Release 4.7 drivers/media/platform/s5p-mfc/s5p_mfc.c

Directory: drivers/media/platform/s5p-mfc
/*
 * Samsung S5P Multi Format Codec v 5.1
 *
 * Copyright (c) 2011 Samsung Electronics Co., Ltd.
 * Kamil Debski, <k.debski@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/clk.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/videodev2.h>
#include <media/v4l2-event.h>
#include <linux/workqueue.h>
#include <linux/of.h>
#include <media/videobuf2-v4l2.h>
#include "s5p_mfc_common.h"
#include "s5p_mfc_ctrl.h"
#include "s5p_mfc_debug.h"
#include "s5p_mfc_dec.h"
#include "s5p_mfc_enc.h"
#include "s5p_mfc_intr.h"
#include "s5p_mfc_opr.h"
#include "s5p_mfc_cmd.h"
#include "s5p_mfc_pm.h"


#define S5P_MFC_NAME		"s5p-mfc"

#define S5P_MFC_DEC_NAME	"s5p-mfc-dec"

#define S5P_MFC_ENC_NAME	"s5p-mfc-enc"


int mfc_debug_level;
module_param_named(debug, mfc_debug_level, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages");

/* Helper functions for interrupt processing */

/* Remove from hw execution round robin */


void clear_work_bit(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	spin_lock(&dev->condlock);
	__clear_bit(ctx->num, &dev->ctx_work_bits);
	spin_unlock(&dev->condlock);
}

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/* Add to hw execution round robin */


void set_work_bit(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;

	spin_lock(&dev->condlock);
	__set_bit(ctx->num, &dev->ctx_work_bits);
	spin_unlock(&dev->condlock);
}

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/* Remove from hw execution round robin */


void clear_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned long flags;

	spin_lock_irqsave(&dev->condlock, flags);
	__clear_bit(ctx->num, &dev->ctx_work_bits);
	spin_unlock_irqrestore(&dev->condlock, flags);
}

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/* Add to hw execution round robin */


void set_work_bit_irqsave(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned long flags;

	spin_lock_irqsave(&dev->condlock, flags);
	__set_bit(ctx->num, &dev->ctx_work_bits);
	spin_unlock_irqrestore(&dev->condlock, flags);
}

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int s5p_mfc_get_new_ctx(struct s5p_mfc_dev *dev)
{
	unsigned long flags;
	int ctx;

	spin_lock_irqsave(&dev->condlock, flags);
	ctx = dev->curr_ctx;
	do {
		ctx = (ctx + 1) % MFC_NUM_CONTEXTS;
		if (ctx == dev->curr_ctx) {
			if (!test_bit(ctx, &dev->ctx_work_bits))
				ctx = -EAGAIN;
			break;
		}
	} while (!test_bit(ctx, &dev->ctx_work_bits));
	spin_unlock_irqrestore(&dev->condlock, flags);

	return ctx;
}

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/* Wake up context wait_queue */


static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason,
			unsigned int err)
{
	ctx->int_cond = 1;
	ctx->int_type = reason;
	ctx->int_err = err;
	wake_up(&ctx->queue);
}

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/* Wake up device wait_queue */


static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason,
			unsigned int err)
{
	dev->int_cond = 1;
	dev->int_type = reason;
	dev->int_err = err;
	wake_up(&dev->queue);
}

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void s5p_mfc_cleanup_queue(struct list_head *lh, struct vb2_queue *vq)
{
	struct s5p_mfc_buf *b;
	int i;

	while (!list_empty(lh)) {
		b = list_entry(lh->next, struct s5p_mfc_buf, list);
		for (i = 0; i < b->b->vb2_buf.num_planes; i++)
			vb2_set_plane_payload(&b->b->vb2_buf, i, 0);
		vb2_buffer_done(&b->b->vb2_buf, VB2_BUF_STATE_ERROR);
		list_del(&b->list);
	}
}

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static void s5p_mfc_watchdog(unsigned long arg)
{
	struct s5p_mfc_dev *dev = (struct s5p_mfc_dev *)arg;

	if (test_bit(0, &dev->hw_lock))
		atomic_inc(&dev->watchdog_cnt);
	if (atomic_read(&dev->watchdog_cnt) >= MFC_WATCHDOG_CNT) {
		/* This means that hw is busy and no interrupts were
                 * generated by hw for the Nth time of running this
                 * watchdog timer. This usually means a serious hw
                 * error. Now it is time to kill all instances and
                 * reset the MFC. */
		mfc_err("Time out during waiting for HW\n");
		queue_work(dev->watchdog_workqueue, &dev->watchdog_work);
	}
	dev->watchdog_timer.expires = jiffies +
					msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
	add_timer(&dev->watchdog_timer);
}

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static void s5p_mfc_watchdog_worker(struct work_struct *work)
{
	struct s5p_mfc_dev *dev;
	struct s5p_mfc_ctx *ctx;
	unsigned long flags;
	int mutex_locked;
	int i, ret;

	dev = container_of(work, struct s5p_mfc_dev, watchdog_work);

	mfc_err("Driver timeout error handling\n");
	/* Lock the mutex that protects open and release.
         * This is necessary as they may load and unload firmware. */
	mutex_locked = mutex_trylock(&dev->mfc_mutex);
	if (!mutex_locked)
		mfc_err("Error: some instance may be closing/opening\n");
	spin_lock_irqsave(&dev->irqlock, flags);

	s5p_mfc_clock_off();

	for (i = 0; i < MFC_NUM_CONTEXTS; i++) {
		ctx = dev->ctx[i];
		if (!ctx)
			continue;
		ctx->state = MFCINST_ERROR;
		s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
		s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
		clear_work_bit(ctx);
		wake_up_ctx(ctx, S5P_MFC_R2H_CMD_ERR_RET, 0);
	}
	clear_bit(0, &dev->hw_lock);
	spin_unlock_irqrestore(&dev->irqlock, flags);

	/* De-init MFC */
	s5p_mfc_deinit_hw(dev);

	/* Double check if there is at least one instance running.
         * If no instance is in memory than no firmware should be present */
	if (dev->num_inst > 0) {
		ret = s5p_mfc_load_firmware(dev);
		if (ret) {
			mfc_err("Failed to reload FW\n");
			goto unlock;
		}
		s5p_mfc_clock_on();
		ret = s5p_mfc_init_hw(dev);
		if (ret)
			mfc_err("Failed to reinit FW\n");
	}
unlock:
	if (mutex_locked)
		mutex_unlock(&dev->mfc_mutex);
}

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andrzej hajda andrzej hajda 2 0.80% 1 20.00%
Total 251 100.00% 5 100.00%



static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_buf *dst_buf;
	struct s5p_mfc_dev *dev = ctx->dev;

	ctx->state = MFCINST_FINISHED;
	ctx->sequence++;
	while (!list_empty(&ctx->dst_queue)) {
		dst_buf = list_entry(ctx->dst_queue.next,
				     struct s5p_mfc_buf, list);
		mfc_debug(2, "Cleaning up buffer: %d\n",
					  dst_buf->b->vb2_buf.index);
		vb2_set_plane_payload(&dst_buf->b->vb2_buf, 0, 0);
		vb2_set_plane_payload(&dst_buf->b->vb2_buf, 1, 0);
		list_del(&dst_buf->list);
		dst_buf->flags |= MFC_BUF_FLAG_EOS;
		ctx->dst_queue_cnt--;
		dst_buf->b->sequence = (ctx->sequence++);

		if (s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_top, ctx) ==
			s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_bot, ctx))
			dst_buf->b->field = V4L2_FIELD_NONE;
		else
			dst_buf->b->field = V4L2_FIELD_INTERLACED;
		dst_buf->b->flags |= V4L2_BUF_FLAG_LAST;

		ctx->dec_dst_flag &= ~(1 << dst_buf->b->vb2_buf.index);
		vb2_buffer_done(&dst_buf->b->vb2_buf, VB2_BUF_STATE_DONE);
	}
}

