summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/sh/kernel/cpu/sh4a/setup-sh7722.c1
-rw-r--r--arch/sh/kernel/cpu/sh4a/setup-sh7723.c1
-rw-r--r--arch/sh/kernel/sys_sh.c9
-rw-r--r--drivers/rtc/Kconfig2
-rw-r--r--drivers/rtc/rtc-sh.c67
5 files changed, 59 insertions, 21 deletions
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
index 0e5d204bc79..406747f07dc 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7722.c
@@ -256,7 +256,6 @@ static int __init sh7722_devices_setup(void)
{
clk_always_enable("uram0"); /* URAM */
clk_always_enable("xymem0"); /* XYMEM */
- clk_always_enable("rtc0"); /* RTC */
clk_always_enable("veu0"); /* VEU */
clk_always_enable("vpu0"); /* VPU */
clk_always_enable("jpu0"); /* JPU */
diff --git a/arch/sh/kernel/cpu/sh4a/setup-sh7723.c b/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
index 5338dacbcfb..a800466b938 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-sh7723.c
@@ -267,7 +267,6 @@ static struct platform_device *sh7723_devices[] __initdata = {
static int __init sh7723_devices_setup(void)
{
clk_always_enable("meram0"); /* MERAM */
- clk_always_enable("rtc0"); /* RTC */
clk_always_enable("veu1"); /* VEU2H1 */
clk_always_enable("veu0"); /* VEU2H0 */
clk_always_enable("vpu0"); /* VPU */
diff --git a/arch/sh/kernel/sys_sh.c b/arch/sh/kernel/sys_sh.c
index 58dfc02c7af..e3a7e36639e 100644
--- a/arch/sh/kernel/sys_sh.c
+++ b/arch/sh/kernel/sys_sh.c
@@ -63,6 +63,15 @@ asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags,
unsigned long fd, unsigned long pgoff)
{
+ /*
+ * The shift for mmap2 is constant, regardless of PAGE_SIZE
+ * setting.
+ */
+ if (pgoff & ((1 << (PAGE_SHIFT - 12)) - 1))
+ return -EINVAL;
+
+ pgoff >>= PAGE_SHIFT - 12;
+
return do_mmap2(addr, len, prot, flags, fd, pgoff);
}
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index ffe34a12f44..4e9851fc174 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-sh.c b/drivers/rtc/rtc-sh.c
index 9b1ff12bf94..d7310adb715 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)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-22 03:01:24 +0000