1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Rockchip ISP1 Driver - Stats subdevice
5 * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
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> /* for ISP statistics */
14 #include "rkisp1-common.h"
16 #define RKISP1_STATS_DEV_NAME RKISP1_DRIVER_NAME "_stats"
18 #define RKISP1_ISP_STATS_REQ_BUFS_MIN 2
19 #define RKISP1_ISP_STATS_REQ_BUFS_MAX 8
21 static int rkisp1_stats_enum_fmt_meta_cap(struct file *file, void *priv,
22 struct v4l2_fmtdesc *f)
24 struct video_device *video = video_devdata(file);
25 struct rkisp1_stats *stats = video_get_drvdata(video);
27 if (f->index > 0 || f->type != video->queue->type)
30 f->pixelformat = stats->vdev_fmt.fmt.meta.dataformat;
34 static int rkisp1_stats_g_fmt_meta_cap(struct file *file, void *priv,
35 struct v4l2_format *f)
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;
41 if (f->type != video->queue->type)
44 memset(meta, 0, sizeof(*meta));
45 meta->dataformat = stats->vdev_fmt.fmt.meta.dataformat;
46 meta->buffersize = stats->vdev_fmt.fmt.meta.buffersize;
51 static int rkisp1_stats_querycap(struct file *file,
52 void *priv, struct v4l2_capability *cap)
54 struct video_device *vdev = video_devdata(file);
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));
63 /* ISP video device IOCTLs */
64 static 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,
83 static const struct v4l2_file_operations rkisp1_stats_fops = {
85 .unlocked_ioctl = video_ioctl2,
88 .release = vb2_fop_release
91 static int rkisp1_stats_vb2_queue_setup(struct vb2_queue *vq,
92 unsigned int *num_buffers,
93 unsigned int *num_planes,
95 struct device *alloc_devs[])
99 *num_buffers = clamp_t(u32, *num_buffers, RKISP1_ISP_STATS_REQ_BUFS_MIN,
100 RKISP1_ISP_STATS_REQ_BUFS_MAX);
102 sizes[0] = sizeof(struct rkisp1_stat_buffer);
107 static void rkisp1_stats_vb2_buf_queue(struct vb2_buffer *vb)
109 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
110 struct rkisp1_buffer *stats_buf =
111 container_of(vbuf, struct rkisp1_buffer, vb);
112 struct vb2_queue *vq = vb->vb2_queue;
113 struct rkisp1_stats *stats_dev = vq->drv_priv;
115 stats_buf->vaddr = vb2_plane_vaddr(vb, 0);
117 spin_lock_irq(&stats_dev->lock);
118 list_add_tail(&stats_buf->queue, &stats_dev->stat);
119 spin_unlock_irq(&stats_dev->lock);
122 static int rkisp1_stats_vb2_buf_prepare(struct vb2_buffer *vb)
124 if (vb2_plane_size(vb, 0) < sizeof(struct rkisp1_stat_buffer))
127 vb2_set_plane_payload(vb, 0, sizeof(struct rkisp1_stat_buffer));
132 static void rkisp1_stats_vb2_stop_streaming(struct vb2_queue *vq)
134 struct rkisp1_stats *stats = vq->drv_priv;
135 struct rkisp1_buffer *buf;
138 spin_lock_irq(&stats->lock);
139 for (i = 0; i < RKISP1_ISP_STATS_REQ_BUFS_MAX; i++) {
140 if (list_empty(&stats->stat))
142 buf = list_first_entry(&stats->stat,
143 struct rkisp1_buffer, queue);
144 list_del(&buf->queue);
145 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
147 spin_unlock_irq(&stats->lock);
150 static const struct vb2_ops rkisp1_stats_vb2_ops = {
151 .queue_setup = rkisp1_stats_vb2_queue_setup,
152 .buf_queue = rkisp1_stats_vb2_buf_queue,
153 .buf_prepare = rkisp1_stats_vb2_buf_prepare,
154 .wait_prepare = vb2_ops_wait_prepare,
155 .wait_finish = vb2_ops_wait_finish,
156 .stop_streaming = rkisp1_stats_vb2_stop_streaming,
160 rkisp1_stats_init_vb2_queue(struct vb2_queue *q, struct rkisp1_stats *stats)
162 struct rkisp1_vdev_node *node;
164 node = container_of(q, struct rkisp1_vdev_node, buf_queue);
166 q->type = V4L2_BUF_TYPE_META_CAPTURE;
167 q->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
169 q->ops = &rkisp1_stats_vb2_ops;
170 q->mem_ops = &vb2_vmalloc_memops;
171 q->buf_struct_size = sizeof(struct rkisp1_buffer);
