[Linaro-mm-sig] [PATCH v1 v1 5/7] drm/vs: Register DRM device

Implement drm device registration interface

Signed-off-by: Keith Zhao keith.zhao@starfivetech.com --- drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/verisilicon/Kconfig | 25 ++ drivers/gpu/drm/verisilicon/Makefile | 13 + drivers/gpu/drm/verisilicon/vs_drv.c | 273 +++++++++++++++++++++ drivers/gpu/drm/verisilicon/vs_drv.h | 54 ++++ drivers/gpu/drm/verisilicon/vs_gem.c | 298 +++++++++++++++++++++++ drivers/gpu/drm/verisilicon/vs_gem.h | 50 ++++ drivers/gpu/drm/verisilicon/vs_modeset.c | 92 +++++++ drivers/gpu/drm/verisilicon/vs_modeset.h | 13 + include/uapi/drm/vs_drm.h | 50 ++++ 11 files changed, 871 insertions(+) create mode 100644 drivers/gpu/drm/verisilicon/Kconfig create mode 100644 drivers/gpu/drm/verisilicon/Makefile create mode 100644 drivers/gpu/drm/verisilicon/vs_drv.c create mode 100644 drivers/gpu/drm/verisilicon/vs_drv.h create mode 100644 drivers/gpu/drm/verisilicon/vs_gem.c create mode 100644 drivers/gpu/drm/verisilicon/vs_gem.h create mode 100644 drivers/gpu/drm/verisilicon/vs_modeset.c create mode 100644 drivers/gpu/drm/verisilicon/vs_modeset.h create mode 100644 include/uapi/drm/vs_drm.h

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index afb3b2f5f..9ede80ef9 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -363,6 +363,8 @@ source "drivers/gpu/drm/solomon/Kconfig"

source "drivers/gpu/drm/sprd/Kconfig"

+source "drivers/gpu/drm/verisilicon/Kconfig" + config DRM_HYPERV tristate "DRM Support for Hyper-V synthetic video device" depends on DRM && PCI && MMU && HYPERV diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 7a09a89b4..6db3bc397 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -194,3 +194,4 @@ obj-y += gud/ obj-$(CONFIG_DRM_HYPERV) += hyperv/ obj-y += solomon/ obj-$(CONFIG_DRM_SPRD) += sprd/ +obj-$(CONFIG_DRM_VERISILICON) += verisilicon/ diff --git a/drivers/gpu/drm/verisilicon/Kconfig b/drivers/gpu/drm/verisilicon/Kconfig new file mode 100644 index 000000000..fcc39dded --- /dev/null +++ b/drivers/gpu/drm/verisilicon/Kconfig @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: GPL-2.0 +config DRM_VERISILICON + tristate "DRM Support for VeriSilicon" + depends on DRM + select DRM_KMS_HELPER + select DRM_GEM_DMA_HELPER + select CMA + select DMA_CMA + help + Choose this option if you have a VeriSilicon soc chipset. + This driver provides VeriSilicon kernel mode + setting and buffer management. It does not + provide 2D or 3D acceleration. + +if DRM_VERISILICON + +config STARFIVE_HDMI + bool "Starfive specific extensions HDMI" + help + This selects support for StarFive SoC specific extensions + for the Innosilicon HDMI driver. If you want to enable + HDMI on JH7110 based SoC, you should select this option. + + To compile this driver as a module, choose M here. +endif diff --git a/drivers/gpu/drm/verisilicon/Makefile b/drivers/gpu/drm/verisilicon/Makefile new file mode 100644 index 000000000..26cc7e21b --- /dev/null +++ b/drivers/gpu/drm/verisilicon/Makefile @@ -0,0 +1,13 @@ +# SPDX-License-Identifier: GPL-2.0 + +vs_drm-objs := vs_dc_hw.o \ + vs_dc.o \ + vs_crtc.o \ + vs_drv.o \ + vs_modeset.o \ + vs_gem.o \ + vs_plane.o + +vs_drm-$(CONFIG_STARFIVE_HDMI) += starfive_hdmi.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 new file mode 100644 index 000000000..69591e640 --- /dev/null +++ b/drivers/gpu/drm/verisilicon/vs_drv.c @@ -0,0 +1,273 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd. + */ + +#include <linux/clk.h> +#include <linux/component.