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        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__ */
 148