Commit | Line | Data |
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b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
70e84049 MOS |
2 | # |
3 | # For a description of the syntax of this configuration file, | |
cd238eff | 4 | # see Documentation/kbuild/kconfig-language.rst. |
70e84049 MOS |
5 | # |
6 | # Auxiliary display drivers configuration. | |
7 | # | |
8 | ||
f5920969 | 9 | menuconfig AUXDISPLAY |
f5920969 | 10 | bool "Auxiliary Display support" |
a7f7f624 | 11 | help |
06bfb7eb JE |
12 | Say Y here to get to see options for auxiliary display drivers. |
13 | This option alone does not add any kernel code. | |
14 | ||
15 | If you say N, all options in this submenu will be skipped and disabled. | |
f5920969 | 16 | |
c0aa24ba | 17 | if AUXDISPLAY |
70e84049 | 18 | |
718e05ed LP |
19 | config CHARLCD |
20 | tristate "Character LCD core support" if COMPILE_TEST | |
21 | help | |
22 | This is the base system for character-based LCD displays. | |
23 | It makes no sense to have this alone, you select your display driver | |
24 | and if it needs the charlcd core, it will select it automatically. | |
25 | This is some character LCD core interface that multiple drivers can | |
26 | use. | |
27 | ||
7e76aece GU |
28 | config LINEDISP |
29 | tristate "Character line display core support" if COMPILE_TEST | |
30 | help | |
31 | This is the core support for single-line character displays, to be | |
32 | selected by drivers that use it. | |
33 | ||
718e05ed LP |
34 | config HD44780_COMMON |
35 | tristate "Common functions for HD44780 (and compatibles) LCD displays" if COMPILE_TEST | |
ffdf726d | 36 | select CHARLCD |
718e05ed LP |
37 | help |
38 | This is a module with the common symbols for HD44780 (and compatibles) | |
39 | displays. This is the code that multiple other modules use. It is not | |
40 | useful alone. If you have some sort of HD44780 compatible display, | |
41 | you very likely use this. It is selected automatically by selecting | |
42 | your concrete display. | |
43 | ||
d47d8836 GU |
44 | config HD44780 |
45 | tristate "HD44780 Character LCD support" | |
46 | depends on GPIOLIB || COMPILE_TEST | |
718e05ed | 47 | select HD44780_COMMON |
a7f7f624 | 48 | help |
d47d8836 GU |
49 | Enable support for Character LCDs using a HD44780 controller. |
50 | The LCD is accessible through the /dev/lcd char device (10, 156). | |
51 | This code can either be compiled as a module, or linked into the | |
52 | kernel and started at boot. | |
53 | If you don't understand what all this is about, say N. | |
54 | ||
70e84049 MOS |
55 | config KS0108 |
56 | tristate "KS0108 LCD Controller" | |
57 | depends on PARPORT_PC | |
58 | default n | |
a7f7f624 | 59 | help |
70e84049 MOS |
60 | If you have a LCD controlled by one or more KS0108 |
61 | controllers, say Y. You will need also another more specific | |
62 | driver for your LCD. | |
63 | ||
64 | Depends on Parallel Port support. If you say Y at | |
65 | parport, you will be able to compile this as a module (M) | |
66 | and built-in as well (Y). | |
67 | ||
68 | To compile this as a module, choose M here: | |
69 | the module will be called ks0108. | |
70 | ||
71 | If unsure, say N. | |
72 | ||
73 | config KS0108_PORT | |
74 | hex "Parallel port where the LCD is connected" | |
75 | depends on KS0108 | |
76 | default 0x378 | |
a7f7f624 | 77 | help |
70e84049 MOS |
78 | The address of the parallel port where the LCD is connected. |
79 | ||
80 | The first standard parallel port address is 0x378. | |
81 | The second standard parallel port address is 0x278. | |
82 | The third standard parallel port address is 0x3BC. | |
83 | ||
84 | You can specify a different address if you need. | |
85 | ||
86 | If you don't know what I'm talking about, load the parport module, | |
87 | and execute "dmesg" or "cat /proc/ioports". You can see there how | |
