| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Antti Palosaari | 7876 | 91.86% | 16 | 40.00% |
| Peter Rosin | 507 | 5.91% | 2 | 5.00% |
| Hans Verkuil | 102 | 1.19% | 7 | 17.50% |
| Junghak Sung | 29 | 0.34% | 3 | 7.50% |
| Dan Carpenter | 22 | 0.26% | 1 | 2.50% |
| Lin Yi | 17 | 0.20% | 1 | 2.50% |
| Mauro Carvalho Chehab | 6 | 0.07% | 3 | 7.50% |
| Evgeny Novikov | 5 | 0.06% | 1 | 2.50% |
| Jia-Ju Bai | 3 | 0.03% | 1 | 2.50% |
| Uwe Kleine-König | 2 | 0.02% | 1 | 2.50% |
| Pawel Osciak | 2 | 0.02% | 1 | 2.50% |
| Alexander A. Klimov | 1 | 0.01% | 1 | 2.50% |
| Bhumika Goyal | 1 | 0.01% | 1 | 2.50% |
| Thomas Gleixner | 1 | 0.01% | 1 | 2.50% |
| Total | 8574 | 40 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * Realtek RTL2832U SDR driver * * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> * * GNU Radio plugin "gr-kernel" for device usage will be on: * https://git.linuxtv.org/anttip/gr-kernel.git */ #include "rtl2832_sdr.h" #include "dvb_usb.h" #include <media/v4l2-device.h> #include <media/v4l2-ioctl.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-event.h> #include <media/videobuf2-v4l2.h> #include <media/videobuf2-vmalloc.h> #include <linux/platform_device.h> #include <linux/jiffies.h> #include <linux/math64.h> #include <linux/regmap.h> static bool rtl2832_sdr_emulated_fmt; module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644); MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)"); /* Original macro does not contain enough null pointer checks for our need */ #define V4L2_SUBDEV_HAS_OP(sd, o, f) \ ((sd) && (sd)->ops && (sd)->ops->o && (sd)->ops->o->f) #define MAX_BULK_BUFS (10) #define BULK_BUFFER_SIZE (128 * 512) static const struct v4l2_frequency_band bands_adc[] = { { .tuner = 0, .type = V4L2_TUNER_ADC, .index = 0, .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, .rangelow = 300000, .rangehigh = 300000, }, { .tuner = 0, .type = V4L2_TUNER_ADC, .index = 1, .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, .rangelow = 900001, .rangehigh = 2800000, }, { .tuner = 0, .type = V4L2_TUNER_ADC, .index = 2, .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, .rangelow = 3200000, .rangehigh = 3200000, }, }; static const struct v4l2_frequency_band bands_fm[] = { { .tuner = 1, .type = V4L2_TUNER_RF, .index = 0, .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS, .rangelow = 50000000, .rangehigh = 2000000000, }, }; /* stream formats */ struct rtl2832_sdr_format { char *name; u32 pixelformat; u32 buffersize; }; static struct rtl2832_sdr_format formats[] = { { .pixelformat = V4L2_SDR_FMT_CU8, .buffersize = BULK_BUFFER_SIZE, }, { .pixelformat = V4L2_SDR_FMT_CU16LE, .buffersize = BULK_BUFFER_SIZE * 2, }, }; static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats); /* intermediate buffers with raw data from the USB device */ struct rtl2832_sdr_frame_buf { /* common v4l buffer stuff -- must be first */ struct vb2_v4l2_buffer vb; struct list_head list; }; struct rtl2832_sdr_dev { #define POWER_ON 0 /* BIT(0) */ #define URB_BUF 1 /* BIT(1) */ unsigned long flags; struct platform_device *pdev; struct regmap *regmap; struct video_device vdev; struct v4l2_device v4l2_dev; struct v4l2_subdev *v4l2_subdev; /* videobuf2 queue and queued buffers list */ struct vb2_queue vb_queue; struct list_head queued_bufs; spinlock_t queued_bufs_lock; /* Protects queued_bufs */ unsigned sequence; /* buffer sequence counter */ /* 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 vb_full; /* vb is full and packets dropped */ struct urb *urb_list[MAX_BULK_BUFS]; int buf_num; unsigned long buf_size; u8 *buf_list[MAX_BULK_BUFS]; dma_addr_t dma_addr[MAX_BULK_BUFS]; int urbs_initialized; int urbs_submitted; unsigned int f_adc, f_tuner; u32 pixelformat; u32 buffersize; unsigned int num_formats; /* Controls */ struct v4l2_ctrl_handler hdl; struct v4l2_ctrl *bandwidth_auto; struct v4l2_ctrl *bandwidth; /* for sample rate calc */ unsigned int sample; unsigned int sample_measured; unsigned long jiffies_next; }; /* Private functions */ static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf( struct rtl2832_sdr_dev *dev) { unsigned long flags; struct rtl2832_sdr_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 rtl2832_sdr_frame_buf, list); list_del(&buf->list); leave: spin_unlock_irqrestore(&dev->queued_bufs_lock, flags); return buf; } static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev, void *dst, const u8 *src, unsigned