Fix common misspellings
[linux-2.6.git] / arch / arm / mach-s3c2410 / mach-n30.c
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 #include <linux/mmc/host.h>
30
31 #include <mach/hardware.h>
32 #include <asm/irq.h>
33 #include <asm/mach-types.h>
34
35 #include <mach/fb.h>
36 #include <mach/leds-gpio.h>
37 #include <mach/regs-gpio.h>
38 #include <mach/regs-lcd.h>
39
40 #include <asm/mach/arch.h>
41 #include <asm/mach/irq.h>
42 #include <asm/mach/map.h>
43
44 #include <plat/iic.h>
45 #include <plat/regs-serial.h>
46
47 #include <plat/clock.h>
48 #include <plat/cpu.h>
49 #include <plat/devs.h>
50 #include <plat/mci.h>
51 #include <plat/s3c2410.h>
52 #include <plat/udc.h>
53
54 static struct map_desc n30_iodesc[] __initdata = {
55         /* nothing here yet */
56 };
57
58 static struct s3c2410_uartcfg n30_uartcfgs[] = {
59         /* Normal serial port */
60         [0] = {
61                 .hwport      = 0,
62                 .flags       = 0,
63                 .ucon        = 0x2c5,
64                 .ulcon       = 0x03,
65                 .ufcon       = 0x51,
66         },
67         /* IR port */
68         [1] = {
69                 .hwport      = 1,
70                 .flags       = 0,
71                 .uart_flags  = UPF_CONS_FLOW,
72                 .ucon        = 0x2c5,
73                 .ulcon       = 0x43,
74                 .ufcon       = 0x51,
75         },
76         /* On the N30 the bluetooth controller is connected here.
77          * On the N35 and variants the GPS receiver is connected here. */
78         [2] = {
79                 .hwport      = 2,
80                 .flags       = 0,
81                 .ucon        = 0x2c5,
82                 .ulcon       = 0x03,
83                 .ufcon       = 0x51,
84         },
85 };
86
87 static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
88         .vbus_pin               = S3C2410_GPG(1),
89         .vbus_pin_inverted      = 0,
90         .pullup_pin             = S3C2410_GPB(3),
91 };
92
93 static struct gpio_keys_button n30_buttons[] = {
94         {
95                 .gpio           = S3C2410_GPF(0),
96                 .code           = KEY_POWER,
97                 .desc           = "Power",
98                 .active_low     = 0,
99         },
100         {
101                 .gpio           = S3C2410_GPG(9),
102                 .code           = KEY_UP,
103                 .desc           = "Thumbwheel Up",
104                 .active_low     = 0,
105         },
106         {
107                 .gpio           = S3C2410_GPG(8),
108                 .code           = KEY_DOWN,
109                 .desc           = "Thumbwheel Down",
110                 .active_low     = 0,
111         },
112         {
113                 .gpio           = S3C2410_GPG(7),
114                 .code           = KEY_ENTER,
115                 .desc           = "Thumbwheel Press",
116                 .active_low     = 0,
117         },
118         {
119                 .gpio           = S3C2410_GPF(7),
120                 .code           = KEY_HOMEPAGE,
121                 .desc           = "Home",
122                 .active_low     = 0,
123         },
124         {
125                 .gpio           = S3C2410_GPF(6),
126                 .code           = KEY_CALENDAR,
127                 .desc           = "Calendar",
128                 .active_low     = 0,
129         },
130         {
131                 .gpio           = S3C2410_GPF(5),
132                 .code           = KEY_ADDRESSBOOK,
133                 .desc           = "Contacts",
134                 .active_low     = 0,
135         },
136         {
137                 .gpio           = S3C2410_GPF(4),
138                 .code           = KEY_MAIL,
139                 .desc           = "Mail",
140                 .active_low     = 0,
141         },
142 };
143
144 static struct gpio_keys_platform_data n30_button_data = {
145         .buttons        = n30_buttons,
146         .nbuttons       = ARRAY_SIZE(n30_buttons),
147 };
148
149 static struct platform_device n30_button_device = {
150         .name           = "gpio-keys",
151         .id             = -1,
152         .dev            = {
153                 .platform_data  = &n30_button_data,
154         }
155 };
156
157 static struct gpio_keys_button n35_buttons[] = {
158         {
159                 .gpio           = S3C2410_GPF(0),
160                 .code           = KEY_POWER,
161                 .type           = EV_PWR,
162                 .desc           = "Power",
163                 .active_low     = 0,
164                 .wakeup         = 1,
165         },
166         {
167                 .gpio           = S3C2410_GPG(9),
168                 .code           = KEY_UP,
