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1// SPDX-License-Identifier: GPL-2.0+2/*3 * vsp1_pipe.c  --  R-Car VSP1 Pipeline4 *5 * Copyright (C) 2013-2015 Renesas Electronics Corporation6 *7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)8 */9 10#include <linux/delay.h>11#include <linux/list.h>12#include <linux/sched.h>13#include <linux/wait.h>14 15#include <media/media-entity.h>16#include <media/v4l2-subdev.h>17 18#include "vsp1.h"19#include "vsp1_brx.h"20#include "vsp1_dl.h"21#include "vsp1_entity.h"22#include "vsp1_hgo.h"23#include "vsp1_hgt.h"24#include "vsp1_pipe.h"25#include "vsp1_rwpf.h"26#include "vsp1_uds.h"27 28/* -----------------------------------------------------------------------------29 * Helper Functions30 */31 32static const struct vsp1_format_info vsp1_video_formats[] = {33	{ V4L2_PIX_FMT_RGB332, MEDIA_BUS_FMT_ARGB8888_1X32,34	  VI6_FMT_RGB_332, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |35	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,36	  1, { 8, 0, 0 }, false, false, 1, 1, false },37	{ V4L2_PIX_FMT_ARGB444, MEDIA_BUS_FMT_ARGB8888_1X32,38	  VI6_FMT_ARGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |39	  VI6_RPF_DSWAP_P_WDS,40	  1, { 16, 0, 0 }, false, false, 1, 1, true },41	{ V4L2_PIX_FMT_XRGB444, MEDIA_BUS_FMT_ARGB8888_1X32,42	  VI6_FMT_XRGB_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |43	  VI6_RPF_DSWAP_P_WDS,44	  1, { 16, 0, 0 }, false, false, 1, 1, false },45	{ V4L2_PIX_FMT_RGBA444, MEDIA_BUS_FMT_ARGB8888_1X32,46	  VI6_FMT_RGBA_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |47	  VI6_RPF_DSWAP_P_WDS,48	  1, { 16, 0, 0 }, false, false, 1, 1, true },49	{ V4L2_PIX_FMT_RGBX444, MEDIA_BUS_FMT_ARGB8888_1X32,50	  VI6_FMT_RGBX_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |51	  VI6_RPF_DSWAP_P_WDS,52	  1, { 16, 0, 0 }, false, false, 1, 1, false },53	{ V4L2_PIX_FMT_ABGR444, MEDIA_BUS_FMT_ARGB8888_1X32,54	  VI6_FMT_ABGR_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |55	  VI6_RPF_DSWAP_P_WDS,56	  1, { 16, 0, 0 }, false, false, 1, 1, true },57	{ V4L2_PIX_FMT_XBGR444, MEDIA_BUS_FMT_ARGB8888_1X32,58	  VI6_FMT_ABGR_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |59	  VI6_RPF_DSWAP_P_WDS,60	  1, { 16, 0, 0 }, false, false, 1, 1, false },61	{ V4L2_PIX_FMT_BGRA444, MEDIA_BUS_FMT_ARGB8888_1X32,62	  VI6_FMT_BGRA_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |63	  VI6_RPF_DSWAP_P_WDS,64	  1, { 16, 0, 0 }, false, false, 1, 1, true },65	{ V4L2_PIX_FMT_BGRX444, MEDIA_BUS_FMT_ARGB8888_1X32,66	  VI6_FMT_BGRA_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |67	  VI6_RPF_DSWAP_P_WDS,68	  1, { 16, 0, 0 }, false, false, 1, 1, false },69	{ V4L2_PIX_FMT_ARGB555, MEDIA_BUS_FMT_ARGB8888_1X32,70	  VI6_FMT_ARGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |71	  VI6_RPF_DSWAP_P_WDS,72	  1, { 16, 0, 0 }, false, false, 1, 1, true },73	{ V4L2_PIX_FMT_XRGB555, MEDIA_BUS_FMT_ARGB8888_1X32,74	  VI6_FMT_XRGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |75	  VI6_RPF_DSWAP_P_WDS,76	  1, { 16, 0, 0 }, false, false, 1, 1, false },77	{ V4L2_PIX_FMT_RGBA555, MEDIA_BUS_FMT_ARGB8888_1X32,78	  VI6_FMT_RGBA_5551, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |79	  VI6_RPF_DSWAP_P_WDS,80	  1, { 16, 0, 0 }, false, false, 1, 1, true },81	{ V4L2_PIX_FMT_RGBX555, MEDIA_BUS_FMT_ARGB8888_1X32,82	  VI6_FMT_RGBX_5551, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |83	  VI6_RPF_DSWAP_P_WDS,84	  1, { 16, 0, 0 }, false, false, 