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| author | Николай Кудрявцев <nkudriavtsev@gmail.com> | 2015-07-21 12:31:52 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.com> | 2015-07-29 14:12:26 +0200 |
| commit | 9a1d78a3780e0e37eeff11b377fc5fbb01446a36 (patch) | |
| tree | ebb6789cc6ca4851e1fb387e702bc98d74e8eecb | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jik... (diff) | |
| download | linux-9a1d78a3780e0e37eeff11b377fc5fbb01446a36.tar.xz linux-9a1d78a3780e0e37eeff11b377fc5fbb01446a36.zip | |
HID: chicony: Add support for Acer Aspire Switch 12
Acer Aspire Switch 12 keyboard Chicony's controller reports too big usage
index on the 1st interface. The patch fixes the report. The work based on
solution from drivers/hid/hid-holtek-mouse.c
Bug report: https://bugzilla.kernel.org/show_bug.cgi?id=101721
Signed-off-by: Nicholas Kudriavtsev <nkudriavtsev@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
| -rw-r--r-- | drivers/hid/hid-chicony.c | 26 | ||||
| -rw-r--r-- | drivers/hid/hid-core.c | 1 | ||||
| -rw-r--r-- | drivers/hid/hid-ids.h | 1 |
3 files changed, 28 insertions, 0 deletions
diff --git a/drivers/hid/hid-chicony.c b/drivers/hid/hid-chicony.c index b613d5a79684..bc3cec199fee 100644 --- a/drivers/hid/hid-chicony.c +++ b/drivers/hid/hid-chicony.c @@ -20,6 +20,7 @@ #include <linux/input.h> #include <linux/hid.h> #include <linux/module.h> +#include <linux/usb.h> #include "hid-ids.h" @@ -57,10 +58,34 @@ static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi, return 1; } +static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc, + unsigned int *rsize) +{ + struct usb_interface *intf = to_usb_interface(hdev->dev.parent); + + if (intf->cur_altsetting->desc.bInterfaceNumber == 1) { + /* Change usage maximum and logical maximum from 0x7fff to + * 0x2fff, so they don't exceed HID_MAX_USAGES */ + switch (hdev->product) { + case USB_DEVICE_ID_CHICONY_ACER_SWITCH12: + if (*rsize >= 128 && rdesc[64] == 0xff && rdesc[65] == 0x7f + && rdesc[69] == 0xff && rdesc[70] == 0x7f) { + hid_info(hdev, "Fixing up report descriptor\n"); + rdesc[65] = rdesc[70] = 0x2f; + } + break; + } + + } + return rdesc; +} + + static const struct hid_device_id ch_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) }, { } }; MODULE_DEVICE_TABLE(hid, ch_devices); @@ -68,6 +93,7 @@ MODULE_DEVICE_TABLE(hid, ch_devices); static struct hid_driver ch_driver = { .name = "chicony", .id_table = ch_devices, + .report_fixup = ch_switch12_report_fixup, .input_mapping = ch_input_mapping, }; module_hid_driver(ch_driver); diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 157c62775053..a77d30388b4d 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -1804,6 +1804,7 @@ static const struct hid_device_id hid_have_special_driver[] = { { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) }, { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) }, + { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) }, { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) }, { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) }, diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index b04b0820d816..7c712dff2ca1 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -230,6 +230,7 @@ #define USB_DEVICE_ID_CHICONY_PIXART_USB_OPTICAL_MOUSE 0x1053 #define USB_DEVICE_ID_CHICONY_WIRELESS2 0x1123 #define USB_DEVICE_ID_CHICONY_AK1D 0x1125 +#define USB_DEVICE_ID_CHICONY_ACER_SWITCH12 0x1421 #define USB_VENDOR_ID_CHUNGHWAT 0x2247 #define USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH 0x0001 |