thermal: qoriq: Add hwmon support

Expose thermal readings as a HWMON device, so that it could be
accessed using lm-sensors.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Tested-by: Lucas Stach <l.stach@pengutronix.de>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
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
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20191210164153.10463-13-andrew.smirnov@gmail.com

diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
index 1730dbe..874bc46 100644 (file)
--- a/drivers/thermal/qoriq_thermal.c
+++ b/drivers/thermal/qoriq_thermal.c
@@ -14,6 +14,7 @@
 #include <linux/thermal.h>
 
 #include "thermal_core.h"
+#include "thermal_hwmon.h"
 
 #define SITES_MAX              16
 #define TMR_DISABLE            0x0
@@ -140,6 +141,11 @@ static int qoriq_tmu_register_tmu_zone(struct device *dev,
                        regmap_write(qdata->regmap, REGS_TMR, TMR_DISABLE);
                        return ret;
                }
+
+               if (devm_thermal_add_hwmon_sysfs(tzd))
+                       dev_warn(dev,
+                                "Failed to add hwmon sysfs attributes\n");
+
        }
 
        return 0;