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path: root/drivers/media/platform/coda/coda-jpeg.c
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Diffstat (limited to 'drivers/media/platform/coda/coda-jpeg.c')
-rw-r--r--drivers/media/platform/coda/coda-jpeg.c577
1 files changed, 577 insertions, 0 deletions
diff --git a/drivers/media/platform/coda/coda-jpeg.c b/drivers/media/platform/coda/coda-jpeg.c
index 92234fd1f4fd..00d19859db50 100644
--- a/drivers/media/platform/coda/coda-jpeg.c
+++ b/drivers/media/platform/coda/coda-jpeg.c
@@ -15,6 +15,7 @@
#include <media/v4l2-common.h>
#include <media/v4l2-fh.h>
+#include <media/v4l2-jpeg.h>
#include <media/v4l2-mem2mem.h>
#include <media/videobuf2-core.h>
#include <media/videobuf2-dma-contig.h>
@@ -23,10 +24,12 @@
#include "trace.h"
#define SOI_MARKER 0xffd8
+#define APP9_MARKER 0xffe9
#define DRI_MARKER 0xffdd
#define DQT_MARKER 0xffdb
#define DHT_MARKER 0xffc4
#define SOF_MARKER 0xffc0
+#define SOS_MARKER 0xffda
#define EOI_MARKER 0xffd9
enum {
@@ -37,6 +40,18 @@ enum {
CODA9_JPEG_FORMAT_400,
};
+struct coda_huff_tab {
+ u8 luma_dc[16 + 12];
+ u8 chroma_dc[16 + 12];
+ u8 luma_ac[16 + 162];
+ u8 chroma_ac[16 + 162];
+
+ /* DC Luma, DC Chroma, AC Luma, AC Chroma */
+ s16 min[4 * 16];
+ s16 max[4 * 16];
+ s8 ptr[4 * 16];
+};
+
#define CODA9_JPEG_ENC_HUFF_DATA_SIZE (256 + 256 + 16 + 16)
/*
@@ -247,6 +262,291 @@ bool coda_jpeg_check_buffer(struct coda_ctx *ctx, struct vb2_buffer *vb)
return false;
}
+static int coda9_jpeg_gen_dec_huff_tab(struct coda_ctx *ctx, int tab_num);
+
+int coda_jpeg_decode_header(struct coda_ctx *ctx, struct vb2_buffer *vb)
+{
+ struct coda_dev *dev = ctx->dev;
+ u8 *buf = vb2_plane_vaddr(vb, 0);
+ size_t len = vb2_get_plane_payload(vb, 0);
+ struct v4l2_jpeg_scan_header scan_header;
+ struct v4l2_jpeg_reference quantization_tables[4] = { };
+ struct v4l2_jpeg_reference huffman_tables[4] = { };
+ struct v4l2_jpeg_header header = {
+ .scan = &scan_header,
+ .quantization_tables = quantization_tables,
+ .huffman_tables = huffman_tables,
+ };
+ struct coda_q_data *q_data_src;
+ struct coda_huff_tab *huff_tab;
+ int i, j, ret;
+
+ ret = v4l2_jpeg_parse_header(buf, len, &header);
+ if (ret < 0) {
+ v4l2_err(&dev->v4l2_dev, "failed to parse header\n");
+ return ret;
+ }
+
+ ctx->params.jpeg_restart_interval = header.restart_interval;
+
+ /* check frame header */
+ if (header.frame.height > ctx->codec->max_h ||
+ header.frame.width > ctx->codec->max_w) {
+ v4l2_err(&dev->v4l2_dev, "invalid dimensions: %dx%d\n",
+ header.frame.width, header.frame.height);
+ return -EINVAL;
+ }
+
+ q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+ if (header.frame.height != q_data_src->height ||
+ header.frame.width != q_data_src->width) {
