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diff --git a/arch/arm/mach-s3c24xx/mach-gta02.c b/arch/arm/mach-s3c24xx/mach-gta02.c
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1/*
2 * linux/arch/arm/mach-s3c2442/mach-gta02.c
3 *
4 * S3C2442 Machine Support for Openmoko GTA02 / FreeRunner.
5 *
6 * Copyright (C) 2006-2009 by Openmoko, Inc.
7 * Authors: Harald Welte <laforge@openmoko.org>
8 * Andy Green <andy@openmoko.org>
9 * Werner Almesberger <werner@openmoko.org>
10 * All rights reserved.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
25 * MA 02111-1307 USA
26 *
27 */
28
29#include <linux/kernel.h>
30#include <linux/types.h>
31#include <linux/interrupt.h>
32#include <linux/list.h>
33#include <linux/delay.h>
34#include <linux/timer.h>
35#include <linux/init.h>
36#include <linux/gpio.h>
37#include <linux/workqueue.h>
38#include <linux/platform_device.h>
39#include <linux/serial_core.h>
40#include <linux/spi/spi.h>
41#include <linux/spi/s3c24xx.h>
42
43#include <linux/mmc/host.h>
44
45#include <linux/mtd/mtd.h>
46#include <linux/mtd/nand.h>
47#include <linux/mtd/nand_ecc.h>
48#include <linux/mtd/partitions.h>
49#include <linux/mtd/physmap.h>
50#include <linux/io.h>
51
52#include <linux/i2c.h>
53#include <linux/regulator/machine.h>
54
55#include <linux/mfd/pcf50633/core.h>
56#include <linux/mfd/pcf50633/mbc.h>
57#include <linux/mfd/pcf50633/adc.h>
58#include <linux/mfd/pcf50633/gpio.h>
59#include <linux/mfd/pcf50633/pmic.h>
60#include <linux/mfd/pcf50633/backlight.h>
61
62#include <linux/input.h>
63#include <linux/gpio_keys.h>
64
65#include <asm/mach/arch.h>
66#include <asm/mach/map.h>
67#include <asm/mach/irq.h>
68
69#include <asm/irq.h>
70#include <asm/mach-types.h>
71
72#include <mach/regs-irq.h>
73#include <mach/regs-gpio.h>
74#include <mach/regs-gpioj.h>
75#include <mach/fb.h>
76
77#include <plat/usb-control.h>
78#include <mach/regs-mem.h>
79#include <mach/hardware.h>
80
81#include <mach/gta02.h>
82
83#include <plat/regs-serial.h>
84#include <plat/nand.h>
85#include <plat/devs.h>
86#include <plat/cpu.h>
87#include <plat/pm.h>
88#include <plat/udc.h>
89#include <plat/gpio-cfg.h>
90#include <plat/iic.h>
91#include <plat/ts.h>
92
93#include "common.h"
94
95static struct pcf50633 *gta02_pcf;
96
97/*
98 * This gets called frequently when we paniced.
99 */
100
101static long gta02_panic_blink(int state)
102{
103 long delay = 0;
104 char led;
105
106 led = (state) ? 1 : 0;
107 gpio_direction_output(GTA02_GPIO_AUX_LED, led);
108
109 return delay;
110}
111
112
113static struct map_desc gta02_iodesc[] __initdata = {
114 {
115 .virtual = 0xe0000000,
116 .pfn = __phys_to_pfn(S3C2410_CS3 + 0x01000000),
117 .length = SZ_1M,
118 .type = MT_DEVICE
119 },
120};
121
122#define UCON (S3C2410_UCON_DEFAULT | S3C2443_UCON_RXERR_IRQEN)
123#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE | S3C2410_LCON_STOPB)
124#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
125
126static struct s3c2410_uartcfg gta02_uartcfgs[] = {
127 [0] = {
128 .hwport = 0,
129 .flags = 0,
130 .ucon = UCON,
131 .ulcon = ULCON,
132 .ufcon = UFCON,
133 },
134 [1] = {
135 .hwport = 1,
136 .flags = 0,
137 .ucon = UCON,
138 .ulcon = ULCON,
139 .ufcon = UFCON,
140 },
141 [2] = {
142 .hwport = 2,
143 .flags = 0,
144 .ucon = UCON,
145 .ulcon = ULCON,
146 .ufcon = UFCON,
147 },
148};
149
150#ifdef CONFIG_CHARGER_PCF50633
151/*
152 * On GTA02 the 1A charger features a 48K resistor to 0V on the ID pin.
