| /* |
| * Samsung S5P Multi Format Codec v 5.1 |
| * |
| * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| * Kamil Debski, <k.debski@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #include <linux/clk.h> |
| #include <linux/delay.h> |
| #include <linux/interrupt.h> |
| #include <linux/io.h> |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/videodev2.h> |
| #include <media/v4l2-event.h> |
| #include <linux/workqueue.h> |
| #include <linux/of.h> |
| #include <media/videobuf2-core.h> |
| #include "s5p_mfc_common.h" |
| #include "s5p_mfc_ctrl.h" |
| #include "s5p_mfc_debug.h" |
| #include "s5p_mfc_dec.h" |
| #include "s5p_mfc_enc.h" |
| #include "s5p_mfc_intr.h" |
| #include "s5p_mfc_opr.h" |
| #include "s5p_mfc_cmd.h" |
| #include "s5p_mfc_pm.h" |
| |
| #define S5P_MFC_NAME "s5p-mfc" |
| #define S5P_MFC_DEC_NAME "s5p-mfc-dec" |
| #define S5P_MFC_ENC_NAME "s5p-mfc-enc" |
| |
| int mfc_debug_level; |
| module_param_named(debug, mfc_debug_level, int, S_IRUGO | S_IWUSR); |
| MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages"); |
| |
| /* Helper functions for interrupt processing */ |
| |
| /* Remove from hw execution round robin */ |
| void clear_work_bit(struct s5p_mfc_ctx *ctx) |
| { |
| struct s5p_mfc_dev *dev = ctx->dev; |
| |
| spin_lock(&dev->condlock); |
| __clear_bit(ctx->num, &dev->ctx_work_bits); |
| spin_unlock(&dev->condlock); |
| } |
| |
| /* 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_hw_call_void(dev->mfc_ops, cleanup_queue, |
| &ctx->dst_queue, &ctx->vq_dst); |
| s5p_mfc_hw_call_void(dev->mfc_ops, cleanup_queue, |
| &ctx->src_queue, &ctx->vq_src); |
| clear_work_bit(ctx); |
| wake_up_ctx(ctx, S5P_MFC_R2H_CMD_ERR_RET, 0); |
| } |
| clear_bit(0, &dev->hw_lock); |
| spin_unlock_irqrestore(&dev->irqlock, flags); |
| |
| /* De-init MFC */ |
| s5p_mfc_deinit_hw(dev); |
| |
| /* Double check if there is at least one instance running. |
| * If no instance is in memory than no firmware should be present */ |
| if (dev->num_inst > 0) { |
| ret = s5p_mfc_load_firmware(dev); |
| if (ret) { |
| mfc_err("Failed to reload FW\n"); |
| goto unlock; |
| } |
| s5p_mfc_clock_on(); |
| ret = s5p_mfc_init_hw(dev); |
| if (ret) |
| mfc_err("Failed to reinit FW\n"); |
| } |
| unlock: |
| if (mutex_locked) |
| mutex_unlock(&dev->mfc_mutex); |
| } |
| |
| 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; |
| struct s5p_mfc_dev *dev = ctx->dev; |
| |
| ctx->state = MFCINST_FINISHED; |
| ctx->sequence++; |
| while (!list_empty(&ctx->dst_queue)) { |
| dst_buf = list_entry(ctx->dst_queue.next, |
| struct s5p_mfc_buf, list); |
| mfc_debug(2, "Cleaning up buffer: %d\n", |
| dst_buf->b->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_hw_call(dev->mfc_ops, get_pic_type_top, ctx) == |
| s5p_mfc_hw_call(dev->mfc_ops, get_pic_type_bot, ctx)) |
| dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE; |
| else |
| dst_buf->b->v4l2_buf.field = V4L2_FIELD_INTERLACED; |
| dst_buf->b->v4l2_buf.flags |= V4L2_BUF_FLAG_LAST; |
| |
| 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; |
| unsigned int frame_type; |
| |
| /* Make sure we actually have a new frame before continuing. */ |
| frame_type = s5p_mfc_hw_call(dev->mfc_ops, get_dec_frame_type, dev); |
| if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) |
| return; |
| dec_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dec_y_adr, dev); |
| |
| /* Copy timestamp / timecode from decoded src to dst and set |
| appropriate flags. */ |
| src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list); |
| list_for_each_entry(dst_buf, &ctx->dst_queue, list) { |
| if (vb2_dma_contig_plane_dma_addr(dst_buf->b, 0) == dec_y_addr) { |
| dst_buf->b->v4l2_buf.timecode = |
| src_buf->b->v4l2_buf.timecode; |
| dst_buf->b->v4l2_buf.timestamp = |
| src_buf->b->v4l2_buf.timestamp; |
| dst_buf->b->v4l2_buf.flags &= |
| ~V4L2_BUF_FLAG_TSTAMP_SRC_MASK; |
| dst_buf->b->v4l2_buf.flags |= |
| src_buf->b->v4l2_buf.flags |
| & V4L2_BUF_FLAG_TSTAMP_SRC_MASK; |
| 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; |
| default: |
| /* Don't know how to handle |
| S5P_FIMV_DECODE_FRAME_OTHER_FRAME. */ |
| mfc_debug(2, "Unexpected frame type: %d\n", |
| frame_type); |
| } |
| 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; |
| unsigned int frame_type; |
| |
| dspl_y_addr = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_y_adr, dev); |
| if (IS_MFCV6_PLUS(dev)) |
| frame_type = s5p_mfc_hw_call(dev->mfc_ops, |
| get_disp_frame_type, ctx); |
| else |
