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Date: Wed, 22 May 2024 00:06:07 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: keith <keith.zhao@...rfivetech.com>
Cc: andrzej.hajda@...el.com, neil.armstrong@...aro.org, rfoss@...nel.org,
Laurent.pinchart@...asonboard.com, jonas@...boo.se, jernej.skrabec@...il.com,
maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de, airlied@...il.com,
daniel@...ll.ch, robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
hjc@...k-chips.com, heiko@...ech.de, andy.yan@...k-chips.com,
xingyu.wu@...rfivetech.com, p.zabel@...gutronix.de, jack.zhu@...rfivetech.com,
shengyang.chen@...rfivetech.com, dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 06/10] drm/vs: add vs plane api
On Tue, May 21, 2024 at 06:58:13PM +0800, keith wrote:
> add plane funs and helper funs
> add vs drm common struct and funs
>
> Signed-off-by: keith <keith.zhao@...rfivetech.com>
> ---
> drivers/gpu/drm/verisilicon/Makefile | 3 +-
> drivers/gpu/drm/verisilicon/vs_drv.h | 93 +++++
> drivers/gpu/drm/verisilicon/vs_plane.c | 487 +++++++++++++++++++++++++
> drivers/gpu/drm/verisilicon/vs_plane.h | 26 ++
> 4 files changed, 608 insertions(+), 1 deletion(-)
> create mode 100644 drivers/gpu/drm/verisilicon/vs_drv.h
> create mode 100644 drivers/gpu/drm/verisilicon/vs_plane.c
> create mode 100644 drivers/gpu/drm/verisilicon/vs_plane.h
>
> diff --git a/drivers/gpu/drm/verisilicon/Makefile b/drivers/gpu/drm/verisilicon/Makefile
> index 536091f37378..1c593b943261 100644
> --- a/drivers/gpu/drm/verisilicon/Makefile
> +++ b/drivers/gpu/drm/verisilicon/Makefile
> @@ -1,6 +1,7 @@
> # SPDX-License-Identifier: GPL-2.0
>
> vs_drm-objs := vs_dc_hw.o \
> - vs_modeset.o
> + vs_modeset.o \
> + vs_plane.o
>
> obj-$(CONFIG_DRM_VERISILICON_DC8200) += vs_drm.o
> diff --git a/drivers/gpu/drm/verisilicon/vs_drv.h b/drivers/gpu/drm/verisilicon/vs_drv.h
> new file mode 100644
> index 000000000000..d9f6efa7c8f9
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/vs_drv.h
> @@ -0,0 +1,93 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.
> + */
> +
> +#ifndef __VS_DRV_H__
> +#define __VS_DRV_H__
> +
> +#include <linux/module.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +#include <linux/reset.h>
> +
> +#include <drm/drm_drv.h>
> +#include <drm/drm_fourcc.h>
> +#include <drm/drm_gem.h>
> +#include <drm/drm_managed.h>
> +
> +#include "vs_dc_hw.h"
> +
> +/*@...ch_alignment: buffer pitch alignment required by sub-devices.*/
Is that all the docs you want to add?
> +struct vs_drm_device {
> + struct drm_device base;
> + unsigned int pitch_alignment;
> + /* clocks */
> + unsigned int clk_count;
> + struct clk_bulk_data *clks;
> + struct reset_control *rsts;
> + struct vs_dc dc;
> + int irq;
As usual, please drop unused fields and add them when required.
> +};
> +
> +static inline struct vs_drm_device *
> +to_vs_drm_private(const struct drm_device *dev)
> +{
> + return container_of(dev, struct vs_drm_device, base);
> +}
> +
> +struct vs_crtc_state {
> + struct drm_crtc_state base;
> +
> + u32 output_fmt;
> + u8 encoder_type;
> + u8 bpp;
> +};
Not used here, drop.
