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platform/chrome: cros_ec_sensorhub: Add the number of sensors in sensorhub 

To better manage resources, store the number of sensors reported by
the EC.

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
This commit is contained in:
Gwendal Grignou 2020-03-27 15:34:32 -07:00 committed by Enric Balletbo i Serra
parent b2057c6401
commit cee416a347
2 changed files with 5 additions and 1 deletions
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4
drivers/platform/chrome/cros_ec_sensorhub.c
View File

@ -65,6 +65,7 @@ static int cros_ec_sensorhub_register(struct device *dev,
return sensor_num;
}
sensorhub->sensor_num = sensor_num;
if (sensor_num == 0) {
dev_err(dev, "Zero sensors reported.\n");
return -EINVAL;
@ -172,7 +173,8 @@ static int cros_ec_sensorhub_probe(struct platform_device *pdev)
* If the device has sensors but does not claim to
* be a sensor hub, we are in legacy mode.
*/
for (i = 0; i < 2; i++) {
data->sensor_num = 2;
for (i = 0; i < data->sensor_num; i++) {
ret = cros_ec_sensorhub_allocate_sensor(dev,
"cros-ec-accel-legacy", i);
if (ret)

2
include/linux/platform_data/cros_ec_sensorhub.h
View File

@ -22,9 +22,11 @@ struct cros_ec_sensor_platform {
* struct cros_ec_sensorhub - Sensor Hub device data.
*
* @ec: Embedded Controller where the hub is located.
* @sensor_num: Number of MEMS sensors present in the EC.
*/
struct cros_ec_sensorhub {
struct cros_ec_dev *ec;
int sensor_num;
};
#endif /* __LINUX_PLATFORM_DATA_CROS_EC_SENSORHUB_H */