1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * 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 23 struct clk; 24 struct device; 25 struct drm_bridge; 26 struct drm_property; 27 struct 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 #define RCAR_DU_FEATURE_NO_BLENDING BIT(5) /* PnMR.SPIM does not have ALP nor EOR bits */ 35 36 #define RCAR_DU_QUIRK_ALIGN_128B BIT(0) /* Align pitches to 128 bytes */ 37 38 enum rcar_du_output { 39 RCAR_DU_OUTPUT_DPAD0, 40 RCAR_DU_OUTPUT_DPAD1, 41 RCAR_DU_OUTPUT_DSI0, 42 RCAR_DU_OUTPUT_DSI1, 43 RCAR_DU_OUTPUT_HDMI0, 44 RCAR_DU_OUTPUT_HDMI1, 45 RCAR_DU_OUTPUT_LVDS0, 46 RCAR_DU_OUTPUT_LVDS1, 47 RCAR_DU_OUTPUT_TCON, 48 RCAR_DU_OUTPUT_MAX, 49 }; 50 51 /* 52 * struct rcar_du_output_routing - Output routing specification 53 * @possible_crtcs: bitmask of possible CRTCs for the output 54 * @port: device tree port number corresponding to this output route 55 * 56 * The DU has 5 possible outputs (DPAD0/1, LVDS0/1, TCON). Output routing data 57 * specify the valid SoC outputs, which CRTCs can drive the output, and the type 58 * of in-SoC encoder for the output. 59 */ 60 struct rcar_du_output_routing { 61 unsigned int possible_crtcs; 62 unsigned int port; 63 }; 64 65 /* 66 * struct rcar_du_device_info - DU model-specific information 67 * @gen: device generation (2 or 3) 68 * @features: device features (RCAR_DU_FEATURE_*) 69 * @quirks: device quirks (RCAR_DU_QUIRK_*) 70 * @channels_mask: bit mask of available DU channels 71 * @routes: array of CRTC to output routes, indexed by output (RCAR_DU_OUTPUT_*) 72 * @num_lvds: number of internal LVDS encoders 73 * @num_rpf: number of RPFs in VSP 74 * @dpll_mask: bit mask of DU channels equipped with a DPLL 75 * @dsi_clk_mask: bitmask of channels that can use the DSI clock as dot clock 76 * @lvds_clk_mask: bitmask of channels that can use the LVDS clock as dot clock 77 */ 78 struct rcar_du_device_info { 79 unsigned int gen; 80 unsigned int features; 81 unsigned int quirks; 82 unsigned int channels_mask; 83 struct rcar_du_output_routing routes[RCAR_DU_OUTPUT_MAX]; 84 unsigned int num_lvds; 85 unsigned int num_rpf; 86 unsigned int dpll_mask; 87 unsigned int dsi_clk_mask; 88 unsigned int lvds_clk_mask; 89 }; 90 91 #define RCAR_DU_MAX_CRTCS 4 92 #define RCAR_DU_MAX_GROUPS DIV_ROUND_UP(RCAR_DU_MAX_CRTCS, 2) 93 #define RCAR_DU_MAX_VSPS 4 94 #define RCAR_DU_MAX_LVDS 2 95 #define RCAR_DU_MAX_DSI 2 96 97 struct rcar_du_device { 98 struct device *dev; 99 const struct rcar_du_device_info *info; 100 101 void __iomem *mmio; 102 103 struct drm_device ddev; 104 105 struct rcar_du_crtc crtcs[RCAR_DU_MAX_CRTCS]; 106 unsigned int num_crtcs; 107 108 struct rcar_du_group groups[RCAR_DU_MAX_GROUPS]; 109 struct platform_device *cmms[RCAR_DU_MAX_CRTCS]; 110 struct rcar_du_vsp vsps[RCAR_DU_MAX_VSPS]; 111 struct drm_bridge *lvds[RCAR_DU_MAX_LVDS]; 112 struct drm_bridge *dsi[RCAR_DU_MAX_DSI]; 113 114 struct { 115 struct drm_property *colorkey; 116 } props; 117 118 unsigned int dpad0_source; 119 unsigned int dpad1_source; 120 unsigned int vspd1_sink; 121 }; 122 123 static inline struct rcar_du_device *to_rcar_du_device(struct drm_device *dev) 124 { 125 return container_of(dev, struct rcar_du_device, ddev); 126 } 127 128 static inline bool rcar_du_has(struct rcar_du_device *rcdu, 129 unsigned int feature) 130 { 131 return rcdu->info->features & feature; 132 } 133 134 static inline bool rcar_du_needs(struct rcar_du_device *rcdu, 135 unsigned int quirk) 136 { 137 return rcdu->info->quirks & quirk; 138 } 139 140 static inline u32 rcar_du_read(struct rcar_du_device *rcdu, u32 reg) 141 { 142 return ioread32(rcdu->mmio + reg); 143 } 144 145 static inline void rcar_du_write(struct rcar_du_device *rcdu, u32 reg, u32 data) 146 { 147 iowrite32(data, rcdu->mmio + reg); 148 } 149 150 const char *rcar_du_output_name(enum rcar_du_output output); 151 152 #endif /* __RCAR_DU_DRV_H__ */ 153