diff options
Diffstat (limited to 'drivers/staging/media/tegra-video/tegra210.c')
| -rw-r--r-- | drivers/staging/media/tegra-video/tegra210.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/drivers/staging/media/tegra-video/tegra210.c b/drivers/staging/media/tegra-video/tegra210.c index d58370a84737..da99f19a39e7 100644 --- a/drivers/staging/media/tegra-video/tegra210.c +++ b/drivers/staging/media/tegra-video/tegra210.c @@ -17,6 +17,13 @@ #include "csi.h" #include "vi.h" +#define TEGRA210_MIN_WIDTH 32U +#define TEGRA210_MAX_WIDTH 32768U +#define TEGRA210_MIN_HEIGHT 32U +#define TEGRA210_MAX_HEIGHT 32768U + +#define SURFACE_ALIGN_BYTES 64 + #define TEGRA_VI_SYNCPT_WAIT_TIMEOUT msecs_to_jiffies(200) /* Tegra210 VI registers */ @@ -172,6 +179,84 @@ static u32 vi_csi_read(struct tegra_vi_channel *chan, u8 portno, /* * Tegra210 VI channel capture operations */ + +static int tegra210_channel_host1x_syncpt_init(struct tegra_vi_channel *chan) +{ + struct tegra_vi *vi = chan->vi; + unsigned long flags = HOST1X_SYNCPT_CLIENT_MANAGED; + struct host1x_syncpt *fs_sp; + struct host1x_syncpt *mw_sp; + int ret, i; + + for (i = 0; i < chan->numgangports; i++) { + fs_sp = host1x_syncpt_request(&vi->client, flags); + if (!fs_sp) { + dev_err(vi->dev, "failed to request frame start syncpoint\n"); + ret = -ENOMEM; + goto free_syncpts; + } + + mw_sp = host1x_syncpt_request(&vi->client, flags); + if (!mw_sp) { + dev_err(vi->dev, "failed to request memory ack syncpoint\n"); + host1x_syncpt_put(fs_sp); + ret = -ENOMEM; + goto free_syncpts; + } + + chan->frame_start_sp[i] = fs_sp; + chan->mw_ack_sp[i] = mw_sp; + spin_lock_init(&chan->sp_incr_lock[i]); + } + + return 0; + +free_syncpts: + for (i = 0; i < chan->numgangports; i++) { + host1x_syncpt_put(chan->mw_ack_sp[i]); + host1x_syncpt_put(chan->frame_start_sp[i]); + } + return ret; +} + +static void tegra210_channel_host1x_syncpt_free(struct tegra_vi_channel *chan) +{ + int i; + + for (i = 0; i < chan->numgangports; i++) { + host1x_syncpt_put(chan->mw_ack_sp[i]); + host1x_syncpt_put(chan->frame_start_sp[i]); + } +} + +static void tegra210_fmt_align(struct v4l2_pix_format *pix, unsigned int bpp) +{ + unsigned int min_bpl; + unsigned int max_bpl; + unsigned int bpl; + + /* + * The transfer alignment requirements are expressed in bytes. + * Clamp the requested width and height to the limits. + */ + pix->width = clamp(pix->width, TEGRA210_MIN_WIDTH, TEGRA210_MAX_WIDTH); + pix->height = clamp(pix->height, TEGRA210_MIN_HEIGHT, TEGRA210_MAX_HEIGHT); + + /* Clamp the requested bytes per line value. If the maximum bytes per + * line value is zero, the module doesn't support user configurable + * line sizes. Override the requested value with the minimum in that + * case. + */ + min_bpl = pix->width * bpp; + max_bpl = rounddown(TEGRA210_MAX_WIDTH, SURFACE_ALIGN_BYTES); + bpl = roundup(pix->bytesperline, SURFACE_ALIGN_BYTES); + + pix->bytesperline = clamp(bpl, min_bpl, max_bpl); + pix->sizeimage = pix->bytesperline * pix->height; + if (pix->pixelformat == V4L2_PIX_FMT_NV16) + pix->sizeimage *= 2; +} + static int tegra_channel_capture_setup(struct tegra_vi_channel *chan, u8 portno) { @@ -718,6 +803,9 @@ static const struct tegra_video_format tegra210_video_formats[] = { /* Tegra210 VI operations */ static const struct tegra_vi_ops tegra210_vi_ops = { + .channel_host1x_syncpt_init = tegra210_channel_host1x_syncpt_init, + .channel_host1x_syncpt_free = tegra210_channel_host1x_syncpt_free, + .vi_fmt_align = tegra210_fmt_align, .vi_start_streaming = tegra210_vi_start_streaming, .vi_stop_streaming = tegra210_vi_stop_streaming, }; @@ -730,8 +818,10 @@ const struct tegra_vi_soc tegra210_vi_soc = { .hw_revision = 3, .vi_max_channels = 6, #if IS_ENABLED(CONFIG_VIDEO_TEGRA_TPG) + .default_video_format = &tegra210_video_formats[0], .vi_max_clk_hz = 499200000, #else + .default_video_format = &tegra210_video_formats[4], .vi_max_clk_hz = 998400000, #endif }; |