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/iommu.h> +#include <linux/of_graph.h> +#include <linux/of_reserved_mem.h> +#include <linux/pm_runtime.h> +#include <linux/reset.h> +#include <linux/version.h> + +#include <drm/drm_aperture.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_crtc.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_debugfs.h> +#include <drm/drm_drv.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_fbdev_generic.h> +#include <drm/drm_file.h> +#include <drm/drm_fourcc.h> +#include <drm/drm_ioctl.h> +#include <drm/drm_of.h> +#include <drm/drm_prime.h> +#include <drm/drm_probe_helper.h> +#include <drm/drm_vblank.h> + +#include "vs_drv.h" +#include "vs_modeset.h" +#include "vs_gem.h" + +#define DRV_NAME "starfive" +#define DRV_DESC "Starfive DRM driver" +#define DRV_DATE "202305161" +#define DRV_MAJOR 1 +#define DRV_MINOR 0 + +static struct platform_driver vs_drm_platform_driver; + +static const struct file_operations fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = drm_ioctl, + .compat_ioctl = drm_compat_ioctl, + .poll = drm_poll, + .read = drm_read, + .mmap = drm_gem_mmap, +}; + +static struct drm_driver vs_drm_driver = { + .driver_features = DRIVER_MODESET | DRIVER_ATOMIC | DRIVER_GEM, + .lastclose = drm_fb_helper_lastclose, + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_import_sg_table = vs_gem_prime_import_sg_table, + .gem_prime_mmap = drm_gem_prime_mmap, + .dumb_create = vs_gem_dumb_create, + .fops = &fops, + .name = DRV_NAME, + .desc = DRV_DESC, + .date = DRV_DATE, + .major = DRV_MAJOR, + .minor = DRV_MINOR, +}; + +void vs_drm_update_pitch_alignment(struct drm_device *drm_dev, + unsigned int alignment) +{ + struct vs_drm_private *priv = to_vs_dev(drm_dev); + + if (alignment > priv->pitch_alignment) + priv->pitch_alignment = alignment; +} + +static int vs_drm_bind(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct vs_drm_private *priv; + int ret; + static u64 dma_mask = DMA_BIT_MASK(40); + struct drm_device *drm_dev; + + /* Remove existing drivers that may own the framebuffer memory. */ + ret = drm_aperture_remove_framebuffers(&vs_drm_driver); + if (ret) { + dev_err(dev, + "Failed to remove existing framebuffers - %d.\n", + ret); + return ret; + } + + priv = devm_drm_dev_alloc(dev, &vs_drm_driver, struct vs_drm_private, base); + if (IS_ERR(priv)) + return PTR_ERR(priv); + + priv->pitch_alignment = 64; + priv->dma_dev = priv->base.dev; + priv->dma_dev->coherent_dma_mask = dma_mask; + drm_dev = &priv->base; + platform_set_drvdata(pdev, drm_dev); + + vs_mode_config_init(drm_dev); + + /* Now try and bind all our sub-components */ + ret = component_bind_all(dev, drm_dev); + if (ret) + goto err_mode; + + ret = drm_vblank_init(drm_dev, drm_dev->mode_config.num_crtc); + if (ret) + goto err_bind; + + drm_mode_config_reset(drm_dev); + + drm_kms_helper_poll_init(drm_dev); + + ret = drm_dev_register(drm_dev, 0); + if (ret) + goto err_helper; + + drm_fbdev_generic_setup(drm_dev, 32); + + return 0; + +err_helper: + drm_kms_helper_poll_fini(drm_dev); +err_bind: + component_unbind_all(drm_dev->dev, drm_dev); +err_mode: + drm_mode_config_cleanup(drm_dev); + + return ret; +} + +static void vs_drm_unbind(struct device *dev) +{ + struct drm_device *drm_dev = dev_get_drvdata(dev); + + drm_dev_unregister(drm_dev); + + drm_kms_helper_poll_fini(drm_dev); + + component_unbind_all(drm_dev->dev, drm_dev); +} + +static const struct component_master_ops vs_drm_ops = { + .bind = vs_drm_bind, + .unbind = vs_drm_unbind, +}; + +static struct platform_driver *drm_sub_drivers[] = { + + + /* connector + encoder*/ +#ifdef