172 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
173 q->lock = &node->vlock;
175 return vb2_queue_init(q);
178 static void rkisp1_stats_get_awb_meas(struct rkisp1_stats *stats,
179 struct rkisp1_stat_buffer *pbuf)
181 /* Protect against concurrent access from ISR? */
182 struct rkisp1_device *rkisp1 = stats->rkisp1;
185 pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AWB;
186 reg_val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AWB_WHITE_CNT);
187 pbuf->params.awb.awb_mean[0].cnt =
188 RKISP1_CIF_ISP_AWB_GET_PIXEL_CNT(reg_val);
189 reg_val = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AWB_MEAN);
191 pbuf->params.awb.awb_mean[0].mean_cr_or_r =
192 RKISP1_CIF_ISP_AWB_GET_MEAN_CR_R(reg_val);
193 pbuf->params.awb.awb_mean[0].mean_cb_or_b =
194 RKISP1_CIF_ISP_AWB_GET_MEAN_CB_B(reg_val);
195 pbuf->params.awb.awb_mean[0].mean_y_or_g =
196 RKISP1_CIF_ISP_AWB_GET_MEAN_Y_G(reg_val);
199 static void rkisp1_stats_get_aec_meas(struct rkisp1_stats *stats,
200 struct rkisp1_stat_buffer *pbuf)
202 struct rkisp1_device *rkisp1 = stats->rkisp1;
205 pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AUTOEXP;
206 for (i = 0; i < RKISP1_CIF_ISP_AE_MEAN_MAX; i++)
207 pbuf->params.ae.exp_mean[i] =
208 (u8)rkisp1_read(rkisp1,
209 RKISP1_CIF_ISP_EXP_MEAN_00 + i * 4);
212 static void rkisp1_stats_get_afc_meas(struct rkisp1_stats *stats,
213 struct rkisp1_stat_buffer *pbuf)
215 struct rkisp1_device *rkisp1 = stats->rkisp1;
216 struct rkisp1_cif_isp_af_stat *af;
218 pbuf->meas_type |= RKISP1_CIF_ISP_STAT_AFM;
220 af = &pbuf->params.af;
221 af->window[0].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_A);
222 af->window[0].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_A);
223 af->window[1].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_B);
224 af->window[1].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_B);
225 af->window[2].sum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_SUM_C);
226 af->window[2].lum = rkisp1_read(rkisp1, RKISP1_CIF_ISP_AFM_LUM_C);
229 static void rkisp1_stats_get_hst_meas(struct rkisp1_stats *stats,
230 struct rkisp1_stat_buffer *pbuf)
232 struct rkisp1_device *rkisp1 = stats->rkisp1;
235 pbuf->meas_type |= RKISP1_CIF_ISP_STAT_HIST;
236 for (i = 0; i < RKISP1_CIF_ISP_HIST_BIN_N_MAX; i++)
237 pbuf->params.hist.hist_bins[i] =
238 (u8)rkisp1_read(rkisp1,
239 RKISP1_CIF_ISP_HIST_BIN_0 + i * 4);
242 static void rkisp1_stats_get_bls_meas(struct rkisp1_stats *stats,
243 struct rkisp1_stat_buffer *pbuf)
245 struct rkisp1_device *rkisp1 = stats->rkisp1;
246 const struct rkisp1_isp_mbus_info *in_fmt = rkisp1->isp.sink_fmt;
247 struct rkisp1_cif_isp_bls_meas_val *bls_val;
249 bls_val = &pbuf->params.ae.bls_val;
250 if (in_fmt->bayer_pat == RKISP1_RAW_BGGR) {
252 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
254 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
256 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
258 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
259 } else if (in_fmt->bayer_pat == RKISP1_RAW_GBRG) {
261 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
263 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
265 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
267 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
268 } else if (in_fmt->bayer_pat == RKISP1_RAW_GRBG) {
270 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
272 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
274 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
276 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
277 } else if (in_fmt->bayer_pat == RKISP1_RAW_RGGB) {
279 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_A_MEASURED);
