// SPDX-License-Identifier: GPL-2.0
/*
* V4L2 driver for the JPEG encoder/decoder from i.MX8QXP/i.MX8QM application
* processors.
*
* The multi-planar buffers API is used.
*
* Baseline and extended sequential jpeg decoding is supported.
* Progressive jpeg decoding is not supported by the IP.
* Supports encode and decode of various formats:
* YUV444, YUV422, YUV420, BGR, ABGR, Gray
* YUV420 is the only multi-planar format supported.
* Minimum resolution is 64 x 64, maximum 8192 x 8192.
* To achieve 8192 x 8192, modify in defconfig: CONFIG_CMA_SIZE_MBYTES=320
* The alignment requirements for the resolution depend on the format,
* multiple of 16 resolutions should work for all formats.
* Special workarounds are made in the driver to support NV12 1080p.
* When decoding, the driver detects image resolution and pixel format
* from the jpeg stream, by parsing the jpeg markers.
*
* The IP has 4 slots available for context switching, but only slot 0
* was fully tested to work. Context switching is not used by the driver.
* Each driver instance (context) allocates a slot for itself, but this
* is postponed until device_run, to allow unlimited opens.
*
* The driver submits jobs to the IP by setting up a descriptor for the
* used slot, and then validating it. The encoder has an additional descriptor
* for the configuration phase. The driver expects FRM_DONE interrupt from
* IP to mark the job as finished.
*
* The decoder IP has some limitations regarding the component ID's,
* but the driver works around this by replacing them in the jpeg stream.
*
* A module parameter is available for debug purpose (jpeg_tracing), to enable
* it, enable dynamic debug for this module and:
* echo 1 > /sys/module/mxc_jpeg_encdec/parameters/jpeg_tracing
*
* This is inspired by the drivers/media/platform/samsung/s5p-jpeg driver
*
* Copyright 2018-2019 NXP
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/irqreturn.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/pm_domain.h>
#include <linux/string.h>
#include <media/v4l2-jpeg.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-common.h>
#include <media/v4l2-event.h>
#include <media/videobuf2-dma-contig.h>
#include "mxc-jpeg-hw.h"
#include "mxc-jpeg.h"
static const struct mxc_jpeg_fmt mxc_formats[] = {
{
.name = "JPEG",
.fourcc = V4L2_PIX_FMT_JPEG,
.subsampling = -1,
.nc = -1,
.mem_planes = 1,
.comp_planes = 1,
.flags = MXC_JPEG_FMT_TYPE_ENC,
},
{
.name = "BGR", /*BGR packed format*/
.fourcc = V4L2_PIX_FMT_BGR24,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
.nc = 3,
.depth = 24,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
.is_rgb = 1,
},
{
.name = "BGR 12bit", /*12-bit BGR packed format*/
.fourcc = V4L2_PIX_FMT_BGR48_12,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
.nc = 3,
.depth = 36,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 12,
.is_rgb = 1,
},
{
.name = "ABGR", /* ABGR packed format */
.fourcc = V4L2_PIX_FMT_ABGR32,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
.nc = 4,
.depth = 32,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
.is_rgb = 1,
},
{
.name = "ABGR 12bit", /* 12-bit ABGR packed format */
.fourcc = V4L2_PIX_FMT_ABGR64_12,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
.nc = 4,
.depth = 48,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 12,
.is_rgb = 1,
},
{
.name = "YUV420", /* 1st plane = Y, 2nd plane = UV */
.fourcc = V4L2_PIX_FMT_NV12M,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420,
.nc = 3,
.depth = 12, /* 6 bytes (4Y + UV) for 4 pixels */
.mem_planes = 2,
.comp_planes = 2, /* 1 plane Y, 1 plane UV interleaved */
.h_align = 4,
.v_align = 4,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "YUV420", /* 1st plane = Y, 2nd plane = UV */
.fourcc = V4L2_PIX_FMT_NV12,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420,
.nc = 3,
.depth = 12, /* 6 bytes (4Y + UV) for 4 pixels */
.mem_planes = 1,
.comp_planes = 2, /* 1 plane Y, 1 plane UV interleaved */
.h_align = 4,
.v_align = 4,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "YUV420 12bit", /* 1st plane = Y, 2nd plane = UV */
.fourcc = V4L2_PIX_FMT_P012M,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420,
.nc = 3,
.depth = 18, /* 6 x 12 bits (4Y + UV) for 4 pixels */
.mem_planes = 2,
.comp_planes = 2, /* 1 plane Y, 1 plane UV interleaved */
.h_align = 4,
.v_align = 4,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 12,
},
{
.name = "YUV420 12bit", /* 1st plane = Y, 2nd plane = UV */
.fourcc = V4L2_PIX_FMT_P012,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420,
.nc = 3,
.depth = 18, /* 6 x 12 bits (4Y + UV) for 4 pixels */
.mem_planes = 1,
.comp_planes = 2, /* 1 plane Y, 1 plane UV interleaved */
.h_align = 4,
.v_align = 4,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 12,
},
{
.name = "YUV422", /* YUYV */
.fourcc = V4L2_PIX_FMT_YUYV,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422,
.nc = 3,
.depth = 16,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 4,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "YUV422 12bit", /* YUYV */
.fourcc = V4L2_PIX_FMT_Y212,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422,
.nc = 3,
.depth = 24,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 4,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 12,
},
{
.name = "YUV444", /* YUVYUV */
.fourcc = V4L2_PIX_FMT_YUV24,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
.nc = 3,
.depth = 24,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "YUV444 12bit", /* YUVYUV */
.fourcc = V4L2_PIX_FMT_YUV48_12,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
.nc = 3,
.depth = 36,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 12,
},
{
.name = "Gray", /* Gray (Y8/Y12) or Single Comp */
.fourcc = V4L2_PIX_FMT_GREY,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY,
.nc = 1,
.depth = 8,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "Gray 12bit", /* Gray (Y8/Y12) or Single Comp */
.fourcc = V4L2_PIX_FMT_Y012,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY,
.nc = 1,
.depth = 12,
.mem_planes = 1,
.comp_planes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 12,
},
};
#define MXC_JPEG_NUM_FORMATS ARRAY_SIZE(mxc_formats)
static const int mxc_decode_mode = MXC_JPEG_DECODE;
static const int mxc_encode_mode = MXC_JPEG_ENCODE;
static const struct of_device_id mxc_jpeg_match[] = {
{
.compatible = "nxp,imx8qxp-jpgdec",
.data = &mxc_decode_mode,
},
{
.compatible = "nxp,imx8qxp-jpgenc",
.data = &mxc_encode_mode,
},
{ },
};
/*
* default configuration stream, 64x64 yuv422
* split by JPEG marker, so it's easier to modify & use
*/
static const unsigned char jpeg_soi[] = {
0xFF, 0xD8
};
static const unsigned char jpeg_app0[] = {
0xFF, 0xE0,
0x00, 0x10, 0x4A, 0x46, 0x49, 0x46, 0x00,
0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x01,
0x00, 0x00
};
static const unsigned char jpeg_app14[] = {
0xFF, 0xEE,
0x00, 0x0E, 0x41, 0x64, 0x6F, 0x62, 0x65,
0x00, 0x64, 0x00, 0x00, 0x00, 0x00, 0x00
};
static const unsigned char jpeg_dqt[] = {
0xFF, 0xDB,
0x00, 0x84, 0x00, 0x10, 0x0B, 0x0C, 0x0E,
0x0C, 0x0A, 0x10, 0x0E, 0x0D, 0x0E, 0x12,
0x11, 0x10, 0x13, 0x18, 0x28, 0x1A, 0x18,
0x16, 0x16, 0x18, 0x31, 0x23, 0x25, 0x1D,
0x28, 0x3A, 0x33, 0x3D, 0x3C, 0x39, 0x33,
0x38, 0x37, 0x40, 0x48, 0x5C, 0x4E, 0x40,
0x44, 0x57, 0x45, 0x37, 0x38, 0x50, 0x6D,
0x51, 0x57, 0x5F, 0x62, 0x67, 0x68, 0x67,
0x3E, 0x4D, 0x71, 0x79, 0x70, 0x64, 0x78,
0x5C, 0x65, 0x67, 0x63, 0x01, 0x11, 0x12,
0x12, 0x18, 0x15, 0x18, 0x2F, 0x1A, 0x1A,
0x2F, 0x63, 0x42, 0x38, 0x42, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63, 0x63,
0x63, 0x63, 0x63, 0x63, 0x63, 0x63
};
static const unsigned char jpeg_dqt_extseq[] = {
0xFF, 0xDB,
0x01, 0x04,
0x10,
0x00, 0x80, 0x00, 0x58, 0x00, 0x60, 0x00, 0x70,
0x00, 0x60, 0x00, 0x50, 0x00, 0x80, 0x00, 0x70,
0x00, 0x68, 0x00, 0x70, 0x00, 0x90, 0x00, 0x88,
0x00, 0x80, 0x00, 0x98, 0x00, 0xC0, 0x01, 0x40,
0x00, 0xD0, 0x00, 0xC0, 0x00, 0xB0, 0x00, 0xB0,
0x00, 0xC0, 0x01, 0x88, 0x01, 0x18, 0x01, 0x28,
0x00, 0xE8, 0x01, 0x40, 0x01, 0xD0, 0x01, 0x98,
0x01, 0xE8, 0x01, 0xE0, 0x01, 0xC8, 0x01, 0x98,
0x01, 0xC0, 0x01, 0xB8, 0x02, 0x00, 0x02, 0x40,
0x02, 0xE0, 0x02, 0x70, 0x02, 0x00, 0x02, 0x20,
0x02, 0xB8, 0x02, 0x28, 0x01, 0xB8, 0x01, 0xC0,
0x02, 0x80, 0x03, 0x68, 0x02, 0x88, 0x02, 0xB8,
0x02, 0xF8, 0x03, 0x10, 0x03, 0x38, 0x03, 0x40,
0x03, 0x38, 0x01, 0xF0, 0x02, 0x68, 0x03, 0x88,
0x03, 0xC8, 0x03, 0x80, 0x03, 0x20, 0x03, 0xC0,
0x02, 0xE0, 0x03, 0x28, 0x03, 0x38, 0x03, 0x18,
0x11,
0x00, 0x88, 0x00, 0x90, 0x00, 0x90, 0x00, 0xC0,
0x00, 0xA8, 0x00, 0xC0, 0x01, 0x78, 0x00, 0xD0,
0x00, 0xD0, 0x01, 0x78, 0x03, 0x18, 0x02, 0x10,
0x01, 0xC0, 0x02, 0x10, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
0x03, 0x18, 0x03, 0x18, 0x03, 0x18, 0x03, 0x18,
};
static const unsigned char jpeg_sof_maximal[] = {
0xFF, 0xC0,
0x00, 0x14, 0x08, 0x00, 0x40, 0x00, 0x40,
0x04, 0x01, 0x11, 0x00, 0x02, 0x11, 0x01,
0x03, 0x11, 0x01, 0x04, 0x11, 0x01
};
static const unsigned char jpeg_sof_extseq[] = {
0xFF, 0xC1,
0x00, 0x14, 0x08, 0x00, 0x40, 0x00, 0x40,
0x04, 0x01, 0x11, 0x00, 0x02, 0x11, 0x01,
0x03, 0x11, 0x01, 0x04, 0x11, 0x01
};
static const unsigned char jpeg_dht[] = {
0xFF, 0xC4,
0x01, 0xA2, 0x00, 0x00, 0x01, 0x05, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0A, 0x0B, 0x10, 0x00, 0x02, 0x01,
0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05,
0x04, 0x04, 0x00, 0x00, 0x01, 0x7D, 0x01,
0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91,
0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, 0x15,
0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72,
0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, 0x19,
0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A,
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A,
0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, 0x76,
0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85,
0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6,
