[PATCH v2 00/10] drm/tegra: Various improvements

[PATCH v2 00/10] drm/tegra: Various improvements

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

Hi,

this fixes a couple of oddities like slightly off DMA masks and add
support for hardware cursors on newer chips as well as support for the
sector layout bit in NVIDIA framebuffer modifiers.

The first patch in this set is a small helper that I think might be
useful to other drivers eventually, but if it isn't it's easily
something I can carry in the Tegra driver. It'd be great to get an
Acked-by on it from one of the drm-misc maintainers so that I can take
it through the Tegra tree.

James, I've added you on Cc on this one because it makes use of the
extended framebuffer modifiers that you introduced a while back to
support the sector layout mux on Tegra194. It'd be great to get your
thoughts on this just so this is used as expected.

Changes in v2:
- add patch 2 that makes use of the new fourcc_mod_is_vendor() macro
- use more drm_rect helpers for hardware cursor support

Thanks,
Thierry

Thierry Reding (10):
  drm/fourcc: Add macros to determine the modifier vendor
  drm/arm: malidp: Use fourcc_mod_is_vendor() helper
  drm/tegra: dc: Inherit DMA mask
  drm/tegra: dc: Parameterize maximum resolution
  drm/tegra: dc: Implement hardware cursor on Tegra186 and later
  drm/tegra: fb: Add diagnostics for framebuffer modifiers
  drm/tegra: gem: Add a clarifying comment
  gpu: host1x: Add early init and late exit callbacks
  drm/tegra: Count number of display controllers at runtime
  drm/tegra: Support sector layout on Tegra194

 drivers/gpu/drm/arm/malidp_planes.c |   2 +-
 drivers/gpu/drm/tegra/dc.c          | 101 +++++++++++++++++++++++++---
 drivers/gpu/drm/tegra/dc.h          |   6 ++
 drivers/gpu/drm/tegra/drm.c         |  13 +++-
 drivers/gpu/drm/tegra/drm.h         |   5 ++
 drivers/gpu/drm/tegra/fb.c          |  10 +++
 drivers/gpu/drm/tegra/gem.h         |   6 ++
 drivers/gpu/drm/tegra/hub.c         |  41 ++++++++++-
 drivers/gpu/drm/tegra/plane.c       |  32 +++++++++
 drivers/gpu/host1x/bus.c            |  31 +++++++++
 include/linux/host1x.h              |   2 +
 include/uapi/drm/drm_fourcc.h       |   6 ++
 12 files changed, 241 insertions(+), 14 deletions(-)

-- 
2.30.2

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[PATCH v2 01/10] drm/fourcc: Add macros to determine the modifier vendor

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

When working with framebuffer modifiers, it can be useful to extract the
vendor identifier or check a modifier against a given vendor identifier.
Add one macro that extracts the vendor identifier and a helper to check
a modifier against a given vendor identifier.

v2: add macro to extract vendor ID from modifier (Simon)

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 include/uapi/drm/drm_fourcc.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h
index f76de49c768f..64f01bc2624c 100644
--- a/include/uapi/drm/drm_fourcc.h
+++ b/include/uapi/drm/drm_fourcc.h
@@ -366,6 +366,12 @@ extern "C" {
 
 #define DRM_FORMAT_RESERVED	      ((1ULL << 56) - 1)
 
+#define fourcc_mod_get_vendor(modifier) \
+	(((modifier) >> 56) & 0xff)
+
+#define fourcc_mod_is_vendor(modifier, vendor) \
+	(fourcc_mod_get_vendor(modifier) == DRM_FORMAT_MOD_VENDOR_## vendor)
+
 #define fourcc_mod_code(vendor, val) \
 	((((__u64)DRM_FORMAT_MOD_VENDOR_## vendor) << 56) | ((val) & 0x00ffffffffffffffULL))
 
-- 
2.30.2

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Re: [PATCH v2 01/10] drm/fourcc: Add macros to determine the modifier vendor

[Simon Ser]

LGTM, thanks!

Reviewed-by: Simon Ser <contact@emersion.fr>

Let me know if you need me to push this to drm-misc-next.
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Re: [PATCH v2 01/10] drm/fourcc: Add macros to determine the modifier vendor

[Thierry Reding]

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On Fri, Mar 26, 2021 at 02:54:22PM +0000, Simon Ser wrote:
> LGTM, thanks!
> 
> Reviewed-by: Simon Ser <contact@emersion.fr>
> 
> Let me know if you need me to push this to drm-misc-next.

I do have commit access for drm-misc-next, but I was thinking that I
could take this through the drm/tegra tree along with the subsequent
patches because of the dependency.

Anyone willing to provide an Acked-by for that?

Thierry

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Re: [PATCH v2 01/10] drm/fourcc: Add macros to determine the modifier vendor

[Daniel Stone]

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On Fri, 26 Mar 2021 at 16:29, Thierry Reding <thierry.reding@gmail.com>
wrote:

> On Fri, Mar 26, 2021 at 02:54:22PM +0000, Simon Ser wrote:
> > LGTM, thanks!
> >
> > Reviewed-by: Simon Ser <contact@emersion.fr>
> >
> > Let me know if you need me to push this to drm-misc-next.
>
> I do have commit access for drm-misc-next, but I was thinking that I
> could take this through the drm/tegra tree along with the subsequent
> patches because of the dependency.
>
> Anyone willing to provide an Acked-by for that?
>

Yep, no harm if that makes your life easier, so for both the patch itself
and merging through tegra:
Acked-by: Daniel Stone <daniels@collabora.com>

Cheers,
Daniel

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Re: [PATCH v2 01/10] drm/fourcc: Add macros to determine the modifier vendor

[Daniel Stone]

Hi Thierry,

On Tue, 27 Apr 2021 at 19:40, Daniel Stone <daniel@fooishbar.org> wrote:
> On Fri, 26 Mar 2021 at 16:29, Thierry Reding <thierry.reding@gmail.com> wrote:
>> On Fri, Mar 26, 2021 at 02:54:22PM +0000, Simon Ser wrote:
>> > LGTM, thanks!
>> >
>> > Reviewed-by: Simon Ser <contact@emersion.fr>
>> >
>> > Let me know if you need me to push this to drm-misc-next.
>>
>> I do have commit access for drm-misc-next, but I was thinking that I
>> could take this through the drm/tegra tree along with the subsequent
>> patches because of the dependency.
>>
>> Anyone willing to provide an Acked-by for that?
>
> Yep, no harm if that makes your life easier, so for both the patch itself and merging through tegra:
> Acked-by: Daniel Stone <daniels@collabora.com>

Is this still in your queue somewhere?

