From: Ong, Hean Loong <hean.loong.ong@xxxxxxxxx> Signed-off-by: Ong, Hean Loong <hean.loong.ong@xxxxxxxxx> --- drivers/gpu/drm/ivip/Kconfig | 14 +++ drivers/gpu/drm/ivip/Makefile | 7 ++ drivers/gpu/drm/ivip/intel_vip_conn.c | 91 ++++++++++++++++ drivers/gpu/drm/ivip/intel_vip_core.c | 189 +++++++++++++++++++++++++++++++++ drivers/gpu/drm/ivip/intel_vip_drv.h | 73 +++++++++++++ drivers/gpu/drm/ivip/intel_vip_of.c | 181 +++++++++++++++++++++++++++++++ 6 files changed, 555 insertions(+), 0 deletions(-) create mode 100644 drivers/gpu/drm/ivip/Kconfig create mode 100644 drivers/gpu/drm/ivip/Makefile create mode 100644 drivers/gpu/drm/ivip/intel_vip_conn.c create mode 100644 drivers/gpu/drm/ivip/intel_vip_core.c create mode 100644 drivers/gpu/drm/ivip/intel_vip_drv.h create mode 100644 drivers/gpu/drm/ivip/intel_vip_of.c diff --git a/drivers/gpu/drm/ivip/Kconfig b/drivers/gpu/drm/ivip/Kconfig new file mode 100644 index 0000000..1d08b90 --- /dev/null +++ b/drivers/gpu/drm/ivip/Kconfig @@ -0,0 +1,14 @@ +config DRM_IVIP + tristate "Intel FGPA Video and Image Processing" + depends on DRM && OF + select DRM_GEM_CMA_HELPER + select DRM_KMS_HELPER + select DRM_KMS_FB_HELPER + select DRM_KMS_CMA_HELPER + help + Choose this option if you have an Intel FPGA Arria 10 system + and above with an Intel Display Port IP. This does not support + legacy Intel FPGA Cyclone V display port. Currently only single + frame buffer is supported. Note that ACPI and X_86 architecture + is not supported for Arria10. If M is selected the module will be + called ivip. diff --git a/drivers/gpu/drm/ivip/Makefile b/drivers/gpu/drm/ivip/Makefile new file mode 100644 index 0000000..3fd2e75 --- /dev/null +++ b/drivers/gpu/drm/ivip/Makefile @@ -0,0 +1,7 @@ +# +# Makefile for the drm device driver. This driver provides support for the +# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and higher. + +obj-$(CONFIG_DRM_IVIP) += ivip.o +ivip-objs := intel_vip_of.o intel_vip_core.o \ + intel_vip_conn.o diff --git a/drivers/gpu/drm/ivip/intel_vip_conn.c b/drivers/gpu/drm/ivip/intel_vip_conn.c new file mode 100644 index 0000000..93ce0b3 --- /dev/null +++ b/drivers/gpu/drm/ivip/intel_vip_conn.c @@ -0,0 +1,91 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Intel Corporation. + * + * intel_vip_conn.c -- Intel Video and Image Processing(VIP) + * Frame Buffer II driver + * + * This driver supports the Intel VIP Frame Reader component. + * More info on the hardware can be found in the Intel Video + * and Image Processing Suite User Guide at this address + * http://www.altera.com/literature/ug/ug_vip.pdf. + * + * Authors: + * Walter Goossens <waltergoossens@xxxxxxx> + * Thomas Chou <thomas@xxxxxxxxxxxxx> + * Chris Rauer <crauer@xxxxxxxxxx> + * Ong, Hean-Loong <hean.loong.ong@xxxxxxxxx> + * + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_encoder_slave.h> +#include <drm/drm_plane_helper.h> + +static enum drm_connector_status +intelvipfb_drm_connector_detect(struct drm_connector *connector, bool force) +{ + return connector_status_connected; +} + +static void intelvipfb_drm_connector_destroy(struct drm_connector *connector) +{ + drm_connector_unregister(connector); + drm_connector_cleanup(connector); +} + +static const struct drm_connector_funcs intelvipfb_drm_connector_funcs = { + .detect = intelvipfb_drm_connector_detect, + .reset = drm_atomic_helper_connector_reset, + .fill_modes = drm_helper_probe_single_connector_modes, + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, + .destroy = intelvipfb_drm_connector_destroy, +}; + +static int intelvipfb_drm_connector_get_modes(struct drm_connector *connector) +{ + struct drm_device *drm = connector->dev; + int count; + + count = drm_add_modes_noedid(connector, drm->mode_config.max_width, + drm->mode_config.max_height); + drm_set_preferred_mode(connector, drm->mode_config.max_width, + drm->mode_config.max_height); + return count; +} + +static const struct drm_connector_helper_funcs +intelvipfb_drm_connector_helper_funcs = { + .get_modes = intelvipfb_drm_connector_get_modes, +}; + +struct drm_connector * +intelvipfb_conn_setup(struct drm_device *drm) +{ + struct drm_connector *conn; + int ret; + + conn = devm_kzalloc(drm->dev, sizeof(*conn), GFP_KERNEL); + if (IS_ERR(conn)) + return NULL; + + drm_connector_helper_add(conn, &intelvipfb_drm_connector_helper_funcs); + ret = drm_connector_init(drm, conn, &intelvipfb_drm_connector_funcs, + DRM_MODE_CONNECTOR_DisplayPort); + if (ret < 0) { + dev_err(drm->dev, "failed to initialize drm connector\n"); + ret = -ENOMEM; + goto error_connector_cleanup; + } + + return conn; + +error_connector_cleanup: + drm_connector_cleanup(conn); + + return NULL; +} diff --git a/drivers/gpu/drm/ivip/intel_vip_core.c b/drivers/gpu/drm/ivip/intel_vip_core.c new file mode 100644 index 0000000..980f0f3 --- /dev/null +++ b/drivers/gpu/drm/ivip/intel_vip_core.c @@ -0,0 +1,189 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Intel Corporation. + * + * intel_vip_core.c -- Intel Video and Image Processing(VIP) + * Frame Buffer II driver + * + * This driver supports the Intel VIP Frame Reader component. + * More info on the hardware can be found in the Intel Video + * and Image Processing Suite User Guide at this address + * http://www.altera.com/literature/ug/ug_vip.pdf. + * + * Authors: + * Walter Goossens <waltergoossens@xxxxxxx> + * Thomas Chou <thomas@xxxxxxxxxxxxx> + * Chris Rauer <crauer@xxxxxxxxxx> + * Ong, Hean-Loong <hean.loong.ong@xxxxxxxxx> + * + */ + +#include <drm/drmP.h> +#include <drm/drm_atomic.h> +#include <drm/drm_atomic_helper.h> +#include <drm/drm_crtc_helper.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_fb_cma_helper.h> +#include <drm/drm_gem_cma_helper.h> +#include <drm/drm_plane_helper.h> +#include <drm/drm_simple_kms_helper.h> +#include <drm/drm_gem_framebuffer_helper.h> + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> + +#include "intel_vip_drv.h" + +static inline struct intelvipfb_priv * +pipe_to_intelvipdrm(struct drm_simple_display_pipe *pipe) +{ + return container_of(pipe, struct intelvipfb_priv, pipe); +} + +static void intelvipfb_enable(struct drm_simple_display_pipe *pipe, + struct drm_crtc_state *crtc_state, struct drm_plane_state * + plane_state) +{ + /* + * The frameinfo variable has to correspond to the size of the VIP Suite + * Frame Reader register 7 which will determine the maximum size used + * in this frameinfo + */ + + u32 frameinfo; + struct intelvipfb_priv *priv = pipe->plane.dev->dev_private; + void __iomem *base = priv->base; + struct drm_plane_state *state = pipe->plane.state; + dma_addr_t addr; + + addr = drm_fb_cma_get_gem_addr(state->fb, state, 0); + + frameinfo = + readl(base + INTELVIPFB_FRAME_READER) & 0x00ffffff; + writel(frameinfo, base + INTELVIPFB_FRAME_INFO); + writel(addr, base + INTELVIPFB_FRAME_START); + /* Finally set the control register to 1 to start streaming */ + writel(1, base + INTELVIPFB_CONTROL); +} + +static void intelvipfb_disable(struct drm_simple_display_pipe *pipe) +{ + struct intelvipfb_priv *priv = pipe->plane.dev->dev_private; + void __iomem *base = priv->base; + /* set the control register to 0 to stop streaming */ + writel(0, base + INTELVIPFB_CONTROL); +} + + +static const struct drm_mode_config_funcs intelvipfb_mode_config_funcs = { + .fb_create = drm_gem_fb_create, + .atomic_check = drm_atomic_helper_check, + .atomic_commit = drm_atomic_helper_commit, +}; + + +static void intelvipfb_setup_mode_config(struct drm_device *drm) +{ + drm_mode_config_init(drm); + drm->mode_config.funcs = &intelvipfb_mode_config_funcs; +} + +void intelvipfb_display_pipe_update(struct drm_simple_display_pipe *pipe, + struct drm_plane_state *old_state) +{ + struct intelvipfb_priv *fbpriv = pipe_to_intelvipdrm(pipe); + struct drm_framebuffer *fb = pipe->plane.state->fb; + struct drm_crtc *crtc = &fbpriv->pipe.crtc; + + if (fb && (fb != old_state->fb)) { + if (fbpriv->fb_dirty) + fbpriv->fb_dirty(fb, NULL, 0, 0, NULL, 0); + } + + if (crtc->state->event) { + spin_lock_irq(&crtc->dev->event_lock); + drm_crtc_send_vblank_event(crtc, crtc->state->event); + spin_unlock_irq(&crtc->dev->event_lock); + crtc->state->event = NULL; + } +} +EXPORT_SYMBOL(intelvipfb_display_pipe_update); + +static struct drm_simple_display_pipe_funcs fbpriv_funcs = { + .prepare_fb = drm_gem_fb_simple_display_pipe_prepare_fb, + .update = intelvipfb_display_pipe_update, + .enable = intelvipfb_enable, + .disable = intelvipfb_disable, +}; + + +int intelvipfb_probe(struct device *dev) +{ + int retval; + struct drm_device *drm; + struct intelvipfb_priv *fbpriv = dev_get_drvdata(dev); + + struct drm_connector *connector; + u32 formats[] = {DRM_FORMAT_XRGB8888}; + + drm = fbpriv->drm; + + drm->dev_private = fbpriv; + + intelvipfb_setup_mode_config(drm); + + connector = intelvipfb_conn_setup(drm); + if (!connector) { + dev_err(drm->dev, "Connector setup failed\n"); + goto err_mode_config; + } + + retval = drm_simple_display_pipe_init(drm, + &fbpriv->pipe, + &fbpriv_funcs, + formats, + ARRAY_SIZE(formats), + NULL, connector); + + if (retval < 0) { + dev_err(drm->dev, "Cannot setup simple display pipe\n"); + goto err_mode_config; + } + + drm_mode_config_reset(drm); + + drm_dev_register(drm, 0); + + drm_fbdev_generic_setup(drm, 32); + + dev_info(drm->dev, "ivip: Successfully created fb\n"); + + return retval; + +err_mode_config: + + drm_mode_config_cleanup(drm); + return -ENODEV; +} + +int intelvipfb_remove(struct device *dev) +{ + struct intelvipfb_priv *fbpriv = dev_get_drvdata(dev); + struct drm_device *drm = fbpriv->drm; + + drm_dev_unregister(drm); + + drm_mode_config_cleanup(drm); + + return 0; +} + +/* Original author of Altera Frame Buffer*/ +MODULE_AUTHOR("Walter Goossens <waltergoossens@xxxxxxx>"); +MODULE_AUTHOR("Thomas Chou <thomas@xxxxxxxxxxxxx>"); +MODULE_AUTHOR("Chris Rauer <crauer@xxxxxxxxxx>"); +/* Author of Intel FPGA Frame Buffer II*/ +MODULE_AUTHOR("Ong, Hean-Loong <hean.loong.ong@xxxxxxxxx>"); +MODULE_DESCRIPTION("Intel VIP Frame Buffer II driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/ivip/intel_vip_drv.h b/drivers/gpu/drm/ivip/intel_vip_drv.h new file mode 100644 index 0000000..c038f29 --- /dev/null +++ b/drivers/gpu/drm/ivip/intel_vip_drv.