0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, 0xF3,
0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA,
0x01, 0x00, 0x03, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x03,
0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A,
0x0B, 0x11, 0x00, 0x02, 0x01, 0x02, 0x04,
0x04, 0x03, 0x04, 0x07, 0x05, 0x04, 0x04,
0x00, 0x01, 0x02, 0x77, 0x00, 0x01, 0x02,
0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06,
0x12, 0x41, 0x51, 0x07, 0x61, 0x71, 0x13,
0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91,
0xA1, 0xB1, 0xC1, 0x09, 0x23, 0x33, 0x52,
0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16,
0x24, 0x34, 0xE1, 0x25, 0xF1, 0x17, 0x18,
0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A,
0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x43,
0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A,
0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59,
0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68,
0x69, 0x6A, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85,
0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, 0x93,
0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A,
0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, 0xA8,
0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6,
0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, 0xC4,
0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2,
0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, 0xD9,
0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7,
0xE8, 0xE9, 0xEA, 0xF2, 0xF3, 0xF4, 0xF5,
0xF6, 0xF7, 0xF8, 0xF9, 0xFA
};
static const unsigned char jpeg_dht_extseq[] = {
0xFF, 0xC4,
0x02, 0x2a, 0x00, 0x00, 0x01, 0x05, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x01,
0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x00, 0x02, 0x01, 0x03, 0x03, 0x02,
0x04, 0x03, 0x05, 0x05, 0x02, 0x03, 0x02,
0x00, 0x00, 0xbf, 0x01, 0x02, 0x03, 0x00,
0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41,
0x06, 0x13, 0x51, 0x61, 0x07, 0x22, 0x71,
0x14, 0x32, 0x81, 0x91, 0xa1, 0x08, 0x23,
0x42, 0xb1, 0xc1, 0x15, 0x52, 0xd1, 0xf0,
0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0a,
0x16, 0x17, 0x18, 0x19, 0x1a, 0x25, 0x26,
0x27, 0x28, 0x29, 0x2a, 0x34, 0x35, 0x36,
0x37, 0x38, 0x39, 0x3a, 0x43, 0x44, 0x45,
0x46, 0x47, 0x48, 0x49, 0x4a, 0x53, 0x54,
0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x63,
0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79,
0x7a, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88,
0x89, 0x8a, 0x92, 0x93, 0x94, 0x95, 0x96,
0x97, 0x98, 0x99, 0x9a, 0xa2, 0xa3, 0xa4,
0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xb2,
0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9,
0xba, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
0xc8, 0xc9, 0xca, 0xd2, 0xd3, 0xd4, 0xd5,
0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xe1, 0xe2,
0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9,
0xea, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6,
0xf7, 0xf8, 0xf9, 0xfa, 0x0b, 0x0c, 0x0d,
0x0e, 0x1b, 0x1c, 0x1d, 0x1e, 0x2b, 0x2c,
0x2d, 0x2e, 0x3b, 0x3c, 0x3d, 0x3e, 0x4b,
0x4c, 0x4d, 0x4e, 0x5b, 0x5c, 0x5d, 0x5e,
0x6b, 0x6c, 0x6d, 0x6e, 0x7b, 0x7c, 0x7d,
0x7e, 0x8b, 0x8c, 0x8d, 0x8e, 0x9b, 0x9c,
0x9d, 0x9e, 0xab, 0xac, 0xad, 0xae, 0xbb,
0xbc, 0xbd, 0xbe, 0xcb, 0xcc, 0xcd, 0xce,
0xdb, 0xdc, 0xdd, 0xde, 0xeb, 0xec, 0xed,
0xee, 0xfb, 0xfc, 0xfd, 0xfe, 0x01, 0x00,
0x01, 0x05, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
0x00, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05,
0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c,
0x0d, 0x0e, 0x0f, 0x11, 0x00, 0x02, 0x01,
0x03, 0x03, 0x02, 0x04, 0x03, 0x05, 0x05,
0x02, 0x03, 0x02, 0x00, 0x00, 0xbf, 0x01,
0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12,
0x21, 0x31, 0x41, 0x06, 0x13, 0x51, 0x61,
0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91,
0xa1, 0x08, 0x23, 0x42, 0xb1, 0xc1, 0x15,
0x52, 0xd1, 0xf0, 0x24, 0x33, 0x62, 0x72,
0x82, 0x09, 0x0a, 0x16, 0x17, 0x18, 0x19,
0x1a, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a,
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a,
0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49,
0x4a, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58,
0x59, 0x5a, 0x63, 0x64, 0x65, 0x66, 0x67,
0x68, 0x69, 0x6a, 0x73, 0x74, 0x75, 0x76,
0x77, 0x78, 0x79, 0x7a, 0x83, 0x84, 0x85,
0x86, 0x87, 0x88, 0x89, 0x8a, 0x92, 0x93,
0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a,
0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8,
0xa9, 0xaa, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6,
0xb7, 0xb8, 0xb9, 0xba, 0xc2, 0xc3, 0xc4,
0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xd2,
0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9,
0xda, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6,
0xe7, 0xe8, 0xe9, 0xea, 0xf1, 0xf2, 0xf3,
0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa,
0x0b, 0x0c, 0x0d, 0x0e, 0x1b, 0x1c, 0x1d,
0x1e, 0x2b, 0x2c, 0x2d, 0x2e, 0x3b, 0x3c,
0x3d, 0x3e, 0x4b, 0x4c, 0x4d, 0x4e, 0x5b,
0x5c, 0x5d, 0x5e, 0x6b, 0x6c, 0x6d, 0x6e,
0x7b, 0x7c, 0x7d, 0x7e, 0x8b, 0x8c, 0x8d,
0x8e, 0x9b, 0x9c, 0x9d, 0x9e, 0xab, 0xac,
0xad, 0xae, 0xbb, 0xbc, 0xbd, 0xbe, 0xcb,
0xcc, 0xcd, 0xce, 0xdb, 0xdc, 0xdd, 0xde,
0xeb, 0xec, 0xed, 0xee, 0xfb, 0xfc, 0xfd,
0xfe,
};
static const unsigned char jpeg_dri[] = {
0xFF, 0xDD,
0x00, 0x04, 0x00, 0x20
};
static const unsigned char jpeg_sos_maximal[] = {
0xFF, 0xDA,
0x00, 0x0C, 0x04, 0x01, 0x00, 0x02, 0x11, 0x03,
0x11, 0x04, 0x11, 0x00, 0x3F, 0x00
};
static const unsigned char jpeg_image_red[] = {
0xFC, 0x5F, 0xA2, 0xBF, 0xCA, 0x73, 0xFE, 0xFE,
0x02, 0x8A, 0x00, 0x28, 0xA0, 0x02, 0x8A, 0x00,
0x28, 0xA0, 0x02, 0x8A, 0x00, 0x28, 0xA0, 0x02,
0x8A, 0x00, 0x28, 0xA0, 0x02, 0x8A, 0x00, 0x28,
0xA0, 0x02, 0x8A, 0x00, 0x28, 0xA0, 0x02, 0x8A,
0x00, 0x28, 0xA0, 0x02, 0x8A, 0x00, 0x28, 0xA0,
0x02, 0x8A, 0x00, 0x28, 0xA0, 0x02, 0x8A, 0x00,
0x28, 0xA0, 0x02, 0x8A, 0x00, 0x28, 0xA0, 0x02,
0x8A, 0x00, 0x28, 0xA0, 0x02, 0x8A, 0x00, 0x28,
0xA0, 0x02, 0x8A, 0x00, 0x28, 0xA0, 0x02, 0x8A,
0x00, 0x28, 0xA0, 0x02, 0x8A, 0x00
};
static const unsigned char jpeg_eoi[] = {
0xFF, 0xD9
};
struct mxc_jpeg_src_buf {
/* common v4l buffer stuff -- must be first */
struct vb2_v4l2_buffer b;
struct list_head list;
/* mxc-jpeg specific */
bool dht_needed;
bool jpeg_parse_error;
const struct mxc_jpeg_fmt *fmt;
int w;
int h;
};
static inline struct mxc_jpeg_src_buf *vb2_to_mxc_buf(struct vb2_buffer *vb)
{
return container_of(to_vb2_v4l2_buffer(vb),
struct mxc_jpeg_src_buf, b);
}
static unsigned int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-3)");
static unsigned int hw_timeout = 2000;
module_param(hw_timeout, int, 0644);
MODULE_PARM_DESC(hw_timeout, "MXC JPEG hw timeout, the number of milliseconds");
static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q, u32 precision);
static void mxc_jpeg_sizeimage(struct mxc_jpeg_q_data *q);
static void _bswap16(u16 *a)
{
*a = ((*a & 0x00FF) << 8) | ((*a & 0xFF00) >> 8);
}
static void print_mxc_buf(struct mxc_jpeg_dev *jpeg, struct vb2_buffer *buf,
unsigned long len)
{
unsigned int plane_no;
u32 dma_addr;
void *vaddr;
unsigned long payload;
if (debug < 3)
return;
for (plane_no = 0; plane_no < buf->num_planes; plane_no++) {
payload = vb2_get_plane_payload(buf, plane_no);
if (len == 0)
len = payload;
dma_addr = vb2_dma_contig_plane_dma_addr(buf, plane_no);
vaddr = vb2_plane_vaddr(buf, plane_no);
v4l2_dbg(3, debug, &jpeg->v4l2_dev,
"plane %d (vaddr=%p dma_addr=%x payload=%ld):",
plane_no, vaddr, dma_addr, payload);
print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
vaddr, len, false);
}
}
static inline struct mxc_jpeg_ctx *mxc_jpeg_fh_to_ctx(struct v4l2_fh *fh)
{
return container_of(fh, struct mxc_jpeg_ctx, fh);
}
static int enum_fmt(const struct mxc_jpeg_fmt *mxc_formats, int n,
struct v4l2_fmtdesc *f, u32 type)
{
int i, num = 0;
for (i = 0; i < n; ++i) {
if (mxc_formats[i].flags == type) {
/* index-th format of searched type found ? */
if (num == f->index)
break;
/* Correct type but haven't reached our index yet,
* just increment per-type index
*/
++num;
}
}
/* Format not found */
if (i >= n)
return -EINVAL;
f->pixelformat = mxc_formats[i].fourcc;
return 0;
}
static const struct mxc_jpeg_fmt *mxc_jpeg_find_format(u32 pixelformat)
{
unsigned int k;
for (k = 0; k < MXC_JPEG_NUM_FORMATS; k++) {
const struct mxc_jpeg_fmt *fmt = &mxc_formats[k];
if (fmt->fourcc == pixelformat)
return fmt;
}
return NULL;
}
static enum mxc_jpeg_image_format mxc_jpeg_fourcc_to_imgfmt(u32 fourcc)
{
switch (fourcc) {
case V4L2_PIX_FMT_GREY:
case V4L2_PIX_FMT_Y012:
return MXC_JPEG_GRAY;
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_Y212:
return MXC_JPEG_YUV422;
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV12M:
case V4L2_PIX_FMT_P012:
case V4L2_PIX_FMT_P012M:
return MXC_JPEG_YUV420;
case V4L2_PIX_FMT_YUV24:
case V4L2_PIX_FMT_YUV48_12:
return MXC_JPEG_YUV444;
case V4L2_PIX_FMT_BGR24:
case V4L2_PIX_FMT_BGR48_12:
return MXC_JPEG_BGR;
case V4L2_PIX_FMT_ABGR32:
case V4L2_PIX_FMT_ABGR64_12:
return MXC_JPEG_ABGR;
default:
return MXC_JPEG_INVALID;
}
}
static struct mxc_jpeg_q_data *mxc_jpeg_get_q_data(struct mxc_jpeg_ctx *ctx,
enum v4l2_buf_type type)
{
if (V4L2_TYPE_IS_OUTPUT(type))
return &ctx->out_q;
return &ctx->cap_q;
}
static void mxc_jpeg_addrs(struct mxc_jpeg_desc *desc,
struct vb2_buffer *raw_buf,
struct vb2_buffer *jpeg_buf, int offset)
{
int img_fmt = desc->stm_ctrl & STM_CTRL_IMAGE_FORMAT_MASK;
struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(raw_buf->vb2_queue);
struct mxc_jpeg_q_data *q_data;
q_data = mxc_jpeg_get_q_data(ctx, raw_buf->type);
desc->buf_base0 = vb2_dma_contig_plane_dma_addr(raw_buf, 0);
desc->buf_base1 = 0;
if (img_fmt == STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV420)) {
if (raw_buf->num_planes == 2)
