// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 BayLibre, SAS
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* Author: Maxime Jourdan <mjourdan@baylibre.com>
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*/
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#include <linux/of_device.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/syscon.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/kthread.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-event.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-mem2mem.h>
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#include <media/v4l2-dev.h>
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#include <media/videobuf2-dma-contig.h>
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#include "vdec.h"
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#include "esparser.h"
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#include "vdec_helpers.h"
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struct dummy_buf {
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struct vb2_v4l2_buffer vb;
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struct list_head list;
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};
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/* 16 MiB for parsed bitstream swap exchange */
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#define SIZE_VIFIFO SZ_16M
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static u32 get_output_size(u32 width, u32 height)
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{
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return ALIGN(width * height, SZ_64K);
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}
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u32 amvdec_get_output_size(struct amvdec_session *sess)
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{
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return get_output_size(sess->width, sess->height);
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}
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EXPORT_SYMBOL_GPL(amvdec_get_output_size);
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static int vdec_codec_needs_recycle(struct amvdec_session *sess)
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{
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struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
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return codec_ops->can_recycle && codec_ops->recycle;
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}
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static int vdec_recycle_thread(void *data)
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{
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struct amvdec_session *sess = data;
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struct amvdec_core *core = sess->core;
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struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
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struct amvdec_buffer *tmp, *n;
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while (!kthread_should_stop()) {
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mutex_lock(&sess->bufs_recycle_lock);
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list_for_each_entry_safe(tmp, n, &sess->bufs_recycle, list) {
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if (!codec_ops->can_recycle(core))
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break;
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codec_ops->recycle(core, tmp->vb->index);
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list_del(&tmp->list);
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kfree(tmp);
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}
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mutex_unlock(&sess->bufs_recycle_lock);
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usleep_range(5000, 10000);
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}
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return 0;
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}
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static int vdec_poweron(struct amvdec_session *sess)
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{
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int ret;
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struct amvdec_ops *vdec_ops = sess->fmt_out->vdec_ops;
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ret = clk_prepare_enable(sess->core->dos_parser_clk);
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if (ret)
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return ret;
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ret = clk_prepare_enable(sess->core->dos_clk);
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if (ret)
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goto disable_dos_parser;
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ret = vdec_ops->start(sess);
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if (ret)
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goto disable_dos;
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esparser_power_up(sess);
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return 0;
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disable_dos:
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clk_disable_unprepare(sess->core->dos_clk);
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disable_dos_parser:
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clk_disable_unprepare(sess->core->dos_parser_clk);
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return ret;
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}
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static void vdec_wait_inactive(struct amvdec_session *sess)
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{
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/* We consider 50ms with no IRQ to be inactive. */
