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-rw-r--r--Documentation/fb/intel810.txt56
1 files changed, 30 insertions, 26 deletions
diff --git a/Documentation/fb/intel810.txt b/Documentation/fb/intel810.txt
index fd68b162e4a1..4f0d6bc789ef 100644
--- a/Documentation/fb/intel810.txt
+++ b/Documentation/fb/intel810.txt
@@ -5,6 +5,7 @@ Intel 810/815 Framebuffer driver
5 March 17, 2002 5 March 17, 2002
6 6
7 First Released: July 2001 7 First Released: July 2001
8 Last Update: September 12, 2005
8================================================================ 9================================================================
9 10
10A. Introduction 11A. Introduction
@@ -44,6 +45,8 @@ B. Features
44 45
45 - Hardware Cursor Support 46 - Hardware Cursor Support
46 47
48 - Supports EDID probing either by DDC/I2C or through the BIOS
49
47C. List of available options 50C. List of available options
48 51
49 a. "video=i810fb" 52 a. "video=i810fb"
@@ -52,14 +55,17 @@ C. List of available options
52 Recommendation: required 55 Recommendation: required
53 56
54 b. "xres:<value>" 57 b. "xres:<value>"
55 select horizontal resolution in pixels 58 select horizontal resolution in pixels. (This parameter will be
59 ignored if 'mode_option' is specified. See 'o' below).
56 60
57 Recommendation: user preference 61 Recommendation: user preference
58 (default = 640) 62 (default = 640)
59 63
60 c. "yres:<value>" 64 c. "yres:<value>"
61 select vertical resolution in scanlines. If Discrete Video Timings 65 select vertical resolution in scanlines. If Discrete Video Timings
62 is enabled, this will be ignored and computed as 3*xres/4. 66 is enabled, this will be ignored and computed as 3*xres/4. (This
67 parameter will be ignored if 'mode_option' is specified. See 'o'
68 below)
63 69
64 Recommendation: user preference 70 Recommendation: user preference
65 (default = 480) 71 (default = 480)
@@ -86,7 +92,8 @@ C. List of available options
86 g. "hsync1/hsync2:<value>" 92 g. "hsync1/hsync2:<value>"
87 select the minimum and maximum Horizontal Sync Frequency of the 93 select the minimum and maximum Horizontal Sync Frequency of the
88 monitor in KHz. If a using a fixed frequency monitor, hsync1 must 94 monitor in KHz. If a using a fixed frequency monitor, hsync1 must
89 be equal to hsync2. 95 be equal to hsync2. If EDID probing is successful, these will be
96 ignored and values will be taken from the EDID block.
90 97
91 Recommendation: check monitor manual for correct values 98 Recommendation: check monitor manual for correct values
92 default (29/30) 99 default (29/30)
@@ -94,7 +101,8 @@ C. List of available options
94 h. "vsync1/vsync2:<value>" 101 h. "vsync1/vsync2:<value>"
95 select the minimum and maximum Vertical Sync Frequency of the monitor 102 select the minimum and maximum Vertical Sync Frequency of the monitor
96 in Hz. You can also use this option to lock your monitor's refresh 103 in Hz. You can also use this option to lock your monitor's refresh
97 rate. 104 rate. If EDID probing is successful, these will be ignored and values
105 will be taken from the EDID block.
98 106
99 Recommendation: check monitor manual for correct values 107 Recommendation: check monitor manual for correct values
100 (default = 60/60) 108 (default = 60/60)
@@ -154,7 +162,11 @@ C. List of available options
154 162
155 Recommendation: do not set 163 Recommendation: do not set
156 (default = not set) 164 (default = not set)
157 165 o. <xres>x<yres>[-<bpp>][@<refresh>]
166 The driver will now accept specification of boot mode option. If this
167 is specified, the options 'xres' and 'yres' will be ignored. See
168 Documentation/fb/modedb.txt for usage.
169
158D. Kernel booting 170D. Kernel booting
159 171
160Separate each option/option-pair by commas (,) and the option from its value 172Separate each option/option-pair by commas (,) and the option from its value
@@ -176,7 +188,10 @@ will be computed based on the hsync1/hsync2 and vsync1/vsync2 values.
176 188
177IMPORTANT: 189IMPORTANT:
178You must include hsync1, hsync2, vsync1 and vsync2 to enable video modes 190You must include hsync1, hsync2, vsync1 and vsync2 to enable video modes
179better than 640x480 at 60Hz. 191better than 640x480 at 60Hz. HOWEVER, if your chipset/display combination
192supports I2C and has an EDID block, you can safely exclude hsync1, hsync2,
193vsync1 and vsync2 parameters. These parameters will be taken from the EDID
194block.
180 195
181E. Module options 196E. Module options
182 197
@@ -217,32 +232,21 @@ F. Setup
217 This is required. The option is under "Character Devices" 232 This is required. The option is under "Character Devices"
218 233
219 d. Under "Graphics Support", select "Intel 810/815" either statically 234 d. Under "Graphics Support", select "Intel 810/815" either statically
220 or as a module. Choose "use VESA GTF for video timings" if you 235 or as a module. Choose "use VESA Generalized Timing Formula" if
221 need to maximize the capability of your display. To be on the 236 you need to maximize the capability of your display. To be on the
222 safe side, you can leave this unselected. 237 safe side, you can leave this unselected.
223 238
224 e. If you want a framebuffer console, enable it under "Console 239 e. If you want support for DDC/I2C probing (Plug and Play Displays),
240 set 'Enable DDC Support' to 'y'. To make this option appear, set
241 'use VESA Generalized Timing Formula' to 'y'.
242
243 f. If you want a framebuffer console, enable it under "Console
225 Drivers" 244 Drivers"
226 245
227 f. Compile your kernel. 246 g. Compile your kernel.
228 247
229 g. Load the driver as described in section D and E. 248 h. Load the driver as described in section D and E.
230 249
231 Optional:
232 h. If you are going to run XFree86 with its native drivers, the
233 standard XFree86 4.1.0 and 4.2.0 drivers should work as is.
234 However, there's a bug in the XFree86 i810 drivers. It attempts
235 to use XAA even when switched to the console. This will crash
236 your server. I have a fix at this site:
237
238 http://i810fb.sourceforge.net.
239
240 You can either use the patch, or just replace
241
242 /usr/X11R6/lib/modules/drivers/i810_drv.o
243
244 with the one provided at the website.
245
246 i. Try the DirectFB (http://www.directfb.org) + the i810 gfxdriver 250 i. Try the DirectFB (http://www.directfb.org) + the i810 gfxdriver
247 patch to see the chipset in action (or inaction :-). 251 patch to see the chipset in action (or inaction :-).
248 252