CONFIG_STARFIVE_HDMI + &starfive_hdmi_driver, +#endif + +}; + +#define NUM_DRM_DRIVERS \ + (sizeof(drm_sub_drivers) / sizeof(struct platform_driver *)) + +static int compare_dev(struct device *dev, void *data) +{ + return dev == (struct device *)data; +} + +static struct component_match *vs_drm_match_add(struct device *dev) +{ + struct component_match *match = NULL; + int i; + + for (i = 0; i < NUM_DRM_DRIVERS; ++i) { + struct platform_driver *drv = drm_sub_drivers[i]; + struct device *p = NULL, *d; + + while ((d = platform_find_device_by_driver(p, &drv->driver))) { + put_device(p); + + component_match_add(dev, &match, compare_dev, d); + p = d; + } + put_device(p); + } + + return match ?: ERR_PTR(-ENODEV); +} + +static int vs_drm_platform_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct component_match *match; + + match = vs_drm_match_add(dev); + if (IS_ERR(match)) + return PTR_ERR(match); + + return component_master_add_with_match(dev, &vs_drm_ops, match); +} + +static int vs_drm_platform_remove(struct platform_device *pdev) +{ + component_master_del(&pdev->dev, &vs_drm_ops); + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int vs_drm_suspend(struct device *dev) +{ + return drm_mode_config_helper_suspend(dev_get_drvdata(dev)); +} + +static int vs_drm_resume(struct device *dev) +{ + drm_mode_config_helper_resume(dev_get_drvdata(dev)); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(vs_drm_pm_ops, vs_drm_suspend, vs_drm_resume); + +static const struct of_device_id vs_drm_dt_ids[] = { + { .compatible = "starfive,display-subsystem", }, + { }, +}; + +MODULE_DEVICE_TABLE(of, vs_drm_dt_ids); + +static struct platform_driver vs_drm_platform_driver = { + .probe = vs_drm_platform_probe, + .remove = vs_drm_platform_remove, + + .driver = { + .name = DRV_NAME, + .of_match_table = vs_drm_dt_ids, + .pm = &vs_drm_pm_ops, + }, +}; + +static int __init vs_drm_init(void) +{ + int ret; + + ret = platform_register_drivers(drm_sub_drivers, NUM_DRM_DRIVERS); + if (ret) + return ret; + + ret = platform_driver_register(&vs_drm_platform_driver); + if (ret) + platform_unregister_drivers(drm_sub_drivers, NUM_DRM_DRIVERS); + + return ret; +} + +static void __exit vs_drm_fini(void) +{ + platform_driver_unregister(&vs_drm_platform_driver); + platform_unregister_drivers(drm_sub_drivers, NUM_DRM_DRIVERS); +} + +module_init(vs_drm_init); +module_exit(vs_drm_fini); + +MODULE_DESCRIPTION("VeriSilicon DRM Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/verisilicon/vs_drv.h b/drivers/gpu/drm/verisilicon/vs_drv.h new file mode 100644 index 000000000..6ddc99dcf --- /dev/null +++ b/drivers/gpu/drm/verisilicon/vs_drv.h @@ -0,0 +1,54 @@ +/* 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/version.h> +#include <drm/drm_drv.h> +#include <drm/drm_gem.h> +#include <drm/drm_managed.h> + +/* + * + * @dma_dev: device for DMA API. + * - use the first attached device if support iommu + else use drm device (only contiguous buffer support) + * @domain: iommu domain for DRM. + * - all DC IOMMU share same domain to reduce mapping + * @pitch_alignment: buffer pitch alignment required by sub-devices. + * + */ +struct vs_drm_private { + struct drm_device base; + struct device *dma_dev; + struct iommu_domain *domain; + unsigned int pitch_alignment; +}; + +static inline struct vs_drm_private * +to_vs_dev(const struct drm_device *dev) +{ + return container_of(dev, struct vs_drm_private, base); +} + +void vs_drm_update_pitch_alignment(struct drm_device *drm_dev, + unsigned int alignment); + + +static inline bool is_iommu_enabled(struct drm_device *dev) +{ + struct vs_drm_private *priv = to_vs_dev(dev); + + return priv->domain ? true : false; +} + +#ifdef CONFIG_STARFIVE_HDMI +extern struct platform_driver starfive_hdmi_driver; +#endif + +#endif /* __VS_DRV_H__ */ diff --git a/drivers/gpu/drm/verisilicon/vs_gem.c b/drivers/gpu/drm/verisilicon/vs_gem.c new file mode 100644 index 000000000..a7d5a5c7b --- /dev/null +++ b/drivers/gpu/drm/verisilicon/vs_gem.c @@ -0,0 +1,298 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd. + */ + +#include <linux/dma-buf.h> +#include <linux/of_reserved_mem.h> +#include <drm/drm_gem_dma_helper.h> + +#include "vs_drv.h" +#include "vs_gem.h" + +MODULE_IMPORT_NS(DMA_BUF); + +static const struct drm_gem_object_funcs vs_gem_default_funcs; + +static int vs_gem_alloc_buf(struct vs_gem_object *vs_obj) +{ + struct drm_device *dev = vs_obj->base.base.dev; + unsigned int nr_pages; + struct sg_table sgt; + int ret = -ENOMEM; + + if (vs_obj->base.dma_addr) { + drm_dbg_kms(dev, "already allocated.\n"); + return 0; + } + + vs_obj->base.dma_addr = DMA_ATTR_WRITE_COMBINE | DMA_ATTR_FORCE_CONTIGUOUS + | DMA_ATTR_NO_KERNEL_MAPPING; + + nr_pages = vs_obj->base.base.size >> PAGE_SHIFT; + + vs_obj->pages = kvmalloc_array(nr_pages, sizeof(struct page *), + GFP_KERNEL | __GFP_ZERO); + if (!vs_obj->pages) + return -ENOMEM; + + vs_obj->cookie = dma_alloc_attrs(dev->dev, vs_obj->base.base.size, + &vs_obj->base.dma_addr, GFP_KERNEL, + vs_obj->dma_attrs); + + if (!vs_obj->cookie) { + dev_err(dev->dev, "failed to allocate buffer.\n"); + goto err_free; + } + + vs_obj->iova = vs_obj->base.dma_addr; + + ret = dma_get_sgtable_attrs(dev->dev, &sgt, + vs_obj->cookie, vs_obj->base.dma_addr, + vs_obj->base.base.size, vs_obj->dma_attrs); + if (ret < 0) { + dev_err(dev->dev, "failed to get sgtable.\n"); + goto err_mem_free; + } + + if (drm_prime_sg_to_page_array(&sgt, vs_obj->pages, nr_pages)) { + dev_err(dev->dev, "invalid sgtable.\n"); + ret = -EINVAL; + goto err_sgt_free; + } + + sg_free_table(&sgt); + + return 0; + +err_sgt_free: + sg_free_table(&sgt); +err_mem_free: + dma_free_attrs(dev->dev, vs_obj->base.base.size, vs_obj->cookie, + vs_obj->base.dma_addr, vs_obj->dma_attrs); +err_free: + kvfree(vs_obj->pages); + + return ret; +} + +static void vs_gem_free_buf(struct vs_gem_object *vs_obj) +{ + struct drm_device *dev = vs_obj->base.base.dev; + + if (!vs_obj->base.dma_addr) { + drm_dbg_kms(dev, "dma_addr is invalid.\n"); + return; + } + + dma_free_attrs(dev->dev, vs_obj->base.base.size, vs_obj->cookie, + (dma_addr_t)vs_obj->base.dma_addr, + vs_obj->dma_attrs); + + kvfree(vs_obj->pages); +} + +static void vs_gem_free_object(struct drm_gem_object *obj) +{ + struct vs_gem_object *vs_obj = to_vs_gem_object(obj); + + if (obj->import_attach) + drm_prime_gem_destroy(obj, vs_obj->base.sgt); + else + vs_gem_free_buf(vs_obj); + + drm_gem_object_release(obj); + + kfree(vs_obj); +} + +static struct vs_gem_object *vs_gem_alloc_object(struct drm_device *dev, + size_t size) +{ + struct vs_gem_object *vs_obj; + struct drm_gem_object *obj; + int ret; + + vs_obj = kzalloc(sizeof(*vs_obj), GFP_KERNEL); + if (!vs_obj) + return ERR_PTR(-ENOMEM); + + vs_obj->base.base.size = size; + obj = &vs_obj->base.base; + + ret = drm_gem_object_init(dev, obj, size); + if (ret) + goto err_free; + + vs_obj->base.base.funcs = &vs_gem_default_funcs; + + ret = drm_gem_create_mmap_offset(obj); + if (ret) { + drm_gem_object_release(obj); + goto err_free; + } + + return vs_obj; + +err_free: + kfree(vs_obj); + return ERR_PTR(ret); +} + +static struct vs_gem_object *vs_gem_create_object(struct