| /* |
| * Mirics MSi3101 SDR Dongle driver |
| * |
| * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * 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-vmalloc.h> |
| #include <linux/spi/spi.h> |
| |
| /* |
| * 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 should be moved to V4L2 API */ |
| #define V4L2_PIX_FMT_SDR_S8 v4l2_fourcc('D', 'S', '0', '8') /* signed 8-bit */ |
| #define V4L2_PIX_FMT_SDR_S12 v4l2_fourcc('D', 'S', '1', '2') /* signed 12-bit */ |
| #define V4L2_PIX_FMT_SDR_S14 v4l2_fourcc('D', 'S', '1', '4') /* signed 14-bit */ |
| #define V4L2_PIX_FMT_SDR_MSI2500_384 v4l2_fourcc('M', '3', '8', '4') /* Mirics MSi2500 format 384 */ |
| |
| 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 msi3101_format { |
| char *name; |
| u32 pixelformat; |
| }; |
| |
| /* format descriptions for capture and preview */ |
| static struct msi3101_format formats[] = { |
| { |
| .name = "IQ U8", |
| .pixelformat = V4L2_SDR_FMT_CU8, |
| }, { |
| .name = "IQ U16LE", |
| .pixelformat = V4L2_SDR_FMT_CU16LE, |
| #if 0 |
| }, { |
| .name = "8-bit signed", |
| .pixelformat = V4L2_PIX_FMT_SDR_S8, |
| }, { |
| .name = "10+2-bit signed", |
| .pixelformat = V4L2_PIX_FMT_SDR_MSI2500_384, |
| }, { |
| .name = "12-bit signed", |
| .pixelformat = V4L2_PIX_FMT_SDR_S12, |
| }, { |
| .name = "14-bit signed", |
| .pixelformat = V4L2_PIX_FMT_SDR_S14, |
| #endif |
| }, |
| }; |
| |
| static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); |
| |
| /* intermediate buffers with raw data from the USB device */ |
| struct msi3101_frame_buf { |
| struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */ |
| struct list_head list; |
| }; |
| |
| struct msi3101_state { |
| 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; |
| |
| 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]; |
| int (*convert_stream)(struct msi3101_state *s, u8 *dst, u8 *src, |
| unsigned int src_len); |
| |
| /* Controls */ |
| struct v4l2_ctrl_handler hdl; |
| |
| u32 next_sample; /* for track lost packets */ |
| u32 sample; /* for sample rate calc */ |
| unsigned long jiffies_next; |
| unsigned int sample_ctrl_bit[4]; |
| }; |
| |
| /* Private functions */ |
| static struct msi3101_frame_buf *msi3101_get_next_fill_buf( |
| struct msi3101_state *s) |
| { |
| unsigned long flags = 0; |
| struct msi3101_frame_buf *buf = NULL; |
| |
| spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| if (list_empty(&s->queued_bufs)) |
| goto leave; |
| |
| buf = list_entry(s->queued_bufs.next, struct msi3101_frame_buf, list); |
| list_del(&buf->list); |
| leave: |
| spin_unlock_irqrestore(&s->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 |
| */ |
| static int msi3101_convert_stream_504(struct msi3101_state *s, u8 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, i_max, dst_len = 0; |
| u32 sample_num[3]; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); |
| |
| /* 504 x I+Q samples */ |
| src += 16; |
| memcpy(dst, src, 1008); |
| src += 1008; |
| dst += 1008; |
| dst_len += 1008; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) { |
| unsigned long jiffies_now = jiffies; |
| unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next); |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies_next = jiffies_now; |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", |
| src_len, samples, msecs, |
| samples * 1000UL / msecs); |
| } |
| |
| /* next sample (sample = sample + i * 504) */ |
| s->next_sample = sample_num[i_max - 1] + 504; |
| |
| return dst_len; |
| } |
| |
| static int msi3101_convert_stream_504_u8(struct msi3101_state *s, u8 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, j, i_max, dst_len = 0; |
| u32 sample_num[3]; |
| s8 *s8src; |
| u8 *u8dst; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| u8dst = (u8 *) dst; |
| |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); |
| |
| /* 504 x I+Q samples */ |
| src += 16; |
| |
| s8src = (s8 *) src; |
| for (j = 0; j < 1008; j++) |
| *u8dst++ = *s8src++ + 128; |
