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-rw-r--r--drivers/rtc/rtc-ds1307.c1
-rw-r--r--drivers/rtc/rtc-efi.c1
-rw-r--r--drivers/rtc/rtc-mpc5121.c3
-rw-r--r--drivers/rtc/rtc-pl031.c21
-rw-r--r--drivers/rtc/rtc-r9701.c22
-rw-r--r--drivers/rtc/rtc-s3c.c31
-rw-r--r--drivers/rtc/rtc-twl.c43
7 files changed, 103 insertions, 19 deletions
diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
index cd188ab72f79..c293d0cdb104 100644
--- a/drivers/rtc/rtc-ds1307.c
+++ b/drivers/rtc/rtc-ds1307.c
@@ -902,6 +902,7 @@ read_rtc:
}
ds1307->nvram->attr.name = "nvram";
ds1307->nvram->attr.mode = S_IRUGO | S_IWUSR;
+ sysfs_bin_attr_init(ds1307->nvram);
ds1307->nvram->read = ds1307_nvram_read,
ds1307->nvram->write = ds1307_nvram_write,
ds1307->nvram->size = chip->nvram_size;
diff --git a/drivers/rtc/rtc-efi.c b/drivers/rtc/rtc-efi.c
index 550292304b0f..c9f890b088da 100644
--- a/drivers/rtc/rtc-efi.c
+++ b/drivers/rtc/rtc-efi.c
@@ -213,7 +213,6 @@ static struct platform_driver efi_rtc_driver = {
.name = "rtc-efi",
.owner = THIS_MODULE,
},
- .probe = efi_rtc_probe,
.remove = __exit_p(efi_rtc_remove),
};
diff --git a/drivers/rtc/rtc-mpc5121.c b/drivers/rtc/rtc-mpc5121.c
index 42f5f829b3ee..029e421baaed 100644
--- a/drivers/rtc/rtc-mpc5121.c
+++ b/drivers/rtc/rtc-mpc5121.c
@@ -360,12 +360,11 @@ static int __devinit mpc5121_rtc_probe(struct platform_device *op)
&mpc5200_rtc_ops, THIS_MODULE);
}
- rtc->rtc->uie_unsupported = 1;
-
if (IS_ERR(rtc->rtc)) {
err = PTR_ERR(rtc->rtc);
goto out_free_irq;
}
+ rtc->rtc->uie_unsupported = 1;
return 0;
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index 692de7360e94..f027c063fb20 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -312,6 +312,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
int ret;
struct pl031_local *ldata;
struct rtc_class_ops *ops = id->data;
+ unsigned long time;
ret = amba_request_regions(adev, NULL);
if (ret)
@@ -339,11 +340,27 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
dev_dbg(&adev->dev, "revision = 0x%01x\n", ldata->hw_revision);
/* Enable the clockwatch on ST Variants */
- if ((ldata->hw_designer == AMBA_VENDOR_ST) &&
- (ldata->hw_revision > 1))
+ if (ldata->hw_designer == AMBA_VENDOR_ST)
writel(readl(ldata->base + RTC_CR) | RTC_CR_CWEN,
ldata->base + RTC_CR);
+ /*
+ * On ST PL031 variants, the RTC reset value does not provide correct
+ * weekday for 2000-01-01. Correct the erroneous sunday to saturday.
