Hi Hean-Loong, Ong Patch looks good to me, but there is a few trivial things I spotted while browsing the code. See below. Sam > +++ 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 You could use: ivip-y := intel_vip_of.o intel_vip_core.o ivip-y += intel_vip_conn.o Using "ivip-y" is the recommend syntax today. And using "+=" you get rid of the ugly "\" to continue a line. (Some people prefer "\" in makefiles, but there are not needed) > +++ 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> Please do not use drmP.h in new drivers, we try to get rid of this file. > +#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> Sort the list of include files. (Looks like this was properly done before, and only one file is out of palce) > +static void intelvipfb_enable(struct drm_simple_display_pipe *pipe, > + struct drm_crtc_state *crtc_state, struct drm_plane_state * > + plane_state) Fix indent. The parameters on second line and following should be aligned below the opening paranthesis. Use tab(s) + spaces to align properly. > +void intelvipfb_display_pipe_update(struct drm_simple_display_pipe *pipe, > + struct drm_plane_state *old_state) Align parameter > +} > +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; It would be simpler to just pass fbpriv as a parameter. There is only one user of intelvipfb_probe() so no need to avoid it. Also it would be more logical to set drm = fbpriv->drm; where memory are allocated. > + > + 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); Consider indent, where subsequent parameters are aligned right after the opening '('. > + > + 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; > +} > + > 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 The need for this file confuses me. It does not include only "of" related stuff, but also generic device driver stuff. Maybe merge with intel_vip_core.c? And rename that file to intel_vip_drv.c? > + * > + * 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> Drop use of drmP.h > +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 */ Space before "setup" > + > +static const struct of_device_id intelvipfb_of_match[] = { > + { .compatible = "altr,vip-frame-buffer-2.0" }, > + {}, Maybe add "/* sentinel */" comment?
