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