88 | many parallel ports are present and which address each one has. | |
89 | ||
90 | Usually you only need to use 0x378. | |
91 | ||
92 | If you compile this as a module, you can still override this | |
93 | using the module parameters. | |
94 | ||
95 | config KS0108_DELAY | |
96 | int "Delay between each control writing (microseconds)" | |
97 | depends on KS0108 | |
98 | default "2" | |
a7f7f624 | 99 | help |
70e84049 MOS |
100 | Amount of time the ks0108 should wait between each control write |
101 | to the parallel port. | |
102 | ||
450c622e | 103 | If your LCD seems to miss random writings, increment this. |
70e84049 MOS |
104 | |
105 | If you don't know what I'm talking about, ignore it. | |
106 | ||
107 | If you compile this as a module, you can still override this | |
108 | value using the module parameters. | |
109 | ||
110 | config CFAG12864B | |
111 | tristate "CFAG12864B LCD" | |
112 | depends on X86 | |
113 | depends on FB | |
114 | depends on KS0108 | |
bfeeffbb AO |
115 | select FB_SYS_FILLRECT |
116 | select FB_SYS_COPYAREA | |
117 | select FB_SYS_IMAGEBLIT | |
118 | select FB_SYS_FOPS | |
70e84049 | 119 | default n |
a7f7f624 | 120 | help |
70e84049 MOS |
121 | If you have a Crystalfontz 128x64 2-color LCD, cfag12864b Series, |
122 | say Y. You also need the ks0108 LCD Controller driver. | |
123 | ||
124 | For help about how to wire your LCD to the parallel port, | |
76b5a6e8 | 125 | check Documentation/admin-guide/auxdisplay/cfag12864b.rst |
70e84049 MOS |
126 | |
127 | Depends on the x86 arch and the framebuffer support. | |
128 | ||
129 | The LCD framebuffer driver can be attached to a console. | |
130 | It will work fine. However, you can't attach it to the fbdev driver | |
131 | of the xorg server. | |
132 | ||
133 | To compile this as a module, choose M here: | |
134 | the modules will be called cfag12864b and cfag12864bfb. | |
135 | ||
136 | If unsure, say N. | |
137 | ||
138 | config CFAG12864B_RATE | |
d568bbd2 | 139 | int "Refresh rate (hertz)" |
70e84049 MOS |
140 | depends on CFAG12864B |
141 | default "20" | |
a7f7f624 | 142 | help |
70e84049 MOS |
143 | Refresh rate of the LCD. |
144 | ||
145 | As the LCD is not memory mapped, the driver has to make the work by | |
146 | software. This means you should be careful setting this value higher. | |
147 | If your CPUs are really slow or you feel the system is slowed down, | |
148 | decrease the value. | |
149 | ||
150 | Be careful modifying this value to a very high value: | |
151 | You can freeze the computer, or the LCD maybe can't draw as fast as you | |
152 | are requesting. | |
153 | ||
154 | If you don't know what I'm talking about, ignore it. | |
155 | ||
156 | If you compile this as a module, you can still override this | |
157 | value using the module parameters. | |
f5920969 | 158 | |
0cad855f PB |
159 | config IMG_ASCII_LCD |
160 | tristate "Imagination Technologies ASCII LCD Display" | |
141cbfba | 161 | depends on HAS_IOMEM |
0186a092 | 162 | default y if MIPS_MALTA |
aa9d87bd | 163 | select MFD_SYSCON |
7e76aece | 164 | select LINEDISP |
0cad855f PB |
165 | help |
166 | Enable this to support the simple ASCII LCD displays found on | |
167 | development boards such as the MIPS Boston, MIPS Malta & MIPS SEAD3 | |
168 | from Imagination Technologies. | |
169 | ||
8992da44 RG |
170 | config HT16K33 |
171 | tristate "Holtek Ht16K33 LED controller with keyscan" | |
5d343f7c | 172 | depends on FB && I2C && INPUT |
31114fa9 | 173 | select FB_SYS_FOPS |
546cf3ef RD |
174 | select FB_SYS_FILLRECT |
175 | select FB_SYS_COPYAREA | |
176 | select FB_SYS_IMAGEBLIT | |
8992da44 RG |
177 | select INPUT_MATRIXKMAP |
178 | select FB_BACKLIGHT | |
c223d9c6 GU |
179 | select NEW_LEDS |
180 | select LEDS_CLASS | |
a0428724 | 181 | select LINEDISP |
8992da44 RG |
182 | help |
183 | Say yes here to add support for Holtek HT16K33, RAM mapping 16*8 | |
184 | LED controller driver with keyscan. | |