desc->buf_base1 = vb2_dma_contig_plane_dma_addr(raw_buf, 1);
else
desc->buf_base1 = desc->buf_base0 + q_data->sizeimage[0];
}
desc->stm_bufbase = vb2_dma_contig_plane_dma_addr(jpeg_buf, 0) +
offset;
}
static bool mxc_jpeg_is_extended_sequential(const struct mxc_jpeg_fmt *fmt)
{
if (!fmt || !(fmt->flags & MXC_JPEG_FMT_TYPE_RAW))
return false;
if (fmt->precision > 8)
return true;
return false;
}
static void notify_eos(struct mxc_jpeg_ctx *ctx)
{
const struct v4l2_event ev = {
.type = V4L2_EVENT_EOS
};
dev_dbg(ctx->mxc_jpeg->dev, "Notify app event EOS reached");
v4l2_event_queue_fh(&ctx->fh, &ev);
}
static void notify_src_chg(struct mxc_jpeg_ctx *ctx)
{
const struct v4l2_event ev = {
.type = V4L2_EVENT_SOURCE_CHANGE,
.u.src_change.changes = V4L2_EVENT_SRC_CH_RESOLUTION,
};
dev_dbg(ctx->mxc_jpeg->dev, "Notify app event SRC_CH_RESOLUTION");
v4l2_event_queue_fh(&ctx->fh, &ev);
}
static int mxc_get_free_slot(struct mxc_jpeg_slot_data *slot_data)
{
if (!slot_data->used)
return slot_data->slot;
return -1;
}
static bool mxc_jpeg_alloc_slot_data(struct mxc_jpeg_dev *jpeg)
{
struct mxc_jpeg_desc *desc;
struct mxc_jpeg_desc *cfg_desc;
void *cfg_stm;
if (jpeg->slot_data.desc)
goto skip_alloc; /* already allocated, reuse it */
/* allocate descriptor for decoding/encoding phase */
desc = dma_alloc_coherent(jpeg->dev,
sizeof(struct mxc_jpeg_desc),
&jpeg->slot_data.desc_handle,
GFP_ATOMIC);
if (!desc)
goto err;
jpeg->slot_data.desc = desc;
/* allocate descriptor for configuration phase (encoder only) */
cfg_desc = dma_alloc_coherent(jpeg->dev,
sizeof(struct mxc_jpeg_desc),
&jpeg->slot_data.cfg_desc_handle,
GFP_ATOMIC);
if (!cfg_desc)
goto err;
jpeg->slot_data.cfg_desc = cfg_desc;
/* allocate configuration stream */
cfg_stm = dma_alloc_coherent(jpeg->dev,
MXC_JPEG_MAX_CFG_STREAM,
&jpeg->slot_data.cfg_stream_handle,
GFP_ATOMIC);
if (!cfg_stm)
goto err;
jpeg->slot_data.cfg_stream_vaddr = cfg_stm;
skip_alloc:
jpeg->slot_data.used = true;
return true;
err:
dev_err(jpeg->dev, "Could not allocate descriptors for slot %d", jpeg->slot_data.slot);
return false;
}
static void mxc_jpeg_free_slot_data(struct mxc_jpeg_dev *jpeg)
{
/* free descriptor for decoding/encoding phase */
dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
jpeg->slot_data.desc,
jpeg->slot_data.desc_handle);
/* free descriptor for encoder configuration phase / decoder DHT */
dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
jpeg->slot_data.cfg_desc,
jpeg->slot_data.cfg_desc_handle);
/* free configuration stream */
dma_free_coherent(jpeg->dev, MXC_JPEG_MAX_CFG_STREAM,
jpeg->slot_data.cfg_stream_vaddr,
jpeg->slot_data.cfg_stream_handle);
jpeg->slot_data.used = false;
}
static void mxc_jpeg_check_and_set_last_buffer(struct mxc_jpeg_ctx *ctx,
struct vb2_v4l2_buffer *src_buf,
struct vb2_v4l2_buffer *dst_buf)
{
if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, src_buf)) {
dst_buf->flags |= V4L2_BUF_FLAG_LAST;
v4l2_m2m_mark_stopped(ctx->fh.m2m_ctx);
notify_eos(ctx);
ctx->header_parsed = false;
}
}
static void mxc_jpeg_job_finish(struct mxc_jpeg_ctx *ctx, enum vb2_buffer_state state, bool reset)
{
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
void __iomem *reg = jpeg->base_reg;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
mxc_jpeg_check_and_set_last_buffer(ctx, src_buf, dst_buf);
v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_buf_done(src_buf, state);
v4l2_m2m_buf_done(dst_buf, state);
mxc_jpeg_disable_irq(reg, ctx->slot);
jpeg->slot_data.used = false;
if (reset)
mxc_jpeg_sw_reset(reg);
}
static u32 mxc_jpeg_get_plane_size(struct mxc_jpeg_q_data *q_data, u32 plane_no)
{
const struct mxc_jpeg_fmt *fmt = q_data->fmt;
u32 size;
int i;
if (plane_no >= fmt->mem_planes)
return 0;
if (fmt->mem_planes == fmt->comp_planes)
return q_data->sizeimage[plane_no];
if (plane_no < fmt->mem_planes - 1)
return q_data->sizeimage[plane_no];
size = q_data->sizeimage[fmt->mem_planes - 1];
/* Should be impossible given mxc_formats. */
if (WARN_ON_ONCE(fmt->comp_planes > ARRAY_SIZE(q_data->sizeimage)))
return size;
for (i = fmt->mem_planes; i < fmt->comp_planes; i++)
size += q_data->sizeimage[i];
return size;
}
static irqreturn_t mxc_jpeg_dec_irq(int irq, void *priv)
{
struct mxc_jpeg_dev *jpeg = priv;
struct mxc_jpeg_ctx *ctx;
void __iomem *reg = jpeg->base_reg;
struct device *dev = jpeg->dev;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
struct mxc_jpeg_src_buf *jpeg_src_buf;
enum vb2_buffer_state buf_state;
u32 dec_ret, com_status;
unsigned long payload;
struct mxc_jpeg_q_data *q_data;
enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
unsigned int slot;
spin_lock(&jpeg->hw_lock);
com_status = readl(reg + COM_STATUS);
slot = COM_STATUS_CUR_SLOT(com_status);
dev_dbg(dev, "Irq %d on slot %d.\n", irq, slot);
ctx = v4l2_m2m_get_curr_priv(jpeg->m2m_dev);
if (WARN_ON(!ctx))
goto job_unlock;
if (slot != ctx->slot) {
/* TODO investigate when adding multi-instance support */
dev_warn(dev, "IRQ slot %d != context slot %d.\n",
slot, ctx->slot);
goto job_unlock;
}
if (!jpeg->slot_data.used)
goto job_unlock;
dec_ret = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS));
writel(dec_ret, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS)); /* w1c */
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
if (!dst_buf || !src_buf) {
dev_err(dev, "No source or destination buffer.\n");
goto job_unlock;
}
jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
if (dec_ret & SLOT_STATUS_ENC_CONFIG_ERR) {
u32 ret = readl(reg + CAST_STATUS12);
dev_err(dev, "Encoder/decoder error, dec_ret = 0x%08x, status=0x%08x",
dec_ret, ret);
mxc_jpeg_clr_desc(reg, slot);
mxc_jpeg_sw_reset(reg);
buf_state = VB2_BUF_STATE_ERROR;
goto buffers_done;
}
if (!(dec_ret & SLOT_STATUS_FRMDONE))
goto job_unlock;
if (jpeg->mode == MXC_JPEG_ENCODE &&
ctx->enc_state == MXC_JPEG_ENC_CONF) {
q_data = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
ctx->enc_state = MXC_JPEG_ENCODING;
dev_dbg(dev, "Encoder config finished. Start encoding...\n");
mxc_jpeg_enc_set_quality(dev, reg, ctx->jpeg_quality);
mxc_jpeg_enc_mode_go(dev, reg, mxc_jpeg_is_extended_sequential(q_data->fmt));
goto job_unlock;
}
if (jpeg->mode == MXC_JPEG_DECODE && jpeg_src_buf->dht_needed) {
jpeg_src_buf->dht_needed = false;
dev_dbg(dev, "Decoder DHT cfg finished. Start decoding...\n");
goto job_unlock;
}
if (jpeg->mode == MXC_JPEG_ENCODE) {
payload = readl(reg + MXC_SLOT_OFFSET(slot, SLOT_BUF_PTR));
vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
dev_dbg(dev, "Encoding finished, payload size: %ld\n",
payload);
} else {
q_data = mxc_jpeg_get_q_data(ctx, cap_type);
payload = mxc_jpeg_get_plane_size(q_data, 0);
vb2_set_plane_payload(&dst_buf->vb2_buf, 0, payload);
vb2_set_plane_payload(&dst_buf->vb2_buf, 1, 0);
if (q_data->fmt->mem_planes == 2) {
payload = mxc_jpeg_get_plane_size(q_data, 1);
vb2_set_plane_payload(&dst_buf->vb2_buf, 1, payload);
}
dev_dbg(dev, "Decoding finished, payload size: %ld + %ld\n",
vb2_get_plane_payload(&dst_buf->vb2_buf, 0),
vb2_get_plane_payload(&dst_buf->vb2_buf, 1));
}
/* short preview of the results */
dev_dbg(dev, "src_buf preview: ");
print_mxc_buf(jpeg, &src_buf->vb2_buf, 32);
dev_dbg(dev, "dst_buf preview: ");
print_mxc_buf(jpeg, &dst_buf->vb2_buf, 32);
buf_state = VB2_BUF_STATE_DONE;
buffers_done:
mxc_jpeg_job_finish(ctx, buf_state, false);
spin_unlock(&jpeg->hw_lock);
cancel_delayed_work(&ctx->task_timer);
v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
return IRQ_HANDLED;
job_unlock:
spin_unlock(&jpeg->hw_lock);
return IRQ_HANDLED;
}
static int mxc_jpeg_fixup_sof(struct mxc_jpeg_sof *sof,
u32 fourcc,
u16 w, u16 h)
{
int sof_length;
const struct mxc_jpeg_fmt *fmt = mxc_jpeg_find_format(fourcc);
if (fmt)
sof->precision = fmt->precision;
else
sof->precision = 8; /* TODO allow 8/12 bit precision*/
sof->height = h;
_bswap16(&sof->height);
sof->width = w;
_bswap16(&sof->width);
switch (fourcc) {
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV12M:
case V4L2_PIX_FMT_P012:
case V4L2_PIX_FMT_P012M:
sof->components_no = 3;
sof->comp[0].v = 0x2;
sof->comp[0].h = 0x2;
break;
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_Y212:
sof->components_no = 3;
sof->comp[0].v = 0x1;
sof->comp[0].h = 0x2;
break;
case V4L2_PIX_FMT_YUV24:
case V4L2_PIX_FMT_YUV48_12:
case V4L2_PIX_FMT_BGR24:
case V4L2_PIX_FMT_BGR48_12:
default:
sof->components_no = 3;
break;
case V4L2_PIX_FMT_ABGR32:
case V4L2_PIX_FMT_ABGR64_12:
sof->components_no = 4;
break;
case V4L2_PIX_FMT_GREY:
case V4L2_PIX_FMT_Y012:
sof->components_no = 1;
break;
}
sof_length = 8 + 3 * sof->components_no;
sof->length = sof_length;
_bswap16(&sof->length);
return sof_length; /* not swaped */
}
static int mxc_jpeg_fixup_sos(struct mxc_jpeg_sos *sos,
u32 fourcc)
{
int sos_length;
u8 *sof_u8 = (u8 *)sos;
switch (fourcc) {
case V4L2_PIX_FMT_NV12:
case V4L2_PIX_FMT_NV12M:
case V4L2_PIX_FMT_P012:
case V4L2_PIX_FMT_P012M:
sos->components_no = 3;
break;
case V4L2_PIX_FMT_YUYV:
case V4L2_PIX_FMT_Y212:
sos->components_no = 3;
break;
case V4L2_PIX_FMT_YUV24:
case V4L2_PIX_FMT_YUV48_12:
case V4L2_PIX_FMT_BGR24:
case V4L2_PIX_FMT_BGR48_12:
default:
sos->components_no = 3;
break;
case V4L2_PIX_FMT_ABGR32:
case V4L2_PIX_FMT_ABGR64_12:
sos->components_no = 4;
break;
case V4L2_PIX_FMT_GREY:
case V4L2_PIX_FMT_Y012:
sos->components_no = 1;
break;
}
sos_length = 6 + 2 * sos->components_no;
sos->length = sos_length;
_bswap16(&sos->length);
/* SOS ignorable bytes, not so ignorable after all */
sof_u8[sos_length - 1] = 0x0;
sof_u8[sos_length - 2] = 0x3f;
sof_u8[sos_length - 3] = 0x0;
return sos_length; /* not swaped */
}
static unsigned int mxc_jpeg_setup_cfg_stream(void *cfg_stream_vaddr,
u32 fourcc,
u16 w, u16 h)
{
/*
* There is a hardware issue that first 128 bytes of configuration data
* can't be loaded correctly.
* To avoid this issue, we need to write the configuration from
* an offset which should be no less than 0x80 (128 bytes).