169                 .desc           = "Joystick Up",
170                 .active_low     = 0,
171         },
172         {
173                 .gpio           = S3C2410_GPG(8),
174                 .code           = KEY_DOWN,
175                 .desc           = "Joystick Down",
176                 .active_low     = 0,
177         },
178         {
179                 .gpio           = S3C2410_GPG(6),
180                 .code           = KEY_DOWN,
181                 .desc           = "Joystick Left",
182                 .active_low     = 0,
183         },
184         {
185                 .gpio           = S3C2410_GPG(5),
186                 .code           = KEY_DOWN,
187                 .desc           = "Joystick Right",
188                 .active_low     = 0,
189         },
190         {
191                 .gpio           = S3C2410_GPG(7),
192                 .code           = KEY_ENTER,
193                 .desc           = "Joystick Press",
194                 .active_low     = 0,
195         },
196         {
197                 .gpio           = S3C2410_GPF(7),
198                 .code           = KEY_HOMEPAGE,
199                 .desc           = "Home",
200                 .active_low     = 0,
201         },
202         {
203                 .gpio           = S3C2410_GPF(6),
204                 .code           = KEY_CALENDAR,
205                 .desc           = "Calendar",
206                 .active_low     = 0,
207         },
208         {
209                 .gpio           = S3C2410_GPF(5),
210                 .code           = KEY_ADDRESSBOOK,
211                 .desc           = "Contacts",
212                 .active_low     = 0,
213         },
214         {
215                 .gpio           = S3C2410_GPF(4),
216                 .code           = KEY_MAIL,
217                 .desc           = "Mail",
218                 .active_low     = 0,
219         },
220         {
221                 .gpio           = S3C2410_GPF(3),
222                 .code           = SW_RADIO,
223                 .desc           = "GPS Antenna",
224                 .active_low     = 0,
225         },
226         {
227                 .gpio           = S3C2410_GPG(2),
228                 .code           = SW_HEADPHONE_INSERT,
229                 .desc           = "Headphone",
230                 .active_low     = 0,
231         },
232 };
233
234 static struct gpio_keys_platform_data n35_button_data = {
235         .buttons        = n35_buttons,
236         .nbuttons       = ARRAY_SIZE(n35_buttons),
237 };
238
239 static struct platform_device n35_button_device = {
240         .name           = "gpio-keys",
241         .id             = -1,
242         .num_resources  = 0,
243         .dev            = {
244                 .platform_data  = &n35_button_data,
245         }
246 };
247
248 /* This is the bluetooth LED on the device. */
249 static struct s3c24xx_led_platdata n30_blue_led_pdata = {
250         .name           = "blue_led",
251         .gpio           = S3C2410_GPG(6),
252         .def_trigger    = "",
253 };
254
255 /* This is the blue LED on the device. Originally used to indicate GPS activity
256  * by flashing. */
257 static struct s3c24xx_led_platdata n35_blue_led_pdata = {
258         .name           = "blue_led",
259         .gpio           = S3C2410_GPD(8),
260         .def_trigger    = "",
261 };
262
263 /* This LED is driven by the battery microcontroller, and is blinking
264  * red, blinking green or solid green when the battery is low,
265  * charging or full respectively.  By driving GPD9 low, it's possible
266  * to force the LED to blink red, so call that warning LED.  */
267 static struct s3c24xx_led_platdata n30_warning_led_pdata = {
268         .name           = "warning_led",
269         .flags          = S3C24XX_LEDF_ACTLOW,
270         .gpio           = S3C2410_GPD(9),
271         .def_trigger    = "",
272 };
273
274 static struct s3c24xx_led_platdata n35_warning_led_pdata = {
275         .name           = "warning_led",
276         .flags          = S3C24XX_LEDF_ACTLOW | S3C24XX_LEDF_TRISTATE,
277         .gpio           = S3C2410_GPD(9),
278         .def_trigger    = "",
279 };
280
281 static struct platform_device n30_blue_led = {
282         .name           = "s3c24xx_led",
283         .id             = 1,
284         .dev            = {
285                 .platform_data  = &n30_blue_led_pdata,
286         },
287 };
288
289 static struct platform_device n35_blue_led = {
290         .name           = "s3c24xx_led",
291         .id             = 1,
292         .dev            = {
293                 .platform_data  = &n35_blue_led_pdata,
294         },
295 };
296
297 static struct platform_device n30_warning_led = {
298         .name           = "s3c24xx_led",