1, 1, false },85	{ V4L2_PIX_FMT_ABGR555, MEDIA_BUS_FMT_ARGB8888_1X32,86	  VI6_FMT_ABGR_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |87	  VI6_RPF_DSWAP_P_WDS,88	  1, { 16, 0, 0 }, false, false, 1, 1, true },89	{ V4L2_PIX_FMT_XBGR555, MEDIA_BUS_FMT_ARGB8888_1X32,90	  VI6_FMT_ABGR_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |91	  VI6_RPF_DSWAP_P_WDS,92	  1, { 16, 0, 0 }, false, false, 1, 1, false },93	{ V4L2_PIX_FMT_BGRA555, MEDIA_BUS_FMT_ARGB8888_1X32,94	  VI6_FMT_BGRA_5551, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |95	  VI6_RPF_DSWAP_P_WDS,96	  1, { 16, 0, 0 }, false, false, 1, 1, true },97	{ V4L2_PIX_FMT_BGRX555, MEDIA_BUS_FMT_ARGB8888_1X32,98	  VI6_FMT_BGRA_5551, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |99	  VI6_RPF_DSWAP_P_WDS,100	  1, { 16, 0, 0 }, false, false, 1, 1, false },101	{ V4L2_PIX_FMT_RGB565, MEDIA_BUS_FMT_ARGB8888_1X32,102	  VI6_FMT_RGB_565, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |103	  VI6_RPF_DSWAP_P_WDS,104	  1, { 16, 0, 0 }, false, false, 1, 1, false },105	{ V4L2_PIX_FMT_BGR24, MEDIA_BUS_FMT_ARGB8888_1X32,106	  VI6_FMT_BGR_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |107	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,108	  1, { 24, 0, 0 }, false, false, 1, 1, false },109	{ V4L2_PIX_FMT_RGB24, MEDIA_BUS_FMT_ARGB8888_1X32,110	  VI6_FMT_RGB_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |111	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,112	  1, { 24, 0, 0 }, false, false, 1, 1, false },113	{ V4L2_PIX_FMT_ABGR32, MEDIA_BUS_FMT_ARGB8888_1X32,114	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,115	  1, { 32, 0, 0 }, false, false, 1, 1, true },116	{ V4L2_PIX_FMT_XBGR32, MEDIA_BUS_FMT_ARGB8888_1X32,117	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,118	  1, { 32, 0, 0 }, false, false, 1, 1, false },119	{ V4L2_PIX_FMT_BGRA32, MEDIA_BUS_FMT_ARGB8888_1X32,120	  VI6_FMT_RGBA_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,121	  1, { 32, 0, 0 }, false, false, 1, 1, true },122	{ V4L2_PIX_FMT_BGRX32, MEDIA_BUS_FMT_ARGB8888_1X32,123	  VI6_FMT_RGBA_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,124	  1, { 32, 0, 0 }, false, false, 1, 1, false },125	{ V4L2_PIX_FMT_RGBA32, MEDIA_BUS_FMT_ARGB8888_1X32,126	  VI6_FMT_RGBA_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |127	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,128	  1, { 32, 0, 0 }, false, false, 1, 1, true },129	{ V4L2_PIX_FMT_RGBX32, MEDIA_BUS_FMT_ARGB8888_1X32,130	  VI6_FMT_RGBA_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |131	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,132	  1, { 32, 0, 0 }, false, false, 1, 1, false },133	{ V4L2_PIX_FMT_ARGB32, MEDIA_BUS_FMT_ARGB8888_1X32,134	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |135	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,136	  1, { 32, 0, 0 }, false, false, 1, 1, true },137	{ V4L2_PIX_FMT_XRGB32, MEDIA_BUS_FMT_ARGB8888_1X32,138	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |139	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,140	  1, { 32, 0, 0 }, false, false, 1, 1, false },141	{ V4L2_PIX_FMT_HSV24, MEDIA_BUS_FMT_AHSV8888_1X32,142	  VI6_FMT_RGB_888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |143	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,144	  1, { 24, 0, 0 }, false, false, 1, 1, false },145	{ V4L2_PIX_FMT_HSV32, MEDIA_BUS_FMT_AHSV8888_1X32,146	  VI6_FMT_ARGB_8888, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |147	