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media: ti-vpe: cal: Use CAMERARX subdev s_stream op in video device code 

Replace calls to cal_camerarx_start() and cal_camerarx_stop() with usage
of the .s_stream() subdev operation. This requires calling the
.set_fmt() operation as the CAMERARX now relies on the format
information set through the subdev API instead of receiving it in the
cal_camerarx_start() function.

This change prepare for exposing the CAMERARX subdev operations to
userspace by using the same API within the kernel.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Benoit Parrot <bparrot@ti.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Laurent Pinchart 2020-12-07 00:53:37 +01:00 committed by Mauro Carvalho Chehab
parent 8d6637f108
commit cc548febd2
3 changed files with 21 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
drivers/media/platform/ti-vpe/cal-camerarx.c
View File

@ -116,8 +116,7 @@ void cal_camerarx_disable(struct cal_camerarx *phy)
#define TCLK_MISS 1
#define TCLK_SETTLE 14
static void cal_camerarx_config(struct cal_camerarx *phy, s64 external_rate,
const struct cal_fmt *fmt)
static void cal_camerarx_config(struct cal_camerarx *phy, s64 external_rate)
{
unsigned int reg0, reg1;
unsigned int ths_term, ths_settle;
@ -132,9 +131,9 @@ static void cal_camerarx_config(struct cal_camerarx *phy, s64 external_rate,
* CSI-2 is DDR and we only count used lanes.
*
* csi2_ddrclk_khz = external_rate / 1000
* / (2 * num_lanes) * fmt->bpp;
* / (2 * num_lanes) * phy->fmtinfo->bpp;
*/
csi2_ddrclk_khz = div_s64(external_rate * fmt->bpp,
csi2_ddrclk_khz = div_s64(external_rate * phy->fmtinfo->bpp,
2 * num_lanes * 1000);
phy_dbg(1, phy, "csi2_ddrclk_khz: %d\n", csi2_ddrclk_khz);
@ -234,7 +233,7 @@ static void cal_camerarx_wait_stop_state(struct cal_camerarx *phy)
phy_err(phy, "Timeout waiting for stop state\n");
}
int cal_camerarx_start(struct cal_camerarx *phy, const struct cal_fmt *fmt)
static int cal_camerarx_start(struct cal_camerarx *phy)
{
s64 external_rate;
u32 sscounter;
@ -289,7 +288,7 @@ int cal_camerarx_start(struct cal_camerarx *phy, const struct cal_fmt *fmt)
camerarx_read(phy, CAL_CSI2_PHY_REG0);
/* Program the PHY timing parameters. */
cal_camerarx_config(phy, external_rate, fmt);
cal_camerarx_config(phy, external_rate);
/*
* b. Assert the FORCERXMODE signal.
@ -362,7 +361,7 @@ int cal_camerarx_start(struct cal_camerarx *phy, const struct cal_fmt *fmt)
return 0;
}
void cal_camerarx_stop(struct cal_camerarx *phy)
static void cal_camerarx_stop(struct cal_camerarx *phy)
{
unsigned int i;
int ret;
@ -629,7 +628,7 @@ static int cal_camerarx_sd_s_stream(struct v4l2_subdev *sd, int enable)
struct cal_camerarx *phy = to_cal_camerarx(sd);
if (enable)
return cal_camerarx_start(phy, NULL);
return cal_camerarx_start(phy);
cal_camerarx_stop(phy);
return 0;

25
drivers/media/platform/ti-vpe/cal-video.c
View File

@ -256,8 +256,11 @@ static int cal_s_fmt_vid_cap(struct file *file, void *priv,
{
struct cal_ctx *ctx = video_drvdata(file);
struct vb2_queue *q = &ctx->vb_vidq;
struct v4l2_subdev_format sd_fmt = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
.pad = CAL_CAMERARX_PAD_SINK,
};
const struct cal_fmt *fmt;
struct v4l2_mbus_framefmt mbus_fmt;
int ret;
if (vb2_is_busy(q)) {
@ -271,25 +274,28 @@ static int cal_s_fmt_vid_cap(struct file *file, void *priv,
fmt = find_format_by_pix(ctx, f->fmt.pix.pixelformat);
v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
v4l2_fill_mbus_format(&sd_fmt.format, &f->fmt.pix, fmt->code);
ret = __subdev_set_format(ctx, &mbus_fmt);
ret = __subdev_set_format(ctx, &sd_fmt.format);
if (ret)
return ret;
/* Just double check nothing has gone wrong */
if (mbus_fmt.code != fmt->code) {
if (sd_fmt.format.code != fmt->code) {
ctx_dbg(3, ctx,
"%s subdev changed format on us, this should not happen\n",
__func__);
return -EINVAL;
}
v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &mbus_fmt);
v4l2_fill_pix_format(&ctx->v_fmt.fmt.pix, &sd_fmt.format);
ctx->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
ctx->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
ctx->v_fmt.fmt.pix.field = mbus_fmt.field;
ctx->v_fmt.fmt.pix.field = sd_fmt.format.field;
cal_calc_format_size(ctx, fmt, &ctx->v_fmt);
v4l2_subdev_call(&ctx->phy->subdev, pad, set_fmt, NULL, &sd_fmt);
ctx->fmt = fmt;
*f = ctx->v_fmt;
@ -455,9 +461,6 @@ static int cal_buffer_prepare(struct vb2_buffer *vb)
vb.vb2_buf);
unsigned long size;
if (WARN_ON(!ctx->fmt))
return -EINVAL;
size = ctx->v_fmt.fmt.pix.sizeimage;
if (vb2_plane_size(vb, 0) < size) {
ctx_err(ctx,
@ -518,7 +521,7 @@ static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
cal_camerarx_enable_irqs(ctx->phy);
ret = cal_camerarx_start(ctx->phy, ctx->fmt);
ret = v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 1);
if (ret)
goto err;
@ -569,7 +572,7 @@ static void cal_stop_streaming(struct vb2_queue *vq)
ctx_err(ctx, "failed to disable dma cleanly\n");
cal_camerarx_disable_irqs(ctx->phy);
cal_camerarx_stop(ctx->phy);
v4l2_subdev_call(&ctx->phy->subdev, video, s_stream, 0);
/* Release all active buffers */
spin_lock_irqsave(&ctx->slock, flags);

2
drivers/media/platform/ti-vpe/cal.h
View File

@ -262,8 +262,6 @@ const struct cal_fmt *cal_format_by_code(u32 code);
void cal_quickdump_regs(struct cal_dev *cal);
void cal_camerarx_disable(struct cal_camerarx *phy);
int cal_camerarx_start(struct cal_camerarx *phy, const struct cal_fmt *fmt);
void cal_camerarx_stop(struct cal_camerarx *phy);
void cal_camerarx_enable_irqs(struct cal_camerarx *phy);
void cal_camerarx_disable_irqs(struct cal_camerarx *phy);
void cal_camerarx_ppi_enable(struct cal_camerarx *phy);