a507e5d90f
Switch the platform code to use x86_id_table and accompanying API instead of custom comparison against x86 CPU model. This is one of the last users of custom API for that and following changes will remove it for the good. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
76 lines
1.7 KiB
C
76 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Intel Merrifield watchdog platform device library file
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*
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* (C) Copyright 2014 Intel Corporation
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* Author: David Cohen <david.a.cohen@linux.intel.com>
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*/
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/platform_data/intel-mid_wdt.h>
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#include <asm/cpu_device_id.h>
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#include <asm/intel-family.h>
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#include <asm/intel-mid.h>
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#include <asm/io_apic.h>
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#include <asm/hw_irq.h>
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#define TANGIER_EXT_TIMER0_MSI 12
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static struct platform_device wdt_dev = {
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.name = "intel_mid_wdt",
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.id = -1,
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};
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static int tangier_probe(struct platform_device *pdev)
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{
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struct irq_alloc_info info;
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struct intel_mid_wdt_pdata *pdata = pdev->dev.platform_data;
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int gsi = TANGIER_EXT_TIMER0_MSI;
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int irq;
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if (!pdata)
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return -EINVAL;
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/* IOAPIC builds identity mapping between GSI and IRQ on MID */
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ioapic_set_alloc_attr(&info, cpu_to_node(0), 1, 0);
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irq = mp_map_gsi_to_irq(gsi, IOAPIC_MAP_ALLOC, &info);
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if (irq < 0) {
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dev_warn(&pdev->dev, "cannot find interrupt %d in ioapic\n", gsi);
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return irq;
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}
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pdata->irq = irq;
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return 0;
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}
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static struct intel_mid_wdt_pdata tangier_pdata = {
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.probe = tangier_probe,
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};
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static const struct x86_cpu_id intel_mid_cpu_ids[] = {
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X86_MATCH_INTEL_FAM6_MODEL(ATOM_SILVERMONT_MID, &tangier_pdata),
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{}
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};
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static int __init register_mid_wdt(void)
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{
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const struct x86_cpu_id *id;
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id = x86_match_cpu(intel_mid_cpu_ids);
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if (!id)
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return -ENODEV;
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wdt_dev.dev.platform_data = (const struct intel_mid_wdt_pdata *)id->driver_data;
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return platform_device_register(&wdt_dev);
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}
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arch_initcall(register_mid_wdt);
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static void __exit unregister_mid_wdt(void)
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{
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platform_device_unregister(&wdt_dev);
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}
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__exitcall(unregister_mid_wdt);
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