Cheers,
Daniel

Re: [PATCH v2 01/10] drm/fourcc: Add macros to determine the modifier vendor

[Thierry Reding]

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On Wed, Jun 09, 2021 at 05:28:50PM +0100, Daniel Stone wrote:
> Hi Thierry,
> 
> On Tue, 27 Apr 2021 at 19:40, Daniel Stone <daniel@fooishbar.org> wrote:
> > On Fri, 26 Mar 2021 at 16:29, Thierry Reding <thierry.reding@gmail.com> wrote:
> >> On Fri, Mar 26, 2021 at 02:54:22PM +0000, Simon Ser wrote:
> >> > LGTM, thanks!
> >> >
> >> > Reviewed-by: Simon Ser <contact@emersion.fr>
> >> >
> >> > Let me know if you need me to push this to drm-misc-next.
> >>
> >> I do have commit access for drm-misc-next, but I was thinking that I
> >> could take this through the drm/tegra tree along with the subsequent
> >> patches because of the dependency.
> >>
> >> Anyone willing to provide an Acked-by for that?
> >
> > Yep, no harm if that makes your life easier, so for both the patch itself and merging through tegra:
> > Acked-by: Daniel Stone <daniels@collabora.com>
> 
> Is this still in your queue somewhere?

I reverted to an open-coded version at the time because the -rc6 cut-off
was coming up quickly and I wasn't getting a response. But I do have a
set of follow-up patches in a branch somewhere that convert the existing
users to the new helpers.

Let me dig those out and send them out again.

Thierry

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Re: [PATCH v2 01/10] drm/fourcc: Add macros to determine the modifier vendor

[Daniel Stone]

On Thu, 10 Jun 2021 at 09:56, Thierry Reding <thierry.reding@gmail.com> wrote:
> On Wed, Jun 09, 2021 at 05:28:50PM +0100, Daniel Stone wrote:
> > On Tue, 27 Apr 2021 at 19:40, Daniel Stone <daniel@fooishbar.org> wrote:
> > > On Fri, 26 Mar 2021 at 16:29, Thierry Reding <thierry.reding@gmail.com> wrote:
> > >> I do have commit access for drm-misc-next, but I was thinking that I
> > >> could take this through the drm/tegra tree along with the subsequent
> > >> patches because of the dependency.
> > >>
> > >> Anyone willing to provide an Acked-by for that?
> > >
> > > Yep, no harm if that makes your life easier, so for both the patch itself and merging through tegra:
> > > Acked-by: Daniel Stone <daniels@collabora.com>
> >
> > Is this still in your queue somewhere?
>
> I reverted to an open-coded version at the time because the -rc6 cut-off
> was coming up quickly and I wasn't getting a response. But I do have a
> set of follow-up patches in a branch somewhere that convert the existing
> users to the new helpers.
>
> Let me dig those out and send them out again.

OK, I didn't realise this had been dropped from your queue. That
sounds reasonable, and we'll just open-code as well in libdrm for the
moment, since we want to have the modifier-name API in without having
to wait another few months ...

Cheers,
Daniel

[PATCH v2 02/10] drm/arm: malidp: Use fourcc_mod_is_vendor() helper

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

Rather than open-coding the vendor extraction operation, use the newly
introduced helper macro.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/arm/malidp_planes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index ddbba67f0283..cd218883cff8 100644
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -165,7 +165,7 @@ bool malidp_format_mod_supported(struct drm_device *drm,
 		return !malidp_hw_format_is_afbc_only(format);
 	}
 
-	if ((modifier >> 56) != DRM_FORMAT_MOD_VENDOR_ARM) {
+	if (!fourcc_mod_is_vendor(modifier, ARM)) {
 		DRM_ERROR("Unknown modifier (not Arm)\n");
 		return false;
 	}
-- 
2.30.2

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Re: [PATCH v2 02/10] drm/arm: malidp: Use fourcc_mod_is_vendor() helper

[Daniel Vetter]

On Fri, Mar 26, 2021 at 03:51:31PM +0100, Thierry Reding wrote:
> From: Thierry Reding <treding@nvidia.com>
> 
> Rather than open-coding the vendor extraction operation, use the newly
> introduced helper macro.
> 
> Signed-off-by: Thierry Reding <treding@nvidia.com>

On the first two patches:

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

> ---
>  drivers/gpu/drm/arm/malidp_planes.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
> index ddbba67f0283..cd218883cff8 100644
> --- a/drivers/gpu/drm/arm/malidp_planes.c
> +++ b/drivers/gpu/drm/arm/malidp_planes.c
> @@ -165,7 +165,7 @@ bool malidp_format_mod_supported(struct drm_device *drm,
>  		return !malidp_hw_format_is_afbc_only(format);
>  	}
>  
> -	if ((modifier >> 56) != DRM_FORMAT_MOD_VENDOR_ARM) {
> +	if (!fourcc_mod_is_vendor(modifier, ARM)) {
>  		DRM_ERROR("Unknown modifier (not Arm)\n");
>  		return false;
>  	}
> -- 
> 2.30.2
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

[PATCH v2 03/10] drm/tegra: dc: Inherit DMA mask

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

Inherit the DMA mask from host1x (on Tegra210 and earlier) or the
display hub (on Tegra186 and later). This is necessary in order to
properly map buffers without SMMU support and use the maximum IOVA
space available with SMMU support.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/tegra/dc.c  | 7 +++++++
 drivers/gpu/drm/tegra/hub.c | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 40bf8f33a2ae..935717e7410d 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2538,9 +2538,16 @@ static int tegra_dc_couple(struct tegra_dc *dc)
 
 static int tegra_dc_probe(struct platform_device *pdev)
 {
+	u64 dma_mask = dma_get_mask(pdev->dev.parent);
 	struct tegra_dc *dc;
 	int err;
 
