// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Samsung S5P/EXYNOS4 SoC series FIMC (video postprocessor) driver
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*
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* Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
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* Sylwester Nawrocki <s.nawrocki@samsung.com>
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/bug.h>
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#include <linux/interrupt.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/list.h>
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#include <linux/io.h>
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#include <linux/slab.h>
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#include <linux/clk.h>
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#include <media/v4l2-ioctl.h>
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#include <media/videobuf2-v4l2.h>
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#include <media/videobuf2-dma-contig.h>
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#include "common.h"
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#include "fimc-core.h"
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#include "fimc-reg.h"
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#include "media-dev.h"
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static unsigned int get_m2m_fmt_flags(unsigned int stream_type)
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{
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if (stream_type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
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return FMT_FLAGS_M2M_IN;
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else
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return FMT_FLAGS_M2M_OUT;
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}
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void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state)
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{
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struct vb2_v4l2_buffer *src_vb, *dst_vb;
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if (!ctx || !ctx->fh.m2m_ctx)
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return;
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src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx);
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dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx);
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if (src_vb)
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v4l2_m2m_buf_done(src_vb, vb_state);
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if (dst_vb)
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v4l2_m2m_buf_done(dst_vb, vb_state);
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if (src_vb && dst_vb)
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v4l2_m2m_job_finish(ctx->fimc_dev->m2m.m2m_dev,
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ctx->fh.m2m_ctx);
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}
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/* Complete the transaction which has been scheduled for execution. */
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static void fimc_m2m_shutdown(struct fimc_ctx *ctx)
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{
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struct fimc_dev *fimc = ctx->fimc_dev;
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if (!fimc_m2m_pending(fimc))
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return;
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fimc_ctx_state_set(FIMC_CTX_SHUT, ctx);
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wait_event_timeout(fimc->irq_queue,
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!fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx),
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FIMC_SHUTDOWN_TIMEOUT);
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}
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static int start_streaming(struct vb2_queue *q, unsigned int count)
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{
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struct fimc_ctx *ctx = q->drv_priv;
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return pm_runtime_resume_and_get(&ctx->fimc_dev->pdev->dev);
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}
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static void stop_streaming(struct vb2_queue *q)
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{
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struct fimc_ctx *ctx = q->drv_priv;
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fimc_m2m_shutdown(ctx);
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fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR);
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pm_runtime_put(&ctx->fimc_dev->pdev->dev);
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}
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static void fimc_device_run(void *priv)
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{
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struct vb2_v4l2_buffer *src_vb, *dst_vb;
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struct fimc_ctx *ctx = priv;
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struct fimc_frame *sf, *df;
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struct fimc_dev *fimc;
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unsigned long flags;
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int ret;
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if (WARN(!ctx, "Null context\n"))
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return;
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fimc = ctx->fimc_dev;
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spin_lock_irqsave(&fimc->slock, flags);
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set_bit(ST_M2M_PEND, &fimc->state);
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sf = &ctx->s_frame;
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df = &ctx->d_frame;
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if (ctx->state & FIMC_PARAMS) {
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/* Prepare the DMA offsets for scaler */
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fimc_prepare_dma_offset(ctx, sf);
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fimc_prepare_dma_offset(ctx, df);
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}
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src_vb = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);
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ret = fimc_prepare_addr(ctx, &src_vb->vb2_buf, sf, &sf->paddr);
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if (ret)
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goto dma_unlock;
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dst_vb = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);
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ret = fimc_prepare_addr(ctx, &dst_vb->vb2_buf, df, &df->paddr);
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if (ret)
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goto dma_unlock;
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dst_vb->vb2_buf.timestamp = src_vb->vb2_buf.timestamp;
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dst_vb->flags &= ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
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dst_vb->flags |=
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src_vb->flags & V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
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/* Reconfigure hardware if the context has changed. */
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if (fimc->m2m.ctx != ctx) {
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ctx->state |= FIMC_PARAMS;
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fimc->m2m.ctx = ctx;
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}
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if (ctx->state & FIMC_PARAMS) {
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fimc_set_yuv_order(ctx);
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fimc_hw_set_input_path(ctx);
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fimc_hw_set_in_dma(ctx);
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ret = fimc_set_scaler_info(ctx);
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if (ret)
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goto dma_unlock;
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fimc_hw_set_prescaler(ctx);
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fimc_hw_set_mainscaler(ctx);
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fimc_hw_set_target_format(ctx);
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fimc_hw_set_rotation(ctx);
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fimc_hw_set_effect(ctx);
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fimc_hw_set_out_dma(ctx);
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if (fimc->drv_data->alpha_color)
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fimc_hw_set_rgb_alpha(ctx);
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fimc_hw_set_output_path(ctx);
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}
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fimc_hw_set_input_addr(fimc, &sf->paddr);
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fimc_hw_set_output_addr(fimc, &df->paddr, -1);
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fimc_activate_capture(ctx);
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ctx->state &= (FIMC_CTX_M2M | FIMC_CTX_CAP);
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fimc_hw_activate_input_dma(fimc, true);
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dma_unlock:
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spin_unlock_irqrestore(&fimc->slock, flags);
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}
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static void fimc_job_abort(void *priv)
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{
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fimc_m2m_shutdown(priv);
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}
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static int fimc_queue_setup(struct vb2_queue *vq,
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unsigned int *num_buffers, unsigned int *num_planes,
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unsigned int sizes[], struct device *alloc_devs[])
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{
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struct fimc_ctx *ctx = vb2_get_drv_priv(vq);
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struct fimc_frame *f;
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int i;
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f = ctx_get_frame(ctx, vq->type);
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if (IS_ERR(f))
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return PTR_ERR(f);
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/*
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* Return number of non-contiguous planes (plane buffers)
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* depending on the configured color format.
