On Wed, 2018-08-15 at 14:26 +0200, Noralf Trønnes wrote: > Den 14.08.2018 10.57, skrev Hean-Loong, Ong: > > > > From: Ong Hean Loong <hean.loong.ong@xxxxxxxxx> > > > > Driver for Intel FPGA Video and Image Processing Suite Frame Buffer > > II. > > The driver only supports the Intel Arria10 devkit and its variants. > > This driver can be either loaded staticlly or in modules. > > The OF device tree binding is located at: > > Documentation/devicetree/bindings/display/altr,vip-fb2.txt > > > > Signed-off-by: Ong Hean Loong <hean.loong.ong@xxxxxxxxx> > > --- > > drivers/gpu/drm/Kconfig | 2 + > > drivers/gpu/drm/Makefile | 1 + > > drivers/gpu/drm/ivip/Kconfig | 14 +++ > > drivers/gpu/drm/ivip/Makefile | 9 ++ > > drivers/gpu/drm/ivip/intel_vip_conn.c | 95 ++++++++++++++++ > > drivers/gpu/drm/ivip/intel_vip_core.c | 161 > > +++++++++++++++++++++++++++ > > drivers/gpu/drm/ivip/intel_vip_drv.h | 52 +++++++++ > > drivers/gpu/drm/ivip/intel_vip_of.c | 193 > > +++++++++++++++++++++++++++++++++ > > 8 files changed, 527 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/Kconfig b/drivers/gpu/drm/Kconfig > > index cb88528..6b2845b 100644 > > --- a/drivers/gpu/drm/Kconfig > > +++ b/drivers/gpu/drm/Kconfig > > @@ -215,6 +215,8 @@ source "drivers/gpu/drm/nouveau/Kconfig" > > > > source "drivers/gpu/drm/i915/Kconfig" > > > > +source "drivers/gpu/drm/ivip/Kconfig" > > + > > config DRM_VGEM > > tristate "Virtual GEM provider" > > depends on DRM > > diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile > > index a6771ce..57205d8 100644 > > --- a/drivers/gpu/drm/Makefile > > +++ b/drivers/gpu/drm/Makefile > > @@ -61,6 +61,7 @@ obj-$(CONFIG_DRM_AMDGPU)+= amd/amdgpu/ > > obj-$(CONFIG_DRM_MGA) += mga/ > > obj-$(CONFIG_DRM_I810) += i810/ > > obj-$(CONFIG_DRM_I915) += i915/ > > +obj-$(CONFIG_DRM_IVIP) += ivip/ > > obj-$(CONFIG_DRM_MGAG200) += mgag200/ > > obj-$(CONFIG_DRM_V3D) += v3d/ > > obj-$(CONFIG_DRM_VC4) += vc4/ > > 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..cc55b04 > > --- /dev/null > > +++ b/drivers/gpu/drm/ivip/Makefile > > @@ -0,0 +1,9 @@ > > +# > > +# Makefile for the drm device driver. This driver provides > > support for the > > +# Direct Rendering Infrastructure (DRI) in XFree86 4.1.0 and > > higher. > > + > > +ccflags-y := -Iinclude/drm > This shouldn't be necessary AFAIK. > > > > > + > > +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..46bb04c > > --- /dev/null > > +++ b/drivers/gpu/drm/ivip/intel_vip_conn.c > > @@ -0,0 +1,95 @@ > Please add an SPDX indentifier at the top of your files and you can > drop > the license text. > > Header files use this: > /* SPDX-License-Identifier: GPL-2.0 */ > > C-files uses c++ comment due to reasons: > // SPDX-License-Identifier: GPL-2.0 > > > > > +/* > > + * 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. > > + * > > + * This program is free software; you can redistribute it and/or > > modify it > > + * under the terms and conditions of the GNU General Public > > License, > > + * version 2, as published by the Free Software Foundation. > > + * > > + * This program is distributed in the hope it will be useful, but > > WITHOUT > > + * ANY WARRANTY; without even the implied warranty of > > MERCHANTABILITY or > > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public > > License for > > + * more details. > > + * > > + * Authors: > > + * 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 = { > > + .reset = drm_atomic_helper_connector_reset, > > + .detect = intelvipfb_drm_connector_detect, > > + .fill_modes = drm_helper_probe_single_connector_modes, > > + .destroy = intelvipfb_drm_connector_destroy, > > + .atomic_destroy_state = > > drm_atomic_helper_connector_destroy_state, > > +}; > > + > > +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; > > + > > + 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; > > + } > > + > > + conn->polled = 0; > No need to set this, it is already zero from the allocation. > > > > > + drm_connector_helper_add(conn, > > &intelvipfb_drm_connector_helper_funcs); > > + > > + 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..b601bb4 > > --- /dev/null > > +++ b/drivers/gpu/drm/ivip/intel_vip_core.c > > @@ -0,0 +1,160 @@ > > +/* > > + * 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. > > + * > > + * This program is free software; you can redistribute it and/or > > modify it > > + * under the terms and conditions of the GNU General Public > > License, > > + * version 