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1/*
2 * Support for the Arcom ZEUS.
3 *
4 * Copyright (C) 2006 Arcom Control Systems Ltd.
5 *
6 * Loosely based on Arcom's 2.6.16.28.
7 * Maintained by Marc Zyngier <maz@misterjones.org>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/cpufreq.h>
15#include <linux/interrupt.h>
16#include <linux/irq.h>
17#include <linux/pm.h>
18#include <linux/gpio.h>
19#include <linux/serial_8250.h>
20#include <linux/dm9000.h>
21#include <linux/mmc/host.h>
22#include <linux/spi/spi.h>
23#include <linux/spi/pxa2xx_spi.h>
24#include <linux/mtd/mtd.h>
25#include <linux/mtd/partitions.h>
26#include <linux/mtd/physmap.h>
27#include <linux/i2c.h>
28#include <linux/i2c/pxa-i2c.h>
29#include <linux/platform_data/pca953x.h>
30#include <linux/apm-emulation.h>
31#include <linux/can/platform/mcp251x.h>
32#include <linux/regulator/fixed.h>
33#include <linux/regulator/machine.h>
34
35#include <asm/mach-types.h>
36#include <asm/suspend.h>
37#include <asm/system_info.h>
38#include <asm/mach/arch.h>
39#include <asm/mach/map.h>
40
41#include "pxa27x.h"
42#include <mach/regs-uart.h>
43#include <linux/platform_data/usb-ohci-pxa27x.h>
44#include <linux/platform_data/mmc-pxamci.h>
45#include "pxa27x-udc.h"
46#include "udc.h"
47#include <linux/platform_data/video-pxafb.h>
48#include "pm.h"
49#include <mach/audio.h>
50#include <linux/platform_data/pcmcia-pxa2xx_viper.h>
51#include "zeus.h"
52#include <mach/smemc.h>
53
54#include "generic.h"
55
56/*
57 * Interrupt handling
58 */
59
60static unsigned long zeus_irq_enabled_mask;
61static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
62static const int zeus_isa_irq_map[] = {
63 0, /* ISA irq #0, invalid */
64 0, /* ISA irq #1, invalid */
65 0, /* ISA irq #2, invalid */
66 1 << 0, /* ISA irq #3 */
67 1 << 1, /* ISA irq #4 */
68 1 << 2, /* ISA irq #5 */
69 1 << 3, /* ISA irq #6 */
70 1 << 4, /* ISA irq #7 */
71 0, /* ISA irq #8, invalid */
72 0, /* ISA irq #9, invalid */
73 1 << 5, /* ISA irq #10 */
74 1 << 6, /* ISA irq #11 */
75 1 << 7, /* ISA irq #12 */
76};
77
78static inline int zeus_irq_to_bitmask(unsigned int irq)
79{
80 return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
81}
82
83static inline int zeus_bit_to_irq(int bit)
84{
85 return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
86}
87
88static void zeus_ack_irq(struct irq_data *d)
89{
90 __raw_writew(zeus_irq_to_bitmask(d->irq), ZEUS_CPLD_ISA_IRQ);
91}
92
93static void zeus_mask_irq(struct irq_data *d)
94{
95 zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(d->irq));
96}
97
98static void zeus_unmask_irq(struct irq_data *d)
99{
100 zeus_irq_enabled_mask |= zeus_irq_to_bitmask(d->irq);
101}
102
103static inline unsigned long zeus_irq_pending(void)
104{
105 return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
106}
107
108static void zeus_irq_handler(struct irq_desc *desc)
109{
110 unsigned int irq;
111 unsigned long pending;
112
113 pending = zeus_irq_pending();
114 do {
115 /* we're in a chained irq handler,
116 * so ack the interrupt by hand */
117 desc->irq_data.chip->irq_ack(&desc->irq_data);
118
119 if (likely(pending)) {
120 irq = zeus_bit_to_irq(__ffs(pending));
121 generic_handle_irq(irq);
122 }
123 pending = zeus_irq_pending();