+ v4l2_err(&dev->v4l2_dev,
+ "dimensions don't match format: %dx%d\n",
+ header.frame.width, header.frame.height);
+ return -EINVAL;
+ }
+
+ if (header.frame.num_components != 3) {
+ v4l2_err(&dev->v4l2_dev,
+ "unsupported number of components: %d\n",
+ header.frame.num_components);
+ return -EINVAL;
+ }
+
+ /* install quantization tables */
+ if (quantization_tables[3].start) {
+ v4l2_err(&dev->v4l2_dev,
+ "only 3 quantization tables supported\n");
+ return -EINVAL;
+ }
+ for (i = 0; i < 3; i++) {
+ if (!quantization_tables[i].start)
+ continue;
+ if (quantization_tables[i].length != 64) {
+ v4l2_err(&dev->v4l2_dev,
+ "only 8-bit quantization tables supported\n");
+ continue;
+ }
+ if (!ctx->params.jpeg_qmat_tab[i])
+ ctx->params.jpeg_qmat_tab[i] = kmalloc(64, GFP_KERNEL);
+ memcpy(ctx->params.jpeg_qmat_tab[i],
+ quantization_tables[i].start, 64);
+ }
+
+ /* install Huffman tables */
+ for (i = 0; i < 4; i++) {
+ if (!huffman_tables[i].start) {
+ v4l2_err(&dev->v4l2_dev, "missing Huffman table\n");
+ return -EINVAL;
+ }
+ /* AC tables should be between 17 -> 178, DC between 17 -> 28 */
+ if (huffman_tables[i].length < 17 ||
+ huffman_tables[i].length > 178 ||
+ ((i & 2) == 0 && huffman_tables[i].length > 28)) {
+ v4l2_err(&dev->v4l2_dev,
+ "invalid Huffman table %d length: %zu\n",
+ i, huffman_tables[i].length);
+ return -EINVAL;
+ }
+ }
+ huff_tab = ctx->params.jpeg_huff_tab;
+ if (!huff_tab) {
+ huff_tab = kzalloc(sizeof(struct coda_huff_tab), GFP_KERNEL);
+ if (!huff_tab)
+ return -ENOMEM;
+ ctx->params.jpeg_huff_tab = huff_tab;
+ }
+
+ memset(huff_tab, 0, sizeof(*huff_tab));
+ memcpy(huff_tab->luma_dc, huffman_tables[0].start, huffman_tables[0].length);
+ memcpy(huff_tab->chroma_dc, huffman_tables[1].start, huffman_tables[1].length);
+ memcpy(huff_tab->luma_ac, huffman_tables[2].start, huffman_tables[2].length);
+ memcpy(huff_tab->chroma_ac, huffman_tables[3].start, huffman_tables[3].length);
+
+ /* check scan header */
+ for (i = 0; i < scan_header.num_components; i++) {
+ struct v4l2_jpeg_scan_component_spec *scan_component;
+
+ scan_component = &scan_header.component[i];
+ for (j = 0; j < header.frame.num_components; j++) {
+ if (header.frame.component[j].component_identifier ==
+ scan_component->component_selector)
+ break;
+ }
+ if (j == header.frame.num_components)
+ continue;
+
+ ctx->params.jpeg_huff_dc_index[j] =
+ scan_component->dc_entropy_coding_table_selector;
+ ctx->params.jpeg_huff_ac_index[j] =
+ scan_component->ac_entropy_coding_table_selector;
+ }
+
+ /* Generate Huffman table information */
+ for (i = 0; i < 4; i++)
+ coda9_jpeg_gen_dec_huff_tab(ctx, i);
+
+ /* start of entropy coded segment */
+ ctx->jpeg_ecs_offset = header.ecs_offset;
+
+ switch (header.frame.subsampling) {
