Hi,
On Wed, Jan 09, 2019 at 02:13:47PM +0000, Robert Chiras wrote:
> From: Mirela Rabulea <mirela.rabulea@xxxxxxx>
>
> Add mxsfb_atomic_helper_check to signal mode changed when bpp changed.
> This will trigger the execution of disable/enable on
> a modeset with different bpp than the current one.
>
> Signed-off-by: Mirela Rabulea <mirela.rabulea@xxxxxxx>
> ---
> drivers/gpu/drm/mxsfb/mxsfb_drv.c | 48 ++++++++++++++++++++++++++++++++++++++-
> 1 file changed, 47 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> index d3fb3a8..f528a37 100644
> --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
> @@ -115,9 +115,55 @@ void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb)
> clk_disable_unprepare(mxsfb->clk_axi);
> }
>
> +/**
> + * mxsfb_atomic_helper_check - validate state object
> + * @dev: DRM device
> + * @state: the driver state object
> + *
> + * On top of the drm imlementation drm_atomic_helper_check,
> + * check if the bpp is changed, if so, signal mode_changed,
> + * this will trigger disable/enable
> + *
> + * RETURNS:
> + * Zero for success or -errno
> + */
> +static int mxsfb_atomic_helper_check(struct drm_device *dev,
> + struct drm_atomic_state *state)
> +{
> + struct drm_crtc *crtc;
> + struct drm_crtc_state *crtc_state;
> + int i, ret;
> +
> + ret = drm_atomic_helper_check(dev, state);
> + if (ret)
> + return ret;
> +
> + for_each_crtc_in_state(state, crtc, crtc_state, i) {
This does not exist anymore in recent drm, see
9ba29fcb76a559078491adffc74f66bf92b9dbea.
Cheers,
-- Guido
> + struct drm_plane_state *primary_state;
> + int old_bpp = 0;
> + int new_bpp = 0;
> +
> + if (!crtc->primary || !crtc->primary->old_fb)
> + continue;
> + primary_state =
> + drm_atomic_get_plane_state(state, crtc->primary);
> + if (!primary_state || !primary_state->fb)
> + continue;
> + old_bpp = crtc->primary->old_fb->format->depth;
> + new_bpp = primary_state->fb->format->depth;
> + if (old_bpp != new_bpp) {
> + crtc_state->mode_changed = true;
> + DRM_DEBUG_ATOMIC(
> + "[CRTC:%d:%s] mode changed, bpp %d->%d\n",
> + crtc->base.id, crtc->name, old_bpp, new_bpp);
> + }
> + }
> + return ret;
> +}
> +
> static const struct drm_mode_config_funcs mxsfb_mode_config_funcs = {
> .fb_create = drm_gem_fb_create,
> - .atomic_check = drm_atomic_helper_check,
> + .atomic_check = mxsfb_atomic_helper_check,
> .atomic_commit = drm_atomic_helper_commit,
> };
>
> --
> 2.7.4
>
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