're not really convinced we want to reset the onboard
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* devices. Firmware does it for us...
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*/
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/* Resets */
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// gsc_writel(0xFFFFFFFF, base+0x1000); /* HIL */
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// gsc_writel(0xFFFFFFFF, base+0x2000); /* RS232-B on Wax */
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}
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static int __init wax_init_chip(struct parisc_device *dev)
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{
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struct gsc_asic *wax;
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struct parisc_device *parent;
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struct gsc_irq gsc_irq;
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int ret;
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wax = kzalloc(sizeof(*wax), GFP_KERNEL);
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if (!wax)
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return -ENOMEM;
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wax->name = "wax";
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wax->hpa = dev->hpa.start;
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wax->version = 0; /* gsc_readb(wax->hpa+WAX_VER); */
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printk(KERN_INFO "%s at 0x%lx found.\n", wax->name, wax->hpa);
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/* Stop wax hissing for a bit */
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wax_init_irq(wax);
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/* the IRQ wax should use */
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dev->irq = gsc_claim_irq(&gsc_irq, WAX_GSC_IRQ);
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if (dev->irq < 0) {
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printk(KERN_ERR "%s(): cannot get GSC irq\n",
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__func__);
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kfree(wax);
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return -EBUSY;
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}
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wax->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
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ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "wax", wax);
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if (ret < 0) {
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kfree(wax);
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return ret;
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}
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/* enable IRQ's for devices below WAX */
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gsc_writel(wax->eim, wax->hpa + OFFSET_IAR);
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/* Done init'ing, register this driver */
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ret = gsc_common_setup(dev, wax);
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if (ret) {
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kfree(wax);
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return ret;
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}
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gsc_fixup_irqs(dev, wax, wax_choose_irq);
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/* On 715-class machines, Wax EISA is a sibling of Wax, not a child. */
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parent = parisc_parent(dev);
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if (parent->id.hw_type != HPHW_IOA) {
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gsc_fixup_irqs(parent, wax, wax_choose_irq);
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}
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return ret;
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}
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static const struct parisc_device_id wax_tbl[] __initconst = {
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{ HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008e },
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{ 0, }
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};
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MODULE_DEVICE_TABLE(parisc, wax_tbl);
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struct parisc_driver wax_driver __refdata = {
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.name = "wax",
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.id_table = wax_tbl,
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.probe = wax_init_chip,
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};
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