// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) STMicroelectronics SA 2014 * Authors: Fabien Dessenne for STMicroelectronics. */ #include #include #include #include #include #include #include #include #include #include "bdisp.h" #define BDISP_MAX_CTRL_NUM 10 #define BDISP_WORK_TIMEOUT ((100 * HZ) / 1000) /* User configuration change */ #define BDISP_PARAMS BIT(0) /* Config updated */ #define BDISP_SRC_FMT BIT(1) /* Source set */ #define BDISP_DST_FMT BIT(2) /* Destination set */ #define BDISP_CTX_STOP_REQ BIT(3) /* Stop request */ #define BDISP_CTX_ABORT BIT(4) /* Abort while device run */ #define BDISP_MIN_W 1 #define BDISP_MAX_W 8191 #define BDISP_MIN_H 1 #define BDISP_MAX_H 8191 #define fh_to_ctx(__fh) container_of(__fh, struct bdisp_ctx, fh) enum bdisp_dev_flags { ST_M2M_OPEN, /* Driver opened */ ST_M2M_RUNNING, /* HW device running */ ST_M2M_SUSPENDED, /* Driver suspended */ ST_M2M_SUSPENDING, /* Driver being suspended */ }; static const struct bdisp_fmt bdisp_formats[] = { /* ARGB888. [31:0] A:R:G:B 8:8:8:8 little endian */ { .pixelformat = V4L2_PIX_FMT_ABGR32, /* is actually ARGB */ .nb_planes = 1, .bpp = 32, .bpp_plane0 = 32, .w_align = 1, .h_align = 1 }, /* XRGB888. [31:0] x:R:G:B 8:8:8:8 little endian */ { .pixelformat = V4L2_PIX_FMT_XBGR32, /* is actually xRGB */ .nb_planes = 1, .bpp = 32, .bpp_plane0 = 32, .w_align = 1, .h_align = 1 }, /* RGB565. [15:0] R:G:B 5:6:5 little endian */ { .pixelformat = V4L2_PIX_FMT_RGB565, .nb_planes = 1, .bpp = 16, .bpp_plane0 = 16, .w_align = 1, .h_align = 1 }, /* NV12. YUV420SP - 1 plane for Y + 1 plane for (CbCr) */ { .pixelformat = V4L2_PIX_FMT_NV12, .nb_planes = 2, .bpp = 12, .bpp_plane0 = 8, .w_align = 2, .h_align = 2 }, /* RGB888. [23:0] B:G:R 8:8:8 little endian */ { .pixelformat = V4L2_PIX_FMT_RGB24, .nb_planes = 1, .bpp = 24, .bpp_plane0 = 24, .w_align = 1, .h_align = 1 }, /* YU12. YUV420P - 1 plane for Y + 1 plane for Cb + 1 plane for Cr * To keep as the LAST element of this table (no support on capture) */ { .pixelformat = V4L2_PIX_FMT_YUV420, .nb_planes = 3, .bpp = 12, .bpp_plane0 = 8, .w_align = 2, .h_align = 2 } }; /* Default format : HD ARGB32*/ #define BDISP_DEF_WIDTH 1920 #define BDISP_DEF_HEIGHT 1080 static const struct bdisp_frame bdisp_dflt_fmt = { .width = BDISP_DEF_WIDTH, .height = BDISP_DEF_HEIGHT, .fmt = &bdisp_formats[0], .field = V4L2_FIELD_NONE, .bytesperline = BDISP_DEF_WIDTH * 4, .sizeimage = BDISP_DEF_WIDTH * BDISP_DEF_HEIGHT * 4, .colorspace = V4L2_COLORSPACE_REC709, .crop = {0, 0, BDISP_DEF_WIDTH, BDISP_DEF_HEIGHT}, .paddr = {0, 0, 0, 0} }; static inline void bdisp_ctx_state_lock_set(u32 state, struct bdisp_ctx *ctx) { unsigned long flags; spin_lock_irqsave(&ctx->bdisp_dev->slock, flags); ctx->state |= state; spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags); } static inline void bdisp_ctx_state_lock_clear(u32 state, struct bdisp_ctx *ctx) { unsigned long flags; spin_lock_irqsave(&ctx->bdisp_dev->slock, flags); ctx->state &= ~state; spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags); } static inline bool bdisp_ctx_state_is_set(u32 mask, struct bdisp_ctx *ctx) { unsigned long flags; bool ret; spin_lock_irqsave(&ctx->bdisp_dev->slock, flags); ret = (ctx->state & mask) == mask; spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags); return ret; } static const struct bdisp_fmt *bdisp_find_fmt(u32 pixelformat) { const struct bdisp_fmt *fmt; unsigned int i; for (i = 0; i < ARRAY_SIZE(bdisp_formats); i++) { fmt = &bdisp_formats[i]; if (fmt->pixelformat == pixelformat) return fmt; } return NULL; } static struct bdisp_frame *ctx_get_frame(struct bdisp_ctx *ctx, enum v4l2_buf_type type) { switch (type) { case V4L2_BUF_TYPE_VIDEO_OUTPUT: return &ctx->src; case V4L2_BUF_TYPE_VIDEO_CAPTURE: return &ctx->dst; default: dev_err(ctx->bdisp_dev->dev, "Wrong buffer/video queue type (%d)\n", type); break; } return ERR_PTR(-EINVAL); } static void bdisp_job_finish(struct bdisp_ctx *ctx, int vb_state) { struct vb2_v4l2_buffer *src_vb, *dst_vb; if (WARN(!ctx || !ctx->fh.m2m_ctx, "Null