From: Brian Masney <masneyb@onstation.org> To: robdclark@gmail.com, sean@poorly.run Cc: bjorn.andersson@linaro.org, a.hajda@samsung.com, Laurent.pinchart@ideasonboard.com, airlied@linux.ie, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, jonathan@marek.ca Subject: [PATCH RFC v2 0/5] drm/msm: external HDMI support for Nexus 5 phone Date: Sun, 6 Oct 2019 21:45:04 -0400 [thread overview] Message-ID: <20191007014509.25180-1-masneyb@onstation.org> (raw) I am using an Analogix SP6001 SlimPort Micro-USB to 4K HDMI Adapter to connect my Nexus 5 phone to an external display. The external display is not fully working yet however I think I'm close. When I plug the cable into the phone, the interrupt for the hot plug detect GPIO for the HDMI bridge (Analogix ANX7808) fires and anx78xx_handle_common_int_4() shows that the interrupt status bit is set to SP_HPD_ESYNC_ERR. The second hot plug detect pin (for qcom,hdmi-tx-8974 for the MSM KMS/DRM driver) does not fire, and the clocks are not configured via msm_hdmi_phy_pll_init(). I suspect that this is the issue that I need to solve next. I verified in the downstream MSM sources that IRQ 8 on the mdss is the correct IRQ number for hdmi-tx. Here's the relevant line from /proc/interrupts showing that no interrupts are triggered: 93: 0 0 0 0 mdss 8 Edge hdmi_isr. I'm going to continue digging through the code but I'd appreciate any suggestions for things to check. I assume that the IRQs for both hot plug detect pins should fire when I plug the cable in. Unfortunately, the display doesn't work for me with the downstream kernel and I only have access to a running downstream kernel over the serial console. High-level changes since v1: - Hot plug detect interrupt now working properly on HDMI bridge - Introduce msm8974 PLL support I've held back some cosmetic changes to the drivers and only included the necessary changes required to get this functional. This requires the following patch I sent out on 2019-09-22 to analogix-anx78xx that corrects an i2c address: https://lore.kernel.org/lkml/20190922175940.5311-1-masneyb@onstation.org/ Brian Masney (5): drm/bridge: analogix-anx78xx: add support for avdd33 regulator drm/msm/hdmi: add msm8974 PLL support ARM: dts: qcom: pm8941: add 5vs2 regulator node ARM: dts: qcom: msm8974: add HDMI nodes ARM: dts: qcom: msm8974-hammerhead: add support for external display .../qcom-msm8974-lge-nexus5-hammerhead.dts | 142 ++++ arch/arm/boot/dts/qcom-msm8974.dtsi | 78 ++ arch/arm/boot/dts/qcom-pm8941.dtsi | 10 + drivers/gpu/drm/bridge/analogix-anx78xx.c | 33 + drivers/gpu/drm/msm/Makefile | 1 + drivers/gpu/drm/msm/hdmi/hdmi.h | 6 + drivers/gpu/drm/msm/hdmi/hdmi_phy.c | 4 +- drivers/gpu/drm/msm/hdmi/hdmi_pll_8974.c | 684 ++++++++++++++++++ 8 files changed, 957 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/msm/hdmi/hdmi_pll_8974.c -- 2.21.0
WARNING: multiple messages have this Message-ID (diff)
From: Brian Masney <masneyb-1iNe0GrtECGEi8DpZVb4nw@public.gmane.org> To: robdclark-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, sean-p7yTbzM4H96eqtR555YLDQ@public.gmane.org Cc: jonathan-eSc4qw6YbEQ@public.gmane.org, airlied-cv59FeDIM0c@public.gmane.org, linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, bjorn.andersson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, Laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org, daniel-/w4YWyX8dFk@public.gmane.org, freedreno-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Subject: [PATCH RFC v2 0/5] drm/msm: external HDMI support for Nexus 5 phone Date: Sun, 6 Oct 2019 21:45:04 -0400 [thread overview] Message-ID: <20191007014509.25180-1-masneyb@onstation.org> (raw) I am using an Analogix SP6001 SlimPort Micro-USB to 4K HDMI Adapter to connect my Nexus 5 phone to an external display. The external display