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,148	  1, { 32, 0, 0 }, false, false, 1, 1, false },149	{ V4L2_PIX_FMT_RGBX1010102, MEDIA_BUS_FMT_ARGB8888_1X32,150	  VI6_FMT_RGB10_RGB10A2_A2RGB10,151	  VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,152	  1, { 32, 0, 0 }, false, false, 1, 1, false },153	{ V4L2_PIX_FMT_RGBA1010102, MEDIA_BUS_FMT_ARGB8888_1X32,154	  VI6_FMT_RGB10_RGB10A2_A2RGB10,155	  VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,156	  1, { 32, 0, 0 }, false, false, 1, 1, false },157	{ V4L2_PIX_FMT_ARGB2101010, MEDIA_BUS_FMT_ARGB8888_1X32,158	  VI6_FMT_RGB10_RGB10A2_A2RGB10,159	  VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,160	  1, { 32, 0, 0 }, false, false, 1, 1, false },161	{ V4L2_PIX_FMT_UYVY, MEDIA_BUS_FMT_AYUV8_1X32,162	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |163	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,164	  1, { 16, 0, 0 }, false, false, 2, 1, false },165	{ V4L2_PIX_FMT_VYUY, MEDIA_BUS_FMT_AYUV8_1X32,166	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |167	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,168	  1, { 16, 0, 0 }, false, true, 2, 1, false },169	{ V4L2_PIX_FMT_YUYV, MEDIA_BUS_FMT_AYUV8_1X32,170	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |171	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,172	  1, { 16, 0, 0 }, true, false, 2, 1, false },173	{ V4L2_PIX_FMT_YVYU, MEDIA_BUS_FMT_AYUV8_1X32,174	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |175	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,176	  1, { 16, 0, 0 }, true, true, 2, 1, false },177	{ V4L2_PIX_FMT_NV12M, MEDIA_BUS_FMT_AYUV8_1X32,178	  VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |179	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,180	  2, { 8, 16, 0 }, false, false, 2, 2, false },181	{ V4L2_PIX_FMT_NV21M, MEDIA_BUS_FMT_AYUV8_1X32,182	  VI6_FMT_Y_UV_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |183	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,184	  2, { 8, 16, 0 }, false, true, 2, 2, false },185	{ V4L2_PIX_FMT_NV16M, MEDIA_BUS_FMT_AYUV8_1X32,186	  VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |187	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,188	  2, { 8, 16, 0 }, false, false, 2, 1, false },189	{ V4L2_PIX_FMT_NV61M, MEDIA_BUS_FMT_AYUV8_1X32,190	  VI6_FMT_Y_UV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |191	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,192	  2, { 8, 16, 0 }, false, true, 2, 1, false },193	{ V4L2_PIX_FMT_YUV420M, MEDIA_BUS_FMT_AYUV8_1X32,194	  VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |195	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,196	  3, { 8, 8, 8 }, false, false, 2, 2, false },197	{ V4L2_PIX_FMT_YVU420M, MEDIA_BUS_FMT_AYUV8_1X32,198	  VI6_FMT_Y_U_V_420, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |199	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,200	  3, { 8, 8, 8 }, false, true, 2, 2, false },201	{ V4L2_PIX_FMT_YUV422M, MEDIA_BUS_FMT_AYUV8_1X32,202	  VI6_FMT_Y_U_V_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |203	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,204	  3, { 8, 8, 8 }, false, false, 2, 1, false },205	{ V4L2_PIX_FMT_YVU422M, MEDIA_BUS_FMT_AYUV8_1X32,206	  VI6_FMT_Y_U_V_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |207	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,208	  3, { 8, 8, 8 }, false, true, 2, 1, false },209	