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while (time_is_after_jiffies64(sess->last_irq_jiffies +
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msecs_to_jiffies(50)))
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msleep(25);
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}
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static void vdec_poweroff(struct amvdec_session *sess)
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{
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struct amvdec_ops *vdec_ops = sess->fmt_out->vdec_ops;
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struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
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sess->should_stop = 1;
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vdec_wait_inactive(sess);
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if (codec_ops->drain)
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codec_ops->drain(sess);
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vdec_ops->stop(sess);
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clk_disable_unprepare(sess->core->dos_clk);
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clk_disable_unprepare(sess->core->dos_parser_clk);
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}
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static void
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vdec_queue_recycle(struct amvdec_session *sess, struct vb2_buffer *vb)
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{
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struct amvdec_buffer *new_buf;
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new_buf = kmalloc(sizeof(*new_buf), GFP_KERNEL);
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if (!new_buf)
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return;
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new_buf->vb = vb;
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mutex_lock(&sess->bufs_recycle_lock);
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list_add_tail(&new_buf->list, &sess->bufs_recycle);
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mutex_unlock(&sess->bufs_recycle_lock);
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}
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static void vdec_m2m_device_run(void *priv)
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{
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struct amvdec_session *sess = priv;
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schedule_work(&sess->esparser_queue_work);
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}
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static void vdec_m2m_job_abort(void *priv)
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{
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struct amvdec_session *sess = priv;
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v4l2_m2m_job_finish(sess->m2m_dev, sess->m2m_ctx);
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}
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static const struct v4l2_m2m_ops vdec_m2m_ops = {
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.device_run = vdec_m2m_device_run,
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.job_abort = vdec_m2m_job_abort,
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};
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static void process_num_buffers(struct vb2_queue *q,
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struct amvdec_session *sess,
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unsigned int *num_buffers,
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bool is_reqbufs)
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{
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const struct amvdec_format *fmt_out = sess->fmt_out;
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unsigned int buffers_total = q->num_buffers + *num_buffers;
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u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
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if (q->num_buffers + *num_buffers < min_buf_capture)
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*num_buffers = min_buf_capture - q->num_buffers;
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if (is_reqbufs && buffers_total < fmt_out->min_buffers)
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*num_buffers = fmt_out->min_buffers - q->num_buffers;
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if (buffers_total > fmt_out->max_buffers)
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*num_buffers = fmt_out->max_buffers - q->num_buffers;
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/* We need to program the complete CAPTURE buffer list
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* in registers during start_streaming, and the firmwares
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* are free to choose any of them to write frames to. As such,
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* we need all of them to be queued into the driver
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*/
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sess->num_dst_bufs = q->num_buffers + *num_buffers;
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q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
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}
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static int vdec_queue_setup(struct vb2_queue *q, unsigned int *num_buffers,
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unsigned int *num_planes, unsigned int sizes[],
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struct device *alloc_devs[])
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{
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struct amvdec_session *sess = vb2_get_drv_priv(q);
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u32 output_size = amvdec_get_output_size(sess);
