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linux/drivers/media/pci/tw5864/tw5864-video.c

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/*
* TW5864 driver - video encoding functions
*
* Copyright (C) 2016 Bluecherry, LLC <maintainers@bluecherrydvr.com>
*
* 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.
*/
#include <linux/module.h>
#include <media/v4l2-common.h>
#include <media/v4l2-event.h>
#include <media/videobuf2-dma-contig.h>
#include "tw5864.h"
#include "tw5864-reg.h"
#define QUANTIZATION_TABLE_LEN 96
#define VLC_LOOKUP_TABLE_LEN 1024
static const u16 forward_quantization_table[QUANTIZATION_TABLE_LEN] = {
0x3333, 0x1f82, 0x3333, 0x1f82, 0x1f82, 0x147b, 0x1f82, 0x147b,
0x3333, 0x1f82, 0x3333, 0x1f82, 0x1f82, 0x147b, 0x1f82, 0x147b,
0x2e8c, 0x1d42, 0x2e8c, 0x1d42, 0x1d42, 0x1234, 0x1d42, 0x1234,
0x2e8c, 0x1d42, 0x2e8c, 0x1d42, 0x1d42, 0x1234, 0x1d42, 0x1234,
0x2762, 0x199a, 0x2762, 0x199a, 0x199a, 0x1062, 0x199a, 0x1062,
0x2762, 0x199a, 0x2762, 0x199a, 0x199a, 0x1062, 0x199a, 0x1062,
0x2492, 0x16c1, 0x2492, 0x16c1, 0x16c1, 0x0e3f, 0x16c1, 0x0e3f,
0x2492, 0x16c1, 0x2492, 0x16c1, 0x16c1, 0x0e3f, 0x16c1, 0x0e3f,
0x2000, 0x147b, 0x2000, 0x147b, 0x147b, 0x0d1b, 0x147b, 0x0d1b,
0x2000, 0x147b, 0x2000, 0x147b, 0x147b, 0x0d1b, 0x147b, 0x0d1b,
0x1c72, 0x11cf, 0x1c72, 0x11cf, 0x11cf, 0x0b4d, 0x11cf, 0x0b4d,
0x1c72, 0x11cf, 0x1c72, 0x11cf, 0x11cf, 0x0b4d, 0x11cf, 0x0b4d
};
static const u16 inverse_quantization_table[QUANTIZATION_TABLE_LEN] = {
0x800a, 0x800d, 0x800a, 0x800d, 0x800d, 0x8010, 0x800d, 0x8010,
0x800a, 0x800d, 0x800a, 0x800d, 0x800d, 0x8010, 0x800d, 0x8010,
0x800b, 0x800e, 0x800b, 0x800e, 0x800e, 0x8012, 0x800e, 0x8012,
0x800b, 0x800e, 0x800b, 0x800e, 0x800e, 0x8012, 0x800e, 0x8012,
0x800d, 0x8010, 0x800d, 0x8010, 0x8010, 0x8014, 0x8010, 0x8014,
0x800d, 0x8010, 0x800d, 0x8010, 0x8010, 0x8014, 0x8010, 0x8014,
0x800e, 0x8012, 0x800e, 0x8012, 0x8012, 0x8017, 0x8012, 0x8017,
0x800e, 0x8012, 0x800e, 0x8012, 0x8012, 0x8017, 0x8012, 0x8017,
0x8010, 0x8014, 0x8010, 0x8014, 0x8014, 0x8019, 0x8014, 0x8019,
0x8010, 0x8014, 0x8010, 0x8014, 0x8014, 0x8019, 0x8014, 0x8019,
0x8012, 0x8017, 0x8012, 0x8017, 0x8017, 0x801d, 0x8017, 0x801d,
0x8012, 0x8017, 0x8012, 0x8017, 0x8017, 0x801d, 0x8017, 0x801d
};
static const u16 encoder_vlc_lookup_table[VLC_LOOKUP_TABLE_LEN] = {
0x011, 0x000, 0x000, 0x000, 0x065, 0x021, 0x000, 0x000, 0x087, 0x064,
0x031, 0x000, 0x097, 0x086, 0x075, 0x053, 0x0a7, 0x096, 0x085, 0x063,
0x0b7, 0x0a6, 0x095, 0x074, 0x0df, 0x0b6, 0x0a5, 0x084, 0x0db, 0x0de,
0x0b5, 0x094, 0x0d8, 0x0da, 0x0dd, 0x0a4, 0x0ef, 0x0ee, 0x0d9, 0x0b4,
0x0eb, 0x0ea, 0x0ed, 0x0dc, 0x0ff, 0x0fe, 0x0e9, 0x0ec, 0x0fb, 0x0fa,
0x0fd, 0x0e8, 0x10f, 0x0f1, 0x0f9, 0x0fc, 0x10b, 0x10e, 0x10d, 0x0f8,
0x107, 0x10a, 0x109, 0x10c, 0x104, 0x106, 0x105, 0x108, 0x023, 0x000,
0x000, 0x000, 0x06b, 0x022, 0x000, 0x000, 0x067, 0x057, 0x033, 0x000,
0x077, 0x06a, 0x069, 0x045, 0x087, 0x066, 0x065, 0x044, 0x084, 0x076,
0x075, 0x056, 0x097, 0x086, 0x085, 0x068, 0x0bf, 0x096, 0x095, 0x064,
0x0bb, 0x0be, 0x0bd, 0x074, 0x0cf, 0x0ba, 0x0b9, 0x094, 0x0cb, 0x0ce,
0x0cd, 0x0bc, 0x0c8, 0x0ca, 0x0c9, 0x0b8, 0x0df, 0x0de, 0x0dd, 0x0cc,
0x0db, 0x0da, 0x0d9, 0x0dc, 0x0d7, 0x0eb, 0x0d6, 0x0d8, 0x0e9, 0x0e8,
0x0ea, 0x0d1, 0x0e7, 0x0e6, 0x0e5, 0x0e4, 0x04f, 0x000, 0x000, 0x000,
0x06f, 0x04e, 0x000, 0x000, 0x06b, 0x05f, 0x04d, 0x000, 0x068, 0x05c,
0x05e, 0x04c, 0x07f, 0x05a, 0x05b, 0x04b, 0x07b, 0x058, 0x059, 0x04a,
0x079, 0x06e, 0x06d, 0x049, 0x078, 0x06a, 0x069, 0x048, 0x08f, 0x07e,
0x07d, 0x05d, 0x08b, 0x08e, 0x07a, 0x06c, 0x09f, 0x08a, 0x08d, 0x07c,
0x09b, 0x09e, 0x089, 0x08c, 0x098, 0x09a, 0x09d, 0x088, 0x0ad, 0x097,
0x099, 0x09c, 0x0a9, 0x0ac, 0x0ab, 0x0aa, 0x0a5, 0x0a8, 0x0a7, 0x0a6,
0x0a1, 0x0a4, 0x0a3, 0x0a2, 0x021, 0x000, 0x000, 0x000, 0x067, 0x011,
0x000, 0x000, 0x064, 0x066, 0x031, 0x000, 0x063, 0x073, 0x072, 0x065,
0x062, 0x083, 0x082, 0x070, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x011, 0x010,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x011, 0x021, 0x020, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x023, 0x022, 0x021, 0x020, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x023, 0x022, 0x021, 0x031,
0x030, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x023, 0x022, 0x033, 0x032, 0x031, 0x030, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x023, 0x030,
0x031, 0x033, 0x032, 0x035, 0x034, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x037, 0x036, 0x035, 0x034, 0x033, 0x032,
0x031, 0x041, 0x051, 0x061, 0x071, 0x081, 0x091, 0x0a1, 0x0b1, 0x000,
0x002, 0x000, 0x0e4, 0x011, 0x0f4, 0x002, 0x024, 0x003, 0x005, 0x012,
0x034, 0x013, 0x065, 0x024, 0x013, 0x063, 0x015, 0x022, 0x075, 0x034,
0x044, 0x023, 0x023, 0x073, 0x054, 0x033, 0x033, 0x004, 0x043, 0x014,
0x011, 0x043, 0x014, 0x001, 0x025, 0x015, 0x035, 0x025, 0x064, 0x055,
0x045, 0x035, 0x074, 0x065, 0x085, 0x0d5, 0x012, 0x095, 0x055, 0x045,
0x095, 0x0e5, 0x084, 0x075, 0x022, 0x0a5, 0x094, 0x085, 0x032, 0x0b5,
0x003, 0x0c5, 0x001, 0x044, 0x0a5, 0x032, 0x0b5, 0x094, 0x0c5, 0x0a4,
0x0a4, 0x054, 0x0d5, 0x0b4, 0x0b4, 0x064, 0x0f5, 0x0f5, 0x053, 0x0d4,
0x0e5, 0x0c4, 0x105, 0x105, 0x0c4, 0x074, 0x063, 0x0e4, 0x0d4, 0x084,
