diff options
Diffstat (limited to 'drivers/media/video/s5p-mfc/s5p_mfc.c')
| -rw-r--r-- | drivers/media/video/s5p-mfc/s5p_mfc.c | 1223 |
1 files changed, 0 insertions, 1223 deletions
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc.c b/drivers/media/video/s5p-mfc/s5p_mfc.c deleted file mode 100644 index 9bb68e7b5ae8..000000000000 --- a/drivers/media/video/s5p-mfc/s5p_mfc.c +++ /dev/null @@ -1,1223 +0,0 @@ -/* - * 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 <linux/workqueue.h> -#include <media/videobuf2-core.h> -#include "regs-mfc.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_pm.h" -#include "s5p_mfc_shm.h" - -#define S5P_MFC_NAME "s5p-mfc" -#define S5P_MFC_DEC_NAME "s5p-mfc-dec" -#define S5P_MFC_ENC_NAME "s5p-mfc-enc" - -int debug; -module_param(debug, 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 */ -static 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); -} - -/* 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); -} - -/* 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); -} - -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); -} - -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_FIMV_R2H_CMD_ERR_RET, 0); - } - clear_bit(0, &dev->hw_lock); - spin_unlock_irqrestore(&dev->irqlock, flags); - /* 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_reload_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); -} - -static enum s5p_mfc_node_type s5p_mfc_get_node_type(struct file *file) -{ - struct video_device *vdev = video_devdata(file); - - if (!vdev) { - mfc_err("failed to get video_device"); - return MFCNODE_INVALID; - } - if (vdev->index == 0) - return MFCNODE_DECODER; - else if (vdev->index == 1) - return MFCNODE_ENCODER; - return MFCNODE_INVALID; -} - -static void s5p_mfc_clear_int_flags(struct s5p_mfc_dev *dev) -{ - mfc_write(dev, 0, S5P_FIMV_RISC_HOST_INT); - mfc_write(dev, 0, S5P_FIMV_RISC2HOST_CMD); - mfc_write(dev, 0xffff, S5P_FIMV_SI_RTN_CHID); -} - -static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx) -{ - struct s5p_mfc_buf *dst_buf; - - 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->v4l2_buf.index); - vb2_set_plane_payload(dst_buf->b, 0, 0); - vb2_set_plane_payload(dst_buf->b, 1, 0); - list_del(&dst_buf->list); - ctx->dst_queue_cnt--; - dst_buf->b->v4l2_buf.sequence = (ctx->sequence++); - - if (s5p_mfc_read_shm(ctx, PIC_TIME_TOP) == - s5p_mfc_read_shm(ctx, PIC_TIME_BOT)) - dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE; - else - dst_buf->b->v4l2_buf.field = V4L2_FIELD_INTERLACED; - - ctx->dec_dst_flag &= ~(1 << dst_buf->b->v4l2_buf.index); - vb2_buffer_done(dst_buf->b, VB2_BUF_STATE_DONE); - } -} - -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 = s5p_mfc_get_dec_y_adr(); - unsigned int frame_type = s5p_mfc_get_frame_type(); - - /* Copy timestamp / timecode from decoded src to dst and set - appropraite 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, 0) == dec_y_addr) { - memcpy(&dst_buf->b->v4l2_buf.timecode, - &src_buf->b->v4l2_buf.timecode, - sizeof(struct v4l2_timecode)); - memcpy(&dst_buf->b->v4l2_buf.timestamp, - &src_buf->b->v4l2_buf.timestamp, - sizeof(struct timeval)); - switch (frame_type) { - case S5P_FIMV_DECODE_FRAME_I_FRAME: - dst_buf->b->v4l2_buf.flags |= - V4L2_BUF_FLAG_KEYFRAME; - break; - case S5P_FIMV_DECODE_FRAME_P_FRAME: - dst_buf->b->v4l2_buf.flags |= - V4L2_BUF_FLAG_PFRAME; - break; - case S5P_FIMV_DECODE_FRAME_B_FRAME: - dst_buf->b->v4l2_buf.flags |= - V4L2_BUF_FLAG_BFRAME; - break; - } - break; - } - } -} - -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 = s5p_mfc_get_dspl_y_adr(); - unsigned int frame_type = s5p_mfc_get_frame_type(); - unsigned int index; - - /* 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, 0) == dspl_y_addr) { - list_del(&dst_buf->list); - ctx->dst_queue_cnt--; - dst_buf->b->v4l2_buf.sequence = ctx->sequence; - if (s5p_mfc_read_shm(ctx, PIC_TIME_TOP) == - s5p_mfc_read_shm(ctx, PIC_TIME_BOT)) - dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE; - else - dst_buf->b->v4l2_buf.field = - V4L2_FIELD_INTERLACED; - vb2_set_plane_payload(dst_buf->b, 0, ctx->luma_size); - vb2_set_plane_payload(dst_buf->b, 1, ctx->chroma_size); - clear_bit(dst_buf->b->v4l2_buf.index, - &ctx->dec_dst_flag); - - vb2_buffer_done(dst_buf->b, - err ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE); - - index = dst_buf->b->v4l2_buf.index; - break; - } - } -} - -/* 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; - struct s5p_mfc_buf *src_buf; - unsigned long flags; - unsigned int res_change; - - unsigned int index; - - dst_frame_status = s5p_mfc_get_dspl_status() - & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK; - res_change = s5p_mfc_get_dspl_status() - & S5P_FIMV_DEC_STATUS_RESOLUTION_MASK; - 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) { - ctx->state = MFCINST_RES_CHANGE_INIT; - s5p_mfc_clear_int_flags(dev); - wake_up_ctx(ctx, reason, err); - if (test_and_clear_bit(0, &dev->hw_lock) == 0) - BUG(); - s5p_mfc_clock_off(); - s5p_mfc_try_run(dev); - return; - } - if (ctx->dpb_flush_flag) - ctx->dpb_flush_flag = 0; - - spin_lock_irqsave(&dev->irqlock, flags); - /* 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) { - s5p_mfc_handle_frame_all_extracted(ctx); - ctx->state = MFCINST_RES_CHANGE_END; - goto leave_handle_frame; - } else { - s5p_mfc_handle_frame_all_extracted(ctx); - } - } - - if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY || - dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_ONLY) - 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_get_consumed_stream(); - if (ctx->codec_mode != S5P_FIMV_CODEC_H264_DEC && - s5p_mfc_get_frame_type() == S5P_FIMV_DECODE_FRAME_P_FRAME - && ctx->consumed_stream + STUFF_BYTE < - src_buf->b->v4l2_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 { - index = src_buf->b->v4l2_buf.index; - mfc_debug(2, "MFC needs next buffer\n"); - ctx->consumed_stream = 0; - list_del(&src_buf->list); - ctx->src_queue_cnt--; - if (s5p_mfc_err_dec(err) > 0) - vb2_buffer_done(src_buf->b, VB2_BUF_STATE_ERROR); - else - vb2_buffer_done(src_buf->b, VB2_BUF_STATE_DONE); - } - } -leave_handle_frame: - spin_unlock_irqrestore(&dev->irqlock, flags); - if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING) - || ctx->dst_queue_cnt < ctx->dpb_count) - clear_work_bit(ctx); - s5p_mfc_clear_int_flags(dev); - wake_up_ctx(ctx, reason, err); - if (test_and_clear_bit(0, &dev->hw_lock) == 0) - BUG(); - s5p_mfc_clock_off(); - s5p_mfc_try_run(dev); -} - -/* Error handling for interrupt */ -static void s5p_mfc_handle_error(struct s5p_mfc_ctx *ctx, - unsigned int reason, unsigned int err) -{ - struct s5p_mfc_dev *dev; - unsigned long flags; - - /* If no context is available then all necessary - * processing has been done. */ - if (ctx == NULL) - return; - - dev = ctx->dev; - mfc_err("Interrupt Error: %08x\n", err); - s5p_mfc_clear_int_flags(dev); - wake_up_dev(dev, reason, err); - - /* Error recovery is dependent on the state of context */ - switch (ctx->state) { - case MFCINST_INIT: - /* This error had to happen while acquireing instance */ - case MFCINST_GOT_INST: - /* This error had to happen while parsing the header */ - case MFCINST_HEAD_PARSED: - /* This error had to happen while setting dst buffers */ - case MFCINST_RETURN_INST: - /* This error had to happen while releasing instance */ - clear_work_bit(ctx); - wake_up_ctx(ctx, reason, err); - if (test_and_clear_bit(0, &dev->hw_lock) == 0) - BUG(); - s5p_mfc_clock_off(); - ctx->state = MFCINST_ERROR; - break; - case MFCINST_FINISHING: - case MFCINST_FINISHED: - case MFCINST_RUNNING: - /* It is higly probable that an error occured - * while decoding a frame */ - clear_work_bit(ctx); - ctx->state = MFCINST_ERROR; - /* Mark all dst buffers as having an error */ - spin_lock_irqsave(&dev->irqlock, flags); - 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); - spin_unlock_irqrestore(&dev->irqlock, flags); - if (test_and_clear_bit(0, &dev->hw_lock) == 0) - BUG(); - s5p_mfc_clock_off(); - break; - default: - mfc_err("Encountered an error interrupt which had not been