> +
> +struct vs_crtc {
> + struct drm_crtc base;
> + struct device *dev;
> +};
> +
> +static inline u8 to_vs_display_id(struct vs_dc *dc, struct drm_crtc *crtc)
> +{
> + u8 panel_num = dc->hw.info->panel_num;
> + u32 index = drm_crtc_index(crtc);
> + int i;
> +
> + for (i = 0; i < panel_num; i++) {
> + if (index == dc->crtc[i]->base.index)
> + return i;
> + }
> +
> + return 0;
> +}
> +
> +static inline struct vs_crtc_state *
> +to_vs_crtc_state(struct drm_crtc_state *state)
> +{
> + return container_of(state, struct vs_crtc_state, base);
> +}
> +
> +struct vs_plane_state {
> + struct drm_plane_state base;
> + dma_addr_t dma_addr[DRM_FORMAT_MAX_PLANES];
> +};
> +
> +struct vs_plane {
> + struct drm_plane base;
> + u8 id;
> +};
> +
> +static inline struct vs_plane *to_vs_plane(struct drm_plane *plane)
> +{
> + return container_of(plane, struct vs_plane, base);
> +}
> +
> +static inline struct vs_plane_state *
> +to_vs_plane_state(struct drm_plane_state *state)
> +{
> + return container_of(state, struct vs_plane_state, base);
> +}
> +
> +#endif /* __VS_DRV_H__ */
> diff --git a/drivers/gpu/drm/verisilicon/vs_plane.c b/drivers/gpu/drm/verisilicon/vs_plane.c
> new file mode 100644
> index 000000000000..653f0ce72ed6
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/vs_plane.c
> @@ -0,0 +1,487 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.
> + */
> +#include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_helper.h>
> +#include <drm/drm_blend.h>
> +#include <drm/drm_gem_dma_helper.h>
> +#include <drm/drm_fb_dma_helper.h>
> +#include <drm/drm_framebuffer.h>
> +#include <drm/drm_plane.h>
> +#include <drm/drm_plane_helper.h>
> +
> +#include "vs_plane.h"
> +
> +static void vs_plane_atomic_destroy_state(struct drm_plane *plane,
> + struct drm_plane_state *state)
> +{
> + struct vs_plane_state *vs_plane_state = to_vs_plane_state(state);
> +
> + __drm_atomic_helper_plane_destroy_state(state);
> + kfree(vs_plane_state);
> +}
> +
> +static void vs_plane_reset(struct drm_plane *plane)
> +{
> + struct vs_plane_state *state;
> + struct vs_plane *vs_plane = to_vs_plane(plane);
> +
> + if (plane->state)
> + vs_plane_atomic_destroy_state(plane, plane->state);
> +
> + state = kzalloc(sizeof(*state), GFP_KERNEL);
> + if (!state)
> + return;
> +
> + state->base.zpos = vs_plane->id;
> + __drm_atomic_helper_plane_reset(plane, &state->base);
> +}
> +
> +static struct drm_plane_state *
> +vs_plane_atomic_duplicate_state(struct drm_plane *plane)
> +{
> + struct vs_plane_state *state;
> +
> + if (WARN_ON(!plane->state))
> + return NULL;
> +
> + state = kzalloc(sizeof(*state), GFP_KERNEL);
> + if (!state)
> + return NULL;
> +
> + __drm_atomic_helper_plane_duplicate_state(plane, &state->base);
> +
> + return &state->base;
> +}
> +
> +static bool vs_format_mod_supported(struct drm_plane *plane,
> + u32 format,
> + u64 modifier)
> +{
> + int i;
> +
> + /* We always have to allow these modifiers:
> + * 1. Core DRM checks for LINEAR support if userspace does not provide modifiers.
> + * 2. Not passing any modifiers is the same as explicitly passing INVALID.
