aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/platform/rockchip/rkisp1/rkisp1-stats.c
blob: 3b2783700abc27b859082b64b5229a4496ff71d5 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Rockchip ISP1 Driver - Stats subdevice
 *
 * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
 */

#include <media/v4l2-common.h>
#include <media/v4l2-event.h>
#include <media/v4l2-ioctl.h>
#include <media/videobuf2-core.h>
#include <media/videobuf2-vmalloc.h>	/* for ISP statistics */

#include "rkisp1-common.h"

#define RKISP1_STATS_DEV_NAME	RKISP1_DRIVER_NAME "_stats"

#define RKISP1_ISP_STATS_REQ_BUFS_MIN 2
#define RKISP1_ISP_STATS_REQ_BUFS_MAX 8

static int rkisp1_stats_enum_fmt_meta_cap(struct file *file, void *priv,
					  struct v4l2_fmtdesc *f)
{
	struct video_device *video = video_devdata(file);
	struct rkisp1_stats *stats = video_get_drvdata(video);

	if (f->index > 0 || f->type != video->queue->type)
		return -EINVAL;

	f->pixelformat = stats->vdev_fmt.fmt.meta.dataformat;
	return 0;
}

static int rkisp1_stats_g_fmt_meta_cap(struct file *file, void *priv,
				       struct v4l2_format *f)
{
	struct video_device *video = video_devdata(file);
	struct rkisp1_stats *stats = video_get_drvdata(video);
	struct v4l2_meta_format *meta = &f->fmt.meta;

	if (f->type != video->queue->type)
		return -EINVAL;

	memset(meta, 0, sizeof(*meta));
	meta->dataformat = stats->vdev_fmt.fmt.meta.dataformat;
	meta->buffersize = stats->vdev_fmt.fmt.meta.buffersize;

	return 0;
}

static int rkisp1_stats_querycap(struct file *file,
				 void *priv, struct v4l2_capability *cap)
{
	struct video_device *vdev = video_devdata(file);

	strscpy(cap->driver, RKISP1_DRIVER_NAME, sizeof(cap->driver));
	strscpy(cap->card, vdev->name, sizeof(cap->card));
	strscpy(cap->bus_info, RKISP1_BUS_INFO, sizeof(cap->bus_info));

	return 0;
}

/* ISP video device IOCTLs */
static const struct v4l2_ioctl_ops rkisp1_stats_ioctl = {
	.vidioc_reqbufs = vb2_ioctl_reqbufs,
	.vidioc_querybuf = vb2_ioctl_querybuf,
	.vidioc_create_bufs = vb2_ioctl_create_bufs,
	.vidioc_qbuf = vb2_ioctl_qbuf,
	.vidioc_dqbuf = vb2_ioctl_dqbuf,
	.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
	.vidioc_expbuf = vb2_ioctl_expbuf,
	.vidioc_streamon = vb2_ioctl_streamon,
	.vidioc_streamoff = vb2_ioctl_streamoff,
	.vidioc_enum_fmt_meta_cap = rkisp1_stats_enum_fmt_meta_cap,
	.vidioc_g_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap,
	.vidioc_s_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap,
	.vidioc_try_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap,
	.vidioc_querycap = rkisp1_stats_querycap,
	.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
	.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
};

static const struct v4l2_file_operations rkisp1_stats_fops = {
	.mmap = vb2_fop_mmap,
	.unlocked_ioctl = video_ioctl2,
	.poll = vb2_fop_poll,
	.open = v4l2_fh_open,
	.release = vb2_fop_release
};

static int rkisp1_stats_vb2_queue_setup(struct vb2_queue *vq,
					unsigned int *num_buffers,
					unsigned int *num_planes,
					unsigned int sizes[],
					struct device *alloc_devs[])
{
	*num_planes = 1;

