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drivers/rtc/rtc-sh.c
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/* * SuperH On-Chip RTC Support * |
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* Copyright (C) 2006 - 2009 Paul Mundt |
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* Copyright (C) 2006 Jamie Lenehan |
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* Copyright (C) 2008 Angelo Castello |
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* * Based on the old arch/sh/kernel/cpu/rtc.c by: * * Copyright (C) 2000 Philipp Rumpf <prumpf@tux.org> * Copyright (C) 1999 Tetsuya Okada & Niibe Yutaka * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/bcd.h> #include <linux/rtc.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/seq_file.h> #include <linux/interrupt.h> #include <linux/spinlock.h> |
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#include <linux/io.h> |
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#include <linux/log2.h> |
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#include <linux/clk.h> |
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#include <linux/slab.h> |
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#include <asm/rtc.h> |
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#define DRV_NAME "sh-rtc" |
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#define DRV_VERSION "0.2.3" |
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#define RTC_REG(r) ((r) * rtc_reg_size) |
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#define R64CNT RTC_REG(0) |
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#define RSECCNT RTC_REG(1) /* RTC sec */ #define RMINCNT RTC_REG(2) /* RTC min */ #define RHRCNT RTC_REG(3) /* RTC hour */ #define RWKCNT RTC_REG(4) /* RTC week */ #define RDAYCNT RTC_REG(5) /* RTC day */ #define RMONCNT RTC_REG(6) /* RTC month */ #define RYRCNT RTC_REG(7) /* RTC year */ #define RSECAR RTC_REG(8) /* ALARM sec */ #define RMINAR RTC_REG(9) /* ALARM min */ #define RHRAR RTC_REG(10) /* ALARM hour */ #define RWKAR RTC_REG(11) /* ALARM week */ #define RDAYAR RTC_REG(12) /* ALARM day */ #define RMONAR RTC_REG(13) /* ALARM month */ #define RCR1 RTC_REG(14) /* Control */ #define RCR2 RTC_REG(15) /* Control */ |
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/* * Note on RYRAR and RCR3: Up until this point most of the register * definitions are consistent across all of the available parts. However, * the placement of the optional RYRAR and RCR3 (the RYRAR control * register used to control RYRCNT/RYRAR compare) varies considerably * across various parts, occasionally being mapped in to a completely * unrelated address space. For proper RYRAR support a separate resource * would have to be handed off, but as this is purely optional in * practice, we simply opt not to support it, thereby keeping the code * quite a bit more simplified. */ |
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/* ALARM Bits - or with BCD encoded value */ #define AR_ENB 0x80 /* Enable for alarm cmp */ |
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/* Period Bits */ #define PF_HP 0x100 /* Enable Half Period to support 8,32,128Hz */ #define PF_COUNT 0x200 /* Half periodic counter */ #define PF_OXS 0x400 /* Periodic One x Second */ #define PF_KOU 0x800 /* Kernel or User periodic request 1=kernel */ #define PF_MASK 0xf00 |
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/* RCR1 Bits */ #define RCR1_CF 0x80 /* Carry Flag */ #define RCR1_CIE 0x10 /* Carry Interrupt Enable */ #define RCR1_AIE 0x08 /* Alarm Interrupt Enable */ #define RCR1_AF 0x01 /* Alarm Flag */ /* RCR2 Bits */ #define RCR2_PEF 0x80 /* PEriodic interrupt Flag */ #define RCR2_PESMASK 0x70 /* Periodic interrupt Set */ #define RCR2_RTCEN 0x08 /* ENable RTC */ #define RCR2_ADJ 0x04 /* ADJustment (30-second) */ #define RCR2_RESET 0x02 /* Reset bit */ #define RCR2_START 0x01 /* Start bit */ struct sh_rtc { |
