From: Andrey Smirnov <andrew.smirnov@gmail.com>
To: linux-pm@vger.kernel.org
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>,
Chris Healy <cphealy@gmail.com>,
Lucas Stach <l.stach@pengutronix.de>,
Zhang Rui <rui.zhang@intel.com>,
Eduardo Valentin <edubezval@gmail.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Angus Ainslie <angus@akkea.ca>,
linux-imx@nxp.com, linux-kernel@vger.kernel.org
Subject: [PATCH v3 11/13] thermal: qoriq: Do not report invalid temperature reading
Date: Sun, 31 Mar 2019 21:14:16 -0700 [thread overview]
Message-ID: <20190401041418.5999-12-andrew.smirnov@gmail.com> (raw)
In-Reply-To: <20190401041418.5999-1-andrew.smirnov@gmail.com>
Before returning measured temperature data to upper layer we need to
make sure that the reading was marked as "valid" to avoid reporting
bogus data.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Angus Ainslie (Purism) <angus@akkea.ca>
Cc: linux-imx@nxp.com
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
drivers/thermal/qoriq_thermal.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
index 7ff93dfcd68b..9d227654f879 100644
--- a/drivers/thermal/qoriq_thermal.c
+++ b/drivers/thermal/qoriq_thermal.c
@@ -37,6 +37,7 @@
#define REGS_TRITSR(n) (0x100 + 16 * (n)) /* Immediate Temperature
* Site Register
*/
+#define TRITSR_V BIT(31)
#define REGS_TTRnCR(n) (0xf10 + 4 * (n)) /* Temperature Range n
* Control Register
*/
@@ -62,10 +63,18 @@ static int tmu_get_temp(void *p, int *temp)
struct qoriq_sensor *qsensor = p;
struct qoriq_tmu_data *qdata = qoriq_sensor_to_data(qsensor);
u32 val;
+ int ret;
- regmap_read(qdata->regmap, REGS_TRITSR(qsensor->id), &val);
- *temp = (val & 0xff) * 1000;
+ ret = regmap_read_poll_timeout(qdata->regmap,
+ REGS_TRITSR(qsensor->id),
+ val,
+ val & TRITSR_V,
+ USEC_PER_MSEC,
+ 10 * USEC_PER_MSEC);
+ if (ret)
+ return ret;
+ *temp = (val & 0xff) * 1000;
return 0;
}
--
2.20.1
next prev parent reply other threads:[~2019-04-01 4:14 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-01 4:14 [PATCH v3 00/13] QorIQ TMU multi-sensor and HWMON support Andrey Smirnov
2019-04-01 4:14 ` [PATCH v3 01/13] thermal: qoriq: Remove unnecessary DT node is NULL check Andrey Smirnov
2019-04-04 3:21 ` Daniel Lezcano
2019-04-05 17:51 ` Andrey Smirnov
2019-04-11 16:52 ` Daniel Lezcano
2019-04-01 4:14 ` [PATCH v3 02/13] thermal: qoriq: Add local struct device pointer Andrey Smirnov
2019-04-04 3:11 ` Daniel Lezcano
2019-04-01 4:14 ` [PATCH v3 03/13] thermal: qoriq: Don't store struct thermal_zone_device reference Andrey Smirnov
2019-04-04 3:23 ` Daniel Lezcano
2019-04-01 4:14 ` [PATCH v3 04/13] thermal: qoriq: Add local struct qoriq_sensor pointer Andrey Smirnov
2019-04-04 3:28 ` Daniel Lezcano
2019-04-05 17:57 ` Andrey Smirnov
2019-04-01 4:14 ` [PATCH v3 05/13] thermal: qoriq: Embed per-sensor data into struct qoriq_tmu_data Andrey Smirnov
2019-04-04 7:57 ` Daniel Lezcano
2019-04-04 8:06 ` [PATCH RFC 1/2] thermal/drivers/of: Add a get_temp_id callback function Daniel Lezcano
2019-04-04 8:06 ` [PATCH RFC 2/2] thermal/drivers/qoriq: Use the get_temp_id() Daniel Lezcano
2019-04-13 8:18 ` [PATCH RFC 1/2] thermal/drivers/of: Add a get_temp_id callback function Andrey Smirnov
2019-04-13 8:28 ` Daniel Lezcano
2019-04-05 18:00 ` [PATCH v3 05/13] thermal: qoriq: Embed per-sensor data into struct qoriq_tmu_data Andrey Smirnov
2019-04-11 16:54 ` Daniel Lezcano
2019-04-01 4:14 ` [PATCH v3 06/13] thermal: qoriq: Pass data to qoriq_tmu_register_tmu_zone() directly Andrey Smirnov
2019-04-04 8:09 ` Daniel Lezcano
2019-04-01 4:14 ` [PATCH v3 07/13] thermal: qoriq: Pass data to qoriq_tmu_calibration() directly Andrey Smirnov
2019-04-04 8:11 ` Daniel Lezcano
2019-04-05 18:04 ` Andrey Smirnov
2019-04-01 4:14 ` [PATCH v3 08/13] thermal: qoriq: Convert driver to use devm_ioremap() Andrey Smirnov
2019-04-04 8:23 ` Daniel Lezcano
2019-04-05 18:14 ` Andrey Smirnov
2019-04-01 4:14 ` [PATCH v3 09/13] thermal: qoriq: Convert driver to use regmap API Andrey Smirnov
2019-04-04 8:47 ` Daniel Lezcano
2019-04-05 18:24 ` Andrey Smirnov
2019-04-11 13:00 ` Daniel Lezcano
2019-04-01 4:14 ` [PATCH v3 10/13] thermal: qoriq: Enable all sensors before registering them Andrey Smirnov
2019-04-04 9:08 ` Daniel Lezcano
2019-04-01 4:14 ` Andrey Smirnov [this message]
2019-04-04 9:05 ` [PATCH v3 11/13] thermal: qoriq: Do not report invalid temperature reading Daniel Lezcano
2019-04-05 18:30 ` Andrey Smirnov
2019-04-01 4:14 ` [PATCH v3 12/13] thermal_hwmon: Add devres wrapper for thermal_add_hwmon_sysfs() Andrey Smirnov
2019-04-04 9:10 ` Daniel Lezcano
2019-04-01 4:14 ` [PATCH v3 13/13] thermal: qoriq: Add hwmon support Andrey Smirnov
2019-04-04 9:11 ` Daniel Lezcano
2019-04-05 18:38 ` Andrey Smirnov
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