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Commit 51dacf20 authored by Carlos Palminha's avatar Carlos Palminha Committed by Alexey Brodkin
Browse files

drm: Add support of ARC PGU display controller 



ARC PGU could be found on some development boards from Synopsys.
This is a simple byte streamer that reads data from a framebuffer
and sends data to the single encoder.

Signed-off-by: default avatarCarlos Palminha <palminha@synopsys.com>
Signed-off-by: default avatarAlexey Brodkin <abrodkin@synopsys.com>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-snps-arc@lists.infradead.org
parent 027b3f8b

drivers/gpu/drm/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -281,3 +281,5 @@ source "drivers/gpu/drm/imx/Kconfig" 
source "drivers/gpu/drm/vc4/Kconfig"



source "drivers/gpu/drm/etnaviv/Kconfig"



source "drivers/gpu/drm/arc/Kconfig"

drivers/gpu/drm/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -78,3 +78,4 @@ obj-y += panel/ 
obj-y			+= bridge/

obj-$(CONFIG_DRM_FSL_DCU) += fsl-dcu/

obj-$(CONFIG_DRM_ETNAVIV) += etnaviv/

obj-$(CONFIG_DRM_ARCPGU)+= arc/

drivers/gpu/drm/arc/Kconfig

0 → 100644
+10 −0
Original line number Diff line number Diff line 
config DRM_ARCPGU

	tristate "ARC PGU"

	depends on DRM && OF

	select DRM_KMS_CMA_HELPER

	select DRM_KMS_FB_HELPER

	select DRM_KMS_HELPER

	help

	  Choose this option if you have an ARC PGU controller.



	  If M is selected the module will be called arcpgu.

drivers/gpu/drm/arc/Makefile

0 → 100644
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arcpgu-y := arcpgu_crtc.o arcpgu_hdmi.o arcpgu_drv.o

obj-$(CONFIG_DRM_ARCPGU) += arcpgu.o

drivers/gpu/drm/arc/arcpgu.h

0 → 100644
+50 −0
Original line number Diff line number Diff line 
/*

 * ARC PGU DRM driver.

 *

 * Copyright (C) 2016 Synopsys, Inc. (www.synopsys.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.

 *

 * This program is distributed in the hope that 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.

 *

 */



#ifndef _ARCPGU_H_

#define _ARCPGU_H_



struct arcpgu_drm_private {

	void __iomem		*regs;

	struct clk		*clk;

	struct drm_fbdev_cma	*fbdev;

	struct drm_framebuffer	*fb;

	struct list_head	event_list;

	struct drm_crtc		crtc;

	struct drm_plane	*plane;

};



#define crtc_to_arcpgu_priv(x) container_of(x, struct arcpgu_drm_private, crtc)



static inline void arc_pgu_write(struct arcpgu_drm_private *arcpgu,

				 unsigned int reg, u32 value)

{

	iowrite32(value, arcpgu->regs + reg);

}



static inline u32 arc_pgu_read(struct arcpgu_drm_private *arcpgu,

			       unsigned int reg)

{

	return ioread32(arcpgu->regs + reg);

}



int arc_pgu_setup_crtc(struct drm_device *dev);

int arcpgu_drm_hdmi_init(struct drm_device *drm, struct device_node *np);

struct drm_fbdev_cma *arcpgu_fbdev_cma_init(struct drm_device *dev,

	unsigned int preferred_bpp, unsigned int num_crtc,

	unsigned int max_conn_count);



#endif