Add DRM master driver for hi6220 SoC which used in HiKey board. Add dumb buffer feature. Add prime dmabuf feature.
Signed-off-by: Xinliang Liu xinliang.liu@linaro.org Signed-off-by: Xinwei Kong kong.kongxinwei@hisilicon.com Signed-off-by: Andy Green andy.green@linaro.org --- drivers/gpu/drm/Kconfig | 2 + drivers/gpu/drm/Makefile | 1 + drivers/gpu/drm/hisilicon/Kconfig | 9 ++ drivers/gpu/drm/hisilicon/Makefile | 3 + drivers/gpu/drm/hisilicon/hisi_drm_drv.c | 214 +++++++++++++++++++++++++++++++ 5 files changed, 229 insertions(+) create mode 100644 drivers/gpu/drm/hisilicon/Kconfig create mode 100644 drivers/gpu/drm/hisilicon/Makefile create mode 100644 drivers/gpu/drm/hisilicon/hisi_drm_drv.c
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 8773fad..038aae8 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -274,3 +274,5 @@ source "drivers/gpu/drm/amd/amdkfd/Kconfig" source "drivers/gpu/drm/imx/Kconfig"
source "drivers/gpu/drm/vc4/Kconfig" + +source "drivers/gpu/drm/hisilicon/Kconfig" diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile index 1e9ff4c..e7efcb7 100644 --- a/drivers/gpu/drm/Makefile +++ b/drivers/gpu/drm/Makefile @@ -75,3 +75,4 @@ obj-y += i2c/ obj-y += panel/ obj-y += bridge/ obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu/ +obj-$(CONFIG_DRM_HISI) += hisilicon/ diff --git a/drivers/gpu/drm/hisilicon/Kconfig b/drivers/gpu/drm/hisilicon/Kconfig new file mode 100644 index 0000000..70aa8d1 --- /dev/null +++ b/drivers/gpu/drm/hisilicon/Kconfig @@ -0,0 +1,9 @@ +config DRM_HISI + tristate "DRM Support for Hisilicon SoCs Platform" + depends on DRM + select DRM_KMS_HELPER + select DRM_GEM_CMA_HELPER + select DRM_KMS_CMA_HELPER + help + Choose this option if you have a hisilicon chipsets(hi6220). + If M is selected the module will be called hisi-drm. diff --git a/drivers/gpu/drm/hisilicon/Makefile b/drivers/gpu/drm/hisilicon/Makefile new file mode 100644 index 0000000..7375456 --- /dev/null +++ b/drivers/gpu/drm/hisilicon/Makefile @@ -0,0 +1,3 @@ +hisi-drm-y := hisi_drm_drv.o + +obj-$(CONFIG_DRM_HISI) += hisi-drm.o diff --git a/drivers/gpu/drm/hisilicon/hisi_drm_drv.c b/drivers/gpu/drm/hisilicon/hisi_drm_drv.c new file mode 100644 index 0000000..445e2ec --- /dev/null +++ b/drivers/gpu/drm/hisilicon/hisi_drm_drv.c @@ -0,0 +1,214 @@ +/* + * Hisilicon SoCs drm master driver + * + * Copyright (c) 2014-2015 Hisilicon Limited. + * Author: + * Xinliang Liu xinliang.liu@linaro.org + * Xinliang Liu z.liuxinliang@hisilicon.com + * Xinwei Kong kong.kongxinwei@hisilicon.com + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/of_platform.h> +#include <linux/component.h> + +#include <drm/drmP.h> +#include <drm/drm_gem_cma_helper.h> +#include <drm/drm_fb_cma_helper.h> +#include <drm/drm_atomic_helper.h> + +#define DRIVER_NAME "hisi-drm" + +static int hisi_drm_unload(struct drm_device *dev) +{ + drm_mode_config_cleanup(dev); + return 0; +} + +static const struct drm_mode_config_funcs hisi_drm_mode_config_funcs = { + .fb_create = drm_fb_cma_create, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, +}; + +static void hisi_drm_mode_config_init(struct drm_device *dev) +{ + dev->mode_config.min_width = 0; + dev->mode_config.min_height = 0; + + dev->mode_config.max_width = 2048; + dev->mode_config.max_height = 2048; + + dev->mode_config.funcs = &hisi_drm_mode_config_funcs; +} + +static int hisi_drm_load(struct drm_device *dev, unsigned long flags) +{ + int ret; + + dev_set_drvdata(dev->dev, dev); + + /* dev->mode_config initialization */ + drm_mode_config_init(dev); + hisi_drm_mode_config_init(dev); + + /* bind and init sub drivers */ + ret = component_bind_all(dev->dev, dev); + if (ret) { + DRM_ERROR("failed to bind all component.