diff options
| author | Wenjing Liu <Wenjing.Liu@amd.com> | 2019-03-05 19:28:10 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2019-06-22 09:34:10 -0500 |
| commit | 6c5be4ac630805d3a3b20157a0c6421ef815fe78 (patch) | |
| tree | 66d30c620de5ac8529b3e38fb365c2c7b2b8586b /drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c | |
| parent | 64f223b0dd120040ce74b0e2d493ee676c921c4a (diff) | |
drm/amd/display: add global master update lock for DCN2
[why]
when an update programming sequence requires both
front end and back end pipe to be updated synchronously,
a global update lock needs to be set to ensure that
we don't get a frame with only front end update but
not the back end update.
[how]
setup global lock parameters on enable_stream_timing.
enable global lock when pipe_control_lock_global is called.
disable global lock when pipe_control_lock is called.
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c | 63 |
1 files changed, 62 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c index 43e71b4ab5e8..ea6a19063b22 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn20/dcn20_optc.c @@ -330,6 +330,65 @@ void optc2_triplebuffer_unlock(struct timing_generator *optc) } + +void optc2_setup_global_lock(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + uint32_t v_blank_start = 0; + uint32_t h_blank_start = 0, h_total = 0; + + REG_SET(OTG_GLOBAL_CONTROL1, 0, MASTER_UPDATE_LOCK_DB_EN, 1); + + REG_SET(OTG_GLOBAL_CONTROL2, 0, DIG_UPDATE_LOCATION, 20); + + REG_GET(OTG_V_BLANK_START_END, OTG_V_BLANK_START, &v_blank_start); + + REG_GET(OTG_H_BLANK_START_END, OTG_H_BLANK_START, &h_blank_start); + + REG_GET(OTG_H_TOTAL, OTG_H_TOTAL, &h_total); + REG_UPDATE_2(OTG_GLOBAL_CONTROL1, + MASTER_UPDATE_LOCK_DB_X, + h_blank_start - 200 - 1, + MASTER_UPDATE_LOCK_DB_Y, + v_blank_start - 1); +} + +void optc2_lock_global(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_UPDATE(OTG_GLOBAL_CONTROL2, GLOBAL_UPDATE_LOCK_EN, 1); + + REG_SET(OTG_GLOBAL_CONTROL0, 0, + OTG_MASTER_UPDATE_LOCK_SEL, optc->inst); + REG_SET(OTG_MASTER_UPDATE_LOCK, 0, + OTG_MASTER_UPDATE_LOCK, 1); + + /* Should be fast, status does not update on maximus */ + if (optc->ctx->dce_environment != DCE_ENV_FPGA_MAXIMUS) + REG_WAIT(OTG_MASTER_UPDATE_LOCK, + UPDATE_LOCK_STATUS, 1, + 1, 10); +} + +void optc2_lock(struct timing_generator *optc) +{ + struct optc *optc1 = DCN10TG_FROM_TG(optc); + + REG_UPDATE(OTG_GLOBAL_CONTROL2, GLOBAL_UPDATE_LOCK_EN, 0); + + REG_SET(OTG_GLOBAL_CONTROL0, 0, + OTG_MASTER_UPDATE_LOCK_SEL, optc->inst); + REG_SET(OTG_MASTER_UPDATE_LOCK, 0, + OTG_MASTER_UPDATE_LOCK, 1); + + /* Should be fast, status does not update on maximus */ + if (optc->ctx->dce_environment != DCE_ENV_FPGA_MAXIMUS) + REG_WAIT(OTG_MASTER_UPDATE_LOCK, + UPDATE_LOCK_STATUS, 1, + 1, 10); +} + void optc2_lock_doublebuffer_enable(struct timing_generator *optc) { struct optc *optc1 = DCN10TG_FROM_TG(optc); @@ -424,8 +483,10 @@ static struct timing_generator_funcs dcn20_tg_funcs = { .triplebuffer_lock = optc2_triplebuffer_lock, .triplebuffer_unlock = optc2_triplebuffer_unlock, .disable_reset_trigger = optc1_disable_reset_trigger, - .lock = optc1_lock, + .lock = optc2_lock, .unlock = optc1_unlock, + .lock_global = optc2_lock_global, + .setup_global_lock = optc2_setup_global_lock, .lock_doublebuffer_enable = optc2_lock_doublebuffer_enable, .lock_doublebuffer_disable = optc2_lock_doublebuffer_disable, .enable_optc_clock = optc1_enable_optc_clock, |