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linuxdebug/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c

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null pointer error
2024-07-16 15:50:57 +02:00
// 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,
.colplanes = 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,
.colplanes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "ABGR", /* ABGR packed format */
.fourcc = V4L2_PIX_FMT_ABGR32,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
.nc = 4,
.depth = 32,
.colplanes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.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 */
.colplanes = 2, /* 1 plane Y, 1 plane UV interleaved */
.h_align = 4,
.v_align = 4,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "YUV422", /* YUYV */
.fourcc = V4L2_PIX_FMT_YUYV,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422,
.nc = 3,
.depth = 16,
.colplanes = 1,
.h_align = 4,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "YUV444", /* YUVYUV */
.fourcc = V4L2_PIX_FMT_YUV24,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444,
.nc = 3,
.depth = 24,
.colplanes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
{
.name = "Gray", /* Gray (Y8/Y12) or Single Comp */
.fourcc = V4L2_PIX_FMT_GREY,
.subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY,
.nc = 1,
.depth = 8,
.colplanes = 1,
.h_align = 3,
.v_align = 3,
.flags = MXC_JPEG_FMT_TYPE_RAW,
.precision = 8,
},
};
#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_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_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_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 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(struct mxc_jpeg_ctx *ctx,
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:
return MXC_JPEG_GRAY;
case V4L2_PIX_FMT_YUYV:
return MXC_JPEG_YUV422;
case V4L2_PIX_FMT_NV12M:
return MXC_JPEG_YUV420;
case V4L2_PIX_FMT_YUV24:
return MXC_JPEG_YUV444;
case V4L2_PIX_FMT_BGR24:
return MXC_JPEG_BGR;
case V4L2_PIX_FMT_ABGR32:
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;
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)) {
WARN_ON(raw_buf->num_planes < 2);
desc->buf_base1 = vb2_dma_contig_plane_dma_addr(raw_buf, 1);
}
desc->stm_bufbase = vb2_dma_contig_plane_dma_addr(jpeg_buf, 0) +
offset;
}
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[], int n)
{
int free_slot = 0;
while (slot_data[free_slot].used && free_slot < n)
free_slot++;
return free_slot; /* >=n when there are no more free slots */
}
static bool mxc_jpeg_alloc_slot_data(struct mxc_jpeg_dev *jpeg,
unsigned int slot)
{
struct mxc_jpeg_desc *desc;
struct mxc_jpeg_desc *cfg_desc;
void *cfg_stm;
if (jpeg->slot_data[slot].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[slot].desc_handle,
GFP_ATOMIC);
if (!desc)
goto err;
jpeg->slot_data[slot].desc = desc;
/* allocate descriptor for configuration phase (encoder only) */
cfg_desc = dma_alloc_coherent(jpeg->dev,
sizeof(struct mxc_jpeg_desc),
&jpeg->slot_data[slot].cfg_desc_handle,
GFP_ATOMIC);
if (!cfg_desc)
goto err;
jpeg->slot_data[slot].cfg_desc = cfg_desc;
/* allocate configuration stream */
cfg_stm = dma_alloc_coherent(jpeg->dev,
MXC_JPEG_MAX_CFG_STREAM,
&jpeg->slot_data[slot].cfg_stream_handle,
GFP_ATOMIC);
if (!cfg_stm)
goto err;
memset(cfg_stm, 0, MXC_JPEG_MAX_CFG_STREAM);
jpeg->slot_data[slot].cfg_stream_vaddr = cfg_stm;
skip_alloc:
jpeg->slot_data[slot].used = true;
return true;
err:
dev_err(jpeg->dev, "Could not allocate descriptors for slot %d", slot);
return false;
}
static void mxc_jpeg_free_slot_data(struct mxc_jpeg_dev *jpeg,
unsigned int slot)
{
if (slot >= MXC_MAX_SLOTS) {
dev_err(jpeg->dev, "Invalid slot %d, nothing to free.", slot);
return;
}
/* free descriptor for decoding/encoding phase */
dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
jpeg->slot_data[slot].desc,
jpeg->slot_data[slot].desc_handle);
/* free descriptor for encoder configuration phase / decoder DHT */
dma_free_coherent(jpeg->dev, sizeof(struct mxc_jpeg_desc),
jpeg->slot_data[slot].cfg_desc,
jpeg->slot_data[slot].cfg_desc_handle);
/* free configuration stream */
dma_free_coherent(jpeg->dev, MXC_JPEG_MAX_CFG_STREAM,
jpeg->slot_data[slot].cfg_stream_vaddr,
jpeg->slot_data[slot].cfg_stream_handle);
jpeg->slot_data[slot].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 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;
}
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, status=0x%08x", ret);
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) {
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);
