kernel/drivers/staging/imgtec/tc/drm_pdp_drv.h

/* -*- mode: c; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* vi: set ts=8 sw=8 sts=8: */
/*************************************************************************/ /*!
@File
@Codingstyle    LinuxKernel
@Copyright      Copyright (c) Imagination Technologies Ltd. All Rights Reserved
@License        MIT

The contents of this file are subject to the MIT license as set out below.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

This License is also included in this distribution in the file called
"MIT-COPYING".

EXCEPT AS OTHERWISE STATED IN A NEGOTIATED AGREEMENT: (A) THE SOFTWARE IS
PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
PURPOSE AND NONINFRINGEMENT; AND (B) IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/ /**************************************************************************/

#if !defined(__DRM_PDP_DRV_H__)
#define __DRM_PDP_DRV_H__

#include <linux/version.h>
#include <linux/wait.h>

#include <drm/drmP.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_mm.h>

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 9, 0))
#include <drm/drm_plane.h>
#endif

#include "pdp_common.h"

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 14, 0)) && \
	!defined(PVR_ANDROID_USE_PDP_LEGACY)
#define PDP_USE_ATOMIC
#endif

struct pdp_gem_context;
enum pdp_crtc_flip_status;
struct pdp_flip_data;
struct pdp_gem_private;

#if !defined(SUPPORT_PLATO_DISPLAY)
struct tc_pdp_platform_data;
#else
struct plato_pdp_platform_data;
#endif

struct pdp_drm_private {
	struct drm_device *dev;

	enum pdp_version version;

	/* created by pdp_gem_init */
	struct pdp_gem_private	*gem_priv;

	/* initialised by pdp_modeset_early_init */
	struct drm_plane *plane;
	struct drm_crtc *crtc;
	struct drm_connector *connector;
	struct drm_encoder *encoder;

	bool display_enabled;
};

struct pdp_crtc {
	struct drm_crtc base;

	uint32_t number;

	resource_size_t pdp_reg_size;
	resource_size_t pdp_reg_phys_base;
	void __iomem *pdp_reg;

	resource_size_t pdp_bif_reg_size;
	resource_size_t pdp_bif_reg_phys_base;
	void __iomem *pdp_bif_reg;

	resource_size_t pll_reg_size;
	resource_size_t pll_reg_phys_base;
	void __iomem *pll_reg;

	resource_size_t odn_core_size; /* needed for odin pdp clk reset */
	resource_size_t odn_core_phys_base;
	void __iomem *odn_core_reg;

	wait_queue_head_t flip_pending_wait_queue;

	/* Reuse the drm_device event_lock to protect these */
	atomic_t flip_status;
	struct drm_pending_vblank_event *flip_event;
	struct drm_framebuffer *old_fb;
	struct pdp_flip_data *flip_data;
	bool flip_async;
};

#define to_pdp_crtc(crtc) container_of(crtc, struct pdp_crtc, base)

#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 14, 0))
struct pdp_framebuffer {
	struct drm_framebuffer base;
	struct drm_gem_object *obj[1];
};

#define to_pdp_framebuffer(fb) container_of(fb, struct pdp_framebuffer, base)
#else
#define pdp_framebuffer drm_framebuffer
#define to_pdp_framebuffer(fb) (fb)
#endif

static inline u32 pdp_drm_fb_cpp(struct drm_framebuffer *fb)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0))
	return fb->format->cpp[0];
#else
	return fb->bits_per_pixel / 8;
#endif
}

static inline u32 pdp_drm_fb_format(struct drm_framebuffer *fb)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 11, 0))
	return fb->format->format;
#else
	return fb->pixel_format;
#endif
}

int pdp_debugfs_init(struct drm_minor *minor);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 12, 0))
void pdp_debugfs_cleanup(struct drm_minor *minor);
#endif

struct drm_plane *pdp_plane_create(struct drm_device *dev,
				   enum drm_plane_type type);
void pdp_plane_set_surface(struct drm_crtc *crtc, struct drm_plane *plane,
			   struct drm_framebuffer *fb,
			   const uint32_t src_x, const uint32_t src_y);

struct drm_crtc *pdp_crtc_create(struct drm_device *dev, uint32_t number,
				 struct drm_plane *primary_plane);
void pdp_crtc_set_plane_enabled(struct drm_crtc *crtc, bool enable);
void pdp_crtc_set_vblank_enabled(struct drm_crtc *crtc, bool enable);
void pdp_crtc_irq_handler(struct drm_crtc *crtc);

#if (LINUX_VERSION_CODE < KERNEL_VERSION(4, 6, 0))
void pdp_crtc_flip_event_cancel(struct drm_crtc *crtc, struct drm_file *file);
#endif

struct drm_connector *pdp_dvi_connector_create(struct drm_device *dev);

struct drm_encoder *pdp_tmds_encoder_create(struct drm_device *dev);

int pdp_modeset_early_init(struct pdp_drm_private *dev_priv);
int pdp_modeset_late_init(struct pdp_drm_private *dev_priv);
void pdp_modeset_early_cleanup(struct pdp_drm_private *dev_priv);
void pdp_modeset_late_cleanup(struct pdp_drm_private *dev_priv);

#endif /* !defined(__DRM_PDP_DRV_H__) */