> + */
> + if (modifier == DRM_FORMAT_MOD_LINEAR)
> + return true;
> +
> + /* Check that the modifier is on the list of the plane's supported modifiers. */
> + for (i = 0; i < plane->modifier_count; i++) {
> + if (modifier == plane->modifiers[i])
> + break;
> + }
> +
> + if (i == plane->modifier_count)
> + return false;
> +
> + return true;
> +}
> +
> +const struct drm_plane_funcs vs_plane_funcs = {
> + .update_plane = drm_atomic_helper_update_plane,
> + .disable_plane = drm_atomic_helper_disable_plane,
> + .reset = vs_plane_reset,
> + .atomic_duplicate_state = vs_plane_atomic_duplicate_state,
> + .atomic_destroy_state = vs_plane_atomic_destroy_state,
> + .format_mod_supported = vs_format_mod_supported,
> +};
> +
> +static unsigned char vs_get_plane_number(struct drm_framebuffer *fb)
> +{
> + const struct drm_format_info *info;
> +
> + if (!fb)
> + return 0;
> +
> + info = drm_format_info(fb->format->format);
> + if (!info || info->num_planes > DRM_FORMAT_MAX_PLANES)
> + return 0;
> +
> + return info->num_planes;
> +}
> +
> +static bool vs_dc_mod_supported(const u64 *info_modifiers, u64 modifier)
> +{
> + const u64 *mods;
> +
> + if (!info_modifiers)
> + return false;
> +
> + for (mods = info_modifiers; *mods != DRM_FORMAT_MOD_INVALID; mods++) {
> + if (*mods == modifier)
> + return true;
> + }
> +
> + return false;
> +}
> +
> +static int vs_primary_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state)
> +{
> + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
> + struct vs_drm_device *priv = to_vs_drm_private(plane->dev);
> + struct vs_dc *dc = &priv->dc;
> + struct drm_framebuffer *fb = new_state->fb;
> + const struct vs_plane_primary_info *primary_info;
> + struct drm_crtc_state *crtc_state;
> + int i;
> +
> + if (!new_state->crtc || !new_state->fb)
> + return 0;
> + for (i = 0; i < dc->hw.info->primary_num; i++) {
> + primary_info = (struct vs_plane_primary_info *)&dc->hw.info->primary[i];
> + if (primary_info->id == to_vs_plane(plane)->id)
> + break;
> + }
> +
> + primary_info = &dc->hw.info->primary[i];
> +
> + if (fb->width < primary_info->min_width ||
> + fb->width > primary_info->max_width ||
> + fb->height < primary_info->min_height ||
> + fb->height > primary_info->max_height)
> + drm_err_once(plane->dev, "buffer size may not support on plane%d.\n",
> + to_vs_plane(plane)->id);
> +
> + if (!vs_dc_mod_supported(primary_info->modifiers, fb->modifier)) {
> + drm_err(plane->dev, "unsupported modifier on plane%d.\n", to_vs_plane(plane)->id);
> + return -EINVAL;
> + }
> +
> + crtc_state = drm_atomic_get_existing_crtc_state(new_state->state, new_state->crtc);
> + return drm_atomic_helper_check_plane_state(new_state, crtc_state,
> + primary_info->min_scale,
> + primary_info->max_scale,
> + true, true);
> +}
> +
> +static int vs_overlay_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state)
> +{
> + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
> + struct vs_drm_device *priv = to_vs_drm_private(plane->dev);
> + struct vs_dc *dc = &priv->dc;
> + struct drm_framebuffer *fb = new_state->fb;
> + const struct vs_plane_overlay_info *overlay_info;
> + struct drm_crtc_state *crtc_state;
> + int i;
> +
> + if (!new_state->crtc || !new_state->fb)
> + return 0;
> +
> + for (i = 0; i < dc->hw.info->overlay_num; i++) {
> + overlay_info = (struct vs_plane_overlay_info *)&dc->hw.info->overlay[i];
> + if (overlay_info->id == to_vs_plane(plane)->id)
> + break;
> + }
> +
> + overlay_info = &dc->hw.info->overlay[i];
> +
> + if (fb->width < overlay_info->min_width ||
> + fb->width > overlay_info->max_width ||
> + fb->height < overlay_info->min_height ||
> + fb->height > overlay_info->max_height)
> + drm_err_once(plane->dev, "buffer size may not support on plane%d.\n",
> + to_vs_plane(plane)->id);
> +
> + if (!vs_dc_mod_supported(overlay_info->modifiers, fb->modifier)) {
