| /* |
| * Mirics MSi3101 SDR Dongle driver |
| * |
| * Copyright (C) 2013 Antti Palosaari <crope@iki.fi> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * That driver is somehow based of pwc driver: |
| * (C) 1999-2004 Nemosoft Unv. |
| * (C) 2004-2006 Luc Saillard (luc@saillard.org) |
| * (C) 2011 Hans de Goede <hdegoede@redhat.com> |
| * |
| * Development tree of that driver will be on: |
| * http://git.linuxtv.org/anttip/media_tree.git/shortlog/refs/heads/mirics |
| * |
| * GNU Radio plugin "gr-kernel" for device usage will be on: |
| * http://git.linuxtv.org/anttip/gr-kernel.git |
| * |
| * TODO: |
| * Help is very highly welcome for these + all the others you could imagine: |
| * - split USB ADC interface and RF tuner to own drivers (msi2500 and msi001) |
| * - move controls to V4L2 API |
| * - use libv4l2 for stream format conversions |
| * - gr-kernel: switch to v4l2_mmap (current read eats a lot of cpu) |
| * - SDRSharp support |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/slab.h> |
| #include <linux/gcd.h> |
| #include <asm/div64.h> |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/v4l2-ctrls.h> |
| #include <media/v4l2-event.h> |
| #include <linux/usb.h> |
| #include <media/videobuf2-vmalloc.h> |
| |
| struct msi3101_gain { |
| u8 tot:7; |
| u8 baseband:6; |
| bool lna:1; |
| bool mixer:1; |
| }; |
| |
| /* 60 – 120 MHz band, lna 24dB, mixer 19dB */ |
| static const struct msi3101_gain msi3101_gain_lut_120[] = { |
| { 0, 0, 0, 0}, |
| { 1, 1, 0, 0}, |
| { 2, 2, 0, 0}, |
| { 3, 3, 0, 0}, |
| { 4, 4, 0, 0}, |
| { 5, 5, 0, 0}, |
| { 6, 6, 0, 0}, |
| { 7, 7, 0, 0}, |
| { 8, 8, 0, 0}, |
| { 9, 9, 0, 0}, |
| { 10, 10, 0, 0}, |
| { 11, 11, 0, 0}, |
| { 12, 12, 0, 0}, |
| { 13, 13, 0, 0}, |
| { 14, 14, 0, 0}, |
| { 15, 15, 0, 0}, |
| { 16, 16, 0, 0}, |
| { 17, 17, 0, 0}, |
| { 18, 18, 0, 0}, |
| { 19, 19, 0, 0}, |
| { 20, 20, 0, 0}, |
| { 21, 21, 0, 0}, |
| { 22, 22, 0, 0}, |
| { 23, 23, 0, 0}, |
| { 24, 24, 0, 0}, |
| { 25, 25, 0, 0}, |
| { 26, 26, 0, 0}, |
| { 27, 27, 0, 0}, |
| { 28, 28, 0, 0}, |
| { 29, 5, 1, 0}, |
| { 30, 6, 1, 0}, |
| { 31, 7, 1, 0}, |
| { 32, 8, 1, 0}, |
| { 33, 9, 1, 0}, |
| { 34, 10, 1, 0}, |
| { 35, 11, 1, 0}, |
| { 36, 12, 1, 0}, |
| { 37, 13, 1, 0}, |
| { 38, 14, 1, 0}, |
| { 39, 15, 1, 0}, |
| { 40, 16, 1, 0}, |
| { 41, 17, 1, 0}, |
| { 42, 18, 1, 0}, |
| { 43, 19, 1, 0}, |
| { 44, 20, 1, 0}, |
| { 45, 21, 1, 0}, |
| { 46, 22, 1, 0}, |
| { 47, 23, 1, 0}, |
| { 48, 24, 1, 0}, |
| { 49, 25, 1, 0}, |
| { 50, 26, 1, 0}, |
| { 51, 27, 1, 0}, |
| { 52, 28, 1, 0}, |
| { 53, 29, 1, 0}, |
| { 54, 30, 1, 0}, |
| { 55, 31, 1, 0}, |
| { 56, 32, 1, 0}, |
| { 57, 33, 1, 0}, |
| { 58, 34, 1, 0}, |
| { 59, 35, 1, 0}, |
| { 60, 36, 1, 0}, |
| { 61, 37, 1, 0}, |
| { 62, 38, 1, 0}, |
| { 63, 39, 1, 0}, |
| { 64, 40, 1, 0}, |
| { 65, 41, 1, 0}, |
| { 66, 42, 1, 0}, |
| { 67, 43, 1, 0}, |
| { 68, 44, 1, 0}, |
| { 69, 45, 1, 0}, |
| { 70, 46, 1, 0}, |
| { 71, 47, 1, 0}, |
| { 72, 48, 1, 0}, |
| { 73, 49, 1, 0}, |
| { 74, 50, 1, 0}, |
| { 75, 51, 1, 0}, |
| { 76, 52, 1, 0}, |
| { 77, 53, 1, 0}, |
| { 78, 54, 1, 0}, |
| { 79, 55, 1, 0}, |
| { 80, 56, 1, 0}, |
| { 81, 57, 1, 0}, |
| { 82, 58, 1, 0}, |
| { 83, 40, 1, 1}, |
| { 84, 41, 1, 1}, |
| { 85, 42, 1, 1}, |
| { 86, 43, 1, 1}, |
| { 87, 44, 1, 1}, |
| { 88, 45, 1, 1}, |
| { 89, 46, 1, 1}, |
| { 90, 47, 1, 1}, |
| { 91, 48, 1, 1}, |
| { 92, 49, 1, 1}, |
| { 93, 50, 1, 1}, |
| { 94, 51, 1, 1}, |
| { 95, 52, 1, 1}, |
| { 96, 53, 1, 1}, |
| { 97, 54, 1, 1}, |
| { 98, 55, 1, 1}, |
| { 99, 56, 1, 1}, |
| {100, 57, 1, 1}, |
| {101, 58, 1, 1}, |
| {102, 59, 1, 1}, |
| }; |
| |
| /* 120 – 245 MHz band, lna 24dB, mixer 19dB */ |
| static const struct msi3101_gain msi3101_gain_lut_245[] = { |
| { 0, 0, 0, 0}, |
| { 1, 1, 0, 0}, |
| { 2, 2, 0, 0}, |
| { 3, 3, 0, 0}, |
| { 4, 4, 0, 0}, |
| { 5, 5, 0, 0}, |
| { 6, 6, 0, 0}, |
| { 7, 7, 0, 0}, |
| { 8, 8, 0, 0}, |
| { 9, 9, 0, 0}, |
| { 10, 10, 0, 0}, |
| { 11, 11, 0, 0}, |
| { 12, 12, 0, 0}, |
| { 13, 13, 0, 0}, |
| { 14, 14, 0, 0}, |
| { 15, 15, 0, 0}, |
| { 16, 16, 0, 0}, |
| { 17, 17, 0, 0}, |
| { 18, 18, 0, 0}, |
| { 19, 19, 0, 0}, |
| { 20, 20, 0, 0}, |
| { 21, 21, 0, 0}, |
| { 22, 22, 0, 0}, |
| { 23, 23, 0, 0}, |
| { 24, 24, 0, 0}, |
| { 25, 25, 0, 0}, |
| { 26, 26, 0, 0}, |
| { 27, 27, 0, 0}, |
| { 28, 28, 0, 0}, |
| { 29, 5, 1, 0}, |
| { 30, 6, 1, 0}, |
| { 31, 7, 1, 0}, |
| { 32, 8, 1, 0}, |
| { 33, 9, 1, 0}, |
| { 34, 10, 1, 0}, |
| { 35, 11, 1, 0}, |
| { 36, 12, 1, 0}, |
| { 37, 13, 1, 0}, |
| { 38, 14, 1, 0}, |
| { 39, 15, 1, 0}, |
| { 40, 16, 1, 0}, |
| { 41, 17, 1, 0}, |
| { 42, 18, 1, 0}, |
| { 43, 19, 1, 0}, |
| { 44, 20, 1, 0}, |
| { 45, 21, 1, 0}, |
| { 46, 22, 1, 0}, |
| { 47, 23, 1, 0}, |
| { 48, 24, 1, 0}, |
| { 49, 25, 1, 0}, |
| { 50, 26, 1, 0}, |
| { 51, 27, 1, 0}, |
| { 52, 28, 1, 0}, |
| { 53, 29, 1, 0}, |
| { 54, 30, 1, 0}, |
| { 55, 31, 1, 0}, |
| { 56, 32, 1, 0}, |
| { 57, 33, 1, 0}, |
| { 58, 34, 1, 0}, |
| { 59, 35, 1, 0}, |
| { 60, 36, 1, 0}, |
| { 61, 37, 1, 0}, |
| { 62, 38, 1, 0}, |
| { 63, 39, 1, 0}, |
| { 64, 40, 1, 0}, |
| { 65, 41, 1, 0}, |
| { 66, 42, 1, 0}, |
| { 67, 43, 1, 0}, |
| { 68, 44, 1, 0}, |
| { 69, 45, 1, 0}, |
| { 70, 46, 1, 0}, |
| { 71, 47, 1, 0}, |
| { 72, 48, 1, 0}, |
| { 73, 49, 1, 0}, |
| { 74, 50, 1, 0}, |
| { 75, 51, 1, 0}, |
| { 76, 52, 1, 0}, |
| { 77, 53, 1, 0}, |
| { 78, 54, 1, 0}, |
| { 79, 55, 1, 0}, |
| { 80, 56, 1, 0}, |
| { 81, 57, 1, 0}, |
| { 82, 58, 1, 0}, |
| { 83, 40, 1, 1}, |
| { 84, 41, 1, 1}, |
| { 85, 42, 1, 1}, |
| { 86, 43, 1, 1}, |
| { 87, 44, 1, 1}, |
| { 88, 45, 1, 1}, |
| { 89, 46, 1, 1}, |
| { 90, 47, 1, 1}, |
| { 91, 48, 1, 1}, |
| { 92, 49, 1, 1}, |
| { 93, 50, 1, 1}, |
| { 94, 51, 1, 1}, |
| { 95, 52, 1, 1}, |
| { 96, 53, 1, 1}, |
| { 97, 54, 1, 1}, |
| { 98, 55, 1, 1}, |
| { 99, 56, 1, 1}, |
| {100, 57, 1, 1}, |
| {101, 58, 1, 1}, |
| {102, 59, 1, 1}, |
| }; |
| |
| /* 420 – 1000 MHz band, lna 7dB, mixer 19dB */ |
| static const struct msi3101_gain msi3101_gain_lut_1000[] = { |
| { 0, 0, 0, 0}, |
| { 1, 1, 0, 0}, |
| { 2, 2, 0, 0}, |
| { 3, 3, 0, 0}, |
| { 4, 4, 0, 0}, |
| { 5, 5, 0, 0}, |
| { 6, 6, 0, 0}, |
| { 7, 7, 0, 0}, |
| { 8, 8, 0, 0}, |
| { 9, 9, 0, 0}, |
| { 10, 10, 0, 0}, |
| { 11, 11, 0, 0}, |
| { 12, 5, 1, 0}, |
| { 13, 6, 1, 0}, |
| { 14, 7, 1, 0}, |
| { 15, 8, 1, 0}, |
| { 16, 9, 1, 0}, |
| { 17, 10, 1, 0}, |
| { 18, 11, 1, 0}, |
| { 19, 12, 1, 0}, |
