From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: Alessandro Zummo <a.zummo@towertech.it>,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
linux-rtc@vger.kernel.org,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
linux-kernel@vger.kernel.org
Subject: [PATCH v3 5/8] rtc: isl12022: implement RTC_VL_READ ioctl
Date: Thu, 15 Jun 2023 12:58:23 +0200 [thread overview]
Message-ID: <20230615105826.411953-6-linux@rasmusvillemoes.dk> (raw)
In-Reply-To: <20230615105826.411953-1-linux@rasmusvillemoes.dk>
Hook up support for reading the values of the SR_LBAT85 and SR_LBAT75
bits. Translate the former to "battery low", and the latter to
"battery empty or not-present".
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
drivers/rtc/rtc-isl12022.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c
index 6a757f0a4736..a48456abdcb9 100644
--- a/drivers/rtc/rtc-isl12022.c
+++ b/drivers/rtc/rtc-isl12022.c
@@ -204,7 +204,34 @@ static int isl12022_rtc_set_time(struct device *dev, struct rtc_time *tm)
return regmap_bulk_write(regmap, ISL12022_REG_SC, buf, sizeof(buf));
}
+static int isl12022_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
+{
+ struct regmap *regmap = dev_get_drvdata(dev);
+ u32 user, val;
+ int ret;
+
+ switch (cmd) {
+ case RTC_VL_READ:
+ ret = regmap_read(regmap, ISL12022_REG_SR, &val);
+ if (ret)
+ return ret;
+
+ user = 0;
+ if (val & ISL12022_SR_LBAT85)
+ user |= RTC_VL_BACKUP_LOW;
+
+ if (val & ISL12022_SR_LBAT75)
+ user |= RTC_VL_BACKUP_EMPTY;
+
+ return put_user(user, (u32 __user *)arg);
+
+ default:
+ return -ENOIOCTLCMD;
+ }
+}
+
static const struct rtc_class_ops isl12022_rtc_ops = {
+ .ioctl = isl12022_rtc_ioctl,
.read_time = isl12022_rtc_read_time,
.set_time = isl12022_rtc_set_time,
};
--
2.37.2
next prev parent reply other threads:[~2023-06-15 10:59 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-12 11:30 [PATCH 0/8] rtc: isl12022: battery backup voltage and clock support Rasmus Villemoes
2023-06-12 11:30 ` [PATCH 1/8] rtc: isl12022: remove wrong warning for low battery level Rasmus Villemoes
2023-06-12 11:30 ` [PATCH 2/8] dt-bindings: rtc: Move isil,isl12022 from trivial-rtc.yaml into own schema file Rasmus Villemoes
2023-06-12 12:26 ` Rob Herring
2023-06-12 12:36 ` Rasmus Villemoes
2023-06-12 13:54 ` Alexandre Belloni
2023-06-12 14:20 ` Rob Herring
2023-06-13 8:13 ` Rasmus Villemoes
2023-06-12 11:30 ` [PATCH 3/8] dt-bindings: rtc: isl12022: add bindings for battery alarm trip levels Rasmus Villemoes
2023-06-12 11:30 ` [PATCH 4/8] rtc: isl12022: add support for trip level DT bindings Rasmus Villemoes
2023-06-12 15:44 ` Andy Shevchenko
2023-06-12 18:10 ` kernel test robot
2023-06-12 18:58 ` kernel test robot
2023-06-12 11:30 ` [PATCH 5/8] rtc: isl12022: implement RTC_VL_READ and RTC_VL_CLR ioctls Rasmus Villemoes
2023-06-12 14:07 ` Alexandre Belloni
2023-06-13 7:27 ` Rasmus Villemoes
2023-06-12 15:48 ` Andy Shevchenko
2023-06-12 16:10 ` Alexandre Belloni
2023-06-13 7:53 ` Rasmus Villemoes
2023-06-13 9:00 ` Alexandre Belloni
2023-06-12 11:30 ` [PATCH 6/8] rtc: isl12022: trigger battery level detection during probe Rasmus Villemoes
2023-06-12 12:30 ` Rasmus Villemoes
2023-06-12 14:17 ` Alexandre Belloni
2023-06-13 7:51 ` Rasmus Villemoes
2023-06-12 14:15 ` Alexandre Belloni
2023-06-13 7:44 ` Rasmus Villemoes
2023-06-13 8:58 ` Alexandre Belloni