> + drm_err(plane->dev, "unsupported modifier on plane%d.\n", to_vs_plane(plane)->id);
> + return -EINVAL;
> +}
> +
> + crtc_state = drm_atomic_get_existing_crtc_state(new_state->state, new_state->crtc);
> + return drm_atomic_helper_check_plane_state(new_state, crtc_state,
> + overlay_info->min_scale,
> + overlay_info->max_scale,
> + true, true);
> +}
> +
> +static int vs_cursor_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state)
> +{
> + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
> + struct vs_drm_device *priv = to_vs_drm_private(plane->dev);
> + struct vs_dc *dc = &priv->dc;
> + struct drm_framebuffer *fb = new_state->fb;
> + const struct vs_plane_cursor_info *cursor_info;
> + struct drm_crtc_state *crtc_state;
> + int i;
> +
> + if (!new_state->crtc || !new_state->fb)
> + return 0;
> +
> + for (i = 0; i < dc->hw.info->cursor_num; i++) {
> + cursor_info = (struct vs_plane_cursor_info *)&dc->hw.info->cursor[i];
> + if (cursor_info->id == to_vs_plane(plane)->id)
> + break;
> + }
> +
> + cursor_info = &dc->hw.info->cursor[i];
> +
> + if (fb->width < cursor_info->min_width ||
> + fb->width > cursor_info->max_width ||
> + fb->height < cursor_info->min_height ||
> + fb->height > cursor_info->max_height)
> + drm_err_once(plane->dev, "buffer size may not support on plane%d.\n",
> + to_vs_plane(plane)->id);
> +
> + crtc_state = drm_atomic_get_existing_crtc_state(new_state->state, new_state->crtc);
> + return drm_atomic_helper_check_plane_state(new_state, crtc_state,
> + DRM_PLANE_NO_SCALING,
> + DRM_PLANE_NO_SCALING,
> + true, true);
Looking at these three functions:
- Define a common struct for plane info;
- Define a single function handling common case;
- Extend it as necessary for primary / overlay cases (or just skip the
corresponding check for cursor plane type).
> +}
> +
> +static void vs_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state)
> +{
> + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state, plane);
> + struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
> +
> + unsigned char i, num_planes, display_id, id;
> + u32 format;
> + bool is_yuv;
> + struct vs_plane *vs_plane = to_vs_plane(plane);
> + struct vs_plane_state *plane_state = to_vs_plane_state(new_state);
> + struct vs_drm_device *priv = to_vs_drm_private(plane->dev);
> + struct vs_dc *dc = &priv->dc;
> +
> + if (!new_state->fb || !new_state->crtc)
> + return;
> +
> + drm_fb_dma_sync_non_coherent(plane->dev, old_state, new_state);
> +
> + num_planes = vs_get_plane_number(new_state->fb);
> +
> + for (i = 0; i < num_planes; i++) {
> + dma_addr_t dma_addr;
> +
> + dma_addr = drm_fb_dma_get_gem_addr(new_state->fb, new_state, i);
> + plane_state->dma_addr[i] = dma_addr;
> + }
> +
> + display_id = to_vs_display_id(dc, new_state->crtc);
> + format = new_state->fb->format->format;
> + is_yuv = new_state->fb->format->is_yuv;
> + id = vs_plane->id;
> +
> + plane_hw_update_format_colorspace(dc, format, new_state->color_encoding, id, is_yuv);
> + if (new_state->visible)
> + plane_hw_update_address(dc, id, format, plane_state->dma_addr,
> + new_state->fb, &new_state->src);
> + plane_hw_update_format(dc, format, new_state->color_encoding, new_state->rotation,
> + new_state->visible, new_state->zpos, id, display_id);
> + plane_hw_update_scale(dc, &new_state->src, &new_state->dst, id,
> + display_id, new_state->rotation);
> + plane_hw_update_blend(dc, new_state->alpha, new_state->pixel_blend_mode,
> + id, display_id);
> +}
> +
> +static void vs_cursor_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state)
> +{
> + struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
> + plane);
> + struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
> + plane);
> + struct vs_drm_device *priv = to_vs_drm_private(plane->dev);
> + struct vs_dc *dc = &priv->dc;
> + unsigned char display_id;
