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 <[email protected]>
---
drivers/gpu/drm/rcar-du/rcar_du_kms.c | 36 +++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 5a910a04e1d9..29a2020a46b5 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"
@@ -367,6 +368,38 @@ 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)
{
@@ -409,6 +442,9 @@ 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
Hi Jacopo,
Thank you for the patch.
On Thu, Jun 06, 2019 at 04:22:20PM +0200, Jacopo Mondi 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 <[email protected]>
> ---
> drivers/gpu/drm/rcar-du/rcar_du_kms.c | 36 +++++++++++++++++++++++++++
> 1 file changed, 36 insertions(+)
>
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> index 5a910a04e1d9..29a2020a46b5 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"
> @@ -367,6 +368,38 @@ 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]);
Do you need to call rcar_cmm_setup() at all in this case ?
> + 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)
> {
> @@ -409,6 +442,9 @@ 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,
--
Regards,
Laurent Pinchart
Hi Laurent,
On Fri, Jun 07, 2019 at 03:06:33PM +0300, Laurent Pinchart wrote:
> Hi Jacopo,
>
> Thank you for the patch.
>
> On Thu, Jun 06, 2019 at 04:22:20PM +0200, Jacopo Mondi 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 <[email protected]>
> > ---
> > drivers/gpu/drm/rcar-du/rcar_du_kms.c | 36 +++++++++++++++++++++++++++
> > 1 file changed, 36 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> > index 5a910a04e1d9..29a2020a46b5 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"
> > @@ -367,6 +368,38 @@ 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]);
>
> Do you need to call rcar_cmm_setup() at all in this case ?
>
Do you mean in case the lut.size field is set to 0 ?
I considered it useful when the CMM has to be re-enabled without
updateing the LUT table entries? It is not required in your opinion?
Thanks
j
> > + 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)
> > {
> > @@ -409,6 +442,9 @@ 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,
>
> --
> Regards,
>
> Laurent Pinchart
Hi Jacopo,
On Fri, Jun 14, 2019 at 10:19:13AM +0200, Jacopo Mondi wrote:
> On Fri, Jun 07, 2019 at 03:06:33PM +0300, Laurent Pinchart wrote:
> > On Thu, Jun 06, 2019 at 04:22:20PM +0200, Jacopo Mondi 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 <[email protected]>
> >> ---
> >> drivers/gpu/drm/rcar-du/rcar_du_kms.c | 36 +++++++++++++++++++++++++++
> >> 1 file changed, 36 insertions(+)
> >>
> >> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
> >> index 5a910a04e1d9..29a2020a46b5 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"
> >> @@ -367,6 +368,38 @@ 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]);
> >
> > Do you need to call rcar_cmm_setup() at all in this case ?
>
> Do you mean in case the lut.size field is set to 0 ?
> I considered it useful when the CMM has to be re-enabled without
> updateing the LUT table entries? It is not required in your opinion?
You're right, I thought userspace couldn't do this, but it actually can.
> >> + 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)
> >> {
> >> @@ -409,6 +442,9 @@ 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,
--
Regards,
Laurent Pinchart