On Mon, Feb 11, 2019 at 10:11:10AM +0800, Hean-Loong, Ong wrote: > From: Ong, Hean Loong <hean.loong.ong@xxxxxxxxx> > > Signed-off-by: Ong, Hean Loong <hean.loong.ong@xxxxxxxxx> Per-patch changelog is missing here, would be good to include that to help reviewers. I've done a very quick scroll through, looks like a nice&clean driver. Acked-by: Daniel Vetter <daniel.vetter@xxxxxxxx> I think all we need is ack from the dt side. Rob Herring has commit rights to drm-misc, so he can push your driver once he's reviewed the dt side. Cheers, Daniel > --- > 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 > > _______________________________________________ > dri-devel mailing list > dri-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/dri-devel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch
