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kernel/drivers/media/platform/allegro-dvt/allegro-core.c

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init repo.
2024-07-22 17:22:30 +08:00
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2019 Pengutronix, Michael Tretter <kernel@pengutronix.de>
*
* Allegro DVT video encoder driver
*/
#include <linux/bits.h>
#include <linux/firmware.h>
#include <linux/gcd.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/kernel.h>
#include <linux/log2.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/sizes.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-dma-contig.h>
#include <media/videobuf2-v4l2.h>
#include "allegro-mail.h"
#include "nal-h264.h"
#include "nal-hevc.h"
/*
* Support up to 4k video streams. The hardware actually supports higher
* resolutions, which are specified in PG252 June 6, 2018 (H.264/H.265 Video
* Codec Unit v1.1) Chapter 3.
*/
#define ALLEGRO_WIDTH_MIN 128
#define ALLEGRO_WIDTH_DEFAULT 1920
#define ALLEGRO_WIDTH_MAX 3840
#define ALLEGRO_HEIGHT_MIN 64
#define ALLEGRO_HEIGHT_DEFAULT 1080
#define ALLEGRO_HEIGHT_MAX 2160
#define ALLEGRO_FRAMERATE_DEFAULT ((struct v4l2_fract) { 30, 1 })
#define ALLEGRO_GOP_SIZE_DEFAULT 25
#define ALLEGRO_GOP_SIZE_MAX 1000
/*
* MCU Control Registers
*
* The Zynq UltraScale+ Devices Register Reference documents the registers
* with an offset of 0x9000, which equals the size of the SRAM and one page
* gap. The driver handles SRAM and registers separately and, therefore, is
* oblivious of the offset.
*/
#define AL5_MCU_RESET 0x0000
#define AL5_MCU_RESET_SOFT BIT(0)
#define AL5_MCU_RESET_REGS BIT(1)
#define AL5_MCU_RESET_MODE 0x0004
#define AL5_MCU_RESET_MODE_SLEEP BIT(0)
#define AL5_MCU_RESET_MODE_HALT BIT(1)
#define AL5_MCU_STA 0x0008
#define AL5_MCU_STA_SLEEP BIT(0)
#define AL5_MCU_WAKEUP 0x000c
#define AL5_ICACHE_ADDR_OFFSET_MSB 0x0010
#define AL5_ICACHE_ADDR_OFFSET_LSB 0x0014
#define AL5_DCACHE_ADDR_OFFSET_MSB 0x0018
#define AL5_DCACHE_ADDR_OFFSET_LSB 0x001c
#define AL5_MCU_INTERRUPT 0x0100
#define AL5_ITC_CPU_IRQ_MSK 0x0104
#define AL5_ITC_CPU_IRQ_CLR 0x0108
#define AL5_ITC_CPU_IRQ_STA 0x010C
#define AL5_ITC_CPU_IRQ_STA_TRIGGERED BIT(0)
#define AXI_ADDR_OFFSET_IP 0x0208
/*
* The MCU accesses the system memory with a 2G offset compared to CPU
* physical addresses.
*/
#define MCU_CACHE_OFFSET SZ_2G
/*
* The driver needs to reserve some space at the beginning of capture buffers,
* because it needs to write SPS/PPS NAL units. The encoder writes the actual
* frame data after the offset.
*/
#define ENCODER_STREAM_OFFSET SZ_128
#define SIZE_MACROBLOCK 16
/* Encoding options */
#define LOG2_MAX_FRAME_NUM 4
#define LOG2_MAX_PIC_ORDER_CNT 10
#define BETA_OFFSET_DIV_2 -1
#define TC_OFFSET_DIV_2 -1
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-2)");
struct allegro_buffer {
void *vaddr;
dma_addr_t paddr;
size_t size;
struct list_head head;
};
struct allegro_dev;
struct allegro_channel;
struct allegro_mbox {
struct allegro_dev *dev;
unsigned int head;
unsigned int tail;
unsigned int data;
size_t size;
/* protect mailbox from simultaneous accesses */
struct mutex lock;
};
struct allegro_dev {
struct v4l2_device v4l2_dev;
struct video_device video_dev;
struct v4l2_m2m_dev *m2m_dev;
struct platform_device *plat_dev;
/* mutex protecting vb2_queue structure */
struct mutex lock;
struct regmap *regmap;
struct regmap *sram;
const struct fw_info *fw_info;
struct allegro_buffer firmware;
struct allegro_buffer suballocator;
struct completion init_complete;
/* The mailbox interface */
struct allegro_mbox *mbox_command;
struct allegro_mbox *mbox_status;
/*
* The downstream driver limits the users to 64 users, thus I can use
* a bitfield for the user_ids that are in use. See also user_id in
* struct allegro_channel.
*/
unsigned long channel_user_ids;
struct list_head channels;
};
static struct regmap_config allegro_regmap_config = {
.name = "regmap",
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.max_register = 0xfff,
.cache_type = REGCACHE_NONE,
};
static struct regmap_config allegro_sram_config = {
.name = "sram",
.reg_bits = 32,
.val_bits = 32,
.reg_stride = 4,
.max_register = 0x7fff,
.cache_type = REGCACHE_NONE,
};
#define fh_to_channel(__fh) container_of(__fh, struct allegro_channel, fh)
struct allegro_channel {
struct allegro_dev *dev;
struct v4l2_fh fh;
struct v4l2_ctrl_handler ctrl_handler;
unsigned int width;
unsigned int height;
unsigned int stride;
struct v4l2_fract framerate;
enum v4l2_colorspace colorspace;
enum v4l2_ycbcr_encoding ycbcr_enc;
enum v4l2_quantization quantization;
enum v4l2_xfer_func xfer_func;
u32 pixelformat;
unsigned int sizeimage_raw;
unsigned int osequence;
u32 codec;
unsigned int sizeimage_encoded;
unsigned int csequence;
bool frame_rc_enable;
unsigned int bitrate;
unsigned int bitrate_peak;
struct allegro_buffer config_blob;
unsigned int log2_max_frame_num;
bool temporal_mvp_enable;
bool enable_loop_filter_across_tiles;
bool enable_loop_filter_across_slices;
bool enable_deblocking_filter_override;
bool enable_reordering;
bool dbf_ovr_en;
unsigned int num_ref_idx_l0;
unsigned int num_ref_idx_l1;
/* Maximum range for motion estimation */
int b_hrz_me_range;
int b_vrt_me_range;
int p_hrz_me_range;
int p_vrt_me_range;
/* Size limits of coding unit */
int min_cu_size;
int max_cu_size;
/* Size limits of transform unit */
int min_tu_size;
int max_tu_size;
int max_transfo_depth_intra;
int max_transfo_depth_inter;
struct v4l2_ctrl *mpeg_video_h264_profile;
struct v4l2_ctrl *mpeg_video_h264_level;
struct v4l2_ctrl *mpeg_video_h264_i_frame_qp;
struct v4l2_ctrl *mpeg_video_h264_max_qp;
struct v4l2_ctrl *mpeg_video_h264_min_qp;
struct v4l2_ctrl *mpeg_video_h264_p_frame_qp;
struct v4l2_ctrl *mpeg_video_h264_b_frame_qp;
struct v4l2_ctrl *mpeg_video_hevc_profile;
struct v4l2_ctrl *mpeg_video_hevc_level;
struct v4l2_ctrl *mpeg_video_hevc_tier;
struct v4l2_ctrl *mpeg_video_hevc_i_frame_qp;
struct v4l2_ctrl *mpeg_video_hevc_max_qp;
struct v4l2_ctrl *mpeg_video_hevc_min_qp;
struct v4l2_ctrl *mpeg_video_hevc_p_frame_qp;
struct v4l2_ctrl *mpeg_video_hevc_b_frame_qp;
struct v4l2_ctrl *mpeg_video_frame_rc_enable;
struct { /* video bitrate mode control cluster */
struct v4l2_ctrl *mpeg_video_bitrate_mode;
struct v4l2_ctrl *mpeg_video_bitrate;
struct v4l2_ctrl *mpeg_video_bitrate_peak;
};
struct v4l2_ctrl *mpeg_video_cpb_size;
struct v4l2_ctrl *mpeg_video_gop_size;
/* user_id is used to identify the channel during CREATE_CHANNEL */
/* not sure, what to set here and if this is actually required */
int user_id;
/* channel_id is set by the mcu and used by all later commands */
int mcu_channel_id;
struct list_head buffers_reference;
struct list_head buffers_intermediate;
struct list_head source_shadow_list;
struct list_head stream_shadow_list;
/* protect shadow lists of buffers passed to firmware */
struct mutex shadow_list_lock;
struct list_head list;
struct completion completion;
unsigned int error;
};
static inline int
allegro_channel_get_i_frame_qp(struct allegro_channel *channel)
{
if (channel->codec == V4L2_PIX_FMT_HEVC)
return v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_i_frame_qp);
else
return v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_i_frame_qp);
}
static inline int
allegro_channel_get_p_frame_qp(struct allegro_channel *channel)
{
if (channel->codec == V4L2_PIX_FMT_HEVC)
return v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_p_frame_qp);
else
return v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_p_frame_qp);
}
static inline int
allegro_channel_get_b_frame_qp(struct allegro_channel *channel)
{
if (channel->codec == V4L2_PIX_FMT_HEVC)
return v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_b_frame_qp);
else
return v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_b_frame_qp);
}
static inline int
allegro_channel_get_min_qp(struct allegro_channel *channel)
{
if (channel->codec == V4L2_PIX_FMT_HEVC)
return v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_min_qp);
else
return v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_min_qp);
}
static inline int
allegro_channel_get_max_qp(struct allegro_channel *channel)
{
if (channel->codec == V4L2_PIX_FMT_HEVC)
return v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_max_qp);
else
return v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_max_qp);
}
struct allegro_m2m_buffer {
struct v4l2_m2m_buffer buf;
struct list_head head;
};
#define to_allegro_m2m_buffer(__buf) \
container_of(__buf, struct allegro_m2m_buffer, buf)
struct fw_info {
unsigned int id;
unsigned int id_codec;
char *version;
unsigned int mailbox_cmd;
unsigned int mailbox_status;
size_t mailbox_size;
enum mcu_msg_version mailbox_version;
size_t suballocator_size;
};
static const struct fw_info supported_firmware[] = {
{
.id = 18296,
.id_codec = 96272,
.version = "v2018.2",
.mailbox_cmd = 0x7800,
.mailbox_status = 0x7c00,
.mailbox_size = 0x400 - 0x8,
.mailbox_version = MCU_MSG_VERSION_2018_2,
.suballocator_size = SZ_16M,
}, {
.id = 14680,
.id_codec = 126572,
.version = "v2019.2",
.mailbox_cmd = 0x7000,
.mailbox_status = 0x7800,
.mailbox_size = 0x800 - 0x8,
.mailbox_version = MCU_MSG_VERSION_2019_2,
.suballocator_size = SZ_32M,
},
};
static inline u32 to_mcu_addr(struct allegro_dev *dev, dma_addr_t phys)
{
if (upper_32_bits(phys) || (lower_32_bits(phys) & MCU_CACHE_OFFSET))
v4l2_warn(&dev->v4l2_dev,
"address %pad is outside mcu window\n", &phys);
return lower_32_bits(phys) | MCU_CACHE_OFFSET;
}
static inline u32 to_mcu_size(struct allegro_dev *dev, size_t size)
{
return lower_32_bits(size);
}
static inline u32 to_codec_addr(struct allegro_dev *dev, dma_addr_t phys)
{
if (upper_32_bits(phys))
v4l2_warn(&dev->v4l2_dev,
"address %pad cannot be used by codec\n", &phys);
return lower_32_bits(phys);
}
static inline u64 ptr_to_u64(const void *ptr)
{
return (uintptr_t)ptr;
}
/* Helper functions for channel and user operations */
static unsigned long allegro_next_user_id(struct allegro_dev *dev)
{
if (dev->channel_user_ids == ~0UL)
return -EBUSY;
return ffz(dev->channel_user_ids);
}
static struct allegro_channel *
allegro_find_channel_by_user_id(struct allegro_dev *dev,
unsigned int user_id)
{
struct allegro_channel *channel;
list_for_each_entry(channel, &dev->channels, list) {
if (channel->user_id == user_id)
return channel;
}
return ERR_PTR(-EINVAL);
}
static struct allegro_channel *
allegro_find_channel_by_channel_id(struct allegro_dev *dev,
unsigned int channel_id)
{
struct allegro_channel *channel;
list_for_each_entry(channel, &dev->channels, list) {
if (channel->mcu_channel_id == channel_id)
return channel;
}
return ERR_PTR(-EINVAL);
}
static inline bool channel_exists(struct allegro_channel *channel)
{
return channel->mcu_channel_id != -1;
}
#define AL_ERROR 0x80
#define AL_ERR_INIT_FAILED 0x81
#define AL_ERR_NO_FRAME_DECODED 0x82
#define AL_ERR_RESOLUTION_CHANGE 0x85
#define AL_ERR_NO_MEMORY 0x87
#define AL_ERR_STREAM_OVERFLOW 0x88
#define AL_ERR_TOO_MANY_SLICES 0x89
#define AL_ERR_BUF_NOT_READY 0x8c
#define AL_ERR_NO_CHANNEL_AVAILABLE 0x8d
#define AL_ERR_RESOURCE_UNAVAILABLE 0x8e
#define AL_ERR_NOT_ENOUGH_CORES 0x8f
#define AL_ERR_REQUEST_MALFORMED 0x90
#define AL_ERR_CMD_NOT_ALLOWED 0x91
#define AL_ERR_INVALID_CMD_VALUE 0x92
static inline const char *allegro_err_to_string(unsigned int err)
{
switch (err) {
case AL_ERR_INIT_FAILED:
return "initialization failed";
case AL_ERR_NO_FRAME_DECODED:
return "no frame decoded";
case AL_ERR_RESOLUTION_CHANGE:
return "resolution change";
case AL_ERR_NO_MEMORY:
return "out of memory";
case AL_ERR_STREAM_OVERFLOW:
return "stream buffer overflow";
case AL_ERR_TOO_MANY_SLICES:
return "too many slices";
case AL_ERR_BUF_NOT_READY:
return "buffer not ready";
case AL_ERR_NO_CHANNEL_AVAILABLE:
return "no channel available";
case AL_ERR_RESOURCE_UNAVAILABLE:
return "resource unavailable";
case AL_ERR_NOT_ENOUGH_CORES:
return "not enough cores";
case AL_ERR_REQUEST_MALFORMED:
return "request malformed";
case AL_ERR_CMD_NOT_ALLOWED:
return "command not allowed";
case AL_ERR_INVALID_CMD_VALUE:
return "invalid command value";
case AL_ERROR:
default:
return "unknown error";
}
}
static unsigned int estimate_stream_size(unsigned int width,
unsigned int height)
{
unsigned int offset = ENCODER_STREAM_OFFSET;
unsigned int num_blocks = DIV_ROUND_UP(width, SIZE_MACROBLOCK) *
DIV_ROUND_UP(height, SIZE_MACROBLOCK);
unsigned int pcm_size = SZ_256;
unsigned int partition_table = SZ_256;
return round_up(offset + num_blocks * pcm_size + partition_table, 32);
}
static enum v4l2_mpeg_video_h264_level
select_minimum_h264_level(unsigned int width, unsigned int height)
{
unsigned int pic_width_in_mb = DIV_ROUND_UP(width, SIZE_MACROBLOCK);
unsigned int frame_height_in_mb = DIV_ROUND_UP(height, SIZE_MACROBLOCK);
unsigned int frame_size_in_mb = pic_width_in_mb * frame_height_in_mb;
enum v4l2_mpeg_video_h264_level level = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
/*
* The level limits are specified in Rec. ITU-T H.264 Annex A.3.1 and
* also specify limits regarding bit rate and CBP size. Only approximate
* the levels using the frame size.