*/
unsigned int offset = 0x80;
u8 *cfg = (u8 *)cfg_stream_vaddr;
struct mxc_jpeg_sof *sof;
struct mxc_jpeg_sos *sos;
const struct mxc_jpeg_fmt *fmt = mxc_jpeg_find_format(fourcc);
if (!fmt)
return 0;
memcpy(cfg + offset, jpeg_soi, ARRAY_SIZE(jpeg_soi));
offset += ARRAY_SIZE(jpeg_soi);
if (fmt->is_rgb) {
memcpy(cfg + offset, jpeg_app14, sizeof(jpeg_app14));
offset += sizeof(jpeg_app14);
} else {
memcpy(cfg + offset, jpeg_app0, sizeof(jpeg_app0));
offset += sizeof(jpeg_app0);
}
if (mxc_jpeg_is_extended_sequential(fmt)) {
memcpy(cfg + offset, jpeg_dqt_extseq, sizeof(jpeg_dqt_extseq));
offset += sizeof(jpeg_dqt_extseq);
memcpy(cfg + offset, jpeg_sof_extseq, sizeof(jpeg_sof_extseq));
} else {
memcpy(cfg + offset, jpeg_dqt, sizeof(jpeg_dqt));
offset += sizeof(jpeg_dqt);
memcpy(cfg + offset, jpeg_sof_maximal, sizeof(jpeg_sof_maximal));
}
offset += 2; /* skip marker ID */
sof = (struct mxc_jpeg_sof *)(cfg + offset);
offset += mxc_jpeg_fixup_sof(sof, fourcc, w, h);
if (mxc_jpeg_is_extended_sequential(fmt)) {
memcpy(cfg + offset, jpeg_dht_extseq, sizeof(jpeg_dht_extseq));
offset += sizeof(jpeg_dht_extseq);
} else {
memcpy(cfg + offset, jpeg_dht, sizeof(jpeg_dht));
offset += sizeof(jpeg_dht);
}
memcpy(cfg + offset, jpeg_dri, sizeof(jpeg_dri));
offset += sizeof(jpeg_dri);
memcpy(cfg + offset, jpeg_sos_maximal, sizeof(jpeg_sos_maximal));
offset += 2; /* skip marker ID */
sos = (struct mxc_jpeg_sos *)(cfg + offset);
offset += mxc_jpeg_fixup_sos(sos, fourcc);
memcpy(cfg + offset, jpeg_image_red, sizeof(jpeg_image_red));
offset += sizeof(jpeg_image_red);
memcpy(cfg + offset, jpeg_eoi, sizeof(jpeg_eoi));
offset += sizeof(jpeg_eoi);
return offset;
}
static void mxc_jpeg_config_dec_desc(struct vb2_buffer *out_buf,
struct mxc_jpeg_ctx *ctx,
struct vb2_buffer *src_buf,
struct vb2_buffer *dst_buf)
{
enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
struct mxc_jpeg_q_data *q_data_cap;
enum mxc_jpeg_image_format img_fmt;
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
void __iomem *reg = jpeg->base_reg;
unsigned int slot = ctx->slot;
struct mxc_jpeg_desc *desc = jpeg->slot_data.desc;
struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data.cfg_desc;
dma_addr_t desc_handle = jpeg->slot_data.desc_handle;
dma_addr_t cfg_desc_handle = jpeg->slot_data.cfg_desc_handle;
dma_addr_t cfg_stream_handle = jpeg->slot_data.cfg_stream_handle;
unsigned int *cfg_size = &jpeg->slot_data.cfg_stream_size;
void *cfg_stream_vaddr = jpeg->slot_data.cfg_stream_vaddr;
struct mxc_jpeg_src_buf *jpeg_src_buf;
jpeg_src_buf = vb2_to_mxc_buf(src_buf);
/* setup the decoding descriptor */
desc->next_descpt_ptr = 0; /* end of chain */
q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
desc->imgsize = q_data_cap->w_adjusted << 16 | q_data_cap->h_adjusted;
img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data_cap->fmt->fourcc);
desc->stm_ctrl &= ~STM_CTRL_IMAGE_FORMAT(0xF); /* clear image format */
desc->stm_ctrl |= STM_CTRL_IMAGE_FORMAT(img_fmt);
desc->stm_ctrl |= STM_CTRL_BITBUF_PTR_CLR(1);
if (mxc_jpeg_is_extended_sequential(jpeg_src_buf->fmt))
desc->stm_ctrl |= STM_CTRL_PIXEL_PRECISION;
else
desc->stm_ctrl &= ~STM_CTRL_PIXEL_PRECISION;
desc->line_pitch = q_data_cap->bytesperline[0];
mxc_jpeg_addrs(desc, dst_buf, src_buf, 0);
mxc_jpeg_set_bufsize(desc, ALIGN(vb2_plane_size(src_buf, 0), 1024));
print_descriptor_info(jpeg->dev, desc);
if (!jpeg_src_buf->dht_needed) {
/* validate the decoding descriptor */
mxc_jpeg_set_desc(desc_handle, reg, slot);
return;
}
/*
* if a default huffman table is needed, use the config descriptor to
* inject a DHT, by chaining it before the decoding descriptor
*/
*cfg_size = mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
V4L2_PIX_FMT_YUYV,
MXC_JPEG_MIN_WIDTH,
MXC_JPEG_MIN_HEIGHT);
cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
cfg_desc->buf_base0 = vb2_dma_contig_plane_dma_addr(dst_buf, 0);
cfg_desc->buf_base1 = 0;
cfg_desc->imgsize = MXC_JPEG_MIN_WIDTH << 16;
cfg_desc->imgsize |= MXC_JPEG_MIN_HEIGHT;
cfg_desc->line_pitch = MXC_JPEG_MIN_WIDTH * 2;
cfg_desc->stm_ctrl = STM_CTRL_IMAGE_FORMAT(MXC_JPEG_YUV422);
cfg_desc->stm_ctrl |= STM_CTRL_BITBUF_PTR_CLR(1);
cfg_desc->stm_bufbase = cfg_stream_handle;
cfg_desc->stm_bufsize = ALIGN(*cfg_size, 1024);
print_descriptor_info(jpeg->dev, cfg_desc);
/* validate the configuration descriptor */
mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
}
static void mxc_jpeg_config_enc_desc(struct vb2_buffer *out_buf,
struct mxc_jpeg_ctx *ctx,
struct vb2_buffer *src_buf,
struct vb2_buffer *dst_buf)
{
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
void __iomem *reg = jpeg->base_reg;
unsigned int slot = ctx->slot;
struct mxc_jpeg_desc *desc = jpeg->slot_data.desc;
struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data.cfg_desc;
dma_addr_t desc_handle = jpeg->slot_data.desc_handle;
dma_addr_t cfg_desc_handle = jpeg->slot_data.cfg_desc_handle;
void *cfg_stream_vaddr = jpeg->slot_data.cfg_stream_vaddr;
struct mxc_jpeg_q_data *q_data;
enum mxc_jpeg_image_format img_fmt;
int w, h;
q_data = mxc_jpeg_get_q_data(ctx, src_buf->vb2_queue->type);
jpeg->slot_data.cfg_stream_size =
mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
q_data->fmt->fourcc,
q_data->crop.width,
q_data->crop.height);
/* chain the config descriptor with the encoding descriptor */
cfg_desc->next_descpt_ptr = desc_handle | MXC_NXT_DESCPT_EN;
cfg_desc->buf_base0 = jpeg->slot_data.cfg_stream_handle;
cfg_desc->buf_base1 = 0;
cfg_desc->line_pitch = 0;
cfg_desc->stm_bufbase = 0; /* no output expected */
cfg_desc->stm_bufsize = 0x0;
cfg_desc->imgsize = 0;
cfg_desc->stm_ctrl = STM_CTRL_CONFIG_MOD(1);
cfg_desc->stm_ctrl |= STM_CTRL_BITBUF_PTR_CLR(1);
desc->next_descpt_ptr = 0; /* end of chain */
/* use adjusted resolution for CAST IP job */
w = q_data->crop.width;
h = q_data->crop.height;
v4l_bound_align_image(&w, w, MXC_JPEG_MAX_WIDTH, q_data->fmt->h_align,
&h, h, MXC_JPEG_MAX_HEIGHT, q_data->fmt->v_align, 0);
mxc_jpeg_set_res(desc, w, h);
mxc_jpeg_set_line_pitch(desc, q_data->bytesperline[0]);
mxc_jpeg_set_bufsize(desc, ALIGN(vb2_plane_size(dst_buf, 0), 1024));
img_fmt = mxc_jpeg_fourcc_to_imgfmt(q_data->fmt->fourcc);
if (img_fmt == MXC_JPEG_INVALID)
dev_err(jpeg->dev, "No valid image format detected\n");
desc->stm_ctrl = STM_CTRL_CONFIG_MOD(0) |
STM_CTRL_IMAGE_FORMAT(img_fmt);
desc->stm_ctrl |= STM_CTRL_BITBUF_PTR_CLR(1);
if (mxc_jpeg_is_extended_sequential(q_data->fmt))
desc->stm_ctrl |= STM_CTRL_PIXEL_PRECISION;
else
desc->stm_ctrl &= ~STM_CTRL_PIXEL_PRECISION;
mxc_jpeg_addrs(desc, src_buf, dst_buf, 0);
dev_dbg(jpeg->dev, "cfg_desc:\n");
print_descriptor_info(jpeg->dev, cfg_desc);
dev_dbg(jpeg->dev, "enc desc:\n");
print_descriptor_info(jpeg->dev, desc);
print_wrapper_info(jpeg->dev, reg);
print_cast_status(jpeg->dev, reg, MXC_JPEG_ENCODE);
/* validate the configuration descriptor */
mxc_jpeg_set_desc(cfg_desc_handle, reg, slot);
}
static const struct mxc_jpeg_fmt *mxc_jpeg_get_sibling_format(const struct mxc_jpeg_fmt *fmt)
{
int i;
for (i = 0; i < MXC_JPEG_NUM_FORMATS; i++) {
if (mxc_formats[i].subsampling == fmt->subsampling &&
mxc_formats[i].nc == fmt->nc &&
mxc_formats[i].precision == fmt->precision &&
mxc_formats[i].is_rgb == fmt->is_rgb &&
mxc_formats[i].fourcc != fmt->fourcc)
return &mxc_formats[i];
}
return NULL;
}
static bool mxc_jpeg_compare_format(const struct mxc_jpeg_fmt *fmt1,
const struct mxc_jpeg_fmt *fmt2)
{
if (fmt1 == fmt2)
return true;
if (mxc_jpeg_get_sibling_format(fmt1) == fmt2)
return true;
return false;
}
static void mxc_jpeg_set_last_buffer(struct mxc_jpeg_ctx *ctx)
{
struct vb2_v4l2_buffer *next_dst_buf;
next_dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
if (!next_dst_buf) {
ctx->fh.m2m_ctx->is_draining = true;
ctx->fh.m2m_ctx->next_buf_last = true;
return;
}
v4l2_m2m_last_buffer_done(ctx->fh.m2m_ctx, next_dst_buf);
}
static bool mxc_jpeg_source_change(struct mxc_jpeg_ctx *ctx,
struct mxc_jpeg_src_buf *jpeg_src_buf)
{
struct device *dev = ctx->mxc_jpeg->dev;
struct mxc_jpeg_q_data *q_data_cap;
if (!jpeg_src_buf->fmt)
return false;
q_data_cap = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (mxc_jpeg_compare_format(q_data_cap->fmt, jpeg_src_buf->fmt))
jpeg_src_buf->fmt = q_data_cap->fmt;
if (ctx->need_initial_source_change_evt ||
q_data_cap->fmt != jpeg_src_buf->fmt ||
q_data_cap->w != jpeg_src_buf->w ||
q_data_cap->h != jpeg_src_buf->h) {
dev_dbg(dev, "Detected jpeg res=(%dx%d)->(%dx%d), pixfmt=%c%c%c%c\n",
q_data_cap->w, q_data_cap->h,
jpeg_src_buf->w, jpeg_src_buf->h,
(jpeg_src_buf->fmt->fourcc & 0xff),
(jpeg_src_buf->fmt->fourcc >> 8) & 0xff,
(jpeg_src_buf->fmt->fourcc >> 16) & 0xff,
(jpeg_src_buf->fmt->fourcc >> 24) & 0xff);
/*
* set-up the capture queue with the pixelformat and resolution
* detected from the jpeg output stream
*/
q_data_cap->w = jpeg_src_buf->w;
q_data_cap->h = jpeg_src_buf->h;
q_data_cap->fmt = jpeg_src_buf->fmt;
q_data_cap->w_adjusted = q_data_cap->w;
q_data_cap->h_adjusted = q_data_cap->h;
q_data_cap->crop.left = 0;
q_data_cap->crop.top = 0;
q_data_cap->crop.width = jpeg_src_buf->w;
q_data_cap->crop.height = jpeg_src_buf->h;
q_data_cap->bytesperline[0] = 0;
q_data_cap->bytesperline[1] = 0;
/*
* align up the resolution for CAST IP,
* but leave the buffer resolution unchanged
*/
v4l_bound_align_image(&q_data_cap->w_adjusted,
q_data_cap->w_adjusted, /* adjust up */
MXC_JPEG_MAX_WIDTH,
q_data_cap->fmt->h_align,
&q_data_cap->h_adjusted,
q_data_cap->h_adjusted, /* adjust up */
MXC_JPEG_MAX_HEIGHT,
q_data_cap->fmt->v_align,
0);
/* setup bytesperline/sizeimage for capture queue */
mxc_jpeg_bytesperline(q_data_cap, jpeg_src_buf->fmt->precision);
mxc_jpeg_sizeimage(q_data_cap);
notify_src_chg(ctx);
ctx->source_change = 1;
ctx->need_initial_source_change_evt = false;
if (vb2_is_streaming(v4l2_m2m_get_dst_vq(ctx->fh.m2m_ctx)))
mxc_jpeg_set_last_buffer(ctx);
}
return ctx->source_change ? true : false;
}
static int mxc_jpeg_job_ready(void *priv)
{
struct mxc_jpeg_ctx *ctx = priv;
return ctx->source_change ? 0 : 1;
}
static void mxc_jpeg_device_run_timeout(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct mxc_jpeg_ctx *ctx = container_of(dwork, struct mxc_jpeg_ctx, task_timer);
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
unsigned long flags;
spin_lock_irqsave(&ctx->mxc_jpeg->hw_lock, flags);
if (ctx->mxc_jpeg->slot_data.used) {
dev_warn(jpeg->dev, "%s timeout, cancel it\n",
ctx->mxc_jpeg->mode == MXC_JPEG_DECODE ? "decode" : "encode");
mxc_jpeg_job_finish(ctx, VB2_BUF_STATE_ERROR, true);
v4l2_m2m_job_finish(ctx->mxc_jpeg->m2m_dev, ctx->fh.m2m_ctx);
}
spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
}
static void mxc_jpeg_device_run(void *priv)
{
struct mxc_jpeg_ctx *ctx = priv;
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
void __iomem *reg = jpeg->base_reg;
struct device *dev = jpeg->dev;
struct vb2_v4l2_buffer *src_buf, *dst_buf;
unsigned long flags;
struct mxc_jpeg_q_data *q_data_cap, *q_data_out;
struct mxc_jpeg_src_buf *jpeg_src_buf;
spin_lock_irqsave(&ctx->mxc_jpeg->hw_lock, flags);
src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
if (!src_buf || !dst_buf) {