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 = q_data->sizeimage[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->colplanes == 2) {
payload = q_data->sizeimage[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_disable_irq(reg, ctx->slot);
jpeg->slot_data[slot].used = false; /* unused, but don't free */
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, buf_state);
v4l2_m2m_buf_done(dst_buf, buf_state);
spin_unlock(&jpeg->hw_lock);
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;
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_NV12M:
sof->components_no = 3;
sof->comp[0].v = 0x2;
sof->comp[0].h = 0x2;
break;
case V4L2_PIX_FMT_YUYV:
sof->components_no = 3;
sof->comp[0].v = 0x1;
sof->comp[0].h = 0x2;
break;
case V4L2_PIX_FMT_YUV24:
case V4L2_PIX_FMT_BGR24:
default:
sof->components_no = 3;
break;
case V4L2_PIX_FMT_ABGR32:
sof->components_no = 4;
break;
case V4L2_PIX_FMT_GREY:
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_NV12M:
sos->components_no = 3;
break;
case V4L2_PIX_FMT_YUYV:
sos->components_no = 3;
break;
case V4L2_PIX_FMT_YUV24:
case V4L2_PIX_FMT_BGR24:
default:
sos->components_no = 3;
break;
case V4L2_PIX_FMT_ABGR32:
sos->components_no = 4;
break;
case V4L2_PIX_FMT_GREY:
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;
memcpy(cfg + offset, jpeg_soi, ARRAY_SIZE(jpeg_soi));
offset += ARRAY_SIZE(jpeg_soi);
if (fourcc == V4L2_PIX_FMT_BGR24 ||
fourcc == V4L2_PIX_FMT_ABGR32) {
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);
}
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);
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[slot].desc;
struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
dma_addr_t cfg_stream_handle = jpeg->slot_data[slot].cfg_stream_handle;
unsigned int *cfg_size = &jpeg->slot_data[slot].cfg_stream_size;
void *cfg_stream_vaddr = jpeg->slot_data[slot].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);
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[slot].desc;
struct mxc_jpeg_desc *cfg_desc = jpeg->slot_data[slot].cfg_desc;
dma_addr_t desc_handle = jpeg->slot_data[slot].desc_handle;
dma_addr_t cfg_desc_handle = jpeg->slot_data[slot].cfg_desc_handle;
void *cfg_stream_vaddr = jpeg->slot_data[slot].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[slot].cfg_stream_size =
mxc_jpeg_setup_cfg_stream(cfg_stream_vaddr,
q_data->fmt->fourcc,
q_data->w,
q_data->h);
/* 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[slot].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->w_adjusted;
h = q_data->h_adjusted;
mxc_jpeg_set_res(desc, w, h);
mxc_jpeg_set_line_pitch(desc, w * (q_data->fmt->depth / 8));
mxc_jpeg_set_bufsize(desc, desc->line_pitch * h);
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);
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 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 (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;
/*
* 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,
0,
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;
}
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(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->colplanes != 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->colplanes,
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, MXC_MAX_SLOTS);
if (ctx->slot >= MXC_MAX_SLOTS) {
dev_err(dev, "No more free slots\n");
goto end;
}
if (!mxc_jpeg_alloc_slot_data(jpeg, ctx->slot)) {
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);
mxc_jpeg_enc_mode_conf(dev, reg); /* start config phase */
} 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);
}
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);
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;
ret = v4l2_m2m_ioctl_decoder_cmd(file, priv, cmd);
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);
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;
ret = v4l2_m2m_ioctl_encoder_cmd(file, fh, cmd);
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;
struct mxc_jpeg_q_data tmp_q;
int i;
q_data = mxc_jpeg_get_q_data(ctx, q->type);
if (!q_data)
return -EINVAL;
tmp_q.fmt = q_data->fmt;
tmp_q.w = q_data->w_adjusted;
tmp_q.h = q_data->h_adjusted;
for (i = 0; i < MXC_JPEG_MAX_PLANES; i++) {
tmp_q.bytesperline[i] = q_data->bytesperline[i];
tmp_q.sizeimage[i] = q_data->sizeimage[i];
}
mxc_jpeg_sizeimage(&tmp_q);
for (i = 0; i < MXC_JPEG_MAX_PLANES; i++)
tmp_q.sizeimage[i] = max(tmp_q.sizeimage[i], q_data->sizeimage[i]);
/* Handle CREATE_BUFS situation - *nplanes != 0 */
if (*nplanes) {
if (*nplanes != q_data->fmt->colplanes)
return -EINVAL;