+ case V4L2_JPEG_CHROMA_SUBSAMPLING_420:
+ case V4L2_JPEG_CHROMA_SUBSAMPLING_422:
+ ctx->params.jpeg_chroma_subsampling = header.frame.subsampling;
+ break;
+ default:
+ v4l2_err(&dev->v4l2_dev, "chroma subsampling not supported: %d",
+ header.frame.subsampling);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static inline void coda9_jpeg_write_huff_values(struct coda_dev *dev, u8 *bits,
+ int num_values)
+{
+ s8 *values = (s8 *)(bits + 16);
+ int huff_length, i;
+
+ for (huff_length = 0, i = 0; i < 16; i++)
+ huff_length += bits[i];
+ for (i = huff_length; i < num_values; i++)
+ values[i] = -1;
+ for (i = 0; i < num_values; i++)
+ coda_write(dev, (s32)values[i], CODA9_REG_JPEG_HUFF_DATA);
+}
+
+static int coda9_jpeg_dec_huff_setup(struct coda_ctx *ctx)
+{
+ struct coda_huff_tab *huff_tab = ctx->params.jpeg_huff_tab;
+ struct coda_dev *dev = ctx->dev;
+ s16 *huff_min = huff_tab->min;
+ s16 *huff_max = huff_tab->max;
+ s8 *huff_ptr = huff_tab->ptr;
+ int i;
+
+ /* MIN Tables */
+ coda_write(dev, 0x003, CODA9_REG_JPEG_HUFF_CTRL);
+ coda_write(dev, 0x000, CODA9_REG_JPEG_HUFF_ADDR);
+ for (i = 0; i < 4 * 16; i++)
+ coda_write(dev, (s32)huff_min[i], CODA9_REG_JPEG_HUFF_DATA);
+
+ /* MAX Tables */
+ coda_write(dev, 0x403, CODA9_REG_JPEG_HUFF_CTRL);
+ coda_write(dev, 0x440, CODA9_REG_JPEG_HUFF_ADDR);
+ for (i = 0; i < 4 * 16; i++)
+ coda_write(dev, (s32)huff_max[i], CODA9_REG_JPEG_HUFF_DATA);
+
+ /* PTR Tables */
+ coda_write(dev, 0x803, CODA9_REG_JPEG_HUFF_CTRL);
+ coda_write(dev, 0x880, CODA9_REG_JPEG_HUFF_ADDR);
+ for (i = 0; i < 4 * 16; i++)
+ coda_write(dev, (s32)huff_ptr[i], CODA9_REG_JPEG_HUFF_DATA);
+
+ /* VAL Tables: DC Luma, DC Chroma, AC Luma, AC Chroma */
+ coda_write(dev, 0xc03, CODA9_REG_JPEG_HUFF_CTRL);
+ coda9_jpeg_write_huff_values(dev, huff_tab->luma_dc, 12);
+ coda9_jpeg_write_huff_values(dev, huff_tab->chroma_dc, 12);
+ coda9_jpeg_write_huff_values(dev, huff_tab->luma_ac, 162);
+ coda9_jpeg_write_huff_values(dev, huff_tab->chroma_ac, 162);
+ coda_write(dev, 0x000, CODA9_REG_JPEG_HUFF_CTRL);
+ return 0;
+}
+
+static inline void coda9_jpeg_write_qmat_tab(struct coda_dev *dev,
+ u8 *qmat, int index)
+{
+ int i;
+
+ coda_write(dev, index | 0x3, CODA9_REG_JPEG_QMAT_CTRL);
+ for (i = 0; i < 64; i++)
+ coda_write(dev, qmat[i], CODA9_REG_JPEG_QMAT_DATA);
+ coda_write(dev, 0, CODA9_REG_JPEG_QMAT_CTRL);
+}
+
+static void coda9_jpeg_qmat_setup(struct coda_ctx *ctx)
+{
+ struct coda_dev *dev = ctx->dev;
+ int *qmat_index = ctx->params.jpeg_qmat_index;
+ u8 **qmat_tab = ctx->params.jpeg_qmat_tab;
+
+ coda9_jpeg_write_qmat_tab(dev, qmat_tab[qmat_index[0]], 0x00);
+ coda9_jpeg_write_qmat_tab(dev, qmat_tab[qmat_index[1]], 0x40);
+ coda9_jpeg_write_qmat_tab(dev, qmat_tab[qmat_index[2]], 0x80);
