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linux_dsm_epyc7002/drivers/media/usb/msi2500/msi2500.c
Hans Verkuil 009cb7d579 media: media/usb: don't set description in ENUM_FMT 
The V4L2 core sets the description for the driver in order to ensure
consistent naming.

So drop the strscpy of the description in drivers. Also remove any
description strings in driver-internal structures since those are
no longer needed.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2019-07-22 14:01:05 -04:00

1313 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Mirics MSi2500 driver
* Mirics MSi3101 SDR Dongle driver
*
* Copyright (C) 2013 Antti Palosaari <crope@iki.fi>
*
* That driver is somehow based of pwc driver:
* (C) 1999-2004 Nemosoft Unv.
* (C) 2004-2006 Luc Saillard (luc@saillard.org)
* (C) 2011 Hans de Goede <hdegoede@redhat.com>
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/div64.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <linux/usb.h>
#include <media/videobuf2-v4l2.h>
#include <media/videobuf2-vmalloc.h>
#include <linux/spi/spi.h>
static bool msi2500_emulated_fmt;
module_param_named(emulated_formats, msi2500_emulated_fmt, bool, 0644);
MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");
/*
* iConfiguration 0
* bInterfaceNumber 0
* bAlternateSetting 1
* bNumEndpoints 1
* bEndpointAddress 0x81 EP 1 IN
* bmAttributes 1
* Transfer Type Isochronous
* wMaxPacketSize 0x1400 3x 1024 bytes
* bInterval 1
*/
#define MAX_ISO_BUFS (8)
#define ISO_FRAMES_PER_DESC (8)
#define ISO_MAX_FRAME_SIZE (3 * 1024)
#define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE)
#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 */
static struct msi2500_format formats[] = {
{
.pixelformat = V4L2_SDR_FMT_CS8,
.buffersize = 3 * 1008,
#if 0
}, {
.pixelformat = MSI2500_PIX_FMT_SDR_MSI2500_384,
}, {
.pixelformat = MSI2500_PIX_FMT_SDR_S12,
#endif
}, {
.pixelformat = V4L2_SDR_FMT_CS14LE,
.buffersize = 3 * 1008,
}, {
.pixelformat = V4L2_SDR_FMT_CU8,
.buffersize = 3 * 1008,
}, {
.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 */
struct msi2500_frame_buf {
/* common v4l buffer stuff -- must be first */
struct vb2_v4l2_buffer vb;
struct list_head list;
};
struct msi2500_dev {
struct device *dev;
struct video_device vdev;
struct v4l2_device v4l2_dev;
struct v4l2_subdev *v4l2_subdev;
struct spi_master *master;
/* videobuf2 queue and queued buffers list */
struct vb2_queue vb_queue;
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 */
struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */
/* Pointer to our usb_device, will be NULL after unplug */
struct usb_device *udev; /* Both mutexes most be hold when setting! */
unsigned int f_adc;
u32 pixelformat;
u32 buffersize;
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 */
struct v4l2_ctrl_handler hdl;
u32 next_sample; /* for track lost packets */
u32 sample; /* for sample rate calc */
unsigned long jiffies_next;
};
/* Private functions */
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;
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;
struct {signed int x:14; } se; /* sign extension */
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;
}
case MSI2500_PIX_FMT_SDR_MSI2500_384: /* 384 x IQ samples */
/* Dump unknown 'garbage' data */
dev_dbg_ratelimited(dev->dev, "%*ph\n", 24, &src[1000]);
memcpy(dst, src, 984);
src += 984 + 24;
dst += 984;
dst_len += 984;
dev->next_sample = sample[i] + 384;
break;
case V4L2_SDR_FMT_CS8: /* 504 x IQ samples */
memcpy(dst, src, 1008);
src += 1008;
dst += 1008;
dst_len += 1008;
dev->next_sample = sample[i] + 504;
break;
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
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;
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 = 0;
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");
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