diff options
Diffstat (limited to 'drivers/media/platform/imx-jpeg/mxc-jpeg.c')
| -rw-r--r-- | drivers/media/platform/imx-jpeg/mxc-jpeg.c | 2126 |
1 files changed, 2126 insertions, 0 deletions
diff --git a/drivers/media/platform/imx-jpeg/mxc-jpeg.c b/drivers/media/platform/imx-jpeg/mxc-jpeg.c new file mode 100644 index 000000000000..03b9264af068 --- /dev/null +++ b/drivers/media/platform/imx-jpeg/mxc-jpeg.c @@ -0,0 +1,2126 @@ +// 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, RGB, ARGB, 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/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_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 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 = "RGB", /*RGBRGB packed format*/ + .fourcc = V4L2_PIX_FMT_RGB24, + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, + .nc = 3, + .depth = 24, + .colplanes = 1, + .h_align = 3, + .v_align = 3, + .flags = MXC_JPEG_FMT_TYPE_RAW, + }, + { + .name = "ARGB", /* ARGBARGB packed format */ + .fourcc = V4L2_PIX_FMT_ARGB32, + .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, + .nc = 4, + .depth = 32, + .colplanes = 1, + .h_align = 3, + .v_align = 3, + .flags = MXC_JPEG_FMT_TYPE_RAW, + }, + { + .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 */ + .colplanes = 2, /* 1 plane Y, 1 plane UV interleaved */ + .h_align = 4, + .v_align = 4, + .flags = MXC_JPEG_FMT_TYPE_RAW, + }, + { + .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, + }, + { + .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, + }, + { + .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, + }, +}; + +#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_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; +}; + +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 _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(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; + + strscpy(f->description, mxc_formats[i].name, sizeof(f->description)); + f->pixelformat = mxc_formats[i].fourcc; + + return 0; +} + +static 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++) { + 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_NV12: + return MXC_JPEG_YUV420; + case V4L2_PIX_FMT_YUV24: + return MXC_JPEG_YUV444; + case V4L2_PIX_FMT_RGB24: + return MXC_JPEG_RGB; + case V4L2_PIX_FMT_ARGB32: + return MXC_JPEG_ARGB; + 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; + 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 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 (!ctx) { + dev_err(dev, + "Instance released before the end of transaction.\n"); + /* soft reset only resets internal state, not registers */ + mxc_jpeg_sw_reset(reg); + /* clear all interrupts */ + writel(0xFFFFFFFF, reg + MXC_SLOT_OFFSET(slot, SLOT_STATUS)); + 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); + 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_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: + jpeg->slot_data[slot].used = false; /* unused, but don't free */ + 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_NV12: + 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_RGB24: + default: + sof->components_no = 3; + break; + case V4L2_PIX_FMT_ARGB32: + 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_NV12: + sos->components_no = 3; + break; + case V4L2_PIX_FMT_YUYV: + sos->components_no = 3; + break; + case V4L2_PIX_FMT_YUV24: + case V4L2_PIX_FMT_RGB24: + default: + sos->components_no = 3; + break; + case V4L2_PIX_FMT_ARGB32: + 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) +{ + unsigned int offset = 0; + 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_RGB24 || + fourcc == V4L2_PIX_FMT_ARGB32) { + 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_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->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_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_adjusted, + q_data->h_adjusted); + + /* 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); + + 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); + 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 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 (jpeg_src_buf->jpeg_parse_error) { + jpeg->slot_data[ctx->slot].used = false; + 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; + } + + /* + * TODO: this reset should be removed, once we figure out + * how to overcome hardware issues both on encoder and decoder + */ + mxc_jpeg_sw_reset(reg); + 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); + struct device *dev = ctx->mxc_jpeg->dev; + int ret; + + ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, cmd); + if (ret < 0) + return ret; + + if (cmd->cmd == V4L2_DEC_CMD_STOP) { + dev_dbg(dev, "Received V4L2_DEC_CMD_STOP"); + if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) { + /* No more src bufs, notify app EOS */ + notify_eos(ctx); + } else { + /* will send EOS later*/ + ctx->stopping = 1; + } + } + + 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); + struct device *dev = ctx->mxc_jpeg->dev; + int ret; + + ret = v4l2_m2m_ioctl_try_encoder_cmd(file, fh, cmd); + if (ret < 0) + return ret; + + if (cmd->cmd == V4L2_ENC_CMD_STOP) { + dev_dbg(dev, "Received V4L2_ENC_CMD_STOP"); + if (v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx) == 0) { + /* No more src bufs, notify app EOS */ + notify_eos(ctx); + } else { + /* will send EOS later*/ + ctx->stopping = 1; + } + } + + 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) { + for (i = 0; i < *nplanes; i++) { + if (sizes[i] < q_data->sizeimage[i]) + return -EINVAL; + } + return 0; + } + + /* Handle REQBUFS situation */ + *nplanes = q_data->fmt->colplanes; + for (i = 0; i < *nplanes; i++) + sizes[i] = q_data->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); + + dev_dbg(ctx->mxc_jpeg->dev, "Start streaming ctx=%p", ctx); + q_data->sequence = 0; + + 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) + return; + v4l2_m2m_buf_done(vbuf, VB2_BUF_STATE_ERROR); + } +} + +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) { + fourcc = mxc_formats[i].fourcc; + break; + } + if (fourcc == 0) { + dev_err(dev, "Could not identify image format nc=%d, subsampling=%d\n", + header->frame.num_components, + header->frame.subsampling); + 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_RGB24) { + if (header->app14_tf == V4L2_JPEG_APP14_TF_CMYK_RGB) + fourcc = V4L2_PIX_FMT_RGB24; + 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->fourcc == V4L2_PIX_FMT_NV12) { + /* 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 * (precision / 8) * + (q->fmt->depth / 8); + q->bytesperline[1] = q->bytesperline[0]; + } else { + /* single plane formats */ + q->bytesperline[0] = q->w * (precision / 8) * + (q->fmt->depth / 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_NV12) + q->sizeimage[1] = q->sizeimage[0] / 2; + } +} + +static int mxc_jpeg_parse(struct mxc_jpeg_ctx *ctx, + u8 *src_addr, u32 size, bool *dht_needed) +{ + struct device *dev = ctx->mxc_jpeg->dev; + struct mxc_jpeg_q_data *q_data_out, *q_data_cap; + enum v4l2_buf_type cap_type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; + bool src_chg = false; + u32 fourcc; + struct v4l2_jpeg_header header; + struct mxc_jpeg_sof *psof = NULL; + struct mxc_jpeg_sos *psos = NULL; + 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 */ + *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); + q_data_out->w = header.frame.width; + q_data_out->h = 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); + return -EINVAL; + } + if (header.frame.width % 8 != 0 || header.frame.height % 8 != 0) { + dev_err(dev, "JPEG width or height not multiple of 8: %dx%d\n", + header.frame.width, header.frame.height); + return -EINVAL; + } + 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; + + /* + * set-up the capture queue with the pixelformat and resolution + * detected from the jpeg output stream + */ + q_data_cap = mxc_jpeg_get_q_data(ctx, cap_type); + if (q_data_cap->w != header.frame.width || + q_data_cap->h != header.frame.height) + src_chg = true; + q_data_cap->w = header.frame.width; + q_data_cap->h = header.frame.height; + q_data_cap->fmt = mxc_jpeg_find_format(ctx, fourcc); + 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, + q_data_cap->fmt->v_align, + 0); + dev_dbg(dev, "Detected jpeg res=(%dx%d)->(%dx%d), pixfmt=%c%c%c%c\n", + q_data_cap->w, q_data_cap->h, + q_data_cap->w_adjusted, q_data_cap->h_adjusted, + (fourcc & 0xff), + (fourcc >> 8) & 0xff, + (fourcc >> 16) & 0xff, + (fourcc >> 24) & 0xff); + + /* setup bytesperline/sizeimage for capture queue */ + mxc_jpeg_bytesperline(q_data_cap, header.frame.precision); + mxc_jpeg_sizeimage(q_data_cap); + + /* + * if the CAPTURE format was updated with new values, regardless of + * whether they match the values set by the client or not, signal + * a source change event + */ + if (src_chg) + notify_src_chg(ctx); + + 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 (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, + (u8 *)vb2_plane_vaddr(vb, 0), + vb2_get_plane_payload(vb, 0), + &jpeg_src_buf->dht_needed); + 