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linux-brain/sound/usb/usx2y/usX2Yhwdep.c
Nathan Chancellor dd77f77004 ALSA: usx2y: Adjust indentation in snd_usX2Y_hwdep_dsp_status 
[ Upstream commit df4654bd6e42125d9b85ce3a26eaca2935290b98 ]

Clang warns:

../sound/usb/usx2y/usX2Yhwdep.c:122:3: warning: misleading indentation;
statement is not part of the previous 'if' [-Wmisleading-indentation]
        info->version = USX2Y_DRIVER_VERSION;
        ^
../sound/usb/usx2y/usX2Yhwdep.c:120:2: note: previous statement is here
        if (us428->chip_status & USX2Y_STAT_CHIP_INIT)
        ^
1 warning generated.

This warning occurs because there is a space before the tab on this
line. Remove it so that the indentation is consistent with the Linux
kernel coding style and clang no longer warns.

This was introduced before the beginning of git history so no fixes tag.

Link: https://github.com/ClangBuiltLinux/linux/issues/831
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20191218034257.54535-1-natechancellor@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-24 08:36:37 +01:00

251 lines
6.6 KiB
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Driver for Tascam US-X2Y USB soundcards
*
* FPGA Loader + ALSA Startup
*
* Copyright (c) 2003 by Karsten Wiese <annabellesgarden@yahoo.de>
*/
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <sound/core.h>
#include <sound/memalloc.h>
#include <sound/pcm.h>
#include <sound/hwdep.h>
#include "usx2y.h"
#include "usbusx2y.h"
#include "usX2Yhwdep.h"
static vm_fault_t snd_us428ctls_vm_fault(struct vm_fault *vmf)
{
unsigned long offset;
struct page * page;
void *vaddr;
snd_printdd("ENTER, start %lXh, pgoff %ld\n",
vmf->vma->vm_start,
vmf->pgoff);
offset = vmf->pgoff << PAGE_SHIFT;
vaddr = (char *)((struct usX2Ydev *)vmf->vma->vm_private_data)->us428ctls_sharedmem + offset;
page = virt_to_page(vaddr);
get_page(page);
vmf->page = page;
snd_printdd("vaddr=%p made us428ctls_vm_fault() page %p\n",
vaddr, page);
return 0;
}
static const struct vm_operations_struct us428ctls_vm_ops = {
.fault = snd_us428ctls_vm_fault,
};
static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
{
unsigned long size = (unsigned long)(area->vm_end - area->vm_start);
struct usX2Ydev *us428 = hw->private_data;
// FIXME this hwdep interface is used twice: fpga download and mmap for controlling Lights etc. Maybe better using 2 hwdep devs?
// so as long as the device isn't fully initialised yet we return -EBUSY here.
if (!(us428->chip_status & USX2Y_STAT_CHIP_INIT))
return -EBUSY;
/* if userspace tries to mmap beyond end of our buffer, fail */
if (size > PAGE_ALIGN(sizeof(struct us428ctls_sharedmem))) {
snd_printd( "%lu > %lu\n", size, (unsigned long)sizeof(struct us428ctls_sharedmem));
return -EINVAL;
}
if (!us428->us428ctls_sharedmem) {
init_waitqueue_head(&us428->us428ctls_wait_queue_head);
us428->us428ctls_sharedmem = alloc_pages_exact(sizeof(struct us428ctls_sharedmem), GFP_KERNEL);
if (!us428->us428ctls_sharedmem)
return -ENOMEM;
memset(us428->us428ctls_sharedmem, -1, sizeof(struct us428ctls_sharedmem));
us428->us428ctls_sharedmem->CtlSnapShotLast = -2;
}
area->vm_ops = &us428ctls_vm_ops;
area->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP;
area->vm_private_data = hw->private_data;
return 0;
}
static __poll_t snd_us428ctls_poll(struct snd_hwdep *hw, struct file *file, poll_table *wait)
{
__poll_t mask = 0;
struct usX2Ydev *us428 = hw->private_data;
struct us428ctls_sharedmem *shm = us428->us428ctls_sharedmem;
if (us428->chip_status & USX2Y_STAT_CHIP_HUP)
return EPOLLHUP;
poll_wait(file, &us428->us428ctls_wait_queue_head, wait);
if (shm != NULL && shm->CtlSnapShotLast != shm->CtlSnapShotRed)
mask |= EPOLLIN;
return mask;
}
