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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Realtek RTL2832U SDR driver4 *5 * Copyright (C) 2013 Antti Palosaari <crope@iki.fi>6 *7 * GNU Radio plugin "gr-kernel" for device usage will be on:8 * https://git.linuxtv.org/anttip/gr-kernel.git9 */10 11#include "rtl2832_sdr.h"12#include "dvb_usb.h"13 14#include <media/v4l2-device.h>15#include <media/v4l2-ioctl.h>16#include <media/v4l2-ctrls.h>17#include <media/v4l2-event.h>18#include <media/videobuf2-v4l2.h>19#include <media/videobuf2-vmalloc.h>20 21#include <linux/platform_device.h>22#include <linux/jiffies.h>23#include <linux/math64.h>24#include <linux/regmap.h>25 26static bool rtl2832_sdr_emulated_fmt;27module_param_named(emulated_formats, rtl2832_sdr_emulated_fmt, bool, 0644);28MODULE_PARM_DESC(emulated_formats, "enable emulated formats (disappears in future)");29 30/* Original macro does not contain enough null pointer checks for our need */31#define V4L2_SUBDEV_HAS_OP(sd, o, f) \32 ((sd) && (sd)->ops && (sd)->ops->o && (sd)->ops->o->f)33 34#define MAX_BULK_BUFS (10)35#define BULK_BUFFER_SIZE (128 * 512)36 37static const struct v4l2_frequency_band bands_adc[] = {38 {39 .tuner = 0,40 .type = V4L2_TUNER_ADC,41 .index = 0,42 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,43 .rangelow = 300000,44 .rangehigh = 300000,45 },46 {47 .tuner = 0,48 .type = V4L2_TUNER_ADC,49 .index = 1,50 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,51 .rangelow = 900001,52 .rangehigh = 2800000,53 },54 {55 .tuner = 0,56 .type = V4L2_TUNER_ADC,57 .index = 2,58 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,59 .rangelow = 3200000,60 .rangehigh = 3200000,61 },62};63 64static const struct v4l2_frequency_band bands_fm[] = {65 {66 .tuner = 1,67 .type = V4L2_TUNER_RF,68 .index = 0,69 .capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS,70 .rangelow = 50000000,71 .rangehigh = 2000000000,72 },73};74 75/* stream formats */76struct rtl2832_sdr_format {77 char *name;78 u32 pixelformat;79 u32 buffersize;80};81 82static struct rtl2832_sdr_format formats[] = {83 {84 .pixelformat = V4L2_SDR_FMT_CU8,85 .buffersize = BULK_BUFFER_SIZE,86 }, {87 .pixelformat = V4L2_SDR_FMT_CU16LE,88 .buffersize = BULK_BUFFER_SIZE * 2,89 },90};91 92static const unsigned int NUM_FORMATS = ARRAY_SIZE(formats);93 94/* intermediate buffers with raw data from the USB device */95struct rtl2832_sdr_frame_buf {96 /* common v4l buffer stuff -- must be first */97 struct vb2_v4l2_buffer vb;98 struct list_head list;99};100 101struct rtl2832_sdr_dev {102#define POWER_ON 0 /* BIT(0) */103#define URB_BUF 1 /* BIT(1) */104 unsigned long flags;105 106 struct platform_device *pdev;107 struct regmap *regmap;108 109 struct video_device vdev;110 struct v4l2_device v4l2_dev;111 struct v4l2_subdev *v4l2_subdev;112 113 /* videobuf2 queue and queued buffers list */114 struct vb2_queue vb_queue;115 struct list_head queued_bufs;116 spinlock_t queued_bufs_lock; /* Protects queued_bufs */117 unsigned sequence; /* buffer sequence counter */118 119 /* Note if taking both locks v4l2_lock must always be locked first! */120 struct mutex v4l2_lock; /* Protects everything else */121 struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */122 123 /* Pointer to our usb_device, will be NULL after unplug */124 struct usb_device *udev; /* Both mutexes most be hold when setting! */125 126 unsigned int vb_full; /* vb is full and packets dropped */127 128 struct urb *urb_list[MAX_BULK_BUFS];129 int buf_num;130 unsigned long buf_size;131 u8 *buf_list[MAX_BULK_BUFS];132 dma_addr_t dma_addr[MAX_BULK_BUFS];133 int urbs_initialized;134 int urbs_submitted;135 136 unsigned int f_adc, f_tuner;137 u32 pixelformat;138 u32 buffersize;139 unsigned int num_formats;140 141 /* Controls */142 struct v4l2_ctrl_handler hdl;143 struct v4l2_ctrl *bandwidth_auto;144 struct v4l2_ctrl *bandwidth;145 146 /* for sample rate calc */147 unsigned int sample;148 unsigned int sample_measured;149 unsigned long jiffies_next;150};151 152/* Private functions */153static struct rtl2832_sdr_frame_buf *rtl2832_sdr_get_next_fill_buf(154 struct rtl2832_sdr_dev *dev)155{156 unsigned long flags;157 struct rtl2832_sdr_frame_buf *buf = NULL;158 159 spin_lock_irqsave(&dev->queued_bufs_lock, flags);160 if (list_empty(&dev->queued_bufs))161 goto leave;162 163 buf = list_entry(dev->queued_bufs.next,164 struct rtl2832_sdr_frame_buf, list);165 list_del(&buf->list);166leave:167 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);168 return buf;169}170 171static unsigned int rtl2832_sdr_convert_stream(struct rtl2832_sdr_dev *dev,172 void *dst, const u8 *src, unsigned int src_len)173{174 struct platform_device *pdev = dev->pdev;175 unsigned int dst_len;176 177 if (dev->pixelformat == V4L2_SDR_FMT_CU8) {178 /* native stream, no need to convert */179 memcpy(dst, src, src_len);180 dst_len = src_len;181 } else if (dev->pixelformat == V4L2_SDR_FMT_CU16LE) {182 /* convert u8 to u16 */183 unsigned int i;184 u16 *u16dst = dst;185 186 for (i = 0; i < src_len; i++)187 *u16dst++ = (src[i] << 8) | (src[i] >> 0);188 dst_len = 2 * src_len;189 } else {190 dst_len = 0;191 }192 193 /* calculate sample rate and output it in 10 seconds intervals */194 if (unlikely(time_is_before_jiffies(dev->jiffies_next))) {195 #define MSECS 10000UL196 unsigned int msecs = jiffies_to_msecs(jiffies -197 dev->jiffies_next + msecs_to_jiffies(MSECS));198 unsigned int samples = dev->sample - dev->sample_measured;199 200 dev->jiffies_next = jiffies + msecs_to_jiffies(MSECS);201 