is not fully working yet however I think I'm close. When I plug the cable into the phone, the interrupt for the hot plug detect GPIO for the HDMI bridge (Analogix ANX7808) fires and anx78xx_handle_common_int_4() shows that the interrupt status bit is set to SP_HPD_ESYNC_ERR. The second hot plug detect pin (for qcom,hdmi-tx-8974 for the MSM KMS/DRM driver) does not fire, and the clocks are not configured via msm_hdmi_phy_pll_init(). I suspect that this is the issue that I need to solve next. I verified in the downstream MSM sources that IRQ 8 on the mdss is the correct IRQ number for hdmi-tx. Here's the relevant line from /proc/interrupts showing that no interrupts are triggered: 93: 0 0 0 0 mdss 8 Edge hdmi_isr. I'm going to continue digging through the code but I'd appreciate any suggestions for things to check. I assume that the IRQs for both hot plug detect pins should fire when I plug the cable in. Unfortunately, the display doesn't work for me with the downstream kernel and I only have access to a running downstream kernel over the serial console. High-level changes since v1: - Hot plug detect interrupt now working properly on HDMI bridge - Introduce msm8974 PLL support I've held back some cosmetic changes to the drivers and only included the necessary changes required to get this functional. This requires the following patch I sent out on 2019-09-22 to analogix-anx78xx that corrects an i2c address: https://lore.kernel.org/lkml/20190922175940.5311-1-masneyb@onstation.org/ Brian Masney (5): drm/bridge: analogix-anx78xx: add support for avdd33 regulator drm/msm/hdmi: add msm8974 PLL support ARM: dts: qcom: pm8941: add 5vs2 regulator node ARM: dts: qcom: msm8974: add HDMI nodes ARM: dts: qcom: msm8974-hammerhead: add support for external display .../qcom-msm8974-lge-nexus5-hammerhead.dts | 142 ++++ arch/arm/boot/dts/qcom-msm8974.dtsi | 78 ++ arch/arm/boot/dts/qcom-pm8941.dtsi | 10 + drivers/gpu/drm/bridge/analogix-anx78xx.c | 33 + drivers/gpu/drm/msm/Makefile | 1 + drivers/gpu/drm/msm/hdmi/hdmi.h | 6 + drivers/gpu/drm/msm/hdmi/hdmi_phy.c | 4 +- drivers/gpu/drm/msm/hdmi/hdmi_pll_8974.c | 684 ++++++++++++++++++ 8 files changed, 957 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/msm/hdmi/hdmi_pll_8974.c -- 2.21.0 _______________________________________________ Freedreno mailing list Freedreno@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/freedreno
next reply other threads:[~2019-10-07 1:45 UTC|newest] Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-07 1:45 Brian Masney [this message] 2019-10-07 1:45 ` [PATCH RFC v2 0/5] drm/msm: external HDMI support for Nexus 5 phone Brian Masney 2019-10-07 1:45 ` [PATCH RFC v2 1/5] drm/bridge: analogix-anx78xx: add support for avdd33 regulator Brian Masney 2019-10-07 1:45 ` Brian Masney 2019-10-07 17:54 ` Laurent Pinchart 2019-10-07 17:54 ` Laurent Pinchart 2019-10-07 1:45 ` [PATCH RFC v2 2/5] drm/msm/hdmi: add msm8974 PLL support Brian Masney 2019-10-07 1:45 ` Brian Masney 2019-10-07 1:45 ` [PATCH RFC v2 3/5] ARM: dts: qcom: pm8941: add 5vs2 regulator node Brian Masney 2019-10-07 1:45 ` Brian Masney 2019-10-07 5:48 ` Bjorn Andersson 2019-10-07 1:45 ` [PATCH RFC v2 4/5] ARM: dts: qcom: msm8974: add HDMI nodes Brian Masney 2019-10-07 1:45 ` Brian Masney 2019-10-09 2:21 ` Stephen Boyd 2019-10-09 6:05 ` Brian Masney 2019-10-09 15:39 ` Stephen Boyd 2019-10-09 15:39 ` Stephen Boyd 2019-10-09 15:39 ` Stephen Boyd 2019-10-09 16:51 ` Brian Masney [not found] ` <20191009060520.GA14506-1iNe0GrtECGEi8DpZVb4nw@public.gmane.org> 2019-10-09 15:39 ` Stephen Boyd 2019-10-07 1:45 ` [PATCH RFC v2 5/5] ARM: dts: qcom: msm8974-hammerhead: add support for external display Brian Masney 2019-10-07 1:45 ` Brian Masney 2019-10-09 2:25 ` Stephen Boyd
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