124 } while (pending);
125}
126
127static struct irq_chip zeus_irq_chip = {
128 .name = "ISA",
129 .irq_ack = zeus_ack_irq,
130 .irq_mask = zeus_mask_irq,
131 .irq_unmask = zeus_unmask_irq,
132};
133
134static void __init zeus_init_irq(void)
135{
136 int level;
137 int isa_irq;
138
139 pxa27x_init_irq();
140
141 /* Peripheral IRQs. It would be nice to move those inside driver
142 configuration, but it is not supported at the moment. */
143 irq_set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO), IRQ_TYPE_EDGE_RISING);
144 irq_set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO), IRQ_TYPE_EDGE_RISING);
145 irq_set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO), IRQ_TYPE_EDGE_RISING);
146 irq_set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO),
147 IRQ_TYPE_EDGE_FALLING);
148 irq_set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO), IRQ_TYPE_EDGE_FALLING);
149
150 /* Setup ISA IRQs */
151 for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) {
152 isa_irq = zeus_bit_to_irq(level);
153 irq_set_chip_and_handler(isa_irq, &zeus_irq_chip,
154 handle_edge_irq);
155 irq_clear_status_flags(isa_irq, IRQ_NOREQUEST | IRQ_NOPROBE);
156 }
157
158 irq_set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING);
159 irq_set_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler);
160}
161
162
163/*
164 * Platform devices
165 */
166
167/* Flash */
168static struct resource zeus_mtd_resources[] = {
169 [0] = { /* NOR Flash (up to 64MB) */
170 .start = ZEUS_FLASH_PHYS,
171 .end = ZEUS_FLASH_PHYS + SZ_64M - 1,
172 .flags = IORESOURCE_MEM,
173 },
174 [1] = { /* SRAM */
175 .start = ZEUS_SRAM_PHYS,
176 .end = ZEUS_SRAM_PHYS + SZ_512K - 1,
177 .flags = IORESOURCE_MEM,
178 },
179};
180
181static struct physmap_flash_data zeus_flash_data[] = {
182 [0] = {
183 .width = 2,
184 .parts = NULL,
185 .nr_parts = 0,
186 },
187};
188
189static struct platform_device zeus_mtd_devices[] = {
190 [0] = {
191 .name = "physmap-flash",
192 .id = 0,
193 .dev = {
194 .platform_data = &zeus_flash_data[0],
195 },
196 .resource = &zeus_mtd_resources[0],
197 .num_resources = 1,
198 },
199};
200
201/* Serial */
202static struct resource zeus_serial_resources[] = {
203 {
204 .start = 0x10000000,
205 .end = 0x1000000f,
206 .flags = IORESOURCE_MEM,
207 },
208 {
209 .start = 0x10800000,
210 .end = 0x1080000f,
211 .flags = IORESOURCE_MEM,
212 },
213 {
214 .start = 0x11000000,
215 .end = 0x1100000f,
216 .flags = IORESOURCE_MEM,
217 },
218 {
219 .start = 0x40100000,
220 .end = 0x4010001f,
221 .flags = IORESOURCE_MEM,
222 },
223 {
224 .start = 0x40200000,
225 .end = 0x4020001f,
226 .flags = IORESOURCE_MEM,
227 },
228 {
229 .start = 0x40700000,
230 .end = 0x4070001f,
231 .flags = IORESOURCE_MEM,
232 },
233};
234
235static struct plat_serial8250_port serial_platform_data[] = {
236 /* External UARTs */
237 /* FIXME: Shared IRQs on COM1-COM4 will not work properly on v1i1 hardware. */
238 { /* COM1 */
239 .mapbase = 0x10000000,
240 .irq = PXA_GPIO_TO_IRQ(ZEUS_UARTA_GPIO),
241 .irqflags = IRQF_TRIGGER_RISING,
242 .uartclk = 14745600,
243 .regshift = 1,
244 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
245 .iotype = UPIO_MEM,
246 },
247 { /* COM2 */
248 .mapbase = 0x10800000,
249 .irq = PXA_GPIO_TO_IRQ(ZEUS_UARTB_GPIO),
