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-rw-r--r--arch/arm/mach-s3c2410/mach-n30.c474
1 files changed, 450 insertions, 24 deletions
diff --git a/arch/arm/mach-s3c2410/mach-n30.c b/arch/arm/mach-s3c2410/mach-n30.c
index 621f548da610..43c2e915c5bf 100644
--- a/arch/arm/mach-s3c2410/mach-n30.c
+++ b/arch/arm/mach-s3c2410/mach-n30.c
@@ -1,9 +1,10 @@
1/* linux/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.
2 * 3 *
3 * Copyright (c) 2003-2005 Simtec Electronics 4 * Copyright (c) 2003-2005 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk> 5 * Ben Dooks <ben@simtec.co.uk>
5 * 6 *
6 * Copyright (c) 2005 Christer Weinigel <christer@weinigel.se> 7 * Copyright (c) 2005-2008 Christer Weinigel <christer@weinigel.se>
7 * 8 *
8 * There is a wiki with more information about the n30 port at 9 * There is a wiki with more information about the n30 port at
9 * http://handhelds.org/moin/moin.cgi/AcerN30Documentation . 10 * http://handhelds.org/moin/moin.cgi/AcerN30Documentation .
@@ -11,36 +12,42 @@
11 * This program is free software; you can redistribute it and/or modify 12 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as 13 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation. 14 * published by the Free Software Foundation.
14*/ 15 */
15 16
16#include <linux/kernel.h> 17#include <linux/kernel.h>
17#include <linux/types.h> 18#include <linux/types.h>
18#include <linux/interrupt.h> 19
19#include <linux/list.h>
20#include <linux/timer.h>
21#include <linux/init.h>
22#include <linux/delay.h> 20#include <linux/delay.h>
23#include <linux/serial_core.h> 21#include <linux/gpio_keys.h>
22#include <linux/init.h>
23#include <linux/input.h>
24#include <linux/interrupt.h>
24#include <linux/platform_device.h> 25#include <linux/platform_device.h>
25#include <linux/kthread.h> 26#include <linux/serial_core.h>
26 27#include <linux/timer.h>
27#include <asm/mach/arch.h>
28#include <asm/mach/map.h>
29#include <asm/mach/irq.h>
30 28
31#include <asm/hardware.h> 29#include <asm/hardware.h>
32#include <asm/io.h> 30#include <asm/io.h>
33#include <asm/irq.h> 31#include <asm/irq.h>
34#include <asm/mach-types.h> 32#include <asm/mach-types.h>
35 33
36#include <asm/plat-s3c/regs-serial.h> 34#include <asm/arch/fb.h>
35#include <asm/arch/leds-gpio.h>
37#include <asm/arch/regs-gpio.h> 36#include <asm/arch/regs-gpio.h>
37#include <asm/arch/regs-lcd.h>
38
39#include <asm/mach/arch.h>
40#include <asm/mach/irq.h>
41#include <asm/mach/map.h>
42
38#include <asm/plat-s3c/iic.h> 43#include <asm/plat-s3c/iic.h>
44#include <asm/plat-s3c/regs-serial.h>
39 45
40#include <asm/plat-s3c24xx/s3c2410.h>
41#include <asm/plat-s3c24xx/clock.h> 46#include <asm/plat-s3c24xx/clock.h>
42#include <asm/plat-s3c24xx/devs.h>
43#include <asm/plat-s3c24xx/cpu.h> 47#include <asm/plat-s3c24xx/cpu.h>
48#include <asm/plat-s3c24xx/devs.h>
49#include <asm/plat-s3c24xx/s3c2410.h>
50#include <asm/plat-s3c24xx/udc.h>
44 51
45static struct map_desc n30_iodesc[] __initdata = { 52static struct map_desc n30_iodesc[] __initdata = {
46 /* nothing here yet */ 53 /* nothing here yet */
@@ -64,7 +71,8 @@ static struct s3c2410_uartcfg n30_uartcfgs[] = {
64 .ulcon = 0x43, 71 .ulcon = 0x43,
65 .ufcon = 0x51, 72 .ufcon = 0x51,
66 }, 73 },
67 /* The BlueTooth controller is connected to port 2 */ 74 /* On the N30 the bluetooth controller is connected here.