static int snd_usX2Y_hwdep_dsp_status(struct snd_hwdep *hw,
struct snd_hwdep_dsp_status *info)
{
static char *type_ids[USX2Y_TYPE_NUMS] = {
[USX2Y_TYPE_122] = "us122",
[USX2Y_TYPE_224] = "us224",
[USX2Y_TYPE_428] = "us428",
};
struct usX2Ydev *us428 = hw->private_data;
int id = -1;
switch (le16_to_cpu(us428->dev->descriptor.idProduct)) {
case USB_ID_US122:
id = USX2Y_TYPE_122;
break;
case USB_ID_US224:
id = USX2Y_TYPE_224;
break;
case USB_ID_US428:
id = USX2Y_TYPE_428;
break;
}
if (0 > id)
return -ENODEV;
strcpy(info->id, type_ids[id]);
info->num_dsps = 2; // 0: Prepad Data, 1: FPGA Code
if (us428->chip_status & USX2Y_STAT_CHIP_INIT)
info->chip_ready = 1;
info->version = USX2Y_DRIVER_VERSION;
return 0;
}
static int usX2Y_create_usbmidi(struct snd_card *card)
{
static struct snd_usb_midi_endpoint_info quirk_data_1 = {
.out_ep = 0x06,
.in_ep = 0x06,
.out_cables = 0x001,
.in_cables = 0x001
};
static struct snd_usb_audio_quirk quirk_1 = {
.vendor_name = "TASCAM",
.product_name = NAME_ALLCAPS,
.ifnum = 0,
.type = QUIRK_MIDI_FIXED_ENDPOINT,
.data = &quirk_data_1
};
static struct snd_usb_midi_endpoint_info quirk_data_2 = {
.out_ep = 0x06,
.in_ep = 0x06,
.out_cables = 0x003,
.in_cables = 0x003
};
static struct snd_usb_audio_quirk quirk_2 = {
.vendor_name = "TASCAM",
.product_name = "US428",
.ifnum = 0,
.type = QUIRK_MIDI_FIXED_ENDPOINT,
.data = &quirk_data_2
};
struct usb_device *dev = usX2Y(card)->dev;
struct usb_interface *iface = usb_ifnum_to_if(dev, 0);
struct snd_usb_audio_quirk *quirk =
le16_to_cpu(dev->descriptor.idProduct) == USB_ID_US428 ?
&quirk_2 : &quirk_1;
snd_printdd("usX2Y_create_usbmidi \n");
return snd_usbmidi_create(card, iface, &usX2Y(card)->midi_list, quirk);
}
static int usX2Y_create_alsa_devices(struct snd_card *card)
{
int err;
do {
if ((err = usX2Y_create_usbmidi(card)) < 0) {
snd_printk(KERN_ERR "usX2Y_create_alsa_devices: usX2Y_create_usbmidi error %i \n", err);
break;
}
if ((err = usX2Y_audio_create(card)) < 0)
break;
if ((err = usX2Y_hwdep_pcm_new(card)) < 0)
break;
if ((err = snd_card_register(card)) < 0)
break;
} while (0);
return err;
}
static int snd_usX2Y_hwdep_dsp_load(struct snd_hwdep *hw,
struct snd_hwdep_dsp_image *dsp)
{
struct usX2Ydev *priv = hw->private_data;
struct usb_device* dev = priv->dev;
int lret, err;
char *buf;
snd_printdd( "dsp_load %s\n", dsp->name);
buf = memdup_user(dsp->image, dsp->length);
if (IS_ERR(buf))
return PTR_ERR(buf);
err = usb_set_interface(dev, 0, 1);
if (err)
snd_printk(KERN_ERR "usb_set_interface error \n");
else
err = usb_bulk_msg(dev, usb_sndbulkpipe(dev, 2), buf, dsp->length, &lret, 6000);
kfree(buf);
if (err)
return err;
if (dsp->index == 1) {
msleep(250); // give the device some time
err = usX2Y_AsyncSeq04_init(priv);
if (err) {
snd_printk(KERN_ERR "usX2Y_AsyncSeq04_init error \n");
return err;
}
err = usX2Y_In04_init(priv);
if (err) {
snd_printk(KERN_ERR "usX2Y_In04_init error \n");
return err;
}
err = usX2Y_create_alsa_devices(hw->card);
if (err) {
snd_printk(KERN_ERR "usX2Y_create_alsa_devices error %i \n", err);
snd_card_free(hw->card);
return err;
}
priv->chip_status |= USX2Y_STAT_CHIP_INIT;
snd_printdd("%s: alsa all started\n", hw->name);
}
return err;
}
int usX2Y_hwdep_new(struct snd_card *card, struct usb_device* device)
{
int err;
struct snd_hwdep *hw;
if ((err = snd_hwdep_new(card, SND_USX2Y_LOADER_ID, 0, &hw)) < 0)
return err;
hw->iface = SNDRV_HWDEP_IFACE_USX2Y;
hw->private_data = usX2Y(card);
hw->ops.dsp_status = snd_usX2Y_hwdep_dsp_status;
hw->ops.dsp_load = snd_usX2Y_hwdep_dsp_load;
hw->ops.mmap = snd_us428ctls_mmap;
hw->ops.poll = snd_us428ctls_poll;
hw->exclusive = 1;
sprintf(hw->name, "/dev/bus/usb/%03d/%03d", device->bus->busnum, device->devnum);
return 0;
}
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