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philipp zabel philipp zabel 8 3.67% 1 20.00%
andrzej hajda andrzej hajda 6 2.75% 1 20.00%
Total 218 100.00% 5 100.00%



static void s5p_mfc_handle_frame_copy_time(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	struct s5p_mfc_buf  *dst_buf, *src_buf;
	size_t dec_y_addr;
	unsigned int frame_type;

	/* Make sure we actually have a new frame before continuing. */
	frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev);
	if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED)
		return;
	dec_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dec_y_adr, dev);

	/* Copy timestamp / timecode from decoded src to dst and set
           appropriate flags. */
	src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
	list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
		if (vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0)
				== dec_y_addr) {
			dst_buf->b->timecode =
						src_buf->b->timecode;
			dst_buf->b->vb2_buf.timestamp =
						src_buf->b->vb2_buf.timestamp;
			dst_buf->b->flags &=
				~V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
			dst_buf->b->flags |=
				src_buf->b->flags
				& V4L2_BUF_FLAG_TSTAMP_SRC_MASK;
			switch (frame_type) {
			case S5P_FIMV_DECODE_FRAME_I_FRAME:
				dst_buf->b->flags |=
						V4L2_BUF_FLAG_KEYFRAME;
				break;
			case S5P_FIMV_DECODE_FRAME_P_FRAME:
				dst_buf->b->flags |=
						V4L2_BUF_FLAG_PFRAME;
				break;
			case S5P_FIMV_DECODE_FRAME_B_FRAME:
				dst_buf->b->flags |=
						V4L2_BUF_FLAG_BFRAME;
				break;
			default:
				/* Don't know how to handle
                                   S5P_FIMV_DECODE_FRAME_OTHER_FRAME. */
				mfc_debug(2, "Unexpected frame type: %d\n",
						frame_type);
			}
			break;
		}
	}
}

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sakari ailus sakari ailus 23 10.50% 1 12.50%
arun kumar k arun kumar k 23 10.50% 1 12.50%
junghak sung junghak sung 7 3.20% 2 25.00%
marek szyprowski marek szyprowski 1 0.46% 1 12.50%
Total 219 100.00% 8 100.00%



static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	struct s5p_mfc_buf  *dst_buf;
	size_t dspl_y_addr;
	unsigned int frame_type;

	dspl_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_y_adr, dev);
	if (IS_MFCV6_PLUS(dev))
		frame_type = s5p_mfc_hw_call(dev->mfc_ops,
			get_disp_frame_type, ctx);
	else
		frame_type = s5p_mfc_hw_call(dev->mfc_ops,
			get_dec_frame_type, dev);

	/* If frame is same as previous then skip and do not dequeue */
	if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) {
		if (!ctx->after_packed_pb)
			ctx->sequence++;
		ctx->after_packed_pb = 0;
		return;
	}
	ctx->sequence++;
	/* The MFC returns address of the buffer, now we have to
         * check which videobuf does it correspond to */
	list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
		/* Check if this is the buffer we're looking for */
		if (vb2_dma_contig_plane_dma_addr(&dst_buf->b->vb2_buf, 0)
				== dspl_y_addr) {
			list_del(&dst_buf->list);
			ctx->dst_queue_cnt--;
			dst_buf->b->sequence = ctx->sequence;
			if (s5p_mfc_hw_call(dev->mfc_ops,
					get_pic_type_top, ctx) ==
				s5p_mfc_hw_call(dev->mfc_ops,
					get_pic_type_bot, ctx))
				dst_buf->b->field = V4L2_FIELD_NONE;
			else
				dst_buf->b->field =
							V4L2_FIELD_INTERLACED;
			vb2_set_plane_payload(&dst_buf->b->vb2_buf, 0,
						ctx->luma_size);
			vb2_set_plane_payload(&dst_buf->b->vb2_buf, 1,
						ctx->chroma_size);
			clear_bit(dst_buf->b->vb2_buf.index,
							&ctx->dec_dst_flag);

			vb2_buffer_done(&dst_buf->b->vb2_buf, err ?
				VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);

			break;
		}
	}
}

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junghak sung junghak sung 13 4.73% 1 16.67%
marek szyprowski marek szyprowski 1 0.36% 1 16.67%
Total 275 100.00% 6 100.00%

/* Handle frame decoding interrupt */


static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
					unsigned int reason, unsigned int err)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned int dst_frame_status;
	unsigned int dec_frame_status;
	struct s5p_mfc_buf *src_buf;
	unsigned int res_change;

	dst_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
				& S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
	dec_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dec_status, dev)
				& S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
	res_change = (s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev)
				& S5P_FIMV_DEC_STATUS_RESOLUTION_MASK)
				>> S5P_FIMV_DEC_STATUS_RESOLUTION_SHIFT;
	mfc_debug(2, "Frame Status: %x\n", dst_frame_status);
	if (ctx->state == MFCINST_RES_CHANGE_INIT)
		ctx->state = MFCINST_RES_CHANGE_FLUSH;
	if (res_change == S5P_FIMV_RES_INCREASE ||
		res_change == S5P_FIMV_RES_DECREASE) {
		ctx->state = MFCINST_RES_CHANGE_INIT;
		s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
		wake_up_ctx(ctx, reason, err);
		WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
		s5p_mfc_clock_off();
		s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
		return;
	}
	if (ctx->dpb_flush_flag)
		ctx->dpb_flush_flag = 0;

	/* All frames remaining in the buffer have been extracted  */
	if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_EMPTY) {
		if (ctx->state == MFCINST_RES_CHANGE_FLUSH) {
			static const struct v4l2_event ev_src_ch = {
				.type = V4L2_EVENT_SOURCE_CHANGE,
				.u.src_change.changes =
					V4L2_EVENT_SRC_CH_RESOLUTION,
                        };

			s5p_mfc_handle_frame_all_extracted(ctx);
			ctx->state = MFCINST_RES_CHANGE_END;
			v4l2_event_queue_fh(&ctx->fh, &ev_src_ch);

			goto leave_handle_frame;
		} else {
			s5p_mfc_handle_frame_all_extracted(ctx);
		}
	}

	if (dec_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY)
		s5p_mfc_handle_frame_copy_time(ctx);

	/* A frame has been decoded and is in the buffer  */
	if (dst_frame_status == S5P_FIMV_DEC_STATUS_DISPLAY_ONLY ||
	    dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) {
		s5p_mfc_handle_frame_new(ctx, err);
	} else {
		mfc_debug(2, "No frame decode\n");
	}
	/* Mark source buffer as complete */
	if (dst_frame_status != S5P_FIMV_DEC_STATUS_DISPLAY_ONLY
		&& !list_empty(&ctx->src_queue)) {
		src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf,
								list);
		ctx->consumed_stream += s5p_mfc_hw_call(dev->mfc_ops,
						get_consumed_stream, dev);
		if (ctx->codec_mode != S5P_MFC_CODEC_H264_DEC &&
			ctx->codec_mode != S5P_MFC_CODEC_VP8_DEC &&
			ctx->consumed_stream + STUFF_BYTE <
			src_buf->b->vb2_buf.planes[0].bytesused) {
			/* Run MFC again on the same buffer */
			mfc_debug(2, "Running again the same buffer\n");
			ctx->after_packed_pb = 1;
		} else {
			mfc_debug(2, "MFC needs next buffer\n");
			ctx->consumed_stream = 0;
			if (src_buf->flags & MFC_BUF_FLAG_EOS)
				ctx->state = MFCINST_FINISHING;
			list_del(&src_buf->list);
			ctx->src_queue_cnt--;
			if (s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) > 0)
				vb2_buffer_done(&src_buf->b->vb2_buf,
						VB2_BUF_STATE_ERROR);
			else
				vb2_buffer_done(&src_buf->b->vb2_buf,
						VB2_BUF_STATE_DONE);
		}
	}
leave_handle_frame:
	if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING)
				    || ctx->dst_queue_cnt < ctx->pb_count)
		clear_work_bit(ctx);
	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
	wake_up_ctx(ctx, reason, err);
	WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
	s5p_mfc_clock_off();
	/* if suspending, wake up device and do not try_run again*/
	if (test_bit(0, &dev->enter_suspend))
		wake_up_dev(dev, reason, err);
	else
		s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
}

