// SPDX-License-Identifier: GPL-2.0-or-later
|
/*
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* Mirics MSi2500 driver
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* Mirics MSi3101 SDR Dongle driver
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*
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* Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
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*
|
* That driver is somehow based of pwc driver:
|
* (C) 1999-2004 Nemosoft Unv.
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* (C) 2004-2006 Luc Saillard (luc@saillard.org)
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* (C) 2011 Hans de Goede <hdegoede@redhat.com>
|
*/
|
|
#include <linux/module.h>
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#include <linux/slab.h>
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#include <asm/div64.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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#include <linux/usb.h>
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#include <media/videobuf2-v4l2.h>
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#include <media/videobuf2-vmalloc.h>
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#include <linux/spi/spi.h>
|
|
static bool msi2500_emulated_fmt;
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module_param_named(emulated_formats, msi2500_emulated_fmt, bool, 0644);
|
MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");
|
|
/*
|
* iConfiguration 0
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* bInterfaceNumber 0
|
* bAlternateSetting 1
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* bNumEndpoints 1
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* bEndpointAddress 0x81 EP 1 IN
|
* bmAttributes 1
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* Transfer Type Isochronous
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* wMaxPacketSize 0x1400 3x 1024 bytes
|
* bInterval 1
|
*/
|
#define MAX_ISO_BUFS (8)
|
#define ISO_FRAMES_PER_DESC (8)
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#define ISO_MAX_FRAME_SIZE (3 * 1024)
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#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
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#define MAX_ISOC_ERRORS 20
|
|
/*
|
* TODO: These formats should be moved to V4L2 API. Formats are currently
|
* disabled from formats[] table, not visible to userspace.
|
*/
|
/* signed 12-bit */
|
#define MSI2500_PIX_FMT_SDR_S12 v4l2_fourcc('D', 'S', '1', '2')
|
/* Mirics MSi2500 format 384 */
|
#define MSI2500_PIX_FMT_SDR_MSI2500_384 v4l2_fourcc('M', '3', '8', '4')
|
|
static const struct v4l2_frequency_band bands[] = {
|
{
|
.tuner = 0,
|
.type = V4L2_TUNER_ADC,
|
.index = 0,
|
.capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,
|
.rangelow = 1200000,
|
.rangehigh = 15000000,
|
},
|
};
|
|
/* stream formats */
|
struct msi2500_format {
|
u32 pixelformat;
|
u32 buffersize;
|
};
|
|
/* format descriptions for capture and preview */
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static struct msi2500_format formats[] = {
|
{
|
.pixelformat = V4L2_SDR_FMT_CS8,
|
.buffersize = 3 * 1008,
|
#if 0
|
}, {
|
.pixelformat = MSI2500_PIX_FMT_SDR_MSI2500_384,
|
}, {
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.pixelformat = MSI2500_PIX_FMT_SDR_S12,
|
#endif
|
}, {
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.pixelformat = V4L2_SDR_FMT_CS14LE,
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.buffersize = 3 * 1008,
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}, {
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.pixelformat = V4L2_SDR_FMT_CU8,
|
.buffersize = 3 * 1008,
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}, {
|
.pixelformat = V4L2_SDR_FMT_CU16LE,
|
.buffersize = 3 * 1008,
|
},
|
};
|
|
static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);
|
|
/* intermediate buffers with raw data from the USB device */
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struct msi2500_frame_buf {
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/* common v4l buffer stuff -- must be first */
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struct vb2_v4l2_buffer vb;
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struct list_head list;
|
};
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struct msi2500_dev {
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struct device *dev;
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struct video_device vdev;
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struct v4l2_device v4l2_dev;
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struct v4l2_subdev *v4l2_subdev;
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struct spi_master *master;
|
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/* videobuf2 queue and queued buffers list */
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struct vb2_queue vb_queue;
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struct list_head queued_bufs;
|
spinlock_t queued_bufs_lock; /* Protects queued_bufs */
|
|
/* Note if taking both locks v4l2_lock must always be locked first! */
|
struct mutex v4l2_lock; /* Protects everything else */
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struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
|
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/* Pointer to our usb_device, will be NULL after unplug */
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struct usb_device *udev; /* Both mutexes most be hold when setting! */
|
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unsigned int f_adc;
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u32 pixelformat;
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u32 buffersize;
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unsigned int num_formats;
|
|
unsigned int isoc_errors; /* number of contiguous ISOC errors */
|
unsigned int vb_full; /* vb is full and packets dropped */
|
|
struct urb *urbs[MAX_ISO_BUFS];
|
|
/* Controls */
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struct v4l2_ctrl_handler hdl;
|
|
u32 next_sample; /* for track lost packets */
|
u32 sample; /* for sample rate calc */
|
unsigned long jiffies_next;
|
};
|
|
/* Private functions */
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static struct msi2500_frame_buf *msi2500_get_next_fill_buf(
|
struct msi2500_dev *dev)
|
{
|
unsigned long flags;
|
struct msi2500_frame_buf *buf = NULL;
|
|
spin_lock_irqsave(&dev->queued_bufs_lock, flags);
|
if (list_empty(&dev->queued_bufs))
|
goto leave;
|
|
buf = list_entry(dev->queued_bufs.next, struct msi2500_frame_buf, list);
|
list_del(&buf->list);
|
leave:
|
spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
|
return buf;
|
}
|
|
/*
|
* +===========================================================================
|
* | 00-1023 | USB packet type '504'
|
* +===========================================================================
|
* | 00- 03 | sequence number of first sample in that USB packet
|
* +---------------------------------------------------------------------------
|
* | 04- 15 | garbage
|
* +---------------------------------------------------------------------------
|
* | 16-1023 | samples
|
* +---------------------------------------------------------------------------
|
* signed 8-bit sample
|
* 504 * 2 = 1008 samples
|
*
|
*
|
* +===========================================================================
|
* | 00-1023 | USB packet type '384'
|
* +===========================================================================
|
* | 00- 03 | sequence number of first sample in that USB packet
|
* +---------------------------------------------------------------------------
|
* | 04- 15 | garbage
|
* +---------------------------------------------------------------------------
|
* | 16- 175 | samples
|
* +---------------------------------------------------------------------------
|
* | 176- 179 | control bits for previous samples
|
* +---------------------------------------------------------------------------
|
* | 180- 339 | samples
|
* +---------------------------------------------------------------------------
|
* | 340- 343 | control bits for previous samples
|
* +---------------------------------------------------------------------------
|
* | 344- 503 | samples
|
* +---------------------------------------------------------------------------
|
* | 504- 507 | control bits for previous samples
|
* +---------------------------------------------------------------------------
|
* | 508- 667 | samples
|
* +---------------------------------------------------------------------------
|
* | 668- 671 | control bits for previous samples
|
* +---------------------------------------------------------------------------
|
* | 672- 831 | samples
|
* +---------------------------------------------------------------------------
|
* | 832- 835 | control bits for previous samples
|
* +---------------------------------------------------------------------------
|
* | 836- 995 | samples
|
* +---------------------------------------------------------------------------
|
* | 996- 999 | control bits for previous samples
|
* +---------------------------------------------------------------------------
|
* | 1000-1023 | garbage
|
* +---------------------------------------------------------------------------
|
*
|
* Bytes 4 - 7 could have some meaning?
