[Intel-gfx] [PATCH 14/15] drm/i915/tv: Fix >1024 modes on gen3
Imre Deak
imre.deak at intel.com
Wed Jan 23 13:49:02 UTC 2019
On Mon, Nov 12, 2018 at 06:59:59PM +0200, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala at linux.intel.com>
>
> On gen3 we must disable the TV encoder vertical filter for >1024
> pixel wide sources. Once that's done all we can is try to center
> the image on the screen. Naturally the TV mode vertical resolution
> must be equal or larger than the user mode vertical resolution
> or else we'd have to cut off part of the user mode.
>
> And while we may not be able to respect the user's choice of
> top and bottom borders exactly (or we'd have to reject he mode
> most likely), we can try to maintain the relative sizes of the
> top and bottom border with respect to each orher.
>
> Additionally we must configure the pipe as interlaced if the
> TV mode is interlaced.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> ---
> drivers/gpu/drm/i915/intel_tv.c | 100 +++++++++++++++++++++++++++++---
> 1 file changed, 92 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
> index 75126fce655d..7099d837e31a 100644
> --- a/drivers/gpu/drm/i915/intel_tv.c
> +++ b/drivers/gpu/drm/i915/intel_tv.c
> @@ -861,6 +861,44 @@ static const struct tv_mode tv_modes[] = {
> },
> };
>
> +struct intel_tv_connector_state {
> + struct drm_connector_state base;
> +
> + /*
> + * May need to override the user margins for
> + * gen3 >1024 wide source vertical centering.
> + */
> + struct {
> + u16 top, bottom;
> + } margins;
> +
> + bool bypass_vfilter;
> +};
> +
> +#define to_intel_tv_connector_state(x) container_of(x, struct intel_tv_connector_state, base)
> +
> +/**
> + * intel_digital_connector_duplicate_state - duplicate connector state
^intel_tv_connector_duplicate_state
> + * @connector: digital connector
^tv connector?
> + *
> + * Allocates and returns a copy of the connector state (both common and
> + * digital connector specific) for the specified connector.
> + *
> + * Returns: The newly allocated connector state, or NULL on failure.
> + */
> +struct drm_connector_state *
> +intel_tv_connector_duplicate_state(struct drm_connector *connector)
> +{
> + struct intel_tv_connector_state *state;
> +
> + state = kmemdup(connector->state, sizeof(*state), GFP_KERNEL);
> + if (!state)
> + return NULL;
> +
> + __drm_atomic_helper_connector_duplicate_state(connector, &state->base);
> + return &state->base;
> +}
You didn't add the corresponding checks for the new
intel_tv_connector_state fields to intel_tv_atomic_check(). I suppose
that's ok since something resulting in a change in those will force a
modeset anyway:
Reviewed-by: Imre Deak <imre.deak at intel.com>
> +
> static struct intel_tv *enc_to_tv(struct intel_encoder *encoder)
> {
> return container_of(encoder, struct intel_tv, base);
> @@ -1129,6 +1167,9 @@ intel_tv_compute_config(struct intel_encoder *encoder,
> struct intel_crtc_state *pipe_config,
> struct drm_connector_state *conn_state)
> {
> + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> + struct intel_tv_connector_state *tv_conn_state =
> + to_intel_tv_connector_state(conn_state);
> const struct tv_mode *tv_mode = intel_tv_mode_find(conn_state);
> struct drm_display_mode *adjusted_mode =
> &pipe_config->base.adjusted_mode;
> @@ -1149,6 +1190,43 @@ intel_tv_compute_config(struct intel_encoder *encoder,
> pipe_config->port_clock = tv_mode->clock;
>
> intel_tv_mode_to_mode(adjusted_mode, tv_mode);
> + drm_mode_set_crtcinfo(adjusted_mode, 0);
