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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-08-14 17:31:16 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-08-15 16:43:09 -0300
commit2c3fb08b3f74b8792004095a1f6881a3296ff643 (patch)
tree19be9d09c4aa66d4363ee9d38a43721f5d6b144f /drivers/media/platform/s5p-mfc/s5p_mfc.c
parent2a2d1cf46500ab7599d0b45ee837f3936763ccac (diff)
[media] rename drivers/media/video as .../platform
The remaining drivers are mostly platform drivers. Name the dir to reflect it. It makes sense to latter break it into a few other dirs. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/platform/s5p-mfc/s5p_mfc.c')
-rw-r--r--drivers/media/platform/s5p-mfc/s5p_mfc.c1230
1 files changed, 1230 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..e3e616d8a09d
--- /dev/null
+++ b/drivers/media/platform/s5p-mfc/s5p_mfc.c
@@ -0,0 +1,1230 @@
+/*
+ * Samsung S5P Multi Format Codec v 5.1
+ *
+ * Copyright (c) 2011 Samsung Electronics Co., Ltd.
+ * Kamil Debski, <k.debski@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/videodev2.h>
+#include <linux/workqueue.h>
+#include <media/videobuf2-core.h>
+#include "regs-mfc.h"
+#include "s5p_mfc_ctrl.h"
+#include "s5p_mfc_debug.h"
+#include "s5p_mfc_dec.h"
+#include "s5p_mfc_enc.h"
+#include "s5p_mfc_intr.h"
+#include "s5p_mfc_opr.h"
+#include "s5p_mfc_pm.h"
+#include "s5p_mfc_shm.h"
+
+#define S5P_MFC_NAME "s5p-mfc"
+#define S5P_MFC_DEC_NAME "s5p-mfc-dec"
+#define S5P_MFC_ENC_NAME "s5p-mfc-enc"
+
+int debug;
+module_param(debug, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(debug, "Debug level - higher value produces more verbose messages");
+
+/* Helper functions for interrupt processing */
+/* Remove from hw execution round robin */
+static void clear_work_bit(struct s5p_mfc_ctx *ctx)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+
+ spin_lock(&dev->condlock);
+ clear_bit(ctx->num, &dev->ctx_work_bits);
+ spin_unlock(&dev->condlock);
+}
+
+/* Wake up context wait_queue */
+static void wake_up_ctx(struct s5p_mfc_ctx *ctx, unsigned int reason,
+ unsigned int err)
+{
+ ctx->int_cond = 1;
+ ctx->int_type = reason;
+ ctx->int_err = err;
+ wake_up(&ctx->queue);
+}
+
+/* Wake up device wait_queue */
+static void wake_up_dev(struct s5p_mfc_dev *dev, unsigned int reason,
+ unsigned int err)
+{
+ dev->int_cond = 1;
+ dev->int_type = reason;
+ dev->int_err = err;
+ wake_up(&dev->queue);
+}
+
+static void s5p_mfc_watchdog(unsigned long arg)
+{
+ struct s5p_mfc_dev *dev = (struct s5p_mfc_dev *)arg;
+
+ if (test_bit(0, &dev->hw_lock))
+ atomic_inc(&dev->watchdog_cnt);
+ if (atomic_read(&dev->watchdog_cnt) >= MFC_WATCHDOG_CNT) {
+ /* This means that hw is busy and no interrupts were
+ * generated by hw for the Nth time of running this
+ * watchdog timer. This usually means a serious hw
+ * error. Now it is time to kill all instances and
+ * reset the MFC. */
+ mfc_err("Time out during waiting for HW\n");
+ queue_work(dev->watchdog_workqueue, &dev->watchdog_work);
+ }
+ dev->watchdog_timer.expires = jiffies +
+ msecs_to_jiffies(MFC_WATCHDOG_INTERVAL);
+ add_timer(&dev->watchdog_timer);
+}
+
+static void s5p_mfc_watchdog_worker(struct work_struct *work)
+{
+ struct s5p_mfc_dev *dev;
+ struct s5p_mfc_ctx *ctx;
+ unsigned long flags;
+ int mutex_locked;
+ int i, ret;
+
+ dev = container_of(work, struct s5p_mfc_dev, watchdog_work);
+
+ mfc_err("Driver timeout error handling\n");
+ /* Lock the mutex that protects open and release.
