| /* |
| * 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/version.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); |
| } |
| |
| 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 == 0) |
| 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 == 0) |
| 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_width == 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 == 0) |
| 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] = 0; |
| 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] = 0; |
| 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 = kzalloc(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"); |
| ret = -ENODEV; |
| goto err_dev; |
| } |
| |
| ret = s5p_mfc_init_pm(dev); |
| if (ret < 0) { |
| dev_err(&pdev->dev, "failed to get mfc clock source\n"); |
| goto err_clk; |
| } |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| if (res == NULL) { |
| dev_err(&pdev->dev, "failed to get memory region resource\n"); |
| ret = -ENOENT; |
| goto err_res; |
| } |
| |
| dev->mfc_mem = request_mem_region(res->start, resource_size(res), |
| pdev->name); |
| if (dev->mfc_mem == NULL) { |
| dev_err(&pdev->dev, "failed to get memory region\n"); |
| ret = -ENOENT; |
| goto err_mem_reg; |
| } |
| dev->regs_base = ioremap(dev->mfc_mem->start, resource_size(dev->mfc_mem)); |
| if (dev->regs_base == NULL) { |
| dev_err(&pdev->dev, "failed to ioremap address region\n"); |
| ret = -ENOENT; |
| goto err_ioremap; |
| } |
| |
| 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_get_res; |
| } |
| dev->irq = res->start; |
| ret = request_irq(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_req_irq; |
| } |
| |
| 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_find_child; |
| } |
| 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_find_child; |
| } |
| |
| 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_mem_init_ctx_0; |
| } |
| 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; |
| 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_mem_init_ctx_0: |
| err_find_child: |
| free_irq(dev->irq, dev); |
| err_req_irq: |
| err_get_res: |
| iounmap(dev->regs_base); |
| dev->regs_base = NULL; |
| err_ioremap: |
| release_resource(dev->mfc_mem); |
| kfree(dev->mfc_mem); |
| err_mem_reg: |
| err_res: |
| s5p_mfc_final_pm(dev); |
| err_clk: |
| err_dev: |
| kfree(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]); |
| |
| free_irq(dev->irq, dev); |
| iounmap(dev->regs_base); |
| if (dev->mfc_mem) { |
| release_resource(dev->mfc_mem); |
| kfree(dev->mfc_mem); |
| dev->mfc_mem = NULL; |
| } |
| s5p_mfc_final_pm(dev); |
| kfree(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 |
| }, |
| }; |
| |
| static char banner[] __initdata = |
| "S5P MFC V4L2 Driver, (C) 2011 Samsung Electronics\n"; |
| |
| static int __init s5p_mfc_init(void) |
| { |
| int ret; |
| |
| pr_info("%s", banner); |
| ret = platform_driver_register(&s5p_mfc_driver); |
| if (ret) |
| pr_err("Platform device registration failed.\n"); |
| return ret; |
| } |
| |
| static void __exit s5p_mfc_exit(void) |
| { |
| platform_driver_unregister(&s5p_mfc_driver); |
| } |
| |
| module_init(s5p_mfc_init); |
| module_exit(s5p_mfc_exit); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>"); |
| MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver"); |
| |