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author | Stephen Boyd <swboyd@chromium.org> | 2023-08-29 21:47:31 +0300 |
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committer | Dmitry Baryshkov <dmitry.baryshkov@linaro.org> | 2023-10-09 12:17:46 +0300 |
commit | c0977e0dd8a4f5f5ecd46e12b1022cd08568eefd (patch) | |
tree | 9227a13397e1004b1b3026be59b6a91fcce719e4 /drivers/gpu/drm/msm/dp | |
parent | 634e9da255fca11afd1894a8b6b352d81ebe7ae4 (diff) | |
download | linux-c0977e0dd8a4f5f5ecd46e12b1022cd08568eefd.tar.xz |
drm/msm/dp: Inline dp_link_parse_sink_count()
The function dp_link_parse_sink_count() is really just
drm_dp_read_sink_count(). It debug prints out the bit for content
protection (DP_SINK_CP_READY), but that is not useful beyond debug
because 'link->dp_link.sink_count' is overwritten to only contain the
sink_count in this same function. Just use drm_dp_read_sink_count() in
the one place this function is called to simplify.
Cc: Vinod Polimera <quic_vpolimer@quicinc.com>
Cc: Kuogee Hsieh <quic_khsieh@quicinc.com>
Signed-off-by: Stephen Boyd <swboyd@chromium.org>
Tested-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Kuogee Hsieh <quic_khsieh@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/554987/
Link: https://lore.kernel.org/r/20230829184735.2841739-7-swboyd@chromium.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm/dp')
-rw-r--r-- | drivers/gpu/drm/msm/dp/dp_link.c | 38 |
1 files changed, 3 insertions, 35 deletions
diff --git a/drivers/gpu/drm/msm/dp/dp_link.c b/drivers/gpu/drm/msm/dp/dp_link.c index 6375daaeb98e..98427d45e9a7 100644 --- a/drivers/gpu/drm/msm/dp/dp_link.c +++ b/drivers/gpu/drm/msm/dp/dp_link.c @@ -712,49 +712,17 @@ end: return ret; } -/** - * dp_link_parse_sink_count() - parses the sink count - * @dp_link: pointer to link module data - * - * Parses the DPCD to check if there is an update to the sink count - * (Byte 0x200), and whether all the sink devices connected have Content - * Protection enabled. - */ -static int dp_link_parse_sink_count(struct dp_link *dp_link) -{ - ssize_t rlen; - bool cp_ready; - - struct dp_link_private *link = container_of(dp_link, - struct dp_link_private, dp_link); - - rlen = drm_dp_dpcd_readb(link->aux, DP_SINK_COUNT, - &link->dp_link.sink_count); - if (rlen < 0) { - DRM_ERROR("sink count read failed. rlen=%zd\n", rlen); - return rlen; - } - - cp_ready = link->dp_link.sink_count & DP_SINK_CP_READY; - - link->dp_link.sink_count = - DP_GET_SINK_COUNT(link->dp_link.sink_count); - - drm_dbg_dp(link->drm_dev, "sink_count = 0x%x, cp_ready = 0x%x\n", - link->dp_link.sink_count, cp_ready); - return 0; -} - static int dp_link_parse_sink_status_field(struct dp_link_private *link) { - int len = 0; + int len; link->prev_sink_count = link->dp_link.sink_count; - len = dp_link_parse_sink_count(&link->dp_link); + len = drm_dp_read_sink_count(link->aux); if (len < 0) { DRM_ERROR("DP parse sink count failed\n"); return len; } + link->dp_link.sink_count = len; len = drm_dp_dpcd_read_link_status(link->aux, link->link_status); |