| Message ID | 20220817132803.85373-2-tomi.valkeinen@ideasonboard.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/3] drm: rcar-du: remove unnecessary include | expand |
Hi Tomi, Thank you for the patch. On Wed, Aug 17, 2022 at 04:28:02PM +0300, Tomi Valkeinen wrote: > From: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> > > The rcar DU driver on r8a779a0 has a bug causing some specific colors > getting converted to transparent colors, which then (usually) show as > black pixels on the screen. > > The reason seems to be that the driver sets PnMR_SPIM_ALP bit in > PnMR.SPIM field, which is an illegal setting on r8a779a0. The > PnMR_SPIM_EOR bit also illegal. > > Add a new feature flag for this (lack of a) feature and make sure the > bits are zero on r8a779a0. Good catch ! > Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com> > --- > drivers/gpu/drm/rcar-du/rcar_du_drv.c | 3 ++- > drivers/gpu/drm/rcar-du/rcar_du_drv.h | 1 + > drivers/gpu/drm/rcar-du/rcar_du_plane.c | 16 +++++++++++++--- > 3 files changed, 16 insertions(+), 4 deletions(-) > > diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c > index 541c202c993a..a2776f1d6f2c 100644 > --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c > +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c > @@ -506,7 +506,8 @@ static const struct rcar_du_device_info rcar_du_r8a7799x_info = { > static const struct rcar_du_device_info rcar_du_r8a779a0_info = { > .gen = 3, > .features = RCAR_DU_FEATURE_CRTC_IRQ > - | RCAR_DU_FEATURE_VSP1_SOURCE, > + | RCAR_DU_FEATURE_VSP1_SOURCE > + | RCAR_DU_FEATURE_NO_BLENDING, > .channels_mask = BIT(1) | BIT(0), > .routes = { > /* R8A779A0 has two MIPI DSI outputs. */ > diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h > index bfad7775d9a1..712389c7b3d0 100644 > --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h > +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h > @@ -31,6 +31,7 @@ struct rcar_du_device; > #define RCAR_DU_FEATURE_VSP1_SOURCE BIT(2) /* Has inputs from VSP1 */ > #define RCAR_DU_FEATURE_INTERLACED BIT(3) /* HW supports interlaced */ > #define RCAR_DU_FEATURE_TVM_SYNC BIT(4) /* Has TV switch/sync modes */ > +#define RCAR_DU_FEATURE_NO_BLENDING BIT(5) /* PnMR.SPIM does not have ALP nor EOR bits */ > > #define RCAR_DU_QUIRK_ALIGN_128B BIT(0) /* Align pitches to 128 bytes */ > > diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c > index 9e1f0cbbf642..2103816807cc 100644 > --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c > +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c > @@ -506,8 +506,19 @@ static void rcar_du_plane_setup_format_gen3(struct rcar_du_group *rgrp, > unsigned int index, > const struct rcar_du_plane_state *state) > { > - rcar_du_plane_write(rgrp, index, PnMR, > - PnMR_SPIM_TP_OFF | state->format->pnmr); > + struct rcar_du_device *rcdu = rgrp->dev; > + u32 pnmr; > + > + pnmr = state->format->pnmr; > + > + if (rcdu->info->features & RCAR_DU_FEATURE_NO_BLENDING) { > + /* No blending. ALP and EOR are not supported */ > + pnmr &= ~(PnMR_SPIM_ALP | PnMR_SPIM_EOR); > + } > + > + pnmr |= PnMR_SPIM_TP_OFF; I'd combine this with the initial pnmr assignment. I can handle this when applying, no need to resubmit. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > + > + rcar_du_plane_write(rgrp, index, PnMR, pnmr); > > rcar_du_plane_write(rgrp, index, PnDDCR4, > state->format->edf | PnDDCR4_CODE); > @@ -521,7 +532,6 @@ static void rcar_du_plane_setup_format_gen3(struct rcar_du_group *rgrp, > * register to 0 to avoid this. > */ > > - /* TODO: Check if alpha-blending should be disabled in PnMR. */ > rcar_du_plane_write(rgrp, index, PnALPHAR, 0); > }
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index 541c202c993a..a2776f1d6f2c 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c @@ -506,7 +506,8 @@ static const struct rcar_du_device_info rcar_du_r8a7799x_info = { static const struct rcar_du_device_info rcar_du_r8a779a0_info = { .gen = 3, .features = RCAR_DU_FEATURE_CRTC_IRQ - | RCAR_DU_FEATURE_VSP1_SOURCE, + | RCAR_DU_FEATURE_VSP1_SOURCE + | RCAR_DU_FEATURE_NO_BLENDING, .channels_mask = BIT(1) | BIT(0), .routes = { /* R8A779A0 has two MIPI DSI outputs. */ diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h b/drivers/gpu/drm/rcar-du/rcar_du_drv.h index bfad7775d9a1..712389c7b3d0 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h @@ -31,6 +31,7 @@ struct rcar_du_device; #define RCAR_DU_FEATURE_VSP1_SOURCE BIT(2) /* Has inputs from VSP1 */ #define RCAR_DU_FEATURE_INTERLACED BIT(3) /* HW supports interlaced */ #define RCAR_DU_FEATURE_TVM_SYNC BIT(4) /* Has TV switch/sync modes */ +#define RCAR_DU_FEATURE_NO_BLENDING BIT(5) /* PnMR.SPIM does not have ALP nor EOR bits */ #define RCAR_DU_QUIRK_ALIGN_128B BIT(0) /* Align pitches to 128 bytes */ diff --git a/drivers/gpu/drm/rcar-du/rcar_du_plane.c b/drivers/gpu/drm/rcar-du/rcar_du_plane.c index 9e1f0cbbf642..2103816807cc 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_plane.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_plane.c @@ -506,8 +506,19 @@ static void rcar_du_plane_setup_format_gen3(struct rcar_du_group *rgrp, unsigned int index, const struct rcar_du_plane_state *state) { - rcar_du_plane_write(rgrp, index, PnMR, - PnMR_SPIM_TP_OFF | state->format->pnmr); + struct rcar_du_device *rcdu = rgrp->dev; + u32 pnmr; + + pnmr = state->format->pnmr; + + if (rcdu->info->features & RCAR_DU_FEATURE_NO_BLENDING) { + /* No blending. ALP and EOR are not supported */ + pnmr &= ~(PnMR_SPIM_ALP | PnMR_SPIM_EOR); + } + + pnmr |= PnMR_SPIM_TP_OFF; + + rcar_du_plane_write(rgrp, index, PnMR, pnmr); rcar_du_plane_write(rgrp, index, PnDDCR4, state->format->edf | PnDDCR4_CODE); @@ -521,7 +532,6 @@ static void rcar_du_plane_setup_format_gen3(struct rcar_du_group *rgrp, * register to 0 to avoid this. */ - /* TODO: Check if alpha-blending should be disabled in PnMR. */ rcar_du_plane_write(rgrp, index, PnALPHAR, 0); }