Re:Re: [PATCH v5 05/18] drm/rockchip: vop2: Set AXI id for rk3588

["Andy Yan" <andyshrk@163.com>]

Hi Detlev,

At 2024-12-11 23:45:01, "Detlev Casanova" <detlev.casanova@collabora.com> wrote:
>On Wednesday, 11 December 2024 01:34:34 EST Andy Yan wrote:
>> Hi Detlev,
>> 
>> At 2024-12-11 02:40:14, "Detlev Casanova" <detlev.casanova@collabora.com> 
>wrote:
>> >Hi Andy,
>> >
>> >On Monday, 9 December 2024 07:29:18 EST Andy Yan wrote:
>> >> From: Andy Yan <andy.yan@rock-chips.com>
>> >> 
>> >> There are two AXI bus in vop2, windows attached on the same bus must
>> >> have a unique channel YUV and RGB channel ID.
>> >> 
>> >> The default IDs will conflict with each other on the rk3588, so they
>> >> need to be reassigned.
>> >> 
>> >> Fixes: 5a028e8f062f ("drm/rockchip: vop2: Add support for rk3588")
>> >> Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
>> >> Tested-by: Derek Foreman <derek.foreman@collabora.com>
>> >> 
>> >> ---
>> >> 
>> >> Changes in v5:
>> >> - Added in V5
>> >> 
>> >>  drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 14 +++++++++++
>> >>  drivers/gpu/drm/rockchip/rockchip_drm_vop2.h |  9 +++++++
>> >>  drivers/gpu/drm/rockchip/rockchip_vop2_reg.c | 26 +++++++++++++++++++-
>> >>  3 files changed, 48 insertions(+), 1 deletion(-)
>> >> 
>> >> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
>> >> b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c index
>> >> dc4edd65bc9e..8b9ca046eeeb 100644
>> >> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
>> >> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
>> >> @@ -1426,6 +1426,12 @@ static void vop2_plane_atomic_update(struct
>> >> drm_plane *plane, &fb->format->format,
>> >> 
>> >>  		afbc_en ? "AFBC" : "", &yrgb_mst);
>> >> 
>> >> +	if (vop2->data->soc_id > 3568) {
>> >
>> >Shouldn't this be done only for rk3588, as specified in the comments below
>> >? The test we did before showed that it is failing on rk3576 and 3576 is >
>> >3588.
>> I think this is because you tested before with the patch I gave Derek 
>> without axi id assigned for rk3576.
>> I assigned axi id for rk3576 in this version 18/18（The new ID assignment can
>> adapt to more application scenarios.）, can you test it with the whole V5
>> version again?
>
>Yes, I will do that. But patch 18 mentions:
>+       /* Read only bit on rk3576*/
>+       [VOP2_WIN_AXI_BUS_ID] = REG_FIELD(RK3568_CLUSTER_CTRL, 13, 13),
>
>And the bit is being written here. If it is indeed writable, then I would drop 
>that comment.
The AXI_BUS_ID for two Cluster windows on RK3576 are fixed by hardware, that means
whether we write it or not, it won't change anything.
But the AXI_BUS_ID for Esmart windows on rk3576 and  AXI_YRGB/UV_R_ID for all
cluster/esmart windows on rk3576 are writeable.
I think we directly write it here as the current code can make things easy.



>
>> >I suggest
>> >
>> >	if (vop2->data->soc_id == 3588) {
>> >
>> >Regards,
>> >Detlev
>> >
>> >> +		vop2_win_write(win, VOP2_WIN_AXI_BUS_ID, win->data-
>> >>
>> >>axi_bus_id);
>> >>
>> >> +		vop2_win_write(win, VOP2_WIN_AXI_YRGB_R_ID, win->data-
>> >>
>> >>axi_yrgb_r_id);
>> >>
>> >> +		vop2_win_write(win, VOP2_WIN_AXI_UV_R_ID, win->data-
>> >>
>> >>axi_uv_r_id);
>> >>
>> >> +	}
>> >> +
>> >> 
>> >>  	if (vop2_cluster_window(win))
>> >>  	
>> >>  		vop2_win_write(win, VOP2_WIN_AFBC_HALF_BLOCK_EN,
>> >
>> >half_block_en);
>> >
>
>Detlev.
>
>
>
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