| |
| src += 1008; |
| dst += 1008; |
| dst_len += 1008; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if (unlikely(time_is_before_jiffies(s->jiffies_next))) { |
| #define MSECS 10000UL |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies_next = jiffies + msecs_to_jiffies(MSECS); |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", |
| src_len, samples, MSECS, |
| samples * 1000UL / MSECS); |
| } |
| |
| /* next sample (sample = sample + i * 504) */ |
| s->next_sample = sample_num[i_max - 1] + 504; |
| |
| return dst_len; |
| } |
| |
| /* |
| * +=========================================================================== |
| * | 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 |
| */ |
| static int msi3101_convert_stream_384(struct msi3101_state *s, u8 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, i_max, dst_len = 0; |
| u32 sample_num[3]; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%*ph %*ph\n", 12, &src[4], 24, &src[1000]); |
| |
| /* 384 x I+Q samples */ |
| src += 16; |
| memcpy(dst, src, 984); |
| src += 984 + 24; |
| dst += 984; |
| dst_len += 984; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) { |
| unsigned long jiffies_now = jiffies; |
| unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next); |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies_next = jiffies_now; |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu bits=%d.%d.%d.%d\n", |
| src_len, samples, msecs, |
| samples * 1000UL / msecs, |
| s->sample_ctrl_bit[0], s->sample_ctrl_bit[1], |
| s->sample_ctrl_bit[2], s->sample_ctrl_bit[3]); |
| } |
| |
| /* next sample (sample = sample + i * 384) */ |
| s->next_sample = sample_num[i_max - 1] + 384; |
| |
| return dst_len; |
| } |
| |
| /* |
| * +=========================================================================== |
| * | 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 |
| */ |
| static int msi3101_convert_stream_336(struct msi3101_state *s, u8 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, i_max, dst_len = 0; |
| u32 sample_num[3]; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); |
| |
| /* 336 x I+Q samples */ |
| src += 16; |
| memcpy(dst, src, 1008); |
| src += 1008; |
| dst += 1008; |
| dst_len += 1008; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) { |
| unsigned long jiffies_now = jiffies; |
| unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next); |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies_next = jiffies_now; |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", |
| src_len, samples, msecs, |
| samples * 1000UL / msecs); |
| } |
| |
| /* next sample (sample = sample + i * 336) */ |
| s->next_sample = sample_num[i_max - 1] + 336; |
| |
| return dst_len; |
| } |
| |
| /* |
| * +=========================================================================== |
| * | 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 msi3101_convert_stream_252(struct msi3101_state *s, u8 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, i_max, dst_len = 0; |
| u32 sample_num[3]; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); |
| |
| /* 252 x I+Q samples */ |
| src += 16; |
| memcpy(dst, src, 1008); |
| src += 1008; |
| dst += 1008; |
| dst_len += 1008; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if ((s->jiffies_next + msecs_to_jiffies(10000)) <= jiffies) { |
| unsigned long jiffies_now = jiffies; |
| unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies_next); |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies_next = jiffies_now; |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", |
| src_len, samples, msecs, |
| samples * 1000UL / msecs); |
| } |
| |
| /* next sample (sample = sample + i * 252) */ |
| s->next_sample = sample_num[i_max - 1] + 252; |
| |
| return dst_len; |
| } |
| |
| static int msi3101_convert_stream_252_u16(struct msi3101_state *s, u8 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, j, i_max, dst_len = 0; |
| u32 sample_num[3]; |
| u16 *u16dst = (u16 *) dst; |