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prathyush k prathyush k 23 3.86% 1 8.33%
jeongtae park jeongtae park 10 1.68% 1 8.33%
junghak sung junghak sung 9 1.51% 1 8.33%
andrzej hajda andrzej hajda 4 0.67% 1 8.33%
Total 596 100.00% 12 100.00%

/* Error handling for interrupt */


static void s5p_mfc_handle_error(struct s5p_mfc_dev *dev,
		struct s5p_mfc_ctx *ctx, unsigned int reason, unsigned int err)
{
	mfc_err("Interrupt Error: %08x\n", err);

	if (ctx != NULL) {
		/* Error recovery is dependent on the state of context */
		switch (ctx->state) {
		case MFCINST_RES_CHANGE_INIT:
		case MFCINST_RES_CHANGE_FLUSH:
		case MFCINST_RES_CHANGE_END:
		case MFCINST_FINISHING:
		case MFCINST_FINISHED:
		case MFCINST_RUNNING:
			/* It is highly probable that an error occurred
                         * while decoding a frame */
			clear_work_bit(ctx);
			ctx->state = MFCINST_ERROR;
			/* Mark all dst buffers as having an error */
			s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
			/* Mark all src buffers as having an error */
			s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
			wake_up_ctx(ctx, reason, err);
			break;
		default:
			clear_work_bit(ctx);
			ctx->state = MFCINST_ERROR;
			wake_up_ctx(ctx, reason, err);
			break;
		}
	}
	WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
	s5p_mfc_clock_off();
	wake_up_dev(dev, reason, err);
	return;
}

Contributors
Person Tokens Prop Commits CommitProp
kamil debski kamil debski 170 96.05% 2 33.33%
pawel osciak pawel osciak 3 1.69% 1 16.67%
andrzej hajda andrzej hajda 3 1.69% 2 33.33%
jonathan mccrohan jonathan mccrohan 1 0.56% 1 16.67%
Total 177 100.00% 6 100.00%

/* Header parsing interrupt handling */


static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx,
				 unsigned int reason, unsigned int err)
{
	struct s5p_mfc_dev *dev;

	if (ctx == NULL)
		return;
	dev = ctx->dev;
	if (ctx->c_ops->post_seq_start) {
		if (ctx->c_ops->post_seq_start(ctx))
			mfc_err("post_seq_start() failed\n");
	} else {
		ctx->img_width = s5p_mfc_hw_call(dev->mfc_ops, get_img_width,
				dev);
		ctx->img_height = s5p_mfc_hw_call(dev->mfc_ops, get_img_height,
				dev);

		s5p_mfc_hw_call(dev->mfc_ops, dec_calc_dpb_size, ctx);

		ctx->pb_count = s5p_mfc_hw_call(dev->mfc_ops, get_dpb_count,
				dev);
		ctx->mv_count = s5p_mfc_hw_call(dev->mfc_ops, get_mv_count,
				dev);
		if (ctx->img_width == 0 || ctx->img_height == 0)
			ctx->state = MFCINST_ERROR;
		else
			ctx->state = MFCINST_HEAD_PARSED;

		if ((ctx->codec_mode == S5P_MFC_CODEC_H264_DEC ||
			ctx->codec_mode == S5P_MFC_CODEC_H264_MVC_DEC) &&
				!list_empty(&ctx->src_queue)) {
			struct s5p_mfc_buf *src_buf;
			src_buf = list_entry(ctx->src_queue.next,
					struct s5p_mfc_buf, list);
			if (s5p_mfc_hw_call(dev->mfc_ops, get_consumed_stream,
						dev) <
					src_buf->b->vb2_buf.planes[0].bytesused)
				ctx->head_processed = 0;
			else
				ctx->head_processed = 1;
		} else {
			ctx->head_processed = 1;
		}
	}
	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
	clear_work_bit(ctx);
	WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
	s5p_mfc_clock_off();
	s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
	wake_up_ctx(ctx, reason, err);
}

Contributors
Person Tokens Prop Commits CommitProp
kamil debski kamil debski 149 47.45% 1 10.00%
jeongtae park jeongtae park 108 34.39% 1 10.00%
arun kumar k arun kumar k 46 14.65% 3 30.00%
junghak sung junghak sung 3 0.96% 1 10.00%
andrzej hajda andrzej hajda 3 0.96% 1 10.00%
pawel osciak pawel osciak 3 0.96% 1 10.00%
sachin kamat sachin kamat 1 0.32% 1 10.00%
julia lawall julia lawall 1 0.32% 1 10.00%
Total 314 100.00% 10 100.00%

/* Header parsing interrupt handling */


static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx,
				 unsigned int reason, unsigned int err)
{
	struct s5p_mfc_buf *src_buf;
	struct s5p_mfc_dev *dev;

	if (ctx == NULL)
		return;
	dev = ctx->dev;
	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
	ctx->int_type = reason;
	ctx->int_err = err;
	ctx->int_cond = 1;
	clear_work_bit(ctx);
	if (err == 0) {
		ctx->state = MFCINST_RUNNING;
		if (!ctx->dpb_flush_flag && ctx->head_processed) {
			if (!list_empty(&ctx->src_queue)) {
				src_buf = list_entry(ctx->src_queue.next,
					     struct s5p_mfc_buf, list);
				list_del(&src_buf->list);
				ctx->src_queue_cnt--;
				vb2_buffer_done(&src_buf->b->vb2_buf,
						VB2_BUF_STATE_DONE);
			}
		} else {
			ctx->dpb_flush_flag = 0;
		}
		WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);

		s5p_mfc_clock_off();

		wake_up(&ctx->queue);
		s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
	} else {
		WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);

		s5p_mfc_clock_off();

		wake_up(&ctx->queue);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
kamil debski kamil debski 203 87.50% 1 12.50%
arun kumar k arun kumar k 12 5.17% 1 12.50%
pawel osciak pawel osciak 6 2.59% 1 12.50%
jeongtae park jeongtae park 4 1.72% 1 12.50%
junghak sung junghak sung 3 1.29% 1 12.50%
andrzej hajda andrzej hajda 3 1.29% 2 25.00%
sachin kamat sachin kamat 1 0.43% 1 12.50%
Total 232 100.00% 8 100.00%



static void s5p_mfc_handle_stream_complete(struct s5p_mfc_ctx *ctx)
{
	struct s5p_mfc_dev *dev = ctx->dev;
	struct s5p_mfc_buf *mb_entry;

	mfc_debug(2, "Stream completed\n");

	ctx->state = MFCINST_FINISHED;

	if (!list_empty(&ctx->dst_queue)) {
		mb_entry = list_entry(ctx->dst_queue.next, struct s5p_mfc_buf,
									list);
		list_del(&mb_entry->list);
		ctx->dst_queue_cnt--;
		vb2_set_plane_payload(&mb_entry->b->vb2_buf, 0, 0);
		vb2_buffer_done(&mb_entry->b->vb2_buf, VB2_BUF_STATE_DONE);
	}

	clear_work_bit(ctx);

	WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);

	s5p_mfc_clock_off();
	wake_up(&ctx->queue);
	s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
}

Contributors
Person Tokens Prop Commits CommitProp
andrzej hajda andrzej hajda 134 90.54% 3 50.00%
arun kumar k arun kumar k 6 4.05% 1 16.67%
junghak sung junghak sung 6 4.05% 1 16.67%
sachin kamat sachin kamat 2 1.35% 1 16.67%
Total 148 100.00% 6 100.00%

