1 /* Machine specific code for the Acer n30, Acer N35, Navman PiN 570,
2 * Yakumo AlphaX and Airis NC05 PDAs.
3 *
4 * Copyright (c) 2003-2005 Simtec Electronics
5 * Ben Dooks <ben@simtec.co.uk>
6 *
7 * Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
8 *
9 * There is a wiki with more information about the n30 port at
10 * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License version 2 as
14 * published by the Free Software Foundation.
15 */
16
17 #include <linux/kernel.h>
18 #include <linux/types.h>
19
20 #include <linux/gpio_keys.h>
21 #include <linux/init.h>
22 #include <linux/gpio.h>
23 #include <linux/input.h>
24 #include <linux/interrupt.h>
25 #include <linux/platform_device.h>
26 #include <linux/serial_core.h>
27 #include <linux/timer.h>
28 #include <linux/io.h>
29
30 #include <mach/hardware.h>
31 #include <asm/irq.h>
32 #include <asm/mach-types.h>
33
34 #include <mach/fb.h>
35 #include <mach/leds-gpio.h>
36 #include <mach/regs-gpio.h>
37 #include <mach/regs-lcd.h>
38
39 #include <asm/mach/arch.h>
40 #include <asm/mach/irq.h>
41 #include <asm/mach/map.h>
42
43 #include <plat/iic.h>
44 #include <plat/regs-serial.h>
45
46 #include <plat/clock.h>
47 #include <plat/cpu.h>
48 #include <plat/devs.h>
49 #include <plat/s3c2410.h>
50 #include <plat/udc.h>
51
52 static struct map_desc n30_iodesc[] __initdata = {
53 /* nothing here yet */
54 };
55
56 static struct s3c2410_uartcfg n30_uartcfgs[] = {
57 /* Normal serial port */
58 [0] = {
59 .hwport = 0,
60 .flags = 0,
61 .ucon = 0x2c5,
62 .ulcon = 0x03,
63 .ufcon = 0x51,
64 },
65 /* IR port */
66 [1] = {
67 .hwport = 1,
68 .flags = 0,
69 .uart_flags = UPF_CONS_FLOW,
70 .ucon = 0x2c5,
71 .ulcon = 0x43,
72 .ufcon = 0x51,
73 },
74 /* On the N30 the bluetooth controller is connected here.
75 * On the N35 and variants the GPS receiver is connected here. */
76 [2] = {
77 .hwport = 2,
78 .flags = 0,
79 .ucon = 0x2c5,
80 .ulcon = 0x03,
81 .ufcon = 0x51,
82 },
83 };
84
85 static void n30_udc_pullup(enum s3c2410_udc_cmd_e cmd)
86 {
87 switch (cmd) {
88 case S3C2410_UDC_P_ENABLE :
89 s3c2410_gpio_setpin(S3C2410_GPB(3), 1);
90 break;
91 case S3C2410_UDC_P_DISABLE :
92 s3c2410_gpio_setpin(S3C2410_GPB(3), 0);
93 break;
94 case S3C2410_UDC_P_RESET :
95 break;
96 default:
97 break;
98 }
99 }
100
101 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
102 .udc_command = n30_udc_pullup,
103 .vbus_pin = S3C2410_GPG(1),
104 .vbus_pin_inverted = 0,
105 };
106
107 static struct gpio_keys_button n30_buttons[] = {
108 {
109 .gpio = S3C2410_GPF(0),
110 .code = KEY_POWER,
111 .desc = "Power",
112 .active_low = 0,
113 },
114 {
115 .gpio = S3C2410_GPG(9),
116 .code = KEY_UP,
117 .desc = "Thumbwheel Up",
118 .active_low = 0,
119 },
120 {
121 .gpio = S3C2410_GPG(8),
122 .code = KEY_DOWN,
123 .desc = "Thumbwheel Down",
124 .active_low = 0,
125 },
126 {
127 .gpio = S3C2410_GPG(7),
128 .code = KEY_ENTER,
129 .desc = "Thumbwheel Press",
130 .active_low = 0,
131 },
132 {
133 .gpio = S3C2410_GPF(7),
134 .code = KEY_HOMEPAGE,
135 .desc = "Home",
136 .active_low = 0,
137 },
138 {
139 .gpio = S3C2410_GPF(6),
140 .code = KEY_CALENDAR,
141 .desc = "Calendar",
142 .active_low = 0,
143 },
144 {
145 .gpio = S3C2410_GPF(5),
146 .code = KEY_ADDRESSBOOK,
147 .desc = "Contacts",
148 .active_low = 0,
149 },
150 {
151 .gpio = S3C2410_GPF(4),
152 .code = KEY_MAIL,
153 .desc = "Mail",
154 .active_low = 0,
155 },
156 };
157
158 static struct gpio_keys_platform_data n30_button_data = {
159 .buttons = n30_buttons,
160 .nbuttons = ARRAY_SIZE(n30_buttons),
161 };
162
163 static struct platform_device n30_button_device = {
164 .name = "gpio-keys",
165 .id = -1,
166 .dev = {
167 .platform_data = &n30_button_data,
168 }
169 };
170
171 static struct gpio_keys_button n35_buttons[] = {
172 {
173 .gpio = S3C2410_GPF(0),
174 .code = KEY_POWER,
175 .desc = "Power",
176 .active_low = 0,
177 },
178 {
179 .gpio = S3C2410_GPG(9),
180 .code = KEY_UP,
181 .desc = "Joystick Up",
182 .active_low = 0,
183 },
184 {
185 .gpio = S3C2410_GPG(8),
186 .code = KEY_DOWN,
187 .desc = "Joystick Down",
188 .active_low = 0,
189 },
190 {
191 .gpio = S3C2410_GPG(6),
192 .code = KEY_DOWN,
193 .desc = "Joystick Left",
194 .active_low = 0,
195 },
196 {
197 .gpio = S3C2410_GPG(5),
198 .code = KEY_DOWN,
199 .desc = "Joystick Right",
200 .active_low = 0,
201 },
202 {
203 .gpio = S3C2410_GPG(7),
204 .code = KEY_ENTER,
205 .desc = "Joystick Press",
206 .active_low = 0,
207 },
208 {
209 .gpio = S3C2410_GPF(7),
210 .code = KEY_HOMEPAGE,
211 .desc = "Home",
212 .active_low = 0,
213 },
214 {
215 .gpio = S3C2410_GPF(6),
216 .code = KEY_CALENDAR,
217 .desc = "Calendar",
218 .active_low = 0,
219 },
220 {
221 .gpio = S3C2410_GPF(5),
222 .code = KEY_ADDRESSBOOK,
223 .desc = "Contacts",
224 .active_low = 0,
225 },
226 {
227 .gpio = S3C2410_GPF(4),
228 .code = KEY_MAIL,
229 .desc = "Mail",
230 .active_low = 0,
231 },
232 {
233 .gpio = S3C2410_GPF(3),
234 .code = SW_RADIO,
235 .desc = "GPS Antenna",
236 .active_low = 0,
237 },
238 {
239 .gpio = S3C2410_GPG(2),
240 .code = SW_HEADPHONE_INSERT,
241 .desc = "Headphone",
242 .active_low = 0,
243 },
244 };
245
246 static struct gpio_keys_platform_data n35_button_data = {
247 .buttons = n35_buttons,
248 .nbuttons = ARRAY_SIZE(n35_buttons),
249 };
250
251 static struct platform_device n35_button_device = {
252 .name = "gpio-keys",
253 .id = -1,
254 .num_resources = 0,
255 .dev = {
256 .platform_data = &n35_button_data,
257 }
258 };
259
260 /* This is the bluetooth LED on the device. */
261 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
262 .name = "blue_led",
263 .gpio = S3C2410_GPG(6),
264 .def_trigger = "",
265 };
266
267 /* This LED is driven by the battery microcontroller, and is blinking
268 * red, blinking green or solid green when the battery is low,
269 * charging or full respectively. By driving GPD9 low, it's possible
270 * to force the LED to blink red, so call that warning LED. */
271 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
272 .name = "warning_led",
273 .flags = S3C24XX_LEDF_ACTLOW,
274 .gpio = S3C2410_GPD(9),
275 .def_trigger = "",
276 };
277
