From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> To: Kuogee Hsieh <quic_khsieh@quicinc.com>, dri-devel@lists.freedesktop.org, robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org, dianders@chromium.org, vkoul@kernel.org, daniel@ffwll.ch, airlied@linux.ie, agross@kernel.org, bjorn.andersson@linaro.org Cc: quic_abhinavk@quicinc.com, quic_sbillaka@quicinc.com, freedreno@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 2/4] drm/msm/dp: parser data-lanes as property of dp_out endpoint Date: Thu, 1 Dec 2022 01:58:12 +0200 [thread overview] Message-ID: <50405292-d6c1-d9ee-20fe-46f4feee6d9c@linaro.org> (raw) In-Reply-To: <1669852310-22360-3-git-send-email-quic_khsieh@quicinc.com> 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; > } > -- With best wishes Dmitry
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> To: Kuogee Hsieh <quic_khsieh@quicinc.com>, dri-devel@lists.freedesktop.org, robdclark@gmail.com, sean@poorly.run, swboyd@chromium.org, dianders@chromium.org, vkoul@kernel.org, daniel@ffwll.ch, airlied@linux.ie, agross@kernel.org, bjorn.andersson@linaro.org Cc: linux-arm-msm@vger.kernel.org, quic_sbillaka@quicinc.com, freedreno@lists.freedesktop.org, quic_abhinavk@quicinc.com, linux-kernel@vger.kernel.org Subject: Re: [PATCH v6 2/4] drm/msm/dp: parser data-lanes as property of dp_out endpoint Date: Thu, 1 Dec 2022 01:58:12 +0200 [thread overview] Message-ID: <50405292-d6c1-d9ee-20fe-46f4feee6d9c@linaro.org> (raw) In-Reply-To: <1669852310-22360-3-git-send-email-quic_khsieh@quicinc.com> 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; > } > -- With best wishes Dmitry
next prev parent reply other threads:[~2022-11-30 23:58 UTC|newest] Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-11-30 23:51 [PATCH v6 0/4] Add data-lanes and link-frequencies to dp_out endpoint Kuogee Hsieh 2022-11-30 23:51 ` Kuogee Hsieh 2022-11-30 23:51 ` [PATCH v6 1/4] arm64: dts: qcom: add data-lanes and link-freuencies into " Kuogee Hsieh 2022-11-30 23:51 ` Kuogee Hsieh 2022-12-01 0:07 ` Dmitry Baryshkov 2022-12-01 0:07 ` Dmitry Baryshkov 2022-12-01 0:21 ` Dmitry Baryshkov 2022-12-01 0:21 ` Dmitry Baryshkov 2022-12-01 17:32 ` Kuogee Hsieh 2022-12-01 17:32 ` Kuogee Hsieh 2022-12-01 17:49 ` Dmitry Baryshkov 2022-12-01 17:49 ` Dmitry Baryshkov 2022-12-01 20:59 ` Kuogee Hsieh 2022-12-01 20:59 ` Kuogee Hsieh 2022-12-01 17:34 ` Kuogee Hsieh 2022-12-01 17:34 ` Kuogee Hsieh 2022-12-01 17:36 ` Dmitry Baryshkov 2022-12-01 17:36 ` Dmitry Baryshkov 2022-11-30 23:51 ` [PATCH v6 2/4] drm/msm/dp: parser data-lanes as property of " Kuogee Hsieh 2022-11-30 23:51 ` Kuogee Hsieh 2022-11-30 23:58 ` Dmitry Baryshkov [this message] 2022-11-30 23:58 ` Dmitry Baryshkov 2022-11-30 23:51 ` [PATCH v6 3/4] drm/msm/dp: parser link-frequencies " Kuogee Hsieh 2022-11-30 23:51 ` Kuogee Hsieh 2022-12-01 0:26 ` Dmitry Baryshkov 2022-12-01 0:26 ` Dmitry Baryshkov 2022-12-01 21:13 ` kernel test robot 2022-12-01 21:13 ` kernel test robot 2022-12-01 21:44 ` kernel test robot 2022-12-01 21:44 ` kernel test robot 2022-11-30 23:51 ` [PATCH v6 4/4] drm/msm/dp: add support of max dp link rate Kuogee Hsieh 2022-11-30 23:51 ` Kuogee Hsieh
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=50405292-d6c1-d9ee-20fe-46f4feee6d9c@linaro.org \ --to=dmitry.baryshkov@linaro.org \ --cc=agross@kernel.org \ --cc=airlied@linux.ie \ --cc=bjorn.andersson@linaro.org \ --cc=daniel@ffwll.ch \ --cc=dianders@chromium.org \ --cc=dri-devel@lists.freedesktop.org \ --cc=freedreno@lists.freedesktop.org \ --cc=linux-arm-msm@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=quic_abhinavk@quicinc.com \ --cc=quic_khsieh@quicinc.com \ --cc=quic_sbillaka@quicinc.com \ --cc=robdclark@gmail.com \ --cc=sean@poorly.run \ --cc=swboyd@chromium.org \ --cc=vkoul@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.