/* * Functions for the OPL4 proc file * Copyright (c) 2003 by Clemens Ladisch * * 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 "opl4_local.h" #include #include #include static int snd_opl4_mem_proc_open(struct snd_info_entry *entry, unsigned short mode, void **file_private_data) { struct snd_opl4 *opl4 = entry->private_data; mutex_lock(&opl4->access_mutex); if (opl4->memory_access) { mutex_unlock(&opl4->access_mutex); return -EBUSY; } opl4->memory_access++; mutex_unlock(&opl4->access_mutex); return 0; } static int snd_opl4_mem_proc_release(struct snd_info_entry *entry, unsigned short mode, void *file_private_data) { struct snd_opl4 *opl4 = entry->private_data; mutex_lock(&opl4->access_mutex); opl4->memory_access--; mutex_unlock(&opl4->access_mutex); return 0; } static ssize_t snd_opl4_mem_proc_read(struct snd_info_entry *entry, void *file_private_data, struct file *file, char __user *_buf, size_t count, loff_t pos) { struct snd_opl4 *opl4 = entry->private_data; char* buf; buf = vmalloc(count); if (!buf) return -ENOMEM; snd_opl4_read_memory(opl4, buf, pos, count); if (copy_to_user(_buf, buf, count)) { vfree(buf); return -EFAULT; } vfree(buf); return count; } static ssize_t snd_opl4_mem_proc_write(struct snd_info_entry *entry, void *file_private_data, struct file *file, const char __user *_buf, size_t count, loff_t pos) { struct snd_opl4 *opl4 = entry->private_data; char *buf; buf = vmalloc(count); if (!buf) return -ENOMEM; if (copy_from_user(buf, _buf, count)) { vfree(buf); return -EFAULT; } snd_opl4_write_memory(opl4, buf, pos, count); vfree(buf); return count; } static struct snd_info_entry_ops snd_opl4_mem_proc_ops = { .open = snd_opl4_mem_proc_open, .release = snd_opl4_mem_proc_release, .read = snd_opl4_mem_proc_read, .write = snd_opl4_mem_proc_write, }; int snd_opl4_create_proc(struct snd_opl4 *opl4) { struct snd_info_entry *entry; entry = snd_info_create_card_entry(opl4->card, "opl4-mem", opl4->card->proc_root); if (entry) { if (opl4->hardware < OPL3_HW_OPL4_ML) { /* OPL4 can access 4 MB external ROM/SRAM */ entry->mode |= S_IWUSR; entry->size = 4 * 1024 * 1024; } else { /* OPL4-ML has 1 MB internal ROM */ entry->size = 1 * 1024 * 1024; } entry->content = SNDRV_INFO_CONTENT_DATA; entry->c.ops = &snd_opl4_mem_proc_ops; entry->module = THIS_MODULE; entry->private_data = opl4; if (snd_info_register(entry) < 0) { snd_info_free_entry(entry); entry = NULL; } } opl4->proc_entry = entry; return 0; } void snd_opl4_free_proc(struct snd_opl4 *opl4) { snd_info_free_entry(opl4->proc_entry); } a694d649aa2e167c3f97f62bdad07e3f84'>hcp.c
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authorAleksander Morgado <aleksander@aleksander.es>2017-01-18 21:31:31 +0100
committerJohan Hovold <johan@kernel.org>2017-01-19 09:08:37 +0100
commit24d615a694d649aa2e167c3f97f62bdad07e3f84 (patch)
tree2fe33c115bdec6bf4b01e27afd90bb16fa668e22 /net/nfc/hci/hcp.c
parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
USB: serial: qcserial: add Dell DW5570 QDL
The Dell DW5570 is a re-branded Sierra Wireless MC8805 which will by default boot with vid 0x413c and pid 0x81a3. When triggered QDL download mode, the device switches to pid 0x81a6 and provides the standard TTY used for firmware upgrade. Cc: <stable@vger.kernel.org> Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'net/nfc/hci/hcp.c')