153 * We use this to recognize that we can pull 1A from the USB socket.
154 *
155 * These constants are the measured pcf50633 ADC levels with the 1A
156 * charger / 48K resistor, and with no pulldown resistor.
157 */
158
159#define ADC_NOM_CHG_DETECT_1A 6
160#define ADC_NOM_CHG_DETECT_USB 43
161
162static void
163gta02_configure_pmu_for_charger(struct pcf50633 *pcf, void *unused, int res)
164{
165 int ma;
166
167 /* Interpret charger type */
168 if (res < ((ADC_NOM_CHG_DETECT_USB + ADC_NOM_CHG_DETECT_1A) / 2)) {
169
170 /*
171 * Sanity - stop GPO driving out now that we have a 1A charger
172 * GPO controls USB Host power generation on GTA02
173 */
174 pcf50633_gpio_set(pcf, PCF50633_GPO, 0);
175
176 ma = 1000;
177 } else
178 ma = 100;
179
180 pcf50633_mbc_usb_curlim_set(pcf, ma);
181}
182
183static struct delayed_work gta02_charger_work;
184static int gta02_usb_vbus_draw;
185
186static void gta02_charger_worker(struct work_struct *work)
187{
188 if (gta02_usb_vbus_draw) {
189 pcf50633_mbc_usb_curlim_set(gta02_pcf, gta02_usb_vbus_draw);
190 return;
191 }
192
193#ifdef CONFIG_PCF50633_ADC
194 pcf50633_adc_async_read(gta02_pcf,
195 PCF50633_ADCC1_MUX_ADCIN1,
196 PCF50633_ADCC1_AVERAGE_16,
197 gta02_configure_pmu_for_charger,
198 NULL);
199#else
200 /*
201 * If the PCF50633 ADC is disabled we fallback to a
202 * 100mA limit for safety.
203 */
204 pcf50633_mbc_usb_curlim_set(pcf, 100);
205#endif
206}
207
208#define GTA02_CHARGER_CONFIGURE_TIMEOUT ((3000 * HZ) / 1000)
209
210static void gta02_pmu_event_callback(struct pcf50633 *pcf, int irq)
211{
212 if (irq == PCF50633_IRQ_USBINS) {
213 schedule_delayed_work(&gta02_charger_work,
214 GTA02_CHARGER_CONFIGURE_TIMEOUT);
215
216 return;
217 }
218
219 if (irq == PCF50633_IRQ_USBREM) {
220 cancel_delayed_work_sync(&gta02_charger_work);
221 gta02_usb_vbus_draw = 0;
222 }
223}
224
225static void gta02_udc_vbus_draw(unsigned int ma)
226{
227 if (!gta02_pcf)
228 return;
229
230 gta02_usb_vbus_draw = ma;
231
232 schedule_delayed_work(&gta02_charger_work,
233 GTA02_CHARGER_CONFIGURE_TIMEOUT);
234}
235#else /* !CONFIG_CHARGER_PCF50633 */
236#define gta02_pmu_event_callback NULL
237#define gta02_udc_vbus_draw NULL
238#endif
239
240/*
241 * This is called when pc50633 is probed, unfortunately quite late in the
242 * day since it is an I2C bus device. Here we can belatedly define some
243 * platform devices with the advantage that we can mark the pcf50633 as the
244 * parent. This makes them get suspended and resumed with their parent
245 * the pcf50633 still around.