250 .irqflags = IRQF_TRIGGER_RISING,
251 .uartclk = 14745600,
252 .regshift = 1,
253 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
254 .iotype = UPIO_MEM,
255 },
256 { /* COM3 */
257 .mapbase = 0x11000000,
258 .irq = PXA_GPIO_TO_IRQ(ZEUS_UARTC_GPIO),
259 .irqflags = IRQF_TRIGGER_RISING,
260 .uartclk = 14745600,
261 .regshift = 1,
262 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
263 .iotype = UPIO_MEM,
264 },
265 { /* COM4 */
266 .mapbase = 0x11800000,
267 .irq = PXA_GPIO_TO_IRQ(ZEUS_UARTD_GPIO),
268 .irqflags = IRQF_TRIGGER_RISING,
269 .uartclk = 14745600,
270 .regshift = 1,
271 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
272 .iotype = UPIO_MEM,
273 },
274 /* Internal UARTs */
275 { /* FFUART */
276 .membase = (void *)&FFUART,
277 .mapbase = __PREG(FFUART),
278 .irq = IRQ_FFUART,
279 .uartclk = 921600 * 16,
280 .regshift = 2,
281 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
282 .iotype = UPIO_MEM,
283 },
284 { /* BTUART */
285 .membase = (void *)&BTUART,
286 .mapbase = __PREG(BTUART),
287 .irq = IRQ_BTUART,
288 .uartclk = 921600 * 16,
289 .regshift = 2,
290 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
291 .iotype = UPIO_MEM,
292 },
293 { /* STUART */
294 .membase = (void *)&STUART,
295 .mapbase = __PREG(STUART),
296 .irq = IRQ_STUART,
297 .uartclk = 921600 * 16,
298 .regshift = 2,
299 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
300 .iotype = UPIO_MEM,
301 },
302 { },
303};
304
305static struct platform_device zeus_serial_device = {
306 .name = "serial8250",
307 .id = PLAT8250_DEV_PLATFORM,
308 .dev = {
309 .platform_data = serial_platform_data,
310 },
311 .num_resources = ARRAY_SIZE(zeus_serial_resources),
312 .resource = zeus_serial_resources,
313};
314
315/* Ethernet */
316static struct resource zeus_dm9k0_resource[] = {
317 [0] = {
318 .start = ZEUS_ETH0_PHYS,
319 .end = ZEUS_ETH0_PHYS + 1,
320 .flags = IORESOURCE_MEM
321 },
322 [1] = {
323 .start = ZEUS_ETH0_PHYS + 2,
324 .end = ZEUS_ETH0_PHYS + 3,
325 .flags = IORESOURCE_MEM
326 },
327 [2] = {
328 .start = PXA_GPIO_TO_IRQ(ZEUS_ETH0_GPIO),
329 .end = PXA_GPIO_TO_IRQ(ZEUS_ETH0_GPIO),
330 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
331 },
332};
333
334static struct resource zeus_dm9k1_resource[] = {
335 [0] = {
336 .start = ZEUS_ETH1_PHYS,
337 .end = ZEUS_ETH1_PHYS + 1,
338 .flags = IORESOURCE_MEM
339 },
340 [1] = {
341 .start = ZEUS_ETH1_PHYS + 2,
342 .end = ZEUS_ETH1_PHYS + 3,
343 .flags = IORESOURCE_MEM,
344 },
345 [2] = {
346 .start = PXA_GPIO_TO_IRQ(ZEUS_ETH1_GPIO),
347 .end = PXA_GPIO_TO_IRQ(ZEUS_ETH1_GPIO),
348 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
349 },
350};
351
352static struct dm9000_plat_data zeus_dm9k_platdata = {
353 .flags = DM9000_PLATF_16BITONLY,
354};
355
356static struct platform_device zeus_dm9k0_device = {
357 .name = "dm9000",
358 .id = 0,
359 .num_resources = ARRAY_SIZE(zeus_dm9k0_resource),
360 .resource = zeus_dm9k0_resource,
361 .dev = {
362 .platform_data = &zeus_dm9k_platdata,
363 }
364};
365
366static struct platform_device zeus_dm9k1_device = {
367 .name = "dm9000",
368 .id = 1,
369 .num_resources = ARRAY_SIZE(zeus_dm9k1_resource),
370 .resource = zeus_dm9k1_resource,
371 .dev = {
372 .platform_data = &zeus_dm9k_platdata,