0x073, 0x0f4, 0x004, 0x005, 0x000, 0x053, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x011, 0x021, 0x031, 0x030, 0x011, 0x021, 0x020, 0x000,
0x011, 0x010, 0x000, 0x000, 0x011, 0x033, 0x032, 0x043, 0x042, 0x053,
0x052, 0x063, 0x062, 0x073, 0x072, 0x083, 0x082, 0x093, 0x092, 0x091,
0x037, 0x036, 0x035, 0x034, 0x033, 0x045, 0x044, 0x043, 0x042, 0x053,
0x052, 0x063, 0x062, 0x061, 0x060, 0x000, 0x045, 0x037, 0x036, 0x035,
0x044, 0x043, 0x034, 0x033, 0x042, 0x053, 0x052, 0x061, 0x051, 0x060,
0x000, 0x000, 0x053, 0x037, 0x045, 0x044, 0x036, 0x035, 0x034, 0x043,
0x033, 0x042, 0x052, 0x051, 0x050, 0x000, 0x000, 0x000, 0x045, 0x044,
0x043, 0x037, 0x036, 0x035, 0x034, 0x033, 0x042, 0x051, 0x041, 0x050,
0x000, 0x000, 0x000, 0x000, 0x061, 0x051, 0x037, 0x036, 0x035, 0x034,
0x033, 0x032, 0x041, 0x031, 0x060, 0x000, 0x000, 0x000, 0x000, 0x000,
0x061, 0x051, 0x035, 0x034, 0x033, 0x023, 0x032, 0x041, 0x031, 0x060,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x061, 0x041, 0x051, 0x033,
0x023, 0x022, 0x032, 0x031, 0x060, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x061, 0x060, 0x041, 0x023, 0x022, 0x031, 0x021, 0x051,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x051, 0x050,
0x031, 0x023, 0x022, 0x021, 0x041, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x040, 0x041, 0x031, 0x032, 0x011, 0x033,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x040, 0x041, 0x021, 0x011, 0x031, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x030, 0x031, 0x011, 0x021,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x020, 0x021, 0x011, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x010, 0x011,
0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000,
0x000, 0x000, 0x000, 0x000
};
static const unsigned int lambda_lookup_table[] = {
0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020,
0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020, 0x0020,
0x0040, 0x0040, 0x0040, 0x0040, 0x0060, 0x0060, 0x0060, 0x0080,
0x0080, 0x0080, 0x00a0, 0x00c0, 0x00c0, 0x00e0, 0x0100, 0x0120,
0x0140, 0x0160, 0x01a0, 0x01c0, 0x0200, 0x0240, 0x0280, 0x02e0,
0x0320, 0x03a0, 0x0400, 0x0480, 0x0500, 0x05a0, 0x0660, 0x0720,
0x0800, 0x0900, 0x0a20, 0x0b60
};
static const unsigned int intra4x4_lambda3[] = {
1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 3, 3, 3, 4,
4, 4, 5, 6, 6, 7, 8, 9,
10, 11, 13, 14, 16, 18, 20, 23,
25, 29, 32, 36, 40, 45, 51, 57,
64, 72, 81, 91
};
static v4l2_std_id tw5864_get_v4l2_std(enum tw5864_vid_std std);
static enum tw5864_vid_std tw5864_from_v4l2_std(v4l2_std_id v4l2_std);
static void tw5864_handle_frame_task(unsigned long data);
static void tw5864_handle_frame(struct tw5864_h264_frame *frame);
static void tw5864_frame_interval_set(struct tw5864_input *input);
static int tw5864_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
unsigned int *num_planes, unsigned int sizes[],
struct device *alloc_ctxs[])
{
if (*num_planes)
return sizes[0] < H264_VLC_BUF_SIZE ? -EINVAL : 0;
sizes[0] = H264_VLC_BUF_SIZE;
*num_planes = 1;
return 0;
}
static void tw5864_buf_queue(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vb2_queue *vq = vb->vb2_queue;
struct tw5864_input *dev = vb2_get_drv_priv(vq);
struct tw5864_buf *buf = container_of(vbuf, struct tw5864_buf, vb);
unsigned long flags;
spin_lock_irqsave(&dev->slock, flags);
list_add_tail(&buf->list, &dev->active);
spin_unlock_irqrestore(&dev->slock, flags);
}
static int tw5864_input_std_get(struct tw5864_input *input,
enum tw5864_vid_std *std)
{
struct tw5864_dev *dev = input->root;
u8 std_reg = tw_indir_readb(TW5864_INDIR_VIN_E(input->nr));
*std = (std_reg & 0x70) >> 4;
if (std_reg & 0x80) {
dev_dbg(&dev->pci->dev,
"Video format detection is in progress, please wait\n");
return -EAGAIN;
}
return 0;
}
static int tw5864_enable_input(struct tw5864_input *input)
{
struct tw5864_dev *dev = input->root;
int nr = input->nr;
unsigned long flags;
int d1_width = 720;
int d1_height;
int frame_width_bus_value = 0;
int frame_height_bus_value = 0;
int reg_frame_bus = 0x1c;
int fmt_reg_value = 0;
int downscale_enabled = 0;
dev_dbg(&dev->pci->dev, "Enabling channel %d\n", nr);
input->frame_seqno = 0;
input->frame_gop_seqno = 0;
input->h264_idr_pic_id = 0;
input->reg_dsp_qp = input->qp;
input->reg_dsp_ref_mvp_lambda = lambda_lookup_table[input->qp];
input->reg_dsp_i4x4_weight = intra4x4_lambda3[input->qp];
input->reg_emu = TW5864_EMU_EN_LPF | TW5864_EMU_EN_BHOST
| TW5864_EMU_EN_SEN | TW5864_EMU_EN_ME | TW5864_EMU_EN_DDR;
input->reg_dsp = nr /* channel id */
| TW5864_DSP_CHROM_SW
| ((0xa << 8) & TW5864_DSP_MB_DELAY)
;
input->resolution = D1;
d1_height = (input->std == STD_NTSC) ? 480 : 576;
input->width = d1_width;
input->height = d1_height;
input->reg_interlacing = 0x4;
switch (input->resolution) {
case D1:
frame_width_bus_value = 0x2cf;
frame_height_bus_value = input->height - 1;
reg_frame_bus = 0x1c;
fmt_reg_value = 0;
downscale_enabled = 0;
input->reg_dsp_codec |= TW5864_CIF_MAP_MD | TW5864_HD1_MAP_MD;
input->reg_emu |= TW5864_DSP_FRAME_TYPE_D1;
input->reg_interlacing = TW5864_DI_EN | TW5864_DSP_INTER_ST;
tw_setl(TW5864_FULL_HALF_FLAG, 1 << nr);
break;
case HD1:
input->height /= 2;
input->width /= 2;
frame_width_bus_value = 0x2cf;
frame_height_bus_value = input->height * 2 - 1;
