diff options
-rw-r--r-- | arch/mips/vr41xx/common/Makefile | 2 | ||||
-rw-r--r-- | arch/mips/vr41xx/common/rtc.c | 117 | ||||
-rw-r--r-- | drivers/rtc/rtc-vr41xx.c | 186 |
3 files changed, 190 insertions, 115 deletions
diff --git a/arch/mips/vr41xx/common/Makefile b/arch/mips/vr41xx/common/Makefile index 22b074e..d0d84ec 100644 --- a/arch/mips/vr41xx/common/Makefile +++ b/arch/mips/vr41xx/common/Makefile @@ -2,4 +2,4 @@ # Makefile for common code of the NEC VR4100 series. # -obj-y += bcu.o cmu.o giu.o icu.o init.o irq.o pmu.o siu.o type.o +obj-y += bcu.o cmu.o giu.o icu.o init.o irq.o pmu.o rtc.o siu.o type.o diff --git a/arch/mips/vr41xx/common/rtc.c b/arch/mips/vr41xx/common/rtc.c new file mode 100644 index 0000000..cce605b --- /dev/null +++ b/arch/mips/vr41xx/common/rtc.c @@ -0,0 +1,117 @@ +/* + * NEC VR4100 series RTC platform device. + * + * Copyright (C) 2007 Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> + * + * 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. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> + +#include <asm/cpu.h> +#include <asm/vr41xx/irq.h> + +static struct resource rtc_type1_resource[] __initdata = { + { + .start = 0x0b0000c0, + .end = 0x0b0000df, + .flags = IORESOURCE_MEM, + }, + { + .start = 0x0b0001c0, + .end = 0x0b0001df, + .flags = IORESOURCE_MEM, + }, + { + .start = ELAPSEDTIME_IRQ, + .end = ELAPSEDTIME_IRQ, + .flags = IORESOURCE_IRQ, + }, + { + .start = RTCLONG1_IRQ, + .end = RTCLONG1_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource rtc_type2_resource[] __initdata = { + { + .start = 0x0f000100, + .end = 0x0f00011f, + .flags = IORESOURCE_MEM, + }, + { + .start = 0x0f000120, + .end = 0x0f00013f, + .flags = IORESOURCE_MEM, + }, + { + .start = ELAPSEDTIME_IRQ, + .end = ELAPSEDTIME_IRQ, + .flags = IORESOURCE_IRQ, + }, + { + .start = RTCLONG1_IRQ, + .end = RTCLONG1_IRQ, + .flags = IORESOURCE_IRQ, + }, +}; + +static int __init vr41xx_rtc_add(void) +{ + struct platform_device *pdev; + struct resource *res; + unsigned int num; + int retval; + + pdev = platform_device_alloc("RTC", -1); + if (!pdev) + return -ENOMEM; + + switch (current_cpu_data.cputype) { + case CPU_VR4111: + case CPU_VR4121: + res = rtc_type1_resource; + num = ARRAY_SIZE(rtc_type1_resource); + break; + case CPU_VR4122: + case CPU_VR4131: + case CPU_VR4133: + res = rtc_type2_resource; + num = ARRAY_SIZE(rtc_type2_resource); + break; + default: + retval = -ENODEV; + goto err_free_device; + } + + retval = platform_device_add_resources(pdev, res, num); + if (retval) + goto err_free_device; + + retval = platform_device_add(pdev); + if (retval) + goto err_free_device; + + return 0; + +err_free_device: + platform_device_put(pdev); + + return retval; +} +device_initcall(vr41xx_rtc_add); diff --git a/drivers/rtc/rtc-vr41xx.c b/drivers/rtc/rtc-vr41xx.c index af7596e..ce2f78d 100644 --- a/drivers/rtc/rtc-vr41xx.c +++ b/drivers/rtc/rtc-vr41xx.c @@ -17,10 +17,11 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include <linux/err.h> #include <linux/fs.h> #include <linux/init.h> #include <linux/ioport.h> -#include <linux/irq.h> +#include <linux/interrupt.