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ca5c695a45
Deleted following upstreamed patches: bcm27xx: 950-0006-drm-vc4-hdmi-Fix-HPD-GPIO-detection.patch bcm27xx: 950-0420-drm-vc4-Adopt-the-dma-configuration-from-the-HVS-or-.patch bcm27xx: 950-0425-drm-vc4-A-present-but-empty-dmas-disables-audio.patch bcm27xx: 950-0432-vc4-drm-Avoid-full-hdmi-audio-fifo-writes.patch bcm27xx: 950-0433-vc4-drm-vc4_plane-Remove-subpixel-positioning-check.patch bcm27xx: 950-0435-drm-vc4-Correct-pixel-order-for-DSI0.patch bcm27xx: 950-0436-drm-vc4-Register-dsi0-as-the-correct-vc4-encoder-typ.patch bcm27xx: 950-0437-drm-vc4-Fix-dsi0-interrupt-support.patch bcm27xx: 950-0438-drm-vc4-Add-correct-stop-condition-to-vc4_dsi_encode.patch bcm27xx: 950-0443-drm-vc4-Fix-timings-for-interlaced-modes.patch bcm27xx: 950-0445-drm-vc4-Fix-margin-calculations-for-the-right-bottom.patch bcm27xx: 950-0475-drm-vc4-Reset-HDMI-MISC_CONTROL-register.patch bcm27xx: 950-0476-drm-vc4-Release-workaround-buffer-and-DMA-in-error-p.patch bcm27xx: 950-0477-drm-vc4-Correct-DSI-divider-calculations.patch bcm27xx: 950-0664-drm-vc4-dsi-Correct-max-divider-to-255-not-7.patch bcm53xx: 072-next-ARM_dts_BCM53015-add-mr26.patch mediatek: 920-linux-next-dts-mt7622-bpi-r64-fix-wps-button.patch Manually rebased following patches: bcm27xx: 950-0004-drm-vc4-hdmi-Remove-the-DDC-probing-for-status-detec.patch bcm27xx: 950-0700-net-phy-lan87xx-Decrease-phy-polling-rate.patch bcm27xx: 950-0711-drm-vc4-Rename-bridge-to-out_bridge.patch bcm27xx: 950-0713-drm-vc4-Remove-splitting-the-bridge-chain-from-the-d.patch bcm27xx: 950-0715-drm-vc4-Convert-vc4_dsi-to-using-a-bridge-instead-of.patch bcm27xx: 950-0787-vc4-drm-vc4_plane-Keep-fractional-source-coords-insi.patch bcm27xx: 950-0914-mmc-block-Don-t-do-single-sector-reads-during-recove.patch Runtime tested on turris-omnia and glinet-b1300. Tested-by: John Audia <therealgraysky@proton.me> [bcm2711/RPi4B, mt7622/RT3200] Signed-off-by: Petr Štetiar <ynezz@true.cz>
52 lines
1.8 KiB
Diff
52 lines
1.8 KiB
Diff
From 0ba6ff7f5632f01143911e307be538ecc62e5094 Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Thu, 19 Aug 2021 15:59:30 +0200
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Subject: [PATCH] drm/vc4: hdmi: Make sure the device is powered with
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CEC
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Similarly to what we encountered with the detect hook with DRM, nothing
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actually prevents any of the CEC callback from being run while the HDMI
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output is disabled.
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However, this is an issue since any register access to the controller
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when it's powered down will result in a silent hang.
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Let's make sure we run the runtime_pm hooks when the CEC adapter is
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opened and closed by the userspace to avoid that issue.
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Fixes: 15b4511a4af6 ("drm/vc4: add HDMI CEC support")
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Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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Link: https://patchwork.freedesktop.org/patch/msgid/20210819135931.895976-6-maxime@cerno.tech
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -1753,8 +1753,14 @@ static int vc4_hdmi_cec_enable(struct ce
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struct vc4_hdmi *vc4_hdmi = cec_get_drvdata(adap);
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/* clock period in microseconds */
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const u32 usecs = 1000000 / CEC_CLOCK_FREQ;
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- u32 val = HDMI_READ(HDMI_CEC_CNTRL_5);
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+ u32 val;
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+ int ret;
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+ ret = pm_runtime_resume_and_get(&vc4_hdmi->pdev->dev);
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+ if (ret)
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+ return ret;
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+
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+ val = HDMI_READ(HDMI_CEC_CNTRL_5);
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val &= ~(VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET |
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VC4_HDMI_CEC_CNT_TO_4700_US_MASK |
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VC4_HDMI_CEC_CNT_TO_4500_US_MASK);
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@@ -1797,6 +1803,8 @@ static int vc4_hdmi_cec_disable(struct c
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HDMI_WRITE(HDMI_CEC_CNTRL_5, HDMI_READ(HDMI_CEC_CNTRL_5) |
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VC4_HDMI_CEC_TX_SW_RESET | VC4_HDMI_CEC_RX_SW_RESET);
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+ pm_runtime_put(&vc4_hdmi->pdev->dev);
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+
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return 0;
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}
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