[PATCH v2 08/13] staging: media: starfive: Add for StarFive ISP 3A SC

From: Changhuang Liang
Date: Thu Jan 11 2024 - 03:43:05 EST

Register ISP 3A "capture_scd" video device to receive statistics
collection data.

Signed-off-by: Changhuang Liang <changhuang.liang@xxxxxxxxxxxxxxxx>
---
.../staging/media/starfive/camss/stf-buffer.h | 1 +
.../staging/media/starfive/camss/stf-camss.c | 8 +
.../media/starfive/camss/stf-capture.c | 21 ++-
.../media/starfive/camss/stf-isp-hw-ops.c | 66 ++++++++
.../staging/media/starfive/camss/stf-isp.h | 23 +++
.../staging/media/starfive/camss/stf-video.c | 143 +++++++++++++++++-
.../staging/media/starfive/camss/stf-video.h | 1 +
7 files changed, 254 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/media/starfive/camss/stf-buffer.h b/drivers/staging/media/starfive/camss/stf-buffer.h
index 9d1670fb05ed..727d00617448 100644
--- a/drivers/staging/media/starfive/camss/stf-buffer.h
+++ b/drivers/staging/media/starfive/camss/stf-buffer.h
@@ -23,6 +23,7 @@ enum stf_v_state {
struct stfcamss_buffer {
struct vb2_v4l2_buffer vb;
dma_addr_t addr[2];
+ void *vaddr;
struct list_head queue;
};

diff --git a/drivers/staging/media/starfive/camss/stf-camss.c b/drivers/staging/media/starfive/camss/stf-camss.c
index a587f860101a..3175d0d9a05c 100644
--- a/drivers/staging/media/starfive/camss/stf-camss.c
+++ b/drivers/staging/media/starfive/camss/stf-camss.c
@@ -126,6 +126,7 @@ static int stfcamss_of_parse_ports(struct stfcamss *stfcamss)
static int stfcamss_register_devs(struct stfcamss *stfcamss)
{
struct stf_capture *cap_yuv = &stfcamss->captures[STF_CAPTURE_YUV];
+ struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];
struct stf_isp_dev *isp_dev = &stfcamss->isp_dev;
int ret;

@@ -150,6 +151,13 @@ static int stfcamss_register_devs(struct stfcamss *stfcamss)

cap_yuv->video.source_subdev = &isp_dev->subdev;

+ ret = media_create_pad_link(&isp_dev->subdev.entity, STF_ISP_PAD_SRC_SCD,
+ &cap_scd->video.vdev.entity, 0, 0);
+ if (ret)
+ goto err_cap_unregister;
+
+ cap_scd->video.source_subdev = &isp_dev->subdev;
+
return ret;

err_cap_unregister:
diff --git a/drivers/staging/media/starfive/camss/stf-capture.c b/drivers/staging/media/starfive/camss/stf-capture.c
index e91e726a1462..20c43e3f9b08 100644
--- a/drivers/staging/media/starfive/camss/stf-capture.c
+++ b/drivers/staging/media/starfive/camss/stf-capture.c
@@ -12,6 +12,7 @@
static const char * const stf_cap_names[] = {
"capture_raw",
"capture_yuv",
+ "capture_scd",
};

static const struct stfcamss_format_info stf_wr_fmts[] = {
@@ -55,6 +56,14 @@ static const struct stfcamss_format_info stf_isp_fmts[] = {
},
};

+/* 3A Statistics Collection Data */
+static const struct stfcamss_format_info stf_isp_scd_fmts[] = {
+ {
+ .code = MEDIA_BUS_FMT_METADATA_FIXED,
+ .pixelformat = V4L2_META_FMT_STF_ISP_STAT_3A,
+ },
+};
+
static inline struct stf_capture *to_stf_capture(struct stfcamss_video *video)
{
return container_of(video, struct stf_capture, video);
@@ -84,6 +93,8 @@ static void stf_init_addrs(struct stfcamss_video *video)
stf_set_raw_addr(video->stfcamss, addr0);
else if (cap->type == STF_CAPTURE_YUV)
stf_set_yuv_addr(video->stfcamss, addr0, addr1);
+ else
+ stf_set_scd_addr(video->stfcamss, addr0, addr1, TYPE_AWB);
}

static void stf_cap_s_cfg(struct stfcamss_video *video)
@@ -227,18 +238,24 @@ static void stf_capture_init(struct stfcamss *stfcamss, struct stf_capture *cap)
INIT_LIST_HEAD(&cap->buffers.ready_bufs);
spin_lock_init(&cap->buffers.lock);

