> On July 6, 2019 at 4:07 PM Jacopo Mondi <jacopo+renesas@xxxxxxxxxx> wrote:
>
>
> Update CMM settings at in the atomic commit tail helper method.
>
> The CMM is updated with new gamma values provided to the driver
> in the GAMMA_LUT blob property.
>
> Signed-off-by: Jacopo Mondi <jacopo+renesas@xxxxxxxxxx>
> ---
> drivers/gpu/drm/rcar-du/rcar_du_kms.c | 35 +++++++++++++++++++++++++++
> 1 file changed, 35 insertions(+)
>
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> index b79cda2f5531..f9aece78ca5f 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> @@ -21,6 +21,7 @@
> #include <linux/of_platform.h>
> #include <linux/wait.h>
>
> +#include "rcar_cmm.h"
> #include "rcar_du_crtc.h"
> #include "rcar_du_drv.h"
> #include "rcar_du_encoder.h"
> @@ -287,6 +288,37 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
> * Atomic Check and Update
> */
>
> +static void rcar_du_atomic_commit_update_cmm(struct drm_crtc *crtc,
> + struct drm_crtc_state *old_state)
> +{
> + struct rcar_du_crtc *rcrtc = to_rcar_crtc(crtc);
> + struct rcar_cmm_config cmm_config = {};
> +
> + if (!rcrtc->cmm || !crtc->state->color_mgmt_changed)
> + return;
> +
> + if (!crtc->state->gamma_lut) {
> + cmm_config.lut.enable = false;
> + rcar_cmm_setup(rcrtc->cmm, &cmm_config);
> +
> + return;
> + }
> +
> + cmm_config.lut.enable = true;
> + cmm_config.lut.table = (struct drm_color_lut *)
> + crtc->state->gamma_lut->data;
> +
> + /* Set LUT table size to 0 if entries should not be updated. */
> + if (!old_state->gamma_lut ||
> + old_state->gamma_lut->base.id != crtc->state->gamma_lut->base.id)
> + cmm_config.lut.size = crtc->state->gamma_lut->length
> + / sizeof(cmm_config.lut.table[0]);
> + else
> + cmm_config.lut.size = 0;
> +
> + rcar_cmm_setup(rcrtc->cmm, &cmm_config);
> +}
> +
> static int rcar_du_atomic_check(struct drm_device *dev,
> struct drm_atomic_state *state)
> {
> @@ -329,6 +361,9 @@ static void rcar_du_atomic_commit_tail(struct drm_atomic_state *old_state)
> rcdu->dpad1_source = rcrtc->index;
> }
>
> + for_each_old_crtc_in_state(old_state, crtc, crtc_state, i)
> + rcar_du_atomic_commit_update_cmm(crtc, crtc_state);
> +
> /* Apply the atomic update. */
> drm_atomic_helper_commit_modeset_disables(dev, old_state);
> drm_atomic_helper_commit_planes(dev, old_state,
> --
> 2.21.0
>
Reviewed-by: Ulrich Hecht <uli+renesas@xxxxxxxx>
CU
Uli
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