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void __iomem *regbase; unsigned long regsize; struct resource *res; int alarm_irq; int periodic_irq; int carry_irq; struct clk *clk; struct rtc_device *rtc_dev; spinlock_t lock; unsigned long capabilities; /* See asm/rtc.h for cap bits */ unsigned short periodic_freq; |
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}; |
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static int __sh_rtc_interrupt(struct sh_rtc *rtc) |
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{ |
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unsigned int tmp, pending; |
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tmp = readb(rtc->regbase + RCR1); |
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pending = tmp & RCR1_CF; |
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tmp &= ~RCR1_CF; |
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writeb(tmp, rtc->regbase + RCR1); |
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/* Users have requested One x Second IRQ */ |
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if (pending && rtc->periodic_freq & PF_OXS) |
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rtc_update_irq(rtc->rtc_dev, 1, RTC_UF | RTC_IRQF); |
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return pending; |
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} |
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static int __sh_rtc_alarm(struct sh_rtc *rtc) |
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{ |
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unsigned int tmp, pending; |
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tmp = readb(rtc->regbase + RCR1); |
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pending = tmp & RCR1_AF; |
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tmp &= ~(RCR1_AF | RCR1_AIE); |
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writeb(tmp, rtc->regbase + RCR1); |
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if (pending) rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF); |
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return pending; |
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} |
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static int __sh_rtc_periodic(struct sh_rtc *rtc) |
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{ |
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struct rtc_device *rtc_dev = rtc->rtc_dev; |
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struct rtc_task *irq_task; unsigned int tmp, pending; |
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tmp = readb(rtc->regbase + RCR2); |
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pending = tmp & RCR2_PEF; |
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tmp &= ~RCR2_PEF; writeb(tmp, rtc->regbase + RCR2); |
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if (!pending) return 0; |
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/* Half period enabled than one skipped and the next notified */ if ((rtc->periodic_freq & PF_HP) && (rtc->periodic_freq & PF_COUNT)) rtc->periodic_freq &= ~PF_COUNT; else { if (rtc->periodic_freq & PF_HP) rtc->periodic_freq |= PF_COUNT; if (rtc->periodic_freq & PF_KOU) { spin_lock(&rtc_dev->irq_task_lock); |
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irq_task = rtc_dev->irq_task; if (irq_task) irq_task->func(irq_task->private_data); |
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spin_unlock(&rtc_dev->irq_task_lock); } else rtc_update_irq(rtc->rtc_dev, 1, RTC_PF | RTC_IRQF); } |
