diff options
Diffstat (limited to 'drivers/media/platform/s5p-fimc/fimc-m2m.c')
| -rw-r--r-- | drivers/media/platform/s5p-fimc/fimc-m2m.c | 865 |
1 files changed, 0 insertions, 865 deletions
diff --git a/drivers/media/platform/s5p-fimc/fimc-m2m.c b/drivers/media/platform/s5p-fimc/fimc-m2m.c deleted file mode 100644 index f3d535cdd87f..000000000000 --- a/drivers/media/platform/s5p-fimc/fimc-m2m.c +++ /dev/null @@ -1,865 +0,0 @@ -/* - * Samsung S5P/EXYNOS4 SoC series FIMC (video postprocessor) driver - * - * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. - * Sylwester Nawrocki <s.nawrocki@samsung.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published - * by the Free Software Foundation, either version 2 of the License, - * or (at your option) any later version. - */ - -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/bug.h> -#include <linux/interrupt.h> -#include <linux/device.h> -#include <linux/platform_device.h> -#include <linux/pm_runtime.h> -#include <linux/list.h> -#include <linux/io.h> -#include <linux/slab.h> -#include <linux/clk.h> -#include <media/v4l2-ioctl.h> -#include <media/videobuf2-core.h> -#include <media/videobuf2-dma-contig.h> - -#include "fimc-core.h" -#include "fimc-reg.h" -#include "fimc-mdevice.h" - - -static unsigned int get_m2m_fmt_flags(unsigned int stream_type) -{ - if (stream_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) - return FMT_FLAGS_M2M_IN; - else - return FMT_FLAGS_M2M_OUT; -} - -void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state) -{ - struct vb2_buffer *src_vb, *dst_vb; - - if (!ctx || !ctx->m2m_ctx) - return; - - src_vb = v4l2_m2m_src_buf_remove(ctx->m2m_ctx); - dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx); - - if (src_vb && dst_vb) { - v4l2_m2m_buf_done(src_vb, vb_state); - v4l2_m2m_buf_done(dst_vb, vb_state); - v4l2_m2m_job_finish(ctx->fimc_dev->m2m.m2m_dev, - ctx->m2m_ctx); - } -} - -/* Complete the transaction which has been scheduled for execution. */ -static int fimc_m2m_shutdown(struct fimc_ctx *ctx) -{ - struct fimc_dev *fimc = ctx->fimc_dev; - int ret; - - if (!fimc_m2m_pending(fimc)) - return 0; - - fimc_ctx_state_set(FIMC_CTX_SHUT, ctx); - - ret = wait_event_timeout(fimc->irq_queue, - !fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx), - FIMC_SHUTDOWN_TIMEOUT); - - return ret == 0 ? -ETIMEDOUT : ret; -} - -static int start_streaming(struct vb2_queue *q, unsigned int count) -{ - struct fimc_ctx *ctx = q->drv_priv; - int ret; - - ret = pm_runtime_get_sync(&ctx->fimc_dev->pdev->dev); - return ret > 0 ? 0 : ret; -} - -static int stop_streaming(struct vb2_queue *q) -{ - struct fimc_ctx *ctx = q->drv_priv; - int ret; - - ret = fimc_m2m_shutdown(ctx); - if (ret == -ETIMEDOUT) - fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR); - - pm_runtime_put(&ctx->fimc_dev->pdev->dev); - return 0; -} - -static void fimc_device_run(void *priv) -{ - struct vb2_buffer *vb = NULL; - struct fimc_ctx *ctx = priv; - struct fimc_frame *sf, *df; - struct fimc_dev *fimc; - unsigned long flags; - int ret; - - if (WARN(!ctx, "Null context\n")) - return; - - fimc = ctx->fimc_dev; - spin_lock_irqsave(&fimc->slock, flags); - - set_bit(ST_M2M_PEND, &fimc->state); - sf = &ctx->s_frame; - df = &ctx->d_frame; - - if (ctx->state & FIMC_PARAMS) { - /* Prepare the DMA offsets for scaler */ - fimc_prepare_dma_offset(ctx, sf); - fimc_prepare_dma_offset(ctx, df); - } - - vb = v4l2_m2m_next_src_buf(ctx->m2m_ctx); - ret = fimc_prepare_addr(ctx, vb, sf, &sf->paddr); - if (ret) - goto dma_unlock; - - vb = v4l2_m2m_next_dst_buf(ctx->m2m_ctx); - ret = fimc_prepare_addr(ctx, vb, df, &df->paddr); - if (ret) - goto dma_unlock; - - /* Reconfigure hardware if the context has changed. */ - if (fimc->m2m.ctx != ctx) { - ctx->state |= FIMC_PARAMS; - fimc->m2m.ctx = ctx; - } - - if (ctx->state & FIMC_PARAMS) { - fimc_set_yuv_order(ctx); - fimc_hw_set_input_path(ctx); - fimc_hw_set_in_dma(ctx); - ret = fimc_set_scaler_info(ctx); - if (ret) - goto dma_unlock; - fimc_hw_set_prescaler(ctx); - fimc_hw_set_mainscaler(ctx); - fimc_hw_set_target_format(ctx); - fimc_hw_set_rotation(ctx); - fimc_hw_set_effect(ctx); - fimc_hw_set_out_dma(ctx); - if (fimc->variant->has_alpha) - fimc_hw_set_rgb_alpha(ctx); - fimc_hw_set_output_path(ctx); - } - fimc_hw_set_input_addr(fimc, &sf->paddr); - fimc_hw_set_output_addr(fimc, &df->paddr, -1); - - fimc_activate_capture(ctx); - ctx->state &= (FIMC_CTX_M2M | FIMC_CTX_CAP); - fimc_hw_activate_input_dma(fimc, true); - -dma_unlock: - spin_unlock_irqrestore(&fimc->slock, flags); -} - -static void fimc_job_abort(void *priv) -{ - fimc_m2m_shutdown(priv); -} - -static int fimc_queue_setup(struct vb2_queue *vq, const struct v4l2_format *fmt, - unsigned int *num_buffers, unsigned int *num_planes, - unsigned int sizes[], void *allocators[]) -{ - struct fimc_ctx *ctx = vb2_get_drv_priv(vq); - struct fimc_frame *f; - int i; - - f = ctx_get_frame(ctx, vq->type); - if (IS_ERR(f)) - return PTR_ERR(f); - /* - * Return number of non-contigous planes (plane buffers) - * depending on the configured color format. - */ - if (!f->fmt) - return -EINVAL; - - *num_planes = f->fmt->memplanes; - for (i = 0; i < f->fmt->memplanes; i++) { - sizes[i] = (f->f_width * f->f_height * f->fmt->depth[i]) / 8; - allocators[i] = ctx->fimc_dev->alloc_ctx; - } - return 0; -} - -static int fimc_buf_prepare(struct vb2_buffer *vb) -{ - struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); - struct fimc_frame *frame; - int i; - - frame = ctx_get_frame(ctx, vb->vb2_queue->type); - if (IS_ERR(frame)) - return PTR_ERR(frame); - - for (i = 0; i < frame->fmt->memplanes; i++) - vb2_set_plane_payload(vb, i, frame->payload[i]); - - return 0; -} - -static void fimc_buf_queue(struct vb2_buffer *vb) -{ - struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); - - dbg("ctx: %p, ctx->state: 0x%x", ctx, ctx->state); - - if (ctx->m2m_ctx) - v4l2_m2m_buf_queue(ctx->m2m_ctx, vb); -} - -static void fimc_lock(struct vb2_queue *vq) -{ - struct fimc_ctx *ctx = vb2_get_drv_priv(vq); - mutex_lock(&ctx->fimc_dev->lock); -} - -static void fimc_unlock(struct vb2_queue *vq) -{ - struct fimc_ctx *ctx = vb2_get_drv_priv(vq); - mutex_unlock(&ctx->fimc_dev->lock); -} - -static struct vb2_ops fimc_qops = { - .queue_setup = fimc_queue_setup, - .buf_prepare = fimc_buf_prepare, - .buf_queue = fimc_buf_queue, - .wait_prepare = fimc_unlock, - .wait_finish = fimc_lock, - .stop_streaming = stop_streaming, - .start_streaming = start_streaming, -}; - -/* - * V4L2 ioctl handlers - */ -static int fimc_m2m_querycap(struct file *file, void *fh, - struct v4l2_capability *cap) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - struct fimc_dev *fimc = ctx->fimc_dev; - - strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1); - strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1); - cap->bus_info[0] = 0; - /* - * This is only a mem-to-mem video device. The capture and output - * device capability flags are left only for backward compatibility - * and are scheduled for removal. - */ - cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE | - V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_VIDEO_OUTPUT_MPLANE; - - return 0; -} - -static int fimc_m2m_enum_fmt_mplane(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - struct fimc_fmt *fmt; - - fmt = fimc_find_format(NULL, NULL, get_m2m_fmt_flags(f->type), - f->index); - if (!fmt) - return -EINVAL; - - strncpy(f->description, fmt->name, sizeof(f->description) - 1); - f->pixelformat = fmt->fourcc; - return 0; -} - -static int fimc_m2m_g_fmt_mplane(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - struct fimc_frame *frame = ctx_get_frame(ctx, f->type); - - if (IS_ERR(frame)) - return PTR_ERR(frame); - - __fimc_get_format(frame, f); - return 0; -} - -static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f) -{ - struct fimc_dev *fimc = ctx->fimc_dev; - const struct fimc_variant *variant = fimc->variant; - struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; - struct fimc_fmt *fmt; - u32 max_w, mod_x, mod_y; - - if (!IS_M2M(f->type)) - return -EINVAL; - - fmt = fimc_find_format(&pix->pixelformat, NULL, - get_m2m_fmt_flags(f->type), 0); - if (WARN(fmt == NULL, "Pixel format lookup failed")) - return -EINVAL; - - if (pix->field == V4L2_FIELD_ANY) - pix->field = V4L2_FIELD_NONE; - else if (pix->field != V4L2_FIELD_NONE) - return -EINVAL; - - if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { - max_w = variant->pix_limit->scaler_dis_w; - mod_x = ffs(variant->min_inp_pixsize) - 1; - } else { - max_w = variant->pix_limit->out_rot_dis_w; - mod_x = ffs(variant->min_out_pixsize) - 1; - } - - if (tiled_fmt(fmt)) { - mod_x = 6; /* 64 x 32 pixels tile */ - mod_y = 5; - } else { - if (variant->min_vsize_align == 1) - mod_y = fimc_fmt_is_rgb(fmt->color) ? 0 : 1; - else - mod_y = ffs(variant->min_vsize_align) - 1; - } - - v4l_bound_align_image(&pix->width, 16, max_w, mod_x, - &pix->height, 8, variant->pix_limit->scaler_dis_w, mod_y, 0); - - fimc_adjust_mplane_format(fmt, pix->width, pix->height, &f->fmt.pix_mp); - return 0; -} - -static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - return fimc_try_fmt_mplane(ctx, f); -} - -static void __set_frame_format(struct fimc_frame *frame, struct fimc_fmt *fmt, - struct v4l2_pix_format_mplane *pixm) -{ - int i; - - for (i = 0; i < fmt->colplanes; i++) { - frame->bytesperline[i] = pixm->plane_fmt[i].bytesperline; - frame->payload[i] = pixm->plane_fmt[i].sizeimage; - } - - frame->f_width = pixm->width; - frame->f_height = pixm->height; - frame->o_width = pixm->width; - frame->o_height = pixm->height; - frame->width = pixm->width; - frame->height = pixm->height; - frame->offs_h = 0; - frame->offs_v = 0; - frame->fmt = fmt; -} - -static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - struct fimc_dev *fimc = ctx->fimc_dev; - struct fimc_fmt *fmt; - struct vb2_queue *vq; - struct fimc_frame *frame; - int ret; - - ret = fimc_try_fmt_mplane(ctx, f); - if (ret) - return ret; - - vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type); - - if (vb2_is_busy(vq)) { - v4l2_err(&fimc->m2m.vfd, "queue (%d) busy\n", f->type); - return -EBUSY; - } - - if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) - frame = &ctx->s_frame; - else - frame = &ctx->d_frame; - - fmt = fimc_find_format(&f->fmt.pix_mp.pixelformat, NULL, - get_m2m_fmt_flags(f->type), 0); - if (!fmt) - return -EINVAL; - - __set_frame_format(frame, fmt, &f->fmt.pix_mp); - - /* Update RGB Alpha control state and value range */ - fimc_alpha_ctrl_update(ctx); - - return 0; -} - -static int fimc_m2m_reqbufs(struct file *file, void *fh, - struct v4l2_requestbuffers *reqbufs) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs); -} - -static int fimc_m2m_querybuf(struct file *file, void *fh, - struct v4l2_buffer *buf) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf); -} - -static int fimc_m2m_qbuf(struct file *file, void *fh, - struct v4l2_buffer *buf) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf); -} - -static int fimc_m2m_dqbuf(struct file *file, void *fh, - struct v4l2_buffer *buf) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf); -} - -static int fimc_m2m_expbuf(struct file *file, void *fh, - struct v4l2_exportbuffer *eb) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - return v4l2_m2m_expbuf(file, ctx->m2m_ctx, eb); -} - - -static int fimc_m2m_streamon(struct file *file, void *fh, - enum v4l2_buf_type type) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - return v4l2_m2m_streamon(file, ctx->m2m_ctx, type); -} - -static int fimc_m2m_streamoff(struct file *file, void *fh, - enum v4l2_buf_type type) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type); -} - -static int fimc_m2m_cropcap(struct file *file, void *fh, - struct v4l2_cropcap *cr) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - struct fimc_frame *frame; - - frame = ctx_get_frame(ctx, cr->type); - if (IS_ERR(frame)) - return PTR_ERR(frame); - - cr->bounds.left = 0; - cr->bounds.top = 0; - cr->bounds.width = frame->o_width; - cr->bounds.height = frame->o_height; - cr->defrect = cr->bounds; - - return 0; -} - -static int fimc_m2m_g_crop(struct file *file, void *fh, struct v4l2_crop *cr) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - struct fimc_frame *frame; - - frame = ctx_get_frame(ctx, cr->type); - if (IS_ERR(frame)) - return PTR_ERR(frame); - - cr->c.left = frame->offs_h; - cr->c.top = frame->offs_v; - cr->c.width = frame->width; - cr->c.height = frame->height; - - return 0; -} - -static int fimc_m2m_try_crop(struct fimc_ctx *ctx, struct v4l2_crop *cr) -{ - struct