reg_frame_bus = 0x1c;
fmt_reg_value = 0;
downscale_enabled = 0;
input->reg_dsp_codec |= TW5864_HD1_MAP_MD;
input->reg_emu |= TW5864_DSP_FRAME_TYPE_D1;
tw_clearl(TW5864_FULL_HALF_FLAG, 1 << nr);
break;
case CIF:
input->height /= 4;
input->width /= 2;
frame_width_bus_value = 0x15f;
frame_height_bus_value = input->height * 2 - 1;
reg_frame_bus = 0x07;
fmt_reg_value = 1;
downscale_enabled = 1;
input->reg_dsp_codec |= TW5864_CIF_MAP_MD;
tw_clearl(TW5864_FULL_HALF_FLAG, 1 << nr);
break;
case QCIF:
input->height /= 4;
input->width /= 4;
frame_width_bus_value = 0x15f;
frame_height_bus_value = input->height * 2 - 1;
reg_frame_bus = 0x07;
fmt_reg_value = 1;
downscale_enabled = 1;
input->reg_dsp_codec |= TW5864_CIF_MAP_MD;
tw_clearl(TW5864_FULL_HALF_FLAG, 1 << nr);
break;
}
/* analog input width / 4 */
tw_indir_writeb(TW5864_INDIR_IN_PIC_WIDTH(nr), d1_width / 4);
tw_indir_writeb(TW5864_INDIR_IN_PIC_HEIGHT(nr), d1_height / 4);
/* output width / 4 */
tw_indir_writeb(TW5864_INDIR_OUT_PIC_WIDTH(nr), input->width / 4);
tw_indir_writeb(TW5864_INDIR_OUT_PIC_HEIGHT(nr), input->height / 4);
/*
* Crop width from 720 to 704.
* Above register settings need value 720 involved.
*/
input->width = 704;
tw_indir_writeb(TW5864_INDIR_CROP_ETC,
tw_indir_readb(TW5864_INDIR_CROP_ETC) |
TW5864_INDIR_CROP_ETC_CROP_EN);
tw_writel(TW5864_DSP_PIC_MAX_MB,
((input->width / 16) << 8) | (input->height / 16));
tw_writel(TW5864_FRAME_WIDTH_BUS_A(nr),
frame_width_bus_value);
tw_writel(TW5864_FRAME_WIDTH_BUS_B(nr),
frame_width_bus_value);
tw_writel(TW5864_FRAME_HEIGHT_BUS_A(nr),
frame_height_bus_value);
tw_writel(TW5864_FRAME_HEIGHT_BUS_B(nr),
(frame_height_bus_value + 1) / 2 - 1);
tw5864_frame_interval_set(input);
if (downscale_enabled)
tw_setl(TW5864_H264EN_CH_DNS, 1 << nr);
tw_mask_shift_writel(TW5864_H264EN_CH_FMT_REG1, 0x3, 2 * nr,
fmt_reg_value);
tw_mask_shift_writel((nr < 2
? TW5864_H264EN_RATE_MAX_LINE_REG1
: TW5864_H264EN_RATE_MAX_LINE_REG2),
0x1f, 5 * (nr % 2),
input->std == STD_NTSC ? 29 : 24);
tw_mask_shift_writel((nr < 2) ? TW5864_FRAME_BUS1 :
TW5864_FRAME_BUS2, 0xff, (nr % 2) * 8,
reg_frame_bus);
spin_lock_irqsave(&dev->slock, flags);
input->enabled = 1;
spin_unlock_irqrestore(&dev->slock, flags);
return 0;
}
void tw5864_request_encoded_frame(struct tw5864_input *input)
{
struct tw5864_dev *dev = input->root;
u32 enc_buf_id_new;
tw_setl(TW5864_DSP_CODEC, TW5864_CIF_MAP_MD | TW5864_HD1_MAP_MD);
tw_writel(TW5864_EMU, input->reg_emu);
tw_writel(TW5864_INTERLACING, input->reg_interlacing);
tw_writel(TW5864_DSP, input->reg_dsp);
tw_writel(TW5864_DSP_QP, input->reg_dsp_qp);
tw_writel(TW5864_DSP_REF_MVP_LAMBDA, input->reg_dsp_ref_mvp_lambda);
tw_writel(TW5864_DSP_I4x4_WEIGHT, input->reg_dsp_i4x4_weight);
tw_mask_shift_writel(TW5864_DSP_INTRA_MODE, TW5864_DSP_INTRA_MODE_MASK,
TW5864_DSP_INTRA_MODE_SHIFT,
TW5864_DSP_INTRA_MODE_16x16);
if (input->frame_gop_seqno == 0) {
/* Produce I-frame */
tw_writel(TW5864_MOTION_SEARCH_ETC, TW5864_INTRA_EN);
input->h264_idr_pic_id++;
input->h264_idr_pic_id &= TW5864_DSP_REF_FRM;
} else {
/* Produce P-frame */
tw_writel(TW5864_MOTION_SEARCH_ETC, TW5864_INTRA_EN |
TW5864_ME_EN | BIT(5) /* SRCH_OPT default */);
}
tw5864_prepare_frame_headers(input);
tw_writel(TW5864_VLC,
TW5864_VLC_PCI_SEL |
((input->tail_nb_bits + 24) << TW5864_VLC_BIT_ALIGN_SHIFT) |
input->reg_dsp_qp);
enc_buf_id_new = tw_mask_shift_readl(TW5864_ENC_BUF_PTR_REC1, 0x3,
2 * input->nr);
tw_writel(TW5864_DSP_ENC_ORG_PTR_REG,
enc_buf_id_new << TW5864_DSP_ENC_ORG_PTR_SHIFT);
tw_writel(TW5864_DSP_ENC_REC,
enc_buf_id_new << 12 | ((enc_buf_id_new + 3) & 3));
tw_writel(TW5864_SLICE, TW5864_START_NSLICE);
tw_writel(TW5864_SLICE, 0);
}
static int tw5864_disable_input(struct tw5864_input *input)
{
struct tw5864_dev *dev = input->root;
unsigned long flags;
dev_dbg(&dev->pci->dev, "Disabling channel %d\n", input->nr);
spin_lock_irqsave(&dev->slock, flags);
input->enabled = 0;
spin_unlock_irqrestore(&dev->slock, flags);
return 0;
}
static int tw5864_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct tw5864_input *input = vb2_get_drv_priv(q);
int ret;
ret = tw5864_enable_input(input);
if (!ret)
return 0;
while (!list_empty(&input->active)) {
struct tw5864_buf *buf = list_entry(input->active.next,
struct tw5864_buf, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
}
return ret;
}
static void tw5864_stop_streaming(struct vb2_queue *q)
{
unsigned long flags;
struct tw5864_input *input = vb2_get_drv_priv(q);
tw5864_disable_input(input);
spin_lock_irqsave(&input->slock, flags);
if (input->vb) {
vb2_buffer_done(&input->vb->vb.vb2_buf, VB2_BUF_STATE_ERROR);
input->vb = NULL;
}
while (!list_empty(&input->active)) {
struct tw5864_buf *buf = list_entry(input->active.next,
struct tw5864_buf, list);
list_del(&buf->list);
vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
}
spin_unlock_irqrestore(&input->slock, flags);
}
static const struct vb2_ops tw5864_video_qops = {
.queue_setup = tw5864_queue_setup,
.buf_queue = tw5864_buf_queue,
.start_streaming = tw5864_start_streaming,
.stop_streaming = tw5864_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static int tw5864_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct tw5864_input *input =
container_of(ctrl->handler, struct tw5864_input, hdl);
struct tw5864_dev *dev = input->root;
unsigned long flags;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
tw_indir_writeb(TW5864_INDIR_VIN_A_BRIGHT(input->nr),
(u8)ctrl->val);
break;
case V4L2_CID_HUE:
tw_indir_writeb(TW5864_INDIR_VIN_7_HUE(input->nr),
(u8)ctrl->val);
break;
case V4L2_CID_CONTRAST:
tw_indir_writeb(TW5864_INDIR_VIN_9_CNTRST(input->nr),
(u8)ctrl->val);
break;
case V4L2_CID_SATURATION:
tw_indir_writeb(TW5864_INDIR_VIN_B_SAT_U(input->nr),
(u8)ctrl->val);
tw_indir_writeb(TW5864_INDIR_VIN_C_SAT_V(input->nr),
(u8)ctrl->val);
break;
case V4L2_CID_MPEG_VIDEO_GOP_SIZE:
input->gop = ctrl->val;
return 0;
case V4L2_CID_MPEG_VIDEO_H264_MIN_QP:
spin_lock_irqsave(&input->slock, flags);
input->qp = ctrl->val;
input->reg_dsp_qp = input->qp;
input->reg_dsp_ref_mvp_lambda = lambda_lookup_table[input->qp];
input->reg_dsp_i4x4_weight = intra4x4_lambda3[input->qp];
spin_unlock_irqrestore(&input->slock, flags);
return 0;
case V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD:
memset(input->md_threshold_grid_values, ctrl->val,
sizeof(input->md_threshold_grid_values));
return 0;
case V4L2_CID_DETECT_MD_MODE:
return 0;
case V4L2_CID_DETECT_MD_THRESHOLD_GRID:
/* input->md_threshold_grid_ctrl->p_new.p_u16 contains data */
memcpy(input->md_threshold_grid_values,
input->md_threshold_grid_ctrl->p_new.p_u16,
sizeof(input->md_threshold_grid_values));
return 0;
}
return 0;
}
static int tw5864_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct tw5864_input *input = video_drvdata(file);
f->fmt.pix.width = 704;
switch (input->std) {
default:
WARN_ON_ONCE(1);
return -EINVAL;
case STD_NTSC:
f->fmt.pix.height = 480;
break;
case STD_PAL:
case STD_SECAM:
f->fmt.pix.height = 576;
break;
}
f->fmt.pix.field = V4L2_FIELD_INTERLACED;
f->fmt.pix.pixelformat = V4L2_PIX_FMT_H264;
f->fmt.pix.sizeimage = H264_VLC_BUF_SIZE;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
return 0;
}
static int tw5864_enum_input(struct file *file, void *priv,
struct v4l2_input *i)
{
struct tw5864_input *input = video_drvdata(file);
struct tw5864_dev *dev = input->root;
u8 indir_0x000 = tw_indir_readb(TW5864_INDIR_VIN_0(input->nr));
u8 indir_0x00d = tw_indir_readb(TW5864_INDIR_VIN_D(input->nr));
u8 v1 = indir_0x000;
u8 v2 = indir_0x00d;
if (i->index)
return -EINVAL;
i->type = V4L2_INPUT_TYPE_CAMERA;
snprintf(i->name, sizeof(i->name), "Encoder %d", input->nr);
i->std = TW5864_NORMS;
if (v1 & (1 << 7))
i->status |= V4L2_IN_ST_NO_SYNC;
if (!(v1 & (1 << 6)))
i->status |= V4L2_IN_ST_NO_H_LOCK;
if (v1 & (1 << 2))
i->status |= V4L2_IN_ST_NO_SIGNAL;
if (v1 & (1 << 1))
i->status |= V4L2_IN_ST_NO_COLOR;
if (v2 & (1 << 2))
i->status |= V4L2_IN_ST_MACROVISION;
return 0;
}
static int tw5864_g_input(struct file *file, void *priv, unsigned int *i)
{
*i = 0;
return 0;
}
static int tw5864_s_input(struct file *file, void *priv, unsigned int i)
{
if (i)
return -EINVAL;
return 0;
}
static int tw5864_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
struct tw5864_input *input = video_drvdata(file);
strcpy(cap->driver, "tw5864");
snprintf(cap->card, sizeof(cap->card), "TW5864 Encoder %d",
input->nr);
sprintf(cap->bus_info, "PCI:%s", pci_name(input->root->pci));
return 0;
}
static int tw5864_querystd(struct file *file, void *priv, v4l2_std_id *std)
{
struct tw5864_input *input = video_drvdata(file);
enum tw5864_vid_std tw_std;
int ret;
ret = tw5864_input_std_get(input, &tw_std);
if (ret)
return ret;
*std = tw5864_get_v4l2_std(tw_std);
return 0;
}
static int tw5864_g_std(struct file *file, void *priv, v4l2_std_id *std)
{
struct tw5864_input *input = video_drvdata(file);
*std = input->v4l2_std;
return 0;
}
static int tw5864_s_std(struct file *file, void *priv, v4l2_std_id std)
{
struct tw5864_input *input = video_drvdata(file);
struct tw5864_dev *dev = input->root;
input->v4l2_std = std;
input->std = tw5864_from_v4l2_std(std);
tw_indir_writeb(TW5864_INDIR_VIN_E(input->nr), input->std);
return 0;
}
static int tw5864_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
if (f->index)
return -EINVAL;
f->pixelformat = V4L2_PIX_FMT_H264;
return 0;
}
static int tw5864_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
switch (sub->type) {
case V4L2_EVENT_MOTION_DET:
/*
* Allow for up to 30 events (1 second for NTSC) to be stored.
*/
return v4l2_event_subscribe(fh, sub, 30, NULL);
default:
return v4l2_ctrl_subscribe_event(fh, sub);
}
}
static void tw5864_frame_interval_set(struct tw5864_input *input)
{
/*
* This register value seems to follow such approach: In each second
* interval, when processing Nth frame, it checks Nth bit of register
* value and, if the bit is 1, it processes the frame, otherwise the
* frame is discarded.
* So unary representation would work, but more or less equal gaps
* between the frames should be preserved.
*
* For 1 FPS - 0x00000001
* 00000000 00000000 00000000 00000001
*
* For max FPS - set all 25/30 lower bits:
* 00111111 11111111 11111111 11111111 (NTSC)
* 00000001 11111111 11111111 11111111 (PAL)
*
* For half of max FPS - use such pattern:
* 00010101 01010101 01010101 01010101 (NTSC)
* 00000001 01010101 01010101 01010101 (PAL)
*
* Et cetera.
*
* The value supplied to hardware is capped by mask of 25/30 lower bits.