299         .id             = 2,
300         .dev            = {
301                 .platform_data  = &n30_warning_led_pdata,
302         },
303 };
304
305 static struct platform_device n35_warning_led = {
306         .name           = "s3c24xx_led",
307         .id             = 2,
308         .dev            = {
309                 .platform_data  = &n35_warning_led_pdata,
310         },
311 };
312
313 static struct s3c2410fb_display n30_display __initdata = {
314         .type           = S3C2410_LCDCON1_TFT,
315         .width          = 240,
316         .height         = 320,
317         .pixclock       = 170000,
318
319         .xres           = 240,
320         .yres           = 320,
321         .bpp            = 16,
322         .left_margin    = 3,
323         .right_margin   = 40,
324         .hsync_len      = 40,
325         .upper_margin   = 2,
326         .lower_margin   = 3,
327         .vsync_len      = 2,
328
329         .lcdcon5 = S3C2410_LCDCON5_INVVLINE | S3C2410_LCDCON5_INVVFRAME,
330 };
331
332 static struct s3c2410fb_mach_info n30_fb_info __initdata = {
333         .displays       = &n30_display,
334         .num_displays   = 1,
335         .default_display = 0,
336         .lpcsel         = 0x06,
337 };
338
339 static void n30_sdi_set_power(unsigned char power_mode, unsigned short vdd)
340 {
341         switch (power_mode) {
342         case MMC_POWER_ON:
343         case MMC_POWER_UP:
344                 gpio_set_value(S3C2410_GPG(4), 1);
345                 break;
346         case MMC_POWER_OFF:
347         default:
348                 gpio_set_value(S3C2410_GPG(4), 0);
349                 break;
350         }
351 }
352
353 static struct s3c24xx_mci_pdata n30_mci_cfg __initdata = {
354         .gpio_detect    = S3C2410_GPF(1),
355         .gpio_wprotect  = S3C2410_GPG(10),
356         .ocr_avail      = MMC_VDD_32_33,
357         .set_power      = n30_sdi_set_power,
358 };
359
360 static struct platform_device *n30_devices[] __initdata = {
361         &s3c_device_lcd,
362         &s3c_device_wdt,
363         &s3c_device_i2c0,
364         &s3c_device_iis,
365         &s3c_device_ohci,
366         &s3c_device_rtc,
367         &s3c_device_usbgadget,
368         &s3c_device_sdi,
369         &n30_button_device,
370         &n30_blue_led,
371         &n30_warning_led,
372 };
373
374 static struct platform_device *n35_devices[] __initdata = {
375         &s3c_device_lcd,
376         &s3c_device_wdt,
377         &s3c_device_i2c0,
378         &s3c_device_iis,
379         &s3c_device_rtc,
380         &s3c_device_usbgadget,
381         &s3c_device_sdi,
382         &n35_button_device,
383         &n35_blue_led,
384         &n35_warning_led,
385 };
386
387 static struct s3c2410_platform_i2c __initdata n30_i2ccfg = {
388         .flags          = 0,
389         .slave_addr     = 0x10,
390         .frequency      = 10*1000,
391 };
392
393 /* Lots of hardcoded stuff, but it sets up the hardware in a useful
394  * state so that we can boot Linux directly from flash. */
395 static void __init n30_hwinit(void)
396 {
397         /* GPA0-11 special functions -- unknown what they do
398          * GPA12 N30 special function -- unknown what it does
399          *       N35/PiN output -- unknown what it does
400          *
401          * A12 is nGCS1 on the N30 and an output on the N35/PiN.  I
402          * don't think it does anything useful on the N30, so I ought
403          * to make it an output there too since it always driven to 0
404          * as far as I can tell. */
405         if (machine_is_n30())
406                 __raw_writel(0x007fffff, S3C2410_GPACON);
407         if (machine_is_n35())
408                 __raw_writel(0x007fefff, S3C2410_GPACON);
409         __raw_writel(0x00000000, S3C2410_GPADAT);
410
411         /* GPB0 TOUT0 backlight level
412          * GPB1 output 1=backlight on
413          * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
414          * GPB3 output USB D+ pull up 0=disabled, 1=enabled
415          * GPB4 N30 output -- unknown function
416          *      N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
417          * GPB5 output -- unknown function
418          * GPB6 input -- unknown function
419          * GPB7 output -- unknown function
420          * GPB8 output -- probably LCD driver enable
421          * GPB9 output -- probably LCD VSYNC driver enable
422          * GPB10 output -- probably LCD HSYNC driver enable
423          */
424         __raw_writel(0x00154556, S3C2410_GPBCON);
425         __raw_writel(0x00000750, S3C2410_GPBDAT);
426         __raw_writel(0x00000073, S3C2410_GPBUP);
427
428         /* GPC0 input RS232 DCD/DSR/RI
429          * GPC1 LCD
430          * GPC2 output RS232 DTR?