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if (*num_planes) {
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switch (q->type) {
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case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
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if (*num_planes != 1 ||
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sizes[0] < sess->src_buffer_size)
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return -EINVAL;
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break;
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case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
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switch (sess->pixfmt_cap) {
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case V4L2_PIX_FMT_NV12M:
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if (*num_planes != 2 ||
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sizes[0] < output_size ||
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sizes[1] < output_size / 2)
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return -EINVAL;
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break;
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case V4L2_PIX_FMT_YUV420M:
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if (*num_planes != 3 ||
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sizes[0] < output_size ||
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sizes[1] < output_size / 4 ||
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sizes[2] < output_size / 4)
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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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process_num_buffers(q, sess, num_buffers, false);
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break;
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}
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return 0;
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}
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switch (q->type) {
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case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
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sizes[0] = sess->src_buffer_size;
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*num_planes = 1;
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break;
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case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
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switch (sess->pixfmt_cap) {
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case V4L2_PIX_FMT_NV12M:
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sizes[0] = output_size;
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sizes[1] = output_size / 2;
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*num_planes = 2;
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break;
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case V4L2_PIX_FMT_YUV420M:
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sizes[0] = output_size;
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sizes[1] = output_size / 4;
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sizes[2] = output_size / 4;
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*num_planes = 3;
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break;
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default:
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return -EINVAL;
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}
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process_num_buffers(q, sess, num_buffers, true);
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break;
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default:
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return -EINVAL;
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}
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sess->changed_format = 1;
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return 0;
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}
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static void vdec_vb2_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 amvdec_session *sess = vb2_get_drv_priv(vb->vb2_queue);
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struct v4l2_m2m_ctx *m2m_ctx = sess->m2m_ctx;
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v4l2_m2m_buf_queue(m2m_ctx, vbuf);
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if (!sess->streamon_out)
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return;
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if (sess->streamon_cap &&
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vb->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
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vdec_codec_needs_recycle(sess))
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vdec_queue_recycle(sess, vb);
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schedule_work(&sess->esparser_queue_work);
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}
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static int vdec_start_streaming(struct vb2_queue *q, unsigned int count)
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{
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struct amvdec_session *sess = vb2_get_drv_priv(q);
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struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
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struct amvdec_core *core = sess->core;
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struct vb2_v4l2_buffer *buf;
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int ret;
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if (core->cur_sess && core->cur_sess != sess) {
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ret = -EBUSY;
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goto bufs_done;