278 static struct platform_device n30_blue_led = {
279 .name = "s3c24xx_led",
280 .id = 1,
281 .dev = {
282 .platform_data = &n30_blue_led_pdata,
283 },
284 };
285
286 static struct platform_device n30_warning_led = {
287 .name = "s3c24xx_led",
288 .id = 2,
289 .dev = {
290 .platform_data = &n30_warning_led_pdata,
291 },
292 };
293
294 static struct s3c2410fb_display n30_display __initdata = {
295 .type = S3C2410_LCDCON1_TFT,
296 .width = 240,
297 .height = 320,
298 .pixclock = 170000,
299
300 .xres = 240,
301 .yres = 320,
302 .bpp = 16,
303 .left_margin = 3,
304 .right_margin = 40,
305 .hsync_len = 40,
306 .upper_margin = 2,
307 .lower_margin = 3,
308 .vsync_len = 2,
309
310 .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
311 };
312
313 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
314 .displays = &n30_display,
315 .num_displays = 1,
316 .default_display = 0,
317 .lpcsel = 0x06,
318 };
319
320 static struct platform_device *n30_devices[] __initdata = {
321 &s3c_device_lcd,
322 &s3c_device_wdt,
323 &s3c_device_i2c0,
324 &s3c_device_iis,
325 &s3c_device_usb,
326 &s3c_device_usbgadget,
327 &n30_button_device,
328 &n30_blue_led,
329 &n30_warning_led,
330 };
331
332 static struct platform_device *n35_devices[] __initdata = {
333 &s3c_device_lcd,
334 &s3c_device_wdt,
335 &s3c_device_i2c0,
336 &s3c_device_iis,
337 &s3c_device_usbgadget,
338 &n35_button_device,
339 };
340
341 static struct s3c2410_platform_i2c n30_i2ccfg = {
342 .flags = 0,
343 .slave_addr = 0x10,
344 .frequency = 10*1000,
345 };
346
347 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
348 * state so that we can boot Linux directly from flash. */
349 static void __init n30_hwinit(void)
350 {
351 /* GPA0-11 special functions -- unknown what they do
352 * GPA12 N30 special function -- unknown what it does
353 * N35/PiN output -- unknown what it does
354 *
355 * A12 is nGCS1 on the N30 and an output on the N35/PiN. I
356 * don't think it does anything useful on the N30, so I ought
357 * to make it an output there too since it always driven to 0
358 * as far as I can tell. */
359 if (machine_is_n30())
360 __raw_writel(0x007fffff, S3C2410_GPACON);
361 if (machine_is_n35())
362 __raw_writel(0x007fefff, S3C2410_GPACON);
363 __raw_writel(0x00000000, S3C2410_GPADAT);
364
365 /* GPB0 TOUT0 backlight level
366 * GPB1 output 1=backlight on
367 * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
368 * GPB3 output USB D+ pull up 0=disabled, 1=enabled
369 * GPB4 N30 output -- unknown function
370 * N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
371 * GPB5 output -- unknown function
372 * GPB6 input -- unknown function
373 * GPB7 output -- unknown function
374 * GPB8 output -- probably LCD driver enable
375 * GPB9 output -- probably LCD VSYNC driver enable
376 * GPB10 output -- probably LCD HSYNC driver enable
377 */
378 __raw_writel(0x00154556, S3C2410_GPBCON);
379 __raw_writel(0x00000750, S3C2410_GPBDAT);
380 __raw_writel(0x00000073, S3C2410_GPBUP);
381
382 /* GPC0 input RS232 DCD/DSR/RI
383 * GPC1 LCD
384 * GPC2 output RS232 DTR?