+ */
+ if (ldata->hw_designer == AMBA_VENDOR_ST) {
+ if (readl(ldata->base + RTC_YDR) == 0x2000) {
+ time = readl(ldata->base + RTC_DR);
+ if ((time &
+ (RTC_MON_MASK | RTC_MDAY_MASK | RTC_WDAY_MASK))
+ == 0x02120000) {
+ time = time | (0x7 << RTC_WDAY_SHIFT);
+ writel(0x2000, ldata->base + RTC_YLR);
+ writel(time, ldata->base + RTC_LR);
+ }
+ }
+ }
+
ldata->rtc = rtc_device_register("pl031", &adev->dev, ops,
THIS_MODULE);
if (IS_ERR(ldata->rtc)) {
diff --git a/drivers/rtc/rtc-r9701.c b/drivers/rtc/rtc-r9701.c
index 7f8e6c247935..33b6ba0afa0d 100644
--- a/drivers/rtc/rtc-r9701.c
+++ b/drivers/rtc/rtc-r9701.c
@@ -122,6 +122,7 @@ static const struct rtc_class_ops r9701_rtc_ops = {
static int __devinit r9701_probe(struct spi_device *spi)
{
struct rtc_device *rtc;
+ struct rtc_time dt;
unsigned char tmp;
int res;
@@ -132,6 +133,27 @@ static int __devinit r9701_probe(struct spi_device *spi)
return -ENODEV;
}
+ /*
+ * The device seems to be present. Now check if the registers
+ * contain invalid values. If so, try to write a default date:
+ * 2000/1/1 00:00:00
+ */
+ r9701_get_datetime(&spi->dev, &dt);
+ if (rtc_valid_tm(&dt)) {
+ dev_info(&spi->dev, "trying to repair invalid date/time\n");
+ dt.tm_sec = 0;
+ dt.tm_min = 0;
+ dt.tm_hour = 0;
+ dt.tm_mday = 1;
+ dt.tm_mon = 0;
+ dt.tm_year = 100;
+
+ if (r9701_set_datetime(&spi->dev, &dt)) {
+ dev_err(&spi->dev, "cannot repair RTC register\n");
+ return -ENODEV;
+ }
+ }
+
rtc = rtc_device_register("r9701",
&spi->dev, &r9701_rtc_ops, THIS_MODULE);
if (IS_ERR(rtc))
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index 9ccea134a996..3f3a29752369 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -40,6 +40,10 @@ enum s3c_cpu_type {
TYPE_S3C64XX,
};
+struct s3c_rtc_drv_data {
+ int cpu_type;
+};
+
/* I have yet to find an S3C implementation with more than one
* of these rtc blocks in */
@@ -446,10 +450,12 @@ static const struct of_device_id s3c_rtc_dt_match[];
static inline int s3c_rtc_get_driver_data(struct platform_device *pdev)
{
#ifdef CONFIG_OF
+ struct s3c_rtc_drv_data *data;
if (pdev->dev.of_node) {
const struct of_device_id *match;
match = of_match_node(s3c_rtc_dt_match, pdev->dev.of_node);
- return match->data;
+ data = (struct s3c_rtc_drv_data *) match->data;
+ return data->cpu_type;
}
#endif
return platform_get_device_id(pdev)->driver_data;
@@ -664,20 +670,27 @@ static int s3c_rtc_resume(struct platform_device *pdev)
#define s3c_rtc_resume NULL
#endif
+static struct s3c_rtc_drv_data s3c_rtc_drv_data_array[] = {
+ [TYPE_S3C2410] = { TYPE_S3C2410 },
+ [TYPE_S3C2416] = { TYPE_S3C2416 },
+ [TYPE_S3C2443] = { TYPE_S3C2443 },
+ [TYPE_S3C64XX] = { TYPE_S3C64XX },
+};
+
#ifdef CONFIG_OF
static const struct of_device_id s3c_rtc_dt_match[] = {
{
- .compatible = "samsung,s3c2410-rtc"
- .data = TYPE_S3C2410,
+ .compatible = "samsung,s3c2410-rtc",
+ .data = &s3c_rtc_drv_data_array[TYPE_S3C2410],
