drivers/gpu/drm/rcar-du/rcar_du_drv.h

   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_cmm.h"
  17 #include "rcar_du_crtc.h"
  18 #include "rcar_du_group.h"
  19 #include "rcar_du_vsp.h"
  20
  21 struct clk;
  22 struct device;
  23 struct drm_device;
  24 struct drm_property;
  25 struct rcar_du_device;
  26 struct rcar_du_encoder;
  27
  28 #define RCAR_DU_FEATURE_CRTC_IRQ_CLOCK  BIT(0)  /* Per-CRTC IRQ and clock */
  29 #define RCAR_DU_FEATURE_VSP1_SOURCE     BIT(1)  /* Has inputs from VSP1 */
  30 #define RCAR_DU_FEATURE_INTERLACED      BIT(2)  /* HW supports interlaced */
  31 #define RCAR_DU_FEATURE_TVM_SYNC        BIT(3)  /* Has TV switch/sync modes */
  32
  33 #define RCAR_DU_QUIRK_ALIGN_128B        BIT(0)  /* Align pitches to 128 bytes */
  34
  35 /*
  36  * struct rcar_du_output_routing - Output routing specification
  37  * @possible_crtcs: bitmask of possible CRTCs for the output
  38  * @port: device tree port number corresponding to this output route
  39  *
  40  * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data
  41  * specify the valid SoC outputs, which CRTCs can drive the output, and the type
  42  * of in-SoC encoder for the output.
  43  */
  44 struct rcar_du_output_routing {
  45         unsigned int possible_crtcs;
  46         unsigned int port;
  47 };
  48
  49 /*
  50  * struct rcar_du_device_info - DU model-specific information
  51  * @gen: device generation (2 or 3)
  52  * @features: device features (RCAR_DU_FEATURE_*)
  53  * @quirks: device quirks (RCAR_DU_QUIRK_*)
  54  * @channels_mask: bit mask of available DU channels
  55  * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*)
  56  * @num_lvds: number of internal LVDS encoders
  57  * @dpll_mask: bit mask of DU channels equipped with a DPLL
  58  * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock
  59  */
  60 struct rcar_du_device_info {
  61         unsigned int gen;
  62         unsigned int features;
  63         unsigned int quirks;
  64         unsigned int channels_mask;
  65         struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX];
  66         unsigned int num_lvds;
  67         unsigned int dpll_mask;
  68         unsigned int lvds_clk_mask;
  69 };
  70
  71 #define RCAR_DU_MAX_CRTCS               4
  72 #define RCAR_DU_MAX_GROUPS              DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2)
  73 #define RCAR_DU_MAX_VSPS                4
  74
  75 struct rcar_du_device {
  76         struct device *dev;
  77         const struct rcar_du_device_info *info;
  78
  79         void __iomem *mmio;
  80
  81         struct drm_device *ddev;
  82
  83         struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS];
  84         unsigned int num_crtcs;
  85
  86         struct rcar_du_encoder *encoders[RCAR_DU_OUTPUT_MAX];
  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
  92         struct {
  93                 struct drm_property *colorkey;
  94         } props;
  95
  96         unsigned int dpad0_source;
  97         unsigned int dpad1_source;
  98         unsigned int vspd1_sink;
  99 };
 100
 101 static inline bool rcar_du_has(struct rcar_du_device *rcdu,
 102                                unsigned int feature)
 103 {
 104         return rcdu->info->features & feature;
 105 }
 106
 107 static inline bool rcar_du_needs(struct rcar_du_device *rcdu,
 108                                  unsigned int quirk)
 109 {
 110         return rcdu->info->quirks & quirk;
 111 }
 112
 113 static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg)
 114 {
 115         return ioread32(rcdu->mmio + reg);
 116 }
 117
 118 static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data)
 119 {
 120         iowrite32(data, rcdu->mmio + reg);
 121 }
 122
 123 #endif /* __RCAR_DU_DRV_H__ */