Add mode setting functions for JH7110 SoC.
Signed-off-by: Keith Zhao keith.zhao@starfivetech.com --- drivers/gpu/drm/verisilicon/Makefile | 1 + drivers/gpu/drm/verisilicon/vs_drv.c | 3 + drivers/gpu/drm/verisilicon/vs_fb.c | 181 +++++++++++++++++++++++++++ drivers/gpu/drm/verisilicon/vs_fb.h | 15 +++ 4 files changed, 200 insertions(+) create mode 100644 drivers/gpu/drm/verisilicon/vs_fb.c create mode 100644 drivers/gpu/drm/verisilicon/vs_fb.h
diff --git a/drivers/gpu/drm/verisilicon/Makefile b/drivers/gpu/drm/verisilicon/Makefile index 30360e370e47..38254dc5d98d 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_drv.o \ + vs_fb.o \ vs_gem.o
obj-$(CONFIG_DRM_VERISILICON) += vs_drm.o diff --git a/drivers/gpu/drm/verisilicon/vs_drv.c b/drivers/gpu/drm/verisilicon/vs_drv.c index e0a2fc43b55f..d84aacd751bc 100644 --- a/drivers/gpu/drm/verisilicon/vs_drv.c +++ b/drivers/gpu/drm/verisilicon/vs_drv.c @@ -30,6 +30,7 @@ #include <drm/drm_vblank.h>
#include "vs_drv.h" +#include "vs_fb.h" #include "vs_gem.h"
#define DRV_NAME "starfive" @@ -118,6 +119,8 @@ static int vs_drm_bind(struct device *dev) if (ret) goto err_mode;
+ vs_mode_config_init(drm_dev); + ret = drm_vblank_init(drm_dev, drm_dev->mode_config.num_crtc); if (ret) goto err_bind; diff --git a/drivers/gpu/drm/verisilicon/vs_fb.c b/drivers/gpu/drm/verisilicon/vs_fb.c new file mode 100644 index 000000000000..3e85f7365084 --- /dev/null +++ b/drivers/gpu/drm/verisilicon/vs_fb.c @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd. + */ + +#include <linux/module.h> +#include <linux/version.h> + +#include <drm/drm_damage_helper.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_framebuffer.h> +#include <drm/drm_gem.h> +#include <drm/drm_gem_framebuffer_helper.h> + +#include "vs_fb.h" +#include "vs_gem.h" + +#define fourcc_mod_vs_get_type(val) \ + (((val) & DRM_FORMAT_MOD_VS_TYPE_MASK) >> 54) + +static struct drm_framebuffer_funcs vs_fb_funcs = { + .create_handle = drm_gem_fb_create_handle, + .destroy = drm_gem_fb_destroy, + .dirty = drm_atomic_helper_dirtyfb, +}; + +static struct drm_framebuffer * +vs_fb_alloc(struct drm_device *dev, const struct drm_mode_fb_cmd2 *mode_cmd, + struct vs_gem_object **obj, unsigned int num_planes) +{ + struct drm_framebuffer *fb; + int ret, i; + + fb = kzalloc(sizeof(*fb), GFP_KERNEL); + if (!fb) + return ERR_PTR(-ENOMEM); + + drm_helper_mode_fill_fb_struct(dev, fb, mode_cmd); + + for (i = 0; i < num_planes; i++) + fb->obj[i] = &obj[i]->base; + + ret = drm_framebuffer_init(dev, fb, &vs_fb_funcs); + if (ret) { + dev_err(dev->dev, "Failed to initialize framebuffer: %d\n", + ret); + kfree(fb); + return ERR_PTR(ret); + } + + return fb; +} + +static struct drm_framebuffer *vs_fb_create(struct drm_device *dev, + struct drm_file *file_priv, + const struct drm_mode_fb_cmd2 *mode_cmd) +{ + struct drm_framebuffer *fb; + const struct drm_format_info *info; + struct vs_gem_object *objs[MAX_NUM_PLANES]; + struct drm_gem_object *obj; + unsigned int height, size; + unsigned char i, num_planes; + int ret = 0; + + info = drm_get_format_info(dev, mode_cmd); + if (!info) + return ERR_PTR(-EINVAL); + + num_planes = info->num_planes; + if (num_planes > MAX_NUM_PLANES) + return ERR_PTR(-EINVAL); + + for (i = 0; i < num_planes; i++) { + obj = drm_gem_object_lookup(file_priv, mode_cmd->handles[i]); + if (!obj) { + dev_err(dev->dev, "Failed to lookup GEM object.