| struct {signed int x:14;} se; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); |
| |
| /* 252 x I+Q samples */ |
| src += 16; |
| |
| for (j = 0; j < 1008; j += 4) { |
| unsigned int usample[2]; |
| int ssample[2]; |
| |
| usample[0] = src[j + 0] >> 0 | src[j + 1] << 8; |
| usample[1] = src[j + 2] >> 0 | src[j + 3] << 8; |
| |
| /* sign extension from 14-bit to signed int */ |
| ssample[0] = se.x = usample[0]; |
| ssample[1] = se.x = usample[1]; |
| |
| /* from signed to unsigned */ |
| usample[0] = ssample[0] + 8192; |
| usample[1] = ssample[1] + 8192; |
| |
| /* from 14-bit to 16-bit */ |
| *u16dst++ = (usample[0] << 2) | (usample[0] >> 12); |
| *u16dst++ = (usample[1] << 2) | (usample[1] >> 12); |
| } |
| |
| src += 1008; |
| dst += 1008; |
| dst_len += 1008; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if (unlikely(time_is_before_jiffies(s->jiffies_next))) { |
| #define MSECS 10000UL |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies_next = jiffies + msecs_to_jiffies(MSECS); |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", |
| src_len, samples, MSECS, |
| samples * 1000UL / MSECS); |
| } |
| |
| /* next sample (sample = sample + i * 252) */ |
| s->next_sample = sample_num[i_max - 1] + 252; |
| |
| 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 msi3101_isoc_handler(struct urb *urb) |
| { |
| struct msi3101_state *s = (struct msi3101_state *)urb->context; |
| int i, flen, fstatus; |
| unsigned char *iso_buf = NULL; |
| struct msi3101_frame_buf *fbuf; |
| |
| if (unlikely(urb->status == -ENOENT || urb->status == -ECONNRESET || |
| urb->status == -ESHUTDOWN)) { |
| dev_dbg(&s->udev->dev, "URB (%p) unlinked %ssynchronuously\n", |
| urb, urb->status == -ENOENT ? "" : "a"); |
| return; |
| } |
| |
| if (unlikely(urb->status != 0)) { |
| dev_dbg(&s->udev->dev, |
| "msi3101_isoc_handler() called with status %d\n", |
| urb->status); |
| /* Give up after a number of contiguous errors */ |
| if (++s->isoc_errors > MAX_ISOC_ERRORS) |
| dev_dbg(&s->udev->dev, |
| "Too many ISOC errors, bailing out\n"); |
| goto handler_end; |
| } else { |
| /* Reset ISOC error counter. We did get here, after all. */ |
| s->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(&s->udev->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 = msi3101_get_next_fill_buf(s); |
| if (unlikely(fbuf == NULL)) { |
| s->vb_full++; |
| dev_dbg_ratelimited(&s->udev->dev, |
| "videobuf is full, %d packets dropped\n", |
| s->vb_full); |
| continue; |
| } |
| |
| /* fill framebuffer */ |
| ptr = vb2_plane_vaddr(&fbuf->vb, 0); |
| flen = s->convert_stream(s, ptr, iso_buf, flen); |
| vb2_set_plane_payload(&fbuf->vb, 0, flen); |
| vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); |
| } |
| |
| handler_end: |
| i = usb_submit_urb(urb, GFP_ATOMIC); |
| if (unlikely(i != 0)) |
| dev_dbg(&s->udev->dev, |
| "Error (%d) re-submitting urb in msi3101_isoc_handler\n", |
| i); |
| } |
| |
| static void msi3101_iso_stop(struct msi3101_state *s) |
| { |
| int i; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| /* Unlinking ISOC buffers one by one */ |
| for (i = 0; i < MAX_ISO_BUFS; i++) { |
| if (s->urbs[i]) { |
| dev_dbg(&s->udev->dev, "Unlinking URB %p\n", |
| s->urbs[i]); |
| usb_kill_urb(s->urbs[i]); |
| } |
| } |
| } |
| |
| static void msi3101_iso_free(struct msi3101_state *s) |
| { |
| int i; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| /* Freeing ISOC buffers one by one */ |
| for (i = 0; i < MAX_ISO_BUFS; i++) { |
| if (s->urbs[i]) { |
| dev_dbg(&s->udev->dev, "Freeing URB\n"); |
| if (s->urbs[i]->transfer_buffer) { |
| usb_free_coherent(s->udev, |
| s->urbs[i]->transfer_buffer_length, |
| s->urbs[i]->transfer_buffer, |
| s->urbs[i]->transfer_dma); |
| } |
| usb_free_urb(s->urbs[i]); |
| s->urbs[i] = NULL; |
| } |
| } |
| } |
| |
| /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ |
| static void msi3101_isoc_cleanup(struct msi3101_state *s) |
| { |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| msi3101_iso_stop(s); |