| frame_type = s5p_mfc_hw_call(dev->mfc_ops, |
| get_dec_frame_type, dev); |
| |
| /* If frame is same as previous then skip and do not dequeue */ |
| if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) { |
| if (!ctx->after_packed_pb) |
| ctx->sequence++; |
| ctx->after_packed_pb = 0; |
| return; |
| } |
| ctx->sequence++; |
| /* The MFC returns address of the buffer, now we have to |
| * check which videobuf does it correspond to */ |
| list_for_each_entry(dst_buf, &ctx->dst_queue, list) { |
| /* Check if this is the buffer we're looking for */ |
| if (vb2_dma_contig_plane_dma_addr(dst_buf->b, 0) == dspl_y_addr) { |
| list_del(&dst_buf->list); |
| ctx->dst_queue_cnt--; |
| dst_buf->b->v4l2_buf.sequence = ctx->sequence; |
| if (s5p_mfc_hw_call(dev->mfc_ops, |
| get_pic_type_top, ctx) == |
| s5p_mfc_hw_call(dev->mfc_ops, |
| get_pic_type_bot, ctx)) |
| dst_buf->b->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); |
| |
| 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; |
| unsigned int dec_frame_status; |
| struct s5p_mfc_buf *src_buf; |
| unsigned long flags; |
| unsigned int res_change; |
| |
| dst_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev) |
| & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK; |
| dec_frame_status = s5p_mfc_hw_call(dev->mfc_ops, get_dec_status, dev) |
| & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK; |
| res_change = (s5p_mfc_hw_call(dev->mfc_ops, get_dspl_status, dev) |
| & S5P_FIMV_DEC_STATUS_RESOLUTION_MASK) |
| >> S5P_FIMV_DEC_STATUS_RESOLUTION_SHIFT; |
| mfc_debug(2, "Frame Status: %x\n", dst_frame_status); |
| if (ctx->state == MFCINST_RES_CHANGE_INIT) |
| ctx->state = MFCINST_RES_CHANGE_FLUSH; |
| if (res_change == S5P_FIMV_RES_INCREASE || |
| res_change == S5P_FIMV_RES_DECREASE) { |
| ctx->state = MFCINST_RES_CHANGE_INIT; |
| s5p_mfc_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| wake_up_ctx(ctx, reason, err); |
| WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); |
| s5p_mfc_clock_off(); |
| s5p_mfc_hw_call_void(dev->mfc_ops, 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) { |
| static const struct v4l2_event ev_src_ch = { |
| .type = V4L2_EVENT_SOURCE_CHANGE, |
| .u.src_change.changes = |
| V4L2_EVENT_SRC_CH_RESOLUTION, |
| }; |
| |
| s5p_mfc_handle_frame_all_extracted(ctx); |
| ctx->state = MFCINST_RES_CHANGE_END; |
| v4l2_event_queue_fh(&ctx->fh, &ev_src_ch); |
| |
| goto leave_handle_frame; |
| } else { |
| s5p_mfc_handle_frame_all_extracted(ctx); |
| } |
| } |
| |
| if (dec_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) |
| s5p_mfc_handle_frame_copy_time(ctx); |
| |
| /* A frame has been decoded and is in the buffer */ |
| if (dst_frame_status == S5P_FIMV_DEC_STATUS_DISPLAY_ONLY || |
| dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) { |
| s5p_mfc_handle_frame_new(ctx, err); |
| } else { |
| mfc_debug(2, "No frame decode\n"); |
| } |
| /* Mark source buffer as complete */ |
| if (dst_frame_status != S5P_FIMV_DEC_STATUS_DISPLAY_ONLY |
| && !list_empty(&ctx->src_queue)) { |
| src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, |
| list); |
| ctx->consumed_stream += s5p_mfc_hw_call(dev->mfc_ops, |
| get_consumed_stream, dev); |
| if (ctx->codec_mode != S5P_MFC_CODEC_H264_DEC && |
| ctx->codec_mode != S5P_MFC_CODEC_VP8_DEC && |
| ctx->consumed_stream + STUFF_BYTE < |
| src_buf->b->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 { |
| mfc_debug(2, "MFC needs next buffer\n"); |
| ctx->consumed_stream = 0; |
| if (src_buf->flags & MFC_BUF_FLAG_EOS) |
| ctx->state = MFCINST_FINISHING; |
| list_del(&src_buf->list); |
| ctx->src_queue_cnt--; |
| if (s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) > 0) |
| vb2_buffer_done(src_buf->b, VB2_BUF_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->pb_count) |
| clear_work_bit(ctx); |
| s5p_mfc_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| wake_up_ctx(ctx, reason, err); |
| WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); |
| s5p_mfc_clock_off(); |
| /* if suspending, wake up device and do not try_run again*/ |
| if (test_bit(0, &dev->enter_suspend)) |
| wake_up_dev(dev, reason, err); |
| else |
| s5p_mfc_hw_call_void(dev->mfc_ops, try_run, dev); |
| } |
| |
| /* Error handling for interrupt */ |
| static void s5p_mfc_handle_error(struct s5p_mfc_dev *dev, |
| struct s5p_mfc_ctx *ctx, unsigned int reason, unsigned int err) |
| { |
| unsigned long flags; |
| |
| mfc_err("Interrupt Error: %08x\n", err); |
| |
| if (ctx != NULL) { |