| { 20, 13, 1, 0}, |
| { 21, 14, 1, 0}, |
| { 22, 15, 1, 0}, |
| { 23, 16, 1, 0}, |
| { 24, 17, 1, 0}, |
| { 25, 18, 1, 0}, |
| { 26, 19, 1, 0}, |
| { 27, 20, 1, 0}, |
| { 28, 21, 1, 0}, |
| { 29, 22, 1, 0}, |
| { 30, 23, 1, 0}, |
| { 31, 24, 1, 0}, |
| { 32, 25, 1, 0}, |
| { 33, 26, 1, 0}, |
| { 34, 27, 1, 0}, |
| { 35, 28, 1, 0}, |
| { 36, 29, 1, 0}, |
| { 37, 30, 1, 0}, |
| { 38, 31, 1, 0}, |
| { 39, 32, 1, 0}, |
| { 40, 33, 1, 0}, |
| { 41, 34, 1, 0}, |
| { 42, 35, 1, 0}, |
| { 43, 36, 1, 0}, |
| { 44, 37, 1, 0}, |
| { 45, 38, 1, 0}, |
| { 46, 39, 1, 0}, |
| { 47, 40, 1, 0}, |
| { 48, 41, 1, 0}, |
| { 49, 42, 1, 0}, |
| { 50, 43, 1, 0}, |
| { 51, 44, 1, 0}, |
| { 52, 45, 1, 0}, |
| { 53, 46, 1, 0}, |
| { 54, 47, 1, 0}, |
| { 55, 48, 1, 0}, |
| { 56, 49, 1, 0}, |
| { 57, 50, 1, 0}, |
| { 58, 51, 1, 0}, |
| { 59, 52, 1, 0}, |
| { 60, 53, 1, 0}, |
| { 61, 54, 1, 0}, |
| { 62, 55, 1, 0}, |
| { 63, 56, 1, 0}, |
| { 64, 57, 1, 0}, |
| { 65, 58, 1, 0}, |
| { 66, 40, 1, 1}, |
| { 67, 41, 1, 1}, |
| { 68, 42, 1, 1}, |
| { 69, 43, 1, 1}, |
| { 70, 44, 1, 1}, |
| { 71, 45, 1, 1}, |
| { 72, 46, 1, 1}, |
| { 73, 47, 1, 1}, |
| { 74, 48, 1, 1}, |
| { 75, 49, 1, 1}, |
| { 76, 50, 1, 1}, |
| { 77, 51, 1, 1}, |
| { 78, 52, 1, 1}, |
| { 79, 53, 1, 1}, |
| { 80, 54, 1, 1}, |
| { 81, 55, 1, 1}, |
| { 82, 56, 1, 1}, |
| { 83, 57, 1, 1}, |
| { 84, 58, 1, 1}, |
| { 85, 59, 1, 1}, |
| }; |
| |
| /* |
| * iConfiguration 0 |
| * bInterfaceNumber 0 |
| * bAlternateSetting 1 |
| * bNumEndpoints 1 |
| * bEndpointAddress 0x81 EP 1 IN |
| * bmAttributes 1 |
| * Transfer Type Isochronous |
| * wMaxPacketSize 0x1400 3x 1024 bytes |
| * bInterval 1 |
| */ |
| #define MAX_ISO_BUFS (8) |
| #define ISO_FRAMES_PER_DESC (8) |
| #define ISO_MAX_FRAME_SIZE (3 * 1024) |
| #define ISO_BUFFER_SIZE (ISO_FRAMES_PER_DESC * ISO_MAX_FRAME_SIZE) |
| #define MAX_ISOC_ERRORS 20 |
| |
| /* TODO: These should be moved to V4L2 API */ |
| #define MSI3101_CID_SAMPLING_MODE ((V4L2_CID_USER_BASE | 0xf000) + 0) |
| #define MSI3101_CID_SAMPLING_RATE ((V4L2_CID_USER_BASE | 0xf000) + 1) |
| #define MSI3101_CID_SAMPLING_RESOLUTION ((V4L2_CID_USER_BASE | 0xf000) + 2) |
| #define MSI3101_CID_TUNER_RF ((V4L2_CID_USER_BASE | 0xf000) + 10) |
| #define MSI3101_CID_TUNER_BW ((V4L2_CID_USER_BASE | 0xf000) + 11) |
| #define MSI3101_CID_TUNER_IF ((V4L2_CID_USER_BASE | 0xf000) + 12) |
| #define MSI3101_CID_TUNER_GAIN ((V4L2_CID_USER_BASE | 0xf000) + 13) |
| |
| /* intermediate buffers with raw data from the USB device */ |
| struct msi3101_frame_buf { |
| struct vb2_buffer vb; /* common v4l buffer stuff -- must be first */ |
| struct list_head list; |
| }; |
| |
| struct msi3101_state { |
| struct video_device vdev; |
| struct v4l2_device v4l2_dev; |
| |
| /* videobuf2 queue and queued buffers list */ |
| struct vb2_queue vb_queue; |
| struct list_head queued_bufs; |
| spinlock_t queued_bufs_lock; /* Protects queued_bufs */ |
| |
| /* Note if taking both locks v4l2_lock must always be locked first! */ |
| struct mutex v4l2_lock; /* Protects everything else */ |
| struct mutex vb_queue_lock; /* Protects vb_queue and capt_file */ |
| |
| /* Pointer to our usb_device, will be NULL after unplug */ |
| struct usb_device *udev; /* Both mutexes most be hold when setting! */ |
| |
| unsigned int isoc_errors; /* number of contiguous ISOC errors */ |
| unsigned int vb_full; /* vb is full and packets dropped */ |
| |
| struct urb *urbs[MAX_ISO_BUFS]; |
| int (*convert_stream) (struct msi3101_state *s, u32 *dst, u8 *src, |
| unsigned int src_len); |
| |
| /* Controls */ |
| struct v4l2_ctrl_handler ctrl_handler; |
| struct v4l2_ctrl *ctrl_sampling_rate; |
| struct v4l2_ctrl *ctrl_tuner_rf; |
| struct v4l2_ctrl *ctrl_tuner_bw; |
| struct v4l2_ctrl *ctrl_tuner_if; |
| struct v4l2_ctrl *ctrl_tuner_gain; |
| |
| u32 next_sample; /* for track lost packets */ |
| u32 sample; /* for sample rate calc */ |
| unsigned long jiffies; |
| unsigned int sample_ctrl_bit[4]; |
| }; |
| |
| /* Private functions */ |
| static struct msi3101_frame_buf *msi3101_get_next_fill_buf( |
| struct msi3101_state *s) |
| { |
| unsigned long flags = 0; |
| struct msi3101_frame_buf *buf = NULL; |
| |
| spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| if (list_empty(&s->queued_bufs)) |
| goto leave; |
| |
| buf = list_entry(s->queued_bufs.next, struct msi3101_frame_buf, list); |
| list_del(&buf->list); |
| leave: |
| spin_unlock_irqrestore(&s->queued_bufs_lock, flags); |
| return buf; |
| } |
| |
| /* |
| * +=========================================================================== |
| * | 00-1023 | USB packet type '384' |
| * +=========================================================================== |
| * | 00- 03 | sequence number of first sample in that USB packet |
| * +--------------------------------------------------------------------------- |
| * | 04- 15 | garbage |
| * +--------------------------------------------------------------------------- |
| * | 16- 175 | samples |
| * +--------------------------------------------------------------------------- |
| * | 176- 179 | control bits for previous samples |
| * +--------------------------------------------------------------------------- |
| * | 180- 339 | samples |
| * +--------------------------------------------------------------------------- |
| * | 340- 343 | control bits for previous samples |
| * +--------------------------------------------------------------------------- |
| * | 344- 503 | samples |
| * +--------------------------------------------------------------------------- |
| * | 504- 507 | control bits for previous samples |
| * +--------------------------------------------------------------------------- |
| * | 508- 667 | samples |
| * +--------------------------------------------------------------------------- |
| * | 668- 671 | control bits for previous samples |
| * +--------------------------------------------------------------------------- |
| * | 672- 831 | samples |
| * +--------------------------------------------------------------------------- |
| * | 832- 835 | control bits for previous samples |
| * +--------------------------------------------------------------------------- |
| * | 836- 995 | samples |
| * +--------------------------------------------------------------------------- |
| * | 996- 999 | control bits for previous samples |
