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/serial_s3c.h>
28 #include <linux/timer.h>
29 #include <linux/io.h>
30 #include <linux/mmc/host.h>
31
32 #include <mach/hardware.h>
33 #include <asm/irq.h>
34 #include <asm/mach-types.h>
35
36 #include <mach/fb.h>
37 #include <linux/platform_data/leds-s3c24xx.h>
38 #include <mach/regs-gpio.h>
39 #include <mach/regs-lcd.h>
40 #include <mach/gpio-samsung.h>
41
42 #include <asm/mach/arch.h>
43 #include <asm/mach/irq.h>
44 #include <asm/mach/map.h>
45
46 #include <linux/platform_data/i2c-s3c2410.h>
47
48 #include <plat/cpu.h>
49 #include <plat/devs.h>
50 #include <linux/platform_data/mmc-s3cmci.h>
51 #include <linux/platform_data/usb-s3c2410_udc.h>
52 #include <plat/samsung-time.h>
53
54 #include "common.h"
55
56 static struct map_desc n30_iodesc[] __initdata = {
57 /* nothing here yet */
58 };
59
60 static struct s3c2410_uartcfg n30_uartcfgs[] = {
61 /* Normal serial port */
62 [0] = {
63 .hwport = 0,
64 .flags = 0,
65 .ucon = 0x2c5,
66 .ulcon = 0x03,
67 .ufcon = 0x51,
68 },
69 /* IR port */
70 [1] = {
71 .hwport = 1,
72 .flags = 0,
73 .uart_flags = UPF_CONS_FLOW,
74 .ucon = 0x2c5,
75 .ulcon = 0x43,
76 .ufcon = 0x51,
77 },
78 /* On the N30 the bluetooth controller is connected here.
79 * On the N35 and variants the GPS receiver is connected here. */
80 [2] = {
81 .hwport = 2,
82 .flags = 0,
83 .ucon = 0x2c5,
84 .ulcon = 0x03,
85 .ufcon = 0x51,
86 },
87 };
88
89 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
90 .vbus_pin = S3C2410_GPG(1),
91 .vbus_pin_inverted = 0,
92 .pullup_pin = S3C2410_GPB(3),
93 };
94
95 static struct gpio_keys_button n30_buttons[] = {
96 {
97 .gpio = S3C2410_GPF(0),
98 .code = KEY_POWER,
99 .desc = "Power",
100 .active_low = 0,
101 },
102 {
103 .gpio = S3C2410_GPG(9),
104 .code = KEY_UP,
105 .desc = "Thumbwheel Up",
106 .active_low = 0,
107 },
108 {
109 .gpio = S3C2410_GPG(8),
110 .code = KEY_DOWN,
111 .desc = "Thumbwheel Down",
112 .active_low = 0,
113 },
114 {
115 .gpio = S3C2410_GPG(7),
116 .code = KEY_ENTER,
117 .desc = "Thumbwheel Press",
118 .active_low = 0,
119 },
120 {
121 .gpio = S3C2410_GPF(7),
122 .code = KEY_HOMEPAGE,
123 .desc = "Home",
124 .active_low = 0,
125 },
126 {
127 .gpio = S3C2410_GPF(6),
128 .code = KEY_CALENDAR,
129 .desc = "Calendar",
130 .active_low = 0,
131 },
132 {
133 .gpio = S3C2410_GPF(5),
134 .code = KEY_ADDRESSBOOK,
135 .desc = "Contacts",
136 .active_low = 0,
137 },
138 {
139 .gpio = S3C2410_GPF(4),
140 .code = KEY_MAIL,
141 .desc = "Mail",
142 .active_low = 0,
143 },
144 };
145
146 static struct gpio_keys_platform_data n30_button_data = {
147 .buttons = n30_buttons,
148 .nbuttons = ARRAY_SIZE(n30_buttons),
149 };
150
151 static struct platform_device n30_button_device = {
152 .name = "gpio-keys",
153 .id = -1,
154 .dev = {
155 .platform_data = &n30_button_data,
156 }
157 };
158
159 static struct gpio_keys_button n35_buttons[] = {
160 {
161 .gpio = S3C2410_GPF(0),
162 .code = KEY_POWER,
163 .type = EV_PWR,
164 .desc = "Power",
165 .active_low = 0,
166 .wakeup = 1,
167 },
168 {
169 .gpio = S3C2410_GPG(9),
170 .code = KEY_UP,
171 .desc = "Joystick Up",
172 .active_low = 0,
173 },
174 {
175 .gpio = S3C2410_GPG(8),
176 .code = KEY_DOWN,
177 .desc = "Joystick Down",
178 .active_low = 0,
179 },
180 {