{ V4L2_PIX_FMT_YUV444M, MEDIA_BUS_FMT_AYUV8_1X32,210	  VI6_FMT_Y_U_V_444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |211	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,212	  3, { 8, 8, 8 }, false, false, 1, 1, false },213	{ V4L2_PIX_FMT_YVU444M, MEDIA_BUS_FMT_AYUV8_1X32,214	  VI6_FMT_Y_U_V_444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |215	  VI6_RPF_DSWAP_P_WDS | VI6_RPF_DSWAP_P_BTS,216	  3, { 8, 8, 8 }, false, true, 1, 1, false },217	{ V4L2_PIX_FMT_Y210, MEDIA_BUS_FMT_AYUV8_1X32,218	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,219	  1, { 32, 0, 0 }, false, false, 2, 1, false },220	{ V4L2_PIX_FMT_Y212, MEDIA_BUS_FMT_AYUV8_1X32,221	  VI6_FMT_YUYV_422, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS,222	  1, { 32, 0, 0 }, false, false, 2, 1, false },223};224 225/**226 * vsp1_get_format_info - Retrieve format information for a 4CC227 * @vsp1: the VSP1 device228 * @fourcc: the format 4CC229 *230 * Return a pointer to the format information structure corresponding to the231 * given V4L2 format 4CC, or NULL if no corresponding format can be found.232 */233const struct vsp1_format_info *vsp1_get_format_info(struct vsp1_device *vsp1,234						    u32 fourcc)235{236	unsigned int i;237 238	/* Special case, the VYUY and HSV formats are supported on Gen2 only. */239	if (vsp1->info->gen != 2) {240		switch (fourcc) {241		case V4L2_PIX_FMT_VYUY:242		case V4L2_PIX_FMT_HSV24:243		case V4L2_PIX_FMT_HSV32:244			return NULL;245		}246	}247 248	for (i = 0; i < ARRAY_SIZE(vsp1_video_formats); ++i) {249		const struct vsp1_format_info *info = &vsp1_video_formats[i];250 251		if (info->fourcc == fourcc)252			return info;253	}254 255	return NULL;256}257 258/* -----------------------------------------------------------------------------259 * Pipeline Management260 */261 262void vsp1_pipeline_reset(struct vsp1_pipeline *pipe)263{264	struct vsp1_entity *entity;265	unsigned int i;266 267	if (pipe->brx) {268		struct vsp1_brx *brx = to_brx(&pipe->brx->subdev);269 270		for (i = 0; i < ARRAY_SIZE(brx->inputs); ++i)271			brx->inputs[i].rpf = NULL;272	}273 274	for (i = 0; i < ARRAY_SIZE(pipe->inputs); ++i)275		pipe->inputs[i] = NULL;276 277	pipe->output = NULL;278 279	list_for_each_entry(entity, &pipe->entities, list_pipe)280		entity->pipe = NULL;281 282	INIT_LIST_HEAD(&pipe->entities);283	pipe->state = VSP1_PIPELINE_STOPPED;284	pipe->buffers_ready = 0;285	pipe->num_inputs = 0;286	pipe->brx = NULL;287	pipe->hgo = NULL;288	pipe->hgt = NULL;289	pipe->lif = NULL;290	pipe->uds = NULL;291}292 293void vsp1_pipeline_init(struct vsp1_pipeline *pipe)294{295	mutex_init(&pipe->lock);296	spin_lock_init(&pipe->irqlock);297	init_waitqueue_head(&pipe->wq);298	kref_init(&pipe->kref);299 300	INIT_LIST_HEAD(&pipe->entities);301	pipe->state = VSP1_PIPELINE_STOPPED;302}303 304void __vsp1_pipeline_dump(struct _ddebug *dbg, struct vsp1_pipeline *pipe,305			  const char *msg)306{307	struct vsp1_device *vsp1 = pipe->output->entity.vsp1;308	struct vsp1_entity *entity;309	bool first = true;310 311	printk(KERN_DEBUG "%s: %s: pipe: ", dev_name(vsp1->dev), msg);312 313	list_for_each_entry(entity, &pipe->entities, list_pipe) {314		const char *name;315 316		name = strchrnul(entity->subdev.name, ' ');317		name = name ? name + 1 : entity->subdev.name;318 319		pr_cont("%s%s", first ? "" : ", ", name);320		first = false;321	}322 323	pr_cont("\n");324}325 326/* Must be called with the pipe irqlock held. */327void vsp1_pipeline_run(struct