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8#include <media/v4l2-common.h>
9#include <media/v4l2-event.h>
10#include <media/v4l2-ioctl.h>
11#include <media/videobuf2-core.h>
12#include <media/videobuf2-vmalloc.h>
13
14#include "rkisp1-common.h"
15
16#define RKISP1_STATS_DEV_NAME RKISP1_DRIVER_NAME "_stats"
17
18#define RKISP1_ISP_STATS_REQ_BUFS_MIN 2
19#define RKISP1_ISP_STATS_REQ_BUFS_MAX 8
20
21static int rkisp1_stats_enum_fmt_meta_cap(struct file *file, void *priv,
22 struct v4l2_fmtdesc *f)
23{
24 struct video_device *video = video_devdata(file);
25 struct rkisp1_stats *stats = video_get_drvdata(video);
26
27 if (f->index > 0 || f->type != video->queue->type)
28 return -EINVAL;
29
30 f->pixelformat = stats->vdev_fmt.fmt.meta.dataformat;
31 return 0;
32}
33
34static int rkisp1_stats_g_fmt_meta_cap(struct file *file, void *priv,
35 struct v4l2_format *f)
36{
37 struct video_device *video = video_devdata(file);
38 struct rkisp1_stats *stats = video_get_drvdata(video);
39 struct v4l2_meta_format *meta = &f->fmt.meta;
40
41 if (f->type != video->queue->type)
42 return -EINVAL;
43
44 memset(meta, 0, sizeof(*meta));
45 meta->dataformat = stats->vdev_fmt.fmt.meta.dataformat;
46 meta->buffersize = stats->vdev_fmt.fmt.meta.buffersize;
47
48 return 0;
49}
50
51static int rkisp1_stats_querycap(struct file *file,
52 void *priv, struct v4l2_capability *cap)
53{
54 struct video_device *vdev = video_devdata(file);
55
56 strscpy(cap->driver, RKISP1_DRIVER_NAME, sizeof(cap->driver));
57 strscpy(cap->card, vdev->name, sizeof(cap->card));
58 strscpy(cap->bus_info, RKISP1_BUS_INFO, sizeof(cap->bus_info));
59
60 return 0;
61}
62
63
64static const struct v4l2_ioctl_ops rkisp1_stats_ioctl = {
65 .vidioc_reqbufs = vb2_ioctl_reqbufs,
66 .vidioc_querybuf = vb2_ioctl_querybuf,
67 .vidioc_create_bufs = vb2_ioctl_create_bufs,
68 .vidioc_qbuf = vb2_ioctl_qbuf,
69 .vidioc_dqbuf = vb2_ioctl_dqbuf,
70 .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
71 .vidioc_expbuf = vb2_ioctl_expbuf,
72 .vidioc_streamon = vb2_ioctl_streamon,
73 .vidioc_streamoff = vb2_ioctl_streamoff,
74 .vidioc_enum_fmt_meta_cap = rkisp1_stats_enum_fmt_meta_cap,
75 .vidioc_g_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap,
76 .vidioc_s_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap,
77 .vidioc_try_fmt_meta_cap = rkisp1_stats_g_fmt_meta_cap,
78 .vidioc_querycap = rkisp1_stats_querycap,
79 .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
80 .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
81};
82
83static const struct v4l2_file_operations rkisp1_stats_fops = {
84 .mmap = vb2_fop_mmap,
85 .unlocked_ioctl = video_ioctl2,
86 .poll = vb2_fop_poll,
87 .open = v4l2_fh_open,
88 .release = vb2_fop_release
89};
90
91static int rkisp1_stats_vb2_queue_setup(struct vb2_queue *vq,
92 unsigned int *num_buffers,
93 unsigned int *num_planes,
94 unsigned int sizes[],
95 struct device *alloc_devs[])
96{
97 struct rkisp1_stats *stats = vq->drv_priv;
98
99 *num_planes = 1;
100
101 *num_buffers = clamp_t(u32, *num_buffers, RKISP1_ISP_STATS_REQ_BUFS_MIN,
102 RKISP1_ISP_STATS_REQ_BUFS_MAX);
103
104 sizes[0] = sizeof(struct rkisp1_stat_buffer);
105
106 INIT_LIST_HEAD(&stats->stat);
107
108 return 0;
109}
110
111static void rkisp1_stats_vb2_buf_queue(struct vb2_buffer *vb)
112{
113 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
114 struct rkisp1_buffer *stats_buf =
115 container_of(vbuf, struct rkisp1_buffer, vb);
116 struct vb2_queue *vq = vb->vb2_queue;
