From: Duncan Ma <[email protected]> [Why & How] DMUB shall be notified on driver hardware release. Implement notification.
Reviewed-by: Duncan Ma <[email protected]> Signed-off-by: Duncan Ma <[email protected]> Signed-off-by: Ivan Lipski <[email protected]> --- drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c | 17 +++++++++++++++++ drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h | 6 ++++++ 2 files changed, 23 insertions(+) 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 c10e603b54af..b4525b1fc11b 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.c @@ -2176,3 +2176,20 @@ bool dmub_lsdma_send_poll_reg_write_command(struct dc_dmub_srv *dc_dmub_srv, uin return result; } +void dc_dmub_srv_release_hw(const struct dc *dc) +{ + struct dc_dmub_srv *dc_dmub_srv = dc->ctx->dmub_srv; + union dmub_rb_cmd cmd = {0}; + + if (!dc_dmub_srv || !dc_dmub_srv->dmub) + return; + + memset(&cmd, 0, sizeof(cmd)); + cmd.idle_opt_notify_idle.header.type = DMUB_CMD__IDLE_OPT; + cmd.idle_opt_notify_idle.header.sub_type = DMUB_CMD__IDLE_OPT_RELEASE_HW; + cmd.idle_opt_notify_idle.header.payload_bytes = + sizeof(cmd.idle_opt_notify_idle) - + sizeof(cmd.idle_opt_notify_idle.header); + + dm_execute_dmub_cmd(dc->ctx, &cmd, DM_DMUB_WAIT_TYPE_WAIT); +} diff --git a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h index 1f1c155be30e..8ea320f21269 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h +++ b/drivers/gpu/drm/amd/display/dc/dc_dmub_srv.h @@ -291,4 +291,10 @@ bool dc_dmub_srv_ips_query_residency_info(const struct dc_context *ctx, uint8_t struct dmub_ips_residency_info *driver_info, enum ips_residency_mode ips_mode); +/** + * dc_dmub_srv_release_hw() - Notifies DMUB service that HW access is no longer required. + * + * @dc - pointer to DC object + */ +void dc_dmub_srv_release_hw(const struct dc *dc); #endif /* _DMUB_DC_SRV_H_ */ -- 2.43.0