dev->sample_measured = dev->sample;202 dev_dbg(&pdev->dev,203 "slen=%u samples=%u msecs=%u sample rate=%lu\n",204 src_len, samples, msecs, samples * 1000UL / msecs);205 }206 207 /* total number of I+Q pairs */208 dev->sample += src_len / 2;209 210 return dst_len;211}212 213/*214 * This gets called for the bulk stream pipe. This is done in interrupt215 * time, so it has to be fast, not crash, and not stall. Neat.216 */217static void rtl2832_sdr_urb_complete(struct urb *urb)218{219 struct rtl2832_sdr_dev *dev = urb->context;220 struct platform_device *pdev = dev->pdev;221 struct rtl2832_sdr_frame_buf *fbuf;222 223 dev_dbg_ratelimited(&pdev->dev, "status=%d length=%d/%d errors=%d\n",224 urb->status, urb->actual_length,225 urb->transfer_buffer_length, urb->error_count);226 227 switch (urb->status) {228 case 0: /* success */229 case -ETIMEDOUT: /* NAK */230 break;231 case -ECONNRESET: /* kill */232 case -ENOENT:233 case -ESHUTDOWN:234 return;235 default: /* error */236 dev_err_ratelimited(&pdev->dev, "urb failed=%d\n", urb->status);237 break;238 }239 240 if (likely(urb->actual_length > 0)) {241 void *ptr;242 unsigned int len;243 /* get free framebuffer */244 fbuf = rtl2832_sdr_get_next_fill_buf(dev);245 if (unlikely(fbuf == NULL)) {246 dev->vb_full++;247 dev_notice_ratelimited(&pdev->dev,248 "video buffer is full, %d packets dropped\n",249 dev->vb_full);250 goto skip;251 }252 253 /* fill framebuffer */254 ptr = vb2_plane_vaddr(&fbuf->vb.vb2_buf, 0);255 len = rtl2832_sdr_convert_stream(dev, ptr, urb->transfer_buffer,256 urb->actual_length);257 vb2_set_plane_payload(&fbuf->vb.vb2_buf, 0, len);258 fbuf->vb.vb2_buf.timestamp = ktime_get_ns();259 fbuf->vb.sequence = dev->sequence++;260 vb2_buffer_done(&fbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);261 }262skip:263 usb_submit_urb(urb, GFP_ATOMIC);264}265 266static int rtl2832_sdr_kill_urbs(struct rtl2832_sdr_dev *dev)267{268 struct platform_device *pdev = dev->pdev;269 int i;270 271 for (i = dev->urbs_submitted - 1; i >= 0; i--) {272 dev_dbg(&pdev->dev, "kill urb=%d\n", i);273 /* stop the URB */274 usb_kill_urb(dev->urb_list[i]);275 }276 dev->urbs_submitted = 0;277 278 return 0;279}280 281static int rtl2832_sdr_submit_urbs(struct rtl2832_sdr_dev *dev)282{283 struct platform_device *pdev = dev->pdev;284 int i, ret;285 286 for (i = 0; i < dev->urbs_initialized; i++) {287 dev_dbg(&pdev->dev, "submit urb=%d\n", i);288 ret = usb_submit_urb(dev->urb_list[i], GFP_KERNEL);289 if (ret) {290 dev_err(&pdev->dev,291 "Could not submit urb no. %d - get them all back\n",292 i);293 rtl2832_sdr_kill_urbs(dev);294 return ret;295 }296 dev->urbs_submitted++;297 }298 299 return 0;300}301 302static int rtl2832_sdr_free_stream_bufs(struct rtl2832_sdr_dev *dev)303{304 struct platform_device *pdev = dev->pdev;305 306 if (test_bit(URB_BUF, &dev->flags)) {307 while (dev->buf_num) {308 dev->buf_num--;309 dev_dbg(&pdev->dev, "free buf=%d\n", dev->buf_num);310 usb_free_coherent(dev->udev, dev->buf_size,311 dev->buf_list[dev->buf_num],312 dev->dma_addr[dev->buf_num]);313 }314 }315 clear_bit(URB_BUF, &dev->flags);316 317 return 0;318}319 320static int rtl2832_sdr_alloc_stream_bufs(struct rtl2832_sdr_dev *dev)321{322 struct platform_device *pdev = dev->pdev;323 324 dev->buf_num = 0;325 dev->buf_size = BULK_BUFFER_SIZE;326 327 dev_dbg(&pdev->dev, "all in all I will use %u bytes for streaming\n",328 MAX_BULK_BUFS * BULK_BUFFER_SIZE);329 330 for (dev->buf_num = 0; dev->buf_num < MAX_BULK_BUFS; dev->buf_num++) {331 dev->buf_list[dev->buf_num] = usb_alloc_coherent(dev->udev,332 BULK_BUFFER_SIZE, GFP_KERNEL,333 &dev->dma_addr[dev->buf_num]);334 if (!dev->buf_list[dev->buf_num]) {335 dev_dbg(&pdev->dev, "alloc buf=%d failed\n",336 dev->buf_num);337 rtl2832_sdr_free_stream_bufs(dev);338 return -ENOMEM;339 }340 341 dev_dbg(&pdev->dev, "alloc buf=%d %p (dma %llu)\n",342 dev->buf_num, dev->buf_list[dev->buf_num],343 (long long)dev->dma_addr[dev->buf_num]);344 set_bit(URB_BUF, &dev->flags);345 }346 347 return 0;348}349 350static int rtl2832_sdr_free_urbs(struct rtl2832_sdr_dev *dev)351{352 struct platform_device *pdev = dev->pdev;353 int i;354 355 rtl2832_sdr_kill_urbs(dev);356 357 for (i = dev->urbs_initialized - 1; i >= 0; i--) {358 if (dev->urb_list[i]) {359 dev_dbg(&pdev->dev, "free urb=%d\n", i);360 /* free the URBs */361 usb_free_urb(dev->urb_list[i]);362 }363 }364 dev->urbs_initialized = 0;365 366 return 0;367}368 369static int rtl2832_sdr_alloc_urbs(struct rtl2832_sdr_dev *dev)370{371 struct platform_device *pdev = dev->pdev;372 int i, j;373 374 /* allocate the URBs */375 for (i = 0; i < MAX_BULK_BUFS; i++) {376 dev_dbg(&pdev->dev, "alloc urb=%d\n", i);377 dev->urb_list[i] = usb_alloc_urb(0, GFP_KERNEL);378 if (!dev->urb_list[i]) {379 for (j = 0; j < i; j++) {380 usb_free_urb(dev->urb_list[j]);381 dev->urb_list[j] = NULL;382 }383 dev->urbs_initialized = 0;384 return -ENOMEM;385 }386 usb_fill_bulk_urb(dev->urb_list[i],387 dev->udev,388 usb_rcvbulkpipe(dev->udev, 0x81),389 dev->buf_list[i],390 BULK_BUFFER_SIZE,391 rtl2832_sdr_urb_complete, dev);392 393 dev->urb_list[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;394 dev->urb_list[i]->transfer_dma = dev->dma_addr[i];395 dev->urbs_initialized++;396 }397 398 return 0;399}400 401/* Must be called with vb_queue_lock hold */402static void rtl2832_sdr_cleanup_queued_bufs(struct rtl2832_sdr_dev *dev)403{404 struct platform_device *pdev = dev->pdev;405 unsigned long flags;406 407 dev_dbg(&pdev->dev, "\n");408 409 spin_lock_irqsave(&dev->queued_bufs_lock, flags);410 while (!list_empty(&dev->queued_bufs)) {411 struct rtl2832_sdr_frame_buf *buf;412 413 buf = list_entry(dev->queued_bufs.next,414 struct rtl2832_sdr_frame_buf, list);415 list_del(&buf->list);416 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);417 }418 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);419}420 421static int rtl2832_sdr_querycap(struct file *file, void *fh,422 struct v4l2_capability *cap)423{424 struct rtl2832_sdr_dev *dev = video_drvdata(file);425 struct platform_device *pdev = dev->pdev;426 427 dev_dbg(&pdev->dev, "\n");428 429 strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));430 strscpy(cap->card, dev->vdev.name, sizeof(cap->card));431 usb_make_path(dev->udev, cap->bus_info, sizeof(cap->bus_info));432 return 0;433}434 435/* Videobuf2 operations */436static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,437 unsigned int *nbuffers,438 unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])439{440 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);441 struct platform_device *pdev = dev->pdev;442 unsigned int q_num_bufs = vb2_get_num_buffers(vq);443 444 dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);445 446 /* Need at least 8 buffers */447 if (q_num_bufs + *nbuffers < 8)448 *nbuffers = 8 - q_num_bufs;449 *nplanes = 1;450 sizes[0] = PAGE_ALIGN(dev->buffersize);451 dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);452 return 0;453}454 455static int rtl2832_sdr_buf_prepare(struct vb2_buffer *vb)456{457 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);458 459 /* Don't allow queueing new buffers after device disconnection */460 if (!dev->udev)461 return -ENODEV;462 463 return 0;464}465 466static void rtl2832_sdr_buf_queue(struct vb2_buffer *vb)467{468 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);469 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vb->vb2_queue);470 struct rtl2832_sdr_frame_buf *buf =471 container_of(vbuf, struct rtl2832_sdr_frame_buf, vb);472 unsigned long flags;473 474 /* Check the device has not disconnected between prep and queuing */475 if (!dev->udev) {476 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);477 return;478 }479 480 spin_lock_irqsave(&dev->queued_bufs_lock, flags);481 list_add_tail(&buf->list, &dev->queued_bufs);482 spin_unlock_irqrestore(&dev->queued_bufs_lock, flags);483}484 485static int rtl2832_sdr_set_adc(struct rtl2832_sdr_dev *dev)486{487 struct platform_device *pdev = dev->pdev;488 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;489 struct dvb_frontend *fe = pdata->dvb_frontend;490 int ret;491 unsigned int f_sr, f_if;492 u8 buf[4], u8tmp1, u8tmp2;493 u64 u64tmp;494 u32 u32tmp;495 496 dev_dbg(&pdev->dev, "f_adc=%u\n", dev->f_adc);497 498 if (!test_bit(POWER_ON, &dev->flags))499 return 0;500 501 if (dev->f_adc == 0)502 return 0;503 504 f_sr = dev->f_adc;505 506 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x00\x00", 2);507 if (ret)508 goto err;509 510 ret = regmap_bulk_write(dev->regmap, 0x115, "\x00\x00\x00\x00", 4);511 if (ret)512 goto err;513 514 /* get IF from tuner */515 if (fe->ops.tuner_ops.get_if_frequency)516 ret = fe->ops.tuner_ops.get_if_frequency(fe, &f_if);517 else518 ret = -EINVAL;519 520 if (ret)521 goto err;522 523 /* program IF */524 u64tmp = f_if % pdata->clk;525 u64tmp *= 0x400000;526 u64tmp = div_u64(u64tmp, pdata->clk);527 u64tmp = -u64tmp;528 u32tmp = u64tmp & 0x3fffff;529 530 dev_dbg(&pdev->dev, "f_if=%u if_ctl=%08x\n", f_if, u32tmp);531 532 buf[0] = (u32tmp >> 16) & 0xff;533 buf[1] = (u32tmp >> 8) & 0xff;534 buf[2] = (u32tmp >> 0) & 0xff;535 536 ret = regmap_bulk_write(dev->regmap, 0x119, buf, 3);537 if (ret)538 goto err;539 540 /* BB / IF mode */541 /* POR: 0x1b1=0x1f, 0x008=0x0d, 0x006=0x80 */542 if (f_if) {543 u8tmp1 = 0x1a; /* disable Zero-IF */544 u8tmp2 = 0x8d; /* enable ADC I */545 } else {546 u8tmp1 = 0x1b; /* enable Zero-IF, DC, IQ */547 u8tmp2 = 0xcd; /* enable ADC I, ADC Q */548 }549 550 ret = regmap_write(dev->regmap, 0x1b1, u8tmp1);551 if (ret)552 goto err;553 554 ret = regmap_write(dev->regmap, 0x008, u8tmp2);555 if (ret)556 goto err;557 558 ret = regmap_write(dev->regmap, 0x006, 0x80);559 if (ret)560 goto err;561 562 /* program sampling rate (resampling down) */563 u32tmp = div_u64(pdata->clk * 0x400000ULL, f_sr * 4U);564 u32tmp <<= 2;565 buf[0] = (u32tmp >> 24) & 0xff;566 buf[1] = (u32tmp >> 16) & 0xff;567 buf[2] = (u32tmp >> 8) & 0xff;568 buf[3] = (u32tmp >> 0) & 0xff;569 ret = regmap_bulk_write(dev->regmap, 0x19f, buf, 4);570 if (ret)571 goto err;572 573 /* low-pass filter */574 ret = regmap_bulk_write(dev->regmap, 0x11c,575 "\xca\xdc\xd7\xd8\xe0\xf2\x0e\x35\x06\x50\x9c\x0d\x71\x11\x14\x71\x74\x19\x41\xa5",576 20);577 if (ret)578 goto err;579 580 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2);581 if (ret)582 goto err;583 584 /* mode */585 ret = regmap_write(dev->regmap, 0x019, 0x05);586 if (ret)587 goto err;588 589 ret = regmap_bulk_write(dev->regmap, 0x01a,590 "\x1b\x16\x0d\x06\x01\xff", 6);591 if (ret)592 goto err;593 594 /* FSM */595 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\xf0\x0f", 3);596 if (ret)597 goto err;598 599 /* PID filter */600 ret = regmap_write(dev->regmap, 0x061, 0x60);601 if (ret)602 goto err;603 604 /* used RF tuner based settings */605 switch (pdata->tuner) {606 case RTL2832_SDR_TUNER_E4000:607 ret = regmap_write(dev->regmap, 0x112, 0x5a);608 ret = regmap_write(dev->regmap, 0x102, 0x40);609 ret = regmap_write(dev->regmap, 0x103, 0x5a);610 ret = regmap_write(dev->regmap, 0x1c7, 0x30);611 ret = regmap_write(dev->regmap, 0x104, 0xd0);612 