*/
struct tw5864_dev *dev = input->root;
u32 unary_framerate = 0;
int shift = 0;
int std_max_fps = input->std == STD_NTSC ? 30 : 25;
for (shift = 0; shift < std_max_fps; shift += input->frame_interval)
unary_framerate |= 0x00000001 << shift;
tw_writel(TW5864_H264EN_RATE_CNTL_LO_WORD(input->nr, 0),
unary_framerate >> 16);
tw_writel(TW5864_H264EN_RATE_CNTL_HI_WORD(input->nr, 0),
unary_framerate & 0xffff);
}
static int tw5864_frameinterval_get(struct tw5864_input *input,
struct v4l2_fract *frameinterval)
{
struct tw5864_dev *dev = input->root;
switch (input->std) {
case STD_NTSC:
frameinterval->numerator = 1001;
frameinterval->denominator = 30000;
break;
case STD_PAL:
case STD_SECAM:
frameinterval->numerator = 1;
frameinterval->denominator = 25;
break;
default:
dev_warn(&dev->pci->dev, "tw5864_frameinterval_get requested for unknown std %d\n",
input->std);
return -EINVAL;
}
return 0;
}
static int tw5864_enum_framesizes(struct file *file, void *priv,
struct v4l2_frmsizeenum *fsize)
{
struct tw5864_input *input = video_drvdata(file);
if (fsize->index > 0)
return -EINVAL;
if (fsize->pixel_format != V4L2_PIX_FMT_H264)
return -EINVAL;
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fsize->discrete.width = 704;
fsize->discrete.height = input->std == STD_NTSC ? 480 : 576;
return 0;
}
static int tw5864_enum_frameintervals(struct file *file, void *priv,
struct v4l2_frmivalenum *fintv)
{
struct tw5864_input *input = video_drvdata(file);
struct v4l2_fract frameinterval;
int std_max_fps = input->std == STD_NTSC ? 30 : 25;
struct v4l2_frmsizeenum fsize = { .index = fintv->index,
.pixel_format = fintv->pixel_format };
int ret;
ret = tw5864_enum_framesizes(file, priv, &fsize);
if (ret)
return ret;
if (fintv->width != fsize.discrete.width ||
fintv->height != fsize.discrete.height)
return -EINVAL;
fintv->type = V4L2_FRMIVAL_TYPE_STEPWISE;
ret = tw5864_frameinterval_get(input, &frameinterval);
fintv->stepwise.step = frameinterval;
fintv->stepwise.min = frameinterval;
fintv->stepwise.max = frameinterval;
fintv->stepwise.max.numerator *= std_max_fps;
return ret;
}
static int tw5864_g_parm(struct file *file, void *priv,
struct v4l2_streamparm *sp)
{
struct tw5864_input *input = video_drvdata(file);
struct v4l2_captureparm *cp = &sp->parm.capture;
int ret;
cp->capability = V4L2_CAP_TIMEPERFRAME;
ret = tw5864_frameinterval_get(input, &cp->timeperframe);
cp->timeperframe.numerator *= input->frame_interval;
cp->capturemode = 0;
cp->readbuffers = 2;
return ret;
}
static int tw5864_s_parm(struct file *file, void *priv,
struct v4l2_streamparm *sp)
{
struct tw5864_input *input = video_drvdata(file);
struct v4l2_fract *t = &sp->parm.capture.timeperframe;
struct v4l2_fract time_base;
int ret;
ret = tw5864_frameinterval_get(input, &time_base);
if (ret)
return ret;
if (!t->numerator || !t->denominator) {
t->numerator = time_base.numerator * input->frame_interval;
t->denominator = time_base.denominator;
} else if (t->denominator != time_base.denominator) {
t->numerator = t->numerator * time_base.denominator /
t->denominator;
t->denominator = time_base.denominator;
}
input->frame_interval = t->numerator / time_base.numerator;
if (input->frame_interval < 1)
input->frame_interval = 1;
tw5864_frame_interval_set(input);
return tw5864_g_parm(file, priv, sp);
}
static const struct v4l2_ctrl_ops tw5864_ctrl_ops = {
.s_ctrl = tw5864_s_ctrl,
};
static const struct v4l2_file_operations video_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,
};
#ifdef CONFIG_VIDEO_ADV_DEBUG
#define INDIR_SPACE_MAP_SHIFT 0x100000
static int tw5864_g_reg(struct file *file, void *fh,
struct v4l2_dbg_register *reg)
{
struct tw5864_input *input = video_drvdata(file);
struct tw5864_dev *dev = input->root;
if (reg->reg < INDIR_SPACE_MAP_SHIFT) {
if (reg->reg > 0x87fff)
return -EINVAL;
reg->size = 4;
reg->val = tw_readl(reg->reg);
} else {
__u64 indir_addr = reg->reg - INDIR_SPACE_MAP_SHIFT;
if (indir_addr > 0xefe)
return -EINVAL;
reg->size = 1;
reg->val = tw_indir_readb(reg->reg);
}
return 0;
}
static int tw5864_s_reg(struct file *file, void *fh,
const struct v4l2_dbg_register *reg)
{
struct tw5864_input *input = video_drvdata(file);
struct tw5864_dev *dev = input->root;
if (reg->reg < INDIR_SPACE_MAP_SHIFT) {
if (reg->reg > 0x87fff)
return -EINVAL;
tw_writel(reg->reg, reg->val);
} else {
__u64 indir_addr = reg->reg - INDIR_SPACE_MAP_SHIFT;
if (indir_addr > 0xefe)
return -EINVAL;
tw_indir_writeb(reg->reg, reg->val);
}
return 0;
}
#endif
static const struct v4l2_ioctl_ops video_ioctl_ops = {
.vidioc_querycap = tw5864_querycap,
.vidioc_enum_fmt_vid_cap = tw5864_enum_fmt_vid_cap,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_create_bufs = vb2_ioctl_create_bufs,
.vidioc_querybuf = vb2_ioctl_querybuf,
.vidioc_qbuf = vb2_ioctl_qbuf,
.vidioc_dqbuf = vb2_ioctl_dqbuf,
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_querystd = tw5864_querystd,
.vidioc_s_std = tw5864_s_std,
.vidioc_g_std = tw5864_g_std,
.vidioc_enum_input = tw5864_enum_input,
