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| author | Abhinav Kumar <abhinavk@codeaurora.org> | 2021-04-16 13:57:20 -0700 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2021-06-23 07:32:13 -0700 |
| commit | 98659487b845c05b6bed85d881713545db674c7c (patch) | |
| tree | 7f46773099ad01e8d3857c3f6a585fdffa62c029 /drivers/gpu/drm/msm/msm_drv.c | |
| parent | a4324a7a1c3d57ecfba0fee3e8b2d370eb5597c9 (diff) | |
| download | lwn-98659487b845c05b6bed85d881713545db674c7c.tar.gz lwn-98659487b845c05b6bed85d881713545db674c7c.zip | |
drm/msm: add support to take dpu snapshot
Add the msm_disp_snapshot module which adds supports to dump dpu
registers and capture the drm atomic state which can be used in
case of error conditions.
changes in v5:
- start storing disp_state in msm_kms instead of dpu_kms
- get rid of MSM_DISP_SNAPSHOT_IN_* enum by simplifying the functions
- move snprintf inside the snapshot core by using varargs
- get rid of some stale code comments
- allow snapshot module for non-DPU targets
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/1618606645-19695-3-git-send-email-abhinavk@codeaurora.org
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/msm_drv.c')
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index fe7d17cd35ec..74e5e5ac82d0 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -1,6 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-only /* - * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved. + * Copyright (c) 2016-2018, 2020-2021 The Linux Foundation. All rights reserved. * Copyright (C) 2013 Red Hat * Author: Rob Clark <robdclark@gmail.com> */ @@ -19,6 +19,7 @@ #include <drm/drm_of.h> #include <drm/drm_vblank.h> +#include "disp/msm_disp_snapshot.h" #include "msm_drv.h" #include "msm_debugfs.h" #include "msm_fence.h" @@ -167,6 +168,24 @@ void __iomem *msm_ioremap_quiet(struct platform_device *pdev, const char *name, return _msm_ioremap(pdev, name, dbgname, true); } +unsigned long msm_iomap_size(struct platform_device *pdev, const char *name) +{ + struct resource *res; + + if (name) + res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); + else + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + if (!res) { + dev_dbg(&pdev->dev, "failed to get memory resource: %s\n", + name); + return 0; + } + + return resource_size(res); +} + void msm_writel(u32 data, void __iomem *addr) { if (reglog) @@ -278,6 +297,8 @@ static int msm_drm_uninit(struct device *dev) msm_fbdev_free(ddev); #endif + msm_disp_snapshot_destroy(ddev); + drm_mode_config_cleanup(ddev); pm_runtime_get_sync(dev); @@ -550,6 +571,10 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) if (ret) goto err_msm_uninit; + ret = msm_disp_snapshot_init(ddev); + if (ret) + DRM_DEV_ERROR(dev, "msm_disp_snapshot_init failed ret = %d\n", ret); + drm_mode_config_reset(ddev); #ifdef CONFIG_DRM_FBDEV_EMULATION |