[RFT PATCH v2 4/4] drm/msm/dpu: enable writeback on SM6350
Luca Weiss
luca.weiss at fairphone.com
Tue Dec 19 15:39:34 UTC 2023
On Sun Dec 3, 2023 at 1:32 AM CET, Dmitry Baryshkov wrote:
> Enable WB2 hardware block, enabling writeback support on this platform.
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
Hi Dmitry,
I've tried this on sm7225-fairphone-fp4 but having trouble testing this.
I guess I'm using some ID wrong with modetest, could you check and see
what I do wrong?
libdrm is on version 2.4.118 from Alpine Linux/postmarketOS, kernel is
v6.7.0-rc6 plus a few patches for hardware enablement (like display).
See log:
fairphone-fp4:~$ sudo modetest -ac
trying to open device 'i915'...failed
trying to open device 'amdgpu'...failed
trying to open device 'radeon'...failed
trying to open device 'nouveau'...failed
trying to open device 'vmwgfx'...failed
trying to open device 'omapdrm'...failed
trying to open device 'exynos'...failed
trying to open device 'tilcdc'...failed
trying to open device 'msm'...done
Connectors:
id encoder status name size (mm) modes encoders
32 31 connected DSI-1 65x115 1 31
modes:
index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot
#0 1080x2340 60.00 1080 1108 1116 1124 2340 2367 2372 2377 160304 flags: ; type: preferred, driver
props:
1 EDID:
flags: immutable blob
blobs:
value:
2 DPMS:
flags: enum
enums: On=0 Standby=1 Suspend=2 Off=3
value: 0
5 link-status:
flags: enum
enums: Good=0 Bad=1
value: 0
6 non-desktop:
flags: immutable range
values: 0 1
value: 0
4 TILE:
flags: immutable blob
blobs:
value:
20 CRTC_ID:
flags: object
value: 63
38 0 unknown Writeback-1 0x0 0 33
props:
2 DPMS:
flags: enum
enums: On=0 Standby=1 Suspend=2 Off=3
value: 0
5 link-status:
flags: enum
enums: Good=0 Bad=1
value: 0
6 non-desktop:
flags: immutable range
values: 0 1
value: 0
4 TILE:
flags: immutable blob
blobs:
value:
20 CRTC_ID:
flags: object
value: 0
36 WRITEBACK_OUT_FENCE_PTR:
flags: range
values: 0 18446744073709551615
value: 0
34 WRITEBACK_FB_ID:
flags: object
value: 0
35 WRITEBACK_PIXEL_FORMATS:
flags: immutable blob
blobs:
value:
52473136424731365247323441523234
52413234414232345852323452583234
58423234415231355241313558523135
52583135415231325241313252583132
58523132424731364247323441423234
42413234425832345842323441423135
42413135584231354258313541423132
424131324258313258423132
fairphone-fp4:~$ sudo cat /sys/kernel/debug/dri/0/state
plane[39]: plane-0
crtc=crtc-0
fb=66
allocated by = phoc
refcount=2
format=XR24 little-endian (0x34325258)
modifier=0x500000000000001
size=1080x2340
layers:
size[0]=1080x2340
pitch[0]=4352
offset[0]=0
obj[0]:
name=0
refcount=3
start=00101fec
size=10485760
imported=no
crtc-pos=1080x2340+0+0
src-pos=1080.000000x2340.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
stage=1
sspp[0]=sspp_0
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=1080x2340+0+0
dst[0]=1080x2340+0+0
plane[45]: plane-1
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
stage=0
sspp[0]=sspp_8
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[51]: plane-2
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
