From: Ayan Halder <Ayan.Halder@arm.com>
To: Ayan Halder <Ayan.Halder@arm.com>,
Liviu Dudau <Liviu.Dudau@arm.com>,
Brian Starkey <Brian.Starkey@arm.com>,
"malidp@foss.arm.com" <malidp@foss.arm.com>,
"airlied@linux.ie" <airlied@linux.ie>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"maxime.ripard@bootlin.com" <maxime.ripard@bootlin.com>,
"sean@poorly.run" <sean@poorly.run>,
"maarten.lankhorst@linux.intel.com"
<maarten.lankhorst@linux.intel.com>,
"corbet@lwn.net" <corbet@lwn.net>,
"mchehab+samsung@kernel.org" <mchehab+samsung@kernel.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
"davem@davemloft.net" <davem@davemloft.net>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"nicolas.ferre@microchip.com" <nicolas.ferre@microchip.com>,
"arnd@arndb.de" <arnd@arndb.de>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>
Cc: nd <nd@arm.com>
Subject: [RFC AFBC 11/12] drm/arm/malidp:- Disregard the pitch alignment constraint for AFBC framebuffer.
Date: Mon, 3 Dec 2018 11:32:05 +0000 [thread overview]
Message-ID: <1543836703-8491-12-git-send-email-ayan.halder@arm.com> (raw)
In-Reply-To: <1543836703-8491-1-git-send-email-ayan.halder@arm.com>
Considering the fact that some of the AFBC specific pixel formats are expressed
in bits per pixel (ie bpp which is not byte aligned), the pitch (ie width * bpp)
is not guaranteed to be aligned to burst size (ie 8 or 16 bytes).
For example, DRM_FORMAT_VUY101010 is 30 bits per pixel. For a framebuffer of
width 32 pixels, the pitch will be 120 bytes which is not aligned to burst size
(ie 16 bytes) for DP650.
Signed-off-by: Ayan Kumar halder <ayan.halder@arm.com>
---
drivers/gpu/drm/arm/malidp_planes.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index d0a00ee..eec0442 100644
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -529,8 +529,8 @@ static int malidp_de_plane_check(struct drm_plane *plane,
for (i = 0; i < ms->n_planes; i++) {
u8 alignment = malidp_hw_get_pitch_align(mp->hwdev, rotated);
- if ((fb->pitches[i] * drm_format_info_block_height(fb->format, i))
- & (alignment - 1)) {
+ if (((fb->pitches[i] * drm_format_info_block_height(fb->format, i))
+ & (alignment - 1)) && !(fb->modifier)) {
DRM_DEBUG_KMS("Invalid pitch %u for plane %d\n",
fb->pitches[i], i);
return -EINVAL;
--
2.7.4
next prev parent reply other threads:[~2018-12-03 11:32 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-03 11:31 [RFC AFBC v2 00/12] Add support for Arm Framebuffer Compression(AFBC) in mali display driver Ayan Halder
2018-12-03 11:31 ` [RFC AFBC 01/12] drm/fourcc: Add AFBC yuv fourccs for Mali Ayan Halder
2018-12-03 11:31 ` [RFC AFBC 02/12] drm: Added a new format DRM_FORMAT_XVYU2101010 Ayan Halder
2018-12-04 16:31 ` Liviu Dudau
2018-12-03 11:31 ` [RFC AFBC 03/12] drm/afbc: Add AFBC modifier usage documentation Ayan Halder
2019-01-03 20:44 ` Ezequiel Garcia
2019-01-11 18:07 ` Liviu Dudau
2019-01-14 12:23 ` Jani Nikula
2019-01-14 14:13 ` Brian Starkey
2019-01-14 14:24 ` Jani Nikula
2018-12-03 11:31 ` [RFC v3 AFBC 04/12] drm/arm/malidp: Set the AFBC register bits if the framebuffer has AFBC modifier Ayan Halder
2018-12-04 16:50 ` Liviu Dudau
2018-12-14 13:45 ` Ayan Halder
2018-12-17 14:01 ` Liviu Dudau
2018-12-03 11:31 ` [RFC AFBC 05/12] drm/arm/malidp:- Define a common list of AFBC format modifiers supported for DP500, DP550 and DP650 Ayan Halder
2018-12-04 16:56 ` Liviu Dudau
2018-12-03 11:32 ` [RFC AFBC 06/12] drm/arm/malidp:- Added support for new YUV formats " Ayan Halder
2018-12-04 16:57 ` Liviu Dudau
2018-12-14 14:12 ` Ayan Halder
2018-12-17 14:04 ` Liviu Dudau
2018-12-03 11:32 ` [RFC AFBC 07/12] drm/arm/malidp: Define the constraints on each supported drm_fourcc format for the AFBC modifiers Ayan Halder
2018-12-04 17:49 ` Liviu Dudau
2018-12-14 14:23 ` Ayan Halder
2018-12-03 11:32 ` [RFC AFBC 08/12] drm/arm/malidp: Specified the rotation memory requirements for AFBC YUV formats Ayan Halder
2018-12-04 17:50 ` Liviu Dudau
2018-12-03 11:32 ` [RFC AFBC 09/12] drm/arm/malidp:- Writeback framebuffer does not support any modifiers Ayan Halder
2018-12-04 17:50 ` Liviu Dudau
2018-12-03 11:32 ` [RFC AFBC 10/12] drm/arm/malidp:- Use the newly introduced malidp_format_get_bpp() instead of relying on cpp for calculating framebuffer size Ayan Halder
2018-12-04 17:51 ` Liviu Dudau
2018-12-03 11:32 ` Ayan Halder [this message]
2018-12-04 17:52 ` [RFC AFBC 11/12] drm/arm/malidp:- Disregard the pitch alignment constraint for AFBC framebuffer Liviu Dudau
2018-12-03 11:32 ` [RFC v3 AFBC 12/12] drm/arm/malidp: Added support for AFBC modifiers for all layers except DE_SMART Ayan Halder
2018-12-04 17:54 ` Liviu Dudau
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