Re: [PATCH 12/12] drm/format-helper: Move destination-buffer handling into internal helper
Hi Thomas,
> > > - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
> > > - 0, 0, 0, 0
> > > - };
> > > const struct drm_format_info *format = fb->format;
> > > - u8 cpp = format->cpp[0];
> > > void (*swab_line)(void *dbuf, const void *sbuf, unsigned int
> > > npixels);
> > > - switch (cpp) {
> > > + switch (format->cpp[0]) {
> > > case 4:
> > > swab_line = drm_fb_swab32_line;
> > > break;
> > > @@ -230,21 +249,10 @@ void drm_fb_swab(struct iosys_map *dst, const
> > > unsigned int *dst_pitch,
> > > default:
> > > drm_warn_once(fb->dev, "Format %p4cc has unsupported
> > > pixel size.\n",
> > > &format->format);
> > > - swab_line = NULL;
> > > - break;
> > > - }
> > > - if (!swab_line)
> > > return;
> > > + }
> > > - if (!dst_pitch)
> > > - dst_pitch = default_dst_pitch;
> > > -
> > > - if (dst->is_iomem)
> > > - drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], cpp,
> > > - vmap[0].vaddr, fb, clip, cached, swab_line);
> > > - else
> > > - drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], cpp, vmap[0].vaddr, fb,
> > > - clip, cached, swab_line);
> > > + drm_fb_xfrm(dst, dst_pitch, format->cpp, vmap, fb, clip, cached,
> > > swab_line);
> >
> > In this case we pass fb->format-cpp as dst_pitch - so we could retreive
> > is via the fb pointer.
>
> I don't understand this comment. We're passing format->cpp as dst_pixsize.
> I've meanwhile updated the code to compute the value from
> drm_format_info_bpp().
I wanted to ask if we could drop the format->cpp argument and in
drm_fb_xfrm() use fb->format to retrieve the char per pixel.
So we move this part down in drm_fb_xfrm(), rather than finding
the char per pixel in all callers.
Maybe some of the other callers do not allow this and then this comment
can be ignored.
I have not yet looked at the updated patch-set.
Sam
Re: [PATCH 12/12] drm/format-helper: Move destination-buffer handling into internal helper
Hi Sam
Am 05.08.22 um 19:52 schrieb Sam Ravnborg:
Hi Thomas,
On Wed, Jul 27, 2022 at 01:33:12PM +0200, Thomas Zimmermann wrote:
The format-convertion helpers handle several cases for different
values of destination buffer and pitch. Move that code into the
internal helper drm_fb_xfrm() and avoid quite a bit of duplucation.
This is very nice patch that should come before all the conversion
patches - but then you have had to come up with another name.
So I think this is fine.
A few comments below, mostly in the same area as the comments from José.
Sam
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/drm_format_helper.c | 169 +++-
1 file changed, 64 insertions(+), 105 deletions(-)
diff --git a/drivers/gpu/drm/drm_format_helper.c
b/drivers/gpu/drm/drm_format_helper.c
index d296d181659d..35aebdb90165 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -41,11 +41,11 @@ unsigned int drm_fb_clip_offset(unsigned int pitch, const
struct drm_format_info
}
EXPORT_SYMBOL(drm_fb_clip_offset);
-/* TODO: Make this functon work with multi-plane formats. */
-static int drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
dst_pixsize,
- const void *vaddr, const struct drm_framebuffer *fb,
- const struct drm_rect *clip, bool vaddr_cached_hint,
- void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
int npixels))
+/* TODO: Make this function work with multi-plane formats. */
+static int __drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
dst_pixsize,
+const void *vaddr, const struct drm_framebuffer *fb,
+const struct drm_rect *clip, bool vaddr_cached_hint,
+void (*xfrm_line)(void *dbuf, const void *sbuf,
unsigned int npixels))
{
unsigned long linepixels = drm_rect_width(clip);
unsigned long lines = drm_rect_height(clip);
@@ -84,11 +84,11 @@ static int drm_fb_xfrm(void *dst, unsigned long dst_pitch,
unsigned long dst_pix
return 0;
}
-/* TODO: Make this functon work with multi-plane formats. */
-static int drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
unsigned long dst_pixsize,
- const void *vaddr, const struct drm_framebuffer *fb,
- const struct drm_rect *clip, bool vaddr_cached_hint,
- void (*xfrm_line)(void *dbuf, const void *sbuf,
unsigned int npixels))
+/* TODO: Make this function work with multi-plane formats. */
+static int __drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
unsigned long dst_pixsize,
+ const void *vaddr, const struct drm_framebuffer
*fb,
+ const struct drm_rect *clip, bool
vaddr_cached_hint,
+ void (*xfrm_line)(void *dbuf, const void *sbuf,
unsigned int npixels))
{
unsigned long linepixels = drm_rect_width(clip);
unsigned long lines = drm_rect_height(clip);
@@ -129,6 +129,29 @@ static int drm_fb_xfrm_toio(void __iomem *dst, unsigned
long dst_pitch, unsigned
return 0;
}
+/* TODO: Make this function work with multi-plane formats. */
+static int drm_fb_xfrm(struct iosys_map *dst,
+ const unsigned int *dst_pitch, const u8 *dst_pixsize,
+ const struct iosys_map *vmap, const struct
drm_framebuffer *fb,
+ const struct drm_rect *clip, bool vaddr_cached_hint,
+ void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
int npixels))
+{
Just to repeat myself a little, this assumes src (vmap) is always system
memory (not io).