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return pending; } static irqreturn_t sh_rtc_interrupt(int irq, void *dev_id) { struct sh_rtc *rtc = dev_id; int ret; spin_lock(&rtc->lock); ret = __sh_rtc_interrupt(rtc); spin_unlock(&rtc->lock); return IRQ_RETVAL(ret); } static irqreturn_t sh_rtc_alarm(int irq, void *dev_id) { struct sh_rtc *rtc = dev_id; int ret; spin_lock(&rtc->lock); ret = __sh_rtc_alarm(rtc); spin_unlock(&rtc->lock); return IRQ_RETVAL(ret); } static irqreturn_t sh_rtc_periodic(int irq, void *dev_id) { struct sh_rtc *rtc = dev_id; int ret; spin_lock(&rtc->lock); ret = __sh_rtc_periodic(rtc); |
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spin_unlock(&rtc->lock); |
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return IRQ_RETVAL(ret); } static irqreturn_t sh_rtc_shared(int irq, void *dev_id) { struct sh_rtc *rtc = dev_id; int ret; spin_lock(&rtc->lock); ret = __sh_rtc_interrupt(rtc); ret |= __sh_rtc_alarm(rtc); ret |= __sh_rtc_periodic(rtc); spin_unlock(&rtc->lock); return IRQ_RETVAL(ret); |
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} |
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static int sh_rtc_irq_set_state(struct device *dev, int enable) |
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{ struct sh_rtc *rtc = dev_get_drvdata(dev); unsigned int tmp; spin_lock_irq(&rtc->lock); tmp = readb(rtc->regbase + RCR2); if (enable) { |
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rtc->periodic_freq |= PF_KOU; |
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tmp &= ~RCR2_PEF; /* Clear PES bit */ tmp |= (rtc->periodic_freq & ~PF_HP); /* Set PES2-0 */ |
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} else { rtc->periodic_freq &= ~PF_KOU; |
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tmp &= ~(RCR2_PESMASK | RCR2_PEF); |
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} |
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writeb(tmp, rtc->regbase + RCR2); spin_unlock_irq(&rtc->lock); |
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return 0; |
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} |
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static int sh_rtc_irq_set_freq(struct device *dev, int freq) |
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{ struct sh_rtc *rtc = dev_get_drvdata(dev); |
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int tmp, ret = 0; |
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spin_lock_irq(&rtc->lock); |
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tmp = rtc->periodic_freq & PF_MASK; |
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switch (freq) { case 0: rtc->periodic_freq = 0x00; break; case 1: rtc->periodic_freq = 0x60; break; case 2: rtc->periodic_freq = 0x50; break; case 4: rtc->periodic_freq = 0x40; break; case 8: rtc->periodic_freq = 0x30 | PF_HP; break; case 16: rtc->periodic_freq = 0x30; break; case 32: rtc->periodic_freq = 0x20 | PF_HP; break; case 64: rtc->periodic_freq = 0x20; break; case 128: rtc->periodic_freq = 0x10 | PF_HP; break; case 256: rtc->periodic_freq = 0x10; break; default: ret = -ENOTSUPP; } |
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if (ret == 0) |
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rtc->periodic_freq |= tmp; |
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spin_unlock_irq(&rtc->lock); |
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return ret; |
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} |
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static inline void sh_rtc_setaie(struct device *dev, unsigned int enable) |
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{ struct sh_rtc *rtc = dev_get_drvdata(dev); unsigned int tmp; |
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spin_lock_irq(&rtc->lock); |
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tmp = readb(rtc->regbase + RCR1); |
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if (enable) |
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tmp |= RCR1_AIE; |
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else tmp &= ~RCR1_AIE; |
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writeb(tmp, rtc->regbase + RCR1); |