181 .gpio = S3C2410_GPG(6),
182 .code = KEY_DOWN,
183 .desc = "Joystick Left",
184 .active_low = 0,
185 },
186 {
187 .gpio = S3C2410_GPG(5),
188 .code = KEY_DOWN,
189 .desc = "Joystick Right",
190 .active_low = 0,
191 },
192 {
193 .gpio = S3C2410_GPG(7),
194 .code = KEY_ENTER,
195 .desc = "Joystick Press",
196 .active_low = 0,
197 },
198 {
199 .gpio = S3C2410_GPF(7),
200 .code = KEY_HOMEPAGE,
201 .desc = "Home",
202 .active_low = 0,
203 },
204 {
205 .gpio = S3C2410_GPF(6),
206 .code = KEY_CALENDAR,
207 .desc = "Calendar",
208 .active_low = 0,
209 },
210 {
211 .gpio = S3C2410_GPF(5),
212 .code = KEY_ADDRESSBOOK,
213 .desc = "Contacts",
214 .active_low = 0,
215 },
216 {
217 .gpio = S3C2410_GPF(4),
218 .code = KEY_MAIL,
219 .desc = "Mail",
220 .active_low = 0,
221 },
222 {
223 .gpio = S3C2410_GPF(3),
224 .code = SW_RADIO,
225 .desc = "GPS Antenna",
226 .active_low = 0,
227 },
228 {
229 .gpio = S3C2410_GPG(2),
230 .code = SW_HEADPHONE_INSERT,
231 .desc = "Headphone",
232 .active_low = 0,
233 },
234 };
235
236 static struct gpio_keys_platform_data n35_button_data = {
237 .buttons = n35_buttons,
238 .nbuttons = ARRAY_SIZE(n35_buttons),
239 };
240
241 static struct platform_device n35_button_device = {
242 .name = "gpio-keys",
243 .id = -1,
244 .num_resources = 0,
245 .dev = {
246 .platform_data = &n35_button_data,
247 }
248 };
249
250 /* This is the bluetooth LED on the device. */
251 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
252 .name = "blue_led",
253 .gpio = S3C2410_GPG(6),
254 .def_trigger = "",
255 };
256
257 /* This is the blue LED on the device. Originally used to indicate GPS activity
258 * by flashing. */
259 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
260 .name = "blue_led",
261 .gpio = S3C2410_GPD(8),
262 .def_trigger = "",
263 };
264
265 /* This LED is driven by the battery microcontroller, and is blinking
266 * red, blinking green or solid green when the battery is low,
267 * charging or full respectively. By driving GPD9 low, it's possible
268 * to force the LED to blink red, so call that warning LED. */
269 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
270 .name = "warning_led",
271 .flags = S3C24XX_LEDF_ACTLOW,
272 .gpio = S3C2410_GPD(9),
273 .def_trigger = "",
274 };
275
276 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
277 .name = "warning_led",
278 .flags = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
279 .gpio = S3C2410_GPD(9),
280 .def_trigger = "",
281 };
282
283 static struct platform_device n30_blue_led = {
284 .name = "s3c24xx_led",
285 .id = 1,
286 .dev = {
287 .platform_data = &n30_blue_led_pdata,
288 },
289 };
290
291 static struct platform_device n35_blue_led = {
292 .name = "s3c24xx_led",
293 .id = 1,
294 .dev = {
295 .platform_data = &n35_blue_led_pdata,
296 },
297 };
298
299 static struct platform_device n30_warning_led = {
300 .name = "s3c24xx_led",
301 .id = 2,
302 .dev = {
303 .platform_data = &n30_warning_led_pdata,
304 },
305 };
306
307 static struct platform_device n35_warning_led = {
308 .name = "s3c24xx_led",
309 .id = 2,
310 .dev = {
311 .platform_data = &n35_warning_led_pdata,
312 },
313 };
314
315 static struct s3c2410fb_display n30_display __initdata = {
316 .type = S3C2410_LCDCON1_TFT,
317 .width = 240,
318 .height = 320,
319 .pixclock = 170000,
