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Message-Id: <20230411114235.366042-14-biju.das.jz@bp.renesas.com>
Date: Tue, 11 Apr 2023 12:42:31 +0100
From: Biju Das <biju.das.jz@...renesas.com>
To: David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>
Cc: Biju Das <biju.das.jz@...renesas.com>,
Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, linux-media@...r.kernel.org,
Geert Uytterhoeven <geert+renesas@...der.be>,
Chris Paterson <Chris.Paterson2@...esas.com>,
Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@...renesas.com>,
linux-renesas-soc@...r.kernel.org
Subject: [PATCH v7 13/17] drm: rcar-du: Add rcar_du_lib_fb_create()
Move the common code from rcar_du_fb_create->rcar_du_lib_fb_create,
so that rzg2l_du_fb_create() can reuse the common code.
Signed-off-by: Biju Das <biju.das.jz@...renesas.com>
---
v6->v7:
* Rebased to drm-tip.
v1->v6:
* Rebased on drm-misc-next and DU-next.
v1:
* Created the lib suggested by Laurent.
Ref:
https://patchwork.kernel.org/project/linux-renesas-soc/patch/20220316131100.30685-6-biju.das.jz@bp.renesas.com/
---
drivers/gpu/drm/rcar-du/rcar_du_kms.c | 64 +--------------------
drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c | 69 +++++++++++++++++++++++
drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h | 4 ++
3 files changed, 74 insertions(+), 63 deletions(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index ae969f640bb6..74845d8bad9d 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -38,69 +38,7 @@ static struct drm_framebuffer *
rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
const struct drm_mode_fb_cmd2 *mode_cmd)
{
- struct rcar_du_device *rcdu = to_rcar_du_device(dev);
- const struct rcar_du_format_info *format;
- unsigned int chroma_pitch;
- unsigned int max_pitch;
- unsigned int align;
- unsigned int i;
-
- format = rcar_du_format_info(mode_cmd->pixel_format);
- if (format == NULL) {
- dev_dbg(dev->dev, "unsupported pixel format %p4cc\n",
- &mode_cmd->pixel_format);
- return ERR_PTR(-EINVAL);
- }
-
- if (rcdu->info->gen < 3) {
- /*
- * On Gen2 the DU limits the pitch to 4095 pixels and requires
- * buffers to be aligned to a 16 pixels boundary (or 128 bytes
- * on some platforms).
- */
- unsigned int bpp = format->planes == 1 ? format->bpp / 8 : 1;
-
- max_pitch = 4095 * bpp;
-
- if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B))
- align = 128;
- else
- align = 16 * bpp;
- } else {
- /*
- * On Gen3 the memory interface is handled by the VSP that
- * limits the pitch to 65535 bytes and has no alignment
- * constraint.
- */
- max_pitch = 65535;
- align = 1;
- }
-
- if (mode_cmd->pitches[0] & (align - 1) ||
- mode_cmd->pitches[0] > max_pitch) {
- dev_dbg(dev->dev, "invalid pitch value %u\n",
- mode_cmd->pitches[0]);
- return ERR_PTR(-EINVAL);
- }
-
- /*
- * Calculate the chroma plane(s) pitch using the horizontal subsampling
- * factor. For semi-planar formats, the U and V planes are combined, the
- * pitch must thus be doubled.
- */
- chroma_pitch = mode_cmd->pitches[0] / format->hsub;
- if (format->planes == 2)
- chroma_pitch *= 2;
-
- for (i = 1; i < format->planes; ++i) {
- if (mode_cmd->pitches[i] != chroma_pitch) {
- dev_dbg(dev->dev,
- "luma and chroma pitches are not compatible\n");
- return ERR_PTR(-EINVAL);
- }
- }
-
- return drm_gem_fb_create(dev, file_priv, mode_cmd);
+ return rcar_du_lib_fb_create(dev, file_priv, mode_cmd);
}
/* -----------------------------------------------------------------------------
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c b/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c
index 37809d06df89..f092d8e4aa16 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.c
@@ -407,3 +407,72 @@ int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev,
return drm_gem_dma_dumb_create_internal(file, dev, args);
}
+
+struct drm_framebuffer *
+rcar_du_lib_fb_create(struct drm_device *dev, struct drm_file *file_priv,
+ const struct drm_mode_fb_cmd2 *mode_cmd)
+{
+ struct rcar_du_device *rcdu = to_rcar_du_device(dev);
+ const struct rcar_du_format_info *format;
+ unsigned int chroma_pitch;
+ unsigned int max_pitch;
+ unsigned int align;
+ unsigned int i;
+
+ format = rcar_du_format_info(mode_cmd->pixel_format);
+ if (format == NULL) {
+ dev_dbg(dev->dev, "unsupported pixel format %p4cc\n",
+ &mode_cmd->pixel_format);
+ return ERR_PTR(-EINVAL);
+ }
+
+ if (rcdu->info->gen < 3) {
+ /*
+ * On Gen2 the DU limits the pitch to 4095 pixels and requires
+ * buffers to be aligned to a 16 pixels boundary (or 128 bytes
+ * on some platforms).
+ */
+ unsigned int bpp = format->planes == 1 ? format->bpp / 8 : 1;
+
+ max_pitch = 4095 * bpp;
+
+ if (rcar_du_needs(rcdu, RCAR_DU_QUIRK_ALIGN_128B))
+ align = 128;
+ else
+ align = 16 * bpp;
+ } else {
+ /*
+ * On Gen3 the memory interface is handled by the VSP that
+ * limits the pitch to 65535 bytes and has no alignment
+ * constraint.
+ */
+ max_pitch = 65535;
+ align = 1;
+ }
+
+ if (mode_cmd->pitches[0] & (align - 1) ||
+ mode_cmd->pitches[0] > max_pitch) {
+ dev_dbg(dev->dev, "invalid pitch value %u\n",
+ mode_cmd->pitches[0]);
+ return ERR_PTR(-EINVAL);
+ }
+
+ /*
+ * Calculate the chroma plane(s) pitch using the horizontal subsampling
+ * factor. For semi-planar formats, the U and V planes are combined, the
+ * pitch must thus be doubled.
+ */
+ chroma_pitch = mode_cmd->pitches[0] / format->hsub;
+ if (format->planes == 2)
+ chroma_pitch *= 2;
+
+ for (i = 1; i < format->planes; ++i) {
+ if (mode_cmd->pitches[i] != chroma_pitch) {
+ dev_dbg(dev->dev,
+ "luma and chroma pitches are not compatible\n");
+ return ERR_PTR(-EINVAL);
+ }
+ }
+
+ return drm_gem_fb_create(dev, file_priv, mode_cmd);
+}
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h b/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h
index 2556966024f8..f264e0415d53 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms_lib.h
@@ -38,4 +38,8 @@ struct drm_gem_object *rcar_du_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sgt);
+struct drm_framebuffer *
+rcar_du_lib_fb_create(struct drm_device *dev, struct drm_file *file_priv,
+ const struct drm_mode_fb_cmd2 *mode_cmd);
+
#endif /* __RCAR_DU_KMS_LIB_H__ */
--
2.25.1
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