dev_err(dev, "Null src or dst buf\n");
goto end;
}
q_data_cap = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
if (!q_data_cap)
goto end;
q_data_out = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
if (!q_data_out)
goto end;
src_buf->sequence = q_data_out->sequence++;
dst_buf->sequence = q_data_cap->sequence++;
v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true);
jpeg_src_buf = vb2_to_mxc_buf(&src_buf->vb2_buf);
if (q_data_cap->fmt->mem_planes != dst_buf->vb2_buf.num_planes) {
dev_err(dev, "Capture format %s has %d planes, but capture buffer has %d planes\n",
q_data_cap->fmt->name, q_data_cap->fmt->mem_planes,
dst_buf->vb2_buf.num_planes);
jpeg_src_buf->jpeg_parse_error = true;
}
if (jpeg_src_buf->jpeg_parse_error) {
mxc_jpeg_check_and_set_last_buffer(ctx, src_buf, dst_buf);
v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_ERROR);
v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_ERROR);
spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
return;
}
if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE) {
if (ctx->source_change || mxc_jpeg_source_change(ctx, jpeg_src_buf)) {
spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
v4l2_m2m_job_finish(jpeg->m2m_dev, ctx->fh.m2m_ctx);
return;
}
}
mxc_jpeg_enable(reg);
mxc_jpeg_set_l_endian(reg, 1);
ctx->slot = mxc_get_free_slot(&jpeg->slot_data);
if (ctx->slot < 0) {
dev_err(dev, "No more free slots\n");
goto end;
}
if (!mxc_jpeg_alloc_slot_data(jpeg)) {
dev_err(dev, "Cannot allocate slot data\n");
goto end;
}
mxc_jpeg_enable_slot(reg, ctx->slot);
mxc_jpeg_enable_irq(reg, ctx->slot);
if (jpeg->mode == MXC_JPEG_ENCODE) {
dev_dbg(dev, "Encoding on slot %d\n", ctx->slot);
ctx->enc_state = MXC_JPEG_ENC_CONF;
mxc_jpeg_config_enc_desc(&dst_buf->vb2_buf, ctx,
&src_buf->vb2_buf, &dst_buf->vb2_buf);
/* start config phase */
mxc_jpeg_enc_mode_conf(dev, reg,
mxc_jpeg_is_extended_sequential(q_data_out->fmt));
} else {
dev_dbg(dev, "Decoding on slot %d\n", ctx->slot);
print_mxc_buf(jpeg, &src_buf->vb2_buf, 0);
mxc_jpeg_config_dec_desc(&dst_buf->vb2_buf, ctx,
&src_buf->vb2_buf, &dst_buf->vb2_buf);
mxc_jpeg_dec_mode_go(dev, reg);
}
schedule_delayed_work(&ctx->task_timer, msecs_to_jiffies(hw_timeout));
end:
spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
}
static int mxc_jpeg_decoder_cmd(struct file *file, void *priv,
struct v4l2_decoder_cmd *cmd)
{
struct v4l2_fh *fh = file->private_data;
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
unsigned long flags;
int ret;
ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, cmd);
if (ret < 0)
return ret;
if (!vb2_is_streaming(v4l2_m2m_get_src_vq(fh->m2m_ctx)))
return 0;
spin_lock_irqsave(&ctx->mxc_jpeg->hw_lock, flags);
ret = v4l2_m2m_ioctl_decoder_cmd(file, priv, cmd);
spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
if (ret < 0)
return ret;
if (cmd->cmd == V4L2_DEC_CMD_STOP &&
v4l2_m2m_has_stopped(fh->m2m_ctx)) {
notify_eos(ctx);
ctx->header_parsed = false;
}
if (cmd->cmd == V4L2_DEC_CMD_START &&
v4l2_m2m_has_stopped(fh->m2m_ctx))
vb2_clear_last_buffer_dequeued(&fh->m2m_ctx->cap_q_ctx.q);
return 0;
}
static int mxc_jpeg_encoder_cmd(struct file *file, void *priv,
struct v4l2_encoder_cmd *cmd)
{
struct v4l2_fh *fh = file->private_data;
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
unsigned long flags;
int ret;
ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, cmd);
if (ret < 0)
return ret;
if (!vb2_is_streaming(v4l2_m2m_get_src_vq(fh->m2m_ctx)) ||
!vb2_is_streaming(v4l2_m2m_get_dst_vq(fh->m2m_ctx)))
return 0;
spin_lock_irqsave(&ctx->mxc_jpeg->hw_lock, flags);
ret = v4l2_m2m_ioctl_encoder_cmd(file, fh, cmd);
spin_unlock_irqrestore(&ctx->mxc_jpeg->hw_lock, flags);
if (ret < 0)
return 0;
if (cmd->cmd == V4L2_ENC_CMD_STOP &&
v4l2_m2m_has_stopped(fh->m2m_ctx))
notify_eos(ctx);
if (cmd->cmd == V4L2_ENC_CMD_START &&
v4l2_m2m_has_stopped(fh->m2m_ctx))
vb2_clear_last_buffer_dequeued(&fh->m2m_ctx->cap_q_ctx.q);
return 0;
}
static int mxc_jpeg_queue_setup(struct vb2_queue *q,
unsigned int *nbuffers,
unsigned int *nplanes,
unsigned int sizes[],
struct device *alloc_ctxs[])
{
struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
struct mxc_jpeg_q_data *q_data = NULL;
int i;
q_data = mxc_jpeg_get_q_data(ctx, q->type);
if (!q_data)
return -EINVAL;
/* Handle CREATE_BUFS situation - *nplanes != 0 */
if (*nplanes) {
if (*nplanes != q_data->fmt->mem_planes)
return -EINVAL;
for (i = 0; i < *nplanes; i++) {
if (sizes[i] < mxc_jpeg_get_plane_size(q_data, i))
return -EINVAL;
}
return 0;
}
/* Handle REQBUFS situation */
*nplanes = q_data->fmt->mem_planes;
for (i = 0; i < *nplanes; i++)
sizes[i] = mxc_jpeg_get_plane_size(q_data, i);
if (V4L2_TYPE_IS_OUTPUT(q->type))
ctx->need_initial_source_change_evt = true;
return 0;
}
static int mxc_jpeg_start_streaming(struct vb2_queue *q, unsigned int count)
{
struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, q->type);
int ret;
v4l2_m2m_update_start_streaming_state(ctx->fh.m2m_ctx, q);
if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE && V4L2_TYPE_IS_CAPTURE(q->type))
ctx->source_change = 0;
dev_dbg(ctx->mxc_jpeg->dev, "Start streaming ctx=%p", ctx);
q_data->sequence = 0;
if (V4L2_TYPE_IS_CAPTURE(q->type))
ctx->need_initial_source_change_evt = false;
ret = pm_runtime_resume_and_get(ctx->mxc_jpeg->dev);
if (ret < 0) {
dev_err(ctx->mxc_jpeg->dev, "Failed to power up jpeg\n");
return ret;
}
return 0;
}
static void mxc_jpeg_stop_streaming(struct vb2_queue *q)
{
struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(q);
struct vb2_v4l2_buffer *vbuf;
dev_dbg(ctx->mxc_jpeg->dev, "Stop streaming ctx=%p", ctx);
/* Release all active buffers */
for (;;) {
if (V4L2_TYPE_IS_OUTPUT(q->type))
vbuf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
else
vbuf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
if (!vbuf)
break;
v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR);
}
v4l2_m2m_update_stop_streaming_state(ctx->fh.m2m_ctx, q);
/* if V4L2_DEC_CMD_STOP is sent before the source change triggered,
* restore the is_draining flag
*/
if (V4L2_TYPE_IS_CAPTURE(q->type) && ctx->source_change && ctx->fh.m2m_ctx->last_src_buf)
ctx->fh.m2m_ctx->is_draining = true;
if (V4L2_TYPE_IS_OUTPUT(q->type) &&
v4l2_m2m_has_stopped(ctx->fh.m2m_ctx)) {
notify_eos(ctx);
ctx->header_parsed = false;
}
pm_runtime_put_sync(&ctx->mxc_jpeg->pdev->dev);
}
static int mxc_jpeg_valid_comp_id(struct device *dev,
struct mxc_jpeg_sof *sof,
struct mxc_jpeg_sos *sos)
{
int valid = 1;
int i;
/*
* there's a limitation in the IP that the component IDs must be
* between 0..4, if they are not, let's patch them
*/
for (i = 0; i < sof->components_no; i++)
if (sof->comp[i].id > MXC_JPEG_MAX_COMPONENTS) {
valid = 0;
dev_err(dev, "Component %d has invalid ID: %d",
i, sof->comp[i].id);
}
if (!valid)
/* patch all comp IDs if at least one is invalid */
for (i = 0; i < sof->components_no; i++) {
dev_warn(dev, "Component %d ID patched to: %d",
i, i + 1);
sof->comp[i].id = i + 1;
sos->comp[i].id = i + 1;
}
return valid;
}
static bool mxc_jpeg_match_image_format(const struct mxc_jpeg_fmt *fmt,
const struct v4l2_jpeg_header *header)
{
if (fmt->subsampling != header->frame.subsampling ||
fmt->nc != header->frame.num_components ||
fmt->precision != header->frame.precision)
return false;
/*
* If the transform flag from APP14 marker is 0, images that are
* encoded with 3 components have RGB colorspace, see Recommendation
* ITU-T T.872 chapter 6.5.3 APP14 marker segment for colour encoding
*/
if (header->frame.subsampling == V4L2_JPEG_CHROMA_SUBSAMPLING_444) {
u8 is_rgb = header->app14_tf == V4L2_JPEG_APP14_TF_CMYK_RGB ? 1 : 0;
if (is_rgb != fmt->is_rgb)
return false;
}
return true;
}
static u32 mxc_jpeg_get_image_format(struct device *dev,
const struct v4l2_jpeg_header *header)
{
int i;
u32 fourcc = 0;
for (i = 0; i < MXC_JPEG_NUM_FORMATS; i++) {
if (mxc_jpeg_match_image_format(&mxc_formats[i], header)) {
fourcc = mxc_formats[i].fourcc;
break;
}
}
if (fourcc == 0) {
dev_err(dev,
"Could not identify image format nc=%d, subsampling=%d, precision=%d\n",
header->frame.num_components,
header->frame.subsampling,
header->frame.precision);
return fourcc;
}
return fourcc;
}
static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q, u32 precision)
{
u32 bytesperline[2];
bytesperline[0] = q->bytesperline[0];
bytesperline[1] = q->bytesperline[0]; /*imx-jpeg only support the same line pitch*/
v4l_bound_align_image(&bytesperline[0], 0, MXC_JPEG_MAX_LINE, 2,
&bytesperline[1], 0, MXC_JPEG_MAX_LINE, 2,
0);
/* Bytes distance between the leftmost pixels in two adjacent lines */
if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
/* bytesperline unused for compressed formats */
q->bytesperline[0] = 0;
q->bytesperline[1] = 0;
} else if (q->fmt->subsampling == V4L2_JPEG_CHROMA_SUBSAMPLING_420) {
/* When the image format is planar the bytesperline value
* applies to the first plane and is divided by the same factor
* as the width field for the other planes
*/
q->bytesperline[0] = q->w_adjusted * DIV_ROUND_UP(precision, 8);
q->bytesperline[1] = q->bytesperline[0];
} else if (q->fmt->subsampling == V4L2_JPEG_CHROMA_SUBSAMPLING_422) {
q->bytesperline[0] = q->w_adjusted * DIV_ROUND_UP(precision, 8) * 2;
q->bytesperline[1] = 0;
} else if (q->fmt->subsampling == V4L2_JPEG_CHROMA_SUBSAMPLING_444) {
q->bytesperline[0] = q->w_adjusted * DIV_ROUND_UP(precision, 8) * q->fmt->nc;
q->bytesperline[1] = 0;
} else {
/* grayscale */
q->bytesperline[0] = q->w_adjusted * DIV_ROUND_UP(precision, 8);
q->bytesperline[1] = 0;
}
if (q->fmt->fourcc != V4L2_PIX_FMT_JPEG) {
q->bytesperline[0] = max(q->bytesperline[0], bytesperline[0]);
if (q->fmt->mem_planes > 1)
q->bytesperline[1] = max(q->bytesperline[1], bytesperline[1]);
}
}
static void mxc_jpeg_sizeimage(struct mxc_jpeg_q_data *q)
{
if (q->fmt->fourcc == V4L2_PIX_FMT_JPEG) {
/* if no sizeimage from user, assume worst jpeg compression */
if (!q->sizeimage[0])
q->sizeimage[0] = 6 * q->w * q->h;
q->sizeimage[1] = 0;
if (q->sizeimage[0] > MXC_JPEG_MAX_SIZEIMAGE)
q->sizeimage[0] = MXC_JPEG_MAX_SIZEIMAGE;
/* jpeg stream size must be multiple of 1K */
q->sizeimage[0] = ALIGN(q->sizeimage[0], 1024);
} else {
q->sizeimage[0] = q->bytesperline[0] * q->h_adjusted;
q->sizeimage[1] = 0;
if (q->fmt->subsampling == V4L2_JPEG_CHROMA_SUBSAMPLING_420)
q->sizeimage[1] = q->sizeimage[0] / 2;
}
}
static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx, struct vb2_buffer *vb)
{
struct device *dev = ctx->mxc_jpeg->dev;
struct mxc_jpeg_q_data *q_data_out;
struct mxc_jpeg_q_data *q_data_cap;
u32 fourcc;
struct v4l2_jpeg_header header;
struct mxc_jpeg_sof *psof = NULL;
struct mxc_jpeg_sos *psos = NULL;
struct mxc_jpeg_src_buf *jpeg_src_buf = vb2_to_mxc_buf(vb);
u8 *src_addr = (u8 *)vb2_plane_vaddr(vb, 0);
u32 size = vb2_get_plane_payload(vb, 0);
int ret;
memset(&header, 0, sizeof(header));
ret = v4l2_jpeg_parse_header((void *)src_addr, size, &header);
if (ret < 0) {
dev_err(dev, "Error parsing JPEG stream markers\n");
return ret;
}
/* if DHT marker present, no need to inject default one */
jpeg_src_buf->dht_needed = (header.num_dht == 0);