| * +--------------------------------------------------------------------------- |
| * | 1000-1023 | garbage |
| * +--------------------------------------------------------------------------- |
| * |
| * Bytes 4 - 7 could have some meaning? |
| * |
| * Control bits for previous samples is 32-bit field, containing 16 x 2-bit |
| * numbers. This results one 2-bit number for 8 samples. It is likely used for |
| * for bit shifting sample by given bits, increasing actual sampling resolution. |
| * Number 2 (0b10) was never seen. |
| * |
| * 6 * 16 * 2 * 4 = 768 samples. 768 * 4 = 3072 bytes |
| */ |
| |
| /* |
| * Integer to 32-bit IEEE floating point representation routine is taken |
| * from Radeon R600 driver (drivers/gpu/drm/radeon/r600_blit_kms.c). |
| * |
| * TODO: Currently we do conversion here in Kernel, but in future that will |
| * be moved to the libv4l2 library as video format conversions are. |
| */ |
| #define I2F_FRAC_BITS 23 |
| #define I2F_MASK ((1 << I2F_FRAC_BITS) - 1) |
| |
| /* |
| * Converts signed 8-bit integer into 32-bit IEEE floating point |
| * representation. |
| */ |
| static u32 msi3101_convert_sample_504(struct msi3101_state *s, u16 x) |
| { |
| u32 msb, exponent, fraction, sign; |
| |
| /* Zero is special */ |
| if (!x) |
| return 0; |
| |
| /* Negative / positive value */ |
| if (x & (1 << 7)) { |
| x = -x; |
| x &= 0x7f; /* result is 7 bit ... + sign */ |
| sign = 1 << 31; |
| } else { |
| sign = 0 << 31; |
| } |
| |
| /* Get location of the most significant bit */ |
| msb = __fls(x); |
| |
| fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK; |
| exponent = (127 + msb) << I2F_FRAC_BITS; |
| |
| return (fraction + exponent) | sign; |
| } |
| |
| static int msi3101_convert_stream_504(struct msi3101_state *s, u32 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, j, i_max, dst_len = 0; |
| u16 sample[2]; |
| u32 sample_num[3]; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); |
| |
| src += 16; |
| for (j = 0; j < 1008; j += 2) { |
| sample[0] = src[j + 0]; |
| sample[1] = src[j + 1]; |
| |
| *dst++ = msi3101_convert_sample_504(s, sample[0]); |
| *dst++ = msi3101_convert_sample_504(s, sample[1]); |
| } |
| /* 504 x I+Q 32bit float samples */ |
| dst_len += 504 * 2 * 4; |
| src += 1008; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { |
| unsigned long jiffies_now = jiffies; |
| unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies = jiffies_now; |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", |
| src_len, samples, msecs, |
| samples * 1000UL / msecs); |
| } |
| |
| /* next sample (sample = sample + i * 504) */ |
| s->next_sample = sample_num[i_max - 1] + 504; |
| |
| return dst_len; |
| } |
| |
| /* |
| * Converts signed ~10+2-bit integer into 32-bit IEEE floating point |
| * representation. |
| */ |
| static u32 msi3101_convert_sample_384(struct msi3101_state *s, u16 x, int shift) |
| { |
| u32 msb, exponent, fraction, sign; |
| s->sample_ctrl_bit[shift]++; |
| |
| /* Zero is special */ |
| if (!x) |
| return 0; |
| |
| if (shift == 3) |
| shift = 2; |
| |
| /* Convert 10-bit two's complement to 12-bit */ |
| if (x & (1 << 9)) { |
| x |= ~0U << 10; /* set all the rest bits to one */ |
| x <<= shift; |
| x = -x; |
| x &= 0x7ff; /* result is 11 bit ... + sign */ |
| sign = 1 << 31; |
| } else { |
| x <<= shift; |
| sign = 0 << 31; |
| } |
| |
| /* Get location of the most significant bit */ |
| msb = __fls(x); |
| |
| fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK; |
| exponent = (127 + msb) << I2F_FRAC_BITS; |
| |
| return (fraction + exponent) | sign; |
| } |
| |
| static int msi3101_convert_stream_384(struct msi3101_state *s, u32 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, j, k, l, i_max, dst_len = 0; |
| u16 sample[4]; |
| u32 bits; |
| u32 sample_num[3]; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%*ph %*ph\n", 12, &src[4], 24, &src[1000]); |
| |
| src += 16; |
| for (j = 0; j < 6; j++) { |
| bits = src[160 + 3] << 24 | src[160 + 2] << 16 | src[160 + 1] << 8 | src[160 + 0] << 0; |
| for (k = 0; k < 16; k++) { |
| for (l = 0; l < 10; l += 5) { |
| sample[0] = (src[l + 0] & 0xff) >> 0 | (src[l + 1] & 0x03) << 8; |
| sample[1] = (src[l + 1] & 0xfc) >> 2 | (src[l + 2] & 0x0f) << 6; |
| sample[2] = (src[l + 2] & 0xf0) >> 4 | (src[l + 3] & 0x3f) << 4; |
| sample[3] = (src[l + 3] & 0xc0) >> 6 | (src[l + 4] & 0xff) << 2; |
| |
| *dst++ = msi3101_convert_sample_384(s, sample[0], (bits >> (2 * k)) & 0x3); |
| *dst++ = msi3101_convert_sample_384(s, sample[1], (bits >> (2 * k)) & 0x3); |
| *dst++ = msi3101_convert_sample_384(s, sample[2], (bits >> (2 * k)) & 0x3); |
| *dst++ = msi3101_convert_sample_384(s, sample[3], (bits >> (2 * k)) & 0x3); |
| } |
| src += 10; |
| } |
| dev_dbg_ratelimited(&s->udev->dev, |
| "sample control bits %08x\n", bits); |
| src += 4; |
| } |
| /* 384 x I+Q 32bit float samples */ |
| dst_len += 384 * 2 * 4; |
| src += 24; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { |
| unsigned long jiffies_now = jiffies; |
| unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies = jiffies_now; |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu bits=%d.%d.%d.%d\n", |
| src_len, samples, msecs, |
| samples * 1000UL / msecs, |
| s->sample_ctrl_bit[0], s->sample_ctrl_bit[1], |
| s->sample_ctrl_bit[2], s->sample_ctrl_bit[3]); |
| } |
| |
| /* next sample (sample = sample + i * 384) */ |
| s->next_sample = sample_num[i_max - 1] + 384; |
| |
| return dst_len; |
| } |
| |
| /* |
| * Converts signed 12-bit integer into 32-bit IEEE floating point |
| * representation. |
| */ |
| static u32 msi3101_convert_sample_336(struct msi3101_state *s, u16 x) |
| { |
| u32 msb, exponent, fraction, sign; |
| |
| /* Zero is special */ |
| if (!x) |
| return 0; |
| |
| /* Negative / positive value */ |
| if (x & (1 << 11)) { |
| x = -x; |
| x &= 0x7ff; /* result is 11 bit ... + sign */ |
| sign = 1 << 31; |
| } else { |
| sign = 0 << 31; |
| } |
| |
| /* Get location of the most significant bit */ |
| msb = __fls(x); |
| |
| fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK; |
| exponent = (127 + msb) << I2F_FRAC_BITS; |
| |
| return (fraction + exponent) | sign; |
| } |
| |
| static int msi3101_convert_stream_336(struct msi3101_state *s, u32 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, j, i_max, dst_len = 0; |
| u16 sample[2]; |
| u32 sample_num[3]; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); |