hardware context\n")) return; dev_dbg(ctx->bdisp_dev->dev, "%s\n", __func__); src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); if (src_vb && dst_vb) { dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp; dst_vb->timecode = src_vb->timecode; dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; dst_vb->flags |= src_vb->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; v4l2_m2m_buf_done(src_vb, vb_state); v4l2_m2m_buf_done(dst_vb, vb_state); v4l2_m2m_job_finish(ctx->bdisp_dev->m2m.m2m_dev, ctx->fh.m2m_ctx); } } static int bdisp_ctx_stop_req(struct bdisp_ctx *ctx) { struct bdisp_ctx *curr_ctx; struct bdisp_dev *bdisp = ctx->bdisp_dev; int ret; dev_dbg(ctx->bdisp_dev->dev, "%s\n", __func__); cancel_delayed_work(&bdisp->timeout_work); curr_ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev); if (!test_bit(ST_M2M_RUNNING, &bdisp->state) || (curr_ctx != ctx)) return 0; bdisp_ctx_state_lock_set(BDISP_CTX_STOP_REQ, ctx); ret = wait_event_timeout(bdisp->irq_queue, !bdisp_ctx_state_is_set(BDISP_CTX_STOP_REQ, ctx), BDISP_WORK_TIMEOUT); if (!ret) { dev_err(ctx->bdisp_dev->dev, "%s IRQ timeout\n", __func__); return -ETIMEDOUT; } return 0; } static void __bdisp_job_abort(struct bdisp_ctx *ctx) { int ret; ret = bdisp_ctx_stop_req(ctx); if ((ret == -ETIMEDOUT) || (ctx->state & BDISP_CTX_ABORT)) { bdisp_ctx_state_lock_clear(BDISP_CTX_STOP_REQ | BDISP_CTX_ABORT, ctx); bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR); } } static void bdisp_job_abort(void *priv) { __bdisp_job_abort((struct bdisp_ctx *)priv); } static int bdisp_get_addr(struct bdisp_ctx *ctx, struct vb2_buffer *vb, struct bdisp_frame *frame, dma_addr_t *paddr) { if (!vb || !frame) return -EINVAL; paddr[0] = vb2_dma_contig_plane_dma_addr(vb, 0); if (frame->fmt->nb_planes > 1) /* UV (NV12) or U (420P) */ paddr[1] = (dma_addr_t)(paddr[0] + frame->bytesperline * frame->height); if (frame->fmt->nb_planes > 2) /* V (420P) */ paddr[2] = (dma_addr_t)(paddr[1] + (frame->bytesperline * frame->height) / 4); if (frame->fmt->nb_planes > 3) dev_dbg(ctx->bdisp_dev->dev, "ignoring some planes\n"); dev_dbg(ctx->bdisp_dev->dev, "%s plane[0]=%pad plane[1]=%pad plane[2]=%pad\n", __func__, &paddr[0], &paddr[1], &paddr[2]); return 0; } static int bdisp_get_bufs(struct bdisp_ctx *ctx) { struct bdisp_frame *src, *dst; struct vb2_v4l2_buffer *src_vb, *dst_vb; int ret; src = &ctx->src; dst = &ctx->dst; src_vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); ret = bdisp_get_addr(ctx, &src_vb->vb2_buf, src, src->paddr); if (ret) return ret; dst_vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); ret = bdisp_get_addr(ctx, &dst_vb->vb2_buf, dst, dst->paddr); if (ret) return ret; dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp; return 0; } static void bdisp_device_run(void *priv) { struct bdisp_ctx *ctx = priv; struct bdisp_dev *bdisp; unsigned long flags; int err = 0; if (WARN(!ctx, "Null hardware context\n")) return; bdisp = ctx->bdisp_dev; dev_dbg(bdisp->dev, "%s\n", __func__); spin_lock_irqsave(&bdisp->slock, flags); if (bdisp->m2m.ctx != ctx) { dev_dbg(bdisp->dev, "ctx updated: %p -> %p\n", bdisp->m2m.ctx, ctx); ctx->state |= BDISP_PARAMS; bdisp->m2m.ctx = ctx; } if (ctx->state & BDISP_CTX_STOP_REQ) { ctx->state &= ~BDISP_CTX_STOP_REQ; ctx->state |= BDISP_CTX_ABORT; wake_up(&bdisp->irq_queue); goto out; } err = bdisp_get_bufs(ctx); if (err) { dev_err(bdisp->dev, "cannot get address\n"); goto out; } bdisp_dbg_perf_begin(bdisp); err = bdisp_hw_reset(bdisp); if (err) { dev_err(bdisp->dev, "could not get HW ready\n"); goto out; } err = bdisp_hw_update(ctx); if (err) { dev_err(bdisp->dev, "could not send HW request\n"); goto out; } queue_delayed_work(bdisp->work_queue, &bdisp->timeout_work, BDISP_WORK_TIMEOUT); set_bit(ST_M2M_RUNNING, &bdisp->state); out: ctx->state &= ~BDISP_PARAMS; spin_unlock_irqrestore(&bdisp->slock, flags); if (err) bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR); } static const struct v4l2_m2m_ops bdisp_m2m_ops = { .device_run = bdisp_device_run, .job_abort = bdisp_job_abort, }; static int __bdisp_s_ctrl(struct bdisp_ctx *ctx, struct v4l2_ctrl *ctrl) { if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) return 0; switch (ctrl->id) { case V4L2_CID_HFLIP: ctx->hflip = ctrl->val; break; case V4L2_CID_VFLIP: ctx->vflip = ctrl->val; break; default: dev_err(ctx->bdisp_dev->dev, "unknown control %d\n", ctrl->id); return -EINVAL; } ctx->state |= BDISP_PARAMS; return 0; } static int bdisp_s_ctrl(struct v4l2_ctrl *ctrl) { struct bdisp_ctx *ctx = container_of(ctrl->handler, struct bdisp_ctx, ctrl_handler); unsigned long flags; int ret; spin_lock_irqsave(&ctx->bdisp_dev->slock, flags); ret = __bdisp_s_ctrl(ctx, ctrl); spin_unlock_irqrestore(&ctx->bdisp_dev->slock, flags); return ret; } static const struct v4l2_ctrl_ops bdisp_c_ops = { .s_ctrl = bdisp_s_ctrl, }; static int bdisp_ctrls_create(struct bdisp_ctx *ctx) { if (ctx->ctrls_rdy) return 0; v4l2_ctrl_handler_init(&ctx->ctrl_handler, BDISP_MAX_CTRL_NUM); ctx->bdisp_ctrls.hflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &bdisp_c_ops, V4L2_CID_HFLIP, 0, 1, 1, 0); ctx->bdisp_ctrls.vflip = v4l2_ctrl_new_std(&ctx->ctrl_handler, &bdisp_c_ops, V4L2_CID_VFLIP, 0, 1, 1, 0); if (ctx->ctrl_handler.error) { int err = ctx->ctrl_handler.error; v4l2_ctrl_handler_free(&ctx->ctrl_handler); return err; } ctx->ctrls_rdy = true; return 0; } static void bdisp_ctrls_delete(struct bdisp_ctx *ctx) { if (ctx->ctrls_rdy) { v4l2_ctrl_handler_free(&ctx->ctrl_handler); ctx->ctrls_rdy = false; } } static int bdisp_queue_setup(struct vb2_queue *vq, unsigned int *nb_buf, unsigned int *nb_planes, unsigned int sizes[], struct device *alloc_devs[]) { struct bdisp_ctx *ctx = vb2_get_drv_priv(vq); struct bdisp_frame *frame = ctx_get_frame(ctx, vq->type); if (IS_ERR(frame)) { dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); return PTR_ERR(frame); } if (!frame->fmt) { dev_err(ctx->bdisp_dev->dev, "Invalid format\n"); return -EINVAL; } if (*nb_planes) return sizes[0] < frame->sizeimage ? -EINVAL : 0; *nb_planes = 1; sizes[0] = frame->sizeimage; return 0; } static int bdisp_buf_prepare(struct vb2_buffer *vb) { struct bdisp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); struct bdisp_frame *frame = ctx_get_frame(ctx, vb->vb2_queue->type); if (IS_ERR(frame)) { dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); return PTR_ERR(frame); } if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) vb2_set_plane_payload(vb, 0, frame->sizeimage); return 0; } static void bdisp_buf_queue(struct vb2_buffer *vb) { struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); struct bdisp_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); /* return to V4L2 any 0-size buffer so it can be dequeued by user */ if (!vb2_get_plane_payload(vb, 0)) { dev_dbg(ctx->bdisp_dev->dev, "0 data buffer, skip it\n"); vb2_buffer_done(vb, VB2_BUF_STATE_DONE); return; } if (ctx->fh.m2m_ctx) v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf); } static int bdisp_start_streaming(struct vb2_queue *q, unsigned int count) { struct bdisp_ctx *ctx = q->drv_priv; struct vb2_v4l2_buffer *buf; int ret = pm_runtime_get_sync(ctx->bdisp_dev->dev); if (ret < 0) { dev_err(ctx->bdisp_dev->dev, "failed to set runtime PM\n"); if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) { while ((buf = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx))) v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED); } else { while ((buf = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx))) v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED); } return ret; } return 0; } static void bdisp_stop_streaming(struct vb2_queue *q) { struct bdisp_ctx *ctx = q->drv_priv; __bdisp_job_abort(ctx); pm_runtime_put(ctx->bdisp_dev->dev); } static const struct vb2_ops bdisp_qops = { .queue_setup = bdisp_queue_setup, .buf_prepare = bdisp_buf_prepare, .buf_queue = bdisp_buf_queue, .wait_prepare = vb2_ops_wait_prepare, .wait_finish = vb2_ops_wait_finish, .stop_streaming = bdisp_stop_streaming, .start_streaming = bdisp_start_streaming, }; static int queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) { struct bdisp_ctx *ctx = priv; int ret; memset(src_vq, 0, sizeof(*src_vq)); src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT; src_vq->io_modes = VB2_MMAP | VB2_DMABUF; src_vq->drv_priv = ctx; src_vq->ops = &bdisp_qops; src_vq->mem_ops = &vb2_dma_contig_memops; src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; src_vq->lock = &ctx->bdisp_dev->lock; src_vq->dev = ctx->bdisp_dev->v4l2_dev.dev; ret = vb2_queue_init(src_vq); if (ret) return ret; memset(dst_vq, 0, sizeof(*dst_vq)); dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; dst_vq->drv_priv = ctx; dst_vq->ops = &bdisp_qops; dst_vq->mem_ops = &vb2_dma_contig_memops; dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; dst_vq->lock = &ctx->bdisp_dev->lock; dst_vq->dev = ctx->bdisp_dev->v4l2_dev.dev; return vb2_queue_init(dst_vq); } static int bdisp_open(struct file *file) { struct bdisp_dev *bdisp = video_drvdata(file); struct bdisp_ctx *ctx = NULL; int ret; if (mutex_lock_interruptible(&bdisp->lock)) return -ERESTARTSYS; /* Allocate memory for both context and node */ ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) { ret = -ENOMEM; goto unlock; } ctx->bdisp_dev = bdisp; if (bdisp_hw_alloc_nodes(ctx)) { dev_err(bdisp->dev, "no memory for nodes\n"); ret = -ENOMEM; goto mem_ctx; } v4l2_fh_init(&ctx->fh, bdisp->m2m.vdev); ret = bdisp_ctrls_create(ctx); if (ret) { dev_err(bdisp->dev, "Failed to create control\n"); goto error_fh; } /* Use separate control handler per file handle */ ctx->fh.ctrl_handler = &ctx->ctrl_handler; file->private_data = &ctx->fh; v4l2_fh_add(&ctx->fh); /* Default format */ ctx->src = bdisp_dflt_fmt; ctx->dst = bdisp_dflt_fmt; /* Setup the device context for mem2mem mode. */ ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(bdisp->m2m.m2m_dev, ctx, queue_init); if (IS_ERR(ctx->fh.m2m_ctx)) { dev_err(bdisp->dev, "Failed to initialize m2m context\n"); ret = PTR_ERR(ctx->fh.m2m_ctx); goto error_ctrls; } bdisp->m2m.refcnt++; set_bit(ST_M2M_OPEN, &bdisp->state); dev_dbg(bdisp->dev, "driver opened, ctx = 0x%p\n", ctx); mutex_unlock(&bdisp->lock); return 0; error_ctrls: bdisp_ctrls_delete(ctx); v4l2_fh_del(&ctx->fh); error_fh: v4l2_fh_exit(&ctx->fh); bdisp_hw_free_nodes(ctx); mem_ctx: kfree(ctx); unlock: mutex_unlock(&bdisp->lock); return ret; } static int bdisp_release(struct file *file) { struct bdisp_ctx *ctx = fh_to_ctx(file->private_data); struct bdisp_dev *bdisp = ctx->bdisp_dev; dev_dbg(bdisp->dev, "%s\n", __func__); mutex_lock(&bdisp->lock); v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); bdisp_ctrls_delete(ctx); v4l2_fh_del(&ctx->fh); v4l2_fh_exit(&ctx->fh); if (--bdisp->m2m.refcnt <= 0) clear_bit(ST_M2M_OPEN, &bdisp->state); bdisp_hw_free_nodes(ctx); kfree(ctx); mutex_unlock(&bdisp->lock); return 0; } static const struct v4l2_file_operations bdisp_fops = { .owner = THIS_MODULE, .open = bdisp_open, .release = bdisp_release, .poll = v4l2_m2m_fop_poll, .unlocked_ioctl = video_ioctl2, .mmap = v4l2_m2m_fop_mmap, }; static int bdisp_querycap(struct file *file, void *fh, struct v4l2_capability *cap) { struct bdisp_ctx *ctx = fh_to_ctx(fh); struct bdisp_dev *bdisp = ctx->bdisp_dev; strlcpy(cap->driver, bdisp->pdev->name, sizeof(cap->driver)); strlcpy(cap->card, bdisp->pdev->name, sizeof(cap->card)); snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s%d", BDISP_NAME, bdisp->id); cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M; cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; } static int bdisp_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f) { struct bdisp_ctx *ctx = fh_to_ctx(fh); const struct bdisp_fmt *fmt; if (f->index >= ARRAY_SIZE(bdisp_formats)) return -EINVAL; fmt = &bdisp_formats[f->index]; if ((fmt->pixelformat == V4L2_PIX_FMT_YUV420) && (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)) { dev_dbg(ctx->bdisp_dev->dev, "No YU12 on capture\n"); return -EINVAL; } f->pixelformat = fmt->pixelformat; return 0; } static int bdisp_g_fmt(struct file *file, void *fh, struct v4l2_format *f) { struct