.vidioc_g_input = tw5864_g_input,
.vidioc_s_input = tw5864_s_input,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
.vidioc_try_fmt_vid_cap = tw5864_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = tw5864_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = tw5864_fmt_vid_cap,
.vidioc_log_status = v4l2_ctrl_log_status,
.vidioc_subscribe_event = tw5864_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_enum_framesizes = tw5864_enum_framesizes,
.vidioc_enum_frameintervals = tw5864_enum_frameintervals,
.vidioc_s_parm = tw5864_s_parm,
.vidioc_g_parm = tw5864_g_parm,
#ifdef CONFIG_VIDEO_ADV_DEBUG
.vidioc_g_register = tw5864_g_reg,
.vidioc_s_register = tw5864_s_reg,
#endif
};
static const struct video_device tw5864_video_template = {
.name = "tw5864_video",
.fops = &video_fops,
.ioctl_ops = &video_ioctl_ops,
.release = video_device_release_empty,
.tvnorms = TW5864_NORMS,
.device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE |
V4L2_CAP_STREAMING,
};
/* Motion Detection Threshold matrix */
static const struct v4l2_ctrl_config tw5864_md_thresholds = {
.ops = &tw5864_ctrl_ops,
.id = V4L2_CID_DETECT_MD_THRESHOLD_GRID,
.dims = {MD_CELLS_HOR, MD_CELLS_VERT},
.def = 14,
/* See tw5864_md_metric_from_mvd() */
.max = 2 * 0x0f,
.step = 1,
};
static int tw5864_video_input_init(struct tw5864_input *dev, int video_nr);
static void tw5864_video_input_fini(struct tw5864_input *dev);
static void tw5864_encoder_tables_upload(struct tw5864_dev *dev);
int tw5864_video_init(struct tw5864_dev *dev, int *video_nr)
{
int i;
int ret;
unsigned long flags;
int last_dma_allocated = -1;
int last_input_nr_registered = -1;
for (i = 0; i < H264_BUF_CNT; i++) {
struct tw5864_h264_frame *frame = &dev->h264_buf[i];
frame->vlc.addr = dma_alloc_coherent(&dev->pci->dev,
H264_VLC_BUF_SIZE,
&frame->vlc.dma_addr,
GFP_KERNEL | GFP_DMA32);
if (!frame->vlc.addr) {
dev_err(&dev->pci->dev, "dma alloc fail\n");
ret = -ENOMEM;
goto free_dma;
}
frame->mv.addr = dma_alloc_coherent(&dev->pci->dev,
H264_MV_BUF_SIZE,
&frame->mv.dma_addr,
GFP_KERNEL | GFP_DMA32);
if (!frame->mv.addr) {
dev_err(&dev->pci->dev, "dma alloc fail\n");
ret = -ENOMEM;
dma_free_coherent(&dev->pci->dev, H264_VLC_BUF_SIZE,
frame->vlc.addr, frame->vlc.dma_addr);
goto free_dma;
}
last_dma_allocated = i;
}
tw5864_encoder_tables_upload(dev);
/* Picture is distorted without this block */
/* use falling edge to sample 54M to 108M */
tw_indir_writeb(TW5864_INDIR_VD_108_POL, TW5864_INDIR_VD_108_POL_BOTH);
tw_indir_writeb(TW5864_INDIR_CLK0_SEL, 0x00);
tw_indir_writeb(TW5864_INDIR_DDRA_DLL_DQS_SEL0, 0x02);
tw_indir_writeb(TW5864_INDIR_DDRA_DLL_DQS_SEL1, 0x02);
tw_indir_writeb(TW5864_INDIR_DDRA_DLL_CLK90_SEL, 0x02);
tw_indir_writeb(TW5864_INDIR_DDRB_DLL_DQS_SEL0, 0x02);
tw_indir_writeb(TW5864_INDIR_DDRB_DLL_DQS_SEL1, 0x02);
tw_indir_writeb(TW5864_INDIR_DDRB_DLL_CLK90_SEL, 0x02);
/* video input reset */
tw_indir_writeb(TW5864_INDIR_RESET, 0);
tw_indir_writeb(TW5864_INDIR_RESET, TW5864_INDIR_RESET_VD |
TW5864_INDIR_RESET_DLL | TW5864_INDIR_RESET_MUX_CORE);
msleep(20);
/*
* Select Part A mode for all channels.
* tw_setl instead of tw_clearl for Part B mode.
*
* I guess "Part B" is primarily for downscaled version of same channel
* which goes in Part A of same bus
*/
tw_writel(TW5864_FULL_HALF_MODE_SEL, 0);
tw_indir_writeb(TW5864_INDIR_PV_VD_CK_POL,
TW5864_INDIR_PV_VD_CK_POL_VD(0) |
TW5864_INDIR_PV_VD_CK_POL_VD(1) |
TW5864_INDIR_PV_VD_CK_POL_VD(2) |
TW5864_INDIR_PV_VD_CK_POL_VD(3));
spin_lock_irqsave(&dev->slock, flags);
dev->encoder_busy = 0;
dev->h264_buf_r_index = 0;
dev->h264_buf_w_index = 0;
tw_writel(TW5864_VLC_STREAM_BASE_ADDR,
dev->h264_buf[dev->h264_buf_w_index].vlc.dma_addr);
tw_writel(TW5864_MV_STREAM_BASE_ADDR,
dev->h264_buf[dev->h264_buf_w_index].mv.dma_addr);
spin_unlock_irqrestore(&dev->slock, flags);
tw_writel(TW5864_SEN_EN_CH, 0x000f);
tw_writel(TW5864_H264EN_CH_EN, 0x000f);
tw_writel(TW5864_H264EN_BUS0_MAP, 0x00000000);
tw_writel(TW5864_H264EN_BUS1_MAP, 0x00001111);
tw_writel(TW5864_H264EN_BUS2_MAP, 0x00002222);
tw_writel(TW5864_H264EN_BUS3_MAP, 0x00003333);
/*
* Quote from Intersil (manufacturer):
* 0x0038 is managed by HW, and by default it won't pass the pointer set
* at 0x0010. So if you don't do encoding, 0x0038 should stay at '3'
* (with 4 frames in buffer). If you encode one frame and then move
* 0x0010 to '1' for example, HW will take one more frame and set it to
* buffer #0, and then you should see 0x0038 is set to '0'. There is
* only one HW encoder engine, so 4 channels cannot get encoded
* simultaneously. But each channel does have its own buffer (for
* original frames and reconstructed frames). So there is no problem to
* manage encoding for 4 channels at same time and no need to force
* I-frames in switching channels.
* End of quote.
*
* If we set 0x0010 (TW5864_ENC_BUF_PTR_REC1) to 0 (for any channel), we
* have no "rolling" (until we change this value).
* If we set 0x0010 (TW5864_ENC_BUF_PTR_REC1) to 0x3, it starts to roll
* continuously together with 0x0038.
