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drm: mali-dp: Add CTM support

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All DPs have a COLORADJ matrix which is applied prior to output gamma.
Attach that to the CTM property. Also, ensure the input CTM's coefficients
can fit in the DP registers' Q3.12 format.

Signed-off-by: Mihail Atanassov <mihail.atanassov@arm.com>
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
This commit is contained in:
Mihail Atanassov
2017-02-13 12:49:03 +00:00
committed by Liviu Dudau
parent 02725d3137
commit 6954f24588
5 changed files with 98 additions and 4 deletions
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35
drivers/gpu/drm/arm/malidp_drv.c
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@@ -79,6 +79,37 @@ static void malidp_atomic_commit_update_gamma(struct drm_crtc *crtc,
}
}
static
void malidp_atomic_commit_update_coloradj(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
struct malidp_drm *malidp = crtc_to_malidp_device(crtc);
struct malidp_hw_device *hwdev = malidp->dev;
int i;
if (!crtc->state->color_mgmt_changed)
return;
if (!crtc->state->ctm) {
malidp_hw_clearbits(hwdev, MALIDP_DISP_FUNC_CADJ,
MALIDP_DE_DISPLAY_FUNC);
} else {
struct malidp_crtc_state *mc =
to_malidp_crtc_state(crtc->state);
if (!old_state->ctm || (crtc->state->ctm->base.id !=
old_state->ctm->base.id))
for (i = 0; i < MALIDP_COLORADJ_NUM_COEFFS; ++i)
malidp_hw_write(hwdev,
mc->coloradj_coeffs[i],
hwdev->map.coeffs_base +
MALIDP_COLOR_ADJ_COEF + 4 * i);
malidp_hw_setbits(hwdev, MALIDP_DISP_FUNC_CADJ,
MALIDP_DE_DISPLAY_FUNC);
}
}
/*
* set the "config valid" bit and wait until the hardware acts on it
*/
@@ -145,8 +176,10 @@ static void malidp_atomic_commit_tail(struct drm_atomic_state *state)
drm_atomic_helper_commit_modeset_disables(drm, state);
for_each_crtc_in_state(state, crtc, old_crtc_state, i)
for_each_crtc_in_state(state, crtc, old_crtc_state, i) {
malidp_atomic_commit_update_gamma(crtc, old_crtc_state);
malidp_atomic_commit_update_coloradj(crtc, old_crtc_state);
}
drm_atomic_helper_commit_planes(drm, state, 0);