bdisp_ctx *ctx = fh_to_ctx(fh); struct v4l2_pix_format *pix; struct bdisp_frame *frame = ctx_get_frame(ctx, f->type); if (IS_ERR(frame)) { dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); return PTR_ERR(frame); } pix = &f->fmt.pix; pix->width = frame->width; pix->height = frame->height; pix->pixelformat = frame->fmt->pixelformat; pix->field = frame->field; pix->bytesperline = frame->bytesperline; pix->sizeimage = frame->sizeimage; pix->colorspace = (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ? frame->colorspace : bdisp_dflt_fmt.colorspace; return 0; } static int bdisp_try_fmt(struct file *file, void *fh, struct v4l2_format *f) { struct bdisp_ctx *ctx = fh_to_ctx(fh); struct v4l2_pix_format *pix = &f->fmt.pix; const struct bdisp_fmt *format; u32 in_w, in_h; format = bdisp_find_fmt(pix->pixelformat); if (!format) { dev_dbg(ctx->bdisp_dev->dev, "Unknown format 0x%x\n", pix->pixelformat); return -EINVAL; } /* YUV420P only supported for VIDEO_OUTPUT */ if ((format->pixelformat == V4L2_PIX_FMT_YUV420) && (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)) { dev_dbg(ctx->bdisp_dev->dev, "No YU12 on capture\n"); return -EINVAL; } /* Field (interlaced only supported on OUTPUT) */ if ((f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) || (pix->field != V4L2_FIELD_INTERLACED)) pix->field = V4L2_FIELD_NONE; /* Adjust width & height */ in_w = pix->width; in_h = pix->height; v4l_bound_align_image(&pix->width, BDISP_MIN_W, BDISP_MAX_W, ffs(format->w_align) - 1, &pix->height, BDISP_MIN_H, BDISP_MAX_H, ffs(format->h_align) - 1, 0); if ((pix->width != in_w) || (pix->height != in_h)) dev_dbg(ctx->bdisp_dev->dev, "%s size updated: %dx%d -> %dx%d\n", __func__, in_w, in_h, pix->width, pix->height); pix->bytesperline = (pix->width * format->bpp_plane0) / 8; pix->sizeimage = (pix->width * pix->height * format->bpp) / 8; if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) pix->colorspace = bdisp_dflt_fmt.colorspace; return 0; } static int bdisp_s_fmt(struct file *file, void *fh, struct v4l2_format *f) { struct bdisp_ctx *ctx = fh_to_ctx(fh); struct vb2_queue *vq; struct bdisp_frame *frame; struct v4l2_pix_format *pix; int ret; u32 state; ret = bdisp_try_fmt(file, fh, f); if (ret) { dev_err(ctx->bdisp_dev->dev, "Cannot set format\n"); return ret; } vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type); if (vb2_is_streaming(vq)) { dev_err(ctx->bdisp_dev->dev, "queue (%d) busy\n", f->type); return -EBUSY; } frame = (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ? &ctx->src : &ctx->dst; pix = &f->fmt.pix; frame->fmt = bdisp_find_fmt(pix->pixelformat); if (!frame->fmt) { dev_err(ctx->bdisp_dev->dev, "Unknown format 0x%x\n", pix->pixelformat); return -EINVAL; } frame->width = pix->width; frame->height = pix->height; frame->bytesperline = pix->bytesperline; frame->sizeimage = pix->sizeimage; frame->field = pix->field; if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) frame->colorspace = pix->colorspace; frame->crop.width = frame->width; frame->crop.height = frame->height; frame->crop.left = 0; frame->crop.top = 0; state = BDISP_PARAMS; state |= (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ? BDISP_DST_FMT : BDISP_SRC_FMT; bdisp_ctx_state_lock_set(state, ctx); return 0; } static int bdisp_g_selection(struct file *file, void *fh, struct v4l2_selection *s) { struct bdisp_frame *frame; struct bdisp_ctx *ctx = fh_to_ctx(fh); frame = ctx_get_frame(ctx, s->type); if (IS_ERR(frame)) { dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); return PTR_ERR(frame); } switch (s->type) { case V4L2_BUF_TYPE_VIDEO_OUTPUT: switch (s->target) { case V4L2_SEL_TGT_CROP: /* cropped frame */ s->r = frame->crop; break; case V4L2_SEL_TGT_CROP_DEFAULT: case V4L2_SEL_TGT_CROP_BOUNDS: /* complete frame */ s->r.left = 0; s->r.top = 0; s->r.width = frame->width; s->r.height = frame->height; break; default: dev_err(ctx->bdisp_dev->dev, "Invalid target\n"); return -EINVAL; } break; case V4L2_BUF_TYPE_VIDEO_CAPTURE: switch (s->target) { case V4L2_SEL_TGT_COMPOSE: case V4L2_SEL_TGT_COMPOSE_PADDED: /* composed (cropped) frame */ s->r = frame->crop; break; case V4L2_SEL_TGT_COMPOSE_DEFAULT: case V4L2_SEL_TGT_COMPOSE_BOUNDS: /* complete frame */ s->r.left = 0; s->r.top = 0; s->r.width = frame->width; s->r.height = frame->height; break; default: dev_err(ctx->bdisp_dev->dev, "Invalid target\n"); return -EINVAL; } break; default: dev_err(ctx->bdisp_dev->dev, "Invalid type\n"); return -EINVAL; } return 0; } static int is_rect_enclosed(struct v4l2_rect *a, struct v4l2_rect *b) { /* Return 1 if a is enclosed in b, or 0 otherwise. */ if (a->left < b->left || a->top < b->top) return 0; if (a->left + a->width > b->left + b->width) return 0; if (a->top + a->height > b->top + b->height) return 0; return 1; } static int bdisp_s_selection(struct file *file, void *fh, struct v4l2_selection *s) { struct bdisp_frame *frame; struct bdisp_ctx *ctx = fh_to_ctx(fh); struct v4l2_rect *in, out; bool valid = false; if ((s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) && (s->target == V4L2_SEL_TGT_CROP)) valid = true; if ((s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) && (s->target == V4L2_SEL_TGT_COMPOSE)) valid = true; if (!valid) { dev_err(ctx->bdisp_dev->dev, "Invalid type / target\n"); return -EINVAL; } frame = ctx_get_frame(ctx, s->type); if (IS_ERR(frame)) { dev_err(ctx->bdisp_dev->dev, "Invalid frame (%p)\n", frame); return PTR_ERR(frame); } in = &s->r; out = *in; /* Align and check origin */ out.left = ALIGN(in->left, frame->fmt->w_align); out.top = ALIGN(in->top, frame->fmt->h_align); if ((out.left < 0) || (out.left >= frame->width) || (out.top < 0) || (out.top >= frame->height)) { dev_err(ctx->bdisp_dev->dev, "Invalid crop: %dx%d@(%d,%d) vs frame: %dx%d\n", out.width, out.height, out.left, out.top, frame->width, frame->height); return -EINVAL; } /* Align and check size */ out.width = ALIGN(in->width, frame->fmt->w_align); out.height = ALIGN(in->height, frame->fmt->w_align); if (((out.left + out.width) > frame->width) || ((out.top + out.height) > frame->height)) { dev_err(ctx->bdisp_dev->dev, "Invalid crop: %dx%d@(%d,%d) vs frame: %dx%d\n", out.width, out.height, out.left, out.top, frame->width, frame->height); return -EINVAL; } /* Checks adjust constraints flags */ if (s->flags & V4L2_SEL_FLAG_LE && !is_rect_enclosed(&out, in)) return -ERANGE; if (s->flags & V4L2_SEL_FLAG_GE && !is_rect_enclosed(in, &out)) return -ERANGE; if ((out.left != in->left) || (out.top != in->top) || (out.width != in->width) || (out.height != in->height)) { dev_dbg(ctx->bdisp_dev->dev, "%s crop updated: %dx%d@(%d,%d) -> %dx%d@(%d,%d)\n", __func__, in->width, in->height, in->left, in->top, out.width, out.height, out.left, out.top); *in = out; } frame->crop = out; bdisp_ctx_state_lock_set(BDISP_PARAMS, ctx); return 0; } static int bdisp_streamon(struct file *file, void *fh, enum v4l2_buf_type type) { struct bdisp_ctx *ctx = fh_to_ctx(fh); if ((type == V4L2_BUF_TYPE_VIDEO_OUTPUT) && !bdisp_ctx_state_is_set(BDISP_SRC_FMT, ctx)) { dev_err(ctx->bdisp_dev->dev, "src not defined\n"); return -EINVAL; } if ((type == V4L2_BUF_TYPE_VIDEO_CAPTURE) && !bdisp_ctx_state_is_set(BDISP_DST_FMT, ctx)) { dev_err(ctx->bdisp_dev->dev, "dst not defined\n"); return -EINVAL; } return v4l2_m2m_streamon(file, ctx->fh.m2m_ctx, type); } static const struct v4l2_ioctl_ops bdisp_ioctl_ops = { .vidioc_querycap = bdisp_querycap, .vidioc_enum_fmt_vid_cap = bdisp_enum_fmt, .vidioc_enum_fmt_vid_out = bdisp_enum_fmt, .vidioc_g_fmt_vid_cap = bdisp_g_fmt, .vidioc_g_fmt_vid_out = bdisp_g_fmt, .vidioc_try_fmt_vid_cap = bdisp_try_fmt, .vidioc_try_fmt_vid_out = bdisp_try_fmt, .vidioc_s_fmt_vid_cap = bdisp_s_fmt, .vidioc_s_fmt_vid_out = bdisp_s_fmt, .vidioc_g_selection = bdisp_g_selection, .vidioc_s_selection = bdisp_s_selection, .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, .vidioc_expbuf = v4l2_m2m_ioctl_expbuf, .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, .vidioc_streamon = bdisp_streamon, .