diff options
Diffstat (limited to '0022-HID-AMD_SFH-Add-a-DMI-quirk-entry-for-Chromebooks.patch')
| -rw-r--r-- | 0022-HID-AMD_SFH-Add-a-DMI-quirk-entry-for-Chromebooks.patch | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/0022-HID-AMD_SFH-Add-a-DMI-quirk-entry-for-Chromebooks.patch b/0022-HID-AMD_SFH-Add-a-DMI-quirk-entry-for-Chromebooks.patch new file mode 100644 index 000000000000..0b803b318e36 --- /dev/null +++ b/0022-HID-AMD_SFH-Add-a-DMI-quirk-entry-for-Chromebooks.patch @@ -0,0 +1,60 @@ +From 2803225ac89bc761ade8673105db8a8d84335054 Mon Sep 17 00:00:00 2001 +From: Akihiko Odaki <akihiko.odaki@gmail.com> +Date: Tue, 16 Aug 2022 19:21:20 +0900 +Subject: [PATCH 22/73] HID: AMD_SFH: Add a DMI quirk entry for Chromebooks + +commit adada3f4930ac084740ea340bd8e94028eba4f22 upstream. + +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> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + drivers/hid/amd-sfh-hid/amd_sfh_pcie.c | 18 ++++++++++++++++++ + 1 file changed, 18 insertions(+) + +diff --git a/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c +index 1441787a154a..9b97dc0695e3 100644 +--- a/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c ++++ b/drivers/hid/amd-sfh-hid/amd_sfh_pcie.c +@@ -285,11 +285,29 @@ static int amd_sfh_irq_init(struct amd_mp2_dev *privdata) + return 0; + } + ++static const struct dmi_system_id dmi_nodevs[] = { ++ { ++ /* ++ * 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. ++ */ ++ .matches = { ++ DMI_MATCH(DMI_SYS_VENDOR, "Google"), ++ }, ++ }, ++ { } ++}; ++ + static int amd_mp2_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) + { + struct amd_mp2_dev *privdata; + int rc; + ++ if (dmi_first_match(dmi_nodevs)) ++ return -ENODEV; ++ + privdata = devm_kzalloc(&pdev->dev, sizeof(*privdata), GFP_KERNEL); + if (!privdata) + return -ENOMEM; +-- +2.37.3 + |