373 }
374};
375
376/* External SRAM */
377static struct resource zeus_sram_resource = {
378 .start = ZEUS_SRAM_PHYS,
379 .end = ZEUS_SRAM_PHYS + ZEUS_SRAM_SIZE * 2 - 1,
380 .flags = IORESOURCE_MEM,
381};
382
383static struct platform_device zeus_sram_device = {
384 .name = "pxa2xx-8bit-sram",
385 .id = 0,
386 .num_resources = 1,
387 .resource = &zeus_sram_resource,
388};
389
390/* SPI interface on SSP3 */
391static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = {
392 .num_chipselect = 1,
393 .enable_dma = 1,
394};
395
396/* CAN bus on SPI */
397static struct regulator_consumer_supply can_regulator_consumer =
398 REGULATOR_SUPPLY("vdd", "spi3.0");
399
400static struct regulator_init_data can_regulator_init_data = {
401 .constraints = {
402 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
403 },
404 .consumer_supplies = &can_regulator_consumer,
405 .num_consumer_supplies = 1,
406};
407
408static struct fixed_voltage_config can_regulator_pdata = {
409 .supply_name = "CAN_SHDN",
410 .microvolts = 3300000,
411 .gpio = ZEUS_CAN_SHDN_GPIO,
412 .init_data = &can_regulator_init_data,
413};
414
415static struct platform_device can_regulator_device = {
416 .name = "reg-fixed-voltage",
417 .id = 0,
418 .dev = {
419 .platform_data = &can_regulator_pdata,
420 },
421};
422
423static struct mcp251x_platform_data zeus_mcp2515_pdata = {
424 .oscillator_frequency = 16*1000*1000,
425};
426
427static struct spi_board_info zeus_spi_board_info[] = {
428 [0] = {
429 .modalias = "mcp2515",
430 .platform_data = &zeus_mcp2515_pdata,
431 .irq = PXA_GPIO_TO_IRQ(ZEUS_CAN_GPIO),
432 .max_speed_hz = 1*1000*1000,
433 .bus_num = 3,
434 .mode = SPI_MODE_0,
435 .chip_select = 0,
436 },
437};
438
439/* Leds */
440static struct gpio_led zeus_leds[] = {
441 [0] = {
442 .name = "zeus:yellow:1",
443 .default_trigger = "heartbeat",
444 .gpio = ZEUS_EXT0_GPIO(3),
445 .active_low = 1,
446 },
447 [1] = {
448 .name = "zeus:yellow:2",
449 .default_trigger = "default-on",
450 .gpio = ZEUS_EXT0_GPIO(4),
451 .active_low = 1,
452 },
453 [2] = {
454 .name = "zeus:yellow:3",
455 .default_trigger = "default-on",
456 .gpio = ZEUS_EXT0_GPIO(5),
457 .active_low = 1,
458 },
459};
460
461static struct gpio_led_platform_data zeus_leds_info = {
462 .leds = zeus_leds,
463 .num_leds = ARRAY_SIZE(zeus_leds),
464};
465
466static struct platform_device zeus_leds_device = {
467 .name = "leds-gpio",
468 .id = -1,
469 .dev = {
470 .platform_data = &zeus_leds_info,
471 },
472};
473
474static void zeus_cf_reset(int state)
475{
476 u16 cpld_state = __raw_readw(ZEUS_CPLD_CONTROL);
477
478 if (state)
479 cpld_state |= ZEUS_CPLD_CONTROL_CF_RST;
480 else
481 cpld_state &= ~ZEUS_CPLD_CONTROL_CF_RST;
482
483 __raw_writew(cpld_state, ZEUS_CPLD_CONTROL);
484}
485
486static struct arcom_pcmcia_pdata zeus_pcmcia_info = {
487 .cd_gpio = ZEUS_CF_CD_GPIO,
488 .rdy_gpio = ZEUS_CF_RDY_GPIO,
489 .pwr_gpio = ZEUS_CF_PWEN_GPIO,
490 .reset = zeus_cf_reset,
491};
492
493static struct platform_device zeus_pcmcia_device = {
494 .name = "zeus-pcmcia",
495 .id = -1,
496 .dev = {
497 .platform_data = &zeus_pcmcia_info,
498 },
499};
500
501static struct resource zeus_max6369_resource = {
502 .start = ZEUS_CPLD_EXTWDOG_PHYS,
503 .end = ZEUS_CPLD_EXTWDOG_PHYS,
