| // 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 (dev->udev && !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"); |