* [PATCH 1/2] rtc: rx8111: demote warnings to debug level
@ 2024-04-17 19:19 alexandre.belloni
2024-04-17 19:19 ` [PATCH 2/2] rtc: rx8111: handle VLOW flag alexandre.belloni
2024-04-19 11:02 ` [PATCH 1/2] rtc: rx8111: demote warnings to debug level Waqar Hameed
0 siblings, 2 replies; 4+ messages in thread
From: alexandre.belloni @ 2024-04-17 19:19 UTC (permalink / raw)
To: Alexandre Belloni; +Cc: Waqar Hameed, linux-rtc, linux-kernel
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
The proper way for userspace to react on a read time error is to have a
look at the voltage low information. There is no point in cluttering dmesg
as it is often not even visible to the end user.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/rtc/rtc-rx8111.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/rtc/rtc-rx8111.c b/drivers/rtc/rtc-rx8111.c
index 62d2352de102..4a35bd921b33 100644
--- a/drivers/rtc/rtc-rx8111.c
+++ b/drivers/rtc/rtc-rx8111.c
@@ -170,14 +170,14 @@ static int rx8111_read_time(struct device *dev, struct rtc_time *tm)
}
if (FIELD_GET(RX8111_FLAG_XST_BIT, regval)) {
- dev_warn(data->dev,
- "Crystal oscillation stopped, time is not reliable\n");
+ dev_dbg(data->dev,
+ "Crystal oscillation stopped, time is not reliable\n");
return -EINVAL;
}
if (FIELD_GET(RX8111_FLAG_VLF_BIT, regval)) {
- dev_warn(data->dev,
- "Low voltage detected, time is not reliable\n");
+ dev_dbg(data->dev,
+ "Low voltage detected, time is not reliable\n");
return -EINVAL;
}
@@ -188,7 +188,7 @@ static int rx8111_read_time(struct device *dev, struct rtc_time *tm)
}
if (regval) {
- dev_warn(data->dev, "Clock stopped, time is not reliable\n");
+ dev_dbg(data->dev, "Clock stopped, time is not reliable\n");
return -EINVAL;
}
--
2.44.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* [PATCH 2/2] rtc: rx8111: handle VLOW flag
2024-04-17 19:19 [PATCH 1/2] rtc: rx8111: demote warnings to debug level alexandre.belloni
@ 2024-04-17 19:19 ` alexandre.belloni
2024-04-19 11:04 ` Waqar Hameed
2024-04-19 11:02 ` [PATCH 1/2] rtc: rx8111: demote warnings to debug level Waqar Hameed
1 sibling, 1 reply; 4+ messages in thread
From: alexandre.belloni @ 2024-04-17 19:19 UTC (permalink / raw)
To: Alexandre Belloni; +Cc: Waqar Hameed, linux-rtc, linux-kernel
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Allow userspace to get battery status information and be able to warn when
battery is low and has to be replaced.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/rtc/rtc-rx8111.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/rtc/rtc-rx8111.c b/drivers/rtc/rtc-rx8111.c
index 4a35bd921b33..8450d9f0b566 100644
--- a/drivers/rtc/rtc-rx8111.c
+++ b/drivers/rtc/rtc-rx8111.c
@@ -95,6 +95,9 @@ enum rx8111_regfield {
RX8111_REGF_INIEN,
RX8111_REGF_CHGEN,
+ /* RX8111_REG_STATUS_MON. */
+ RX8111_REGF_VLOW,
+
/* Sentinel value. */
RX8111_REGF_MAX
};
@@ -129,6 +132,8 @@ static const struct reg_field rx8111_regfields[] = {
[RX8111_REGF_SWSEL1] = REG_FIELD(RX8111_REG_PWR_SWITCH_CTRL, 3, 3),
[RX8111_REGF_INIEN] = REG_FIELD(RX8111_REG_PWR_SWITCH_CTRL, 6, 6),
[RX8111_REGF_CHGEN] = REG_FIELD(RX8111_REG_PWR_SWITCH_CTRL, 7, 7),
+
+ [RX8111_REGF_VLOW] = REG_FIELD(RX8111_REG_STATUS_MON, 1, 1),
};
static const struct regmap_config rx8111_regmap_config = {
@@ -276,6 +281,13 @@ static int rx8111_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
vlval = regval ? RTC_VL_DATA_INVALID : 0;
+ ret = regmap_field_read(data->regfields[RX8111_REGF_VLOW],
+ ®val);
+ if (ret)
+ return ret;
+
+ vlval |= regval ? RTC_VL_BACKUP_LOW : 0;
+
return put_user(vlval, (typeof(vlval) __user *)arg);
default:
return -ENOIOCTLCMD;
--
2.44.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH 1/2] rtc: rx8111: demote warnings to debug level
2024-04-17 19:19 [PATCH 1/2] rtc: rx8111: demote warnings to debug level alexandre.belloni
2024-04-17 19:19 ` [PATCH 2/2] rtc: rx8111: handle VLOW flag alexandre.belloni
@ 2024-04-19 11:02 ` Waqar Hameed
1 sibling, 0 replies; 4+ messages in thread
From: Waqar Hameed @ 2024-04-19 11:02 UTC (permalink / raw)
To: alexandre.belloni; +Cc: linux-rtc, linux-kernel
On Wed, Apr 17, 2024 at 21:19 +0200 alexandre.belloni@bootlin.com wrote:
> From: Alexandre Belloni <alexandre.belloni@bootlin.com>
>
> The proper way for userspace to react on a read time error is to have a
> look at the voltage low information. There is no point in cluttering dmesg
> as it is often not even visible to the end user.