handled\n"); - break; - } - return; -} - -/* 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; - unsigned int guard_width, guard_height; - - 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_get_img_width(); - ctx->img_height = s5p_mfc_get_img_height(); - - ctx->buf_width = ALIGN(ctx->img_width, - S5P_FIMV_NV12MT_HALIGN); - ctx->buf_height = ALIGN(ctx->img_height, - S5P_FIMV_NV12MT_VALIGN); - mfc_debug(2, "SEQ Done: Movie dimensions %dx%d, " - "buffer dimensions: %dx%d\n", ctx->img_width, - ctx->img_height, ctx->buf_width, - ctx->buf_height); - if (ctx->codec_mode == S5P_FIMV_CODEC_H264_DEC) { - ctx->luma_size = ALIGN(ctx->buf_width * - ctx->buf_height, S5P_FIMV_DEC_BUF_ALIGN); - ctx->chroma_size = ALIGN(ctx->buf_width * - ALIGN((ctx->img_height >> 1), - S5P_FIMV_NV12MT_VALIGN), - S5P_FIMV_DEC_BUF_ALIGN); - ctx->mv_size = ALIGN(ctx->buf_width * - ALIGN((ctx->buf_height >> 2), - S5P_FIMV_NV12MT_VALIGN), - S5P_FIMV_DEC_BUF_ALIGN); - } else { - guard_width = ALIGN(ctx->img_width + 24, - S5P_FIMV_NV12MT_HALIGN); - guard_height = ALIGN(ctx->img_height + 16, - S5P_FIMV_NV12MT_VALIGN); - ctx->luma_size = ALIGN(guard_width * - guard_height, S5P_FIMV_DEC_BUF_ALIGN); - guard_width = ALIGN(ctx->img_width + 16, - S5P_FIMV_NV12MT_HALIGN); - guard_height = ALIGN((ctx->img_height >> 1) + 4, - S5P_FIMV_NV12MT_VALIGN); - ctx->chroma_size = ALIGN(guard_width * - guard_height, S5P_FIMV_DEC_BUF_ALIGN); - ctx->mv_size = 0; - } - ctx->dpb_count = s5p_mfc_get_dpb_count(); - if (ctx->img_width == 0 || ctx->img_height == 0) - ctx->state = MFCINST_ERROR; - else - ctx->state = MFCINST_HEAD_PARSED; - } - s5p_mfc_clear_int_flags(dev); - clear_work_bit(ctx); - if (test_and_clear_bit(0, &dev->hw_lock) == 0) - BUG(); - s5p_mfc_clock_off(); - s5p_mfc_try_run(dev); - wake_up_ctx(ctx, reason, err); -} - -/* 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; - unsigned long flags; - - if (ctx == NULL) - return; - dev = ctx->dev; - s5p_mfc_clear_int_flags(dev); - ctx->int_type = reason; - ctx->int_err = err; - ctx->int_cond = 1; - spin_lock(&dev->condlock); - clear_bit(ctx->num, &dev->ctx_work_bits); - spin_unlock(&dev->condlock); - if (err == 0) { - ctx->state = MFCINST_RUNNING; - if (!ctx->dpb_flush_flag) { - spin_lock_irqsave(&dev->irqlock, flags); - 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_STATE_DONE); - } - spin_unlock_irqrestore(&dev->irqlock, flags); - } else { - ctx->dpb_flush_flag = 0; - } - if (test_and_clear_bit(0, &dev->hw_lock) == 0) - BUG(); - - s5p_mfc_clock_off(); - - wake_up(&ctx->queue); - s5p_mfc_try_run(dev); - } else { - if (test_and_clear_bit(0, &dev->hw_lock) == 0) - BUG(); - - s5p_mfc_clock_off(); - - wake_up(&ctx->queue); - } -} - -/* 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); - ctx = dev->ctx[dev->curr_ctx]; - /* Get the reason of interrupt and the error code */ - reason = s5p_mfc_get_int_reason(); - err = s5p_mfc_get_int_err(); - mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err); - switch (reason) { - case S5P_FIMV_R2H_CMD_ERR_RET: - /* An error has occured */ - if (ctx->state == MFCINST_RUNNING && - s5p_mfc_err_dec(err) >= S5P_FIMV_ERR_WARNINGS_START) - s5p_mfc_handle_frame(ctx, reason, err); - else - s5p_mfc_handle_error(ctx, reason, err); - clear_bit(0, &dev->enter_suspend); - break; - - case S5P_FIMV_R2H_CMD_SLICE_DONE_RET: - case S5P_FIMV_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"); - s5p_mfc_clear_int_flags(dev); - wake_up_ctx(ctx, reason, err); - if (test_and_clear_bit(0, &dev->hw_lock) == 0) - BUG(); - s5p_mfc_clock_off(); - s5p_mfc_try_run(dev); - } else { - s5p_mfc_handle_frame(ctx, reason, err); - } - break; - - case S5P_FIMV_R2H_CMD_SEQ_DONE_RET: - s5p_mfc_handle_seq_done(ctx, reason, err); - break; - - case S5P_FIMV_R2H_CMD_OPEN_INSTANCE_RET: - ctx->inst_no = s5p_mfc_get_inst_no(); - ctx->state = MFCINST_GOT_INST; - clear_work_bit(ctx); - wake_up(&ctx->queue); - goto irq_cleanup_hw; - - case S5P_FIMV_R2H_CMD_CLOSE_INSTANCE_RET: - clear_work_bit(ctx); - ctx->state = MFCINST_FREE; - wake_up(&ctx->queue); - goto irq_cleanup_hw; - - case