diff options
Diffstat (limited to 'drivers/media/platform/verisilicon/hantro_drv.c')
| -rw-r--r-- | drivers/media/platform/verisilicon/hantro_drv.c | 1146 |
1 files changed, 1146 insertions, 0 deletions
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c new file mode 100644 index 000000000000..2036f72eeb4a --- /dev/null +++ b/drivers/media/platform/verisilicon/hantro_drv.c @@ -0,0 +1,1146 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Hantro VPU codec driver + * + * Copyright (C) 2018 Collabora, Ltd. + * Copyright 2018 Google LLC. + * Tomasz Figa <tfiga@chromium.org> + * + * Based on s5p-mfc driver by Samsung Electronics Co., Ltd. + * Copyright (C) 2011 Samsung Electronics Co., Ltd. + */ + +#include <linux/clk.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/platform_device.h> +#include <linux/pm.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> +#include <linux/videodev2.h> +#include <linux/workqueue.h> +#include <media/v4l2-event.h> +#include <media/v4l2-mem2mem.h> +#include <media/videobuf2-core.h> +#include <media/videobuf2-vmalloc.h> + +#include "hantro_v4l2.h" +#include "hantro.h" +#include "hantro_hw.h" + +#define DRIVER_NAME "hantro-vpu" + +int hantro_debug; +module_param_named(debug, hantro_debug, int, 0644); +MODULE_PARM_DESC(debug, + "Debug level - higher value produces more verbose messages"); + +void *hantro_get_ctrl(struct hantro_ctx *ctx, u32 id) +{ + struct v4l2_ctrl *ctrl; + + ctrl = v4l2_ctrl_find(&ctx->ctrl_handler, id); + return ctrl ? ctrl->p_cur.p : NULL; +} + +dma_addr_t hantro_get_ref(struct hantro_ctx *ctx, u64 ts) +{ + struct vb2_queue *q = v4l2_m2m_get_dst_vq(ctx->fh.m2m_ctx); + struct vb2_buffer *buf; + + buf = vb2_find_buffer(q, ts); + if (!buf) + return 0; + return hantro_get_dec_buf_addr(ctx, buf); +} + +static const struct v4l2_event hantro_eos_event = { + .type = V4L2_EVENT_EOS +}; + +static void hantro_job_finish_no_pm(struct hantro_dev *vpu, + struct hantro_ctx *ctx, + enum vb2_buffer_state result) +{ + struct vb2_v4l2_buffer *src, *dst; + + src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx); + dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx); + + if (WARN_ON(!src)) + return; + if (WARN_ON(!dst)) + return; + + src->sequence = ctx->sequence_out++; + dst->sequence = ctx->sequence_cap++; + + if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, src)) { + dst->flags |= V4L2_BUF_FLAG_LAST; + v4l2_event_queue_fh(&ctx->fh, &hantro_eos_event); + v4l2_m2m_mark_stopped(ctx->fh.m2m_ctx); + } + + v4l2_m2m_buf_done_and_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx, + result); +} + +static void hantro_job_finish(struct hantro_dev *vpu, + struct hantro_ctx *ctx, + enum vb2_buffer_state result) +{ + pm_runtime_mark_last_busy(vpu->dev); + pm_runtime_put_autosuspend(vpu->dev); + + clk_bulk_disable(vpu->variant->num_clocks, vpu->clocks); + + hantro_job_finish_no_pm(vpu, ctx, result); +} + +void hantro_irq_done(struct hantro_dev *vpu, + enum vb2_buffer_state result) +{ + struct hantro_ctx *ctx = + v4l2_m2m_get_curr_priv(vpu->m2m_dev); + + /* + * If cancel_delayed_work returns false + * the timeout expired. The watchdog is running, + * and will take care of finishing the job. + */ + if (cancel_delayed_work(&vpu->watchdog_work)) { + if (result == VB2_BUF_STATE_DONE && ctx->codec_ops->done) + ctx->codec_ops->done(ctx); + hantro_job_finish(vpu, ctx, result); + } +} + +void hantro_watchdog(struct work_struct *work) +{ + struct hantro_dev *vpu; + struct hantro_ctx *ctx; + + vpu = container_of(to_delayed_work(work), + struct hantro_dev, watchdog_work); + ctx = v4l2_m2m_get_curr_priv(vpu->m2m_dev); + if (ctx) { + vpu_err("frame processing timed out!