|
*
|
* Control bits for previous samples is 32-bit field, containing 16 x 2-bit
|
* numbers. This results one 2-bit number for 8 samples. It is likely used for
|
* for bit shifting sample by given bits, increasing actual sampling resolution.
|
* Number 2 (0b10) was never seen.
|
*
|
* 6 * 16 * 2 * 4 = 768 samples. 768 * 4 = 3072 bytes
|
*
|
*
|
* +===========================================================================
|
* | 00-1023 | USB packet type '336'
|
* +===========================================================================
|
* | 00- 03 | sequence number of first sample in that USB packet
|
* +---------------------------------------------------------------------------
|
* | 04- 15 | garbage
|
* +---------------------------------------------------------------------------
|
* | 16-1023 | samples
|
* +---------------------------------------------------------------------------
|
* signed 12-bit sample
|
*
|
*
|
* +===========================================================================
|
* | 00-1023 | USB packet type '252'
|
* +===========================================================================
|
* | 00- 03 | sequence number of first sample in that USB packet
|
* +---------------------------------------------------------------------------
|
* | 04- 15 | garbage
|
* +---------------------------------------------------------------------------
|
* | 16-1023 | samples
|
* +---------------------------------------------------------------------------
|
* signed 14-bit sample
|
*/
|
|
static int msi2500_convert_stream(struct msi2500_dev *dev, u8 *dst, u8 *src,
|
unsigned int src_len)
|
{
|
unsigned int i, j, transactions, dst_len = 0;
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u32 sample[3];
|
|
/* There could be 1-3 1024 byte transactions per packet */
|
transactions = src_len / 1024;
|
|
for (i = 0; i < transactions; i++) {
|
sample[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 |
|
src[0] << 0;
|
if (i == 0 && dev->next_sample != sample[0]) {
|
dev_dbg_ratelimited(dev->dev,
|
"%d samples lost, %d %08x:%08x\n",
|
sample[0] - dev->next_sample,
|
src_len, dev->next_sample,
|
sample[0]);
|
}
|
|
/*
|
* Dump all unknown 'garbage' data - maybe we will discover
|
* someday if there is something rational...
|
*/
|
dev_dbg_ratelimited(dev->dev, "%*ph\n", 12, &src[4]);
|
|
src += 16; /* skip header */
|
|
switch (dev->pixelformat) {
|
case V4L2_SDR_FMT_CU8: /* 504 x IQ samples */
|
{
|
s8 *s8src = (s8 *)src;
|
u8 *u8dst = (u8 *)dst;
|
|
for (j = 0; j < 1008; j++)
|
*u8dst++ = *s8src++ + 128;
|
|
src += 1008;
|
dst += 1008;
|
dst_len += 1008;
|
dev->next_sample = sample[i] + 504;
|
break;
|
}
|
case V4L2_SDR_FMT_CU16LE: /* 252 x IQ samples */
|
{
|
s16 *s16src = (s16 *)src;
|
u16 *u16dst = (u16 *)dst;
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struct {signed int x:14; } se; /* sign extension */
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unsigned int utmp;
|
|
for (j = 0; j < 1008; j += 2) {
|
/* sign extension from 14-bit to signed int */
|
se.x = *s16src++;
|
/* from signed int to unsigned int */
|
utmp = se.x + 8192;
|
/* from 14-bit to 16-bit */
|
*u16dst++ = utmp << 2 | utmp >> 12;
|
}
|
|
src += 1008;
|
dst += 1008;
|
dst_len += 1008;
|
dev->next_sample = sample[i] + 252;
|
break;
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}
|
case MSI2500_PIX_FMT_SDR_MSI2500_384: /* 384 x IQ samples */
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/* Dump unknown 'garbage' data */
|
dev_dbg_ratelimited(dev->dev, "%*ph\n", 24, &src[1000]);
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memcpy(dst, src, 984);
|
src += 984 + 24;
|
dst += 984;
|
dst_len += 984;
|
dev->next_sample = sample[i] + 384;
|
break;
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case V4L2_SDR_FMT_CS8: /* 504 x IQ samples */
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memcpy(dst, src, 1008);
|
src += 1008;
|
dst += 1008;
|
dst_len += 1008;
|
dev->next_sample = sample[i] + 504;
|
break;
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case MSI2500_PIX_FMT_SDR_S12: /* 336 x IQ samples */
|
memcpy(dst, src, 1008);
|
src += 1008;
|
dst += 1008;
|
dst_len += 1008;
|
dev->next_sample = sample[i] + 336;
|
break;
|
case V4L2_SDR_FMT_CS14LE: /* 252 x IQ samples */
|
memcpy(dst, src, 1008);
|
src += 1008;
|
dst += 1008;
|
dst_len += 1008;
|
dev->next_sample = sample[i] + 252;
|
break;
|
default:
|
break;
|
}
|
}
|
|
/* calculate sample rate and output it in 10 seconds intervals */
|
if (unlikely(time_is_before_jiffies(dev->jiffies_next))) {
|
#define MSECS 10000UL
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unsigned int msecs = jiffies_to_msecs(jiffies -
|
dev->jiffies_next + msecs_to_jiffies(MSECS));
|
unsigned int samples = dev->next_sample - dev->sample;
|
|
dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS);
|
dev->sample = dev->next_sample;
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dev_dbg(dev->dev, "size=%u samples=%u msecs=%u sample rate=%lu\n",
|
src_len, samples, msecs,
|
samples * 1000UL / msecs);
|
}
|
|
return dst_len;
|
}
|
|
/*
|
* This gets called for the Isochronous pipe (stream). This is done in interrupt
|
* time, so it has to be fast, not crash, and not stall. Neat.