*
* Level 5.1 allows up to 4k video resolution.
*/
if (frame_size_in_mb <= 99)
level = V4L2_MPEG_VIDEO_H264_LEVEL_1_0;
else if (frame_size_in_mb <= 396)
level = V4L2_MPEG_VIDEO_H264_LEVEL_1_1;
else if (frame_size_in_mb <= 792)
level = V4L2_MPEG_VIDEO_H264_LEVEL_2_1;
else if (frame_size_in_mb <= 1620)
level = V4L2_MPEG_VIDEO_H264_LEVEL_2_2;
else if (frame_size_in_mb <= 3600)
level = V4L2_MPEG_VIDEO_H264_LEVEL_3_1;
else if (frame_size_in_mb <= 5120)
level = V4L2_MPEG_VIDEO_H264_LEVEL_3_2;
else if (frame_size_in_mb <= 8192)
level = V4L2_MPEG_VIDEO_H264_LEVEL_4_0;
else if (frame_size_in_mb <= 8704)
level = V4L2_MPEG_VIDEO_H264_LEVEL_4_2;
else if (frame_size_in_mb <= 22080)
level = V4L2_MPEG_VIDEO_H264_LEVEL_5_0;
else
level = V4L2_MPEG_VIDEO_H264_LEVEL_5_1;
return level;
}
static unsigned int h264_maximum_bitrate(enum v4l2_mpeg_video_h264_level level)
{
switch (level) {
case V4L2_MPEG_VIDEO_H264_LEVEL_1_0:
return 64000;
case V4L2_MPEG_VIDEO_H264_LEVEL_1B:
return 128000;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_1:
return 192000;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_2:
return 384000;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_3:
return 768000;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_0:
return 2000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_1:
return 4000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_2:
return 4000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_0:
return 10000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
return 14000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
return 20000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
return 20000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_1:
return 50000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_2:
return 50000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_5_0:
return 135000000;
case V4L2_MPEG_VIDEO_H264_LEVEL_5_1:
default:
return 240000000;
}
}
static unsigned int h264_maximum_cpb_size(enum v4l2_mpeg_video_h264_level level)
{
switch (level) {
case V4L2_MPEG_VIDEO_H264_LEVEL_1_0:
return 175;
case V4L2_MPEG_VIDEO_H264_LEVEL_1B:
return 350;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_1:
return 500;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_2:
return 1000;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_3:
return 2000;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_0:
return 2000;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_1:
return 4000;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_2:
return 4000;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_0:
return 10000;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
return 14000;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
return 20000;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
return 25000;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_1:
return 62500;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_2:
return 62500;
case V4L2_MPEG_VIDEO_H264_LEVEL_5_0:
return 135000;
case V4L2_MPEG_VIDEO_H264_LEVEL_5_1:
default:
return 240000;
}
}
static enum v4l2_mpeg_video_hevc_level
select_minimum_hevc_level(unsigned int width, unsigned int height)
{
unsigned int luma_picture_size = width * height;
enum v4l2_mpeg_video_hevc_level level;
if (luma_picture_size <= 36864)
level = V4L2_MPEG_VIDEO_HEVC_LEVEL_1;
else if (luma_picture_size <= 122880)
level = V4L2_MPEG_VIDEO_HEVC_LEVEL_2;
else if (luma_picture_size <= 245760)
level = V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1;
else if (luma_picture_size <= 552960)
level = V4L2_MPEG_VIDEO_HEVC_LEVEL_3;
else if (luma_picture_size <= 983040)
level = V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1;
else if (luma_picture_size <= 2228224)
level = V4L2_MPEG_VIDEO_HEVC_LEVEL_4;
else if (luma_picture_size <= 8912896)
level = V4L2_MPEG_VIDEO_HEVC_LEVEL_5;
else
level = V4L2_MPEG_VIDEO_HEVC_LEVEL_6;
return level;
}
static unsigned int hevc_maximum_bitrate(enum v4l2_mpeg_video_hevc_level level)
{
/*
* See Rec. ITU-T H.265 v5 (02/2018), A.4.2 Profile-specific level
* limits for the video profiles.
*/
switch (level) {
case V4L2_MPEG_VIDEO_HEVC_LEVEL_1:
return 128;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_2:
return 1500;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1:
return 3000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_3:
return 6000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1:
return 10000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_4:
return 12000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1:
return 20000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_5:
return 25000;
default:
case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1:
return 40000;
}
}
static unsigned int hevc_maximum_cpb_size(enum v4l2_mpeg_video_hevc_level level)
{
switch (level) {
case V4L2_MPEG_VIDEO_HEVC_LEVEL_1:
return 350;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_2:
return 1500;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1:
return 3000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_3:
return 6000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1:
return 10000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_4:
return 12000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1:
return 20000;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_5:
return 25000;
default:
case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1:
return 40000;
}
}
static const struct fw_info *
allegro_get_firmware_info(struct allegro_dev *dev,
const struct firmware *fw,
const struct firmware *fw_codec)
{
int i;
unsigned int id = fw->size;
unsigned int id_codec = fw_codec->size;
for (i = 0; i < ARRAY_SIZE(supported_firmware); i++)
if (supported_firmware[i].id == id &&
supported_firmware[i].id_codec == id_codec)
return &supported_firmware[i];
return NULL;
}
/*
* Buffers that are used internally by the MCU.
*/
static int allegro_alloc_buffer(struct allegro_dev *dev,
struct allegro_buffer *buffer, size_t size)
{
buffer->vaddr = dma_alloc_coherent(&dev->plat_dev->dev, size,
&buffer->paddr, GFP_KERNEL);
if (!buffer->vaddr)
return -ENOMEM;
buffer->size = size;
return 0;
}
static void allegro_free_buffer(struct allegro_dev *dev,
struct allegro_buffer *buffer)
{
if (buffer->vaddr) {
dma_free_coherent(&dev->plat_dev->dev, buffer->size,
buffer->vaddr, buffer->paddr);
buffer->vaddr = NULL;
buffer->size = 0;
}
}
/*
* Mailbox interface to send messages to the MCU.
*/
static void allegro_mcu_interrupt(struct allegro_dev *dev);
static void allegro_handle_message(struct allegro_dev *dev,
union mcu_msg_response *msg);
static struct allegro_mbox *allegro_mbox_init(struct allegro_dev *dev,
unsigned int base, size_t size)
{
struct allegro_mbox *mbox;
mbox = devm_kmalloc(&dev->plat_dev->dev, sizeof(*mbox), GFP_KERNEL);
if (!mbox)
return ERR_PTR(-ENOMEM);
mbox->dev = dev;
mbox->head = base;
mbox->tail = base + 0x4;
mbox->data = base + 0x8;
mbox->size = size;
mutex_init(&mbox->lock);
regmap_write(dev->sram, mbox->head, 0);
regmap_write(dev->sram, mbox->tail, 0);
return mbox;
}
static int allegro_mbox_write(struct allegro_mbox *mbox,
const u32 *src, size_t size)
{
struct regmap *sram = mbox->dev->sram;
unsigned int tail;
size_t size_no_wrap;
int err = 0;
int stride = regmap_get_reg_stride(sram);
if (!src)
return -EINVAL;
if (size > mbox->size)
return -EINVAL;
mutex_lock(&mbox->lock);
regmap_read(sram, mbox->tail, &tail);
if (tail > mbox->size) {
err = -EIO;
goto out;
}
size_no_wrap = min(size, mbox->size - (size_t)tail);
regmap_bulk_write(sram, mbox->data + tail,
src, size_no_wrap / stride);
regmap_bulk_write(sram, mbox->data,
src + (size_no_wrap / sizeof(*src)),
(size - size_no_wrap) / stride);
regmap_write(sram, mbox->tail, (tail + size) % mbox->size);
out:
mutex_unlock(&mbox->lock);
return err;
}
static ssize_t allegro_mbox_read(struct allegro_mbox *mbox,
u32 *dst, size_t nbyte)
{
struct {
u16 length;
u16 type;
} __attribute__ ((__packed__)) *header;
struct regmap *sram = mbox->dev->sram;
unsigned int head;
ssize_t size;
size_t body_no_wrap;
int stride = regmap_get_reg_stride(sram);
regmap_read(sram, mbox->head, &head);
if (head > mbox->size)
return -EIO;
/* Assume that the header does not wrap. */
regmap_bulk_read(sram, mbox->data + head,
dst, sizeof(*header) / stride);
header = (void *)dst;
size = header->length + sizeof(*header);
if (size > mbox->size || size & 0x3)
return -EIO;
if (size > nbyte)
return -EINVAL;
/*
* The message might wrap within the mailbox. If the message does not
* wrap, the first read will read the entire message, otherwise the
* first read will read message until the end of the mailbox and the
* second read will read the remaining bytes from the beginning of the
* mailbox.
*
* Skip the header, as was already read to get the size of the body.
*/
body_no_wrap = min((size_t)header->length,
(size_t)(mbox->size - (head + sizeof(*header))));
regmap_bulk_read(sram, mbox->data + head + sizeof(*header),
dst + (sizeof(*header) / sizeof(*dst)),
body_no_wrap / stride);
regmap_bulk_read(sram, mbox->data,
dst + (sizeof(*header) + body_no_wrap) / sizeof(*dst),
(header->length - body_no_wrap) / stride);
regmap_write(sram, mbox->head, (head + size) % mbox->size);
return size;
}
/**
* allegro_mbox_send() - Send a message via the mailbox
* @mbox: the mailbox which is used to send the message
* @msg: the message to send
*/
static int allegro_mbox_send(struct allegro_mbox *mbox, void *msg)
{
struct allegro_dev *dev = mbox->dev;
ssize_t size;
int err;
u32 *tmp;
tmp = kzalloc(mbox->size, GFP_KERNEL);
if (!tmp) {
err = -ENOMEM;
goto out;
}
size = allegro_encode_mail(tmp, msg);
err = allegro_mbox_write(mbox, tmp, size);
kfree(tmp);
if (err)
goto out;
allegro_mcu_interrupt(dev);
out:
return err;
}
/**
* allegro_mbox_notify() - Notify the mailbox about a new message
* @mbox: The allegro_mbox to notify
*/
static void allegro_mbox_notify(struct allegro_mbox *mbox)
{
struct allegro_dev *dev = mbox->dev;
union mcu_msg_response *msg;
ssize_t size;
u32 *tmp;
int err;
msg = kmalloc(sizeof(*msg), GFP_KERNEL);
if (!msg)
return;
msg->header.version = dev->fw_info->mailbox_version;
tmp = kmalloc(mbox->size, GFP_KERNEL);
if (!tmp)
goto out;
size = allegro_mbox_read(mbox, tmp, mbox->size);
if (size < 0)
goto out;
err = allegro_decode_mail(msg, tmp);
if (err)
goto out;
allegro_handle_message(dev, msg);
out:
kfree(tmp);
kfree(msg);
}
static void allegro_mcu_send_init(struct allegro_dev *dev,
dma_addr_t suballoc_dma, size_t suballoc_size)
{
struct mcu_msg_init_request msg;
memset(&msg, 0, sizeof(msg));
msg.header.type = MCU_MSG_TYPE_INIT;
msg.header.version = dev->fw_info->mailbox_version;
msg.suballoc_dma = to_mcu_addr(dev, suballoc_dma);
msg.suballoc_size = to_mcu_size(dev, suballoc_size);
/* disable L2 cache */
msg.l2_cache[0] = -1;
msg.l2_cache[1] = -1;
msg.l2_cache[2] = -1;
allegro_mbox_send(dev->mbox_command, &msg);
}
static u32 v4l2_pixelformat_to_mcu_format(u32 pixelformat)
{
switch (pixelformat) {
case V4L2_PIX_FMT_NV12:
/* AL_420_8BITS: 0x100 -> NV12, 0x88 -> 8 bit */
return 0x100 | 0x88;
default:
return -EINVAL;
}
}
static u32 v4l2_colorspace_to_mcu_colorspace(enum v4l2_colorspace colorspace)
{
switch (colorspace) {
case V4L2_COLORSPACE_REC709:
return 2;
case V4L2_COLORSPACE_SMPTE170M:
return 3;
case V4L2_COLORSPACE_SMPTE240M:
return 4;
case V4L2_COLORSPACE_SRGB:
return 7;
default:
/* UNKNOWN */
return 0;
}
}
static u8 v4l2_profile_to_mcu_profile(enum v4l2_mpeg_video_h264_profile profile)
{
switch (profile) {
case V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE:
default:
return 66;
}
}
static u16 v4l2_level_to_mcu_level(enum v4l2_mpeg_video_h264_level level)
{
switch (level) {
case V4L2_MPEG_VIDEO_H264_LEVEL_1_0:
return 10;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_1:
return 11;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_2:
return 12;
case V4L2_MPEG_VIDEO_H264_LEVEL_1_3:
return 13;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_0:
return 20;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_1:
return 21;
case V4L2_MPEG_VIDEO_H264_LEVEL_2_2:
return 22;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_0:
return 30;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_1:
return 31;
case V4L2_MPEG_VIDEO_H264_LEVEL_3_2:
return 32;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_0:
return 40;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_1:
return 41;
case V4L2_MPEG_VIDEO_H264_LEVEL_4_2:
return 42;
case V4L2_MPEG_VIDEO_H264_LEVEL_5_0:
return 50;
case V4L2_MPEG_VIDEO_H264_LEVEL_5_1:
default:
return 51;
}
}
static u8 hevc_profile_to_mcu_profile(enum v4l2_mpeg_video_hevc_profile profile)
{
switch (profile) {
default:
case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN:
return 1;
case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10:
return 2;
case V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_STILL_PICTURE:
return 3;
}
}
static u16 hevc_level_to_mcu_level(enum v4l2_mpeg_video_hevc_level level)
{
switch (level) {
case V4L2_MPEG_VIDEO_HEVC_LEVEL_1:
return 10;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_2:
return 20;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_2_1:
return 21;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_3:
return 30;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_3_1:
return 31;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_4:
return 40;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_4_1:
return 41;
case V4L2_MPEG_VIDEO_HEVC_LEVEL_5:
return 50;
default:
case V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1:
return 51;
}
}
static u8 hevc_tier_to_mcu_tier(enum v4l2_mpeg_video_hevc_tier tier)
{
switch (tier) {
default:
case V4L2_MPEG_VIDEO_HEVC_TIER_MAIN:
return 0;
case V4L2_MPEG_VIDEO_HEVC_TIER_HIGH:
return 1;
}
}
static u32
v4l2_bitrate_mode_to_mcu_mode(enum v4l2_mpeg_video_bitrate_mode mode)
{
switch (mode) {
case V4L2_MPEG_VIDEO_BITRATE_MODE_VBR:
return 2;
case V4L2_MPEG_VIDEO_BITRATE_MODE_CBR:
default:
return 1;
}
}
static u32 v4l2_cpb_size_to_mcu(unsigned int cpb_size, unsigned int bitrate)
{
unsigned int cpb_size_kbit;
unsigned int bitrate_kbps;
/*
* The mcu expects the CPB size in units of a 90 kHz clock, but the
* channel follows the V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE and stores
* the CPB size in kilobytes.