\n"); + ctx->codec_ops->reset(ctx); + hantro_job_finish(vpu, ctx, VB2_BUF_STATE_ERROR); + } +} + +void hantro_start_prepare_run(struct hantro_ctx *ctx) +{ + struct vb2_v4l2_buffer *src_buf; + + src_buf = hantro_get_src_buf(ctx); + v4l2_ctrl_request_setup(src_buf->vb2_buf.req_obj.req, + &ctx->ctrl_handler); + + if (!ctx->is_encoder && !ctx->dev->variant->late_postproc) { + if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) + hantro_postproc_enable(ctx); + else + hantro_postproc_disable(ctx); + } +} + +void hantro_end_prepare_run(struct hantro_ctx *ctx) +{ + struct vb2_v4l2_buffer *src_buf; + + if (!ctx->is_encoder && ctx->dev->variant->late_postproc) { + if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) + hantro_postproc_enable(ctx); + else + hantro_postproc_disable(ctx); + } + + src_buf = hantro_get_src_buf(ctx); + v4l2_ctrl_request_complete(src_buf->vb2_buf.req_obj.req, + &ctx->ctrl_handler); + + /* Kick the watchdog. */ + schedule_delayed_work(&ctx->dev->watchdog_work, + msecs_to_jiffies(2000)); +} + +static void device_run(void *priv) +{ + struct hantro_ctx *ctx = priv; + struct vb2_v4l2_buffer *src, *dst; + int ret; + + src = hantro_get_src_buf(ctx); + dst = hantro_get_dst_buf(ctx); + + ret = pm_runtime_resume_and_get(ctx->dev->dev); + if (ret < 0) + goto err_cancel_job; + + ret = clk_bulk_enable(ctx->dev->variant->num_clocks, ctx->dev->clocks); + if (ret) + goto err_cancel_job; + + v4l2_m2m_buf_copy_metadata(src, dst, true); + + if (ctx->codec_ops->run(ctx)) + goto err_cancel_job; + + return; + +err_cancel_job: + hantro_job_finish_no_pm(ctx->dev, ctx, VB2_BUF_STATE_ERROR); +} + +static const struct v4l2_m2m_ops vpu_m2m_ops = { + .device_run = device_run, +}; + +static int +queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq) +{ + struct hantro_ctx *ctx = priv; + int ret; + + src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE; + src_vq->io_modes = VB2_MMAP | VB2_DMABUF; + src_vq->drv_priv = ctx; + src_vq->ops = &hantro_queue_ops; + src_vq->mem_ops = &vb2_dma_contig_memops; + + /* + * Driver does mostly sequential access, so sacrifice TLB efficiency + * for faster allocation. Also, no CPU access on the source queue, + * so no kernel mapping needed. + */ + src_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES | + DMA_ATTR_NO_KERNEL_MAPPING; + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; + src_vq->lock = &ctx->dev->vpu_mutex; + src_vq->dev = ctx->dev->v4l2_dev.dev; + src_vq->supports_requests = true; + + ret = vb2_queue_init(src_vq); + if (ret) + return ret; + + dst_vq->bidirectional = true; + dst_vq->mem_ops = &vb2_dma_contig_memops; + dst_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES; + /* + * The Kernel needs access to the JPEG destination buffer for the + * JPEG encoder to fill in the JPEG headers. + */ + if (!ctx->is_encoder) + dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING; + + dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; + dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; + dst_vq->drv_priv = ctx; + dst_vq->ops = &hantro_queue_ops; + dst_vq->buf_struct_size = sizeof(struct hantro_decoded_buffer); + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; + dst_vq->lock = &ctx->dev->vpu_mutex; + dst_vq->dev = ctx->dev->v4l2_dev.dev; + + return vb2_queue_init(dst_vq); +} + +static int hantro_try_ctrl(struct v4l2_ctrl *ctrl) +{ + if (ctrl->id == V4L2_CID_STATELESS_H264_SPS) { + const struct v4l2_ctrl_h264_sps *sps = ctrl->p_new.p_h264_sps; + + if (sps->chroma_format_idc > 1) + /* Only 4:0:0 and 4:2:0 are supported */ + return -EINVAL; + if (sps->bit_depth_luma_minus8 != sps->bit_depth_chroma_minus8) + /* Luma and chroma bit depth mismatch */ + return -EINVAL; + if (sps->bit_depth_luma_minus8 != 0) + /* Only 8-bit is supported */ + return -EINVAL; + } else if (ctrl->id == V4L2_CID_STATELESS_HEVC_SPS) { + const struct v4l2_ctrl_hevc_sps *sps = ctrl->p_new.p_hevc_sps; + + if (sps->bit_depth_luma_minus8 != sps->bit_depth_chroma_minus8) + /* Luma and chroma bit depth mismatch */ + return -EINVAL; + if (sps->bit_depth_luma_minus8 != 0) + /* Only 8-bit is supported */ + return -EINVAL; + } else if (ctrl->id == V4L2_CID_STATELESS_VP9_FRAME) { + const struct v4l2_ctrl_vp9_frame *dec_params = ctrl->p_new.p_vp9_frame; + + /* We only support profile 0 */ + if (dec_params->profile != 0) + return -EINVAL; + } + return 0; +} + +static int hantro_jpeg_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct hantro_ctx *ctx; + + ctx = container_of(ctrl->handler, + struct hantro_ctx, ctrl_handler); + + vpu_debug(1, "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val); + + switch (ctrl->id) { + case V4L2_CID_JPEG_COMPRESSION_QUALITY: + ctx->jpeg_quality = ctrl->val; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int hantro_vp9_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct hantro_ctx *ctx; + + ctx = container_of(ctrl->handler, + struct hantro_ctx, ctrl_handler); + + switch (ctrl->id) { + case V4L2_CID_STATELESS_VP9_FRAME: + ctx->bit_depth = ctrl->p_new.p_vp9_frame->bit_depth; + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct v4l2_ctrl_ops hantro_ctrl_ops = { + .try_ctrl = hantro_try_ctrl, +}; + +static const struct v4l2_ctrl_ops hantro_jpeg_ctrl_ops = { + .s_ctrl = hantro_jpeg_s_ctrl, +}; + +static const struct v4l2_ctrl_ops hantro_vp9_ctrl_ops = { + .s_ctrl = hantro_vp9_s_ctrl, +}; + +#define HANTRO_JPEG_ACTIVE_MARKERS (V4L2_JPEG_ACTIVE_MARKER_APP0 | \ + V4L2_JPEG_ACTIVE_MARKER_COM | \ + V4L2_JPEG_ACTIVE_MARKER_DQT | \ + V4L2_JPEG_ACTIVE_MARKER_DHT) + +static const struct hantro_ctrl controls[] = { + { + .codec = HANTRO_JPEG_ENCODER, + .cfg = { + .id = V4L2_CID_JPEG_COMPRESSION_QUALITY, + .min = 5, + .max = 100, + .step = 1, + .def = 50, + .ops = &hantro_jpeg_ctrl_ops, + }, + }, { + .codec = HANTRO_JPEG_ENCODER, + .cfg = { + .id = V4L2_CID_JPEG_ACTIVE_MARKER, + .max = HANTRO_JPEG_ACTIVE_MARKERS, + .def = HANTRO_JPEG_ACTIVE_MARKERS, + /* + * Changing the set of active markers/segments also + * messes up the alignment of the JPEG header, which + * is needed to allow the hardware to write directly + * to the output buffer. Implementing this introduces + * a lot of complexity for little gain, as the markers + * enabled is already the minimum required set. + */ + .flags = V4L2_CTRL_FLAG_READ_ONLY, + }, + }, { + .codec = HANTRO_MPEG2_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_MPEG2_SEQUENCE, + }, + }, { + .codec = HANTRO_MPEG2_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_MPEG2_PICTURE, + }, + }, { + .codec = HANTRO_MPEG2_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_MPEG2_QUANTISATION, + }, + }, { + .codec = HANTRO_VP8_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_VP8_FRAME, + }, + }, { + .codec = HANTRO_H264_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_H264_DECODE_PARAMS, + }, + }, { + .codec = HANTRO_H264_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_H264_SPS, + .ops = &hantro_ctrl_ops, + }, + }, { + .codec = HANTRO_H264_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_H264_PPS, + }, + }, { + .codec = HANTRO_H264_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_H264_SCALING_MATRIX, + }, + }, { + .codec = HANTRO_H264_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_H264_DECODE_MODE, + .min = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED, + .def = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED, + .max = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED, + }, + }, { + .codec = HANTRO_H264_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_H264_START_CODE, + .min = V4L2_STATELESS_H264_START_CODE_ANNEX_B, + .def = V4L2_STATELESS_H264_START_CODE_ANNEX_B, + .max = V4L2_STATELESS_H264_START_CODE_ANNEX_B, + }, + }, { + .codec = HANTRO_H264_DECODER, + .cfg = { + .id = V4L2_CID_MPEG_VIDEO_H264_PROFILE, + .min = V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE, + .max = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH, + .menu_skip_mask = + BIT(V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED), + .def = V4L2_MPEG_VIDEO_H264_PROFILE_MAIN, + } + }, { + .codec = HANTRO_HEVC_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_HEVC_DECODE_MODE, + .min = V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED, + .max = V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED, + .def = V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED, + }, + }, { + .codec = HANTRO_HEVC_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_HEVC_START_CODE, + .min = V4L2_STATELESS_HEVC_START_CODE_ANNEX_B, + .max = V4L2_STATELESS_HEVC_START_CODE_ANNEX_B, + .def = V4L2_STATELESS_HEVC_START_CODE_ANNEX_B, + }, + }, { + .codec = HANTRO_HEVC_DECODER, + .cfg = { + .id = V4L2_CID_MPEG_VIDEO_HEVC_PROFILE, + .min = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN, + .max = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10, + .def = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN, + }, + }, { + .codec = HANTRO_HEVC_DECODER, + .cfg = { + .id = V4L2_CID_MPEG_VIDEO_HEVC_LEVEL, + .min = V4L2_MPEG_VIDEO_HEVC_LEVEL_1, + .max = V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1, + }, + }, { + .codec = HANTRO_HEVC_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_HEVC_SPS, + .ops = &hantro_ctrl_ops, + }, + }, { + .codec = HANTRO_HEVC_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_HEVC_PPS, + }, + }, { + .codec = HANTRO_HEVC_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_HEVC_DECODE_PARAMS, + }, + }, { + .codec = HANTRO_HEVC_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_HEVC_SCALING_MATRIX, + }, + }, { + .codec = HANTRO_VP9_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_VP9_FRAME, + .ops = &hantro_vp9_ctrl_ops, + }, + }, { + .codec = HANTRO_VP9_DECODER, + .cfg = { + .id = V4L2_CID_STATELESS_VP9_COMPRESSED_HDR, + }, + }, +}; + +static int hantro_ctrls_setup(struct hantro_dev *vpu, + struct hantro_ctx *ctx, + int allowed_codecs) +{ + int i, num_ctrls = ARRAY_SIZE(controls); + + v4l2_ctrl_handler_init(&ctx->ctrl_handler, num_ctrls); + + for (i = 0; i < num_ctrls; i++) { + if (!(allowed_codecs & controls[i].codec)) + continue; + + v4l2_ctrl_new_custom(&ctx->ctrl_handler, + &controls[i].cfg, NULL); + if (ctx->ctrl_handler.error) { + vpu_err("Adding control (%d) failed %d\n", + controls[i].cfg.id, + ctx->ctrl_handler.error); + v4l2_ctrl_handler_free(&ctx->ctrl_handler); + return ctx->ctrl_handler.error; + } + } + return v4l2_ctrl_handler_setup(&ctx->ctrl_handler); +} + +/* + * V4L2 file operations. + */ + +static int hantro_open(struct file *filp) +{ + struct hantro_dev *vpu = video_drvdata(filp); + struct video_device *vdev = video_devdata(filp); + struct hantro_func *func = hantro_vdev_to_func(vdev); + struct hantro_ctx *ctx; + int allowed_codecs, ret; + + /* + * We do not need any extra locking here, because we operate only + * on local data here, except reading few fields from dev, which + * do not change through device's lifetime (which is guaranteed by + * reference on module from open()) and V4L2 internal objects (such + * as vdev and ctx->fh), which have proper locking done in respective + * helper functions used here. + */ + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->dev = vpu; + if (func->id == MEDIA_ENT_F_PROC_VIDEO_ENCODER) { + allowed_codecs = vpu->variant->codec & HANTRO_ENCODERS; + ctx->is_encoder = true; + } else if (func->id == MEDIA_ENT_F_PROC_VIDEO_DECODER) { + allowed_codecs = vpu->variant->codec & HANTRO_DECODERS; + ctx->is_encoder = false; + } else { + ret = -ENODEV; + goto err_ctx_free; + } + + ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(vpu->m2m_dev, ctx, queue_init); + if (IS_ERR(ctx->fh.m2m_ctx)) { + ret = PTR_ERR(ctx->fh.m2m_ctx); + goto err_ctx_free; + } + + v4l2_fh_init(&ctx->fh, vdev); + filp->private_data = &ctx->fh; + v4l2_fh_add(&ctx->fh); + + hantro_reset_fmts(ctx); + + ret = hantro_ctrls_setup(vpu, ctx, allowed_codecs); + if (ret) { + vpu_err("Failed to set up controls\n"); + goto err_fh_free; + } + ctx->fh.ctrl_handler = &ctx->ctrl_handler; + + return 0; + +err_fh_free: + v4l2_fh_del(&ctx->fh); + v4l2_fh_exit(&ctx->fh); +err_ctx_free: + kfree(ctx); + return ret; +} + +static int hantro_release(struct file *filp) +{ + struct hantro_ctx *ctx = + container_of(filp->private_data, struct hantro_ctx, fh); + + /* + * No need for extra locking because this was the last reference + * to this file. + */ + v4l2_m2m_ctx_release(ctx->fh.m2m_ctx); + v4l2_fh_del(&ctx->fh); + v4l2_fh_exit(&ctx->fh); + v4l2_ctrl_handler_free(&ctx->ctrl_handler); + kfree(ctx); + + return 0; +} + +static const struct v4l2_file_operations hantro_fops = { + .owner = THIS_MODULE, + .open = hantro_open, + .release = hantro_release, + .poll = v4l2_m2m_fop_poll, + .unlocked_ioctl = video_ioctl2, + .mmap = v4l2_m2m_fop_mmap, +}; + +static const struct of_device_id of_hantro_match[] = { +#ifdef CONFIG_VIDEO_HANTRO_ROCKCHIP + { .compatible = "rockchip,px30-vpu", .data = &px30_vpu_variant, }, + { .compatible = "rockchip,rk3036-vpu", .data = &rk3036_vpu_variant, }, + { .compatible = "rockchip,rk3066-vpu", .data = &rk3066_vpu_variant, }, + { .compatible = "rockchip,rk3288-vpu", .data = &rk3288_vpu_variant, }, + { .compatible = "rockchip,rk3328-vpu", .data = &rk3328_vpu_variant, }, + { .compatible = "rockchip,rk3399-vpu", .data = &rk3399_vpu_variant, }, + { .compatible = "rockchip,rk3568-vepu", .data = &rk3568_vepu_variant, }, + { .compatible = "rockchip,rk3568-vpu", .data = &rk3568_vpu_variant, }, +#endif +#ifdef CONFIG_VIDEO_HANTRO_IMX8M + { .compatible = "nxp,imx8mm-vpu-g1", .data = &imx8mm_vpu_g1_variant, }, + { .compatible = "nxp,imx8mq-vpu", .data = &imx8mq_vpu_variant, }, + { .compatible = "nxp,imx8mq-vpu-g1", .data = &imx8mq_vpu_g1_variant }, + { .compatible = "nxp,imx8mq-vpu-g2", .data = &imx8mq_vpu_g2_variant }, +#endif +#ifdef CONFIG_VIDEO_HANTRO_SAMA5D4 + { .compatible = "microchip,sama5d4-vdec", .data = &sama5d4_vdec_variant, }, +#endif +#ifdef CONFIG_VIDEO_HANTRO_SUNXI + { .compatible = "allwinner,sun50i-h6-vpu-g2", .data = &sunxi_vpu_variant, }, +#endif + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, of_hantro_match); + +static int hantro_register_entity(struct media_device *mdev, + struct media_entity *entity, + const char *entity_name, + struct media_pad *pads, int num_pads, + int function, struct video_device *vdev) +{ + char *name; + int ret; + + entity->obj_type = MEDIA_ENTITY_TYPE_BASE; + if (function == MEDIA_ENT_F_IO_V4L) { + entity->info.dev.major = VIDEO_MAJOR; + entity->info.dev.minor = vdev->minor; + } + + name = devm_kasprintf(mdev->dev, GFP_KERNEL, "%s-%s", vdev->name, + entity_name); + if (!name) + return -ENOMEM; + + entity->name = name; + entity->function = function; + + ret = media_entity_pads_init(entity, num_pads, pads); + if (ret) + return ret; + + ret = media_device_register_entity(mdev, entity); + if (ret) + return ret; + + return 0; +} + +static int hantro_attach_func(struct hantro_dev *vpu, + struct hantro_func *func) +{ + struct media_device *mdev = &vpu->mdev; + struct media_link *link; + int ret; + + /* Create the three encoder entities with their pads */ + func->source_pad.flags = MEDIA_PAD_FL_SOURCE; + ret = hantro_register_entity(mdev, &func->vdev.entity, "source", + &func->source_pad, 1, MEDIA_ENT_F_IO_V4L, + &func->vdev); + if (ret) + return ret; + + func->proc_pads[0].flags = MEDIA_PAD_FL_SINK; + func->proc_pads[1].flags = MEDIA_PAD_FL_SOURCE; + ret = hantro_register_entity(mdev, &func->proc, "proc", + func->proc_pads, 2, func->id, + &func->vdev); + if (ret) + goto err_rel_entity0; + + func->sink_pad.flags = MEDIA_PAD_FL_SINK; + ret = hantro_register_entity(mdev, &func->sink, "sink", + &func->sink_pad, 1, MEDIA_ENT_F_IO_V4L, + &func->vdev); + if (ret) + goto err_rel_entity1; + + /* Connect the three entities */ + ret = media_create_pad_link(&func->vdev.entity, 0, &func->proc, 0, + MEDIA_LNK_FL_IMMUTABLE | + MEDIA_LNK_FL_ENABLED); + if (ret) + goto err_rel_entity2; + + ret = media_create_pad_link(&func->proc, 1, &func->sink, 0, + MEDIA_LNK_FL_IMMUTABLE | + MEDIA_LNK_FL_ENABLED); + if (ret) + goto err_rm_links0; + + /* Create video interface */ + func->intf_devnode = media_devnode_create(mdev, MEDIA_INTF_T_V4L_VIDEO, + 0, VIDEO_MAJOR, + func->vdev.minor); + if (!func->intf_devnode) { + ret = -ENOMEM; + goto err_rm_links1; + } + + /* Connect the two DMA engines to the interface */ + link = media_create_intf_link(&func->vdev.entity, + &func->intf_devnode->intf, + MEDIA_LNK_FL_IMMUTABLE | + MEDIA_LNK_FL_ENABLED); + if (!link) { + ret = -ENOMEM; + goto err_rm_devnode; + } + + link = media_create_intf_link(&func->sink, &func->intf_devnode->intf, + MEDIA_LNK_FL_IMMUTABLE | + MEDIA_LNK_FL_ENABLED); + if (!link) { + ret = -ENOMEM; + goto err_rm_devnode; + } + return 0; + +err_rm_devnode: + media_devnode_remove(func->intf_devnode); + +err_rm_links1: + media_entity_remove_links(&func->sink); + +err_rm_links0: + media_entity_remove_links(&func->proc); + media_entity_remove_links(&func->vdev.entity); + +err_rel_entity2: + media_device_unregister_entity(&func->sink); + +err_rel_entity1: + media_device_unregister_entity(&func->proc); + +err_rel_entity0: + media_device_unregister_entity(&func->vdev.entity); + return ret; +} + +static void hantro_detach_func(struct hantro_func *func) +{ + media_devnode_remove(func->intf_devnode); + media_entity_remove_links(&func->sink); + media_entity_remove_links(&func->proc); + media_entity_remove_links(&func->vdev.entity); + media_device_unregister_entity(&func->sink); + media_device_unregister_entity(&func->proc); + media_device_unregister_entity(&func->vdev.entity); +} + +static int hantro_add_func(struct hantro_dev *vpu, unsigned int funcid) +{ + const struct of_device_id *match; + struct hantro_func *func; + struct video_device *vfd; + int ret; + + match = of_match_node(of_hantro_match, vpu->dev->of_node); + func = devm_kzalloc(vpu->dev, sizeof(*func), GFP_KERNEL); + if (!func) { + v4l2_err(&vpu->v4l2_dev, "Failed to allocate video device\n"); + return -ENOMEM; + } + + func->id = funcid; + + vfd = &func->vdev; + vfd->fops = &hantro_fops; + vfd->release = video_device_release_empty; + vfd->lock = &vpu->vpu_mutex; + vfd->v4l2_dev = &vpu->v4l2_dev; + vfd->vfl_dir = VFL_DIR_M2M; + vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE; + vfd->ioctl_ops = &hantro_ioctl_ops; + snprintf(vfd->name, sizeof(vfd->name), "%s-%s", match->compatible, + funcid == MEDIA_ENT_F_PROC_VIDEO_ENCODER ? "enc" : "dec"); + + if (funcid == MEDIA_ENT_F_PROC_VIDEO_ENCODER) { + vpu->encoder = func; + } else { + vpu->decoder = func; + v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD); + v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD); + } + + video_set_drvdata(vfd, vpu); + + ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1); + if (ret) { + v4l2_err(&vpu->v4l2_dev, "Failed to register video device\n"); + return ret; + } + + ret = hantro_attach_func(vpu, func); + if (ret) { + v4l2_err(&vpu->v4l2_dev, + "Failed to attach functionality to the media device\n"); + goto err_unreg_dev; + } + + v4l2_info(&vpu->v4l2_dev, "registered %s as /dev/video%d\n", vfd->name, + vfd->num); + + return 0; + +err_unreg_dev: + video_unregister_device(vfd); + return ret; +} + +static int hantro_add_enc_func(struct hantro_dev *vpu) +{ + if (!vpu->variant->enc_fmts) + return 0; + + return hantro_add_func(vpu, MEDIA_ENT_F_PROC_VIDEO_ENCODER); +} + +static int hantro_add_dec_func(struct hantro_dev *vpu) +{ + if (!vpu->variant->dec_fmts) + return 0; + + return hantro_add_func(vpu, MEDIA_ENT_F_PROC_VIDEO_DECODER); +} + +static void hantro_remove_func(struct