185 | ||
8c9108d0 LP |
186 | config LCD2S |
187 | tristate "lcd2s 20x4 character display over I2C console" | |
188 | depends on I2C | |
189 | select CHARLCD | |
190 | help | |
191 | This is a driver that lets you use the lcd2s 20x4 character display | |
192 | from Modtronix engineering as a console output device. The display | |
193 | is a simple single color character display. You have to connect it | |
194 | to an I2C bus. | |
195 | ||
00846a44 AS |
196 | config ARM_CHARLCD |
197 | bool "ARM Ltd. Character LCD Driver" | |
198 | depends on PLAT_VERSATILE | |
199 | help | |
200 | This is a driver for the character LCD found on the ARM Ltd. | |
201 | Versatile and RealView Platform Baseboards. It doesn't do | |
202 | very much more than display the text "ARM Linux" on the first | |
203 | line and the Linux version on the second line, but that's | |
204 | still useful. | |
205 | ||
24c764ab | 206 | menuconfig PARPORT_PANEL |
51c1e9b5 AS |
207 | tristate "Parallel port LCD/Keypad Panel support" |
208 | depends on PARPORT | |
718e05ed | 209 | select HD44780_COMMON |
a7f7f624 | 210 | help |
51c1e9b5 AS |
211 | Say Y here if you have an HD44780 or KS-0074 LCD connected to your |
212 | parallel port. This driver also features 4 and 6-key keypads. The LCD | |
213 | is accessible through the /dev/lcd char device (10, 156), and the | |
214 | keypad through /dev/keypad (10, 185). This code can either be | |
215 | compiled as a module, or linked into the kernel and started at boot. | |
216 | If you don't understand what all this is about, say N. | |
217 | ||
24c764ab | 218 | if PARPORT_PANEL |
51c1e9b5 AS |
219 | |
220 | config PANEL_PARPORT | |
221 | int "Default parallel port number (0=LPT1)" | |
222 | range 0 255 | |
223 | default "0" | |
a7f7f624 | 224 | help |
51c1e9b5 AS |
225 | This is the index of the parallel port the panel is connected to. One |
226 | driver instance only supports one parallel port, so if your keypad | |
227 | and LCD are connected to two separate ports, you have to start two | |
228 | modules with different arguments. Numbering starts with '0' for LPT1, | |
229 | and so on. | |
230 | ||
231 | config PANEL_PROFILE | |
232 | int "Default panel profile (0-5, 0=custom)" | |
233 | range 0 5 | |
234 | default "5" | |
a7f7f624 | 235 | help |
51c1e9b5 AS |
236 | To ease configuration, the driver supports different configuration |
237 | profiles for past and recent wirings. These profiles can also be | |
238 | used to define an approximative configuration, completed by a few | |
239 | other options. Here are the profiles : | |
240 | ||
241 | 0 = custom (see further) | |
242 | 1 = 2x16 parallel LCD, old keypad | |
243 | 2 = 2x16 serial LCD (KS-0074), new keypad | |
244 | 3 = 2x16 parallel LCD (Hantronix), no keypad | |
245 | 4 = 2x16 parallel LCD (Nexcom NSA1045) with Nexcom's keypad | |
246 | 5 = 2x40 parallel LCD (old one), with old keypad | |
247 | ||
248 | Custom configurations allow you to define how your display is | |
249 | wired to the parallel port, and how it works. This is only intended | |
250 | for experts. | |
251 | ||
252 | config PANEL_KEYPAD | |
253 | depends on PANEL_PROFILE="0" | |
254 | int "Keypad type (0=none, 1=old 6 keys, 2=new 6 keys, 3=Nexcom 4 keys)" | |
255 | range 0 3 | |
256 | default 0 | |
a7f7f624 | 257 | help |
51c1e9b5 AS |
258 | This enables and configures a keypad connected to the parallel port. |
259 | The keys will be read from character device 10,185. Valid values are : | |
260 | ||
261 | 0 : do not enable this driver | |
262 | 1 : old 6 keys keypad | |
263 | 2 : new 6 keys keypad, as used on the server at www.ant-computing.com | |
264 | 3 : Nexcom NSA1045's 4 keys keypad | |
265 | ||
266 | New profiles can be described in the driver source. The driver also | |
267 | supports simultaneous keys pressed when the keypad supports them. | |
268 | ||