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spin_unlock_irq(&rtc->lock); |
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} |
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static int sh_rtc_proc(struct device *dev, struct seq_file *seq) { struct sh_rtc *rtc = dev_get_drvdata(dev); unsigned int tmp; tmp = readb(rtc->regbase + RCR1); |
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seq_printf(seq, "carry_IRQ\t: %s ", (tmp & RCR1_CIE) ? "yes" : "no"); |
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tmp = readb(rtc->regbase + RCR2); seq_printf(seq, "periodic_IRQ\t: %s ", |
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(tmp & RCR2_PESMASK) ? "yes" : "no"); |
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return 0; } |
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static inline void sh_rtc_setcie(struct device *dev, unsigned int enable) { struct sh_rtc *rtc = dev_get_drvdata(dev); unsigned int tmp; spin_lock_irq(&rtc->lock); tmp = readb(rtc->regbase + RCR1); if (!enable) tmp &= ~RCR1_CIE; else tmp |= RCR1_CIE; writeb(tmp, rtc->regbase + RCR1); spin_unlock_irq(&rtc->lock); } |
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static int sh_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { sh_rtc_setaie(dev, enabled); return 0; } |
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static int sh_rtc_read_time(struct device *dev, struct rtc_time *tm) { struct platform_device *pdev = to_platform_device(dev); struct sh_rtc *rtc = platform_get_drvdata(pdev); unsigned int sec128, sec2, yr, yr100, cf_bit; do { unsigned int tmp; spin_lock_irq(&rtc->lock); tmp = readb(rtc->regbase + RCR1); tmp &= ~RCR1_CF; /* Clear CF-bit */ tmp |= RCR1_CIE; writeb(tmp, rtc->regbase + RCR1); sec128 = readb(rtc->regbase + R64CNT); |
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tm->tm_sec = bcd2bin(readb(rtc->regbase + RSECCNT)); tm->tm_min = bcd2bin(readb(rtc->regbase + RMINCNT)); tm->tm_hour = bcd2bin(readb(rtc->regbase + RHRCNT)); tm->tm_wday = bcd2bin(readb(rtc->regbase + RWKCNT)); tm->tm_mday = bcd2bin(readb(rtc->regbase + RDAYCNT)); tm->tm_mon = bcd2bin(readb(rtc->regbase + RMONCNT)) - 1; |
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if (rtc->capabilities & RTC_CAP_4_DIGIT_YEAR) { yr = readw(rtc->regbase + RYRCNT); |
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yr100 = bcd2bin(yr >> 8); |
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yr &= 0xff; } else { yr = readb(rtc->regbase + RYRCNT); |
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yr100 = bcd2bin((yr == 0x99) ? 0x19 : 0x20); |
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} |
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tm->tm_year = (yr100 * 100 + bcd2bin(yr)) - 1900; |
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sec2 = readb(rtc->regbase + R64CNT); cf_bit = readb(rtc->regbase + RCR1) & RCR1_CF; spin_unlock_irq(&rtc->lock); } while (cf_bit != 0 || ((sec128 ^ sec2) & RTC_BIT_INVERTED) != 0); #if RTC_BIT_INVERTED != 0 if ((sec128 & RTC_BIT_INVERTED)) tm->tm_sec--; #endif |
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/* only keep the carry interrupt enabled if UIE is on */ if (!(rtc->periodic_freq & PF_OXS)) sh_rtc_setcie(dev, 0); |
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dev_dbg(dev, "%s: tm is secs=%d, mins=%d, hours=%d, " |
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"mday=%d, mon=%d, year=%d, wday=%d ", |
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__func__, |
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tm->tm_sec, tm->tm_min, tm->tm_hour, |
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tm->tm_mday, tm->tm_mon + 1, tm->tm_year, tm->tm_wday); |
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return rtc_valid_tm(tm); |
