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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>
50 lines
1.6 KiB
Diff
50 lines
1.6 KiB
Diff
From d0a44f399526a061e74b9a34b554f3d0e9cdddb3 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 15:59:31 +0200
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Subject: [PATCH] drm/vc4: hdmi: Warn if we access the controller while
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disabled
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We've had many silent hangs where the kernel would look like it just
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stalled due to the access to one of the HDMI registers while the
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controller was disabled.
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Add a warning if we're about to do that so that it's at least not silent
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anymore.
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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/20210819135931.895976-7-maxime@cerno.tech
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---
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drivers/gpu/drm/vc4/vc4_hdmi_regs.h | 6 ++++++
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1 file changed, 6 insertions(+)
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--- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
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@@ -1,6 +1,8 @@
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#ifndef _VC4_HDMI_REGS_H_
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#define _VC4_HDMI_REGS_H_
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+#include <linux/pm_runtime.h>
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+
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#include "vc4_hdmi.h"
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#define VC4_HDMI_PACKET_STRIDE 0x24
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@@ -415,6 +417,8 @@ static inline u32 vc4_hdmi_read(struct v
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const struct vc4_hdmi_variant *variant = hdmi->variant;
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void __iomem *base;
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+ WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
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+
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if (reg >= variant->num_registers) {
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dev_warn(&hdmi->pdev->dev,
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"Invalid register ID %u\n", reg);
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@@ -441,6 +445,8 @@ static inline void vc4_hdmi_write(struct
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const struct vc4_hdmi_variant *variant = hdmi->variant;
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void __iomem *base;
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+ WARN_ON(!pm_runtime_active(&hdmi->pdev->dev));
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+
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if (reg >= variant->num_registers) {
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dev_warn(&hdmi->pdev->dev,
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"Invalid register ID %u\n", reg);
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