+ static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
+ 0, 0, 0, 0
+ };
+
+ if (!dst_pitch)
+ dst_pitch = default_dst_pitch;
+
+ if (dst[0].is_iomem)
+ return __drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0],
dst_pixsize[0],
+ vmap[0].vaddr, fb, clip, false,
xfrm_line);
+ else
+ return __drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], dst_pixsize[0],
+vmap[0].vaddr, fb, clip, false, xfrm_line);
It looks like vaddr_cached_hint is always false, so can we remove it?
Always passing false is a bug. drm_fb_swab() uses vaddr_cached_hint and
we should forward the value here.
+}
+
+
/**
* drm_fb_memcpy - Copy clip buffer
* @dst: Array of destination buffers
@@ -213,14 +236,10 @@ void drm_fb_swab(struct iosys_map *dst, const unsigned
int *dst_pitch,
const struct iosys_map *vmap, const struct drm_framebuffer *fb,
const struct drm_rect *clip, bool cached)
{
- static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
- 0, 0, 0, 0
- };
Re: [PATCH 12/12] drm/format-helper: Move destination-buffer handling into internal helper
Hi Thomas,
On Wed, Jul 27, 2022 at 01:33:12PM +0200, Thomas Zimmermann wrote:
> The format-convertion helpers handle several cases for different
> values of destination buffer and pitch. Move that code into the
> internal helper drm_fb_xfrm() and avoid quite a bit of duplucation.
This is very nice patch that should come before all the conversion
patches - but then you have had to come up with another name.
So I think this is fine.
A few comments below, mostly in the same area as the comments from José.
Sam
>
> Signed-off-by: Thomas Zimmermann
> ---
> drivers/gpu/drm/drm_format_helper.c | 169 +++-
> 1 file changed, 64 insertions(+), 105 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_format_helper.c
> b/drivers/gpu/drm/drm_format_helper.c
> index d296d181659d..35aebdb90165 100644
> --- a/drivers/gpu/drm/drm_format_helper.c
> +++ b/drivers/gpu/drm/drm_format_helper.c
> @@ -41,11 +41,11 @@ unsigned int drm_fb_clip_offset(unsigned int pitch, const
> struct drm_format_info
> }
> EXPORT_SYMBOL(drm_fb_clip_offset);
>
> -/* TODO: Make this functon work with multi-plane formats. */
> -static int drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
> dst_pixsize,
> -const void *vaddr, const struct drm_framebuffer *fb,
> -const struct drm_rect *clip, bool vaddr_cached_hint,
> -void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
> int npixels))
> +/* TODO: Make this function work with multi-plane formats. */
> +static int __drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
> dst_pixsize,
> + const void *vaddr, const struct drm_framebuffer *fb,
> + const struct drm_rect *clip, bool vaddr_cached_hint,
> + void (*xfrm_line)(void *dbuf, const void *sbuf,
> unsigned int npixels))
> {
> unsigned long linepixels = drm_rect_width(clip);
> unsigned long lines = drm_rect_height(clip);
> @@ -84,11 +84,11 @@ static int drm_fb_xfrm(void *dst, unsigned long