+	err = dma_coerce_mask_and_coherent(&pdev->dev, dma_mask);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err);
+		return err;
+	}
+
 	dc = devm_kzalloc(&pdev->dev, sizeof(*dc), GFP_KERNEL);
 	if (!dc)
 		return -ENOMEM;
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 8e6d329d062b..617240032c37 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -848,12 +848,19 @@ static const struct host1x_client_ops tegra_display_hub_ops = {
 
 static int tegra_display_hub_probe(struct platform_device *pdev)
 {
+	u64 dma_mask = dma_get_mask(pdev->dev.parent);
 	struct device_node *child = NULL;
 	struct tegra_display_hub *hub;
 	struct clk *clk;
 	unsigned int i;
 	int err;
 
+	err = dma_coerce_mask_and_coherent(&pdev->dev, dma_mask);
+	if (err < 0) {
+		dev_err(&pdev->dev, "failed to set DMA mask: %d\n", err);
+		return err;
+	}
+
 	hub = devm_kzalloc(&pdev->dev, sizeof(*hub), GFP_KERNEL);
 	if (!hub)
 		return -ENOMEM;
-- 
2.30.2

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[PATCH v2 04/10] drm/tegra: dc: Parameterize maximum resolution

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

Tegra186 and later support a higher maximum resolution than earlier
chips, so make sure to reflect that in the mode configuration.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/tegra/dc.c  |  6 ++++++
 drivers/gpu/drm/tegra/drm.c | 13 ++++++++++---
 drivers/gpu/drm/tegra/drm.h |  1 +
 3 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 935717e7410d..0541d7b5c841 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2117,6 +2117,12 @@ static int tegra_dc_init(struct host1x_client *client)
 	if (dc->soc->pitch_align > tegra->pitch_align)
 		tegra->pitch_align = dc->soc->pitch_align;
 
+	/* track maximum resolution */
+	if (dc->soc->has_nvdisplay)
+		drm->mode_config.max_width = drm->mode_config.max_height = 16384;
+	else
+		drm->mode_config.max_width = drm->mode_config.max_height = 4096;
+
 	err = tegra_dc_rgb_init(drm, dc);
 	if (err < 0 && err != -ENODEV) {
 		dev_err(dc->dev, "failed to initialize RGB output: %d\n", err);
diff --git a/drivers/gpu/drm/tegra/drm.c b/drivers/gpu/drm/tegra/drm.c
index 6015913fef83..bbc504763bd4 100644
--- a/drivers/gpu/drm/tegra/drm.c
+++ b/drivers/gpu/drm/tegra/drm.c
@@ -1144,9 +1144,8 @@ static int host1x_drm_probe(struct host1x_device *dev)
 
 	drm->mode_config.min_width = 0;
 	drm->mode_config.min_height = 0;
-
-	drm->mode_config.max_width = 4096;
-	drm->mode_config.max_height = 4096;
+	drm->mode_config.max_width = 0;
+	drm->mode_config.max_height = 0;
 
 	drm->mode_config.allow_fb_modifiers = true;
 
@@ -1165,6 +1164,14 @@ static int host1x_drm_probe(struct host1x_device *dev)
 	if (err < 0)
 		goto fbdev;
 
+	/*
+	 * Now that all display controller have been initialized, the maximum
+	 * supported resolution is known and the bitmask for horizontal and
+	 * vertical bitfields can be computed.
+	 */
+	tegra->hmask = drm->mode_config.max_width - 1;
+	tegra->vmask = drm->mode_config.max_height - 1;
+
 	if (tegra->use_explicit_iommu) {
 		u64 carveout_start, carveout_end, gem_start, gem_end;
 		u64 dma_mask = dma_get_mask(&dev->dev);
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index 1af57c2016eb..34fbcd6abf2f 100644
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -54,6 +54,7 @@ struct tegra_drm {
 	struct tegra_fbdev *fbdev;
 #endif
 
+	unsigned int hmask, vmask;
 	unsigned int pitch_align;
 
 	struct tegra_display_hub *hub;
-- 
2.30.2

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[PATCH v2 05/10] drm/tegra: dc: Implement hardware cursor on Tegra186 and later

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

The hardware cursor on Tegra186 differs slightly from the implementation
on older SoC generations. In particular the new implementation relies on
software for clipping the cursor against the screen. Fortunately, atomic
KMS already computes clipped coordinates for (cursor) planes, so this is
trivial to implement.

The format supported by the hardware cursor is also slightly different.

v2: use more drm_rect helpers (Dmitry)

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/tegra/dc.c | 59 ++++++++++++++++++++++++++++++++------
 drivers/gpu/drm/tegra/dc.h |  5 ++++
 2 files changed, 56 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 0541d7b5c841..7758d64822ae 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -832,10 +832,14 @@ static struct drm_plane *tegra_primary_plane_create(struct drm_device *drm,
 	return &plane->base;
 }
 
-static const u32 tegra_cursor_plane_formats[] = {
+static const u32 tegra_legacy_cursor_plane_formats[] = {
 	DRM_FORMAT_RGBA8888,
 };
 
+static const u32 tegra_cursor_plane_formats[] = {
+	DRM_FORMAT_ARGB8888,
+};
+
 static int tegra_cursor_atomic_check(struct drm_plane *plane,
 				     struct drm_atomic_state *state)
 {
@@ -875,12 +879,22 @@ static void tegra_cursor_atomic_update(struct drm_plane *plane,
 									   plane);
 	struct tegra_plane_state *tegra_plane_state = to_tegra_plane_state(new_state);
 	struct tegra_dc *dc = to_tegra_dc(new_state->crtc);
-	u32 value = CURSOR_CLIP_DISPLAY;
+	struct tegra_drm *tegra = plane->dev->dev_private;
+	u64 dma_mask = *dc->dev->dma_mask;
+	unsigned int x, y;
+	u32 value = 0;
 