|
*/
|
static void msi2500_isoc_handler(struct urb *urb)
|
{
|
struct msi2500_dev *dev = (struct msi2500_dev *)urb->context;
|
int i, flen, fstatus;
|
unsigned char *iso_buf = NULL;
|
struct msi2500_frame_buf *fbuf;
|
|
if (unlikely(urb->status == -ENOENT ||
|
urb->status == -ECONNRESET ||
|
urb->status == -ESHUTDOWN)) {
|
dev_dbg(dev->dev, "URB (%p) unlinked %ssynchronously\n",
|
urb, urb->status == -ENOENT ? "" : "a");
|
return;
|
}
|
|
if (unlikely(urb->status != 0)) {
|
dev_dbg(dev->dev, "called with status %d\n", urb->status);
|
/* Give up after a number of contiguous errors */
|
if (++dev->isoc_errors > MAX_ISOC_ERRORS)
|
dev_dbg(dev->dev, "Too many ISOC errors, bailing out\n");
|
goto handler_end;
|
} else {
|
/* Reset ISOC error counter. We did get here, after all. */
|
dev->isoc_errors = 0;
|
}
|
|
/* Compact data */
|
for (i = 0; i < urb->number_of_packets; i++) {
|
void *ptr;
|
|
/* Check frame error */
|
fstatus = urb->iso_frame_desc[i].status;
|
if (unlikely(fstatus)) {
|
dev_dbg_ratelimited(dev->dev,
|
"frame=%d/%d has error %d skipping\n",
|
i, urb->number_of_packets, fstatus);
|
continue;
|
}
|
|
/* Check if that frame contains data */
|
flen = urb->iso_frame_desc[i].actual_length;
|
if (unlikely(flen == 0))
|
continue;
|
|
iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset;
|
|
/* Get free framebuffer */
|
fbuf = msi2500_get_next_fill_buf(dev);
|
if (unlikely(fbuf == NULL)) {
|
dev->vb_full++;
|
dev_dbg_ratelimited(dev->dev,
|
"videobuf is full, %d packets dropped\n",
|
dev->vb_full);
|
continue;
|
}
|
|
/* fill framebuffer */
|
ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0);
|
flen = msi2500_convert_stream(dev, ptr, iso_buf, flen);
|
vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, flen);
|
vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
|
}
|
|
handler_end:
|
i = usb_submit_urb(urb, GFP_ATOMIC);
|
if (unlikely(i != 0))
|
dev_dbg(dev->dev, "Error (%d) re-submitting urb\n", i);
|
}
|
|
static void msi2500_iso_stop(struct msi2500_dev *dev)
|
{
|
int i;
|
|
dev_dbg(dev->dev, "\n");
|
|
/* Unlinking ISOC buffers one by one */
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
if (dev->urbs[i]) {
|
dev_dbg(dev->dev, "Unlinking URB %p\n", dev->urbs[i]);
|
usb_kill_urb(dev->urbs[i]);
|
}
|
}
|
}
|
|
static void msi2500_iso_free(struct msi2500_dev *dev)
|
{
|
int i;
|
|
dev_dbg(dev->dev, "\n");
|
|
/* Freeing ISOC buffers one by one */
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
if (dev->urbs[i]) {
|
dev_dbg(dev->dev, "Freeing URB\n");
|
if (dev->urbs[i]->transfer_buffer) {
|
usb_free_coherent(dev->udev,
|
dev->urbs[i]->transfer_buffer_length,
|
dev->urbs[i]->transfer_buffer,
|
dev->urbs[i]->transfer_dma);
|
}
|
usb_free_urb(dev->urbs[i]);
|
dev->urbs[i] = NULL;
|
}
|
}
|
}
|
|
/* Both v4l2_lock and vb_queue_lock should be locked when calling this */
|
static void msi2500_isoc_cleanup(struct msi2500_dev *dev)
|
{
|
dev_dbg(dev->dev, "\n");
|
|
msi2500_iso_stop(dev);
|
msi2500_iso_free(dev);
|
}
|
|
/* Both v4l2_lock and vb_queue_lock should be locked when calling this */
|
static int msi2500_isoc_init(struct msi2500_dev *dev)
|
{
|
struct urb *urb;
|
int i, j, ret;
|
|
dev_dbg(dev->dev, "\n");
|
|
dev->isoc_errors = 0;
|
|
ret = usb_set_interface(dev->udev, 0, 1);
|
if (ret)
|
return ret;
|
|
/* Allocate and init Isochronuous urbs */
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL);
|
if (urb == NULL) {
|
msi2500_isoc_cleanup(dev);
|
return -ENOMEM;
|
}
|
dev->urbs[i] = urb;
|
dev_dbg(dev->dev, "Allocated URB at 0x%p\n", urb);
|
|
urb->interval = 1;
|
urb->dev = dev->udev;
|
urb->pipe = usb_rcvisocpipe(dev->udev, 0x81);
|
urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP;
|
urb->transfer_buffer = usb_alloc_coherent(dev->udev,
|
ISO_BUFFER_SIZE,
|
GFP_KERNEL, &urb->transfer_dma);
|
if (urb->transfer_buffer == NULL) {
|
dev_err(dev->dev,
|
"Failed to allocate urb buffer %d\n", i);
|
msi2500_isoc_cleanup(dev);
|
return -ENOMEM;
|
}
|
urb->transfer_buffer_length = ISO_BUFFER_SIZE;
|
urb->complete = msi2500_isoc_handler;
|
urb->context = dev;
|
urb->start_frame = 0;
|
