Hi Keith Am 02.06.23 um 09:40 schrieb Keith Zhao:
Add mode setting functions for JH7110 SoC.Signed-off-by: Keith Zhao <keith.z...@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 +++
I'd call these files vs_modeset.{c,h} to be consistent with the rest of the drivers.
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-2.0vs_drm-objs := vs_drv.o \+ vs_fb.o \ vs_gem.oobj-$(CONFIG_DRM_VERISILICON) += vs_drm.odiff --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,
Maybe I'm missing something here, but it looks like you can call drm_gem_fb_create_with_funcs() to create the framebuffer.
+ .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)
+{
If possible, move the call to drm_mode_config_init() into this function.
+ 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 */
There's DRM_FORMAT_MAX_PLANES already. Please don't introduce a constant with the same purpose.
Best regards Thomas
+ +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__ */
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Frankenstrasse 146, 90461 Nuernberg, Germany GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman HRB 36809 (AG Nuernberg)
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