2023-06-12 11:30 ` [PATCH 7/8] dt-bindings: rtc: isl12022: add #clock-cells property Rasmus Villemoes
2023-06-13 7:41 ` Krzysztof Kozlowski
2023-06-12 11:30 ` [PATCH 8/8] rtc: isl12022: implement support for the #clock-cells DT property Rasmus Villemoes
2023-06-13 13:00 ` [PATCH v2 0/8] rtc: isl12022: battery backup voltage and clock support Rasmus Villemoes
2023-06-13 13:00 ` [PATCH v2 1/8] rtc: isl12022: remove wrong warning for low battery level Rasmus Villemoes
2023-06-13 13:00 ` [PATCH v2 2/8] dt-bindings: rtc: Move isil,isl12022 from trivial-rtc.yaml into own schema file Rasmus Villemoes
2023-06-13 19:06 ` Krzysztof Kozlowski
2023-06-13 13:00 ` [PATCH v2 3/8] dt-bindings: rtc: isl12022: add bindings for battery alarm trip levels Rasmus Villemoes
2023-06-13 19:09 ` Krzysztof Kozlowski
2023-06-13 19:51 ` Rasmus Villemoes
2023-06-13 21:37 ` Krzysztof Kozlowski
2023-06-13 13:00 ` [PATCH v2 4/8] rtc: isl12022: add support for trip level DT bindings Rasmus Villemoes
2023-06-13 13:00 ` [PATCH v2 5/8] rtc: isl12022: implement RTC_VL_READ ioctl Rasmus Villemoes
2023-06-13 15:20 ` Andy Shevchenko
2023-06-13 21:26 ` Alexandre Belloni
2023-06-14 12:16 ` Andy Shevchenko
2023-06-14 13:50 ` Alexandre Belloni
2023-06-14 15:13 ` Andy Shevchenko
2023-06-15 10:53 ` Rasmus Villemoes
2023-06-15 10:58 ` Andy Shevchenko
2023-06-13 13:00 ` [PATCH v2 6/8] rtc: isl12022: trigger battery level detection during probe Rasmus Villemoes
2023-06-13 13:00 ` [PATCH v2 7/8] dt-bindings: rtc: isl12022: add #clock-cells property Rasmus Villemoes
2023-06-13 19:10 ` Krzysztof Kozlowski
2023-06-13 20:25 ` Rasmus Villemoes
2023-06-13 21:38 ` Krzysztof Kozlowski
2023-06-13 13:00 ` [PATCH v2 8/8] rtc: isl12022: implement support for the #clock-cells DT property Rasmus Villemoes
2023-06-13 15:25 ` Andy Shevchenko
2023-06-14 10:51 ` Rasmus Villemoes
2023-06-14 12:13 ` Andy Shevchenko
2023-06-13 19:10 ` kernel test robot
2023-06-14 5:27 ` kernel test robot
2023-06-13 15:26 ` [PATCH v2 0/8] rtc: isl12022: battery backup voltage and clock support Andy Shevchenko
2023-06-13 19:06 ` Krzysztof Kozlowski
2023-06-15 11:03 ` Rasmus Villemoes
2023-06-15 10:58 ` [PATCH v3 " Rasmus Villemoes
2023-06-15 10:58 ` [PATCH v3 1/8] rtc: isl12022: remove wrong warning for low battery level Rasmus Villemoes
2023-06-15 10:58 ` [PATCH v3 2/8] dt-bindings: rtc: Move isil,isl12022 from trivial-rtc.yaml into own schema file Rasmus Villemoes
2023-06-15 10:58 ` [PATCH v3 3/8] dt-bindings: rtc: isl12022: add bindings for battery alarm trip levels Rasmus Villemoes
2023-06-17 8:12 ` Krzysztof Kozlowski
2023-06-15 10:58 ` [PATCH v3 4/8] rtc: isl12022: add support for trip level DT binding Rasmus Villemoes
2023-06-15 11:11 ` Andy Shevchenko
2023-06-19 7:27 ` Rasmus Villemoes
2023-06-15 10:58 ` Rasmus Villemoes [this message]
2023-06-15 10:58 ` [PATCH v3 6/8] rtc: isl12022: trigger battery level detection during probe Rasmus Villemoes
2023-06-15 10:58 ` [PATCH v3 7/8] dt-bindings: rtc: isl12022: add #clock-cells property Rasmus Villemoes
2023-06-17 8:13 ` Krzysztof Kozlowski
2023-06-15 10:58 ` [PATCH v3 8/8] rtc: isl12022: implement support for the #clock-cells DT property Rasmus Villemoes
2023-07-28 14:31 ` [PATCH v3 0/8] rtc: isl12022: battery backup voltage and clock support Rasmus Villemoes
2023-08-03 6:45 ` Rasmus Villemoes
2023-08-09 12:28 ` Rasmus Villemoes
2023-08-15 23:28 ` Alexandre Belloni
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