(cc'ing dri-devel. It's public information that others should be able to
find.)
Hi Mark,
generally speaking, what you try to do should be possible with
fbconv/fbdevdrm.
Am 17.08.20 um 21:12 schrieb Nnext unnnext:
> Hey Thomas!
>
> I am working on postmarketOS, mobile Alpine
On Wed, Mar 27, 2019 at 10:37 AM Thomas Zimmermann wrote:
>
> Hi
>
> Am 26.03.19 um 14:33 schrieb Mathieu Malaterre:
> >
> > ...
> > ../drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.c:174:2: note: in expansion
> > of macro 'do_div'
> > do_div(width,
On Wed, Mar 27, 2019 at 09:28:49AM +0100, Thomas Zimmermann wrote:
> Hi
>
> Am 26.03.19 um 17:29 schrieb Ville Syrjälä:
> >> +
> >> +static bool is_c8(const struct fb_info* fb_info)
> >> +{
> >> + return fb_info->var.bits_per_pixel == 8;
> >> +}
> >> +
> >> +static bool is_rgb565_be(const struct
Hi
Am 26.03.19 um 14:33 schrieb Mathieu Malaterre:
>
> ...
> ../drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.c:174:2: note: in expansion
> of macro 'do_div'
> do_div(width, cpp);
> ^~
> In file included from ./arch/powerpc/include/generated/asm/div64.h:1,
>
On Tue, Mar 26, 2019 at 10:18 AM Thomas Zimmermann wrote:
>
> Signed-off-by: Thomas Zimmermann
> ---
> drivers/gpu/drm/fbdevdrm/Makefile | 1 +
> drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.c | 42 ++
> drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.h | 7 +
> dri
Hi
Am 26.03.19 um 17:47 schrieb Ville Syrjälä:
>> +static int connector_helper_get_modes(struct drm_connector *connector)
>> +{
>> +struct fbdevdrm_modeset *modeset;
>> +struct list_head *pos;
>> +int ret, num_modes = 0;
>> +
>> +modeset = fbdevdrm_modeset_of_connector(connector);
Hi
Am 26.03.19 um 17:29 schrieb Ville Syrjälä:
>> +
>> +static bool is_c8(const struct fb_info* fb_info)
>> +{
>> +return fb_info->var.bits_per_pixel == 8;
>> +}
>> +
>> +static bool is_rgb565_be(const struct fb_info* fb_info)
>> +{
>> +return (fb_info->var.bits_per_pixel == 16) &&
>> +
On Wed, Mar 27, 2019 at 8:55 AM Thomas Zimmermann wrote:
> This all comes from using the event-reporting mechanism to hook into the
> fbdev module. Daniel suggested to copy over some of the fbdev drivers
> for porting, which would solve the problem.
On the fbdev event reporting stuff: I have a pa
t;S3 Virge/DX");
>> +}
>
> This seems odd. s3fb sets fix.accel to NULL unconditionally AFAICT, not
> sure why you're testing for that explicitly.
If accel is 0, it might be a generic driver. Hence, fbdevdrm ignored
s3fb, so I added the exception.
> I do have a question thoug
ften, a list of
> > previously set modes. A later update to the mode detection could also
> > take into account the modes in fb_monspecs::modedb or test pre-defined
> > VESA modes.
> >
> > Signed-off-by: Thomas Zimmermann
> > ---
> > drivers/gpu/drm/fbdevdrm/fbdevdrm
so
> take into account the modes in fb_monspecs::modedb or test pre-defined
> VESA modes.
>
> Signed-off-by: Thomas Zimmermann
> ---
> drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.c | 163 +++-
> 1 file changed, 162 insertions(+), 1 deletion(-)
>
> d
On Tue, Mar 26, 2019 at 10:17:40AM +0100, Thomas Zimmermann wrote:
> Signed-off-by: Thomas Zimmermann
> ---
> drivers/gpu/drm/fbdevdrm/Makefile | 1 +
> drivers/gpu/drm/fbdevdrm/fbdevdrm_format.c | 441 +
> drivers/gpu/drm/fbdevdrm/fbdevdrm_format.
On Tue, 2019-03-26 at 10:17 +0100, Thomas Zimmermann wrote:
> +static bool is_generic_driver(const struct fb_info *fb_info)
> +{
> + /* DRM porting note: We don't want to bind to vga16fb, vesafb, or any
> + * other generic fbdev driver. Usually, these drivers have limited
> + * capab
Hi
Am 26.03.19 um 14:33 schrieb Mathieu Malaterre:
> A simple compile/test here leads to:
>
> ...
> ../drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.c:174:2: note: in expansion
> of macro 'do_div'
> do_div(width, cpp);
> ^~
> In file included from ./arch/power
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/fbdevdrm/fbdevdrm_drv.c | 77 +
1 file changed, 77 insertions(+)
diff --git a/drivers/gpu/drm/fbdevdrm/fbdevdrm_drv.c
b/drivers/gpu/drm/fbdevdrm/fbdevdrm_drv.c
index 4a6ba6c85c5c..4724e3df6ace 100644
--- a/drivers/gpu
Modesetting for fbdevdrm supports a single display pipeline with CRTC,
primary plane, encoder and connector.
The fbdev device would have been an ideal candidate for using
|struct drm_simple_display_pipe|. To better illustrate the conversion
from fbdev to DRM drivers, fbdevdrm used the regular DRM
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.c | 150 +++-
1 file changed, 149 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.c
b/drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.c
index 3473b85acbf1..87f56ec76edf
There's an fbdevdrm device for each supported fbdev device. The fbdevdrm
driver listens for fb events, and creates and destroys fbdevdrm devices
accordingly.
Only hardware-specific fbdev drivers are supported. Generic drivers, such
as vga16fb or vesafb are not handled. DRM-based fbdev driver
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/fbdevdrm/Makefile | 1 +
drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.c | 42 ++
drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.h | 7 +
drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.c | 9 +-
drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.h
.
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.c | 163 +++-
1 file changed, 162 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.c
b/drivers/gpu/drm/fbdevdrm/fbdevdrm_modeset.c
index 87f56ec76edf..e89eca4b58df
Memory management in fbdevdrm is provided by TTM. Fbdev implements page
flipping via display pan operations, which require scanout buffers to be
aligned at scanline boundaries. At the same time memory-mapping operations
of individual buffers requires page alignment of each buffer. Fbdevdrm
ensures
The fbdevdrm driver runs DRM on top of fbdev framebuffer drivers. It allows
for using legacy drivers with modern userspace and gives a template for
converting fbdev drivers to DRM.
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/Kconfig | 2 +
drivers/gpu/drm/Makefile
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/fbdevdrm/Makefile | 1 +
drivers/gpu/drm/fbdevdrm/fbdevdrm_format.c | 441 +
drivers/gpu/drm/fbdevdrm/fbdevdrm_format.h | 26 ++
3 files changed, 468 insertions(+)
create mode 100644 drivers/gpu/drm/fbdevdrm
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/fbdevdrm/fbdevdrm_drv.c | 29 -
1 file changed, 28 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/fbdevdrm/fbdevdrm_drv.c
b/drivers/gpu/drm/fbdevdrm/fbdevdrm_drv.c
index 5be902094dc6..4a6ba6c85c5c 100644
Signed-off-by: Thomas Zimmermann
---
drivers/gpu/drm/fbdevdrm/Makefile | 1 +
drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.c | 153 ++
drivers/gpu/drm/fbdevdrm/fbdevdrm_modes.h | 46 +++
3 files changed, 200 insertions(+)
create mode 100644 drivers/gpu/drm/fbdevdrm
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