*/
cpb_size_kbit = cpb_size * BITS_PER_BYTE;
bitrate_kbps = bitrate / 1000;
return (cpb_size_kbit * 90000) / bitrate_kbps;
}
static s16 get_qp_delta(int minuend, int subtrahend)
{
if (minuend == subtrahend)
return -1;
else
return minuend - subtrahend;
}
static u32 allegro_channel_get_entropy_mode(struct allegro_channel *channel)
{
#define ALLEGRO_ENTROPY_MODE_CAVLC 0
#define ALLEGRO_ENTROPY_MODE_CABAC 1
/* HEVC always uses CABAC, but this has to be explicitly set */
if (channel->codec == V4L2_PIX_FMT_HEVC)
return ALLEGRO_ENTROPY_MODE_CABAC;
return ALLEGRO_ENTROPY_MODE_CAVLC;
}
static int fill_create_channel_param(struct allegro_channel *channel,
struct create_channel_param *param)
{
int i_frame_qp = allegro_channel_get_i_frame_qp(channel);
int p_frame_qp = allegro_channel_get_p_frame_qp(channel);
int b_frame_qp = allegro_channel_get_b_frame_qp(channel);
int bitrate_mode = v4l2_ctrl_g_ctrl(channel->mpeg_video_bitrate_mode);
unsigned int cpb_size = v4l2_ctrl_g_ctrl(channel->mpeg_video_cpb_size);
param->width = channel->width;
param->height = channel->height;
param->format = v4l2_pixelformat_to_mcu_format(channel->pixelformat);
param->colorspace =
v4l2_colorspace_to_mcu_colorspace(channel->colorspace);
param->src_mode = 0x0;
param->codec = channel->codec;
if (channel->codec == V4L2_PIX_FMT_H264) {
enum v4l2_mpeg_video_h264_profile profile;
enum v4l2_mpeg_video_h264_level level;
profile = v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_profile);
level = v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_level);
param->profile = v4l2_profile_to_mcu_profile(profile);
param->constraint_set_flags = BIT(1);
param->level = v4l2_level_to_mcu_level(level);
} else {
enum v4l2_mpeg_video_hevc_profile profile;
enum v4l2_mpeg_video_hevc_level level;
enum v4l2_mpeg_video_hevc_tier tier;
profile = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_profile);
level = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_level);
tier = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_tier);
param->profile = hevc_profile_to_mcu_profile(profile);
param->level = hevc_level_to_mcu_level(level);
param->tier = hevc_tier_to_mcu_tier(tier);
}
param->log2_max_poc = LOG2_MAX_PIC_ORDER_CNT;
param->log2_max_frame_num = channel->log2_max_frame_num;
param->temporal_mvp_enable = channel->temporal_mvp_enable;
param->dbf_ovr_en = channel->dbf_ovr_en;
param->override_lf = channel->enable_deblocking_filter_override;
param->enable_reordering = channel->enable_reordering;
param->entropy_mode = allegro_channel_get_entropy_mode(channel);
param->rdo_cost_mode = 1;
param->custom_lda = 1;
param->lf = 1;
param->lf_x_tile = channel->enable_loop_filter_across_tiles;
param->lf_x_slice = channel->enable_loop_filter_across_slices;
param->src_bit_depth = 8;
param->beta_offset = BETA_OFFSET_DIV_2;
param->tc_offset = TC_OFFSET_DIV_2;
param->num_slices = 1;
param->me_range[0] = channel->b_hrz_me_range;
param->me_range[1] = channel->b_vrt_me_range;
param->me_range[2] = channel->p_hrz_me_range;
param->me_range[3] = channel->p_vrt_me_range;
param->max_cu_size = channel->max_cu_size;
param->min_cu_size = channel->min_cu_size;
param->max_tu_size = channel->max_tu_size;
param->min_tu_size = channel->min_tu_size;
param->max_transfo_depth_intra = channel->max_transfo_depth_intra;
param->max_transfo_depth_inter = channel->max_transfo_depth_inter;
param->prefetch_auto = 0;
param->prefetch_mem_offset = 0;
param->prefetch_mem_size = 0;
param->rate_control_mode = channel->frame_rc_enable ?
v4l2_bitrate_mode_to_mcu_mode(bitrate_mode) : 0;
param->cpb_size = v4l2_cpb_size_to_mcu(cpb_size, channel->bitrate_peak);
/* Shall be ]0;cpb_size in 90 kHz units]. Use maximum value. */
param->initial_rem_delay = param->cpb_size;
param->framerate = DIV_ROUND_UP(channel->framerate.numerator,
channel->framerate.denominator);
param->clk_ratio = channel->framerate.denominator == 1001 ? 1001 : 1000;
param->target_bitrate = channel->bitrate;
param->max_bitrate = channel->bitrate_peak;
param->initial_qp = i_frame_qp;
param->min_qp = allegro_channel_get_min_qp(channel);
param->max_qp = allegro_channel_get_max_qp(channel);
param->ip_delta = get_qp_delta(i_frame_qp, p_frame_qp);
param->pb_delta = get_qp_delta(p_frame_qp, b_frame_qp);
param->golden_ref = 0;
param->golden_delta = 2;
param->golden_ref_frequency = 10;
param->rate_control_option = 0x00000000;
param->num_pixel = channel->width + channel->height;
param->max_psnr = 4200;
param->max_pixel_value = 255;
param->gop_ctrl_mode = 0x00000002;
param->freq_idr = v4l2_ctrl_g_ctrl(channel->mpeg_video_gop_size);
param->freq_lt = 0;
param->gdr_mode = 0x00000000;
param->gop_length = v4l2_ctrl_g_ctrl(channel->mpeg_video_gop_size);
param->subframe_latency = 0x00000000;
param->lda_factors[0] = 51;
param->lda_factors[1] = 90;
param->lda_factors[2] = 151;
param->lda_factors[3] = 151;
param->lda_factors[4] = 151;
param->lda_factors[5] = 151;
param->max_num_merge_cand = 5;
return 0;
}
static int allegro_mcu_send_create_channel(struct allegro_dev *dev,
struct allegro_channel *channel)
{
struct mcu_msg_create_channel msg;
struct allegro_buffer *blob = &channel->config_blob;
struct create_channel_param param;
size_t size;
memset(&param, 0, sizeof(param));
fill_create_channel_param(channel, &param);
allegro_alloc_buffer(dev, blob, sizeof(struct create_channel_param));
param.version = dev->fw_info->mailbox_version;
size = allegro_encode_config_blob(blob->vaddr, &param);
memset(&msg, 0, sizeof(msg));
msg.header.type = MCU_MSG_TYPE_CREATE_CHANNEL;
msg.header.version = dev->fw_info->mailbox_version;
msg.user_id = channel->user_id;
msg.blob = blob->vaddr;
msg.blob_size = size;
msg.blob_mcu_addr = to_mcu_addr(dev, blob->paddr);
allegro_mbox_send(dev->mbox_command, &msg);
return 0;
}
static int allegro_mcu_send_destroy_channel(struct allegro_dev *dev,
struct allegro_channel *channel)
{
struct mcu_msg_destroy_channel msg;
memset(&msg, 0, sizeof(msg));
msg.header.type = MCU_MSG_TYPE_DESTROY_CHANNEL;
msg.header.version = dev->fw_info->mailbox_version;
msg.channel_id = channel->mcu_channel_id;
allegro_mbox_send(dev->mbox_command, &msg);
return 0;
}
static int allegro_mcu_send_put_stream_buffer(struct allegro_dev *dev,
struct allegro_channel *channel,
dma_addr_t paddr,
unsigned long size,
u64 dst_handle)
{
struct mcu_msg_put_stream_buffer msg;
memset(&msg, 0, sizeof(msg));
msg.header.type = MCU_MSG_TYPE_PUT_STREAM_BUFFER;
msg.header.version = dev->fw_info->mailbox_version;
msg.channel_id = channel->mcu_channel_id;
msg.dma_addr = to_codec_addr(dev, paddr);
msg.mcu_addr = to_mcu_addr(dev, paddr);
msg.size = size;
msg.offset = ENCODER_STREAM_OFFSET;
/* copied to mcu_msg_encode_frame_response */
msg.dst_handle = dst_handle;
allegro_mbox_send(dev->mbox_command, &msg);
return 0;
}
static int allegro_mcu_send_encode_frame(struct allegro_dev *dev,
struct allegro_channel *channel,
dma_addr_t src_y, dma_addr_t src_uv,
u64 src_handle)
{
struct mcu_msg_encode_frame msg;
memset(&msg, 0, sizeof(msg));
msg.header.type = MCU_MSG_TYPE_ENCODE_FRAME;
msg.header.version = dev->fw_info->mailbox_version;
msg.channel_id = channel->mcu_channel_id;
msg.encoding_options = AL_OPT_FORCE_LOAD;
msg.pps_qp = 26; /* qp are relative to 26 */
msg.user_param = 0; /* copied to mcu_msg_encode_frame_response */
/* src_handle is copied to mcu_msg_encode_frame_response */
msg.src_handle = src_handle;
msg.src_y = to_codec_addr(dev, src_y);
msg.src_uv = to_codec_addr(dev, src_uv);
msg.stride = channel->stride;
msg.ep2 = 0x0;
msg.ep2_v = to_mcu_addr(dev, msg.ep2);
allegro_mbox_send(dev->mbox_command, &msg);
return 0;
}
static int allegro_mcu_wait_for_init_timeout(struct allegro_dev *dev,
unsigned long timeout_ms)
{
unsigned long tmo;
tmo = wait_for_completion_timeout(&dev->init_complete,
msecs_to_jiffies(timeout_ms));
if (tmo == 0)
return -ETIMEDOUT;
reinit_completion(&dev->init_complete);
return 0;
}
static int allegro_mcu_push_buffer_internal(struct allegro_channel *channel,
enum mcu_msg_type type)
{
struct allegro_dev *dev = channel->dev;
struct mcu_msg_push_buffers_internal *msg;
struct mcu_msg_push_buffers_internal_buffer *buffer;
unsigned int num_buffers = 0;
size_t size;
struct allegro_buffer *al_buffer;
struct list_head *list;
int err;
switch (type) {
case MCU_MSG_TYPE_PUSH_BUFFER_REFERENCE:
list = &channel->buffers_reference;
break;
case MCU_MSG_TYPE_PUSH_BUFFER_INTERMEDIATE:
list = &channel->buffers_intermediate;
break;
default:
return -EINVAL;
}
list_for_each_entry(al_buffer, list, head)
num_buffers++;
size = struct_size(msg, buffer, num_buffers);
msg = kmalloc(size, GFP_KERNEL);
if (!msg)
return -ENOMEM;
msg->header.type = type;
msg->header.version = dev->fw_info->mailbox_version;
msg->channel_id = channel->mcu_channel_id;
msg->num_buffers = num_buffers;
buffer = msg->buffer;
list_for_each_entry(al_buffer, list, head) {
buffer->dma_addr = to_codec_addr(dev, al_buffer->paddr);
buffer->mcu_addr = to_mcu_addr(dev, al_buffer->paddr);
buffer->size = to_mcu_size(dev, al_buffer->size);
buffer++;
}
err = allegro_mbox_send(dev->mbox_command, msg);
kfree(msg);
return err;
}
static int allegro_mcu_push_buffer_intermediate(struct allegro_channel *channel)
{
enum mcu_msg_type type = MCU_MSG_TYPE_PUSH_BUFFER_INTERMEDIATE;
return allegro_mcu_push_buffer_internal(channel, type);
}
static int allegro_mcu_push_buffer_reference(struct allegro_channel *channel)
{
enum mcu_msg_type type = MCU_MSG_TYPE_PUSH_BUFFER_REFERENCE;
return allegro_mcu_push_buffer_internal(channel, type);
}
static int allocate_buffers_internal(struct allegro_channel *channel,
struct list_head *list,
size_t n, size_t size)
{
struct allegro_dev *dev = channel->dev;
unsigned int i;
int err;
struct allegro_buffer *buffer, *tmp;
for (i = 0; i < n; i++) {
buffer = kmalloc(sizeof(*buffer), GFP_KERNEL);
if (!buffer) {
err = -ENOMEM;
goto err;
}
INIT_LIST_HEAD(&buffer->head);
err = allegro_alloc_buffer(dev, buffer, size);
if (err)
goto err;
list_add(&buffer->head, list);
}
return 0;
err:
list_for_each_entry_safe(buffer, tmp, list, head) {
list_del(&buffer->head);
allegro_free_buffer(dev, buffer);
kfree(buffer);
}
return err;
}
static void destroy_buffers_internal(struct allegro_channel *channel,
struct list_head *list)
{
struct allegro_dev *dev = channel->dev;
struct allegro_buffer *buffer, *tmp;
list_for_each_entry_safe(buffer, tmp, list, head) {
list_del(&buffer->head);
allegro_free_buffer(dev, buffer);
kfree(buffer);
}
}
static void destroy_reference_buffers(struct allegro_channel *channel)
{
return destroy_buffers_internal(channel, &channel->buffers_reference);
}
static void destroy_intermediate_buffers(struct allegro_channel *channel)
{
return destroy_buffers_internal(channel,
&channel->buffers_intermediate);
}
static int allocate_intermediate_buffers(struct allegro_channel *channel,
size_t n, size_t size)
{
return allocate_buffers_internal(channel,
&channel->buffers_intermediate,
n, size);
}
static int allocate_reference_buffers(struct allegro_channel *channel,
size_t n, size_t size)
{
return allocate_buffers_internal(channel,
&channel->buffers_reference,
n, PAGE_ALIGN(size));
}
static ssize_t allegro_h264_write_sps(struct allegro_channel *channel,
void *dest, size_t n)
{
struct allegro_dev *dev = channel->dev;
struct nal_h264_sps *sps;
ssize_t size;
unsigned int size_mb = SIZE_MACROBLOCK;
/* Calculation of crop units in Rec. ITU-T H.264 (04/2017) p. 76 */
unsigned int crop_unit_x = 2;
unsigned int crop_unit_y = 2;
enum v4l2_mpeg_video_h264_profile profile;
enum v4l2_mpeg_video_h264_level level;
unsigned int cpb_size;
unsigned int cpb_size_scale;
sps = kzalloc(sizeof(*sps), GFP_KERNEL);
if (!sps)
return -ENOMEM;
profile = v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_profile);
level = v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_level);
sps->profile_idc = nal_h264_profile_from_v4l2(profile);
sps->constraint_set0_flag = 0;
sps->constraint_set1_flag = 1;
sps->constraint_set2_flag = 0;
sps->constraint_set3_flag = 0;
sps->constraint_set4_flag = 0;
sps->constraint_set5_flag = 0;
sps->level_idc = nal_h264_level_from_v4l2(level);
sps->seq_parameter_set_id = 0;