drm_device *dev, + size_t size) +{ + struct vs_gem_object *vs_obj; + int ret; + + size = PAGE_ALIGN(size); + + vs_obj = vs_gem_alloc_object(dev, size); + if (IS_ERR(vs_obj)) + return vs_obj; + + ret = vs_gem_alloc_buf(vs_obj); + if (ret) { + drm_gem_object_release(&vs_obj->base.base); + kfree(vs_obj); + return ERR_PTR(ret); + } + + return vs_obj; +} + +static struct vs_gem_object *vs_gem_create_with_handle(struct drm_device *dev, + struct drm_file *file, + size_t size, + unsigned int *handle) +{ + struct vs_gem_object *vs_obj; + struct drm_gem_object *obj; + int ret; + + vs_obj = vs_gem_create_object(dev, size); + if (IS_ERR(vs_obj)) + return vs_obj; + + obj = &vs_obj->base.base; + + ret = drm_gem_handle_create(file, obj, handle); + + drm_gem_object_put(obj); + + if (ret) + return ERR_PTR(ret); + + return vs_obj; +} + +static struct sg_table *vs_gem_prime_get_sg_table(struct drm_gem_object *obj) +{ + struct vs_gem_object *vs_obj = to_vs_gem_object(obj); + + return drm_prime_pages_to_sg(obj->dev, vs_obj->pages, + vs_obj->base.base.size >> PAGE_SHIFT); +} + +static int vs_gem_prime_vmap(struct drm_gem_object *obj, struct iosys_map *map) +{ + struct vs_gem_object *vs_obj = to_vs_gem_object(obj); + + vs_obj->base.vaddr = vs_obj->dma_attrs & DMA_ATTR_NO_KERNEL_MAPPING ? + page_address(vs_obj->cookie) : vs_obj->cookie; + + return drm_gem_dma_vmap(&vs_obj->base, map); +} + +static const struct vm_operations_struct vs_vm_ops = { + .open = drm_gem_vm_open, + .close = drm_gem_vm_close, +}; + +static const struct drm_gem_object_funcs vs_gem_default_funcs = { + .free = vs_gem_free_object, + .get_sg_table = vs_gem_prime_get_sg_table, + .vmap = vs_gem_prime_vmap, + .mmap = drm_gem_dma_object_mmap, + .vm_ops = &vs_vm_ops, +}; + +int vs_gem_dumb_create(struct drm_file *file, + struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + struct vs_drm_private *priv = to_vs_dev(dev); + struct vs_gem_object *vs_obj; + unsigned int pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + + if (args->bpp % 10) + args->pitch = ALIGN(pitch, priv->pitch_alignment); + else + /* for costum 10bit format with no bit gaps */ + args->pitch = pitch; + args->size = PAGE_ALIGN(args->pitch * args->height); + vs_obj = vs_gem_create_with_handle(dev, file, args->size, + &args->handle); + return PTR_ERR_OR_ZERO(vs_obj); +} + +struct drm_gem_object * +vs_gem_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, + struct sg_table *sgt) +{ + struct vs_gem_object *vs_obj; + int npages; + int ret; + struct scatterlist *s; + u32 i; + dma_addr_t expected; + size_t size = attach->dmabuf->size; + + size = PAGE_ALIGN(size); + + vs_obj = vs_gem_alloc_object(dev, size); + if (IS_ERR(vs_obj)) + return ERR_CAST(vs_obj); + + expected = sg_dma_address(sgt->sgl); + for_each_sg(sgt->sgl, s, sgt->nents, i) { + if (sg_dma_address(s) != expected) { + DRM_ERROR("sg_table is not contiguous"); + ret = -EINVAL; + goto err; + } + if (sg_dma_len(s) & (PAGE_SIZE - 1)) { + ret = -EINVAL; + goto err; + } + if (i == 0) + vs_obj->iova = sg_dma_address(s); + expected = sg_dma_address(s) + sg_dma_len(s); + } + + vs_obj->base.dma_addr = sg_dma_address(sgt->sgl); + + npages = vs_obj->base.base.size >> PAGE_SHIFT; + vs_obj->pages = kvmalloc_array(npages, sizeof(struct page *), + GFP_KERNEL); + if (!vs_obj->pages) { + ret = -ENOMEM; + goto err; + } + + ret = drm_prime_sg_to_page_array(sgt, vs_obj->pages, npages); + if (ret) + goto err_free_page; + + vs_obj->base.sgt = sgt; + + return &vs_obj->base.base; + +err_free_page: + kvfree(vs_obj->pages); +err: + vs_gem_free_object(&vs_obj->base.base); + + return ERR_PTR(ret); +} diff --git a/drivers/gpu/drm/verisilicon/vs_gem.h b/drivers/gpu/drm/verisilicon/vs_gem.h new file mode 100644 index 000000000..d9ff6d23b --- /dev/null +++ b/drivers/gpu/drm/verisilicon/vs_gem.