246 */
247
248static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf);
249
250
251static char *gta02_batteries[] = {
252 "battery",
253};
254
255static struct pcf50633_bl_platform_data gta02_backlight_data = {
256 .default_brightness = 0x3f,
257 .default_brightness_limit = 0,
258 .ramp_time = 5,
259};
260
261static struct pcf50633_platform_data gta02_pcf_pdata = {
262 .resumers = {
263 [0] = PCF50633_INT1_USBINS |
264 PCF50633_INT1_USBREM |
265 PCF50633_INT1_ALARM,
266 [1] = PCF50633_INT2_ONKEYF,
267 [2] = PCF50633_INT3_ONKEY1S,
268 [3] = PCF50633_INT4_LOWSYS |
269 PCF50633_INT4_LOWBAT |
270 PCF50633_INT4_HIGHTMP,
271 },
272
273 .batteries = gta02_batteries,
274 .num_batteries = ARRAY_SIZE(gta02_batteries),
275
276 .charger_reference_current_ma = 1000,
277
278 .backlight_data = &gta02_backlight_data,
279
280 .reg_init_data = {
281 [PCF50633_REGULATOR_AUTO] = {
282 .constraints = {
283 .min_uV = 3300000,
284 .max_uV = 3300000,
285 .valid_modes_mask = REGULATOR_MODE_NORMAL,
286 .always_on = 1,
287 .apply_uV = 1,
288 },
289 },
290 [PCF50633_REGULATOR_DOWN1] = {
291 .constraints = {
292 .min_uV = 1300000,
293 .max_uV = 1600000,
294 .valid_modes_mask = REGULATOR_MODE_NORMAL,
295 .always_on = 1,
296 .apply_uV = 1,
297 },
298 },
299 [PCF50633_REGULATOR_DOWN2] = {
300 .constraints = {
301 .min_uV = 1800000,
302 .max_uV = 1800000,
303 .valid_modes_mask = REGULATOR_MODE_NORMAL,
304 .apply_uV = 1,
305 .always_on = 1,
306 },
307 },
308 [PCF50633_REGULATOR_HCLDO] = {
309 .constraints = {
310 .min_uV = 2000000,
311 .max_uV = 3300000,
312 .valid_modes_mask = REGULATOR_MODE_NORMAL,
313 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
314 REGULATOR_CHANGE_STATUS,
315 },
316 },
317 [PCF50633_REGULATOR_LDO1] = {
318 .constraints = {
319 .min_uV = 3300000,
320 .max_uV = 3300000,
321 .valid_modes_mask = REGULATOR_MODE_NORMAL,
322 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
323 .apply_uV = 1,
324 },
325 },
326 [PCF50633_REGULATOR_LDO2] = {
327 .constraints = {
328 .min_uV = 3300000,
329 .max_uV = 3300000,
330 .valid_modes_mask = REGULATOR_MODE_NORMAL,
331 .apply_uV = 1,
332 },
333 },
334 [PCF50633_REGULATOR_LDO3] = {
335 .constraints = {
336 .min_uV = 3000000,
337 .max_uV = 3000000,
338 .valid_modes_mask = REGULATOR_MODE_NORMAL,
339 .apply_uV = 1,
340 },
341 },
342 [PCF50633_REGULATOR_LDO4] = {
343 .constraints = {
344 .min_uV = 3200000,
345 .max_uV = 3200000,
346 .valid_modes_mask = REGULATOR_MODE_NORMAL,
347 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
348 .apply_uV = 1,
349 },
350 },
351 [PCF50633_REGULATOR_LDO5] = {
352 .constraints = {
353 .min_uV = 3000000,
354 .max_uV = 3000000,
355 .valid_modes_mask = REGULATOR_MODE_NORMAL,
356 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
357 .apply_uV = 1,
358 },
359 },
360 [PCF50633_REGULATOR_LDO6] = {
361 .constraints = {
362 .min_uV = 3000000,
363 .max_uV = 3000000,
364 .valid_modes_mask = REGULATOR_MODE_NORMAL,
365 },
366 },
367 [PCF50633_REGULATOR_MEMLDO] = {
368 .constraints = {
369 .min_uV = 1800000,
370 .max_uV = 1800000,
371 .valid_modes_mask = REGULATOR_MODE_NORMAL,
