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author | Jiri Slaby <jirislaby@gmail.com> | 2008-07-04 23:06:45 +0200 |
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committer | Jiri Kosina <jkosina@suse.cz> | 2008-10-14 23:50:56 +0200 |
commit | 606bd0a8616a0e59021cb2997e942513f24f641d (patch) | |
tree | f4884ef8d1beb2c13eaa3af45512c7b43def30ae /drivers/hid/hid-lg2ff.c | |
parent | 6edfa8dc33803a49ad936ead9840e453bee6ca3b (diff) | |
download | kernel_samsung_smdk4412-606bd0a8616a0e59021cb2997e942513f24f641d.zip kernel_samsung_smdk4412-606bd0a8616a0e59021cb2997e942513f24f641d.tar.gz kernel_samsung_smdk4412-606bd0a8616a0e59021cb2997e942513f24f641d.tar.bz2 |
HID: move logitech FF processing
Merge the logitech force feedback processing directly into logitech
driver from the usbhid core.
Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid/hid-lg2ff.c')
-rw-r--r-- | drivers/hid/hid-lg2ff.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/drivers/hid/hid-lg2ff.c b/drivers/hid/hid-lg2ff.c new file mode 100644 index 0000000..b2e9a67 --- /dev/null +++ b/drivers/hid/hid-lg2ff.c @@ -0,0 +1,116 @@ +/* + * Force feedback support for Logitech Rumblepad 2 + * + * Copyright (c) 2008 Anssi Hannula <anssi.hannula@gmail.com> + */ + +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + + +#include <linux/input.h> +#include <linux/usb.h> +#include <linux/hid.h> + +#include "usbhid/usbhid.h" +#include "hid-lg.h" + +struct lg2ff_device { + struct hid_report *report; +}; + +static int play_effect(struct input_dev *dev, void *data, + struct ff_effect *effect) +{ + struct hid_device *hid = input_get_drvdata(dev); + struct lg2ff_device *lg2ff = data; + int weak, strong; + + strong = effect->u.rumble.strong_magnitude; + weak = effect->u.rumble.weak_magnitude; + + if (weak || strong) { + weak = weak * 0xff / 0xffff; + strong = strong * 0xff / 0xffff; + + lg2ff->report->field[0]->value[0] = 0x51; + lg2ff->report->field[0]->value[2] = weak; + lg2ff->report->field[0]->value[4] = strong; + } else { + lg2ff->report->field[0]->value[0] = 0xf3; + lg2ff->report->field[0]->value[2] = 0x00; + lg2ff->report->field[0]->value[4] = 0x00; + } + + usbhid_submit_report(hid, lg2ff->report, USB_DIR_OUT); + return 0; +} + +int lg2ff_init(struct hid_device *hid) +{ + struct lg2ff_device *lg2ff; + struct hid_report *report; + struct hid_input *hidinput = list_entry(hid->inputs.next, + struct hid_input, list); + struct list_head *report_list = + &hid->report_enum[HID_OUTPUT_REPORT].report_list; + struct input_dev *dev = hidinput->input; + int error; + + if (list_empty(report_list)) { + printk(KERN_ERR "hid-lg2ff: no output report found\n"); + return -ENODEV; + } + + report = list_entry(report_list->next, struct hid_report, list); + + if (report->maxfield < 1) { + printk(KERN_ERR "hid-lg2ff: output report is empty\n"); + return -ENODEV; + } + if (report->field[0]->report_count < 7) { + printk(KERN_ERR "hid-lg2ff: not enough values in the field\n"); + return -ENODEV; + } + + lg2ff = kmalloc(sizeof(struct lg2ff_device), GFP_KERNEL); + if (!lg2ff) + return -ENOMEM; + + set_bit(FF_RUMBLE, dev->ffbit); + + error = input_ff_create_memless(dev, lg2ff, play_effect); + if (error) { + kfree(lg2ff); + return error; + } + + lg2ff->report = report; + report->field[0]->value[0] = 0xf3; + report->field[0]->value[1] = 0x00; + report->field[0]->value[2] = 0x00; + report->field[0]->value[3] = 0x00; + report->field[0]->value[4] = 0x00; + report->field[0]->value[5] = 0x00; + report->field[0]->value[6] = 0x00; + + usbhid_submit_report(hid, report, USB_DIR_OUT); + + printk(KERN_INFO "Force feedback for Logitech Rumblepad 2 by " + "Anssi Hannula <anssi.hannula@gmail.com>\n"); + + return 0; +} |