/* Interrupt processing */


static irqreturn_t s5p_mfc_irq(int irq, void *priv)
{
	struct s5p_mfc_dev *dev = priv;
	struct s5p_mfc_ctx *ctx;
	unsigned int reason;
	unsigned int err;

	mfc_debug_enter();
	/* Reset the timeout watchdog */
	atomic_set(&dev->watchdog_cnt, 0);
	spin_lock(&dev->irqlock);
	ctx = dev->ctx[dev->curr_ctx];
	/* Get the reason of interrupt and the error code */
	reason = s5p_mfc_hw_call(dev->mfc_ops, get_int_reason, dev);
	err = s5p_mfc_hw_call(dev->mfc_ops, get_int_err, dev);
	mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err);
	switch (reason) {
	case S5P_MFC_R2H_CMD_ERR_RET:
		/* An error has occurred */
		if (ctx->state == MFCINST_RUNNING &&
			s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) >=
				dev->warn_start)
			s5p_mfc_handle_frame(ctx, reason, err);
		else
			s5p_mfc_handle_error(dev, ctx, reason, err);
		clear_bit(0, &dev->enter_suspend);
		break;

	case S5P_MFC_R2H_CMD_SLICE_DONE_RET:
	case S5P_MFC_R2H_CMD_FIELD_DONE_RET:
	case S5P_MFC_R2H_CMD_FRAME_DONE_RET:
		if (ctx->c_ops->post_frame_start) {
			if (ctx->c_ops->post_frame_start(ctx))
				mfc_err("post_frame_start() failed\n");

			if (ctx->state == MFCINST_FINISHING &&
						list_empty(&ctx->ref_queue)) {
				s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
				s5p_mfc_handle_stream_complete(ctx);
				break;
			}
			s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
			wake_up_ctx(ctx, reason, err);
			WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0);
			s5p_mfc_clock_off();
			s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
		} else {
			s5p_mfc_handle_frame(ctx, reason, err);
		}
		break;

	case S5P_MFC_R2H_CMD_SEQ_DONE_RET:
		s5p_mfc_handle_seq_done(ctx, reason, err);
		break;

	case S5P_MFC_R2H_CMD_OPEN_INSTANCE_RET:
		ctx->inst_no = s5p_mfc_hw_call(dev->mfc_ops, get_inst_no, dev);
		ctx->state = MFCINST_GOT_INST;
		clear_work_bit(ctx);
		wake_up(&ctx->queue);
		goto irq_cleanup_hw;

	case S5P_MFC_R2H_CMD_CLOSE_INSTANCE_RET:
		clear_work_bit(ctx);
		ctx->inst_no = MFC_NO_INSTANCE_SET;
		ctx->state = MFCINST_FREE;
		wake_up(&ctx->queue);
		goto irq_cleanup_hw;

	case S5P_MFC_R2H_CMD_SYS_INIT_RET:
	case S5P_MFC_R2H_CMD_FW_STATUS_RET:
	case S5P_MFC_R2H_CMD_SLEEP_RET:
	case S5P_MFC_R2H_CMD_WAKEUP_RET:
		if (ctx)
			clear_work_bit(ctx);
		s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
		wake_up_dev(dev, reason, err);
		clear_bit(0, &dev->hw_lock);
		clear_bit(0, &dev->enter_suspend);
		break;

	case S5P_MFC_R2H_CMD_INIT_BUFFERS_RET:
		s5p_mfc_handle_init_buffers(ctx, reason, err);
		break;

	case S5P_MFC_R2H_CMD_COMPLETE_SEQ_RET:
		s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
		ctx->int_type = reason;
		ctx->int_err = err;
		s5p_mfc_handle_stream_complete(ctx);
		break;

	case S5P_MFC_R2H_CMD_DPB_FLUSH_RET:
		clear_work_bit(ctx);
		ctx->state = MFCINST_RUNNING;
		wake_up(&ctx->queue);
		goto irq_cleanup_hw;

	default:
		mfc_debug(2, "Unknown int reason\n");
		s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
	}
	spin_unlock(&dev->irqlock);
	mfc_debug_leave();
	return IRQ_HANDLED;
irq_cleanup_hw:
	s5p_mfc_hw_call(dev->mfc_ops, clear_int_flags, dev);
	ctx->int_type = reason;
	ctx->int_err = err;
	ctx->int_cond = 1;
	if (test_and_clear_bit(0, &dev->hw_lock) == 0)
		mfc_err("Failed to unlock hw\n");

	s5p_mfc_clock_off();

	s5p_mfc_hw_call(dev->mfc_ops, try_run, dev);
	spin_unlock(&dev->irqlock);
	mfc_debug(2, "Exit via irq_cleanup_hw\n");
	return IRQ_HANDLED;
}

Contributors
Person Tokens Prop Commits CommitProp
kamil debski kamil debski 410 64.87% 2 18.18%
arun kumar k arun kumar k 116 18.35% 2 18.18%
andrzej hajda andrzej hajda 96 15.19% 4 36.36%
pawel osciak pawel osciak 9 1.42% 2 18.18%
jonathan mccrohan jonathan mccrohan 1 0.16% 1 9.09%
Total 632 100.00% 11 100.00%

/* Open an MFC node */


static int s5p_mfc_open(struct file *file)
{
	struct video_device *vdev = video_devdata(file);
	struct s5p_mfc_dev *dev = video_drvdata(file);
	struct s5p_mfc_ctx *ctx = NULL;
	struct vb2_queue *q;
	int ret = 0;