sps->log2_max_frame_num_minus4 = LOG2_MAX_FRAME_NUM - 4;
sps->pic_order_cnt_type = 0;
sps->log2_max_pic_order_cnt_lsb_minus4 = LOG2_MAX_PIC_ORDER_CNT - 4;
sps->max_num_ref_frames = 3;
sps->gaps_in_frame_num_value_allowed_flag = 0;
sps->pic_width_in_mbs_minus1 =
DIV_ROUND_UP(channel->width, size_mb) - 1;
sps->pic_height_in_map_units_minus1 =
DIV_ROUND_UP(channel->height, size_mb) - 1;
sps->frame_mbs_only_flag = 1;
sps->mb_adaptive_frame_field_flag = 0;
sps->direct_8x8_inference_flag = 1;
sps->frame_cropping_flag =
(channel->width % size_mb) || (channel->height % size_mb);
if (sps->frame_cropping_flag) {
sps->crop_left = 0;
sps->crop_right = (round_up(channel->width, size_mb) - channel->width) / crop_unit_x;
sps->crop_top = 0;
sps->crop_bottom = (round_up(channel->height, size_mb) - channel->height) / crop_unit_y;
}
sps->vui_parameters_present_flag = 1;
sps->vui.aspect_ratio_info_present_flag = 0;
sps->vui.overscan_info_present_flag = 0;
sps->vui.video_signal_type_present_flag = 1;
sps->vui.video_format = 1;
sps->vui.video_full_range_flag = 0;
sps->vui.colour_description_present_flag = 1;
sps->vui.colour_primaries = 5;
sps->vui.transfer_characteristics = 5;
sps->vui.matrix_coefficients = 5;
sps->vui.chroma_loc_info_present_flag = 1;
sps->vui.chroma_sample_loc_type_top_field = 0;
sps->vui.chroma_sample_loc_type_bottom_field = 0;
sps->vui.timing_info_present_flag = 1;
sps->vui.num_units_in_tick = channel->framerate.denominator;
sps->vui.time_scale = 2 * channel->framerate.numerator;
sps->vui.fixed_frame_rate_flag = 1;
sps->vui.nal_hrd_parameters_present_flag = 0;
sps->vui.vcl_hrd_parameters_present_flag = 1;
sps->vui.vcl_hrd_parameters.cpb_cnt_minus1 = 0;
sps->vui.vcl_hrd_parameters.bit_rate_scale = 0;
/* See Rec. ITU-T H.264 (04/2017) p. 410 E-53 */
sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] =
channel->bitrate_peak / (1 << (6 + sps->vui.vcl_hrd_parameters.bit_rate_scale)) - 1;
/* See Rec. ITU-T H.264 (04/2017) p. 410 E-54 */
cpb_size = v4l2_ctrl_g_ctrl(channel->mpeg_video_cpb_size);
cpb_size_scale = ffs(cpb_size) - 4;
sps->vui.vcl_hrd_parameters.cpb_size_scale = cpb_size_scale;
sps->vui.vcl_hrd_parameters.cpb_size_value_minus1[0] =
(cpb_size * 1000) / (1 << (4 + cpb_size_scale)) - 1;
sps->vui.vcl_hrd_parameters.cbr_flag[0] =
!v4l2_ctrl_g_ctrl(channel->mpeg_video_frame_rc_enable);
sps->vui.vcl_hrd_parameters.initial_cpb_removal_delay_length_minus1 = 31;
sps->vui.vcl_hrd_parameters.cpb_removal_delay_length_minus1 = 31;
sps->vui.vcl_hrd_parameters.dpb_output_delay_length_minus1 = 31;
sps->vui.vcl_hrd_parameters.time_offset_length = 0;
sps->vui.low_delay_hrd_flag = 0;
sps->vui.pic_struct_present_flag = 1;
sps->vui.bitstream_restriction_flag = 0;
size = nal_h264_write_sps(&dev->plat_dev->dev, dest, n, sps);
kfree(sps);
return size;
}
static ssize_t allegro_h264_write_pps(struct allegro_channel *channel,
void *dest, size_t n)
{
struct allegro_dev *dev = channel->dev;
struct nal_h264_pps *pps;
ssize_t size;
pps = kzalloc(sizeof(*pps), GFP_KERNEL);
if (!pps)
return -ENOMEM;
pps->pic_parameter_set_id = 0;
pps->seq_parameter_set_id = 0;
pps->entropy_coding_mode_flag = 0;
pps->bottom_field_pic_order_in_frame_present_flag = 0;
pps->num_slice_groups_minus1 = 0;
pps->num_ref_idx_l0_default_active_minus1 = channel->num_ref_idx_l0 - 1;
pps->num_ref_idx_l1_default_active_minus1 = channel->num_ref_idx_l1 - 1;
pps->weighted_pred_flag = 0;
pps->weighted_bipred_idc = 0;
pps->pic_init_qp_minus26 = 0;
pps->pic_init_qs_minus26 = 0;
pps->chroma_qp_index_offset = 0;
pps->deblocking_filter_control_present_flag = 1;
pps->constrained_intra_pred_flag = 0;
pps->redundant_pic_cnt_present_flag = 0;
pps->transform_8x8_mode_flag = 0;
pps->pic_scaling_matrix_present_flag = 0;
pps->second_chroma_qp_index_offset = 0;
size = nal_h264_write_pps(&dev->plat_dev->dev, dest, n, pps);
kfree(pps);
return size;
}
static void allegro_channel_eos_event(struct allegro_channel *channel)
{
const struct v4l2_event eos_event = {
.type = V4L2_EVENT_EOS
};
v4l2_event_queue_fh(&channel->fh, &eos_event);
}
static ssize_t allegro_hevc_write_vps(struct allegro_channel *channel,
void *dest, size_t n)
{
struct allegro_dev *dev = channel->dev;
struct nal_hevc_vps *vps;
struct nal_hevc_profile_tier_level *ptl;
ssize_t size;
unsigned int num_ref_frames = channel->num_ref_idx_l0;
s32 profile = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_profile);
s32 level = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_level);
s32 tier = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_tier);
vps = kzalloc(sizeof(*vps), GFP_KERNEL);
if (!vps)
return -ENOMEM;
vps->base_layer_internal_flag = 1;
vps->base_layer_available_flag = 1;
vps->temporal_id_nesting_flag = 1;
ptl = &vps->profile_tier_level;
ptl->general_profile_idc = nal_hevc_profile_from_v4l2(profile);
ptl->general_profile_compatibility_flag[ptl->general_profile_idc] = 1;
ptl->general_tier_flag = nal_hevc_tier_from_v4l2(tier);
ptl->general_progressive_source_flag = 1;
ptl->general_frame_only_constraint_flag = 1;
ptl->general_level_idc = nal_hevc_level_from_v4l2(level);
vps->sub_layer_ordering_info_present_flag = 0;
vps->max_dec_pic_buffering_minus1[0] = num_ref_frames;
vps->max_num_reorder_pics[0] = num_ref_frames;
size = nal_hevc_write_vps(&dev->plat_dev->dev, dest, n, vps);
kfree(vps);
return size;
}
static ssize_t allegro_hevc_write_sps(struct allegro_channel *channel,
void *dest, size_t n)
{
struct allegro_dev *dev = channel->dev;
struct nal_hevc_sps *sps;
struct nal_hevc_profile_tier_level *ptl;
ssize_t size;
unsigned int num_ref_frames = channel->num_ref_idx_l0;
s32 profile = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_profile);
s32 level = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_level);
s32 tier = v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_tier);
sps = kzalloc(sizeof(*sps), GFP_KERNEL);
if (!sps)
return -ENOMEM;
sps->temporal_id_nesting_flag = 1;
ptl = &sps->profile_tier_level;
ptl->general_profile_idc = nal_hevc_profile_from_v4l2(profile);
ptl->general_profile_compatibility_flag[ptl->general_profile_idc] = 1;
ptl->general_tier_flag = nal_hevc_tier_from_v4l2(tier);
ptl->general_progressive_source_flag = 1;
ptl->general_frame_only_constraint_flag = 1;
ptl->general_level_idc = nal_hevc_level_from_v4l2(level);
sps->seq_parameter_set_id = 0;
sps->chroma_format_idc = 1; /* Only 4:2:0 sampling supported */
sps->pic_width_in_luma_samples = round_up(channel->width, 8);
sps->pic_height_in_luma_samples = round_up(channel->height, 8);
sps->conf_win_right_offset =
sps->pic_width_in_luma_samples - channel->width;
sps->conf_win_bottom_offset =
sps->pic_height_in_luma_samples - channel->height;
sps->conformance_window_flag =
sps->conf_win_right_offset || sps->conf_win_bottom_offset;
sps->log2_max_pic_order_cnt_lsb_minus4 = LOG2_MAX_PIC_ORDER_CNT - 4;
sps->sub_layer_ordering_info_present_flag = 1;
sps->max_dec_pic_buffering_minus1[0] = num_ref_frames;
sps->max_num_reorder_pics[0] = num_ref_frames;
sps->log2_min_luma_coding_block_size_minus3 =
channel->min_cu_size - 3;
sps->log2_diff_max_min_luma_coding_block_size =
channel->max_cu_size - channel->min_cu_size;
sps->log2_min_luma_transform_block_size_minus2 =
channel->min_tu_size - 2;
sps->log2_diff_max_min_luma_transform_block_size =
channel->max_tu_size - channel->min_tu_size;
sps->max_transform_hierarchy_depth_intra =
channel->max_transfo_depth_intra;
sps->max_transform_hierarchy_depth_inter =
channel->max_transfo_depth_inter;
sps->sps_temporal_mvp_enabled_flag = channel->temporal_mvp_enable;
sps->strong_intra_smoothing_enabled_flag = channel->max_cu_size > 4;
size = nal_hevc_write_sps(&dev->plat_dev->dev, dest, n, sps);
kfree(sps);
return size;
}
static ssize_t allegro_hevc_write_pps(struct allegro_channel *channel,
struct mcu_msg_encode_frame_response *msg,
void *dest, size_t n)
{
struct allegro_dev *dev = channel->dev;
struct nal_hevc_pps *pps;
ssize_t size;
int i;
pps = kzalloc(sizeof(*pps), GFP_KERNEL);
if (!pps)
return -ENOMEM;
pps->pps_pic_parameter_set_id = 0;
pps->pps_seq_parameter_set_id = 0;
if (msg->num_column > 1 || msg->num_row > 1) {
pps->tiles_enabled_flag = 1;
pps->num_tile_columns_minus1 = msg->num_column - 1;
pps->num_tile_rows_minus1 = msg->num_row - 1;
for (i = 0; i < msg->num_column; i++)
pps->column_width_minus1[i] = msg->tile_width[i] - 1;
for (i = 0; i < msg->num_row; i++)
pps->row_height_minus1[i] = msg->tile_height[i] - 1;
}
pps->loop_filter_across_tiles_enabled_flag =
channel->enable_loop_filter_across_tiles;
pps->pps_loop_filter_across_slices_enabled_flag =
channel->enable_loop_filter_across_slices;
pps->deblocking_filter_control_present_flag = 1;
pps->deblocking_filter_override_enabled_flag =
channel->enable_deblocking_filter_override;
pps->pps_beta_offset_div2 = BETA_OFFSET_DIV_2;
pps->pps_tc_offset_div2 = TC_OFFSET_DIV_2;
pps->lists_modification_present_flag = channel->enable_reordering;
size = nal_hevc_write_pps(&dev->plat_dev->dev, dest, n, pps);
kfree(pps);
return size;
}
static u64 allegro_put_buffer(struct allegro_channel *channel,
struct list_head *list,
struct vb2_v4l2_buffer *buffer)
{
struct v4l2_m2m_buffer *b = container_of(buffer,
struct v4l2_m2m_buffer, vb);
struct allegro_m2m_buffer *shadow = to_allegro_m2m_buffer(b);
mutex_lock(&channel->shadow_list_lock);
list_add_tail(&shadow->head, list);
mutex_unlock(&channel->shadow_list_lock);
return ptr_to_u64(buffer);
}
static struct vb2_v4l2_buffer *
allegro_get_buffer(struct allegro_channel *channel,
struct list_head *list, u64 handle)
{
struct allegro_m2m_buffer *shadow, *tmp;
struct vb2_v4l2_buffer *buffer = NULL;
mutex_lock(&channel->shadow_list_lock);
list_for_each_entry_safe(shadow, tmp, list, head) {
if (handle == ptr_to_u64(&shadow->buf.vb)) {
buffer = &shadow->buf.vb;
list_del_init(&shadow->head);
break;
}
}
mutex_unlock(&channel->shadow_list_lock);
return buffer;
}
static void allegro_channel_finish_frame(struct allegro_channel *channel,
struct mcu_msg_encode_frame_response *msg)
{
struct allegro_dev *dev = channel->dev;
struct vb2_v4l2_buffer *src_buf;
struct vb2_v4l2_buffer *dst_buf;
struct {
u32 offset;
u32 size;
} *partition;
enum vb2_buffer_state state = VB2_BUF_STATE_ERROR;
char *curr;
ssize_t len;
ssize_t free;
src_buf = allegro_get_buffer(channel, &channel->source_shadow_list,
msg->src_handle);
if (!src_buf)
v4l2_warn(&dev->v4l2_dev,
"channel %d: invalid source buffer\n",
channel->mcu_channel_id);
dst_buf = allegro_get_buffer(channel, &channel->stream_shadow_list,
msg->dst_handle);
if (!dst_buf)
v4l2_warn(&dev->v4l2_dev,
"channel %d: invalid stream buffer\n",
channel->mcu_channel_id);
if (!src_buf || !dst_buf)
goto err;
if (v4l2_m2m_is_last_draining_src_buf(channel->fh.m2m_ctx, src_buf)) {
dst_buf->flags |= V4L2_BUF_FLAG_LAST;
allegro_channel_eos_event(channel);
v4l2_m2m_mark_stopped(channel->fh.m2m_ctx);
}
dst_buf->sequence = channel->csequence++;
if (msg->error_code & AL_ERROR) {
v4l2_err(&dev->v4l2_dev,
"channel %d: failed to encode frame: %s (%x)\n",
channel->mcu_channel_id,
allegro_err_to_string(msg->error_code),
msg->error_code);
goto err;
}
if (msg->partition_table_size != 1) {
v4l2_warn(&dev->v4l2_dev,
"channel %d: only handling first partition table entry (%d entries)\n",
channel->mcu_channel_id, msg->partition_table_size);
}
if (msg->partition_table_offset +
msg->partition_table_size * sizeof(*partition) >
vb2_plane_size(&dst_buf->vb2_buf, 0)) {
v4l2_err(&dev->v4l2_dev,
"channel %d: partition table outside of dst_buf\n",
channel->mcu_channel_id);
goto err;
}
partition =
vb2_plane_vaddr(&dst_buf->vb2_buf, 0) + msg->partition_table_offset;
if (partition->offset + partition->size >
vb2_plane_size(&dst_buf->vb2_buf, 0)) {
v4l2_err(&dev->v4l2_dev,
"channel %d: encoded frame is outside of dst_buf (offset 0x%x, size 0x%x)\n",
channel->mcu_channel_id, partition->offset,
partition->size);
goto err;
}
v4l2_dbg(2, debug, &dev->v4l2_dev,
"channel %d: encoded frame of size %d is at offset 0x%x\n",
channel->mcu_channel_id, partition->size, partition->offset);
/*
* The payload must include the data before the partition offset,
* because we will put the sps and pps data there.