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/rtc.h> @@ -30,25 +31,11 @@ #include <asm/div64.h> #include <asm/io.h> #include <asm/uaccess.h> -#include <asm/vr41xx/irq.h> MODULE_AUTHOR("Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>"); MODULE_DESCRIPTION("NEC VR4100 series RTC driver"); MODULE_LICENSE("GPL"); -#define RTC1_TYPE1_START 0x0b0000c0UL -#define RTC1_TYPE1_END 0x0b0000dfUL -#define RTC2_TYPE1_START 0x0b0001c0UL -#define RTC2_TYPE1_END 0x0b0001dfUL - -#define RTC1_TYPE2_START 0x0f000100UL -#define RTC1_TYPE2_END 0x0f00011fUL -#define RTC2_TYPE2_START 0x0f000120UL -#define RTC2_TYPE2_END 0x0f00013fUL - -#define RTC1_SIZE 0x20 -#define RTC2_SIZE 0x20 - /* RTC 1 registers */ #define ETIMELREG 0x00 #define ETIMEMREG 0x02 @@ -98,13 +85,8 @@ static char rtc_name[] = "RTC"; static unsigned long periodic_frequency; static unsigned long periodic_count; static unsigned int alarm_enabled; - -struct resource rtc_resource[2] = { - { .name = rtc_name, - .flags = IORESOURCE_MEM, }, - { .name = rtc_name, - .flags = IORESOURCE_MEM, }, -}; +static int aie_irq = -1; +static int pie_irq = -1; static inline unsigned long read_elapsed_second(void) { @@ -150,8 +132,8 @@ static void vr41xx_rtc_release(struct device *dev) spin_unlock_irq(&rtc_lock); - disable_irq(ELAPSEDTIME_IRQ); - disable_irq(RTCLONG1_IRQ); + disable_irq(aie_irq); + disable_irq(pie_irq); } static int vr41xx_rtc_read_time(struct device *dev, struct rtc_time *time) @@ -209,14 +191,14 @@ static int vr41xx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm) spin_lock_irq(&rtc_lock); if (alarm_enabled) - disable_irq(ELAPSEDTIME_IRQ); + disable_irq(aie_irq); rtc1_write(ECMPLREG, (uint16_t)(alarm_sec << 15)); rtc1_write(ECMPMREG, (uint16_t)(alarm_sec >> 1)); rtc1_write(ECMPHREG, (uint16_t)(alarm_sec >> 17)); if (wkalrm->enabled) - enable_irq(ELAPSEDTIME_IRQ); + enable_irq(aie_irq); alarm_enabled = wkalrm->enabled; @@ -234,7 +216,7 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long spin_lock_irq(&rtc_lock); if (!alarm_enabled) { - enable_irq(ELAPSEDTIME_IRQ); + enable_irq(aie_irq); alarm_enabled = 1; } @@ -244,17 +226,17 @@ static int vr41xx_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long spin_lock_irq(&rtc_lock); if (alarm_enabled) { - disable_irq(ELAPSEDTIME_IRQ); + disable_irq(aie_irq); alarm_enabled = 0; } spin_unlock_irq(&rtc_lock); break; case RTC_PIE_ON: - enable_irq(RTCLONG1_IRQ); + enable_irq(pie_irq); break; case RTC_PIE_OFF: - disable_irq(RTCLONG1_IRQ); + disable_irq(pie_irq); break; case RTC_IRQP_READ: return put_user(periodic_frequency, (unsigned long __user *)arg); @@ -331,31 +313,37 @@ static const struct rtc_class_ops vr41xx_rtc_ops = { static int __devinit rtc_probe(struct platform_device *pdev) { + struct resource *res; struct rtc_device *rtc; - unsigned int irq; int retval; - if (pdev->num_resources != 2) + if (pdev->num_resources != 4) return -EBUSY; - rtc1_base = ioremap(pdev->resource[0].start, RTC1_SIZE); - if (rtc1_base == NULL) + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) return -EBUSY; - rtc2_base = ioremap(pdev->resource[1].start, RTC2_SIZE); - if (rtc2_base == NULL) { - iounmap(rtc1_base); - rtc1_base = NULL; + rtc1_base = ioremap(res->start, res->end - res->start + 1); + if (!rtc1_base) return -EBUSY; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res) { + retval = -EBUSY; + goto err_rtc1_iounmap; + } + + rtc2_base = ioremap(res->start, res->end - res->start + 1); + if (!rtc2_base) { + retval = -EBUSY; + goto err_rtc1_iounmap; } rtc = rtc_device_register(rtc_name, &pdev->dev, &vr41xx_rtc_ops, THIS_MODULE); if (IS_ERR(rtc)) { - iounmap(rtc1_base); - iounmap(rtc2_base); - rtc1_base = NULL; - rtc2_base = NULL; - return PTR_ERR(rtc); + retval = PTR_ERR(rtc); + goto err_iounmap_all; } spin_lock_irq(&rtc_lock); @@ -368,35 +356,50 @@ static int __devinit rtc_probe(struct platform_device *pdev) spin_unlock_irq(&rtc_lock); - irq = ELAPSEDTIME_IRQ; - retval = request_irq(irq, elapsedtime_interrupt, IRQF_DISABLED, - "elapsed_time", pdev); - if (retval == 0) { - irq = RTCLONG1_IRQ; - retval = request_irq(irq, rtclong1_interrupt, IRQF_DISABLED, - "rtclong1", pdev); + aie_irq = platform_get_irq(pdev, 0); + if (aie_irq < 0 || aie_irq >= NR_IRQS) { + retval = -EBUSY; + goto err_device_unregister; } - if (retval < 0) { - printk(KERN_ERR "rtc: IRQ%d is busy\n", irq); - rtc_device_unregister(rtc); - if (irq == RTCLONG1_IRQ) - free_irq(ELAPSEDTIME_IRQ, NULL); - iounmap(rtc1_base); - iounmap(rtc2_base); - rtc1_base = NULL; - rtc2_base = NULL; - return retval; - } + retval = request_irq(aie_irq, elapsedtime_interrupt, IRQF_DISABLED, + "elapsed_time", pdev); + if (retval < 0) + goto err_device_unregister; + + pie_irq = platform_get_irq(pdev, 1); + if (pie_irq < 0 || pie_irq >= NR_IRQS) + goto err_free_irq; + + retval = request_irq(pie_irq, rtclong1_interrupt, IRQF_DISABLED, + "rtclong1", pdev); + if (retval < 0) + goto err_free_irq; platform_set_drvdata(pdev, rtc); - disable_irq(ELAPSEDTIME_IRQ); - disable_irq(RTCLONG1_IRQ); + disable_irq(aie_irq); + disable_irq(pie_irq); printk(KERN_INFO "rtc: Real Time Clock of NEC VR4100 series\n"); return 0; + +err_free_irq: + free_irq(aie_irq, pdev); + +err_device_unregister: + rtc_device_unregister(rtc); + +err_iounmap_all: + iounmap(rtc2_base); + rtc2_base = NULL; + +err_rtc1_iounmap: + iounmap(rtc1_base); + rtc1_base = NULL; + + return retval; } static int __devexit rtc_remove(struct platform_device *pdev) @@ -404,23 +407,21 @@ static int __devexit rtc_remove(struct platform_device *pdev) struct rtc_device *rtc; rtc = platform_get_drvdata(pdev); - if (rtc != NULL) + if (rtc) rtc_device_unregister(rtc); platform_set_drvdata(pdev, NULL); - free_irq(ELAPSEDTIME_IRQ, NULL); - free_irq(RTCLONG1_IRQ, NULL); - if (rtc1_base != NULL) + free_irq(aie_irq, pdev); + free_irq(pie_irq, pdev); + if (rtc1_base) iounmap(rtc1_base); - if (rtc2_base != NULL) + if (rtc2_base) iounmap(rtc2_base); return 0; } -static struct platform_device *rtc_platform_device; - static struct platform_driver rtc_platform_driver = { .probe = rtc_probe, .remove = __devexit_p(rtc_remove), @@ -432,55 +433,12 @@ static struct platform_driver rtc_platform_driver = { static int __init vr41xx_rtc_init(void) { - int retval; - - switch (current_cpu_data.cputype) { - case CPU_VR4111: - case CPU_VR4121: - rtc_resource[0].start = RTC1_TYPE1_START; - rtc_resource[0].end = RTC1_TYPE1_END; - rtc_resource[1].start = RTC2_TYPE1_START; - rtc_resource[1].end = RTC2_TYPE1_END; - break; - case CPU_VR4122: - case CPU_VR4131: - case CPU_VR4133: - rtc_resource[0].start = RTC1_TYPE2_START; - rtc_resource[0].end = RTC1_TYPE2_END; - rtc_resource[1].start = RTC2_TYPE2_START; - rtc_resource[1].end = RTC2_TYPE2_END; - break; - default: - return -ENODEV; - break; - } - - rtc_platform_device = platform_device_alloc("RTC", -1); - if (rtc_platform_device == NULL) - return -ENOMEM; - - retval = platform_device_add_resources(rtc_platform_device, - rtc_resource, ARRAY_SIZE(rtc_resource)); - - if (retval == 0) - retval = platform_device_add(rtc_platform_device); - - if (retval < 0) { - platform_device_put(rtc_platform_device); - return retval; - } - - retval = platform_driver_register(&rtc_platform_driver); - if (retval < 0) - platform_device_unregister(rtc_platform_device); - - return retval; + return platform_driver_register(&rtc_platform_driver); } static void __exit vr41xx_rtc_exit(void) { platform_driver_unregister(&rtc_platform_driver); - platform_device_unregister(rtc_platform_device); } module_init(vr41xx_rtc_init); |