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}
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if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
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sess->streamon_out = 1;
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else
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sess->streamon_cap = 1;
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if (!sess->streamon_out)
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return 0;
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if (sess->status == STATUS_NEEDS_RESUME &&
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q->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE &&
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sess->changed_format) {
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codec_ops->resume(sess);
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sess->status = STATUS_RUNNING;
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return 0;
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}
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if (sess->status == STATUS_RUNNING ||
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sess->status == STATUS_NEEDS_RESUME ||
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sess->status == STATUS_INIT)
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return 0;
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sess->vififo_size = SIZE_VIFIFO;
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sess->vififo_vaddr =
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dma_alloc_coherent(sess->core->dev, sess->vififo_size,
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&sess->vififo_paddr, GFP_KERNEL);
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if (!sess->vififo_vaddr) {
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dev_err(sess->core->dev, "Failed to request VIFIFO buffer\n");
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ret = -ENOMEM;
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goto bufs_done;
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}
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sess->should_stop = 0;
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sess->keyframe_found = 0;
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sess->last_offset = 0;
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sess->wrap_count = 0;
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sess->pixelaspect.numerator = 1;
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sess->pixelaspect.denominator = 1;
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atomic_set(&sess->esparser_queued_bufs, 0);
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v4l2_ctrl_s_ctrl(sess->ctrl_min_buf_capture, 1);
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ret = vdec_poweron(sess);
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if (ret)
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goto vififo_free;
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sess->sequence_cap = 0;
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sess->sequence_out = 0;
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if (vdec_codec_needs_recycle(sess))
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sess->recycle_thread = kthread_run(vdec_recycle_thread, sess,
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"vdec_recycle");
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sess->status = STATUS_INIT;
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core->cur_sess = sess;
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schedule_work(&sess->esparser_queue_work);
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return 0;
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vififo_free:
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dma_free_coherent(sess->core->dev, sess->vififo_size,
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sess->vififo_vaddr, sess->vififo_paddr);
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bufs_done:
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while ((buf = v4l2_m2m_src_buf_remove(sess->m2m_ctx)))
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v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
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while ((buf = v4l2_m2m_dst_buf_remove(sess->m2m_ctx)))
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v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED);
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if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
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sess->streamon_out = 0;
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else
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sess->streamon_cap = 0;
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return ret;
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}
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static void vdec_free_canvas(struct amvdec_session *sess)
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{
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int i;
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for (i = 0; i < sess->canvas_num; ++i)
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meson_canvas_free(sess->core->canvas, sess->canvas_alloc[i]);
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sess->canvas_num = 0;
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}
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static void vdec_reset_timestamps(struct amvdec_session *sess)
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{
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struct amvdec_timestamp *tmp, *n;
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list_for_each_entry_safe(tmp, n, &sess->timestamps, list) {
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list_del(&tmp->list);
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kfree(tmp);