	mfc_debug_enter();
	if (mutex_lock_interruptible(&dev->mfc_mutex))
		return -ERESTARTSYS;
	dev->num_inst++;	/* It is guarded by mfc_mutex in vfd */
	/* Allocate memory for context */
	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
	if (!ctx) {
		mfc_err("Not enough memory\n");
		ret = -ENOMEM;
		goto err_alloc;
	}
	v4l2_fh_init(&ctx->fh, vdev);
	file->private_data = &ctx->fh;
	v4l2_fh_add(&ctx->fh);
	ctx->dev = dev;
	INIT_LIST_HEAD(&ctx->src_queue);
	INIT_LIST_HEAD(&ctx->dst_queue);
	ctx->src_queue_cnt = 0;
	ctx->dst_queue_cnt = 0;
	/* Get context number */
	ctx->num = 0;
	while (dev->ctx[ctx->num]) {
		ctx->num++;
		if (ctx->num >= MFC_NUM_CONTEXTS) {
			mfc_err("Too many open contexts\n");
			ret = -EBUSY;
			goto err_no_ctx;
		}
	}
	/* Mark context as idle */
	clear_work_bit_irqsave(ctx);
	dev->ctx[ctx->num] = ctx;
	if (vdev == dev->vfd_dec) {
		ctx->type = MFCINST_DECODER;
		ctx->c_ops = get_dec_codec_ops();
		s5p_mfc_dec_init(ctx);
		/* Setup ctrl handler */
		ret = s5p_mfc_dec_ctrls_setup(ctx);
		if (ret) {
			mfc_err("Failed to setup mfc controls\n");
			goto err_ctrls_setup;
		}
	} else if (vdev == dev->vfd_enc) {
		ctx->type = MFCINST_ENCODER;
		ctx->c_ops = get_enc_codec_ops();
		/* only for encoder */
		INIT_LIST_HEAD(&ctx->ref_queue);
		ctx->ref_queue_cnt = 0;
		s5p_mfc_enc_init(ctx);
		/* Setup ctrl handler */
		ret = s5p_mfc_enc_ctrls_setup(ctx);
		if (ret) {
			mfc_err("Failed to setup mfc controls\n");
			goto err_ctrls_setup;
		}
	} else {
		ret = -ENOENT;
		goto err_bad_node;
	}
	ctx->fh.ctrl_handler = &ctx->ctrl_handler;
	ctx->inst_no = MFC_NO_INSTANCE_SET;
	/* Load firmware if this is the first instance */
	if (dev->num_inst == 1) {
		dev->watchdog_timer.expires = jiffies +
					msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
		add_timer(&dev->watchdog_timer);
		ret = s5p_mfc_power_on();
		if (ret < 0) {
			mfc_err("power on failed\n");
			goto err_pwr_enable;
		}
		s5p_mfc_clock_on();
		ret = s5p_mfc_load_firmware(dev);
		if (ret) {
			s5p_mfc_clock_off();
			goto err_load_fw;
		}
		/* Init the FW */
		ret = s5p_mfc_init_hw(dev);
		s5p_mfc_clock_off();
		if (ret)
			goto err_init_hw;
	}
	/* Init videobuf2 queue for CAPTURE */
	q = &ctx->vq_dst;
	q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
	q->drv_priv = &ctx->fh;
	q->lock = &dev->mfc_mutex;
	if (vdev == dev->vfd_dec) {
		q->io_modes = VB2_MMAP;
		q->ops = get_dec_queue_ops();
	} else if (vdev == dev->vfd_enc) {
		q->io_modes = VB2_MMAP | VB2_USERPTR;
		q->ops = get_enc_queue_ops();
	} else {
		ret = -ENOENT;
		goto err_queue_init;
	}
	q->mem_ops = &vb2_dma_contig_memops;
	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
	ret = vb2_queue_init(q);
	if (ret) {
		mfc_err("Failed to initialize videobuf2 queue(capture)\n");
		goto err_queue_init;
	}
	/* Init videobuf2 queue for OUTPUT */
	q = &ctx->vq_src;
	q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
	q->io_modes = VB2_MMAP;
	q->drv_priv = &ctx->fh;
	q->lock = &dev->mfc_mutex;
	if (vdev == dev->vfd_dec) {
		q->io_modes = VB2_MMAP;
		q->ops = get_dec_queue_ops();
	} else if (vdev == dev->vfd_enc) {
		q->io_modes = VB2_MMAP | VB2_USERPTR;
		q->ops = get_enc_queue_ops();
	} else {
		ret = -ENOENT;
		goto err_queue_init;
	}
	/* One way to indicate end-of-stream for MFC is to set the
         * bytesused == 0. However by default videobuf2 handles bytesused
         * equal to 0 as a special case and changes its value to the size
         * of the buffer. Set the allow_zero_bytesused flag so that videobuf2
         * will keep the value of bytesused intact.
         */
	q->allow_zero_bytesused = 1;
	q->mem_ops = &vb2_dma_contig_memops;
	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
	ret = vb2_queue_init(q);
	if (ret) {
		mfc_err("Failed to initialize videobuf2 queue(output)\n");
		goto err_queue_init;
	}
	init_waitqueue_head(&ctx->queue);
	mutex_unlock(&dev->mfc_mutex);
	mfc_debug_leave();
	return ret;
	/* Deinit when failure occurred */
err_queue_init:
	if (dev->num_inst == 1)
		s5p_mfc_deinit_hw(dev);
err_init_hw:
err_load_fw:
err_pwr_enable:
	if (dev->num_inst == 1) {
		if (s5p_mfc_power_off() < 0)
			mfc_err("power off failed\n");
		del_timer_sync(&dev->watchdog_timer);
	}
err_ctrls_setup:
	s5p_mfc_dec_ctrls_delete(ctx);
err_bad_node:
	dev->ctx[ctx->num] = NULL;
err_no_ctx:
	v4l2_fh_del(&ctx->fh);
	v4l2_fh_exit(&ctx->fh);
	kfree(ctx);
err_alloc:
	dev->num_inst--;
	mutex_unlock(&dev->mfc_mutex);
	mfc_debug_leave();
	return ret;
}

Contributors
Person Tokens Prop Commits CommitProp
kamil debski kamil debski 779 89.44% 6 37.50%
marek szyprowski marek szyprowski 34 3.90% 1 6.25%
hans verkuil hans verkuil 30 3.44% 1 6.25%
arun kumar k arun kumar k 10 1.15% 1 6.25%
prabhakar lad prabhakar lad 9 1.03% 1 6.25%
sachin kamat sachin kamat 3 0.34% 1 6.25%
sakari ailus sakari ailus 2 0.23% 1 6.25%
zhaowei yuan zhaowei yuan 1 0.11% 1 6.25%
andrzej hajda andrzej hajda 1 0.11% 1 6.25%
pawel osciak pawel osciak 1 0.11% 1 6.25%
jonathan mccrohan jonathan mccrohan 1 0.11% 1 6.25%
Total 871 100.00% 16 100.00%

/* Release MFC context */


static int s5p_mfc_release(struct file *file)
{
	struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
	struct s5p_mfc_dev *dev = ctx->dev;

	mfc_debug_enter();
	mutex_lock(&dev->mfc_mutex);
	s5p_mfc_clock_on();
	vb2_queue_release(&ctx->vq_src);
	vb2_queue_release(&ctx->vq_dst);
	/* Mark context as idle */
	clear_work_bit_irqsave(ctx);
	/* If instance was initialised and not yet freed,
         * return instance and free resources */
	if (ctx->state != MFCINST_FREE && ctx->state != MFCINST_INIT) {
		mfc_debug(2, "Has to free instance\n");
		s5p_mfc_close_mfc_inst(dev, ctx);
	}
	/* hardware locking scheme */
	if (dev->curr_ctx == ctx->num)
		clear_bit(0, &dev->hw_lock);
	dev->num_inst--;
	if (dev->num_inst == 0) {
		mfc_debug(2, "Last instance\n");
		s5p_mfc_deinit_hw(dev);
		del_timer_sync(&dev->watchdog_timer);
		if (s5p_mfc_power_off() < 0)
			mfc_err("Power off failed\n");
	}
	mfc_debug(2, "Shutting down clock\n");
	s5p_mfc_clock_off();
	dev->ctx[ctx->num] = NULL;
	s5p_mfc_dec_ctrls_delete(ctx);
	v4l2_fh_del(&ctx->fh);
	v4l2_fh_exit(&ctx->fh);
	kfree(ctx);
	mfc_debug_leave();
	mutex_unlock(&dev->mfc_mutex);
	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
kamil debski kamil debski 193 84.65% 2 25.00%
hans verkuil hans verkuil 16 7.02% 1 12.50%
pawel osciak pawel osciak 10 4.39% 2 25.00%
arun kumar k arun kumar k 7 3.07% 1 12.50%
andrzej hajda andrzej hajda 1 0.44% 1 12.50%
sachin kamat sachin kamat 1 0.44% 1 12.50%
Total 228 100.00% 8 100.00%

/* Poll */


static unsigned int s5p_mfc_poll(struct file *file,
				 struct poll_table_struct *wait)
{
	struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
	struct s5p_mfc_dev *dev = ctx->dev;
	struct vb2_queue *src_q, *dst_q;
	struct vb2_buffer *src_vb = NULL, *dst_vb = NULL;
	unsigned int rc = 0;
	unsigned long flags;

	mutex_lock(&dev->mfc_mutex);
	src_q = &ctx->vq_src;
	dst_q = &ctx->vq_dst;
	/*
         * There has to be at least one buffer queued on each queued_list, which
         * means either in driver already or waiting for driver to claim it
         * and start processing.
         */
	if ((!src_q->streaming || list_empty(&src_q->queued_list))
		&& (!dst_q->streaming || list_empty(&dst_q->queued_list))) {
		rc = POLLERR;
		goto end;
	}
	mutex_unlock(&dev->mfc_mutex);
	poll_wait(file, &ctx->fh.wait, wait);
	poll_wait(file, &src_q->done_wq, wait);
	poll_wait(file, &dst_q->done_wq, wait);
	mutex_lock(&dev->mfc_mutex);
	if (v4l2_event_pending(&ctx->fh))
		rc |= POLLPRI;
	spin_lock_irqsave(&src_q->done_lock, flags);
	if (!list_empty(&src_q->done_list))
		src_vb = list_first_entry(&src_q->done_list, struct vb2_buffer,
								done_entry);
	if (src_vb && (src_vb->state == VB2_BUF_STATE_DONE
				|| src_vb->state == VB2_BUF_STATE_ERROR))
		rc |= POLLOUT | POLLWRNORM;
	spin_unlock_irqrestore(&src_q->done_lock, flags);
	spin_lock_irqsave(&dst_q->done_lock, flags);
	if (!list_empty(&dst_q->done_list))
		dst_vb = list_first_entry(&dst_q->done_list, struct vb2_buffer,
								done_entry);
	if (dst_vb && (dst_vb->state == VB2_BUF_STATE_DONE
				|| dst_vb->state == VB2_BUF_STATE_ERROR))
		rc |= POLLIN | POLLRDNORM;
	spin_unlock_irqrestore(&dst_q->done_lock, flags);
end:
	mutex_unlock(&dev->mfc_mutex);
	return rc;
}

