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mfd: cros_ec: Instantiate properly CrOS ISH MCU device

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Integrated Sensor Hub (ISH) is also a MCU running EC
having feature bit EC_FEATURE_ISH. Instantiate it as
a special CrOS EC device with device name 'cros_ish'.

Signed-off-by: Rushikesh S Kadam <rushikesh.s.kadam@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Rushikesh S Kadam
2019-03-01 13:50:54 +05:30
committed by Lee Jones
parent 730080a758
commit d4cee9509e
3 changed files with 16 additions and 0 deletions
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13
drivers/mfd/cros_ec_dev.c
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@@ -418,6 +418,19 @@ static int ec_device_probe(struct platform_device *pdev)
device_initialize(&ec->class_dev);
cdev_init(&ec->cdev, &fops);
/*
* Check whether this is actually an Integrated Sensor Hub (ISH)
* rather than an EC.
*/
if (cros_ec_check_features(ec, EC_FEATURE_ISH)) {
dev_info(dev, "CrOS ISH MCU detected.\n");
/*
* Help userspace differentiating ECs from ISH MCU,
* regardless of the probing order.
*/
ec_platform->ec_name = CROS_EC_DEV_ISH_NAME;
}
/*
* Add the class device
* Link to the character device for creating the /dev entry