+ * This is necessary as they may load and unload firmware. */
+ mutex_locked = mutex_trylock(&dev->mfc_mutex);
+ if (!mutex_locked)
+ mfc_err("Error: some instance may be closing/opening\n");
+ spin_lock_irqsave(&dev->irqlock, flags);
+
+ s5p_mfc_clock_off();
+
+ for (i = 0; i < MFC_NUM_CONTEXTS; i++) {
+ ctx = dev->ctx[i];
+ if (!ctx)
+ continue;
+ ctx->state = MFCINST_ERROR;
+ s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
+ s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
+ clear_work_bit(ctx);
+ wake_up_ctx(ctx, S5P_FIMV_R2H_CMD_ERR_RET, 0);
+ }
+ clear_bit(0, &dev->hw_lock);
+ spin_unlock_irqrestore(&dev->irqlock, flags);
+ /* Double check if there is at least one instance running.
+ * If no instance is in memory than no firmware should be present */
+ if (dev->num_inst > 0) {
+ ret = s5p_mfc_reload_firmware(dev);
+ if (ret) {
+ mfc_err("Failed to reload FW\n");
+ goto unlock;
+ }
+ s5p_mfc_clock_on();
+ ret = s5p_mfc_init_hw(dev);
+ if (ret)
+ mfc_err("Failed to reinit FW\n");
+ }
+unlock:
+ if (mutex_locked)
+ mutex_unlock(&dev->mfc_mutex);
+}
+
+static enum s5p_mfc_node_type s5p_mfc_get_node_type(struct file *file)
+{
+ struct video_device *vdev = video_devdata(file);
+
+ if (!vdev) {
+ mfc_err("failed to get video_device");
+ return MFCNODE_INVALID;
+ }
+ if (vdev->index == 0)
+ return MFCNODE_DECODER;
+ else if (vdev->index == 1)
+ return MFCNODE_ENCODER;
+ return MFCNODE_INVALID;
+}
+
+static void s5p_mfc_clear_int_flags(struct s5p_mfc_dev *dev)
+{
+ mfc_write(dev, 0, S5P_FIMV_RISC_HOST_INT);
+ mfc_write(dev, 0, S5P_FIMV_RISC2HOST_CMD);
+ mfc_write(dev, 0xffff, S5P_FIMV_SI_RTN_CHID);
+}
+
+static void s5p_mfc_handle_frame_all_extracted(struct s5p_mfc_ctx *ctx)
+{
+ struct s5p_mfc_buf *dst_buf;
+
+ ctx->state = MFCINST_FINISHED;
+ ctx->sequence++;
+ while (!list_empty(&ctx->dst_queue)) {
+ dst_buf = list_entry(ctx->dst_queue.next,
+ struct s5p_mfc_buf, list);
+ mfc_debug(2, "Cleaning up buffer: %d\n",
+ dst_buf->b->v4l2_buf.index);
+ vb2_set_plane_payload(dst_buf->b, 0, 0);
+ vb2_set_plane_payload(dst_buf->b, 1, 0);
+ list_del(&dst_buf->list);
+ ctx->dst_queue_cnt--;
+ dst_buf->b->v4l2_buf.sequence = (ctx->sequence++);
+
+ if (s5p_mfc_read_shm(ctx, PIC_TIME_TOP) ==
+ s5p_mfc_read_shm(ctx, PIC_TIME_BOT))
+ dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE;
+ else
+ dst_buf->b->v4l2_buf.field = V4L2_FIELD_INTERLACED;
+
+ ctx->dec_dst_flag &= ~(1 << dst_buf->b->v4l2_buf.index);
+ vb2_buffer_done(dst_buf->b, VB2_BUF_STATE_DONE);
+ }
+}
+
+static void s5p_mfc_handle_frame_copy_time(struct s5p_mfc_ctx *ctx)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+ struct s5p_mfc_buf *dst_buf, *src_buf;
+ size_t dec_y_addr = s5p_mfc_get_dec_y_adr();
+ unsigned int frame_type = s5p_mfc_get_frame_type();
+
+ /* Copy timestamp / timecode from decoded src to dst and set
+ appropraite flags */