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*/
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if (!f->fmt)
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return -EINVAL;
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*num_planes = f->fmt->memplanes;
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for (i = 0; i < f->fmt->memplanes; i++)
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sizes[i] = f->payload[i];
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return 0;
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}
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static int fimc_buf_prepare(struct vb2_buffer *vb)
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{
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struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
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struct fimc_frame *frame;
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int i;
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frame = ctx_get_frame(ctx, vb->vb2_queue->type);
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if (IS_ERR(frame))
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return PTR_ERR(frame);
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for (i = 0; i < frame->fmt->memplanes; i++)
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vb2_set_plane_payload(vb, i, frame->payload[i]);
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return 0;
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}
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static void fimc_buf_queue(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
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v4l2_m2m_buf_queue(ctx->fh.m2m_ctx, vbuf);
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}
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static const struct vb2_ops fimc_qops = {
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.queue_setup = fimc_queue_setup,
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.buf_prepare = fimc_buf_prepare,
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.buf_queue = fimc_buf_queue,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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.stop_streaming = stop_streaming,
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.start_streaming = start_streaming,
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};
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/*
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* V4L2 ioctl handlers
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*/
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static int fimc_m2m_querycap(struct file *file, void *fh,
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struct v4l2_capability *cap)
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{
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struct fimc_dev *fimc = video_drvdata(file);
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__fimc_vidioc_querycap(&fimc->pdev->dev, cap);
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return 0;
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}
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static int fimc_m2m_enum_fmt(struct file *file, void *priv,
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struct v4l2_fmtdesc *f)
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{
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struct fimc_fmt *fmt;
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fmt = fimc_find_format(NULL, NULL, get_m2m_fmt_flags(f->type),
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f->index);
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if (!fmt)
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return -EINVAL;
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f->pixelformat = fmt->fourcc;
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return 0;
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}
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static int fimc_m2m_g_fmt_mplane(struct file *file, void *fh,
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struct v4l2_format *f)
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{
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struct fimc_ctx *ctx = fh_to_ctx(fh);
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struct fimc_frame *frame = ctx_get_frame(ctx, f->type);
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if (IS_ERR(frame))
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return PTR_ERR(frame);
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__fimc_get_format(frame, f);
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return 0;
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}
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static int fimc_try_fmt_mplane(struct fimc_ctx *ctx, struct v4l2_format *f)
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{
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struct fimc_dev *fimc = ctx->fimc_dev;
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const struct fimc_variant *variant = fimc->variant;
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struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
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struct fimc_fmt *fmt;
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u32 max_w, mod_x, mod_y;
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if (!IS_M2M(f->type))
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return -EINVAL;
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fmt = fimc_find_format(&pix->pixelformat, NULL,
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get_m2m_fmt_flags(f->type), 0);
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if (WARN(fmt == NULL, "Pixel format lookup failed"))
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return -EINVAL;
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if (pix->field == V4L2_FIELD_ANY)
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pix->field = V4L2_FIELD_NONE;
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else if (pix->field != V4L2_FIELD_NONE)
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return -EINVAL;
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if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
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max_w = variant->pix_limit->scaler_dis_w;
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mod_x = ffs(variant->min_inp_pixsize) - 1;
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} else {
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max_w = variant->pix_limit->out_rot_dis_w;
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mod_x = ffs(variant->min_out_pixsize) - 1;
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}
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if (tiled_fmt(fmt)) {
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mod_x = 6; /* 64 x 32 pixels tile */
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mod_y = 5;
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} else {
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if (variant->min_vsize_align == 1)
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mod_y = fimc_fmt_is_rgb(fmt->color) ? 0 : 1;
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else
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mod_y = ffs(variant->min_vsize_align) - 1;
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}
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v4l_bound_align_image(&pix->width, 16, max_w, mod_x,
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&pix->height, 8, variant->pix_limit->scaler_dis_w, mod_y, 0);
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fimc_adjust_mplane_format(fmt, pix->width, pix->height, &f->fmt.pix_mp);
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return 0;
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}
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static int fimc_m2m_try_fmt_mplane(struct file *file, void *fh,
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struct v4l2_format *f)
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{
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struct fimc_ctx *ctx = fh_to_ctx(fh);
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return fimc_try_fmt_mplane(ctx, f);
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}
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static void __set_frame_format(struct fimc_frame *frame, struct fimc_fmt *fmt,
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struct v4l2_pix_format_mplane *pixm)
