summaryrefslogtreecommitdiffstats
path: root/arch/unicore32
diff options
context:
space:
mode:
Diffstat (limited to 'arch/unicore32')
-rw-r--r--arch/unicore32/Kconfig4
-rw-r--r--arch/unicore32/configs/debug_defconfig6
-rw-r--r--arch/unicore32/kernel/Makefile1
-rw-r--r--arch/unicore32/kernel/rtc.c371
4 files changed, 3 insertions, 379 deletions
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index d3a303246c9f..e57dcce9bfda 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -231,10 +231,6 @@ config PUV3_PWM
help
Enable support for NB0916 PWM controllers
-config PUV3_RTC
- tristate "PKUnity v3 RTC Support"
- depends on !ARCH_FPGA
-
if PUV3_NB0916
menu "PKUnity NetBook-0916 Features"
diff --git a/arch/unicore32/configs/debug_defconfig b/arch/unicore32/configs/debug_defconfig
index b5fbde9f1cb2..9b9c2519a38f 100644
--- a/arch/unicore32/configs/debug_defconfig
+++ b/arch/unicore32/configs/debug_defconfig
@@ -64,7 +64,6 @@ CONFIG_I2C_BATTERY_BQ27200=n
CONFIG_I2C_EEPROM_AT24=n
CONFIG_LCD_BACKLIGHT=n
-CONFIG_PUV3_RTC=y
CONFIG_PUV3_UMAL=y
CONFIG_PUV3_MUSB=n
CONFIG_PUV3_AC97=n
@@ -167,8 +166,9 @@ CONFIG_LEDS_TRIGGER_IDE_DISK=y
CONFIG_LEDS_TRIGGER_HEARTBEAT=y
# Real Time Clock
-CONFIG_RTC_LIB=m
-CONFIG_RTC_CLASS=m
+CONFIG_RTC_LIB=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_PUV3=y
### File systems
CONFIG_EXT2_FS=m
diff --git a/arch/unicore32/kernel/Makefile b/arch/unicore32/kernel/Makefile
index ec23a2fb2f50..aeb0f181568e 100644
--- a/arch/unicore32/kernel/Makefile
+++ b/arch/unicore32/kernel/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_UNICORE_FPU_F64) += fpu-ucf64.o
obj-$(CONFIG_ARCH_PUV3) += clock.o irq.o time.o
obj-$(CONFIG_PUV3_GPIO) += gpio.o
-obj-$(CONFIG_PUV3_RTC) += rtc.o
obj-$(CONFIG_PUV3_PWM) += pwm.o
obj-$(CONFIG_PUV3_PM) += pm.o sleep.o
obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate_asm.o
diff --git a/arch/unicore32/kernel/rtc.c b/arch/unicore32/kernel/rtc.c
deleted file mode 100644
index 8cad70b3302c..000000000000
--- a/arch/unicore32/kernel/rtc.c
+++ /dev/null
@@ -1,371 +0,0 @@
-/*
- * linux/arch/unicore32/kernel/rtc.c
- *
- * Code specific to PKUnity SoC and UniCore ISA
- *
- * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
- * Copyright (C) 2001-2010 Guan Xuetao
- *
- * 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.
- */
-
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-#include <linux/rtc.h>
-#include <linux/bcd.h>
-#include <linux/clk.h>
-#include <linux/log2.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-
-static struct resource *puv3_rtc_mem;
-
-static int puv3_rtc_alarmno = IRQ_RTCAlarm;
-static int puv3_rtc_tickno = IRQ_RTC;
-
-static DEFINE_SPINLOCK(puv3_rtc_pie_lock);
-
-/* IRQ Handlers */
-
-static irqreturn_t puv3_rtc_alarmirq(int irq, void *id)
-{
- struct rtc_device *rdev = id;
-
- writel(readl(RTC_RTSR) | RTC_RTSR_AL, RTC_RTSR);
- rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF);
- return IRQ_HANDLED;
-}
-
-static irqreturn_t puv3_rtc_tickirq(int irq, void *id)
-{
- struct rtc_device *rdev = id;
-
- writel(readl(RTC_RTSR) | RTC_RTSR_HZ, RTC_RTSR);
- rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF);
- return IRQ_HANDLED;
-}
-
-/* Update control registers */
-static void puv3_rtc_setaie(int to)
-{
- unsigned int tmp;
-
- pr_debug("%s: aie=%d\n", __func__, to);
-
- tmp = readl(RTC_RTSR) & ~RTC_RTSR_ALE;
-
- if (to)
- tmp |= RTC_RTSR_ALE;
-
- writel(tmp, RTC_RTSR);
-}
-