372 },
373 },
374
375 },
376 .probe_done = gta02_pmu_attach_child_devices,
377 .mbc_event_callback = gta02_pmu_event_callback,
378};
379
380
381/* NOR Flash. */
382
383#define GTA02_FLASH_BASE 0x18000000 /* GCS3 */
384#define GTA02_FLASH_SIZE 0x200000 /* 2MBytes */
385
386static struct physmap_flash_data gta02_nor_flash_data = {
387 .width = 2,
388};
389
390static struct resource gta02_nor_flash_resource = {
391 .start = GTA02_FLASH_BASE,
392 .end = GTA02_FLASH_BASE + GTA02_FLASH_SIZE - 1,
393 .flags = IORESOURCE_MEM,
394};
395
396static struct platform_device gta02_nor_flash = {
397 .name = "physmap-flash",
398 .id = 0,
399 .dev = {
400 .platform_data = &gta02_nor_flash_data,
401 },
402 .resource = &gta02_nor_flash_resource,
403 .num_resources = 1,
404};
405
406
407static struct platform_device s3c24xx_pwm_device = {
408 .name = "s3c24xx_pwm",
409 .num_resources = 0,
410};
411
412static struct platform_device gta02_dfbmcs320_device = {
413 .name = "dfbmcs320",
414};
415
416static struct i2c_board_info gta02_i2c_devs[] __initdata = {
417 {
418 I2C_BOARD_INFO("pcf50633", 0x73),
419 .irq = GTA02_IRQ_PCF50633,
420 .platform_data = &gta02_pcf_pdata,
421 },
422 {
423 I2C_BOARD_INFO("wm8753", 0x1a),
424 },
425};
426
427static struct s3c2410_nand_set __initdata gta02_nand_sets[] = {
428 [0] = {
429 /*
430 * This name is also hard-coded in the boot loaders, so
431 * changing it would would require all users to upgrade
432 * their boot loaders, some of which are stored in a NOR
433 * that is considered to be immutable.
434 */
435 .name = "neo1973-nand",
436 .nr_chips = 1,
437 .flash_bbt = 1,
438 },
439};
440
441/*
442 * Choose a set of timings derived from S3C@2442B MCP54
443 * data sheet (K5D2G13ACM-D075 MCP Memory).
444 */
445
446static struct s3c2410_platform_nand __initdata gta02_nand_info = {
447 .tacls = 0,
448 .twrph0 = 25,
449 .twrph1 = 15,
450 .nr_sets = ARRAY_SIZE(gta02_nand_sets),
451 .sets = gta02_nand_sets,
452};
453
454
455/* Get PMU to set USB current limit accordingly. */
456static struct s3c2410_udc_mach_info gta02_udc_cfg __initdata = {
457 .vbus_draw = gta02_udc_vbus_draw,
458 .pullup_pin = GTA02_GPIO_USB_PULLUP,
459};
460
461/* USB */
462static struct s3c2410_hcd_info gta02_usb_info __initdata = {
463 .port[0] = {
464 .flags = S3C_HCDFLG_USED,
465 },
466 .port[1] = {
467 .flags = 0,
468 },
469};
470
471/* Touchscreen */
472static struct s3c2410_ts_mach_info gta02_ts_info = {
473 .delay = 10000,
474 .presc = 0xff, /* slow as we can go */
475 .oversampling_shift = 2,
476};
477
478/* Buttons */
479static struct gpio_keys_button gta02_buttons[] = {
480 {
481 .gpio = GTA02_GPIO_AUX_KEY,
482 .code = KEY_PHONE,
483 .desc = "Aux",
484 .type = EV_KEY,
485 .debounce_interval = 100,
486 },
487 {
488 .gpio = GTA02_GPIO_HOLD_KEY,
489 .code = KEY_PAUSE,
490 .desc = "Hold",
491 .type = EV_KEY,
492 .debounce_interval = 100,
493 },
494};
495
496static struct gpio_keys_platform_data gta02_buttons_pdata = {
497 .buttons = gta02_buttons,
498 .nbuttons = ARRAY_SIZE(gta02_buttons),
499};
500