| |
| src += 16; |
| for (j = 0; j < 1008; j += 3) { |
| sample[0] = (src[j + 0] & 0xff) >> 0 | (src[j + 1] & 0x0f) << 8; |
| sample[1] = (src[j + 1] & 0xf0) >> 4 | (src[j + 2] & 0xff) << 4; |
| |
| *dst++ = msi3101_convert_sample_336(s, sample[0]); |
| *dst++ = msi3101_convert_sample_336(s, sample[1]); |
| } |
| /* 336 x I+Q 32bit float samples */ |
| dst_len += 336 * 2 * 4; |
| src += 1008; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { |
| unsigned long jiffies_now = jiffies; |
| unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies = jiffies_now; |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", |
| src_len, samples, msecs, |
| samples * 1000UL / msecs); |
| } |
| |
| /* next sample (sample = sample + i * 336) */ |
| s->next_sample = sample_num[i_max - 1] + 336; |
| |
| return dst_len; |
| } |
| |
| /* |
| * Converts signed 14-bit integer into 32-bit IEEE floating point |
| * representation. |
| */ |
| static u32 msi3101_convert_sample_252(struct msi3101_state *s, u16 x) |
| { |
| u32 msb, exponent, fraction, sign; |
| |
| /* Zero is special */ |
| if (!x) |
| return 0; |
| |
| /* Negative / positive value */ |
| if (x & (1 << 13)) { |
| x = -x; |
| x &= 0x1fff; /* result is 13 bit ... + sign */ |
| sign = 1 << 31; |
| } else { |
| sign = 0 << 31; |
| } |
| |
| /* Get location of the most significant bit */ |
| msb = __fls(x); |
| |
| fraction = ror32(x, (msb - I2F_FRAC_BITS) & 0x1f) & I2F_MASK; |
| exponent = (127 + msb) << I2F_FRAC_BITS; |
| |
| return (fraction + exponent) | sign; |
| } |
| |
| static int msi3101_convert_stream_252(struct msi3101_state *s, u32 *dst, |
| u8 *src, unsigned int src_len) |
| { |
| int i, j, i_max, dst_len = 0; |
| u16 sample[2]; |
| u32 sample_num[3]; |
| |
| /* There could be 1-3 1024 bytes URB frames */ |
| i_max = src_len / 1024; |
| |
| for (i = 0; i < i_max; i++) { |
| sample_num[i] = src[3] << 24 | src[2] << 16 | src[1] << 8 | src[0] << 0; |
| if (i == 0 && s->next_sample != sample_num[0]) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "%d samples lost, %d %08x:%08x\n", |
| sample_num[0] - s->next_sample, |
| src_len, s->next_sample, sample_num[0]); |
| } |
| |
| /* |
| * Dump all unknown 'garbage' data - maybe we will discover |
| * someday if there is something rational... |
| */ |
| dev_dbg_ratelimited(&s->udev->dev, "%*ph\n", 12, &src[4]); |
| |
| src += 16; |
| for (j = 0; j < 1008; j += 4) { |
| sample[0] = src[j + 0] >> 0 | src[j + 1] << 8; |
| sample[1] = src[j + 2] >> 0 | src[j + 3] << 8; |
| |
| *dst++ = msi3101_convert_sample_252(s, sample[0]); |
| *dst++ = msi3101_convert_sample_252(s, sample[1]); |
| } |
| /* 252 x I+Q 32bit float samples */ |
| dst_len += 252 * 2 * 4; |
| src += 1008; |
| } |
| |
| /* calculate samping rate and output it in 10 seconds intervals */ |
| if ((s->jiffies + msecs_to_jiffies(10000)) <= jiffies) { |
| unsigned long jiffies_now = jiffies; |
| unsigned long msecs = jiffies_to_msecs(jiffies_now) - jiffies_to_msecs(s->jiffies); |
| unsigned int samples = sample_num[i_max - 1] - s->sample; |
| s->jiffies = jiffies_now; |
| s->sample = sample_num[i_max - 1]; |
| dev_dbg(&s->udev->dev, |
| "slen=%d samples=%u msecs=%lu sampling rate=%lu\n", |
| src_len, samples, msecs, |
| samples * 1000UL / msecs); |
| } |
| |
| /* next sample (sample = sample + i * 252) */ |
| s->next_sample = sample_num[i_max - 1] + 252; |
| |
| return dst_len; |
| } |
| |
| /* |
| * This gets called for the Isochronous pipe (stream). This is done in interrupt |
| * time, so it has to be fast, not crash, and not stall. Neat. |
| */ |
| static void msi3101_isoc_handler(struct urb *urb) |
| { |
| struct msi3101_state *s = (struct msi3101_state *)urb->context; |
| int i, flen, fstatus; |
| unsigned char *iso_buf = NULL; |
| struct msi3101_frame_buf *fbuf; |
| |
| if (urb->status == -ENOENT || urb->status == -ECONNRESET || |
| urb->status == -ESHUTDOWN) { |
| dev_dbg(&s->udev->dev, "URB (%p) unlinked %ssynchronuously\n", |
| urb, urb->status == -ENOENT ? "" : "a"); |
| return; |
| } |
| |
| if (urb->status != 0) { |
| dev_dbg(&s->udev->dev, |
| "msi3101_isoc_handler() called with status %d\n", |
| urb->status); |
| /* Give up after a number of contiguous errors */ |
| if (++s->isoc_errors > MAX_ISOC_ERRORS) |
| dev_dbg(&s->udev->dev, |
| "Too many ISOC errors, bailing out\n"); |
| goto handler_end; |
| } else { |
| /* Reset ISOC error counter. We did get here, after all. */ |
| s->isoc_errors = 0; |
| } |
| |
| /* Compact data */ |
| for (i = 0; i < urb->number_of_packets; i++) { |
| void *ptr; |
| |
| /* Check frame error */ |
| fstatus = urb->iso_frame_desc[i].status; |
| if (fstatus) { |
| dev_dbg_ratelimited(&s->udev->dev, |
| "frame=%d/%d has error %d skipping\n", |
| i, urb->number_of_packets, fstatus); |
| goto skip; |
| } |
| |
| /* Check if that frame contains data */ |
| flen = urb->iso_frame_desc[i].actual_length; |
| if (flen == 0) |
| goto skip; |
| |
| iso_buf = urb->transfer_buffer + urb->iso_frame_desc[i].offset; |
| |
| /* Get free framebuffer */ |
| fbuf = msi3101_get_next_fill_buf(s); |
| if (fbuf == NULL) { |
| s->vb_full++; |
| dev_dbg_ratelimited(&s->udev->dev, |
| "videobuf is full, %d packets dropped\n", |
| s->vb_full); |
| goto skip; |
| } |
| |
| /* fill framebuffer */ |
| ptr = vb2_plane_vaddr(&fbuf->vb, 0); |
| flen = s->convert_stream(s, ptr, iso_buf, flen); |
| vb2_set_plane_payload(&fbuf->vb, 0, flen); |
| vb2_buffer_done(&fbuf->vb, VB2_BUF_STATE_DONE); |
| skip: |
| ; |
| } |
| |
| handler_end: |
| i = usb_submit_urb(urb, GFP_ATOMIC); |
| if (i != 0) |
| dev_dbg(&s->udev->dev, |
| "Error (%d) re-submitting urb in msi3101_isoc_handler\n", |
| i); |
| } |
| |
| static void msi3101_iso_stop(struct msi3101_state *s) |
| { |
| int i; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| /* Unlinking ISOC buffers one by one */ |
| for (i = 0; i < MAX_ISO_BUFS; i++) { |
| if (s->urbs[i]) { |
| dev_dbg(&s->udev->dev, "Unlinking URB %p\n", |
| s->urbs[i]); |
| usb_kill_urb(s->urbs[i]); |
| } |
| } |
| } |
| |
| static void msi3101_iso_free(struct msi3101_state *s) |
| { |
| int i; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| /* Freeing ISOC buffers one by one */ |
| for (i = 0; i < MAX_ISO_BUFS; i++) { |
| if (s->urbs[i]) { |
| dev_dbg(&s->udev->dev, "Freeing URB\n"); |
| if (s->urbs[i]->transfer_buffer) { |
| usb_free_coherent(s->udev, |
| s->urbs[i]->transfer_buffer_length, |