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}
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}
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static void vdec_reset_bufs_recycle(struct amvdec_session *sess)
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{
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struct amvdec_buffer *tmp, *n;
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list_for_each_entry_safe(tmp, n, &sess->bufs_recycle, list) {
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list_del(&tmp->list);
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kfree(tmp);
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}
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}
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static void vdec_stop_streaming(struct vb2_queue *q)
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{
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struct amvdec_session *sess = vb2_get_drv_priv(q);
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struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
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struct amvdec_core *core = sess->core;
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struct vb2_v4l2_buffer *buf;
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if (sess->status == STATUS_RUNNING ||
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sess->status == STATUS_INIT ||
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(sess->status == STATUS_NEEDS_RESUME &&
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(!sess->streamon_out || !sess->streamon_cap))) {
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if (vdec_codec_needs_recycle(sess))
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kthread_stop(sess->recycle_thread);
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vdec_poweroff(sess);
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vdec_free_canvas(sess);
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dma_free_coherent(sess->core->dev, sess->vififo_size,
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sess->vififo_vaddr, sess->vififo_paddr);
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vdec_reset_timestamps(sess);
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vdec_reset_bufs_recycle(sess);
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kfree(sess->priv);
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sess->priv = NULL;
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core->cur_sess = NULL;
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sess->status = STATUS_STOPPED;
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}
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if (q->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
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while ((buf = v4l2_m2m_src_buf_remove(sess->m2m_ctx)))
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v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
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sess->streamon_out = 0;
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} else {
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/* Drain remaining refs if was still running */
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if (sess->status >= STATUS_RUNNING && codec_ops->drain)
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codec_ops->drain(sess);
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while ((buf = v4l2_m2m_dst_buf_remove(sess->m2m_ctx)))
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v4l2_m2m_buf_done(buf, VB2_BUF_STATE_ERROR);
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sess->streamon_cap = 0;
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}
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}
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static int vdec_vb2_buf_prepare(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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vbuf->field = V4L2_FIELD_NONE;
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return 0;
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}
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static const struct vb2_ops vdec_vb2_ops = {
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.queue_setup = vdec_queue_setup,
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.start_streaming = vdec_start_streaming,
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.stop_streaming = vdec_stop_streaming,
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.buf_queue = vdec_vb2_buf_queue,
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.buf_prepare = vdec_vb2_buf_prepare,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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};
|
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static int
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vdec_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
|
{
|
strscpy(cap->driver, "meson-vdec", sizeof(cap->driver));
|
strscpy(cap->card, "Amlogic Video Decoder", sizeof(cap->card));
|
strscpy(cap->bus_info, "platform:meson-vdec", sizeof(cap->bus_info));
|
|
return 0;
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}
|
|
static const struct amvdec_format *
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find_format(const struct amvdec_format *fmts, u32 size, u32 pixfmt)
|
{
|
unsigned int i;
|
|
for (i = 0; i < size; i++) {
|
if (fmts[i].pixfmt == pixfmt)
|
return &fmts[i];
|
}
|
|
return NULL;
|
}
|
|
static unsigned int
|
vdec_supports_pixfmt_cap(const struct amvdec_format *fmt_out, u32 pixfmt_cap)
|
{
|
int i;
|
|
for (i = 0; fmt_out->pixfmts_cap[i]; i++)
|
if (fmt_out->pixfmts_cap[i] == pixfmt_cap)
|
return 1;
|
|
return 0;
|
}
|
|
static const struct amvdec_format *
|
vdec_try_fmt_common(struct amvdec_session *sess, u32 size,
|
struct v4l2_format *f)
|
{
|
struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
|
struct v4l2_plane_pix_format *pfmt = pixmp->plane_fmt;
