| // 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: |
| * http://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[] = { |
| { |
| .name = "Complex U8", |
| .pixelformat = V4L2_SDR_FMT_CU8, |
| .buffersize = BULK_BUFFER_SIZE, |
| }, { |
| .name = "Complex U16LE (emulated)", |
| .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, |
| "videobuf 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]); |
| 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; |
| |
| strscpy(f->description, formats[f->index].name, sizeof(f->description)); |
| 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; |
| |
| memset(f->fmt.sdr.reserved, 0, sizeof(f->fmt.sdr.reserved)); |
| |
| 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; |
| |
| 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 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); |
| |
| 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 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"); |
| 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 int 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); |
| |
| return 0; |
| } |
| |
| static struct platform_driver rtl2832_sdr_driver = { |
| .driver = { |
| .name = "rtl2832_sdr", |
| }, |
| .probe = rtl2832_sdr_probe, |
| .remove = 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"); |