for (i = 0; i < *nplanes; i++) {
if (sizes[i] < tmp_q.sizeimage[i])
return -EINVAL;
}
return 0;
}
/* Handle REQBUFS situation */
*nplanes = q_data->fmt->colplanes;
for (i = 0; i < *nplanes; i++)
sizes[i] = tmp_q.sizeimage[i];
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;
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_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 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_formats[i].subsampling == header->frame.subsampling &&
mxc_formats[i].nc == header->frame.num_components &&
mxc_formats[i].precision == header->frame.precision) {
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;
}
/*
* 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 (fourcc == V4L2_PIX_FMT_YUV24 || fourcc == V4L2_PIX_FMT_BGR24) {
if (header->app14_tf == V4L2_JPEG_APP14_TF_CMYK_RGB)
fourcc = V4L2_PIX_FMT_BGR24;
else
fourcc = V4L2_PIX_FMT_YUV24;
}
return fourcc;
}
static void mxc_jpeg_bytesperline(struct mxc_jpeg_q_data *q, u32 precision)
{
/* 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 * 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 * 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 * DIV_ROUND_UP(precision, 8) * q->fmt->nc;
q->bytesperline[1] = 0;
} else {
/* grayscale */
q->bytesperline[0] = q->w * DIV_ROUND_UP(precision, 8);
q->bytesperline[1] = 0;
}
}
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;
q->sizeimage[1] = 0;
if (q->fmt->fourcc == V4L2_PIX_FMT_NV12M)
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;
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);
if (q_data_out->w == 0 && q_data_out->h == 0) {
dev_warn(dev, "Invalid user resolution 0x0");
dev_warn(dev, "Keeping resolution from JPEG: %dx%d",
header.frame.width, header.frame.height);
} else if (header.frame.width != q_data_out->w ||
header.frame.height != q_data_out->h) {
dev_err(dev,
"Resolution mismatch: %dx%d (JPEG) versus %dx%d(user)",
header.frame.width, header.frame.height,
q_data_out->w, q_data_out->h);
}
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");
fourcc = mxc_jpeg_get_image_format(dev, &header);
if (fourcc == 0)
return -EINVAL;
jpeg_src_buf->fmt = mxc_jpeg_find_format(ctx, 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->colplanes; i++) {
sizeimage = q_data->sizeimage[i];
if (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(ctx, MXC_JPEG_DEFAULT_PFMT);
cap_q->fmt = mxc_jpeg_find_format(ctx, V4L2_PIX_FMT_JPEG);
} else {
out_q->fmt = mxc_jpeg_find_format(ctx, V4L2_PIX_FMT_JPEG);
cap_q->fmt = mxc_jpeg_find_format(ctx, 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;
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 = MXC_MAX_SLOTS; /* slot not allocated yet */
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)
*/
if (f->index)
return -EINVAL;
f->pixelformat = q_data->fmt->fourcc;
return 0;
}
}
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 int mxc_jpeg_try_fmt(struct v4l2_format *f, const struct mxc_jpeg_fmt *fmt,
struct mxc_jpeg_ctx *ctx, int q_type)
{
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
struct v4l2_plane_pix_format *pfmt;
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;
struct mxc_jpeg_q_data tmp_q;
memset(pix_mp->reserved, 0, sizeof(pix_mp->reserved));
pix_mp->field = V4L2_FIELD_NONE;
pix_mp->num_planes = fmt->colplanes;
pix_mp->pixelformat = fmt->fourcc;
pix_mp->width = w;
pix_mp->height = h;
v4l_bound_align_image(&w,
w, /* adjust upwards*/
MXC_JPEG_MAX_WIDTH,
fmt->h_align,
&h,
h, /* adjust upwards*/
MXC_JPEG_MAX_HEIGHT,
0,
0);
/* get user input into the tmp_q */
tmp_q.w = w;
tmp_q.h = h;
tmp_q.fmt = fmt;
for (i = 0; i < pix_mp->num_planes; i++) {
pfmt = &pix_mp->plane_fmt[i];
tmp_q.bytesperline[i] = pfmt->bytesperline;
tmp_q.sizeimage[i] = pfmt->sizeimage;
}
/* calculate bytesperline & sizeimage into the tmp_q */
mxc_jpeg_bytesperline(&tmp_q, fmt->precision);
mxc_jpeg_sizeimage(&tmp_q);
/* 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 = tmp_q.bytesperline[i];
pfmt->sizeimage = tmp_q.sizeimage[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;
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;
const struct mxc_jpeg_fmt *fmt;
u32 fourcc = f->fmt.pix_mp.pixelformat;
int q_type = (jpeg->mode == MXC_JPEG_DECODE) ?
MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
return -EINVAL;
}
fmt = mxc_jpeg_find_format(ctx, fourcc);
if (!fmt || fmt->flags != q_type) {
dev_warn(dev, "Format not supported: %c%c%c%c, use the default.\n",
(fourcc & 0xff),
(fourcc >> 8) & 0xff,
(fourcc >> 16) & 0xff,
(fourcc >> 24) & 0xff);
f->fmt.pix_mp.pixelformat = (jpeg->mode == MXC_JPEG_DECODE) ?
