forked from Minki/linux
6d62ef3ac3
On R-Car Gen3 SoCs the DU lost its ability to access memory directly and needs to work in conjunction with the VSP to do so. This commit handles the VSP internally to hide it from the user. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
130 lines
3.5 KiB
C
130 lines
3.5 KiB
C
/*
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* rcar_du_drv.h -- R-Car Display Unit DRM driver
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*
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* Copyright (C) 2013-2014 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __RCAR_DU_DRV_H__
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#define __RCAR_DU_DRV_H__
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#include <linux/kernel.h>
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#include <linux/wait.h>
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#include "rcar_du_crtc.h"
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#include "rcar_du_group.h"
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#include "rcar_du_vsp.h"
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struct clk;
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struct device;
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struct drm_device;
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struct drm_fbdev_cma;
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struct rcar_du_device;
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struct rcar_du_lvdsenc;
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#define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK (1 << 0) /* Per-CRTC IRQ and clock */
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#define RCAR_DU_FEATURE_EXT_CTRL_REGS (1 << 1) /* Has extended control registers */
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#define RCAR_DU_FEATURE_VSP1_SOURCE (1 << 2) /* Has inputs from VSP1 */
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#define RCAR_DU_QUIRK_ALIGN_128B (1 << 0) /* Align pitches to 128 bytes */
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#define RCAR_DU_QUIRK_LVDS_LANES (1 << 1) /* LVDS lanes 1 and 3 inverted */
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/*
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* struct rcar_du_output_routing - Output routing specification
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* @possible_crtcs: bitmask of possible CRTCs for the output
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* @encoder_type: DRM type of the internal encoder associated with the output
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* @port: device tree port number corresponding to this output route
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*
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* The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
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* specify the valid SoC outputs, which CRTCs can drive the output, and the type
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* of in-SoC encoder for the output.
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*/
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struct rcar_du_output_routing {
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unsigned int possible_crtcs;
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unsigned int encoder_type;
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unsigned int port;
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};
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/*
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* struct rcar_du_device_info - DU model-specific information
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* @features: device features (RCAR_DU_FEATURE_*)
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* @quirks: device quirks (RCAR_DU_QUIRK_*)
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* @num_crtcs: total number of CRTCs
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* @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
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* @num_lvds: number of internal LVDS encoders
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*/
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struct rcar_du_device_info {
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unsigned int features;
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unsigned int quirks;
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unsigned int num_crtcs;
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struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
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unsigned int num_lvds;
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};
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#define RCAR_DU_MAX_CRTCS 3
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#define RCAR_DU_MAX_GROUPS DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
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#define RCAR_DU_MAX_LVDS 2
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#define RCAR_DU_MAX_VSPS 4
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struct rcar_du_device {
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struct device *dev;
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const struct rcar_du_device_info *info;
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void __iomem *mmio;
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struct drm_device *ddev;
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struct drm_fbdev_cma *fbdev;
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struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
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unsigned int num_crtcs;
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struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
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struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
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struct {
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struct drm_property *alpha;
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struct drm_property *colorkey;
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struct drm_property *zpos;
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} props;
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unsigned int dpad0_source;
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unsigned int vspd1_sink;
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struct rcar_du_lvdsenc *lvds[RCAR_DU_MAX_LVDS];
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struct {
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wait_queue_head_t wait;
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u32 pending;
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} commit;
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};
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static inline bool rcar_du_has(struct rcar_du_device *rcdu,
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unsigned int feature)
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{
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return rcdu->info->features & feature;
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}
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static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
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unsigned int quirk)
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{
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return rcdu->info->quirks & quirk;
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}
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static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
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{
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return ioread32(rcdu->mmio + reg);
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}
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static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
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{
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iowrite32(data, rcdu->mmio + reg);
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}
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#endif /* __RCAR_DU_DRV_H__ */
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