504 .flags = IORESOURCE_MEM,
505};
506
507struct platform_device zeus_max6369_device = {
508 .name = "max6369_wdt",
509 .id = -1,
510 .resource = &zeus_max6369_resource,
511 .num_resources = 1,
512};
513
514/* AC'97 */
515static pxa2xx_audio_ops_t zeus_ac97_info = {
516 .reset_gpio = 95,
517};
518
519
520/*
521 * USB host
522 */
523
524static struct regulator_consumer_supply zeus_ohci_regulator_supplies[] = {
525 REGULATOR_SUPPLY("vbus2", "pxa27x-ohci"),
526};
527
528static struct regulator_init_data zeus_ohci_regulator_data = {
529 .constraints = {
530 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
531 },
532 .num_consumer_supplies = ARRAY_SIZE(zeus_ohci_regulator_supplies),
533 .consumer_supplies = zeus_ohci_regulator_supplies,
534};
535
536static struct fixed_voltage_config zeus_ohci_regulator_config = {
537 .supply_name = "vbus2",
538 .microvolts = 5000000, /* 5.0V */
539 .gpio = ZEUS_USB2_PWREN_GPIO,
540 .enable_high = 1,
541 .startup_delay = 0,
542 .init_data = &zeus_ohci_regulator_data,
543};
544
545static struct platform_device zeus_ohci_regulator_device = {
546 .name = "reg-fixed-voltage",
547 .id = 1,
548 .dev = {
549 .platform_data = &zeus_ohci_regulator_config,
550 },
551};
552
553static struct pxaohci_platform_data zeus_ohci_platform_data = {
554 .port_mode = PMM_NPS_MODE,
555 /* Clear Power Control Polarity Low and set Power Sense
556 * Polarity Low. Supply power to USB ports. */
557 .flags = ENABLE_PORT_ALL | POWER_SENSE_LOW,
558};
559
560static void zeus_register_ohci(void)
561{
562 /* Port 2 is shared between host and client interface. */
563 UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
564
565 pxa_set_ohci_info(&zeus_ohci_platform_data);
566}
567
568/*
569 * Flat Panel
570 */
571
572static void zeus_lcd_power(int on, struct fb_var_screeninfo *si)
573{
574 gpio_set_value(ZEUS_LCD_EN_GPIO, on);
575}
576
577static void zeus_backlight_power(int on)
578{
579 gpio_set_value(ZEUS_BKLEN_GPIO, on);
580}
581
582static int zeus_setup_fb_gpios(void)
583{
584 int err;
585
586 if ((err = gpio_request(ZEUS_LCD_EN_GPIO, "LCD_EN")))
587 goto out_err;
588
589 if ((err = gpio_direction_output(ZEUS_LCD_EN_GPIO, 0)))
590 goto out_err_lcd;
591
592 if ((err = gpio_request(ZEUS_BKLEN_GPIO, "BKLEN")))
593 goto out_err_lcd;
594
595 if ((err = gpio_direction_output(ZEUS_BKLEN_GPIO, 0)))
596 goto out_err_bkl;
597
598 return 0;
599
600out_err_bkl:
601 gpio_free(ZEUS_BKLEN_GPIO);
602out_err_lcd:
603 gpio_free(ZEUS_LCD_EN_GPIO);
604out_err:
605 return err;
606}
607
608static struct pxafb_mode_info zeus_fb_mode_info[] = {
609 {
610 .pixclock = 39722,
611
612 .xres = 640,
613 .yres = 480,
614
615 .bpp = 16,
616
617 .hsync_len = 63,
618 .left_margin = 16,
619 .right_margin = 81,
620
621 .vsync_len = 2,
622 .upper_margin = 12,
623 .lower_margin = 31,
624
625 .sync = 0,
626 },
627};
628
629static struct pxafb_mach_info zeus_fb_info = {
630 .modes = zeus_fb_mode_info,
631 .num_modes = 1,
632 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
633 .pxafb_lcd_power = zeus_lcd_power,
634 .pxafb_backlight_power = zeus_backlight_power,
635};
636
637/*
638 * MMC/SD Device
639 *
640 * The card detect interrupt isn't debounced so we delay it by 250ms
641 * to give the card a chance to fully insert/eject.