urb->number_of_packets = ISO_FRAMES_PER_DESC;
|
for (j = 0; j < ISO_FRAMES_PER_DESC; j++) {
|
urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE;
|
urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE;
|
}
|
}
|
|
/* link */
|
for (i = 0; i < MAX_ISO_BUFS; i++) {
|
ret = usb_submit_urb(dev->urbs[i], GFP_KERNEL);
|
if (ret) {
|
dev_err(dev->dev,
|
"usb_submit_urb %d failed with error %d\n",
|
i, ret);
|
msi2500_isoc_cleanup(dev);
|
return ret;
|
}
|
dev_dbg(dev->dev, "URB 0x%p submitted.\n", dev->urbs[i]);
|
}
|
|
/* All is done... */
|
return 0;
|
}
|
|
/* Must be called with vb_queue_lock hold */
|
static void msi2500_cleanup_queued_bufs(struct msi2500_dev *dev)
|
{
|
unsigned long flags;
|
|
dev_dbg(dev->dev, "\n");
|
|
spin_lock_irqsave(&dev->queued_bufs_lock, flags);
|
while (!list_empty(&dev->queued_bufs)) {
|
struct msi2500_frame_buf *buf;
|
|
buf = list_entry(dev->queued_bufs.next,
|
struct msi2500_frame_buf, list);
|
list_del(&buf->list);
|
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
|
}
|
spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
|
}
|
|
/* The user yanked out the cable... */
|
static void msi2500_disconnect(struct usb_interface *intf)
|
{
|
struct v4l2_device *v = usb_get_intfdata(intf);
|
struct msi2500_dev *dev =
|
container_of(v, struct msi2500_dev, v4l2_dev);
|
|
dev_dbg(dev->dev, "\n");
|
|
mutex_lock(&dev->vb_queue_lock);
|
mutex_lock(&dev->v4l2_lock);
|
/* No need to keep the urbs around after disconnection */
|
dev->udev = NULL;
|
v4l2_device_disconnect(&dev->v4l2_dev);
|
video_unregister_device(&dev->vdev);
|
spi_unregister_master(dev->master);
|
mutex_unlock(&dev->v4l2_lock);
|
mutex_unlock(&dev->vb_queue_lock);
|
|
v4l2_device_put(&dev->v4l2_dev);
|
}
|
|
static int msi2500_querycap(struct file *file, void *fh,
|
struct v4l2_capability *cap)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
|
dev_dbg(dev->dev, "\n");
|
|
strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
|
strscpy(cap->card, dev->vdev.name, sizeof(cap->card));
|
usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));
|
return 0;
|
}
|
|
/* Videobuf2 operations */
|
static int msi2500_queue_setup(struct vb2_queue *vq,
|
unsigned int *nbuffers,
|
unsigned int *nplanes, unsigned int sizes[],
|
struct device *alloc_devs[])
|
{
|
struct msi2500_dev *dev = vb2_get_drv_priv(vq);
|
|
dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers);
|
|
/* Absolute min and max number of buffers available for mmap() */
|
*nbuffers = clamp_t(unsigned int, *nbuffers, 8, 32);
|
*nplanes = 1;
|
sizes[0] = PAGE_ALIGN(dev->buffersize);
|
dev_dbg(dev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
|
return 0;
|
}
|
|
static void msi2500_buf_queue(struct vb2_buffer *vb)
|
{
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
struct msi2500_dev *dev = vb2_get_drv_priv(vb->vb2_queue);
|
struct msi2500_frame_buf *buf = container_of(vbuf,
|
struct msi2500_frame_buf,
|
vb);
|
unsigned long flags;
|
|
/* Check the device has not disconnected between prep and queuing */
|
if (unlikely(!dev->udev)) {
|
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
|
return;
|
}
|
|
spin_lock_irqsave(&dev->queued_bufs_lock, flags);
|
list_add_tail(&buf->list, &dev->queued_bufs);
|
spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);
|
}
|
|
#define CMD_WREG 0x41
|
#define CMD_START_STREAMING 0x43
|
#define CMD_STOP_STREAMING 0x45
|
#define CMD_READ_UNKNOWN 0x48
|
|
#define msi2500_dbg_usb_control_msg(_dev, _r, _t, _v, _i, _b, _l) { \
|
char *_direction; \
|
if (_t & USB_DIR_IN) \
|
_direction = "<<<"; \
|
else \
|
_direction = ">>>"; \
|
dev_dbg(_dev, "%02x %02x %02x %02x %02x %02x %02x %02x %s %*ph\n", \
|
_t, _r, _v & 0xff, _v >> 8, _i & 0xff, _i >> 8, \
|
_l & 0xff, _l >> 8, _direction, _l, _b); \
|
}
|
|
static int msi2500_ctrl_msg(struct msi2500_dev *dev, u8 cmd, u32 data)
|
{
|
int ret;
|
u8 request = cmd;
|
u8 requesttype = USB_DIR_OUT | USB_TYPE_VENDOR;
|
u16 value = (data >> 0) & 0xffff;
|
u16 index = (data >> 16) & 0xffff;
|
|
msi2500_dbg_usb_control_msg(dev->dev, request, requesttype,
|
value, index, NULL, 0);
|
ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0), request,
|
requesttype, value, index, NULL, 0, 2000);
|
if (ret)
|
dev_err(dev->dev, "failed %d, cmd %02x, data %04x\n",
|
ret, cmd, data);
|
|
return ret;
|
}
|
|
static int msi2500_set_usb_adc(struct msi2500_dev *dev)
|
{
|
int ret;
|
unsigned int f_vco, f_sr, div_n, k, k_cw, div_out;
|
u32 reg3, reg4, reg7;
|
struct v4l2_ctrl *bandwidth_auto;
|
struct v4l2_ctrl *bandwidth;
|
|
f_sr = dev->f_adc;
|
|
/* set tuner, subdev, filters according to sampling rate */
|
bandwidth_auto = v4l2_ctrl_find(&dev->hdl,
|
V4L2_CID_RF_TUNER_BANDWIDTH_AUTO);
|
if (v4l2_ctrl_g_ctrl(bandwidth_auto)) {
|
bandwidth = v4l2_ctrl_find(&dev->hdl,
|
V4L2_CID_RF_TUNER_BANDWIDTH);
|
v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc);
|
}
|
|
/* select stream format */
|
switch (dev->pixelformat) {
|
case V4L2_SDR_FMT_CU8:
|
reg7 = 0x000c9407; /* 504 */
|
break;
|
case V4L2_SDR_FMT_CU16LE:
|
reg7 = 0x00009407; /* 252 */
|
break;
|
case V4L2_SDR_FMT_CS8:
|
reg7 = 0x000c9407; /* 504 */
|
break;
|
case MSI2500_PIX_FMT_SDR_MSI2500_384:
|
reg7 = 0x0000a507; /* 384 */
|
break;
|
case MSI2500_PIX_FMT_SDR_S12:
|
reg7 = 0x00008507; /* 336 */
|
break;
|
case V4L2_SDR_FMT_CS14LE:
|
reg7 = 0x00009407; /* 252 */
|
break;
|
default:
|
reg7 = 0x000c9407; /* 504 */
|
break;
|
}
|
|
/*
|
* Fractional-N synthesizer
|
*
|
* +----------------------------------------+
|
* v |
|
* Fref +----+ +-------+ +-----+ +------+ +---+
|
* ------> | PD | --> | VCO | --> | /2 | ------> | /N.F | <-- | K |
|
* +----+ +-------+ +-----+ +------+ +---+
|
* |
|
* |
|
* v
|
* +-------+ +-----+ Fout
|
* | /Rout | --> | /12 | ------>
|
* +-------+ +-----+
|
*/
|
/*
|
* Synthesizer config is just a educated guess...
|
*
|
* [7:0] 0x03, register address
|
* [8] 1, power control
|
* [9] ?, power control
|
* [12:10] output divider
|
* [13] 0 ?
|
* [14] 0 ?
|
* [15] fractional MSB, bit 20
|
* [16:19] N
|
* [23:20] ?
|
* [24:31] 0x01
|
*
|
* output divider
|
* val div
|
* 0 - (invalid)
|
* 1 4
|
* 2 6
|
* 3 8
|
* 4 10
|
* 5 12
|
* 6 14
|
* 7 16
|
*
|
* VCO 202000000 - 720000000++
|
*/
|
|
#define F_REF 24000000
|
#define DIV_PRE_N 2
|
#define DIV_LO_OUT 12
|
reg3 = 0x01000303;
|
reg4 = 0x00000004;
|
|
/* XXX: Filters? AGC? VCO band? */
|
if (f_sr < 6000000)
|
reg3 |= 0x1 << 20;
|
else if (f_sr < 7000000)
|
reg3 |= 0x5 << 20;
|
else if (f_sr < 8500000)
|
reg3 |= 0x9 << 20;
|
else
|
reg3 |= 0xd << 20;
|
|
for (div_out = 4; div_out < 16; div_out += 2) {
|
f_vco = f_sr * div_out * DIV_LO_OUT;
|
dev_dbg(dev->dev, "div_out=%u f_vco=%u\n", div_out, f_vco);
|
if (f_vco >= 202000000)
|
break;
|
}
|
|
/* Calculate PLL integer and fractional control word. */
|
div_n = div_u64_rem(f_vco, DIV_PRE_N * F_REF, &k);
|
k_cw = div_u64((u64) k * 0x200000, DIV_PRE_N * F_REF);
|
|
reg3 |= div_n << 16;
|
reg3 |= (div_out / 2 - 1) << 10;
|
reg3 |= ((k_cw >> 20) & 0x000001) << 15; /* [20] */
|
reg4 |= ((k_cw >> 0) & 0x0fffff) << 8; /* [19:0] */
|
|
dev_dbg(dev->dev,
|
"f_sr=%u f_vco=%u div_n=%u k=%u div_out=%u reg3=%08x reg4=%08x\n",
|
f_sr, f_vco, div_n, k, div_out, reg3, reg4);
|
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00608008);
|
if (ret)
|
goto err;
|
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00000c05);
|
if (ret)
|
goto err;
|
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00020000);
|
if (ret)
|
goto err;
|
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00480102);
|
if (ret)
|
goto err;
|
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, 0x00f38008);
|
if (ret)
|
goto err;
|
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, reg7);
|
if (ret)
|
goto err;
|
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, reg4);
|
if (ret)
|
goto err;
|
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, reg3);
|
err:
|
return ret;
|
}
|
|
static int msi2500_start_streaming(struct vb2_queue *vq, unsigned int count)
|
{
|
struct msi2500_dev *dev = vb2_get_drv_priv(vq);
|
int ret;
|
|
dev_dbg(dev->dev, "\n");
|
|
if (!dev->udev)
|
return -ENODEV;
|
|
if (mutex_lock_interruptible(&dev->v4l2_lock))
|
return -ERESTARTSYS;
|
|
/* wake-up tuner */
|