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, .vidioc_unsubscribe_event = v4l2_event_unsubscribe, }; static int bdisp_register_device(struct bdisp_dev *bdisp) { int ret; if (!bdisp) return -ENODEV; bdisp->vdev.fops = &bdisp_fops; bdisp->vdev.ioctl_ops = &bdisp_ioctl_ops; bdisp->vdev.release = video_device_release_empty; bdisp->vdev.lock = &bdisp->lock; bdisp->vdev.vfl_dir = VFL_DIR_M2M; bdisp->vdev.v4l2_dev = &bdisp->v4l2_dev; snprintf(bdisp->vdev.name, sizeof(bdisp->vdev.name), "%s.%d", BDISP_NAME, bdisp->id); video_set_drvdata(&bdisp->vdev, bdisp); bdisp->m2m.vdev = &bdisp->vdev; bdisp->m2m.m2m_dev = v4l2_m2m_init(&bdisp_m2m_ops); if (IS_ERR(bdisp->m2m.m2m_dev)) { dev_err(bdisp->dev, "failed to initialize v4l2-m2m device\n"); return PTR_ERR(bdisp->m2m.m2m_dev); } ret = video_register_device(&bdisp->vdev, VFL_TYPE_GRABBER, -1); if (ret) { dev_err(bdisp->dev, "%s(): failed to register video device\n", __func__); v4l2_m2m_release(bdisp->m2m.m2m_dev); return ret; } return 0; } static void bdisp_unregister_device(struct bdisp_dev *bdisp) { if (!bdisp) return; if (bdisp->m2m.m2m_dev) v4l2_m2m_release(bdisp->m2m.m2m_dev); video_unregister_device(bdisp->m2m.vdev); } static irqreturn_t bdisp_irq_thread(int irq, void *priv) { struct bdisp_dev *bdisp = priv; struct bdisp_ctx *ctx; spin_lock(&bdisp->slock); bdisp_dbg_perf_end(bdisp); cancel_delayed_work(&bdisp->timeout_work); if (!test_and_clear_bit(ST_M2M_RUNNING, &bdisp->state)) goto isr_unlock; if (test_and_clear_bit(ST_M2M_SUSPENDING, &bdisp->state)) { set_bit(ST_M2M_SUSPENDED, &bdisp->state); wake_up(&bdisp->irq_queue); goto isr_unlock; } ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev); if (!ctx || !ctx->fh.m2m_ctx) goto isr_unlock; spin_unlock(&bdisp->slock); bdisp_job_finish(ctx, VB2_BUF_STATE_DONE); if (bdisp_ctx_state_is_set(BDISP_CTX_STOP_REQ, ctx)) { bdisp_ctx_state_lock_clear(BDISP_CTX_STOP_REQ, ctx); wake_up(&bdisp->irq_queue); } return IRQ_HANDLED; isr_unlock: spin_unlock(&bdisp->slock); return IRQ_HANDLED; } static irqreturn_t bdisp_irq_handler(int irq, void *priv) { if (bdisp_hw_get_and_clear_irq((struct bdisp_dev *)priv)) return IRQ_NONE; else return IRQ_WAKE_THREAD; } static void bdisp_irq_timeout(struct work_struct *ptr) { struct delayed_work *twork = to_delayed_work(ptr); struct bdisp_dev *bdisp = container_of(twork, struct bdisp_dev, timeout_work); struct bdisp_ctx *ctx; ctx = v4l2_m2m_get_curr_priv(bdisp->m2m.m2m_dev); dev_err(ctx->bdisp_dev->dev, "Device work timeout\n"); spin_lock(&bdisp->slock); clear_bit(ST_M2M_RUNNING, &bdisp->state); spin_unlock(&bdisp->slock); bdisp_hw_reset(bdisp); bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR); } static int bdisp_m2m_suspend(struct bdisp_dev *bdisp) { unsigned long flags; int timeout; spin_lock_irqsave(&bdisp->slock, flags); if (!test_bit(ST_M2M_RUNNING, &bdisp->state)) { spin_unlock_irqrestore(&bdisp->slock, flags); return 0; } clear_bit(ST_M2M_SUSPENDED, &bdisp->state); set_bit(ST_M2M_SUSPENDING, &bdisp->state); spin_unlock_irqrestore(&bdisp->slock, flags); timeout = wait_event_timeout(bdisp->irq_queue, test_bit(ST_M2M_SUSPENDED, &bdisp->state), BDISP_WORK_TIMEOUT); clear_bit(ST_M2M_SUSPENDING, &bdisp->state); if (!timeout) { dev_err(bdisp->dev, "%s IRQ timeout\n", __func__); return -EAGAIN; } return 0; } static int bdisp_m2m_resume(struct bdisp_dev *bdisp) { struct bdisp_ctx *ctx; unsigned long flags; spin_lock_irqsave(&bdisp->slock, flags); ctx = bdisp->m2m.ctx; bdisp->m2m.ctx = NULL; spin_unlock_irqrestore(&bdisp->slock, flags); if (test_and_clear_bit(ST_M2M_SUSPENDED, &bdisp->state)) bdisp_job_finish(ctx, VB2_BUF_STATE_ERROR); return 0; } static int bdisp_runtime_resume(struct device *dev) { struct bdisp_dev *bdisp = dev_get_drvdata(dev); int ret = clk_enable(bdisp->clock); if (ret) return ret; return bdisp_m2m_resume(bdisp); } static int bdisp_runtime_suspend(struct device *dev) { struct bdisp_dev *bdisp = dev_get_drvdata(dev); int ret = bdisp_m2m_suspend(bdisp); if (!ret) clk_disable(bdisp->clock); return ret; } static int bdisp_resume(struct device *dev) { struct bdisp_dev *bdisp = dev_get_drvdata(dev); unsigned