\n"); + goto err_mode_config_cleanup; + } + + /* reset all the states of crtc/plane/encoder/connector */ + drm_mode_config_reset(dev); + + return 0; + +err_mode_config_cleanup: + drm_mode_config_cleanup(dev); + + return ret; +} + +static const struct file_operations hisi_drm_fops = { + .owner = THIS_MODULE, + .open = drm_open, + .release = drm_release, + .unlocked_ioctl = drm_ioctl, +#ifdef CONFIG_COMPAT + .compat_ioctl = drm_compat_ioctl, +#endif + .poll = drm_poll, + .read = drm_read, + .llseek = no_llseek, + .mmap = drm_gem_cma_mmap, +}; + +static struct dma_buf *hisi_gem_prime_export(struct drm_device *dev, + struct drm_gem_object *obj, + int flags) +{ + /* we want to be able to write in mmapped buffer */ + flags |= O_RDWR; + return drm_gem_prime_export(dev, obj, flags); +} + +static int hisi_gem_cma_dumb_create(struct drm_file *file, + struct drm_device *dev, + struct drm_mode_create_dumb *args) +{ + int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); + + /* mali gpu need pitch 8 bytes alignment for 32bpp */ + args->pitch = roundup(min_pitch, 8); + + return drm_gem_cma_dumb_create_internal(file, dev, args); +} + +static struct drm_driver hisi_drm_driver = { + .driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | + DRIVER_ATOMIC, + .load = hisi_drm_load, + .unload = hisi_drm_unload, + .fops = &hisi_drm_fops, + .set_busid = drm_platform_set_busid, + + .gem_free_object = drm_gem_cma_free_object, + .gem_vm_ops = &drm_gem_cma_vm_ops, + .dumb_create = hisi_gem_cma_dumb_create, + .dumb_map_offset = drm_gem_cma_dumb_map_offset, + .dumb_destroy = drm_gem_dumb_destroy, + + .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .prime_fd_to_handle = drm_gem_prime_fd_to_handle, + .gem_prime_export = hisi_gem_prime_export, + .gem_prime_import = drm_gem_prime_import, + .gem_prime_get_sg_table = drm_gem_cma_prime_get_sg_table, + .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, + .gem_prime_vmap = drm_gem_cma_prime_vmap, + .gem_prime_vunmap = drm_gem_cma_prime_vunmap, + .gem_prime_mmap = drm_gem_cma_prime_mmap, + + .name = "hisi", + .desc = "Hisilicon SoCs' DRM Driver", + .date = "20150718", + .major = 1, + .minor = 0, +}; + +static int compare_of(struct device *dev, void *data) +{ + return dev->of_node == data; +} + +static int hisi_drm_bind(struct device *dev) +{ + dma_set_coherent_mask(dev, DMA_BIT_MASK(32)); + return drm_platform_init(&hisi_drm_driver, to_platform_device(dev)); +} + +static void hisi_drm_unbind(struct device *dev) +{ + drm_put_dev(dev_get_drvdata(dev)); +} + +static const struct component_master_ops hisi_drm_ops = { + .bind = hisi_drm_bind, + .unbind = hisi_drm_unbind, +}; + +static int hisi_drm_platform_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *node = dev->of_node; + struct device_node *child_np; + struct component_match *match = NULL; + + of_platform_populate(node, NULL, NULL, dev); + + child_np = of_get_next_available_child(node, NULL); + while (child_np) { + component_match_add(dev, &match, compare_of, child_np); + of_node_put(child_np); + child_np = of_get_next_available_child(node, child_np); + } + + return component_master_add_with_match(dev, &hisi_drm_ops, match); + + return 0; +} + +static int hisi_drm_platform_remove(struct platform_device *pdev) +{ + component_master_del(&pdev->dev, &hisi_drm_ops); + of_platform_depopulate(&pdev->dev); + return 0; +} + +static const struct of_device_id hisi_drm_dt_ids[] = { + { .compatible = "hisilicon,hi6220-dss", }, + { /* end node */ }, +}; +MODULE_DEVICE_TABLE(of, hisi_drm_dt_ids); + +static struct platform_driver hisi_drm_platform_driver = { + .probe = hisi_drm_platform_probe, + .remove = hisi_drm_platform_remove, + .driver = { + .owner = THIS_MODULE, + .name = DRIVER_NAME, + .of_match_table = hisi_drm_dt_ids, + }, +}; + +module_platform_driver(hisi_drm_platform_driver); + +MODULE_AUTHOR("Xinliang Liu xinliang.liu@linaro.org"); +MODULE_AUTHOR("Xinliang Liu z.liuxinliang@hisilicon.com"); +MODULE_AUTHOR("Xinwei Kong kong.kongxinwei@hisilicon.com"); +MODULE_DESCRIPTION("hisilicon SoCs' DRM master driver"); +MODULE_LICENSE("GPL v2");