diff options
Diffstat (limited to 'drivers/media/pci/tw5864/tw5864-video.c')
-rw-r--r-- | drivers/media/pci/tw5864/tw5864-video.c | 1514 |
1 files changed, 1514 insertions, 0 deletions
diff --git a/drivers/media/pci/tw5864/tw5864-video.c b/drivers/media/pci/tw5864/tw5864-video.c new file mode 100644 index 0000000000..197ed89781 --- /dev/null +++ b/drivers/media/pci/tw5864/tw5864-video.c @@ -0,0 +1,1514 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * TW5864 driver - video encoding functions + * + * Copyright (C) 2016 Bluecherry, LLC <maintainers@bluecherrydvr.com> + */ + +#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(struct tasklet_struct *t); +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); + + strscpy(cap->driver, "tw5864", sizeof(cap->driver)); + snprintf(cap->card, sizeof(cap->card), "TW5864 Encoder %d", + input->nr); + 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); + if (ret) + return ret; + + 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); + if (ret) + return ret; + + 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_setup(&dev->tasklet, tw5864_handle_frame_task); + + 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_VIDEO, 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); +free_mutex: + mutex_destroy(&input->lock); + + return ret; +} + +static void tw5864_video_input_fini(struct tw5864_input *dev) +{ + vb2_video_unregister_device(&dev->vdev); + v4l2_ctrl_handler_free(&dev->hdl); +} + +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(struct tasklet_struct *t) +{ + struct tw5864_dev *dev = from_tasklet(dev, t, tasklet); + 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); + + if (!vb) { /* Gone because of disabling */ + dev_dbg(&dev->pci->dev, "vb is empty, dropping frame\n"); + return; + } + + v4l2_buf = to_vb2_v4l2_buffer(&vb->vb.vb2_buf); + + /* + * 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]); + } +} |