117 struct rkisp1_stats *stats_dev = vq->drv_priv;
118
119 stats_buf->vaddr[0] = vb2_plane_vaddr(vb, 0);
120
121 spin_lock_irq(&stats_dev->lock);
122 list_add_tail(&stats_buf->queue, &stats_dev->stat);
123 spin_unlock_irq(&stats_dev->lock);
124}
125
126static int rkisp1_stats_vb2_buf_prepare(struct vb2_buffer *vb)
127{
128 if (vb2_plane_size(vb, 0) < sizeof(struct rkisp1_stat_buffer))
129 return -EINVAL;
130
131 vb2_set_plane_payload(vb, 0, sizeof(struct rkisp1_stat_buffer));
132
133 return 0;
134}
135
136static void rkisp1_stats_vb2_stop_streaming(struct vb2_queue *vq)
137{
138 struct rkisp1_stats *stats = vq->drv_priv;
139 struct rkisp1_buffer *buf;
140 unsigned int i;
141
142 spin_lock_irq(&stats->lock);
143 stats->is_streaming = false;
144 for (i = 0; i < RKISP1_ISP_STATS_REQ_BUFS_MAX; i++) {
145 if (list_empty(&stats->stat))
146 break;
147 buf = list_first_entry(&stats->stat,
148 struct rkisp1_buffer, queue);
149 list_del(&buf->queue);
150 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
151 }
152 spin_unlock_irq(&stats->lock);
153}
154
155static int
156rkisp1_stats_vb2_start_streaming(struct vb2_queue *queue, unsigned int count)
157{
158 struct rkisp1_stats *stats = queue->drv_priv;
159
160 stats->is_streaming = true;
161
162 return 0;
163}
164
165static const struct vb2_ops rkisp1_stats_vb2_ops = {
166 .queue_setup = rkisp1_stats_vb2_queue_setup,
167 .buf_queue = rkisp1_stats_vb2_buf_queue,
168 .buf_prepare = rkisp1_stats_vb2_buf_prepare,
169 .wait_prepare = vb2_ops_wait_prepare,
170 .wait_finish = vb2_ops_wait_finish,
171 .stop_streaming = rkisp1_stats_vb2_stop_streaming,
172 .start_streaming = rkisp1_stats_vb2_start_streaming,
173};
174
175static int
176rkisp1_stats_init_vb2_queue(struct vb2_queue *q, struct rkisp1_stats *stats)
177{
178 struct rkisp1_vdev_node *node;
179
180 node = container_of(q, struct rkisp1_vdev_node, buf_queue);
181
182 q->type = V4L2_BUF_TYPE_META_CAPTURE;
183 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
184 q->drv_priv = stats;
185 q->ops = &rkisp1_stats_vb2_ops;
186 q->mem_ops = &vb2_vmalloc_memops;
187 q->buf_struct_size = sizeof(struct rkisp1_buffer);
188 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
189 q->lock = &node->vlock;
190
191 return vb2_queue_init(q);
192}
193
194static void rkisp1_stats_get_awb_meas(struct rkisp1_stats *stats,
195 struct rkisp1_stat_buffer *pbuf)
196{
197
198 struct rkisp1_device *rkisp1 = stats->rkisp1;
199 u32 reg_val;
200
201 pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AWB;
202 reg_val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AWB_WHITE_CNT);
203 pbuf->params.awb.awb_mean[0].cnt =
204 RKISP1_CIF_ISP_AWB_GET_PIXEL_CNT(reg_val);
205 reg_val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AWB_MEAN);
206
207 pbuf->params.awb.awb_mean[0].mean_cr_or_r =
208 RKISP1_CIF_ISP_AWB_GET_MEAN_CR_R(reg_val);
209 pbuf->params.awb.awb_mean[0].mean_cb_or_b =
210 RKISP1_CIF_ISP_AWB_GET_MEAN_CB_B(reg_val);
211 pbuf->params.awb.awb_mean[0].mean_y_or_g =
212 RKISP1_CIF_ISP_AWB_GET_MEAN_Y_G(reg_val);
213}
214
215static void rkisp1_stats_get_aec_meas(struct rkisp1_stats *stats,
216 struct rkisp1_stat_buffer *pbuf)
217{
218 struct rkisp1_device *rkisp1 = stats->rkisp1;
219 unsigned int i;
220
221 pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AUTOEXP;
222 for (i = 0; i < RKISP1_CIF_ISP_AE_MEAN_MAX; i++)
223 pbuf->params.ae.exp_mean[i] =
224 (u8)rkisp1_read(rkisp1,
225 RKISP1_CIF_ISP_EXP_MEAN_00 + i * 4);
226}