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} static int sh_rtc_set_time(struct device *dev, struct rtc_time *tm) { struct platform_device *pdev = to_platform_device(dev); struct sh_rtc *rtc = platform_get_drvdata(pdev); unsigned int tmp; int year; spin_lock_irq(&rtc->lock); /* Reset pre-scaler & stop RTC */ tmp = readb(rtc->regbase + RCR2); tmp |= RCR2_RESET; |
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tmp &= ~RCR2_START; |
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writeb(tmp, rtc->regbase + RCR2); |
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writeb(bin2bcd(tm->tm_sec), rtc->regbase + RSECCNT); writeb(bin2bcd(tm->tm_min), rtc->regbase + RMINCNT); writeb(bin2bcd(tm->tm_hour), rtc->regbase + RHRCNT); writeb(bin2bcd(tm->tm_wday), rtc->regbase + RWKCNT); writeb(bin2bcd(tm->tm_mday), rtc->regbase + RDAYCNT); writeb(bin2bcd(tm->tm_mon + 1), rtc->regbase + RMONCNT); |
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if (rtc->capabilities & RTC_CAP_4_DIGIT_YEAR) { |
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year = (bin2bcd((tm->tm_year + 1900) / 100) << 8) | bin2bcd(tm->tm_year % 100); |
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writew(year, rtc->regbase + RYRCNT); } else { year = tm->tm_year % 100; |
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writeb(bin2bcd(year), rtc->regbase + RYRCNT); |
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} |
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/* Start RTC */ tmp = readb(rtc->regbase + RCR2); tmp &= ~RCR2_RESET; tmp |= RCR2_RTCEN | RCR2_START; writeb(tmp, rtc->regbase + RCR2); spin_unlock_irq(&rtc->lock); return 0; } |
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static inline int sh_rtc_read_alarm_value(struct sh_rtc *rtc, int reg_off) { unsigned int byte; int value = 0xff; /* return 0xff for ignored values */ byte = readb(rtc->regbase + reg_off); if (byte & AR_ENB) { byte &= ~AR_ENB; /* strip the enable bit */ |
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value = bcd2bin(byte); |
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} return value; } static int sh_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *wkalrm) { struct platform_device *pdev = to_platform_device(dev); struct sh_rtc *rtc = platform_get_drvdata(pdev); |
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struct rtc_time *tm = &wkalrm->time; |
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spin_lock_irq(&rtc->lock); tm->tm_sec = sh_rtc_read_alarm_value(rtc, RSECAR); tm->tm_min = sh_rtc_read_alarm_value(rtc, RMINAR); tm->tm_hour = sh_rtc_read_alarm_value(rtc, RHRAR); tm->tm_wday = sh_rtc_read_alarm_value(rtc, RWKAR); tm->tm_mday = sh_rtc_read_alarm_value(rtc, RDAYAR); tm->tm_mon = sh_rtc_read_alarm_value(rtc, RMONAR); if (tm->tm_mon > 0) tm->tm_mon -= 1; /* RTC is 1-12, tm_mon is 0-11 */ tm->tm_year = 0xffff; |
0d103e90f [PATCH] rtc-sh: c... |
466 |
wkalrm->enabled = (readb(rtc->regbase + RCR1) & RCR1_AIE) ? 1 : 0; |
1b73e6ae4 rtc: rtc-sh: alar... |
467 468 469 470 471 472 473 474 475 476 477 478 |
spin_unlock_irq(&rtc->lock); return 0; } static inline void sh_rtc_write_alarm_value(struct sh_rtc *rtc, int value, int reg_off) { /* < 0 for a value that is ignored */ if (value < 0) writeb(0, rtc->regbase + reg_off); else |
fe20ba70a drivers/rtc/: use... |
479 |
writeb(bin2bcd(value) | AR_ENB, rtc->regbase + reg_off); |
1b73e6ae4 rtc: rtc-sh: alar... |
480 |
} |
b420b1a7a rtc: rtc-sh: Add ... |
481 |
static int sh_rtc_check_alarm(struct rtc_time *tm) |
1b73e6ae4 rtc: rtc-sh: alar... |
482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 |