hantro_dev *vpu, + unsigned int funcid) +{ + struct hantro_func *func; + + if (funcid == MEDIA_ENT_F_PROC_VIDEO_ENCODER) + func = vpu->encoder; + else + func = vpu->decoder; + + if (!func) + return; + + hantro_detach_func(func); + video_unregister_device(&func->vdev); +} + +static void hantro_remove_enc_func(struct hantro_dev *vpu) +{ + hantro_remove_func(vpu, MEDIA_ENT_F_PROC_VIDEO_ENCODER); +} + +static void hantro_remove_dec_func(struct hantro_dev *vpu) +{ + hantro_remove_func(vpu, MEDIA_ENT_F_PROC_VIDEO_DECODER); +} + +static const struct media_device_ops hantro_m2m_media_ops = { + .req_validate = vb2_request_validate, + .req_queue = v4l2_m2m_request_queue, +}; + +static int hantro_probe(struct platform_device *pdev) +{ + const struct of_device_id *match; + struct hantro_dev *vpu; + struct resource *res; + int num_bases; + int i, ret; + + vpu = devm_kzalloc(&pdev->dev, sizeof(*vpu), GFP_KERNEL); + if (!vpu) + return -ENOMEM; + + vpu->dev = &pdev->dev; + vpu->pdev = pdev; + mutex_init(&vpu->vpu_mutex); + spin_lock_init(&vpu->irqlock); + + match = of_match_node(of_hantro_match, pdev->dev.of_node); + vpu->variant = match->data; + + /* + * Support for nxp,imx8mq-vpu is kept for backwards compatibility + * but it's deprecated. Please update your DTS file to use + * nxp,imx8mq-vpu-g1 or nxp,imx8mq-vpu-g2 instead. + */ + if (of_device_is_compatible(pdev->dev.of_node, "nxp,imx8mq-vpu")) + dev_warn(&pdev->dev, "%s compatible is deprecated\n", + match->compatible); + + INIT_DELAYED_WORK(&vpu->watchdog_work, hantro_watchdog); + + vpu->clocks = devm_kcalloc(&pdev->dev, vpu->variant->num_clocks, + sizeof(*vpu->clocks), GFP_KERNEL); + if (!vpu->clocks) + return -ENOMEM; + + if (vpu->variant->num_clocks > 1) { + for (i = 0; i < vpu->variant->num_clocks; i++) + vpu->clocks[i].id = vpu->variant->clk_names[i]; + + ret = devm_clk_bulk_get(&pdev->dev, vpu->variant->num_clocks, + vpu->clocks); + if (ret) + return ret; + } else { + /* + * If the driver has a single clk, chances are there will be no + * actual name in the DT bindings. + */ + vpu->clocks[0].clk = devm_clk_get(&pdev->dev, NULL); + if (IS_ERR(vpu->clocks[0].clk)) + return PTR_ERR(vpu->clocks[0].clk); + } + + vpu->resets = devm_reset_control_array_get(&pdev->dev, false, true); + if (IS_ERR(vpu->resets)) + return PTR_ERR(vpu->resets); + + num_bases = vpu->variant->num_regs ?: 1; + vpu->reg_bases = devm_kcalloc(&pdev->dev, num_bases, + sizeof(*vpu->reg_bases), GFP_KERNEL); + if (!vpu->reg_bases) + return -ENOMEM; + + for (i = 0; i < num_bases; i++) { + res = vpu->variant->reg_names ? + platform_get_resource_byname(vpu->pdev, IORESOURCE_MEM, + vpu->variant->reg_names[i]) : + platform_get_resource(vpu->pdev, IORESOURCE_MEM, 0); + vpu->reg_bases[i] = devm_ioremap_resource(vpu->dev, res); + if (IS_ERR(vpu->reg_bases[i])) + return PTR_ERR(vpu->reg_bases[i]); + } + vpu->enc_base = vpu->reg_bases[0] + vpu->variant->enc_offset; + vpu->dec_base = vpu->reg_bases[0] + vpu->variant->dec_offset; + + /** + * TODO: Eventually allow taking advantage of full 64-bit address space. + * Until then we assume the MSB portion of buffers' base addresses is + * always 0 due to this masking operation. + */ + ret = dma_set_coherent_mask(vpu->dev, DMA_BIT_MASK(32)); + if (ret) { + dev_err(vpu->dev, "Could not set DMA coherent mask.\n"); + return ret; + } + vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32)); + + for (i = 0; i < vpu->variant->num_irqs; i++) { + const char *irq_name; + int irq; + + if (!vpu->variant->irqs[i].handler) + continue; + + if (vpu->variant->num_irqs > 1) { + irq_name = vpu->variant->irqs[i].name; + irq = platform_get_irq_byname(vpu->pdev, irq_name); + } else { + /* + * If the driver has a single IRQ, chances are there + * will be no actual name in the DT bindings. + */ + irq_name = "default"; + irq = platform_get_irq(vpu->pdev, 0); + } + if (irq <= 0) + return -ENXIO; + + ret = devm_request_irq(vpu->dev, irq, + vpu->variant->irqs[i].handler, 0, + dev_name(vpu->dev), vpu); + if (ret) { + dev_err(vpu->dev, "Could not request %s IRQ.