642 */
643
644static struct pxamci_platform_data zeus_mci_platform_data = {
645 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
646 .detect_delay_ms = 250,
647 .gpio_card_detect = ZEUS_MMC_CD_GPIO,
648 .gpio_card_ro = ZEUS_MMC_WP_GPIO,
649 .gpio_card_ro_invert = 1,
650 .gpio_power = -1
651};
652
653/*
654 * USB Device Controller
655 */
656static void zeus_udc_command(int cmd)
657{
658 switch (cmd) {
659 case PXA2XX_UDC_CMD_DISCONNECT:
660 pr_info("zeus: disconnecting USB client\n");
661 UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
662 break;
663
664 case PXA2XX_UDC_CMD_CONNECT:
665 pr_info("zeus: connecting USB client\n");
666 UP2OCR = UP2OCR_HXOE | UP2OCR_DPPUE;
667 break;
668 }
669}
670
671static struct pxa2xx_udc_mach_info zeus_udc_info = {
672 .udc_command = zeus_udc_command,
673};
674
675static struct platform_device *zeus_devices[] __initdata = {
676 &zeus_serial_device,
677 &zeus_mtd_devices[0],
678 &zeus_dm9k0_device,
679 &zeus_dm9k1_device,
680 &zeus_sram_device,
681 &zeus_leds_device,
682 &zeus_pcmcia_device,
683 &zeus_max6369_device,
684 &can_regulator_device,
685 &zeus_ohci_regulator_device,
686};
687
688#ifdef CONFIG_PM
689static void zeus_power_off(void)
690{
691 local_irq_disable();
692 cpu_suspend(PWRMODE_DEEPSLEEP, pxa27x_finish_suspend);
693}
694#else
695#define zeus_power_off NULL
696#endif
697
698#ifdef CONFIG_APM_EMULATION
699static void zeus_get_power_status(struct apm_power_info *info)
700{
701 /* Power supply is always present */
702 info->ac_line_status = APM_AC_ONLINE;
703 info->battery_status = APM_BATTERY_STATUS_NOT_PRESENT;
704 info->battery_flag = APM_BATTERY_FLAG_NOT_PRESENT;
705}
706
707static inline void zeus_setup_apm(void)
708{
709 apm_get_power_status = zeus_get_power_status;
710}
711#else
712static inline void zeus_setup_apm(void)
713{
714}
715#endif
716
717static int zeus_get_pcb_info(struct i2c_client *client, unsigned gpio,
718 unsigned ngpio, void *context)
719{
720 int i;
721 u8 pcb_info = 0;
722
723 for (i = 0; i < 8; i++) {
724 int pcb_bit = gpio + i + 8;
725
726 if (gpio_request(pcb_bit, "pcb info")) {
727 dev_err(&client->dev, "Can't request pcb info %d\n", i);
728 continue;
729 }
730
731 if (gpio_direction_input(pcb_bit)) {
732 dev_err(&client->dev, "Can't read pcb info %d\n", i);
733 gpio_free(pcb_bit);
734 continue;
735 }
736
737 pcb_info |= !!gpio_get_value(pcb_bit) << i;
738
739 gpio_free(pcb_bit);
740 }
741
742 dev_info(&client->dev, "Zeus PCB version %d issue %d\n",
743 pcb_info >> 4, pcb_info & 0xf);
744
745 return 0;
746}
747
748static struct pca953x_platform_data zeus_pca953x_pdata[] = {
749 [0] = { .gpio_base = ZEUS_EXT0_GPIO_BASE, },
750 [1] = {
751 .gpio_base = ZEUS_EXT1_GPIO_BASE,
752 .setup = zeus_get_pcb_info,
753 },
754 [2] = { .gpio_base = ZEUS_USER_GPIO_BASE, },
755};
756
757static struct i2c_board_info __initdata zeus_i2c_devices[] = {
758 {
759 I2C_BOARD_INFO("pca9535", 0x21),
760 .platform_data = &zeus_pca953x_pdata[0],
761 },