fimc_dev *fimc = ctx->fimc_dev; - struct fimc_frame *f; - u32 min_size, halign, depth = 0; - int i; - - if (cr->c.top < 0 || cr->c.left < 0) { - v4l2_err(&fimc->m2m.vfd, - "doesn't support negative values for top & left\n"); - return -EINVAL; - } - if (cr->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) - f = &ctx->d_frame; - else if (cr->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) - f = &ctx->s_frame; - else - return -EINVAL; - - min_size = (f == &ctx->s_frame) ? - fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize; - - /* Get pixel alignment constraints. */ - if (fimc->variant->min_vsize_align == 1) - halign = fimc_fmt_is_rgb(f->fmt->color) ? 0 : 1; - else - halign = ffs(fimc->variant->min_vsize_align) - 1; - - for (i = 0; i < f->fmt->colplanes; i++) - depth += f->fmt->depth[i]; - - v4l_bound_align_image(&cr->c.width, min_size, f->o_width, - ffs(min_size) - 1, - &cr->c.height, min_size, f->o_height, - halign, 64/(ALIGN(depth, 8))); - - /* adjust left/top if cropping rectangle is out of bounds */ - if (cr->c.left + cr->c.width > f->o_width) - cr->c.left = f->o_width - cr->c.width; - if (cr->c.top + cr->c.height > f->o_height) - cr->c.top = f->o_height - cr->c.height; - - cr->c.left = round_down(cr->c.left, min_size); - cr->c.top = round_down(cr->c.top, fimc->variant->hor_offs_align); - - dbg("l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d", - cr->c.left, cr->c.top, cr->c.width, cr->c.height, - f->f_width, f->f_height); - - return 0; -} - -static int fimc_m2m_s_crop(struct file *file, void *fh, const struct v4l2_crop *crop) -{ - struct fimc_ctx *ctx = fh_to_ctx(fh); - struct fimc_dev *fimc = ctx->fimc_dev; - struct v4l2_crop cr = *crop; - struct fimc_frame *f; - int ret; - - ret = fimc_m2m_try_crop(ctx, &cr); - if (ret) - return ret; - - f = (cr.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) ? - &ctx->s_frame : &ctx->d_frame; - - /* Check to see if scaling ratio is within supported range */ - if (cr.type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) { - ret = fimc_check_scaler_ratio(ctx, cr.c.width, - cr.c.height, ctx->d_frame.width, - ctx->d_frame.height, ctx->rotation); - } else { - ret = fimc_check_scaler_ratio(ctx, ctx->s_frame.width, - ctx->s_frame.height, cr.c.width, - cr.c.height, ctx->rotation); - } - if (ret) { - v4l2_err(&fimc->m2m.vfd, "Out of scaler range\n"); - return -EINVAL; - } - - f->offs_h = cr.c.left; - f->offs_v = cr.c.top; - f->width = cr.c.width; - f->height = cr.c.height; - - fimc_ctx_state_set(FIMC_PARAMS, ctx); - - return 0; -} - -static const struct v4l2_ioctl_ops fimc_m2m_ioctl_ops = { - .vidioc_querycap = fimc_m2m_querycap, - .vidioc_enum_fmt_vid_cap_mplane = fimc_m2m_enum_fmt_mplane, - .vidioc_enum_fmt_vid_out_mplane = fimc_m2m_enum_fmt_mplane, - .vidioc_g_fmt_vid_cap_mplane = fimc_m2m_g_fmt_mplane, - .vidioc_g_fmt_vid_out_mplane = fimc_m2m_g_fmt_mplane, - .vidioc_try_fmt_vid_cap_mplane = fimc_m2m_try_fmt_mplane, - .vidioc_try_fmt_vid_out_mplane = fimc_m2m_try_fmt_mplane, - .vidioc_s_fmt_vid_cap_mplane = fimc_m2m_s_fmt_mplane, - .vidioc_s_fmt_vid_out_mplane = fimc_m2m_s_fmt_mplane, - .vidioc_reqbufs = fimc_m2m_reqbufs, - .vidioc_querybuf = fimc_m2m_querybuf, - .vidioc_qbuf = fimc_m2m_qbuf, - .vidioc_dqbuf = fimc_m2m_dqbuf, - .vidioc_expbuf = fimc_m2m_expbuf, - .vidioc_streamon = fimc_m2m_streamon, - .vidioc_streamoff = fimc_m2m_streamoff, - .vidioc_g_crop = fimc_m2m_g_crop, - .vidioc_s_crop = fimc_m2m_s_crop, - .vidioc_cropcap = fimc_m2m_cropcap - -}; - -static int queue_init(void *priv, struct vb2_queue *src_vq, - struct vb2_queue *dst_vq) -{ - struct fimc_ctx *ctx = priv; - int ret; - - src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; - src_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF; - src_vq->drv_priv = ctx; - src_vq->ops = &fimc_qops; - src_vq->mem_ops = &vb2_dma_contig_memops; - src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); - - 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_USERPTR | VB2_DMABUF; - dst_vq->drv_priv = ctx; - dst_vq->ops = &fimc_qops; - dst_vq->mem_ops = &vb2_dma_contig_memops; - dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); - - return vb2_queue_init(dst_vq); -} - -static int fimc_m2m_set_default_format(struct fimc_ctx *ctx) -{ - struct v4l2_pix_format_mplane pixm = { - .pixelformat = V4L2_PIX_FMT_RGB32, - .width = 800, - .height = 600, - .plane_fmt[0] = { - .bytesperline = 800 * 4, - .sizeimage = 800 * 4 * 600, - }, - }; - struct fimc_fmt *fmt; - - fmt = fimc_find_format(&pixm.pixelformat, NULL, FMT_FLAGS_M2M, 0); - if (!fmt) - return -EINVAL; - - __set_frame_format(&ctx->s_frame, fmt, &pixm); - __set_frame_format(&ctx->d_frame, fmt, &pixm); - - return 0; -} - -static int fimc_m2m_open(struct file *file) -{ - struct fimc_dev *fimc = video_drvdata(file); - struct fimc_ctx *ctx; - int ret = -EBUSY; - - dbg("pid: %d, state: 0x%lx, refcnt: %d", - task_pid_nr(current), fimc->state, fimc->vid_cap.refcnt); - - if (mutex_lock_interruptible(&fimc->lock)) - return -ERESTARTSYS; - /* - * Return if the corresponding video capture node - * is already opened. - */ - if (fimc->vid_cap.refcnt > 0) - goto unlock; - - ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); - if (!ctx) { - ret = -ENOMEM; - goto unlock; - } - v4l2_fh_init(&ctx->fh, &fimc->m2m.vfd); - ctx->fimc_dev = fimc; - - /* Default color format */ - ctx->s_frame.fmt = fimc_get_format(0); - ctx->d_frame.fmt = fimc_get_format(0); - - ret = fimc_ctrls_create(ctx); - if (ret) - goto error_fh; - - /* Use separate control handler per file handle */ - ctx->fh.ctrl_handler = &ctx->ctrls.handler; - file->private_data = &ctx->fh; - v4l2_fh_add(&ctx->fh); - - /* Setup the device context for memory-to-memory mode */ - ctx->state = FIMC_CTX_M2M; - ctx->flags = 0; - ctx->in_path = FIMC_IO_DMA; - ctx->out_path = FIMC_IO_DMA; - ctx->scaler.enabled = 1; - - ctx->m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init); - if (IS_ERR(ctx->m2m_ctx)) { - ret = PTR_ERR(ctx->m2m_ctx); - goto error_c; - } - - if (fimc->m2m.refcnt++ == 0) - set_bit(ST_M2M_RUN, &fimc->state); - - ret = fimc_m2m_set_default_format(ctx); - if (ret < 0) - goto error_m2m_ctx; - - mutex_unlock(&fimc->lock); - return 0; - -error_m2m_ctx: - v4l2_m2m_ctx_release(ctx->m2m_ctx); -error_c: - fimc_ctrls_delete(ctx); -error_fh: - v4l2_fh_del(&ctx->fh); - v4l2_fh_exit(&ctx->fh); - kfree(ctx); -unlock: - mutex_unlock(&fimc->lock); - return ret; -} - -static int fimc_m2m_release(struct file *file) -{ - struct fimc_ctx *ctx = fh_to_ctx(file->private_data); - struct fimc_dev *fimc = ctx->fimc_dev; - - dbg("pid: %d, state: 0x%lx, refcnt= %d", - task_pid_nr(current), fimc->state, fimc->m2m.refcnt); - - mutex_lock(&fimc->lock); - - v4l2_m2m_ctx_release(ctx->m2m_ctx); - fimc_ctrls_delete(ctx); - v4l2_fh_del(&ctx->fh); - v4l2_fh_exit(&ctx->fh); - - if (--fimc->m2m.refcnt <= 0) - clear_bit(ST_M2M_RUN, &fimc->state); - kfree(ctx); - - mutex_unlock(&fimc->lock); - return 0; -} - -static unsigned int fimc_m2m_poll(struct file *file, - struct poll_table_struct *wait) -{ - struct fimc_ctx *ctx = fh_to_ctx(file->private_data); - struct fimc_dev *fimc = ctx->fimc_dev; - int ret; - - if (mutex_lock_interruptible(&fimc->lock)) - return -ERESTARTSYS; - - ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait); - mutex_unlock(&fimc->lock); - - return ret; -} - - -static int fimc_m2m_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct fimc_ctx *ctx = fh_to_ctx(file->private_data); - struct fimc_dev *fimc = ctx->fimc_dev; - int ret; - - if (mutex_lock_interruptible(&fimc->lock)) - return -ERESTARTSYS; - - ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma); - mutex_unlock(&fimc->lock); - - return ret; -} - -static const struct v4l2_file_operations fimc_m2m_fops = { - .owner = THIS_MODULE, - .open = fimc_m2m_open, - .release = fimc_m2m_release, - .poll = fimc_m2m_poll, - .unlocked_ioctl = video_ioctl2, - .mmap = fimc_m2m_mmap, -}; - -static struct v4l2_m2m_ops m2m_ops = { - .device_run = fimc_device_run, - .job_abort = fimc_job_abort, -}; - -int fimc_register_m2m_device(struct fimc_dev *fimc, - struct v4l2_device *v4l2_dev) -{ - struct video_device *vfd = &fimc->m2m.vfd; - int ret; - - fimc->v4l2_dev = v4l2_dev; - - memset(vfd, 0, sizeof(*vfd)); - vfd->fops = &fimc_m2m_fops; - vfd->ioctl_ops = &fimc_m2m_ioctl_ops; - vfd->v4l2_dev = v4l2_dev; - vfd->minor = -1; - vfd->release = video_device_release_empty; - vfd->lock = &fimc->lock; - vfd->vfl_dir = VFL_DIR_M2M; - - snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id); - video_set_drvdata(vfd, fimc); - - fimc->m2m.m2m_dev = v4l2_m2m_init(&m2m_ops); - if (IS_ERR(fimc->m2m.m2m_dev)) { - v4l2_err(v4l2_dev, "failed to initialize v4l2-m2m device\n"); - return PTR_ERR(fimc->m2m.m2m_dev); - } - - ret = media_entity_init(&vfd->entity, 0, NULL, 0); - if (ret) - goto err_me; - - ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); - if (ret) - goto err_vd; - - v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", - vfd->name, video_device_node_name(vfd)); - return 0; - -err_vd: - media_entity_cleanup(&vfd->entity); -err_me: - v4l2_m2m_release(fimc->m2m.m2m_dev); - return ret; -} - -void fimc_unregister_m2m_device(struct fimc_dev *fimc) -{ - if (!fimc) - return; - - if (fimc->m2m.m2m_dev) - v4l2_m2m_release(fimc->m2m.m2m_dev); - - if (video_is_registered(&fimc->m2m.vfd)) { - video_unregister_device(&fimc->m2m.vfd); - media_entity_cleanup(&fimc->m2m.vfd.entity); - } -} |