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; + } + vb2_set_plane_payload(vb, i, sizeimage); + } + 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; + src_vq->allow_zero_bytesused = 1; /* keep old userspace apps working */ + + 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], 8); + mxc_jpeg_sizeimage(q[i]); + } +} + +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; + } + + 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; + +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) +{ + struct mxc_jpeg_dev *mxc_jpeg = video_drvdata(file); + + strscpy(cap->driver, MXC_JPEG_NAME " codec", sizeof(cap->driver)); + strscpy(cap->card, MXC_JPEG_NAME " codec", sizeof(cap->card)); + snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", + dev_name(mxc_jpeg->dev)); + 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); + + if (ctx->mxc_jpeg->mode == MXC_JPEG_ENCODE) + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f, + MXC_JPEG_FMT_TYPE_ENC); + else + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f, + MXC_JPEG_FMT_TYPE_RAW); +} + +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); + + if (ctx->mxc_jpeg->mode == MXC_JPEG_DECODE) + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f, + MXC_JPEG_FMT_TYPE_ENC); + else + return enum_fmt(mxc_formats, MXC_JPEG_NUM_FORMATS, f, + MXC_JPEG_FMT_TYPE_RAW); +} + +static int mxc_jpeg_try_fmt(struct v4l2_format *f, 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; + + /* + * use MXC_JPEG_H_ALIGN instead of fmt->v_align, for vertical + * alignment, to loosen up the alignment to multiple of 8, + * otherwise NV12-1080p fails as 1080 is not a multiple of 16 + */ + v4l_bound_align_image(&w, + MXC_JPEG_MIN_WIDTH, + w, /* adjust downwards*/ + fmt->h_align, + &h, + MXC_JPEG_MIN_HEIGHT, + h, /* adjust downwards*/ + MXC_JPEG_H_ALIGN, + 0); + pix_mp->width = w; /* negotiate the width */ + pix_mp->height = h; /* negotiate the height */ + + /* 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, 8); + 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; + 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; + 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; + if (jpeg->mode == MXC_JPEG_DECODE) { + /* + * 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); + } else { + /* + * align down the resolution for CAST IP, + * but leave the buffer resolution unchanged + */ + v4l_bound_align_image(&q_data->w_adjusted, + MXC_JPEG_MIN_WIDTH, + q_data->w_adjusted, /* adjust downwards*/ + q_data->fmt->h_align, + &q_data->h_adjusted, + MXC_JPEG_MIN_HEIGHT, + q_data->h_adjusted, /* adjust downwards*/ + 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; + + ret = mxc_jpeg_try_fmt_vid_out(file, priv, f); + if (ret) + return ret; + + return mxc_jpeg_s_fmt(mxc_jpeg_fh_to_ctx(priv), f); +} + +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); + default: + return -EINVAL; + } +} + +static int mxc_jpeg_dqbuf(struct file *file, void *priv, + struct v4l2_buffer *buf) +{ + struct v4l2_fh *fh = file->private_data; + struct mxc_jpeg_ctx *ctx = mxc_jpeg_fh_to_ctx(priv); + struct device *dev = ctx->mxc_jpeg->dev; + int num_src_ready = v4l2_m2m_num_src_bufs_ready(fh->m2m_ctx); + int ret; + + dev_dbg(dev, "DQBUF type=%d, index=%d", buf->type, buf->index); + if (ctx->stopping == 1 && num_src_ready == 0) { + /* No more src bufs, notify app EOS */ + notify_eos(ctx); + ctx->stopping = 0; + } + + ret = v4l2_m2m_dqbuf(file, fh->m2m_ctx, buf); + + return ret; +} + +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 = mxc_jpeg_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_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 struct v4l2_m2m_ops mxc_jpeg_m2m_ops = { + .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 | + DL_FLAG_RPM_ACTIVE); + 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; + struct resource *res; + 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; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + jpeg->base_reg = devm_ioremap_resource(&pdev->dev, res); + 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) { + dev_err(&pdev->dev, "Failed to get irq %d\n", dec_irq); + 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; + + 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); + + 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: +err_irq: + return ret; +} + +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); + + 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, + }, +}; +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"); |