281 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_B_MEASURED);
283 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_C_MEASURED);
285 rkisp1_read(rkisp1, RKISP1_CIF_ISP_BLS_D_MEASURED);
290 rkisp1_stats_send_measurement(struct rkisp1_stats *stats, u32 isp_ris)
292 struct rkisp1_stat_buffer *cur_stat_buf;
293 struct rkisp1_buffer *cur_buf = NULL;
294 unsigned int frame_sequence = stats->rkisp1->isp.frame_sequence;
295 u64 timestamp = ktime_get_ns();
297 /* get one empty buffer */
298 if (!list_empty(&stats->stat)) {
299 cur_buf = list_first_entry(&stats->stat,
300 struct rkisp1_buffer, queue);
301 list_del(&cur_buf->queue);
308 (struct rkisp1_stat_buffer *)(cur_buf->vaddr);
310 if (isp_ris & RKISP1_CIF_ISP_AWB_DONE)
311 rkisp1_stats_get_awb_meas(stats, cur_stat_buf);
313 if (isp_ris & RKISP1_CIF_ISP_AFM_FIN)
314 rkisp1_stats_get_afc_meas(stats, cur_stat_buf);
316 if (isp_ris & RKISP1_CIF_ISP_EXP_END) {
317 rkisp1_stats_get_aec_meas(stats, cur_stat_buf);
318 rkisp1_stats_get_bls_meas(stats, cur_stat_buf);
321 if (isp_ris & RKISP1_CIF_ISP_HIST_MEASURE_RDY)
322 rkisp1_stats_get_hst_meas(stats, cur_stat_buf);
324 vb2_set_plane_payload(&cur_buf->vb.vb2_buf, 0,
325 sizeof(struct rkisp1_stat_buffer));
326 cur_buf->vb.sequence = frame_sequence;
327 cur_buf->vb.vb2_buf.timestamp = timestamp;
328 vb2_buffer_done(&cur_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
331 void rkisp1_stats_isr(struct rkisp1_stats *stats, u32 isp_ris)
333 struct rkisp1_device *rkisp1 = stats->rkisp1;
334 unsigned int isp_mis_tmp = 0;
336 spin_lock(&stats->lock);
338 rkisp1_write(rkisp1, RKISP1_STATS_MEAS_MASK, RKISP1_CIF_ISP_ICR);
340 isp_mis_tmp = rkisp1_read(rkisp1, RKISP1_CIF_ISP_MIS);
341 if (isp_mis_tmp & RKISP1_STATS_MEAS_MASK)
342 rkisp1->debug.stats_error++;
344 if (isp_ris & RKISP1_STATS_MEAS_MASK)
345 rkisp1_stats_send_measurement(stats, isp_ris);
347 spin_unlock(&stats->lock);
350 static void rkisp1_init_stats(struct rkisp1_stats *stats)
352 stats->vdev_fmt.fmt.meta.dataformat =
353 V4L2_META_FMT_RK_ISP1_STAT_3A;
354 stats->vdev_fmt.fmt.meta.buffersize =
355 sizeof(struct rkisp1_stat_buffer);
358 int rkisp1_stats_register(struct rkisp1_device *rkisp1)
360 struct rkisp1_stats *stats = &rkisp1->stats;
361 struct rkisp1_vdev_node *node = &stats->vnode;
362 struct video_device *vdev = &node->vdev;
365 stats->rkisp1 = rkisp1;
366 mutex_init(&node->vlock);
367 INIT_LIST_HEAD(&stats->stat);
368 spin_lock_init(&stats->lock);
370 strscpy(vdev->name, RKISP1_STATS_DEV_NAME, sizeof(vdev->name));
372 video_set_drvdata(vdev, stats);
373 vdev->ioctl_ops = &rkisp1_stats_ioctl;
374 vdev->fops = &rkisp1_stats_fops;
375 vdev->release = video_device_release_empty;
376 vdev->lock = &node->vlock;
377 vdev->v4l2_dev = &rkisp1->v4l2_dev;
378 vdev->queue = &node->buf_queue;
379 vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
380 vdev->vfl_dir = VFL_DIR_RX;
381 rkisp1_stats_init_vb2_queue(vdev->queue, stats);
382 rkisp1_init_stats(stats);
383 video_set_drvdata(vdev, stats);
385 node->pad.flags = MEDIA_PAD_FL_SINK;
386 ret = media_entity_pads_init(&vdev->entity, 1, &node->pad);
388 goto err_mutex_destroy;
390 ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
393 "failed to register %s, ret=%d\n", vdev->name, ret);
394 goto err_cleanup_media_entity;
399 err_cleanup_media_entity:
400 media_entity_cleanup(&vdev->entity);
402 mutex_destroy(&node->vlock);
406 void rkisp1_stats_unregister(struct rkisp1_device *rkisp1)
408 struct rkisp1_stats *stats = &rkisp1->stats;
409 struct rkisp1_vdev_node *node = &stats->vnode;
410 struct video_device *vdev = &node->vdev;
412 vb2_video_unregister_device(vdev);
413 media_entity_cleanup(&vdev->entity);
414 mutex_destroy(&node->vlock);