 	/* rien ne va plus */
 	if (!new_state->crtc || !new_state->fb)
 		return;
 
+	/*
+	 * Legacy display supports hardware clipping of the cursor, but
+	 * nvdisplay relies on software to clip the cursor to the screen.
+	 */
+	if (!dc->soc->has_nvdisplay)
+		value |= CURSOR_CLIP_DISPLAY;
+
 	switch (new_state->crtc_w) {
 	case 32:
 		value |= CURSOR_SIZE_32x32;
@@ -908,7 +922,7 @@ static void tegra_cursor_atomic_update(struct drm_plane *plane,
 	tegra_dc_writel(dc, value, DC_DISP_CURSOR_START_ADDR);
 
 #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
-	value = (tegra_plane_state->iova[0] >> 32) & 0x3;
+	value = (tegra_plane_state->iova[0] >> 32) & (dma_mask >> 32);
 	tegra_dc_writel(dc, value, DC_DISP_CURSOR_START_ADDR_HI);
 #endif
 
@@ -920,15 +934,39 @@ static void tegra_cursor_atomic_update(struct drm_plane *plane,
 	value = tegra_dc_readl(dc, DC_DISP_BLEND_CURSOR_CONTROL);
 	value &= ~CURSOR_DST_BLEND_MASK;
 	value &= ~CURSOR_SRC_BLEND_MASK;
-	value |= CURSOR_MODE_NORMAL;
+
+	if (dc->soc->has_nvdisplay)
+		value &= ~CURSOR_COMPOSITION_MODE_XOR;
+	else
+		value |= CURSOR_MODE_NORMAL;
+
 	value |= CURSOR_DST_BLEND_NEG_K1_TIMES_SRC;
 	value |= CURSOR_SRC_BLEND_K1_TIMES_SRC;
 	value |= CURSOR_ALPHA;
 	tegra_dc_writel(dc, value, DC_DISP_BLEND_CURSOR_CONTROL);
 
+	/* nvdisplay relies on software for clipping */
+	if (dc->soc->has_nvdisplay) {
+		struct drm_rect src;
+
+		x = new_state->dst.x1;
+		y = new_state->dst.y1;
+
+		drm_rect_fp_to_int(&src, &new_state->src);
+
+		value = (src.y1 & tegra->vmask) << 16 | (src.x1 & tegra->hmask);
+		tegra_dc_writel(dc, value, DC_DISP_PCALC_HEAD_SET_CROPPED_POINT_IN_CURSOR);
+
+		value = (drm_rect_height(&src) & tegra->vmask) << 16 |
+			(drm_rect_width(&src) & tegra->hmask);
+		tegra_dc_writel(dc, value, DC_DISP_PCALC_HEAD_SET_CROPPED_SIZE_IN_CURSOR);
+	} else {
+		x = new_state->crtc_x;
+		y = new_state->crtc_y;
+	}
+
 	/* position the cursor */
-	value = (new_state->crtc_y & 0x3fff) << 16 |
-		(new_state->crtc_x & 0x3fff);
+	value = ((y & tegra->vmask) << 16) | (x & tegra->hmask);
 	tegra_dc_writel(dc, value, DC_DISP_CURSOR_POSITION);
 }
 
@@ -982,8 +1020,13 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
 	plane->index = 6;
 	plane->dc = dc;
 
-	num_formats = ARRAY_SIZE(tegra_cursor_plane_formats);
-	formats = tegra_cursor_plane_formats;
+	if (!dc->soc->has_nvdisplay) {
+		num_formats = ARRAY_SIZE(tegra_legacy_cursor_plane_formats);
+		formats = tegra_legacy_cursor_plane_formats;
+	} else {
+		num_formats = ARRAY_SIZE(tegra_cursor_plane_formats);
+		formats = tegra_cursor_plane_formats;
+	}
 
 	err = drm_universal_plane_init(drm, &plane->base, possible_crtcs,
 				       &tegra_plane_funcs, formats,
diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h
index 051d03dcb9b0..21074cd2ce5e 100644
--- a/drivers/gpu/drm/tegra/dc.h
+++ b/drivers/gpu/drm/tegra/dc.h
@@ -511,6 +511,8 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 
 #define DC_DISP_CURSOR_START_ADDR_HI		0x4ec
 #define DC_DISP_BLEND_CURSOR_CONTROL		0x4f1
+#define CURSOR_COMPOSITION_MODE_BLEND		(0 << 25)
+#define CURSOR_COMPOSITION_MODE_XOR		(1 << 25)
 #define CURSOR_MODE_LEGACY			(0 << 24)
 #define CURSOR_MODE_NORMAL			(1 << 24)
 #define CURSOR_DST_BLEND_ZERO			(0 << 16)
@@ -705,6 +707,9 @@ int tegra_dc_rgb_exit(struct tegra_dc *dc);
 #define PROTOCOL_MASK (0xf << 8)
 #define PROTOCOL_SINGLE_TMDS_A (0x1 << 8)
 
+#define DC_DISP_PCALC_HEAD_SET_CROPPED_POINT_IN_CURSOR	0x442
+#define DC_DISP_PCALC_HEAD_SET_CROPPED_SIZE_IN_CURSOR	0x446
+
 #define DC_WIN_CORE_WINDOWGROUP_SET_CONTROL	0x702
 #define OWNER_MASK (0xf << 0)
 #define OWNER(x) (((x) & 0xf) << 0)
-- 
2.30.2

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Re: [PATCH v2 05/10] drm/tegra: dc: Implement hardware cursor on Tegra186 and later

[Dmitry Osipenko]