269 | config PANEL_LCD | |
270 | depends on PANEL_PROFILE="0" | |
271 | int "LCD type (0=none, 1=custom, 2=old //, 3=ks0074, 4=hantronix, 5=Nexcom)" | |
272 | range 0 5 | |
273 | default 0 | |
a7f7f624 | 274 | help |
51c1e9b5 AS |
275 | This enables and configures an LCD connected to the parallel port. |
276 | The driver includes an interpreter for escape codes starting with | |
277 | '\e[L' which are specific to the LCD, and a few ANSI codes. The | |
278 | driver will be registered as character device 10,156, usually | |
279 | under the name '/dev/lcd'. There are a total of 6 supported types : | |
280 | ||
281 | 0 : do not enable the driver | |
282 | 1 : custom configuration and wiring (see further) | |
283 | 2 : 2x16 & 2x40 parallel LCD (old wiring) | |
284 | 3 : 2x16 serial LCD (KS-0074 based) | |
285 | 4 : 2x16 parallel LCD (Hantronix wiring) | |
286 | 5 : 2x16 parallel LCD (Nexcom wiring) | |
287 | ||
288 | When type '1' is specified, other options will appear to configure | |
289 | more precise aspects (wiring, dimensions, protocol, ...). Please note | |
290 | that those values changed from the 2.4 driver for better consistency. | |
291 | ||
292 | config PANEL_LCD_HEIGHT | |
293 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" | |
294 | int "Number of lines on the LCD (1-2)" | |
295 | range 1 2 | |
296 | default 2 | |
a7f7f624 | 297 | help |
51c1e9b5 AS |
298 | This is the number of visible character lines on the LCD in custom profile. |
299 | It can either be 1 or 2. | |
300 | ||
301 | config PANEL_LCD_WIDTH | |
302 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" | |
303 | int "Number of characters per line on the LCD (1-40)" | |
304 | range 1 40 | |
305 | default 40 | |
a7f7f624 | 306 | help |
51c1e9b5 AS |
307 | This is the number of characters per line on the LCD in custom profile. |
308 | Common values are 16,20,24,40. | |
309 | ||
310 | config PANEL_LCD_BWIDTH | |
311 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" | |
312 | int "Internal LCD line width (1-40, 40 by default)" | |
313 | range 1 40 | |
314 | default 40 | |
a7f7f624 | 315 | help |
51c1e9b5 AS |
316 | Most LCDs use a standard controller which supports hardware lines of 40 |
317 | characters, although sometimes only 16, 20 or 24 of them are really wired | |
318 | to the terminal. This results in some non-visible but addressable characters, | |
319 | and is the case for most parallel LCDs. Other LCDs, and some serial ones, | |
320 | however, use the same line width internally as what is visible. The KS0074 | |
321 | for example, uses 16 characters per line for 16 visible characters per line. | |
322 | ||
323 | This option lets you configure the value used by your LCD in 'custom' profile. | |
324 | If you don't know, put '40' here. | |
325 | ||
326 | config PANEL_LCD_HWIDTH | |
327 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" | |
328 | int "Hardware LCD line width (1-64, 64 by default)" | |
329 | range 1 64 | |
330 | default 64 | |
a7f7f624 | 331 | help |
51c1e9b5 AS |
332 | Most LCDs use a single address bit to differentiate line 0 and line 1. Since |
333 | some of them need to be able to address 40 chars with the lower bits, they | |
334 | often use the immediately superior power of 2, which is 64, to address the | |
335 | next line. | |
336 | ||
337 | If you don't know what your LCD uses, in doubt let 16 here for a 2x16, and | |
338 | 64 here for a 2x40. | |
339 | ||
340 | config PANEL_LCD_CHARSET | |
341 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" | |
342 | int "LCD character set (0=normal, 1=KS0074)" | |
343 | range 0 1 | |
344 | default 0 | |
a7f7f624 | 345 | help |
51c1e9b5 AS |
346 | Some controllers such as the KS0074 use a somewhat strange character set |
347 | where many symbols are at unusual places. The driver knows how to map | |
348 | 'standard' ASCII characters to the character sets used by these controllers. | |