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{
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int i;
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for (i = 0; i < fmt->memplanes; i++) {
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frame->bytesperline[i] = pixm->plane_fmt[i].bytesperline;
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frame->payload[i] = pixm->plane_fmt[i].sizeimage;
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}
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frame->f_width = pixm->width;
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frame->f_height = pixm->height;
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frame->o_width = pixm->width;
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frame->o_height = pixm->height;
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frame->width = pixm->width;
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frame->height = pixm->height;
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frame->offs_h = 0;
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frame->offs_v = 0;
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frame->fmt = fmt;
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}
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static int fimc_m2m_s_fmt_mplane(struct file *file, void *fh,
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struct v4l2_format *f)
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{
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struct fimc_ctx *ctx = fh_to_ctx(fh);
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struct fimc_dev *fimc = ctx->fimc_dev;
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struct fimc_fmt *fmt;
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struct vb2_queue *vq;
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struct fimc_frame *frame;
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int ret;
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ret = fimc_try_fmt_mplane(ctx, f);
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if (ret)
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return ret;
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vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, f->type);
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if (vb2_is_busy(vq)) {
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v4l2_err(&fimc->m2m.vfd, "queue (%d) busy\n", f->type);
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return -EBUSY;
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}
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if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
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frame = &ctx->s_frame;
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else
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frame = &ctx->d_frame;
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fmt = fimc_find_format(&f->fmt.pix_mp.pixelformat, NULL,
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get_m2m_fmt_flags(f->type), 0);
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if (!fmt)
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return -EINVAL;
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__set_frame_format(frame, fmt, &f->fmt.pix_mp);
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/* Update RGB Alpha control state and value range */
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fimc_alpha_ctrl_update(ctx);
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return 0;
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}
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static int fimc_m2m_g_selection(struct file *file, void *fh,
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struct v4l2_selection *s)
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{
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struct fimc_ctx *ctx = fh_to_ctx(fh);
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struct fimc_frame *frame;
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frame = ctx_get_frame(ctx, s->type);
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if (IS_ERR(frame))
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return PTR_ERR(frame);
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switch (s->target) {
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case V4L2_SEL_TGT_CROP:
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case V4L2_SEL_TGT_CROP_DEFAULT:
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case V4L2_SEL_TGT_CROP_BOUNDS:
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if (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT)
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return -EINVAL;
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break;
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case V4L2_SEL_TGT_COMPOSE:
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case V4L2_SEL_TGT_COMPOSE_DEFAULT:
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case V4L2_SEL_TGT_COMPOSE_BOUNDS:
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if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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return -EINVAL;
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break;
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default:
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return -EINVAL;
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}
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switch (s->target) {
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case V4L2_SEL_TGT_CROP:
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case V4L2_SEL_TGT_COMPOSE:
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s->r.left = frame->offs_h;
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s->r.top = frame->offs_v;
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s->r.width = frame->width;
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s->r.height = frame->height;
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break;
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case V4L2_SEL_TGT_CROP_DEFAULT:
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case V4L2_SEL_TGT_CROP_BOUNDS:
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case V4L2_SEL_TGT_COMPOSE_DEFAULT:
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case V4L2_SEL_TGT_COMPOSE_BOUNDS:
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s->r.left = 0;
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s->r.top = 0;
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s->r.width = frame->o_width;
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s->r.height = frame->o_height;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static int fimc_m2m_try_selection(struct fimc_ctx *ctx,
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struct v4l2_selection *s)
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{
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struct fimc_dev *fimc = ctx->fimc_dev;
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struct fimc_frame *f;
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u32 min_size, halign, depth = 0;
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int i;
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if (s->r.top < 0 || s->r.left < 0) {
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v4l2_err(&fimc->m2m.vfd,
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"doesn't support negative values for top & left\n");
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return -EINVAL;
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}
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if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
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f = &ctx->d_frame;
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if (s->target != V4L2_SEL_TGT_COMPOSE)
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return -EINVAL;
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} else if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
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f = &ctx->s_frame;
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if (s->target != V4L2_SEL_TGT_CROP)
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return -EINVAL;
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} else {
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return -EINVAL;
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}
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min_size = (f == &ctx->s_frame) ?
