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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
142 lines
3.1 KiB
C
142 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Force feedback support for Zeroplus based devices
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*
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* Copyright (c) 2005, 2006 Anssi Hannula <anssi.hannula@gmail.com>
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*/
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/*
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*/
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#include <linux/hid.h>
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#include <linux/input.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include "hid-ids.h"
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#ifdef CONFIG_ZEROPLUS_FF
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struct zpff_device {
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struct hid_report *report;
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};
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static int zpff_play(struct input_dev *dev, void *data,
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struct ff_effect *effect)
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{
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struct hid_device *hid = input_get_drvdata(dev);
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struct zpff_device *zpff = data;
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int left, right;
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/*
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* The following is specified the other way around in the Zeroplus
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* datasheet but the order below is correct for the XFX Executioner;
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* however it is possible that the XFX Executioner is an exception
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*/
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left = effect->u.rumble.strong_magnitude;
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right = effect->u.rumble.weak_magnitude;
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dbg_hid("called with 0x%04x 0x%04x\n", left, right);
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left = left * 0x7f / 0xffff;
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right = right * 0x7f / 0xffff;
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zpff->report->field[2]->value[0] = left;
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zpff->report->field[3]->value[0] = right;
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dbg_hid("running with 0x%02x 0x%02x\n", left, right);
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hid_hw_request(hid, zpff->report, HID_REQ_SET_REPORT);
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return 0;
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}
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static int zpff_init(struct hid_device *hid)
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{
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struct zpff_device *zpff;
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struct hid_report *report;
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struct hid_input *hidinput;
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struct input_dev *dev;
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int i, error;
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if (list_empty(&hid->inputs)) {
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hid_err(hid, "no inputs found\n");
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return -ENODEV;
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}
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hidinput = list_entry(hid->inputs.next, struct hid_input, list);
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dev = hidinput->input;
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for (i = 0; i < 4; i++) {
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report = hid_validate_values(hid, HID_OUTPUT_REPORT, 0, i, 1);
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if (!report)
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return -ENODEV;
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}
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zpff = kzalloc_obj(struct zpff_device);
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if (!zpff)
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return -ENOMEM;
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set_bit(FF_RUMBLE, dev->ffbit);
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error = input_ff_create_memless(dev, zpff, zpff_play);
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if (error) {
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kfree(zpff);
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return error;
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}
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zpff->report = report;
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zpff->report->field[0]->value[0] = 0x00;
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zpff->report->field[1]->value[0] = 0x02;
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zpff->report->field[2]->value[0] = 0x00;
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zpff->report->field[3]->value[0] = 0x00;
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hid_hw_request(hid, zpff->report, HID_REQ_SET_REPORT);
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hid_info(hid, "force feedback for Zeroplus based devices by Anssi Hannula <anssi.hannula@gmail.com>\n");
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return 0;
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}
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#else
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static inline int zpff_init(struct hid_device *hid)
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{
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return 0;
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}
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#endif
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static int zp_probe(struct hid_device *hdev, const struct hid_device_id *id)
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{
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int ret;
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ret = hid_parse(hdev);
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if (ret) {
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hid_err(hdev, "parse failed\n");
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goto err;
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}
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ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF);
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if (ret) {
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hid_err(hdev, "hw start failed\n");
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goto err;
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}
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zpff_init(hdev);
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return 0;
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err:
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return ret;
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}
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static const struct hid_device_id zp_devices[] = {
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{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
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{ HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
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{ }
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};
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MODULE_DEVICE_TABLE(hid, zp_devices);
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static struct hid_driver zp_driver = {
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.name = "zeroplus",
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.id_table = zp_devices,
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.probe = zp_probe,
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};
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module_hid_driver(zp_driver);
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MODULE_DESCRIPTION("Force feedback support for Zeroplus based devices");
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MODULE_LICENSE("GPL");
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