75 * On the N35 and variants the GPS receiver is connected here. */
68 [2] = { 76 [2] = {
69 .hwport = 2, 77 .hwport = 2,
70 .flags = 0, 78 .flags = 0,
@@ -74,13 +82,260 @@ static struct s3c2410_uartcfg n30_uartcfgs[] = {
74 }, 82 },
75}; 83};
76 84
85static 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_GPB3, 1);
90 break;
91 case S3C2410_UDC_P_DISABLE :
92 s3c2410_gpio_setpin(S3C2410_GPB3, 0);
93 break;
94 case S3C2410_UDC_P_RESET :
95 break;
96 default:
97 break;
98 }
99}
100
101static struct s3c2410_udc_mach_info n30_udc_cfg __initdata = {
102 .udc_command = n30_udc_pullup,
103 .vbus_pin = S3C2410_GPG1,
104 .vbus_pin_inverted = 0,
105};
106
107static struct gpio_keys_button n30_buttons[] = {
108 {
109 .gpio = S3C2410_GPF0,
110 .code = KEY_POWER,
111 .desc = "Power",
112 .active_low = 0,
113 },
114 {
115 .gpio = S3C2410_GPG9,
116 .code = KEY_UP,
117 .desc = "Thumbwheel Up",
118 .active_low = 0,
119 },
120 {
121 .gpio = S3C2410_GPG8,
122 .code = KEY_DOWN,
123 .desc = "Thumbwheel Down",
124 .active_low = 0,
125 },
126 {
127 .gpio = S3C2410_GPG7,
128 .code = KEY_ENTER,
129 .desc = "Thumbwheel Press",
130 .active_low = 0,
131 },
132 {
133 .gpio = S3C2410_GPF7,
134 .code = KEY_HOMEPAGE,
135 .desc = "Home",
136 .active_low = 0,
137 },
138 {
139 .gpio = S3C2410_GPF6,
140 .code = KEY_CALENDAR,
141 .desc = "Calendar",
142 .active_low = 0,
143 },
144 {
145 .gpio = S3C2410_GPF5,
146 .code = KEY_ADDRESSBOOK,
147 .desc = "Contacts",
148 .active_low = 0,
149 },
150 {
151 .gpio = S3C2410_GPF4,
152 .code = KEY_MAIL,
153 .desc = "Mail",
154 .active_low = 0,
155 },
156};
157
158static struct gpio_keys_platform_data n30_button_data = {
159 .buttons = n30_buttons,
160 .nbuttons = ARRAY_SIZE(n30_buttons),
161};
162
163static struct platform_device n30_button_device = {
164 .name = "gpio-keys",
165 .id = -1,
166 .dev = {
167 .platform_data = &n30_button_data,
168 }
169};
170
171static struct gpio_keys_button n35_buttons[] = {
172 {
173 .gpio = S3C2410_GPF0,
174 .code = KEY_POWER,
175 .desc = "Power",
176 .active_low = 0,
177 },
178 {
179 .gpio = S3C2410_GPG9,
180 .code = KEY_UP,
181 .desc = "Joystick Up",
182 .active_low = 0,
183 },
184 {
185 .gpio = S3C2410_GPG8,
186 .code = KEY_DOWN,
187 .desc = "Joystick Down",
188 .active_low = 0,
189 },
190 {
191 .gpio = S3C2410_GPG6,
192 .code = KEY_DOWN,
193 .desc = "Joystick Left",
194 .active_low = 0,
195 },
196 {
197 .gpio = S3C2410_GPG5,
198 .code = KEY_DOWN,
199 .desc = "Joystick Right",
200 .active_low = 0,
201 },
202 {
203 .gpio = S3C2410_GPG7,
204 .code = KEY_ENTER,
205 .desc = "Joystick Press",
206 .active_low = 0,
207 },
208 {
209 .gpio = S3C2410_GPF7,
210 .code = KEY_HOMEPAGE,
211 .desc = "Home",
212 .active_low = 0,
213 },
214 {
215 .gpio = S3C2410_GPF6,
216 .code = KEY_CALENDAR,
217 .desc = "Calendar",
218 .active_low = 0,
219 },
220 {
221 .gpio = S3C2410_GPF5,
222 .code = KEY_ADDRESSBOOK,
223 .desc = "Contacts",
224 .active_low = 0,
225 },
226 {
227 .gpio = S3C2410_GPF4,
228 .code = KEY_MAIL,
229 .desc = "Mail",
230 .active_low = 0,
231 },
232 {
233 .gpio = S3C2410_GPF3,
234 .code = SW_RADIO,
235 .desc = "GPS Antenna",
236 .active_low = 0,
237 },
238 {
239 .gpio = S3C2410_GPG2,
240 .code = SW_HEADPHONE_INSERT,
241 .desc = "Headphone",
242 .active_low = 0,
243 },
244};
245
246static struct gpio_keys_platform_data n35_button_data = {
247 .buttons = n35_buttons,
248 .nbuttons = ARRAY_SIZE(n35_buttons),
249};
250