431          * GPC3 input RS232 DCD/DSR/RI
432          * GPC4 LCD
433          * GPC5 output 0=NAND write enabled, 1=NAND write protect
434          * GPC6 input -- unknown function
435          * GPC7 input charger status 0=charger connected
436          *      this input can be triggered by power on the USB device
437          *      port too, but will go back to disconnected soon after.
438          * GPC8 N30/N35 output -- unknown function, always driven to 1
439          *      PiN input -- unknown function, always read as 1
440          *      Make it an input with a pull up for all models.
441          * GPC9-15 LCD
442          */
443         __raw_writel(0xaaa80618, S3C2410_GPCCON);
444         __raw_writel(0x0000014c, S3C2410_GPCDAT);
445         __raw_writel(0x0000fef2, S3C2410_GPCUP);
446
447         /* GPD0 input -- unknown function
448          * GPD1-D7 LCD
449          * GPD8 N30 output -- unknown function
450          *      N35/PiN output 1=GPS LED on
451          * GPD9 output 0=power led blinks red, 1=normal power led function
452          * GPD10 output -- unknown function
453          * GPD11-15 LCD drivers
454          */
455         __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
456         __raw_writel(0x00000601, S3C2410_GPDDAT);
457         __raw_writel(0x0000fbfe, S3C2410_GPDUP);
458
459         /* GPE0-4 I2S audio bus
460          * GPE5-10 SD/MMC bus
461          * E11-13 outputs -- unknown function, probably power management
462          * E14-15 I2C bus connected to the battery controller
463          */
464         __raw_writel(0xa56aaaaa, S3C2410_GPECON);
465         __raw_writel(0x0000efc5, S3C2410_GPEDAT);
466         __raw_writel(0x0000f81f, S3C2410_GPEUP);
467
468         /* GPF0  input 0=power button pressed
469          * GPF1  input SD/MMC switch 0=card present
470          * GPF2  N30 1=reset button pressed (inverted compared to the rest)
471          *       N35/PiN 0=reset button pressed
472          * GPF3  N30/PiN input -- unknown function
473          *       N35 input GPS antenna position, 0=antenna closed, 1=open
474          * GPF4  input 0=button 4 pressed
475          * GPF5  input 0=button 3 pressed
476          * GPF6  input 0=button 2 pressed
477          * GPF7  input 0=button 1 pressed
478          */
479         __raw_writel(0x0000aaaa, S3C2410_GPFCON);
480         __raw_writel(0x00000000, S3C2410_GPFDAT);
481         __raw_writel(0x000000ff, S3C2410_GPFUP);
482
483         /* GPG0  input RS232 DCD/DSR/RI
484          * GPG1  input 1=USB gadget port has power from a host
485          * GPG2  N30 input -- unknown function
486          *       N35/PiN input 0=headphones plugged in, 1=not plugged in
487          * GPG3  N30 output -- unknown function
488          *       N35/PiN input with unknown function
489          * GPG4  N30 output 0=MMC enabled, 1=MMC disabled
490          * GPG5  N30 output 0=BlueTooth chip disabled, 1=enabled
491          *       N35/PiN input joystick right
492          * GPG6  N30 output 0=blue led on, 1=off
493          *       N35/PiN input joystick left
494          * GPG7  input 0=thumbwheel pressed
495          * GPG8  input 0=thumbwheel down
496          * GPG9  input 0=thumbwheel up
497          * GPG10 input SD/MMC write protect switch
498          * GPG11 N30 input -- unknown function
499          *       N35 output 0=GPS antenna powered, 1=not powered
500          *       PiN output -- unknown function
501          * GPG12-15 touch screen functions
502          *
503          * The pullups differ between the models, so enable all
504          * pullups that are enabled on any of the models.