*/
vb2_set_plane_payload(&dst_buf->vb2_buf, 0,
partition->offset + partition->size);
curr = vb2_plane_vaddr(&dst_buf->vb2_buf, 0);
free = partition->offset;
if (channel->codec == V4L2_PIX_FMT_HEVC && msg->is_idr) {
len = allegro_hevc_write_vps(channel, curr, free);
if (len < 0) {
v4l2_err(&dev->v4l2_dev,
"not enough space for video parameter set: %zd left\n",
free);
goto err;
}
curr += len;
free -= len;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"channel %d: wrote %zd byte VPS nal unit\n",
channel->mcu_channel_id, len);
}
if (msg->is_idr) {
if (channel->codec == V4L2_PIX_FMT_H264)
len = allegro_h264_write_sps(channel, curr, free);
else
len = allegro_hevc_write_sps(channel, curr, free);
if (len < 0) {
v4l2_err(&dev->v4l2_dev,
"not enough space for sequence parameter set: %zd left\n",
free);
goto err;
}
curr += len;
free -= len;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"channel %d: wrote %zd byte SPS nal unit\n",
channel->mcu_channel_id, len);
}
if (msg->slice_type == AL_ENC_SLICE_TYPE_I) {
if (channel->codec == V4L2_PIX_FMT_H264)
len = allegro_h264_write_pps(channel, curr, free);
else
len = allegro_hevc_write_pps(channel, msg, curr, free);
if (len < 0) {
v4l2_err(&dev->v4l2_dev,
"not enough space for picture parameter set: %zd left\n",
free);
goto err;
}
curr += len;
free -= len;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"channel %d: wrote %zd byte PPS nal unit\n",
channel->mcu_channel_id, len);
}
if (msg->slice_type != AL_ENC_SLICE_TYPE_I && !msg->is_idr) {
dst_buf->vb2_buf.planes[0].data_offset = free;
free = 0;
} else {
if (channel->codec == V4L2_PIX_FMT_H264)
len = nal_h264_write_filler(&dev->plat_dev->dev, curr, free);
else
len = nal_hevc_write_filler(&dev->plat_dev->dev, curr, free);
if (len < 0) {
v4l2_err(&dev->v4l2_dev,
"failed to write %zd filler data\n", free);
goto err;
}
curr += len;
free -= len;
v4l2_dbg(2, debug, &dev->v4l2_dev,
"channel %d: wrote %zd bytes filler nal unit\n",
channel->mcu_channel_id, len);
}
if (free != 0) {
v4l2_err(&dev->v4l2_dev,
"non-VCL NAL units do not fill space until VCL NAL unit: %zd bytes left\n",
free);
goto err;
}
state = VB2_BUF_STATE_DONE;
v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
if (msg->is_idr)
dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
else
dst_buf->flags |= V4L2_BUF_FLAG_PFRAME;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"channel %d: encoded frame #%03d (%s%s, QP %d, %d bytes)\n",
channel->mcu_channel_id,
dst_buf->sequence,
msg->is_idr ? "IDR, " : "",
msg->slice_type == AL_ENC_SLICE_TYPE_I ? "I slice" :
msg->slice_type == AL_ENC_SLICE_TYPE_P ? "P slice" : "unknown",
msg->qp, partition->size);
err:
if (src_buf)
v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
if (dst_buf)
v4l2_m2m_buf_done(dst_buf, state);
}
static int allegro_handle_init(struct allegro_dev *dev,
struct mcu_msg_init_response *msg)
{
complete(&dev->init_complete);
return 0;
}
static int
allegro_handle_create_channel(struct allegro_dev *dev,
struct mcu_msg_create_channel_response *msg)
{
struct allegro_channel *channel;
int err = 0;
struct create_channel_param param;
channel = allegro_find_channel_by_user_id(dev, msg->user_id);
if (IS_ERR(channel)) {
v4l2_warn(&dev->v4l2_dev,
"received %s for unknown user %d\n",
msg_type_name(msg->header.type),
msg->user_id);
return -EINVAL;
}
if (msg->error_code) {
v4l2_err(&dev->v4l2_dev,
"user %d: mcu failed to create channel: %s (%x)\n",
channel->user_id,
allegro_err_to_string(msg->error_code),
msg->error_code);
err = -EIO;
goto out;
}
channel->mcu_channel_id = msg->channel_id;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"user %d: channel has channel id %d\n",
channel->user_id, channel->mcu_channel_id);
err = allegro_decode_config_blob(&param, msg, channel->config_blob.vaddr);
allegro_free_buffer(channel->dev, &channel->config_blob);
if (err)
goto out;
channel->num_ref_idx_l0 = param.num_ref_idx_l0;
channel->num_ref_idx_l1 = param.num_ref_idx_l1;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"channel %d: intermediate buffers: %d x %d bytes\n",
channel->mcu_channel_id,
msg->int_buffers_count, msg->int_buffers_size);
err = allocate_intermediate_buffers(channel, msg->int_buffers_count,
msg->int_buffers_size);
if (err) {
v4l2_err(&dev->v4l2_dev,
"channel %d: failed to allocate intermediate buffers\n",
channel->mcu_channel_id);
goto out;
}
err = allegro_mcu_push_buffer_intermediate(channel);
if (err)
goto out;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"channel %d: reference buffers: %d x %d bytes\n",
channel->mcu_channel_id,
msg->rec_buffers_count, msg->rec_buffers_size);
err = allocate_reference_buffers(channel, msg->rec_buffers_count,
msg->rec_buffers_size);
if (err) {
v4l2_err(&dev->v4l2_dev,
"channel %d: failed to allocate reference buffers\n",
channel->mcu_channel_id);
goto out;
}
err = allegro_mcu_push_buffer_reference(channel);
if (err)
goto out;
out:
channel->error = err;
complete(&channel->completion);
/* Handled successfully, error is passed via channel->error */
return 0;
}
static int
allegro_handle_destroy_channel(struct allegro_dev *dev,
struct mcu_msg_destroy_channel_response *msg)
{
struct allegro_channel *channel;
channel = allegro_find_channel_by_channel_id(dev, msg->channel_id);
if (IS_ERR(channel)) {
v4l2_err(&dev->v4l2_dev,
"received %s for unknown channel %d\n",
msg_type_name(msg->header.type),
msg->channel_id);
return -EINVAL;
}
v4l2_dbg(2, debug, &dev->v4l2_dev,
"user %d: vcu destroyed channel %d\n",
channel->user_id, channel->mcu_channel_id);
complete(&channel->completion);
return 0;
}
static int
allegro_handle_encode_frame(struct allegro_dev *dev,
struct mcu_msg_encode_frame_response *msg)
{
struct allegro_channel *channel;
channel = allegro_find_channel_by_channel_id(dev, msg->channel_id);
if (IS_ERR(channel)) {
v4l2_err(&dev->v4l2_dev,
"received %s for unknown channel %d\n",
msg_type_name(msg->header.type),
msg->channel_id);
return -EINVAL;
}
allegro_channel_finish_frame(channel, msg);
return 0;
}
static void allegro_handle_message(struct allegro_dev *dev,
union mcu_msg_response *msg)
{
switch (msg->header.type) {
case MCU_MSG_TYPE_INIT:
allegro_handle_init(dev, &msg->init);
break;
case MCU_MSG_TYPE_CREATE_CHANNEL:
allegro_handle_create_channel(dev, &msg->create_channel);
break;
case MCU_MSG_TYPE_DESTROY_CHANNEL:
allegro_handle_destroy_channel(dev, &msg->destroy_channel);
break;
case MCU_MSG_TYPE_ENCODE_FRAME:
allegro_handle_encode_frame(dev, &msg->encode_frame);
break;
default:
v4l2_warn(&dev->v4l2_dev,
"%s: unknown message %s\n",
__func__, msg_type_name(msg->header.type));
break;
}
}
static irqreturn_t allegro_hardirq(int irq, void *data)
{
struct allegro_dev *dev = data;
unsigned int status;
regmap_read(dev->regmap, AL5_ITC_CPU_IRQ_STA, &status);
if (!(status & AL5_ITC_CPU_IRQ_STA_TRIGGERED))
return IRQ_NONE;
regmap_write(dev->regmap, AL5_ITC_CPU_IRQ_CLR, status);
return IRQ_WAKE_THREAD;
}
static irqreturn_t allegro_irq_thread(int irq, void *data)
{
struct allegro_dev *dev = data;
/*
* The firmware is initialized after the mailbox is setup. We further
* check the AL5_ITC_CPU_IRQ_STA register, if the firmware actually
* triggered the interrupt. Although this should not happen, make sure
* that we ignore interrupts, if the mailbox is not initialized.
*/
if (!dev->mbox_status)
return IRQ_NONE;
allegro_mbox_notify(dev->mbox_status);
return IRQ_HANDLED;
}
static void allegro_copy_firmware(struct allegro_dev *dev,
const u8 * const buf, size_t size)
{
int err = 0;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"copy mcu firmware (%zu B) to SRAM\n", size);
err = regmap_bulk_write(dev->sram, 0x0, buf, size / 4);
if (err)
v4l2_err(&dev->v4l2_dev,
"failed to copy firmware: %d\n", err);
}
static void allegro_copy_fw_codec(struct allegro_dev *dev,
const u8 * const buf, size_t size)
{
int err;
dma_addr_t icache_offset, dcache_offset;
/*
* The downstream allocates 600 KB for the codec firmware to have some
* extra space for "possible extensions." My tests were fine with
* allocating just enough memory for the actual firmware, but I am not
* sure that the firmware really does not use the remaining space.
*/
err = allegro_alloc_buffer(dev, &dev->firmware, size);
if (err) {
v4l2_err(&dev->v4l2_dev,
"failed to allocate %zu bytes for firmware\n", size);
return;
}
v4l2_dbg(1, debug, &dev->v4l2_dev,
"copy codec firmware (%zd B) to phys %pad\n",
size, &dev->firmware.paddr);
memcpy(dev->firmware.vaddr, buf, size);
regmap_write(dev->regmap, AXI_ADDR_OFFSET_IP,
upper_32_bits(dev->firmware.paddr));
icache_offset = dev->firmware.paddr - MCU_CACHE_OFFSET;
v4l2_dbg(2, debug, &dev->v4l2_dev,
"icache_offset: msb = 0x%x, lsb = 0x%x\n",
upper_32_bits(icache_offset), lower_32_bits(icache_offset));
regmap_write(dev->regmap, AL5_ICACHE_ADDR_OFFSET_MSB,
upper_32_bits(icache_offset));
regmap_write(dev->regmap, AL5_ICACHE_ADDR_OFFSET_LSB,
lower_32_bits(icache_offset));
dcache_offset =
(dev->firmware.paddr & 0xffffffff00000000ULL) - MCU_CACHE_OFFSET;
v4l2_dbg(2, debug, &dev->v4l2_dev,
"dcache_offset: msb = 0x%x, lsb = 0x%x\n",
upper_32_bits(dcache_offset), lower_32_bits(dcache_offset));
regmap_write(dev->regmap, AL5_DCACHE_ADDR_OFFSET_MSB,
upper_32_bits(dcache_offset));
regmap_write(dev->regmap, AL5_DCACHE_ADDR_OFFSET_LSB,
lower_32_bits(dcache_offset));
}
static void allegro_free_fw_codec(struct allegro_dev *dev)
{
allegro_free_buffer(dev, &dev->firmware);
}
/*
* Control functions for the MCU
*/
static int allegro_mcu_enable_interrupts(struct allegro_dev *dev)
{
return regmap_write(dev->regmap, AL5_ITC_CPU_IRQ_MSK, BIT(0));
}
static int allegro_mcu_disable_interrupts(struct allegro_dev *dev)
{
return regmap_write(dev->regmap, AL5_ITC_CPU_IRQ_MSK, 0);
}
static int allegro_mcu_wait_for_sleep(struct allegro_dev *dev)
{
unsigned long timeout;
unsigned int status;
timeout = jiffies + msecs_to_jiffies(100);
while (regmap_read(dev->regmap, AL5_MCU_STA, &status) == 0 &&
status != AL5_MCU_STA_SLEEP) {
if (time_after(jiffies, timeout))
return -ETIMEDOUT;
cpu_relax();
}
return 0;
}
static int allegro_mcu_start(struct allegro_dev *dev)
{
unsigned long timeout;
unsigned int status;
int err;
err = regmap_write(dev->regmap, AL5_MCU_WAKEUP, BIT(0));
if (err)
return err;
timeout = jiffies + msecs_to_jiffies(100);
while (regmap_read(dev->regmap, AL5_MCU_STA, &status) == 0 &&
status == AL5_MCU_STA_SLEEP) {
if (time_after(jiffies, timeout))
return -ETIMEDOUT;
cpu_relax();
}
err = regmap_write(dev->regmap, AL5_MCU_WAKEUP, 0);
if (err)
return err;
return 0;
}
static int allegro_mcu_reset(struct allegro_dev *dev)
{
int err;
/*
* Ensure that the AL5_MCU_WAKEUP bit is set to 0 otherwise the mcu
* does not go to sleep after the reset.