| msi3101_iso_free(s); |
| } |
| |
| /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ |
| static int msi3101_isoc_init(struct msi3101_state *s) |
| { |
| struct usb_device *udev; |
| struct urb *urb; |
| int i, j, ret; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| s->isoc_errors = 0; |
| udev = s->udev; |
| |
| ret = usb_set_interface(s->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) { |
| dev_err(&s->udev->dev, |
| "Failed to allocate urb %d\n", i); |
| msi3101_isoc_cleanup(s); |
| return -ENOMEM; |
| } |
| s->urbs[i] = urb; |
| dev_dbg(&s->udev->dev, "Allocated URB at 0x%p\n", urb); |
| |
| urb->interval = 1; |
| urb->dev = udev; |
| urb->pipe = usb_rcvisocpipe(udev, 0x81); |
| urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; |
| urb->transfer_buffer = usb_alloc_coherent(udev, ISO_BUFFER_SIZE, |
| GFP_KERNEL, &urb->transfer_dma); |
| if (urb->transfer_buffer == NULL) { |
| dev_err(&s->udev->dev, |
| "Failed to allocate urb buffer %d\n", |
| i); |
| msi3101_isoc_cleanup(s); |
| return -ENOMEM; |
| } |
| urb->transfer_buffer_length = ISO_BUFFER_SIZE; |
| urb->complete = msi3101_isoc_handler; |
| urb->context = s; |
| 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(s->urbs[i], GFP_KERNEL); |
| if (ret) { |
| dev_err(&s->udev->dev, |
| "isoc_init() submit_urb %d failed with error %d\n", |
| i, ret); |
| msi3101_isoc_cleanup(s); |
| return ret; |
| } |
| dev_dbg(&s->udev->dev, "URB 0x%p submitted.\n", s->urbs[i]); |
| } |
| |
| /* All is done... */ |
| return 0; |
| } |
| |
| /* Must be called with vb_queue_lock hold */ |
| static void msi3101_cleanup_queued_bufs(struct msi3101_state *s) |
| { |
| unsigned long flags = 0; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| while (!list_empty(&s->queued_bufs)) { |
| struct msi3101_frame_buf *buf; |
| |
| buf = list_entry(s->queued_bufs.next, struct msi3101_frame_buf, |
| list); |
| list_del(&buf->list); |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| } |
| spin_unlock_irqrestore(&s->queued_bufs_lock, flags); |
| } |
| |
| /* The user yanked out the cable... */ |
| static void msi3101_disconnect(struct usb_interface *intf) |
| { |
| struct v4l2_device *v = usb_get_intfdata(intf); |
| struct msi3101_state *s = |
| container_of(v, struct msi3101_state, v4l2_dev); |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| mutex_lock(&s->vb_queue_lock); |
| mutex_lock(&s->v4l2_lock); |
| /* No need to keep the urbs around after disconnection */ |
| s->udev = NULL; |
| v4l2_device_disconnect(&s->v4l2_dev); |
| video_unregister_device(&s->vdev); |
| spi_unregister_master(s->master); |
| mutex_unlock(&s->v4l2_lock); |
| mutex_unlock(&s->vb_queue_lock); |
| |
| v4l2_device_put(&s->v4l2_dev); |
| } |
| |
| static int msi3101_querycap(struct file *file, void *fh, |
| struct v4l2_capability *cap) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); |
| strlcpy(cap->card, s->vdev.name, sizeof(cap->card)); |
| usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info)); |
| cap->device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | |
| V4L2_CAP_READWRITE | V4L2_CAP_TUNER; |
| cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
| return 0; |
| } |
| |
| /* Videobuf2 operations */ |
| static int msi3101_queue_setup(struct vb2_queue *vq, |
| const struct v4l2_format *fmt, unsigned int *nbuffers, |
| unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vq); |
| dev_dbg(&s->udev->dev, "%s: *nbuffers=%d\n", __func__, *nbuffers); |
| |
| /* Absolute min and max number of buffers available for mmap() */ |
| *nbuffers = clamp_t(unsigned int, *nbuffers, 8, 32); |
| *nplanes = 1; |
| /* |
| * 3, wMaxPacketSize 3x 1024 bytes |
| * 504, max IQ sample pairs per 1024 frame |
| * 2, two samples, I and Q |
| * 2, 16-bit is enough for single sample |
| */ |
| sizes[0] = PAGE_ALIGN(3 * 504 * 2 * 2); |
| dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n", |
| __func__, *nbuffers, sizes[0]); |
| return 0; |
| } |
| |