	*num_buffers = clamp_t(u32, *num_buffers, RKISP1_ISP_STATS_REQ_BUFS_MIN,
			       RKISP1_ISP_STATS_REQ_BUFS_MAX);

	sizes[0] = sizeof(struct rkisp1_stat_buffer);

	return 0;
}

static void rkisp1_stats_vb2_buf_queue(struct vb2_buffer *vb)
{
	struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
	struct rkisp1_buffer *stats_buf =
		container_of(vbuf, struct rkisp1_buffer, vb);
	struct vb2_queue *vq = vb->vb2_queue;
	struct rkisp1_stats *stats_dev = vq->drv_priv;

	stats_buf->vaddr = vb2_plane_vaddr(vb, 0);

	spin_lock_irq(&stats_dev->lock);
	list_add_tail(&stats_buf->queue, &stats_dev->stat);
	spin_unlock_irq(&stats_dev->lock);
}

static int rkisp1_stats_vb2_buf_prepare(struct vb2_buffer *vb)
{
	if (vb2_plane_size(vb, 0) < sizeof(struct rkisp1_stat_buffer))
		return -EINVAL;

	vb2_set_plane_payload(vb, 0, sizeof(struct rkisp1_stat_buffer));

	return 0;
}

static void rkisp1_stats_vb2_stop_streaming(struct vb2_queue *vq)
{
	struct rkisp1_stats *stats = vq->drv_priv;
	struct rkisp1_buffer *buf;
	unsigned int i;

	spin_lock_irq(&stats->lock);
	for (i = 0; i < RKISP1_ISP_STATS_REQ_BUFS_MAX; i++) {
		if (list_empty(&stats->stat))
			break;
		buf = list_first_entry(&stats->stat,
				       struct rkisp1_buffer, queue);
		list_del(&buf->queue);
		vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
	}
	spin_unlock_irq(&stats->lock);
}

static const struct vb2_ops rkisp1_stats_vb2_ops = {
	.queue_setup = rkisp1_stats_vb2_queue_setup,
	.buf_queue = rkisp1_stats_vb2_buf_queue,
	.buf_prepare = rkisp1_stats_vb2_buf_prepare,
	.wait_prepare = vb2_ops_wait_prepare,
	.wait_finish = vb2_ops_wait_finish,
	.stop_streaming = rkisp1_stats_vb2_stop_streaming,
};

static int
rkisp1_stats_init_vb2_queue(struct vb2_queue *q, struct rkisp1_stats *stats)
{
	struct rkisp1_vdev_node *node;

	node = container_of(q, struct rkisp1_vdev_node, buf_queue);

	q->type = V4L2_BUF_TYPE_META_CAPTURE;
	q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
	q->drv_priv = stats;
	q->ops = &rkisp1_stats_vb2_ops;
	q->mem_ops = &vb2_vmalloc_memops;
	q->buf_struct_size = sizeof(struct rkisp1_buffer);
	q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
	q->lock = &node->vlock;

	return vb2_queue_init(q);
}

static void rkisp1_stats_get_awb_meas(struct rkisp1_stats *stats,
				      struct rkisp1_stat_buffer *pbuf)
{
	/* Protect against concurrent access from ISR? */
	struct rkisp1_device *rkisp1 = stats->rkisp1;
	u32 reg_val;

	pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AWB;
	reg_val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AWB_WHITE_CNT);
	pbuf->params.awb.awb_mean[0].cnt =
				RKISP1_CIF_ISP_AWB_GET_PIXEL_CNT(reg_val);
	reg_val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AWB_MEAN);

	pbuf->params.awb.awb_mean[0].mean_cr_or_r =
				RKISP1_CIF_ISP_AWB_GET_MEAN_CR_R(reg_val);
	pbuf->params.awb.awb_mean[0].mean_cb_or_b =
				RKISP1_CIF_ISP_AWB_GET_MEAN_CB_B(reg_val);
	pbuf->params.awb.awb_mean[0].mean_y_or_g =
				RKISP1_CIF_ISP_AWB_GET_MEAN_Y_G(reg_val);
}

static void rkisp1_stats_get_aec_meas(struct rkisp1_stats *stats,
				      struct rkisp1_stat_buffer *pbuf)
{
	struct rkisp1_device *rkisp1 = stats->rkisp1;
	unsigned int i;

	pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AUTOEXP;
	for (i = 0; i < RKISP1_CIF_ISP_AE_MEAN_MAX; i++)
		pbuf->params.ae.exp_mean[i] =
			(u8)rkisp1_read(rkisp1,
					RKISP1_CIF_ISP_EXP_MEAN_00 + i * 4);
}

static void rkisp1_stats_get_afc_meas(struct rkisp1_stats *stats,
				      struct rkisp1_stat_buffer *pbuf)
{
	struct rkisp1_device *rkisp1 = stats->rkisp1;
	struct rkisp1_cif_isp_af_stat *af;

	pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AFM;

	af = &pbuf->params.af;
	af->window[0].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_A);
	af->window[0].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_A);
	af->window[1].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_B);
	af->window[1].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_B);
	af->window[2].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_C);
	af->window[2].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_C);
}

static void rkisp1_stats_get_hst_meas(struct rkisp1_stats *stats,
				      struct rkisp1_stat_buffer *pbuf)
{
	struct rkisp1_device *rkisp1 = stats->rkisp1;
	unsigned int i;

	pbuf->meas_type |= RKISP1_CIF_ISP_STAT_HIST;
	for (i = 0; i < RKISP1_CIF_ISP_HIST_BIN_N_MAX; i++) {
		u32 reg_val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_HIST_BIN_0 + i * 4);

		pbuf->params.hist.hist_bins[i] = RKISP1_CIF_ISP_HIST_GET_BIN(reg_val);
	}
}

static void rkisp1_stats_get_bls_meas(struct rkisp1_stats *stats,
				      struct rkisp1_stat_buffer *pbuf)
{
	struct rkisp1_device *rkisp1 = stats->rkisp1;
	const struct rkisp1_isp_mbus_info *in_fmt = rkisp1->isp.sink_fmt;
	struct rkisp1_cif_isp_bls_meas_val *bls_val;

	bls_val = &pbuf->params.ae.bls_val;
	if (in_fmt->bayer_pat == RKISP1_RAW_BGGR) {
		bls_val->meas_b =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
		bls_val->meas_gb =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
		bls_val->meas_gr =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
		bls_val->meas_r =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
	} else if (in_fmt->bayer_pat == RKISP1_RAW_GBRG) {
		bls_val->meas_gb =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
		bls_val->meas_b =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
		bls_val->meas_r =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
		bls_val->meas_gr =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
	} else if (in_fmt->bayer_pat == RKISP1_RAW_GRBG) {
		bls_val->meas_gr =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
		bls_val->meas_r =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
		bls_val->meas_b =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
		bls_val->meas_gb =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
	} else if (in_fmt->bayer_pat == RKISP1_RAW_RGGB) {
		bls_val->meas_r =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
		bls_val->meas_gr =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
		bls_val->meas_gb =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
		bls_val->meas_b =
			rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
	}
}

static void
rkisp1_stats_send_measurement(struct rkisp1_stats *stats, u32 isp_ris)
{
	struct rkisp1_stat_buffer *cur_stat_buf;
	struct rkisp1_buffer *cur_buf = NULL;
	unsigned int frame_sequence = stats->rkisp1->isp.frame_sequence;
	u64 timestamp = ktime_get_ns();

	/* get one empty buffer */
	if (!list_empty(&stats->stat)) {
		cur_buf = list_first_entry(&stats->stat,
					   struct rkisp1_buffer, queue);
		list_del(&cur_buf->queue);
	}

	if (!cur_buf)
		return;

	cur_stat_buf =
		(struct rkisp1_stat_buffer *)(cur_buf->vaddr);

	if (isp_ris & RKISP1_CIF_ISP_AWB_DONE)
		rkisp1_stats_get_awb_meas(stats, cur_stat_buf);

	if (isp_ris & RKISP1_CIF_ISP_AFM_FIN)
		rkisp1_stats_get_afc_meas(stats, cur_stat_buf);