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2023 VeriSilicon Holdings Co., Ltd. + */ + +#ifndef __VS_GEM_H__ +#define __VS_GEM_H__ + +#include <linux/dma-buf.h> + +#include <drm/drm_gem.h> +#include <drm/drm_gem_dma_helper.h> +#include <drm/drm_prime.h> + +#include "vs_drv.h" +/* + * + * @base: drm_gem_dma_object. + * @cookie: cookie returned by dma_alloc_attrs + * - not kernel virtual address with DMA_ATTR_NO_KERNEL_MAPPING + * @dma_attrs: attribute for DMA API + * @get_pages: flag for manually applying for non-contiguous memory. + * @pages: Array of backing pages. + * + */ +struct vs_gem_object { + struct drm_gem_dma_object base; + void *cookie; + u32 iova; + unsigned long dma_attrs; + bool get_pages; + struct page **pages; +}; + +static inline struct vs_gem_object * +to_vs_gem_object(const struct drm_gem_object *bo) +{ + return container_of(to_drm_gem_dma_obj(bo), struct vs_gem_object, base); +} + +int vs_gem_dumb_create(struct drm_file *file_priv, + struct drm_device *drm, + struct drm_mode_create_dumb *args); + +struct drm_gem_object * +vs_gem_prime_import_sg_table(struct drm_device *dev, + struct dma_buf_attachment *attach, + struct sg_table *sgt); + +#endif /* __VS_GEM_H__ */ diff --git a/drivers/gpu/drm/verisilicon/vs_modeset.c b/drivers/gpu/drm/verisilicon/vs_modeset.c new file mode 100644 index 000000000..cd0bdf530 --- /dev/null +++ b/drivers/gpu/drm/verisilicon/vs_modeset.c @@ -0,0 +1,92 @@ +// 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 <drm/drm_gem_dma_helper.h> + +#include "vs_modeset.h" +#include "vs_gem.h" + +#define fourcc_mod_vs_get_type(val) \ + (((val) & DRM_FORMAT_MOD_VS_TYPE_MASK) >> 54) + +struct vs_gem_object *vs_fb_get_gem_obj(struct drm_framebuffer *fb, + unsigned char plane) +{ + if (plane > DRM_FORMAT_MAX_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 = drm_gem_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) +{ + drm_mode_config_init(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_modeset.h b/drivers/gpu/drm/verisilicon/vs_modeset.h new file mode 100644 index 000000000..2e1f04a8a --- /dev/null +++ b/drivers/gpu/drm/verisilicon/vs_modeset.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 VeriSilicon Holdings Co., Ltd. + */ + +#ifndef __VS_FB_H__ +#define __VS_FB_H__ + +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__ */ diff --git a/include/uapi/drm/vs_drm.h b/include/uapi/drm/vs_drm.h new file mode 100644 index 000000000..96b7fc95d --- /dev/null +++ b/include/uapi/drm/vs_drm.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ +/* + * Copyright (C) 2020 VeriSilicon Holdings Co., Ltd. + */ + +#ifndef __VS_DRM_H__ +#define __VS_DRM_H__ + +#include "drm.h" + +enum drm_vs_degamma_mode { + VS_DEGAMMA_DISABLE = 0, + VS_DEGAMMA_BT709 = 1, + VS_DEGAMMA_BT2020 = 2, +}; + +enum drm_vs_sync_dc_mode { + VS_SINGLE_DC = 0, + VS_MULTI_DC_PRIMARY = 1, + VS_MULTI_DC_SECONDARY = 2, +}; + +enum drm_vs_mmu_prefetch_mode { + VS_MMU_PREFETCH_DISABLE = 0, + VS_MMU_PREFETCH_ENABLE = 1, +}; + +struct drm_vs_watermark { + __u32 watermark; + __u8 qos_low; + __u8 qos_high; +}; + +struct drm_vs_color_mgmt { + __u32 colorkey; + __u32 colorkey_high; + __u32 clear_value; + bool clear_enable; + bool transparency; +}; + +struct drm_vs_roi { + bool enable; + __u16 roi_x; + __u16 roi_y; + __u16 roi_w; + __u16 roi_h; +}; + +#endif /* __VS_DRM_H__ */