| static void msi3101_buf_queue(struct vb2_buffer *vb) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); |
| struct msi3101_frame_buf *buf = |
| container_of(vb, struct msi3101_frame_buf, vb); |
| unsigned long flags = 0; |
| |
| /* Check the device has not disconnected between prep and queuing */ |
| if (unlikely(!s->udev)) { |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| return; |
| } |
| |
| spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| list_add_tail(&buf->list, &s->queued_bufs); |
| spin_unlock_irqrestore(&s->queued_bufs_lock, flags); |
| } |
| |
| #define CMD_WREG 0x41 |
| #define CMD_START_STREAMING 0x43 |
| #define CMD_STOP_STREAMING 0x45 |
| #define CMD_READ_UNKNOW 0x48 |
| |
| #define msi3101_dbg_usb_control_msg(udev, r, t, v, _i, b, l) { \ |
| char *direction; \ |
| if (t == (USB_TYPE_VENDOR | USB_DIR_OUT)) \ |
| direction = ">>>"; \ |
| else \ |
| direction = "<<<"; \ |
| dev_dbg(&udev->dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x " \ |
| "%s %*ph\n", __func__, t, r, v & 0xff, v >> 8, \ |
| _i & 0xff, _i >> 8, l & 0xff, l >> 8, direction, l, b); \ |
| } |
| |
| static int msi3101_ctrl_msg(struct msi3101_state *s, 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; |
| |
| msi3101_dbg_usb_control_msg(s->udev, |
| request, requesttype, value, index, NULL, 0); |
| |
| ret = usb_control_msg(s->udev, usb_sndctrlpipe(s->udev, 0), |
| request, requesttype, value, index, NULL, 0, 2000); |
| |
| if (ret) |
| dev_err(&s->udev->dev, "%s: failed %d, cmd %02x, data %04x\n", |
| __func__, ret, cmd, data); |
| |
| return ret; |
| }; |
| |
| #define F_REF 24000000 |
| #define DIV_R_IN 2 |
| static int msi3101_set_usb_adc(struct msi3101_state *s) |
| { |
| int ret, div_n, div_m, div_r_out, f_sr, f_vco, fract; |
| u32 reg3, reg4, reg7; |
| struct v4l2_ctrl *bandwidth_auto; |
| struct v4l2_ctrl *bandwidth; |
| |
| f_sr = s->f_adc; |
| |
| /* set tuner, subdev, filters according to sampling rate */ |
| bandwidth_auto = v4l2_ctrl_find(&s->hdl, V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); |
| if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { |
| bandwidth = v4l2_ctrl_find(&s->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); |
| v4l2_ctrl_s_ctrl(bandwidth, s->f_adc); |
| } |
| |
| /* select stream format */ |
| switch (s->pixelformat) { |
| case V4L2_SDR_FMT_CU8: |
| s->convert_stream = msi3101_convert_stream_504_u8; |
| reg7 = 0x000c9407; |
| break; |
| case V4L2_SDR_FMT_CU16LE: |
| s->convert_stream = msi3101_convert_stream_252_u16; |
| reg7 = 0x00009407; |
| break; |
| case V4L2_PIX_FMT_SDR_S8: |
| s->convert_stream = msi3101_convert_stream_504; |
| reg7 = 0x000c9407; |
| break; |
| case V4L2_PIX_FMT_SDR_MSI2500_384: |
| s->convert_stream = msi3101_convert_stream_384; |
| reg7 = 0x0000a507; |
| break; |
| case V4L2_PIX_FMT_SDR_S12: |
| s->convert_stream = msi3101_convert_stream_336; |
| reg7 = 0x00008507; |
| break; |
| case V4L2_PIX_FMT_SDR_S14: |
| s->convert_stream = msi3101_convert_stream_252; |
| reg7 = 0x00009407; |
| break; |
| default: |
| s->convert_stream = msi3101_convert_stream_504_u8; |
| reg7 = 0x000c9407; |
| break; |
| } |
| |
| /* |
| * 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++ |
| */ |
| reg3 = 0x01000303; |
| reg4 = 0x00000004; |
| |
| /* XXX: Filters? AGC? */ |
| 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_r_out = 4; div_r_out < 16; div_r_out += 2) { |
| f_vco = f_sr * div_r_out * 12; |
| dev_dbg(&s->udev->dev, "%s: div_r_out=%d f_vco=%d\n", |
| __func__, div_r_out, f_vco); |
| if (f_vco >= 202000000) |
| break; |
| } |
| |
| div_n = f_vco / (F_REF * DIV_R_IN); |
| div_m = f_vco % (F_REF * DIV_R_IN); |
| fract = 0x200000ul * div_m / (F_REF * DIV_R_IN); |
| |
| reg3 |= div_n << 16; |
| reg3 |= (div_r_out / 2 - 1) << 10; |
| reg3 |= ((fract >> 20) & 0x000001) << 15; /* [20] */ |
| reg4 |= ((fract >> 0) & 0x0fffff) << 8; /* [19:0] */ |
| |
| dev_dbg(&s->udev->dev, |
| "%s: f_sr=%d f_vco=%d div_n=%d div_m=%d div_r_out=%d reg3=%08x reg4=%08x\n", |