*/
err = regmap_write(dev->regmap, AL5_MCU_WAKEUP, 0);
if (err)
return err;
err = regmap_write(dev->regmap,
AL5_MCU_RESET_MODE, AL5_MCU_RESET_MODE_SLEEP);
if (err < 0)
return err;
err = regmap_write(dev->regmap, AL5_MCU_RESET, AL5_MCU_RESET_SOFT);
if (err < 0)
return err;
return allegro_mcu_wait_for_sleep(dev);
}
static void allegro_mcu_interrupt(struct allegro_dev *dev)
{
regmap_write(dev->regmap, AL5_MCU_INTERRUPT, BIT(0));
}
static void allegro_destroy_channel(struct allegro_channel *channel)
{
struct allegro_dev *dev = channel->dev;
unsigned long timeout;
if (channel_exists(channel)) {
reinit_completion(&channel->completion);
allegro_mcu_send_destroy_channel(dev, channel);
timeout = wait_for_completion_timeout(&channel->completion,
msecs_to_jiffies(5000));
if (timeout == 0)
v4l2_warn(&dev->v4l2_dev,
"channel %d: timeout while destroying\n",
channel->mcu_channel_id);
channel->mcu_channel_id = -1;
}
destroy_intermediate_buffers(channel);
destroy_reference_buffers(channel);
v4l2_ctrl_grab(channel->mpeg_video_h264_profile, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_level, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_i_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_max_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_min_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_p_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_h264_b_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_profile, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_level, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_tier, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_i_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_max_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_min_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_p_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_hevc_b_frame_qp, false);
v4l2_ctrl_grab(channel->mpeg_video_frame_rc_enable, false);
v4l2_ctrl_grab(channel->mpeg_video_bitrate_mode, false);
v4l2_ctrl_grab(channel->mpeg_video_bitrate, false);
v4l2_ctrl_grab(channel->mpeg_video_bitrate_peak, false);
v4l2_ctrl_grab(channel->mpeg_video_cpb_size, false);
v4l2_ctrl_grab(channel->mpeg_video_gop_size, false);
if (channel->user_id != -1) {
clear_bit(channel->user_id, &dev->channel_user_ids);
channel->user_id = -1;
}
}
/*
* Create the MCU channel
*
* After the channel has been created, the picture size, format, colorspace
* and framerate are fixed. Also the codec, profile, bitrate, etc. cannot be
* changed anymore.
*
* The channel can be created only once. The MCU will accept source buffers
* and stream buffers only after a channel has been created.
*/
static int allegro_create_channel(struct allegro_channel *channel)
{
struct allegro_dev *dev = channel->dev;
unsigned long timeout;
if (channel_exists(channel)) {
v4l2_warn(&dev->v4l2_dev,
"channel already exists\n");
return 0;
}
channel->user_id = allegro_next_user_id(dev);
if (channel->user_id < 0) {
v4l2_err(&dev->v4l2_dev,
"no free channels available\n");
return -EBUSY;
}
set_bit(channel->user_id, &dev->channel_user_ids);
v4l2_dbg(1, debug, &dev->v4l2_dev,
"user %d: creating channel (%4.4s, %dx%d@%d)\n",
channel->user_id,
(char *)&channel->codec, channel->width, channel->height,
DIV_ROUND_UP(channel->framerate.numerator,
channel->framerate.denominator));
v4l2_ctrl_grab(channel->mpeg_video_h264_profile, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_level, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_i_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_max_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_min_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_p_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_h264_b_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_profile, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_level, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_tier, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_i_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_max_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_min_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_p_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_hevc_b_frame_qp, true);
v4l2_ctrl_grab(channel->mpeg_video_frame_rc_enable, true);
v4l2_ctrl_grab(channel->mpeg_video_bitrate_mode, true);
v4l2_ctrl_grab(channel->mpeg_video_bitrate, true);
v4l2_ctrl_grab(channel->mpeg_video_bitrate_peak, true);
v4l2_ctrl_grab(channel->mpeg_video_cpb_size, true);
v4l2_ctrl_grab(channel->mpeg_video_gop_size, true);
reinit_completion(&channel->completion);
allegro_mcu_send_create_channel(dev, channel);
timeout = wait_for_completion_timeout(&channel->completion,
msecs_to_jiffies(5000));
if (timeout == 0)
channel->error = -ETIMEDOUT;
if (channel->error)
goto err;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"channel %d: accepting buffers\n",
channel->mcu_channel_id);
return 0;
err:
allegro_destroy_channel(channel);
return channel->error;
}
/**
* allegro_channel_adjust() - Adjust channel parameters to current format
* @channel: the channel to adjust
*
* Various parameters of a channel and their limits depend on the currently
* set format. Adjust the parameters after a format change in one go.
*/
static void allegro_channel_adjust(struct allegro_channel *channel)
{
struct allegro_dev *dev = channel->dev;
u32 codec = channel->codec;
struct v4l2_ctrl *ctrl;
s64 min;
s64 max;
channel->sizeimage_encoded =
estimate_stream_size(channel->width, channel->height);
if (codec == V4L2_PIX_FMT_H264) {
ctrl = channel->mpeg_video_h264_level;
min = select_minimum_h264_level(channel->width, channel->height);
} else {
ctrl = channel->mpeg_video_hevc_level;
min = select_minimum_hevc_level(channel->width, channel->height);
}
if (ctrl->minimum > min)
v4l2_dbg(1, debug, &dev->v4l2_dev,
"%s.minimum: %lld -> %lld\n",
v4l2_ctrl_get_name(ctrl->id), ctrl->minimum, min);
v4l2_ctrl_lock(ctrl);
__v4l2_ctrl_modify_range(ctrl, min, ctrl->maximum,
ctrl->step, ctrl->default_value);
v4l2_ctrl_unlock(ctrl);
ctrl = channel->mpeg_video_bitrate;
if (codec == V4L2_PIX_FMT_H264)
max = h264_maximum_bitrate(v4l2_ctrl_g_ctrl(channel->mpeg_video_h264_level));
else
max = hevc_maximum_bitrate(v4l2_ctrl_g_ctrl(channel->mpeg_video_hevc_level));
if (ctrl->maximum < max)
v4l2_dbg(1, debug, &dev->v4l2_dev,
"%s: maximum: %lld -> %lld\n",
v4l2_ctrl_get_name(ctrl->id), ctrl->maximum, max);
v4l2_ctrl_lock(ctrl);
__v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max,
ctrl->step, ctrl->default_value);
v4l2_ctrl_unlock(ctrl);
ctrl = channel->mpeg_video_bitrate_peak;
v4l2_ctrl_lock(ctrl);
__v4l2_ctrl_modify_range(ctrl, ctrl->minimum, max,
ctrl->step, ctrl->default_value);
v4l2_ctrl_unlock(ctrl);
v4l2_ctrl_activate(channel->mpeg_video_h264_profile,
codec == V4L2_PIX_FMT_H264);
v4l2_ctrl_activate(channel->mpeg_video_h264_level,
codec == V4L2_PIX_FMT_H264);
v4l2_ctrl_activate(channel->mpeg_video_h264_i_frame_qp,
codec == V4L2_PIX_FMT_H264);
v4l2_ctrl_activate(channel->mpeg_video_h264_max_qp,
codec == V4L2_PIX_FMT_H264);
v4l2_ctrl_activate(channel->mpeg_video_h264_min_qp,
codec == V4L2_PIX_FMT_H264);
v4l2_ctrl_activate(channel->mpeg_video_h264_p_frame_qp,
codec == V4L2_PIX_FMT_H264);
v4l2_ctrl_activate(channel->mpeg_video_h264_b_frame_qp,
codec == V4L2_PIX_FMT_H264);
v4l2_ctrl_activate(channel->mpeg_video_hevc_profile,
codec == V4L2_PIX_FMT_HEVC);
v4l2_ctrl_activate(channel->mpeg_video_hevc_level,
codec == V4L2_PIX_FMT_HEVC);
v4l2_ctrl_activate(channel->mpeg_video_hevc_tier,
codec == V4L2_PIX_FMT_HEVC);
v4l2_ctrl_activate(channel->mpeg_video_hevc_i_frame_qp,
codec == V4L2_PIX_FMT_HEVC);
v4l2_ctrl_activate(channel->mpeg_video_hevc_max_qp,
codec == V4L2_PIX_FMT_HEVC);
v4l2_ctrl_activate(channel->mpeg_video_hevc_min_qp,
codec == V4L2_PIX_FMT_HEVC);
v4l2_ctrl_activate(channel->mpeg_video_hevc_p_frame_qp,
codec == V4L2_PIX_FMT_HEVC);
v4l2_ctrl_activate(channel->mpeg_video_hevc_b_frame_qp,
codec == V4L2_PIX_FMT_HEVC);
if (codec == V4L2_PIX_FMT_H264)
channel->log2_max_frame_num = LOG2_MAX_FRAME_NUM;
channel->temporal_mvp_enable = true;
channel->dbf_ovr_en = (codec == V4L2_PIX_FMT_H264);
channel->enable_deblocking_filter_override = (codec == V4L2_PIX_FMT_HEVC);
channel->enable_reordering = (codec == V4L2_PIX_FMT_HEVC);
channel->enable_loop_filter_across_tiles = true;
channel->enable_loop_filter_across_slices = true;
if (codec == V4L2_PIX_FMT_H264) {
channel->b_hrz_me_range = 8;
channel->b_vrt_me_range = 8;
channel->p_hrz_me_range = 16;
channel->p_vrt_me_range = 16;
channel->max_cu_size = ilog2(16);
channel->min_cu_size = ilog2(8);
channel->max_tu_size = ilog2(4);
channel->min_tu_size = ilog2(4);
} else {
channel->b_hrz_me_range = 16;
channel->b_vrt_me_range = 16;
channel->p_hrz_me_range = 32;
channel->p_vrt_me_range = 32;
channel->max_cu_size = ilog2(32);
channel->min_cu_size = ilog2(8);
channel->max_tu_size = ilog2(32);
channel->min_tu_size = ilog2(4);
}
channel->max_transfo_depth_intra = 1;
channel->max_transfo_depth_inter = 1;
}
static void allegro_set_default_params(struct allegro_channel *channel)
{
channel->width = ALLEGRO_WIDTH_DEFAULT;
channel->height = ALLEGRO_HEIGHT_DEFAULT;
channel->stride = round_up(channel->width, 32);
channel->framerate = ALLEGRO_FRAMERATE_DEFAULT;
channel->colorspace = V4L2_COLORSPACE_REC709;
channel->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
channel->quantization = V4L2_QUANTIZATION_DEFAULT;
channel->xfer_func = V4L2_XFER_FUNC_DEFAULT;
channel->pixelformat = V4L2_PIX_FMT_NV12;
channel->sizeimage_raw = channel->stride * channel->height * 3 / 2;
channel->codec = V4L2_PIX_FMT_H264;
}
static int allegro_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[],
struct device *alloc_devs[])
{
struct allegro_channel *channel = vb2_get_drv_priv(vq);
struct allegro_dev *dev = channel->dev;
v4l2_dbg(2, debug, &dev->v4l2_dev,
"%s: queue setup[%s]: nplanes = %d\n",
V4L2_TYPE_IS_OUTPUT(vq->type) ? "output" : "capture",
*nplanes == 0 ? "REQBUFS" : "CREATE_BUFS", *nplanes);
if (*nplanes != 0) {
if (V4L2_TYPE_IS_OUTPUT(vq->type)) {
if (sizes[0] < channel->sizeimage_raw)
return -EINVAL;
} else {
if (sizes[0] < channel->sizeimage_encoded)
return -EINVAL;
}
} else {
*nplanes = 1;
if (V4L2_TYPE_IS_OUTPUT(vq->type))
sizes[0] = channel->sizeimage_raw;
else
sizes[0] = channel->sizeimage_encoded;
}
return 0;
}
static int allegro_buf_prepare(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct allegro_channel *channel = vb2_get_drv_priv(vb->vb2_queue);
struct allegro_dev *dev = channel->dev;
if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
if (vbuf->field == V4L2_FIELD_ANY)
vbuf->field = V4L2_FIELD_NONE;
if (vbuf->field != V4L2_FIELD_NONE) {
v4l2_err(&dev->v4l2_dev,
"channel %d: unsupported field\n",
channel->mcu_channel_id);
return -EINVAL;
}
}
return 0;
}
static void allegro_buf_queue(struct vb2_buffer *vb)
{
struct allegro_channel *channel = vb2_get_drv_priv(vb->vb2_queue);
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct vb2_queue *q = vb->vb2_queue;
if (V4L2_TYPE_IS_CAPTURE(q->type) &&
vb2_is_streaming(q) &&
v4l2_m2m_dst_buf_is_last(channel->fh.m2m_ctx)) {
unsigned int i;
for (i = 0; i < vb->num_planes; i++)
vb->planes[i].bytesused = 0;
vbuf->field = V4L2_FIELD_NONE;
vbuf->sequence = channel->csequence++;
v4l2_m2m_last_buffer_done(channel->fh.m2m_ctx, vbuf);
allegro_channel_eos_event(channel);
return;
}
v4l2_m2m_buf_queue(channel->fh.m2m_ctx, vbuf);
}
static int allegro_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct allegro_channel *channel = vb2_get_drv_priv(q);
struct allegro_dev *dev = channel->dev;
v4l2_dbg(2, debug, &dev->v4l2_dev,
"%s: start streaming\n",
V4L2_TYPE_IS_OUTPUT(q->type) ? "output" : "capture");
v4l2_m2m_update_start_streaming_state(channel->fh.m2m_ctx, q);
if (V4L2_TYPE_IS_OUTPUT(q->type))
channel->osequence = 0;
else
channel->csequence = 0;
return 0;
}
static void allegro_stop_streaming(struct vb2_queue *q)
{
struct allegro_channel *channel = vb2_get_drv_priv(q);
struct allegro_dev *dev = channel->dev;
struct vb2_v4l2_buffer *buffer;
struct allegro_m2m_buffer *shadow, *tmp;
v4l2_dbg(2, debug, &dev->v4l2_dev,
"%s: stop streaming\n",
V4L2_TYPE_IS_OUTPUT(q->type) ? "output" : "capture");
if (V4L2_TYPE_IS_OUTPUT(q->type)) {
mutex_lock(&channel->shadow_list_lock);
list_for_each_entry_safe(shadow, tmp,
&channel->source_shadow_list, head) {
list_del(&shadow->head);
v4l2_m2m_buf_done(&shadow->buf.vb, VB2_BUF_STATE_ERROR);
}
mutex_unlock(&channel->shadow_list_lock);
while ((buffer = v4l2_m2m_src_buf_remove(channel->fh.m2m_ctx)))
v4l2_m2m_buf_done(buffer, VB2_BUF_STATE_ERROR);
} else {
mutex_lock(&channel->shadow_list_lock);
list_for_each_entry_safe(shadow, tmp,
&channel->stream_shadow_list, head) {
list_del(&shadow->head);
v4l2_m2m_buf_done(&shadow->buf.vb, VB2_BUF_STATE_ERROR);
}
mutex_unlock(&channel->shadow_list_lock);
allegro_destroy_channel(channel);
while ((buffer = v4l2_m2m_dst_buf_remove(channel->fh.m2m_ctx)))
v4l2_m2m_buf_done(buffer, VB2_BUF_STATE_ERROR);
}
v4l2_m2m_update_stop_streaming_state(channel->fh.m2m_ctx, q);