+ src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf, list);
+ list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
+ if (vb2_dma_contig_plane_dma_addr(dst_buf->b, 0) == dec_y_addr) {
+ memcpy(&dst_buf->b->v4l2_buf.timecode,
+ &src_buf->b->v4l2_buf.timecode,
+ sizeof(struct v4l2_timecode));
+ memcpy(&dst_buf->b->v4l2_buf.timestamp,
+ &src_buf->b->v4l2_buf.timestamp,
+ sizeof(struct timeval));
+ switch (frame_type) {
+ case S5P_FIMV_DECODE_FRAME_I_FRAME:
+ dst_buf->b->v4l2_buf.flags |=
+ V4L2_BUF_FLAG_KEYFRAME;
+ break;
+ case S5P_FIMV_DECODE_FRAME_P_FRAME:
+ dst_buf->b->v4l2_buf.flags |=
+ V4L2_BUF_FLAG_PFRAME;
+ break;
+ case S5P_FIMV_DECODE_FRAME_B_FRAME:
+ dst_buf->b->v4l2_buf.flags |=
+ V4L2_BUF_FLAG_BFRAME;
+ break;
+ }
+ break;
+ }
+ }
+}
+
+static void s5p_mfc_handle_frame_new(struct s5p_mfc_ctx *ctx, unsigned int err)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+ struct s5p_mfc_buf *dst_buf;
+ size_t dspl_y_addr = s5p_mfc_get_dspl_y_adr();
+ unsigned int frame_type = s5p_mfc_get_frame_type();
+ unsigned int index;
+
+ /* If frame is same as previous then skip and do not dequeue */
+ if (frame_type == S5P_FIMV_DECODE_FRAME_SKIPPED) {
+ if (!ctx->after_packed_pb)
+ ctx->sequence++;
+ ctx->after_packed_pb = 0;
+ return;
+ }
+ ctx->sequence++;
+ /* The MFC returns address of the buffer, now we have to
+ * check which videobuf does it correspond to */
+ list_for_each_entry(dst_buf, &ctx->dst_queue, list) {
+ /* Check if this is the buffer we're looking for */
+ if (vb2_dma_contig_plane_dma_addr(dst_buf->b, 0) == dspl_y_addr) {
+ list_del(&dst_buf->list);
+ ctx->dst_queue_cnt--;
+ dst_buf->b->v4l2_buf.sequence = ctx->sequence;
+ if (s5p_mfc_read_shm(ctx, PIC_TIME_TOP) ==
+ s5p_mfc_read_shm(ctx, PIC_TIME_BOT))
+ dst_buf->b->v4l2_buf.field = V4L2_FIELD_NONE;
+ else
+ dst_buf->b->v4l2_buf.field =
+ V4L2_FIELD_INTERLACED;
+ vb2_set_plane_payload(dst_buf->b, 0, ctx->luma_size);
+ vb2_set_plane_payload(dst_buf->b, 1, ctx->chroma_size);
+ clear_bit(dst_buf->b->v4l2_buf.index,
+ &ctx->dec_dst_flag);
+
+ vb2_buffer_done(dst_buf->b,
+ err ? VB2_BUF_STATE_ERROR : VB2_BUF_STATE_DONE);
+
+ index = dst_buf->b->v4l2_buf.index;
+ break;
+ }
+ }
+}
+
+/* Handle frame decoding interrupt */
+static void s5p_mfc_handle_frame(struct s5p_mfc_ctx *ctx,
+ unsigned int reason, unsigned int err)
+{
+ struct s5p_mfc_dev *dev = ctx->dev;
+ unsigned int dst_frame_status;
+ struct s5p_mfc_buf *src_buf;
+ unsigned long flags;
+ unsigned int res_change;
+
+ unsigned int index;
+
+ dst_frame_status = s5p_mfc_get_dspl_status()
+ & S5P_FIMV_DEC_STATUS_DECODING_STATUS_MASK;
+ res_change = s5p_mfc_get_dspl_status()
+ & S5P_FIMV_DEC_STATUS_RESOLUTION_MASK;
+ mfc_debug(2, "Frame Status: %x\n", dst_frame_status);
+ if (ctx->state == MFCINST_RES_CHANGE_INIT)
+ ctx->state = MFCINST_RES_CHANGE_FLUSH;