| __func__, f_sr, f_vco, div_n, div_m, div_r_out, reg3, reg4); |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00608008); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00000c05); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00020000); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00480102); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00f38008); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, reg7); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, reg4); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, reg3); |
| if (ret) |
| goto err; |
| err: |
| return ret; |
| }; |
| |
| static int msi3101_start_streaming(struct vb2_queue *vq, unsigned int count) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vq); |
| int ret; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| if (!s->udev) |
| return -ENODEV; |
| |
| if (mutex_lock_interruptible(&s->v4l2_lock)) |
| return -ERESTARTSYS; |
| |
| /* wake-up tuner */ |
| v4l2_subdev_call(s->v4l2_subdev, core, s_power, 1); |
| |
| ret = msi3101_set_usb_adc(s); |
| |
| ret = msi3101_isoc_init(s); |
| if (ret) |
| msi3101_cleanup_queued_bufs(s); |
| |
| ret = msi3101_ctrl_msg(s, CMD_START_STREAMING, 0); |
| |
| mutex_unlock(&s->v4l2_lock); |
| |
| return ret; |
| } |
| |
| static void msi3101_stop_streaming(struct vb2_queue *vq) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vq); |
| |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| mutex_lock(&s->v4l2_lock); |
| |
| if (s->udev) |
| msi3101_isoc_cleanup(s); |
| |
| msi3101_cleanup_queued_bufs(s); |
| |
| /* according to tests, at least 700us delay is required */ |
| msleep(20); |
| if (!msi3101_ctrl_msg(s, CMD_STOP_STREAMING, 0)) { |
| /* sleep USB IF / ADC */ |
| msi3101_ctrl_msg(s, CMD_WREG, 0x01000003); |
| } |
| |
| /* sleep tuner */ |
| v4l2_subdev_call(s->v4l2_subdev, core, s_power, 0); |
| |
| mutex_unlock(&s->v4l2_lock); |
| } |
| |
| static struct vb2_ops msi3101_vb2_ops = { |
| .queue_setup = msi3101_queue_setup, |
| .buf_queue = msi3101_buf_queue, |
| .start_streaming = msi3101_start_streaming, |
| .stop_streaming = msi3101_stop_streaming, |
| .wait_prepare = vb2_ops_wait_prepare, |
| .wait_finish = vb2_ops_wait_finish, |
| }; |
| |
| static int msi3101_enum_fmt_sdr_cap(struct file *file, void *priv, |
| struct v4l2_fmtdesc *f) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, f->index); |
| |
| if (f->index >= NUM_FORMATS) |
| return -EINVAL; |
| |
| strlcpy(f->description, formats[f->index].name, sizeof(f->description)); |
| f->pixelformat = formats[f->index].pixelformat; |
| |
| return 0; |
| } |
| |
| static int msi3101_g_fmt_sdr_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__, |
| (char *)&s->pixelformat); |
| |
| memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); |
| f->fmt.sdr.pixelformat = s->pixelformat; |
| |
| return 0; |
| } |
| |
| static int msi3101_s_fmt_sdr_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| struct vb2_queue *q = &s->vb_queue; |
| int i; |
| dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__, |
| (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 < NUM_FORMATS; i++) { |
| if (formats[i].pixelformat == f->fmt.sdr.pixelformat) { |
| s->pixelformat = f->fmt.sdr.pixelformat; |
| return 0; |
| } |
| } |
| |
| f->fmt.sdr.pixelformat = formats[0].pixelformat; |
| s->pixelformat = formats[0].pixelformat; |
| |
| return 0; |
| } |
| |
| static int msi3101_try_fmt_sdr_cap(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| int i; |
| dev_dbg(&s->udev->dev, "%s: pixelformat fourcc %4.4s\n", __func__, |
| (char *)&f->fmt.sdr.pixelformat); |
| |
| memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); |
| for (i = 0; i < NUM_FORMATS; i++) { |
| if (formats[i].pixelformat == f->fmt.sdr.pixelformat) |
| return 0; |
| } |
| |
| f->fmt.sdr.pixelformat = formats[0].pixelformat; |
| |
| return 0; |
| } |
| |
| static int msi3101_s_tuner(struct file *file, void *priv, |