*/
tw_writel(TW5864_ENC_BUF_PTR_REC1, 0x00ff);
tw_writel(TW5864_PCI_INTTM_SCALE, 0);
tw_writel(TW5864_INTERLACING, TW5864_DI_EN);
tw_writel(TW5864_MASTER_ENB_REG, TW5864_PCI_VLC_INTR_ENB);
tw_writel(TW5864_PCI_INTR_CTL,
TW5864_TIMER_INTR_ENB | TW5864_PCI_MAST_ENB |
TW5864_MVD_VLC_MAST_ENB);
dev->irqmask |= TW5864_INTR_VLC_DONE | TW5864_INTR_TIMER;
tw5864_irqmask_apply(dev);
tasklet_init(&dev->tasklet, tw5864_handle_frame_task,
(unsigned long)dev);
for (i = 0; i < TW5864_INPUTS; i++) {
dev->inputs[i].root = dev;
dev->inputs[i].nr = i;
ret = tw5864_video_input_init(&dev->inputs[i], video_nr[i]);
if (ret)
goto fini_video_inputs;
last_input_nr_registered = i;
}
return 0;
fini_video_inputs:
for (i = last_input_nr_registered; i >= 0; i--)
tw5864_video_input_fini(&dev->inputs[i]);
tasklet_kill(&dev->tasklet);
free_dma:
for (i = last_dma_allocated; i >= 0; i--) {
dma_free_coherent(&dev->pci->dev, H264_VLC_BUF_SIZE,
dev->h264_buf[i].vlc.addr,
dev->h264_buf[i].vlc.dma_addr);
dma_free_coherent(&dev->pci->dev, H264_MV_BUF_SIZE,
dev->h264_buf[i].mv.addr,
dev->h264_buf[i].mv.dma_addr);
}
return ret;
}
static int tw5864_video_input_init(struct tw5864_input *input, int video_nr)
{
struct tw5864_dev *dev = input->root;
int ret;
struct v4l2_ctrl_handler *hdl = &input->hdl;
mutex_init(&input->lock);
spin_lock_init(&input->slock);
/* setup video buffers queue */
INIT_LIST_HEAD(&input->active);
input->vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
input->vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
input->vidq.io_modes = VB2_MMAP | VB2_READ | VB2_DMABUF;
input->vidq.ops = &tw5864_video_qops;
input->vidq.mem_ops = &vb2_dma_contig_memops;
input->vidq.drv_priv = input;
input->vidq.gfp_flags = 0;
input->vidq.buf_struct_size = sizeof(struct tw5864_buf);
input->vidq.lock = &input->lock;
input->vidq.min_buffers_needed = 2;
input->vidq.dev = &input->root->pci->dev;
ret = vb2_queue_init(&input->vidq);
if (ret)
goto free_mutex;
input->vdev = tw5864_video_template;
input->vdev.v4l2_dev = &input->root->v4l2_dev;
input->vdev.lock = &input->lock;
input->vdev.queue = &input->vidq;
video_set_drvdata(&input->vdev, input);
/* Initialize the device control structures */
v4l2_ctrl_handler_init(hdl, 6);
v4l2_ctrl_new_std(hdl, &tw5864_ctrl_ops,
V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
v4l2_ctrl_new_std(hdl, &tw5864_ctrl_ops,
V4L2_CID_CONTRAST, 0, 255, 1, 100);
v4l2_ctrl_new_std(hdl, &tw5864_ctrl_ops,
V4L2_CID_SATURATION, 0, 255, 1, 128);
v4l2_ctrl_new_std(hdl, &tw5864_ctrl_ops, V4L2_CID_HUE, -128, 127, 1, 0);
v4l2_ctrl_new_std(hdl, &tw5864_ctrl_ops, V4L2_CID_MPEG_VIDEO_GOP_SIZE,
1, MAX_GOP_SIZE, 1, GOP_SIZE);
v4l2_ctrl_new_std(hdl, &tw5864_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_MIN_QP, 28, 51, 1, QP_VALUE);
v4l2_ctrl_new_std_menu(hdl, &tw5864_ctrl_ops,
V4L2_CID_DETECT_MD_MODE,
V4L2_DETECT_MD_MODE_THRESHOLD_GRID, 0,
V4L2_DETECT_MD_MODE_DISABLED);
v4l2_ctrl_new_std(hdl, &tw5864_ctrl_ops,
V4L2_CID_DETECT_MD_GLOBAL_THRESHOLD,
tw5864_md_thresholds.min, tw5864_md_thresholds.max,
tw5864_md_thresholds.step, tw5864_md_thresholds.def);
input->md_threshold_grid_ctrl =
v4l2_ctrl_new_custom(hdl, &tw5864_md_thresholds, NULL);
if (hdl->error) {
ret = hdl->error;
goto free_v4l2_hdl;
}
input->vdev.ctrl_handler = hdl;
v4l2_ctrl_handler_setup(hdl);
input->qp = QP_VALUE;
input->gop = GOP_SIZE;
input->frame_interval = 1;
ret = video_register_device(&input->vdev, VFL_TYPE_GRABBER, video_nr);
if (ret)
goto free_v4l2_hdl;
dev_info(&input->root->pci->dev, "Registered video device %s\n",
video_device_node_name(&input->vdev));
/*
* Set default video standard. Doesn't matter which, the detected value
* will be found out by VIDIOC_QUERYSTD handler.
*/
input->v4l2_std = V4L2_STD_NTSC_M;
input->std = STD_NTSC;
tw_indir_writeb(TW5864_INDIR_VIN_E(video_nr), 0x07);
/* to initiate auto format recognition */
tw_indir_writeb(TW5864_INDIR_VIN_F(video_nr), 0xff);
return 0;
free_v4l2_hdl:
v4l2_ctrl_handler_free(hdl);
vb2_queue_release(&input->vidq);
free_mutex:
mutex_destroy(&input->lock);
return ret;
}
static void tw5864_video_input_fini(struct tw5864_input *dev)
{
video_unregister_device(&dev->vdev);
v4l2_ctrl_handler_free(&dev->hdl);
vb2_queue_release(&dev->vidq);
}
void tw5864_video_fini(struct tw5864_dev *dev)
{
int i;
tasklet_kill(&dev->tasklet);
for (i = 0; i < TW5864_INPUTS; i++)
tw5864_video_input_fini(&dev->inputs[i]);
for (i = 0; i < H264_BUF_CNT; i++) {
dma_free_coherent(&dev->pci->dev, H264_VLC_BUF_SIZE,
dev->h264_buf[i].vlc.addr,
dev->h264_buf[i].vlc.dma_addr);
dma_free_coherent(&dev->pci->dev, H264_MV_BUF_SIZE,
dev->h264_buf[i].mv.addr,
dev->h264_buf[i].mv.dma_addr);
}
}
void tw5864_prepare_frame_headers(struct tw5864_input *input)
{
struct tw5864_buf *vb = input->vb;
u8 *dst;
size_t dst_space;
unsigned long flags;
if (!vb) {
spin_lock_irqsave(&input->slock, flags);
if (list_empty(&input->active)) {
spin_unlock_irqrestore(&input->slock, flags);
input->vb = NULL;
return;
}
vb = list_first_entry(&input->active, struct tw5864_buf, list);
list_del(&vb->list);
spin_unlock_irqrestore(&input->slock, flags);
}
dst = vb2_plane_vaddr(&vb->vb.vb2_buf, 0);
dst_space = vb2_plane_size(&vb->vb.vb2_buf, 0);
/*
* Low-level bitstream writing functions don't have a fine way to say
* correctly that supplied buffer is too small. So we just check there
* and warn, and don't care at lower level.
* Currently all headers take below 32 bytes.
* The buffer is supposed to have plenty of free space at this point,
* anyway.
*/
if (WARN_ON_ONCE(dst_space < 128))
return;
/*
* Generate H264 headers:
* If this is first frame, put SPS and PPS
*/
if (input->frame_gop_seqno == 0)
tw5864_h264_put_stream_header(&dst, &dst_space, input->qp,
input->width, input->height);
/* Put slice header */
tw5864_h264_put_slice_header(&dst, &dst_space, input->h264_idr_pic_id,
input->frame_gop_seqno,
&input->tail_nb_bits, &input->tail);
input->vb = vb;
input->buf_cur_ptr = dst;
input->buf_cur_space_left = dst_space;
}
/*
* Returns heuristic motion detection metric value from known components of
* hardware-provided Motion Vector Data.