> dst_pitch, unsigned long dst_pix
> return 0;
> }
>
> -/* TODO: Make this functon work with multi-plane formats. */
> -static int drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
> unsigned long dst_pixsize,
> - const void *vaddr, const struct drm_framebuffer *fb,
> - const struct drm_rect *clip, bool vaddr_cached_hint,
> - void (*xfrm_line)(void *dbuf, const void *sbuf,
> unsigned int npixels))
> +/* TODO: Make this function work with multi-plane formats. */
> +static int __drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
> unsigned long dst_pixsize,
> + const void *vaddr, const struct drm_framebuffer
> *fb,
> + const struct drm_rect *clip, bool
> vaddr_cached_hint,
> + void (*xfrm_line)(void *dbuf, const void *sbuf,
> unsigned int npixels))
> {
> unsigned long linepixels = drm_rect_width(clip);
> unsigned long lines = drm_rect_height(clip);
> @@ -129,6 +129,29 @@ static int drm_fb_xfrm_toio(void __iomem *dst, unsigned
> long dst_pitch, unsigned
> return 0;
> }
>
> +/* TODO: Make this function work with multi-plane formats. */
> +static int drm_fb_xfrm(struct iosys_map *dst,
> +const unsigned int *dst_pitch, const u8 *dst_pixsize,
> +const struct iosys_map *vmap, const struct
> drm_framebuffer *fb,
> +const struct drm_rect *clip, bool vaddr_cached_hint,
> +void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
> int npixels))
> +{
Just to repeat myself a little, this assumes src (vmap) is always system
memory (not io).
> + static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
> + 0, 0, 0, 0
> + };
> +
> + if (!dst_pitch)
> + dst_pitch = default_dst_pitch;
> +
> + if (dst[0].is_iomem)
> + return __drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0],
> dst_pixsize[0],
> + vmap[0].vaddr, fb, clip, false,
> xfrm_line);
> + else
> + return __drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], dst_pixsize[0],
> + vmap[0].vaddr, fb, clip, false, xfrm_line);
It looks like vaddr_cached_hint is always false, so can we remove it?
> +}
> +
> +
> /**
> * drm_fb_memcpy - Copy clip buffer
> * @dst: Array of destination buffers
> @@ -213,14 +236,10 @@ void drm_fb_swab(struct iosys_map *dst, const unsigned
> int *dst_pitch,
>const struct iosys_map *vmap, const struct drm_framebuffer *fb,
>const struct drm_rect *clip, bool cached)
> {
> - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
> - 0, 0, 0, 0
> - };
> const struct drm_format_info *format = fb->format;
>
Re: [PATCH 12/12] drm/format-helper: Move destination-buffer handling into internal helper
On Thu, Jul 28, 2022 at 09:45:27AM +0200, Thomas Zimmermann wrote:
> Hi
>
> Am 28.07.22 um 09:26 schrieb José Expósito:
> > Hi!
> >
> > On Wed, Jul 27, 2022 at 01:33:12PM +0200, Thomas Zimmermann wrote:
> > > The format-convertion helpers handle several cases for different
> > > values of destination buffer and pitch. Move that code into the
> > > internal helper drm_fb_xfrm() and avoid quite a bit of duplucation.
