1 /* SPDX-License-Identifier: MIT */ 2 3 #ifndef __LINUX_GUD_INTERNAL_H 4 #define __LINUX_GUD_INTERNAL_H 5 6 #include <linux/list.h> 7 #include <linux/mutex.h> 8 #include <linux/scatterlist.h> 9 #include <linux/usb.h> 10 #include <linux/workqueue.h> 11 #include <uapi/drm/drm_fourcc.h> 12 13 #include <drm/drm_modes.h> 14 15 struct gud_device { 16 struct drm_device drm; 17 struct drm_plane plane; 18 struct drm_crtc crtc; 19 struct work_struct work; 20 u32 flags; 21 const struct drm_format_info *xrgb8888_emulation_format; 22 23 u16 *properties; 24 unsigned int num_properties; 25 26 unsigned int bulk_pipe; 27 void *bulk_buf; 28 size_t bulk_len; 29 struct sg_table bulk_sgt; 30 31 u8 compression; 32 void *lz4_comp_mem; 33 void *compress_buf; 34 35 u64 stats_length; 36 u64 stats_actual_length; 37 unsigned int stats_num_errors; 38 39 struct mutex ctrl_lock; /* Serialize get/set and status transfers */ 40 41 struct mutex damage_lock; /* Protects the following members: */ 42 struct drm_framebuffer *fb; 43 struct drm_rect damage; 44 bool prev_flush_failed; 45 void *shadow_buf; 46 }; 47 48 static inline struct gud_device *to_gud_device(struct drm_device *drm) 49 { 50 return container_of(drm, struct gud_device, drm); 51 } 52 53 static inline struct usb_device *gud_to_usb_device(struct gud_device *gdrm) 54 { 55 return interface_to_usbdev(to_usb_interface(gdrm->drm.dev)); 56 } 57 58 int gud_usb_get(struct gud_device *gdrm, u8 request, u16 index, void *buf, size_t len); 59 int gud_usb_set(struct gud_device *gdrm, u8 request, u16 index, void *buf, size_t len); 60 int gud_usb_get_u8(struct gud_device *gdrm, u8 request, u16 index, u8 *val); 61 int gud_usb_set_u8(struct gud_device *gdrm, u8 request, u8 val); 62 63 void gud_clear_damage(struct gud_device *gdrm); 64 void gud_flush_work(struct work_struct *work); 65 int gud_plane_atomic_check(struct drm_plane *plane, 66 struct drm_atomic_state *state); 67 void gud_plane_atomic_update(struct drm_plane *plane, 68 struct drm_atomic_state *atomic_state); 69 int gud_connector_fill_properties(struct drm_connector_state *connector_state, 70 struct gud_property_req *properties); 71 int gud_get_connectors(struct gud_device *gdrm); 72 73 /* Driver internal fourcc transfer formats */ 74 #define GUD_DRM_FORMAT_R1 0x00000122 75 #define GUD_DRM_FORMAT_XRGB1111 0x03121722 76 77 static inline u8 gud_from_fourcc(u32 fourcc) 78 { 79 switch (fourcc) { 80 case GUD_DRM_FORMAT_R1: 81 return GUD_PIXEL_FORMAT_R1; 82 case DRM_FORMAT_R8: 83 return GUD_PIXEL_FORMAT_R8; 84 case GUD_DRM_FORMAT_XRGB1111: 85 return GUD_PIXEL_FORMAT_XRGB1111; 86 case DRM_FORMAT_RGB332: 87 return GUD_PIXEL_FORMAT_RGB332; 88 case DRM_FORMAT_RGB565: 89 return GUD_PIXEL_FORMAT_RGB565; 90 case DRM_FORMAT_RGB888: 91 return GUD_PIXEL_FORMAT_RGB888; 92 case DRM_FORMAT_XRGB8888: 93 return GUD_PIXEL_FORMAT_XRGB8888; 94 case DRM_FORMAT_ARGB8888: 95 return GUD_PIXEL_FORMAT_ARGB8888; 96 } 97 98 return 0; 99 } 100 101 static inline u32 gud_to_fourcc(u8 format) 102 { 103 switch (format) { 104 case GUD_PIXEL_FORMAT_R1: 105 return GUD_DRM_FORMAT_R1; 106 case GUD_PIXEL_FORMAT_R8: 107 return DRM_FORMAT_R8; 108 case GUD_PIXEL_FORMAT_XRGB1111: 109 return GUD_DRM_FORMAT_XRGB1111; 110 case GUD_PIXEL_FORMAT_RGB332: 111 return DRM_FORMAT_RGB332; 112 case GUD_PIXEL_FORMAT_RGB565: 113 return DRM_FORMAT_RGB565; 114 case GUD_PIXEL_FORMAT_RGB888: 115 return DRM_FORMAT_RGB888; 116 case GUD_PIXEL_FORMAT_XRGB8888: 117 return DRM_FORMAT_XRGB8888; 118 case GUD_PIXEL_FORMAT_ARGB8888: 119 return DRM_FORMAT_ARGB8888; 120 } 121 122 return 0; 123 } 124 125 static inline void gud_from_display_mode(struct gud_display_mode_req *dst, 126 const struct drm_display_mode *src) 127 { 128 u32 flags = src->flags & GUD_DISPLAY_MODE_FLAG_USER_MASK; 129 130 if (src->type & DRM_MODE_TYPE_PREFERRED) 131 flags |= GUD_DISPLAY_MODE_FLAG_PREFERRED; 132 133 dst->clock = cpu_to_le32(src->clock); 134 dst->hdisplay = cpu_to_le16(src->hdisplay); 135 dst->hsync_start = cpu_to_le16(src->hsync_start); 136 dst->hsync_end = cpu_to_le16(src->hsync_end); 137 dst->htotal = cpu_to_le16(src->htotal); 138 dst->vdisplay = cpu_to_le16(src->vdisplay); 139 dst->vsync_start = cpu_to_le16(src->vsync_start); 140 dst->vsync_end = cpu_to_le16(src->vsync_end); 141 dst->vtotal = cpu_to_le16(src->vtotal); 142 dst->flags = cpu_to_le32(flags); 143 } 144 145 static inline void gud_to_display_mode(struct drm_display_mode *dst, 146 const struct gud_display_mode_req *src) 147 { 148 u32 flags = le32_to_cpu(src->flags); 149 150 memset(dst, 0, sizeof(*dst)); 151 dst->clock = le32_to_cpu(src->clock); 152 dst->hdisplay = le16_to_cpu(src->hdisplay); 153 dst->hsync_start = le16_to_cpu(src->hsync_start); 154 dst->hsync_end = le16_to_cpu(src->hsync_end); 155 dst->htotal = le16_to_cpu(src->htotal); 156 dst->vdisplay = le16_to_cpu(src->vdisplay); 157 dst->vsync_start = le16_to_cpu(src->vsync_start); 158 dst->vsync_end = le16_to_cpu(src->vsync_end); 159 dst->vtotal = le16_to_cpu(src->vtotal); 160 dst->flags = flags & GUD_DISPLAY_MODE_FLAG_USER_MASK; 161 dst->type = DRM_MODE_TYPE_DRIVER; 162 if (flags & GUD_DISPLAY_MODE_FLAG_PREFERRED) 163 dst->type |= DRM_MODE_TYPE_PREFERRED; 164 drm_mode_set_name(dst); 165 } 166 167 #endif 168