| /* Error recovery is dependent on the state of context */ |
| switch (ctx->state) { |
| case MFCINST_RES_CHANGE_INIT: |
| case MFCINST_RES_CHANGE_FLUSH: |
| case MFCINST_RES_CHANGE_END: |
| case MFCINST_FINISHING: |
| case MFCINST_FINISHED: |
| case MFCINST_RUNNING: |
| /* It is highly probable that an error occurred |
| * while decoding a frame */ |
| clear_work_bit(ctx); |
| ctx->state = MFCINST_ERROR; |
| /* Mark all dst buffers as having an error */ |
| spin_lock_irqsave(&dev->irqlock, flags); |
| s5p_mfc_hw_call_void(dev->mfc_ops, cleanup_queue, |
| &ctx->dst_queue, &ctx->vq_dst); |
| /* Mark all src buffers as having an error */ |
| s5p_mfc_hw_call_void(dev->mfc_ops, cleanup_queue, |
| &ctx->src_queue, &ctx->vq_src); |
| spin_unlock_irqrestore(&dev->irqlock, flags); |
| wake_up_ctx(ctx, reason, err); |
| break; |
| default: |
| clear_work_bit(ctx); |
| ctx->state = MFCINST_ERROR; |
| wake_up_ctx(ctx, reason, err); |
| break; |
| } |
| } |
| WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); |
| s5p_mfc_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| s5p_mfc_clock_off(); |
| wake_up_dev(dev, reason, err); |
| 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; |
| |
| if (ctx == NULL) |
| return; |
| dev = ctx->dev; |
| if (ctx->c_ops->post_seq_start) { |
| if (ctx->c_ops->post_seq_start(ctx)) |
| mfc_err("post_seq_start() failed\n"); |
| } else { |
| ctx->img_width = s5p_mfc_hw_call(dev->mfc_ops, get_img_width, |
| dev); |
| ctx->img_height = s5p_mfc_hw_call(dev->mfc_ops, get_img_height, |
| dev); |
| |
| s5p_mfc_hw_call_void(dev->mfc_ops, dec_calc_dpb_size, ctx); |
| |
| ctx->pb_count = s5p_mfc_hw_call(dev->mfc_ops, get_dpb_count, |
| dev); |
| ctx->mv_count = s5p_mfc_hw_call(dev->mfc_ops, get_mv_count, |
| dev); |
| if (ctx->img_width == 0 || ctx->img_height == 0) |
| ctx->state = MFCINST_ERROR; |
| else |
| ctx->state = MFCINST_HEAD_PARSED; |
| |
| if ((ctx->codec_mode == S5P_MFC_CODEC_H264_DEC || |
| ctx->codec_mode == S5P_MFC_CODEC_H264_MVC_DEC) && |
| !list_empty(&ctx->src_queue)) { |
| struct s5p_mfc_buf *src_buf; |
| src_buf = list_entry(ctx->src_queue.next, |
| struct s5p_mfc_buf, list); |
| if (s5p_mfc_hw_call(dev->mfc_ops, get_consumed_stream, |
| dev) < |
| src_buf->b->v4l2_planes[0].bytesused) |
| ctx->head_processed = 0; |
| else |
| ctx->head_processed = 1; |
| } else { |
| ctx->head_processed = 1; |
| } |
| } |
| s5p_mfc_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| clear_work_bit(ctx); |
| WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); |
| s5p_mfc_clock_off(); |
| s5p_mfc_hw_call_void(dev->mfc_ops, 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_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| ctx->int_type = reason; |
| ctx->int_err = err; |
| ctx->int_cond = 1; |
| clear_work_bit(ctx); |
| if (err == 0) { |
| ctx->state = MFCINST_RUNNING; |
| if (!ctx->dpb_flush_flag && ctx->head_processed) { |
| 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; |
| } |
| WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); |
| |
| s5p_mfc_clock_off(); |
| |
| wake_up(&ctx->queue); |
| s5p_mfc_hw_call_void(dev->mfc_ops, try_run, dev); |
| } else { |
| WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); |
| |
| s5p_mfc_clock_off(); |
| |
| wake_up(&ctx->queue); |
| } |
| } |
| |
| 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\n"); |
| |
| 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); |
| |
| WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); |
| |
| s5p_mfc_clock_off(); |
| wake_up(&ctx->queue); |
| s5p_mfc_hw_call_void(dev->mfc_ops, 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_hw_call(dev->mfc_ops, get_int_reason, dev); |
| err = s5p_mfc_hw_call(dev->mfc_ops, get_int_err, dev); |
| mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err); |
| switch (reason) { |
| case S5P_MFC_R2H_CMD_ERR_RET: |
| /* An error has occurred */ |
| if (ctx->state == MFCINST_RUNNING && |
| s5p_mfc_hw_call(dev->mfc_ops, err_dec, err) >= |
| dev->warn_start) |
| s5p_mfc_handle_frame(ctx, reason, err); |
| else |
| s5p_mfc_handle_error(dev, ctx, reason, err); |
| clear_bit(0, &dev->enter_suspend); |
| break; |
| |
| case S5P_MFC_R2H_CMD_SLICE_DONE_RET: |
| case S5P_MFC_R2H_CMD_FIELD_DONE_RET: |
| case S5P_MFC_R2H_CMD_FRAME_DONE_RET: |
| if (ctx->c_ops->post_frame_start) { |
| if (ctx->c_ops->post_frame_start(ctx)) |
| mfc_err("post_frame_start() failed\n"); |
| s5p_mfc_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| wake_up_ctx(ctx, reason, err); |