505          */
506         if (machine_is_n30())
507                 __raw_writel(0xff0a956a, S3C2410_GPGCON);
508         if (machine_is_n35())
509                 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
510         __raw_writel(0x0000e800, S3C2410_GPGDAT);
511         __raw_writel(0x0000f86f, S3C2410_GPGUP);
512
513         /* GPH0/1/2/3 RS232 serial port
514          * GPH4/5 IrDA serial port
515          * GPH6/7  N30 BlueTooth serial port
516          *         N35/PiN GPS receiver
517          * GPH8 input -- unknown function
518          * GPH9 CLKOUT0 HCLK -- unknown use
519          * GPH10 CLKOUT1 FCLK -- unknown use
520          *
521          * The pull ups for H6/H7 are enabled on N30 but not on the
522          * N35/PiN.  I suppose is useful for a budget model of the N30
523          * with no bluetooh.  It doesn't hurt to have the pull ups
524          * enabled on the N35, so leave them enabled for all models.
525          */
526         __raw_writel(0x0028aaaa, S3C2410_GPHCON);
527         __raw_writel(0x000005ef, S3C2410_GPHDAT);
528         __raw_writel(0x0000063f, S3C2410_GPHUP);
529 }
530
531 static void __init n30_map_io(void)
532 {
533         s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
534         n30_hwinit();
535         s3c24xx_init_clocks(0);
536         s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
537 }
538
539 /* GPB3 is the line that controls the pull-up for the USB D+ line */
540
541 static void __init n30_init(void)
542 {
543         WARN_ON(gpio_request(S3C2410_GPG(4), "mmc power"));
544
545         s3c24xx_fb_set_platdata(&n30_fb_info);
546         s3c24xx_udc_set_platdata(&n30_udc_cfg);
547         s3c24xx_mci_set_platdata(&n30_mci_cfg);
548         s3c_i2c0_set_platdata(&n30_i2ccfg);
549
550         /* Turn off suspend on both USB ports, and switch the
551          * selectable USB port to USB device mode. */
552
553         s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
554                               S3C2410_MISCCR_USBSUSPND0 |
555                               S3C2410_MISCCR_USBSUSPND1, 0x0);
556
557         if (machine_is_n30()) {
558                 /* Turn off suspend on both USB ports, and switch the
559                  * selectable USB port to USB device mode. */
560                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
561                                       S3C2410_MISCCR_USBSUSPND0 |
562                                       S3C2410_MISCCR_USBSUSPND1, 0x0);
563
564                 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
565         }
566
567         if (machine_is_n35()) {
568                 /* Turn off suspend and switch the selectable USB port
569                  * to USB device mode.  Turn on suspend for the host
570                  * port since it is not connected on the N35.
571                  *
572                  * Actually, the host port is available at some pads
573                  * on the back of the device, so it would actually be
574                  * possible to add a USB device inside the N35 if you
575                  * are willing to do some hardware modifications. */
576                 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
577                                       S3C2410_MISCCR_USBSUSPND0 |
578                                       S3C2410_MISCCR_USBSUSPND1,
579                                       S3C2410_MISCCR_USBSUSPND0);
580
581                 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
582         }
583 }
584
585 MACHINE_START(N30, "Acer-N30")
586         /* Maintainer: Christer Weinigel <christer@weinigel.se>,
587                                 Ben Dooks <ben-linux@fluff.org>
588         */
589         .boot_params    = S3C2410_SDRAM_PA + 0x100,
590         .timer          = &s3c24xx_timer,
591         .init_machine   = n30_init,
592         .init_irq       = s3c24xx_init_irq,
593         .map_io         = n30_map_io,
594 MACHINE_END
595
596 MACHINE_START(N35, "Acer-N35")
597         /* Maintainer: Christer Weinigel <christer@weinigel.se>
598         */
599         .boot_params    = S3C2410_SDRAM_PA + 0x100,
600         .timer          = &s3c24xx_timer,
601         .init_machine   = n30_init,
602         .init_irq       = s3c24xx_init_irq,
603         .map_io         = n30_map_io,
604 MACHINE_END