Contributors
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kamil debski kamil debski 309 87.54% 1 33.33%
andrzej hajda andrzej hajda 28 7.93% 1 33.33%
hans verkuil hans verkuil 16 4.53% 1 33.33%
Total 353 100.00% 3 100.00%

/* Mmap */


static int s5p_mfc_mmap(struct file *file, struct vm_area_struct *vma)
{
	struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data);
	struct s5p_mfc_dev *dev = ctx->dev;
	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
	int ret;

	if (mutex_lock_interruptible(&dev->mfc_mutex))
		return -ERESTARTSYS;
	if (offset < DST_QUEUE_OFF_BASE) {
		mfc_debug(2, "mmaping source\n");
		ret = vb2_mmap(&ctx->vq_src, vma);
	} else {		/* capture */
		mfc_debug(2, "mmaping destination\n");
		vma->vm_pgoff -= (DST_QUEUE_OFF_BASE >> PAGE_SHIFT);
		ret = vb2_mmap(&ctx->vq_dst, vma);
	}
	mutex_unlock(&dev->mfc_mutex);
	return ret;
}

Contributors
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kamil debski kamil debski 104 77.04% 1 50.00%
hans verkuil hans verkuil 31 22.96% 1 50.00%
Total 135 100.00% 2 100.00%

/* v4l2 ops */

static const struct v4l2_file_operations s5p_mfc_fops = {
	.owner = THIS_MODULE,
	.open = s5p_mfc_open,
	.release = s5p_mfc_release,
	.poll = s5p_mfc_poll,
	.unlocked_ioctl = video_ioctl2,
	.mmap = s5p_mfc_mmap,
};



static int match_child(struct device *dev, void *data)
{
	if (!dev_name(dev))
		return 0;
	return !strcmp(dev_name(dev), (char *)data);
}

Contributors
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kamil debski kamil debski 42 100.00% 1 100.00%
Total 42 100.00% 1 100.00%

static void *mfc_get_drv_data(struct platform_device *pdev);



static int s5p_mfc_alloc_memdevs(struct s5p_mfc_dev *dev)
{
	unsigned int mem_info[2] = { };

	dev->mem_dev_l = devm_kzalloc(&dev->plat_dev->dev,
			sizeof(struct device), GFP_KERNEL);
	if (!dev->mem_dev_l) {
		mfc_err("Not enough memory\n");
		return -ENOMEM;
	}
	device_initialize(dev->mem_dev_l);
	of_property_read_u32_array(dev->plat_dev->dev.of_node,
			"samsung,mfc-l", mem_info, 2);
	if (dma_declare_coherent_memory(dev->mem_dev_l, mem_info[0],
				mem_info[0], mem_info[1],
				DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0) {
		mfc_err("Failed to declare coherent memory for\n"
		"MFC device\n");
		return -ENOMEM;
	}

	dev->mem_dev_r = devm_kzalloc(&dev->plat_dev->dev,
			sizeof(struct device), GFP_KERNEL);
	if (!dev->mem_dev_r) {
		mfc_err("Not enough memory\n");
		return -ENOMEM;
	}
	device_initialize(dev->mem_dev_r);
	of_property_read_u32_array(dev->plat_dev->dev.of_node,
			"samsung,mfc-r", mem_info, 2);
	if (dma_declare_coherent_memory(dev->mem_dev_r, mem_info[0],
				mem_info[0], mem_info[1],
				DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0) {
		pr_err("Failed to declare coherent memory for\n"
		"MFC device\n");
		return -ENOMEM;
	}
	return 0;
}

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arun kumar k arun kumar k 233 99.15% 1 50.00%
sylwester nawrocki sylwester nawrocki 2 0.85% 1 50.00%
Total 235 100.00% 2 100.00%

/* MFC probe function */


static int s5p_mfc_probe(struct platform_device *pdev)
{
	struct s5p_mfc_dev *dev;
	struct video_device *vfd;
	struct resource *res;
	int ret;

	pr_debug("%s++\n", __func__);
	dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
	if (!dev) {
		dev_err(&pdev->dev, "Not enough memory for MFC device\n");
		return -ENOMEM;
	}

	spin_lock_init(&dev->irqlock);
	spin_lock_init(&dev->condlock);
	dev->plat_dev = pdev;
	if (!dev->plat_dev) {
		dev_err(&pdev->dev, "No platform data specified\n");
		return -ENODEV;
	}

	dev->variant = mfc_get_drv_data(pdev);

	ret = s5p_mfc_init_pm(dev);
	if (ret < 0) {
		dev_err(&pdev->dev, "failed to get mfc clock source\n");
		return ret;
	}

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);

	dev->regs_base = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(dev->regs_base))
		return PTR_ERR(dev->regs_base);

	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
	if (res == NULL) {
		dev_err(&pdev->dev, "failed to get irq resource\n");
		ret = -ENOENT;
		goto err_res;
	}
	dev->irq = res->start;
	ret = devm_request_irq(&pdev->dev, dev->irq, s5p_mfc_irq,
					0, pdev->name, dev);
	if (ret) {
		dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret);
		goto err_res;
	}

	if (pdev->dev.of_node) {
		ret = s5p_mfc_alloc_memdevs(dev);
		if (ret < 0)
			goto err_res;
	} else {
		dev->mem_dev_l = device_find_child(&dev->plat_dev->dev,
				"s5p-mfc-l", match_child);
		if (!dev->mem_dev_l) {
			mfc_err("Mem child (L) device get failed\n");
			ret = -ENODEV;
			goto err_res;
		}
		dev->mem_dev_r = device_find_child(&dev->plat_dev->dev,
				"s5p-mfc-r", match_child);
		if (!dev->mem_dev_r) {
			mfc_err("Mem child (R) device get failed\n");
			ret = -ENODEV;
			goto err_res;
		}
	}

	dev->alloc_ctx[0] = vb2_dma_contig_init_ctx(dev->mem_dev_l);
	if (IS_ERR(dev->alloc_ctx[0])) {
		ret = PTR_ERR(dev->alloc_ctx[0]);
		goto err_res;
	}
	dev->alloc_ctx[1] = vb2_dma_contig_init_ctx(dev->mem_dev_r);
	if (IS_ERR(dev->alloc_ctx[1])) {
		ret = PTR_ERR(dev->alloc_ctx[1]);
		goto err_mem_init_ctx_1;
	}

	mutex_init(&dev->mfc_mutex);

	ret = s5p_mfc_alloc_firmware(dev);
	if (ret)
		goto err_alloc_fw;

	ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
	if (ret)
		goto err_v4l2_dev_reg;
	init_waitqueue_head(&dev->queue);

	/* decoder */
	vfd = video_device_alloc();
	if (!vfd) {
		v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
		ret = -ENOMEM;
		goto err_dec_alloc;
	}
	vfd->fops	= &s5p_mfc_fops;
	vfd->ioctl_ops	= get_dec_v4l2_ioctl_ops();
	vfd->release	= video_device_release;
	vfd->lock	= &dev->mfc_mutex;
	vfd->v4l2_dev	= &dev->v4l2_dev;
	vfd->vfl_dir	= VFL_DIR_M2M;
	snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_DEC_NAME);
	dev->vfd_dec	= vfd;
	ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
	if (ret) {
		v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
		video_device_release(vfd);
		goto err_dec_reg;
	}
	v4l2_info(&dev->v4l2_dev,
		  "decoder registered as /dev/video%d\n", vfd->num);
	video_set_drvdata(vfd, dev);