| WARN_ON(test_and_clear_bit(0, &dev->hw_lock) == 0); |
| s5p_mfc_clock_off(); |
| s5p_mfc_hw_call_void(dev->mfc_ops, try_run, dev); |
| } else { |
| s5p_mfc_handle_frame(ctx, reason, err); |
| } |
| break; |
| |
| case S5P_MFC_R2H_CMD_SEQ_DONE_RET: |
| s5p_mfc_handle_seq_done(ctx, reason, err); |
| break; |
| |
| case S5P_MFC_R2H_CMD_OPEN_INSTANCE_RET: |
| ctx->inst_no = s5p_mfc_hw_call(dev->mfc_ops, get_inst_no, dev); |
| ctx->state = MFCINST_GOT_INST; |
| clear_work_bit(ctx); |
| wake_up(&ctx->queue); |
| goto irq_cleanup_hw; |
| |
| case S5P_MFC_R2H_CMD_CLOSE_INSTANCE_RET: |
| clear_work_bit(ctx); |
| ctx->inst_no = MFC_NO_INSTANCE_SET; |
| ctx->state = MFCINST_FREE; |
| wake_up(&ctx->queue); |
| goto irq_cleanup_hw; |
| |
| case S5P_MFC_R2H_CMD_SYS_INIT_RET: |
| case S5P_MFC_R2H_CMD_FW_STATUS_RET: |
| case S5P_MFC_R2H_CMD_SLEEP_RET: |
| case S5P_MFC_R2H_CMD_WAKEUP_RET: |
| if (ctx) |
| clear_work_bit(ctx); |
| s5p_mfc_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| wake_up_dev(dev, reason, err); |
| clear_bit(0, &dev->hw_lock); |
| clear_bit(0, &dev->enter_suspend); |
| break; |
| |
| case S5P_MFC_R2H_CMD_INIT_BUFFERS_RET: |
| s5p_mfc_handle_init_buffers(ctx, reason, err); |
| break; |
| |
| case S5P_MFC_R2H_CMD_COMPLETE_SEQ_RET: |
| s5p_mfc_handle_stream_complete(ctx, reason, err); |
| break; |
| |
| case S5P_MFC_R2H_CMD_DPB_FLUSH_RET: |
| clear_work_bit(ctx); |
| ctx->state = MFCINST_RUNNING; |
| wake_up(&ctx->queue); |
| goto irq_cleanup_hw; |
| |
| default: |
| mfc_debug(2, "Unknown int reason\n"); |
| s5p_mfc_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| } |
| mfc_debug_leave(); |
| return IRQ_HANDLED; |
| irq_cleanup_hw: |
| s5p_mfc_hw_call_void(dev->mfc_ops, clear_int_flags, dev); |
| ctx->int_type = reason; |
| ctx->int_err = err; |
| ctx->int_cond = 1; |
| if (test_and_clear_bit(0, &dev->hw_lock) == 0) |
| mfc_err("Failed to unlock hw\n"); |
| |
| s5p_mfc_clock_off(); |
| |
| s5p_mfc_hw_call_void(dev->mfc_ops, 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 video_device *vdev = video_devdata(file); |
| struct s5p_mfc_dev *dev = video_drvdata(file); |
| struct s5p_mfc_ctx *ctx = NULL; |
| struct vb2_queue *q; |
| int ret = 0; |
| |
| mfc_debug_enter(); |
| if (mutex_lock_interruptible(&dev->mfc_mutex)) |
| return -ERESTARTSYS; |
| dev->num_inst++; /* It is guarded by mfc_mutex in vfd */ |
| /* Allocate memory for context */ |
| ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
| if (!ctx) { |
| mfc_err("Not enough memory\n"); |
| ret = -ENOMEM; |
| goto err_alloc; |
| } |
| v4l2_fh_init(&ctx->fh, vdev); |
| file->private_data = &ctx->fh; |
| v4l2_fh_add(&ctx->fh); |
| ctx->dev = dev; |
| INIT_LIST_HEAD(&ctx->src_queue); |
| INIT_LIST_HEAD(&ctx->dst_queue); |
| ctx->src_queue_cnt = 0; |
| ctx->dst_queue_cnt = 0; |
| /* Get context number */ |
| ctx->num = 0; |
| while (dev->ctx[ctx->num]) { |
| ctx->num++; |
| if (ctx->num >= MFC_NUM_CONTEXTS) { |
| mfc_err("Too many open contexts\n"); |
| ret = -EBUSY; |
| goto err_no_ctx; |
| } |
| } |
| /* Mark context as idle */ |
| clear_work_bit_irqsave(ctx); |
| dev->ctx[ctx->num] = ctx; |
| if (vdev == dev->vfd_dec) { |
| ctx->type = MFCINST_DECODER; |
| ctx->c_ops = get_dec_codec_ops(); |
| s5p_mfc_dec_init(ctx); |
| /* Setup ctrl handler */ |
| ret = s5p_mfc_dec_ctrls_setup(ctx); |
| if (ret) { |
| mfc_err("Failed to setup mfc controls\n"); |
| goto err_ctrls_setup; |
| } |
| } else if (vdev == dev->vfd_enc) { |
| ctx->type = MFCINST_ENCODER; |
| ctx->c_ops = get_enc_codec_ops(); |
| /* only for encoder */ |
| INIT_LIST_HEAD(&ctx->ref_queue); |
| ctx->ref_queue_cnt = 0; |
| s5p_mfc_enc_init(ctx); |
| /* Setup ctrl handler */ |
| ret = s5p_mfc_enc_ctrls_setup(ctx); |
| if (ret) { |
| mfc_err("Failed to setup mfc controls\n"); |
| goto err_ctrls_setup; |
| } |
| } else { |
| ret = -ENOENT; |
| goto err_bad_node; |
| } |
| ctx->fh.ctrl_handler = &ctx->ctrl_handler; |
| ctx->inst_no = MFC_NO_INSTANCE_SET; |
| /* Load firmware if this is the first instance */ |
| if (dev->num_inst == 1) { |
| dev->watchdog_timer.expires = jiffies + |
| msecs_to_jiffies(MFC_WATCHDOG_INTERVAL); |
| add_timer(&dev->watchdog_timer); |
| ret = s5p_mfc_power_on(); |
| if (ret < 0) { |
| mfc_err("power on failed\n"); |
| goto err_pwr_enable; |
| } |
| s5p_mfc_clock_on(); |
| ret = s5p_mfc_load_firmware(dev); |
| if (ret) { |
| s5p_mfc_clock_off(); |
| goto err_load_fw; |
| } |
| /* Init the FW */ |
| ret = s5p_mfc_init_hw(dev); |