{ /* * The original rtc says anything > 0xc0 is "don't care" or "match * all" - most users use 0xff but rtc-dev uses -1 for the same thing. * The original rtc doesn't support years - some things use -1 and * some 0xffff. We use -1 to make out tests easier. */ if (tm->tm_year == 0xffff) tm->tm_year = -1; if (tm->tm_mon >= 0xff) tm->tm_mon = -1; if (tm->tm_mday >= 0xff) tm->tm_mday = -1; if (tm->tm_wday >= 0xff) tm->tm_wday = -1; if (tm->tm_hour >= 0xff) tm->tm_hour = -1; if (tm->tm_min >= 0xff) tm->tm_min = -1; if (tm->tm_sec >= 0xff) tm->tm_sec = -1; if (tm->tm_year > 9999 || tm->tm_mon >= 12 || tm->tm_mday == 0 || tm->tm_mday >= 32 || tm->tm_wday >= 7 || tm->tm_hour >= 24 || tm->tm_min >= 60 || tm->tm_sec >= 60) return -EINVAL; return 0; } static int sh_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *wkalrm) { struct platform_device *pdev = to_platform_device(dev); struct sh_rtc *rtc = platform_get_drvdata(pdev); unsigned int rcr1; struct rtc_time *tm = &wkalrm->time; int mon, err; err = sh_rtc_check_alarm(tm); if (unlikely(err < 0)) return err; spin_lock_irq(&rtc->lock); |
15c945c3d [PATCH] rtc-sh: a... |
529 |
/* disable alarm interrupt and clear the alarm flag */ |
1b73e6ae4 rtc: rtc-sh: alar... |
530 |
rcr1 = readb(rtc->regbase + RCR1); |
b420b1a7a rtc: rtc-sh: Add ... |
531 |
rcr1 &= ~(RCR1_AF | RCR1_AIE); |
15c945c3d [PATCH] rtc-sh: a... |
532 |
writeb(rcr1, rtc->regbase + RCR1); |
1b73e6ae4 rtc: rtc-sh: alar... |
533 |
|
1b73e6ae4 rtc: rtc-sh: alar... |
534 535 536 537 538 539 540 541 542 543 |
/* set alarm time */ sh_rtc_write_alarm_value(rtc, tm->tm_sec, RSECAR); sh_rtc_write_alarm_value(rtc, tm->tm_min, RMINAR); sh_rtc_write_alarm_value(rtc, tm->tm_hour, RHRAR); sh_rtc_write_alarm_value(rtc, tm->tm_wday, RWKAR); sh_rtc_write_alarm_value(rtc, tm->tm_mday, RDAYAR); mon = tm->tm_mon; if (mon >= 0) mon += 1; sh_rtc_write_alarm_value(rtc, mon, RMONAR); |
15c945c3d [PATCH] rtc-sh: a... |
544 545 546 547 |
if (wkalrm->enabled) { rcr1 |= RCR1_AIE; writeb(rcr1, rtc->regbase + RCR1); } |
1b73e6ae4 rtc: rtc-sh: alar... |
548 549 550 551 552 |
spin_unlock_irq(&rtc->lock); return 0; } |
317a6104a rtc: New RTC driv... |
553 |
static struct rtc_class_ops sh_rtc_ops = { |
317a6104a rtc: New RTC driv... |
554 555 |
.read_time = sh_rtc_read_time, .set_time = sh_rtc_set_time, |
1b73e6ae4 rtc: rtc-sh: alar... |
556 557 |
.read_alarm = sh_rtc_read_alarm, .set_alarm = sh_rtc_set_alarm, |
317a6104a rtc: New RTC driv... |
558 |
.proc = sh_rtc_proc, |
16380c153 RTC: Convert rtc ... |
559 |
.alarm_irq_enable = sh_rtc_alarm_irq_enable, |
317a6104a rtc: New RTC driv... |
560 |
}; |
5c9740a8b rtc: rtc-sh fixes |
561 |
static int __init sh_rtc_probe(struct platform_device *pdev) |
317a6104a rtc: New RTC driv... |
562 563 564 |
{ struct sh_rtc *rtc; struct resource *res; |
edf22477d sh: sh-rtc invali... |
565 |
struct rtc_time r; |
063adc750 rtc: rtc-sh: cloc... |
566 567 |
char clk_name[6]; int clk_id, ret; |
317a6104a rtc: New RTC driv... |
568 569 570 571 572 573 |
rtc = kzalloc(sizeof(struct sh_rtc), GFP_KERNEL); if (unlikely(!rtc)) return -ENOMEM; spin_lock_init(&rtc->lock); |
b420b1a7a rtc: rtc-sh: Add ... |
574 |
/* get periodic/carry/alarm irqs */ |
2641dc92b rtc-sh: Unsigned ... |
575 |
ret = platform_get_irq(pdev, 0); |
2fac6674d rtc: bunch of dri... |
576 |
if (unlikely(ret <= 0)) { |
2641dc92b rtc-sh: Unsigned ... |
577 |
ret = -ENOENT; |
5e084a158 rtc: sh-rtc: Add ... |
578 579 |
dev_err(&pdev->dev, "No IRQ resource "); |
317a6104a rtc: New RTC driv... |
580 581 |
goto err_badres; } |
063adc750 rtc: rtc-sh: cloc... |
582 |
|
2641dc92b rtc-sh: Unsigned ... |
583 |
rtc->periodic_irq = ret; |
5e084a158 rtc: sh-rtc: Add ... |
584 585 |
rtc->carry_irq = platform_get_irq(pdev, 1); rtc->alarm_irq = platform_get_irq(pdev, 2); |
317a6104a rtc: New RTC driv... |
586 587 588 |
res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (unlikely(res == NULL)) { |
2641dc92b rtc-sh: Unsigned ... |
589 |
ret = -ENOENT; |
317a6104a rtc: New RTC driv... |
590 591 592 593 |
dev_err(&pdev->dev, "No IO resource "); goto err_badres; } |
063adc750 rtc: rtc-sh: cloc... |
594 |
rtc->regsize = resource_size(res); |
317a6104a rtc: New RTC driv... |
595 596 597 598 599 600 |
rtc->res = request_mem_region(res->start, rtc->regsize, pdev->name); if (unlikely(!rtc->res)) { ret = -EBUSY; goto err_badres; } |