227
228static void rkisp1_stats_get_afc_meas(struct rkisp1_stats *stats,
229 struct rkisp1_stat_buffer *pbuf)
230{
231 struct rkisp1_device *rkisp1 = stats->rkisp1;
232 struct rkisp1_cif_isp_af_stat *af;
233
234 pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AFM_FIN;
235
236 af = &pbuf->params.af;
237 af->window[0].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_A);
238 af->window[0].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_A);
239 af->window[1].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_B);
240 af->window[1].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_B);
241 af->window[2].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_C);
242 af->window[2].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_C);
243}
244
245static void rkisp1_stats_get_hst_meas(struct rkisp1_stats *stats,
246 struct rkisp1_stat_buffer *pbuf)
247{
248 struct rkisp1_device *rkisp1 = stats->rkisp1;
249 unsigned int i;
250
251 pbuf->meas_type |= RKISP1_CIF_ISP_STAT_HIST;
252 for (i = 0; i < RKISP1_CIF_ISP_HIST_BIN_N_MAX; i++)
253 pbuf->params.hist.hist_bins[i] =
254 (u8)rkisp1_read(rkisp1,
255 RKISP1_CIF_ISP_HIST_BIN_0 + i * 4);
256}
257
258static void rkisp1_stats_get_bls_meas(struct rkisp1_stats *stats,
259 struct rkisp1_stat_buffer *pbuf)
260{
261 struct rkisp1_device *rkisp1 = stats->rkisp1;
262 const struct rkisp1_isp_mbus_info *in_fmt = rkisp1->isp.sink_fmt;
263 struct rkisp1_cif_isp_bls_meas_val *bls_val;
264
265 bls_val = &pbuf->params.ae.bls_val;
266 if (in_fmt->bayer_pat == RKISP1_RAW_BGGR) {
267 bls_val->meas_b =
268 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
269 bls_val->meas_gb =
270 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
271 bls_val->meas_gr =
272 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
273 bls_val->meas_r =
274 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
275 } else if (in_fmt->bayer_pat == RKISP1_RAW_GBRG) {
276 bls_val->meas_gb =
277 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
278 bls_val->meas_b =
279 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
280 bls_val->meas_r =
281 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
282 bls_val->meas_gr =
283 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
284 } else if (in_fmt->bayer_pat == RKISP1_RAW_GRBG) {
285 bls_val->meas_gr =
286 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
287 bls_val->meas_r =
288 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
289 bls_val->meas_b =
290 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
291 bls_val->meas_gb =
292 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
293 } else if (in_fmt->bayer_pat == RKISP1_RAW_RGGB) {
294 bls_val->meas_r =
295 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
296 bls_val->meas_gr =
297 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
298 bls_val->meas_gb =
299 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
300 bls_val->meas_b =
301 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
302 }
303}
304
305static void
306rkisp1_stats_send_measurement(struct rkisp1_stats *stats, u32 isp_ris)
307{
308 struct rkisp1_stat_buffer *cur_stat_buf;
309 struct rkisp1_buffer *cur_buf = NULL;
310 unsigned int frame_sequence =
311 atomic_read(&stats->rkisp1->isp.frame_sequence);
312 u64 timestamp = ktime_get_ns();
313
314
315 if (!list_empty(&stats->stat)) {
316 cur_buf = list_first_entry(&stats->stat,
317 struct rkisp1_buffer, queue);
318 list_del(&cur_buf->queue);
319 }
