From 4573388c92ee60b4ed72b8d95b73df861189988c Mon Sep 17 00:00:00 2001 From: Alex Deucher <alexander.deucher@amd.com> Date: Thu, 10 Oct 2013 12:31:43 -0400 Subject: [PATCH] drm/radeon/si: tell dpm there is a display connected On SI asics, the SMC will automatically force the performance level to the lowest level if there are no displays active. This prevents automatic performance scaling on PowerXpress systems or for offscreen rendering or compute when displays are disabled. Going forward, it would be best to dynamically change this, but for now leave scaling enabled. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=69395 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> --- drivers/gpu/drm/radeon/si_dpm.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index 9ace28702c76..fc8b1ffc64b3 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -3589,7 +3589,12 @@ static void si_program_display_gap(struct radeon_device *rdev) WREG32(DCCG_DISP_SLOW_SELECT_REG, tmp); } - si_notify_smc_display_change(rdev, rdev->pm.dpm.new_active_crtc_count > 0); + /* Setting this to false forces the performance state to low if the crtcs are disabled. + * This can be a problem on PowerXpress systems or if you want to use the card + * for offscreen rendering or compute if there are no crtcs enabled. Set it to + * true for now so that performance scales even if the displays are off. + */ + si_notify_smc_display_change(rdev, true /*rdev->pm.dpm.new_active_crtc_count > 0*/); } static void si_enable_spread_spectrum(struct radeon_device *rdev, bool enable) -- GitLab