+}
+
+static void coda9_jpeg_dec_bbc_gbu_setup(struct coda_ctx *ctx,
+ struct vb2_buffer *buf, u32 ecs_offset)
+{
+ struct coda_dev *dev = ctx->dev;
+ int page_ptr, word_ptr, bit_ptr;
+ u32 bbc_base_addr, end_addr;
+ int bbc_cur_pos;
+ int ret, val;
+
+ bbc_base_addr = vb2_dma_contig_plane_dma_addr(buf, 0);
+ end_addr = bbc_base_addr + vb2_get_plane_payload(buf, 0);
+
+ page_ptr = ecs_offset / 256;
+ word_ptr = (ecs_offset % 256) / 4;
+ if (page_ptr & 1)
+ word_ptr += 64;
+ bit_ptr = (ecs_offset % 4) * 8;
+ if (word_ptr & 1)
+ bit_ptr += 32;
+ word_ptr &= ~0x1;
+
+ coda_write(dev, end_addr, CODA9_REG_JPEG_BBC_WR_PTR);
+ coda_write(dev, bbc_base_addr, CODA9_REG_JPEG_BBC_BAS_ADDR);
+
+ /* Leave 3 256-byte page margin to avoid a BBC interrupt */
+ coda_write(dev, end_addr + 256 * 3 + 256, CODA9_REG_JPEG_BBC_END_ADDR);
+ val = DIV_ROUND_UP(vb2_plane_size(buf, 0), 256) + 3;
+ coda_write(dev, BIT(31) | val, CODA9_REG_JPEG_BBC_STRM_CTRL);
+
+ bbc_cur_pos = page_ptr;
+ coda_write(dev, bbc_cur_pos, CODA9_REG_JPEG_BBC_CUR_POS);
+ coda_write(dev, bbc_base_addr + (bbc_cur_pos << 8),
+ CODA9_REG_JPEG_BBC_EXT_ADDR);
+ coda_write(dev, (bbc_cur_pos & 1) << 6, CODA9_REG_JPEG_BBC_INT_ADDR);
+ coda_write(dev, 64, CODA9_REG_JPEG_BBC_DATA_CNT);
+ coda_write(dev, 0, CODA9_REG_JPEG_BBC_COMMAND);
+ do {
+ ret = coda_read(dev, CODA9_REG_JPEG_BBC_BUSY);
+ } while (ret == 1);
+
+ bbc_cur_pos++;
+ coda_write(dev, bbc_cur_pos, CODA9_REG_JPEG_BBC_CUR_POS);
+ coda_write(dev, bbc_base_addr + (bbc_cur_pos << 8),
+ CODA9_REG_JPEG_BBC_EXT_ADDR);
+ coda_write(dev, (bbc_cur_pos & 1) << 6, CODA9_REG_JPEG_BBC_INT_ADDR);
+ coda_write(dev, 64, CODA9_REG_JPEG_BBC_DATA_CNT);
+ coda_write(dev, 0, CODA9_REG_JPEG_BBC_COMMAND);
+ do {
+ ret = coda_read(dev, CODA9_REG_JPEG_BBC_BUSY);
+ } while (ret == 1);
+
+ bbc_cur_pos++;
+ coda_write(dev, bbc_cur_pos, CODA9_REG_JPEG_BBC_CUR_POS);
+ coda_write(dev, 1, CODA9_REG_JPEG_BBC_CTRL);
+
+ coda_write(dev, 0, CODA9_REG_JPEG_GBU_TT_CNT);
+ coda_write(dev, word_ptr, CODA9_REG_JPEG_GBU_WD_PTR);
+ coda_write(dev, 0, CODA9_REG_JPEG_GBU_BBSR);
+ coda_write(dev, 127, CODA9_REG_JPEG_GBU_BBER);
+ if (page_ptr & 1) {
+ coda_write(dev, 0, CODA9_REG_JPEG_GBU_BBIR);
+ coda_write(dev, 0, CODA9_REG_JPEG_GBU_BBHR);
+ } else {
+ coda_write(dev, 64, CODA9_REG_JPEG_GBU_BBIR);
+ coda_write(dev, 64, CODA9_REG_JPEG_GBU_BBHR);
+ }
+ coda_write(dev, 4, CODA9_REG_JPEG_GBU_CTRL);
+ coda_write(dev, bit_ptr, CODA9_REG_JPEG_GBU_FF_RPTR);
+ coda_write(dev, 3, CODA9_REG_JPEG_GBU_CTRL);
+}
+
static const int bus_req_num[] = {
[CODA9_JPEG_FORMAT_420] = 2,
[CODA9_JPEG_FORMAT_422] = 3,
@@ -345,6 +645,71 @@ out:
#define DC_TABLE_INDEX1 2
#define AC_TABLE_INDEX1 3
+static u8 *coda9_jpeg_get_huff_bits(struct coda_ctx *ctx, int tab_num)