| s->urbs[i]->transfer_buffer, |
| s->urbs[i]->transfer_dma); |
| } |
| usb_free_urb(s->urbs[i]); |
| s->urbs[i] = NULL; |
| } |
| } |
| } |
| |
| /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ |
| static void msi3101_isoc_cleanup(struct msi3101_state *s) |
| { |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| msi3101_iso_stop(s); |
| msi3101_iso_free(s); |
| } |
| |
| /* Both v4l2_lock and vb_queue_lock should be locked when calling this */ |
| static int msi3101_isoc_init(struct msi3101_state *s) |
| { |
| struct usb_device *udev; |
| struct urb *urb; |
| int i, j, ret; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| s->isoc_errors = 0; |
| udev = s->udev; |
| |
| ret = usb_set_interface(s->udev, 0, 1); |
| if (ret < 0) |
| return ret; |
| |
| /* Allocate and init Isochronuous urbs */ |
| for (i = 0; i < MAX_ISO_BUFS; i++) { |
| urb = usb_alloc_urb(ISO_FRAMES_PER_DESC, GFP_KERNEL); |
| if (urb == NULL) { |
| dev_err(&s->udev->dev, |
| "Failed to allocate urb %d\n", i); |
| msi3101_isoc_cleanup(s); |
| return -ENOMEM; |
| } |
| s->urbs[i] = urb; |
| dev_dbg(&s->udev->dev, "Allocated URB at 0x%p\n", urb); |
| |
| urb->interval = 1; |
| urb->dev = udev; |
| urb->pipe = usb_rcvisocpipe(udev, 0x81); |
| urb->transfer_flags = URB_ISO_ASAP | URB_NO_TRANSFER_DMA_MAP; |
| urb->transfer_buffer = usb_alloc_coherent(udev, ISO_BUFFER_SIZE, |
| GFP_KERNEL, &urb->transfer_dma); |
| if (urb->transfer_buffer == NULL) { |
| dev_err(&s->udev->dev, |
| "Failed to allocate urb buffer %d\n", |
| i); |
| msi3101_isoc_cleanup(s); |
| return -ENOMEM; |
| } |
| urb->transfer_buffer_length = ISO_BUFFER_SIZE; |
| urb->complete = msi3101_isoc_handler; |
| urb->context = s; |
| urb->start_frame = 0; |
| urb->number_of_packets = ISO_FRAMES_PER_DESC; |
| for (j = 0; j < ISO_FRAMES_PER_DESC; j++) { |
| urb->iso_frame_desc[j].offset = j * ISO_MAX_FRAME_SIZE; |
| urb->iso_frame_desc[j].length = ISO_MAX_FRAME_SIZE; |
| } |
| } |
| |
| /* link */ |
| for (i = 0; i < MAX_ISO_BUFS; i++) { |
| ret = usb_submit_urb(s->urbs[i], GFP_KERNEL); |
| if (ret) { |
| dev_err(&s->udev->dev, |
| "isoc_init() submit_urb %d failed with error %d\n", |
| i, ret); |
| msi3101_isoc_cleanup(s); |
| return ret; |
| } |
| dev_dbg(&s->udev->dev, "URB 0x%p submitted.\n", s->urbs[i]); |
| } |
| |
| /* All is done... */ |
| return 0; |
| } |
| |
| /* Must be called with vb_queue_lock hold */ |
| static void msi3101_cleanup_queued_bufs(struct msi3101_state *s) |
| { |
| unsigned long flags = 0; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| while (!list_empty(&s->queued_bufs)) { |
| struct msi3101_frame_buf *buf; |
| |
| buf = list_entry(s->queued_bufs.next, struct msi3101_frame_buf, |
| list); |
| list_del(&buf->list); |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| } |
| spin_unlock_irqrestore(&s->queued_bufs_lock, flags); |
| } |
| |
| /* The user yanked out the cable... */ |
| static void msi3101_disconnect(struct usb_interface *intf) |
| { |
| struct v4l2_device *v = usb_get_intfdata(intf); |
| struct msi3101_state *s = |
| container_of(v, struct msi3101_state, v4l2_dev); |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| mutex_lock(&s->vb_queue_lock); |
| mutex_lock(&s->v4l2_lock); |
| /* No need to keep the urbs around after disconnection */ |
| s->udev = NULL; |
| |
| v4l2_device_disconnect(&s->v4l2_dev); |
| video_unregister_device(&s->vdev); |
| mutex_unlock(&s->v4l2_lock); |
| mutex_unlock(&s->vb_queue_lock); |
| |
| v4l2_device_put(&s->v4l2_dev); |
| } |
| |
| static int msi3101_querycap(struct file *file, void *fh, |
| struct v4l2_capability *cap) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| strlcpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver)); |
| strlcpy(cap->card, s->vdev.name, sizeof(cap->card)); |
| usb_make_path(s->udev, cap->bus_info, sizeof(cap->bus_info)); |
| cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | |
| V4L2_CAP_READWRITE; |
| cap->device_caps = V4L2_CAP_TUNER; |
| cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
| return 0; |
| } |
| |
| |
| /* Videobuf2 operations */ |
| static int msi3101_queue_setup(struct vb2_queue *vq, |
| const struct v4l2_format *fmt, unsigned int *nbuffers, |
| unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vq); |
| dev_dbg(&s->udev->dev, "%s: *nbuffers=%d\n", __func__, *nbuffers); |
| |
| /* Absolute min and max number of buffers available for mmap() */ |
| *nbuffers = 32; |
| *nplanes = 1; |
| /* |
| * 3, wMaxPacketSize 3x 1024 bytes |
| * 504, max IQ sample pairs per 1024 frame |
| * 2, two samples, I and Q |
| * 4, 32-bit float |
| */ |
| sizes[0] = PAGE_ALIGN(3 * 504 * 2 * 4); /* = 12096 */ |
| dev_dbg(&s->udev->dev, "%s: nbuffers=%d sizes[0]=%d\n", |
| __func__, *nbuffers, sizes[0]); |
| return 0; |
| } |
| |
| static int msi3101_buf_prepare(struct vb2_buffer *vb) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); |
| |
| /* Don't allow queing new buffers after device disconnection */ |
| if (!s->udev) |
| return -ENODEV; |
| |
| return 0; |
| } |
| |
| static void msi3101_buf_queue(struct vb2_buffer *vb) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vb->vb2_queue); |
| struct msi3101_frame_buf *buf = |
| container_of(vb, struct msi3101_frame_buf, vb); |
| unsigned long flags = 0; |
| |
| /* Check the device has not disconnected between prep and queuing */ |
| if (!s->udev) { |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| return; |
| } |
| |
| spin_lock_irqsave(&s->queued_bufs_lock, flags); |
| list_add_tail(&buf->list, &s->queued_bufs); |
| spin_unlock_irqrestore(&s->queued_bufs_lock, flags); |
| } |
| |
| #define CMD_WREG 0x41 |
| #define CMD_START_STREAMING 0x43 |
| #define CMD_STOP_STREAMING 0x45 |
| #define CMD_READ_UNKNOW 0x48 |
| |
| #define msi3101_dbg_usb_control_msg(udev, r, t, v, _i, b, l) { \ |
| char *direction; \ |
| if (t == (USB_TYPE_VENDOR | USB_DIR_OUT)) \ |
| direction = ">>>"; \ |
| else \ |
| direction = "<<<"; \ |
| dev_dbg(&udev->dev, "%s: %02x %02x %02x %02x %02x %02x %02x %02x " \ |
| "%s %*ph\n", __func__, t, r, v & 0xff, v >> 8, \ |
| _i & 0xff, _i >> 8, l & 0xff, l >> 8, direction, l, b); \ |
| } |
| |
| static int msi3101_ctrl_msg(struct msi3101_state *s, u8 cmd, u32 data) |
| { |
| int ret; |
| u8 request = cmd; |
| u8 requesttype = USB_DIR_OUT | USB_TYPE_VENDOR; |
| u16 value = (data >> 0) & 0xffff; |
| u16 index = (data >> 16) & 0xffff; |