MXC_JPEG_DEFAULT_PFMT : V4L2_PIX_FMT_JPEG;
fmt = mxc_jpeg_find_format(ctx, f->fmt.pix_mp.pixelformat);
}
return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
}
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;
const struct mxc_jpeg_fmt *fmt;
u32 fourcc = f->fmt.pix_mp.pixelformat;
int q_type = (jpeg->mode == MXC_JPEG_ENCODE) ?
MXC_JPEG_FMT_TYPE_RAW : MXC_JPEG_FMT_TYPE_ENC;
if (!V4L2_TYPE_IS_MULTIPLANAR(f->type)) {
dev_err(dev, "TRY_FMT with Invalid type: %d\n", f->type);
return -EINVAL;
}
fmt = mxc_jpeg_find_format(ctx, fourcc);
if (!fmt || fmt->flags != q_type) {
dev_warn(dev, "Format not supported: %c%c%c%c, use the default.\n",
(fourcc & 0xff),
(fourcc >> 8) & 0xff,
(fourcc >> 16) & 0xff,
(fourcc >> 24) & 0xff);
f->fmt.pix_mp.pixelformat = (jpeg->mode == MXC_JPEG_ENCODE) ?
MXC_JPEG_DEFAULT_PFMT : V4L2_PIX_FMT_JPEG;
fmt = mxc_jpeg_find_format(ctx, f->fmt.pix_mp.pixelformat);
}
return mxc_jpeg_try_fmt(f, fmt, ctx, q_type);
}
static int mxc_jpeg_s_fmt(struct mxc_jpeg_ctx *ctx,
struct v4l2_format *f)
{
struct vb2_queue *vq;
struct mxc_jpeg_q_data *q_data = NULL;
struct v4l2_pix_format_mplane *pix_mp = &f->fmt.pix_mp;
struct mxc_jpeg_dev *jpeg = ctx->mxc_jpeg;
int i;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
if (!vq)
return -EINVAL;
q_data = mxc_jpeg_get_q_data(ctx, f->type);
if (vb2_is_busy(vq)) {
v4l2_err(&jpeg->v4l2_dev, "queue busy\n");
return -EBUSY;
}
q_data->fmt = mxc_jpeg_find_format(ctx, pix_mp->pixelformat);
q_data->w = pix_mp->width;
q_data->h = pix_mp->height;
q_data->w_adjusted = q_data->w;
q_data->h_adjusted = q_data->h;
/*
* align up the resolution for CAST IP,
* but leave the buffer resolution unchanged
*/
v4l_bound_align_image(&q_data->w_adjusted,
q_data->w_adjusted, /* adjust upwards */
MXC_JPEG_MAX_WIDTH,
q_data->fmt->h_align,
&q_data->h_adjusted,
q_data->h_adjusted, /* adjust upwards */
MXC_JPEG_MAX_HEIGHT,
q_data->fmt->v_align,
0);
for (i = 0; i < pix_mp->num_planes; i++) {
q_data->bytesperline[i] = pix_mp->plane_fmt[i].bytesperline;
q_data->sizeimage[i] = pix_mp->plane_fmt[i].sizeimage;
}
return 0;
}
static int mxc_jpeg_s_fmt_vid_cap(struct file *file, void *priv,
struct v4l2_format *f)
{
int ret;
ret = mxc_jpeg_try_fmt_vid_cap(file, priv, f);
if (ret)
return ret;
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_try_fmt_vid_out(file, priv, f);
if (ret)
return ret;
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;
/* 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->colplanes;
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 = q_data->sizeimage[i];
}
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_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;
}
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;
unsigned int slot;
of_id = of_match_node(mxc_jpeg_match, dev->of_node);
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);
for (slot = 0; slot < MXC_MAX_SLOTS; slot++) {
dec_irq = platform_get_irq(pdev, slot);
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);
return ret;
}
/* 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 int mxc_jpeg_remove(struct platform_device *pdev)
{
unsigned int slot;
struct mxc_jpeg_dev *jpeg = platform_get_drvdata(pdev);
for (slot = 0; slot < MXC_MAX_SLOTS; slot++)
mxc_jpeg_free_slot_data(jpeg, slot);
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);
return 0;
}
MODULE_DEVICE_TABLE(of, mxc_jpeg_match);
static struct platform_driver mxc_jpeg_driver = {
.probe = mxc_jpeg_probe,
.remove = 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 <zhengyu.shen_1@nxp.com>");
MODULE_AUTHOR("Mirela Rabulea <mirela.rabulea@nxp.com>");
MODULE_DESCRIPTION("V4L2 driver for i.MX8 QXP/QM JPEG encoder/decoder");
MODULE_LICENSE("GPL v2");