> + u32 crtc_w, crtc_x, crtc_y;
> + s32 hotspot_x, hotspot_y;
> + dma_addr_t dma_addr;
> +
> + display_id = to_vs_display_id(dc, new_state->crtc);
> +
> + if (!new_state->fb || !new_state->crtc)
> + return;
> +
> + drm_fb_dma_sync_non_coherent(new_state->fb->dev, old_state, new_state);
> + dma_addr = drm_fb_dma_get_gem_addr(new_state->fb, new_state, 0);
> + crtc_w = new_state->crtc_w;
> +
> + if (new_state->crtc_x > 0) {
> + crtc_x = new_state->crtc_x;
> + hotspot_x = 0;
> + } else {
> + hotspot_x = -new_state->crtc_x;
> + crtc_x = 0;
> + }
> + if (new_state->crtc_y > 0) {
> + crtc_y = new_state->crtc_y;
> + hotspot_y = 0;
> + } else {
> + hotspot_y = -new_state->crtc_y;
> + crtc_y = 0;
> + }
> + dc_hw_update_cursor(&dc->hw, display_id, dma_addr, crtc_w, crtc_x,
> + crtc_y, hotspot_x, hotspot_y);
> +}
> +
> +static void vs_plane_atomic_disable(struct drm_plane *plane, struct drm_atomic_state *state)
> +{
> + struct vs_plane *vs_plane = to_vs_plane(plane);
> + struct vs_drm_device *priv = to_vs_drm_private(plane->dev);
> + struct vs_dc *dc = &priv->dc;
> +
> + dc_hw_disable_plane(dc, vs_plane->id);
> +}
> +
> +static void vs_cursor_plane_atomic_disable(struct drm_plane *plane, struct drm_atomic_state *state)
> +{
> + struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state, plane);
> + struct vs_drm_device *priv = to_vs_drm_private(plane->dev);
> + struct vs_dc *dc = &priv->dc;
> + unsigned char display_id;
> +
> + display_id = to_vs_display_id(dc, old_state->crtc);
> + dc_hw_disable_cursor(&dc->hw, display_id);
> +}
> +
> +const struct drm_plane_helper_funcs primary_plane_helpers = {
> + .atomic_check = vs_primary_plane_atomic_check,
> + .atomic_update = vs_plane_atomic_update,
> + .atomic_disable = vs_plane_atomic_disable,
> +};
> +
> +const struct drm_plane_helper_funcs overlay_plane_helpers = {
> + .atomic_check = vs_overlay_plane_atomic_check,
> + .atomic_update = vs_plane_atomic_update,
> + .atomic_disable = vs_plane_atomic_disable,
> +};
> +
> +const struct drm_plane_helper_funcs cursor_plane_helpers = {
> + .atomic_check = vs_cursor_plane_atomic_check,
> + .atomic_update = vs_cursor_plane_atomic_update,
> + .atomic_disable = vs_cursor_plane_atomic_disable,
> +};
> +
> +struct vs_plane *vs_plane_primary_create(struct drm_device *drm_dev,
> + struct vs_plane_primary_info *info,
> + unsigned int layer_num,
> + unsigned int possible_crtcs)
> +{
> + struct vs_plane *plane;
> + int ret;
> +
> + if (!info)
> + return NULL;
> +
> + plane = drmm_universal_plane_alloc(drm_dev, struct vs_plane, base,
> + possible_crtcs,
> + &vs_plane_funcs,
> + info->formats, info->num_formats,
> + info->modifiers, DRM_PLANE_TYPE_PRIMARY,
> + NULL);
> + if (IS_ERR(plane))
> + return ERR_CAST(plane);
> +
> + drm_plane_helper_add(&plane->base, &primary_plane_helpers);
> +
> + drm_plane_create_alpha_property(&plane->base);
> + drm_plane_create_blend_mode_property(&plane->base,
> + BIT(DRM_MODE_BLEND_PIXEL_NONE) |
> + BIT(DRM_MODE_BLEND_PREMULTI) |
> + BIT(DRM_MODE_BLEND_COVERAGE));
> +
> + if (info->color_encoding) {
> + ret = drm_plane_create_color_properties(&plane->base, info->color_encoding,
> + BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
> + DRM_COLOR_YCBCR_BT709,
> + DRM_COLOR_YCBCR_LIMITED_RANGE);
> + if (ret)
> + return NULL;
> + }
> +
> + if (info->rotation) {
> + ret = drm_plane_create_rotation_property(&plane->base,
> + DRM_MODE_ROTATE_0,
> + info->rotation);
> + if (ret)
> + return NULL;
> + }
> +
> + ret = drm_plane_create_zpos_property(&plane->base, info->zpos, 0, layer_num - 1);
> + if (ret)
> + return NULL;
> +
> + return plane;
> +}
> +
> +struct vs_plane *vs_plane_overlay_create(struct drm_device *drm_dev,
> + struct vs_plane_overlay_info *info,
> + unsigned int layer_num,
> + unsigned int possible_crtcs)
This looks almost like a previous function. Consider merging them.
