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1// SPDX-License-Identifier: GPL-2.02/*3 * Hantro VPU codec driver4 *5 * Copyright (C) 2018 Collabora, Ltd.6 * Copyright 2018 Google LLC.7 *	Tomasz Figa <tfiga@chromium.org>8 *9 * Based on s5p-mfc driver by Samsung Electronics Co., Ltd.10 * Copyright (C) 2011 Samsung Electronics Co., Ltd.11 */12 13#include <linux/clk.h>14#include <linux/module.h>15#include <linux/of.h>16#include <linux/platform_device.h>17#include <linux/pm.h>18#include <linux/pm_runtime.h>19#include <linux/slab.h>20#include <linux/videodev2.h>21#include <linux/workqueue.h>22#include <media/v4l2-event.h>23#include <media/v4l2-mem2mem.h>24#include <media/videobuf2-core.h>25#include <media/videobuf2-vmalloc.h>26 27#include "hantro_v4l2.h"28#include "hantro.h"29#include "hantro_hw.h"30 31#define DRIVER_NAME "hantro-vpu"32 33int hantro_debug;34module_param_named(debug, hantro_debug, int, 0644);35MODULE_PARM_DESC(debug,36		 "Debug level - higher value produces more verbose messages");37 38void *hantro_get_ctrl(struct hantro_ctx *ctx, u32 id)39{40	struct v4l2_ctrl *ctrl;41 42	ctrl = v4l2_ctrl_find(&ctx->ctrl_handler, id);43	return ctrl ? ctrl->p_cur.p : NULL;44}45 46dma_addr_t hantro_get_ref(struct hantro_ctx *ctx, u64 ts)47{48	struct vb2_queue *q = v4l2_m2m_get_dst_vq(ctx->fh.m2m_ctx);49	struct vb2_buffer *buf;50 51	buf = vb2_find_buffer(q, ts);52	if (!buf)53		return 0;54	return hantro_get_dec_buf_addr(ctx, buf);55}56 57static const struct v4l2_event hantro_eos_event = {58	.type = V4L2_EVENT_EOS59};60 61static void hantro_job_finish_no_pm(struct hantro_dev *vpu,62				    struct hantro_ctx *ctx,63				    enum vb2_buffer_state result)64{65	struct vb2_v4l2_buffer *src, *dst;66 67	src = v4l2_m2m_next_src_buf(ctx->fh.m2m_ctx);68	dst = v4l2_m2m_next_dst_buf(ctx->fh.m2m_ctx);69 70	if (WARN_ON(!src))71		return;72	if (WARN_ON(!dst))73		return;74 75	src->sequence = ctx->sequence_out++;76	dst->sequence = ctx->sequence_cap++;77 78	if (v4l2_m2m_is_last_draining_src_buf(ctx->fh.m2m_ctx, src)) {79		dst->flags |= V4L2_BUF_FLAG_LAST;80		v4l2_event_queue_fh(&ctx->fh, &hantro_eos_event);81		v4l2_m2m_mark_stopped(ctx->fh.m2m_ctx);82	}83 84	v4l2_m2m_buf_done_and_job_finish(ctx->dev->m2m_dev, ctx->fh.m2m_ctx,85					 result);86}87 88static void hantro_job_finish(struct hantro_dev *vpu,89			      struct hantro_ctx *ctx,90			      enum vb2_buffer_state result)91{92	pm_runtime_mark_last_busy(vpu->dev);93	pm_runtime_put_autosuspend(vpu->dev);94 95	clk_bulk_disable(vpu->variant->num_clocks, vpu->clocks);96 97	hantro_job_finish_no_pm(vpu, ctx, result);98}99 100void hantro_irq_done(struct hantro_dev *vpu,101		     enum vb2_buffer_state result)102{103	struct hantro_ctx *ctx =104		v4l2_m2m_get_curr_priv(vpu->m2m_dev);105 106	/*107	 * If cancel_delayed_work returns false108	 * the timeout expired. The watchdog is running,109	 * and will take care of finishing the job.110	 */111	if (cancel_delayed_work(&vpu->watchdog_work)) {112		if (result == VB2_BUF_STATE_DONE && ctx->codec_ops->done)113			ctx->codec_ops->done(ctx);114		hantro_job_finish(vpu, ctx, result);115	}116}117 118void hantro_watchdog(struct work_struct *work)119{120	struct hantro_dev *vpu;121	struct hantro_ctx *ctx;122 123	vpu = container_of(to_delayed_work(work),124			   struct hantro_dev, watchdog_work);125	ctx = v4l2_m2m_get_curr_priv(vpu->m2m_dev);126	if (ctx) {127		vpu_err("frame processing timed out!\n");128		if (ctx->codec_ops->reset)129			ctx->codec_ops->reset(ctx);130		hantro_job_finish(vpu, ctx, VB2_BUF_STATE_ERROR);131	}132}133 134void hantro_start_prepare_run(struct hantro_ctx *ctx)135{136	struct vb2_v4l2_buffer *src_buf;137 138	src_buf = hantro_get_src_buf(ctx);139	v4l2_ctrl_request_setup(src_buf->vb2_buf.req_obj.req,140				&ctx->ctrl_handler);141 142	if (!ctx->is_encoder && !ctx->dev->variant->late_postproc) {143		if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))144			hantro_postproc_enable(ctx);145		else146			hantro_postproc_disable(ctx);147	}148}149 150void hantro_end_prepare_run(struct hantro_ctx *ctx)151{152	struct vb2_v4l2_buffer *src_buf;153 154	if (!ctx->is_encoder && ctx->dev->variant->late_postproc) {155		if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))156			hantro_postproc_enable(ctx);157		else158			hantro_postproc_disable(ctx);159	}160 161	src_buf = hantro_get_src_buf(ctx);162	v4l2_ctrl_request_complete(src_buf->vb2_buf.req_obj.req,163				   &ctx->ctrl_handler);164 165	/* Kick the watchdog. */166	schedule_delayed_work(&ctx->dev->watchdog_work,167			      msecs_to_jiffies(2000));168}169 170static void device_run(void *priv)171{172	struct hantro_ctx *ctx = priv;173	struct vb2_v4l2_buffer *src, *dst;174	int ret;175 176	src = hantro_get_src_buf(ctx);177	dst = hantro_get_dst_buf(ctx);178 179	ret = pm_runtime_resume_and_get(ctx->dev->dev);180	if (ret < 0)181		goto err_cancel_job;182 183	ret = clk_bulk_enable(ctx->dev->variant->num_clocks, ctx->dev->clocks);184	if (ret)185		goto err_cancel_job;186 187	v4l2_m2m_buf_copy_metadata(src, dst, true);188 189	if (ctx->codec_ops->run(ctx))190		goto err_cancel_job;191 192	return;193 194err_cancel_job:195	hantro_job_finish_no_pm(ctx->dev, ctx, VB2_BUF_STATE_ERROR);196}197 198static const struct v4l2_m2m_ops vpu_m2m_ops = {199	.device_run = device_run,200};201 202static int203queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)204{205	struct hantro_ctx *ctx = priv;206	int ret;207 208	src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;209	src_vq->io_modes = VB2_MMAP | VB2_DMABUF;210	src_vq->drv_priv = ctx;211	src_vq->ops = &hantro_queue_ops;212	src_vq->mem_ops = &vb2_dma_contig_memops;213 214	/*215	 * Driver does mostly sequential access, so sacrifice TLB efficiency216	 * for faster allocation. Also, no CPU access on the source queue,217	 * so no kernel mapping needed.218	 */219	src_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES |220			    DMA_ATTR_NO_KERNEL_MAPPING;221	src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);222	src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;223	src_vq->lock = &ctx->dev->vpu_mutex;224	src_vq->dev = ctx->dev->v4l2_dev.dev;225	src_vq->supports_requests = true;226 227	ret = vb2_queue_init(src_vq);228	if (ret)229		return ret;230 231	dst_vq->bidirectional = true;232	dst_vq->mem_ops = &vb2_dma_contig_memops;233	dst_vq->dma_attrs = DMA_ATTR_ALLOC_SINGLE_PAGES;234	/*235	 * The Kernel needs access to the JPEG destination buffer for the236	 * JPEG encoder to fill in the JPEG headers.237	 */238	if (!ctx->is_encoder) {239		dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;240		dst_vq->max_num_buffers = MAX_POSTPROC_BUFFERS;241	}242 243	dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;244	dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;245	dst_vq->drv_priv = ctx;246	dst_vq->ops = &hantro_queue_ops;247	dst_vq->buf_struct_size = sizeof(struct hantro_decoded_buffer);248	dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;249	dst_vq->lock = &ctx->dev->vpu_mutex;250	dst_vq->dev = ctx->dev->v4l2_dev.dev;251 252	return vb2_queue_init(dst_vq);253}254 255static int hantro_try_ctrl(struct v4l2_ctrl *ctrl)256{257	if (ctrl->id == V4L2_CID_STATELESS_H264_SPS) {258		const struct v4l2_ctrl_h264_sps *sps = ctrl->p_new.p_h264_sps;259 260		if (sps->chroma_format_idc > 1)261			/* Only 4:0:0 and 4:2:0 are supported */262			return -EINVAL;263		if (sps->bit_depth_luma_minus8 != sps->bit_depth_chroma_minus8)264			/* Luma and chroma bit depth mismatch */265			return -EINVAL;266		if (sps->bit_depth_luma_minus8 != 0)267			/* Only 8-bit is supported */268			return -EINVAL;269	} else if (ctrl->id == V4L2_CID_STATELESS_HEVC_SPS) {270		const struct v4l2_ctrl_hevc_sps *sps = ctrl->p_new.p_hevc_sps;271 272		if (sps->bit_depth_luma_minus8 != 0 && sps->bit_depth_luma_minus8 != 2)273			/* Only 8-bit and 10-bit are supported */274			return -EINVAL;275	} else if (ctrl->id == V4L2_CID_STATELESS_VP9_FRAME) {276		const struct v4l2_ctrl_vp9_frame *dec_params = ctrl->p_new.p_vp9_frame;277 278		/* We only support profile 0 */279		if (dec_params->profile != 0)280			return -EINVAL;281	} else if (ctrl->id == V4L2_CID_STATELESS_AV1_SEQUENCE) {282		const struct v4l2_ctrl_av1_sequence *sequence = ctrl->p_new.p_av1_sequence;283 284		if (sequence->bit_depth != 8 && sequence->bit_depth != 10)285			return -EINVAL;286	}287 288	return 0;289}290 291static int hantro_jpeg_s_ctrl(struct v4l2_ctrl *ctrl)292{293	struct hantro_ctx *ctx;294 295	ctx = container_of(ctrl->handler,296			   struct hantro_ctx, ctrl_handler);297 298	vpu_debug(1, "s_ctrl: id = %d, val = %d\n", ctrl->id, ctrl->val);299 300	switch (ctrl->id) {301	case V4L2_CID_JPEG_COMPRESSION_QUALITY:302		ctx->jpeg_quality = ctrl->val;303		break;304	default:305		return -EINVAL;306	}307 308	return 0;309}310 311static int hantro_vp9_s_ctrl(struct v4l2_ctrl *ctrl)312{313	struct hantro_ctx *ctx;314 315	ctx = container_of(ctrl->handler,316			   struct hantro_ctx, ctrl_handler);317 318	switch (ctrl->id) {319	case V4L2_CID_STATELESS_VP9_FRAME: {320		int bit_depth = ctrl->p_new.p_vp9_frame->bit_depth;321 322		if (ctx->bit_depth == bit_depth)323			return 0;324 325		return hantro_reset_raw_fmt(ctx, bit_depth, HANTRO_AUTO_POSTPROC);326	}327	default:328		return -EINVAL;329	}330 331	return 0;332}333 