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2019 Intel Corporation. + * + * Intel Video and Image Processing(VIP) Frame Buffer II driver. + * Frame Buffer II driver + * + * This driver supports the Intel VIP Frame Reader component. + * More info on the hardware can be found in the Intel Video + * and Image Processing Suite User Guide at this address + * http://www.altera.com/literature/ug/ug_vip.pdf. + * + * Authors: + * Walter Goossens <waltergoossens@xxxxxxx> + * Thomas Chou <thomas@xxxxxxxxxxxxx> + * Chris Rauer <crauer@xxxxxxxxxx> + * Ong, Hean-Loong <hean.loong.ong@xxxxxxxxx> + * + */ +#ifndef _INTEL_VIP_DRV_H +#define _INTEL_VIP_DRV_H + +#define DRIVER_NAME "intelvipfb" +#define BYTES_PER_PIXEL 4 +#define CRTC_NUM 1 +#define CONN_NUM 1 + +/* control registers */ +#define INTELVIPFB_CONTROL 0 +#define INTELVIPFB_STATUS 0x4 +#define INTELVIPFB_INTERRUPT 0x8 +#define INTELVIPFB_FRAME_COUNTER 0xC +#define INTELVIPFB_FRAME_DROP 0x10 +#define INTELVIPFB_FRAME_INFO 0x14 +#define INTELVIPFB_FRAME_START 0x18 +#define INTELVIPFB_FRAME_READER 0x1C + +int intelvipfb_probe(struct device *dev); +int intelvipfb_remove(struct device *dev); +int intelvipfb_setup_crtc(struct drm_device *drm); +struct drm_connector *intelvipfb_conn_setup(struct drm_device *drm); + +struct intelvipfb_priv { + /** + * @pipe: Display pipe structure + */ + struct drm_simple_display_pipe pipe; + + /** + * @drm: DRM device + */ + struct drm_device *drm; + + /** + * @dirty_lock: Serializes framebuffer flushing + */ + struct mutex dirty_lock; + + /** + * @base: Base memory for the framebuffer + */ + void __iomem *base; + + /** + * @fb_dirty: Framebuffer dirty callback + */ + int (*fb_dirty)(struct drm_framebuffer *framebuffer, + struct drm_file *file_priv, unsigned int flags, + unsigned int color, struct drm_clip_rect *clips, + unsigned int num_clips); +}; + +#endif diff --git a/drivers/gpu/drm/ivip/intel_vip_of.c b/drivers/gpu/drm/ivip/intel_vip_of.c new file mode 100644 index 0000000..c899e30 --- /dev/null +++ b/drivers/gpu/drm/ivip/intel_vip_of.c @@ -0,0 +1,181 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2019 Intel Corporation. + * + * intel_vip_of.c -- Intel Video and Image Processing(VIP) + * Frame Buffer II driver + * + * This driver supports the Intel VIP Frame Reader component. + * More info on the hardware can be found in the Intel Video + * and Image Processing Suite User Guide at this address + * http://www.altera.com/literature/ug/ug_vip.pdf. + * + * Authors: + * Ong, Hean-Loong <hean.loong.ong@xxxxxxxxx> + * + */ +#include <drm/drmP.h> +#include <drm/drm_drv.h> +#include <drm/drm_fb_helper.h> +#include <drm/drm_fb_cma_helper.h> +#include <drm/drm_gem_cma_helper.h> +#include <drm/drm_of.h> +#include <drm/drm_simple_kms_helper.h> + +#include <linux/component.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> + +#include "intel_vip_drv.h" + +DEFINE_DRM_GEM_CMA_FOPS(drm_fops); + +static struct drm_driver intelvipfb_drm = { + .driver_features = + DRIVER_MODESET | DRIVER_GEM | + DRIVER_PRIME | DRIVER_ATOMIC, + .gem_free_object_unlocked = drm_gem_cma_free_object, + .gem_vm_ops = &drm_gem_cma_vm_ops, + .dumb_create = drm_gem_cma_dumb_create, + .