385 * GPC3 input RS232 DCD/DSR/RI
386 * GPC4 LCD
387 * GPC5 output 0=NAND write enabled, 1=NAND write protect
388 * GPC6 input -- unknown function
389 * GPC7 input charger status 0=charger connected
390 * this input can be triggered by power on the USB device
391 * port too, but will go back to disconnected soon after.
392 * GPC8 N30/N35 output -- unknown function, always driven to 1
393 * PiN input -- unknown function, always read as 1
394 * Make it an input with a pull up for all models.
395 * GPC9-15 LCD
396 */
397 __raw_writel(0xaaa80618, S3C2410_GPCCON);
398 __raw_writel(0x0000014c, S3C2410_GPCDAT);
399 __raw_writel(0x0000fef2, S3C2410_GPCUP);
400
401 /* GPD0 input -- unknown function
402 * GPD1-D7 LCD
403 * GPD8 N30 output -- unknown function
404 * N35/PiN output 1=GPS LED on
405 * GPD9 output 0=power led blinks red, 1=normal power led function
406 * GPD10 output -- unknown function
407 * GPD11-15 LCD drivers
408 */
409 __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
410 __raw_writel(0x00000601, S3C2410_GPDDAT);
411 __raw_writel(0x0000fbfe, S3C2410_GPDUP);
412
413 /* GPE0-4 I2S audio bus
414 * GPE5-10 SD/MMC bus
415 * E11-13 outputs -- unknown function, probably power management
416 * E14-15 I2C bus connected to the battery controller
417 */
418 __raw_writel(0xa56aaaaa, S3C2410_GPECON);
419 __raw_writel(0x0000efc5, S3C2410_GPEDAT);
420 __raw_writel(0x0000f81f, S3C2410_GPEUP);
421
422 /* GPF0 input 0=power button pressed
423 * GPF1 input SD/MMC switch 0=card present
424 * GPF2 N30 1=reset button pressed (inverted compared to the rest)
425 * N35/PiN 0=reset button pressed
426 * GPF3 N30/PiN input -- unknown function
427 * N35 input GPS antenna position, 0=antenna closed, 1=open
428 * GPF4 input 0=button 4 pressed
429 * GPF5 input 0=button 3 pressed
430 * GPF6 input 0=button 2 pressed
431 * GPF7 input 0=button 1 pressed
432 */
433 __raw_writel(0x0000aaaa, S3C2410_GPFCON);
434 __raw_writel(0x00000000, S3C2410_GPFDAT);
435 __raw_writel(0x000000ff, S3C2410_GPFUP);
436
437 /* GPG0 input RS232 DCD/DSR/RI
438 * GPG1 input 1=USB gadget port has power from a host
439 * GPG2 N30 input -- unknown function
440 * N35/PiN input 0=headphones plugged in, 1=not plugged in
441 * GPG3 N30 output -- unknown function
442 * N35/PiN input with unknown function
443 * GPG4 N30 output 0=MMC enabled, 1=MMC disabled
444 * GPG5 N30 output 0=BlueTooth chip disabled, 1=enabled
445 * N35/PiN input joystick right
446 * GPG6 N30 output 0=blue led on, 1=off
447 * N35/PiN input joystick left
448 * GPG7 input 0=thumbwheel pressed
449 * GPG8 input 0=thumbwheel down
450 * GPG9 input 0=thumbwheel up
451 * GPG10 input SD/MMC write protect switch
452 * GPG11 N30 input -- unknown function
453 * N35 output 0=GPS antenna powered, 1=not powered
454 * PiN output -- unknown function
455 * GPG12-15 touch screen functions
456 *
457 * The pullups differ between the models, so enable all
458 * pullups that are enabled on any of the models.
459 */
460 if (machine_is_n30())
461 __raw_writel(0xff0a956a, S3C2410_GPGCON);
462 if (machine_is_n35())
463 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
464 __raw_writel(0x0000e800, S3C2410_GPGDAT);
465 __raw_writel(0x0000f86f, S3C2410_GPGUP);
466
467 /* GPH0/1/2/3 RS232 serial port
468 * GPH4/5 IrDA serial port
469 * GPH6/7 N30 BlueTooth serial port
470 * N35/PiN GPS receiver
471 * GPH8 input -- unknown function
472 * GPH9 CLKOUT0 HCLK -- unknown use
473 * GPH10 CLKOUT1 FCLK -- unknown use
474 *
475 * The pull ups for H6/H7 are enabled on N30 but not on the
476 * N35/PiN. I suppose is useful for a budget model of the N30
477 * with no bluetooh. It doesn't hurt to have the pull ups
478 * enabled on the N35, so leave them enabled for all models.
479 */
480 __raw_writel(0x0028aaaa, S3C2410_GPHCON);
481 __raw_writel(0x000005ef, S3C2410_GPHDAT);
482 __raw_writel(0x0000063f, S3C2410_GPHUP);
483 }
484
485 static void __init n30_map_io(void)
486 {
487 s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
488 n30_hwinit();
489 s3c24xx_init_clocks(0);
490 s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
491 }
492
493 static void __init n30_init_irq(void)
494 {
495 s3c24xx_init_irq();
496 }
497
498 /* GPB3 is the line that controls the pull-up for the USB D+ line */
499
500 static void __init n30_init(void)
501 {
502 s3c24xx_fb_set_platdata(&n30_fb_info);
503 s3c_device_i2c0.dev.platform_data = &n30_i2ccfg;
504 s3c24xx_udc_set_platdata(&n30_udc_cfg);
505
506 /* Turn off suspend on both USB ports, and switch the
507 * selectable USB port to USB device mode. */
508
509 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
510 S3C2410_MISCCR_USBSUSPND0 |
511 S3C2410_MISCCR_USBSUSPND1, 0x0);
512
513 if (machine_is_n30()) {
514 /* Turn off suspend on both USB ports, and switch the
515 * selectable USB port to USB device mode. */
516 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
517 S3C2410_MISCCR_USBSUSPND0 |
518 S3C2410_MISCCR_USBSUSPND1, 0x0);
519
520 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
521 }
522
523 if (machine_is_n35()) {
524 /* Turn off suspend and switch the selectable USB port
525 * to USB device mode. Turn on suspend for the host
526 * port since it is not connected on the N35.
527 *
528 * Actually, the host port is available at some pads
529 * on the back of the device, so it would actually be
530 * possible to add a USB device inside the N35 if you
531 * are willing to do some hardware modifications. */
532 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
533 S3C2410_MISCCR_USBSUSPND0 |
534 S3C2410_MISCCR_USBSUSPND1,
535 S3C2410_MISCCR_USBSUSPND1);
536
537 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
538 }
539 }
540
541 MACHINE_START(N30, "Acer-N30")
542 /* Maintainer: Christer Weinigel <christer@weinigel.se>,
543 Ben Dooks <ben-linux@fluff.org>
544 */
545 .phys_io = S3C2410_PA_UART,
546 .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
547 .boot_params = S3C2410_SDRAM_PA + 0x100,
548 .timer = &s3c24xx_timer,
549 .init_machine = n30_init,
550 .init_irq = n30_init_irq,
551 .map_io = n30_map_io,
552 MACHINE_END
553
554 MACHINE_START(N35, "Acer-N35")
555 /* Maintainer: Christer Weinigel <christer@weinigel.se>
556 */
557 .phys_io = S3C2410_PA_UART,
558 .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
559 .boot_params = S3C2410_SDRAM_PA + 0x100,
560 .timer = &s3c24xx_timer,
561 .init_machine = n30_init,
562 .init_irq = n30_init_irq,
563 .map_io = n30_map_io,
564 MACHINE_END
565
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