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1/* SPDX-License-Identifier: MIT */2 3#ifndef __LINUX_GUD_INTERNAL_H4#define __LINUX_GUD_INTERNAL_H5 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#include <drm/drm_simple_kms_helper.h>15 16struct gud_device {17 struct drm_device drm;18 struct drm_simple_display_pipe pipe;19 struct device *dmadev;20 struct work_struct work;21 u32 flags;22 const struct drm_format_info *xrgb8888_emulation_format;23 24 u16 *properties;25 unsigned int num_properties;26 27 unsigned int bulk_pipe;28 void *bulk_buf;29 size_t bulk_len;30 struct sg_table bulk_sgt;31 32 u8 compression;33 void *lz4_comp_mem;34 void *compress_buf;35 36 u64 stats_length;37 u64 stats_actual_length;38 unsigned int stats_num_errors;39 40 struct mutex ctrl_lock; /* Serialize get/set and status transfers */41 42 struct mutex damage_lock; /* Protects the following members: */43 struct drm_framebuffer *fb;44 struct drm_rect damage;45 bool prev_flush_failed;46 void *shadow_buf;47};48 49static inline struct gud_device *to_gud_device(struct drm_device *drm)50{51 return container_of(drm, struct gud_device, drm);52}53 54static inline struct usb_device *gud_to_usb_device(struct gud_device *gdrm)55{56 return interface_to_usbdev(to_usb_interface(gdrm->drm.dev));57}58 59int gud_usb_get(struct gud_device *gdrm, u8 request, u16 index, void *buf, size_t len);60int gud_usb_set(struct gud_device *gdrm, u8 request, u16 index, void *buf, size_t len);61int gud_usb_get_u8(struct gud_device *gdrm, u8 request, u16 index, u8 *val);62int gud_usb_set_u8(struct gud_device *gdrm, u8 request, u8 val);63 64void gud_clear_damage(struct gud_device *gdrm);65void gud_flush_work(struct work_struct *work);66int gud_pipe_check(struct drm_simple_display_pipe *pipe,67 struct drm_plane_state *new_plane_state,68 struct drm_crtc_state *new_crtc_state);69void gud_pipe_update(struct drm_simple_display_pipe *pipe,70 struct drm_plane_state *old_state);71int gud_connector_fill_properties(struct drm_connector_state *connector_state,72 struct gud_property_req *properties);73int gud_get_connectors(struct gud_device *gdrm);74 75/* Driver internal fourcc transfer formats */76#define GUD_DRM_FORMAT_R1 0x0000012277#define GUD_DRM_FORMAT_XRGB1111 0x0312172278 79static inline u8 gud_from_fourcc(u32 fourcc)80{81 switch (fourcc) {82 case GUD_DRM_FORMAT_R1:83 return GUD_PIXEL_FORMAT_R1;84 case DRM_FORMAT_R8:85 return GUD_PIXEL_FORMAT_R8;86 case GUD_DRM_FORMAT_XRGB1111:87 return GUD_PIXEL_FORMAT_XRGB1111;88 case DRM_FORMAT_RGB332:89 return GUD_PIXEL_FORMAT_RGB332;90 case DRM_FORMAT_RGB565:91 return GUD_PIXEL_FORMAT_RGB565;92 case DRM_FORMAT_RGB888:93 return GUD_PIXEL_FORMAT_RGB888;94 case DRM_FORMAT_XRGB8888:95 return GUD_PIXEL_FORMAT_XRGB8888;96 case DRM_FORMAT_ARGB8888:97 return GUD_PIXEL_FORMAT_ARGB8888;98 }99 100 return 0;101}102 103static inline u32 gud_to_fourcc(u8 format)104{105 switch (format) {106 case GUD_PIXEL_FORMAT_R1:107 return GUD_DRM_FORMAT_R1;108 case GUD_PIXEL_FORMAT_R8:109 return DRM_FORMAT_R8;110 case GUD_PIXEL_FORMAT_XRGB1111:111 return GUD_DRM_FORMAT_XRGB1111;112 case GUD_PIXEL_FORMAT_RGB332:113 return DRM_FORMAT_RGB332;114 case GUD_PIXEL_FORMAT_RGB565:115 return DRM_FORMAT_RGB565;116 case GUD_PIXEL_FORMAT_RGB888:117 return DRM_FORMAT_RGB888;118 case GUD_PIXEL_FORMAT_XRGB8888:119 return DRM_FORMAT_XRGB8888;120 case GUD_PIXEL_FORMAT_ARGB8888:121 return DRM_FORMAT_ARGB8888;122 }123 124 return 0;125}126 127static inline void gud_from_display_mode(struct gud_display_mode_req *dst,128 const struct drm_display_mode *src)129{130 u32 flags = src->flags & GUD_DISPLAY_MODE_FLAG_USER_MASK;131 132 if (src->type & DRM_MODE_TYPE_PREFERRED)133 flags |= GUD_DISPLAY_MODE_FLAG_PREFERRED;134 135 dst->clock = cpu_to_le32(src->clock);136 dst->hdisplay = cpu_to_le16(src->hdisplay);137 dst->hsync_start = cpu_to_le16(src->hsync_start);138 dst->hsync_end = cpu_to_le16(src->hsync_end);139 dst->htotal = cpu_to_le16(src->htotal);140 dst->vdisplay = cpu_to_le16(src->vdisplay);141 dst->vsync_start = cpu_to_le16(src->vsync_start);142 dst->vsync_end = cpu_to_le16(src->vsync_end);143 dst->vtotal = cpu_to_le16(src->vtotal);144 dst->flags = cpu_to_le32(flags);145}146 147static inline void gud_to_display_mode(struct drm_display_mode *dst,148 const struct gud_display_mode_req *src)149{150 u32 flags = le32_to_cpu(src->flags);151 152 memset(dst, 0, sizeof(*dst));153 dst->clock = le32_to_cpu(src->clock);154 dst->hdisplay = le16_to_cpu(src->hdisplay);155 dst->hsync_start = le16_to_cpu(src->hsync_start);156 dst->hsync_end = le16_to_cpu(src->hsync_end);157 dst->htotal = le16_to_cpu(src->htotal);158 dst->vdisplay = le16_to_cpu(src->vdisplay);159 dst->vsync_start = le16_to_cpu(src->vsync_start);160 dst->vsync_end = le16_to_cpu(src->vsync_end);161 dst->vtotal = le16_to_cpu(src->vtotal);162 dst->flags = flags & GUD_DISPLAY_MODE_FLAG_USER_MASK;163 dst->type = DRM_MODE_TYPE_DRIVER;164 if (flags & GUD_DISPLAY_MODE_FLAG_PREFERRED)165 dst->type |= DRM_MODE_TYPE_PREFERRED;166 drm_mode_set_name(dst);167}168 169#endif170