diff options
| author | Wyatt Wood <wyatt.wood@amd.com> | 2020-04-05 16:40:43 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-04-09 10:43:16 -0400 |
| commit | c5d5b0ecf9c849c23e167965d88e609958cd805d (patch) | |
| tree | 36449f8c49dd3b02c46a1f478bde94a66efea44b /drivers/gpu/drm/amd/display/dmub | |
| parent | c06a545ae531bd8f791dc41b787822512eb65c5d (diff) | |
| download | linux-c5d5b0ecf9c849c23e167965d88e609958cd805d.tar.bz2 | |
drm/amd/display: Implement abm config table copy to dmcub
[Why]
Driver must pass abm config table to dmub fw. This provides various
parameters for abm functionality.
[How]
There is too much data to be passed in an inbox message, so we must pass
this data using an indirect buffer. Copy the table to cw7 via x86,
driver copies to fw_state structure.
Signed-off-by: Wyatt Wood <wyatt.wood@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dmub')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/inc/dmub_srv.h | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c | 2 |
2 files changed, 11 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_srv.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_srv.h index c2671f2616c8..af678462f0e6 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_srv.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_srv.h @@ -565,6 +565,16 @@ dmub_srv_send_gpint_command(struct dmub_srv *dmub, enum dmub_status dmub_srv_get_gpint_response(struct dmub_srv *dmub, uint32_t *response); +/** + * dmub_flush_buffer_mem() - Read back entire frame buffer region. + * This ensures that the write from x86 has been flushed and will not + * hang the DMCUB. + * @fb: frame buffer to flush + * + * Can be called after software initialization. + */ +void dmub_flush_buffer_mem(const struct dmub_fb *fb); + #if defined(__cplusplus) } #endif diff --git a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c index ce32cc7933c4..0be8a54cc475 100644 --- a/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c @@ -70,7 +70,7 @@ static inline uint32_t dmub_align(uint32_t val, uint32_t factor) return (val + factor - 1) / factor * factor; } -static void dmub_flush_buffer_mem(const struct dmub_fb *fb) +void dmub_flush_buffer_mem(const struct dmub_fb *fb) { const uint8_t *base = (const uint8_t *)fb->cpu_addr; uint8_t buf[64]; |