v4.19.13 snapshot.
diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
new file mode 100644
index 0000000..d448d9d
--- /dev/null
+++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
@@ -0,0 +1,1514 @@
+/*
+ * Realtek RTL2832U SDR 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.
+ *
+ * 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");
+
+ strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
+ strlcpy(cap->card, dev->vdev.name, sizeof(cap->card));
+ usb_make_path(dev->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 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 queing 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) {
+ strlcpy(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) {
+ strlcpy(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;
+
+ strlcpy(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,
+};
+
+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);
+ 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);
+ 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");