Hi Ville,
> On Aug 27, 2020, at 12:24 AM, Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
>
> On Wed, Aug 26, 2020 at 01:21:15PM +0800, Kai-Heng Feng wrote:
>> LSPCON only supports 8 bpc for RGB/YCbCr444.
>>
>> Set the correct bpp otherwise it renders blank screen.
>
> Hmm. Does
> git://github.com/vsyrjala/linux.git dp_downstream_ports_5
> work?
>
> Actually better make that dp_downstream_ports_5^^^^^^^^^^^ aka.
> 54d846ce62a2 ("drm/i915: Do YCbCr 444->420 conversion via DP protocol
> converters") to avoid the experiments and hacks I have sitting on top.
Can you please rebase it to mainline master or drm-tip?
I am getting errors on the branch:
DESCEND objtool
CALL scripts/atomic/check-atomics.sh
CALL scripts/checksyscalls.sh
CHK include/generated/compile.h
Building modules, stage 2.
MODPOST 166 modules
LD arch/x86/boot/compressed/vmlinux
ld: arch/x86/boot/compressed/pgtable_64.o:(.bss+0x0): multiple definition of `__force_order'; arch/x86/boot/compressed/kaslr_64.o:(.bss+0x0): first defined here
ld: arch/x86/boot/compressed/head_64.o: warning: relocation in read-only section `.head.text'
ld: warning: creating DT_TEXTREL in a PIE
make[2]: *** [arch/x86/boot/compressed/Makefile:119: arch/x86/boot/compressed/vmlinux] Error 1
make[1]: *** [arch/x86/boot/Makefile:113: arch/x86/boot/compressed/vmlinux] Error 2
make: *** [arch/x86/Makefile:284: bzImage] Error 2
make: *** Waiting for unfinished jobs....
Kai-Heng
>
>>
>> Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/2195
>> Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx>
>> ---
>> drivers/gpu/drm/i915/display/intel_lspcon.c | 3 ++-
>> 1 file changed, 2 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/i915/display/intel_lspcon.c b/drivers/gpu/drm/i915/display/intel_lspcon.c
>> index b781bf469644..c7a44fcaade8 100644
>> --- a/drivers/gpu/drm/i915/display/intel_lspcon.c
>> +++ b/drivers/gpu/drm/i915/display/intel_lspcon.c
>> @@ -196,7 +196,8 @@ void lspcon_ycbcr420_config(struct drm_connector *connector,
>> crtc_state->port_clock /= 2;
>> crtc_state->output_format = INTEL_OUTPUT_FORMAT_YCBCR444;
>> crtc_state->lspcon_downsampling = true;
>> - }
>> + } else
>> + crtc_state->pipe_bpp = 24;
>> }
>>
>> static bool lspcon_probe(struct intel_lspcon *lspcon)
>> --
>> 2.17.1
>
> --
> Ville Syrjälä
> Intel
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