| s5p_mfc_clock_off(); |
| if (ret) |
| goto err_init_hw; |
| } |
| /* Init videobuf2 queue for CAPTURE */ |
| q = &ctx->vq_dst; |
| q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; |
| q->drv_priv = &ctx->fh; |
| q->lock = &dev->mfc_mutex; |
| if (vdev == dev->vfd_dec) { |
| q->io_modes = VB2_MMAP; |
| q->ops = get_dec_queue_ops(); |
| } else if (vdev == dev->vfd_enc) { |
| q->io_modes = VB2_MMAP | VB2_USERPTR; |
| q->ops = get_enc_queue_ops(); |
| } else { |
| ret = -ENOENT; |
| goto err_queue_init; |
| } |
| q->mem_ops = &vb2_dma_contig_memops; |
| q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
| ret = vb2_queue_init(q); |
| if (ret) { |
| mfc_err("Failed to initialize videobuf2 queue(capture)\n"); |
| goto err_queue_init; |
| } |
| /* Init videobuf2 queue for OUTPUT */ |
| q = &ctx->vq_src; |
| q->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; |
| q->io_modes = VB2_MMAP; |
| q->drv_priv = &ctx->fh; |
| q->lock = &dev->mfc_mutex; |
| if (vdev == dev->vfd_dec) { |
| q->io_modes = VB2_MMAP; |
| q->ops = get_dec_queue_ops(); |
| } else if (vdev == dev->vfd_enc) { |
| q->io_modes = VB2_MMAP | VB2_USERPTR; |
| q->ops = get_enc_queue_ops(); |
| } else { |
| ret = -ENOENT; |
| goto err_queue_init; |
| } |
| /* One way to indicate end-of-stream for MFC is to set the |
| * bytesused == 0. However by default videobuf2 handles bytesused |
| * equal to 0 as a special case and changes its value to the size |
| * of the buffer. Set the allow_zero_bytesused flag so that videobuf2 |
| * will keep the value of bytesused intact. |
| */ |
| q->allow_zero_bytesused = 1; |
| q->mem_ops = &vb2_dma_contig_memops; |
| q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; |
| ret = vb2_queue_init(q); |
| if (ret) { |
| mfc_err("Failed to initialize videobuf2 queue(output)\n"); |
| goto err_queue_init; |
| } |
| init_waitqueue_head(&ctx->queue); |
| mutex_unlock(&dev->mfc_mutex); |
| mfc_debug_leave(); |
| return ret; |
| /* Deinit when failure occurred */ |
| err_queue_init: |
| if (dev->num_inst == 1) |
| s5p_mfc_deinit_hw(dev); |
| err_init_hw: |
| err_load_fw: |
| err_pwr_enable: |
| if (dev->num_inst == 1) { |
| if (s5p_mfc_power_off() < 0) |
| mfc_err("power off failed\n"); |
| del_timer_sync(&dev->watchdog_timer); |
| } |
| err_ctrls_setup: |
| s5p_mfc_dec_ctrls_delete(ctx); |
| err_bad_node: |
| dev->ctx[ctx->num] = NULL; |
| err_no_ctx: |
| v4l2_fh_del(&ctx->fh); |
| v4l2_fh_exit(&ctx->fh); |
| kfree(ctx); |
| err_alloc: |
| dev->num_inst--; |
| mutex_unlock(&dev->mfc_mutex); |
| mfc_debug_leave(); |
| return ret; |
| } |
| |
| /* Release MFC context */ |
| static int s5p_mfc_release(struct file *file) |
| { |
| struct s5p_mfc_ctx *ctx = fh_to_ctx(file->private_data); |
| struct s5p_mfc_dev *dev = ctx->dev; |
| |
| mfc_debug_enter(); |
| mutex_lock(&dev->mfc_mutex); |
| s5p_mfc_clock_on(); |
| vb2_queue_release(&ctx->vq_src); |
| vb2_queue_release(&ctx->vq_dst); |
| /* Mark context as idle */ |
| clear_work_bit_irqsave(ctx); |
| /* If instance was initialised and not yet freed, |
| * return instance and free resources */ |
| if (ctx->state != MFCINST_FREE && ctx->state != MFCINST_INIT) { |
| mfc_debug(2, "Has to free instance\n"); |
| s5p_mfc_close_mfc_inst(dev, ctx); |
| } |
| /* hardware locking scheme */ |
| if (dev->curr_ctx == ctx->num) |
| clear_bit(0, &dev->hw_lock); |
| dev->num_inst--; |
| if (dev->num_inst == 0) { |
| mfc_debug(2, "Last instance\n"); |
| s5p_mfc_deinit_hw(dev); |
| del_timer_sync(&dev->watchdog_timer); |
| if (s5p_mfc_power_off() < 0) |
| mfc_err("Power off failed\n"); |
| } |
| mfc_debug(2, "Shutting down clock\n"); |
| s5p_mfc_clock_off(); |
| dev->ctx[ctx->num] = NULL; |
| s5p_mfc_dec_ctrls_delete(ctx); |
| v4l2_fh_del(&ctx->fh); |
| v4l2_fh_exit(&ctx->fh); |
| kfree(ctx); |
| mfc_debug_leave(); |
| mutex_unlock(&dev->mfc_mutex); |
| return 0; |
| } |
| |
| /* 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); |
| } |
| |
| static void *mfc_get_drv_data(struct platform_device *pdev); |
| |
| static int s5p_mfc_alloc_memdevs(struct s5p_mfc_dev *dev) |
| { |
| unsigned int mem_info[2] = { }; |
| |
| dev->mem_dev_l = devm_kzalloc(&dev->plat_dev->dev, |
| sizeof(struct device), GFP_KERNEL); |
| if (!dev->mem_dev_l) { |
| mfc_err("Not enough memory\n"); |
| return -ENOMEM; |
| } |
| device_initialize(dev->mem_dev_l); |
| of_property_read_u32_array(dev->plat_dev->dev.of_node, |
| "samsung,mfc-l", mem_info, 2); |
| if (dma_declare_coherent_memory(dev->mem_dev_l, mem_info[0], |
