119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
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/*
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* NEC VR4100 series RTC platform device.
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*
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* Copyright (C) 2007 Yoichi Yuasa <yuasa@linux-mips.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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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/smp.h>
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#include <linux/ioport.h>
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#include <linux/platform_device.h>
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#include <asm/cpu.h>
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#include <asm/vr41xx/irq.h>
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static struct resource rtc_type1_resource[] __initdata = {
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{
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.start = 0x0b0000c0,
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.end = 0x0b0000df,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = 0x0b0001c0,
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.end = 0x0b0001df,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = ELAPSEDTIME_IRQ,
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.end = ELAPSEDTIME_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = RTCLONG1_IRQ,
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.end = RTCLONG1_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct resource rtc_type2_resource[] __initdata = {
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{
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.start = 0x0f000100,
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.end = 0x0f00011f,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = 0x0f000120,
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.end = 0x0f00013f,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = ELAPSEDTIME_IRQ,
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.end = ELAPSEDTIME_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = RTCLONG1_IRQ,
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.end = RTCLONG1_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static int __init vr41xx_rtc_add(void)
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{
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struct platform_device *pdev;
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struct resource *res;
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unsigned int num;
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int retval;
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pdev = platform_device_alloc("RTC", -1);
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if (!pdev)
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return -ENOMEM;
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switch (current_cpu_type()) {
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case CPU_VR4111:
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case CPU_VR4121:
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res = rtc_type1_resource;
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num = ARRAY_SIZE(rtc_type1_resource);
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break;
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case CPU_VR4122:
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case CPU_VR4131:
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case CPU_VR4133:
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res = rtc_type2_resource;
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num = ARRAY_SIZE(rtc_type2_resource);
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break;
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default:
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retval = -ENODEV;
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goto err_free_device;
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}
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retval = platform_device_add_resources(pdev, res, num);
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if (retval)
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goto err_free_device;
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retval = platform_device_add(pdev);
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if (retval)
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goto err_free_device;
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return 0;
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err_free_device:
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platform_device_put(pdev);
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return retval;
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}
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device_initcall(vr41xx_rtc_add);
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