/* * Force feedback support for GreenAsia (Product ID 0x12) based devices * * The devices are distributed under various names and the same USB device ID * can be used in many game controllers. * * * 0e8f:0012 "GreenAsia Inc. USB Joystick " * - tested with MANTA Warior MM816 and SpeedLink Strike2 SL-6635. * * Copyright (c) 2008 Lukasz Lubojanski */ /* * 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 #include #include #include #include "hid-ids.h" #ifdef CONFIG_GREENASIA_FF struct gaff_device { struct hid_report *report; }; static int hid_gaff_play(struct input_dev *dev, void *data, struct ff_effect *effect) { struct hid_device *hid = input_get_drvdata(dev); struct gaff_device *gaff = data; int left, right; left = effect->u.rumble.strong_magnitude; right = effect->u.rumble.weak_magnitude; dbg_hid("called with 0x%04x 0x%04x", left, right); left = left * 0xfe / 0xffff; right = right * 0xfe / 0xffff; gaff->report->field[0]->value[0] = 0x51; gaff->report->field[0]->value[1] = 0x0; gaff->report->field[0]->value[2] = right; gaff->report->field[0]->value[3] = 0; gaff->report->field[0]->value[4] = left; gaff->report->field[0]->value[5] = 0; dbg_hid("running with 0x%02x 0x%02x", left, right); hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); gaff->report->field[0]->value[0] = 0xfa; gaff->report->field[0]->value[1] = 0xfe; gaff->report->field[0]->value[2] = 0x0; gaff->report->field[0]->value[4] = 0x0; hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); return 0; } static int gaff_init(struct hid_device *hid) { struct gaff_device *gaff; 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 list_head *report_ptr = report_list; struct input_dev *dev = hidinput->input; int error; if (list_empty(report_list)) { hid_err(hid, "no output reports found\n"); return -ENODEV; } report_ptr = report_ptr->next; report = list_entry(report_ptr, struct hid_report, list); if (report->maxfield < 1) { hid_err(hid, "no fields in the report\n"); return -ENODEV; } if (report->field[0]->report_count < 6) { hid_err(hid, "not enough values in the field\n"); return -ENODEV; } gaff = kzalloc(sizeof(struct gaff_device), GFP_KERNEL); if (!gaff) return -ENOMEM; set_bit(FF_RUMBLE, dev->ffbit); error = input_ff_create_memless(dev, gaff, hid_gaff_play); if (error) { kfree(gaff); return error; } gaff->report = report; gaff->report->field[0]->value[0] = 0x51; gaff->report->field[0]->value[1] = 0x00; gaff->report->field[0]->value[2] = 0x00; gaff->report->field[0]->value[3] = 0x00; hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); gaff->report->field[0]->value[0] = 0xfa; gaff->report->field[0]->value[1] = 0xfe; hid_hw_request(hid, gaff->report, HID_REQ_SET_REPORT); hid_info(hid, "Force Feedback for GreenAsia 0x12 devices by Lukasz Lubojanski \n"); return 0; } #else static inline int gaff_init(struct hid_device *hdev) { return 0; } #endif static int ga_probe(struct hid_device *hdev, const struct hid_device_id *id) { int ret; dev_dbg(&hdev->dev, "Greenasia HID hardware probe..."); ret = hid_parse(hdev); if (ret) { hid_err(hdev, "parse failed\n"); goto err; } ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT & ~HID_CONNECT_FF); if (ret) { hid_err(hdev, "hw start failed\n"); goto err; } gaff_init(hdev); return 0; err: return ret; } static const struct hid_device_id ga_devices[] = { { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012), }, { } }; MODULE_DEVICE_TABLE(hid, ga_devices); static struct hid_driver ga_driver = { .name = "greenasia", .id_table = ga_devices, .probe = ga_probe, }; module_hid_driver(ga_driver); MODULE_LICENSE("GPL"); ed-off-by: Takashi Iwai <tiwai@suse.de> 2008-08-25ALSA: Allocate larger pages in sgbufTakashi Iwai1-16/+46 Most hardwares have limited buffer-descriptor table length. This also restricts the max buffer size of the sound driver. For example, snd-hda-intel has 1MB buffer size limit, and this is because it can have at most 256 BDL entries. For supporting larger buffers, we need to allocate larger pages even for sg-buffers. This patch changes the sgbuf allocation code to try to allocate larger pages first. At each head of the allocated pages, the number of allocated pages is stored in the lowest bits of the corresponding entry of the table addr field. This change isn't visible as long as the driver uses snd_sgbuf_get_addr() helper. Also, the patch adds a new function, snd_pcm_sgbuf_get_chunk_size(). This returns the size of the chunk on continuous pages starting at the given position offset. If the chunk reaches to a non-continuous page, it returns the size to the boundary. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@perex.cz> 2006-12-20[ALSA] use the ALIGN macroClemens Ladisch1-1/+1 Use the ALIGN macro instead of manual calculations. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz> 2006-08-03[ALSA] Conversions from kmalloc+memset to k(z|c)allocPanagiotis Issaris1-6/+3 sound: Conversions from kmalloc+memset to k(c|z)alloc. Signed-off-by: Panagiotis Issaris <takis@issaris.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz> 2006-06-30Remove obsolete #include <linux/config.h>Jörn Engel1-1/+0 Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de> 2005-04-16Linux-2.6.12-rc2Linus Torvalds