	if (isp_ris & RKISP1_CIF_ISP_EXP_END) {
		rkisp1_stats_get_aec_meas(stats, cur_stat_buf);
		rkisp1_stats_get_bls_meas(stats, cur_stat_buf);
	}

	if (isp_ris & RKISP1_CIF_ISP_HIST_MEASURE_RDY)
		rkisp1_stats_get_hst_meas(stats, cur_stat_buf);

	vb2_set_plane_payload(&cur_buf->vb.vb2_buf, 0,
			      sizeof(struct rkisp1_stat_buffer));
	cur_buf->vb.sequence = frame_sequence;
	cur_buf->vb.vb2_buf.timestamp = timestamp;
	vb2_buffer_done(&cur_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
}

void rkisp1_stats_isr(struct rkisp1_stats *stats, u32 isp_ris)
{
	struct rkisp1_device *rkisp1 = stats->rkisp1;
	unsigned int isp_mis_tmp = 0;

	spin_lock(&stats->lock);

	rkisp1_write(rkisp1, RKISP1_STATS_MEAS_MASK, RKISP1_CIF_ISP_ICR);

	isp_mis_tmp = rkisp1_read(rkisp1, RKISP1_CIF_ISP_MIS);
	if (isp_mis_tmp & RKISP1_STATS_MEAS_MASK)
		rkisp1->debug.stats_error++;

	if (isp_ris & RKISP1_STATS_MEAS_MASK)
		rkisp1_stats_send_measurement(stats, isp_ris);

	spin_unlock(&stats->lock);
}

static void rkisp1_init_stats(struct rkisp1_stats *stats)
{
	stats->vdev_fmt.fmt.meta.dataformat =
		V4L2_META_FMT_RK_ISP1_STAT_3A;
	stats->vdev_fmt.fmt.meta.buffersize =
		sizeof(struct rkisp1_stat_buffer);
}

int rkisp1_stats_register(struct rkisp1_device *rkisp1)
{
	struct rkisp1_stats *stats = &rkisp1->stats;
	struct rkisp1_vdev_node *node = &stats->vnode;
	struct video_device *vdev = &node->vdev;
	int ret;

	stats->rkisp1 = rkisp1;
	mutex_init(&node->vlock);
	INIT_LIST_HEAD(&stats->stat);
	spin_lock_init(&stats->lock);

	strscpy(vdev->name, RKISP1_STATS_DEV_NAME, sizeof(vdev->name));

	video_set_drvdata(vdev, stats);
	vdev->ioctl_ops = &rkisp1_stats_ioctl;
	vdev->fops = &rkisp1_stats_fops;
	vdev->release = video_device_release_empty;
	vdev->lock = &node->vlock;
	vdev->v4l2_dev = &rkisp1->v4l2_dev;
	vdev->queue = &node->buf_queue;
	vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
	vdev->vfl_dir =  VFL_DIR_RX;
	rkisp1_stats_init_vb2_queue(vdev->queue, stats);
	rkisp1_init_stats(stats);
	video_set_drvdata(vdev, stats);

	node->pad.flags = MEDIA_PAD_FL_SINK;
	ret = media_entity_pads_init(&vdev->entity, 1, &node->pad);
	if (ret)
		goto err_mutex_destroy;

	ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
	if (ret) {
		dev_err(&vdev->dev,
			"failed to register %s, ret=%d\n", vdev->name, ret);
		goto err_cleanup_media_entity;
	}

	return 0;

err_cleanup_media_entity:
	media_entity_cleanup(&vdev->entity);
err_mutex_destroy:
	mutex_destroy(&node->vlock);
	return ret;
}

void rkisp1_stats_unregister(struct rkisp1_device *rkisp1)
{
	struct rkisp1_stats *stats = &rkisp1->stats;
	struct rkisp1_vdev_node *node = &stats->vnode;
	struct video_device *vdev = &node->vdev;

	vb2_video_unregister_device(vdev);
	media_entity_cleanup(&vdev->entity);
	mutex_destroy(&node->vlock);
}

Privacy Policy