> > >
> > > Signed-off-by: Thomas Zimmermann
> > > ---
> > > drivers/gpu/drm/drm_format_helper.c | 169 +++-
> > > 1 file changed, 64 insertions(+), 105 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/drm_format_helper.c
> > > b/drivers/gpu/drm/drm_format_helper.c
> > > index d296d181659d..35aebdb90165 100644
> > > --- a/drivers/gpu/drm/drm_format_helper.c
> > > +++ b/drivers/gpu/drm/drm_format_helper.c
> > > @@ -41,11 +41,11 @@ unsigned int drm_fb_clip_offset(unsigned int pitch,
> > > const struct drm_format_info
> > > }
> > > EXPORT_SYMBOL(drm_fb_clip_offset);
> > > -/* TODO: Make this functon work with multi-plane formats. */
> > > -static int drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
> > > dst_pixsize,
> > > -const void *vaddr, const struct drm_framebuffer *fb,
> > > -const struct drm_rect *clip, bool vaddr_cached_hint,
> > > -void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
> > > int npixels))
> > > +/* TODO: Make this function work with multi-plane formats. */
> > > +static int __drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned
> > > long dst_pixsize,
> > > + const void *vaddr, const struct drm_framebuffer *fb,
> > > + const struct drm_rect *clip, bool vaddr_cached_hint,
> > > + void (*xfrm_line)(void *dbuf, const void *sbuf,
> > > unsigned int npixels))
> > > {
> > > unsigned long linepixels = drm_rect_width(clip);
> > > unsigned long lines = drm_rect_height(clip);
> > > @@ -84,11 +84,11 @@ static int drm_fb_xfrm(void *dst, unsigned long
> > > dst_pitch, unsigned long dst_pix
> > > return 0;
> > > }
> > > -/* TODO: Make this functon work with multi-plane formats. */
> > > -static int drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
> > > unsigned long dst_pixsize,
> > > - const void *vaddr, const struct drm_framebuffer *fb,
> > > - const struct drm_rect *clip, bool vaddr_cached_hint,
> > > - void (*xfrm_line)(void *dbuf, const void *sbuf,
> > > unsigned int npixels))
> > > +/* TODO: Make this function work with multi-plane formats. */
> > > +static int __drm_fb_xfrm_toio(void __iomem *dst, unsigned long
> > > dst_pitch, unsigned long dst_pixsize,
> > > + const void *vaddr, const struct drm_framebuffer
> > > *fb,
> > > + const struct drm_rect *clip, bool
> > > vaddr_cached_hint,
> > > + void (*xfrm_line)(void *dbuf, const void *sbuf,
> > > unsigned int npixels))
> > > {
> > > unsigned long linepixels = drm_rect_width(clip);
> > > unsigned long lines = drm_rect_height(clip);
> > > @@ -129,6 +129,29 @@ static int drm_fb_xfrm_toio(void __iomem *dst,
> > > unsigned long dst_pitch, unsigned
> > > return 0;
> > > }
> > > +/* TODO: Make this function work with multi-plane formats. */
> > > +static int drm_fb_xfrm(struct iosys_map *dst,
> > > +const unsigned int *dst_pitch, const u8 *dst_pixsize,
> > > +const struct iosys_map *vmap, const struct
> > > drm_framebuffer *fb,
> > > +const struct drm_rect *clip, bool vaddr_cached_hint,
> > > +void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
> > > int npixels))
> > > +{
> > > + static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
> > > + 0, 0, 0, 0
> > > + };
> > > +
> > > + if (!dst_pitch)
> > > + dst_pitch = default_dst_pitch;
> > > +
> > > + if (dst[0].is_iomem)
> > > + return __drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0],
> > > dst_pixsize[0],
> > > + vmap[0].vaddr, fb, clip, false,
> > > xfrm_line);
> > > + else
> > > + return __drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], dst_pixsize[0],
> > > + vmap[0].vaddr, fb, clip, false, xfrm_line);
> > > +}
> > > +
> > > +
> >
> > Nit: Extra blank line
>
> Oh!
>
> >
> > > /**
> > >* drm_fb_memcpy - Copy clip buffer
> > >* @dst: Array of destination buffers
> > > @@ -213,14 +236,10 @@ void drm_fb_swab(struct iosys_map *dst, const
> > > unsigned int *dst_pitch,
> > >const struct iosys_map *vmap, const struct
> > > drm_framebuffer *fb,
> > >const struct drm_rect *clip, bool cached)
> > > {
> > > - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
> > > -
Re: [PATCH 12/12] drm/format-helper: Move destination-buffer handling into internal helper
Hi
Am 28.07.22 um 09:26 schrieb José Expósito:
Hi!
On Wed, Jul 27, 2022 at 01:33:12PM +0200, Thomas Zimmermann wrote:
The format-convertion helpers handle several cases for different
values of destination buffer and pitch. Move that code into the
internal helper drm_fb_xfrm() and avoid quite a bit of duplucation.