S5P_FIMV_R2H_CMD_SYS_INIT_RET: - case S5P_FIMV_R2H_CMD_FW_STATUS_RET: - case S5P_FIMV_R2H_CMD_SLEEP_RET: - case S5P_FIMV_R2H_CMD_WAKEUP_RET: - if (ctx) - clear_work_bit(ctx); - s5p_mfc_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_FIMV_R2H_CMD_INIT_BUFFERS_RET: - s5p_mfc_handle_init_buffers(ctx, reason, err); - break; - default: - mfc_debug(2, "Unknown int reason\n"); - s5p_mfc_clear_int_flags(dev); - } - mfc_debug_leave(); - return IRQ_HANDLED; -irq_cleanup_hw: - s5p_mfc_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_try_run(dev); - mfc_debug(2, "Exit via irq_cleanup_hw\n"); - return IRQ_HANDLED; -} - -/* Open an MFC node */ -static int s5p_mfc_open(struct file *file) -{ - struct s5p_mfc_dev *dev = video_drvdata(file); - struct s5p_mfc_ctx *ctx = NULL; - struct vb2_queue *q; - unsigned long flags; - int ret = 0; - - mfc_debug_enter(); - 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, video_devdata(file)); - 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 */ - spin_lock_irqsave(&dev->condlock, flags); - clear_bit(ctx->num, &dev->ctx_work_bits); - spin_unlock_irqrestore(&dev->condlock, flags); - dev->ctx[ctx->num] = ctx; - if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) { - ctx->type = MFCINST_DECODER; - ctx->c_ops = get_dec_codec_ops(); - /* 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 (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) { - 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; - /* 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 = -1; - /* 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_alloc_and_load_firmware(dev); - if (ret) - goto err_alloc_fw; - /* Init the FW */ - ret = s5p_mfc_init_hw(dev); - if (ret) - goto err_init_hw; - s5p_mfc_clock_off(); - } - /* Init videobuf2 queue for CAPTURE */ - q = &ctx->vq_dst; - q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; - q->drv_priv = &ctx->fh; - if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) { - q->io_modes = VB2_MMAP; - q->ops = get_dec_queue_ops(); - } else if (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) { - q->io_modes = VB2_MMAP | VB2_USERPTR; - q->ops = get_enc_queue_ops(); - } else { - ret = -ENOENT; - goto err_queue_init; - } - q->mem_ops = (struct vb2_mem_ops *)&vb2_dma_contig_memops; - 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; - if (s5p_mfc_get_node_type(file) == MFCNODE_DECODER) { - q->io_modes = VB2_MMAP; - q->ops = get_dec_queue_ops(); - } else if (s5p_mfc_get_node_type(file) == MFCNODE_ENCODER) { - q->io_modes = VB2_MMAP | VB2_USERPTR; - q->ops = get_enc_queue_ops(); - } else { - ret = -ENOENT; - goto err_queue_init; - } - q->mem_ops = (struct vb2_mem_ops *)&vb2_dma_contig_memops; - 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); - mfc_debug_leave(); - return ret; - /* Deinit when failure occured */ -err_queue_init: -err_init_hw: - s5p_mfc_release_firmware(dev); -err_alloc_fw: - dev->ctx[ctx->num] = NULL; - del_timer_sync(&dev->watchdog_timer); - s5p_mfc_clock_off(); -err_pwr_enable: - if (dev->num_inst == 1) { - if (s5p_mfc_power_off() < 0) - mfc_err("power off failed\n"); - s5p_mfc_release_firmware(dev); - } -err_ctrls_setup: - s5p_mfc_dec_ctrls_delete(ctx); -err_bad_node: -err_no_ctx: - v4l2_fh_del(&ctx->fh); - v4l2_fh_exit(&ctx->fh); - kfree(ctx); -err_alloc: - dev->num_inst--; - mfc_debug_leave(); - return ret; -} - -/* 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; - unsigned long flags; - - mfc_debug_enter(); - s5p_mfc_clock_on(); - vb2_queue_release(&ctx->vq_src); - vb2_queue_release(&ctx->vq_dst); - /* Mark context as idle */ - spin_lock_irqsave(&dev->condlock, flags); - clear_bit(ctx->num, &dev->ctx_work_bits); - spin_unlock_irqrestore(&dev->condlock, flags); - /* If instance was initialised then - * return instance and free reosurces */ - if (ctx->inst_no != MFC_NO_INSTANCE_SET) { - mfc_debug(2, "Has to free instance\n"); - ctx->state = MFCINST_RETURN_INST; - spin_lock_irqsave(&dev->condlock, flags); - set_bit(ctx->num, &dev->ctx_work_bits); - spin_unlock_irqrestore(&dev->condlock, flags); - s5p_mfc_clean_ctx_int_flags(ctx); - s5p_mfc_try_run(dev); - /* Wait