320
321 .xres = 240,
322 .yres = 320,
323 .bpp = 16,
324 .left_margin = 3,
325 .right_margin = 40,
326 .hsync_len = 40,
327 .upper_margin = 2,
328 .lower_margin = 3,
329 .vsync_len = 2,
330
331 .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
332 };
333
334 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
335 .displays = &n30_display,
336 .num_displays = 1,
337 .default_display = 0,
338 .lpcsel = 0x06,
339 };
340
n30_sdi_set_power(unsigned char power_mode,unsigned short vdd)341 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
342 {
343 switch (power_mode) {
344 case MMC_POWER_ON:
345 case MMC_POWER_UP:
346 gpio_set_value(S3C2410_GPG(4), 1);
347 break;
348 case MMC_POWER_OFF:
349 default:
350 gpio_set_value(S3C2410_GPG(4), 0);
351 break;
352 }
353 }
354
355 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
356 .gpio_detect = S3C2410_GPF(1),
357 .gpio_wprotect = S3C2410_GPG(10),
358 .ocr_avail = MMC_VDD_32_33,
359 .set_power = n30_sdi_set_power,
360 };
361
362 static struct platform_device *n30_devices[] __initdata = {
363 &s3c_device_lcd,
364 &s3c_device_wdt,
365 &s3c_device_i2c0,
366 &s3c_device_iis,
367 &s3c_device_ohci,
368 &s3c_device_rtc,
369 &s3c_device_usbgadget,
370 &s3c_device_sdi,
371 &n30_button_device,
372 &n30_blue_led,
373 &n30_warning_led,
374 };
375
376 static struct platform_device *n35_devices[] __initdata = {
377 &s3c_device_lcd,
378 &s3c_device_wdt,
379 &s3c_device_i2c0,
380 &s3c_device_iis,
381 &s3c_device_rtc,
382 &s3c_device_usbgadget,
383 &s3c_device_sdi,
384 &n35_button_device,
385 &n35_blue_led,
386 &n35_warning_led,
387 };
388
389 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
390 .flags = 0,
391 .slave_addr = 0x10,
392 .frequency = 10*1000,
393 };
394
395 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
396 * state so that we can boot Linux directly from flash. */
n30_hwinit(void)397 static void __init n30_hwinit(void)
398 {
399 /* GPA0-11 special functions -- unknown what they do
400 * GPA12 N30 special function -- unknown what it does
401 * N35/PiN output -- unknown what it does
402 *
403 * A12 is nGCS1 on the N30 and an output on the N35/PiN. I
404 * don't think it does anything useful on the N30, so I ought
405 * to make it an output there too since it always driven to 0
406 * as far as I can tell. */
407 if (machine_is_n30())
408 __raw_writel(0x007fffff, S3C2410_GPACON);
409 if (machine_is_n35())
410 __raw_writel(0x007fefff, S3C2410_GPACON);
411 __raw_writel(0x00000000, S3C2410_GPADAT);
412
413 /* GPB0 TOUT0 backlight level
414 * GPB1 output 1=backlight on
415 * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
416 * GPB3 output USB D+ pull up 0=disabled, 1=enabled
417 * GPB4 N30 output -- unknown function
418 * N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
419 * GPB5 output -- unknown function
420 * GPB6 input -- unknown function
421 * GPB7 output -- unknown function
422 * GPB8 output -- probably LCD driver enable
423 * GPB9 output -- probably LCD VSYNC driver enable
424 * GPB10 output -- probably LCD HSYNC driver enable
425 */
426 __raw_writel(0x00154556, S3C2410_GPBCON);
427 __raw_writel(0x00000750, S3C2410_GPBDAT);
428 __raw_writel(0x00000073, S3C2410_GPBUP);
429
430 /* GPC0 input RS232 DCD/DSR/RI
431 * GPC1 LCD
432 * GPC2 output RS232 DTR?
433 * GPC3 input RS232 DCD/DSR/RI
434 * GPC4 LCD
435 * GPC5 output 0=NAND write enabled, 1=NAND write protect
436 * GPC6 input -- unknown function
437 * GPC7 input charger status 0=charger connected
438 * this input can be triggered by power on the USB device
439 * port too, but will go back to disconnected soon after.
440 * GPC8 N30/N35 output -- unknown function, always driven to 1
441 * PiN input -- unknown function, always read as 1
442 * Make it an input with a pull up for all models.
443 * GPC9-15 LCD
444 */
445 __raw_writel(0xaaa80618, S3C2410_GPCCON);
446 __raw_writel(0x0000014c, S3C2410_GPCDAT);
447 __raw_writel(0x0000fef2, S3C2410_GPCUP);
448
449 /* GPD0 input -- unknown function
450 * GPD1-D7 LCD
451 * GPD8 N30 output -- unknown function
452 * N35/PiN output 1=GPS LED on
453 * GPD9 output 0=power led blinks red, 1=normal power led function
454 * GPD10 output -- unknown function
455 * GPD11-15 LCD drivers
456 */
457 __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
458 __raw_writel(0x00000601, S3C2410_GPDDAT);
459 __raw_writel(0x0000fbfe, S3C2410_GPDUP);
460
461 /* GPE0-4 I2S audio bus
462 * GPE5-10 SD/MMC bus
463 * E11-13 outputs -- unknown function, probably power management
464 * E14-15 I2C bus connected to the battery controller
465 */
466 __raw_writel(0xa56aaaaa, S3C2410_GPECON);
467 __raw_writel(0x0000efc5, S3C2410_GPEDAT);
468 __raw_writel(0x0000f81f, S3C2410_GPEUP);
469
470 /* GPF0 input 0=power button pressed
471 * GPF1 input SD/MMC switch 0=card present
472 * GPF2 N30 1=reset button pressed (inverted compared to the rest)
473 * N35/PiN 0=reset button pressed
474 * GPF3 N30/PiN input -- unknown function
475 * N35 input GPS antenna position, 0=antenna closed, 1=open
476 * GPF4 input 0=button 4 pressed
477 * GPF5 input 0=button 3 pressed
478 * GPF6 input 0=button 2 pressed
479 * GPF7 input 0=button 1 pressed
480 */
481 __raw_writel(0x0000aaaa, S3C2410_GPFCON);
482 __raw_writel(0x00000000, S3C2410_GPFDAT);
483 __raw_writel(0x000000ff, S3C2410_GPFUP);
484
485 /* GPG0 input RS232 DCD/DSR/RI
486 * GPG1 input 1=USB gadget port has power from a host
487 * GPG2 N30 input -- unknown function
488 * N35/PiN input 0=headphones plugged in, 1=not plugged in
489 * GPG3 N30 output -- unknown function
490 * N35/PiN input with unknown function
491 * GPG4 N30 output 0=MMC enabled, 1=MMC disabled
492 * GPG5 N30 output 0=BlueTooth chip disabled, 1=enabled
493 * N35/PiN input joystick right
494 * GPG6 N30 output 0=blue led on, 1=off
495 * N35/PiN input joystick left
496 * GPG7 input 0=thumbwheel pressed
497 * GPG8 input 0=thumbwheel down
498 * GPG9 input 0=thumbwheel up
499 * GPG10 input SD/MMC write protect switch
500 * GPG11 N30 input -- unknown function
501 * N35 output 0=GPS antenna powered, 1=not powered
502 * PiN output -- unknown function
503 * GPG12-15 touch screen functions
504 *
505 * The pullups differ between the models, so enable all
506 * pullups that are enabled on any of the models.