501static struct platform_device gta02_buttons_device = {
502 .name = "gpio-keys",
503 .id = -1,
504 .dev = {
505 .platform_data = &gta02_buttons_pdata,
506 },
507};
508
509static void __init gta02_map_io(void)
510{
511 s3c24xx_init_io(gta02_iodesc, ARRAY_SIZE(gta02_iodesc));
512 s3c24xx_init_clocks(12000000);
513 s3c24xx_init_uarts(gta02_uartcfgs, ARRAY_SIZE(gta02_uartcfgs));
514}
515
516
517/* These are the guys that don't need to be children of PMU. */
518
519static struct platform_device *gta02_devices[] __initdata = {
520 &s3c_device_ohci,
521 &s3c_device_wdt,
522 &s3c_device_sdi,
523 &s3c_device_usbgadget,
524 &s3c_device_nand,
525 &gta02_nor_flash,
526 &s3c24xx_pwm_device,
527 &s3c_device_iis,
528 &samsung_asoc_dma,
529 &s3c_device_i2c0,
530 &gta02_dfbmcs320_device,
531 &gta02_buttons_device,
532 &s3c_device_adc,
533 &s3c_device_ts,
534};
535
536/* These guys DO need to be children of PMU. */
537
538static struct platform_device *gta02_devices_pmu_children[] = {
539};
540
541
542/*
543 * This is called when pc50633 is probed, quite late in the day since it is an
544 * I2C bus device. Here we can define platform devices with the advantage that
545 * we can mark the pcf50633 as the parent. This makes them get suspended and
546 * resumed with their parent the pcf50633 still around. All devices whose
547 * operation depends on something from pcf50633 must have this relationship
548 * made explicit like this, or suspend and resume will become an unreliable
549 * hellworld.
550 */
551
552static void gta02_pmu_attach_child_devices(struct pcf50633 *pcf)
553{
554 int n;
555
556 /* Grab a copy of the now probed PMU pointer. */
557 gta02_pcf = pcf;
558
559 for (n = 0; n < ARRAY_SIZE(gta02_devices_pmu_children); n++)
560 gta02_devices_pmu_children[n]->dev.parent = pcf->dev;
561
562 platform_add_devices(gta02_devices_pmu_children,
563 ARRAY_SIZE(gta02_devices_pmu_children));
564}
565
566static void gta02_poweroff(void)
567{
568 pcf50633_reg_set_bit_mask(gta02_pcf, PCF50633_REG_OOCSHDWN, 1, 1);
569}
570
571static void __init gta02_machine_init(void)
572{
573 /* Set the panic callback to turn AUX LED on or off. */
574 panic_blink = gta02_panic_blink;
575
576 s3c_pm_init();
577
578#ifdef CONFIG_CHARGER_PCF50633
579 INIT_DELAYED_WORK(&gta02_charger_work, gta02_charger_worker);
580#endif
581
582 s3c24xx_udc_set_platdata(&gta02_udc_cfg);
583 s3c24xx_ts_set_platdata(&gta02_ts_info);
584 s3c_ohci_set_platdata(&gta02_usb_info);
585 s3c_nand_set_platdata(&gta02_nand_info);
586 s3c_i2c0_set_platdata(NULL);
587
588 i2c_register_board_info(0, gta02_i2c_devs, ARRAY_SIZE(gta02_i2c_devs));
589
590 platform_add_devices(gta02_devices, ARRAY_SIZE(gta02_devices));
591 pm_power_off = gta02_poweroff;
592
593 regulator_has_full_constraints();
594}
595
596
597MACHINE_START(NEO1973_GTA02, "GTA02")
598 /* Maintainer: Nelson Castillo <arhuaco@freaks-unidos.net> */
599 .atag_offset = 0x100,
600 .map_io = gta02_map_io,
601 .init_irq = s3c24xx_init_irq,
602 .init_machine = gta02_machine_init,
603 .timer = &s3c24xx_timer,
604 .restart = s3c2440_restart,
605MACHINE_END