349 | Valid values are : | |
350 | ||
351 | 0 : normal (untranslated) character set | |
352 | 1 : KS0074 character set | |
353 | ||
354 | If you don't know, use the normal one (0). | |
355 | ||
356 | config PANEL_LCD_PROTO | |
357 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" | |
358 | int "LCD communication mode (0=parallel 8 bits, 1=serial)" | |
359 | range 0 1 | |
360 | default 0 | |
a7f7f624 | 361 | help |
51c1e9b5 AS |
362 | This driver now supports any serial or parallel LCD wired to a parallel |
363 | port. But before assigning signals, the driver needs to know if it will | |
364 | be driving a serial LCD or a parallel one. Serial LCDs only use 2 wires | |
365 | (SDA/SCL), while parallel ones use 2 or 3 wires for the control signals | |
366 | (E, RS, sometimes RW), and 4 or 8 for the data. Use 0 here for a 8 bits | |
367 | parallel LCD, and 1 for a serial LCD. | |
368 | ||
369 | config PANEL_LCD_PIN_E | |
370 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO="0" | |
d568bbd2 | 371 | int "Parallel port pin number & polarity connected to the LCD E signal (-17...17) " |
51c1e9b5 AS |
372 | range -17 17 |
373 | default 14 | |
a7f7f624 | 374 | help |
51c1e9b5 AS |
375 | This describes the number of the parallel port pin to which the LCD 'E' |
376 | signal has been connected. It can be : | |
377 | ||
378 | 0 : no connection (eg: connected to ground) | |
379 | 1..17 : directly connected to any of these pins on the DB25 plug | |
380 | -1..-17 : connected to the same pin through an inverter (eg: transistor). | |
381 | ||
382 | Default for the 'E' pin in custom profile is '14' (AUTOFEED). | |
383 | ||
384 | config PANEL_LCD_PIN_RS | |
385 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO="0" | |
d568bbd2 | 386 | int "Parallel port pin number & polarity connected to the LCD RS signal (-17...17) " |
51c1e9b5 AS |
387 | range -17 17 |
388 | default 17 | |
a7f7f624 | 389 | help |
51c1e9b5 AS |
390 | This describes the number of the parallel port pin to which the LCD 'RS' |
391 | signal has been connected. It can be : | |
392 | ||
393 | 0 : no connection (eg: connected to ground) | |
394 | 1..17 : directly connected to any of these pins on the DB25 plug | |
395 | -1..-17 : connected to the same pin through an inverter (eg: transistor). | |
396 | ||
397 | Default for the 'RS' pin in custom profile is '17' (SELECT IN). | |
398 | ||
399 | config PANEL_LCD_PIN_RW | |
400 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO="0" | |
d568bbd2 | 401 | int "Parallel port pin number & polarity connected to the LCD RW signal (-17...17) " |
51c1e9b5 AS |
402 | range -17 17 |
403 | default 16 | |
a7f7f624 | 404 | help |
51c1e9b5 AS |
405 | This describes the number of the parallel port pin to which the LCD 'RW' |
406 | signal has been connected. It can be : | |
407 | ||
408 | 0 : no connection (eg: connected to ground) | |
409 | 1..17 : directly connected to any of these pins on the DB25 plug | |
410 | -1..-17 : connected to the same pin through an inverter (eg: transistor). | |
411 | ||
412 | Default for the 'RW' pin in custom profile is '16' (INIT). | |
413 | ||
414 | config PANEL_LCD_PIN_SCL | |
415 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO!="0" | |
d568bbd2 | 416 | int "Parallel port pin number & polarity connected to the LCD SCL signal (-17...17) " |
51c1e9b5 AS |
417 | range -17 17 |
418 | default 1 | |
a7f7f624 | 419 | help |
51c1e9b5 AS |
420 | This describes the number of the parallel port pin to which the serial |
421 | LCD 'SCL' signal has been connected. It can be : | |
422 | ||
423 | 0 : no connection (eg: connected to ground) | |
424 | 1..17 : directly connected to any of these pins on the DB25 plug | |
425 | -1..-17 : connected to the same pin through an inverter (eg: transistor). | |
426 | ||
427 | Default for the 'SCL' pin in custom profile is '1' (STROBE). | |