334static int hantro_hevc_s_ctrl(struct v4l2_ctrl *ctrl)335{336	struct hantro_ctx *ctx;337 338	ctx = container_of(ctrl->handler,339			   struct hantro_ctx, ctrl_handler);340 341	switch (ctrl->id) {342	case V4L2_CID_STATELESS_HEVC_SPS: {343		const struct v4l2_ctrl_hevc_sps *sps = ctrl->p_new.p_hevc_sps;344		int bit_depth = sps->bit_depth_luma_minus8 + 8;345 346		if (ctx->bit_depth == bit_depth)347			return 0;348 349		return hantro_reset_raw_fmt(ctx, bit_depth, HANTRO_AUTO_POSTPROC);350	}351	default:352		return -EINVAL;353	}354 355	return 0;356}357 358static int hantro_av1_s_ctrl(struct v4l2_ctrl *ctrl)359{360	struct hantro_ctx *ctx;361 362	ctx = container_of(ctrl->handler,363			   struct hantro_ctx, ctrl_handler);364 365	switch (ctrl->id) {366	case V4L2_CID_STATELESS_AV1_SEQUENCE:367	{368		int bit_depth = ctrl->p_new.p_av1_sequence->bit_depth;369		bool need_postproc = HANTRO_AUTO_POSTPROC;370 371		if (ctrl->p_new.p_av1_sequence->flags372		    & V4L2_AV1_SEQUENCE_FLAG_FILM_GRAIN_PARAMS_PRESENT)373			need_postproc = HANTRO_FORCE_POSTPROC;374 375		if (ctx->bit_depth == bit_depth &&376		    ctx->need_postproc == need_postproc)377			return 0;378 379		return hantro_reset_raw_fmt(ctx, bit_depth, need_postproc);380	}381	default:382		return -EINVAL;383	}384 385	return 0;386}387 388static const struct v4l2_ctrl_ops hantro_ctrl_ops = {389	.try_ctrl = hantro_try_ctrl,390};391 392static const struct v4l2_ctrl_ops hantro_jpeg_ctrl_ops = {393	.s_ctrl = hantro_jpeg_s_ctrl,394};395 396static const struct v4l2_ctrl_ops hantro_vp9_ctrl_ops = {397	.s_ctrl = hantro_vp9_s_ctrl,398};399 400static const struct v4l2_ctrl_ops hantro_hevc_ctrl_ops = {401	.try_ctrl = hantro_try_ctrl,402	.s_ctrl = hantro_hevc_s_ctrl,403};404 405static const struct v4l2_ctrl_ops hantro_av1_ctrl_ops = {406	.try_ctrl = hantro_try_ctrl,407	.s_ctrl = hantro_av1_s_ctrl,408};409 410#define HANTRO_JPEG_ACTIVE_MARKERS	(V4L2_JPEG_ACTIVE_MARKER_APP0 | \411					 V4L2_JPEG_ACTIVE_MARKER_COM | \412					 V4L2_JPEG_ACTIVE_MARKER_DQT | \413					 V4L2_JPEG_ACTIVE_MARKER_DHT)414 415static const struct hantro_ctrl controls[] = {416	{417		.codec = HANTRO_JPEG_ENCODER,418		.cfg = {419			.id = V4L2_CID_JPEG_COMPRESSION_QUALITY,420			.min = 5,421			.max = 100,422			.step = 1,423			.def = 50,424			.ops = &hantro_jpeg_ctrl_ops,425		},426	}, {427		.codec = HANTRO_JPEG_ENCODER,428		.cfg = {429			.id = V4L2_CID_JPEG_ACTIVE_MARKER,430			.max = HANTRO_JPEG_ACTIVE_MARKERS,431			.def = HANTRO_JPEG_ACTIVE_MARKERS,432			/*433			 * Changing the set of active markers/segments also434			 * messes up the alignment of the JPEG header, which435			 * is needed to allow the hardware to write directly436			 * to the output buffer. Implementing this introduces437			 * a lot of complexity for little gain, as the markers438			 * enabled is already the minimum required set.439			 */440			.flags = V4L2_CTRL_FLAG_READ_ONLY,441		},442	}, {443		.codec = HANTRO_MPEG2_DECODER,444		.cfg = {445			.id = V4L2_CID_STATELESS_MPEG2_SEQUENCE,446		},447	}, {448		.codec = HANTRO_MPEG2_DECODER,449		.cfg = {450			.id = V4L2_CID_STATELESS_MPEG2_PICTURE,451		},452	}, {453		.codec = HANTRO_MPEG2_DECODER,454		.cfg = {455			.id = V4L2_CID_STATELESS_MPEG2_QUANTISATION,456		},457	}, {458		.codec = HANTRO_VP8_DECODER,459		.cfg = {460			.id = V4L2_CID_STATELESS_VP8_FRAME,461		},462	}, {463		.codec = HANTRO_H264_DECODER,464		.cfg = {465			.id = V4L2_CID_STATELESS_H264_DECODE_PARAMS,466		},467	}, {468		.codec = HANTRO_H264_DECODER,469		.cfg = {470			.id = V4L2_CID_STATELESS_H264_SPS,471			.ops = &hantro_ctrl_ops,472		},473	}, {474		.codec = HANTRO_H264_DECODER,475		.cfg = {476			.id = V4L2_CID_STATELESS_H264_PPS,477		},478	}, {479		.codec = HANTRO_H264_DECODER,480		.cfg = {481			.id = V4L2_CID_STATELESS_H264_SCALING_MATRIX,482		},483	}, {484		.codec = HANTRO_H264_DECODER,485		.cfg = {486			.id = V4L2_CID_STATELESS_H264_DECODE_MODE,487			.min = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,488			.def = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,489			.max = V4L2_STATELESS_H264_DECODE_MODE_FRAME_BASED,490		},491	}, {492		.codec = HANTRO_H264_DECODER,493		.cfg = {494			.id = V4L2_CID_STATELESS_H264_START_CODE,495			.min = V4L2_STATELESS_H264_START_CODE_ANNEX_B,496			.def = V4L2_STATELESS_H264_START_CODE_ANNEX_B,497			.max = V4L2_STATELESS_H264_START_CODE_ANNEX_B,498		},499	}, {500		.codec = HANTRO_H264_DECODER,501		.cfg = {502			.id = V4L2_CID_MPEG_VIDEO_H264_PROFILE,503			.min = V4L2_MPEG_VIDEO_H264_PROFILE_BASELINE,504			.max = V4L2_MPEG_VIDEO_H264_PROFILE_HIGH,505			.menu_skip_mask =506			BIT(V4L2_MPEG_VIDEO_H264_PROFILE_EXTENDED),507			.def = V4L2_MPEG_VIDEO_H264_PROFILE_MAIN,508		}509	}, {510		.codec = HANTRO_HEVC_DECODER,511		.cfg = {512			.id = V4L2_CID_STATELESS_HEVC_DECODE_MODE,513			.min = V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED,514			.max = V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED,515			.def = V4L2_STATELESS_HEVC_DECODE_MODE_FRAME_BASED,516		},517	}, {518		.codec = HANTRO_HEVC_DECODER,519		.cfg = {520			.id = V4L2_CID_STATELESS_HEVC_START_CODE,521			.min = V4L2_STATELESS_HEVC_START_CODE_ANNEX_B,522			.max = V4L2_STATELESS_HEVC_START_CODE_ANNEX_B,523			.def = V4L2_STATELESS_HEVC_START_CODE_ANNEX_B,524		},525	}, {526		.codec = HANTRO_HEVC_DECODER,527		.cfg = {528			.id = V4L2_CID_MPEG_VIDEO_HEVC_PROFILE,529			.min = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN,530			.max = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN_10,531			.def = V4L2_MPEG_VIDEO_HEVC_PROFILE_MAIN,532		},533	}, {534		.codec = HANTRO_HEVC_DECODER,535		.cfg = {536			.id = V4L2_CID_MPEG_VIDEO_HEVC_LEVEL,537			.min = V4L2_MPEG_VIDEO_HEVC_LEVEL_1,538			.max = V4L2_MPEG_VIDEO_HEVC_LEVEL_5_1,539		},540	}, {541		.codec = HANTRO_HEVC_DECODER,542		.cfg = {543			.id = V4L2_CID_STATELESS_HEVC_SPS,544			.ops = &hantro_hevc_ctrl_ops,545		},546	}, {547		.codec = HANTRO_HEVC_DECODER,548		.cfg = {549			.id = V4L2_CID_STATELESS_HEVC_PPS,550		},551	}, {552		.codec = HANTRO_HEVC_DECODER,553		.cfg = {554			.id = V4L2_CID_STATELESS_HEVC_DECODE_PARAMS,555		},556	}, {557		.codec = HANTRO_HEVC_DECODER,558		.cfg = {559			.id = V4L2_CID_STATELESS_HEVC_SCALING_MATRIX,560		},561	}, {562		.codec = HANTRO_VP9_DECODER,563		.cfg = {564			.id = V4L2_CID_STATELESS_VP9_FRAME,565			.ops = &hantro_vp9_ctrl_ops,566		},567	}, {568		.codec = HANTRO_VP9_DECODER,569		.cfg = {570			.id = V4L2_CID_STATELESS_VP9_COMPRESSED_HDR,571		},572	}, {573		.codec = HANTRO_AV1_DECODER,574		.cfg = {575			.id = V4L2_CID_STATELESS_AV1_FRAME,576		},577	}, {578		.codec = HANTRO_AV1_DECODER,579		.cfg = {580			.id = V4L2_CID_STATELESS_AV1_TILE_GROUP_ENTRY,581			.dims = { V4L2_AV1_MAX_TILE_COUNT },582		},583	}, {584		.codec = HANTRO_AV1_DECODER,585		.cfg = {586			.id = V4L2_CID_STATELESS_AV1_SEQUENCE,587			.ops = &hantro_av1_ctrl_ops,588		},589	}, {590		.codec = HANTRO_AV1_DECODER,591		.cfg = {592			.id = V4L2_CID_STATELESS_AV1_FILM_GRAIN,593		},594	},595};596 597static int hantro_ctrls_setup(struct hantro_dev *vpu,598			      struct hantro_ctx *ctx,599			      int allowed_codecs)600{601	int i, num_ctrls = ARRAY_SIZE(controls);602 603	v4l2_ctrl_handler_init(&ctx->ctrl_handler, num_ctrls);604 605	for (i = 0; i < num_ctrls; i++) {606		if (!(allowed_codecs & controls[i].codec))607			continue;608 609		v4l2_ctrl_new_custom(&ctx->ctrl_handler,610				     &controls[i].cfg, NULL);611		if (ctx->ctrl_handler.error) {612			vpu_err("Adding control (%d) failed %d\n",613				controls[i].cfg.id,614				ctx->ctrl_handler.error);615			v4l2_ctrl_handler_free(&ctx->ctrl_handler);616			return ctx->ctrl_handler.error;617		}618	}619	return v4l2_ctrl_handler_setup(&ctx->ctrl_handler);620}621 622/*623 * V4L2 file operations.624 */625 626static int hantro_open(struct file *filp)627{628	struct hantro_dev *vpu = video_drvdata(filp);629	struct video_device *vdev = video_devdata(filp);630	struct hantro_func *func = hantro_vdev_to_func(vdev);631	struct hantro_ctx *ctx;632	int allowed_codecs, ret;633 634	/*635	 * We do not need any extra locking here, because we operate only636	 * on local data here, except reading few fields from dev, which637	 * do not change through device's lifetime (which is guaranteed by638	 * reference on module from open()) and V4L2 internal objects (such639	 * as vdev and ctx->fh), which have proper locking done in respective640	 * helper functions used here.641	 */642 643	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);644	if (!ctx)645		return -ENOMEM;646 647	ctx->dev = vpu;648	if (func->id == MEDIA_ENT_F_PROC_VIDEO_ENCODER) {649		allowed_codecs = vpu->variant->codec & HANTRO_ENCODERS;650		ctx->is_encoder = true;651	} else if (func->id == MEDIA_ENT_F_PROC_VIDEO_DECODER) {652		allowed_codecs = vpu->variant->codec & HANTRO_DECODERS;653		ctx->is_encoder = false;654	} else {655		ret = -ENODEV;656		goto err_ctx_free;657	}658 659	ctx->fh.m2m_ctx = v4l2_m2m_ctx_init(vpu->m2m_dev, ctx, queue_init);660	if (IS_ERR(ctx->fh.m2m_ctx)) {661		ret = PTR_ERR(ctx->fh.m2m_ctx);662		goto err_ctx_free;663	}664 665	v4l2_fh_init(&ctx->fh, vdev);666	filp->private_data = &ctx->fh;667	v4l2_fh_add(&ctx->fh);668 669	hantro_reset_fmts(ctx);670 671	ret = hantro_ctrls_setup(vpu, ctx, allowed_codecs);672	if (ret) {673		vpu_err("Failed to set up controls\n");674		goto err_fh_free;675	}676	ctx->fh.ctrl_handler = &ctx->ctrl_handler;677 678	return 0;679 680err_fh_free:681	v4l2_fh_del(&ctx->fh);682	v4l2_fh_exit(&ctx->fh);683err_ctx_free:684	kfree(ctx);685	return ret;686}687 688static int hantro_release(struct file *filp)689{690	struct hantro_ctx *ctx =691		container_of(filp->private_data, struct hantro_ctx, fh);692 693	/*694	 * No need for extra locking because this was the last reference695	 * to this file.696	 */697	v4l2_m2m_ctx_release(ctx->fh.m2m_ctx);698	v4l2_fh_del(&ctx->fh);699	v4l2_fh_exit(&ctx->fh);700	v4l2_ctrl_handler_free(&ctx->ctrl_handler);701	kfree(ctx);702 703	return 0;704}705 706static const struct v4l2_file_operations hantro_fops = {707	.owner = THIS_MODULE,708	.open = hantro_open,709	.release = hantro_release,710	.poll = v4l2_m2m_fop_poll,711	.unlocked_ioctl = video_ioctl2,712	.mmap = v4l2_m2m_fop_mmap,713};714 715static const struct of_device_id of_hantro_match[] = {716#ifdef CONFIG_VIDEO_HANTRO_ROCKCHIP717	{ .compatible = "rockchip,px30-vpu",   .data = &px30_vpu_variant, },718	{ .compatible = "rockchip,rk3036-vpu", .data = &rk3036_vpu_variant, },719	{ .compatible = "rockchip,rk3066-vpu", .data = &rk3066_vpu_variant, },720	{ .compatible = "rockchip,rk3288-vpu", .data = &rk3288_vpu_variant, },721	{ .compatible = "rockchip,rk3328-vpu", .data = &rk3328_vpu_variant, },722	{ .compatible = "rockchip,rk3399-vpu", .data = &rk3399_vpu_variant, },723	{ .compatible = "rockchip,rk3568-vepu", .data = &rk3568_vepu_variant, },724	{ .compatible = "rockchip,rk3568-vpu", .data = &rk3568_vpu_variant, },725	{ .compatible = "rockchip,rk3588-vepu121", .data = &rk3568_vepu_variant, },726	{ .compatible = "rockchip,rk3588-av1-vpu", .data = &rk3588_vpu981_variant, },727#endif728#ifdef CONFIG_VIDEO_HANTRO_IMX8M729	{ .compatible = "nxp,imx8mm-vpu-g1", .data = &imx8mm_vpu_g1_variant, },730	{ .compatible = "nxp,imx8mq-vpu", .data = &imx8mq_vpu_variant, },731	{ .compatible = "nxp,imx8mq-vpu-g1", .data = &imx8mq_vpu_g1_variant },732	{ .compatible = "nxp,imx8mq-vpu-g2", .data = &imx8mq_vpu_g2_variant },733#endif734#ifdef CONFIG_VIDEO_HANTRO_SAMA5D4735	{ .compatible = "microchip,sama5d4-vdec", .data = &sama5d4_vdec_variant, },736#endif737#ifdef CONFIG_VIDEO_HANTRO_SUNXI738	{ .compatible = "allwinner,sun50i-h6-vpu-g2", .data = &sunxi_vpu_variant, },739#endif740#ifdef CONFIG_VIDEO_HANTRO_STM32MP25741	{ .compatible = "st,stm32mp25-vdec", .data = &stm32mp25_vdec_variant, },742	{ .compatible = "st,stm32mp25-venc", .data = &stm32mp25_venc_variant, },743#endif744	{ /* sentinel */ }745};746MODULE_DEVICE_TABLE(of, of_hantro_match);747 748static int hantro_register_entity(struct media_device *mdev,749				  struct media_entity *entity,750				  const char *entity_name,751				  struct media_pad *pads, int num_pads,752				  int function, struct video_device *vdev)753{754	char *name;755	int ret;756 757	entity->obj_type = MEDIA_ENTITY_TYPE_BASE;758	if (function == MEDIA_ENT_F_IO_V4L) {759		entity->info.dev.major = VIDEO_MAJOR;760		entity->info.dev.minor = vdev->minor;761	}762 763	name = devm_kasprintf(mdev->dev, GFP_KERNEL, "%s-%s", vdev->name,764			      entity_name);765	if (!name)766		return -ENOMEM;767 768	entity->name = name;769	entity->function = function;770 771	ret = media_entity_pads_init(entity, num_pads, pads);772	if (ret)773		return ret;774 775	ret = media_device_register_entity(mdev, entity);776	if (ret)777		return ret;778 779	return 0;780}781 782static int hantro_attach_func(struct hantro_dev *vpu,783			      struct hantro_func *func)784{785	struct media_device *mdev = &vpu->mdev;786	struct media_link *link;787	int ret;788 789	/* Create the three encoder entities with their pads */790	func->source_pad.flags = MEDIA_PAD_FL_SOURCE;791	ret = hantro_register_entity(mdev, &func->vdev.entity, "source",792				     &func->source_pad, 1, MEDIA_ENT_F_IO_V4L,793				     &func->vdev);794	if (ret)795		return ret;796 797	func->proc_pads[0].flags = MEDIA_PAD_FL_SINK;798	func->proc_pads[1].flags = MEDIA_PAD_FL_SOURCE;799	ret = hantro_register_entity(mdev, &func->proc, "proc",800				     func->proc_pads, 2, func->id,801				     &func->vdev);802	if (ret)803		goto err_rel_entity0;804 805	func->sink_pad.flags = MEDIA_PAD_FL_SINK;806	ret = hantro_register_entity(mdev, &func->sink, "sink",807				     &func->sink_pad, 1, MEDIA_ENT_F_IO_V4L,808				     &func->vdev);809	if (ret)810		goto err_rel_entity1;811 812	/* Connect the three entities */813	ret = media_create_pad_link(&func->vdev.entity, 0, &func->proc, 0,814				    MEDIA_LNK_FL_IMMUTABLE |815				    MEDIA_LNK_FL_ENABLED);816	if (ret)817		goto err_rel_entity2;818 819	ret = media_create_pad_link(&func->proc, 1, &func->sink, 0,820				    MEDIA_LNK_FL_IMMUTABLE |821				    MEDIA_LNK_FL_ENABLED);822	if (ret)823		goto err_rm_links0;824 825	/* Create video interface */826	func->intf_devnode = media_devnode_create(mdev, MEDIA_INTF_T_V4L_VIDEO,827						  0, VIDEO_MAJOR,828						  func->vdev.minor);829	if (!func->intf_devnode) {830		ret = -ENOMEM;831		goto err_rm_links1;832	}833 834	/* Connect the two DMA engines to the interface */835	link = media_create_intf_link(&func->vdev.entity,836				      &func->intf_devnode->intf,837				      MEDIA_LNK_FL_IMMUTABLE |838				      MEDIA_LNK_FL_ENABLED);839	if (!link) {840		ret = -ENOMEM;841		goto err_rm_devnode;842	}843 844	link = media_create_intf_link(&func->sink, &func->intf_devnode->intf,845				      MEDIA_LNK_FL_IMMUTABLE |846				      MEDIA_LNK_FL_ENABLED);847	if (!link) {848		ret = -ENOMEM;849		goto err_rm_devnode;850	}851	return 0;852 853err_rm_devnode:854	media_devnode_remove(func->intf_devnode);855 856err_rm_links1:857	media_entity_remove_links(&func->sink);858 859err_rm_links0:860	media_entity_remove_links(&func->proc);861	media_entity_remove_links(&func->vdev.entity);862 863err_rel_entity2:864	media_device_unregister_entity(&func->sink);865 866err_rel_entity1:867	media_device_unregister_entity(&func->proc);868 869err_rel_entity0:870	media_device_unregister_entity(&func->vdev.entity);871	return ret;872}873 874static void hantro_detach_func(struct hantro_func *func)875{876	media_devnode_remove(func->intf_devnode);877	media_entity_remove_links(&func->sink);878	media_entity_remove_links(&func->proc);879	media_entity_remove_links(&func->vdev.entity);880	media_device_unregister_entity(&func->sink);881	media_device_unregister_entity(&func->proc);882	media_device_unregister_entity(&func->vdev.entity);883}884 885static int hantro_add_func(struct hantro_dev *vpu, unsigned int funcid)886{887	const struct of_device_id *match;888	struct hantro_func *func;889	struct video_device *vfd;890	int ret;891 892	match = of_match_node(of_hantro_match, vpu->dev->of_node);893	func = devm_kzalloc(vpu->dev, sizeof(*func), GFP_KERNEL);894	if (!func) {895		v4l2_err(&vpu->v4l2_dev, "Failed to allocate video device\n");896		return -ENOMEM;897	}898 899	func->id = funcid;900 901	vfd = &func->vdev;902	vfd->fops = &hantro_fops;903	vfd->release = video_device_release_empty;904	vfd->lock = &vpu->vpu_mutex;905	vfd->v4l2_dev = &vpu->v4l2_dev;906	vfd->vfl_dir = VFL_DIR_M2M;907	vfd->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_M2M_MPLANE;908	vfd->ioctl_ops = &hantro_ioctl_ops;909	strscpy(vfd->name, match->compatible, sizeof(vfd->name));910	strlcat(vfd->name, funcid == MEDIA_ENT_F_PROC_VIDEO_ENCODER ?911		"-enc" : "-dec", sizeof(vfd->name));912 913	if (funcid == MEDIA_ENT_F_PROC_VIDEO_ENCODER) {914		vpu->encoder = func;915		v4l2_disable_ioctl(vfd, VIDIOC_TRY_DECODER_CMD);916		v4l2_disable_ioctl(vfd, VIDIOC_DECODER_CMD);917	} else {918		vpu->decoder = func;919		v4l2_disable_ioctl(vfd, VIDIOC_TRY_ENCODER_CMD);920		v4l2_disable_ioctl(vfd, VIDIOC_ENCODER_CMD);921	}922 923	video_set_drvdata(vfd, vpu);924 925	ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);926	if (ret) {927		v4l2_err(&vpu->v4l2_dev, "Failed to register video device\n");928		return ret;929	}930 931	ret = hantro_attach_func(vpu, func);932	if (ret) {933		v4l2_err(&vpu->v4l2_dev,934			 "Failed to attach functionality to the media device\n");935		goto err_unreg_dev;936	}937 938	v4l2_info(&vpu->v4l2_dev, "registered %s as /dev/video%d\n", vfd->name,939		  vfd->num);940 941	return 0;942 943err_unreg_dev:944	video_unregister_device(vfd);945	return ret;946}947 948static int hantro_add_enc_func(struct hantro_dev *vpu)949{950	if (!vpu->variant->enc_fmts)951		return 0;952 953	return hantro_add_func(vpu, MEDIA_ENT_F_PROC_VIDEO_ENCODER);954}955 956static int hantro_add_dec_func(struct hantro_dev *vpu)957{958	if (!vpu->variant->dec_fmts)959		return 0;960 961	return hantro_add_func(vpu, MEDIA_ENT_F_PROC_VIDEO_DECODER);962}963 964static void hantro_remove_func(struct hantro_dev *vpu,965			       unsigned int funcid)966{967	struct hantro_func *func;968 969	if (funcid == MEDIA_ENT_F_PROC_VIDEO_ENCODER)970		func = vpu->encoder;971	else972		func = vpu->decoder;973 974	if (!func)975		return;976 977	hantro_detach_func(func);978	video_unregister_device(&func->vdev);979}980 981static void hantro_remove_enc_func(struct hantro_dev *vpu)982{983	hantro_remove_func(vpu, MEDIA_ENT_F_PROC_VIDEO_ENCODER);984}985 986static void hantro_remove_dec_func(struct hantro_dev *vpu)987{988	hantro_remove_func(vpu, MEDIA_ENT_F_PROC_VIDEO_DECODER);989}990 991static const struct