| |
| msi3101_dbg_usb_control_msg(s->udev, |
| request, requesttype, value, index, NULL, 0); |
| |
| ret = usb_control_msg(s->udev, usb_sndctrlpipe(s->udev, 0), |
| request, requesttype, value, index, NULL, 0, 2000); |
| |
| if (ret) |
| dev_err(&s->udev->dev, "%s: failed %d, cmd %02x, data %04x\n", |
| __func__, ret, cmd, data); |
| |
| return ret; |
| }; |
| |
| static int msi3101_tuner_write(struct msi3101_state *s, u32 data) |
| { |
| return msi3101_ctrl_msg(s, CMD_WREG, data << 8 | 0x09); |
| }; |
| |
| #define F_REF 24000000 |
| #define DIV_R_IN 2 |
| static int msi3101_set_usb_adc(struct msi3101_state *s) |
| { |
| int ret, div_n, div_m, div_r_out, f_sr, f_vco, fract; |
| u32 reg3, reg4, reg7; |
| |
| f_sr = s->ctrl_sampling_rate->val64; |
| |
| /* select stream format */ |
| if (f_sr < 6000000) { |
| s->convert_stream = msi3101_convert_stream_252; |
| reg7 = 0x00009407; |
| } else if (f_sr < 8000000) { |
| s->convert_stream = msi3101_convert_stream_336; |
| reg7 = 0x00008507; |
| } else if (f_sr < 9000000) { |
| s->convert_stream = msi3101_convert_stream_384; |
| reg7 = 0x0000a507; |
| } else { |
| s->convert_stream = msi3101_convert_stream_504; |
| reg7 = 0x000c9407; |
| } |
| |
| /* |
| * Synthesizer config is just a educated guess... |
| * |
| * [7:0] 0x03, register address |
| * [8] 1, always |
| * [9] ? |
| * [12:10] output divider |
| * [13] 0 ? |
| * [14] 0 ? |
| * [15] fractional MSB, bit 20 |
| * [16:19] N |
| * [23:20] ? |
| * [24:31] 0x01 |
| * |
| * output divider |
| * val div |
| * 0 - (invalid) |
| * 1 4 |
| * 2 6 |
| * 3 8 |
| * 4 10 |
| * 5 12 |
| * 6 14 |
| * 7 16 |
| * |
| * VCO 202000000 - 720000000++ |
| */ |
| reg3 = 0x01000303; |
| reg4 = 0x00000004; |
| |
| /* XXX: Filters? AGC? */ |
| if (f_sr < 6000000) |
| reg3 |= 0x1 << 20; |
| else if (f_sr < 7000000) |
| reg3 |= 0x5 << 20; |
| else if (f_sr < 8500000) |
| reg3 |= 0x9 << 20; |
| else |
| reg3 |= 0xd << 20; |
| |
| for (div_r_out = 4; div_r_out < 16; div_r_out += 2) { |
| f_vco = f_sr * div_r_out * 12; |
| dev_dbg(&s->udev->dev, "%s: div_r_out=%d f_vco=%d\n", |
| __func__, div_r_out, f_vco); |
| if (f_vco >= 202000000) |
| break; |
| } |
| |
| div_n = f_vco / (F_REF * DIV_R_IN); |
| div_m = f_vco % (F_REF * DIV_R_IN); |
| fract = 0x200000ul * div_m / (F_REF * DIV_R_IN); |
| |
| reg3 |= div_n << 16; |
| reg3 |= (div_r_out / 2 - 1) << 10; |
| reg3 |= ((fract >> 20) & 0x000001) << 15; /* [20] */ |
| reg4 |= ((fract >> 0) & 0x0fffff) << 8; /* [19:0] */ |
| |
| dev_dbg(&s->udev->dev, |
| "%s: f_sr=%d f_vco=%d div_n=%d div_m=%d div_r_out=%d reg3=%08x reg4=%08x\n", |
| __func__, f_sr, f_vco, div_n, div_m, div_r_out, reg3, reg4); |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00608008); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00000c05); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00020000); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00480102); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, 0x00f38008); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, reg7); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, reg4); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_ctrl_msg(s, CMD_WREG, reg3); |
| if (ret) |
| goto err; |
| err: |
| return ret; |
| }; |
| |
| static int msi3101_set_tuner(struct msi3101_state *s) |
| { |
| int ret, i, len; |
| unsigned int n, m, thresh, frac, vco_step, tmp, f_if1; |
| u32 reg; |
| u64 f_vco, tmp64; |
| u8 mode, filter_mode, lo_div; |
| const struct msi3101_gain *gain_lut; |
| static const struct { |
| u32 rf; |
| u8 mode; |
| u8 lo_div; |
| } band_lut[] = { |
| { 50000000, 0xe1, 16}, /* AM_MODE2, antenna 2 */ |
| {108000000, 0x42, 32}, /* VHF_MODE */ |
| {330000000, 0x44, 16}, /* B3_MODE */ |
| {960000000, 0x48, 4}, /* B45_MODE */ |
| { ~0U, 0x50, 2}, /* BL_MODE */ |
| }; |
| static const struct { |
| u32 freq; |
| u8 filter_mode; |
| } if_freq_lut[] = { |
| { 0, 0x03}, /* Zero IF */ |
| { 450000, 0x02}, /* 450 kHz IF */ |
| {1620000, 0x01}, /* 1.62 MHz IF */ |
| {2048000, 0x00}, /* 2.048 MHz IF */ |
| }; |
| static const struct { |
| u32 freq; |
| u8 val; |
| } bandwidth_lut[] = { |
| { 200000, 0x00}, /* 200 kHz */ |
| { 300000, 0x01}, /* 300 kHz */ |
| { 600000, 0x02}, /* 600 kHz */ |
| {1536000, 0x03}, /* 1.536 MHz */ |
| {5000000, 0x04}, /* 5 MHz */ |
| {6000000, 0x05}, /* 6 MHz */ |
| {7000000, 0x06}, /* 7 MHz */ |
| {8000000, 0x07}, /* 8 MHz */ |
| }; |
| |
| unsigned int f_rf = s->ctrl_tuner_rf->val64; |
| |
| /* |
| * bandwidth (Hz) |
| * 200000, 300000, 600000, 1536000, 5000000, 6000000, 7000000, 8000000 |
| */ |
| unsigned int bandwidth = s->ctrl_tuner_bw->val; |
| |
| /* |
| * intermediate frequency (Hz) |
| * 0, 450000, 1620000, 2048000 |
| */ |
| unsigned int f_if = s->ctrl_tuner_if->val; |
| |
| /* |
| * gain reduction (dB) |
| * 0 - 102 below 420 MHz |
| * 0 - 85 above 420 MHz |
| */ |
| int gain = s->ctrl_tuner_gain->val; |
| |
| dev_dbg(&s->udev->dev, |
| "%s: f_rf=%d bandwidth=%d f_if=%d gain=%d\n", |
| __func__, f_rf, bandwidth, f_if, gain); |
| |
| ret = -EINVAL; |
| |
| for (i = 0; i < ARRAY_SIZE(band_lut); i++) { |
| if (f_rf <= band_lut[i].rf) { |
| mode = band_lut[i].mode; |
| lo_div = band_lut[i].lo_div; |
| break; |
| } |
| } |
| |
| if (i == ARRAY_SIZE(band_lut)) |
| goto err; |
| |
| /* AM_MODE is upconverted */ |
| if ((mode >> 0) & 0x1) |
| f_if1 = 5 * F_REF; |
| else |
| f_if1 = 0; |
| |
| for (i = 0; i < ARRAY_SIZE(if_freq_lut); i++) { |
| if (f_if == if_freq_lut[i].freq) { |
| filter_mode = if_freq_lut[i].filter_mode; |
| break; |
| } |
| } |
| |
| if (i == ARRAY_SIZE(if_freq_lut)) |
| goto err; |
| |
| for (i = 0; i < ARRAY_SIZE(bandwidth_lut); i++) { |
| if (bandwidth == bandwidth_lut[i].freq) { |
| bandwidth = bandwidth_lut[i].val; |
| break; |
| } |
| } |
| |
| if (i == ARRAY_SIZE(bandwidth_lut)) |
| goto err; |
| |
| #define F_OUT_STEP 1 |
| #define R_REF 4 |
| f_vco = (f_rf + f_if + f_if1) * lo_div; |
| |
| tmp64 = f_vco; |
| m = do_div(tmp64, F_REF * R_REF); |
| n = (unsigned int) tmp64; |
| |
| vco_step = F_OUT_STEP * lo_div; |
| thresh = (F_REF * R_REF) / vco_step; |
| frac = 1ul * thresh * m / (F_REF * R_REF); |
| |
| /* Find out greatest common divisor and divide to smaller. */ |
| tmp = gcd(thresh, frac); |
| thresh /= tmp; |
| frac /= tmp; |
| |
| /* Force divide to reg max. Resolution will be reduced. */ |
| tmp = DIV_ROUND_UP(thresh, 4095); |