320
321 if (!cur_buf)
322 return;
323
324 cur_stat_buf =
325 (struct rkisp1_stat_buffer *)(cur_buf->vaddr[0]);
326
327 if (isp_ris & RKISP1_CIF_ISP_AWB_DONE)
328 rkisp1_stats_get_awb_meas(stats, cur_stat_buf);
329
330 if (isp_ris & RKISP1_CIF_ISP_AFM_FIN)
331 rkisp1_stats_get_afc_meas(stats, cur_stat_buf);
332
333 if (isp_ris & RKISP1_CIF_ISP_EXP_END) {
334 rkisp1_stats_get_aec_meas(stats, cur_stat_buf);
335 rkisp1_stats_get_bls_meas(stats, cur_stat_buf);
336 }
337
338 if (isp_ris & RKISP1_CIF_ISP_HIST_MEASURE_RDY)
339 rkisp1_stats_get_hst_meas(stats, cur_stat_buf);
340
341 vb2_set_plane_payload(&cur_buf->vb.vb2_buf, 0,
342 sizeof(struct rkisp1_stat_buffer));
343 cur_buf->vb.sequence = frame_sequence;
344 cur_buf->vb.vb2_buf.timestamp = timestamp;
345 vb2_buffer_done(&cur_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
346}
347
348void rkisp1_stats_isr(struct rkisp1_stats *stats, u32 isp_ris)
349{
350 struct rkisp1_device *rkisp1 = stats->rkisp1;
351 unsigned int isp_mis_tmp = 0;
352
353 spin_lock(&stats->lock);
354
355 rkisp1_write(rkisp1, RKISP1_STATS_MEAS_MASK, RKISP1_CIF_ISP_ICR);
356
357 isp_mis_tmp = rkisp1_read(rkisp1, RKISP1_CIF_ISP_MIS);
358 if (isp_mis_tmp & RKISP1_STATS_MEAS_MASK)
359 rkisp1->debug.stats_error++;
360
361 if (!stats->is_streaming)
362 goto unlock;
363 if (isp_ris & RKISP1_STATS_MEAS_MASK)
364 rkisp1_stats_send_measurement(stats, isp_ris);
365
366unlock:
367 spin_unlock(&stats->lock);
368}
369
370static void rkisp1_init_stats(struct rkisp1_stats *stats)
371{
372 stats->vdev_fmt.fmt.meta.dataformat =
373 V4L2_META_FMT_RK_ISP1_STAT_3A;
374 stats->vdev_fmt.fmt.meta.buffersize =
375 sizeof(struct rkisp1_stat_buffer);
376}
377
378int rkisp1_stats_register(struct rkisp1_stats *stats,
379 struct v4l2_device *v4l2_dev,
380 struct rkisp1_device *rkisp1)
381{
382 struct rkisp1_vdev_node *node = &stats->vnode;
383 struct video_device *vdev = &node->vdev;
384 int ret;
385
386 stats->rkisp1 = rkisp1;
387 mutex_init(&node->vlock);
388 INIT_LIST_HEAD(&stats->stat);
389 spin_lock_init(&stats->lock);
390
391 strscpy(vdev->name, RKISP1_STATS_DEV_NAME, sizeof(vdev->name));
392
393 video_set_drvdata(vdev, stats);
394 vdev->ioctl_ops = &rkisp1_stats_ioctl;
395 vdev->fops = &rkisp1_stats_fops;
396 vdev->release = video_device_release_empty;
397 vdev->lock = &node->vlock;
398 vdev->v4l2_dev = v4l2_dev;
399 vdev->queue = &node->buf_queue;
400 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
401 vdev->vfl_dir = VFL_DIR_RX;
402 rkisp1_stats_init_vb2_queue(vdev->queue, stats);
403 rkisp1_init_stats(stats);
404 video_set_drvdata(vdev, stats);
405
406 node->pad.flags = MEDIA_PAD_FL_SINK;
407 ret = media_entity_pads_init(&vdev->entity, 1, &node->pad);
408 if (ret)
409 goto err_release_queue;
410
411 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
412 if (ret) {
413 dev_err(&vdev->dev,
414 "failed to register %s, ret=%d\n", vdev->name, ret);
415 goto err_cleanup_media_entity;
416 }
417
418 return 0;
419
420err_cleanup_media_entity:
421 media_entity_cleanup(&vdev->entity);
422err_release_queue:
423 vb2_queue_release(vdev->queue);
424 mutex_destroy(&node->vlock);
425 return ret;
426}
427
428void rkisp1_stats_unregister(struct rkisp1_stats *stats)
429{
430 struct rkisp1_vdev_node *node = &stats->vnode;
431 struct video_device *vdev = &node->vdev;
432
433 video_unregister_device(vdev);
434 media_entity_cleanup(&vdev->entity);
435 vb2_queue_release(vdev->queue);
436 mutex_destroy(&node->vlock);
437}
438