|
const struct amvdec_format *fmts = sess->core->platform->formats;
|
const struct amvdec_format *fmt_out = NULL;
|
u32 output_size = 0;
|
|
memset(pfmt[0].reserved, 0, sizeof(pfmt[0].reserved));
|
memset(pixmp->reserved, 0, sizeof(pixmp->reserved));
|
|
switch (f->type) {
|
case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
|
fmt_out = find_format(fmts, size, pixmp->pixelformat);
|
if (!fmt_out) {
|
pixmp->pixelformat = V4L2_PIX_FMT_MPEG2;
|
fmt_out = find_format(fmts, size, pixmp->pixelformat);
|
}
|
break;
|
case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
|
fmt_out = sess->fmt_out;
|
break;
|
default:
|
return NULL;
|
}
|
|
pixmp->width = clamp(pixmp->width, (u32)256, fmt_out->max_width);
|
pixmp->height = clamp(pixmp->height, (u32)144, fmt_out->max_height);
|
output_size = get_output_size(pixmp->width, pixmp->height);
|
|
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
|
if (!pfmt[0].sizeimage)
|
pfmt[0].sizeimage = sess->src_buffer_size;
|
pfmt[0].bytesperline = 0;
|
pixmp->num_planes = 1;
|
} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
|
fmt_out = sess->fmt_out;
|
if (!vdec_supports_pixfmt_cap(fmt_out, pixmp->pixelformat))
|
pixmp->pixelformat = fmt_out->pixfmts_cap[0];
|
|
memset(pfmt[1].reserved, 0, sizeof(pfmt[1].reserved));
|
if (pixmp->pixelformat == V4L2_PIX_FMT_NV12M) {
|
pfmt[0].sizeimage = output_size;
|
pfmt[0].bytesperline = ALIGN(pixmp->width, 32);
|
|
pfmt[1].sizeimage = output_size / 2;
|
pfmt[1].bytesperline = ALIGN(pixmp->width, 32);
|
pixmp->num_planes = 2;
|
} else if (pixmp->pixelformat == V4L2_PIX_FMT_YUV420M) {
|
pfmt[0].sizeimage = output_size;
|
pfmt[0].bytesperline = ALIGN(pixmp->width, 32);
|
|
pfmt[1].sizeimage = output_size / 4;
|
pfmt[1].bytesperline = ALIGN(pixmp->width, 32) / 2;
|
|
pfmt[2].sizeimage = output_size / 2;
|
pfmt[2].bytesperline = ALIGN(pixmp->width, 32) / 2;
|
pixmp->num_planes = 3;
|
}
|
}
|
|
if (pixmp->field == V4L2_FIELD_ANY)
|
pixmp->field = V4L2_FIELD_NONE;
|
|
return fmt_out;
|
}
|
|
static int vdec_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
|
{
|
struct amvdec_session *sess =
|
container_of(file->private_data, struct amvdec_session, fh);
|
|
vdec_try_fmt_common(sess, sess->core->platform->num_formats, f);
|
|
return 0;
|
}
|
|
static int vdec_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
|
{
|
struct amvdec_session *sess =
|
container_of(file->private_data, struct amvdec_session, fh);
|
struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
|
|
if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
|
pixmp->pixelformat = sess->pixfmt_cap;
|
else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
|
pixmp->pixelformat = sess->fmt_out->pixfmt;
|
|
if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
|
pixmp->width = sess->width;
|
pixmp->height = sess->height;
|
pixmp->colorspace = sess->colorspace;
|
pixmp->ycbcr_enc = sess->ycbcr_enc;
|
pixmp->quantization = sess->quantization;
|
pixmp->xfer_func = sess->xfer_func;
|
} else if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
|
pixmp->width = sess->width;
|
pixmp->height = sess->height;
|
}
|
|
vdec_try_fmt_common(sess, sess->core->platform->num_formats, f);
|
|
return 0;
|
}
|
|
static int vdec_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
|
{
|
struct amvdec_session *sess =
|
container_of(file->private_data, struct amvdec_session, fh);
|
struct v4l2_pix_format_mplane *pixmp = &f->fmt.pix_mp;
|
u32 num_formats = sess->core->platform->num_formats;
|
const struct amvdec_format *fmt_out;
|
struct v4l2_pix_format_mplane orig_pixmp;
|
struct v4l2_format format;
|
u32 pixfmt_out = 0, pixfmt_cap = 0;
|
|
orig_pixmp = *pixmp;
|
|
fmt_out = vdec_try_fmt_common(sess, num_formats, f);
|
if (!fmt_out)
|
return -EINVAL;
|
|
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
|
pixfmt_out = pixmp->pixelformat;
|
pixfmt_cap = sess->pixfmt_cap;
|
} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
|
pixfmt_cap = pixmp->pixelformat;
|
pixfmt_out = sess->fmt_out->pixfmt;
|
}
|
|
memset(&format, 0, sizeof(format));
|
|
format.type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
|
format.fmt.pix_mp.pixelformat = pixfmt_out;
|
format.fmt.pix_mp.width = orig_pixmp.width;
|
format.fmt.pix_mp.height = orig_pixmp.height;
|
vdec_try_fmt_common(sess, num_formats, &format);
|
|
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
|
sess->width = format.fmt.pix_mp.width;
|
sess->height = format.fmt.pix_mp.height;
|
sess->colorspace = pixmp->colorspace;
|
sess->ycbcr_enc = pixmp->ycbcr_enc;
|
sess->quantization = pixmp->quantization;
|
sess->xfer_func = pixmp->xfer_func;
|
sess->src_buffer_size = pixmp->plane_fmt[0].sizeimage;
|
}
|
|
memset(&format, 0, sizeof(format));
|
|
format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
|
format.fmt.pix_mp.pixelformat = pixfmt_cap;
|
format.fmt.pix_mp.width = orig_pixmp.width;
|
format.fmt.pix_mp.height = orig_pixmp.height;
|
vdec_try_fmt_common(sess, num_formats, &format);
|
|
sess->width = format.fmt.pix_mp.width;
|
sess->height = format.fmt.pix_mp.height;
|
|
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE)
|
sess->fmt_out = fmt_out;
|
else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
|
sess->pixfmt_cap = format.fmt.pix_mp.pixelformat;
|
|
return 0;
|
}
|
|
static int vdec_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
|
{
|
struct amvdec_session *sess =
|
container_of(file->private_data, struct amvdec_session, fh);
|
const struct vdec_platform *platform = sess->core->platform;
|
const struct amvdec_format *fmt_out;
|
|
memset(f->reserved, 0, sizeof(f->reserved));
|
|
if (f->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
|
if (f->index >= platform->num_formats)
|
return -EINVAL;
|
|
fmt_out = &platform->formats[f->index];
|
f->pixelformat = fmt_out->pixfmt;
|
f->flags = fmt_out->flags;
|
} else if (f->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
|
fmt_out = sess->fmt_out;
|
if (f->index >= 4 || !fmt_out->pixfmts_cap[f->index])
|
return -EINVAL;
|
|
f->pixelformat = fmt_out->pixfmts_cap[f->index];
|
} else {