-static int puv3_rtc_setpie(struct device *dev, int enabled)
-{
- unsigned int tmp;
-
- pr_debug("%s: pie=%d\n", __func__, enabled);
-
- spin_lock_irq(&puv3_rtc_pie_lock);
- tmp = readl(RTC_RTSR) & ~RTC_RTSR_HZE;
-
- if (enabled)
- tmp |= RTC_RTSR_HZE;
-
- writel(tmp, RTC_RTSR);
- spin_unlock_irq(&puv3_rtc_pie_lock);
-
- return 0;
-}
-
-/* Time read/write */
-
-static int puv3_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
-{
- rtc_time_to_tm(readl(RTC_RCNR), rtc_tm);
-
- pr_debug("read time %02x.%02x.%02x %02x/%02x/%02x\n",
- rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday,
- rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec);
-
- return 0;
-}
-
-static int puv3_rtc_settime(struct device *dev, struct rtc_time *tm)
-{
- unsigned long rtc_count = 0;
-
- pr_debug("set time %02d.%02d.%02d %02d/%02d/%02d\n",
- tm->tm_year, tm->tm_mon, tm->tm_mday,
- tm->tm_hour, tm->tm_min, tm->tm_sec);
-
- rtc_tm_to_time(tm, &rtc_count);
- writel(rtc_count, RTC_RCNR);
-
- return 0;
-}
-
-static int puv3_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
- struct rtc_time *alm_tm = &alrm->time;
-
- rtc_time_to_tm(readl(RTC_RTAR), alm_tm);
-
- alrm->enabled = readl(RTC_RTSR) & RTC_RTSR_ALE;
-
- pr_debug("read alarm %02x %02x.%02x.%02x %02x/%02x/%02x\n",
- alrm->enabled,
- alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
- alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec);
-
- return 0;
-}
-
-static int puv3_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
-{
- struct rtc_time *tm = &alrm->time;
- unsigned long rtcalarm_count = 0;
-
- pr_debug("puv3_rtc_setalarm: %d, %02x/%02x/%02x %02x.%02x.%02x\n",
- alrm->enabled,
- tm->tm_mday & 0xff, tm->tm_mon & 0xff, tm->tm_year & 0xff,
- tm->tm_hour & 0xff, tm->tm_min & 0xff, tm->tm_sec);
-
- rtc_tm_to_time(tm, &rtcalarm_count);
- writel(rtcalarm_count, RTC_RTAR);
-
- puv3_rtc_setaie(alrm->enabled);
-
- if (alrm->enabled)
- enable_irq_wake(puv3_rtc_alarmno);
- else
- disable_irq_wake(puv3_rtc_alarmno);
-
- return 0;
-}
-
-static int puv3_rtc_proc(struct device *dev, struct seq_file *seq)
-{
- seq_printf(seq, "periodic_IRQ\t: %s\n",
- (readl(RTC_RTSR) & RTC_RTSR_HZE) ? "yes" : "no");
- return 0;
-}
-
-static int puv3_rtc_open(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_device *rtc_dev = platform_get_drvdata(pdev);
- int ret;
-
- ret = request_irq(puv3_rtc_alarmno, puv3_rtc_alarmirq,
- IRQF_DISABLED, "pkunity-rtc alarm", rtc_dev);
-
- if (ret) {
- dev_err(dev, "IRQ%d error %d\n", puv3_rtc_alarmno, ret);
- return ret;
- }
-
- ret = request_irq(puv3_rtc_tickno, puv3_rtc_tickirq,
- IRQF_DISABLED, "pkunity-rtc tick", rtc_dev);
-
- if (ret) {
- dev_err(dev, "IRQ%d error %d\n", puv3_rtc_tickno, ret);
- goto tick_err;
- }
-
- return ret;
-
- tick_err:
- free_irq(puv3_rtc_alarmno, rtc_dev);
- return ret;
-}
-
-static void puv3_rtc_release(struct device *dev)
-{
- struct platform_device *pdev = to_platform_device(dev);
- struct rtc_device *rtc_dev = platform_get_drvdata(pdev);
-
- /* do not clear AIE here, it may be needed for wake */
-
- puv3_rtc_setpie(dev, 0);
- free_irq(puv3_rtc_alarmno, rtc_dev);
- free_irq(puv3_rtc_tickno, rtc_dev);
-}
-
-static const struct rtc_class_ops puv3_rtcops = {
- .open = puv3_rtc_open,
- .release = puv3_rtc_release,
- .read_time = puv3_rtc_gettime,
- .set_time = puv3_rtc_settime,
- .read_alarm = puv3_rtc_getalarm,
- .set_alarm = puv3_rtc_setalarm,
- .proc = puv3_rtc_proc,
-};
-
-static void puv3_rtc_enable(struct platform_device *pdev, int en)
