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 <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_CLOCK  BIT(0)  /* Per-CRTC IRQ and clock */
  30#define RCAR_DU_FEATURE_VSP1_SOURCE     BIT(1)  /* Has inputs from VSP1 */
  31#define RCAR_DU_FEATURE_INTERLACED      BIT(2)  /* HW supports interlaced */
  32#define RCAR_DU_FEATURE_TVM_SYNC        BIT(3)  /* Has TV switch/sync modes */
  33
  34#define RCAR_DU_QUIRK_ALIGN_128B        BIT(0)  /* Align pitches to 128 bytes */
  35
  36/*
  37 * struct rcar_du_output_routing - Output routing specification
  38 * @possible_crtcs: bitmask of possible CRTCs for the output
  39 * @port: device tree port number corresponding to this output route
  40 *
  41 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
  42 * specify the valid SoC outputs, which CRTCs can drive the output, and the type
  43 * of in-SoC encoder for the output.
  44 */
  45struct rcar_du_output_routing {
  46        unsigned int possible_crtcs;
  47        unsigned int port;
  48};
  49
  50/*
  51 * struct rcar_du_device_info - DU model-specific information
  52 * @gen: device generation (2 or 3)
  53 * @features: device features (RCAR_DU_FEATURE_*)
  54 * @quirks: device quirks (RCAR_DU_QUIRK_*)
  55 * @channels_mask: bit mask of available DU channels
  56 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
  57 * @num_lvds: number of internal LVDS encoders
  58 * @dpll_mask: bit mask of DU channels equipped with a DPLL
  59 * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock
  60 */
  61struct rcar_du_device_info {
  62        unsigned int gen;
  63        unsigned int features;
  64        unsigned int quirks;
  65        unsigned int channels_mask;
  66        struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
  67        unsigned int num_lvds;
  68        unsigned int dpll_mask;
  69        unsigned int lvds_clk_mask;
  70};
  71
  72#define RCAR_DU_MAX_CRTCS               4
  73#define RCAR_DU_MAX_GROUPS              DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
  74#define RCAR_DU_MAX_VSPS                4
  75#define RCAR_DU_MAX_LVDS                2
  76
  77struct rcar_du_device {
  78        struct device *dev;
  79        const struct rcar_du_device_info *info;
  80
  81        void __iomem *mmio;
  82
  83        struct drm_device ddev;
  84
  85        struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
  86        unsigned int num_crtcs;
  87
  88        struct rcar_du_group groups[RCAR_DU_MAX_GROUPS];
  89        struct platform_device *cmms[RCAR_DU_MAX_CRTCS];
  90        struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS];
  91        struct drm_bridge *lvds[RCAR_DU_MAX_LVDS];
  92
  93        struct {
  94                struct drm_property *colorkey;
  95        } props;
  96
  97        unsigned int dpad0_source;
  98        unsigned int dpad1_source;
  99        unsigned int vspd1_sink;
 100};
 101
 102static inline struct rcar_du_device *to_rcar_du_device(struct drm_device *dev)
 103{
 104        return container_of(dev, struct rcar_du_device, ddev);
 105}
 106
 107static inline bool rcar_du_has(struct rcar_du_device *rcdu,
 108                               unsigned int feature)
 109{
 110        return rcdu->info->features & feature;
 111}
 112
 113static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
 114                                 unsigned int quirk)
 115{
 116        return rcdu->info->quirks & quirk;
 117}
 118
 119static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
 120{
 121        return ioread32(rcdu->mmio + reg);
 122}
 123
 124static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 125{
 126        iowrite32(data, rcdu->mmio + reg);
 127}
 128
 129#endif /* __RCAR_DU_DRV_H__ */
 130