+ if (res_change) {
+ ctx->state = MFCINST_RES_CHANGE_INIT;
+ s5p_mfc_clear_int_flags(dev);
+ wake_up_ctx(ctx, reason, err);
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ BUG();
+ s5p_mfc_clock_off();
+ s5p_mfc_try_run(dev);
+ return;
+ }
+ if (ctx->dpb_flush_flag)
+ ctx->dpb_flush_flag = 0;
+
+ spin_lock_irqsave(&dev->irqlock, flags);
+ /* All frames remaining in the buffer have been extracted */
+ if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_EMPTY) {
+ if (ctx->state == MFCINST_RES_CHANGE_FLUSH) {
+ s5p_mfc_handle_frame_all_extracted(ctx);
+ ctx->state = MFCINST_RES_CHANGE_END;
+ goto leave_handle_frame;
+ } else {
+ s5p_mfc_handle_frame_all_extracted(ctx);
+ }
+ }
+
+ if (dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY ||
+ dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_ONLY)
+ s5p_mfc_handle_frame_copy_time(ctx);
+
+ /* A frame has been decoded and is in the buffer */
+ if (dst_frame_status == S5P_FIMV_DEC_STATUS_DISPLAY_ONLY ||
+ dst_frame_status == S5P_FIMV_DEC_STATUS_DECODING_DISPLAY) {
+ s5p_mfc_handle_frame_new(ctx, err);
+ } else {
+ mfc_debug(2, "No frame decode\n");
+ }
+ /* Mark source buffer as complete */
+ if (dst_frame_status != S5P_FIMV_DEC_STATUS_DISPLAY_ONLY
+ && !list_empty(&ctx->src_queue)) {
+ src_buf = list_entry(ctx->src_queue.next, struct s5p_mfc_buf,
+ list);
+ ctx->consumed_stream += s5p_mfc_get_consumed_stream();
+ if (ctx->codec_mode != S5P_FIMV_CODEC_H264_DEC &&
+ s5p_mfc_get_frame_type() == S5P_FIMV_DECODE_FRAME_P_FRAME
+ && ctx->consumed_stream + STUFF_BYTE <
+ src_buf->b->v4l2_planes[0].bytesused) {
+ /* Run MFC again on the same buffer */
+ mfc_debug(2, "Running again the same buffer\n");
+ ctx->after_packed_pb = 1;
+ } else {
+ index = src_buf->b->v4l2_buf.index;
+ mfc_debug(2, "MFC needs next buffer\n");
+ ctx->consumed_stream = 0;
+ list_del(&src_buf->list);
+ ctx->src_queue_cnt--;
+ if (s5p_mfc_err_dec(err) > 0)
+ vb2_buffer_done(src_buf->b, VB2_BUF_STATE_ERROR);
+ else
+ vb2_buffer_done(src_buf->b, VB2_BUF_STATE_DONE);
+ }
+ }
+leave_handle_frame:
+ spin_unlock_irqrestore(&dev->irqlock, flags);
+ if ((ctx->src_queue_cnt == 0 && ctx->state != MFCINST_FINISHING)
+ || ctx->dst_queue_cnt < ctx->dpb_count)
+ clear_work_bit(ctx);
+ s5p_mfc_clear_int_flags(dev);
+ wake_up_ctx(ctx, reason, err);
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ BUG();
+ s5p_mfc_clock_off();
+ s5p_mfc_try_run(dev);
+}
+
+/* Error handling for interrupt */
+static void s5p_mfc_handle_error(struct s5p_mfc_ctx *ctx,
+ unsigned int reason, unsigned int err)
+{
+ struct s5p_mfc_dev *dev;
+ unsigned long flags;
+
+ /* If no context is available then all necessary
+ * processing has been done. */
+ if (ctx == NULL)
+ return;
+
+ dev = ctx->dev;
+ mfc_err("Interrupt Error: %08x\n", err);
+ s5p_mfc_clear_int_flags(dev);
+ wake_up_dev(dev, reason, err);
+