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/drm_format_helper.c | 169 +++-
1 file changed, 64 insertions(+), 105 deletions(-)
diff --git a/drivers/gpu/drm/drm_format_helper.c
b/drivers/gpu/drm/drm_format_helper.c
index d296d181659d..35aebdb90165 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -41,11 +41,11 @@ unsigned int drm_fb_clip_offset(unsigned int pitch, const
struct drm_format_info
}
EXPORT_SYMBOL(drm_fb_clip_offset);
-/* TODO: Make this functon work with multi-plane formats. */
-static int drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
dst_pixsize,
- const void *vaddr, const struct drm_framebuffer *fb,
- const struct drm_rect *clip, bool vaddr_cached_hint,
- void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
int npixels))
+/* TODO: Make this function work with multi-plane formats. */
+static int __drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
dst_pixsize,
+const void *vaddr, const struct drm_framebuffer *fb,
+const struct drm_rect *clip, bool vaddr_cached_hint,
+void (*xfrm_line)(void *dbuf, const void *sbuf,
unsigned int npixels))
{
unsigned long linepixels = drm_rect_width(clip);
unsigned long lines = drm_rect_height(clip);
@@ -84,11 +84,11 @@ static int drm_fb_xfrm(void *dst, unsigned long dst_pitch,
unsigned long dst_pix
return 0;
}
-/* TODO: Make this functon work with multi-plane formats. */
-static int drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
unsigned long dst_pixsize,
- const void *vaddr, const struct drm_framebuffer *fb,
- const struct drm_rect *clip, bool vaddr_cached_hint,
- void (*xfrm_line)(void *dbuf, const void *sbuf,
unsigned int npixels))
+/* TODO: Make this function work with multi-plane formats. */
+static int __drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
unsigned long dst_pixsize,
+ const void *vaddr, const struct drm_framebuffer
*fb,
+ const struct drm_rect *clip, bool
vaddr_cached_hint,
+ void (*xfrm_line)(void *dbuf, const void *sbuf,
unsigned int npixels))
{
unsigned long linepixels = drm_rect_width(clip);
unsigned long lines = drm_rect_height(clip);
@@ -129,6 +129,29 @@ static int drm_fb_xfrm_toio(void __iomem *dst, unsigned
long dst_pitch, unsigned
return 0;
}
+/* TODO: Make this function work with multi-plane formats. */
+static int drm_fb_xfrm(struct iosys_map *dst,
+ const unsigned int *dst_pitch, const u8 *dst_pixsize,
+ const struct iosys_map *vmap, const struct
drm_framebuffer *fb,
+ const struct drm_rect *clip, bool vaddr_cached_hint,
+ void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
int npixels))
+{
+ static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
+ 0, 0, 0, 0
+ };
+
+ if (!dst_pitch)
+ dst_pitch = default_dst_pitch;
+
+ if (dst[0].is_iomem)
+ return __drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0],
dst_pixsize[0],
+ vmap[0].vaddr, fb, clip, false,
xfrm_line);
+ else
+ return __drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], dst_pixsize[0],
+vmap[0].vaddr, fb, clip, false, xfrm_line);
+}
+
+
Nit: Extra blank line
Oh!
/**
* drm_fb_memcpy - Copy clip buffer
* @dst: Array of destination buffers
@@ -213,14 +236,10 @@ void drm_fb_swab(struct iosys_map *dst, const unsigned
int *dst_pitch,
const struct iosys_map *vmap, const struct drm_framebuffer *fb,
const struct drm_rect *clip, bool cached)
{
- static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
- 0, 0, 0, 0
- };
const struct drm_format_info *format = fb->format;
- u8 cpp = format->cpp[0];
void (*swab_line)(void *dbuf, const void *sbuf, unsigned int npixels);
- switch (cpp) {
+ switch (format->cpp[0]) {
case 4:
swab_line = drm_fb_swab32_line;
break;
@@ -230,21 +249,10 @@ void drm_fb_swab(struct iosys_map *dst, const unsigned
int *dst_pitch,
default:
drm_warn_once(fb->dev, "Format %p4cc has unsupported pixel
Re: [PATCH 12/12] drm/format-helper: Move destination-buffer handling into internal helper
Hi!
On Wed, Jul 27, 2022 at 01:33:12PM +0200, Thomas Zimmermann wrote:
> The format-convertion helpers handle several cases for different
> values of destination buffer and pitch. Move that code into the
> internal helper drm_fb_xfrm() and avoid quite a bit of duplucation.