+{
+ struct coda_huff_tab *huff_tab = ctx->params.jpeg_huff_tab;
+
+ if (!huff_tab)
+ return NULL;
+
+ switch (tab_num) {
+ case DC_TABLE_INDEX0: return huff_tab->luma_dc;
+ case AC_TABLE_INDEX0: return huff_tab->luma_ac;
+ case DC_TABLE_INDEX1: return huff_tab->chroma_dc;
+ case AC_TABLE_INDEX1: return huff_tab->chroma_ac;
+ }
+
+ return NULL;
+}
+
+static int coda9_jpeg_gen_dec_huff_tab(struct coda_ctx *ctx, int tab_num)
+{
+ int ptr_cnt = 0, huff_code = 0, zero_flag = 0, data_flag = 0;
+ u8 *huff_bits;
+ s16 *huff_max;
+ s16 *huff_min;
+ s8 *huff_ptr;
+ int ofs;
+ int i;
+
+ huff_bits = coda9_jpeg_get_huff_bits(ctx, tab_num);
+ if (!huff_bits)
+ return -EINVAL;
+
+ /* DC/AC Luma, DC/AC Chroma -> DC Luma/Chroma, AC Luma/Chroma */
+ ofs = ((tab_num & 1) << 1) | ((tab_num >> 1) & 1);
+ ofs *= 16;
+
+ huff_ptr = ctx->params.jpeg_huff_tab->ptr + ofs;
+ huff_max = ctx->params.jpeg_huff_tab->max + ofs;
+ huff_min = ctx->params.jpeg_huff_tab->min + ofs;
+
+ for (i = 0; i < 16; i++) {
+ if (huff_bits[i]) {
+ huff_ptr[i] = ptr_cnt;
+ ptr_cnt += huff_bits[i];
+ huff_min[i] = huff_code;
+ huff_max[i] = huff_code + (huff_bits[i] - 1);
+ data_flag = 1;
+ zero_flag = 0;
+ } else {
+ huff_ptr[i] = -1;
+ huff_min[i] = -1;
+ huff_max[i] = -1;
+ zero_flag = 1;
+ }
+
+ if (data_flag == 1) {
+ if (zero_flag == 1)
+ huff_code <<= 1;
+ else
+ huff_code = (huff_max[i] + 1) << 1;
+ }
+ }
+
+ return 0;
+}
+
static int coda9_jpeg_load_huff_tab(struct coda_ctx *ctx)
{
struct {
@@ -880,6 +1245,13 @@ static void coda9_jpeg_finish_encode(struct coda_ctx *ctx)
coda_dbg(1, ctx, "job finished: encoded frame (%u)%s\n",
dst_buf->sequence,
(dst_buf->flags & V4L2_BUF_FLAG_LAST) ? " (last)" : "");
+
+ /*
+ * Reset JPEG processing unit after each encode run to work
+ * around hangups when switching context between encoder and
+ * decoder.
+ */
+ coda_hw_reset(ctx);
}
static void coda9_jpeg_release(struct coda_ctx *ctx)
@@ -893,6 +1265,7 @@ static void coda9_jpeg_release(struct coda_ctx *ctx)
for (i = 0; i < 3; i++)
kfree(ctx->params.jpeg_qmat_tab[i]);
kfree(ctx->params.jpeg_huff_data);
+ kfree(ctx->params.jpeg_huff_tab);
}
const struct coda_context_ops coda9_jpeg_encode_ops = {
@@ -903,6 +1276,210 @@ const struct coda_context_ops coda9_jpeg_encode_ops = {
.release = coda9_jpeg_release,
};
+/*
+ * Decoder context operations
+ */
+
+static int coda9_jpeg_start_decoding(struct coda_ctx *ctx)
+{
+ ctx->params.jpeg_qmat_index[0] = 0;
+ ctx->params.jpeg_qmat_index[1] = 1;
+ ctx->params.jpeg_qmat_index[2] = 1;
+ ctx->params.jpeg_qmat_tab[0] = luma_q;
+ ctx->params.jpeg_qmat_tab[1] = chroma_q;
+ /* nothing more to do here */
+
+ /* TODO: we could already scan the first header to get the chroma
+ * format.