251static 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. */
261static struct s3c24xx_led_platdata n30_blue_led_pdata = {
262 .name = "blue_led",
263 .gpio = S3C2410_GPG6,
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. */
271static struct s3c24xx_led_platdata n30_warning_led_pdata = {
272 .name = "warning_led",
273 .flags = S3C24XX_LEDF_ACTLOW,
274 .gpio = S3C2410_GPD9,
275 .def_trigger = "",
276};
277
278static 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
286static 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
294static 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
313static 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
77static struct platform_device *n30_devices[] __initdata = { 320static struct platform_device *n30_devices[] __initdata = {
321 &s3c_device_lcd,
322 &s3c_device_wdt,
323 &s3c_device_i2c,
324 &s3c_device_iis,
78 &s3c_device_usb, 325 &s3c_device_usb,
326 &s3c_device_usbgadget,
327 &n30_button_device,
328 &n30_blue_led,
329 &n30_warning_led,
330};
331
332static struct platform_device *n35_devices[] __initdata = {
79 &s3c_device_lcd, 333 &s3c_device_lcd,
80 &s3c_device_wdt, 334 &s3c_device_wdt,
81 &s3c_device_i2c, 335 &s3c_device_i2c,
82 &s3c_device_iis, 336 &s3c_device_iis,
83 &s3c_device_usbgadget, 337 &s3c_device_usbgadget,
338 &n35_button_device,
84}; 339};
85 340
86static struct s3c2410_platform_i2c n30_i2ccfg = { 341static struct s3c2410_platform_i2c n30_i2ccfg = {
@@ -90,9 +345,148 @@ static struct s3c2410_platform_i2c n30_i2ccfg = {
90 .max_freq = 10*1000, 345 .max_freq = 10*1000,
91}; 346};
92 347
348/* Lots of hardcoded stuff, but it sets up the hardware in a useful
349 * state so that we can boot Linux directly from flash. */
350static void __init n30_hwinit(void)
351{
352 /* GPA0-11 special functions -- unknown what they do
353 * GPA12 N30 special function -- unknown what it does
354 * N35/PiN output -- unknown what it does
355 *
356 * A12 is nGCS1 on the N30 and an output on the N35/PiN. I
357 * don't think it does anything useful on the N30, so I ought
358 * to make it an output there too since it always driven to 0
359 * as far as I can tell. */
360 if (machine_is_n30())
361 __raw_writel(0x007fffff, S3C2410_GPACON);
362 if (machine_is_n35())
363 __raw_writel(0x007fefff, S3C2410_GPACON);
364 __raw_writel(0x00000000, S3C2410_GPADAT);
365
366 /* GPB0 TOUT0 backlight level
367 * GPB1 output 1=backlight on
368 * GPB2 output IrDA enable 0=transceiver enabled, 1=disabled
369 * GPB3 output USB D+ pull up 0=disabled, 1=enabled
370 * GPB4 N30 output -- unknown function
371 * N30/PiN GPS control 0=GPS enabled, 1=GPS disabled
372 * GPB5 output -- unknown function
373 * GPB6 input -- unknown function
374 * GPB7 output -- unknown function
375 * GPB8 output -- probably LCD driver enable
376 * GPB9 output -- probably LCD VSYNC driver enable
377 * GPB10 output -- probably LCD HSYNC driver enable
378 */
379 __raw_writel(0x00154556, S3C2410_GPBCON);
380 __raw_writel(0x00000750, S3C2410_GPBDAT);
381 __raw_writel(0x00000073, S3C2410_GPBUP);
382
383 /* GPC0 input RS232 DCD/DSR/RI
384 * GPC1 LCD
385 * GPC2 output RS232 DTR?
386 * GPC3 input RS232 DCD/DSR/RI
387 * GPC4 LCD
388 * GPC5 output 0=NAND write enabled, 1=NAND write protect
389 * GPC6 input -- unknown function
390 * GPC7 input charger status 0=charger connected
391 * this input can be triggered by power on the USB device
392 * port too, but will go back to disconnected soon after.