+ /* Error recovery is dependent on the state of context */
+ switch (ctx->state) {
+ case MFCINST_INIT:
+ /* This error had to happen while acquireing instance */
+ case MFCINST_GOT_INST:
+ /* This error had to happen while parsing the header */
+ case MFCINST_HEAD_PARSED:
+ /* This error had to happen while setting dst buffers */
+ case MFCINST_RETURN_INST:
+ /* This error had to happen while releasing instance */
+ clear_work_bit(ctx);
+ wake_up_ctx(ctx, reason, err);
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ BUG();
+ s5p_mfc_clock_off();
+ ctx->state = MFCINST_ERROR;
+ break;
+ case MFCINST_FINISHING:
+ case MFCINST_FINISHED:
+ case MFCINST_RUNNING:
+ /* It is higly probable that an error occured
+ * while decoding a frame */
+ clear_work_bit(ctx);
+ ctx->state = MFCINST_ERROR;
+ /* Mark all dst buffers as having an error */
+ spin_lock_irqsave(&dev->irqlock, flags);
+ s5p_mfc_cleanup_queue(&ctx->dst_queue, &ctx->vq_dst);
+ /* Mark all src buffers as having an error */
+ s5p_mfc_cleanup_queue(&ctx->src_queue, &ctx->vq_src);
+ spin_unlock_irqrestore(&dev->irqlock, flags);
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ BUG();
+ s5p_mfc_clock_off();
+ break;
+ default:
+ mfc_err("Encountered an error interrupt which had not been handled\n");
+ break;
+ }
+ return;
+}
+
+/* Header parsing interrupt handling */
+static void s5p_mfc_handle_seq_done(struct s5p_mfc_ctx *ctx,
+ unsigned int reason, unsigned int err)
+{
+ struct s5p_mfc_dev *dev;
+ unsigned int guard_width, guard_height;
+
+ if (ctx == NULL)
+ return;
+ dev = ctx->dev;
+ if (ctx->c_ops->post_seq_start) {
+ if (ctx->c_ops->post_seq_start(ctx))
+ mfc_err("post_seq_start() failed\n");
+ } else {
+ ctx->img_width = s5p_mfc_get_img_width();
+ ctx->img_height = s5p_mfc_get_img_height();
+
+ ctx->buf_width = ALIGN(ctx->img_width,
+ S5P_FIMV_NV12MT_HALIGN);
+ ctx->buf_height = ALIGN(ctx->img_height,
+ S5P_FIMV_NV12MT_VALIGN);
+ mfc_debug(2, "SEQ Done: Movie dimensions %dx%d, "
+ "buffer dimensions: %dx%d\n", ctx->img_width,
+ ctx->img_height, ctx->buf_width,
+ ctx->buf_height);
+ if (ctx->codec_mode == S5P_FIMV_CODEC_H264_DEC) {
+ ctx->luma_size = ALIGN(ctx->buf_width *
+ ctx->buf_height, S5P_FIMV_DEC_BUF_ALIGN);
+ ctx->chroma_size = ALIGN(ctx->buf_width *
+ ALIGN((ctx->img_height >> 1),
+ S5P_FIMV_NV12MT_VALIGN),
+ S5P_FIMV_DEC_BUF_ALIGN);
+ ctx->mv_size = ALIGN(ctx->buf_width *
+ ALIGN((ctx->buf_height >> 2),
+ S5P_FIMV_NV12MT_VALIGN),
+ S5P_FIMV_DEC_BUF_ALIGN);
+ } else {
+ guard_width = ALIGN(ctx->img_width + 24,
+ S5P_FIMV_NV12MT_HALIGN);
+ guard_height = ALIGN(ctx->img_height + 16,
+ S5P_FIMV_NV12MT_VALIGN);
+ ctx->luma_size = ALIGN(guard_width *
+ guard_height, S5P_FIMV_DEC_BUF_ALIGN);
+ guard_width = ALIGN(ctx->img_width + 16,
+ S5P_FIMV_NV12MT_HALIGN);
+ guard_height = ALIGN((ctx->img_height >> 1) + 4,
+ S5P_FIMV_NV12MT_VALIGN);
+ ctx->chroma_size = ALIGN(guard_width *
+ guard_height, S5P_FIMV_DEC_BUF_ALIGN);
+ ctx->mv_size = 0;
+ }
+ ctx->dpb_count = s5p_mfc_get_dpb_count();
+ if (ctx->img_width == 0 || ctx->img_height == 0)
+ ctx->state = MFCINST_ERROR;
+ else
+ ctx->state = MFCINST_HEAD_PARSED;
+ }
+ s5p_mfc_clear_int_flags(dev);
+ clear_work_bit(ctx);
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ BUG();
+ s5p_mfc_clock_off();
+ s5p_mfc_try_run(dev);
+ wake_up_ctx(ctx, reason, err);
+}
+
+/* Header parsing interrupt handling */
+static void s5p_mfc_handle_init_buffers(struct s5p_mfc_ctx *ctx,
+ unsigned int reason, unsigned int err)
+{
+ struct s5p_mfc_buf *src_buf;
+ struct s5p_mfc_dev *dev;
+ unsigned long flags;
+
+ if (ctx == NULL)
+ return;
+ dev = ctx->dev;
+ s5p_mfc_clear_int_flags(dev);
+ ctx->int_type = reason;
+ ctx->int_err = err;
+ ctx->int_cond = 1;
+ spin_lock(&dev->condlock);
+ clear_bit(ctx->num, &dev->ctx_work_bits);
+ spin_unlock(&dev->condlock);
+ if (err == 0) {
+ ctx->state = MFCINST_RUNNING;
+ if (!ctx->dpb_flush_flag) {
+ spin_lock_irqsave(&dev->irqlock, flags);
+ if (!list_empty(&ctx->src_queue)) {
+ src_buf = list_entry(ctx->src_queue.next,
+ struct s5p_mfc_buf, list);
+ list_del(&src_buf->list);
+ ctx->src_queue_cnt--;
+ vb2_buffer_done(src_buf->b,
+ VB2_BUF_STATE_DONE);
+ }
+ spin_unlock_irqrestore(&dev->irqlock, flags);
+ } else {
+ ctx->dpb_flush_flag = 0;
+ }
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ BUG();
+
+ s5p_mfc_clock_off();
+
+ wake_up(&ctx->queue);
+ s5p_mfc_try_run(dev);
+ } else {
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ BUG();
+
+ s5p_mfc_clock_off();
+
+ wake_up(&ctx->queue);
+ }
+}
+
+/* Interrupt processing */
+static irqreturn_t s5p_mfc_irq(int irq, void *priv)
+{
+ struct s5p_mfc_dev *dev = priv;
+ struct s5p_mfc_ctx *ctx;
+ unsigned int reason;
+ unsigned int err;
+
+ mfc_debug_enter();
+ /* Reset the timeout watchdog */
+ atomic_set(&dev->watchdog_cnt, 0);
+ ctx = dev->ctx[dev->curr_ctx];
+ /* Get the reason of interrupt and the error code */
+ reason = s5p_mfc_get_int_reason();
+ err = s5p_mfc_get_int_err();
+ mfc_debug(1, "Int reason: %d (err: %08x)\n", reason, err);
+ switch (reason) {
+ case S5P_FIMV_R2H_CMD_ERR_RET:
+ /* An error has occured */
+ if (ctx->state == MFCINST_RUNNING &&
+ s5p_mfc_err_dec(err) >= S5P_FIMV_ERR_WARNINGS_START)
+ s5p_mfc_handle_frame(ctx, reason, err);
+ else
+ s5p_mfc_handle_error(ctx, reason, err);
+ clear_bit(0, &dev->enter_suspend);
+ break;
+
+ case S5P_FIMV_R2H_CMD_SLICE_DONE_RET:
+ case S5P_FIMV_R2H_CMD_FRAME_DONE_RET:
+ if (ctx->c_ops->post_frame_start) {
+ if (ctx->c_ops->post_frame_start(ctx))
+ mfc_err("post_frame_start() failed\n");
+ s5p_mfc_clear_int_flags(dev);
+ wake_up_ctx(ctx, reason, err);
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ BUG();
+ s5p_mfc_clock_off();
+ s5p_mfc_try_run(dev);
+ } else {
+ s5p_mfc_handle_frame(ctx, reason, err);
+ }
+ break;
+
+ case S5P_FIMV_R2H_CMD_SEQ_DONE_RET:
+ s5p_mfc_handle_seq_done(ctx, reason, err);
+ break;
+
+ case S5P_FIMV_R2H_CMD_OPEN_INSTANCE_RET:
+ ctx->inst_no = s5p_mfc_get_inst_no();
+ ctx->state = MFCINST_GOT_INST;
+ clear_work_bit(ctx);
+ wake_up(&ctx->queue);
+ goto irq_cleanup_hw;
+
+ case S5P_FIMV_R2H_CMD_CLOSE_INSTANCE_RET:
+ clear_work_bit(ctx);
+ ctx->state = MFCINST_FREE;
+ wake_up(&ctx->queue);
+ goto irq_cleanup_hw;
+
+ case S5P_FIMV_R2H_CMD_SYS_INIT_RET:
+ case S5P_FIMV_R2H_CMD_FW_STATUS_RET:
+ case S5P_FIMV_R2H_CMD_SLEEP_RET:
+ case S5P_FIMV_R2H_CMD_WAKEUP_RET:
+ if (ctx)
+ clear_work_bit(ctx);
+ s5p_mfc_clear_int_flags(dev);
+ wake_up_dev(dev, reason, err);
+ clear_bit(0, &dev->hw_lock);
+ clear_bit(0, &dev->enter_suspend);
+ break;
+
+ case S5P_FIMV_R2H_CMD_INIT_BUFFERS_RET:
+ s5p_mfc_handle_init_buffers(ctx, reason, err);
+ break;
+ default:
+ mfc_debug(2, "Unknown int reason\n");
+ s5p_mfc_clear_int_flags(dev);
+ }
+ mfc_debug_leave();
+ return IRQ_HANDLED;
+irq_cleanup_hw:
+ s5p_mfc_clear_int_flags(dev);
+ ctx->int_type = reason;
+ ctx->int_err = err;
+ ctx->int_cond = 1;
+ if (test_and_clear_bit(0, &dev->hw_lock) == 0)
+ mfc_err("Failed to unlock hw\n");
+
+ s5p_mfc_clock_off();
+
+ s5p_mfc_try_run(dev);
+ mfc_debug(2, "Exit via irq_cleanup_hw\n");
+ return IRQ_HANDLED;
+}
+
+/* Open an MFC node */
+static int s5p_mfc_open(struct file *file)
+{
+ struct s5p_mfc_dev *dev = video_drvdata(file);
+ struct s5p_mfc_ctx *ctx = NULL;
+ struct vb2_queue *q;
+ unsigned long flags;
+ int ret = 0;
+
+ mfc_debug_enter();
+ 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 */
+ 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);
+ 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;
+ unsigned long flags;
+
+ 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 */
+ spin_lock_irqsave(&dev->condlock, flags);
+ clear_bit(ctx->num, &dev->ctx_work_bits);
+ spin_unlock_irqrestore(&dev->condlock, flags);
+ /* If instance was initialised then
+ * return instance and free reosurces */
+ if (ctx->inst_no != MFC_NO_INSTANCE_SET) {
+ mfc_debug(2, "Has to free instance\n");
+ ctx->state = MFCINST_RETURN_INST;
+ spin_lock_irqsave(&dev->condlock, flags);
+ set_bit(ctx->num, &dev->ctx_work_bits);
+ spin_unlock_irqrestore(&dev->condlock, flags);
+ s5p_mfc_clean_ctx_int_flags(ctx);
+ s5p_mfc_try_run(dev);
+ /* Wait until instance is returned or timeout occured */
+ if (s5p_mfc_wait_for_done_ctx
+ (ctx, S5P_FIMV_R2H_CMD_CLOSE_INSTANCE_RET, 0)) {
+ s5p_mfc_clock_off();
+ mfc_err("Err returning instance\n");
+ }
+ mfc_debug(2, "After free instance\n");
+ /* Free resources */
+ s5p_mfc_release_codec_buffers(ctx);
+ s5p_mfc_release_instance_buffer(ctx);
+ if (ctx->type == MFCINST_DECODER)
+ s5p_mfc_release_dec_desc_buffer(ctx);
+
+ ctx->inst_no = MFC_NO_INSTANCE_SET;
+ }
+ /* hardware locking scheme */
+ if (dev->curr_ctx == ctx->num)
+ clear_bit(0, &dev->hw_lock);
+ dev->num_inst--;
+ if (dev->num_inst == 0) {
+ mfc_debug(2, "Last instance - release firmware\n");
+ /* reset <-> F/W release */
+ s5p_mfc_reset(dev);
+ s5p_mfc_release_firmware(dev);
+ del_timer_sync(&dev->watchdog_timer);
+ if (s5p_mfc_power_off() < 0)
+ mfc_err("Power off failed\n");
+ }
+ mfc_debug(2, "Shutting down clock\n");
+ s5p_mfc_clock_off();
+ dev->ctx[ctx->num] = NULL;
+ s5p_mfc_dec_ctrls_delete(ctx);
+ v4l2_fh_del(&ctx->fh);
+ v4l2_fh_exit(&ctx->fh);
+ kfree(ctx);
+ mfc_debug_leave();
+ 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, &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:
+ 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;
+ 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;
+ return s5p_mfc_sleep(m_dev);
+ if (test_and_set_bit(0, &m_dev->enter_suspend) != 0) {
+ mfc_err("Error: going to suspend for a second time\n");
+ return -EIO;
+ }
+
+ /* Check if we're processing then wait if it necessary. */
+ while (test_and_set_bit(0, &m_dev->hw_lock) != 0) {
+ /* Try and lock the HW */
+ /* Wait on the interrupt waitqueue */
+ ret = wait_event_interruptible_timeout(m_dev->queue,
+ m_dev->int_cond || m_dev->ctx[m_dev->curr_ctx]->int_cond,
+ msecs_to_jiffies(MFC_INT_TIMEOUT));
+
+ if (ret == 0) {
+ mfc_err("Waiting for hardware to finish timed out\n");
+ return -EIO;
+ }
+ }
+ return 0;
+}
+
+static int s5p_mfc_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
+
+ if (m_dev->num_inst == 0)
+ return 0;
+ return s5p_mfc_wakeup(m_dev);
+}
+#endif
+
+#ifdef CONFIG_PM_RUNTIME
+static int s5p_mfc_runtime_suspend(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
+
+ atomic_set(&m_dev->pm.power, 0);
+ return 0;
+}
+
+static int s5p_mfc_runtime_resume(struct device *dev)
+{
+ struct platform_device *pdev = to_platform_device(dev);
+ struct s5p_mfc_dev *m_dev = platform_get_drvdata(pdev);
+ int pre_power;
+
+ if (!m_dev->alloc_ctx)
+ return 0;
+ pre_power = atomic_read(&m_dev->pm.power);
+ atomic_set(&m_dev->pm.power, 1);
+ return 0;
+}
+#endif
+
+/* Power management */
+static const struct dev_pm_ops s5p_mfc_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(s5p_mfc_suspend, s5p_mfc_resume)
+ SET_RUNTIME_PM_OPS(s5p_mfc_runtime_suspend, s5p_mfc_runtime_resume,
+ NULL)
+};
+
+static struct platform_driver s5p_mfc_driver = {
+ .probe = s5p_mfc_probe,
+ .remove = __devexit_p(s5p_mfc_remove),
+ .driver = {
+ .name = S5P_MFC_NAME,
+ .owner = THIS_MODULE,
+ .pm = &s5p_mfc_pm_ops
+ },
+};
+
+module_platform_driver(s5p_mfc_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Kamil Debski <k.debski@samsung.com>");
+MODULE_DESCRIPTION("Samsung S5P Multi Format Codec V4L2 driver");
+

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