if (V4L2_TYPE_IS_OUTPUT(q->type) &&
v4l2_m2m_has_stopped(channel->fh.m2m_ctx))
allegro_channel_eos_event(channel);
}
static const struct vb2_ops allegro_queue_ops = {
.queue_setup = allegro_queue_setup,
.buf_prepare = allegro_buf_prepare,
.buf_queue = allegro_buf_queue,
.start_streaming = allegro_start_streaming,
.stop_streaming = allegro_stop_streaming,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
};
static int allegro_queue_init(void *priv,
struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
int err;
struct allegro_channel *channel = priv;
src_vq->dev = &channel->dev->plat_dev->dev;
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
src_vq->io_modes = VB2_DMABUF | VB2_MMAP;
src_vq->mem_ops = &vb2_dma_contig_memops;
src_vq->drv_priv = channel;
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
src_vq->ops = &allegro_queue_ops;
src_vq->buf_struct_size = sizeof(struct allegro_m2m_buffer);
src_vq->lock = &channel->dev->lock;
err = vb2_queue_init(src_vq);
if (err)
return err;
dst_vq->dev = &channel->dev->plat_dev->dev;
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
dst_vq->io_modes = VB2_DMABUF | VB2_MMAP;
dst_vq->mem_ops = &vb2_dma_contig_memops;
dst_vq->drv_priv = channel;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->ops = &allegro_queue_ops;
dst_vq->buf_struct_size = sizeof(struct allegro_m2m_buffer);
dst_vq->lock = &channel->dev->lock;
err = vb2_queue_init(dst_vq);
if (err)
return err;
return 0;
}
static int allegro_clamp_qp(struct allegro_channel *channel,
struct v4l2_ctrl *ctrl)
{
struct v4l2_ctrl *next_ctrl;
if (ctrl->id == V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP)
next_ctrl = channel->mpeg_video_h264_p_frame_qp;
else if (ctrl->id == V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP)
next_ctrl = channel->mpeg_video_h264_b_frame_qp;
else
return 0;
/* Modify range automatically updates the value */
__v4l2_ctrl_modify_range(next_ctrl, ctrl->val, 51, 1, ctrl->val);
return allegro_clamp_qp(channel, next_ctrl);
}
static int allegro_clamp_bitrate(struct allegro_channel *channel,
struct v4l2_ctrl *ctrl)
{
struct v4l2_ctrl *ctrl_bitrate = channel->mpeg_video_bitrate;
struct v4l2_ctrl *ctrl_bitrate_peak = channel->mpeg_video_bitrate_peak;
if (ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR &&
ctrl_bitrate_peak->val < ctrl_bitrate->val)
ctrl_bitrate_peak->val = ctrl_bitrate->val;
return 0;
}
static int allegro_try_ctrl(struct v4l2_ctrl *ctrl)
{
struct allegro_channel *channel = container_of(ctrl->handler,
struct allegro_channel,
ctrl_handler);
switch (ctrl->id) {
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
allegro_clamp_bitrate(channel, ctrl);
break;
}
return 0;
}
static int allegro_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct allegro_channel *channel = container_of(ctrl->handler,
struct allegro_channel,
ctrl_handler);
struct allegro_dev *dev = channel->dev;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"s_ctrl: %s = %d\n", v4l2_ctrl_get_name(ctrl->id), ctrl->val);
switch (ctrl->id) {
case V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE:
channel->frame_rc_enable = ctrl->val;
break;
case V4L2_CID_MPEG_VIDEO_BITRATE_MODE:
channel->bitrate = channel->mpeg_video_bitrate->val;
channel->bitrate_peak = channel->mpeg_video_bitrate_peak->val;
v4l2_ctrl_activate(channel->mpeg_video_bitrate_peak,
ctrl->val == V4L2_MPEG_VIDEO_BITRATE_MODE_VBR);
break;
case V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP:
case V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP:
case V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP:
allegro_clamp_qp(channel, ctrl);
break;
}
return 0;
}
static const struct v4l2_ctrl_ops allegro_ctrl_ops = {
.try_ctrl = allegro_try_ctrl,
.s_ctrl = allegro_s_ctrl,
};
static int allegro_open(struct file *file)
{
struct video_device *vdev = video_devdata(file);
struct allegro_dev *dev = video_get_drvdata(vdev);
struct allegro_channel *channel = NULL;
struct v4l2_ctrl_handler *handler;
u64 mask;
int ret;
unsigned int bitrate_max;
unsigned int bitrate_def;
unsigned int cpb_size_max;
unsigned int cpb_size_def;
channel = kzalloc(sizeof(*channel), GFP_KERNEL);
if (!channel)
return -ENOMEM;
v4l2_fh_init(&channel->fh, vdev);
init_completion(&channel->completion);
INIT_LIST_HEAD(&channel->source_shadow_list);
INIT_LIST_HEAD(&channel->stream_shadow_list);
mutex_init(&channel->shadow_list_lock);
channel->dev = dev;
allegro_set_default_params(channel);
handler = &channel->ctrl_handler;
v4l2_ctrl_handler_init(handler, 0);
channel->mpeg_video_h264_profile = v4l2_ctrl_new_std_menu(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_PROFILE,
V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE, 0x0,
V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE);
mask = 1 << V4L2_MPEG_VIDEO_H264_LEVEL_1B;
channel->mpeg_video_h264_level = v4l2_ctrl_new_std_menu(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_LEVEL,
V4L2_MPEG_VIDEO_H264_LEVEL_5_1, mask,
V4L2_MPEG_VIDEO_H264_LEVEL_5_1);
channel->mpeg_video_h264_i_frame_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_I_FRAME_QP,
0, 51, 1, 30);
channel->mpeg_video_h264_max_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_MAX_QP,
0, 51, 1, 51);
channel->mpeg_video_h264_min_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_MIN_QP,
0, 51, 1, 0);
channel->mpeg_video_h264_p_frame_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_P_FRAME_QP,
0, 51, 1, 30);
channel->mpeg_video_h264_b_frame_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_B_FRAME_QP,
0, 51, 1, 30);
channel->mpeg_video_hevc_profile =
v4l2_ctrl_new_std_menu(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_HEVC_PROFILE,
V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN, 0x0,
V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN);
channel->mpeg_video_hevc_level =
v4l2_ctrl_new_std_menu(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_HEVC_LEVEL,
V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1, 0x0,
V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1);
channel->mpeg_video_hevc_tier =
v4l2_ctrl_new_std_menu(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_HEVC_TIER,
V4L2_MPEG_VIDEO_HEVC_TIER_HIGH, 0x0,
V4L2_MPEG_VIDEO_HEVC_TIER_MAIN);
channel->mpeg_video_hevc_i_frame_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_HEVC_I_FRAME_QP,
0, 51, 1, 30);
channel->mpeg_video_hevc_max_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_HEVC_MAX_QP,
0, 51, 1, 51);
channel->mpeg_video_hevc_min_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_HEVC_MIN_QP,
0, 51, 1, 0);
channel->mpeg_video_hevc_p_frame_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_HEVC_P_FRAME_QP,
0, 51, 1, 30);
channel->mpeg_video_hevc_b_frame_qp =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_HEVC_B_FRAME_QP,
0, 51, 1, 30);
channel->mpeg_video_frame_rc_enable =
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_FRAME_RC_ENABLE,
false, 0x1,
true, false);
channel->mpeg_video_bitrate_mode = v4l2_ctrl_new_std_menu(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE_MODE,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR, 0,
V4L2_MPEG_VIDEO_BITRATE_MODE_CBR);
if (channel->codec == V4L2_PIX_FMT_H264) {
bitrate_max = h264_maximum_bitrate(V4L2_MPEG_VIDEO_H264_LEVEL_5_1);
bitrate_def = h264_maximum_bitrate(V4L2_MPEG_VIDEO_H264_LEVEL_5_1);
cpb_size_max = h264_maximum_cpb_size(V4L2_MPEG_VIDEO_H264_LEVEL_5_1);
cpb_size_def = h264_maximum_cpb_size(V4L2_MPEG_VIDEO_H264_LEVEL_5_1);
} else {
bitrate_max = hevc_maximum_bitrate(V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1);
bitrate_def = hevc_maximum_bitrate(V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1);
cpb_size_max = hevc_maximum_cpb_size(V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1);
cpb_size_def = hevc_maximum_cpb_size(V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1);
}
channel->mpeg_video_bitrate = v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE,
0, bitrate_max, 1, bitrate_def);
channel->mpeg_video_bitrate_peak = v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_BITRATE_PEAK,
0, bitrate_max, 1, bitrate_def);
channel->mpeg_video_cpb_size = v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_H264_CPB_SIZE,
0, cpb_size_max, 1, cpb_size_def);
channel->mpeg_video_gop_size = v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MPEG_VIDEO_GOP_SIZE,
0, ALLEGRO_GOP_SIZE_MAX,
1, ALLEGRO_GOP_SIZE_DEFAULT);
v4l2_ctrl_new_std(handler,
&allegro_ctrl_ops,
V4L2_CID_MIN_BUFFERS_FOR_OUTPUT,
1, 32,
1, 1);
if (handler->error != 0) {
ret = handler->error;
goto error;
}
channel->fh.ctrl_handler = handler;
v4l2_ctrl_cluster(3, &channel->mpeg_video_bitrate_mode);
v4l2_ctrl_handler_setup(handler);
channel->mcu_channel_id = -1;
channel->user_id = -1;
INIT_LIST_HEAD(&channel->buffers_reference);
INIT_LIST_HEAD(&channel->buffers_intermediate);
channel->fh.m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, channel,
allegro_queue_init);
if (IS_ERR(channel->fh.m2m_ctx)) {
ret = PTR_ERR(channel->fh.m2m_ctx);
goto error;
}
list_add(&channel->list, &dev->channels);
file->private_data = &channel->fh;
v4l2_fh_add(&channel->fh);
allegro_channel_adjust(channel);
return 0;
error:
v4l2_ctrl_handler_free(handler);
kfree(channel);
return ret;
}
static int allegro_release(struct file *file)
{
struct allegro_channel *channel = fh_to_channel(file->private_data);
v4l2_m2m_ctx_release(channel->fh.m2m_ctx);
list_del(&channel->list);
v4l2_ctrl_handler_free(&channel->ctrl_handler);
v4l2_fh_del(&channel->fh);
v4l2_fh_exit(&channel->fh);
kfree(channel);
return 0;
}
static int allegro_querycap(struct file *file, void *fh,
struct v4l2_capability *cap)
{
struct video_device *vdev = video_devdata(file);
struct allegro_dev *dev = video_get_drvdata(vdev);
strscpy(cap->driver, KBUILD_MODNAME, sizeof(cap->driver));
strscpy(cap->card, "Allegro DVT Video Encoder", sizeof(cap->card));
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
dev_name(&dev->plat_dev->dev));
return 0;
}
static int allegro_enum_fmt_vid(struct file *file, void *fh,
struct v4l2_fmtdesc *f)
{
switch (f->type) {
case V4L2_BUF_TYPE_VIDEO_OUTPUT:
if (f->index >= 1)
return -EINVAL;
f->pixelformat = V4L2_PIX_FMT_NV12;
break;
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
if (f->index >= 2)
return -EINVAL;
if (f->index == 0)
f->pixelformat = V4L2_PIX_FMT_H264;
if (f->index == 1)
f->pixelformat = V4L2_PIX_FMT_HEVC;
break;
default:
return -EINVAL;
}
return 0;
}
static int allegro_g_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_format *f)
{
struct allegro_channel *channel = fh_to_channel(fh);
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.width = channel->width;
f->fmt.pix.height = channel->height;
f->fmt.pix.colorspace = channel->colorspace;
f->fmt.pix.ycbcr_enc = channel->ycbcr_enc;
f->fmt.pix.quantization = channel->quantization;
f->fmt.pix.xfer_func = channel->xfer_func;
f->fmt.pix.pixelformat = channel->codec;
f->fmt.pix.bytesperline = 0;
f->fmt.pix.sizeimage = channel->sizeimage_encoded;
return 0;
}
static int allegro_try_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_format *f)
{
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.width = clamp_t(__u32, f->fmt.pix.width,
ALLEGRO_WIDTH_MIN, ALLEGRO_WIDTH_MAX);
f->fmt.pix.height = clamp_t(__u32, f->fmt.pix.height,
ALLEGRO_HEIGHT_MIN, ALLEGRO_HEIGHT_MAX);
if (f->fmt.pix.pixelformat != V4L2_PIX_FMT_HEVC &&
f->fmt.pix.pixelformat != V4L2_PIX_FMT_H264)
f->fmt.pix.pixelformat = V4L2_PIX_FMT_H264;
f->fmt.pix.bytesperline = 0;
f->fmt.pix.sizeimage =
estimate_stream_size(f->fmt.pix.width, f->fmt.pix.height);
return 0;
}
static int allegro_s_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_format *f)
{
struct allegro_channel *channel = fh_to_channel(fh);
struct vb2_queue *vq;
int err;
err = allegro_try_fmt_vid_cap(file, fh, f);
if (err)
return err;
vq = v4l2_m2m_get_vq(channel->fh.m2m_ctx, f->type);
if (!vq)
return -EINVAL;
if (vb2_is_busy(vq))
return -EBUSY;
channel->codec = f->fmt.pix.pixelformat;
allegro_channel_adjust(channel);
return 0;
}
static int allegro_g_fmt_vid_out(struct file *file, void *fh,
struct v4l2_format *f)
{
struct allegro_channel *channel = fh_to_channel(fh);
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.width = channel->width;
f->fmt.pix.height = channel->height;
f->fmt.pix.colorspace = channel->colorspace;
f->fmt.pix.ycbcr_enc = channel->ycbcr_enc;
f->fmt.pix.quantization = channel->quantization;
f->fmt.pix.xfer_func = channel->xfer_func;
f->fmt.pix.pixelformat = channel->pixelformat;
f->fmt.pix.bytesperline = channel->stride;
f->fmt.pix.sizeimage = channel->sizeimage_raw;
return 0;
}
static int allegro_try_fmt_vid_out(struct file *file, void *fh,
struct v4l2_format *f)
{
f->fmt.pix.field = V4L2_FIELD_NONE;
/*
* The firmware of the Allegro codec handles the padding internally
* and expects the visual frame size when configuring a channel.
* Therefore, unlike other encoder drivers, this driver does not round
* up the width and height to macroblock alignment and does not
* implement the selection api.