- cap->video.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cap->video.stfcamss = stfcamss;
cap->video.bpl_alignment = 16 * 8;

if (cap->type == STF_CAPTURE_RAW) {
+ cap->video.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cap->video.formats = stf_wr_fmts;
cap->video.nformats = ARRAY_SIZE(stf_wr_fmts);
cap->video.bpl_alignment = 8;
} else if (cap->type == STF_CAPTURE_YUV) {
+ cap->video.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
cap->video.formats = stf_isp_fmts;
cap->video.nformats = ARRAY_SIZE(stf_isp_fmts);
cap->video.bpl_alignment = 1;
+ } else {
+ cap->video.type = V4L2_BUF_TYPE_META_CAPTURE;
+ cap->video.formats = stf_isp_scd_fmts;
+ cap->video.nformats = ARRAY_SIZE(stf_isp_scd_fmts);
+ cap->video.bpl_alignment = 16 * 8;
}
}

@@ -362,9 +379,11 @@ void stf_capture_unregister(struct stfcamss *stfcamss)
{
struct stf_capture *cap_raw = &stfcamss->captures[STF_CAPTURE_RAW];
struct stf_capture *cap_yuv = &stfcamss->captures[STF_CAPTURE_YUV];
+ struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];

stf_capture_unregister_one(cap_raw);
stf_capture_unregister_one(cap_yuv);
+ stf_capture_unregister_one(cap_scd);
}

int stf_capture_register(struct stfcamss *stfcamss,
diff --git a/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c b/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c
index 6b3966ca18bf..ae88668e5798 100644
--- a/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c
+++ b/drivers/staging/media/starfive/camss/stf-isp-hw-ops.c
@@ -451,11 +451,57 @@ void stf_set_yuv_addr(struct stfcamss *stfcamss,
stf_isp_reg_write(stfcamss, ISP_REG_UV_PLANE_START_ADDR, uv_addr);
}

+static enum stf_isp_type_scd stf_get_isp_scd_type(struct stfcamss *stfcamss)
+{
+ int val;
+
+ val = stf_isp_reg_read(stfcamss, ISP_REG_SC_CFG_1);
+ return (enum stf_isp_type_scd)(val & ISP_SC_SEL_MASK) >> 30;
+}
+
+void stf_set_scd_addr(struct stfcamss *stfcamss,
+ dma_addr_t yhist_addr, dma_addr_t scd_addr,
+ enum stf_isp_type_scd type_scd)
+{
+ stf_isp_reg_set_bit(stfcamss, ISP_REG_SC_CFG_1, ISP_SC_SEL_MASK,
+ SEL_TYPE(type_scd));
+ stf_isp_reg_write(stfcamss, ISP_REG_SCD_CFG_0, scd_addr);
+ stf_isp_reg_write(stfcamss, ISP_REG_YHIST_CFG_4, yhist_addr);
+}
+
+static void stf_isp_fill_yhist(struct stfcamss *stfcamss, void *vaddr)
+{
+ struct jh7110_isp_sc_buffer *sc = (struct jh7110_isp_sc_buffer *)vaddr;
+ u32 reg_addr = ISP_REG_YHIST_ACC_0;
+ u32 i;
+
+ for (i = 0; i < 64; i++, reg_addr += 4)
+ sc->y_histogram[i] = stf_isp_reg_read(stfcamss, reg_addr);
+}
+
+static void stf_isp_fill_flag(struct stfcamss *stfcamss, void *vaddr,
+ enum stf_isp_type_scd *type_scd)
+{
+ struct jh7110_isp_sc_buffer *sc = (struct jh7110_isp_sc_buffer *)vaddr;
+
+ *type_scd = stf_get_isp_scd_type(stfcamss);
+ if (*type_scd == TYPE_AWB) {
+ sc->flag = JH7110_ISP_SC_FALG_AWB;
+ *type_scd = TYPE_OECF;
+ } else {
+ sc->flag = JH7110_ISP_SC_FALG_AE_AF;
+ *type_scd = TYPE_AWB;
+ }
+}
+
irqreturn_t stf_line_irq_handler(int irq, void *priv)
{
struct stfcamss *stfcamss = priv;
struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_YUV];
+ struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];
struct stfcamss_buffer *change_buf;
+ enum stf_isp_type_scd type_scd;
+ u32 value;
u32 status;