> +{
> + struct vs_plane *plane;
> + int ret;
> +
> + if (!info)
> + return NULL;
> +
> + plane = drmm_universal_plane_alloc(drm_dev, struct vs_plane, base,
> + possible_crtcs,
> + &vs_plane_funcs,
> + info->formats, info->num_formats,
> + info->modifiers, DRM_PLANE_TYPE_OVERLAY,
> + NULL);
> + if (IS_ERR(plane))
> + return ERR_CAST(plane);
> +
> + drm_plane_helper_add(&plane->base, &overlay_plane_helpers);
> +
> + drm_plane_create_alpha_property(&plane->base);
> + drm_plane_create_blend_mode_property(&plane->base,
> + BIT(DRM_MODE_BLEND_PIXEL_NONE) |
> + BIT(DRM_MODE_BLEND_PREMULTI) |
> + BIT(DRM_MODE_BLEND_COVERAGE));
> +
> + if (info->color_encoding) {
> + ret = drm_plane_create_color_properties(&plane->base, info->color_encoding,
> + BIT(DRM_COLOR_YCBCR_LIMITED_RANGE),
> + DRM_COLOR_YCBCR_BT709,
> + DRM_COLOR_YCBCR_LIMITED_RANGE);
> + if (ret)
> + return NULL;
> + }
> +
> + if (info->rotation) {
> + ret = drm_plane_create_rotation_property(&plane->base,
> + DRM_MODE_ROTATE_0,
> + info->rotation);
> + if (ret)
> + return NULL;
> + }
> +
> + ret = drm_plane_create_zpos_property(&plane->base, info->zpos, 0, layer_num - 1);
> + if (ret)
> + return NULL;
> +
> + return plane;
> +}
> +
> +struct vs_plane *vs_plane_cursor_create(struct drm_device *drm_dev,
> + struct vs_plane_cursor_info *info,
> + unsigned int possible_crtcs)
> +{
> + struct vs_plane *plane;
> + int ret;
> +
> + if (!info)
> + return NULL;
> +
> + plane = drmm_universal_plane_alloc(drm_dev, struct vs_plane, base,
> + possible_crtcs,
> + &vs_plane_funcs,
> + info->formats, info->num_formats,
> + NULL, DRM_PLANE_TYPE_CURSOR,
> + NULL);
> + if (IS_ERR(plane))
> + return ERR_CAST(plane);
> +
> + drm_plane_helper_add(&plane->base, &cursor_plane_helpers);
> +
> + ret = drm_plane_create_zpos_immutable_property(&plane->base, info->zpos);
> + if (ret)
> + return NULL;
> +
> + return plane;
> +}
> diff --git a/drivers/gpu/drm/verisilicon/vs_plane.h b/drivers/gpu/drm/verisilicon/vs_plane.h
> new file mode 100644
> index 000000000000..0416146226a8
> --- /dev/null
> +++ b/drivers/gpu/drm/verisilicon/vs_plane.h
> @@ -0,0 +1,26 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd.
> + */
> +
> +#ifndef __VS_PLANE_H__
> +#define __VS_PLANE_H__
> +
> +#include <drm/drm_plane_helper.h>
> +
> +#include "vs_drv.h"
> +
> +struct vs_plane *vs_plane_primary_create(struct drm_device *drm_dev,
> + struct vs_plane_primary_info *info,
> + unsigned int layer_num,
> + unsigned int possible_crtcs);
> +
> +struct vs_plane *vs_plane_overlay_create(struct drm_device *drm_dev,
> + struct vs_plane_overlay_info *info,
> + unsigned int layer_num,
> + unsigned int possible_crtcs);
> +
> +struct vs_plane *vs_plane_cursor_create(struct drm_device *drm_dev,
> + struct vs_plane_cursor_info *info,
> + unsigned int possible_crtcs);
> +#endif /* __VS_PLANE_H__ */
> --
> 2.27.0
>
--
With best wishes
Dmitry
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