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
static int vdec_enum_framesizes(struct file *file, void *fh,
|
struct v4l2_frmsizeenum *fsize)
|
{
|
struct amvdec_session *sess =
|
container_of(file->private_data, struct amvdec_session, fh);
|
const struct amvdec_format *formats = sess->core->platform->formats;
|
const struct amvdec_format *fmt;
|
u32 num_formats = sess->core->platform->num_formats;
|
|
fmt = find_format(formats, num_formats, fsize->pixel_format);
|
if (!fmt || fsize->index)
|
return -EINVAL;
|
|
fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
|
|
fsize->stepwise.min_width = 256;
|
fsize->stepwise.max_width = fmt->max_width;
|
fsize->stepwise.step_width = 1;
|
fsize->stepwise.min_height = 144;
|
fsize->stepwise.max_height = fmt->max_height;
|
fsize->stepwise.step_height = 1;
|
|
return 0;
|
}
|
|
static int
|
vdec_decoder_cmd(struct file *file, void *fh, struct v4l2_decoder_cmd *cmd)
|
{
|
struct amvdec_session *sess =
|
container_of(file->private_data, struct amvdec_session, fh);
|
struct amvdec_codec_ops *codec_ops = sess->fmt_out->codec_ops;
|
struct device *dev = sess->core->dev;
|
int ret;
|
|
ret = v4l2_m2m_ioctl_try_decoder_cmd(file, fh, cmd);
|
if (ret)
|
return ret;
|
|
if (!(sess->streamon_out & sess->streamon_cap))
|
return 0;
|
|
if (cmd->cmd == V4L2_DEC_CMD_START) {
|
v4l2_m2m_clear_state(sess->m2m_ctx);
|
sess->should_stop = 0;
|
return 0;
|
}
|
|
/* Should not happen */
|
if (cmd->cmd != V4L2_DEC_CMD_STOP)
|
return -EINVAL;
|
|
dev_dbg(dev, "Received V4L2_DEC_CMD_STOP\n");
|
|
sess->should_stop = 1;
|
|
v4l2_m2m_mark_stopped(sess->m2m_ctx);
|
|
if (codec_ops->drain) {
|
vdec_wait_inactive(sess);
|
codec_ops->drain(sess);
|
} else if (codec_ops->eos_sequence) {
|
u32 len;
|
const u8 *data = codec_ops->eos_sequence(&len);
|
|
esparser_queue_eos(sess->core, data, len);
|
vdec_wait_inactive(sess);
|
}
|
|
return ret;
|
}
|
|
static int vdec_subscribe_event(struct v4l2_fh *fh,
|
const struct v4l2_event_subscription *sub)
|
{
|
switch (sub->type) {
|
case V4L2_EVENT_EOS:
|
case V4L2_EVENT_SOURCE_CHANGE:
|
return v4l2_event_subscribe(fh, sub, 0, NULL);
|
case V4L2_EVENT_CTRL:
|
return v4l2_ctrl_subscribe_event(fh, sub);
|
default:
|
return -EINVAL;
|
}
|
}
|
|
static int vdec_g_pixelaspect(struct file *file, void *fh, int type,
|
struct v4l2_fract *f)
|
{
|
struct amvdec_session *sess =
|
container_of(file->private_data, struct amvdec_session, fh);
|
|
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE)
|
return -EINVAL;
|
|
*f = sess->pixelaspect;
|
return 0;
|
}
|
|
static const struct v4l2_ioctl_ops vdec_ioctl_ops = {
|
.vidioc_querycap = vdec_querycap,
|
.vidioc_enum_fmt_vid_cap = vdec_enum_fmt,
|
.vidioc_enum_fmt_vid_out = vdec_enum_fmt,
|
.vidioc_s_fmt_vid_cap_mplane = vdec_s_fmt,
|
.vidioc_s_fmt_vid_out_mplane = vdec_s_fmt,
|
.vidioc_g_fmt_vid_cap_mplane = vdec_g_fmt,
|
.vidioc_g_fmt_vid_out_mplane = vdec_g_fmt,
|
.vidioc_try_fmt_vid_cap_mplane = vdec_try_fmt,
|
.vidioc_try_fmt_vid_out_mplane = vdec_try_fmt,
|
.vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs,
|
.vidioc_querybuf = v4l2_m2m_ioctl_querybuf,
|
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
|
.vidioc_qbuf = v4l2_m2m_ioctl_qbuf,
|
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
|
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
|
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
|
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
|
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
|
.vidioc_enum_framesizes = vdec_enum_framesizes,
|
.vidioc_subscribe_event = vdec_subscribe_event,
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
.vidioc_try_decoder_cmd = v4l2_m2m_ioctl_try_decoder_cmd,
|
.vidioc_decoder_cmd = vdec_decoder_cmd,
|
.vidioc_g_pixelaspect = vdec_g_pixelaspect,
|
};
|
|
static int m2m_queue_init(void *priv, struct vb2_queue *src_vq,
|
struct vb2_queue *dst_vq)
|
{
|
struct amvdec_session *sess = priv;
|
int ret;
|
|
src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
|
src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
|
src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
|
src_vq->ops = &vdec_vb2_ops;
|
src_vq->mem_ops = &vb2_dma_contig_memops;
|
src_vq->drv_priv = sess;
|
src_vq->buf_struct_size = sizeof(struct dummy_buf);
|
src_vq->min_buffers_needed = 1;
|
src_vq->dev = sess->core->dev;
|
src_vq->lock = &sess->lock;
|
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_DMABUF;
|
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
|
dst_vq->ops = &vdec_vb2_ops;
|
dst_vq->mem_ops = &vb2_dma_contig_memops;
|
dst_vq->drv_priv = sess;
|
dst_vq->buf_struct_size = sizeof(struct dummy_buf);
|
dst_vq->min_buffers_needed = 1;
|
dst_vq->dev = sess->core->dev;
|
dst_vq->lock = &sess->lock;
|
return vb2_queue_init(dst_vq);
|
}
|
|
static int vdec_init_ctrls(struct amvdec_session *sess)
|
{
|
struct v4l2_ctrl_handler *ctrl_handler = &sess->ctrl_handler;
|
int ret;
|
|
ret = v4l2_ctrl_handler_init(ctrl_handler, 1);
|
if (ret)
|
return ret;
|
|
sess->ctrl_min_buf_capture =
|
v4l2_ctrl_new_std(ctrl_handler, NULL,
|
V4L2_CID_MIN_BUFFERS_FOR_CAPTURE, 1, 32, 1,
|
1);
|
|
ret = ctrl_handler->error;
|
if (ret) {
|
v4l2_ctrl_handler_free(ctrl_handler);
|
return ret;
|
}
|
|
return 0;
|
}
|
|
static int vdec_open(struct file *file)
|
{
|
struct amvdec_core *core = video_drvdata(file);
|
struct device *dev = core->dev;
|
const struct amvdec_format *formats = core->platform->formats;
|
struct amvdec_session *sess;
|
int ret;
|
|
sess = kzalloc(sizeof(*sess), GFP_KERNEL);
|
if (!sess)
|
return -ENOMEM;
|
|
sess->core = core;
|
|
sess->m2m_dev = v4l2_m2m_init(&vdec_m2m_ops);
|
if (IS_ERR(sess->m2m_dev)) {
|
dev_err(dev, "Fail to v4l2_m2m_init\n");
|
ret = PTR_ERR(sess->m2m_dev);
|
goto err_free_sess;
|
}
|
|
sess->m2m_ctx = v4l2_m2m_ctx_init(sess->m2m_dev, sess, m2m_queue_init);
|
if (IS_ERR(sess->m2m_ctx)) {
|
dev_err(dev, "Fail to v4l2_m2m_ctx_init\n");
|
ret = PTR_ERR(sess->m2m_ctx);
|
goto err_m2m_release;
|
}
|
|
ret = vdec_init_ctrls(sess);
|
if (ret)
|
goto err_m2m_release;
|
|
sess->pixfmt_cap = formats[0].pixfmts_cap[0];