q_data_out = mxc_jpeg_get_q_data(ctx,
V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
q_data_out->w = header.frame.width;
q_data_out->h = header.frame.height;
if (header.frame.width > MXC_JPEG_MAX_WIDTH ||
header.frame.height > MXC_JPEG_MAX_HEIGHT) {
dev_err(dev, "JPEG width or height should be <= 8192: %dx%d\n",
header.frame.width, header.frame.height);
return -EINVAL;
}
if (header.frame.width < MXC_JPEG_MIN_WIDTH ||
header.frame.height < MXC_JPEG_MIN_HEIGHT) {
dev_err(dev, "JPEG width or height should be > 64: %dx%d\n",
header.frame.width, header.frame.height);
return -EINVAL;
}
if (header.frame.num_components > V4L2_JPEG_MAX_COMPONENTS) {
dev_err(dev, "JPEG number of components should be <=%d",
V4L2_JPEG_MAX_COMPONENTS);
return -EINVAL;
}
/* check and, if necessary, patch component IDs*/
psof = (struct mxc_jpeg_sof *)header.sof.start;
psos = (struct mxc_jpeg_sos *)header.sos.start;
if (!mxc_jpeg_valid_comp_id(dev, psof, psos))
dev_warn(dev, "JPEG component ids should be 0-3 or 1-4");
q_data_cap = mxc_jpeg_get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
if (q_data_cap->fmt && mxc_jpeg_match_image_format(q_data_cap->fmt, &header))
fourcc = q_data_cap->fmt->fourcc;
else
fourcc = mxc_jpeg_get_image_format(dev, &header);
if (fourcc == 0)
return -EINVAL;
jpeg_src_buf->fmt = mxc_jpeg_find_format(fourcc);
jpeg_src_buf->w = header.frame.width;
jpeg_src_buf->h = header.frame.height;
ctx->header_parsed = true;
if (!v4l2_m2m_num_src_bufs_ready(ctx->fh.m2m_ctx))
mxc_jpeg_source_change(ctx, jpeg_src_buf);
return 0;
}
static void mxc_jpeg_buf_queue(struct vb2_buffer *vb)
{
int ret;
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct mxc_jpeg_src_buf *jpeg_src_buf;
if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type) &&
vb2_is_streaming(vb->vb2_queue) &&
v4l2_m2m_dst_buf_is_last(ctx->fh.m2m_ctx)) {
struct mxc_jpeg_q_data *q_data;
q_data = mxc_jpeg_get_q_data(ctx, vb->vb2_queue->type);
vbuf->field = V4L2_FIELD_NONE;
vbuf->sequence = q_data->sequence++;
v4l2_m2m_last_buffer_done(ctx->fh.m2m_ctx, vbuf);
notify_eos(ctx);
ctx->header_parsed = false;
return;
}
if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
goto end;
/* for V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE */
if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
goto end;
jpeg_src_buf = vb2_to_mxc_buf(vb);
jpeg_src_buf->jpeg_parse_error = false;
ret = mxc_jpeg_parse(ctx, vb);
if (ret)
jpeg_src_buf->jpeg_parse_error = true;
end:
v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
}
static int mxc_jpeg_buf_out_validate(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
vbuf->field = V4L2_FIELD_NONE;
return 0;
}
static int mxc_jpeg_buf_prepare(struct vb2_buffer *vb)
{
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
struct mxc_jpeg_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
struct mxc_jpeg_q_data *q_data = NULL;
struct device *dev = ctx->mxc_jpeg->dev;
unsigned long sizeimage;
int i;
vbuf->field = V4L2_FIELD_NONE;
q_data = mxc_jpeg_get_q_data(ctx, vb->vb2_queue->type);
if (!q_data)
return -EINVAL;
for (i = 0; i < q_data->fmt->mem_planes; i++) {
sizeimage = mxc_jpeg_get_plane_size(q_data, i);
if (!ctx->source_change && vb2_plane_size(vb, i) < sizeimage) {
dev_err(dev, "plane %d too small (%lu < %lu)",
i, vb2_plane_size(vb, i), sizeimage);
return -EINVAL;
}
}
if (V4L2_TYPE_IS_CAPTURE(vb->vb2_queue->type)) {
vb2_set_plane_payload(vb, 0, 0);
vb2_set_plane_payload(vb, 1, 0);
}
return 0;
}
static const struct vb2_ops mxc_jpeg_qops = {
.queue_setup = mxc_jpeg_queue_setup,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
.buf_out_validate = mxc_jpeg_buf_out_validate,
.buf_prepare = mxc_jpeg_buf_prepare,
.start_streaming = mxc_jpeg_start_streaming,
.stop_streaming = mxc_jpeg_stop_streaming,
.buf_queue = mxc_jpeg_buf_queue,
};
static int mxc_jpeg_queue_init(void *priv, struct vb2_queue *src_vq,
struct vb2_queue *dst_vq)
{
struct mxc_jpeg_ctx *ctx = priv;
int ret;
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
src_vq->drv_priv = ctx;
src_vq->buf_struct_size = sizeof(struct mxc_jpeg_src_buf);
src_vq->ops = &mxc_jpeg_qops;
src_vq->mem_ops = &vb2_dma_contig_memops;
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
src_vq->lock = &ctx->mxc_jpeg->lock;
src_vq->dev = ctx->mxc_jpeg->dev;
ret = vb2_queue_init(src_vq);
if (ret)
return ret;
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
dst_vq->drv_priv = ctx;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->ops = &mxc_jpeg_qops;
dst_vq->mem_ops = &vb2_dma_contig_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->mxc_jpeg->lock;
dst_vq->dev = ctx->mxc_jpeg->dev;
ret = vb2_queue_init(dst_vq);
return ret;
}
static void mxc_jpeg_set_default_params(struct mxc_jpeg_ctx *ctx)
{
struct mxc_jpeg_q_data *out_q = &ctx->out_q;
struct mxc_jpeg_q_data *cap_q = &ctx->cap_q;
struct mxc_jpeg_q_data *q[2] = {out_q, cap_q};
int i;
if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE) {
out_q->fmt = mxc_jpeg_find_format(MXC_JPEG_DEFAULT_PFMT);
cap_q->fmt = mxc_jpeg_find_format(V4L2_PIX_FMT_JPEG);
} else {
out_q->fmt = mxc_jpeg_find_format(V4L2_PIX_FMT_JPEG);
cap_q->fmt = mxc_jpeg_find_format(MXC_JPEG_DEFAULT_PFMT);
}
for (i = 0; i < 2; i++) {
q[i]->w = MXC_JPEG_DEFAULT_WIDTH;
q[i]->h = MXC_JPEG_DEFAULT_HEIGHT;
q[i]->w_adjusted = MXC_JPEG_DEFAULT_WIDTH;
q[i]->h_adjusted = MXC_JPEG_DEFAULT_HEIGHT;
q[i]->crop.left = 0;
q[i]->crop.top = 0;
q[i]->crop.width = MXC_JPEG_DEFAULT_WIDTH;
q[i]->crop.height = MXC_JPEG_DEFAULT_HEIGHT;
mxc_jpeg_bytesperline(q[i], q[i]->fmt->precision);
mxc_jpeg_sizeimage(q[i]);
}
}
static int mxc_jpeg_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct mxc_jpeg_ctx *ctx =
container_of(ctrl->handler, struct mxc_jpeg_ctx, ctrl_handler);
switch (ctrl->id) {
case V4L2_CID_JPEG_COMPRESSION_QUALITY:
ctx->jpeg_quality = ctrl->val;
break;
default:
dev_err(ctx->mxc_jpeg->dev, "Invalid control, id = %d, val = %d\n",
ctrl->id, ctrl->val);
return -EINVAL;
}
return 0;
}
static const struct v4l2_ctrl_ops mxc_jpeg_ctrl_ops = {
.s_ctrl = mxc_jpeg_s_ctrl,
};
static void mxc_jpeg_encode_ctrls(struct mxc_jpeg_ctx *ctx)
{
v4l2_ctrl_new_std(&ctx->ctrl_handler, &mxc_jpeg_ctrl_ops,
V4L2_CID_JPEG_COMPRESSION_QUALITY, 1, 100, 1, 75);
}
static int mxc_jpeg_ctrls_setup(struct mxc_jpeg_ctx *ctx)
{
int err;
v4l2_ctrl_handler_init(&ctx->ctrl_handler, 2);
if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE)
mxc_jpeg_encode_ctrls(ctx);
if (ctx->ctrl_handler.error) {
err = ctx->ctrl_handler.error;
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
return err;
}
err = v4l2_ctrl_handler_setup(&ctx->ctrl_handler);
if (err)
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
return err;
}
static int mxc_jpeg_open(struct file *file)
{
struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
struct video_device *mxc_vfd = video_devdata(file);
struct device *dev = mxc_jpeg->dev;
struct mxc_jpeg_ctx *ctx;
int ret = 0;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx)
return -ENOMEM;
if (mutex_lock_interruptible(&mxc_jpeg->lock)) {
ret = -ERESTARTSYS;
goto free;
}
v4l2_fh_init(&ctx->fh, mxc_vfd);
file->private_data = &ctx->fh;
v4l2_fh_add(&ctx->fh);
ctx->mxc_jpeg = mxc_jpeg;
ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(mxc_jpeg->m2m_dev, ctx,
mxc_jpeg_queue_init);
if (IS_ERR(ctx->fh.m2m_ctx)) {
ret = PTR_ERR(ctx->fh.m2m_ctx);
goto error;
}
ret = mxc_jpeg_ctrls_setup(ctx);
if (ret) {
dev_err(ctx->mxc_jpeg->dev, "failed to setup mxc jpeg controls\n");
goto err_ctrls_setup;
}
ctx->fh.ctrl_handler = &ctx->ctrl_handler;
mxc_jpeg_set_default_params(ctx);
ctx->slot = -1; /* slot not allocated yet */
INIT_DELAYED_WORK(&ctx->task_timer, mxc_jpeg_device_run_timeout);
if (mxc_jpeg->mode == MXC_JPEG_DECODE)
dev_dbg(dev, "Opened JPEG decoder instance %p\n", ctx);
else
dev_dbg(dev, "Opened JPEG encoder instance %p\n", ctx);
mutex_unlock(&mxc_jpeg->lock);
return 0;
err_ctrls_setup:
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
error:
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
mutex_unlock(&mxc_jpeg->lock);
free:
kfree(ctx);
return ret;
}
static int mxc_jpeg_querycap(struct file *file, void *priv,
struct v4l2_capability *cap)
{
strscpy(cap->driver, MXC_JPEG_NAME " codec", sizeof(cap->driver));
strscpy(cap->card, MXC_JPEG_NAME " codec", sizeof(cap->card));
cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
return 0;
}
static int mxc_jpeg_enum_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, f->type);
if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE) {
return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
MXC_JPEG_FMT_TYPE_ENC);
} else if (!ctx->header_parsed) {
return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f,
MXC_JPEG_FMT_TYPE_RAW);
} else {
/* For the decoder CAPTURE queue, only enumerate the raw formats
* supported for the format currently active on OUTPUT
* (more precisely what was propagated on capture queue
* after jpeg parse on the output buffer)
*/
int ret = -EINVAL;
const struct mxc_jpeg_fmt *sibling;
switch (f->index) {
case 0:
f->pixelformat = q_data->fmt->fourcc;
ret = 0;
break;
case 1:
sibling = mxc_jpeg_get_sibling_format(q_data->fmt);
if (sibling) {
f->pixelformat = sibling->fourcc;
ret = 0;
}
break;
default:
break;
}
return ret;
}
}
static int mxc_jpeg_enum_fmt_vid_out(struct file *file, void *priv,
struct v4l2_fmtdesc *f)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
u32 type = ctx->mxc_jpeg->mode == MXC_JPEG_DECODE ? MXC_JPEG_FMT_TYPE_ENC :
MXC_JPEG_FMT_TYPE_RAW;
int ret;
ret = enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f, type);
if (ret)
return ret;
if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE)
f->flags = V4L2_FMT_FLAG_DYN_RESOLUTION;
return 0;
}
static u32 mxc_jpeg_get_fmt_type(struct mxc_jpeg_ctx *ctx, u32 type)
{
if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE)
return V4L2_TYPE_IS_OUTPUT(type) ? MXC_JPEG_FMT_TYPE_ENC : MXC_JPEG_FMT_TYPE_RAW;
else
return V4L2_TYPE_IS_CAPTURE(type) ? MXC_JPEG_FMT_TYPE_ENC : MXC_JPEG_FMT_TYPE_RAW;
}
static u32 mxc_jpeg_get_default_fourcc(struct mxc_jpeg_ctx *ctx, u32 type)
{
if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE)
return V4L2_TYPE_IS_OUTPUT(type) ? V4L2_PIX_FMT_JPEG : MXC_JPEG_DEFAULT_PFMT;
else
return V4L2_TYPE_IS_CAPTURE(type) ? V4L2_PIX_FMT_JPEG : MXC_JPEG_DEFAULT_PFMT;
}
static u32 mxc_jpeg_try_fourcc(struct mxc_jpeg_ctx *ctx, u32 fourcc)
{
const struct mxc_jpeg_fmt *sibling;
struct mxc_jpeg_q_data *q_data_cap;
if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
return fourcc;
if (!ctx->header_parsed)
return fourcc;
q_data_cap = &ctx->cap_q;
if (q_data_cap->fmt->fourcc == fourcc)
return fourcc;
sibling = mxc_jpeg_get_sibling_format(q_data_cap->fmt);
if (sibling && sibling->fourcc == fourcc)
return sibling->fourcc;
return q_data_cap->fmt->fourcc;
}
static int mxc_jpeg_try_fmt(struct v4l2_format *f,
struct mxc_jpeg_ctx *ctx, struct mxc_jpeg_q_data *q_data)
{
const struct mxc_jpeg_fmt *fmt;
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
struct v4l2_plane_pix_format *pfmt;
u32 fourcc = f->fmt.pix_mp.pixelformat;
u32 w = (pix_mp->width < MXC_JPEG_MAX_WIDTH) ?