| mem_info[0], mem_info[1], |
| DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0) { |
| mfc_err("Failed to declare coherent memory for\n" |
| "MFC device\n"); |
| return -ENOMEM; |
| } |
| |
| dev->mem_dev_r = devm_kzalloc(&dev->plat_dev->dev, |
| sizeof(struct device), GFP_KERNEL); |
| if (!dev->mem_dev_r) { |
| mfc_err("Not enough memory\n"); |
| return -ENOMEM; |
| } |
| device_initialize(dev->mem_dev_r); |
| of_property_read_u32_array(dev->plat_dev->dev.of_node, |
| "samsung,mfc-r", mem_info, 2); |
| if (dma_declare_coherent_memory(dev->mem_dev_r, mem_info[0], |
| mem_info[0], mem_info[1], |
| DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE) == 0) { |
| pr_err("Failed to declare coherent memory for\n" |
| "MFC device\n"); |
| return -ENOMEM; |
| } |
| return 0; |
| } |
| |
| /* MFC probe function */ |
| static int s5p_mfc_probe(struct platform_device *pdev) |
| { |
| struct s5p_mfc_dev *dev; |
| struct video_device *vfd; |
| struct resource *res; |
| int ret; |
| |
| pr_debug("%s++\n", __func__); |
| dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); |
| if (!dev) { |
| dev_err(&pdev->dev, "Not enough memory for MFC device\n"); |
| return -ENOMEM; |
| } |
| |
| spin_lock_init(&dev->irqlock); |
| spin_lock_init(&dev->condlock); |
| dev->plat_dev = pdev; |
| if (!dev->plat_dev) { |
| dev_err(&pdev->dev, "No platform data specified\n"); |
| return -ENODEV; |
| } |
| |
| dev->variant = mfc_get_drv_data(pdev); |
| |
| ret = s5p_mfc_init_pm(dev); |
| if (ret < 0) { |
| dev_err(&pdev->dev, "failed to get mfc clock source\n"); |
| return ret; |
| } |
| |
| res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| |
| dev->regs_base = devm_ioremap_resource(&pdev->dev, res); |
| if (IS_ERR(dev->regs_base)) |
| return PTR_ERR(dev->regs_base); |
| |
| res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| if (res == NULL) { |
| dev_err(&pdev->dev, "failed to get irq resource\n"); |
| ret = -ENOENT; |
| goto err_res; |
| } |
| dev->irq = res->start; |
| ret = devm_request_irq(&pdev->dev, dev->irq, s5p_mfc_irq, |
| 0, pdev->name, dev); |
| if (ret) { |
| dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret); |
| goto err_res; |
| } |
| |
| if (pdev->dev.of_node) { |
| ret = s5p_mfc_alloc_memdevs(dev); |
| if (ret < 0) |
| goto err_res; |
| } else { |
| dev->mem_dev_l = device_find_child(&dev->plat_dev->dev, |
| "s5p-mfc-l", match_child); |
| if (!dev->mem_dev_l) { |
| mfc_err("Mem child (L) device get failed\n"); |
| ret = -ENODEV; |
| goto err_res; |
| } |
| dev->mem_dev_r = device_find_child(&dev->plat_dev->dev, |
| "s5p-mfc-r", match_child); |
| if (!dev->mem_dev_r) { |
| mfc_err("Mem child (R) device get failed\n"); |
| ret = -ENODEV; |
| goto err_res; |
| } |
| } |
| |
| dev->alloc_ctx[0] = vb2_dma_contig_init_ctx(dev->mem_dev_l); |
| if (IS_ERR(dev->alloc_ctx[0])) { |
| ret = PTR_ERR(dev->alloc_ctx[0]); |
| goto err_res; |
| } |
| dev->alloc_ctx[1] = vb2_dma_contig_init_ctx(dev->mem_dev_r); |
| if (IS_ERR(dev->alloc_ctx[1])) { |
| ret = PTR_ERR(dev->alloc_ctx[1]); |
| goto err_mem_init_ctx_1; |
| } |
| |
| mutex_init(&dev->mfc_mutex); |
| |
| ret = s5p_mfc_alloc_firmware(dev); |
| if (ret) |
| goto err_alloc_fw; |
| |
| ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); |
| if (ret) |
| goto err_v4l2_dev_reg; |
| init_waitqueue_head(&dev->queue); |
| |
| /* decoder */ |
| vfd = video_device_alloc(); |
| if (!vfd) { |
| v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); |
| ret = -ENOMEM; |
| goto err_dec_alloc; |
| } |
| vfd->fops = &s5p_mfc_fops; |
| vfd->ioctl_ops = get_dec_v4l2_ioctl_ops(); |
| vfd->release = video_device_release; |
| vfd->lock = &dev->mfc_mutex; |
| vfd->v4l2_dev = &dev->v4l2_dev; |
| vfd->vfl_dir = VFL_DIR_M2M; |
| snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_DEC_NAME); |
| dev->vfd_dec = vfd; |
| ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); |
| if (ret) { |
| v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); |
| video_device_release(vfd); |
| goto err_dec_reg; |
| } |
| v4l2_info(&dev->v4l2_dev, |
| "decoder registered as /dev/video%d\n", vfd->num); |
| video_set_drvdata(vfd, dev); |
| |
| /* encoder */ |
| vfd = video_device_alloc(); |
| if (!vfd) { |
| v4l2_err(&dev->v4l2_dev, "Failed to allocate video device\n"); |
| ret = -ENOMEM; |
| goto err_enc_alloc; |
| } |
| vfd->fops = &s5p_mfc_fops; |
| vfd->ioctl_ops = get_enc_v4l2_ioctl_ops(); |
| vfd->release = video_device_release; |
| vfd->lock = &dev->mfc_mutex; |