>
> Signed-off-by: Thomas Zimmermann
> ---
> drivers/gpu/drm/drm_format_helper.c | 169 +++-
> 1 file changed, 64 insertions(+), 105 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_format_helper.c
> b/drivers/gpu/drm/drm_format_helper.c
> index d296d181659d..35aebdb90165 100644
> --- a/drivers/gpu/drm/drm_format_helper.c
> +++ b/drivers/gpu/drm/drm_format_helper.c
> @@ -41,11 +41,11 @@ unsigned int drm_fb_clip_offset(unsigned int pitch, const
> struct drm_format_info
> }
> EXPORT_SYMBOL(drm_fb_clip_offset);
>
> -/* TODO: Make this functon work with multi-plane formats. */
> -static int drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
> dst_pixsize,
> -const void *vaddr, const struct drm_framebuffer *fb,
> -const struct drm_rect *clip, bool vaddr_cached_hint,
> -void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
> int npixels))
> +/* TODO: Make this function work with multi-plane formats. */
> +static int __drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long
> dst_pixsize,
> + const void *vaddr, const struct drm_framebuffer *fb,
> + const struct drm_rect *clip, bool vaddr_cached_hint,
> + void (*xfrm_line)(void *dbuf, const void *sbuf,
> unsigned int npixels))
> {
> unsigned long linepixels = drm_rect_width(clip);
> unsigned long lines = drm_rect_height(clip);
> @@ -84,11 +84,11 @@ static int drm_fb_xfrm(void *dst, unsigned long
> dst_pitch, unsigned long dst_pix
> return 0;
> }
>
> -/* TODO: Make this functon work with multi-plane formats. */
> -static int drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
> unsigned long dst_pixsize,
> - const void *vaddr, const struct drm_framebuffer *fb,
> - const struct drm_rect *clip, bool vaddr_cached_hint,
> - void (*xfrm_line)(void *dbuf, const void *sbuf,
> unsigned int npixels))
> +/* TODO: Make this function work with multi-plane formats. */
> +static int __drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch,
> unsigned long dst_pixsize,
> + const void *vaddr, const struct drm_framebuffer
> *fb,
> + const struct drm_rect *clip, bool
> vaddr_cached_hint,
> + void (*xfrm_line)(void *dbuf, const void *sbuf,
> unsigned int npixels))
> {
> unsigned long linepixels = drm_rect_width(clip);
> unsigned long lines = drm_rect_height(clip);
> @@ -129,6 +129,29 @@ static int drm_fb_xfrm_toio(void __iomem *dst, unsigned
> long dst_pitch, unsigned
> return 0;
> }
>
> +/* TODO: Make this function work with multi-plane formats. */
> +static int drm_fb_xfrm(struct iosys_map *dst,
> +const unsigned int *dst_pitch, const u8 *dst_pixsize,
> +const struct iosys_map *vmap, const struct
> drm_framebuffer *fb,
> +const struct drm_rect *clip, bool vaddr_cached_hint,
> +void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned
> int npixels))
> +{
> + static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
> + 0, 0, 0, 0
> + };
> +
> + if (!dst_pitch)
> + dst_pitch = default_dst_pitch;
> +
> + if (dst[0].is_iomem)
> + return __drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0],
> dst_pixsize[0],
> + vmap[0].vaddr, fb, clip, false,
> xfrm_line);
> + else
> + return __drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], dst_pixsize[0],
> + vmap[0].vaddr, fb, clip, false, xfrm_line);
> +}
> +
> +
Nit: Extra blank line
> /**
> * drm_fb_memcpy - Copy clip buffer
> * @dst: Array of destination buffers
> @@ -213,14 +236,10 @@ void drm_fb_swab(struct iosys_map *dst, const unsigned
> int *dst_pitch,
>const struct iosys_map *vmap, const struct drm_framebuffer *fb,
>const struct drm_rect *clip, bool cached)
> {
> - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
> - 0, 0, 0, 0
> - };
> const struct drm_format_info *format = fb->format;
> - u8 cpp = format->cpp[0];
> void (*swab_line)(void *dbuf, const void *sbuf, unsigned int npixels);
>
> - switch (cpp) {
> + switch (format->cpp[0]) {
> case 4:
> swab_line = drm_fb_swab32_line;
> break;
> @@ -230,21 +249,10 @@ void drm_fb_swab(struct iosys_map *dst, const unsigned
> int *dst_pitch,
> default:
>