v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1);
|
|
ret = msi2500_set_usb_adc(dev);
|
|
ret = msi2500_isoc_init(dev);
|
if (ret)
|
msi2500_cleanup_queued_bufs(dev);
|
|
ret = msi2500_ctrl_msg(dev, CMD_START_STREAMING, 0);
|
|
mutex_unlock(&dev->v4l2_lock);
|
|
return ret;
|
}
|
|
static void msi2500_stop_streaming(struct vb2_queue *vq)
|
{
|
struct msi2500_dev *dev = vb2_get_drv_priv(vq);
|
|
dev_dbg(dev->dev, "\n");
|
|
mutex_lock(&dev->v4l2_lock);
|
|
if (dev->udev)
|
msi2500_isoc_cleanup(dev);
|
|
msi2500_cleanup_queued_bufs(dev);
|
|
/* according to tests, at least 700us delay is required */
|
msleep(20);
|
if (!msi2500_ctrl_msg(dev, CMD_STOP_STREAMING, 0)) {
|
/* sleep USB IF / ADC */
|
msi2500_ctrl_msg(dev, CMD_WREG, 0x01000003);
|
}
|
|
/* sleep tuner */
|
v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0);
|
|
mutex_unlock(&dev->v4l2_lock);
|
}
|
|
static const struct vb2_ops msi2500_vb2_ops = {
|
.queue_setup = msi2500_queue_setup,
|
.buf_queue = msi2500_buf_queue,
|
.start_streaming = msi2500_start_streaming,
|
.stop_streaming = msi2500_stop_streaming,
|
.wait_prepare = vb2_ops_wait_prepare,
|
.wait_finish = vb2_ops_wait_finish,
|
};
|
|
static int msi2500_enum_fmt_sdr_cap(struct file *file, void *priv,
|
struct v4l2_fmtdesc *f)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
|
dev_dbg(dev->dev, "index=%d\n", f->index);
|
|
if (f->index >= dev->num_formats)
|
return -EINVAL;
|
|
f->pixelformat = formats[f->index].pixelformat;
|
|
return 0;
|
}
|
|
static int msi2500_g_fmt_sdr_cap(struct file *file, void *priv,
|
struct v4l2_format *f)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
|
dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n",
|
(char *)&dev->pixelformat);
|
|
f->fmt.sdr.pixelformat = dev->pixelformat;
|
f->fmt.sdr.buffersize = dev->buffersize;
|
memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
|
|
return 0;
|
}
|
|
static int msi2500_s_fmt_sdr_cap(struct file *file, void *priv,
|
struct v4l2_format *f)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
struct vb2_queue *q = &dev->vb_queue;
|
int i;
|
|
dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n",
|
(char *)&f->fmt.sdr.pixelformat);
|
|
if (vb2_is_busy(q))
|
return -EBUSY;
|
|
memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
|
for (i = 0; i < dev->num_formats; i++) {
|
if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
|
dev->pixelformat = formats[i].pixelformat;
|
dev->buffersize = formats[i].buffersize;
|
f->fmt.sdr.buffersize = formats[i].buffersize;
|
return 0;
|
}
|
}
|
|
dev->pixelformat = formats[0].pixelformat;
|
dev->buffersize = formats[0].buffersize;
|
f->fmt.sdr.pixelformat = formats[0].pixelformat;
|
f->fmt.sdr.buffersize = formats[0].buffersize;
|
|
return 0;
|
}
|
|
static int msi2500_try_fmt_sdr_cap(struct file *file, void *priv,
|
struct v4l2_format *f)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
int i;
|
|
dev_dbg(dev->dev, "pixelformat fourcc %4.4s\n",
|
(char *)&f->fmt.sdr.pixelformat);
|
|
memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved));
|
for (i = 0; i < dev->num_formats; i++) {
|
if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {
|
f->fmt.sdr.buffersize = formats[i].buffersize;
|
return 0;
|
}
|
}
|
|
f->fmt.sdr.pixelformat = formats[0].pixelformat;
|
f->fmt.sdr.buffersize = formats[0].buffersize;
|
|
return 0;
|
}
|
|
static int msi2500_s_tuner(struct file *file, void *priv,
|
const struct v4l2_tuner *v)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
int ret;
|
|
dev_dbg(dev->dev, "index=%d\n", v->index);
|
|
if (v->index == 0)
|
ret = 0;
|
else if (v->index == 1)
|
ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v);
|
else
|
ret = -EINVAL;
|
|
return ret;
|
}
|
|
static int msi2500_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
int ret;
|
|
dev_dbg(dev->dev, "index=%d\n", v->index);
|
|
if (v->index == 0) {
|
strscpy(v->name, "Mirics MSi2500", sizeof(v->name));
|
v->type = V4L2_TUNER_ADC;
|
v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;
|
v->rangelow = 1200000;
|
v->rangehigh = 15000000;
|
ret = 0;
|
} else if (v->index == 1) {