| const struct v4l2_tuner *v) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| int ret; |
| dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, v->index); |
| |
| if (v->index == 0) |
| ret = 0; |
| else if (v->index == 1) |
| ret = v4l2_subdev_call(s->v4l2_subdev, tuner, s_tuner, v); |
| else |
| ret = -EINVAL; |
| |
| return ret; |
| } |
| |
| static int msi3101_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| int ret; |
| dev_dbg(&s->udev->dev, "%s: index=%d\n", __func__, v->index); |
| |
| if (v->index == 0) { |
| strlcpy(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(s->v4l2_subdev, tuner, g_tuner, v); |
| } else { |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static int msi3101_g_frequency(struct file *file, void *priv, |
| struct v4l2_frequency *f) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| int ret = 0; |
| dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d\n", |
| __func__, f->tuner, f->type); |
| |
| if (f->tuner == 0) { |
| f->frequency = s->f_adc; |
| ret = 0; |
| } else if (f->tuner == 1) { |
| f->type = V4L2_TUNER_RF; |
| ret = v4l2_subdev_call(s->v4l2_subdev, tuner, g_frequency, f); |
| } else { |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static int msi3101_s_frequency(struct file *file, void *priv, |
| const struct v4l2_frequency *f) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| int ret; |
| dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d frequency=%u\n", |
| __func__, f->tuner, f->type, f->frequency); |
| |
| if (f->tuner == 0) { |
| s->f_adc = clamp_t(unsigned int, f->frequency, |
| bands[0].rangelow, |
| bands[0].rangehigh); |
| dev_dbg(&s->udev->dev, "%s: ADC frequency=%u Hz\n", |
| __func__, s->f_adc); |
| ret = msi3101_set_usb_adc(s); |
| } else if (f->tuner == 1) { |
| ret = v4l2_subdev_call(s->v4l2_subdev, tuner, s_frequency, f); |
| } else { |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static int msi3101_enum_freq_bands(struct file *file, void *priv, |
| struct v4l2_frequency_band *band) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| int ret; |
| dev_dbg(&s->udev->dev, "%s: tuner=%d type=%d index=%d\n", |
| __func__, 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(s->v4l2_subdev, tuner, |
| enum_freq_bands, band); |
| } else { |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static const struct v4l2_ioctl_ops msi3101_ioctl_ops = { |
| .vidioc_querycap = msi3101_querycap, |
| |
| .vidioc_enum_fmt_sdr_cap = msi3101_enum_fmt_sdr_cap, |
| .vidioc_g_fmt_sdr_cap = msi3101_g_fmt_sdr_cap, |
| .vidioc_s_fmt_sdr_cap = msi3101_s_fmt_sdr_cap, |
| .vidioc_try_fmt_sdr_cap = msi3101_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 = msi3101_g_tuner, |
| .vidioc_s_tuner = msi3101_s_tuner, |
| |
| .vidioc_g_frequency = msi3101_g_frequency, |
| .vidioc_s_frequency = msi3101_s_frequency, |
| .vidioc_enum_freq_bands = msi3101_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 msi3101_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 struct video_device msi3101_template = { |
| .name = "Mirics MSi3101 SDR Dongle", |
| .release = video_device_release_empty, |
| .fops = &msi3101_fops, |
| .ioctl_ops = &msi3101_ioctl_ops, |
| }; |
| |
| static void msi3101_video_release(struct v4l2_device *v) |
| { |
| struct msi3101_state *s = |
| container_of(v, struct msi3101_state, v4l2_dev); |
| |
| v4l2_ctrl_handler_free(&s->hdl); |
| v4l2_device_unregister(&s->v4l2_dev); |
| kfree(s); |
| } |
| |
| static int msi3101_transfer_one_message(struct spi_master *master, |
| struct spi_message *m) |
| { |
| struct msi3101_state *s = 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(&s->udev->dev, "%s: msg=%*ph\n", |
| __func__, 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 = msi3101_ctrl_msg(s, CMD_WREG, data); |
| } |
| |
| m->status = ret; |
| spi_finalize_current_message(master); |
| return ret; |
| } |
| |
| static int msi3101_probe(struct usb_interface *intf, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *udev = interface_to_usbdev(intf); |