long flags; int opened; spin_lock_irqsave(&bdisp->slock, flags); opened = test_bit(ST_M2M_OPEN, &bdisp->state); spin_unlock_irqrestore(&bdisp->slock, flags); if (!opened) return 0; if (!pm_runtime_suspended(dev)) return bdisp_runtime_resume(dev); return 0; } static int bdisp_suspend(struct device *dev) { if (!pm_runtime_suspended(dev)) return bdisp_runtime_suspend(dev); return 0; } static const struct dev_pm_ops bdisp_pm_ops = { .suspend = bdisp_suspend, .resume = bdisp_resume, .runtime_suspend = bdisp_runtime_suspend, .runtime_resume = bdisp_runtime_resume, }; static int bdisp_remove(struct platform_device *pdev) { struct bdisp_dev *bdisp = platform_get_drvdata(pdev); bdisp_unregister_device(bdisp); bdisp_hw_free_filters(bdisp->dev); pm_runtime_disable(&pdev->dev); bdisp_debugfs_remove(bdisp); v4l2_device_unregister(&bdisp->v4l2_dev); if (!IS_ERR(bdisp->clock)) clk_unprepare(bdisp->clock); dev_dbg(&pdev->dev, "%s driver unloaded\n", pdev->name); return 0; } static int bdisp_probe(struct platform_device *pdev) { struct bdisp_dev *bdisp; struct resource *res; struct device *dev = &pdev->dev; int ret; dev_dbg(dev, "%s\n", __func__); bdisp = devm_kzalloc(dev, sizeof(struct bdisp_dev), GFP_KERNEL); if (!bdisp) return -ENOMEM; ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32)); if (ret) return ret; bdisp->pdev = pdev; bdisp->dev = dev; platform_set_drvdata(pdev, bdisp); if (dev->of_node) bdisp->id = of_alias_get_id(pdev->dev.of_node, BDISP_NAME); else bdisp->id = pdev->id; init_waitqueue_head(&bdisp->irq_queue); INIT_DELAYED_WORK(&bdisp->timeout_work, bdisp_irq_timeout); bdisp->work_queue = create_workqueue(BDISP_NAME); spin_lock_init(&bdisp->slock); mutex_init(&bdisp->lock); /* get resources */ res = platform_get_resource(pdev, IORESOURCE_MEM, 0); bdisp->regs = devm_ioremap_resource(dev, res); if (IS_ERR(bdisp->regs)) { dev_err(dev, "failed to get regs\n"); return PTR_ERR(bdisp->regs); } bdisp->clock = devm_clk_get(dev, BDISP_NAME); if (IS_ERR(bdisp->clock)) { dev_err(dev, "failed to get clock\n"); return PTR_ERR(bdisp->clock); } ret = clk_prepare(bdisp->clock); if (ret < 0) { dev_err(dev, "clock prepare failed\n"); bdisp->clock = ERR_PTR(-EINVAL); return ret; } res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { dev_err(dev, "failed to get IRQ resource\n"); ret = -EINVAL; goto err_clk; } ret = devm_request_threaded_irq(dev, res->start, bdisp_irq_handler, bdisp_irq_thread, IRQF_ONESHOT, pdev->name, bdisp); if (ret) { dev_err(dev, "failed to install irq\n"); goto err_clk; } /* v4l2 register */ ret = v4l2_device_register(dev, &bdisp->v4l2_dev); if (ret) { dev_err(dev, "failed to register\n"); goto err_clk; } /* Debug */ ret = bdisp_debugfs_create(bdisp); if (ret) { dev_err(dev, "failed to create debugfs\n"); goto err_v4l2; } /* Power management */ pm_runtime_enable(dev); ret = pm_runtime_get_sync(dev); if (ret < 0) { dev_err(dev, "failed to set PM\n"); goto err_pm; } /* Filters */ if (bdisp_hw_alloc_filters(bdisp->dev)) { dev_err(bdisp->dev, "no memory for filters\n"); ret = -ENOMEM; goto err_pm; } /* Register */ ret = bdisp_register_device(bdisp); if (ret) { dev_err(dev, "failed to register\n"); goto err_filter; } dev_info(dev, "%s%d registered as /dev/video%d\n", BDISP_NAME, bdisp->id, bdisp->vdev.num); pm_runtime_put(dev); return 0; err_filter: bdisp_hw_free_filters(bdisp->dev); err_pm: pm_runtime_put(dev); bdisp_debugfs_remove(bdisp); err_v4l2: v4l2_device_unregister(&bdisp->v4l2_dev); err_clk: if (!IS_ERR(bdisp->clock)) clk_unprepare(bdisp->clock); return ret; } static const struct of_device_id bdisp_match_types[] = { { .compatible = "st,stih407-bdisp", }, { /* end node */ } }; MODULE_DEVICE_TABLE(of, bdisp_match_types); static struct platform_driver bdisp_driver = { .probe = bdisp_probe, .remove = bdisp_remove, .driver = { .name = BDISP_NAME, .of_match_table = bdisp_match_types, .pm = &bdisp_pm_ops, }, }; module_platform_driver(bdisp_driver); MODULE_DESCRIPTION("2D blitter for STMicroelectronics SoC"); MODULE_AUTHOR("Fabien Dessenne "); MODULE_LICENSE("GPL");