ret = regmap_write(dev->regmap, 0x105, 0xbe);613 ret = regmap_write(dev->regmap, 0x1c8, 0x18);614 ret = regmap_write(dev->regmap, 0x106, 0x35);615 ret = regmap_write(dev->regmap, 0x1c9, 0x21);616 ret = regmap_write(dev->regmap, 0x1ca, 0x21);617 ret = regmap_write(dev->regmap, 0x1cb, 0x00);618 ret = regmap_write(dev->regmap, 0x107, 0x40);619 ret = regmap_write(dev->regmap, 0x1cd, 0x10);620 ret = regmap_write(dev->regmap, 0x1ce, 0x10);621 ret = regmap_write(dev->regmap, 0x108, 0x80);622 ret = regmap_write(dev->regmap, 0x109, 0x7f);623 ret = regmap_write(dev->regmap, 0x10a, 0x80);624 ret = regmap_write(dev->regmap, 0x10b, 0x7f);625 ret = regmap_write(dev->regmap, 0x00e, 0xfc);626 ret = regmap_write(dev->regmap, 0x00e, 0xfc);627 ret = regmap_write(dev->regmap, 0x011, 0xd4);628 ret = regmap_write(dev->regmap, 0x1e5, 0xf0);629 ret = regmap_write(dev->regmap, 0x1d9, 0x00);630 ret = regmap_write(dev->regmap, 0x1db, 0x00);631 ret = regmap_write(dev->regmap, 0x1dd, 0x14);632 ret = regmap_write(dev->regmap, 0x1de, 0xec);633 ret = regmap_write(dev->regmap, 0x1d8, 0x0c);634 ret = regmap_write(dev->regmap, 0x1e6, 0x02);635 ret = regmap_write(dev->regmap, 0x1d7, 0x09);636 ret = regmap_write(dev->regmap, 0x00d, 0x83);637 ret = regmap_write(dev->regmap, 0x010, 0x49);638 ret = regmap_write(dev->regmap, 0x00d, 0x87);639 ret = regmap_write(dev->regmap, 0x00d, 0x85);640 ret = regmap_write(dev->regmap, 0x013, 0x02);641 break;642 case RTL2832_SDR_TUNER_FC0012:643 case RTL2832_SDR_TUNER_FC0013:644 ret = regmap_write(dev->regmap, 0x112, 0x5a);645 ret = regmap_write(dev->regmap, 0x102, 0x40);646 ret = regmap_write(dev->regmap, 0x103, 0x5a);647 ret = regmap_write(dev->regmap, 0x1c7, 0x2c);648 ret = regmap_write(dev->regmap, 0x104, 0xcc);649 ret = regmap_write(dev->regmap, 0x105, 0xbe);650 ret = regmap_write(dev->regmap, 0x1c8, 0x16);651 ret = regmap_write(dev->regmap, 0x106, 0x35);652 ret = regmap_write(dev->regmap, 0x1c9, 0x21);653 ret = regmap_write(dev->regmap, 0x1ca, 0x21);654 ret = regmap_write(dev->regmap, 0x1cb, 0x00);655 ret = regmap_write(dev->regmap, 0x107, 0x40);656 ret = regmap_write(dev->regmap, 0x1cd, 0x10);657 ret = regmap_write(dev->regmap, 0x1ce, 0x10);658 ret = regmap_write(dev->regmap, 0x108, 0x80);659 ret = regmap_write(dev->regmap, 0x109, 0x7f);660 ret = regmap_write(dev->regmap, 0x10a, 0x80);661 ret = regmap_write(dev->regmap, 0x10b, 0x7f);662 ret = regmap_write(dev->regmap, 0x00e, 0xfc);663 ret = regmap_write(dev->regmap, 0x00e, 0xfc);664 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xbf", 2);665 ret = regmap_write(dev->regmap, 0x1e5, 0xf0);666 ret = regmap_write(dev->regmap, 0x1d9, 0x00);667 ret = regmap_write(dev->regmap, 0x1db, 0x00);668 ret = regmap_write(dev->regmap, 0x1dd, 0x11);669 ret = regmap_write(dev->regmap, 0x1de, 0xef);670 ret = regmap_write(dev->regmap, 0x1d8, 0x0c);671 ret = regmap_write(dev->regmap, 0x1e6, 0x02);672 ret = regmap_write(dev->regmap, 0x1d7, 0x09);673 break;674 case RTL2832_SDR_TUNER_R820T:675 case RTL2832_SDR_TUNER_R828D:676 ret = regmap_write(dev->regmap, 0x112, 0x5a);677 ret = regmap_write(dev->regmap, 0x102, 0x40);678 ret = regmap_write(dev->regmap, 0x115, 0x01);679 ret = regmap_write(dev->regmap, 0x103, 0x80);680 ret = regmap_write(dev->regmap, 0x1c7, 0x24);681 ret = regmap_write(dev->regmap, 0x104, 0xcc);682 ret = regmap_write(dev->regmap, 0x105, 0xbe);683 ret = regmap_write(dev->regmap, 0x1c8, 0x14);684 ret = regmap_write(dev->regmap, 0x106, 0x35);685 ret = regmap_write(dev->regmap, 0x1c9, 0x21);686 ret = regmap_write(dev->regmap, 0x1ca, 0x21);687 ret = regmap_write(dev->regmap, 0x1cb, 0x00);688 ret = regmap_write(dev->regmap, 0x107, 0x40);689 ret = regmap_write(dev->regmap, 0x1cd, 0x10);690 ret = regmap_write(dev->regmap, 0x1ce, 0x10);691 ret = regmap_write(dev->regmap, 0x108, 0x80);692 ret = regmap_write(dev->regmap, 0x109, 0x7f);693 ret = regmap_write(dev->regmap, 0x10a, 0x80);694 ret = regmap_write(dev->regmap, 0x10b, 0x7f);695 ret = regmap_write(dev->regmap, 0x00e, 0xfc);696 ret = regmap_write(dev->regmap, 0x00e, 0xfc);697 ret = regmap_write(dev->regmap, 0x011, 0xf4);698 break;699 case RTL2832_SDR_TUNER_FC2580:700 ret = regmap_write(dev->regmap, 0x112, 0x39);701 ret = regmap_write(dev->regmap, 0x102, 0x40);702 ret = regmap_write(dev->regmap, 0x103, 0x5a);703 ret = regmap_write(dev->regmap, 0x1c7, 0x2c);704 ret = regmap_write(dev->regmap, 0x104, 0xcc);705 ret = regmap_write(dev->regmap, 0x105, 0xbe);706 ret = regmap_write(dev->regmap, 0x1c8, 0x16);707 ret = regmap_write(dev->regmap, 0x106, 0x35);708 ret = regmap_write(dev->regmap, 0x1c9, 0x21);709 ret = regmap_write(dev->regmap, 0x1ca, 0x21);710 ret = regmap_write(dev->regmap, 0x1cb, 0x00);711 ret = regmap_write(dev->regmap, 0x107, 0x40);712 ret = regmap_write(dev->regmap, 0x1cd, 0x10);713 ret = regmap_write(dev->regmap, 0x1ce, 0x10);714 ret = regmap_write(dev->regmap, 0x108, 0x80);715 ret = regmap_write(dev->regmap, 0x109, 0x7f);716 ret = regmap_write(dev->regmap, 0x10a, 0x9c);717 ret = regmap_write(dev->regmap, 0x10b, 0x7f);718 ret = regmap_write(dev->regmap, 0x00e, 0xfc);719 ret = regmap_write(dev->regmap, 0x00e, 0xfc);720 ret = regmap_bulk_write(dev->regmap, 0x011, "\xe9\xf4", 2);721 break;722 default:723 dev_notice(&pdev->dev, "Unsupported tuner\n");724 }725 726 /* software reset */727 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x04);728 if (ret)729 goto err;730 731 ret = regmap_update_bits(dev->regmap, 0x101, 0x04, 0x00);732 if (ret)733 goto err;734err:735 return ret;736};737 738static void rtl2832_sdr_unset_adc(struct