*/
static unsigned int tw5864_md_metric_from_mvd(u32 mvd)
{
/*
* Format of motion vector data exposed by tw5864, according to
* manufacturer:
* mv_x 10 bits
* mv_y 10 bits
* non_zero_members 8 bits
* mb_type 3 bits
* reserved 1 bit
*
* non_zero_members: number of non-zero residuals in each macro block
* after quantization
*
* unsigned int reserved = mvd >> 31;
* unsigned int mb_type = (mvd >> 28) & 0x7;
* unsigned int non_zero_members = (mvd >> 20) & 0xff;
*/
unsigned int mv_y = (mvd >> 10) & 0x3ff;
unsigned int mv_x = mvd & 0x3ff;
/* heuristic: */
mv_x &= 0x0f;
mv_y &= 0x0f;
return mv_y + mv_x;
}
static int tw5864_is_motion_triggered(struct tw5864_h264_frame *frame)
{
struct tw5864_input *input = frame->input;
u32 *mv = (u32 *)frame->mv.addr;
int i;
int detected = 0;
for (i = 0; i < MD_CELLS; i++) {
const u16 thresh = input->md_threshold_grid_values[i];
const unsigned int metric = tw5864_md_metric_from_mvd(mv[i]);
if (metric > thresh)
detected = 1;
if (detected)
break;
}
return detected;
}
static void tw5864_handle_frame_task(unsigned long data)
{
struct tw5864_dev *dev = (struct tw5864_dev *)data;
unsigned long flags;
int batch_size = H264_BUF_CNT;
spin_lock_irqsave(&dev->slock, flags);
while (dev->h264_buf_r_index != dev->h264_buf_w_index && batch_size--) {
struct tw5864_h264_frame *frame =
&dev->h264_buf[dev->h264_buf_r_index];
spin_unlock_irqrestore(&dev->slock, flags);
dma_sync_single_for_cpu(&dev->pci->dev, frame->vlc.dma_addr,
H264_VLC_BUF_SIZE, DMA_FROM_DEVICE);
dma_sync_single_for_cpu(&dev->pci->dev, frame->mv.dma_addr,
H264_MV_BUF_SIZE, DMA_FROM_DEVICE);
tw5864_handle_frame(frame);
dma_sync_single_for_device(&dev->pci->dev, frame->vlc.dma_addr,
H264_VLC_BUF_SIZE, DMA_FROM_DEVICE);
dma_sync_single_for_device(&dev->pci->dev, frame->mv.dma_addr,
H264_MV_BUF_SIZE, DMA_FROM_DEVICE);
spin_lock_irqsave(&dev->slock, flags);
dev->h264_buf_r_index++;
dev->h264_buf_r_index %= H264_BUF_CNT;
}
spin_unlock_irqrestore(&dev->slock, flags);
}
#ifdef DEBUG
static u32 tw5864_vlc_checksum(u32 *data, int len)
{
u32 val, count_len = len;
val = *data++;
while (((count_len >> 2) - 1) > 0) {
val ^= *data++;
count_len -= 4;
}
val ^= htonl((len >> 2));
return val;
}
#endif
static void tw5864_handle_frame(struct tw5864_h264_frame *frame)
{
#define SKIP_VLCBUF_BYTES 3
struct tw5864_input *input = frame->input;
struct tw5864_dev *dev = input->root;
struct tw5864_buf *vb;
struct vb2_v4l2_buffer *v4l2_buf;
int frame_len = frame->vlc_len - SKIP_VLCBUF_BYTES;
u8 *dst = input->buf_cur_ptr;
u8 tail_mask, vlc_mask = 0;
int i;
u8 vlc_first_byte = ((u8 *)(frame->vlc.addr + SKIP_VLCBUF_BYTES))[0];
unsigned long flags;
int zero_run;
u8 *src;
u8 *src_end;
#ifdef DEBUG
if (frame->checksum !=
tw5864_vlc_checksum((u32 *)frame->vlc.addr, frame_len))
dev_err(&dev->pci->dev,
"Checksum of encoded frame doesn't match!\n");
#endif
spin_lock_irqsave(&input->slock, flags);
vb = input->vb;
input->vb = NULL;
spin_unlock_irqrestore(&input->slock, flags);
v4l2_buf = to_vb2_v4l2_buffer(&vb->vb.vb2_buf);
if (!vb) { /* Gone because of disabling */
dev_dbg(&dev->pci->dev, "vb is empty, dropping frame\n");
return;
}
/*
* Check for space.
* Mind the overhead of startcode emulation prevention.
*/
if (input->buf_cur_space_left < frame_len * 5 / 4) {
dev_err_once(&dev->pci->dev,
"Left space in vb2 buffer, %d bytes, is less than considered safely enough to put frame of length %d. Dropping this frame.\n",
input->buf_cur_space_left, frame_len);
return;
}
for (i = 0; i < 8 - input->tail_nb_bits; i++)
vlc_mask |= 1 << i;
tail_mask = (~vlc_mask) & 0xff;
dst[0] = (input->tail & tail_mask) | (vlc_first_byte & vlc_mask);
frame_len--;
dst++;
/* H.264 startcode emulation prevention */
src = frame->vlc.addr + SKIP_VLCBUF_BYTES + 1;
src_end = src + frame_len;
zero_run = 0;
for (; src < src_end; src++) {
if (zero_run < 2) {
if (*src == 0)
++zero_run;
else
zero_run = 0;
} else {
if ((*src & ~0x03) == 0)
*dst++ = 0x03;
zero_run = *src == 0;
}
*dst++ = *src;
}
vb2_set_plane_payload(&vb->vb.vb2_buf, 0,
dst - (u8 *)vb2_plane_vaddr(&vb->vb.vb2_buf, 0));
vb->vb.vb2_buf.timestamp = frame->timestamp;
v4l2_buf->field = V4L2_FIELD_INTERLACED;
v4l2_buf->sequence = frame->seqno;
/* Check for motion flags */
if (frame->gop_seqno /* P-frame */ &&
tw5864_is_motion_triggered(frame)) {
struct v4l2_event ev = {
.type = V4L2_EVENT_MOTION_DET,
.u.motion_det = {
.flags = V4L2_EVENT_MD_FL_HAVE_FRAME_SEQ,
.frame_sequence = v4l2_buf->sequence,
},
};
v4l2_event_queue(&input->vdev, &ev);
}
vb2_buffer_done(&vb->vb.vb2_buf, VB2_BUF_STATE_DONE);
}
static v4l2_std_id tw5864_get_v4l2_std(enum tw5864_vid_std std)
{
switch (std) {
case STD_NTSC: return V4L2_STD_NTSC_M;
case STD_PAL: return V4L2_STD_PAL_B;
case STD_SECAM: return V4L2_STD_SECAM_B;
case STD_NTSC443: return V4L2_STD_NTSC_443;
case STD_PAL_M: return V4L2_STD_PAL_M;
case STD_PAL_CN: return V4L2_STD_PAL_Nc;
case STD_PAL_60: return V4L2_STD_PAL_60;
case STD_INVALID: return V4L2_STD_UNKNOWN;
}
return 0;
}
static enum tw5864_vid_std tw5864_from_v4l2_std(v4l2_std_id v4l2_std)
{
if (v4l2_std & V4L2_STD_NTSC_M)
return STD_NTSC;
if (v4l2_std & V4L2_STD_PAL_B)
return STD_PAL;
if (v4l2_std & V4L2_STD_SECAM_B)
return STD_SECAM;
if (v4l2_std & V4L2_STD_NTSC_443)
return STD_NTSC443;
if (v4l2_std & V4L2_STD_PAL_M)
return STD_PAL_M;
if (v4l2_std & V4L2_STD_PAL_Nc)
return STD_PAL_CN;
if (v4l2_std & V4L2_STD_PAL_60)
return STD_PAL_60;
return STD_INVALID;
}
static void tw5864_encoder_tables_upload(struct tw5864_dev *dev)
{
int i;
tw_writel(TW5864_VLC_RD, 0x1);
for (i = 0; i < VLC_LOOKUP_TABLE_LEN; i++) {
tw_writel((TW5864_VLC_STREAM_MEM_START + i * 4),
encoder_vlc_lookup_table[i]);
}
tw_writel(TW5864_VLC_RD, 0x0);
for (i = 0; i < QUANTIZATION_TABLE_LEN; i++) {
tw_writel((TW5864_QUAN_TAB + i * 4),
forward_quantization_table[i]);
}
for (i = 0; i < QUANTIZATION_TABLE_LEN; i++) {
tw_writel((TW5864_QUAN_TAB + i * 4),
inverse_quantization_table[i]);
}
}
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