| struct msi3101_state *s = NULL; |
| 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, |
| }; |
| |
| s = kzalloc(sizeof(struct msi3101_state), GFP_KERNEL); |
| if (s == NULL) { |
| pr_err("Could not allocate memory for msi3101_state\n"); |
| return -ENOMEM; |
| } |
| |
| mutex_init(&s->v4l2_lock); |
| mutex_init(&s->vb_queue_lock); |
| spin_lock_init(&s->queued_bufs_lock); |
| INIT_LIST_HEAD(&s->queued_bufs); |
| s->udev = udev; |
| s->f_adc = bands[0].rangelow; |
| s->pixelformat = V4L2_SDR_FMT_CU8; |
| |
| /* Init videobuf2 queue structure */ |
| s->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE; |
| s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; |
| s->vb_queue.drv_priv = s; |
| s->vb_queue.buf_struct_size = sizeof(struct msi3101_frame_buf); |
| s->vb_queue.ops = &msi3101_vb2_ops; |
| s->vb_queue.mem_ops = &vb2_vmalloc_memops; |
| s->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| ret = vb2_queue_init(&s->vb_queue); |
| if (ret) { |
| dev_err(&s->udev->dev, "Could not initialize vb2 queue\n"); |
| goto err_free_mem; |
| } |
| |
| /* Init video_device structure */ |
| s->vdev = msi3101_template; |
| s->vdev.queue = &s->vb_queue; |
| s->vdev.queue->lock = &s->vb_queue_lock; |
| video_set_drvdata(&s->vdev, s); |
| |
| /* Register the v4l2_device structure */ |
| s->v4l2_dev.release = msi3101_video_release; |
| ret = v4l2_device_register(&intf->dev, &s->v4l2_dev); |
| if (ret) { |
| dev_err(&s->udev->dev, |
| "Failed to register v4l2-device (%d)\n", ret); |
| goto err_free_mem; |
| } |
| |
| /* SPI master adapter */ |
| master = spi_alloc_master(&s->udev->dev, 0); |
| if (master == NULL) { |
| ret = -ENOMEM; |
| goto err_unregister_v4l2_dev; |
| } |
| |
| s->master = master; |
| master->bus_num = 0; |
| master->num_chipselect = 1; |
| master->transfer_one_message = msi3101_transfer_one_message; |
| spi_master_set_devdata(master, s); |
| ret = spi_register_master(master); |
| if (ret) { |
| spi_master_put(master); |
| goto err_unregister_v4l2_dev; |
| } |
| |
| /* load v4l2 subdevice */ |
| sd = v4l2_spi_new_subdev(&s->v4l2_dev, master, &board_info); |
| s->v4l2_subdev = sd; |
| if (sd == NULL) { |
| dev_err(&s->udev->dev, "cannot get v4l2 subdevice\n"); |
| ret = -ENODEV; |
| goto err_unregister_master; |
| } |
| |
| /* Register controls */ |
| v4l2_ctrl_handler_init(&s->hdl, 0); |
| if (s->hdl.error) { |
| ret = s->hdl.error; |
| dev_err(&s->udev->dev, "Could not initialize controls\n"); |
| goto err_free_controls; |
| } |
| |
| /* currently all controls are from subdev */ |
| v4l2_ctrl_add_handler(&s->hdl, sd->ctrl_handler, NULL); |
| |
| s->v4l2_dev.ctrl_handler = &s->hdl; |
| s->vdev.v4l2_dev = &s->v4l2_dev; |
| s->vdev.lock = &s->v4l2_lock; |
| |
| ret = video_register_device(&s->vdev, VFL_TYPE_SDR, -1); |
| if (ret) { |
| dev_err(&s->udev->dev, |
| "Failed to register as video device (%d)\n", |
| ret); |
| goto err_unregister_v4l2_dev; |
| } |
| dev_info(&s->udev->dev, "Registered as %s\n", |
| video_device_node_name(&s->vdev)); |
| |
| return 0; |
| |
| err_free_controls: |
| v4l2_ctrl_handler_free(&s->hdl); |
| err_unregister_master: |
| spi_unregister_master(s->master); |
| err_unregister_v4l2_dev: |
| v4l2_device_unregister(&s->v4l2_dev); |
| err_free_mem: |
| kfree(s); |
| return ret; |
| } |
| |
| /* USB device ID list */ |
| static struct usb_device_id msi3101_id_table[] = { |
| { USB_DEVICE(0x1df7, 0x2500) }, /* Mirics MSi3101 SDR Dongle */ |
| { USB_DEVICE(0x2040, 0xd300) }, /* Hauppauge WinTV 133559 LF */ |
| { } |
| }; |
| MODULE_DEVICE_TABLE(usb, msi3101_id_table); |
| |
| /* USB subsystem interface */ |
| static struct usb_driver msi3101_driver = { |
| .name = KBUILD_MODNAME, |
| .probe = msi3101_probe, |
| .disconnect = msi3101_disconnect, |
| .id_table = msi3101_id_table, |
| }; |
| |
| module_usb_driver(msi3101_driver); |
| |
| MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
| MODULE_DESCRIPTION("Mirics MSi3101 SDR Dongle"); |
| MODULE_LICENSE("GPL"); |