status = stf_isp_reg_read(stfcamss, ISP_REG_ISP_CTRL_0);
@@ -467,6 +513,17 @@ irqreturn_t stf_line_irq_handler(int irq, void *priv)
stf_set_yuv_addr(stfcamss, change_buf->addr[0],
change_buf->addr[1]);
}
+
+ value = stf_isp_reg_read(stfcamss, ISP_REG_CSI_MODULE_CFG);
+ if (value & CSI_SC_EN) {
+ change_buf = stf_change_buffer(&cap_scd->buffers);
+ if (change_buf) {
+ stf_isp_fill_flag(stfcamss, change_buf->vaddr,
+ &type_scd);
+ stf_set_scd_addr(stfcamss, change_buf->addr[0],
+ change_buf->addr[1], type_scd);
+ }
+ }
}

stf_isp_reg_set_bit(stfcamss, ISP_REG_CSIINTS,
@@ -485,6 +542,7 @@ irqreturn_t stf_isp_irq_handler(int irq, void *priv)
{
struct stfcamss *stfcamss = priv;
struct stf_capture *cap = &stfcamss->captures[STF_CAPTURE_YUV];
+ struct stf_capture *cap_scd = &stfcamss->captures[STF_CAPTURE_SCD];
struct stfcamss_buffer *ready_buf;
u32 status;

@@ -496,6 +554,14 @@ irqreturn_t stf_isp_irq_handler(int irq, void *priv)
vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
}

+ if (status & ISPC_SC) {
+ ready_buf = stf_buf_done(&cap_scd->buffers);
+ if (ready_buf) {
+ stf_isp_fill_yhist(stfcamss, ready_buf->vaddr);
+ vb2_buffer_done(&ready_buf->vb.vb2_buf, VB2_BUF_STATE_DONE);
+ }
+ }
+
stf_isp_reg_write(stfcamss, ISP_REG_ISP_CTRL_0,
(status & ~ISPC_INT_ALL_MASK) |
ISPC_ISP | ISPC_CSI | ISPC_SC);
diff --git a/drivers/staging/media/starfive/camss/stf-isp.h b/drivers/staging/media/starfive/camss/stf-isp.h
index fcda0502e3b0..0af7b367e57a 100644
--- a/drivers/staging/media/starfive/camss/stf-isp.h
+++ b/drivers/staging/media/starfive/camss/stf-isp.h
@@ -10,6 +10,7 @@
#ifndef STF_ISP_H
#define STF_ISP_H

+#include <linux/jh7110-isp.h>
#include <media/v4l2-subdev.h>

#include "stf-video.h"
@@ -107,6 +108,12 @@
#define Y_COOR(y) ((y) << 16)
#define X_COOR(x) ((x) << 0)

+#define ISP_REG_SCD_CFG_0 0x098
+
+#define ISP_REG_SC_CFG_1 0x0bc
+#define ISP_SC_SEL_MASK GENMASK(31, 30)
+#define SEL_TYPE(n) ((n) << 30)
+
#define ISP_REG_LCCF_CFG_2 0x0e0
#define ISP_REG_LCCF_CFG_3 0x0e4
#define ISP_REG_LCCF_CFG_4 0x0e8
@@ -305,6 +312,10 @@
#define DNRM_F(n) ((n) << 16)
#define CCM_M_DAT(n) ((n) << 0)