pix_mp->width : MXC_JPEG_MAX_WIDTH;
u32 h = (pix_mp->height < MXC_JPEG_MAX_HEIGHT) ?
pix_mp->height : MXC_JPEG_MAX_HEIGHT;
int i;
fmt = mxc_jpeg_find_format(fourcc);
if (!fmt || fmt->flags != mxc_jpeg_get_fmt_type(ctx, f->type)) {
dev_warn(ctx->mxc_jpeg->dev, "Format not supported: %c%c%c%c, use the default.\n",
(fourcc & 0xff),
(fourcc >> 8) & 0xff,
(fourcc >> 16) & 0xff,
(fourcc >> 24) & 0xff);
fourcc = mxc_jpeg_get_default_fourcc(ctx, f->type);
fmt = mxc_jpeg_find_format(fourcc);
if (!fmt)
return -EINVAL;
f->fmt.pix_mp.pixelformat = fourcc;
}
q_data->fmt = fmt;
memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
pix_mp->field = V4L2_FIELD_NONE;
pix_mp->num_planes = fmt->mem_planes;
pix_mp->pixelformat = fmt->fourcc;
q_data->w = w;
q_data->h = h;
q_data->w_adjusted = w;
q_data->h_adjusted = h;
v4l_bound_align_image(&q_data->w_adjusted,
w, /* adjust upwards*/
MXC_JPEG_MAX_WIDTH,
fmt->h_align,
&q_data->h_adjusted,
h, /* adjust upwards*/
MXC_JPEG_MAX_HEIGHT,
fmt->v_align,
0);
for (i = 0; i < pix_mp->num_planes; i++) {
pfmt = &pix_mp->plane_fmt[i];
q_data->bytesperline[i] = pfmt->bytesperline;
q_data->sizeimage[i] = pfmt->sizeimage;
}
/* calculate bytesperline & sizeimage */
mxc_jpeg_bytesperline(q_data, fmt->precision);
mxc_jpeg_sizeimage(q_data);
/* adjust user format according to our calculations */
for (i = 0; i < pix_mp->num_planes; i++) {
pfmt = &pix_mp->plane_fmt[i];
memset(pfmt->reserved, 0, sizeof(pfmt->reserved));
pfmt->bytesperline = q_data->bytesperline[i];
pfmt->sizeimage = mxc_jpeg_get_plane_size(q_data, i);
}
/* fix colorspace information to sRGB for both output & capture */
pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
/*
* this hardware does not change the range of the samples
* but since inside JPEG the YUV quantization is full-range,
* this driver will always use full-range for the raw frames, too
*/
pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
if (fmt->flags == MXC_JPEG_FMT_TYPE_RAW) {
q_data->crop.left = 0;
q_data->crop.top = 0;
q_data->crop.width = q_data->w;
q_data->crop.height = q_data->h;
}
pix_mp->width = q_data->w_adjusted;
pix_mp->height = q_data->h_adjusted;
return 0;
}
static int mxc_jpeg_try_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
struct device *dev = jpeg->dev;
struct mxc_jpeg_q_data tmp_q;
if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
return -EINVAL;
}
if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE && V4L2_TYPE_IS_CAPTURE(f->type))
f->fmt.pix_mp.pixelformat = mxc_jpeg_try_fourcc(ctx, f->fmt.pix_mp.pixelformat);
return mxc_jpeg_try_fmt(f, ctx, &tmp_q);
}
static int mxc_jpeg_try_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
struct device *dev = jpeg->dev;
struct mxc_jpeg_q_data tmp_q;
if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
return -EINVAL;
}
return mxc_jpeg_try_fmt(f, ctx, &tmp_q);
}
static void mxc_jpeg_s_parsed_fmt(struct mxc_jpeg_ctx *ctx, struct v4l2_format *f)
{
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
struct mxc_jpeg_q_data *q_data_cap;
if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE || !V4L2_TYPE_IS_CAPTURE(f->type))
return;
if (!ctx->header_parsed)
return;
q_data_cap = mxc_jpeg_get_q_data(ctx, f->type);
pix_mp->pixelformat = mxc_jpeg_try_fourcc(ctx, pix_mp->pixelformat);
pix_mp->width = q_data_cap->w;
pix_mp->height = q_data_cap->h;
}
static int mxc_jpeg_s_fmt(struct mxc_jpeg_ctx *ctx,
struct v4l2_format *f)
{
struct vb2_queue *vq;
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (!vq)
return -EINVAL;
if (vb2_is_busy(vq)) {
v4l2_err(&jpeg->v4l2_dev, "queue busy\n");
return -EBUSY;
}
mxc_jpeg_s_parsed_fmt(ctx, f);
return mxc_jpeg_try_fmt(f, ctx, mxc_jpeg_get_q_data(ctx, f->type));
}
static int mxc_jpeg_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
}
static int mxc_jpeg_s_fmt_vid_out(struct file *file, void *priv,
struct v4l2_format *f)
{
int ret;
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
struct vb2_queue *dst_vq;
struct mxc_jpeg_q_data *q_data_cap;
enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
struct v4l2_format fc;
ret = mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f);
if (ret)
return ret;
if (ctx->mxc_jpeg->mode != MXC_JPEG_DECODE)
return 0;
dst_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, cap_type);
if (!dst_vq)
return -EINVAL;
if (vb2_is_busy(dst_vq))
return 0;
q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type);
if (q_data_cap->w == f->fmt.pix_mp.width && q_data_cap->h == f->fmt.pix_mp.height)
return 0;
memset(&fc, 0, sizeof(fc));
fc.type = cap_type;
fc.fmt.pix_mp.pixelformat = q_data_cap->fmt->fourcc;
fc.fmt.pix_mp.width = f->fmt.pix_mp.width;
fc.fmt.pix_mp.height = f->fmt.pix_mp.height;
return mxc_jpeg_s_fmt_vid_cap(file, priv, &fc);
}
static int mxc_jpeg_g_fmt_vid(struct file *file, void *priv,
struct v4l2_format *f)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv);
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
struct device *dev = jpeg->dev;
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
struct mxc_jpeg_q_data *q_data = mxc_jpeg_get_q_data(ctx, f->type);
int i;
if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
dev_err(dev, "G_FMT with Invalid type: %d\n", f->type);
return -EINVAL;
}
pix_mp->pixelformat = q_data->fmt->fourcc;
pix_mp->width = q_data->w;
pix_mp->height = q_data->h;
pix_mp->field = V4L2_FIELD_NONE;
if (q_data->fmt->flags == MXC_JPEG_FMT_TYPE_RAW) {
pix_mp->width = q_data->w_adjusted;
pix_mp->height = q_data->h_adjusted;
}
/* fix colorspace information to sRGB for both output & capture */
pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
pix_mp->ycbcr_enc = V4L2_YCBCR_ENC_601;
pix_mp->xfer_func = V4L2_XFER_FUNC_SRGB;
pix_mp->quantization = V4L2_QUANTIZATION_FULL_RANGE;
pix_mp->num_planes = q_data->fmt->mem_planes;
for (i = 0; i < pix_mp->num_planes; i++) {
pix_mp->plane_fmt[i].bytesperline = q_data->bytesperline[i];
pix_mp->plane_fmt[i].sizeimage = mxc_jpeg_get_plane_size(q_data, i);
}
return 0;
}
static int mxc_jpeg_dec_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
struct mxc_jpeg_q_data *q_data_cap;
if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE && s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
return -EINVAL;
q_data_cap = mxc_jpeg_get_q_data(ctx, s->type);
switch (s->target) {
case V4L2_SEL_TGT_COMPOSE:
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
s->r = q_data_cap->crop;
break;
case V4L2_SEL_TGT_COMPOSE_PADDED:
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
s->r.left = 0;
s->r.top = 0;
s->r.width = q_data_cap->w_adjusted;
s->r.height = q_data_cap->h_adjusted;
break;
default:
return -EINVAL;
}
return 0;
}
static int mxc_jpeg_enc_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
struct mxc_jpeg_q_data *q_data_out;
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
return -EINVAL;
q_data_out = mxc_jpeg_get_q_data(ctx, s->type);
switch (s->target) {
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
s->r.left = 0;
s->r.top = 0;
s->r.width = q_data_out->w;
s->r.height = q_data_out->h;
break;
case V4L2_SEL_TGT_CROP:
s->r = q_data_out->crop;
break;
default:
return -EINVAL;
}
return 0;
}
static int mxc_jpeg_g_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE)
return mxc_jpeg_dec_g_selection(file, fh, s);
else
return mxc_jpeg_enc_g_selection(file, fh, s);
}
static int mxc_jpeg_s_selection(struct file *file, void *fh, struct v4l2_selection *s)
{
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(fh);
struct mxc_jpeg_q_data *q_data_out;
if (ctx->mxc_jpeg->mode != MXC_JPEG_ENCODE)
return -ENOTTY;
if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT && s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
return -EINVAL;
if (s->target != V4L2_SEL_TGT_CROP)
return -EINVAL;
q_data_out = mxc_jpeg_get_q_data(ctx, s->type);
if (s->r.left || s->r.top)
return -EINVAL;
if (s->r.width > q_data_out->w || s->r.height > q_data_out->h)
return -EINVAL;
q_data_out->crop.left = 0;
q_data_out->crop.top = 0;
q_data_out->crop.width = s->r.width;
q_data_out->crop.height = s->r.height;
return 0;
}
static int mxc_jpeg_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);
case V4L2_EVENT_SOURCE_CHANGE:
return v4l2_src_change_event_subscribe(fh, sub);
case V4L2_EVENT_CTRL:
return v4l2_ctrl_subscribe_event(fh, sub);
default:
return -EINVAL;
}
}
static const struct v4l2_ioctl_ops mxc_jpeg_ioctl_ops = {
.vidioc_querycap = mxc_jpeg_querycap,
.vidioc_enum_fmt_vid_cap = mxc_jpeg_enum_fmt_vid_cap,
.vidioc_enum_fmt_vid_out = mxc_jpeg_enum_fmt_vid_out,
.vidioc_try_fmt_vid_cap_mplane = mxc_jpeg_try_fmt_vid_cap,
.vidioc_try_fmt_vid_out_mplane = mxc_jpeg_try_fmt_vid_out,
.vidioc_s_fmt_vid_cap_mplane = mxc_jpeg_s_fmt_vid_cap,