int src_len) { struct platform_device *pdev = dev->pdev; unsigned int dst_len; if (dev->pixelformat == V4L2_SDR_FMT_CU8) { /* native stream, no need to convert */ memcpy(dst, src, src_len); dst_len = src_len; } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) { /* convert u8 to u16 */ unsigned int i; u16 *u16dst = dst; for (i = 0; i < src_len; i++) *u16dst++ = (src[i] << 8) | (src[i] >> 0); dst_len = 2 * src_len; } else { dst_len = 0; } /* 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->sample - dev->sample_measured; dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS); dev->sample_measured = dev->sample; dev_dbg(&pdev->dev, "slen=%u samples=%u msecs=%u sample rate=%lu\n", src_len, samples, msecs, samples * 1000UL / msecs); } /* total number of I+Q pairs */ dev->sample += src_len / 2; return dst_len; } /* * This gets called for the bulk stream pipe. This is done in interrupt * time, so it has to be fast, not crash, and not stall. Neat. */ static void rtl2832_sdr_urb_complete(struct urb *urb) { struct rtl2832_sdr_dev *dev = urb->context; struct platform_device *pdev = dev->pdev; struct rtl2832_sdr_frame_buf *fbuf; dev_dbg_ratelimited(&pdev->dev, "status=%d length=%d/%d errors=%d\n", urb->status, urb->actual_length, urb->transfer_buffer_length, urb->error_count); switch (urb->status) { case 0: /* success */ case -ETIMEDOUT: /* NAK */ break; case -ECONNRESET: /* kill */ case -ENOENT: case -ESHUTDOWN: return; default: /* error */ dev_err_ratelimited(&pdev->dev, "urb failed=%d\n", urb->status); break; } if (likely(urb->actual_length > 0)) { void *ptr; unsigned int len; /* get free framebuffer */ fbuf = rtl2832_sdr_get_next_fill_buf(dev); if (unlikely(fbuf == NULL)) { dev->vb_full++; dev_notice_ratelimited(&pdev->dev, "video buffer is full, %d packets dropped\n", dev->vb_full); goto skip; } /* fill framebuffer */ ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0); len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer, urb->actual_length); vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, len); fbuf->vb.vb2_buf.timestamp = ktime_get_ns(); fbuf->vb.sequence = dev->sequence++; vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE); } skip: usb_submit_urb(urb, GFP_ATOMIC); } static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; int i; for (i = dev->urbs_submitted - 1; i >= 0; i--) { dev_dbg(&pdev->dev, "kill urb=%d\n", i); /* stop the URB */ usb_kill_urb(dev->urb_list[i]); } dev->urbs_submitted = 0; return 0; } static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; int i, ret; for (i = 0; i < dev->urbs_initialized; i++) { dev_dbg(&pdev->dev, "submit urb=%d\n", i); ret = usb_submit_urb(dev->urb_list[i], GFP_KERNEL); if (ret) { dev_err(&pdev->dev, "Could not submit urb no. %d - get them all back\n", i); rtl2832_sdr_kill_urbs(dev); return ret; } dev->urbs_submitted++; } return 0; } static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; if (test_bit(URB_BUF, &dev->flags)) { while (dev->buf_num) { dev->buf_num--; dev_dbg(&pdev->dev, "free buf=%d\n", dev->buf_num); usb_free_coherent(dev->udev, dev->buf_size, dev->buf_list[dev->buf_num], dev->dma_addr[dev->buf_num]); } } clear_bit(URB_BUF, &dev->flags); return 0; } static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; dev->buf_num = 0; dev->buf_size = BULK_BUFFER_SIZE; dev_dbg(&pdev->dev, "all in all I will use %u bytes for streaming\n", MAX_BULK_BUFS * BULK_BUFFER_SIZE); for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) { dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev, BULK_BUFFER_SIZE, GFP_KERNEL, &dev->dma_addr[dev->buf_num]); if (!dev->buf_list[dev->buf_num]) { dev_dbg(&pdev->dev, "alloc buf=%d failed\n", dev->buf_num); rtl2832_sdr_free_stream_bufs(dev); return -ENOMEM; } dev_dbg(&pdev->dev, "alloc buf=%d %p (dma %llu)\n", dev->buf_num, dev->buf_list[dev->buf_num], (long long)dev->dma_addr[dev->buf_num]); set_bit(URB_BUF, &dev->flags); } return 0; } static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; int i; rtl2832_sdr_kill_urbs(dev); for (i = dev->urbs_initialized - 1; i >= 0; i--) { if (dev->urb_list[i]) { dev_dbg(&pdev->dev, "free urb=%d\n", i); /* free the URBs */ usb_free_urb(dev->urb_list[i]); } } dev->urbs_initialized = 0; return 0; } static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; int i, j; /* allocate the URBs */ for (i = 0; i < MAX_BULK_BUFS; i++) { dev_dbg(&pdev->dev, "alloc urb=%d\n", i); dev->urb_list[i] = usb_alloc_urb(0, GFP_KERNEL); if (!dev->urb_list[i]) { for (j = 0; j < i; j++) { usb_free_urb(dev->urb_list[j]); dev->urb_list[j] = NULL; } dev->urbs_initialized = 0; return -ENOMEM; } usb_fill_bulk_urb(dev->urb_list[i], dev->udev, usb_rcvbulkpipe(dev->udev, 0x81), dev->buf_list[i], BULK_BUFFER_SIZE, rtl2832_sdr_urb_complete, dev); dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; dev->urb_list[i]->transfer_dma = dev->dma_addr[i]; dev->urbs_initialized++; } return 0; } /* Must be called with vb_queue_lock hold */ static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; unsigned long flags; dev_dbg(&pdev->dev, "\n"); spin_lock_irqsave(&dev->queued_bufs_lock, flags); while (!list_empty(&dev->queued_bufs)) { struct rtl2832_sdr_frame_buf *buf; buf = list_entry(dev->queued_bufs.next, struct rtl2832_sdr_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); } static int rtl2832_sdr_querycap(struct file *file, void *fh, struct v4l2_capability *cap) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; dev_dbg(&pdev->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 rtl2832_sdr_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); struct platform_device *pdev = dev->pdev; dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers); /* Need at least 8 buffers */ if (vq->num_buffers + *nbuffers < 8) *nbuffers = 8 - vq->num_buffers; *nplanes = 1; sizes[0] = PAGE_ALIGN(dev->buffersize); dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]); return 0; } static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb) { struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); /* Don't allow queueing new buffers after device disconnection */ if (!dev->udev) return -ENODEV; return 0; } static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue); struct rtl2832_sdr_frame_buf *buf = container_of(vbuf, struct rtl2832_sdr_frame_buf, vb); unsigned long flags; /* Check the device has not disconnected between prep and queuing */ if (!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); } static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; struct dvb_frontend *fe = pdata->dvb_frontend; int ret; unsigned int f_sr, f_if; u8 buf[4], u8tmp1, u8tmp2; u64 u64tmp; u32 u32tmp; dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc); if (!test_bit(POWER_ON, &dev->flags)) return 0; if (dev->f_adc == 0) return 0; f_sr = dev->f_adc; ret = regmap_bulk_write(dev->regmap, 0x13e, "\x00\x00", 2); if (ret) goto err; ret = regmap_bulk_write(dev->regmap, 0x115, "\x00\x00\x00\x00", 4); if (ret) goto err; /* get IF from tuner */ if (fe->ops.tuner_ops.get_if_frequency) ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if); else ret = -EINVAL; if (ret) goto err; /* program IF */ u64tmp = f_if % pdata->clk; u64tmp *= 0x400000; u64tmp = div_u64(u64tmp, pdata->clk); u64tmp = -u64tmp; u32tmp = u64tmp & 0x3fffff; dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp); buf[0] = (u32tmp >> 16) & 0xff; buf[1] = (u32tmp >> 8) & 0xff; buf[2] = (u32tmp >> 0) & 0xff; ret = regmap_bulk_write(dev->regmap, 0x119, buf, 3); if (ret) goto err; /* BB / IF mode */ /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */ if (f_if) { u8tmp1 = 0x1a; /* disable Zero-IF */ u8tmp2 = 0x8d; /* enable ADC I */ } else { u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */ u8tmp2 = 0xcd; /* enable ADC I, ADC Q */ } ret = regmap_write(dev->regmap, 0x1b1, u8tmp1); if (ret) goto err; ret = regmap_write(dev->regmap, 0x008, u8tmp2); if (ret) goto err; ret = regmap_write(dev->regmap, 0x006, 0x80); if (ret) goto err; /* program sampling rate (resampling down) */ u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U); u32tmp <<= 2; buf[0] = (u32tmp >> 24) & 0xff; buf[1] = (u32tmp >> 16) & 0xff; buf[2] = (u32tmp >> 8) & 0xff; buf[3] = (u32tmp >> 0) & 0xff; ret = regmap_bulk_write(dev->regmap, 0x19f, buf, 4); if (ret) goto err; /* low-pass filter */ ret = regmap_bulk_write(dev->regmap, 0x11c, "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5", 20); if (ret) goto err; ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); if (ret) goto err; /* mode */ ret = regmap_write(dev->regmap, 0x019, 0x05); if (ret) goto err; ret = regmap_bulk_write(dev->regmap, 0x01a, "\x1b\x16\x0d\x06\x01\xff", 6); if (ret) goto err; /* FSM */ ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\xf0\x0f", 3); if (ret) goto err; /* PID filter */ ret = regmap_write(dev->regmap, 0x061, 0x60); if (ret) goto err; /* used RF tuner based settings */ switch (pdata->tuner) { case RTL2832_SDR_TUNER_E4000: ret = regmap_write(dev->regmap, 0x112, 0x5a); ret = regmap_write(dev->regmap, 0x102, 0x40); ret = regmap_write(dev->regmap, 0x103, 0x5a); ret = regmap_write(dev->regmap, 0x1c7, 0x30); ret = regmap_write(dev->regmap, 0x104, 0xd0); ret = regmap_write(dev->regmap, 0x105, 0xbe); ret = regmap_write(dev->regmap, 0x1c8, 0x18); ret = regmap_write(dev->regmap, 0x106, 0x35); ret = regmap_write(dev->regmap, 0x1c9, 0x21); ret = regmap_write(dev->regmap, 0x1ca, 0x21); ret = regmap_write(dev->regmap, 0x1cb, 0x00); ret = regmap_write(dev->regmap, 0x107, 0x40); ret = regmap_write(dev->regmap, 0x1cd, 0x10); ret = regmap_write(dev->regmap, 0x1ce, 0x10); ret = regmap_write(dev->regmap, 0x108, 0x80); ret = regmap_write(dev->regmap, 0x109, 0x7f); ret = regmap_write(dev->regmap, 0x10a, 0x80); ret = regmap_write(dev->regmap, 0x10b, 0x7f); ret = regmap_write(dev->regmap, 0x00e, 0xfc); ret = regmap_write(dev->regmap, 0x00e, 0xfc); ret = regmap_write(dev->regmap, 0x011, 0xd4); ret = regmap_write(dev->regmap, 0x1e5, 0xf0); ret = regmap_write(dev->regmap, 0x1d9, 0x00); ret = regmap_write(dev->regmap, 0x1db, 0x00); ret = regmap_write(dev->regmap, 0x1dd, 0x14); ret = regmap_write(dev->regmap, 0x1de, 0xec); ret = regmap_write(dev->regmap, 0x1d8, 0x0c); ret = regmap_write(dev->regmap, 0x1e6, 0x02); ret = regmap_write(dev->regmap, 0x1d7, 0x09); ret = regmap_write(dev->regmap, 0x00d, 0x83); ret = regmap_write(dev->regmap, 0x010, 0x49); ret = regmap_write(dev->regmap, 0x00d, 0x87); ret = regmap_write(dev->regmap, 0x00d, 0x85); ret = regmap_write(dev->regmap, 0x013, 0x02); break; case RTL2832_SDR_TUNER_FC0012: case RTL2832_SDR_TUNER_FC0013: ret = regmap_write(dev->regmap, 0x112, 0x5a); ret = regmap_write(dev->regmap, 0x102, 0x40); ret = regmap_write(dev->regmap, 0x103, 0x5a); ret = regmap_write(dev->regmap, 0x1c7, 0x2c); ret = regmap_write(dev->regmap, 0x104, 0xcc); ret = regmap_write(dev->regmap, 0x105, 0xbe); ret = regmap_write(dev->regmap, 0x1c8, 0x16); ret = regmap_write(dev->regmap, 0x106, 0x35); ret = regmap_write(dev->regmap, 0x1c9, 0x21); ret = regmap_write(dev->regmap, 0x1ca, 0x21); ret = regmap_write(dev->regmap, 0x1cb, 0x00); ret = regmap_write(dev->regmap, 0x107, 0x40); ret = regmap_write(dev->regmap, 0x1cd, 0x10); ret = regmap_write(dev->regmap, 0x1ce, 0x10); ret = regmap_write(dev->regmap, 0x108, 0x80); ret = regmap_write(dev->regmap, 0x109, 0x7f); ret = regmap_write(dev->regmap, 0x10a, 0x80); ret = regmap_write(dev->regmap, 0x10b, 0x7f); ret = regmap_write(dev->regmap, 0x00e, 0xfc); ret = regmap_write(dev->regmap, 0x00e, 0xfc); ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xbf", 2); ret = regmap_write(dev->regmap, 0x1e5, 0xf0); ret = regmap_write(dev->regmap, 0x1d9, 0x00); ret = regmap_write(dev->regmap, 0x1db, 0x00); ret = regmap_write(dev->regmap, 0x1dd, 0x11); ret = regmap_write(dev->regmap, 0x1de, 0xef); ret = regmap_write(dev->regmap, 0x1d8, 0x0c); ret = regmap_write(dev->regmap, 0x1e6, 0x02); ret = regmap_write(dev->regmap, 0x1d7, 0x09); break; case RTL2832_SDR_TUNER_R820T: case RTL2832_SDR_TUNER_R828D: ret = regmap_write(dev->regmap, 0x112, 0x5a); ret = regmap_write(dev->regmap, 0x102, 0x40); ret = regmap_write(dev->regmap, 0x115, 0x01); ret = regmap_write(dev->regmap, 0x103, 0x80); ret = regmap_write(dev->regmap, 0x1c7, 0x24); ret = regmap_write(dev->regmap, 0x104, 0xcc); ret = regmap_write(dev->regmap, 0x105, 0xbe); ret = regmap_write(dev->regmap, 0x1c8, 0x14); ret = regmap_write(dev->regmap, 0x106, 0x35); ret = regmap_write(dev->regmap, 0x1c9, 0x21); ret = regmap_write(dev->regmap, 0x1ca, 0x21); ret = regmap_write(dev->regmap, 0x1cb, 0x00); ret = regmap_write(dev->regmap, 0x107, 0x40); ret = regmap_write(dev->regmap, 0x1cd, 0x10); ret = regmap_write(dev->regmap, 0x1ce, 0x10); ret = regmap_write(dev->regmap, 0x108, 0x80); ret = regmap_write(dev->regmap, 0x109, 0x7f); ret = regmap_write(dev->regmap, 0x10a, 0x80); ret = regmap_write(dev->regmap, 0x10b, 0x7f); ret = regmap_write(dev->regmap, 0x00e, 0xfc); ret = regmap_write(dev->regmap, 0x00e, 0xfc); ret = regmap_write(dev->regmap, 0x011, 0xf4); break; case RTL2832_SDR_TUNER_FC2580: ret = regmap_write(dev->regmap, 0x112, 0x39); ret = regmap_write(dev->regmap, 0x102, 0x40); ret = regmap_write(dev->regmap, 0x103, 0x5a); ret = regmap_write(dev->regmap, 0x1c7, 0x2c); ret = regmap_write(dev->regmap, 0x104, 0xcc); ret = regmap_write(dev->regmap, 0x105, 0xbe); ret = regmap_write(dev->regmap, 0x1c8, 0x16); ret = regmap_write(dev->regmap, 0x106, 0x35); ret = regmap_write(dev->regmap, 0x1c9, 0x21); ret = regmap_write(dev->regmap, 0x1ca, 0x21); ret = regmap_write(dev->regmap, 0x1cb, 0x00); ret = regmap_write(dev->regmap, 0x107, 0x40); ret = regmap_write(dev->regmap, 0x1cd, 0x10); ret = regmap_write(dev->regmap, 0x1ce, 0x10); ret = regmap_write(dev->regmap, 0x108, 0x80); ret = regmap_write(dev->regmap, 0x109, 0x7f); ret = regmap_write(dev->regmap, 0x10a, 0x9c); ret = regmap_write(dev->regmap, 0x10b, 0x7f); ret = regmap_write(dev->regmap, 0x00e, 0xfc); ret = regmap_write(dev->regmap, 0x00e, 0xfc); ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xf4", 2); break; default: dev_notice(&pdev->dev, "Unsupported tuner\n"); } /* software reset */ ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x04); if (ret) goto err; ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x00); if (ret) goto err; err: return ret; }; static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; int ret; dev_dbg(&pdev->dev, "\n"); /* PID filter */ ret = regmap_write(dev->regmap, 0x061, 0xe0); if (ret) goto err; /* mode */ ret = regmap_write(dev->regmap, 0x019, 0x20); if (ret) goto err; ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2); if (ret) goto err; /* FSM */ ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\x0f\xff", 3); if (ret) goto err; ret = regmap_bulk_write(dev->regmap, 0x13e, "\x40\x00", 2); if (ret) goto err; ret = regmap_bulk_write(dev->regmap, 0x115, "\x06\x3f\xce\xcc", 4); if (ret) goto err; err: return; }; static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; struct dvb_frontend *fe = pdata->dvb_frontend; struct dtv_frontend_properties *c = &fe->dtv_property_cache; struct v4l2_ctrl *bandwidth_auto; struct v4l2_ctrl *bandwidth; /* * tuner RF (Hz) */ if (dev->f_tuner == 0) return 0; /* * bandwidth (Hz) */ bandwidth_auto = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH_AUTO); bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH); if (v4l2_ctrl_g_ctrl(bandwidth_auto)) { c->bandwidth_hz = dev->f_adc; v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc); } else { c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth); } c->frequency = dev->f_tuner; c->delivery_system = SYS_DVBT; dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n", c->frequency, c->bandwidth_hz); if (!test_bit(POWER_ON, &dev->flags)) return 0; if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { if (fe->ops.tuner_ops.set_params) fe->ops.tuner_ops.set_params(fe); } return 0; }; static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; struct dvb_frontend *fe = pdata->dvb_frontend; dev_dbg(&pdev->dev, "\n"); if (fe->ops.tuner_ops.init) fe->ops.tuner_ops.init(fe); return 0; }; static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev) { struct platform_device *pdev = dev->pdev; struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; struct dvb_frontend *fe = pdata->dvb_frontend; dev_dbg(&pdev->dev, "\n"); if (fe->ops.tuner_ops.sleep) fe->ops.tuner_ops.sleep(fe); return; }; static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count) { struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); struct platform_device *pdev = dev->pdev; struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; struct dvb_usb_device *d = pdata->dvb_usb_device; int ret; dev_dbg(&pdev->dev, "\n"); if (!dev->udev) return -ENODEV; if (mutex_lock_interruptible(&dev->v4l2_lock)) return -ERESTARTSYS; if (d->props->power_ctrl) d->props->power_ctrl(d, 1); /* enable ADC */ if (d->props->frontend_ctrl) d->props->frontend_ctrl(pdata->dvb_frontend, 1); set_bit(POWER_ON, &dev->flags); /* wake-up tuner */ if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1); else ret = rtl2832_sdr_set_tuner(dev); if (ret) goto err; ret = rtl2832_sdr_set_tuner_freq(dev); if (ret) goto err; ret = rtl2832_sdr_set_adc(dev); if (ret) goto err; ret = rtl2832_sdr_alloc_stream_bufs(dev); if (ret) goto err; ret = rtl2832_sdr_alloc_urbs(dev); if (ret) goto err; dev->sequence = 0; ret = rtl2832_sdr_submit_urbs(dev); if (ret) goto err; err: mutex_unlock(&dev->v4l2_lock); return ret; } static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq) { struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq); struct platform_device *pdev = dev->pdev; struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; struct dvb_usb_device *d = pdata->dvb_usb_device; dev_dbg(&pdev->dev, "\n"); mutex_lock(&dev->v4l2_lock); rtl2832_sdr_kill_urbs(dev); rtl2832_sdr_free_urbs(dev); rtl2832_sdr_free_stream_bufs(dev); rtl2832_sdr_cleanup_queued_bufs(dev); rtl2832_sdr_unset_adc(dev); /* sleep tuner */ if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power)) v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0); else rtl2832_sdr_unset_tuner(dev); clear_bit(POWER_ON, &dev->flags); /* disable ADC */ if (d->props->frontend_ctrl) d->props->frontend_ctrl(pdata->dvb_frontend, 0); if (d->props->power_ctrl) d->props->power_ctrl(d, 0); mutex_unlock(&dev->v4l2_lock); } static const struct vb2_ops rtl2832_sdr_vb2_ops = { .queue_setup = rtl2832_sdr_queue_setup, .buf_prepare = rtl2832_sdr_buf_prepare, .buf_queue = rtl2832_sdr_buf_queue, .start_streaming = rtl2832_sdr_start_streaming, .stop_streaming = rtl2832_sdr_stop_streaming, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, }; static int rtl2832_sdr_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; int ret; dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type); if (v->index == 0) { strscpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name)); v->type = V4L2_TUNER_ADC; v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; v->rangelow = 300000; v->rangehigh = 3200000; ret = 0; } else if (v->index == 1 && V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) { ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v); } else if (v->index == 1) { strscpy(v->name, "RF: <unknown>", sizeof(v->name)); v->type = V4L2_TUNER_RF; v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS; v->rangelow = 50000000; v->rangehigh = 2000000000; ret = 0; } else { ret = -EINVAL; } return ret; } static int rtl2832_sdr_s_tuner(struct file *file, void *priv, const struct v4l2_tuner *v) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; int ret; dev_dbg(&pdev->dev, "\n"); if (v->index == 0) { ret = 0; } else if (v->index == 1 && V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) { ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v); } else if (v->index == 1) { ret = 0; } else { ret = -EINVAL; } return ret; } static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv, struct v4l2_frequency_band *band) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; int ret; dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n", band->tuner, band->type, band->index); if (band->tuner == 0) { if (band->index >= ARRAY_SIZE(bands_adc)) return -EINVAL; *band = bands_adc[band->index]; ret = 0; } else if (band->tuner == 1 && V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) { ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band); } else if (band->tuner == 1) { if (band->index >= ARRAY_SIZE(bands_fm)) return -EINVAL; *band = bands_fm[band->index]; ret = 0; } else { ret = -EINVAL; } return ret; } static int rtl2832_sdr_g_frequency(struct file *file, void *priv, struct v4l2_frequency *f) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; int ret; dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type); if (f->tuner == 0) { f->frequency = dev->f_adc; f->type = V4L2_TUNER_ADC; ret = 0; } else if (f->tuner == 1 && V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) { f->type = V4L2_TUNER_RF; ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f); } else if (f->tuner == 1) { f->frequency = dev->f_tuner; f->type = V4L2_TUNER_RF; ret = 0; } else { ret = -EINVAL; } return ret; } static int rtl2832_sdr_s_frequency(struct file *file, void *priv, const struct v4l2_frequency *f) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; int ret, band; dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n", f->tuner, f->type, f->frequency); /* ADC band midpoints */ #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2) #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2) if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) { if (f->frequency < BAND_ADC_0) band = 0; else if (f->frequency < BAND_ADC_1) band = 1; else band = 2; dev->f_adc = clamp_t(unsigned int, f->frequency, bands_adc[band].rangelow, bands_adc[band].rangehigh); dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc); ret = rtl2832_sdr_set_adc(dev); } else if (f->tuner == 1 && V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) { ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f); } else if (f->tuner == 1) { dev->f_tuner = clamp_t(unsigned int, f->frequency, bands_fm[0].rangelow, bands_fm[0].rangehigh); dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency); ret = rtl2832_sdr_set_tuner_freq(dev); } else { ret = -EINVAL; } return ret; } static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv, struct v4l2_fmtdesc *f) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; dev_dbg(&pdev->dev, "\n"); if (f->index >= dev->num_formats) return -EINVAL; f->pixelformat = formats[f->index].pixelformat; return 0; } static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv, struct v4l2_format *f) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; dev_dbg(&pdev->dev, "\n"); f->fmt.sdr.pixelformat = dev->pixelformat; f->fmt.sdr.buffersize = dev->buffersize; return 0; } static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv, struct v4l2_format *f) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; struct vb2_queue *q = &dev->vb_queue; int i; dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n", (char *)&f->fmt.sdr.pixelformat); if (vb2_is_busy(q)) return -EBUSY; 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 rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv, struct v4l2_format *f) { struct rtl2832_sdr_dev *dev = video_drvdata(file); struct platform_device *pdev = dev->pdev; int i; dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n", (char *)&f->fmt.sdr.pixelformat); 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 const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = { .vidioc_querycap = rtl2832_sdr_querycap, .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap, .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap, .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap, .vidioc_try_fmt_sdr_cap = rtl2832_sdr_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 = rtl2832_sdr_g_tuner, .vidioc_s_tuner = rtl2832_sdr_s_tuner, .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands, .vidioc_g_frequency = rtl2832_sdr_g_frequency, .vidioc_s_frequency = rtl2832_sdr_s_frequency, .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 rtl2832_sdr_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 rtl2832_sdr_template = { .name = "Realtek RTL2832 SDR", .release = video_device_release_empty, .fops = &rtl2832_sdr_fops, .ioctl_ops = &rtl2832_sdr_ioctl_ops, .device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING | V4L2_CAP_READWRITE | V4L2_CAP_TUNER, }; static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl) { struct rtl2832_sdr_dev *dev = container_of(ctrl->handler, struct rtl2832_sdr_dev, hdl); struct platform_device *pdev = dev->pdev; struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; struct dvb_frontend *fe = pdata->dvb_frontend; struct dtv_frontend_properties *c = &fe->dtv_property_cache; int ret; dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n", ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum, ctrl->step); switch (ctrl->id) { case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO: case V4L2_CID_RF_TUNER_BANDWIDTH: /* TODO: these controls should be moved to tuner drivers */ if (dev->bandwidth_auto->val) { /* Round towards the closest legal value */ s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2); u32 offset; val = clamp_t(s32, val, dev->bandwidth->minimum, dev->bandwidth->maximum); offset = val - dev->bandwidth->minimum; offset = dev->bandwidth->step * div_u64(offset, dev->bandwidth->step); dev->bandwidth->val = dev->bandwidth->minimum + offset; } c->bandwidth_hz = dev->bandwidth->val; if (!test_bit(POWER_ON, &dev->flags)) return 0; if (fe->ops.tuner_ops.set_params) ret = fe->ops.tuner_ops.set_params(fe); else ret = 0; break; default: ret = -EINVAL; } return ret; } static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = { .s_ctrl = rtl2832_sdr_s_ctrl, }; static void rtl2832_sdr_video_release(struct v4l2_device *v) { struct rtl2832_sdr_dev *dev = container_of(v, struct rtl2832_sdr_dev, v4l2_dev); struct platform_device *pdev = dev->pdev; dev_dbg(&pdev->dev, "\n"); v4l2_ctrl_handler_free(&dev->hdl); v4l2_device_unregister(&dev->v4l2_dev); kfree(dev); } /* Platform driver interface */ static int rtl2832_sdr_probe(struct platform_device *pdev) { struct rtl2832_sdr_dev *dev; struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data; const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops; struct v4l2_subdev *subdev; int ret; dev_dbg(&pdev->dev, "\n"); if (!pdata) { dev_err(&pdev->dev, "Cannot proceed without platform data\n"); ret = -EINVAL; goto err; } if (!pdev->dev.parent->driver) { dev_dbg(&pdev->dev, "No