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authorKrzysztof Helt <krzysztof.h1@wp.pl>2008-10-29 15:35:24 -0700
committerDavid S. Miller <davem@davemloft.net>2008-10-29 15:35:24 -0700
commit12a9ee3cce256ae0f178d604f2c8764fb2942cfe (patch)
tree64a3f5bc9185af7b4656894ed57b387d91d44626 /arch/sparc
parentbe376649344ba2c3d00021f8bbf64392aa01ad55 (diff)
rtc-m48t59: shift zero year to 1968 on sparc (rev 2)
Shift the first year to 1968 for Sun SPARC machines. Move this logic from platform specific files to rtc driver as this fixes problems with calculating a century bit. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Tested-by: Alexander Beregalov Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc')
-rw-r--r--arch/sparc/kernel/time.c27
1 files changed, 4 insertions, 23 deletions
diff --git a/arch/sparc/kernel/time.c b/arch/sparc/kernel/time.c
index 62c1d94cb43..00f7383c765 100644
--- a/arch/sparc/kernel/time.c
+++ b/arch/sparc/kernel/time.c
@@ -119,35 +119,16 @@ static unsigned char mostek_read_byte(struct device *dev, u32 ofs)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = pdev->dev.platform_data;
- void __iomem *regs = pdata->ioaddr;
- unsigned char val = readb(regs + ofs);
-
- /* the year 0 is 1968 */
- if (ofs == pdata->offset + M48T59_YEAR) {
- val += 0x68;
- if ((val & 0xf) > 9)
- val += 6;
- }
- return val;
+
+ return readb(pdata->ioaddr + ofs);
}
static void mostek_write_byte(struct device *dev, u32 ofs, u8 val)
{
struct platform_device *pdev = to_platform_device(dev);
struct m48t59_plat_data *pdata = pdev->dev.platform_data;
- void __iomem *regs = pdata->ioaddr;
-
- if (ofs == pdata->offset + M48T59_YEAR) {
- if (val < 0x68)
- val += 0x32;
- else
- val -= 0x68;
- if ((val & 0xf) > 9)
- val += 6;
- if ((val & 0xf0) > 0x9A)
- val += 0x60;
- }
- writeb(val, regs + ofs);
+
+ writeb(val, pdata->ioaddr + ofs);
}
static struct m48t59_plat_data m48t59_data = {