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 = drm_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 = DRIVER_NAME, + .date = "20190129", + .desc = "Intel FPGA VIP SUITE", + .major = 1, + .minor = 0, + .ioctls = NULL, + .patchlevel = 0, + .fops = &drm_fops, +}; + +/* + * Setting up information derived from OF Device Tree Nodes + * max-width, max-height, bits per pixel, memory port width + */ + +static int intelvipfb_drm_setup(struct device *dev, + struct intelvipfb_priv *fbpriv) +{ + struct drm_device *drm = fbpriv->drm; + struct device_node *np = dev->of_node; + int mem_word_width; + int max_h, max_w; + int ret; + + ret = of_property_read_u32(np, "altr,max-width", &max_w); + if (ret) { + dev_err(dev, + "Missing required parameter 'altr,max-width'"); + return ret; + } + + ret = of_property_read_u32(np, "altr,max-height", &max_h); + if (ret) { + dev_err(dev, + "Missing required parameter 'altr,max-height'"); + return ret; + } + + ret = of_property_read_u32(np, "altr,mem-port-width", &mem_word_width); + if (ret) { + dev_err(dev, "Missing required parameter 'altr,mem-port-width '"); + return ret; + } + + if (!(mem_word_width >= 32 && mem_word_width % 32 == 0)) { + dev_err(dev, + "mem-word-width is set to %i. must be >= 32 and multiple of 32.", + mem_word_width); + return -ENODEV; + } + + drm->mode_config.min_width = 640; + drm->mode_config.min_height = 480; + drm->mode_config.max_width = max_w; + drm->mode_config.max_height = max_h; + drm->mode_config.preferred_depth = 32; + + return 0; +} + +static int intelvipfb_of_probe(struct platform_device *pdev) +{ + int retval; + struct resource *reg_res; + struct intelvipfb_priv *fbpriv; + struct device *dev = &pdev->dev; + struct drm_device *drm; + + fbpriv = devm_kzalloc(dev, sizeof(*fbpriv), GFP_KERNEL); + if (!fbpriv) + return -ENOMEM; + + /*setup DRM */ + drm = drm_dev_alloc(&intelvipfb_drm, dev); + if (IS_ERR(drm)) + return PTR_ERR(drm); + + retval = dma_set_mask_and_coherent(drm->dev, DMA_BIT_MASK(32)); + if (retval) + return -ENODEV; + + fbpriv->drm = drm; + + reg_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!reg_res) + return -ENOMEM; + + fbpriv->base = devm_ioremap_resource(dev, reg_res); + + if (IS_ERR(fbpriv->base)) { + dev_err(dev, "devm_ioremap_resource failed\n"); + retval = PTR_ERR(fbpriv->base); + return -ENOMEM; + } + + intelvipfb_drm_setup(dev, fbpriv); + + dev_set_drvdata(dev, fbpriv); + + return intelvipfb_probe(dev); +} + +static int intelvipfb_of_remove(struct platform_device *pdev) +{ + return intelvipfb_remove(&pdev->dev); +} + +/* + * The name vip-frame-buffer-2.0 is derived from + * http://www.altera.com/literature/ug/ug_vip.pdf + * frame buffer IP cores section 14 + */ + +static const struct of_device_id intelvipfb_of_match[] = { + { .compatible = "altr,vip-frame-buffer-2.0" }, + {}, +}; + +MODULE_DEVICE_TABLE(of, intelvipfb_of_match); + +static struct platform_driver intelvipfb_driver = { + .probe = intelvipfb_of_probe, + .remove = intelvipfb_of_remove, + .driver = { + .name = DRIVER_NAME, + .of_match_table = intelvipfb_of_match, + }, +}; + +module_platform_driver(intelvipfb_driver); -- 1.7.1