|
ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v);
|
} else {
|
ret = -EINVAL;
|
}
|
|
return ret;
|
}
|
|
static int msi2500_g_frequency(struct file *file, void *priv,
|
struct v4l2_frequency *f)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
int ret = 0;
|
|
dev_dbg(dev->dev, "tuner=%d type=%d\n", f->tuner, f->type);
|
|
if (f->tuner == 0) {
|
f->frequency = dev->f_adc;
|
ret = 0;
|
} else if (f->tuner == 1) {
|
f->type = V4L2_TUNER_RF;
|
ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f);
|
} else {
|
ret = -EINVAL;
|
}
|
|
return ret;
|
}
|
|
static int msi2500_s_frequency(struct file *file, void *priv,
|
const struct v4l2_frequency *f)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
int ret;
|
|
dev_dbg(dev->dev, "tuner=%d type=%d frequency=%u\n",
|
f->tuner, f->type, f->frequency);
|
|
if (f->tuner == 0) {
|
dev->f_adc = clamp_t(unsigned int, f->frequency,
|
bands[0].rangelow,
|
bands[0].rangehigh);
|
dev_dbg(dev->dev, "ADC frequency=%u Hz\n", dev->f_adc);
|
ret = msi2500_set_usb_adc(dev);
|
} else if (f->tuner == 1) {
|
ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f);
|
} else {
|
ret = -EINVAL;
|
}
|
|
return ret;
|
}
|
|
static int msi2500_enum_freq_bands(struct file *file, void *priv,
|
struct v4l2_frequency_band *band)
|
{
|
struct msi2500_dev *dev = video_drvdata(file);
|
int ret;
|
|
dev_dbg(dev->dev, "tuner=%d type=%d index=%d\n",
|
band->tuner, band->type, band->index);
|
|
if (band->tuner == 0) {
|
if (band->index >= ARRAY_SIZE(bands)) {
|
ret = -EINVAL;
|
} else {
|
*band = bands[band->index];
|
ret = 0;
|
}
|
} else if (band->tuner == 1) {
|
ret = v4l2_subdev_call(dev->v4l2_subdev, tuner,
|
enum_freq_bands, band);
|
} else {
|
ret = -EINVAL;
|
}
|
|
return ret;
|
}
|
|
static const struct v4l2_ioctl_ops msi2500_ioctl_ops = {
|
.vidioc_querycap = msi2500_querycap,
|
|
.vidioc_enum_fmt_sdr_cap = msi2500_enum_fmt_sdr_cap,
|
.vidioc_g_fmt_sdr_cap = msi2500_g_fmt_sdr_cap,
|
.vidioc_s_fmt_sdr_cap = msi2500_s_fmt_sdr_cap,
|
.vidioc_try_fmt_sdr_cap = msi2500_try_fmt_sdr_cap,
|
|
.vidioc_reqbufs = vb2_ioctl_reqbufs,
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
|
.vidioc_streamon = vb2_ioctl_streamon,
|
.vidioc_streamoff = vb2_ioctl_streamoff,
|
|
.vidioc_g_tuner = msi2500_g_tuner,
|
.vidioc_s_tuner = msi2500_s_tuner,
|
|
.vidioc_g_frequency = msi2500_g_frequency,
|
.vidioc_s_frequency = msi2500_s_frequency,
|
.vidioc_enum_freq_bands = msi2500_enum_freq_bands,
|
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
.vidioc_log_status = v4l2_ctrl_log_status,
|
};
|
|
static const struct v4l2_file_operations msi2500_fops = {
|
.owner = THIS_MODULE,
|
.open = v4l2_fh_open,
|
.release = vb2_fop_release,
|
.read = vb2_fop_read,
|
.poll = vb2_fop_poll,
|
.mmap = vb2_fop_mmap,
|
.unlocked_ioctl = video_ioctl2,
|
};
|
|
static const struct video_device msi2500_template = {
|
.name = "Mirics MSi3101 SDR Dongle",
|
.release = video_device_release_empty,
|
.fops = &msi2500_fops,
|
.ioctl_ops = &msi2500_ioctl_ops,
|
};
|
|
static void msi2500_video_release(struct v4l2_device *v)
|
{
|
struct msi2500_dev *dev = container_of(v, struct msi2500_dev, v4l2_dev);
|
|
v4l2_ctrl_handler_free(&dev->hdl);
|
v4l2_device_unregister(&dev->v4l2_dev);
|
kfree(dev);
|
}
|
|
static int msi2500_transfer_one_message(struct spi_master *master,
|
struct spi_message *m)
|
{
|
struct msi2500_dev *dev = spi_master_get_devdata(master);
|
struct spi_transfer *t;
|
int ret = 0;
|
u32 data;
|
|
list_for_each_entry(t, &m->transfers, transfer_list) {
|
dev_dbg(dev->dev, "msg=%*ph\n", t->len, t->tx_buf);
|
data = 0x09; /* reg 9 is SPI adapter */
|
data |= ((u8 *)t->tx_buf)[0] << 8;
|
data |= ((u8 *)t->tx_buf)[1] << 16;
|
data |= ((u8 *)t->tx_buf)[2] << 24;
|
ret = msi2500_ctrl_msg(dev, CMD_WREG, data);
|
}
|
|
m->status = ret;
|
spi_finalize_current_message(master);
|
return ret;
|
}
|
|
static int msi2500_probe(struct usb_interface *intf,
|
const struct usb_device_id *id)
|
{
|
struct msi2500_dev *dev;
|
struct v4l2_subdev *sd;
|
struct spi_master *master;
|
int ret;
|
static struct spi_board_info board_info = {
|
