From ec25f68d534798e4bc98b6c115757956422b2e45 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Fri, 20 Jul 2012 08:54:29 -0300 Subject: [media] media: coda: allocate internal framebuffers separately from v4l2 buffers Some codecs running on CODA need internal framebuffers for reference and reconstructed frames. Allocate them separately, and do not use the input vb2_buffers: those will be handed off to userspace regularly, and there is no way to signal to the CODA which of the registered framebuffers are off limits. As a consequence, userspace is now free to choose the number of v4l2 buffers. This patch also includes the code to set up the parameter buffer for CODA7 and above with 64-bit AXI bus width. Signed-off-by: Philipp Zabel Reviewed-by: Javier Martin Tested-by: Javier Martin Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/coda.c | 141 ++++++++++++++++++++++++++---------------- 1 file changed, 86 insertions(+), 55 deletions(-) (limited to 'drivers') diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c index 53816d045c84..9223693b9a8d 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/coda.c @@ -45,8 +45,7 @@ #define CODA_ISRAM_SIZE (2048 * 2) #define CODA7_IRAM_SIZE 0x14000 /* 81920 bytes */ -#define CODA_OUTPUT_BUFS 4 -#define CODA_CAPTURE_BUFS 2 +#define CODA_MAX_FRAMEBUFFERS 2 #define MAX_W 720 #define MAX_H 576 @@ -164,11 +163,12 @@ struct coda_ctx { struct v4l2_m2m_ctx *m2m_ctx; struct v4l2_ctrl_handler ctrls; struct v4l2_fh fh; - struct vb2_buffer *reference; int gopcounter; char vpu_header[3][64]; int vpu_header_size[3]; struct coda_aux_buf parabuf; + struct coda_aux_buf internal_frames[CODA_MAX_FRAMEBUFFERS]; + int num_internal_frames; int idx; }; @@ -743,14 +743,6 @@ static int coda_job_ready(void *m2m_priv) return 0; } - /* For P frames a reference picture is needed too */ - if ((ctx->gopcounter != (ctx->params.gop_size - 1)) && - !ctx->reference) { - v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, - "not ready: reference picture not available.\n"); - return 0; - } - if (coda_isbusy(ctx->dev)) { v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "not ready: coda is still busy.\n"); @@ -804,7 +796,6 @@ static void set_default_params(struct coda_ctx *ctx) ctx->params.codec_mode = CODA_MODE_INVALID; ctx->colorspace = V4L2_COLORSPACE_REC709; ctx->params.framerate = 30; - ctx->reference = NULL; ctx->aborting = 0; /* Default formats for output and input queues */ @@ -830,7 +821,6 @@ static int coda_queue_setup(struct vb2_queue *vq, unsigned int size; if (vq->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { - *nbuffers = CODA_OUTPUT_BUFS; if (fmt) size = fmt->fmt.pix.width * fmt->fmt.pix.height * 3 / 2; @@ -838,7 +828,6 @@ static int coda_queue_setup(struct vb2_queue *vq, size = MAX_W * MAX_H * 3 / 2; } else { - *nbuffers = CODA_CAPTURE_BUFS; size = CODA_MAX_FRAME_SIZE; } @@ -891,6 +880,77 @@ static void coda_wait_finish(struct vb2_queue *q) coda_lock(ctx); } +static void coda_free_framebuffers(struct coda_ctx *ctx) +{ + int i; + + for (i = 0; i < CODA_MAX_FRAMEBUFFERS; i++) { + if (ctx->internal_frames[i].vaddr) { + dma_free_coherent(&ctx->dev->plat_dev->dev, + ctx->internal_frames[i].size, + ctx->internal_frames[i].vaddr, + ctx->internal_frames[i].paddr); + ctx->internal_frames[i].vaddr = NULL; + } + } +} + +static int coda_alloc_framebuffers(struct coda_ctx *ctx, struct coda_q_data *q_data, u32 fourcc) +{ + struct coda_dev *dev = ctx->dev; + + int height = q_data->height; + int width = q_data->width; + u32 *p; + int i; + + /* Allocate frame buffers */ + ctx->num_internal_frames = CODA_MAX_FRAMEBUFFERS; + for (i = 0; i < ctx->num_internal_frames; i++) { + ctx->internal_frames[i].size = q_data->sizeimage; + if (fourcc == V4L2_PIX_FMT_H264 && dev->devtype->product != CODA_DX6) + ctx->internal_frames[i].size += width / 2 * height / 2; + ctx->internal_frames[i].vaddr = dma_alloc_coherent( + &dev->plat_dev->dev, ctx->internal_frames[i].size, + &ctx->internal_frames[i].paddr, GFP_KERNEL); + if (!ctx->internal_frames[i].vaddr) { + coda_free_framebuffers(ctx); + return -ENOMEM; + } + } + + /* Register frame buffers in the parameter buffer */ + p = ctx->parabuf.vaddr; + + if (dev->devtype->product == CODA_DX6) { + for (i = 0; i < ctx->num_internal_frames; i++) { + p[i * 3] = ctx->internal_frames[i].paddr; /* Y */ + p[i * 3 + 1] = p[i * 3] + width * height; /* Cb */ + p[i * 3 + 2] = p[i * 3 + 1] + width / 2 * height / 2; /* Cr */ + } + } else { + for (i = 0; i < ctx->num_internal_frames; i += 2) { + p[i * 3 + 1] = ctx->internal_frames[i].paddr; /* Y */ + p[i * 3] = p[i * 3 + 1] + width * height; /* Cb */ + p[i * 3 + 3] = p[i * 3] + (width / 2) * (height / 2); /* Cr */ + + if (fourcc == V4L2_PIX_FMT_H264) + p[96 + i + 1] = p[i * 3 + 3] + (width / 2) * (height / 2); + + if (i + 1 < ctx->num_internal_frames) { + p[i * 3 + 2] = ctx->internal_frames[i+1].paddr; /* Y */ + p[i * 3 + 5] = p[i * 3 + 2] + width * height ; /* Cb */ + p[i * 3 + 4] = p[i * 3 + 5] + (width / 2) * (height / 2); /* Cr */ + + if (fourcc == V4L2_PIX_FMT_H264) + p[96 + i] = p[i * 3 + 4] + (width / 2) * (height / 2); + } + } + } + + return 0; +} + static int coda_start_streaming(struct vb2_queue *q, unsigned int count) { struct coda_ctx *ctx = vb2_get_drv_priv(q); @@ -898,11 +958,10 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count) u32 bitstream_buf, bitstream_size; struct coda_dev *dev = ctx->dev; struct coda_q_data *q_data_src, *q_data_dst; - u32 dst_fourcc; struct vb2_buffer *buf; - struct vb2_queue *src_vq; + u32 dst_fourcc; u32 value; - int i = 0; + int ret; if (count < 1) return -EINVAL; @@ -1050,25 +1109,11 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count) if (coda_read(dev, CODA_RET_ENC_SEQ_SUCCESS) == 0) return -EFAULT; - /* - * Walk the src buffer list and let the codec know the - * addresses of the pictures. - */ - src_vq = v4l2_m2m_get_vq(ctx->m2m_ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT); - for (i = 0; i < src_vq->num_buffers; i++) { - u32 *p; - - buf = src_vq->bufs[i]; - p = ctx->parabuf.vaddr; - - p[i * 3] = vb2_dma_contig_plane_dma_addr(buf, 0); - p[i * 3 + 1] = p[i * 3] + q_data_src->width * - q_data_src->height; - p[i * 3 + 2] = p[i * 3 + 1] + q_data_src->width / 2 * - q_data_src->height / 2; - } + ret = coda_alloc_framebuffers(ctx, q_data_src, dst_fourcc); + if (ret < 0) + return ret; - coda_write(dev, src_vq->num_buffers, CODA_CMD_SET_FRAME_BUF_NUM); + coda_write(dev, ctx->num_internal_frames, CODA_CMD_SET_FRAME_BUF_NUM); coda_write(dev, round_up(q_data_src->width, 8), CODA_CMD_SET_FRAME_BUF_STRIDE); if (dev->devtype->product != CODA_DX6) { coda_write(dev, round_up(q_data_src->width, 8), CODA7_CMD_SET_FRAME_SOURCE_BUF_STRIDE); @@ -1191,6 +1236,8 @@ static int coda_stop_streaming(struct vb2_queue *q) "CODA_COMMAND_SEQ_END failed\n"); return -ETIMEDOUT; } + + coda_free_framebuffers(ctx); } return 0; @@ -1437,7 +1484,7 @@ static const struct v4l2_file_operations coda_fops = { static irqreturn_t coda_irq_handler(int irq, void *data) { - struct vb2_buffer *src_buf, *dst_buf, *tmp_buf; + struct vb2_buffer *src_buf, *dst_buf; struct coda_dev *dev = data; u32 wr_ptr, start_ptr; struct coda_ctx *ctx; @@ -1465,8 +1512,8 @@ static irqreturn_t coda_irq_handler(int irq, void *data) return IRQ_NONE; } - src_buf = v4l2_m2m_next_src_buf(ctx->m2m_ctx); - dst_buf = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); + src_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); + dst_buf = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); /* Get results from the coda */ coda_read(dev, CODA_RET_ENC_PIC_TYPE); @@ -1496,23 +1543,7 @@ static irqreturn_t coda_irq_handler(int irq, void *data) dst_buf->v4l2_buf.flags &= ~V4L2_BUF_FLAG_KEYFRAME; } - /* Free previous reference picture if available */ - if (ctx->reference) { - v4l2_m2m_buf_done(ctx->reference, VB2_BUF_STATE_DONE); - ctx->reference = NULL; - } - - /* - * For the last frame of the gop we don't need to save - * a reference picture. - */ - v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); - tmp_buf = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); - if (ctx->gopcounter == 0) - v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE); - else - ctx->reference = tmp_buf; - + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE); v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE); ctx->gopcounter--; -- cgit v1.2.3