.vidioc_s_fmt_vid_out_mplane = mxc_jpeg_s_fmt_vid_out,
.vidioc_g_fmt_vid_cap_mplane = mxc_jpeg_g_fmt_vid,
.vidioc_g_fmt_vid_out_mplane = mxc_jpeg_g_fmt_vid,
.vidioc_g_selection = mxc_jpeg_g_selection,
.vidioc_s_selection = mxc_jpeg_s_selection,
.vidioc_subscribe_event = mxc_jpeg_subscribe_event,
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
.vidioc_decoder_cmd = mxc_jpeg_decoder_cmd,
.vidioc_try_encoder_cmd = v4l2_m2m_ioctl_try_encoder_cmd,
.vidioc_encoder_cmd = mxc_jpeg_encoder_cmd,
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
};
static int mxc_jpeg_release(struct file *file)
{
struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file);
struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(file->private_data);
struct device *dev = mxc_jpeg->dev;
mutex_lock(&mxc_jpeg->lock);
if (mxc_jpeg->mode == MXC_JPEG_DECODE)
dev_dbg(dev, "Release JPEG decoder instance on slot %d.",
ctx->slot);
else
dev_dbg(dev, "Release JPEG encoder instance on slot %d.",
ctx->slot);
v4l2_ctrl_handler_free(&ctx->ctrl_handler);
v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);
v4l2_fh_del(&ctx->fh);
v4l2_fh_exit(&ctx->fh);
kfree(ctx);
mutex_unlock(&mxc_jpeg->lock);
return 0;
}
static const struct v4l2_file_operations mxc_jpeg_fops = {
.owner = THIS_MODULE,
.open = mxc_jpeg_open,
.release = mxc_jpeg_release,
.poll = v4l2_m2m_fop_poll,
.unlocked_ioctl = video_ioctl2,
.mmap = v4l2_m2m_fop_mmap,
};
static const struct v4l2_m2m_ops mxc_jpeg_m2m_ops = {
.job_ready = mxc_jpeg_job_ready,
.device_run = mxc_jpeg_device_run,
};
static void mxc_jpeg_detach_pm_domains(struct mxc_jpeg_dev *jpeg)
{
int i;
for (i = 0; i < jpeg->num_domains; i++) {
if (jpeg->pd_link[i] && !IS_ERR(jpeg->pd_link[i]))
device_link_del(jpeg->pd_link[i]);
if (jpeg->pd_dev[i] && !IS_ERR(jpeg->pd_dev[i]))
dev_pm_domain_detach(jpeg->pd_dev[i], true);
jpeg->pd_dev[i] = NULL;
jpeg->pd_link[i] = NULL;
}
}
static int mxc_jpeg_attach_pm_domains(struct mxc_jpeg_dev *jpeg)
{
struct device *dev = jpeg->dev;
struct device_node *np = jpeg->pdev->dev.of_node;
int i;
int ret;
jpeg->num_domains = of_count_phandle_with_args(np, "power-domains",
"#power-domain-cells");
if (jpeg->num_domains < 0) {
dev_err(dev, "No power domains defined for jpeg node\n");
return jpeg->num_domains;
}
if (jpeg->num_domains == 1) {
/* genpd_dev_pm_attach() attach automatically if power domains count is 1 */
jpeg->num_domains = 0;
return 0;
}
jpeg->pd_dev = devm_kmalloc_array(dev, jpeg->num_domains,
sizeof(*jpeg->pd_dev), GFP_KERNEL);
if (!jpeg->pd_dev)
return -ENOMEM;
jpeg->pd_link = devm_kmalloc_array(dev, jpeg->num_domains,
sizeof(*jpeg->pd_link), GFP_KERNEL);
if (!jpeg->pd_link)
return -ENOMEM;
for (i = 0; i < jpeg->num_domains; i++) {
jpeg->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
if (IS_ERR(jpeg->pd_dev[i])) {
ret = PTR_ERR(jpeg->pd_dev[i]);
goto fail;
}
jpeg->pd_link[i] = device_link_add(dev, jpeg->pd_dev[i],
DL_FLAG_STATELESS |
DL_FLAG_PM_RUNTIME);
if (!jpeg->pd_link[i]) {
ret = -EINVAL;
goto fail;
}
}
return 0;
fail:
mxc_jpeg_detach_pm_domains(jpeg);
return ret;
}
static int mxc_jpeg_probe(struct platform_device *pdev)
{
struct mxc_jpeg_dev *jpeg;
struct device *dev = &pdev->dev;
int dec_irq;
int ret;
int mode;
const struct of_device_id *of_id;
of_id = of_match_node(mxc_jpeg_match, dev->of_node);
if (!of_id)
return -ENODEV;
mode = *(const int *)of_id->data;
jpeg = devm_kzalloc(dev, sizeof(struct mxc_jpeg_dev), GFP_KERNEL);
if (!jpeg)
return -ENOMEM;
mutex_init(&jpeg->lock);
spin_lock_init(&jpeg->hw_lock);
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(&pdev->dev, "No suitable DMA available.\n");
goto err_irq;
}
jpeg->base_reg = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(jpeg->base_reg))
return PTR_ERR(jpeg->base_reg);
ret = of_property_read_u32_index(pdev->dev.of_node, "slot", 0, &jpeg->slot_data.slot);
if (ret)
jpeg->slot_data.slot = 0;
dev_info(&pdev->dev, "choose slot %d\n", jpeg->slot_data.slot);
dec_irq = platform_get_irq(pdev, 0);
if (dec_irq < 0) {
ret = dec_irq;
goto err_irq;
}
ret = devm_request_irq(&pdev->dev, dec_irq, mxc_jpeg_dec_irq,
0, pdev->name, jpeg);
if (ret) {
dev_err(&pdev->dev, "Failed to request irq %d (%d)\n",
dec_irq, ret);
goto err_irq;
}
jpeg->pdev = pdev;
jpeg->dev = dev;
jpeg->mode = mode;
/* Get clocks */
ret = devm_clk_bulk_get_all(&pdev->dev, &jpeg->clks);
if (ret < 0) {
dev_err(dev, "failed to get clock\n");
goto err_clk;
}
jpeg->num_clks = ret;
ret = mxc_jpeg_attach_pm_domains(jpeg);
if (ret < 0) {
dev_err(dev, "failed to attach power domains %d\n", ret);
goto err_clk;
}
/* v4l2 */
ret = v4l2_device_register(dev, &jpeg->v4l2_dev);
if (ret) {
dev_err(dev, "failed to register v4l2 device\n");
goto err_register;
}
jpeg->m2m_dev = v4l2_m2m_init(&mxc_jpeg_m2m_ops);
if (IS_ERR(jpeg->m2m_dev)) {
dev_err(dev, "failed to register v4l2 device\n");
ret = PTR_ERR(jpeg->m2m_dev);
goto err_m2m;
}
jpeg->dec_vdev = video_device_alloc();
if (!jpeg->dec_vdev) {
dev_err(dev, "failed to register v4l2 device\n");
ret = -ENOMEM;
goto err_vdev_alloc;
}
if (mode == MXC_JPEG_ENCODE)
snprintf(jpeg->dec_vdev->name,
sizeof(jpeg->dec_vdev->name),
"%s-enc", MXC_JPEG_NAME);
else
snprintf(jpeg->dec_vdev->name,
sizeof(jpeg->dec_vdev->name),
"%s-dec", MXC_JPEG_NAME);
jpeg->dec_vdev->fops = &mxc_jpeg_fops;
jpeg->dec_vdev->ioctl_ops = &mxc_jpeg_ioctl_ops;
jpeg->dec_vdev->minor = -1;
jpeg->dec_vdev->release = video_device_release;
jpeg->dec_vdev->lock = &jpeg->lock; /* lock for ioctl serialization */
jpeg->dec_vdev->v4l2_dev = &jpeg->v4l2_dev;
jpeg->dec_vdev->vfl_dir = VFL_DIR_M2M;
jpeg->dec_vdev->device_caps = V4L2_CAP_STREAMING |
V4L2_CAP_VIDEO_M2M_MPLANE;
if (mode == MXC_JPEG_ENCODE) {
v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_DECODER_CMD);
v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_TRY_DECODER_CMD);
} else {
v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_ENCODER_CMD);
v4l2_disable_ioctl(jpeg->dec_vdev, VIDIOC_TRY_ENCODER_CMD);
}
ret = video_register_device(jpeg->dec_vdev, VFL_TYPE_VIDEO, -1);
if (ret) {
dev_err(dev, "failed to register video device\n");
goto err_vdev_register;
}
video_set_drvdata(jpeg->dec_vdev, jpeg);
if (mode == MXC_JPEG_ENCODE)
v4l2_info(&jpeg->v4l2_dev,
"encoder device registered as /dev/video%d (%d,%d)\n",
jpeg->dec_vdev->num, VIDEO_MAJOR,
jpeg->dec_vdev->minor);
else
v4l2_info(&jpeg->v4l2_dev,
"decoder device registered as /dev/video%d (%d,%d)\n",
jpeg->dec_vdev->num, VIDEO_MAJOR,
jpeg->dec_vdev->minor);
platform_set_drvdata(pdev, jpeg);
pm_runtime_enable(dev);
return 0;
err_vdev_register:
video_device_release(jpeg->dec_vdev);
err_vdev_alloc:
v4l2_m2m_release(jpeg->m2m_dev);
err_m2m:
v4l2_device_unregister(&jpeg->v4l2_dev);
err_register:
mxc_jpeg_detach_pm_domains(jpeg);
err_irq:
err_clk:
return ret;
}
#ifdef CONFIG_PM
static int mxc_jpeg_runtime_resume(struct device *dev)
{
struct mxc_jpeg_dev *jpeg = dev_get_drvdata(dev);
int ret;
ret = clk_bulk_prepare_enable(jpeg->num_clks, jpeg->clks);
if (ret < 0) {
dev_err(dev, "failed to enable clock\n");
return ret;
}
return 0;
}
static int mxc_jpeg_runtime_suspend(struct device *dev)
{
struct mxc_jpeg_dev *jpeg = dev_get_drvdata(dev);
clk_bulk_disable_unprepare(jpeg->num_clks, jpeg->clks);
return 0;
}
#endif
#ifdef CONFIG_PM_SLEEP
static int mxc_jpeg_suspend(struct device *dev)
{
struct mxc_jpeg_dev *jpeg = dev_get_drvdata(dev);
v4l2_m2m_suspend(jpeg->m2m_dev);
return pm_runtime_force_suspend(dev);
}
static int mxc_jpeg_resume(struct device *dev)
{
struct mxc_jpeg_dev *jpeg = dev_get_drvdata(dev);
int ret;
ret = pm_runtime_force_resume(dev);
if (ret < 0)
return ret;
v4l2_m2m_resume(jpeg->m2m_dev);
return ret;
}
#endif
static const struct dev_pm_ops mxc_jpeg_pm_ops = {
SET_RUNTIME_PM_OPS(mxc_jpeg_runtime_suspend,
mxc_jpeg_runtime_resume, NULL)
SET_SYSTEM_SLEEP_PM_OPS(mxc_jpeg_suspend, mxc_jpeg_resume)
};
static void mxc_jpeg_remove(struct platform_device *pdev)
{
struct mxc_jpeg_dev *jpeg = platform_get_drvdata(pdev);
mxc_jpeg_free_slot_data(jpeg);
pm_runtime_disable(&pdev->dev);
video_unregister_device(jpeg->dec_vdev);
v4l2_m2m_release(jpeg->m2m_dev);
v4l2_device_unregister(&jpeg->v4l2_dev);
mxc_jpeg_detach_pm_domains(jpeg);
}
MODULE_DEVICE_TABLE(of, mxc_jpeg_match);
static struct platform_driver mxc_jpeg_driver = {
.probe = mxc_jpeg_probe,
.remove_new = mxc_jpeg_remove,
.driver = {
.name = "mxc-jpeg",
.of_match_table = mxc_jpeg_match,
.pm = &mxc_jpeg_pm_ops,
},
};
module_platform_driver(mxc_jpeg_driver);
MODULE_AUTHOR("Zhengyu Shen <[email protected]>");
MODULE_AUTHOR("Mirela Rabulea <[email protected]>");
MODULE_DESCRIPTION("V4L2 driver for i.MX8 QXP/QM JPEG encoder/decoder");
MODULE_LICENSE("GPL v2");
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