thermal: of: improve of-thermal sensor registration API

Different drivers request API extensions in of-thermal. For this reason,
additional callbacks are required to fit the new drivers needs.

The current API implementation expects the registering sensor driver
to provide a get_temp and get_trend callbacks as function parameters.
As the amount of callbacks is growing, this patch changes the existing
implementation to use a .ops field to hold all the of thermal callbacks
to sensor drivers.

This patch also changes the existing of-thermal users to fit the new
API design. No functional change is introduced in this patch.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jean Delvare <jdelvare@suse.de>
Cc: linux-kernel@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: lm-sensors@lm-sensors.org
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
Reviewed-by: Mikko Perttunen <mikko.perttunen@kapsi.fi>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c
index 70f7e9ef4355..9197fc05c5cc 100644
--- a/drivers/thermal/tegra_soctherm.c
+++ b/drivers/thermal/tegra_soctherm.c
@@ -317,6 +317,10 @@ static int tegra_thermctl_get_temp(void *data, long *out_temp)
 	return 0;
 }
 
+static const struct thermal_zone_of_device_ops tegra_of_thermal_ops = {
+	.get_temp = tegra_thermctl_get_temp,
+};
+
 static const struct of_device_id tegra_soctherm_of_match[] = {
 	{ .compatible = "nvidia,tegra124-soctherm" },
 	{ },
@@ -416,8 +420,7 @@ static int tegra_soctherm_probe(struct platform_device *pdev)
 		zone->shift = t124_thermctl_temp_zones[i].shift;
 
 		tz = thermal_zone_of_sensor_register(&pdev->dev, i, zone,
-						     tegra_thermctl_get_temp,
-						     NULL);
+						     &tegra_of_thermal_ops);
 		if (IS_ERR(tz)) {
 			err = PTR_ERR(tz);
 			dev_err(&pdev->dev, "failed to register sensor: %d\n",