Re: [PATCH RESEND RFC v4 3/6] drm/display: dp: use new DCPD access helpers

From: Kees Bakker
Date: Wed Apr 09 2025 - 14:28:12 EST


Op 24-03-2025 om 12:51 schreef Dmitry Baryshkov:
From: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>

Switch drm_dp_helper.c to use new set of DPCD read / write helpers.

Reviewed-by: Lyude Paul <lyude@xxxxxxxxxx>
Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
drivers/gpu/drm/display/drm_dp_helper.c | 296 +++++++++++++-------------------
1 file changed, 116 insertions(+), 180 deletions(-)

diff --git a/drivers/gpu/drm/display/drm_dp_helper.c b/drivers/gpu/drm/display/drm_dp_helper.c
index 410be0be233ad94702af423262a7d98e21afbfeb..e2439c8a7fefe116b04aaa689b557e2387b05540 100644
--- a/drivers/gpu/drm/display/drm_dp_helper.c
+++ b/drivers/gpu/drm/display/drm_dp_helper.c
[...]
@@ -3542,7 +3509,7 @@ int drm_dp_pcon_frl_configure_2(struct drm_dp_aux *aux, int max_frl_mask,
else
buf &= ~DP_PCON_FRL_LINK_TRAIN_EXTENDED;
- ret = drm_dp_dpcd_writeb(aux, DP_PCON_HDMI_LINK_CONFIG_2, buf);
+ return drm_dp_dpcd_write_byte(aux, DP_PCON_HDMI_LINK_CONFIG_2, buf);
if (ret < 0)
return ret;
Don't forget to delete the remainder of the function.
Also the variable `ret` isn't used anymore.
--
Kees