.modalias = "msi001",
|
.bus_num = 0,
|
.chip_select = 0,
|
.max_speed_hz = 12000000,
|
};
|
|
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
|
if (!dev) {
|
ret = -ENOMEM;
|
goto err;
|
}
|
|
mutex_init(&dev->v4l2_lock);
|
mutex_init(&dev->vb_queue_lock);
|
spin_lock_init(&dev->queued_bufs_lock);
|
INIT_LIST_HEAD(&dev->queued_bufs);
|
dev->dev = &intf->dev;
|
dev->udev = interface_to_usbdev(intf);
|
dev->f_adc = bands[0].rangelow;
|
dev->pixelformat = formats[0].pixelformat;
|
dev->buffersize = formats[0].buffersize;
|
dev->num_formats = NUM_FORMATS;
|
if (!msi2500_emulated_fmt)
|
dev->num_formats -= 2;
|
|
/* Init videobuf2 queue structure */
|
dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE;
|
dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;
|
dev->vb_queue.drv_priv = dev;
|
dev->vb_queue.buf_struct_size = sizeof(struct msi2500_frame_buf);
|
dev->vb_queue.ops = &msi2500_vb2_ops;
|
dev->vb_queue.mem_ops = &vb2_vmalloc_memops;
|
dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
ret = vb2_queue_init(&dev->vb_queue);
|
if (ret) {
|
dev_err(dev->dev, "Could not initialize vb2 queue\n");
|
goto err_free_mem;
|
}
|
|
/* Init video_device structure */
|
dev->vdev = msi2500_template;
|
dev->vdev.queue = &dev->vb_queue;
|
dev->vdev.queue->lock = &dev->vb_queue_lock;
|
video_set_drvdata(&dev->vdev, dev);
|
|
/* Register the v4l2_device structure */
|
dev->v4l2_dev.release = msi2500_video_release;
|
ret = v4l2_device_register(&intf->dev, &dev->v4l2_dev);
|
if (ret) {
|
dev_err(dev->dev, "Failed to register v4l2-device (%d)\n", ret);
|
goto err_free_mem;
|
}
|
|
/* SPI master adapter */
|
master = spi_alloc_master(dev->dev, 0);
|
if (master == NULL) {
|
ret = -ENOMEM;
|
goto err_unregister_v4l2_dev;
|
}
|
|
dev->master = master;
|
master->bus_num = -1;
|
master->num_chipselect = 1;
|
master->transfer_one_message = msi2500_transfer_one_message;
|
spi_master_set_devdata(master, dev);
|
ret = spi_register_master(master);
|
if (ret) {
|
spi_master_put(master);
|
goto err_unregister_v4l2_dev;
|
}
|
|
/* load v4l2 subdevice */
|
sd = v4l2_spi_new_subdev(&dev->v4l2_dev, master, &board_info);
|
dev->v4l2_subdev = sd;
|
if (sd == NULL) {
|
dev_err(dev->dev, "cannot get v4l2 subdevice\n");
|
ret = -ENODEV;
|
goto err_unregister_master;
|
}
|
|
/* Register controls */
|
v4l2_ctrl_handler_init(&dev->hdl, 0);
|
if (dev->hdl.error) {
|
ret = dev->hdl.error;
|
dev_err(dev->dev, "Could not initialize controls\n");
|
goto err_free_controls;
|
}
|
|
/* currently all controls are from subdev */
|
v4l2_ctrl_add_handler(&dev->hdl, sd->ctrl_handler, NULL, true);
|
|
dev->v4l2_dev.ctrl_handler = &dev->hdl;
|
dev->vdev.v4l2_dev = &dev->v4l2_dev;
|
dev->vdev.lock = &dev->v4l2_lock;
|
dev->vdev.device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |
|
V4L2_CAP_READWRITE | V4L2_CAP_TUNER;
|
|
ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1);
|
if (ret) {
|
dev_err(dev->dev,
|
"Failed to register as video device (%d)\n", ret);
|
goto err_unregister_v4l2_dev;
|
}
|
dev_info(dev->dev, "Registered as %s\n",
|
video_device_node_name(&dev->vdev));
|
dev_notice(dev->dev,
|
"SDR API is still slightly experimental and functionality changes may follow\n");
|
return 0;
|
err_free_controls:
|
v4l2_ctrl_handler_free(&dev->hdl);
|
err_unregister_master:
|
spi_unregister_master(dev->master);
|
err_unregister_v4l2_dev:
|
v4l2_device_unregister(&dev->v4l2_dev);
|
err_free_mem:
|
kfree(dev);
|
err:
|
return ret;
|
}
|
|
/* USB device ID list */
|
static const struct usb_device_id msi2500_id_table[] = {
|
{USB_DEVICE(0x1df7, 0x2500)}, /* Mirics MSi3101 SDR Dongle */
|
{USB_DEVICE(0x2040, 0xd300)}, /* Hauppauge WinTV 133559 LF */
|
{}
|
};
|
MODULE_DEVICE_TABLE(usb, msi2500_id_table);
|
|
/* USB subsystem interface */
|
static struct usb_driver msi2500_driver = {
|
.name = KBUILD_MODNAME,
|
.probe = msi2500_probe,
|
.disconnect = msi2500_disconnect,
|
.id_table = msi2500_id_table,
|
};
|
|
module_usb_driver(msi2500_driver);
|
|
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
|
MODULE_DESCRIPTION("Mirics MSi3101 SDR Dongle");
|
MODULE_LICENSE("GPL");
|