+#define ISP_REG_YHIST_CFG_4 0xcd8
+
+#define ISP_REG_YHIST_ACC_0 0xd00
+
#define ISP_REG_GAMMA_VAL0 0xe00
#define ISP_REG_GAMMA_VAL1 0xe04
#define ISP_REG_GAMMA_VAL2 0xe08
@@ -389,6 +400,15 @@
#define IMAGE_MAX_WIDTH 1920
#define IMAGE_MAX_HEIGH 1080

+#define ISP_YHIST_BUFFER_SIZE (64 * sizeof(__u32))
+
+enum stf_isp_type_scd {
+ TYPE_DEC = 0,
+ TYPE_OBC,
+ TYPE_OECF,
+ TYPE_AWB,
+};
+
/* pad id for media framework */
enum stf_isp_pad_id {
STF_ISP_PAD_SINK = 0,
@@ -429,5 +449,8 @@ int stf_isp_unregister(struct stf_isp_dev *isp_dev);

void stf_set_yuv_addr(struct stfcamss *stfcamss,
dma_addr_t y_addr, dma_addr_t uv_addr);
+void stf_set_scd_addr(struct stfcamss *stfcamss,
+ dma_addr_t yhist_addr, dma_addr_t scd_addr,
+ enum stf_isp_type_scd type_scd);

#endif /* STF_ISP_H */
diff --git a/drivers/staging/media/starfive/camss/stf-video.c b/drivers/staging/media/starfive/camss/stf-video.c
index 989b5e82bae9..d9e51d4e2004 100644
--- a/drivers/staging/media/starfive/camss/stf-video.c
+++ b/drivers/staging/media/starfive/camss/stf-video.c
@@ -125,6 +125,14 @@ static int stf_video_init_format(struct stfcamss_video *video)
return 0;
}

+static int stf_video_scd_init_format(struct stfcamss_video *video)
+{
+ video->active_fmt.fmt.meta.dataformat = video->formats[0].pixelformat;
+ video->active_fmt.fmt.meta.buffersize = sizeof(struct jh7110_isp_sc_buffer);
+
+ return 0;
+}
+
/* -----------------------------------------------------------------------------
* Video queue operations
*/
@@ -330,6 +338,75 @@ static const struct vb2_ops stf_video_vb2_q_ops = {
.stop_streaming = video_stop_streaming,
};

+static int video_scd_queue_setup(struct vb2_queue *q,
+ unsigned int *num_buffers,
+ unsigned int *num_planes,
+ unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ *num_planes = 1;
+ sizes[0] = sizeof(struct jh7110_isp_sc_buffer);
+
+ return 0;
+}
+
+static int video_scd_buf_init(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct stfcamss_buffer *buffer = to_stfcamss_buffer(vbuf);
+ dma_addr_t *paddr;
+
+ paddr = vb2_plane_cookie(vb, 0);
+ buffer->addr[0] = *paddr;
+ buffer->addr[1] = buffer->addr[0] + ISP_YHIST_BUFFER_SIZE;
+ buffer->vaddr = vb2_plane_vaddr(vb, 0);
+
+ return 0;
+}
+
+static int video_scd_buf_prepare(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+
+ if (sizeof(struct jh7110_isp_sc_buffer) > vb2_plane_size(vb, 0))
+ return -EINVAL;
+
+ vb2_set_plane_payload(vb, 0, sizeof(struct jh7110_isp_sc_buffer));
+
+ vbuf->field = V4L2_FIELD_NONE;
+
+ return 0;
+}
+
+static int video_scd_start_streaming(struct vb2_queue *q, unsigned int count)
+{
+ struct stfcamss_video *video = vb2_get_drv_priv(q);
+
+ video->ops->start_streaming(video);
+
+ return 0;
+}
+
+static void video_scd_stop_streaming(struct vb2_queue *q)
+{
+ struct stfcamss_video *video = vb2_get_drv_priv(q);
+
+ video->ops->stop_streaming(video);
+
+ video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
+}
+
+static const struct vb2_ops stf_video_scd_vb2_q_ops = {
+ .queue_setup = video_scd_queue_setup,
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .buf_init = video_scd_buf_init,
+ .buf_prepare = video_scd_buf_prepare,
+ .buf_queue = video_buf_queue,
+ .start_streaming = video_scd_start_streaming,
+ .stop_streaming = video_scd_stop_streaming,
+};
+
/* -----------------------------------------------------------------------------
* V4L2 ioctls
*/
@@ -448,6 +525,37 @@ static const struct v4l2_ioctl_ops stf_vid_ioctl_ops = {
.vidioc_streamoff = vb2_ioctl_streamoff,
};

