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-rw-r--r--drivers/rtc/Kconfig2
-rw-r--r--drivers/rtc/rtc-cmos.c20
-rw-r--r--drivers/rtc/rtc-sh.c67
-rw-r--r--drivers/rtc/rtc-twl4030.c4
4 files changed, 60 insertions, 33 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index ffe34a12f446..4e9851fc1746 100644
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -573,7 +573,7 @@ config RTC_DRV_SA1100
config RTC_DRV_SH
tristate "SuperH On-Chip RTC"
- depends on RTC_CLASS && SUPERH
+ depends on RTC_CLASS && SUPERH && HAVE_CLK
help
Say Y here to enable support for the on-chip RTC found in
most SuperH processors.
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index b6d35f50e404..23e10b6263d6 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -797,17 +797,15 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
goto cleanup2;
}
- pr_info("%s: alarms up to one %s%s, %zd bytes nvram%s\n",
- dev_name(&cmos_rtc.rtc->dev),
- is_valid_irq(rtc_irq)
- ? (cmos_rtc.mon_alrm
- ? "year"
- : (cmos_rtc.day_alrm
- ? "month" : "day"))
- : "no",
- cmos_rtc.century ? ", y3k" : "",
- nvram.size,
- is_hpet_enabled() ? ", hpet irqs" : "");
+ pr_info("%s: %s%s, %zd bytes nvram%s\n",
+ dev_name(&cmos_rtc.rtc->dev),
+ !is_valid_irq(rtc_irq) ? "no alarms" :
+ cmos_rtc.mon_alrm ? "alarms up to one year" :
+ cmos_rtc.day_alrm ? "alarms up to one month" :
+ "alarms up to one day",
+ cmos_rtc.century ? ", y3k" : "",
+ nvram.size,
+ is_hpet_enabled() ? ", hpet irqs" : "");
return 0;
diff --git a/drivers/rtc/rtc-sh.c b/drivers/rtc/rtc-sh.c
index 9b1ff12bf947..d7310adb7152 100644
--- a/drivers/rtc/rtc-sh.c
+++ b/drivers/rtc/rtc-sh.c
@@ -1,7 +1,7 @@
/*
* SuperH On-Chip RTC Support
*
- * Copyright (C) 2006, 2007, 2008 Paul Mundt
+ * Copyright (C) 2006 - 2009 Paul Mundt
* Copyright (C) 2006 Jamie Lenehan
* Copyright (C) 2008 Angelo Castello
*
@@ -25,10 +25,11 @@
#include <linux/spinlock.h>
#include <linux/io.h>
#include <linux/log2.h>
+#include <linux/clk.h>
#include <asm/rtc.h>
#define DRV_NAME "sh-rtc"
-#define DRV_VERSION "0.2.1"
+#define DRV_VERSION "0.2.2"
#define RTC_REG(r) ((r) * rtc_reg_size)
@@ -87,16 +88,17 @@
#define RCR2_START 0x01 /* Start bit */
struct sh_rtc {
- void __iomem *regbase;
- unsigned long regsize;
- struct resource *res;
- int alarm_irq;
- int periodic_irq;
- int carry_irq;
- struct rtc_device *rtc_dev;
- spinlock_t lock;
- unsigned long capabilities; /* See asm-sh/rtc.h for cap bits */
- unsigned short periodic_freq;
+ 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;
};
static int __sh_rtc_interrupt(struct sh_rtc *rtc)
@@ -294,10 +296,10 @@ static inline void sh_rtc_setaie(struct device *dev, unsigned int enable)
tmp = readb(rtc->regbase + RCR1);
- if (!enable)
- tmp &= ~RCR1_AIE;
- else
+ if (enable)
tmp |= RCR1_AIE;
+ else
+ tmp &= ~RCR1_AIE;
writeb(tmp, rtc->regbase + RCR1);
@@ -618,6 +620,7 @@ static int sh_rtc_irq_set_freq(struct device *dev, int freq)
{
if (!is_power_of_2(freq))
return -EINVAL;
+
return sh_rtc_ioctl(dev, RTC_IRQP_SET, freq);
}
@@ -637,7 +640,8 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
struct sh_rtc *rtc;
struct resource *res;
struct rtc_time r;
- int ret;
+ char clk_name[6];
+ int clk_id, ret;
rtc = kzalloc(sizeof(struct sh_rtc), GFP_KERNEL);
if (unlikely(!rtc))
@@ -652,6 +656,7 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "No IRQ resource\n");
goto err_badres;
}
+
rtc->periodic_irq = ret;
rtc->carry_irq = platform_get_irq(pdev, 1);
rtc->alarm_irq = platform_get_irq(pdev, 2);
@@ -663,7 +668,7 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
goto err_badres;
}
- rtc->regsize = res->end - res->start + 1;
+ rtc->regsize = resource_size(res);
rtc->res = request_mem_region(res->start, rtc->regsize, pdev->name);
if (unlikely(!rtc->res)) {
@@ -677,6 +682,26 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
goto err_badmap;
}
+ 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);
+
rtc->rtc_dev = rtc_device_register("sh", &pdev->dev,
&sh_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc->rtc_dev)) {
@@ -759,6 +784,8 @@ static int __devinit sh_rtc_probe(struct platform_device *pdev)
return 0;
err_unmap:
+ clk_disable(rtc->clk);
+ clk_put(rtc->clk);
iounmap(rtc->regbase);
err_badmap:
release_resource(rtc->res);
@@ -780,6 +807,7 @@ static int __devexit sh_rtc_remove(struct platform_device *pdev)
sh_rtc_setcie(&pdev->dev, 0);
free_irq(rtc->periodic_irq, rtc);
+
if (rtc->carry_irq > 0) {
free_irq(rtc->carry_irq, rtc);
free_irq(rtc->alarm_irq, rtc);
@@ -789,6 +817,9 @@ static int __devexit sh_rtc_remove(struct platform_device *pdev)
iounmap(rtc->regbase);
+ clk_disable(rtc->clk);
+ clk_put(rtc->clk);
+
platform_set_drvdata(pdev, NULL);
kfree(rtc);
@@ -802,11 +833,11 @@ static void sh_rtc_set_irq_wake(struct device *dev, int enabled)
struct sh_rtc *rtc = platform_get_drvdata(pdev);
set_irq_wake(rtc->periodic_irq, enabled);
+
if (rtc->carry_irq > 0) {
set_irq_wake(rtc->carry_irq, enabled);
set_irq_wake(rtc->alarm_irq, enabled);
}
-
}
static int sh_rtc_suspend(struct device *dev)
diff --git a/drivers/rtc/rtc-twl4030.c b/drivers/rtc/rtc-twl4030.c
index a6341e4f9a0f..9c8c70c497dc 100644
--- a/drivers/rtc/rtc-twl4030.c
+++ b/drivers/rtc/rtc-twl4030.c
@@ -495,9 +495,7 @@ static int twl4030_rtc_suspend(struct platform_device *pdev, pm_message_t state)
{
irqstat = rtc_irq_bits;
- /* REVISIT alarm may need to wake us from sleep */
- mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M |
- BIT_RTC_INTERRUPTS_REG_IT_ALARM_M);
+ mask_rtc_irq_bit(BIT_RTC_INTERRUPTS_REG_IT_TIMER_M);
return 0;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-21 07:28:03 +0300