diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c index dadeaa9c92dd..a65c485b0b49 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c @@ -1233,8 +1233,16 @@ static void dc_dmub_srv_exit_low_power_state(const struct dc *dc) if (!(allow_state & DMUB_IPS2_ALLOW_MASK)) { // Wait for evaluation time - udelay(dc->debug.ips2_eval_delay_us); - commit_state = dc->hwss.get_idle_state(dc); + for (;;) { + udelay(dc->debug.ips2_eval_delay_us); + commit_state = dc->hwss.get_idle_state(dc); + if (commit_state & DMUB_IPS2_ALLOW_MASK) + break; + + /* allow was still set, retry eval delay */ + dc->hwss.set_idle_state(dc, false); + } + if (!(commit_state & DMUB_IPS2_COMMIT_MASK)) { // Tell PMFW to exit low power state dc->clk_mgr->funcs->exit_low_power_state(dc->clk_mgr); |