26.03.2021 17:51, Thierry Reding пишет:
> From: Thierry Reding <treding@nvidia.com>
> 
> The hardware cursor on Tegra186 differs slightly from the implementation
> on older SoC generations. In particular the new implementation relies on
> software for clipping the cursor against the screen. Fortunately, atomic
> KMS already computes clipped coordinates for (cursor) planes, so this is
> trivial to implement.
> 
> The format supported by the hardware cursor is also slightly different.
> 
> v2: use more drm_rect helpers (Dmitry)
> 
> Signed-off-by: Thierry Reding <treding@nvidia.com>
> ---
>  drivers/gpu/drm/tegra/dc.c | 59 ++++++++++++++++++++++++++++++++------
>  drivers/gpu/drm/tegra/dc.h |  5 ++++
>  2 files changed, 56 insertions(+), 8 deletions(-)
> 
> diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
> index 0541d7b5c841..7758d64822ae 100644
> --- a/drivers/gpu/drm/tegra/dc.c
> +++ b/drivers/gpu/drm/tegra/dc.c
> @@ -832,10 +832,14 @@ static struct drm_plane *tegra_primary_plane_create(struct drm_device *drm,
>  	return &plane->base;
>  }
>  
> -static const u32 tegra_cursor_plane_formats[] = {
> +static const u32 tegra_legacy_cursor_plane_formats[] = {
>  	DRM_FORMAT_RGBA8888,
>  };
>  
> +static const u32 tegra_cursor_plane_formats[] = {
> +	DRM_FORMAT_ARGB8888,
> +};
> +
>  static int tegra_cursor_atomic_check(struct drm_plane *plane,
>  				     struct drm_atomic_state *state)
>  {
> @@ -875,12 +879,22 @@ static void tegra_cursor_atomic_update(struct drm_plane *plane,
>  									   plane);
>  	struct tegra_plane_state *tegra_plane_state = to_tegra_plane_state(new_state);
>  	struct tegra_dc *dc = to_tegra_dc(new_state->crtc);
> -	u32 value = CURSOR_CLIP_DISPLAY;
> +	struct tegra_drm *tegra = plane->dev->dev_private;
> +	u64 dma_mask = *dc->dev->dma_mask;
> +	unsigned int x, y;
> +	u32 value = 0;
>  
>  	/* rien ne va plus */
>  	if (!new_state->crtc || !new_state->fb)
>  		return;
>  
> +	/*
> +	 * Legacy display supports hardware clipping of the cursor, but
> +	 * nvdisplay relies on software to clip the cursor to the screen.
> +	 */
> +	if (!dc->soc->has_nvdisplay)
> +		value |= CURSOR_CLIP_DISPLAY;
> +
>  	switch (new_state->crtc_w) {
>  	case 32:
>  		value |= CURSOR_SIZE_32x32;
> @@ -908,7 +922,7 @@ static void tegra_cursor_atomic_update(struct drm_plane *plane,
>  	tegra_dc_writel(dc, value, DC_DISP_CURSOR_START_ADDR);
>  
>  #ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
> -	value = (tegra_plane_state->iova[0] >> 32) & 0x3;
> +	value = (tegra_plane_state->iova[0] >> 32) & (dma_mask >> 32);
>  	tegra_dc_writel(dc, value, DC_DISP_CURSOR_START_ADDR_HI);
>  #endif
>  
> @@ -920,15 +934,39 @@ static void tegra_cursor_atomic_update(struct drm_plane *plane,
>  	value = tegra_dc_readl(dc, DC_DISP_BLEND_CURSOR_CONTROL);
>  	value &= ~CURSOR_DST_BLEND_MASK;
>  	value &= ~CURSOR_SRC_BLEND_MASK;
> -	value |= CURSOR_MODE_NORMAL;
> +
> +	if (dc->soc->has_nvdisplay)
> +		value &= ~CURSOR_COMPOSITION_MODE_XOR;
> +	else
> +		value |= CURSOR_MODE_NORMAL;
> +
>  	value |= CURSOR_DST_BLEND_NEG_K1_TIMES_SRC;
>  	value |= CURSOR_SRC_BLEND_K1_TIMES_SRC;
>  	value |= CURSOR_ALPHA;
>  	tegra_dc_writel(dc, value, DC_DISP_BLEND_CURSOR_CONTROL);
>  
> +	/* nvdisplay relies on software for clipping */
> +	if (dc->soc->has_nvdisplay) {
> +		struct drm_rect src;
> +
> +		x = new_state->dst.x1;
> +		y = new_state->dst.y1;
> +
> +		drm_rect_fp_to_int(&src, &new_state->src);
> +
> +		value = (src.y1 & tegra->vmask) << 16 | (src.x1 & tegra->hmask);
> +		tegra_dc_writel(dc, value, DC_DISP_PCALC_HEAD_SET_CROPPED_POINT_IN_CURSOR);
> +
> +		value = (drm_rect_height(&src) & tegra->vmask) << 16 |
> +			(drm_rect_width(&src) & tegra->hmask);
> +		tegra_dc_writel(dc, value, DC_DISP_PCALC_HEAD_SET_CROPPED_SIZE_IN_CURSOR);
> +	} else {
> +		x = new_state->crtc_x;
> +		y = new_state->crtc_y;
> +	}
> +
>  	/* position the cursor */
> -	value = (new_state->crtc_y & 0x3fff) << 16 |
> -		(new_state->crtc_x & 0x3fff);
> +	value = ((y & tegra->vmask) << 16) | (x & tegra->hmask);
>  	tegra_dc_writel(dc, value, DC_DISP_CURSOR_POSITION);
>  }
>  
> @@ -982,8 +1020,13 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
>  	plane->index = 6;
>  	plane->dc = dc;
>  
> -	num_formats = ARRAY_SIZE(tegra_cursor_plane_formats);
> -	formats = tegra_cursor_plane_formats;
> +	if (!dc->soc->has_nvdisplay) {
> +		num_formats = ARRAY_SIZE(tegra_legacy_cursor_plane_formats);
> +		formats = tegra_legacy_cursor_plane_formats;
> +	} else {
> +		num_formats = ARRAY_SIZE(tegra_cursor_plane_formats);
> +		formats = tegra_cursor_plane_formats;
> +	}

Will be nice to have all tegra_legacy_ renamed to the corresponding h/w
versions, like tegra124_; and not to use the inverted checks, like
!dc->soc->has_nvdisplay. I think this will ease following of the code.
But this should be done separately.

Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
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[PATCH v2 06/10] drm/tegra: fb: Add diagnostics for framebuffer modifiers

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

Add a debug message to let the user know when a framebuffer modifier is
not supported.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/tegra/fb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index 01939c57fc74..350f33206076 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -86,6 +86,7 @@ int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 		break;
 
 	default:
+		DRM_DEBUG_KMS("unknown format modifier: %llx\n", modifier);
 		return -EINVAL;
 	}
 
-- 
2.30.2

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[PATCH v2 07/10] drm/tegra: gem: Add a clarifying comment

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

Clarify when a fixed IOV address can be used and when a buffer has to
be mapped before the IOVA can be used.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/tegra/plane.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/tegra/plane.c b/drivers/gpu/drm/tegra/plane.c
index 19e8847a164b..793da5d675d2 100644
--- a/drivers/gpu/drm/tegra/plane.c
+++ b/drivers/gpu/drm/tegra/plane.c
@@ -119,6 +119,14 @@ static int tegra_dc_pin(struct tegra_dc *dc, struct tegra_plane_state *state)
 		dma_addr_t phys_addr, *phys;
 		struct sg_table *sgt;
 
+		/*
+		 * If we're not attached to a domain, we already stored the
+		 * physical address when the buffer was allocated. If we're
+		 * part of a group that's shared between all display
+		 * controllers, we've also already mapped the framebuffer
+		 * through the SMMU. In both cases we can short-circuit the
+		 * code below and retrieve the stored IOV address.
+		 */
 		if (!domain || dc->client.group)
 			phys = &phys_addr;
 		else
-- 
2.30.2

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[PATCH v2 08/10] gpu: host1x: Add early init and late exit callbacks

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

These callbacks can be used by client drivers to run code during early
init and during late exit. Early init callbacks are run prior to the
regular init callbacks while late exit callbacks run after the regular
exit callbacks.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/host1x/bus.c | 31 +++++++++++++++++++++++++++++++
 include/linux/host1x.h   |  2 ++
 2 files changed, 33 insertions(+)

diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index 4c18874f7c4a..c9077cfbfef9 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -196,6 +196,17 @@ int host1x_device_init(struct host1x_device *device)
 
 	mutex_lock(&device->clients_lock);
 
+	list_for_each_entry(client, &device->clients, list) {
+		if (client->ops && client->ops->early_init) {
+			err = client->ops->early_init(client);
+			if (err < 0) {
+				dev_err(&device->dev, "failed to early initialize %s: %d\n",
+					dev_name(client->dev), err);
+				goto teardown_late;
+			}
+		}
+	}
+
 	list_for_each_entry(client, &device->clients, list) {
 		if (client->ops && client->ops->init) {
 			err = client->ops->init(client);
@@ -217,6 +228,14 @@ int host1x_device_init(struct host1x_device *device)
 		if (client->ops->exit)
 			client->ops->exit(client);
 
+	/* reset client to end of list for late teardown */
+	client = list_entry(&device->clients, struct host1x_client, list);
+
+teardown_late:
+	list_for_each_entry_continue_reverse(client, &device->clients, list)
+		if (client->ops->late_exit)
+			client->ops->late_exit(client);
+
 	mutex_unlock(&device->clients_lock);
 	return err;
 }
@@ -251,6 +270,18 @@ int host1x_device_exit(struct host1x_device *device)
 		}
 	}
 
+	list_for_each_entry_reverse(client, &device->clients, list) {
+		if (client->ops && client->ops->late_exit) {
+			err = client->ops->late_exit(client);
+			if (err < 0) {
+				dev_err(&device->dev, "failed to late cleanup %s: %d\n",
+					dev_name(client->dev), err);
+				mutex_unlock(&device->clients_lock);
+				return err;
+			}
+		}
+	}
+
 	mutex_unlock(&device->clients_lock);
 
 	return 0;
diff --git a/include/linux/host1x.h b/include/linux/host1x.h
index 5890f91dd286..74970681ecdb 100644
--- a/include/linux/host1x.h
+++ b/include/linux/host1x.h
@@ -31,8 +31,10 @@ u64 host1x_get_dma_mask(struct host1x *host1x);
  * @resume: host1x client resume code
  */
 struct host1x_client_ops {
+	int (*early_init)(struct host1x_client *client);
 	int (*init)(struct host1x_client *client);
 	int (*exit)(struct host1x_client *client);
+	int (*late_exit)(struct host1x_client *client);
 	int (*suspend)(struct host1x_client *client);
 	int (*resume)(struct host1x_client *client);
 };
-- 
2.30.2

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[PATCH v2 09/10] drm/tegra: Count number of display controllers at runtime

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

In order to be able to attach planes to all possible display controllers
the exact number of CRTCs must be known. Keep track of the number of the
display controllers that register during initialization.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/tegra/dc.c  | 22 ++++++++++++++++++++++
 drivers/gpu/drm/tegra/drm.h |  1 +
 drivers/gpu/drm/tegra/hub.c |  6 ++++--
 3 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 7758d64822ae..0c51f0bb17a9 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2078,6 +2078,16 @@ static bool tegra_dc_has_window_groups(struct tegra_dc *dc)
 	return false;
 }
 
+static int tegra_dc_early_init(struct host1x_client *client)
+{
+	struct drm_device *drm = dev_get_drvdata(client->host);
+	struct tegra_drm *tegra = drm->dev_private;
+
+	tegra->num_crtcs++;
+
+	return 0;
+}
+
 static int tegra_dc_init(struct host1x_client *client)
 {
 	struct drm_device *drm = dev_get_drvdata(client->host);
@@ -2226,6 +2236,16 @@ static int tegra_dc_exit(struct host1x_client *client)
 	return 0;
 }
 
