On Wed, Nov 20, 2024 at 02:18:44PM +0800, keith zhao wrote:
> This commit adds a base API for configuring VS modes,
> which will streamline the setup and management of display modes
> in the VS DRM subsystem.
>
> In this implementation, we are using drm_atomic_helper_commit_tail_rpm()
> instead of drm_atomic_helper_commit_tail() to ensure that
> we skip planes related to inactive CRTCs.
>
> This helps to optimize the commit process and reduces unnecessary overhead
> when dealing with inactive display resources.
* This is an alternative implementation for the
* &drm_mode_config_helper_funcs.atomic_commit_tail hook, for drivers
* that support runtime_pm or need the CRTC to be enabled to perform a
* commit. Otherwise, one should use the default implementation
* drm_atomic_helper_commit_tail().
Neither of the cases seem to apply here. Please use
drm_atomic_helper_commit_tail().
> Signed-off-by: keith zhao <keith.zhao@xxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/verisilicon/Makefile | 3 ++-
> drivers/gpu/drm/verisilicon/vs_modeset.c | 31 ++++++++++++++++++++++++
> drivers/gpu/drm/verisilicon/vs_modeset.h | 10 ++++++++
> 3 files changed, 43 insertions(+), 1 deletion(-)
> create mode 100644 drivers/gpu/drm/verisilicon/vs_modeset.c
> create mode 100644 drivers/gpu/drm/verisilicon/vs_modeset.h
>
> diff --git a/drivers/gpu/drm/verisilicon/Makefile b/drivers/gpu/drm/verisilicon/Makefile
> index 7da54b259940..842867dad4cb 100644
> --- a/drivers/gpu/drm/verisilicon/Makefile
> +++ b/drivers/gpu/drm/verisilicon/Makefile
> @@ -1,5 +1,6 @@
> # SPDX-License-Identifier: GPL-2.0
>
> -vs_drm-objs := vs_dc_hw.o
> +vs_drm-objs := vs_dc_hw.o \
> + vs_modeset.o
>
> obj-$(CONFIG_DRM_VERISILICON_DC8200) += vs_drm.o
> diff --git a/drivers/gpu/drm/verisilicon/vs_modeset.c b/drivers/gpu/drm/verisilicon/vs_modeset.c
> new file mode 100644
> index 000000000000..0873a3465143
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/vs_modeset.c
> @@ -0,0 +1,31 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) VeriSilicon Holdings Co., Ltd.
> + */
> +#include <drm/drm_atomic_helper.h>
> +#include <drm/drm_fb_helper.h>
> +#include <drm/drm_gem_framebuffer_helper.h>
> +
> +#include "vs_modeset.h"
> +
> +static const struct drm_mode_config_funcs vs_mode_config_funcs = {
> + .fb_create = drm_gem_fb_create,
> + .atomic_check = drm_atomic_helper_check,
> + .atomic_commit = drm_atomic_helper_commit,
> +};
> +
> +static struct drm_mode_config_helper_funcs vs_mode_config_helpers = {
> + .atomic_commit_tail = drm_atomic_helper_commit_tail_rpm,
> +};
> +
> +void vs_mode_config_init(struct drm_device *dev)
> +{
> + int ret;
> +
> + ret = drmm_mode_config_init(dev);
> + if (ret)
> + return;
> +
> + dev->mode_config.funcs = &vs_mode_config_funcs;
> + dev->mode_config.helper_private = &vs_mode_config_helpers;
> +}
> diff --git a/drivers/gpu/drm/verisilicon/vs_modeset.h b/drivers/gpu/drm/verisilicon/vs_modeset.h
> new file mode 100644
> index 000000000000..bd04f81d2ad2
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/vs_modeset.h
> @@ -0,0 +1,10 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2020 VeriSilicon Holdings Co., Ltd.
> + */
> +
> +#ifndef __VS_MODESET_H__
> +#define __VS_MODESET_H__
> +
> +void vs_mode_config_init(struct drm_device *dev);
> +#endif /* __VS_FB_H__ */
There is no point in having single-function headers, please find
something more global.
> --
> 2.34.1
>
--
With best wishes
Dmitry