+static int video_scd_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
+{
+ struct stfcamss_video *video = video_drvdata(file);
+ struct v4l2_meta_format *meta = &f->fmt.meta;
+
+ if (f->type != video->type)
+ return -EINVAL;
+
+ meta->dataformat = video->active_fmt.fmt.meta.dataformat;
+ meta->buffersize = video->active_fmt.fmt.meta.buffersize;
+
+ return 0;
+}
+
+static const struct v4l2_ioctl_ops stf_vid_scd_ioctl_ops = {
+ .vidioc_querycap = video_querycap,
+ .vidioc_enum_fmt_meta_cap = video_enum_fmt,
+ .vidioc_g_fmt_meta_cap = video_scd_g_fmt,
+ .vidioc_s_fmt_meta_cap = video_scd_g_fmt,
+ .vidioc_try_fmt_meta_cap = video_scd_g_fmt,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+};
+
/* -----------------------------------------------------------------------------
* V4L2 file operations
*/
@@ -473,6 +581,9 @@ static int stf_link_validate(struct media_link *link)
struct stfcamss_video *video = video_get_drvdata(vdev);
int ret;

+ if (video->type == V4L2_BUF_TYPE_META_CAPTURE)
+ return 0;
+
ret = stf_video_check_format(video);

return ret;
@@ -506,7 +617,11 @@ int stf_video_register(struct stfcamss_video *video,
q = &video->vb2_q;
q->drv_priv = video;
q->mem_ops = &vb2_dma_contig_memops;
- q->ops = &stf_video_vb2_q_ops;
+
+ if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ q->ops = &stf_video_vb2_q_ops;
+ else
+ q->ops = &stf_video_scd_vb2_q_ops;
q->type = video->type;
q->io_modes = VB2_DMABUF | VB2_MMAP;
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
@@ -529,16 +644,28 @@ int stf_video_register(struct stfcamss_video *video,
goto err_mutex_destroy;
}

- ret = stf_video_init_format(video);
- if (ret < 0) {
- dev_err(video->stfcamss->dev,
- "Failed to init format: %d\n", ret);
- goto err_media_cleanup;
+ if (video->type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
+ ret = stf_video_init_format(video);
+ if (ret < 0) {
+ dev_err(video->stfcamss->dev,
+ "Failed to init format: %d\n", ret);
+ goto err_media_cleanup;
+ }
+ vdev->ioctl_ops = &stf_vid_ioctl_ops;
+ vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE;
+ } else {
+ ret = stf_video_scd_init_format(video);
+ if (ret < 0) {
+ dev_err(video->stfcamss->dev,
+ "Failed to init format: %d\n", ret);
+ goto err_media_cleanup;
+ }
+ vdev->ioctl_ops = &stf_vid_scd_ioctl_ops;
+ vdev->device_caps = V4L2_CAP_META_CAPTURE;
}

vdev->fops = &stf_vid_fops;
- vdev->ioctl_ops = &stf_vid_ioctl_ops;
- vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ vdev->device_caps |= V4L2_CAP_STREAMING;
vdev->entity.ops = &stf_media_ops;
vdev->vfl_dir = VFL_DIR_RX;
vdev->release = stf_video_release;
diff --git a/drivers/staging/media/starfive/camss/stf-video.h b/drivers/staging/media/starfive/camss/stf-video.h
index 59799b65cbe5..53a1cf4e59b7 100644
--- a/drivers/staging/media/starfive/camss/stf-video.h
+++ b/drivers/staging/media/starfive/camss/stf-video.h
@@ -37,6 +37,7 @@ enum stf_v_line_id {
enum stf_capture_type {
STF_CAPTURE_RAW = 0,
STF_CAPTURE_YUV,
+ STF_CAPTURE_SCD,
STF_CAPTURE_NUM,
};

--
2.25.1