+static int tegra_dc_late_exit(struct host1x_client *client)
+{
+	struct drm_device *drm = dev_get_drvdata(client->host);
+	struct tegra_drm *tegra = drm->dev_private;
+
+	tegra->num_crtcs--;
+
+	return 0;
+}
+
 static int tegra_dc_runtime_suspend(struct host1x_client *client)
 {
 	struct tegra_dc *dc = host1x_client_to_dc(client);
@@ -2290,8 +2310,10 @@ static int tegra_dc_runtime_resume(struct host1x_client *client)
 }
 
 static const struct host1x_client_ops dc_client_ops = {
+	.early_init = tegra_dc_early_init,
 	.init = tegra_dc_init,
 	.exit = tegra_dc_exit,
+	.late_exit = tegra_dc_late_exit,
 	.suspend = tegra_dc_runtime_suspend,
 	.resume = tegra_dc_runtime_resume,
 };
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index 34fbcd6abf2f..9a089b93da24 100644
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -56,6 +56,7 @@ struct tegra_drm {
 
 	unsigned int hmask, vmask;
 	unsigned int pitch_align;
+	unsigned int num_crtcs;
 
 	struct tegra_display_hub *hub;
 };
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 617240032c37..500c9d37e654 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -562,9 +562,8 @@ struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
 	enum drm_plane_type type = DRM_PLANE_TYPE_OVERLAY;
 	struct tegra_drm *tegra = drm->dev_private;
 	struct tegra_display_hub *hub = tegra->hub;
-	/* planes can be assigned to arbitrary CRTCs */
-	unsigned int possible_crtcs = 0x7;
 	struct tegra_shared_plane *plane;
+	unsigned int possible_crtcs;
 	unsigned int num_formats;
 	const u64 *modifiers;
 	struct drm_plane *p;
@@ -583,6 +582,9 @@ struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
 
 	p = &plane->base.base;
 
+	/* planes can be assigned to arbitrary CRTCs */
+	possible_crtcs = BIT(tegra->num_crtcs) - 1;
+
 	num_formats = ARRAY_SIZE(tegra_shared_plane_formats);
 	formats = tegra_shared_plane_formats;
 	modifiers = tegra_shared_plane_modifiers;
-- 
2.30.2

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[PATCH v2 10/10] drm/tegra: Support sector layout on Tegra194

[Thierry Reding]

From: Thierry Reding <treding@nvidia.com>

Tegra194 has a special physical address bit that enables some memory
swizzling logic to support different sector layouts. Support the bit
that selects the sector layout which is passed in the framebuffer
modifier.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---
 drivers/gpu/drm/tegra/dc.c    |  7 +++++++
 drivers/gpu/drm/tegra/dc.h    |  1 +
 drivers/gpu/drm/tegra/drm.h   |  3 +++
 drivers/gpu/drm/tegra/fb.c    |  9 +++++++++
 drivers/gpu/drm/tegra/gem.h   |  6 ++++++
 drivers/gpu/drm/tegra/hub.c   | 28 ++++++++++++++++++++++++++++
 drivers/gpu/drm/tegra/plane.c | 24 ++++++++++++++++++++++++
 7 files changed, 78 insertions(+)

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index 0c51f0bb17a9..2f6c02bf96e5 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -2323,6 +2323,7 @@ static const struct tegra_dc_soc_info tegra20_dc_soc_info = {
 	.supports_interlacing = false,
 	.supports_cursor = false,
 	.supports_block_linear = false,
+	.supports_sector_layout = false,
 	.has_legacy_blending = true,
 	.pitch_align = 8,
 	.has_powergate = false,
@@ -2342,6 +2343,7 @@ static const struct tegra_dc_soc_info tegra30_dc_soc_info = {
 	.supports_interlacing = false,
 	.supports_cursor = false,
 	.supports_block_linear = false,
+	.supports_sector_layout = false,
 	.has_legacy_blending = true,
 	.pitch_align = 8,
 	.has_powergate = false,
@@ -2361,6 +2363,7 @@ static const struct tegra_dc_soc_info tegra114_dc_soc_info = {
 	.supports_interlacing = false,
 	.supports_cursor = false,
 	.supports_block_linear = false,
+	.supports_sector_layout = false,
 	.has_legacy_blending = true,
 	.pitch_align = 64,
 	.has_powergate = true,
@@ -2380,6 +2383,7 @@ static const struct tegra_dc_soc_info tegra124_dc_soc_info = {
 	.supports_interlacing = true,
 	.supports_cursor = true,
 	.supports_block_linear = true,
+	.supports_sector_layout = false,
 	.has_legacy_blending = false,
 	.pitch_align = 64,
 	.has_powergate = true,
@@ -2399,6 +2403,7 @@ static const struct tegra_dc_soc_info tegra210_dc_soc_info = {
 	.supports_interlacing = true,
 	.supports_cursor = true,
 	.supports_block_linear = true,
+	.supports_sector_layout = false,
 	.has_legacy_blending = false,
 	.pitch_align = 64,
 	.has_powergate = true,
@@ -2452,6 +2457,7 @@ static const struct tegra_dc_soc_info tegra186_dc_soc_info = {
 	.supports_interlacing = true,
 	.supports_cursor = true,
 	.supports_block_linear = true,
+	.supports_sector_layout = false,
 	.has_legacy_blending = false,
 	.pitch_align = 64,
 	.has_powergate = false,
@@ -2500,6 +2506,7 @@ static const struct tegra_dc_soc_info tegra194_dc_soc_info = {
 	.supports_interlacing = true,
 	.supports_cursor = true,
 	.supports_block_linear = true,
+	.supports_sector_layout = true,
 	.has_legacy_blending = false,
 	.pitch_align = 64,
 	.has_powergate = false,
diff --git a/drivers/gpu/drm/tegra/dc.h b/drivers/gpu/drm/tegra/dc.h
index 21074cd2ce5e..29f19c3c6149 100644
--- a/drivers/gpu/drm/tegra/dc.h
+++ b/drivers/gpu/drm/tegra/dc.h
@@ -52,6 +52,7 @@ struct tegra_dc_soc_info {
 	bool supports_interlacing;
 	bool supports_cursor;
 	bool supports_block_linear;
+	bool supports_sector_layout;
 	bool has_legacy_blending;
 	unsigned int pitch_align;
 	bool has_powergate;
diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h
index 9a089b93da24..fe1a37e95bfa 100644
--- a/drivers/gpu/drm/tegra/drm.h
+++ b/drivers/gpu/drm/tegra/drm.h
@@ -24,6 +24,9 @@
 #include "hub.h"
 #include "trace.h"
 