507 */
508 if (machine_is_n30())
509 __raw_writel(0xff0a956a, S3C2410_GPGCON);
510 if (machine_is_n35())
511 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
512 __raw_writel(0x0000e800, S3C2410_GPGDAT);
513 __raw_writel(0x0000f86f, S3C2410_GPGUP);
514
515 /* GPH0/1/2/3 RS232 serial port
516 * GPH4/5 IrDA serial port
517 * GPH6/7 N30 BlueTooth serial port
518 * N35/PiN GPS receiver
519 * GPH8 input -- unknown function
520 * GPH9 CLKOUT0 HCLK -- unknown use
521 * GPH10 CLKOUT1 FCLK -- unknown use
522 *
523 * The pull ups for H6/H7 are enabled on N30 but not on the
524 * N35/PiN. I suppose is useful for a budget model of the N30
525 * with no bluetooth. It doesn't hurt to have the pull ups
526 * enabled on the N35, so leave them enabled for all models.
527 */
528 __raw_writel(0x0028aaaa, S3C2410_GPHCON);
529 __raw_writel(0x000005ef, S3C2410_GPHDAT);
530 __raw_writel(0x0000063f, S3C2410_GPHUP);
531 }
532
n30_map_io(void)533 static void __init n30_map_io(void)
534 {
535 s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
536 n30_hwinit();
537 s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
538 samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
539 }
540
n30_init_time(void)541 static void __init n30_init_time(void)
542 {
543 s3c2410_init_clocks(12000000);
544 samsung_timer_init();
545 }
546
547 /* GPB3 is the line that controls the pull-up for the USB D+ line */
548
n30_init(void)549 static void __init n30_init(void)
550 {
551 WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
552
553 s3c24xx_fb_set_platdata(&n30_fb_info);
554 s3c24xx_udc_set_platdata(&n30_udc_cfg);
555 s3c24xx_mci_set_platdata(&n30_mci_cfg);
556 s3c_i2c0_set_platdata(&n30_i2ccfg);
557
558 /* Turn off suspend on both USB ports, and switch the
559 * selectable USB port to USB device mode. */
560
561 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
562 S3C2410_MISCCR_USBSUSPND0 |
563 S3C2410_MISCCR_USBSUSPND1, 0x0);
564
565 if (machine_is_n30()) {
566 /* Turn off suspend on both USB ports, and switch the
567 * selectable USB port to USB device mode. */
568 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
569 S3C2410_MISCCR_USBSUSPND0 |
570 S3C2410_MISCCR_USBSUSPND1, 0x0);
571
572 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
573 }
574
575 if (machine_is_n35()) {
576 /* Turn off suspend and switch the selectable USB port
577 * to USB device mode. Turn on suspend for the host
578 * port since it is not connected on the N35.
579 *
580 * Actually, the host port is available at some pads
581 * on the back of the device, so it would actually be
582 * possible to add a USB device inside the N35 if you
583 * are willing to do some hardware modifications. */
584 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
585 S3C2410_MISCCR_USBSUSPND0 |
586 S3C2410_MISCCR_USBSUSPND1,
587 S3C2410_MISCCR_USBSUSPND0);
588
589 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
590 }
591 }
592
593 MACHINE_START(N30, "Acer-N30")
594 /* Maintainer: Christer Weinigel <christer@weinigel.se>,
595 Ben Dooks <ben-linux@fluff.org>
596 */
597 .atag_offset = 0x100,
598 .init_time = n30_init_time,
599 .init_machine = n30_init,
600 .init_irq = s3c2410_init_irq,
601 .map_io = n30_map_io,
602 MACHINE_END
603
604 MACHINE_START(N35, "Acer-N35")
605 /* Maintainer: Christer Weinigel <christer@weinigel.se>
606 */
607 .atag_offset = 0x100,
608 .init_time = n30_init_time,
609 .init_machine = n30_init,
610 .init_irq = s3c2410_init_irq,
611 .map_io = n30_map_io,
612 MACHINE_END
613