2, as published by the Free Software Foundation. > > + * > > + * This program is distributed in the hope it will be useful, but > > WITHOUT > > + * ANY WARRANTY; without even the implied warranty of > > MERCHANTABILITY or > > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public > > License for > > + * more details. > > + * > > + * Authors: > > + * 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 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; > > +} > > + > > +static int intelvipfb_pipe_prepare_fb(struct > > drm_simple_display_pipe *pipe, > > + struct drm_plane_state > > *plane_state) > > +{ > > + return drm_gem_fb_prepare_fb(&pipe->plane, plane_state); > > +} > > + > > +static struct drm_simple_display_pipe_funcs fbpriv_funcs = { > > + .prepare_fb = intelvipfb_pipe_prepare_fb, > You can use drm_gem_fb_simple_display_pipe_prepare_fb(), no need to > roll > your own. > > > > > + .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; > > + } > > + > > + fbpriv->fbcma = drm_fbdev_cma_init(drm, > > + drm->mode_config.preferred_depth, > > + drm->mode_config.num_connector); > Please use drm_fbdev_generic_setup() for fbdev emulation. It tears > down > automatically on drm_dev_unregister() and you don't need the > drm_driver->lastclose hook. > > All drivers that use drm_fbdev_cma_init() will move to this shortly. > > Noralf. > I could not find any examples that currently uses the drm_fbdev_generic_setup (). Would you mind pointing me on where such examples are available that would allow me to replace the assignment of the fbcma pointer with drm_fbdev_generic_setup() method Thanks. Hean Loong. > > > > + > > + drm_mode_config_reset(drm); > > + > > + drm_dev_register(drm, 0); > > + > > + 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); > > + > > + if (fbpriv->fbcma) > > + drm_fbdev_cma_fini(fbpriv->fbcma); > > + > > + drm_mode_config_cleanup(drm); > > + drm_dev_unref(drm); > > + > > + return 0; > > +} > > + > > +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..0a3555d > > --- /dev/null > > +++ b/drivers/gpu/drm/ivip/intel_vip_drv.h > > @@ -0,0 +1,52 @@ > > +/* > > + * Copyright (C) 2017 Intel Corporation. > > + * > > + * Intel Video and Image Processing(VIP) Frame Buffer II driver. > > + * > > + * This program is free software; you can redistribute it and/or > > modify it > > + * under the terms and conditions of the GNU General Public > > License, > > + * version 2, as published by the Free Software Foundation. > > + * > > + * This program is distributed in the hope it will be useful, but > > WITHOUT > > + * ANY WARRANTY; without even the implied warranty of > > MERCHANTABILITY or > > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public > > License for > > + * more details. > > + * > > + * You should have received a copy of the GNU General Public > > License along with > > + * this program. If not, see <http://www.gnu.org/licenses/>. > > + * > > + * Authors: > > + * 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 { > > + struct drm_simple_display_pipe pipe; > > + struct drm_fbdev_cma *fbcma; > > + struct drm_device *drm; > > + void __iomem *base; > > +}; > > + > > +#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..47302f9 > > --- /dev/null > > +++ b/drivers/gpu/drm/ivip/intel_vip_of.c > > @@ -0,0 +1,193 @@ > > +/* > > + * 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. > > + * > > + * This program is free software; you can redistribute it and/or > > modify it > > + * under the terms and conditions of the GNU General Public > > License, > > + * version 2, as published by the Free Software Foundation. > > + * > > + * This program is distributed in the hope it will be useful, but > > WITHOUT > > + * ANY WARRANTY; without even the implied warranty of > > MERCHANTABILITY or > > + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public > > License for > > + * more details. > > + * > > + * Authors: > > + * Ong, Hean-Loong <hean.loong.ong@xxxxxxxxx> > > + * > > + */ > > +#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 void intelvipfb_lastclose(struct drm_device *drm) > > +{ > > + struct intelvipfb_priv *priv = drm->dev_private; > > + > > + drm_fbdev_cma_restore_mode(priv->fbcma); > > +} > > + > > +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, > > + .lastclose = intelvipfb_lastclose, > > + .name = DRIVER_NAME, > > + .date = "20170729", > > + .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);