media_device_ops hantro_m2m_media_ops = {992	.req_validate = vb2_request_validate,993	.req_queue = v4l2_m2m_request_queue,994};995 996/*997 * Some SoCs, like RK3588 have multiple identical Hantro cores, but the998 * kernel is currently missing support for multi-core handling. Exposing999 * separate devices for each core to userspace is bad, since that does1000 * not allow scheduling tasks properly (and creates ABI). With this workaround1001 * the driver will only probe for the first core and early exit for the other1002 * cores. Once the driver gains multi-core support, the same technique1003 * for detecting the main core can be used to cluster all cores together.1004 */1005static int hantro_disable_multicore(struct hantro_dev *vpu)1006{1007	struct device_node *node = NULL;1008	const char *compatible;1009	bool is_main_core;1010	int ret;1011 1012	/* Intentionally ignores the fallback strings */1013	ret = of_property_read_string(vpu->dev->of_node, "compatible", &compatible);1014	if (ret)1015		return ret;1016 1017	/* The first compatible and available node found is considered the main core */1018	do {1019		node = of_find_compatible_node(node, NULL, compatible);1020		if (of_device_is_available(node))1021			break;1022	} while (node);1023 1024	if (!node)1025		return -EINVAL;1026 1027	is_main_core = (vpu->dev->of_node == node);1028 1029	of_node_put(node);1030 1031	if (!is_main_core) {1032		dev_info(vpu->dev, "missing multi-core support, ignoring this instance\n");1033		return -ENODEV;1034	}1035 1036	return 0;1037}1038 1039static int hantro_probe(struct platform_device *pdev)1040{1041	const struct of_device_id *match;1042	struct hantro_dev *vpu;1043	int num_bases;1044	int i, ret;1045 1046	vpu = devm_kzalloc(&pdev->dev, sizeof(*vpu), GFP_KERNEL);1047	if (!vpu)1048		return -ENOMEM;1049 1050	vpu->dev = &pdev->dev;1051	vpu->pdev = pdev;1052	mutex_init(&vpu->vpu_mutex);1053	spin_lock_init(&vpu->irqlock);1054 1055	match = of_match_node(of_hantro_match, pdev->dev.of_node);1056	vpu->variant = match->data;1057 1058	ret = hantro_disable_multicore(vpu);1059	if (ret)1060		return ret;1061 1062	/*1063	 * Support for nxp,imx8mq-vpu is kept for backwards compatibility1064	 * but it's deprecated. Please update your DTS file to use1065	 * nxp,imx8mq-vpu-g1 or nxp,imx8mq-vpu-g2 instead.1066	 */1067	if (of_device_is_compatible(pdev->dev.of_node, "nxp,imx8mq-vpu"))1068		dev_warn(&pdev->dev, "%s compatible is deprecated\n",1069			 match->compatible);1070 1071	INIT_DELAYED_WORK(&vpu->watchdog_work, hantro_watchdog);1072 1073	vpu->clocks = devm_kcalloc(&pdev->dev, vpu->variant->num_clocks,1074				   sizeof(*vpu->clocks), GFP_KERNEL);1075	if (!vpu->clocks)1076		return -ENOMEM;1077 1078	if (vpu->variant->num_clocks > 1) {1079		for (i = 0; i < vpu->variant->num_clocks; i++)1080			vpu->clocks[i].id = vpu->variant->clk_names[i];1081 1082		ret = devm_clk_bulk_get(&pdev->dev, vpu->variant->num_clocks,1083					vpu->clocks);1084		if (ret)1085			return ret;1086	} else {1087		/*1088		 * If the driver has a single clk, chances are there will be no1089		 * actual name in the DT bindings.1090		 */1091		vpu->clocks[0].clk = devm_clk_get(&pdev->dev, NULL);1092		if (IS_ERR(vpu->clocks[0].clk))1093			return PTR_ERR(vpu->clocks[0].clk);1094	}1095 1096	vpu->resets = devm_reset_control_array_get_optional_exclusive(&pdev->dev);1097	if (IS_ERR(vpu->resets))1098		return PTR_ERR(vpu->resets);1099 1100	num_bases = vpu->variant->num_regs ?: 1;1101	vpu->reg_bases = devm_kcalloc(&pdev->dev, num_bases,1102				      sizeof(*vpu->reg_bases), GFP_KERNEL);1103	if (!vpu->reg_bases)1104		return -ENOMEM;1105 1106	for (i = 0; i < num_bases; i++) {1107		vpu->reg_bases[i] = vpu->variant->reg_names ?1108		      devm_platform_ioremap_resource_byname(pdev, vpu->variant->reg_names[i]) :1109		      devm_platform_ioremap_resource(pdev, 0);1110		if (IS_ERR(vpu->reg_bases[i]))1111			return PTR_ERR(vpu->reg_bases[i]);1112	}1113	vpu->enc_base = vpu->reg_bases[0] + vpu->variant->enc_offset;1114	vpu->dec_base = vpu->reg_bases[0] + vpu->variant->dec_offset;1115 1116	/**1117	 * TODO: Eventually allow taking advantage of full 64-bit address space.1118	 * Until then we assume the MSB portion of buffers' base addresses is1119	 * always 0 due to this masking operation.1120	 */1121	ret = dma_set_coherent_mask(vpu->dev, DMA_BIT_MASK(32));1122	if (ret) {1123		dev_err(vpu->dev, "Could not set DMA coherent mask.