| thresh = DIV_ROUND_CLOSEST(thresh, tmp); |
| frac = DIV_ROUND_CLOSEST(frac, tmp); |
| |
| /* calc real RF set */ |
| tmp = 1ul * F_REF * R_REF * n; |
| tmp += 1ul * F_REF * R_REF * frac / thresh; |
| tmp /= lo_div; |
| |
| dev_dbg(&s->udev->dev, |
| "%s: rf=%u:%u n=%d thresh=%d frac=%d\n", |
| __func__, f_rf, tmp, n, thresh, frac); |
| |
| ret = msi3101_tuner_write(s, 0x00000e); |
| if (ret) |
| goto err; |
| |
| ret = msi3101_tuner_write(s, 0x000003); |
| if (ret) |
| goto err; |
| |
| reg = 0 << 0; |
| reg |= mode << 4; |
| reg |= filter_mode << 12; |
| reg |= bandwidth << 14; |
| reg |= 0x02 << 17; |
| reg |= 0x00 << 20; |
| ret = msi3101_tuner_write(s, reg); |
| if (ret) |
| goto err; |
| |
| reg = 5 << 0; |
| reg |= thresh << 4; |
| reg |= 1 << 19; |
| reg |= 1 << 21; |
| ret = msi3101_tuner_write(s, reg); |
| if (ret) |
| goto err; |
| |
| reg = 2 << 0; |
| reg |= frac << 4; |
| reg |= n << 16; |
| ret = msi3101_tuner_write(s, reg); |
| if (ret) |
| goto err; |
| |
| if (f_rf < 120000000) { |
| gain_lut = msi3101_gain_lut_120; |
| len = ARRAY_SIZE(msi3101_gain_lut_120); |
| } else if (f_rf < 245000000) { |
| gain_lut = msi3101_gain_lut_245; |
| len = ARRAY_SIZE(msi3101_gain_lut_120); |
| } else { |
| gain_lut = msi3101_gain_lut_1000; |
| len = ARRAY_SIZE(msi3101_gain_lut_1000); |
| } |
| |
| for (i = 0; i < len; i++) { |
| if (gain_lut[i].tot >= gain) |
| break; |
| } |
| |
| if (i == len) |
| goto err; |
| |
| dev_dbg(&s->udev->dev, |
| "%s: gain tot=%d baseband=%d lna=%d mixer=%d\n", |
| __func__, gain_lut[i].tot, gain_lut[i].baseband, |
| gain_lut[i].lna, gain_lut[i].mixer); |
| |
| reg = 1 << 0; |
| reg |= gain_lut[i].baseband << 4; |
| reg |= 0 << 10; |
| reg |= gain_lut[i].mixer << 12; |
| reg |= gain_lut[i].lna << 13; |
| reg |= 4 << 14; |
| reg |= 0 << 17; |
| ret = msi3101_tuner_write(s, reg); |
| if (ret) |
| goto err; |
| |
| reg = 6 << 0; |
| reg |= 63 << 4; |
| reg |= 4095 << 10; |
| ret = msi3101_tuner_write(s, reg); |
| if (ret) |
| goto err; |
| |
| return 0; |
| err: |
| dev_dbg(&s->udev->dev, "%s: failed %d\n", __func__, ret); |
| return ret; |
| }; |
| |
| static int msi3101_start_streaming(struct vb2_queue *vq, unsigned int count) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vq); |
| int ret; |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| if (!s->udev) |
| return -ENODEV; |
| |
| if (mutex_lock_interruptible(&s->v4l2_lock)) |
| return -ERESTARTSYS; |
| |
| ret = msi3101_set_usb_adc(s); |
| |
| ret = msi3101_isoc_init(s); |
| if (ret) |
| msi3101_cleanup_queued_bufs(s); |
| |
| ret = msi3101_ctrl_msg(s, CMD_START_STREAMING, 0); |
| |
| mutex_unlock(&s->v4l2_lock); |
| |
| return ret; |
| } |
| |
| static int msi3101_stop_streaming(struct vb2_queue *vq) |
| { |
| struct msi3101_state *s = vb2_get_drv_priv(vq); |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| if (mutex_lock_interruptible(&s->v4l2_lock)) |
| return -ERESTARTSYS; |
| |
| if (s->udev) |
| msi3101_isoc_cleanup(s); |
| |
| msi3101_cleanup_queued_bufs(s); |
| |
| /* according to tests, at least 700us delay is required */ |
| msleep(20); |
| msi3101_ctrl_msg(s, CMD_STOP_STREAMING, 0); |
| |
| mutex_unlock(&s->v4l2_lock); |
| |
| return 0; |
| } |
| |
| static struct vb2_ops msi3101_vb2_ops = { |
| .queue_setup = msi3101_queue_setup, |
| .buf_prepare = msi3101_buf_prepare, |
| .buf_queue = msi3101_buf_queue, |
| .start_streaming = msi3101_start_streaming, |
| .stop_streaming = msi3101_stop_streaming, |
| .wait_prepare = vb2_ops_wait_prepare, |
| .wait_finish = vb2_ops_wait_finish, |
| }; |
| |
| static int msi3101_enum_input(struct file *file, void *fh, struct v4l2_input *i) |
| { |
| if (i->index != 0) |
| return -EINVAL; |
| |
| strlcpy(i->name, "SDR data", sizeof(i->name)); |
| i->type = V4L2_INPUT_TYPE_CAMERA; |
| |
| return 0; |
| } |
| |
| static int msi3101_g_input(struct file *file, void *fh, unsigned int *i) |
| { |
| *i = 0; |
| |
| return 0; |
| } |
| |
| static int msi3101_s_input(struct file *file, void *fh, unsigned int i) |
| { |
| return i ? -EINVAL : 0; |
| } |
| |
| static int vidioc_s_tuner(struct file *file, void *priv, |
| const struct v4l2_tuner *v) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| return 0; |
| } |
| |
| static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| dev_dbg(&s->udev->dev, "%s:\n", __func__); |
| |
| strcpy(v->name, "SDR RX"); |
| v->capability = V4L2_TUNER_CAP_LOW; |
| |
| return 0; |
| } |
| |
| static int vidioc_s_frequency(struct file *file, void *priv, |
| const struct v4l2_frequency *f) |
| { |
| struct msi3101_state *s = video_drvdata(file); |
| dev_dbg(&s->udev->dev, "%s: frequency=%lu Hz (%u)\n", |
| __func__, f->frequency * 625UL / 10UL, f->frequency); |
| |
| return v4l2_ctrl_s_ctrl_int64(s->ctrl_tuner_rf, |
| f->frequency * 625UL / 10UL); |
| } |
| |
| static const struct v4l2_ioctl_ops msi3101_ioctl_ops = { |
| .vidioc_querycap = msi3101_querycap, |
| |
| .vidioc_enum_input = msi3101_enum_input, |
| .vidioc_g_input = msi3101_g_input, |
| .vidioc_s_input = msi3101_s_input, |
| |
| .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 = vidioc_g_tuner, |
| .vidioc_s_tuner = vidioc_s_tuner, |
| .vidioc_s_frequency = vidioc_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 msi3101_fops = { |
| .owner = THIS_MODULE, |
| .open = v4l2_fh_open, |
| .release = vb2_fop_release, |
| .read = vb2_fop_read, |
| .poll = vb2_fop_poll, |
| .mmap = vb2_fop_mmap, |
| .unlocked_ioctl = video_ioctl2, |
| }; |
| |
| static struct video_device msi3101_template = { |
| .name = "Mirics MSi3101 SDR Dongle", |
| .release = video_device_release_empty, |
| .fops = &msi3101_fops, |
| .ioctl_ops = &msi3101_ioctl_ops, |
| }; |
| |
| static int msi3101_s_ctrl(struct v4l2_ctrl *ctrl) |
| { |
| struct msi3101_state *s = |
| container_of(ctrl->handler, struct msi3101_state, |
| ctrl_handler); |
| int ret; |
| dev_dbg(&s->udev->dev, |
| "%s: id=%d name=%s val=%d min=%d max=%d step=%d\n", |
| __func__, ctrl->id, ctrl->name, ctrl->val, |
| ctrl->minimum, ctrl->maximum, ctrl->step); |
| |
| switch (ctrl->id) { |
| case MSI3101_CID_SAMPLING_MODE: |
| case MSI3101_CID_SAMPLING_RATE: |
| case MSI3101_CID_SAMPLING_RESOLUTION: |
| ret = 0; |
| break; |
| case MSI3101_CID_TUNER_RF: |
| case MSI3101_CID_TUNER_BW: |
| case MSI3101_CID_TUNER_IF: |
| case MSI3101_CID_TUNER_GAIN: |
| ret = msi3101_set_tuner(s); |
| break; |
| default: |