0305794c7 rtc: rtc-sh: Fixu... |
601 |
rtc->regbase = ioremap_nocache(rtc->res->start, rtc->regsize); |
317a6104a rtc: New RTC driv... |
602 603 604 605 |
if (unlikely(!rtc->regbase)) { ret = -EINVAL; goto err_badmap; } |
063adc750 rtc: rtc-sh: cloc... |
606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 |
clk_id = pdev->id; /* With a single device, the clock id is still "rtc0" */ if (clk_id < 0) clk_id = 0; snprintf(clk_name, sizeof(clk_name), "rtc%d", clk_id); rtc->clk = clk_get(&pdev->dev, clk_name); if (IS_ERR(rtc->clk)) { /* * No error handling for rtc->clk intentionally, not all * platforms will have a unique clock for the RTC, and * the clk API can handle the struct clk pointer being * NULL. */ rtc->clk = NULL; } clk_enable(rtc->clk); |
ad89f87a8 rtc: rtc-sh: Supp... |
625 626 627 628 629 630 631 632 633 634 |
rtc->capabilities = RTC_DEF_CAPABILITIES; if (pdev->dev.platform_data) { struct sh_rtc_platform_info *pinfo = pdev->dev.platform_data; /* * Some CPUs have special capabilities in addition to the * default set. Add those in here. */ rtc->capabilities |= pinfo->capabilities; } |
5e084a158 rtc: sh-rtc: Add ... |
635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 |
if (rtc->carry_irq <= 0) { /* register shared periodic/carry/alarm irq */ ret = request_irq(rtc->periodic_irq, sh_rtc_shared, IRQF_DISABLED, "sh-rtc", rtc); if (unlikely(ret)) { dev_err(&pdev->dev, "request IRQ failed with %d, IRQ %d ", ret, rtc->periodic_irq); goto err_unmap; } } else { /* register periodic/carry/alarm irqs */ ret = request_irq(rtc->periodic_irq, sh_rtc_periodic, IRQF_DISABLED, "sh-rtc period", rtc); if (unlikely(ret)) { dev_err(&pdev->dev, "request period IRQ failed with %d, IRQ %d ", ret, rtc->periodic_irq); goto err_unmap; } |
b420b1a7a rtc: rtc-sh: Add ... |
657 |
|
5e084a158 rtc: sh-rtc: Add ... |
658 659 660 661 662 663 664 665 666 667 |
ret = request_irq(rtc->carry_irq, sh_rtc_interrupt, IRQF_DISABLED, "sh-rtc carry", rtc); if (unlikely(ret)) { dev_err(&pdev->dev, "request carry IRQ failed with %d, IRQ %d ", ret, rtc->carry_irq); free_irq(rtc->periodic_irq, rtc); goto err_unmap; } |
b420b1a7a rtc: rtc-sh: Add ... |
668 |
|
5e084a158 rtc: sh-rtc: Add ... |
669 670 671 672 673 674 675 676 677 678 679 |
ret = request_irq(rtc->alarm_irq, sh_rtc_alarm, IRQF_DISABLED, "sh-rtc alarm", rtc); if (unlikely(ret)) { dev_err(&pdev->dev, "request alarm IRQ failed with %d, IRQ %d ", ret, rtc->alarm_irq); free_irq(rtc->carry_irq, rtc); free_irq(rtc->periodic_irq, rtc); goto err_unmap; } |
b420b1a7a rtc: rtc-sh: Add ... |
680 |
} |
5c9740a8b rtc: rtc-sh fixes |
681 |
platform_set_drvdata(pdev, rtc); |
9cd88b90a sh: sh-rtc carry ... |
682 |
/* everything disabled by default */ |
5c9740a8b rtc: rtc-sh fixes |
683 684 |
sh_rtc_irq_set_freq(&pdev->dev, 0); sh_rtc_irq_set_state(&pdev->dev, 0); |
9cd88b90a sh: sh-rtc carry ... |
685 686 |
sh_rtc_setaie(&pdev->dev, 0); sh_rtc_setcie(&pdev->dev, 0); |
edf22477d sh: sh-rtc invali... |
687 |
|
5c9740a8b rtc: rtc-sh fixes |
688 689 690 691 692 693 694 695 696 697 698 |
rtc->rtc_dev = rtc_device_register("sh", &pdev->dev, &sh_rtc_ops, THIS_MODULE); if (IS_ERR(rtc->rtc_dev)) { ret = PTR_ERR(rtc->rtc_dev); free_irq(rtc->periodic_irq, rtc); free_irq(rtc->carry_irq, rtc); free_irq(rtc->alarm_irq, rtc); goto err_unmap; } rtc->rtc_dev->max_user_freq = 256; |
edf22477d sh: sh-rtc invali... |
699 700 701 702 703 |
/* reset rtc to epoch 0 if time is invalid */ if (rtc_read_time(rtc->rtc_dev, &r) < 0) { rtc_time_to_tm(0, &r); rtc_set_time(rtc->rtc_dev, &r); } |
7a8fe8e32 sh: sh-rtc wakeup... |
704 |
device_init_wakeup(&pdev->dev, 1); |
317a6104a rtc: New RTC driv... |
705 |
return 0; |
0305794c7 rtc: rtc-sh: Fixu... |
706 |
err_unmap: |
063adc750 rtc: rtc-sh: cloc... |
707 708 |
clk_disable(rtc->clk); clk_put(rtc->clk); |
0305794c7 rtc: rtc-sh: Fixu... |
709 |