parent device\n"); ret = -EINVAL; goto err; } /* try to refcount host drv since we are the consumer */ if (!try_module_get(pdev->dev.parent->driver->owner)) { dev_err(&pdev->dev, "Refcount fail"); ret = -EINVAL; goto err; } dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (dev == NULL) { ret = -ENOMEM; goto err_module_put; } /* setup the state */ subdev = pdata->v4l2_subdev; dev->v4l2_subdev = pdata->v4l2_subdev; dev->pdev = pdev; dev->regmap = pdata->regmap; dev->udev = pdata->dvb_usb_device->udev; dev->f_adc = bands_adc[0].rangelow; dev->f_tuner = bands_fm[0].rangelow; dev->pixelformat = formats[0].pixelformat; dev->buffersize = formats[0].buffersize; dev->num_formats = NUM_FORMATS; if (!rtl2832_sdr_emulated_fmt) dev->num_formats -= 1; mutex_init(&dev->v4l2_lock); mutex_init(&dev->vb_queue_lock); spin_lock_init(&dev->queued_bufs_lock); INIT_LIST_HEAD(&dev->queued_bufs); /* 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 rtl2832_sdr_frame_buf); dev->vb_queue.ops = &rtl2832_sdr_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(&pdev->dev, "Could not initialize vb2 queue\n"); goto err_kfree; } /* Register controls */ switch (pdata->tuner) { case RTL2832_SDR_TUNER_E4000: v4l2_ctrl_handler_init(&dev->hdl, 9); if (subdev) v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, NULL, true); break; case RTL2832_SDR_TUNER_R820T: case RTL2832_SDR_TUNER_R828D: v4l2_ctrl_handler_init(&dev->hdl, 2); dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops, V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1); dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, V4L2_CID_RF_TUNER_BANDWIDTH, 0, 8000000, 100000, 0); v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); break; case RTL2832_SDR_TUNER_FC0012: case RTL2832_SDR_TUNER_FC0013: v4l2_ctrl_handler_init(&dev->hdl, 2); dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops, V4L2_CID_RF_TUNER_BANDWIDTH_AUTO, 0, 1, 1, 1); dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops, V4L2_CID_RF_TUNER_BANDWIDTH, 6000000, 8000000, 1000000, 6000000); v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false); break; case RTL2832_SDR_TUNER_FC2580: v4l2_ctrl_handler_init(&dev->hdl, 2); if (subdev) v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler, NULL, true); break; default: v4l2_ctrl_handler_init(&dev->hdl, 0); dev_err(&pdev->dev, "Unsupported tuner\n"); ret = -ENODEV; goto err_v4l2_ctrl_handler_free; } if (dev->hdl.error) { ret = dev->hdl.error; dev_err(&pdev->dev, "Could not initialize controls\n"); goto err_v4l2_ctrl_handler_free; } /* Init video_device structure */ dev->vdev = rtl2832_sdr_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 = rtl2832_sdr_video_release; ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); if (ret) { dev_err(&pdev->dev, "Failed to register v4l2-device %d\n", ret); goto err_v4l2_ctrl_handler_free; } dev->v4l2_dev.ctrl_handler = &dev->hdl; dev->vdev.v4l2_dev = &dev->v4l2_dev; dev->vdev.lock = &dev->v4l2_lock; dev->vdev.vfl_dir = VFL_DIR_RX; ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1); if (ret) { dev_err(&pdev->dev, "Failed to register as video device %d\n", ret); goto err_v4l2_device_unregister; } dev_info(&pdev->dev, "Registered as %s\n", video_device_node_name(&dev->vdev)); dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n"); dev_notice(&pdev->dev, "SDR API is still slightly experimental and functionality changes may follow\n"); platform_set_drvdata(pdev, dev); return 0; err_v4l2_device_unregister: v4l2_device_unregister(&dev->v4l2_dev); err_v4l2_ctrl_handler_free: v4l2_ctrl_handler_free(&dev->hdl); err_kfree: kfree(dev); err_module_put: module_put(pdev->dev.parent->driver->owner); err: return ret; } static void rtl2832_sdr_remove(struct platform_device *pdev) { struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev); dev_dbg(&pdev->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); mutex_unlock(&dev->v4l2_lock); mutex_unlock(&dev->vb_queue_lock); v4l2_device_put(&dev->v4l2_dev); module_put(pdev->dev.parent->driver->owner); } static struct platform_driver rtl2832_sdr_driver = { .driver = { .name = "rtl2832_sdr", }, .probe = rtl2832_sdr_probe, .remove_new = rtl2832_sdr_remove, }; module_platform_driver(rtl2832_sdr_driver); MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); MODULE_DESCRIPTION("Realtek RTL2832 SDR driver"); MODULE_LICENSE("GPL");
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