-{
- if (!en) {
- writel(readl(RTC_RTSR) & ~RTC_RTSR_HZE, RTC_RTSR);
- } else {
- /* re-enable the device, and check it is ok */
-
- if ((readl(RTC_RTSR) & RTC_RTSR_HZE) == 0) {
- dev_info(&pdev->dev, "rtc disabled, re-enabling\n");
- writel(readl(RTC_RTSR) | RTC_RTSR_HZE, RTC_RTSR);
- }
- }
-}
-
-static int puv3_rtc_remove(struct platform_device *dev)
-{
- struct rtc_device *rtc = platform_get_drvdata(dev);
-
- platform_set_drvdata(dev, NULL);
- rtc_device_unregister(rtc);
-
- puv3_rtc_setpie(&dev->dev, 0);
- puv3_rtc_setaie(0);
-
- release_resource(puv3_rtc_mem);
- kfree(puv3_rtc_mem);
-
- return 0;
-}
-
-static int puv3_rtc_probe(struct platform_device *pdev)
-{
- struct rtc_device *rtc;
- struct resource *res;
- int ret;
-
- pr_debug("%s: probe=%p\n", __func__, pdev);
-
- /* find the IRQs */
-
- puv3_rtc_tickno = platform_get_irq(pdev, 1);
- if (puv3_rtc_tickno < 0) {
- dev_err(&pdev->dev, "no irq for rtc tick\n");
- return -ENOENT;
- }
-
- puv3_rtc_alarmno = platform_get_irq(pdev, 0);
- if (puv3_rtc_alarmno < 0) {
- dev_err(&pdev->dev, "no irq for alarm\n");
- return -ENOENT;
- }
-
- pr_debug("PKUnity_rtc: tick irq %d, alarm irq %d\n",
- puv3_rtc_tickno, puv3_rtc_alarmno);
-
- /* get the memory region */
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "failed to get memory region resource\n");
- return -ENOENT;
- }
-
- puv3_rtc_mem = request_mem_region(res->start,
- res->end-res->start+1,
- pdev->name);
-
- if (puv3_rtc_mem == NULL) {
- dev_err(&pdev->dev, "failed to reserve memory region\n");
- ret = -ENOENT;
- goto err_nores;
- }
-
- puv3_rtc_enable(pdev, 1);
-
- /* register RTC and exit */
-
- rtc = rtc_device_register("pkunity", &pdev->dev, &puv3_rtcops,
- THIS_MODULE);
-
- if (IS_ERR(rtc)) {
- dev_err(&pdev->dev, "cannot attach rtc\n");
- ret = PTR_ERR(rtc);
- goto err_nortc;
- }
-
- /* platform setup code should have handled this; sigh */
- if (!device_can_wakeup(&pdev->dev))
- device_init_wakeup(&pdev->dev, 1);
-
- platform_set_drvdata(pdev, rtc);
- return 0;
-
- err_nortc:
- puv3_rtc_enable(pdev, 0);
- release_resource(puv3_rtc_mem);
-
- err_nores:
- return ret;
-}
-
-#ifdef CONFIG_PM
-
-/* RTC Power management control */
-
-static int ticnt_save;
-
-static int puv3_rtc_suspend(struct platform_device *pdev, pm_message_t state)
-{
- /* save RTAR for anyone using periodic interrupts */
- ticnt_save = readl(RTC_RTAR);
- puv3_rtc_enable(pdev, 0);
- return 0;
-}
-
-static int puv3_rtc_resume(struct platform_device *pdev)
-{
- puv3_rtc_enable(pdev, 1);
- writel(ticnt_save, RTC_RTAR);
- return 0;
-}
-#else
-#define puv3_rtc_suspend NULL
-#define puv3_rtc_resume NULL
-#endif
-
-static struct platform_driver puv3_rtcdrv = {
- .probe = puv3_rtc_probe,
- .remove = __devexit_p(puv3_rtc_remove),
- .suspend = puv3_rtc_suspend,
- .resume = puv3_rtc_resume,
- .driver = {
- .name = "PKUnity-v3-RTC",
- .owner = THIS_MODULE,
- }
-};
-
-static char __initdata banner[] = "PKUnity-v3 RTC, (c) 2009 PKUnity Co.\n";
-
-static int __init puv3_rtc_init(void)
-{
- printk(banner);
- return platform_driver_register(&puv3_rtcdrv);
-}
-
-static void __exit puv3_rtc_exit(void)
-{
- platform_driver_unregister(&puv3_rtcdrv);
-}
-
-module_init(puv3_rtc_init);
-module_exit(puv3_rtc_exit);
-
-MODULE_DESCRIPTION("RTC Driver for the PKUnity v3 chip");
-MODULE_AUTHOR("Hu Dongliang");
-MODULE_LICENSE("GPL v2");
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 21:46:23 +0000