| vfd->v4l2_dev = &dev->v4l2_dev; |
| vfd->vfl_dir = VFL_DIR_M2M; |
| snprintf(vfd->name, sizeof(vfd->name), "%s", S5P_MFC_ENC_NAME); |
| dev->vfd_enc = vfd; |
| ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0); |
| if (ret) { |
| v4l2_err(&dev->v4l2_dev, "Failed to register video device\n"); |
| video_device_release(vfd); |
| goto err_enc_reg; |
| } |
| v4l2_info(&dev->v4l2_dev, |
| "encoder registered as /dev/video%d\n", vfd->num); |
| video_set_drvdata(vfd, dev); |
| platform_set_drvdata(pdev, dev); |
| |
| dev->hw_lock = 0; |
| dev->watchdog_workqueue = create_singlethread_workqueue(S5P_MFC_NAME); |
| INIT_WORK(&dev->watchdog_work, s5p_mfc_watchdog_worker); |
| atomic_set(&dev->watchdog_cnt, 0); |
| init_timer(&dev->watchdog_timer); |
| dev->watchdog_timer.data = (unsigned long)dev; |
| dev->watchdog_timer.function = s5p_mfc_watchdog; |
| |
| /* Initialize HW ops and commands based on MFC version */ |
| s5p_mfc_init_hw_ops(dev); |
| s5p_mfc_init_hw_cmds(dev); |
| s5p_mfc_init_regs(dev); |
| |
| pr_debug("%s--\n", __func__); |
| return 0; |
| |
| /* Deinit MFC if probe had failed */ |
| err_enc_reg: |
| video_device_release(dev->vfd_enc); |
| err_enc_alloc: |
| video_unregister_device(dev->vfd_dec); |
| err_dec_reg: |
| video_device_release(dev->vfd_dec); |
| err_dec_alloc: |
| v4l2_device_unregister(&dev->v4l2_dev); |
| err_v4l2_dev_reg: |
| s5p_mfc_release_firmware(dev); |
| err_alloc_fw: |
| vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]); |
| err_mem_init_ctx_1: |
| vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]); |
| err_res: |
| s5p_mfc_final_pm(dev); |
| |
| pr_debug("%s-- with error\n", __func__); |
| return ret; |
| |
| } |
| |
| /* Remove the driver */ |
| static int s5p_mfc_remove(struct platform_device *pdev) |
| { |
| struct s5p_mfc_dev *dev = platform_get_drvdata(pdev); |
| |
| v4l2_info(&dev->v4l2_dev, "Removing %s\n", pdev->name); |
| |
| del_timer_sync(&dev->watchdog_timer); |
| flush_workqueue(dev->watchdog_workqueue); |
| destroy_workqueue(dev->watchdog_workqueue); |
| |
| video_unregister_device(dev->vfd_enc); |
| video_unregister_device(dev->vfd_dec); |
| v4l2_device_unregister(&dev->v4l2_dev); |
| s5p_mfc_release_firmware(dev); |
| vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]); |
| vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]); |
| if (pdev->dev.of_node) { |
| put_device(dev->mem_dev_l); |
| put_device(dev->mem_dev_r); |
| } |
| |
| s5p_mfc_final_pm(dev); |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM_SLEEP |
| |
| static int s5p_mfc_suspend(struct device *dev) |
| { |
| struct platform_device *pdev = to_platform_device(dev); |
| struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev); |
| int ret; |
| |
| if (m_dev->num_inst == 0) |
| return 0; |
| |
| if (test_and_set_bit(0, &m_dev->enter_suspend) != 0) { |
| mfc_err("Error: going to suspend for a second time\n"); |
| return -EIO; |
| } |
| |
| /* Check if we're processing then wait if it necessary. */ |
| while (test_and_set_bit(0, &m_dev->hw_lock) != 0) { |
| /* Try and lock the HW */ |
| /* Wait on the interrupt waitqueue */ |
| ret = wait_event_interruptible_timeout(m_dev->queue, |
| m_dev->int_cond, msecs_to_jiffies(MFC_INT_TIMEOUT)); |
| if (ret == 0) { |
| mfc_err("Waiting for hardware to finish timed out\n"); |
| clear_bit(0, &m_dev->enter_suspend); |
| return -EIO; |
| } |
| } |
| |
| ret = s5p_mfc_sleep(m_dev); |
| if (ret) { |
| clear_bit(0, &m_dev->enter_suspend); |
| clear_bit(0, &m_dev->hw_lock); |
| } |
| return ret; |
| } |
| |
| 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 |
| 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); |
| |
| 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 s5p_mfc_buf_size_v5 mfc_buf_size_v5 = { |
| .h264_ctx = MFC_H264_CTX_BUF_SIZE, |
| .non_h264_ctx = MFC_CTX_BUF_SIZE, |
| .dsc = DESC_BUF_SIZE, |
| .shm = SHARED_BUF_SIZE, |
| }; |
| |
| static struct s5p_mfc_buf_size buf_size_v5 = { |
| .fw = MAX_FW_SIZE, |
| .cpb = MAX_CPB_SIZE, |
| .priv = &mfc_buf_size_v5, |
| }; |
| |
| static struct s5p_mfc_buf_align mfc_buf_align_v5 = { |
| .base = MFC_BASE_ALIGN_ORDER, |
| }; |
| |
| static struct s5p_mfc_variant mfc_drvdata_v5 = { |
| .version = MFC_VERSION, |
| .version_bit = MFC_V5_BIT, |
| .port_num = MFC_NUM_PORTS, |
| .buf_size = &buf_size_v5, |
| .buf_align = &mfc_buf_align_v5, |
| .fw_name[0] = "s5p-mfc.fw", |
| }; |
| |
| static struct s5p_mfc_buf_size_v6 mfc_buf_size_v6 = { |
| .dev_ctx = MFC_CTX_BUF_SIZE_V6, |