| ret = -EINVAL; |
| } |
| |
| return ret; |
| } |
| |
| static const struct v4l2_ctrl_ops msi3101_ctrl_ops = { |
| .s_ctrl = msi3101_s_ctrl, |
| }; |
| |
| static void msi3101_video_release(struct v4l2_device *v) |
| { |
| struct msi3101_state *s = |
| container_of(v, struct msi3101_state, v4l2_dev); |
| |
| v4l2_ctrl_handler_free(&s->ctrl_handler); |
| v4l2_device_unregister(&s->v4l2_dev); |
| kfree(s); |
| } |
| |
| static int msi3101_probe(struct usb_interface *intf, |
| const struct usb_device_id *id) |
| { |
| struct usb_device *udev = interface_to_usbdev(intf); |
| struct msi3101_state *s = NULL; |
| int ret; |
| static const char * const ctrl_sampling_mode_qmenu_strings[] = { |
| "Quadrature Sampling", |
| NULL, |
| }; |
| static const struct v4l2_ctrl_config ctrl_sampling_mode = { |
| .ops = &msi3101_ctrl_ops, |
| .id = MSI3101_CID_SAMPLING_MODE, |
| .type = V4L2_CTRL_TYPE_MENU, |
| .flags = V4L2_CTRL_FLAG_INACTIVE, |
| .name = "Sampling Mode", |
| .qmenu = ctrl_sampling_mode_qmenu_strings, |
| }; |
| static const struct v4l2_ctrl_config ctrl_sampling_rate = { |
| .ops = &msi3101_ctrl_ops, |
| .id = MSI3101_CID_SAMPLING_RATE, |
| .type = V4L2_CTRL_TYPE_INTEGER64, |
| .name = "Sampling Rate", |
| .min = 500000, |
| .max = 12000000, |
| .def = 2048000, |
| .step = 1, |
| }; |
| static const struct v4l2_ctrl_config ctrl_sampling_resolution = { |
| .ops = &msi3101_ctrl_ops, |
| .id = MSI3101_CID_SAMPLING_RESOLUTION, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .flags = V4L2_CTRL_FLAG_INACTIVE, |
| .name = "Sampling Resolution", |
| .min = 10, |
| .max = 10, |
| .def = 10, |
| .step = 1, |
| }; |
| static const struct v4l2_ctrl_config ctrl_tuner_rf = { |
| .ops = &msi3101_ctrl_ops, |
| .id = MSI3101_CID_TUNER_RF, |
| .type = V4L2_CTRL_TYPE_INTEGER64, |
| .name = "Tuner RF", |
| .min = 40000000, |
| .max = 2000000000, |
| .def = 100000000, |
| .step = 1, |
| }; |
| static const struct v4l2_ctrl_config ctrl_tuner_bw = { |
| .ops = &msi3101_ctrl_ops, |
| .id = MSI3101_CID_TUNER_BW, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Tuner BW", |
| .min = 200000, |
| .max = 8000000, |
| .def = 600000, |
| .step = 1, |
| }; |
| static const struct v4l2_ctrl_config ctrl_tuner_if = { |
| .ops = &msi3101_ctrl_ops, |
| .id = MSI3101_CID_TUNER_IF, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .flags = V4L2_CTRL_FLAG_INACTIVE, |
| .name = "Tuner IF", |
| .min = 0, |
| .max = 2048000, |
| .def = 0, |
| .step = 1, |
| }; |
| static const struct v4l2_ctrl_config ctrl_tuner_gain = { |
| .ops = &msi3101_ctrl_ops, |
| .id = MSI3101_CID_TUNER_GAIN, |
| .type = V4L2_CTRL_TYPE_INTEGER, |
| .name = "Tuner Gain", |
| .min = 0, |
| .max = 102, |
| .def = 0, |
| .step = 1, |
| }; |
| |
| s = kzalloc(sizeof(struct msi3101_state), GFP_KERNEL); |
| if (s == NULL) { |
| pr_err("Could not allocate memory for msi3101_state\n"); |
| return -ENOMEM; |
| } |
| |
| mutex_init(&s->v4l2_lock); |
| mutex_init(&s->vb_queue_lock); |
| spin_lock_init(&s->queued_bufs_lock); |
| INIT_LIST_HEAD(&s->queued_bufs); |
| |
| s->udev = udev; |
| |
| /* Init videobuf2 queue structure */ |
| s->vb_queue.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| s->vb_queue.io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ; |
| s->vb_queue.drv_priv = s; |
| s->vb_queue.buf_struct_size = sizeof(struct msi3101_frame_buf); |
| s->vb_queue.ops = &msi3101_vb2_ops; |
| s->vb_queue.mem_ops = &vb2_vmalloc_memops; |
| s->vb_queue.timestamp_type = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
| ret = vb2_queue_init(&s->vb_queue); |
| if (ret < 0) { |
| dev_err(&s->udev->dev, "Could not initialize vb2 queue\n"); |
| goto err_free_mem; |
| } |
| |
| /* Init video_device structure */ |
| s->vdev = msi3101_template; |
| s->vdev.queue = &s->vb_queue; |
| s->vdev.queue->lock = &s->vb_queue_lock; |
| set_bit(V4L2_FL_USE_FH_PRIO, &s->vdev.flags); |
| video_set_drvdata(&s->vdev, s); |
| |
| /* Register controls */ |
| v4l2_ctrl_handler_init(&s->ctrl_handler, 7); |
| v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_mode, NULL); |
| s->ctrl_sampling_rate = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_rate, NULL); |
| v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_sampling_resolution, NULL); |
| s->ctrl_tuner_rf = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_rf, NULL); |
| s->ctrl_tuner_bw = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_bw, NULL); |
| s->ctrl_tuner_if = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_if, NULL); |
| s->ctrl_tuner_gain = v4l2_ctrl_new_custom(&s->ctrl_handler, &ctrl_tuner_gain, NULL); |
| if (s->ctrl_handler.error) { |
| ret = s->ctrl_handler.error; |
| dev_err(&s->udev->dev, "Could not initialize controls\n"); |
| goto err_free_controls; |
| } |
| |
| /* Register the v4l2_device structure */ |
| s->v4l2_dev.release = msi3101_video_release; |
| ret = v4l2_device_register(&intf->dev, &s->v4l2_dev); |
| if (ret) { |
| dev_err(&s->udev->dev, |
| "Failed to register v4l2-device (%d)\n", ret); |
| goto err_free_controls; |
| } |
| |
| s->v4l2_dev.ctrl_handler = &s->ctrl_handler; |
| s->vdev.v4l2_dev = &s->v4l2_dev; |
| s->vdev.lock = &s->v4l2_lock; |
| |
| ret = video_register_device(&s->vdev, VFL_TYPE_GRABBER, -1); |
| if (ret < 0) { |
| dev_err(&s->udev->dev, |
| "Failed to register as video device (%d)\n", |
| ret); |
| goto err_unregister_v4l2_dev; |
| } |
| dev_info(&s->udev->dev, "Registered as %s\n", |
| video_device_node_name(&s->vdev)); |
| |
| return 0; |
| |
| err_unregister_v4l2_dev: |
| v4l2_device_unregister(&s->v4l2_dev); |
| err_free_controls: |
| v4l2_ctrl_handler_free(&s->ctrl_handler); |
| err_free_mem: |
| kfree(s); |
| return ret; |
| } |
| |
| /* USB device ID list */ |
| static struct usb_device_id msi3101_id_table[] = { |
| { USB_DEVICE(0x1df7, 0x2500) }, /* Mirics MSi3101 SDR Dongle */ |
| { USB_DEVICE(0x2040, 0xd300) }, /* Hauppauge WinTV 133559 LF */ |
| { } |
| }; |
| MODULE_DEVICE_TABLE(usb, msi3101_id_table); |
| |
| /* USB subsystem interface */ |
| static struct usb_driver msi3101_driver = { |
| .name = KBUILD_MODNAME, |
| .probe = msi3101_probe, |
| .disconnect = msi3101_disconnect, |
| .id_table = msi3101_id_table, |
| }; |
| |
| module_usb_driver(msi3101_driver); |
| |
| MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); |
| MODULE_DESCRIPTION("Mirics MSi3101 SDR Dongle"); |
| MODULE_LICENSE("GPL"); |