\n");1124		return ret;1125	}1126	vb2_dma_contig_set_max_seg_size(&pdev->dev, DMA_BIT_MASK(32));1127 1128	for (i = 0; i < vpu->variant->num_irqs; i++) {1129		const char *irq_name;1130		int irq;1131 1132		if (!vpu->variant->irqs[i].handler)1133			continue;1134 1135		if (vpu->variant->num_irqs > 1) {1136			irq_name = vpu->variant->irqs[i].name;1137			irq = platform_get_irq_byname(vpu->pdev, irq_name);1138		} else {1139			/*1140			 * If the driver has a single IRQ, chances are there1141			 * will be no actual name in the DT bindings.1142			 */1143			irq_name = "default";1144			irq = platform_get_irq(vpu->pdev, 0);1145		}1146		if (irq < 0)1147			return irq;1148 1149		ret = devm_request_irq(vpu->dev, irq,1150				       vpu->variant->irqs[i].handler, 0,1151				       dev_name(vpu->dev), vpu);1152		if (ret) {1153			dev_err(vpu->dev, "Could not request %s IRQ.\n",1154				irq_name);1155			return ret;1156		}1157	}1158 1159	if (vpu->variant->init) {1160		ret = vpu->variant->init(vpu);1161		if (ret) {1162			dev_err(&pdev->dev, "Failed to init VPU hardware\n");1163			return ret;1164		}1165	}1166 1167	pm_runtime_set_autosuspend_delay(vpu->dev, 100);1168	pm_runtime_use_autosuspend(vpu->dev);1169	pm_runtime_enable(vpu->dev);1170 1171	ret = reset_control_deassert(vpu->resets);1172	if (ret) {1173		dev_err(&pdev->dev, "Failed to deassert resets\n");1174		goto err_pm_disable;1175	}1176 1177	ret = clk_bulk_prepare(vpu->variant->num_clocks, vpu->clocks);1178	if (ret) {1179		dev_err(&pdev->dev, "Failed to prepare clocks\n");1180		goto err_rst_assert;1181	}1182 1183	ret = v4l2_device_register(&pdev->dev, &vpu->v4l2_dev);1184	if (ret) {1185		dev_err(&pdev->dev, "Failed to register v4l2 device\n");1186		goto err_clk_unprepare;1187	}1188	platform_set_drvdata(pdev, vpu);1189 1190	vpu->m2m_dev = v4l2_m2m_init(&vpu_m2m_ops);1191	if (IS_ERR(vpu->m2m_dev)) {1192		v4l2_err(&vpu->v4l2_dev, "Failed to init mem2mem device\n");1193		ret = PTR_ERR(vpu->m2m_dev);1194		goto err_v4l2_unreg;1195	}1196 1197	vpu->mdev.dev = vpu->dev;1198	strscpy(vpu->mdev.model, DRIVER_NAME, sizeof(vpu->mdev.model));1199	media_device_init(&vpu->mdev);1200	vpu->mdev.ops = &hantro_m2m_media_ops;1201	vpu->v4l2_dev.mdev = &vpu->mdev;1202 1203	ret = hantro_add_enc_func(vpu);1204	if (ret) {1205		dev_err(&pdev->dev, "Failed to register encoder\n");1206		goto err_m2m_rel;1207	}1208 1209	ret = hantro_add_dec_func(vpu);1210	if (ret) {1211		dev_err(&pdev->dev, "Failed to register decoder\n");1212		goto err_rm_enc_func;1213	}1214 1215	ret = media_device_register(&vpu->mdev);1216	if (ret) {1217		v4l2_err(&vpu->v4l2_dev, "Failed to register mem2mem media device\n");1218		goto err_rm_dec_func;1219	}1220 1221	return 0;1222 1223err_rm_dec_func:1224	hantro_remove_dec_func(vpu);1225err_rm_enc_func:1226	hantro_remove_enc_func(vpu);1227err_m2m_rel:1228	media_device_cleanup(&vpu->mdev);1229	v4l2_m2m_release(vpu->m2m_dev);1230err_v4l2_unreg:1231	v4l2_device_unregister(&vpu->v4l2_dev);1232err_clk_unprepare:1233	clk_bulk_unprepare(vpu->variant->num_clocks, vpu->clocks);1234err_rst_assert:1235	reset_control_assert(vpu->resets);1236err_pm_disable:1237	pm_runtime_dont_use_autosuspend(vpu->dev);1238	pm_runtime_disable(vpu->dev);1239	return ret;1240}1241 1242static void hantro_remove(struct platform_device *pdev)1243{1244	struct hantro_dev *vpu = platform_get_drvdata(pdev);1245 1246	v4l2_info(&vpu->v4l2_dev, "Removing %s\n", pdev->name);1247 1248	media_device_unregister(&vpu->mdev);1249	hantro_remove_dec_func(vpu);1250	hantro_remove_enc_func(vpu);1251	media_device_cleanup(&vpu->mdev);1252	v4l2_m2m_release(vpu->m2m_dev);1253	v4l2_device_unregister(&vpu->v4l2_dev);1254	clk_bulk_unprepare(vpu->variant->num_clocks, vpu->clocks);1255	reset_control_assert(vpu->resets);1256	pm_runtime_dont_use_autosuspend(vpu->dev);1257	pm_runtime_disable(vpu->dev);1258}1259 1260#ifdef CONFIG_PM1261static int hantro_runtime_resume(struct device *dev)1262{1263	struct hantro_dev *vpu = dev_get_drvdata(dev);1264 1265	if (vpu->variant->runtime_resume)1266		return vpu->variant->runtime_resume(vpu);1267 1268	return 0;1269}1270#endif1271 1272static const struct dev_pm_ops hantro_pm_ops = {1273	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,1274				pm_runtime_force_resume)1275	SET_RUNTIME_PM_OPS(NULL, hantro_runtime_resume, NULL)1276};1277 1278static struct platform_driver hantro_driver = {1279	.probe = hantro_probe,1280	.remove_new = hantro_remove,1281	.driver = {1282		   .name = DRIVER_NAME,1283		   .of_match_table = of_hantro_match,1284		   .pm = &hantro_pm_ops,1285	},1286};1287module_platform_driver(hantro_driver);1288 1289MODULE_LICENSE("GPL v2");1290MODULE_AUTHOR("Alpha Lin <Alpha.Lin@Rock-Chips.com>");1291MODULE_AUTHOR("Tomasz Figa <tfiga@chromium.org>");1292MODULE_AUTHOR("Ezequiel Garcia <ezequiel@collabora.com>");1293MODULE_DESCRIPTION("Hantro VPU codec driver");1294