rtl2832_sdr_dev *dev)739{740 struct platform_device *pdev = dev->pdev;741 int ret;742 743 dev_dbg(&pdev->dev, "\n");744 745 /* PID filter */746 ret = regmap_write(dev->regmap, 0x061, 0xe0);747 if (ret)748 goto err;749 750 /* mode */751 ret = regmap_write(dev->regmap, 0x019, 0x20);752 if (ret)753 goto err;754 755 ret = regmap_bulk_write(dev->regmap, 0x017, "\x11\x10", 2);756 if (ret)757 goto err;758 759 /* FSM */760 ret = regmap_bulk_write(dev->regmap, 0x192, "\x00\x0f\xff", 3);761 if (ret)762 goto err;763 764 ret = regmap_bulk_write(dev->regmap, 0x13e, "\x40\x00", 2);765 if (ret)766 goto err;767 768 ret = regmap_bulk_write(dev->regmap, 0x115, "\x06\x3f\xce\xcc", 4);769 if (ret)770 goto err;771err:772 return;773};774 775static int rtl2832_sdr_set_tuner_freq(struct rtl2832_sdr_dev *dev)776{777 struct platform_device *pdev = dev->pdev;778 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;779 struct dvb_frontend *fe = pdata->dvb_frontend;780 struct dtv_frontend_properties *c = &fe->dtv_property_cache;781 struct v4l2_ctrl *bandwidth_auto;782 struct v4l2_ctrl *bandwidth;783 784 /*785 * tuner RF (Hz)786 */787 if (dev->f_tuner == 0)788 return 0;789 790 /*791 * bandwidth (Hz)792 */793 bandwidth_auto = v4l2_ctrl_find(&dev->hdl,794 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO);795 bandwidth = v4l2_ctrl_find(&dev->hdl, V4L2_CID_RF_TUNER_BANDWIDTH);796 if (v4l2_ctrl_g_ctrl(bandwidth_auto)) {797 c->bandwidth_hz = dev->f_adc;798 v4l2_ctrl_s_ctrl(bandwidth, dev->f_adc);799 } else {800 c->bandwidth_hz = v4l2_ctrl_g_ctrl(bandwidth);801 }802 803 c->frequency = dev->f_tuner;804 c->delivery_system = SYS_DVBT;805 806 dev_dbg(&pdev->dev, "frequency=%u bandwidth=%d\n",807 c->frequency, c->bandwidth_hz);808 809 if (!test_bit(POWER_ON, &dev->flags))810 return 0;811 812 if (!V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) {813 if (fe->ops.tuner_ops.set_params)814 fe->ops.tuner_ops.set_params(fe);815 }816 817 return 0;818};819 820static int rtl2832_sdr_set_tuner(struct rtl2832_sdr_dev *dev)821{822 struct platform_device *pdev = dev->pdev;823 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;824 struct dvb_frontend *fe = pdata->dvb_frontend;825 826 dev_dbg(&pdev->dev, "\n");827 828 if (fe->ops.tuner_ops.init)829 fe->ops.tuner_ops.init(fe);830 831 return 0;832};833 834static void rtl2832_sdr_unset_tuner(struct rtl2832_sdr_dev *dev)835{836 struct platform_device *pdev = dev->pdev;837 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;838 struct dvb_frontend *fe = pdata->dvb_frontend;839 840 dev_dbg(&pdev->dev, "\n");841 842 if (fe->ops.tuner_ops.sleep)843 fe->ops.tuner_ops.sleep(fe);844 845 return;846};847 848static int rtl2832_sdr_start_streaming(struct vb2_queue *vq, unsigned int count)849{850 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);851 struct platform_device *pdev = dev->pdev;852 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;853 struct dvb_usb_device *d = pdata->dvb_usb_device;854 int ret;855 856 dev_dbg(&pdev->dev, "\n");857 858 if (!dev->udev)859 return -ENODEV;860 861 if (mutex_lock_interruptible(&dev->v4l2_lock))862 return -ERESTARTSYS;863 864 if (d->props->power_ctrl)865 d->props->power_ctrl(d, 1);866 867 /* enable ADC */868 if (d->props->frontend_ctrl)869 d->props->frontend_ctrl(pdata->dvb_frontend, 1);870 871 set_bit(POWER_ON, &dev->flags);872 873 /* wake-up tuner */874 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power))875 ret = v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 1);876 else877 ret = rtl2832_sdr_set_tuner(dev);878 if (ret)879 goto err;880 881 ret = rtl2832_sdr_set_tuner_freq(dev);882 if (ret)883 goto err;884 885 ret = rtl2832_sdr_set_adc(dev);886 if (ret)887 goto err;888 889 ret = rtl2832_sdr_alloc_stream_bufs(dev);890 if (ret)891 goto err;892 893 ret = rtl2832_sdr_alloc_urbs(dev);894 if (ret)895 goto err;896 897 dev->sequence = 0;898 899 ret = rtl2832_sdr_submit_urbs(dev);900 if (ret)901 goto err;902 903err:904 mutex_unlock(&dev->v4l2_lock);905 906 return ret;907}908 909static void rtl2832_sdr_stop_streaming(struct vb2_queue *vq)910{911 struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);912 struct platform_device *pdev = dev->pdev;913 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;914 struct dvb_usb_device *d = pdata->dvb_usb_device;915 916 dev_dbg(&pdev->dev, "\n");917 918 mutex_lock(&dev->v4l2_lock);919 920 rtl2832_sdr_kill_urbs(dev);921 rtl2832_sdr_free_urbs(dev);922 rtl2832_sdr_free_stream_bufs(dev);923 rtl2832_sdr_cleanup_queued_bufs(dev);924 rtl2832_sdr_unset_adc(dev);925 926 /* sleep tuner */927 if (V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, core, s_power))928 v4l2_subdev_call(dev->v4l2_subdev, core, s_power, 0);929 else930 rtl2832_sdr_unset_tuner(dev);931 932 clear_bit(POWER_ON, &dev->flags);933 934 /* disable ADC */935 if (d->props->frontend_ctrl)936 d->props->frontend_ctrl(pdata->dvb_frontend, 0);937 938 if (d->props->power_ctrl)939 d->props->power_ctrl(d, 0);940 941 mutex_unlock(&dev->v4l2_lock);942}943 944static const struct vb2_ops rtl2832_sdr_vb2_ops = {945 .queue_setup = rtl2832_sdr_queue_setup,946 .buf_prepare = rtl2832_sdr_buf_prepare,947 .buf_queue = rtl2832_sdr_buf_queue,948 .start_streaming = rtl2832_sdr_start_streaming,949 .stop_streaming = rtl2832_sdr_stop_streaming,950 .wait_prepare = vb2_ops_wait_prepare,951 .wait_finish = vb2_ops_wait_finish,952};953 954static int rtl2832_sdr_g_tuner(struct file *file, void *priv,955 struct v4l2_tuner *v)956{957 struct rtl2832_sdr_dev *dev = video_drvdata(file);958 struct platform_device *pdev = dev->pdev;959 int ret;960 961 dev_dbg(&pdev->dev, "index=%d type=%d\n", v->index, v->type);962 963 if (v->index == 0) {964 strscpy(v->name, "ADC: Realtek RTL2832", sizeof(v->name));965 v->type = V4L2_TUNER_ADC;966 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;967 v->rangelow = 300000;968 v->rangehigh = 3200000;969 ret = 0;970 } else if (v->index == 1 &&971 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_tuner)) {972 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_tuner, v);973 } else if (v->index == 1) {974 strscpy(v->name, "RF: <unknown>", sizeof(v->name));975 v->type = V4L2_TUNER_RF;976 v->capability = V4L2_TUNER_CAP_1HZ | V4L2_TUNER_CAP_FREQ_BANDS;977 v->rangelow = 50000000;978 v->rangehigh = 2000000000;979 ret = 0;980 } else {981 ret = -EINVAL;982 }983 return ret;984}985 986static int rtl2832_sdr_s_tuner(struct file *file, void *priv,987 const struct v4l2_tuner *v)988{989 struct rtl2832_sdr_dev *dev = video_drvdata(file);990 struct platform_device *pdev = dev->pdev;991 int ret;992 993 dev_dbg(&pdev->dev, "\n");994 995 if (v->index == 0) {996 ret = 0;997 } else if (v->index == 1 &&998 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_tuner)) {999 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_tuner, v);1000 } else if (v->index == 1) {1001 ret = 0;1002 } else {1003 ret = -EINVAL;1004 }1005 return ret;1006}1007 1008static int rtl2832_sdr_enum_freq_bands(struct file *file, void *priv,1009 struct v4l2_frequency_band *band)1010{1011 struct rtl2832_sdr_dev *dev = video_drvdata(file);1012 struct platform_device *pdev = dev->pdev;1013 int ret;1014 1015 dev_dbg(&pdev->dev, "tuner=%d type=%d index=%d\n",1016 band->tuner, band->type, band->index);1017 1018 if (band->tuner == 0) {1019 if (band->index >= ARRAY_SIZE(bands_adc))1020 return -EINVAL;1021 1022 *band = bands_adc[band->index];1023 ret = 0;1024 } else if (band->tuner == 1 &&1025 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, enum_freq_bands)) {1026 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, enum_freq_bands, band);1027 } else if (band->tuner == 1) {1028 if (band->index >= ARRAY_SIZE(bands_fm))1029 return -EINVAL;1030 1031 *band = bands_fm[band->index];1032 ret = 0;1033 } else {1034 ret = -EINVAL;1035 }1036 return ret;1037}1038 1039static int rtl2832_sdr_g_frequency(struct file *file, void *priv,1040 struct v4l2_frequency *f)1041{1042 struct rtl2832_sdr_dev *dev = video_drvdata(file);1043 struct platform_device *pdev = dev->pdev;1044 int ret;1045 1046 dev_dbg(&pdev->dev, "tuner=%d type=%d\n", f->tuner, f->type);1047 1048 if (f->tuner == 0) {1049 f->frequency = dev->f_adc;1050 f->type = V4L2_TUNER_ADC;1051 ret = 0;1052 } else if (f->tuner == 1 &&1053 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, g_frequency)) {1054 f->type = V4L2_TUNER_RF;1055 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, g_frequency, f);1056 } else if (f->tuner == 1) {1057 f->frequency = dev->f_tuner;1058 f->type = V4L2_TUNER_RF;1059 ret = 0;1060 } else {1061 ret = -EINVAL;1062 }1063 return ret;1064}1065 1066static int rtl2832_sdr_s_frequency(struct file *file, void *priv,1067 const struct v4l2_frequency *f)1068{1069 struct rtl2832_sdr_dev *dev = video_drvdata(file);1070 struct platform_device *pdev = dev->pdev;1071 int ret, band;1072 1073 dev_dbg(&pdev->dev, "tuner=%d type=%d frequency=%u\n",1074 f->tuner, f->type, f->frequency);1075 1076 /* ADC band midpoints */1077 #define BAND_ADC_0 ((bands_adc[0].rangehigh + bands_adc[1].rangelow) / 2)1078 #define BAND_ADC_1 ((bands_adc[1].rangehigh + bands_adc[2].rangelow) / 2)1079 1080 if (f->tuner == 0 && f->type == V4L2_TUNER_ADC) {1081 if (f->frequency < BAND_ADC_0)1082 band = 0;1083 else if (f->frequency < BAND_ADC_1)1084 band = 1;1085 else1086 band = 2;1087 1088 dev->f_adc = clamp_t(unsigned int, f->frequency,1089 bands_adc[band].rangelow,1090 bands_adc[band].rangehigh);1091 1092 dev_dbg(&pdev->dev, "ADC frequency=%u Hz\n", dev->f_adc);1093 ret = rtl2832_sdr_set_adc(dev);1094 } else if (f->tuner == 1 &&1095 V4L2_SUBDEV_HAS_OP(dev->v4l2_subdev, tuner, s_frequency)) {1096 ret = v4l2_subdev_call(dev->v4l2_subdev, tuner, s_frequency, f);1097 } else if (f->tuner == 1) {1098 dev->f_tuner = clamp_t(unsigned int, f->frequency,1099 bands_fm[0].rangelow,1100 bands_fm[0].rangehigh);1101 dev_dbg(&pdev->dev, "RF frequency=%u Hz\n", f->frequency);1102 1103 ret = rtl2832_sdr_set_tuner_freq(dev);1104 } else {1105 ret = -EINVAL;1106 }1107 return ret;1108}1109 1110static int rtl2832_sdr_enum_fmt_sdr_cap(struct file *file, void *priv,1111 struct v4l2_fmtdesc *f)1112{1113 struct rtl2832_sdr_dev *dev = video_drvdata(file);1114 struct platform_device *pdev = dev->pdev;1115 1116 dev_dbg(&pdev->dev, "\n");1117 1118 if (f->index >= dev->num_formats)1119 return -EINVAL;1120 1121 f->pixelformat = formats[f->index].pixelformat;1122 1123 return 0;1124}1125 1126static int rtl2832_sdr_g_fmt_sdr_cap(struct file *file, void *priv,1127 struct v4l2_format *f)1128{1129 struct rtl2832_sdr_dev *dev = video_drvdata(file);1130 struct platform_device *pdev = dev->pdev;1131 1132 dev_dbg(&pdev->dev, "\n");1133 1134 f->fmt.sdr.pixelformat = dev->pixelformat;1135 f->fmt.sdr.buffersize = dev->buffersize;1136 1137 return 0;1138}1139 1140static int rtl2832_sdr_s_fmt_sdr_cap(struct file *file, void *priv,1141 struct v4l2_format *f)1142{1143 struct rtl2832_sdr_dev *dev = video_drvdata(file);1144 struct platform_device *pdev = dev->pdev;1145 struct vb2_queue *q = &dev->vb_queue;1146 int i;1147 1148 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n",1149 (char *)&f->fmt.sdr.pixelformat);1150 1151 if (vb2_is_busy(q))1152 return -EBUSY;1153 1154 for (i = 0; i < dev->num_formats; i++) {1155 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {1156 dev->pixelformat = formats[i].pixelformat;1157 dev->buffersize = formats[i].buffersize;1158 f->fmt.sdr.buffersize = formats[i].buffersize;1159 return 0;1160 }1161 }1162 1163 dev->pixelformat = formats[0].pixelformat;1164 dev->buffersize = formats[0].buffersize;1165 f->fmt.sdr.pixelformat = formats[0].pixelformat;1166 f->fmt.sdr.buffersize = formats[0].buffersize;1167 1168 return 0;1169}1170 1171static int rtl2832_sdr_try_fmt_sdr_cap(struct file *file, void *priv,1172 struct v4l2_format *f)1173{1174 struct rtl2832_sdr_dev *dev = video_drvdata(file);1175 struct platform_device *pdev = dev->pdev;1176 int i;1177 1178 dev_dbg(&pdev->dev, "pixelformat fourcc %4.4s\n",1179 (char *)&f->fmt.sdr.pixelformat);1180 1181 for (i = 0; i < dev->num_formats; i++) {1182 if (formats[i].pixelformat == f->fmt.sdr.pixelformat) {1183 f->fmt.sdr.buffersize = formats[i].buffersize;1184 return 0;1185 }1186 }1187 1188 f->fmt.sdr.pixelformat = formats[0].pixelformat;1189 f->fmt.sdr.buffersize = formats[0].buffersize;1190 1191 return 0;1192}1193 1194static const struct v4l2_ioctl_ops rtl2832_sdr_ioctl_ops = {1195 .vidioc_querycap = rtl2832_sdr_querycap,1196 1197 .vidioc_enum_fmt_sdr_cap = rtl2832_sdr_enum_fmt_sdr_cap,1198 .vidioc_g_fmt_sdr_cap = rtl2832_sdr_g_fmt_sdr_cap,1199 .vidioc_s_fmt_sdr_cap = rtl2832_sdr_s_fmt_sdr_cap,1200 .vidioc_try_fmt_sdr_cap = rtl2832_sdr_try_fmt_sdr_cap,1201 1202 .vidioc_reqbufs = vb2_ioctl_reqbufs,1203 .vidioc_create_bufs = vb2_ioctl_create_bufs,1204 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,1205 .vidioc_querybuf = vb2_ioctl_querybuf,1206 .vidioc_qbuf = vb2_ioctl_qbuf,1207 .vidioc_dqbuf = vb2_ioctl_dqbuf,1208 1209 .vidioc_streamon = vb2_ioctl_streamon,1210 .vidioc_streamoff = vb2_ioctl_streamoff,1211 1212 .vidioc_g_tuner = rtl2832_sdr_g_tuner,1213 .vidioc_s_tuner = rtl2832_sdr_s_tuner,1214 1215 .vidioc_enum_freq_bands = rtl2832_sdr_enum_freq_bands,1216 .vidioc_g_frequency = rtl2832_sdr_g_frequency,1217 .vidioc_s_frequency = rtl2832_sdr_s_frequency,1218 1219 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,1220 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,1221 .vidioc_log_status = v4l2_ctrl_log_status,1222};1223 1224static const struct v4l2_file_operations rtl2832_sdr_fops = {1225 .owner = THIS_MODULE,1226 .open = v4l2_fh_open,1227 .release = vb2_fop_release,1228 .read = vb2_fop_read,1229 .poll = vb2_fop_poll,1230 .mmap = vb2_fop_mmap,1231 .unlocked_ioctl = video_ioctl2,1232};1233 1234static struct video_device rtl2832_sdr_template = {1235 .name = "Realtek RTL2832 SDR",1236 .release = video_device_release_empty,1237 .fops = &rtl2832_sdr_fops,1238 .ioctl_ops = &rtl2832_sdr_ioctl_ops,1239 .device_caps = V4L2_CAP_SDR_CAPTURE | V4L2_CAP_STREAMING |1240 V4L2_CAP_READWRITE | V4L2_CAP_TUNER,1241};1242 1243static int rtl2832_sdr_s_ctrl(struct v4l2_ctrl *ctrl)1244{1245 struct rtl2832_sdr_dev *dev =1246 container_of(ctrl->handler, struct rtl2832_sdr_dev,1247 hdl);1248 struct platform_device *pdev = dev->pdev;1249 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;1250 struct dvb_frontend *fe = pdata->dvb_frontend;1251 struct dtv_frontend_properties *c = &fe->dtv_property_cache;1252 int ret;1253 1254 dev_dbg(&pdev->dev, "id=%d name=%s val=%d min=%lld max=%lld step=%lld\n",1255 ctrl->id, ctrl->name, ctrl->val, ctrl->minimum, ctrl->maximum,1256 ctrl->step);1257 1258 switch (ctrl->id) {1259 case V4L2_CID_RF_TUNER_BANDWIDTH_AUTO:1260 case V4L2_CID_RF_TUNER_BANDWIDTH:1261 /* TODO: these controls should be moved to tuner drivers */1262 if (dev->bandwidth_auto->val) {1263 /* Round towards the closest legal value */1264 s32 val = dev->f_adc + div_u64(dev->bandwidth->step, 2);1265 u32 offset;1266 1267 val = clamp_t(s32, val, dev->bandwidth->minimum,1268 dev->bandwidth->maximum);1269 offset = val - dev->bandwidth->minimum;1270 offset = dev->bandwidth->step *1271 div_u64(offset, dev->bandwidth->step);1272 dev->bandwidth->val = dev->bandwidth->minimum + offset;1273 }1274 c->bandwidth_hz = dev->bandwidth->val;1275 1276 if (!test_bit(POWER_ON, &dev->flags))1277 return 0;1278 1279 if (fe->ops.tuner_ops.set_params)1280 ret = fe->ops.tuner_ops.set_params(fe);1281 else1282 ret = 0;1283 break;1284 default:1285 ret = -EINVAL;1286 }1287 1288 return ret;1289}1290 1291static const struct v4l2_ctrl_ops rtl2832_sdr_ctrl_ops = {1292 .s_ctrl = rtl2832_sdr_s_ctrl,1293};1294 1295static void rtl2832_sdr_video_release(struct v4l2_device *v)1296{1297 struct rtl2832_sdr_dev *dev =1298 container_of(v, struct rtl2832_sdr_dev, v4l2_dev);1299 struct platform_device *pdev = dev->pdev;1300 1301 dev_dbg(&pdev->dev, "\n");1302 1303 v4l2_ctrl_handler_free(&dev->hdl);1304 v4l2_device_unregister(&dev->v4l2_dev);1305 kfree(dev);1306}1307 1308/* Platform driver interface */1309static int rtl2832_sdr_probe(struct platform_device *pdev)1310{1311 struct rtl2832_sdr_dev *dev;1312 struct rtl2832_sdr_platform_data *pdata = pdev->dev.platform_data;1313 const struct v4l2_ctrl_ops *ops = &rtl2832_sdr_ctrl_ops;1314 struct v4l2_subdev *subdev;1315 int ret;1316 1317 dev_dbg(&pdev->dev, "\n");1318 1319 if (!pdata) {1320 dev_err(&pdev->dev, "Cannot proceed without platform data\n");1321 ret = -EINVAL;1322 goto err;1323 }1324 if (!pdev->dev.parent->driver) {1325 dev_dbg(&pdev->dev, "No parent device\n");1326 ret = -EINVAL;1327 goto err;1328 }1329 /* try to refcount host