LXR linux/drivers/gpu/drm/rcar-du/rcar_du

   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 "rcar_du_crtc.h"
  17#include "rcar_du_group.h"
  18#include "rcar_du_vsp.h"
  19
  20struct clk;
  21struct device;
  22struct drm_device;
  23struct rcar_du_device;
  24
  25#define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK  BIT(0)  /* Per-CRTC IRQ and clock */
  26#define RCAR_DU_FEATURE_EXT_CTRL_REGS   BIT(1)  /* Has extended control registers */
  27#define RCAR_DU_FEATURE_VSP1_SOURCE     BIT(2)  /* Has inputs from VSP1 */
  28#define RCAR_DU_FEATURE_INTERLACED      BIT(3)  /* HW supports interlaced */
  29#define RCAR_DU_FEATURE_TVM_SYNC        BIT(4)  /* Has TV switch/sync modes */
  30
  31#define RCAR_DU_QUIRK_ALIGN_128B        BIT(0)  /* Align pitches to 128 bytes */
  32
  33/*
  34 * struct rcar_du_output_routing - Output routing specification
  35 * @possible_crtcs: bitmask of possible CRTCs for the output
  36 * @port: device tree port number corresponding to this output route
  37 *
  38 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
  39 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
  40 * of in-SoC encoder for the output.
  41 */
  42struct rcar_du_output_routing {
  43        unsigned int possible_crtcs;
  44        unsigned int port;
  45};
  46
  47/*
  48 * struct rcar_du_device_info - DU model-specific information
  49 * @gen: device generation (2 or 3)
  50 * @features: device features (RCAR_DU_FEATURE_*)
  51 * @quirks: device quirks (RCAR_DU_QUIRK_*)
  52 * @channels_mask: bit mask of available DU channels
  53 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
  54 * @num_lvds: number of internal LVDS encoders
  55 * @dpll_mask: bit mask of DU channels equipped with a DPLL
  56 * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock
  57 */
  58struct rcar_du_device_info {
  59        unsigned int gen;
  60        unsigned int features;
  61        unsigned int quirks;
  62        unsigned int channels_mask;
  63        struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
  64        unsigned int num_lvds;
  65        unsigned int dpll_mask;
  66        unsigned int lvds_clk_mask;
  67};
  68
  69#define RCAR_DU_MAX_CRTCS               4
  70#define RCAR_DU_MAX_GROUPS              DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
  71#define RCAR_DU_MAX_VSPS                4
  72
  73struct rcar_du_device {
  74        struct device *dev;
  75        const struct rcar_du_device_info *info;
  76
  77        void __iomem *mmio;
  78
  79        struct drm_device *ddev;
  80
  81        struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
  82        unsigned int num_crtcs;
  83
  84        struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
  85        struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
  86
  87        struct {
  88                struct drm_property *colorkey;
  89        } props;
  90
  91        unsigned int dpad0_source;
  92        unsigned int vspd1_sink;
  93};
  94
  95static inline bool rcar_du_has(struct rcar_du_device *rcdu,
  96                               unsigned int feature)
  97{
  98        return rcdu->info->features & feature;
  99}
 100
 101static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
 102                                 unsigned int quirk)
 103{
 104        return rcdu->info->quirks & quirk;
 105}
 106
 107static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
 108{
 109        return ioread32(rcdu->mmio + reg);
 110}
 111
 112static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 113{
 114        iowrite32(data, rcdu->mmio + reg);
 115}
 116
 117#endif /* __RCAR_DU_DRV_H__ */
 118