> +
> + if (IS_GEN3(dev_priv) && hdisplay > 1024) {
> + int extra, top, bottom;
> +
> + extra = adjusted_mode->crtc_vdisplay - vdisplay;
> +
> + if (extra < 0) {
> + DRM_DEBUG_KMS("No vertical scaling for >1024 pixel wide modes\n");
> + return false;
> + }
> +
> + /* Need to turn off the vertical filter and center the image */
> +
> + /* Attempt to maintain the relative sizes of the margins */
> + top = conn_state->tv.margins.top;
> + bottom = conn_state->tv.margins.bottom;
> +
> + if (top + bottom)
> + top = extra * top / (top + bottom);
> + else
> + top = extra / 2;
> + bottom = extra - top;
> +
> + tv_conn_state->margins.top = top;
> + tv_conn_state->margins.bottom = bottom;
> +
> + tv_conn_state->bypass_vfilter = true;
> +
> + if (!tv_mode->progressive)
> + adjusted_mode->flags |= DRM_MODE_FLAG_INTERLACE;
> + } else {
> + tv_conn_state->margins.top = conn_state->tv.margins.top;
> + tv_conn_state->margins.bottom = conn_state->tv.margins.bottom;
> +
> + tv_conn_state->bypass_vfilter = false;
> + }
>
> DRM_DEBUG_KMS("TV mode:\n");
> drm_mode_debug_printmodeline(adjusted_mode);
> @@ -1222,8 +1300,8 @@ intel_tv_compute_config(struct intel_encoder *encoder,
> conn_state->tv.margins.left,
> conn_state->tv.margins.right);
> intel_tv_scale_mode_vert(adjusted_mode, vdisplay,
> - conn_state->tv.margins.top,
> - conn_state->tv.margins.bottom);
> + tv_conn_state->margins.top,
> + tv_conn_state->margins.bottom);
> drm_mode_set_crtcinfo(adjusted_mode, 0);
> adjusted_mode->name[0] = '\0';
>
> @@ -1316,8 +1394,10 @@ static void intel_tv_pre_enable(struct intel_encoder *encoder,
> struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->base.crtc);
> struct intel_tv *intel_tv = enc_to_tv(encoder);
> + const struct intel_tv_connector_state *tv_conn_state =
> + to_intel_tv_connector_state(conn_state);
> const struct tv_mode *tv_mode = intel_tv_mode_find(conn_state);
> - u32 tv_ctl;
> + u32 tv_ctl, tv_filter_ctl;
> u32 scctl1, scctl2, scctl3;
> int i, j;
> const struct video_levels *video_levels;
> @@ -1425,16 +1505,20 @@ static void intel_tv_pre_enable(struct intel_encoder *encoder,
> assert_pipe_disabled(dev_priv, intel_crtc->pipe);
>
> /* Filter ctl must be set before TV_WIN_SIZE */
> - I915_WRITE(TV_FILTER_CTL_1, TV_AUTO_SCALE);
> + tv_filter_ctl = TV_AUTO_SCALE;
> + if (tv_conn_state->bypass_vfilter)
> + tv_filter_ctl |= TV_V_FILTER_BYPASS;
> + I915_WRITE(TV_FILTER_CTL_1, tv_filter_ctl);
> +
> xsize = tv_mode->hblank_start - tv_mode->hblank_end;
> ysize = intel_tv_mode_vdisplay(tv_mode);
>
> xpos = conn_state->tv.margins.left;
> - ypos = conn_state->tv.margins.top;
> + ypos = tv_conn_state->margins.top;
> xsize -= (conn_state->tv.margins.left +
> conn_state->tv.margins.right);
> - ysize -= (conn_state->tv.margins.top +
> - conn_state->tv.margins.bottom);
> + ysize -= (tv_conn_state->margins.top +
> + tv_conn_state->margins.bottom);
> I915_WRITE(TV_WIN_POS, (xpos<<16)|ypos);
> I915_WRITE(TV_WIN_SIZE, (xsize<<16)|ysize);
>
> @@ -1701,7 +1785,7 @@ static const struct drm_connector_funcs intel_tv_connector_funcs = {
> .destroy = intel_connector_destroy,
> .fill_modes = drm_helper_probe_single_connector_modes,
> .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> + .atomic_duplicate_state = intel_tv_connector_duplicate_state,
> };
>
> static int intel_tv_atomic_check(struct drm_connector *connector,
> --
> 2.18.1
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/intel-gfx
More information about the Intel-gfx
mailing list