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HID: AMD_SFH: Add a DMI quirk entry for Chromebooks
Google Chromebooks use Chrome OS Embedded Controller Sensor Hub instead of Sensor Hub Fusion and leaves MP2 uninitialized, which disables all functionalities, even including the registers necessary for feature detections. The behavior was observed with Lenovo ThinkPad C13 Yoga. Signed-off-by: Akihiko Odaki <akihiko.odaki@gmail.com> Suggested-by: Mario Limonciello <mario.limonciello@amd.com> Acked-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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1 changed files with 18 additions and 0 deletions
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@ -288,11 +288,29 @@ int amd_sfh_irq_init(struct amd_mp2_dev *privdata)
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return 0;
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return 0;
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}
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}
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static const struct dmi_system_id dmi_nodevs[] = {
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{
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/*
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* Google Chromebooks use Chrome OS Embedded Controller Sensor
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* Hub instead of Sensor Hub Fusion and leaves MP2
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* uninitialized, which disables all functionalities, even
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* including the registers necessary for feature detections.
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*/
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "Google"),
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},
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},
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{ }
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};
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static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
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{
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{
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struct amd_mp2_dev *privdata;
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struct amd_mp2_dev *privdata;
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int rc;
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int rc;
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if (dmi_first_match(dmi_nodevs))
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return -ENODEV;
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privdata = devm_kzalloc(&pdev->dev, sizeof(*privdata), GFP_KERNEL);
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privdata = devm_kzalloc(&pdev->dev, sizeof(*privdata), GFP_KERNEL);
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if (!privdata)
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if (!privdata)
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return -ENOMEM;
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return -ENOMEM;
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