drv since we are the consumer */1330 if (!try_module_get(pdev->dev.parent->driver->owner)) {1331 dev_err(&pdev->dev, "Refcount fail");1332 ret = -EINVAL;1333 goto err;1334 }1335 dev = kzalloc(sizeof(*dev), GFP_KERNEL);1336 if (dev == NULL) {1337 ret = -ENOMEM;1338 goto err_module_put;1339 }1340 1341 /* setup the state */1342 subdev = pdata->v4l2_subdev;1343 dev->v4l2_subdev = pdata->v4l2_subdev;1344 dev->pdev = pdev;1345 dev->regmap = pdata->regmap;1346 dev->udev = pdata->dvb_usb_device->udev;1347 dev->f_adc = bands_adc[0].rangelow;1348 dev->f_tuner = bands_fm[0].rangelow;1349 dev->pixelformat = formats[0].pixelformat;1350 dev->buffersize = formats[0].buffersize;1351 dev->num_formats = NUM_FORMATS;1352 if (!rtl2832_sdr_emulated_fmt)1353 dev->num_formats -= 1;1354 1355 mutex_init(&dev->v4l2_lock);1356 mutex_init(&dev->vb_queue_lock);1357 spin_lock_init(&dev->queued_bufs_lock);1358 INIT_LIST_HEAD(&dev->queued_bufs);1359 1360 /* Init videobuf2 queue structure */1361 dev->vb_queue.type = V4L2_BUF_TYPE_SDR_CAPTURE;1362 dev->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ;1363 dev->vb_queue.drv_priv = dev;1364 dev->vb_queue.buf_struct_size = sizeof(struct rtl2832_sdr_frame_buf);1365 dev->vb_queue.ops = &rtl2832_sdr_vb2_ops;1366 dev->vb_queue.mem_ops = &vb2_vmalloc_memops;1367 dev->vb_queue.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;1368 ret = vb2_queue_init(&dev->vb_queue);1369 if (ret) {1370 dev_err(&pdev->dev, "Could not initialize vb2 queue\n");1371 goto err_kfree;1372 }1373 1374 /* Register controls */1375 switch (pdata->tuner) {1376 case RTL2832_SDR_TUNER_E4000:1377 v4l2_ctrl_handler_init(&dev->hdl, 9);1378 if (subdev)1379 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler,1380 NULL, true);1381 break;1382 case RTL2832_SDR_TUNER_R820T:1383 case RTL2832_SDR_TUNER_R828D:1384 v4l2_ctrl_handler_init(&dev->hdl, 2);1385 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,1386 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,1387 0, 1, 1, 1);1388 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,1389 V4L2_CID_RF_TUNER_BANDWIDTH,1390 0, 8000000, 100000, 0);1391 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);1392 break;1393 case RTL2832_SDR_TUNER_FC0012:1394 case RTL2832_SDR_TUNER_FC0013:1395 v4l2_ctrl_handler_init(&dev->hdl, 2);1396 dev->bandwidth_auto = v4l2_ctrl_new_std(&dev->hdl, ops,1397 V4L2_CID_RF_TUNER_BANDWIDTH_AUTO,1398 0, 1, 1, 1);1399 dev->bandwidth = v4l2_ctrl_new_std(&dev->hdl, ops,1400 V4L2_CID_RF_TUNER_BANDWIDTH,1401 6000000, 8000000, 1000000,1402 6000000);1403 v4l2_ctrl_auto_cluster(2, &dev->bandwidth_auto, 0, false);1404 break;1405 case RTL2832_SDR_TUNER_FC2580:1406 v4l2_ctrl_handler_init(&dev->hdl, 2);1407 if (subdev)1408 v4l2_ctrl_add_handler(&dev->hdl, subdev->ctrl_handler,1409 NULL, true);1410 break;1411 default:1412 v4l2_ctrl_handler_init(&dev->hdl, 0);1413 dev_err(&pdev->dev, "Unsupported tuner\n");1414 ret = -ENODEV;1415 goto err_v4l2_ctrl_handler_free;1416 }1417 if (dev->hdl.error) {1418 ret = dev->hdl.error;1419 dev_err(&pdev->dev, "Could not initialize controls\n");1420 goto err_v4l2_ctrl_handler_free;1421 }1422 1423 /* Init video_device structure */1424 dev->vdev = rtl2832_sdr_template;1425 dev->vdev.queue = &dev->vb_queue;1426 dev->vdev.queue->lock = &dev->vb_queue_lock;1427 video_set_drvdata(&dev->vdev, dev);1428 1429 /* Register the v4l2_device structure */1430 dev->v4l2_dev.release = rtl2832_sdr_video_release;1431 ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);1432 if (ret) {1433 dev_err(&pdev->dev, "Failed to register v4l2-device %d\n", ret);1434 goto err_v4l2_ctrl_handler_free;1435 }1436 1437 dev->v4l2_dev.ctrl_handler = &dev->hdl;1438 dev->vdev.v4l2_dev = &dev->v4l2_dev;1439 dev->vdev.lock = &dev->v4l2_lock;1440 dev->vdev.vfl_dir = VFL_DIR_RX;1441 1442 ret = video_register_device(&dev->vdev, VFL_TYPE_SDR, -1);1443 if (ret) {1444 dev_err(&pdev->dev, "Failed to register as video device %d\n",1445 ret);1446 goto err_v4l2_device_unregister;1447 }1448 dev_info(&pdev->dev, "Registered as %s\n",1449 video_device_node_name(&dev->vdev));1450 dev_info(&pdev->dev, "Realtek RTL2832 SDR attached\n");1451 dev_notice(&pdev->dev,1452 "SDR API is still slightly experimental and functionality changes may follow\n");1453 platform_set_drvdata(pdev, dev);1454 return 0;1455err_v4l2_device_unregister:1456 v4l2_device_unregister(&dev->v4l2_dev);1457err_v4l2_ctrl_handler_free:1458 v4l2_ctrl_handler_free(&dev->hdl);1459err_kfree:1460 kfree(dev);1461err_module_put:1462 module_put(pdev->dev.parent->driver->owner);1463err:1464 return ret;1465}1466 1467static void rtl2832_sdr_remove(struct platform_device *pdev)1468{1469 struct rtl2832_sdr_dev *dev = platform_get_drvdata(pdev);1470 1471 dev_dbg(&pdev->dev, "\n");1472 1473 mutex_lock(&dev->vb_queue_lock);1474 mutex_lock(&dev->v4l2_lock);1475 /* No need to keep the urbs around after disconnection */1476 dev->udev = NULL;1477 v4l2_device_disconnect(&dev->v4l2_dev);1478 video_unregister_device(&dev->vdev);1479 mutex_unlock(&dev->v4l2_lock);1480 mutex_unlock(&dev->vb_queue_lock);1481 v4l2_device_put(&dev->v4l2_dev);1482 module_put(pdev->dev.parent->driver->owner);1483}1484 1485static struct platform_driver rtl2832_sdr_driver = {1486 .driver = {1487 .name = "rtl2832_sdr",1488 },1489 .probe = rtl2832_sdr_probe,1490 .remove_new = rtl2832_sdr_remove,1491};1492module_platform_driver(rtl2832_sdr_driver);1493 1494MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");1495MODULE_DESCRIPTION("Realtek RTL2832 SDR driver");1496MODULE_LICENSE("GPL");1497