until instance is returned or timeout occured */ - if (s5p_mfc_wait_for_done_ctx - (ctx, S5P_FIMV_R2H_CMD_CLOSE_INSTANCE_RET, 0)) { - s5p_mfc_clock_off(); - mfc_err("Err returning instance\n"); - } - mfc_debug(2, "After free instance\n"); - /* Free resources */ - s5p_mfc_release_codec_buffers(ctx); - s5p_mfc_release_instance_buffer(ctx); - if (ctx->type == MFCINST_DECODER) - s5p_mfc_release_dec_desc_buffer(ctx); - - ctx->inst_no = MFC_NO_INSTANCE_SET; - } - /* 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 - release firmware\n"); - /* reset <-> F/W release */ - s5p_mfc_reset(dev); - s5p_mfc_release_firmware(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(); - return 0; -} - -/* 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; - - 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, &src_q->done_wq, wait); - poll_wait(file, &dst_q->done_wq, wait); - mutex_lock(&dev->mfc_mutex); - 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: - return rc; -} - -/* 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); - unsigned long offset = vma->vm_pgoff << PAGE_SHIFT; - int ret; - 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); - } - return ret; -} - -/* 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); -} - -/* 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; - } - - 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_request_and_ioremap(&pdev->dev, res); - if (dev->regs_base == NULL) { - dev_err(&pdev->dev, "Failed to obtain io memory\n"); - return -ENOENT; - } - - 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, - IRQF_DISABLED, pdev->name, dev); - if (ret) { - dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret); - goto err_res; - } - - 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_OR_NULL(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_OR_NULL(dev->alloc_ctx[1])) { - ret = PTR_ERR(dev->alloc_ctx[1]); - goto err_mem_init_ctx_1; - } - - mutex_init(&dev->mfc_mutex); - - 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; - /* Locking in file operations other than ioctl should be done - by the driver, not the V4L2 core. - This driver needs auditing so that this flag can be removed. */ - set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); - vfd->v4l2_dev = &dev->v4l2_dev; - 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; - /* This should not be necessary */ - set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); - vfd->v4l2_dev = &dev->v4l2_dev; - 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; - - 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: - 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; - -} - -/* Remove the driver */ -static int __devexit 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); - vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]); - vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]); - - s5p_mfc_final_pm(dev); - return 0; -} - -#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; - return s5p_mfc_sleep(m_dev); - 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 || m_dev->ctx[m_dev->curr_ctx]->int_cond, - msecs_to_jiffies(MFC_INT_TIMEOUT)); - - if (ret == 0) { - mfc_err("Waiting for hardware to finish timed out\n"); - return -EIO; - } - } - return 0; -} - -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); -} -#endif - -#ifdef CONFIG_PM_RUNTIME -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; -} - -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); - int pre_power; - - if (!m_dev->alloc_ctx) - return 0; - pre_power = atomic_read(&m_dev->pm.power); - atomic_set(&m_dev->pm.power, 1); - return 0; -} -#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 platform_driver s5p_mfc_driver = { - .probe = s5p_mfc_probe, - .remove = __devexit_p(s5p_mfc_remove), - .driver = { - .name = S5P_MFC_NAME, - .owner = THIS_MODULE, - .pm = &s5p_mfc_pm_ops - }, -}; - -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"); - |