vsp1_pipeline *pipe)328{329	struct vsp1_device *vsp1 = pipe->output->entity.vsp1;330 331	if (pipe->state == VSP1_PIPELINE_STOPPED) {332		vsp1_write(vsp1, VI6_CMD(pipe->output->entity.index),333			   VI6_CMD_STRCMD);334		pipe->state = VSP1_PIPELINE_RUNNING;335	}336 337	pipe->buffers_ready = 0;338}339 340bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe)341{342	unsigned long flags;343	bool stopped;344 345	spin_lock_irqsave(&pipe->irqlock, flags);346	stopped = pipe->state == VSP1_PIPELINE_STOPPED;347	spin_unlock_irqrestore(&pipe->irqlock, flags);348 349	return stopped;350}351 352int vsp1_pipeline_stop(struct vsp1_pipeline *pipe)353{354	struct vsp1_device *vsp1 = pipe->output->entity.vsp1;355	struct vsp1_entity *entity;356	unsigned long flags;357	int ret;358 359	if (pipe->lif) {360		/*361		 * When using display lists in continuous frame mode the only362		 * way to stop the pipeline is to reset the hardware.363		 */364		ret = vsp1_reset_wpf(vsp1, pipe->output->entity.index);365		if (ret == 0) {366			spin_lock_irqsave(&pipe->irqlock, flags);367			pipe->state = VSP1_PIPELINE_STOPPED;368			spin_unlock_irqrestore(&pipe->irqlock, flags);369		}370	} else {371		/* Otherwise just request a stop and wait. */372		spin_lock_irqsave(&pipe->irqlock, flags);373		if (pipe->state == VSP1_PIPELINE_RUNNING)374			pipe->state = VSP1_PIPELINE_STOPPING;375		spin_unlock_irqrestore(&pipe->irqlock, flags);376 377		ret = wait_event_timeout(pipe->wq, vsp1_pipeline_stopped(pipe),378					 msecs_to_jiffies(500));379		ret = ret == 0 ? -ETIMEDOUT : 0;380	}381 382	list_for_each_entry(entity, &pipe->entities, list_pipe) {383		if (entity->route && entity->route->reg)384			vsp1_write(vsp1, entity->route->reg,385				   VI6_DPR_NODE_UNUSED);386	}387 388	if (pipe->hgo)389		vsp1_write(vsp1, VI6_DPR_HGO_SMPPT,390			   (7 << VI6_DPR_SMPPT_TGW_SHIFT) |391			   (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));392 393	if (pipe->hgt)394		vsp1_write(vsp1, VI6_DPR_HGT_SMPPT,395			   (7 << VI6_DPR_SMPPT_TGW_SHIFT) |396			   (VI6_DPR_NODE_UNUSED << VI6_DPR_SMPPT_PT_SHIFT));397 398	vsp1_wpf_stop(pipe->output);399 400	return ret;401}402 403bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe)404{405	unsigned int mask;406 407	mask = ((1 << pipe->num_inputs) - 1) << 1;408	if (!pipe->lif)409		mask |= 1 << 0;410 411	return pipe->buffers_ready == mask;412}413 414void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe)415{416	unsigned int flags;417 418	if (pipe == NULL)419		return;420 421	/*422	 * If the DL commit raced with the frame end interrupt, the commit ends423	 * up being postponed by one frame. The returned flags tell whether the424	 * active frame was finished or postponed.425	 */426	flags = vsp1_dlm_irq_frame_end(pipe->output->dlm);427 428	if (pipe->hgo)429		vsp1_hgo_frame_end(pipe->hgo);430 431	if (pipe->hgt)432		vsp1_hgt_frame_end(pipe->hgt);433 434	/*435	 * Regardless of frame completion we still need to notify the pipe436	 * frame_end to account for vblank events.437	 */438	if (pipe->frame_end)439		pipe->frame_end(pipe, flags);440 441	pipe->sequence++;442}443 444/*445 * Propagate the alpha value through the pipeline.446 *447 * As the UDS has restricted scaling capabilities when the alpha component needs448 * to be scaled, we disable alpha scaling when the UDS input has a fixed alpha449 * value. The UDS then outputs a fixed alpha value which needs to be programmed450 * from the input RPF alpha.451 */452void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,453				   struct vsp1_dl_body *dlb, unsigned int alpha)454{455	if (!pipe->uds)456		return;457 458	/*459	 * The BRU and BRS background color has a fixed alpha value set to 255,460	 * the output alpha value is thus always equal to 255.461	 */462	if (pipe->uds_input->type == VSP1_ENTITY_BRU ||463	    pipe->uds_input->type == VSP1_ENTITY_BRS)464		alpha = 255;465 466	vsp1_uds_set_alpha(pipe->uds, dlb, alpha);467}468 469/* -----------------------------------------------------------------------------470 * VSP1 Partition Algorithm support471 */472 473/*474 * Propagate the partition calculations through the pipeline475 *476 * Work backwards through the pipe, allowing each entity to update the partition477 * parameters based on its configuration, and the entity connected to its478 * source. Each entity must produce the partition required for the previous479 * entity in the pipeline.480 */481static void vsp1_pipeline_propagate_partition(struct vsp1_pipeline *pipe,482					      struct vsp1_partition *partition,483					      unsigned int index,484					      struct v4l2_rect *window)485{486	struct vsp1_entity *entity;487 488	list_for_each_entry_reverse(entity, &pipe->entities, list_pipe) {489		if (entity->ops->partition)490			entity->ops->partition(entity, entity->state, pipe,491					       partition, index, window);492	}493}494 495/*496 * vsp1_pipeline_calculate_partition - Calculate pipeline configuration for a497 * partition498 *499 * @pipe: the pipeline500 * @partition: partition that will hold the calculated values501 * @div_size: pre-determined maximum partition division size502 * @index: partition index503 */504void vsp1_pipeline_calculate_partition(struct vsp1_pipeline *pipe,505				       struct vsp1_partition *partition,506				       unsigned int div_size,507				       unsigned int index)508{509	const struct v4l2_mbus_framefmt *format;510	struct v4l2_rect window;511	unsigned int modulus;512 513	/*514	 * Partitions are computed on the size before rotation, use the format515	 * at the WPF sink.516	 */517	format = v4l2_subdev_state_get_format(pipe->output->entity.state,518					      RWPF_PAD_SINK);519 520	/* Initialise the partition with sane starting conditions. */521	window.left = index * div_size;522	window.width = div_size;523	window.top = 0;524	window.height = format->height;525 526	modulus = format->width % div_size;527 528	/*529	 * We need to prevent the last partition from being smaller than the530	 * *minimum* width of the hardware capabilities.531	 *532	 * If the modulus is less than half of the partition size,533	 * the penultimate partition is reduced to half, which is added534	 * to the final partition: |1234|1234|1234|12|341|535	 * to prevent this:        |1234|1234|1234|1234|1|.536	 */537	if (modulus) {538		/*539		 * pipe->partitions is 1 based, whilst index is a 0 based index.540		 * Normalise this locally.541		 */542		unsigned int partitions = pipe->partitions - 1;543 544		if (modulus < div_size / 2) {545			if (index == partitions - 1) {546				/* Halve the penultimate partition. */547				window.width = div_size / 2;548			} else if (index == partitions) {549				/* Increase the final partition. */550				window.width = (div_size / 2) + modulus;551				window.left -= div_size / 2;552			}553		} else if (index == partitions) {554			window.width = modulus;555		}556	}557 558	vsp1_pipeline_propagate_partition(pipe, partition, index, &window);559}560