393 * GPC8 N30/N35 output -- unknown function, always driven to 1
394 * PiN input -- unknown function, always read as 1
395 * Make it an input with a pull up for all models.
396 * GPC9-15 LCD
397 */
398 __raw_writel(0xaaa80618, S3C2410_GPCCON);
399 __raw_writel(0x0000014c, S3C2410_GPCDAT);
400 __raw_writel(0x0000fef2, S3C2410_GPCUP);
401
402 /* GPD0 input -- unknown function
403 * GPD1-D7 LCD
404 * GPD8 N30 output -- unknown function
405 * N35/PiN output 1=GPS LED on
406 * GPD9 output 0=power led blinks red, 1=normal power led function
407 * GPD10 output -- unknown function
408 * GPD11-15 LCD drivers
409 */
410 __raw_writel(0xaa95aaa4, S3C2410_GPDCON);
411 __raw_writel(0x00000601, S3C2410_GPDDAT);
412 __raw_writel(0x0000fbfe, S3C2410_GPDUP);
413
414 /* GPE0-4 I2S audio bus
415 * GPE5-10 SD/MMC bus
416 * E11-13 outputs -- unknown function, probably power management
417 * E14-15 I2C bus connected to the battery controller
418 */
419 __raw_writel(0xa56aaaaa, S3C2410_GPECON);
420 __raw_writel(0x0000efc5, S3C2410_GPEDAT);
421 __raw_writel(0x0000f81f, S3C2410_GPEUP);
422
423 /* GPF0 input 0=power button pressed
424 * GPF1 input SD/MMC switch 0=card present
425 * GPF2 N30 1=reset button pressed (inverted compared to the rest)
426 * N35/PiN 0=reset button pressed
427 * GPF3 N30/PiN input -- unknown function
428 * N35 input GPS antenna position, 0=antenna closed, 1=open
429 * GPF4 input 0=button 4 pressed
430 * GPF5 input 0=button 3 pressed
431 * GPF6 input 0=button 2 pressed
432 * GPF7 input 0=button 1 pressed
433 */
434 __raw_writel(0x0000aaaa, S3C2410_GPFCON);
435 __raw_writel(0x00000000, S3C2410_GPFDAT);
436 __raw_writel(0x000000ff, S3C2410_GPFUP);
437
438 /* GPG0 input RS232 DCD/DSR/RI
439 * GPG1 input 1=USB gadget port has power from a host
440 * GPG2 N30 input -- unknown function
441 * N35/PiN input 0=headphones plugged in, 1=not plugged in
442 * GPG3 N30 output -- unknown function
443 * N35/PiN input with unknown function
444 * GPG4 N30 output 0=MMC enabled, 1=MMC disabled
445 * GPG5 N30 output 0=BlueTooth chip disabled, 1=enabled
446 * N35/PiN input joystick right
447 * GPG6 N30 output 0=blue led on, 1=off
448 * N35/PiN input joystick left
449 * GPG7 input 0=thumbwheel pressed
450 * GPG8 input 0=thumbwheel down
451 * GPG9 input 0=thumbwheel up
452 * GPG10 input SD/MMC write protect switch
453 * GPG11 N30 input -- unknown function
454 * N35 output 0=GPS antenna powered, 1=not powered
455 * PiN output -- unknown function
456 * GPG12-15 touch screen functions
457 *
458 * The pullups differ between the models, so enable all
459 * pullups that are enabled on any of the models.
460 */
461 if (machine_is_n30())
462 __raw_writel(0xff0a956a, S3C2410_GPGCON);
463 if (machine_is_n35())
464 __raw_writel(0xff4aa92a, S3C2410_GPGCON);
465 __raw_writel(0x0000e800, S3C2410_GPGDAT);
466 __raw_writel(0x0000f86f, S3C2410_GPGUP);
467
468 /* GPH0/1/2/3 RS232 serial port
469 * GPH4/5 IrDA serial port
470 * GPH6/7 N30 BlueTooth serial port
471 * N35/PiN GPS receiver
472 * GPH8 input -- unknown function
473 * GPH9 CLKOUT0 HCLK -- unknown use
474 * GPH10 CLKOUT1 FCLK -- unknown use
475 *
476 * The pull ups for H6/H7 are enabled on N30 but not on the
477 * N35/PiN. I suppose is useful for a budget model of the N30
478 * with no bluetooh. It doesn't hurt to have the pull ups
479 * enabled on the N35, so leave them enabled for all models.
