| Message ID | 1669852310-22360-3-git-send-email-quic_khsieh@quicinc.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add data-lanes and link-frequencies to dp_out endpoint | expand |
On 01/12/2022 01:51, Kuogee Hsieh wrote: > Add capability to parser data-lanes as property of dp_out endpoint. > Also retain the original capability to parser data-lanes as property > of mdss_dp node to handle legacy case. > > Changes in v6: > -- first patch after split parser patch into two > > Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> > --- > drivers/gpu/drm/msm/dp/dp_parser.c | 30 +++++++++++++++++++++++------- > 1 file changed, 23 insertions(+), 7 deletions(-) > > diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c > index dd73221..b06ff60 100644 > --- a/drivers/gpu/drm/msm/dp/dp_parser.c > +++ b/drivers/gpu/drm/msm/dp/dp_parser.c > @@ -94,16 +94,32 @@ static int dp_parser_ctrl_res(struct dp_parser *parser) > static int dp_parser_misc(struct dp_parser *parser) > { > struct device_node *of_node = parser->pdev->dev.of_node; > - int len; > + struct device_node *endpoint; > + int cnt; > + > + /* > + * legacy code, data-lanes is the property of mdss_dp node > + */ > + cnt = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES); > + if (cnt > 0) { > + parser->max_dp_lanes = cnt; > + return 0; > + } > > - len = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES); > - if (len < 0) { > - DRM_WARN("Invalid property \"data-lanes\", default max DP lanes = %d\n", > - DP_MAX_NUM_DP_LANES); > - len = DP_MAX_NUM_DP_LANES; > + /* > + * data-lanes is the property of dp_out endpoint > + */ > + endpoint = of_graph_get_endpoint_by_regs(of_node, 1, 0); /* port@1 */ > + if (endpoint) { > + cnt = of_property_count_u32_elems(endpoint, "data-lanes"); drm_of_get_data_lanes_count(), or better drm_of_get_data_lanes_count_ep(). Also please check new property first, then check the legacy one. So it would be: cnt = drm_of_get_data_lanes_count_ep(); if (cnt < 0) cnt = drm_of_get_data_lanes_count(); if (cnt < 0) { DRM_WARN(...); cnt = DP_MAX_NUM_DP_LANES; } > + if (cnt < 0) > + parser->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */ > + else > + parser->max_dp_lanes = cnt; > + } else { > + parser->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */ > } > > - parser->max_dp_lanes = len; > return 0; > } >
diff --git a/drivers/gpu/drm/msm/dp/dp_parser.c b/drivers/gpu/drm/msm/dp/dp_parser.c index dd73221..b06ff60 100644 --- a/drivers/gpu/drm/msm/dp/dp_parser.c +++ b/drivers/gpu/drm/msm/dp/dp_parser.c @@ -94,16 +94,32 @@ static int dp_parser_ctrl_res(struct dp_parser *parser) static int dp_parser_misc(struct dp_parser *parser) { struct device_node *of_node = parser->pdev->dev.of_node; - int len; + struct device_node *endpoint; + int cnt; + + /* + * legacy code, data-lanes is the property of mdss_dp node + */ + cnt = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES); + if (cnt > 0) { + parser->max_dp_lanes = cnt; + return 0; + } - len = drm_of_get_data_lanes_count(of_node, 1, DP_MAX_NUM_DP_LANES); - if (len < 0) { - DRM_WARN("Invalid property \"data-lanes\", default max DP lanes = %d\n", - DP_MAX_NUM_DP_LANES); - len = DP_MAX_NUM_DP_LANES; + /* + * data-lanes is the property of dp_out endpoint + */ + endpoint = of_graph_get_endpoint_by_regs(of_node, 1, 0); /* port@1 */ + if (endpoint) { + cnt = of_property_count_u32_elems(endpoint, "data-lanes"); + if (cnt < 0) + parser->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */ + else + parser->max_dp_lanes = cnt; + } else { + parser->max_dp_lanes = DP_MAX_NUM_DP_LANES; /* 4 lanes */ } - parser->max_dp_lanes = len; return 0; }
Add capability to parser data-lanes as property of dp_out endpoint. Also retain the original capability to parser data-lanes as property of mdss_dp node to handle legacy case. Changes in v6: -- first patch after split parser patch into two Signed-off-by: Kuogee Hsieh <quic_khsieh@quicinc.com> --- drivers/gpu/drm/msm/dp/dp_parser.c | 30 +++++++++++++++++++++++------- 1 file changed, 23 insertions(+), 7 deletions(-)