+/* XXX move to include/uapi/drm/drm_fourcc.h? */
+#define DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT BIT(22)
+
 struct reset_control;
 
 #ifdef CONFIG_DRM_FBDEV_EMULATION
diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index 350f33206076..c04dda8353fd 100644
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -44,6 +44,15 @@ int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
 {
 	uint64_t modifier = framebuffer->modifier;
 
+	if (fourcc_mod_is_vendor(modifier, NVIDIA)) {
+		if ((modifier & DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT) == 0)
+			tiling->sector_layout = TEGRA_BO_SECTOR_LAYOUT_TEGRA;
+		else
+			tiling->sector_layout = TEGRA_BO_SECTOR_LAYOUT_GPU;
+
+		modifier &= ~DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT;
+	}
+
 	switch (modifier) {
 	case DRM_FORMAT_MOD_LINEAR:
 		tiling->mode = TEGRA_BO_TILING_MODE_PITCH;
diff --git a/drivers/gpu/drm/tegra/gem.h b/drivers/gpu/drm/tegra/gem.h
index fafb5724499b..c15fd99d6cb2 100644
--- a/drivers/gpu/drm/tegra/gem.h
+++ b/drivers/gpu/drm/tegra/gem.h
@@ -21,9 +21,15 @@ enum tegra_bo_tiling_mode {
 	TEGRA_BO_TILING_MODE_BLOCK,
 };
 
+enum tegra_bo_sector_layout {
+	TEGRA_BO_SECTOR_LAYOUT_TEGRA,
+	TEGRA_BO_SECTOR_LAYOUT_GPU,
+};
+
 struct tegra_bo_tiling {
 	enum tegra_bo_tiling_mode mode;
 	unsigned long value;
+	enum tegra_bo_sector_layout sector_layout;
 };
 
 struct tegra_bo {
diff --git a/drivers/gpu/drm/tegra/hub.c b/drivers/gpu/drm/tegra/hub.c
index 500c9d37e654..79bff8b48271 100644
--- a/drivers/gpu/drm/tegra/hub.c
+++ b/drivers/gpu/drm/tegra/hub.c
@@ -55,6 +55,18 @@ static const u64 tegra_shared_plane_modifiers[] = {
 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3),
 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4),
 	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5),
+	/*
+	 * The GPU sector layout is only supported on Tegra194, but these will
+	 * be filtered out later on by ->format_mod_supported() on SoCs where
+	 * it isn't supported.
+	 */
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(0) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT,
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(1) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT,
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(2) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT,
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(3) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT,
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(4) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT,
+	DRM_FORMAT_MOD_NVIDIA_16BX2_BLOCK(5) | DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT,
+	/* sentinel */
 	DRM_FORMAT_MOD_INVALID
 };
 
@@ -366,6 +378,12 @@ static int tegra_shared_plane_atomic_check(struct drm_plane *plane,
 		return -EINVAL;
 	}
 
+	if (tiling->sector_layout == TEGRA_BO_SECTOR_LAYOUT_GPU &&
+	    !dc->soc->supports_sector_layout) {
+		DRM_ERROR("hardware doesn't support GPU sector layout\n");
+		return -EINVAL;
+	}
+
 	/*
 	 * Tegra doesn't support different strides for U and V planes so we
 	 * error out if the user tries to display a framebuffer with such a
@@ -485,6 +503,16 @@ static void tegra_shared_plane_atomic_update(struct drm_plane *plane,
 
 	base = tegra_plane_state->iova[0] + fb->offsets[0];
 
+#ifdef CONFIG_ARCH_DMA_ADDR_T_64BIT
+	/*
+	 * Physical address bit 39 in Tegra194 is used as a switch for special
+	 * logic that swizzles the memory using either the legacy Tegra or the
+	 * dGPU sector layout.
+	 */
+	if (tegra_plane_state->tiling.sector_layout == TEGRA_BO_SECTOR_LAYOUT_GPU)
+		base |= BIT(39);
+#endif
+
 	tegra_plane_writel(p, tegra_plane_state->format, DC_WIN_COLOR_DEPTH);
 	tegra_plane_writel(p, 0, DC_WIN_PRECOMP_WGRP_PARAMS);
 
diff --git a/drivers/gpu/drm/tegra/plane.c b/drivers/gpu/drm/tegra/plane.c
index 793da5d675d2..1e0eae8b4342 100644
--- a/drivers/gpu/drm/tegra/plane.c
+++ b/drivers/gpu/drm/tegra/plane.c
@@ -83,6 +83,22 @@ static void tegra_plane_atomic_destroy_state(struct drm_plane *plane,
 	kfree(state);
 }
 
+static bool tegra_plane_supports_sector_layout(struct drm_plane *plane)
+{
+	struct drm_crtc *crtc;
+
+	drm_for_each_crtc(crtc, plane->dev) {
+		if (plane->possible_crtcs & drm_crtc_mask(crtc)) {
+			struct tegra_dc *dc = to_tegra_dc(crtc);
+
+			if (!dc->soc->supports_sector_layout)
+				return false;
+		}
+	}
+
+	return true;
+}
+
 static bool tegra_plane_format_mod_supported(struct drm_plane *plane,
 					     uint32_t format,
 					     uint64_t modifier)
@@ -92,6 +108,14 @@ static bool tegra_plane_format_mod_supported(struct drm_plane *plane,
 	if (modifier == DRM_FORMAT_MOD_LINEAR)
 		return true;
 
+	/* check for the sector layout bit */
+	if (fourcc_mod_is_vendor(modifier, NVIDIA)) {
+		if (modifier & DRM_FORMAT_MOD_NVIDIA_SECTOR_LAYOUT) {
+			if (!tegra_plane_supports_sector_layout(plane))
+				return false;
+		}
+	}
+
 	if (info->num_planes == 1)
 		return true;
 
-- 
2.30.2

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