cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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rcar_du_drv.h (4008B)

      1/* SPDX-License-Identifier: GPL-2.0+ */
      2/*
      3 * rcar_du_drv.h  --  R-Car Display Unit DRM driver
      4 *
      5 * Copyright (C) 2013-2015 Renesas Electronics Corporation
      6 *
      7 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
      8 */
      9
     10#ifndef __RCAR_DU_DRV_H__
     11#define __RCAR_DU_DRV_H__
     12
     13#include <linux/kernel.h>
     14#include <linux/wait.h>
     15
     16#include <drm/drm_device.h>
     17
     18#include "rcar_cmm.h"
     19#include "rcar_du_crtc.h"
     20#include "rcar_du_group.h"
     21#include "rcar_du_vsp.h"
     22
     23struct clk;
     24struct device;
     25struct drm_bridge;
     26struct drm_property;
     27struct rcar_du_device;
     28
     29#define RCAR_DU_FEATURE_CRTC_IRQ	BIT(0)	/* Per-CRTC IRQ */
     30#define RCAR_DU_FEATURE_CRTC_CLOCK	BIT(1)	/* Per-CRTC clock */
     31#define RCAR_DU_FEATURE_VSP1_SOURCE	BIT(2)	/* Has inputs from VSP1 */
     32#define RCAR_DU_FEATURE_INTERLACED	BIT(3)	/* HW supports interlaced */
     33#define RCAR_DU_FEATURE_TVM_SYNC	BIT(4)	/* Has TV switch/sync modes */
     34
     35#define RCAR_DU_QUIRK_ALIGN_128B	BIT(0)	/* Align pitches to 128 bytes */
     36
     37enum rcar_du_output {
     38	RCAR_DU_OUTPUT_DPAD0,
     39	RCAR_DU_OUTPUT_DPAD1,
     40	RCAR_DU_OUTPUT_DSI0,
     41	RCAR_DU_OUTPUT_DSI1,
     42	RCAR_DU_OUTPUT_HDMI0,
     43	RCAR_DU_OUTPUT_HDMI1,
     44	RCAR_DU_OUTPUT_LVDS0,
     45	RCAR_DU_OUTPUT_LVDS1,
     46	RCAR_DU_OUTPUT_TCON,
     47	RCAR_DU_OUTPUT_MAX,
     48};
     49
     50/*
     51 * struct rcar_du_output_routing - Output routing specification
     52 * @possible_crtcs: bitmask of possible CRTCs for the output
     53 * @port: device tree port number corresponding to this output route
     54 *
     55 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
     56 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
     57 * of in-SoC encoder for the output.
     58 */
     59struct rcar_du_output_routing {
     60	unsigned int possible_crtcs;
     61	unsigned int port;
     62};
     63
     64/*
     65 * struct rcar_du_device_info - DU model-specific information
     66 * @gen: device generation (2 or 3)
     67 * @features: device features (RCAR_DU_FEATURE_*)
     68 * @quirks: device quirks (RCAR_DU_QUIRK_*)
     69 * @channels_mask: bit mask of available DU channels
     70 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
     71 * @num_lvds: number of internal LVDS encoders
     72 * @dpll_mask: bit mask of DU channels equipped with a DPLL
     73 * @dsi_clk_mask: bitmask of channels that can use the DSI clock as dot clock
     74 * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock
     75 */
     76struct rcar_du_device_info {
     77	unsigned int gen;
     78	unsigned int features;
     79	unsigned int quirks;
     80	unsigned int channels_mask;
     81	struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
     82	unsigned int num_lvds;
     83	unsigned int dpll_mask;
     84	unsigned int dsi_clk_mask;
     85	unsigned int lvds_clk_mask;
     86};
     87
     88#define RCAR_DU_MAX_CRTCS		4
     89#define RCAR_DU_MAX_GROUPS		DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
     90#define RCAR_DU_MAX_VSPS		4
     91#define RCAR_DU_MAX_LVDS		2
     92
     93struct rcar_du_device {
     94	struct device *dev;
     95	const struct rcar_du_device_info *info;
     96
     97	void __iomem *mmio;
     98
     99	struct drm_device ddev;
    100
    101	struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
    102	unsigned int num_crtcs;
    103
    104	struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
    105	struct platform_device *cmms[RCAR_DU_MAX_CRTCS];
    106	struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
    107	struct drm_bridge *lvds[RCAR_DU_MAX_LVDS];
    108
    109	struct {
    110		struct drm_property *colorkey;
    111	} props;
    112
    113	unsigned int dpad0_source;
    114	unsigned int dpad1_source;
    115	unsigned int vspd1_sink;
    116};
    117
    118static inline struct rcar_du_device *to_rcar_du_device(struct drm_device *dev)
    119{
    120	return container_of(dev, struct rcar_du_device, ddev);
    121}
    122
    123static inline bool rcar_du_has(struct rcar_du_device *rcdu,
    124			       unsigned int feature)
    125{
    126	return rcdu->info->features & feature;
    127}
    128
    129static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
    130				 unsigned int quirk)
    131{
    132	return rcdu->info->quirks & quirk;
    133}
    134
    135static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
    136{
    137	return ioread32(rcdu->mmio + reg);
    138}
    139
    140static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
    141{
    142	iowrite32(data, rcdu->mmio + reg);
    143}
    144
    145const char *rcar_du_output_name(enum rcar_du_output output);
    146
    147#endif /* __RCAR_DU_DRV_H__ */