iounmap(rtc->regbase); |
317a6104a rtc: New RTC driv... |
710 |
err_badmap: |
899be96db rtc: rtc-sh - fix... |
711 |
release_mem_region(rtc->res->start, rtc->regsize); |
317a6104a rtc: New RTC driv... |
712 713 714 715 716 |
err_badres: kfree(rtc); return ret; } |
5c9740a8b rtc: rtc-sh fixes |
717 |
static int __exit sh_rtc_remove(struct platform_device *pdev) |
317a6104a rtc: New RTC driv... |
718 719 |
{ struct sh_rtc *rtc = platform_get_drvdata(pdev); |
5c9740a8b rtc: rtc-sh fixes |
720 721 |
rtc_device_unregister(rtc->rtc_dev); sh_rtc_irq_set_state(&pdev->dev, 0); |
317a6104a rtc: New RTC driv... |
722 |
|
317a6104a rtc: New RTC driv... |
723 |
sh_rtc_setaie(&pdev->dev, 0); |
9cd88b90a sh: sh-rtc carry ... |
724 |
sh_rtc_setcie(&pdev->dev, 0); |
317a6104a rtc: New RTC driv... |
725 |
|
b420b1a7a rtc: rtc-sh: Add ... |
726 |
free_irq(rtc->periodic_irq, rtc); |
063adc750 rtc: rtc-sh: cloc... |
727 |
|
5e084a158 rtc: sh-rtc: Add ... |
728 729 730 731 |
if (rtc->carry_irq > 0) { free_irq(rtc->carry_irq, rtc); free_irq(rtc->alarm_irq, rtc); } |
b420b1a7a rtc: rtc-sh: Add ... |
732 |
|
0305794c7 rtc: rtc-sh: Fixu... |
733 |
iounmap(rtc->regbase); |
899be96db rtc: rtc-sh - fix... |
734 |
release_mem_region(rtc->res->start, rtc->regsize); |
0305794c7 rtc: rtc-sh: Fixu... |
735 |
|
063adc750 rtc: rtc-sh: cloc... |
736 737 |
clk_disable(rtc->clk); clk_put(rtc->clk); |
317a6104a rtc: New RTC driv... |
738 739 740 741 742 743 |
platform_set_drvdata(pdev, NULL); kfree(rtc); return 0; } |
faa9fa8e4 rtc: rtc-sh: use ... |
744 745 746 747 748 |
static void sh_rtc_set_irq_wake(struct device *dev, int enabled) { struct platform_device *pdev = to_platform_device(dev); struct sh_rtc *rtc = platform_get_drvdata(pdev); |
dced35aeb drivers: Final ir... |
749 |
irq_set_irq_wake(rtc->periodic_irq, enabled); |
063adc750 rtc: rtc-sh: cloc... |
750 |
|
faa9fa8e4 rtc: rtc-sh: use ... |
751 |
if (rtc->carry_irq > 0) { |
dced35aeb drivers: Final ir... |
752 753 |
irq_set_irq_wake(rtc->carry_irq, enabled); irq_set_irq_wake(rtc->alarm_irq, enabled); |
faa9fa8e4 rtc: rtc-sh: use ... |
754 |
} |
faa9fa8e4 rtc: rtc-sh: use ... |
755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 |
} static int sh_rtc_suspend(struct device *dev) { if (device_may_wakeup(dev)) sh_rtc_set_irq_wake(dev, 1); return 0; } static int sh_rtc_resume(struct device *dev) { if (device_may_wakeup(dev)) sh_rtc_set_irq_wake(dev, 0); return 0; } |
471452104 const: constify r... |
772 |
static const struct dev_pm_ops sh_rtc_dev_pm_ops = { |
faa9fa8e4 rtc: rtc-sh: use ... |
773 774 775 |
.suspend = sh_rtc_suspend, .resume = sh_rtc_resume, }; |
317a6104a rtc: New RTC driv... |
776 777 |
static struct platform_driver sh_rtc_platform_driver = { .driver = { |
1b73e6ae4 rtc: rtc-sh: alar... |
778 |
.name = DRV_NAME, |
317a6104a rtc: New RTC driv... |
779 |
.owner = THIS_MODULE, |
faa9fa8e4 rtc: rtc-sh: use ... |
780 |
.pm = &sh_rtc_dev_pm_ops, |
317a6104a rtc: New RTC driv... |
781 |
}, |
5c9740a8b rtc: rtc-sh fixes |
782 |
.remove = __exit_p(sh_rtc_remove), |
317a6104a rtc: New RTC driv... |
783 784 785 786 |
}; static int __init sh_rtc_init(void) { |
5c9740a8b rtc: rtc-sh fixes |
787 |
return platform_driver_probe(&sh_rtc_platform_driver, sh_rtc_probe); |
317a6104a rtc: New RTC driv... |
788 789 790 791 792 793 794 795 796 797 798 |
} static void __exit sh_rtc_exit(void) { platform_driver_unregister(&sh_rtc_platform_driver); } module_init(sh_rtc_init); module_exit(sh_rtc_exit); MODULE_DESCRIPTION("SuperH on-chip RTC driver"); |
1b73e6ae4 rtc: rtc-sh: alar... |
799 |
MODULE_VERSION(DRV_VERSION); |
b420b1a7a rtc: rtc-sh: Add ... |
800 801 802 |
MODULE_AUTHOR("Paul Mundt <lethal@linux-sh.org>, " "Jamie Lenehan <lenehan@twibble.org>, " "Angelo Castello <angelo.castello@st.com>"); |
317a6104a rtc: New RTC driv... |
803 |
MODULE_LICENSE("GPL"); |
ad28a07bc rtc: fix platform... |
804 |
MODULE_ALIAS("platform:" DRV_NAME); |