>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
> ---
> drivers/rtc/rtc-rx8111.c | 10 +++++-----
> 1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/rtc/rtc-rx8111.c b/drivers/rtc/rtc-rx8111.c
> index 62d2352de102..4a35bd921b33 100644
> --- a/drivers/rtc/rtc-rx8111.c
> +++ b/drivers/rtc/rtc-rx8111.c
> @@ -170,14 +170,14 @@ static int rx8111_read_time(struct device *dev, struct rtc_time *tm)
> }
>
> if (FIELD_GET(RX8111_FLAG_XST_BIT, regval)) {
> - dev_warn(data->dev,
> - "Crystal oscillation stopped, time is not reliable\n");
> + dev_dbg(data->dev,
> + "Crystal oscillation stopped, time is not reliable\n");
> return -EINVAL;
> }
>
> if (FIELD_GET(RX8111_FLAG_VLF_BIT, regval)) {
> - dev_warn(data->dev,
> - "Low voltage detected, time is not reliable\n");
> + dev_dbg(data->dev,
> + "Low voltage detected, time is not reliable\n");
> return -EINVAL;
> }
>
> @@ -188,7 +188,7 @@ static int rx8111_read_time(struct device *dev, struct rtc_time *tm)
> }
>
> if (regval) {
> - dev_warn(data->dev, "Clock stopped, time is not reliable\n");
> + dev_dbg(data->dev, "Clock stopped, time is not reliable\n");
> return -EINVAL;
> }
There are several other drivers that uses `dev_warn()` in these cases,
and it was just followed here as well. I agree with you here though!
Reviewed-by: Waqar Hameed <waqar.hameed@axis.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH 2/2] rtc: rx8111: handle VLOW flag
2024-04-17 19:19 ` [PATCH 2/2] rtc: rx8111: handle VLOW flag alexandre.belloni
@ 2024-04-19 11:04 ` Waqar Hameed
0 siblings, 0 replies; 4+ messages in thread
From: Waqar Hameed @ 2024-04-19 11:04 UTC (permalink / raw)
To: alexandre.belloni; +Cc: linux-rtc, linux-kernel
On Wed, Apr 17, 2024 at 21:19 +0200 alexandre.belloni@bootlin.com wrote:
> From: Alexandre Belloni <alexandre.belloni@bootlin.com>
>
> Allow userspace to get battery status information and be able to warn when
> battery is low and has to be replaced.
>
> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
> ---
> drivers/rtc/rtc-rx8111.c | 12 ++++++++++++
> 1 file changed, 12 insertions(+)
>
> diff --git a/drivers/rtc/rtc-rx8111.c b/drivers/rtc/rtc-rx8111.c
> index 4a35bd921b33..8450d9f0b566 100644
> --- a/drivers/rtc/rtc-rx8111.c
> +++ b/drivers/rtc/rtc-rx8111.c
> @@ -95,6 +95,9 @@ enum rx8111_regfield {
> RX8111_REGF_INIEN,
> RX8111_REGF_CHGEN,
>
> + /* RX8111_REG_STATUS_MON. */
> + RX8111_REGF_VLOW,
> +
> /* Sentinel value. */
> RX8111_REGF_MAX
> };
> @@ -129,6 +132,8 @@ static const struct reg_field rx8111_regfields[] = {
> [RX8111_REGF_SWSEL1] = REG_FIELD(RX8111_REG_PWR_SWITCH_CTRL, 3, 3),
> [RX8111_REGF_INIEN] = REG_FIELD(RX8111_REG_PWR_SWITCH_CTRL, 6, 6),
> [RX8111_REGF_CHGEN] = REG_FIELD(RX8111_REG_PWR_SWITCH_CTRL, 7, 7),
> +
> + [RX8111_REGF_VLOW] = REG_FIELD(RX8111_REG_STATUS_MON, 1, 1),
> };
>
> static const struct regmap_config rx8111_regmap_config = {
> @@ -276,6 +281,13 @@ static int rx8111_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
>
> vlval = regval ? RTC_VL_DATA_INVALID : 0;
>
> + ret = regmap_field_read(data->regfields[RX8111_REGF_VLOW],
> + ®val);
> + if (ret)
> + return ret;
> +
> + vlval |= regval ? RTC_VL_BACKUP_LOW : 0;
> +
> return put_user(vlval, (typeof(vlval) __user *)arg);
> default:
> return -ENOIOCTLCMD;
Looks good to me!
Tested-by: Waqar Hameed <waqar.hameed@axis.com>
Reviewed-by: Waqar Hameed <waqar.hameed@axis.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
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2024-04-19 11:04 ` Waqar Hameed
2024-04-19 11:02 ` [PATCH 1/2] rtc: rx8111: demote warnings to debug level Waqar Hameed
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