*/
f->fmt.pix.width = clamp_t(__u32, f->fmt.pix.width,
ALLEGRO_WIDTH_MIN, ALLEGRO_WIDTH_MAX);
f->fmt.pix.height = clamp_t(__u32, f->fmt.pix.height,
ALLEGRO_HEIGHT_MIN, ALLEGRO_HEIGHT_MAX);
f->fmt.pix.pixelformat = V4L2_PIX_FMT_NV12;
f->fmt.pix.bytesperline = round_up(f->fmt.pix.width, 32);
f->fmt.pix.sizeimage =
f->fmt.pix.bytesperline * f->fmt.pix.height * 3 / 2;
return 0;
}
static int allegro_s_fmt_vid_out(struct file *file, void *fh,
struct v4l2_format *f)
{
struct allegro_channel *channel = fh_to_channel(fh);
int err;
err = allegro_try_fmt_vid_out(file, fh, f);
if (err)
return err;
channel->width = f->fmt.pix.width;
channel->height = f->fmt.pix.height;
channel->stride = f->fmt.pix.bytesperline;
channel->sizeimage_raw = f->fmt.pix.sizeimage;
channel->colorspace = f->fmt.pix.colorspace;
channel->ycbcr_enc = f->fmt.pix.ycbcr_enc;
channel->quantization = f->fmt.pix.quantization;
channel->xfer_func = f->fmt.pix.xfer_func;
allegro_channel_adjust(channel);
return 0;
}
static int allegro_channel_cmd_stop(struct allegro_channel *channel)
{
if (v4l2_m2m_has_stopped(channel->fh.m2m_ctx))
allegro_channel_eos_event(channel);
return 0;
}
static int allegro_channel_cmd_start(struct allegro_channel *channel)
{
if (v4l2_m2m_has_stopped(channel->fh.m2m_ctx))
vb2_clear_last_buffer_dequeued(&channel->fh.m2m_ctx->cap_q_ctx.q);
return 0;
}
static int allegro_encoder_cmd(struct file *file, void *fh,
struct v4l2_encoder_cmd *cmd)
{
struct allegro_channel *channel = fh_to_channel(fh);
int err;
err = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, cmd);
if (err)
return err;
err = v4l2_m2m_ioctl_encoder_cmd(file, fh, cmd);
if (err)
return err;
if (cmd->cmd == V4L2_ENC_CMD_STOP)
err = allegro_channel_cmd_stop(channel);
if (cmd->cmd == V4L2_ENC_CMD_START)
err = allegro_channel_cmd_start(channel);
return err;
}
static int allegro_enum_framesizes(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize)
{
switch (fsize->pixel_format) {
case V4L2_PIX_FMT_HEVC:
case V4L2_PIX_FMT_H264:
case V4L2_PIX_FMT_NV12:
break;
default:
return -EINVAL;
}
if (fsize->index)
return -EINVAL;
fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
fsize->stepwise.min_width = ALLEGRO_WIDTH_MIN;
fsize->stepwise.max_width = ALLEGRO_WIDTH_MAX;
fsize->stepwise.step_width = 1;
fsize->stepwise.min_height = ALLEGRO_HEIGHT_MIN;
fsize->stepwise.max_height = ALLEGRO_HEIGHT_MAX;
fsize->stepwise.step_height = 1;
return 0;
}
static int allegro_ioctl_streamon(struct file *file, void *priv,
enum v4l2_buf_type type)
{
struct v4l2_fh *fh = file->private_data;
struct allegro_channel *channel = fh_to_channel(fh);
int err;
if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
err = allegro_create_channel(channel);
if (err)
return err;
}
return v4l2_m2m_streamon(file, fh->m2m_ctx, type);
}
static int allegro_g_parm(struct file *file, void *fh,
struct v4l2_streamparm *a)
{
struct allegro_channel *channel = fh_to_channel(fh);
struct v4l2_fract *timeperframe;
if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
timeperframe = &a->parm.output.timeperframe;
timeperframe->numerator = channel->framerate.denominator;
timeperframe->denominator = channel->framerate.numerator;
return 0;
}
static int allegro_s_parm(struct file *file, void *fh,
struct v4l2_streamparm *a)
{
struct allegro_channel *channel = fh_to_channel(fh);
struct v4l2_fract *timeperframe;
int div;
if (a->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
return -EINVAL;
a->parm.output.capability = V4L2_CAP_TIMEPERFRAME;
timeperframe = &a->parm.output.timeperframe;
if (timeperframe->numerator == 0 || timeperframe->denominator == 0)
return allegro_g_parm(file, fh, a);
div = gcd(timeperframe->denominator, timeperframe->numerator);
channel->framerate.numerator = timeperframe->denominator / div;
channel->framerate.denominator = timeperframe->numerator / div;
return 0;
}
static int allegro_subscribe_event(struct v4l2_fh *fh,
const struct v4l2_event_subscription *sub)
{
switch (sub->type) {
case V4L2_EVENT_EOS:
return v4l2_event_subscribe(fh, sub, 0, NULL);
default:
return v4l2_ctrl_subscribe_event(fh, sub);
}
}
static const struct v4l2_ioctl_ops allegro_ioctl_ops = {
.vidioc_querycap = allegro_querycap,
.vidioc_enum_fmt_vid_cap = allegro_enum_fmt_vid,
.vidioc_enum_fmt_vid_out = allegro_enum_fmt_vid,
.vidioc_g_fmt_vid_cap = allegro_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = allegro_try_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = allegro_s_fmt_vid_cap,
.vidioc_g_fmt_vid_out = allegro_g_fmt_vid_out,
.vidioc_try_fmt_vid_out = allegro_try_fmt_vid_out,
.vidioc_s_fmt_vid_out = allegro_s_fmt_vid_out,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_streamon = allegro_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
.vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
.vidioc_encoder_cmd = allegro_encoder_cmd,
.vidioc_enum_framesizes = allegro_enum_framesizes,
.vidioc_g_parm = allegro_g_parm,
.vidioc_s_parm = allegro_s_parm,
.vidioc_subscribe_event = allegro_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};
static const struct v4l2_file_operations allegro_fops = {
.owner = THIS_MODULE,
.open = allegro_open,
.release = allegro_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static int allegro_register_device(struct allegro_dev *dev)
{
struct video_device *video_dev = &dev->video_dev;
strscpy(video_dev->name, "allegro", sizeof(video_dev->name));
video_dev->fops = &allegro_fops;
video_dev->ioctl_ops = &allegro_ioctl_ops;
video_dev->release = video_device_release_empty;
video_dev->lock = &dev->lock;
video_dev->v4l2_dev = &dev->v4l2_dev;
video_dev->vfl_dir = VFL_DIR_M2M;
video_dev->device_caps = V4L2_CAP_VIDEO_M2M | V4L2_CAP_STREAMING;
video_set_drvdata(video_dev, dev);
return video_register_device(video_dev, VFL_TYPE_VIDEO, 0);
}
static void allegro_device_run(void *priv)
{
struct allegro_channel *channel = priv;
struct allegro_dev *dev = channel->dev;
struct vb2_v4l2_buffer *src_buf;
struct vb2_v4l2_buffer *dst_buf;
dma_addr_t src_y;
dma_addr_t src_uv;
dma_addr_t dst_addr;
unsigned long dst_size;
u64 src_handle;
u64 dst_handle;
dst_buf = v4l2_m2m_dst_buf_remove(channel->fh.m2m_ctx);
dst_addr = vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0);
dst_size = vb2_plane_size(&dst_buf->vb2_buf, 0);
dst_handle = allegro_put_buffer(channel, &channel->stream_shadow_list,
dst_buf);
allegro_mcu_send_put_stream_buffer(dev, channel, dst_addr, dst_size,
dst_handle);
src_buf = v4l2_m2m_src_buf_remove(channel->fh.m2m_ctx);
src_buf->sequence = channel->osequence++;
src_y = vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0);
src_uv = src_y + (channel->stride * channel->height);
src_handle = allegro_put_buffer(channel, &channel->source_shadow_list,
src_buf);
allegro_mcu_send_encode_frame(dev, channel, src_y, src_uv, src_handle);
v4l2_m2m_job_finish(dev->m2m_dev, channel->fh.m2m_ctx);
}
static const struct v4l2_m2m_ops allegro_m2m_ops = {
.device_run = allegro_device_run,
};
static int allegro_mcu_hw_init(struct allegro_dev *dev,
const struct fw_info *info)
{
int err;
dev->mbox_command = allegro_mbox_init(dev, info->mailbox_cmd,
info->mailbox_size);
dev->mbox_status = allegro_mbox_init(dev, info->mailbox_status,
info->mailbox_size);
if (IS_ERR(dev->mbox_command) || IS_ERR(dev->mbox_status)) {
v4l2_err(&dev->v4l2_dev,
"failed to initialize mailboxes\n");
return -EIO;
}
allegro_mcu_enable_interrupts(dev);
/* The mcu sends INIT after reset. */
allegro_mcu_start(dev);
err = allegro_mcu_wait_for_init_timeout(dev, 5000);
if (err < 0) {
v4l2_err(&dev->v4l2_dev,
"mcu did not send INIT after reset\n");
err = -EIO;
goto err_disable_interrupts;
}
err = allegro_alloc_buffer(dev, &dev->suballocator,
info->suballocator_size);
if (err) {
v4l2_err(&dev->v4l2_dev,
"failed to allocate %zu bytes for suballocator\n",
info->suballocator_size);
goto err_reset_mcu;
}
allegro_mcu_send_init(dev, dev->suballocator.paddr,
dev->suballocator.size);
err = allegro_mcu_wait_for_init_timeout(dev, 5000);
if (err < 0) {
v4l2_err(&dev->v4l2_dev,
"mcu failed to configure sub-allocator\n");
err = -EIO;
goto err_free_suballocator;
}
return 0;
err_free_suballocator:
allegro_free_buffer(dev, &dev->suballocator);
err_reset_mcu:
allegro_mcu_reset(dev);
err_disable_interrupts:
allegro_mcu_disable_interrupts(dev);
return err;
}
static int allegro_mcu_hw_deinit(struct allegro_dev *dev)
{
int err;
err = allegro_mcu_reset(dev);
if (err)
v4l2_warn(&dev->v4l2_dev,
"mcu failed to enter sleep state\n");
err = allegro_mcu_disable_interrupts(dev);
if (err)
v4l2_warn(&dev->v4l2_dev,
"failed to disable interrupts\n");
allegro_free_buffer(dev, &dev->suballocator);
return 0;
}
static void allegro_fw_callback(const struct firmware *fw, void *context)
{
struct allegro_dev *dev = context;
const char *fw_codec_name = "al5e.fw";
const struct firmware *fw_codec;
int err;
if (!fw)
return;
v4l2_dbg(1, debug, &dev->v4l2_dev,
"requesting codec firmware '%s'\n", fw_codec_name);
err = request_firmware(&fw_codec, fw_codec_name, &dev->plat_dev->dev);
if (err)
goto err_release_firmware;
dev->fw_info = allegro_get_firmware_info(dev, fw, fw_codec);
if (!dev->fw_info) {
v4l2_err(&dev->v4l2_dev, "firmware is not supported\n");
goto err_release_firmware_codec;
}
v4l2_info(&dev->v4l2_dev,
"using mcu firmware version '%s'\n", dev->fw_info->version);
/* Ensure that the mcu is sleeping at the reset vector */
err = allegro_mcu_reset(dev);
if (err) {
v4l2_err(&dev->v4l2_dev, "failed to reset mcu\n");
goto err_release_firmware_codec;
}
allegro_copy_firmware(dev, fw->data, fw->size);
allegro_copy_fw_codec(dev, fw_codec->data, fw_codec->size);
err = allegro_mcu_hw_init(dev, dev->fw_info);
if (err) {
v4l2_err(&dev->v4l2_dev, "failed to initialize mcu\n");
goto err_free_fw_codec;
}
dev->m2m_dev = v4l2_m2m_init(&allegro_m2m_ops);
if (IS_ERR(dev->m2m_dev)) {
v4l2_err(&dev->v4l2_dev, "failed to init mem2mem device\n");
goto err_mcu_hw_deinit;
}
err = allegro_register_device(dev);
if (err) {
v4l2_err(&dev->v4l2_dev, "failed to register video device\n");
goto err_m2m_release;
}
v4l2_dbg(1, debug, &dev->v4l2_dev,
"allegro codec registered as /dev/video%d\n",
dev->video_dev.num);
release_firmware(fw_codec);
release_firmware(fw);
return;
err_m2m_release:
v4l2_m2m_release(dev->m2m_dev);
dev->m2m_dev = NULL;
err_mcu_hw_deinit:
allegro_mcu_hw_deinit(dev);
err_free_fw_codec:
allegro_free_fw_codec(dev);
err_release_firmware_codec:
release_firmware(fw_codec);
err_release_firmware:
release_firmware(fw);
}
static int allegro_firmware_request_nowait(struct allegro_dev *dev)
{
const char *fw = "al5e_b.fw";
v4l2_dbg(1, debug, &dev->v4l2_dev,
"requesting firmware '%s'\n", fw);
return request_firmware_nowait(THIS_MODULE, true, fw,
&dev->plat_dev->dev, GFP_KERNEL, dev,
allegro_fw_callback);
}
static int allegro_probe(struct platform_device *pdev)
{
struct allegro_dev *dev;
struct resource *res, *sram_res;
int ret;
int irq;
void __iomem *regs, *sram_regs;
dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
dev->plat_dev = pdev;
init_completion(&dev->init_complete);
INIT_LIST_HEAD(&dev->channels);
mutex_init(&dev->lock);
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "regs");
if (!res) {
dev_err(&pdev->dev,
"regs resource missing from device tree\n");
return -EINVAL;
}
regs = devm_ioremap(&pdev->dev, res->start, resource_size(res));
if (!regs) {
dev_err(&pdev->dev, "failed to map registers\n");
return -ENOMEM;
}
dev->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
&allegro_regmap_config);
if (IS_ERR(dev->regmap)) {
dev_err(&pdev->dev, "failed to init regmap\n");
return PTR_ERR(dev->regmap);
}
sram_res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "sram");
if (!sram_res) {
dev_err(&pdev->dev,
"sram resource missing from device tree\n");
return -EINVAL;
}
sram_regs = devm_ioremap(&pdev->dev,
sram_res->start,
resource_size(sram_res));
if (!sram_regs) {
dev_err(&pdev->dev, "failed to map sram\n");
return -ENOMEM;
}
dev->sram = devm_regmap_init_mmio(&pdev->dev, sram_regs,
&allegro_sram_config);
if (IS_ERR(dev->sram)) {
dev_err(&pdev->dev, "failed to init sram\n");
return PTR_ERR(dev->sram);
}
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
ret = devm_request_threaded_irq(&pdev->dev, irq,
allegro_hardirq,
allegro_irq_thread,
IRQF_SHARED, dev_name(&pdev->dev), dev);
if (ret < 0) {
dev_err(&pdev->dev, "failed to request irq: %d\n", ret);
return ret;
}
ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
if (ret)
return ret;
platform_set_drvdata(pdev, dev);
ret = allegro_firmware_request_nowait(dev);
if (ret < 0) {
v4l2_err(&dev->v4l2_dev,
"failed to request firmware: %d\n", ret);
return ret;
}
return 0;
}
static int allegro_remove(struct platform_device *pdev)
{
struct allegro_dev *dev = platform_get_drvdata(pdev);
video_unregister_device(&dev->video_dev);
if (dev->m2m_dev)
v4l2_m2m_release(dev->m2m_dev);
allegro_mcu_hw_deinit(dev);
allegro_free_fw_codec(dev);
v4l2_device_unregister(&dev->v4l2_dev);
return 0;
}
static const struct of_device_id allegro_dt_ids[] = {
{ .compatible = "allegro,al5e-1.1" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, allegro_dt_ids);
static struct platform_driver allegro_driver = {
.probe = allegro_probe,
.remove = allegro_remove,
.driver = {
.name = "allegro",
.of_match_table = of_match_ptr(allegro_dt_ids),
},
};
module_platform_driver(allegro_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Michael Tretter <kernel@pengutronix.de>");
MODULE_DESCRIPTION("Allegro DVT encoder driver");
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