+ */
+
+ return 0;
+}
+
+static int coda9_jpeg_prepare_decode(struct coda_ctx *ctx)
+{
+ struct coda_dev *dev = ctx->dev;
+ int aligned_width, aligned_height;
+ int chroma_format;
+ int ret;
+ u32 val, dst_fourcc;
+ struct coda_q_data *q_data_src, *q_data_dst;
+ struct vb2_v4l2_buffer *src_buf, *dst_buf;
+ int chroma_interleave;
+
+ src_buf = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
+ q_data_src = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT);
+ q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ dst_fourcc = q_data_dst->fourcc;
+
+ if (vb2_get_plane_payload(&src_buf->vb2_buf, 0) == 0)
+ vb2_set_plane_payload(&src_buf->vb2_buf, 0,
+ vb2_plane_size(&src_buf->vb2_buf, 0));
+
+ chroma_format = coda9_jpeg_chroma_format(q_data_dst->fourcc);
+ if (chroma_format < 0) {
+ v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
+ return chroma_format;
+ }
+
+ ret = coda_jpeg_decode_header(ctx, &src_buf->vb2_buf);
+ if (ret < 0) {
+ v4l2_err(&dev->v4l2_dev, "failed to decode JPEG header: %d\n",
+ ret);
+
+ src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+ v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE);
+
+ v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
+ return ret;
+ }
+
+ /* Round image dimensions to multiple of MCU size */
+ aligned_width = round_up(q_data_src->width, width_align[chroma_format]);
+ aligned_height = round_up(q_data_src->height, height_align[chroma_format]);
+ if (aligned_width != q_data_dst->bytesperline) {
+ v4l2_err(&dev->v4l2_dev, "stride mismatch: %d != %d\n",
+ aligned_width, q_data_dst->bytesperline);
+ }
+
+ coda_set_gdi_regs(ctx);
+
+ val = ctx->params.jpeg_huff_ac_index[0] << 12 |
+ ctx->params.jpeg_huff_ac_index[1] << 11 |
+ ctx->params.jpeg_huff_ac_index[2] << 10 |
+ ctx->params.jpeg_huff_dc_index[0] << 9 |
+ ctx->params.jpeg_huff_dc_index[1] << 8 |
+ ctx->params.jpeg_huff_dc_index[2] << 7;
+ if (ctx->params.jpeg_huff_tab)
+ val |= CODA9_JPEG_PIC_CTRL_USER_HUFFMAN_EN;
+ coda_write(dev, val, CODA9_REG_JPEG_PIC_CTRL);
+
+ coda_write(dev, aligned_width << 16 | aligned_height,
+ CODA9_REG_JPEG_PIC_SIZE);
+
+ chroma_interleave = (dst_fourcc == V4L2_PIX_FMT_NV12);
+ coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO);
+ coda_write(dev, bus_req_num[chroma_format], CODA9_REG_JPEG_OP_INFO);
+ coda_write(dev, mcu_info[chroma_format], CODA9_REG_JPEG_MCU_INFO);
+ coda_write(dev, 0, CODA9_REG_JPEG_SCL_INFO);
+ coda_write(dev, chroma_interleave, CODA9_REG_JPEG_DPB_CONFIG);
+ coda_write(dev, ctx->params.jpeg_restart_interval,
+ CODA9_REG_JPEG_RST_INTVAL);
+
+ if (ctx->params.jpeg_huff_tab) {
+ ret = coda9_jpeg_dec_huff_setup(ctx);
+ if (ret < 0) {
+ v4l2_err(&dev->v4l2_dev,
+ "failed to set up Huffman tables: %d\n", ret);
+ v4l2_m2m_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx);
+ return ret;
+ }
+ }
+
+ coda9_jpeg_qmat_setup(ctx);
+
+ coda9_jpeg_dec_bbc_gbu_setup(ctx, &src_buf->vb2_buf,
+ ctx->jpeg_ecs_offset);
+
+ coda_write(dev, 0, CODA9_REG_JPEG_RST_INDEX);
+ coda_write(dev, 0, CODA9_REG_JPEG_RST_COUNT);