|
sess->fmt_out = &formats[0];
|
sess->width = 1280;
|
sess->height = 720;
|
sess->pixelaspect.numerator = 1;
|
sess->pixelaspect.denominator = 1;
|
sess->src_buffer_size = SZ_1M;
|
|
INIT_LIST_HEAD(&sess->timestamps);
|
INIT_LIST_HEAD(&sess->bufs_recycle);
|
INIT_WORK(&sess->esparser_queue_work, esparser_queue_all_src);
|
mutex_init(&sess->lock);
|
mutex_init(&sess->bufs_recycle_lock);
|
spin_lock_init(&sess->ts_spinlock);
|
|
v4l2_fh_init(&sess->fh, core->vdev_dec);
|
sess->fh.ctrl_handler = &sess->ctrl_handler;
|
v4l2_fh_add(&sess->fh);
|
sess->fh.m2m_ctx = sess->m2m_ctx;
|
file->private_data = &sess->fh;
|
|
return 0;
|
|
err_m2m_release:
|
v4l2_m2m_release(sess->m2m_dev);
|
err_free_sess:
|
kfree(sess);
|
return ret;
|
}
|
|
static int vdec_close(struct file *file)
|
{
|
struct amvdec_session *sess =
|
container_of(file->private_data, struct amvdec_session, fh);
|
|
v4l2_m2m_ctx_release(sess->m2m_ctx);
|
v4l2_m2m_release(sess->m2m_dev);
|
v4l2_fh_del(&sess->fh);
|
v4l2_fh_exit(&sess->fh);
|
|
mutex_destroy(&sess->lock);
|
mutex_destroy(&sess->bufs_recycle_lock);
|
|
kfree(sess);
|
|
return 0;
|
}
|
|
static const struct v4l2_file_operations vdec_fops = {
|
.owner = THIS_MODULE,
|
.open = vdec_open,
|
.release = vdec_close,
|
.unlocked_ioctl = video_ioctl2,
|
.poll = v4l2_m2m_fop_poll,
|
.mmap = v4l2_m2m_fop_mmap,
|
};
|
|
static irqreturn_t vdec_isr(int irq, void *data)
|
{
|
struct amvdec_core *core = data;
|
struct amvdec_session *sess = core->cur_sess;
|
|
sess->last_irq_jiffies = get_jiffies_64();
|
|
return sess->fmt_out->codec_ops->isr(sess);
|
}
|
|
static irqreturn_t vdec_threaded_isr(int irq, void *data)
|
{
|
struct amvdec_core *core = data;
|
struct amvdec_session *sess = core->cur_sess;
|
|
return sess->fmt_out->codec_ops->threaded_isr(sess);
|
}
|
|
static const struct of_device_id vdec_dt_match[] = {
|
{ .compatible = "amlogic,gxbb-vdec",
|
.data = &vdec_platform_gxbb },
|
{ .compatible = "amlogic,gxm-vdec",
|
.data = &vdec_platform_gxm },
|
{ .compatible = "amlogic,gxl-vdec",
|
.data = &vdec_platform_gxl },
|
{ .compatible = "amlogic,g12a-vdec",
|
.data = &vdec_platform_g12a },
|
{ .compatible = "amlogic,sm1-vdec",
|
.data = &vdec_platform_sm1 },
|
{}
|
};
|
MODULE_DEVICE_TABLE(of, vdec_dt_match);
|
|
static int vdec_probe(struct platform_device *pdev)
|
{
|
struct device *dev = &pdev->dev;
|
struct video_device *vdev;
|
struct amvdec_core *core;
|
struct resource *r;
|
const struct of_device_id *of_id;
|
int irq;
|
int ret;
|
|
core = devm_kzalloc(dev, sizeof(*core), GFP_KERNEL);
|
if (!core)
|
return -ENOMEM;
|
|
core->dev = dev;
|
platform_set_drvdata(pdev, core);
|
|
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dos");
|
core->dos_base = devm_ioremap_resource(dev, r);
|
if (IS_ERR(core->dos_base)) {
|
dev_err(dev, "Couldn't remap DOS memory\n");
|
return PTR_ERR(core->dos_base);
|
}
|
|
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "esparser");
|
core->esparser_base = devm_ioremap_resource(dev, r);
|
if (IS_ERR(core->esparser_base)) {
|
dev_err(dev, "Couldn't remap ESPARSER memory\n");
|
return PTR_ERR(core->esparser_base);
|
}
|
|
core->regmap_ao =
|
syscon_regmap_lookup_by_phandle(dev->of_node,
|
"amlogic,ao-sysctrl");
|
if (IS_ERR(core->regmap_ao)) {
|
dev_err(dev, "Couldn't regmap AO sysctrl\n");
|
return PTR_ERR(core->regmap_ao);
|
}
|
|
core->canvas = meson_canvas_get(dev);
|
if (IS_ERR(core->canvas))
|
return PTR_ERR(core->canvas);
|
|
of_id = of_match_node(vdec_dt_match, dev->of_node);
|
core->platform = of_id->data;
|
|
if (core->platform->revision == VDEC_REVISION_G12A ||
|
core->platform->revision == VDEC_REVISION_SM1) {
|
core->vdec_hevcf_clk = devm_clk_get(dev, "vdec_hevcf");
|
if (IS_ERR(core->vdec_hevcf_clk))
|
return -EPROBE_DEFER;
|
}
|
|
core->dos_parser_clk = devm_clk_get(dev, "dos_parser");
|
if (IS_ERR(core->dos_parser_clk))
|
return -EPROBE_DEFER;
|
|
core->dos_clk = devm_clk_get(dev, "dos");
|
if (IS_ERR(core->dos_clk))
|
return -EPROBE_DEFER;
|
|
core->vdec_1_clk = devm_clk_get(dev, "vdec_1");
|
if (IS_ERR(core->vdec_1_clk))
|
return -EPROBE_DEFER;
|
|
core->vdec_hevc_clk = devm_clk_get(dev, "vdec_hevc");
|
if (IS_ERR(core->vdec_hevc_clk))
|
return -EPROBE_DEFER;
|
|
irq = platform_get_irq_byname(pdev, "vdec");
|
if (irq < 0)
|
return irq;
|
|
ret = devm_request_threaded_irq(core->dev, irq, vdec_isr,
|
vdec_threaded_isr, IRQF_ONESHOT,
|
"vdec", core);
|
if (ret)
|
return ret;
|
|
ret = esparser_init(pdev, core);
|
if (ret)
|
return ret;
|
|
ret = v4l2_device_register(dev, &core->v4l2_dev);
|
if (ret) {
|
dev_err(dev, "Couldn't register v4l2 device\n");
|
return -ENOMEM;
|
}
|
|
vdev = video_device_alloc();
|
if (!vdev) {
|
ret = -ENOMEM;
|
goto err_vdev_release;
|
}
|
|
core->vdev_dec = vdev;
|
core->dev_dec = dev;
|
mutex_init(&core->lock);
|
|
strscpy(vdev->name, "meson-video-decoder", sizeof(vdev->name));
|
vdev->release = video_device_release;
|
vdev->fops = &vdec_fops;
|
vdev->ioctl_ops = &vdec_ioctl_ops;
|
vdev->vfl_dir = VFL_DIR_M2M;
|
vdev->v4l2_dev = &core->v4l2_dev;
|
vdev->lock = &core->lock;
|
vdev->device_caps = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
|
|
video_set_drvdata(vdev, core);
|
|
ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
|
if (ret) {
|
dev_err(dev, "Failed registering video device\n");
|
goto err_vdev_release;
|
}
|
|
return 0;
|
|
err_vdev_release:
|
video_device_release(vdev);
|
v4l2_device_unregister(&core->v4l2_dev);
|
return ret;
|
}
|
|
static int vdec_remove(struct platform_device *pdev)
|
{
|
struct amvdec_core *core = platform_get_drvdata(pdev);
|
|
video_unregister_device(core->vdev_dec);
|
v4l2_device_unregister(&core->v4l2_dev);
|
|
return 0;
|
}
|
|
static struct platform_driver meson_vdec_driver = {
|
.probe = vdec_probe,
|
.remove = vdec_remove,
|
.driver = {
|
.name = "meson-vdec",
|
.of_match_table = vdec_dt_match,
|
},
|
};
|
module_platform_driver(meson_vdec_driver);
|
|
MODULE_DESCRIPTION("Meson video decoder driver for GXBB/GXL/GXM");
|
MODULE_AUTHOR("Maxime Jourdan <mjourdan@baylibre.com>");
|
MODULE_LICENSE("GPL");
|