stage=0
sspp[0]=sspp_9
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
plane[57]: plane-3
crtc=(null)
fb=0
crtc-pos=0x0+0+0
src-pos=0.000000x0.000000+0.000000+0.000000
rotation=1
normalized-zpos=0
color-encoding=ITU-R BT.601 YCbCr
color-range=YCbCr limited range
stage=0
sspp[0]=sspp_10
multirect_mode[0]=none
multirect_index[0]=solo
src[0]=0x0+0+0
dst[0]=0x0+0+0
crtc[63]: crtc-0
enable=1
active=1
self_refresh_active=0
planes_changed=1
mode_changed=0
active_changed=0
connectors_changed=0
color_mgmt_changed=0
plane_mask=1
connector_mask=1
encoder_mask=1
mode: "1080x2340": 60 160304 1080 1108 1116 1124 2340 2367 2372 2377 0x48 0x0
lm[0]=0
ctl[0]=0
crtc[64]: crtc-1
enable=0
active=0
self_refresh_active=0
planes_changed=0
mode_changed=0
active_changed=0
connectors_changed=0
color_mgmt_changed=0
plane_mask=0
connector_mask=0
encoder_mask=0
mode: "": 0 0 0 0 0 0 0 0 0 0 0x0 0x0
connector[32]: DSI-1
crtc=crtc-0
self_refresh_aware=0
max_requested_bpc=0
colorspace=Default
connector[38]: Writeback-1
crtc=(null)
self_refresh_aware=0
max_requested_bpc=0
colorspace=Default
fairphone-fp4:~$ sudo modetest -M msm -a -s 38 at 64:1080x2340 -o test.d -P 45 at 64:1080x2340
failed to find mode "1080x2340" for connector 38
no mode for writeback
failed to set gamma: Permission denied
testing 1080x2340 at XR24 on plane 45, crtc 64
Atomic Commit failed [1]
Regards
Luca
> ---
> .../drm/msm/disp/dpu1/catalog/dpu_6_4_sm6350.h | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_6_4_sm6350.h b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_6_4_sm6350.h
> index 62db84bd15f2..3c179a73c030 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_6_4_sm6350.h
> +++ b/drivers/gpu/drm/msm/disp/dpu1/catalog/dpu_6_4_sm6350.h
> @@ -27,6 +27,7 @@ static const struct dpu_mdp_cfg sm6350_mdp = {
> [DPU_CLK_CTRL_DMA0] = { .reg_off = 0x2ac, .bit_off = 8 },
> [DPU_CLK_CTRL_DMA1] = { .reg_off = 0x2b4, .bit_off = 8 },
> [DPU_CLK_CTRL_DMA2] = { .reg_off = 0x2c4, .bit_off = 8 },
> + [DPU_CLK_CTRL_WB2] = { .reg_off = 0x2bc, .bit_off = 16 },
> [DPU_CLK_CTRL_REG_DMA] = { .reg_off = 0x2bc, .bit_off = 20 },
> },
> };
> @@ -146,6 +147,21 @@ static const struct dpu_dsc_cfg sm6350_dsc[] = {
> },
> };
>
> +static const struct dpu_wb_cfg sm6350_wb[] = {
> + {
> + .name = "wb_2", .id = WB_2,
> + .base = 0x65000, .len = 0x2c8,
> + .features = WB_SM8250_MASK,
> + .format_list = wb2_formats,
> + .num_formats = ARRAY_SIZE(wb2_formats),
> + .clk_ctrl = DPU_CLK_CTRL_WB2,
> + .xin_id = 6,
> + .vbif_idx = VBIF_RT,
> + .maxlinewidth = 1920,
> + .intr_wb_done = DPU_IRQ_IDX(MDP_SSPP_TOP0_INTR, 4),
> + },
> +};
> +
> static const struct dpu_intf_cfg sm6350_intf[] = {
> {
> .name = "intf_0", .id = INTF_0,
> @@ -219,6 +235,8 @@ const struct dpu_mdss_cfg dpu_sm6350_cfg = {
> .dsc = sm6350_dsc,
> .pingpong_count = ARRAY_SIZE(sm6350_pp),
> .pingpong = sm6350_pp,
> + .wb_count = ARRAY_SIZE(sm6350_wb),
> + .wb = sm6350_wb,
> .intf_count = ARRAY_SIZE(sm6350_intf),
> .intf = sm6350_intf,
> .vbif_count = ARRAY_SIZE(sdm845_vbif),
More information about the dri-devel
mailing list