428 | ||
429 | config PANEL_LCD_PIN_SDA | |
430 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" && PANEL_LCD_PROTO!="0" | |
d568bbd2 | 431 | int "Parallel port pin number & polarity connected to the LCD SDA signal (-17...17) " |
51c1e9b5 AS |
432 | range -17 17 |
433 | default 2 | |
a7f7f624 | 434 | help |
51c1e9b5 AS |
435 | This describes the number of the parallel port pin to which the serial |
436 | LCD 'SDA' signal has been connected. It can be : | |
437 | ||
438 | 0 : no connection (eg: connected to ground) | |
439 | 1..17 : directly connected to any of these pins on the DB25 plug | |
440 | -1..-17 : connected to the same pin through an inverter (eg: transistor). | |
441 | ||
442 | Default for the 'SDA' pin in custom profile is '2' (D0). | |
443 | ||
444 | config PANEL_LCD_PIN_BL | |
445 | depends on PANEL_PROFILE="0" && PANEL_LCD="1" | |
d568bbd2 | 446 | int "Parallel port pin number & polarity connected to the LCD backlight signal (-17...17) " |
51c1e9b5 AS |
447 | range -17 17 |
448 | default 0 | |
a7f7f624 | 449 | help |
51c1e9b5 | 450 | This describes the number of the parallel port pin to which the LCD 'BL' signal |
d568bbd2 | 451 | has been connected. It can be : |
51c1e9b5 AS |
452 | |
453 | 0 : no connection (eg: connected to ground) | |
454 | 1..17 : directly connected to any of these pins on the DB25 plug | |
455 | -1..-17 : connected to the same pin through an inverter (eg: transistor). | |
456 | ||
457 | Default for the 'BL' pin in custom profile is '0' (uncontrolled). | |
458 | ||
24c764ab MR |
459 | endif # PARPORT_PANEL |
460 | ||
51c1e9b5 AS |
461 | config PANEL_CHANGE_MESSAGE |
462 | bool "Change LCD initialization message ?" | |
24c764ab | 463 | depends on CHARLCD |
51c1e9b5 | 464 | default "n" |
a7f7f624 | 465 | help |
51c1e9b5 AS |
466 | This allows you to replace the boot message indicating the kernel version |
467 | and the driver version with a custom message. This is useful on appliances | |
468 | where a simple 'Starting system' message can be enough to stop a customer | |
469 | from worrying. | |
470 | ||
471 | If you say 'Y' here, you'll be able to choose a message yourself. Otherwise, | |
472 | say 'N' and keep the default message with the version. | |
473 | ||
474 | config PANEL_BOOT_MESSAGE | |
475 | depends on PANEL_CHANGE_MESSAGE="y" | |
476 | string "New initialization message" | |
477 | default "" | |
a7f7f624 | 478 | help |
51c1e9b5 AS |
479 | This allows you to replace the boot message indicating the kernel version |
480 | and the driver version with a custom message. This is useful on appliances | |
481 | where a simple 'Starting system' message can be enough to stop a customer | |
482 | from worrying. | |
483 | ||
484 | An empty message will only clear the display at driver init time. Any other | |
485 | printf()-formatted message is valid with newline and escape codes. | |
486 | ||
cc5d04d8 MR |
487 | choice |
488 | prompt "Backlight initial state" | |
489 | default CHARLCD_BL_FLASH | |
a7f7f624 | 490 | help |
ba2c1340 MR |
491 | Select the initial backlight state on boot or module load. |
492 | ||
493 | Previously, there was no option for this: the backlight flashed | |
494 | briefly on init. Now you can also turn it off/on. | |
cc5d04d8 MR |
495 | |
496 | config CHARLCD_BL_OFF | |
497 | bool "Off" | |
498 | help | |
499 | Backlight is initially turned off | |
500 | ||
501 | config CHARLCD_BL_ON | |
502 | bool "On" | |
503 | help | |
504 | Backlight is initially turned on | |
505 | ||
506 | config CHARLCD_BL_FLASH | |
507 | bool "Flash" | |
508 | help | |
509 | Backlight is flashed briefly on init | |
510 | ||
511 | endchoice | |
512 | ||
24c764ab MR |
513 | endif # AUXDISPLAY |
514 | ||
515 | config PANEL | |
516 | tristate "Parallel port LCD/Keypad Panel support (OLD OPTION)" | |
517 | depends on PARPORT | |
518 | select AUXDISPLAY | |
519 | select PARPORT_PANEL |