1/* 2 * Copyright (c) 2006-2009 Red Hat Inc. 3 * Copyright (c) 2006-2008 Intel Corporation 4 * Copyright (c) 2007 Dave Airlie <airlied@linux.ie> 5 * 6 * DRM framebuffer helper functions 7 * 8 * Permission to use, copy, modify, distribute, and sell this software and its 9 * documentation for any purpose is hereby granted without fee, provided that 10 * the above copyright notice appear in all copies and that both that copyright 11 * notice and this permission notice appear in supporting documentation, and 12 * that the name of the copyright holders not be used in advertising or 13 * publicity pertaining to distribution of the software without specific, 14 * written prior permission. The copyright holders make no representations 15 * about the suitability of this software for any purpose. It is provided "as 16 * is" without express or implied warranty. 17 * 18 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, 19 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO 20 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR 21 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 22 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 23 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 24 * OF THIS SOFTWARE. 25 * 26 * Authors: 27 * Dave Airlie <airlied@linux.ie> 28 * Jesse Barnes <jesse.barnes@intel.com> 29 */ 30#ifndef DRM_FB_HELPER_H 31#define DRM_FB_HELPER_H 32 33struct drm_fb_helper; 34 35#include <linux/kgdb.h> 36 37struct drm_fb_helper_crtc { 38 uint32_t crtc_id; 39 struct drm_mode_set mode_set; 40 struct drm_display_mode *desired_mode; 41}; 42 43/* mode specified on the command line */ 44struct drm_fb_helper_cmdline_mode { 45 bool specified; 46 bool refresh_specified; 47 bool bpp_specified; 48 int xres, yres; 49 int bpp; 50 int refresh; 51 bool rb; 52 bool interlace; 53 bool cvt; 54 bool margins; 55}; 56 57struct drm_fb_helper_surface_size { 58 u32 fb_width; 59 u32 fb_height; 60 u32 surface_width; 61 u32 surface_height; 62 u32 surface_bpp; 63 u32 surface_depth; 64}; 65 66struct drm_fb_helper_funcs { 67 void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green, 68 u16 blue, int regno); 69 void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green, 70 u16 *blue, int regno); 71 72 int (*fb_probe)(struct drm_fb_helper *helper, 73 struct drm_fb_helper_surface_size *sizes); 74}; 75 76struct drm_fb_helper_connector { 77 struct drm_fb_helper_cmdline_mode cmdline_mode; 78 struct drm_connector *connector; 79}; 80 81struct drm_fb_helper { 82 struct drm_framebuffer *fb; 83 struct drm_framebuffer *saved_fb; 84 struct drm_device *dev; 85 struct drm_display_mode *mode; 86 int crtc_count; 87 struct drm_fb_helper_crtc *crtc_info; 88 int connector_count; 89 struct drm_fb_helper_connector **connector_info; 90 struct drm_fb_helper_funcs *funcs; 91 int conn_limit; 92 struct fb_info *fbdev; 93 u32 pseudo_palette[17]; 94 struct list_head kernel_fb_list; 95 96 /* we got a hotplug but fbdev wasn't running the console 97 delay until next set_par */ 98 bool delayed_hotplug; 99}; 100 101int drm_fb_helper_single_fb_probe(struct drm_fb_helper *helper, 102 int preferred_bpp); 103 104int drm_fb_helper_init(struct drm_device *dev, 105 struct drm_fb_helper *helper, int crtc_count, 106 int max_conn); 107void drm_fb_helper_fini(struct drm_fb_helper *helper); 108int drm_fb_helper_blank(int blank, struct fb_info *info); 109int drm_fb_helper_pan_display(struct fb_var_screeninfo *var, 110 struct fb_info *info); 111int drm_fb_helper_set_par(struct fb_info *info); 112int drm_fb_helper_check_var(struct fb_var_screeninfo *var, 113 struct fb_info *info); 114int drm_fb_helper_setcolreg(unsigned regno, 115 unsigned red, 116 unsigned green, 117 unsigned blue, 118 unsigned transp, 119 struct fb_info *info); 120 121void drm_fb_helper_restore(void); 122void drm_fb_helper_fill_var(struct fb_info *info, struct drm_fb_helper *fb_helper, 123 uint32_t fb_width, uint32_t fb_height); 124void drm_fb_helper_fill_fix(struct fb_info *info, uint32_t pitch, 125 uint32_t depth); 126 127int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info); 128 129bool drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper); 130bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel); 131int drm_fb_helper_single_add_all_connectors(struct drm_fb_helper *fb_helper); 132int drm_fb_helper_debug_enter(struct fb_info *info); 133int drm_fb_helper_debug_leave(struct fb_info *info); 134 135#endif 136