}, {
- .compatible = "samsung,s3c2416-rtc"
- .data = TYPE_S3C2416,
+ .compatible = "samsung,s3c2416-rtc",
+ .data = &s3c_rtc_drv_data_array[TYPE_S3C2416],
}, {
- .compatible = "samsung,s3c2443-rtc"
- .data = TYPE_S3C2443,
+ .compatible = "samsung,s3c2443-rtc",
+ .data = &s3c_rtc_drv_data_array[TYPE_S3C2443],
}, {
- .compatible = "samsung,s3c6410-rtc"
- .data = TYPE_S3C64XX,
+ .compatible = "samsung,s3c6410-rtc",
+ .data = &s3c_rtc_drv_data_array[TYPE_S3C64XX],
},
{},
};
diff --git a/drivers/rtc/rtc-twl.c b/drivers/rtc/rtc-twl.c
index 4c2c6df2a9ef..258abeabf624 100644
--- a/drivers/rtc/rtc-twl.c
+++ b/drivers/rtc/rtc-twl.c
@@ -112,6 +112,7 @@ static const u8 twl6030_rtc_reg_map[] = {
#define BIT_RTC_CTRL_REG_TEST_MODE_M 0x10
#define BIT_RTC_CTRL_REG_SET_32_COUNTER_M 0x20
#define BIT_RTC_CTRL_REG_GET_TIME_M 0x40
+#define BIT_RTC_CTRL_REG_RTC_V_OPT 0x80
/* RTC_STATUS_REG bitfields */
#define BIT_RTC_STATUS_REG_RUN_M 0x02
@@ -235,25 +236,57 @@ static int twl_rtc_read_time(struct device *dev, struct rtc_time *tm)
unsigned char rtc_data[ALL_TIME_REGS + 1];
int ret;
u8 save_control;
+ u8 rtc_control;
ret = twl_rtc_read_u8(&save_control, REG_RTC_CTRL_REG);
- if (ret < 0)
+ if (ret < 0) {
+ dev_err(dev, "%s: reading CTRL_REG, error %d\n", __func__, ret);
return ret;
+ }
+ /* for twl6030/32 make sure BIT_RTC_CTRL_REG_GET_TIME_M is clear */
+ if (twl_class_is_6030()) {
+ if (save_control & BIT_RTC_CTRL_REG_GET_TIME_M) {
+ save_control &= ~BIT_RTC_CTRL_REG_GET_TIME_M;
+ ret = twl_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+ if (ret < 0) {
+ dev_err(dev, "%s clr GET_TIME, error %d\n",
+ __func__, ret);
+ return ret;
+ }
+ }
+ }
- save_control |= BIT_RTC_CTRL_REG_GET_TIME_M;
+ /* Copy RTC counting registers to static registers or latches */
+ rtc_control = save_control | BIT_RTC_CTRL_REG_GET_TIME_M;
- ret = twl_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
- if (ret < 0)
+ /* for twl6030/32 enable read access to static shadowed registers */
+ if (twl_class_is_6030())
+ rtc_control |= BIT_RTC_CTRL_REG_RTC_V_OPT;
+
+ ret = twl_rtc_write_u8(rtc_control, REG_RTC_CTRL_REG);
+ if (ret < 0) {
+ dev_err(dev, "%s: writing CTRL_REG, error %d\n", __func__, ret);
return ret;
+ }
ret = twl_i2c_read(TWL_MODULE_RTC, rtc_data,
(rtc_reg_map[REG_SECONDS_REG]), ALL_TIME_REGS);
if (ret < 0) {
- dev_err(dev, "rtc_read_time error %d\n", ret);
+ dev_err(dev, "%s: reading data, error %d\n", __func__, ret);
return ret;
}
+ /* for twl6030 restore original state of rtc control register */
+ if (twl_class_is_6030()) {
+ ret = twl_rtc_write_u8(save_control, REG_RTC_CTRL_REG);
+ if (ret < 0) {
+ dev_err(dev, "%s: restore CTRL_REG, error %d\n",
+ __func__, ret);
+ return ret;
+ }
+ }
+
tm->tm_sec = bcd2bin(rtc_data[0]);
tm->tm_min = bcd2bin(rtc_data[1]);
tm->tm_hour = bcd2bin(rtc_data[2]);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 21:26:36 +0000