\n"); + ret = -ENXIO; + goto err; + } + + height = drm_format_info_plane_height(info, + mode_cmd->height, i); + + size = height * mode_cmd->pitches[i] + mode_cmd->offsets[i]; + + if (obj->size < size) { + drm_gem_object_put(obj); + + ret = -EINVAL; + goto err; + } + + objs[i] = to_vs_gem_object(obj); + } + + fb = vs_fb_alloc(dev, mode_cmd, objs, i); + if (IS_ERR(fb)) { + ret = PTR_ERR(fb); + goto err; + } + + return fb; + +err: + for (; i > 0; i--) + drm_gem_object_put(&objs[i - 1]->base); + + return ERR_PTR(ret); +} + +struct vs_gem_object *vs_fb_get_gem_obj(struct drm_framebuffer *fb, + unsigned char plane) +{ + if (plane > MAX_NUM_PLANES) + return NULL; + + return to_vs_gem_object(fb->obj[plane]); +} + +static const struct drm_format_info vs_formats[] = { + {.format = DRM_FORMAT_NV12, .depth = 0, .num_planes = 2, .char_per_block = { 20, 40, 0 }, + .block_w = { 4, 4, 0 }, .block_h = { 4, 4, 0 }, .hsub = 2, .vsub = 2, .is_yuv = true}, + {.format = DRM_FORMAT_YUV444, .depth = 0, .num_planes = 3, .char_per_block = { 20, 20, 20 }, + .block_w = { 4, 4, 4 }, .block_h = { 4, 4, 4 }, .hsub = 1, .vsub = 1, .is_yuv = true}, +}; + +static const struct drm_format_info * +vs_lookup_format_info(const struct drm_format_info formats[], + int num_formats, u32 format) +{ + int i; + + for (i = 0; i < num_formats; i++) { + if (formats[i].format == format) + return &formats[i]; + } + + return NULL; +} + +static const struct drm_format_info * +vs_get_format_info(const struct drm_mode_fb_cmd2 *cmd) +{ + if (fourcc_mod_vs_get_type(cmd->modifier[0]) == + DRM_FORMAT_MOD_VS_TYPE_CUSTOM_10BIT) + return vs_lookup_format_info(vs_formats, ARRAY_SIZE(vs_formats), + cmd->pixel_format); + else + return NULL; +} + +static const struct drm_mode_config_funcs vs_mode_config_funcs = { + .fb_create = vs_fb_create, + .get_format_info = vs_get_format_info, + .output_poll_changed = drm_fb_helper_output_poll_changed, + .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) +{ + dev->mode_config.fb_modifiers_not_supported = false; + + if (dev->mode_config.max_width == 0 || + dev->mode_config.max_height == 0) { + dev->mode_config.min_width = 0; + dev->mode_config.min_height = 0; + dev->mode_config.max_width = 4096; + dev->mode_config.max_height = 4096; + } + 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_fb.h b/drivers/gpu/drm/verisilicon/vs_fb.h new file mode 100644 index 000000000000..78dda8e42894 --- /dev/null +++ b/drivers/gpu/drm/verisilicon/vs_fb.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd. + */ + +#ifndef __VS_FB_H__ +#define __VS_FB_H__ + +#define MAX_NUM_PLANES 3 /* colour format plane */ + +struct vs_gem_object *vs_fb_get_gem_obj(struct drm_framebuffer *fb, + unsigned char plane); + +void vs_mode_config_init(struct drm_device *dev); +#endif /* __VS_FB_H__ */