480 */
481 __raw_writel(0x0028aaaa, S3C2410_GPHCON);
482 __raw_writel(0x000005ef, S3C2410_GPHDAT);
483 __raw_writel(0x0000063f, S3C2410_GPHUP);
484}
485
93static void __init n30_map_io(void) 486static void __init n30_map_io(void)
94{ 487{
95 s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc)); 488 s3c24xx_init_io(n30_iodesc, ARRAY_SIZE(n30_iodesc));
489 n30_hwinit();
96 s3c24xx_init_clocks(0); 490 s3c24xx_init_clocks(0);
97 s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs)); 491 s3c24xx_init_uarts(n30_uartcfgs, ARRAY_SIZE(n30_uartcfgs));
98} 492}
@@ -106,7 +500,9 @@ static void __init n30_init_irq(void)
106 500
107static void __init n30_init(void) 501static void __init n30_init(void)
108{ 502{
503 s3c24xx_fb_set_platdata(&n30_fb_info);
109 s3c_device_i2c.dev.platform_data = &n30_i2ccfg; 504 s3c_device_i2c.dev.platform_data = &n30_i2ccfg;
505 s3c24xx_udc_set_platdata(&n30_udc_cfg);
110 506
111 /* Turn off suspend on both USB ports, and switch the 507 /* Turn off suspend on both USB ports, and switch the
112 * selectable USB port to USB device mode. */ 508 * selectable USB port to USB device mode. */
@@ -115,7 +511,32 @@ static void __init n30_init(void)
115 S3C2410_MISCCR_USBSUSPND0 | 511 S3C2410_MISCCR_USBSUSPND0 |
116 S3C2410_MISCCR_USBSUSPND1, 0x0); 512 S3C2410_MISCCR_USBSUSPND1, 0x0);
117 513
118 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices)); 514 if (machine_is_n30()) {
515 /* Turn off suspend on both USB ports, and switch the
516 * selectable USB port to USB device mode. */
517 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
518 S3C2410_MISCCR_USBSUSPND0 |
519 S3C2410_MISCCR_USBSUSPND1, 0x0);
520
521 platform_add_devices(n30_devices, ARRAY_SIZE(n30_devices));
522 }
523
524 if (machine_is_n35()) {
525 /* Turn off suspend and switch the selectable USB port
526 * to USB device mode. Turn on suspend for the host
527 * port since it is not connected on the N35.
528 *
529 * Actually, the host port is available at some pads
530 * on the back of the device, so it would actually be
531 * possible to add a USB device inside the N35 if you
532 * are willing to do some hardware modifications. */
533 s3c2410_modify_misccr(S3C2410_MISCCR_USBHOST |
534 S3C2410_MISCCR_USBSUSPND0 |
535 S3C2410_MISCCR_USBSUSPND1,
536 S3C2410_MISCCR_USBSUSPND1);
537
538 platform_add_devices(n35_devices, ARRAY_SIZE(n35_devices));
539 }
119} 540}
120 541
121MACHINE_START(N30, "Acer-N30") 542MACHINE_START(N30, "Acer-N30")
@@ -131,9 +552,14 @@ MACHINE_START(N30, "Acer-N30")
131 .map_io = n30_map_io, 552 .map_io = n30_map_io,
132MACHINE_END 553MACHINE_END
133 554
134/* 555MACHINE_START(N35, "Acer-N35")
135 Local variables: 556 /* Maintainer: Christer Weinigel <christer@weinigel.se>
136 compile-command: "make ARCH=arm CROSS_COMPILE=/usr/local/arm/3.3.2/bin/arm-linux- -k -C ../../.." 557 */
137 c-basic-offset: 8 558 .phys_io = S3C2410_PA_UART,
138 End: 559 .io_pg_offst = (((u32)S3C24XX_VA_UART) >> 18) & 0xfffc,
139*/ 560 .boot_params = S3C2410_SDRAM_PA + 0x100,
561 .timer = &s3c24xx_timer,
562 .init_machine = n30_init,
563 .init_irq = n30_init_irq,
564 .map_io = n30_map_io,
565MACHINE_END
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-06 13:44:01 -0500