	/* encoder */
	vfd = video_device_alloc();
	if (!vfd) {
		v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n");
		ret = -ENOMEM;
		goto err_enc_alloc;
	}
	vfd->fops	= &s5p_mfc_fops;
	vfd->ioctl_ops	= get_enc_v4l2_ioctl_ops();
	vfd->release	= video_device_release;
	vfd->lock	= &dev->mfc_mutex;
	vfd->v4l2_dev	= &dev->v4l2_dev;
	vfd->vfl_dir	= VFL_DIR_M2M;
	snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_ENC_NAME);
	dev->vfd_enc	= vfd;
	ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
	if (ret) {
		v4l2_err(&dev->v4l2_dev, "Failed to register video device\n");
		video_device_release(vfd);
		goto err_enc_reg;
	}
	v4l2_info(&dev->v4l2_dev,
		  "encoder registered as /dev/video%d\n", vfd->num);
	video_set_drvdata(vfd, dev);
	platform_set_drvdata(pdev, dev);

	dev->hw_lock = 0;
	dev->watchdog_workqueue = create_singlethread_workqueue(S5P_MFC_NAME);
	INIT_WORK(&dev->watchdog_work, s5p_mfc_watchdog_worker);
	atomic_set(&dev->watchdog_cnt, 0);
	init_timer(&dev->watchdog_timer);
	dev->watchdog_timer.data = (unsigned long)dev;
	dev->watchdog_timer.function = s5p_mfc_watchdog;

	/* Initialize HW ops and commands based on MFC version */
	s5p_mfc_init_hw_ops(dev);
	s5p_mfc_init_hw_cmds(dev);
	s5p_mfc_init_regs(dev);

	pr_debug("%s--\n", __func__);
	return 0;

/* Deinit MFC if probe had failed */
err_enc_reg:
	video_device_release(dev->vfd_enc);
err_enc_alloc:
	video_unregister_device(dev->vfd_dec);
err_dec_reg:
	video_device_release(dev->vfd_dec);
err_dec_alloc:
	v4l2_device_unregister(&dev->v4l2_dev);
err_v4l2_dev_reg:
	s5p_mfc_release_firmware(dev);
err_alloc_fw:
	vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
err_mem_init_ctx_1:
	vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
err_res:
	s5p_mfc_final_pm(dev);

	pr_debug("%s-- with error\n", __func__);
	return ret;

}

Contributors
Person Tokens Prop Commits CommitProp
kamil debski kamil debski 921 89.59% 3 18.75%
arun kumar k arun kumar k 49 4.77% 5 31.25%
sachin kamat sachin kamat 28 2.72% 2 12.50%
thierry reding thierry reding 8 0.78% 1 6.25%
wei yongjun wei yongjun 6 0.58% 1 6.25%
hans verkuil hans verkuil 6 0.58% 1 6.25%
kiran avnd kiran avnd 5 0.49% 1 6.25%
joonyoung shim joonyoung shim 4 0.39% 1 6.25%
michael opdenacker michael opdenacker 1 0.10% 1 6.25%
Total 1028 100.00% 16 100.00%

/* Remove the driver */


static int s5p_mfc_remove(struct platform_device *pdev)
{
	struct s5p_mfc_dev *dev = platform_get_drvdata(pdev);

	v4l2_info(&dev->v4l2_dev, "Removing %s\n", pdev->name);

	del_timer_sync(&dev->watchdog_timer);
	flush_workqueue(dev->watchdog_workqueue);
	destroy_workqueue(dev->watchdog_workqueue);

	video_unregister_device(dev->vfd_enc);
	video_unregister_device(dev->vfd_dec);
	v4l2_device_unregister(&dev->v4l2_dev);
	s5p_mfc_release_firmware(dev);
	vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
	vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
	if (pdev->dev.of_node) {
		put_device(dev->mem_dev_l);
		put_device(dev->mem_dev_r);
	}

	s5p_mfc_final_pm(dev);
	return 0;
}

Contributors
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kamil debski kamil debski 112 82.35% 2 66.67%
arun kumar k arun kumar k 24 17.65% 1 33.33%
Total 136 100.00% 3 100.00%

#ifdef CONFIG_PM_SLEEP



static int s5p_mfc_suspend(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
	int ret;

	if (m_dev->num_inst == 0)
		return 0;

	if (test_and_set_bit(0, &m_dev->enter_suspend) != 0) {
		mfc_err("Error: going to suspend for a second time\n");
		return -EIO;
	}

	/* Check if we're processing then wait if it necessary. */
	while (test_and_set_bit(0, &m_dev->hw_lock) != 0) {
		/* Try and lock the HW */
		/* Wait on the interrupt waitqueue */
		ret = wait_event_interruptible_timeout(m_dev->queue,
			m_dev->int_cond, msecs_to_jiffies(MFC_INT_TIMEOUT));
		if (ret == 0) {
			mfc_err("Waiting for hardware to finish timed out\n");
			clear_bit(0, &m_dev->enter_suspend);
			return -EIO;
		}
	}

	ret = s5p_mfc_sleep(m_dev);
	if (ret) {
		clear_bit(0, &m_dev->enter_suspend);
		clear_bit(0, &m_dev->hw_lock);
	}
	return ret;
}

Contributors
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kamil debski kamil debski 125 73.53% 1 33.33%
prathyush k prathyush k 41 24.12% 1 33.33%
sachin kamat sachin kamat 4 2.35% 1 33.33%
Total 170 100.00% 3 100.00%



static int s5p_mfc_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);

	if (m_dev->num_inst == 0)
		return 0;
	return s5p_mfc_wakeup(m_dev);
}
Contributors
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kamil debski kamil debski 48 100.00% 1 100.00%
Total 48 100.00% 1 100.00%

#endif

#ifdef CONFIG_PM


static int s5p_mfc_runtime_suspend(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);

	atomic_set(&m_dev->pm.power, 0);
	return 0;
}

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kamil debski kamil debski 46 100.00% 1 100.00%
Total 46 100.00% 1 100.00%



static int s5p_mfc_runtime_resume(struct device *dev)
{
	struct platform_device *pdev = to_platform_device(dev);
	struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);

	atomic_set(&m_dev->pm.power, 1);
	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
kamil debski kamil debski 46 100.00% 1 100.00%
Total 46 100.00% 1 100.00%

#endif

/* Power management */

static const struct dev_pm_ops s5p_mfc_pm_ops = {
	SET_SYSTEM_SLEEP_PM_OPS(s5p_mfc_suspend, s5p_mfc_resume)
	SET_RUNTIME_PM_OPS(s5p_mfc_runtime_suspend, s5p_mfc_runtime_resume,
			   NULL)
};


static struct s5p_mfc_buf_size_v5 mfc_buf_size_v5 = {
	.h264_ctx	= MFC_H264_CTX_BUF_SIZE,
	.non_h264_ctx	= MFC_CTX_BUF_SIZE,
	.dsc		= DESC_BUF_SIZE,
	.shm		= SHARED_BUF_SIZE,
};


static struct s5p_mfc_buf_size buf_size_v5 = {
	.fw	= MAX_FW_SIZE,
	.cpb	= MAX_CPB_SIZE,
	.priv	= &mfc_buf_size_v5,
};


static struct s5p_mfc_buf_align mfc_buf_align_v5 = {
	.base = MFC_BASE_ALIGN_ORDER,
};


static struct s5p_mfc_variant mfc_drvdata_v5 = {
	.version	= MFC_VERSION,
	.version_bit	= MFC_V5_BIT,
	.port_num	= MFC_NUM_PORTS,
	.buf_size	= &buf_size_v5,
	.buf_align	= &mfc_buf_align_v5,
	.fw_name[0]	= "s5p-mfc.fw",
};


