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Date: Sun, 14 Jun 2020 08:35:11 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc: linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v4 1/3] venus: Add debugfs interface to set firmware log
level
On Sun, Jun 14, 2020 at 01:39:17AM +0300, Stanimir Varbanov wrote:
> This will be useful when debugging specific issues related to
> firmware HFI interface.
>
> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@...aro.org>
You didn't cc: any of us on the patchs, like you did on 0/3 :(
> ---
> drivers/media/platform/qcom/venus/Makefile | 2 +-
> drivers/media/platform/qcom/venus/core.c | 3 +++
> drivers/media/platform/qcom/venus/core.h | 3 +++
> drivers/media/platform/qcom/venus/dbgfs.c | 21 +++++++++++++++++++
> drivers/media/platform/qcom/venus/dbgfs.h | 12 +++++++++++
> drivers/media/platform/qcom/venus/hfi_venus.c | 7 ++++++-
> 6 files changed, 46 insertions(+), 2 deletions(-)
> create mode 100644 drivers/media/platform/qcom/venus/dbgfs.c
> create mode 100644 drivers/media/platform/qcom/venus/dbgfs.h
>
> diff --git a/drivers/media/platform/qcom/venus/Makefile b/drivers/media/platform/qcom/venus/Makefile
> index 64af0bc1edae..dfc636865709 100644
> --- a/drivers/media/platform/qcom/venus/Makefile
> +++ b/drivers/media/platform/qcom/venus/Makefile
> @@ -3,7 +3,7 @@
>
> venus-core-objs += core.o helpers.o firmware.o \
> hfi_venus.o hfi_msgs.o hfi_cmds.o hfi.o \
> - hfi_parser.o pm_helpers.o
> + hfi_parser.o pm_helpers.o dbgfs.o
>
> venus-dec-objs += vdec.o vdec_ctrls.o
> venus-enc-objs += venc.o venc_ctrls.o
> diff --git a/drivers/media/platform/qcom/venus/core.c b/drivers/media/platform/qcom/venus/core.c
> index 203c6538044f..249141e27fea 100644
> --- a/drivers/media/platform/qcom/venus/core.c
> +++ b/drivers/media/platform/qcom/venus/core.c
> @@ -290,6 +290,8 @@ static int venus_probe(struct platform_device *pdev)
> if (ret)
> goto err_dev_unregister;
>
> + venus_dbgfs_init(core);
> +
> return 0;
>
> err_dev_unregister:
> @@ -337,6 +339,7 @@ static int venus_remove(struct platform_device *pdev)
> v4l2_device_unregister(&core->v4l2_dev);
> mutex_destroy(&core->pm_lock);
> mutex_destroy(&core->lock);
> + venus_dbgfs_deinit(core);
>
> return ret;
> }
> diff --git a/drivers/media/platform/qcom/venus/core.h b/drivers/media/platform/qcom/venus/core.h
> index 7118612673c9..b48782f9aa95 100644
> --- a/drivers/media/platform/qcom/venus/core.h
> +++ b/drivers/media/platform/qcom/venus/core.h
> @@ -12,6 +12,7 @@
> #include <media/v4l2-ctrls.h>
> #include <media/v4l2-device.h>
>
> +#include "dbgfs.h"
> #include "hfi.h"
>
> #define VIDC_CLKS_NUM_MAX 4
> @@ -136,6 +137,7 @@ struct venus_caps {
> * @priv: a private filed for HFI operations
> * @ops: the core HFI operations
> * @work: a delayed work for handling system fatal error
> + * @root: debugfs root directory
> */
> struct venus_core {
> void __iomem *base;
> @@ -185,6 +187,7 @@ struct venus_core {
> unsigned int codecs_count;
> unsigned int core0_usage_count;
> unsigned int core1_usage_count;
> + struct dentry *root;
> };
>
> struct vdec_controls {
> diff --git a/drivers/media/platform/qcom/venus/dbgfs.c b/drivers/media/platform/qcom/venus/dbgfs.c
> new file mode 100644
> index 000000000000..782d54ac1b8f
> --- /dev/null
> +++ b/drivers/media/platform/qcom/venus/dbgfs.c
> @@ -0,0 +1,21 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (C) 2020 Linaro Ltd.
> + */
> +
> +#include <linux/debugfs.h>
> +
> +#include "core.h"
> +
> +extern int venus_fw_debug;
> +
> +void venus_dbgfs_init(struct venus_core *core)
> +{
> + core->root = debugfs_create_dir("venus", NULL);
> + debugfs_create_x32("fw_level", 0644, core->root, &venus_fw_debug);
> +}
> +
> +void venus_dbgfs_deinit(struct venus_core *core)
> +{
> + debugfs_remove_recursive(core->root);
> +}
> diff --git a/drivers/media/platform/qcom/venus/dbgfs.h b/drivers/media/platform/qcom/venus/dbgfs.h
> new file mode 100644
> index 000000000000..b7b621a8472f
> --- /dev/null
> +++ b/drivers/media/platform/qcom/venus/dbgfs.h
> @@ -0,0 +1,12 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* Copyright (C) 2020 Linaro Ltd. */
> +
> +#ifndef __VENUS_DBGFS_H__
> +#define __VENUS_DBGFS_H__
> +
> +struct venus_core;
> +
> +void venus_dbgfs_init(struct venus_core *core);
> +void venus_dbgfs_deinit(struct venus_core *core);
> +
> +#endif
> diff --git a/drivers/media/platform/qcom/venus/hfi_venus.c b/drivers/media/platform/qcom/venus/hfi_venus.c
> index 0d8855014ab3..3a04b08ab85a 100644
> --- a/drivers/media/platform/qcom/venus/hfi_venus.c
> +++ b/drivers/media/platform/qcom/venus/hfi_venus.c
> @@ -130,7 +130,7 @@ struct venus_hfi_device {
> };
>
> static bool venus_pkt_debug;
> -static int venus_fw_debug = HFI_DEBUG_MSG_ERROR | HFI_DEBUG_MSG_FATAL;
> +int venus_fw_debug = HFI_DEBUG_MSG_ERROR | HFI_DEBUG_MSG_FATAL;
> static bool venus_sys_idle_indicator;
> static bool venus_fw_low_power_mode = true;
> static int venus_hw_rsp_timeout = 1000;
> @@ -1130,9 +1130,14 @@ static int venus_session_init(struct venus_inst *inst, u32 session_type,
> u32 codec)
> {
> struct venus_hfi_device *hdev = to_hfi_priv(inst->core);
> + struct device *dev = hdev->core->dev;
> struct hfi_session_init_pkt pkt;
> int ret;
>
> + ret = venus_sys_set_debug(hdev, venus_fw_debug);
> + if (ret)
> + dev_warn(dev, "setting fw debug msg ON failed (%d)\n", ret);
Why do you care about this to tell the user about it?
thanks,
greg k-h
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