\n", + irq_name); + return ret; + } + } + + if (vpu->variant->init) { + ret = vpu->variant->init(vpu); + if (ret) { + dev_err(&pdev->dev, "Failed to init VPU hardware\n"); + return ret; + } + } + + pm_runtime_set_autosuspend_delay(vpu->dev, 100); + pm_runtime_use_autosuspend(vpu->dev); + pm_runtime_enable(vpu->dev); + + ret = reset_control_deassert(vpu->resets); + if (ret) { + dev_err(&pdev->dev, "Failed to deassert resets\n"); + goto err_pm_disable; + } + + ret = clk_bulk_prepare(vpu->variant->num_clocks, vpu->clocks); + if (ret) { + dev_err(&pdev->dev, "Failed to prepare clocks\n"); + goto err_rst_assert; + } + + ret = v4l2_device_register(&pdev->dev, &vpu->v4l2_dev); + if (ret) { + dev_err(&pdev->dev, "Failed to register v4l2 device\n"); + goto err_clk_unprepare; + } + platform_set_drvdata(pdev, vpu); + + vpu->m2m_dev = v4l2_m2m_init(&vpu_m2m_ops); + if (IS_ERR(vpu->m2m_dev)) { + v4l2_err(&vpu->v4l2_dev, "Failed to init mem2mem device\n"); + ret = PTR_ERR(vpu->m2m_dev); + goto err_v4l2_unreg; + } + + vpu->mdev.dev = vpu->dev; + strscpy(vpu->mdev.model, DRIVER_NAME, sizeof(vpu->mdev.model)); + strscpy(vpu->mdev.bus_info, "platform: " DRIVER_NAME, + sizeof(vpu->mdev.bus_info)); + media_device_init(&vpu->mdev); + vpu->mdev.ops = &hantro_m2m_media_ops; + vpu->v4l2_dev.mdev = &vpu->mdev; + + ret = hantro_add_enc_func(vpu); + if (ret) { + dev_err(&pdev->dev, "Failed to register encoder\n"); + goto err_m2m_rel; + } + + ret = hantro_add_dec_func(vpu); + if (ret) { + dev_err(&pdev->dev, "Failed to register decoder\n"); + goto err_rm_enc_func; + } + + ret = media_device_register(&vpu->mdev); + if (ret) { + v4l2_err(&vpu->v4l2_dev, "Failed to register mem2mem media device\n"); + goto err_rm_dec_func; + } + + return 0; + +err_rm_dec_func: + hantro_remove_dec_func(vpu); +err_rm_enc_func: + hantro_remove_enc_func(vpu); +err_m2m_rel: + media_device_cleanup(&vpu->mdev); + v4l2_m2m_release(vpu->m2m_dev); +err_v4l2_unreg: + v4l2_device_unregister(&vpu->v4l2_dev); +err_clk_unprepare: + clk_bulk_unprepare(vpu->variant->num_clocks, vpu->clocks); +err_rst_assert: + reset_control_assert(vpu->resets); +err_pm_disable: + pm_runtime_dont_use_autosuspend(vpu->dev); + pm_runtime_disable(vpu->dev); + return ret; +} + +static int hantro_remove(struct platform_device *pdev) +{ + struct hantro_dev *vpu = platform_get_drvdata(pdev); + + v4l2_info(&vpu->v4l2_dev, "Removing %s\n", pdev->name); + + media_device_unregister(&vpu->mdev); + hantro_remove_dec_func(vpu); + hantro_remove_enc_func(vpu); + media_device_cleanup(&vpu->mdev); + v4l2_m2m_release(vpu->m2m_dev); + v4l2_device_unregister(&vpu->v4l2_dev); + clk_bulk_unprepare(vpu->variant->num_clocks, vpu->clocks); + reset_control_assert(vpu->resets); + pm_runtime_dont_use_autosuspend(vpu->dev); + pm_runtime_disable(vpu->dev); + return 0; +} + +#ifdef CONFIG_PM +static int hantro_runtime_resume(struct device *dev) +{ + struct hantro_dev *vpu = dev_get_drvdata(dev); + + if (vpu->variant->runtime_resume) + return vpu->variant->runtime_resume(vpu); + + return 0; +} +#endif + +static const struct dev_pm_ops hantro_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(NULL, hantro_runtime_resume, NULL) +}; + +static struct platform_driver hantro_driver = { + .probe = hantro_probe, + .remove = hantro_remove, + .driver = { + .name = DRIVER_NAME, + .of_match_table = of_match_ptr(of_hantro_match), + .pm = &hantro_pm_ops, + }, +}; +module_platform_driver(hantro_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Alpha Lin <Alpha.Lin@Rock-Chips.com>"); +MODULE_AUTHOR("Tomasz Figa <tfiga@chromium.org>"); +MODULE_AUTHOR("Ezequiel Garcia <ezequiel@collabora.com>"); +MODULE_DESCRIPTION("Hantro VPU codec driver"); |