static struct s5p_mfc_buf_size_v6 mfc_buf_size_v6 = {
	.dev_ctx	= MFC_CTX_BUF_SIZE_V6,
	.h264_dec_ctx	= MFC_H264_DEC_CTX_BUF_SIZE_V6,
	.other_dec_ctx	= MFC_OTHER_DEC_CTX_BUF_SIZE_V6,
	.h264_enc_ctx	= MFC_H264_ENC_CTX_BUF_SIZE_V6,
	.other_enc_ctx	= MFC_OTHER_ENC_CTX_BUF_SIZE_V6,
};


static struct s5p_mfc_buf_size buf_size_v6 = {
	.fw	= MAX_FW_SIZE_V6,
	.cpb	= MAX_CPB_SIZE_V6,
	.priv	= &mfc_buf_size_v6,
};


static struct s5p_mfc_buf_align mfc_buf_align_v6 = {
	.base = 0,
};


static struct s5p_mfc_variant mfc_drvdata_v6 = {
	.version	= MFC_VERSION_V6,
	.version_bit	= MFC_V6_BIT,
	.port_num	= MFC_NUM_PORTS_V6,
	.buf_size	= &buf_size_v6,
	.buf_align	= &mfc_buf_align_v6,
	.fw_name[0]     = "s5p-mfc-v6.fw",
	/*
         * v6-v2 firmware contains bug fixes and interface change
         * for init buffer command
         */
	.fw_name[1]     = "s5p-mfc-v6-v2.fw",
};


static struct s5p_mfc_buf_size_v6 mfc_buf_size_v7 = {
	.dev_ctx	= MFC_CTX_BUF_SIZE_V7,
	.h264_dec_ctx	= MFC_H264_DEC_CTX_BUF_SIZE_V7,
	.other_dec_ctx	= MFC_OTHER_DEC_CTX_BUF_SIZE_V7,
	.h264_enc_ctx	= MFC_H264_ENC_CTX_BUF_SIZE_V7,
	.other_enc_ctx	= MFC_OTHER_ENC_CTX_BUF_SIZE_V7,
};


static struct s5p_mfc_buf_size buf_size_v7 = {
	.fw	= MAX_FW_SIZE_V7,
	.cpb	= MAX_CPB_SIZE_V7,
	.priv	= &mfc_buf_size_v7,
};


static struct s5p_mfc_buf_align mfc_buf_align_v7 = {
	.base = 0,
};


static struct s5p_mfc_variant mfc_drvdata_v7 = {
	.version	= MFC_VERSION_V7,
	.version_bit	= MFC_V7_BIT,
	.port_num	= MFC_NUM_PORTS_V7,
	.buf_size	= &buf_size_v7,
	.buf_align	= &mfc_buf_align_v7,
	.fw_name[0]     = "s5p-mfc-v7.fw",
};


static struct s5p_mfc_buf_size_v6 mfc_buf_size_v8 = {
	.dev_ctx	= MFC_CTX_BUF_SIZE_V8,
	.h264_dec_ctx	= MFC_H264_DEC_CTX_BUF_SIZE_V8,
	.other_dec_ctx	= MFC_OTHER_DEC_CTX_BUF_SIZE_V8,
	.h264_enc_ctx	= MFC_H264_ENC_CTX_BUF_SIZE_V8,
	.other_enc_ctx	= MFC_OTHER_ENC_CTX_BUF_SIZE_V8,
};


static struct s5p_mfc_buf_size buf_size_v8 = {
	.fw	= MAX_FW_SIZE_V8,
	.cpb	= MAX_CPB_SIZE_V8,
	.priv	= &mfc_buf_size_v8,
};


static struct s5p_mfc_buf_align mfc_buf_align_v8 = {
	.base = 0,
};


static struct s5p_mfc_variant mfc_drvdata_v8 = {
	.version	= MFC_VERSION_V8,
	.version_bit	= MFC_V8_BIT,
	.port_num	= MFC_NUM_PORTS_V8,
	.buf_size	= &buf_size_v8,
	.buf_align	= &mfc_buf_align_v8,
	.fw_name[0]     = "s5p-mfc-v8.fw",
};


static const struct of_device_id exynos_mfc_match[] = {
	{
		.compatible = "samsung,mfc-v5",
		.data = &mfc_drvdata_v5,
        }, {
		.compatible = "samsung,mfc-v6",
		.data = &mfc_drvdata_v6,
        }, {
		.compatible = "samsung,mfc-v7",
		.data = &mfc_drvdata_v7,
        }, {
		.compatible = "samsung,mfc-v8",
		.data = &mfc_drvdata_v8,
        },
	{},
};
MODULE_DEVICE_TABLE(of, exynos_mfc_match);



static void *mfc_get_drv_data(struct platform_device *pdev)
{
	struct s5p_mfc_variant *driver_data = NULL;
	const struct of_device_id *match;

	match = of_match_node(exynos_mfc_match, pdev->dev.of_node);
	if (match)
		driver_data = (struct s5p_mfc_variant *)match->data;

	return driver_data;
}

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arun kumar k arun kumar k 56 100.00% 1 100.00%
Total 56 100.00% 1 100.00%


static struct platform_driver s5p_mfc_driver = {
	.probe		= s5p_mfc_probe,
	.remove		= s5p_mfc_remove,
	.driver	= {
		.name	= S5P_MFC_NAME,
		.pm	= &s5p_mfc_pm_ops,
		.of_match_table = exynos_mfc_match,
        },
};


module_platform_driver(s5p_mfc_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver");

Overall Contributors
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kamil debski kamil debski 5300 67.78% 12 15.79%
arun kumar k arun kumar k 999 12.78% 11 14.47%
andrzej hajda andrzej hajda 647 8.27% 9 11.84%
jeongtae park jeongtae park 225 2.88% 1 1.32%
kiran avnd kiran avnd 121 1.55% 3 3.95%
hans verkuil hans verkuil 99 1.27% 2 2.63%
pawel osciak pawel osciak 97 1.24% 6 7.89%
prathyush k prathyush k 64 0.82% 2 2.63%
junghak sung junghak sung 53 0.68% 3 3.95%
sachin kamat sachin kamat 41 0.52% 6 7.89%
marek szyprowski marek szyprowski 36 0.46% 2 2.63%
sakari ailus sakari ailus 25 0.32% 2 2.63%
ilja friedel ilja friedel 23 0.29% 1 1.32%
sjoerd simons sjoerd simons 21 0.27% 1 1.32%
mauro carvalho chehab mauro carvalho chehab 16 0.20% 2 2.63%
prabhakar lad prabhakar lad 9 0.12% 1 1.32%
philipp zabel philipp zabel 8 0.10% 1 1.32%
thierry reding thierry reding 8 0.10% 1 1.32%
wei yongjun wei yongjun 6 0.08% 1 1.32%
arun mankuzhi arun mankuzhi 6 0.08% 1 1.32%
joonyoung shim joonyoung shim 4 0.05% 1 1.32%
jonathan mccrohan jonathan mccrohan 3 0.04% 1 1.32%
axel lin axel lin 2 0.03% 1 1.32%
sylwester nawrocki sylwester nawrocki 2 0.03% 1 1.32%
michael opdenacker michael opdenacker 1 0.01% 1 1.32%
zhaowei yuan zhaowei yuan 1 0.01% 1 1.32%
julia lawall julia lawall 1 0.01% 1 1.32%
rafael j. wysocki rafael j. wysocki 1 0.01% 1 1.32%
Total 7819 100.00% 76 100.00%
  Directory: drivers/media/platform/s5p-mfc

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
kamil debski	kamil debski	46	97.87%	1	50.00%
andrzej hajda	andrzej hajda	1	2.13%	1	50.00%
	Total	47	100.00%	2	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/media/platform/s5p-mfc/s5p_mfc.c

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