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path: root/drivers/media/video/s5p-fimc/fimc-m2m.c
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Diffstat (limited to 'drivers/media/video/s5p-fimc/fimc-m2m.c')
-rw-r--r--drivers/media/video/s5p-fimc/fimc-m2m.c854
1 files changed, 0 insertions, 854 deletions
diff --git a/drivers/media/video/s5p-fimc/fimc-m2m.c b/drivers/media/video/s5p-fimc/fimc-m2m.c
deleted file mode 100644
index c587011..0000000
--- a/drivers/media/video/s5p-fimc/fimc-m2m.c
+++ /dev/null
@@ -1,854 +0,0 @@
-/*
- * Samsung S5P/EXYNOS4 SoC series FIMC (video postprocessor) driver
- *
- * Copyright (C) 2012 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;
- u32 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_SRC_FMT | FIMC_DST_FMT);
- 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);
-
- return fimc_fill_format(frame, f);
-}
-
-static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f)
-{
- struct fimc_dev *fimc = ctx->fimc_dev;
- 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;
-
- dbg("w: %d, h: %d", pix->width, pix->height);
-
- 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 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 vb2_queue *vq;
- struct fimc_frame *frame;
- struct v4l2_pix_format_mplane *pix;
- int i, ret = 0;
-
- 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;
-
- pix = &f->fmt.pix_mp;
- frame->fmt = fimc_find_format(&pix->pixelformat, NULL,
- get_m2m_fmt_flags(f->type), 0);
- if (!frame->fmt)
- return -EINVAL;
-
- /* Update RGB Alpha control state and value range */
- fimc_alpha_ctrl_update(ctx);
-
- for (i = 0; i < frame->fmt->colplanes; i++) {
- frame->payload[i] =
- (pix->width * pix->height * frame->fmt->depth[i]) / 8;
- }
-
- fimc_fill_frame(frame, f);
-
- ctx->scaler.enabled = 1;
-
- if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
- fimc_ctx_state_set(FIMC_PARAMS | FIMC_DST_FMT, ctx);
- else
- fimc_ctx_state_set(FIMC_PARAMS | FIMC_SRC_FMT, ctx);
-
- dbg("f_w: %d, f_h: %d", frame->f_width, frame->f_height);
-
- 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_streamon(struct file *file, void *fh,
- enum v4l2_buf_type type)
-{
- struct fimc_ctx *ctx = fh_to_ctx(fh);
-
- /* The source and target color format need to be set */
- if (V4L2_TYPE_IS_OUTPUT(type)) {
- if (!fimc_ctx_state_is_set(FIMC_SRC_FMT, ctx))
- return -EINVAL;
- } else if (!fimc_ctx_state_is_set(FIMC_DST_FMT, ctx)) {
- return -EINVAL;
- }
-
- 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, struct v4l2_crop *cr)
-{
- struct fimc_ctx *ctx = fh_to_ctx(fh);
- struct fimc_dev *fimc = ctx->fimc_dev;
- 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 (fimc_ctx_state_is_set(FIMC_DST_FMT | FIMC_SRC_FMT, ctx)) {
- 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_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;
-
- memset(src_vq, 0, sizeof(*src_vq));
- src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
- src_vq->io_modes = VB2_MMAP | VB2_USERPTR;
- 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;
-
- memset(dst_vq, 0, sizeof(*dst_vq));
- dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
- dst_vq->io_modes = VB2_MMAP | VB2_USERPTR;
- 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_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->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);
-
- mutex_unlock(&fimc->lock);
- return 0;
-
-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);
-
- if (mutex_lock_interruptible(&fimc->lock))
- return -ERESTARTSYS;
-
- 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;
- struct platform_device *pdev;
- int ret = 0;
-
- if (!fimc)
- return -ENODEV;
-
- pdev = fimc->pdev;
- fimc->v4l2_dev = v4l2_dev;
-
- vfd = video_device_alloc();
- if (!vfd) {
- v4l2_err(v4l2_dev, "Failed to allocate video device\n");
- return -ENOMEM;
- }
-
- 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;
- vfd->lock = &fimc->lock;
-
- snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id);
- video_set_drvdata(vfd, fimc);
-
- fimc->m2m.vfd = vfd;
- 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");
- ret = PTR_ERR(fimc->m2m.m2m_dev);
- goto err_init;
- }
-
- 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);
-err_init:
- video_device_release(fimc->m2m.vfd);
- 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 (fimc->m2m.vfd) {
- media_entity_cleanup(&fimc->m2m.vfd->entity);
- /* Can also be called if video device wasn't registered */
- video_unregister_device(fimc->m2m.vfd);
- }
-}
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