diff options
Diffstat (limited to 'drivers/media/platform/s5p-mfc/s5p_mfc.c')
| -rw-r--r-- | drivers/media/platform/s5p-mfc/s5p_mfc.c | 1298 |
1 files changed, 1298 insertions, 0 deletions
diff --git a/drivers/media/platform/s5p-mfc/s5p_mfc.c b/drivers/media/platform/s5p-mfc/s5p_mfc.c new file mode 100644 index 000000000000..5587ef15ca4f --- /dev/null +++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c @@ -0,0 +1,1298 @@ +/* + * 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 <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 */ +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); +} + +/* 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); +} + +/* 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); +} + +/* 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); +} + +/* 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; + clear_work_bit(ctx); + 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); + } +} + +static void s5p_mfc_handle_stream_complete(struct s5p_mfc_ctx *ctx, + unsigned int reason, unsigned int err) +{ + struct s5p_mfc_dev *dev = ctx->dev; + struct s5p_mfc_buf *mb_entry; + + mfc_debug(2, "Stream completed"); + + s5p_mfc_clear_int_flags(dev); + ctx->int_type = reason; + ctx->int_err = err; + ctx->state = MFCINST_FINISHED; + + spin_lock(&dev->irqlock); + 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, 0, 0); + vb2_buffer_done(mb_entry->b, VB2_BUF_STATE_DONE); + } + spin_unlock(&dev->irqlock); + + clear_work_bit(ctx); + + if (test_and_clear_bit(0, &dev->hw_lock) == 0) + WARN_ON(1); + + s5p_mfc_clock_off(); + wake_up(&ctx->queue); + s5p_mfc_try_run(dev); +} + +/* 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; + + case S5P_FIMV_R2H_CMD_ENC_COMPLETE_RET: + s5p_mfc_handle_stream_complete(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; + 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, 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 */ + clear_work_bit_irqsave(ctx); + 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); + mutex_unlock(&dev->mfc_mutex); + 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--; + mutex_unlock(&dev->mfc_mutex); + 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; + + 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 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; + set_work_bit_irqsave(ctx); + 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(); + mutex_unlock(&dev->mfc_mutex); + 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; + + 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; +} + +/* 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; +} + +/* 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; + 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; + 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; + + 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 s5p_mfc_sleep(m_dev); +} + +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"); + |