+
+ coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_Y);
+ coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_CB);
+ coda_write(dev, 0, CODA9_REG_JPEG_DPCM_DIFF_CR);
+
+ coda_write(dev, 0, CODA9_REG_JPEG_ROT_INFO);
+
+ coda_write(dev, 1, CODA9_GDI_CONTROL);
+ do {
+ ret = coda_read(dev, CODA9_GDI_STATUS);
+ } while (!ret);
+
+ val = (chroma_format << 17) | (chroma_interleave << 16) |
+ q_data_dst->bytesperline;
+ if (ctx->tiled_map_type == GDI_TILED_FRAME_MB_RASTER_MAP)
+ val |= 3 << 20;
+ coda_write(dev, val, CODA9_GDI_INFO_CONTROL);
+
+ coda_write(dev, aligned_width << 16 | aligned_height,
+ CODA9_GDI_INFO_PIC_SIZE);
+
+ coda_write_base(ctx, q_data_dst, dst_buf, CODA9_GDI_INFO_BASE_Y);
+
+ coda_write(dev, 0, CODA9_REG_JPEG_DPB_BASE00);
+ coda_write(dev, 0, CODA9_GDI_CONTROL);
+ coda_write(dev, 1, CODA9_GDI_PIC_INIT_HOST);
+
+ trace_coda_jpeg_run(ctx, src_buf);
+
+ coda_write(dev, 1, CODA9_REG_JPEG_PIC_START);
+
+ return 0;
+}
+
+static void coda9_jpeg_finish_decode(struct coda_ctx *ctx)
+{
+ struct coda_dev *dev = ctx->dev;
+ struct vb2_v4l2_buffer *dst_buf, *src_buf;
+ struct coda_q_data *q_data_dst;
+ u32 err_mb;
+
+ err_mb = coda_read(dev, CODA9_REG_JPEG_PIC_ERRMB);
+ if (err_mb)
+ v4l2_err(&dev->v4l2_dev, "ERRMB: 0x%x\n", err_mb);
+
+ coda_write(dev, 0, CODA9_REG_JPEG_BBC_FLUSH_CMD);
+
+ /*
+ * Lock to make sure that a decoder stop command running in parallel
+ * will either already have marked src_buf as last, or it will wake up
+ * the capture queue after the buffers are returned.
+ */
+ mutex_lock(&ctx->wakeup_mutex);
+ src_buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
+ dst_buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
+ dst_buf->sequence = ctx->osequence++;
+
+ trace_coda_jpeg_done(ctx, dst_buf);
+
+ dst_buf->flags &= ~(V4L2_BUF_FLAG_PFRAME | V4L2_BUF_FLAG_LAST);
+ dst_buf->flags |= V4L2_BUF_FLAG_KEYFRAME;
+ dst_buf->flags |= src_buf->flags & V4L2_BUF_FLAG_LAST;
+
+ v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, false);
+
+ q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ vb2_set_plane_payload(&dst_buf->vb2_buf, 0, q_data_dst->sizeimage);
+
+ v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE);
+ coda_m2m_buf_done(ctx, dst_buf, err_mb ? VB2_BUF_STATE_ERROR :
+ VB2_BUF_STATE_DONE);
+
+ mutex_unlock(&ctx->wakeup_mutex);
+
+ coda_dbg(1, ctx, "job finished: decoded frame (%u)%s\n",
+ dst_buf->sequence,
+ (dst_buf->flags & V4L2_BUF_FLAG_LAST) ? " (last)" : "");
+
+ /*
+ * Reset JPEG processing unit after each decode run to work
+ * around hangups when switching context between encoder and
+ * decoder.
+ */
+ coda_hw_reset(ctx);
+}
+
+const struct coda_context_ops coda9_jpeg_decode_ops = {
+ .queue_init = coda_encoder_queue_init, /* non-bitstream operation */
+ .start_streaming = coda9_jpeg_start_decoding,
+ .prepare_run = coda9_jpeg_prepare_decode,
+ .finish_run = coda9_jpeg_finish_decode,
+ .release = coda9_jpeg_release,
+};
+
irqreturn_t coda9_jpeg_irq_handler(int irq, void *data)
{
struct coda_dev *dev = data;