The R8A7790 DU seems to require a 128 bytes pitch alignment, even though
the documentation only mentions a 16 pixels alignement as for the
R8A7779 DU. Make this configurable through a device flag.
Signed-off-by: Laurent Pinchart <laurent.pinchart+rene...@ideasonboard.com>
---
drivers/gpu/drm/rcar-du/rcar_du_drv.c | 2 +-
drivers/gpu/drm/rcar-du/rcar_du_drv.h | 1 +
drivers/gpu/drm/rcar-du/rcar_du_kms.c | 17 ++++++++++++++---
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 9c7406c..fe93670 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -216,7 +216,7 @@ static const struct rcar_du_device_info
rcar_du_r8a7779_info = {
};
static const struct rcar_du_device_info rcar_du_r8a7790_info = {
- .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK,
+ .features = RCAR_DU_FEATURE_CRTC_IRQ_CLOCK | RCAR_DU_FEATURE_ALIGN_128B,
};
static const struct platform_device_id rcar_du_id_table[] = {
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
index 5b57a2f..072e28e 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.h
@@ -26,6 +26,7 @@ struct drm_device;
struct rcar_du_device;
#define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK (1 << 0) /* Per-CRTC IRQ and
clock */
+#define RCAR_DU_FEATURE_ALIGN_128B (1 << 1) /* Align pitches to 128
bytes */
/*
* struct rcar_du_device_info - DU model-specific information
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index 845bcb3..418d902 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -111,11 +111,18 @@ const struct rcar_du_format_info *rcar_du_format_info(u32
fourcc)
int rcar_du_dumb_create(struct drm_file *file, struct drm_device *dev,
struct drm_mode_create_dumb *args)
{
+ struct rcar_du_device *rcdu = dev->dev_private;
unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
unsigned int align;
- /* The pitch must be aligned to a 16 pixels boundary. */
- align = 16 * args->bpp / 8;
+ /* The R8A7779 DU requires a 16 pixels pitch alignment as documented,
+ * but the R8A7790 DU seems to require a 128 bytes pitch alignment.
+ */
+ if (rcar_du_has(rcdu, RCAR_DU_FEATURE_ALIGN_128B))
+ align = 128;
+ else
+ align = 16 * args->bpp / 8;
+
args->pitch = roundup(max(args->pitch, min_pitch), align);
return drm_gem_cma_dumb_create(file, dev, args);
@@ -125,6 +132,7 @@ static struct drm_framebuffer *
rcar_du_fb_create(struct drm_device *dev, struct drm_file *file_priv,
struct drm_mode_fb_cmd2 *mode_cmd)
{
+ struct rcar_du_device *rcdu = dev->dev_private;
const struct rcar_du_format_info *format;
unsigned int align;
@@ -135,7 +143,10 @@ rcar_du_fb_create(struct drm_device *dev, struct drm_file
*file_priv,
return ERR_PTR(-EINVAL);
}
- align = 16 * format->bpp / 8;
+ if (rcar_du_has(rcdu, RCAR_DU_FEATURE_ALIGN_128B))
+ align = 128;
+ else
+ align = 16 * format->bpp / 8;
if (mode_cmd->pitches[0] & (align - 1) ||
mode_cmd->pitches[0] >= 8192) {
--
1.8.1.5
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