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fimc->variant->min_inp_pixsize : fimc->variant->min_out_pixsize;
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/* Get pixel alignment constraints. */
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if (fimc->variant->min_vsize_align == 1)
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halign = fimc_fmt_is_rgb(f->fmt->color) ? 0 : 1;
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else
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halign = ffs(fimc->variant->min_vsize_align) - 1;
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for (i = 0; i < f->fmt->memplanes; i++)
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depth += f->fmt->depth[i];
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v4l_bound_align_image(&s->r.width, min_size, f->o_width,
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ffs(min_size) - 1,
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&s->r.height, min_size, f->o_height,
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halign, 64/(ALIGN(depth, 8)));
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/* adjust left/top if cropping rectangle is out of bounds */
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if (s->r.left + s->r.width > f->o_width)
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s->r.left = f->o_width - s->r.width;
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if (s->r.top + s->r.height > f->o_height)
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s->r.top = f->o_height - s->r.height;
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s->r.left = round_down(s->r.left, min_size);
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s->r.top = round_down(s->r.top, fimc->variant->hor_offs_align);
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dbg("l:%d, t:%d, w:%d, h:%d, f_w: %d, f_h: %d",
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s->r.left, s->r.top, s->r.width, s->r.height,
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f->f_width, f->f_height);
|
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return 0;
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}
|
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static int fimc_m2m_s_selection(struct file *file, void *fh,
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struct v4l2_selection *s)
|
{
|
struct fimc_ctx *ctx = fh_to_ctx(fh);
|
struct fimc_dev *fimc = ctx->fimc_dev;
|
struct fimc_frame *f;
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int ret;
|
|
ret = fimc_m2m_try_selection(ctx, s);
|
if (ret)
|
return ret;
|
|
f = (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) ?
|
&ctx->s_frame : &ctx->d_frame;
|
|
/* Check to see if scaling ratio is within supported range */
|
if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT) {
|
ret = fimc_check_scaler_ratio(ctx, s->r.width,
|
s->r.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, s->r.width,
|
s->r.height, ctx->rotation);
|
}
|
if (ret) {
|
v4l2_err(&fimc->m2m.vfd, "Out of scaler range\n");
|
return -EINVAL;
|
}
|
|
f->offs_h = s->r.left;
|
f->offs_v = s->r.top;
|
f->width = s->r.width;
|
f->height = s->r.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 = fimc_m2m_enum_fmt,
|
.vidioc_enum_fmt_vid_out = fimc_m2m_enum_fmt,
|
.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 = v4l2_m2m_ioctl_reqbufs,
|
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
|
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
|
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
|
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
|
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
|
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
|
.vidioc_g_selection = fimc_m2m_g_selection,
|
.vidioc_s_selection = fimc_m2m_s_selection,
|
|
};
|
|
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);
|
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
|
src_vq->lock = &ctx->fimc_dev->lock;
|
src_vq->dev = &ctx->fimc_dev->pdev->dev;
|
|
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);
|
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
|
dst_vq->lock = &ctx->fimc_dev->lock;
|
dst_vq->dev = &ctx->fimc_dev->pdev->dev;
|
|
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;
|
|
pr_debug("pid: %d, state: %#lx\n", task_pid_nr(current), fimc->state);
|
|
if (mutex_lock_interruptible(&fimc->lock))
|
return -ERESTARTSYS;
|
/*
|
* Don't allow simultaneous open() of the mem-to-mem and the
|
* capture video node that belong to same FIMC IP instance.
|
*/
|
if (test_bit(ST_CAPT_BUSY, &fimc->state))
|
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->fh.m2m_ctx = v4l2_m2m_ctx_init(fimc->m2m.m2m_dev, ctx, queue_init);
|
if (IS_ERR(ctx->fh.m2m_ctx)) {
|
ret = PTR_ERR(ctx->fh.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->fh.m2m_ctx);
|
error_c:
|
fimc_ctrls_delete(ctx);
|
v4l2_fh_del(&ctx->fh);
|
error_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->fh.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 const struct v4l2_file_operations fimc_m2m_fops = {
|
.owner = THIS_MODULE,
|
.open = fimc_m2m_open,
|
.release = fimc_m2m_release,
|
.poll = v4l2_m2m_fop_poll,
|
.unlocked_ioctl = video_ioctl2,
|
.mmap = v4l2_m2m_fop_mmap,
|
};
|
|
static const 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;
|
vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;
|
set_bit(V4L2_FL_QUIRK_INVERTED_CROP, &vfd->flags);
|
|
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_pads_init(&vfd->entity, 0, NULL);
|
if (ret)
|
goto err_me;
|
|
ret = video_register_device(vfd, VFL_TYPE_VIDEO, -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);
|
}
|
}
|