| .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V6, |
| .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V6, |
| .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V6, |
| .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V6, |
| }; |
| |
| static struct s5p_mfc_buf_size buf_size_v6 = { |
| .fw = MAX_FW_SIZE_V6, |
| .cpb = MAX_CPB_SIZE_V6, |
| .priv = &mfc_buf_size_v6, |
| }; |
| |
| static struct s5p_mfc_buf_align mfc_buf_align_v6 = { |
| .base = 0, |
| }; |
| |
| static struct s5p_mfc_variant mfc_drvdata_v6 = { |
| .version = MFC_VERSION_V6, |
| .version_bit = MFC_V6_BIT, |
| .port_num = MFC_NUM_PORTS_V6, |
| .buf_size = &buf_size_v6, |
| .buf_align = &mfc_buf_align_v6, |
| .fw_name[0] = "s5p-mfc-v6.fw", |
| /* |
| * v6-v2 firmware contains bug fixes and interface change |
| * for init buffer command |
| */ |
| .fw_name[1] = "s5p-mfc-v6-v2.fw", |
| }; |
| |
| static struct s5p_mfc_buf_size_v6 mfc_buf_size_v7 = { |
| .dev_ctx = MFC_CTX_BUF_SIZE_V7, |
| .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V7, |
| .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V7, |
| .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V7, |
| .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V7, |
| }; |
| |
| static struct s5p_mfc_buf_size buf_size_v7 = { |
| .fw = MAX_FW_SIZE_V7, |
| .cpb = MAX_CPB_SIZE_V7, |
| .priv = &mfc_buf_size_v7, |
| }; |
| |
| static struct s5p_mfc_buf_align mfc_buf_align_v7 = { |
| .base = 0, |
| }; |
| |
| static struct s5p_mfc_variant mfc_drvdata_v7 = { |
| .version = MFC_VERSION_V7, |
| .version_bit = MFC_V7_BIT, |
| .port_num = MFC_NUM_PORTS_V7, |
| .buf_size = &buf_size_v7, |
| .buf_align = &mfc_buf_align_v7, |
| .fw_name[0] = "s5p-mfc-v7.fw", |
| }; |
| |
| static struct s5p_mfc_buf_size_v6 mfc_buf_size_v8 = { |
| .dev_ctx = MFC_CTX_BUF_SIZE_V8, |
| .h264_dec_ctx = MFC_H264_DEC_CTX_BUF_SIZE_V8, |
| .other_dec_ctx = MFC_OTHER_DEC_CTX_BUF_SIZE_V8, |
| .h264_enc_ctx = MFC_H264_ENC_CTX_BUF_SIZE_V8, |
| .other_enc_ctx = MFC_OTHER_ENC_CTX_BUF_SIZE_V8, |
| }; |
| |
| static struct s5p_mfc_buf_size buf_size_v8 = { |
| .fw = MAX_FW_SIZE_V8, |
| .cpb = MAX_CPB_SIZE_V8, |
| .priv = &mfc_buf_size_v8, |
| }; |
| |
| static struct s5p_mfc_buf_align mfc_buf_align_v8 = { |
| .base = 0, |
| }; |
| |
| static struct s5p_mfc_variant mfc_drvdata_v8 = { |
| .version = MFC_VERSION_V8, |
| .version_bit = MFC_V8_BIT, |
| .port_num = MFC_NUM_PORTS_V8, |
| .buf_size = &buf_size_v8, |
| .buf_align = &mfc_buf_align_v8, |
| .fw_name[0] = "s5p-mfc-v8.fw", |
| }; |
| |
| static const struct platform_device_id mfc_driver_ids[] = { |
| { |
| .name = "s5p-mfc", |
| .driver_data = (unsigned long)&mfc_drvdata_v5, |
| }, { |
| .name = "s5p-mfc-v5", |
| .driver_data = (unsigned long)&mfc_drvdata_v5, |
| }, { |
| .name = "s5p-mfc-v6", |
| .driver_data = (unsigned long)&mfc_drvdata_v6, |
| }, { |
| .name = "s5p-mfc-v7", |
| .driver_data = (unsigned long)&mfc_drvdata_v7, |
| }, { |
| .name = "s5p-mfc-v8", |
| .driver_data = (unsigned long)&mfc_drvdata_v8, |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(platform, mfc_driver_ids); |
| |
| static const struct of_device_id exynos_mfc_match[] = { |
| { |
| .compatible = "samsung,mfc-v5", |
| .data = &mfc_drvdata_v5, |
| }, { |
| .compatible = "samsung,mfc-v6", |
| .data = &mfc_drvdata_v6, |
| }, { |
| .compatible = "samsung,mfc-v7", |
| .data = &mfc_drvdata_v7, |
| }, { |
| .compatible = "samsung,mfc-v8", |
| .data = &mfc_drvdata_v8, |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, exynos_mfc_match); |
| |
| static void *mfc_get_drv_data(struct platform_device *pdev) |
| { |
| struct s5p_mfc_variant *driver_data = NULL; |
| |
| if (pdev->dev.of_node) { |
| const struct of_device_id *match; |
| match = of_match_node(exynos_mfc_match, |
| pdev->dev.of_node); |
| if (match) |
| driver_data = (struct s5p_mfc_variant *)match->data; |
| } else { |
| driver_data = (struct s5p_mfc_variant *) |
| platform_get_device_id(pdev)->driver_data; |
| } |
| return driver_data; |
| } |
| |
| static struct platform_driver s5p_mfc_driver = { |
| .probe = s5p_mfc_probe, |
| .remove = s5p_mfc_remove, |
| .id_table = mfc_driver_ids, |
| .driver = { |
| .name = S5P_MFC_NAME, |
| .pm = &s5p_mfc_pm_ops, |
| .of_match_table = exynos_mfc_match, |
| }, |
| }; |
| |
| module_platform_driver(s5p_mfc_driver); |
| |
| MODULE_LICENSE("GPL"); |
| MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>"); |
| MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver"); |
| |