762 {
763 I2C_BOARD_INFO("pca9535", 0x22),
764 .platform_data = &zeus_pca953x_pdata[1],
765 },
766 {
767 I2C_BOARD_INFO("pca9535", 0x20),
768 .platform_data = &zeus_pca953x_pdata[2],
769 .irq = PXA_GPIO_TO_IRQ(ZEUS_EXTGPIO_GPIO),
770 },
771 { I2C_BOARD_INFO("lm75a", 0x48) },
772 { I2C_BOARD_INFO("24c01", 0x50) },
773 { I2C_BOARD_INFO("isl1208", 0x6f) },
774};
775
776static mfp_cfg_t zeus_pin_config[] __initdata = {
777 /* AC97 */
778 GPIO28_AC97_BITCLK,
779 GPIO29_AC97_SDATA_IN_0,
780 GPIO30_AC97_SDATA_OUT,
781 GPIO31_AC97_SYNC,
782
783 GPIO15_nCS_1,
784 GPIO78_nCS_2,
785 GPIO80_nCS_4,
786 GPIO33_nCS_5,
787
788 GPIO22_GPIO,
789 GPIO32_MMC_CLK,
790 GPIO92_MMC_DAT_0,
791 GPIO109_MMC_DAT_1,
792 GPIO110_MMC_DAT_2,
793 GPIO111_MMC_DAT_3,
794 GPIO112_MMC_CMD,
795
796 GPIO88_USBH1_PWR,
797 GPIO89_USBH1_PEN,
798 GPIO119_USBH2_PWR,
799 GPIO120_USBH2_PEN,
800
801 GPIO86_LCD_LDD_16,
802 GPIO87_LCD_LDD_17,
803
804 GPIO102_GPIO,
805 GPIO104_CIF_DD_2,
806 GPIO105_CIF_DD_1,
807
808 GPIO81_SSP3_TXD,
809 GPIO82_SSP3_RXD,
810 GPIO83_SSP3_SFRM,
811 GPIO84_SSP3_SCLK,
812
813 GPIO48_nPOE,
814 GPIO49_nPWE,
815 GPIO50_nPIOR,
816 GPIO51_nPIOW,
817 GPIO85_nPCE_1,
818 GPIO54_nPCE_2,
819 GPIO79_PSKTSEL,
820 GPIO55_nPREG,
821 GPIO56_nPWAIT,
822 GPIO57_nIOIS16,
823 GPIO36_GPIO, /* CF CD */
824 GPIO97_GPIO, /* CF PWREN */
825 GPIO99_GPIO, /* CF RDY */
826};
827
828/*
829 * DM9k MSCx settings: SRAM, 16 bits
830 * 17 cycles delay first access
831 * 5 cycles delay next access
832 * 13 cycles recovery time
833 * faster device
834 */
835#define DM9K_MSC_VALUE 0xe4c9
836
837static void __init zeus_init(void)
838{
839 u16 dm9000_msc = DM9K_MSC_VALUE;
840 u32 msc0, msc1;
841
842 system_rev = __raw_readw(ZEUS_CPLD_VERSION);
843 pr_info("Zeus CPLD V%dI%d\n", (system_rev & 0xf0) >> 4, (system_rev & 0x0f));
844
845 /* Fix timings for dm9000s (CS1/CS2)*/
846 msc0 = (__raw_readl(MSC0) & 0x0000ffff) | (dm9000_msc << 16);
847 msc1 = (__raw_readl(MSC1) & 0xffff0000) | dm9000_msc;
848 __raw_writel(msc0, MSC0);
849 __raw_writel(msc1, MSC1);
850
851 pm_power_off = zeus_power_off;
852 zeus_setup_apm();
853
854 pxa2xx_mfp_config(ARRAY_AND_SIZE(zeus_pin_config));
855
856 platform_add_devices(zeus_devices, ARRAY_SIZE(zeus_devices));
857
858 zeus_register_ohci();
859
860 if (zeus_setup_fb_gpios())
861 pr_err("Failed to setup fb gpios\n");
862 else
863 pxa_set_fb_info(NULL, &zeus_fb_info);
864
865 pxa_set_mci_info(&zeus_mci_platform_data);
866 pxa_set_udc_info(&zeus_udc_info);
867 pxa_set_ac97_info(&zeus_ac97_info);
868 pxa_set_i2c_info(NULL);
869 i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
870 pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
871 spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
872
873 regulator_has_full_constraints();
874}
875
876static struct map_desc zeus_io_desc[] __initdata = {
877 {
878 .virtual = (unsigned long)ZEUS_CPLD_VERSION,
879 .pfn = __phys_to_pfn(ZEUS_CPLD_VERSION_PHYS),
880 .length = 0x1000,
881 .type = MT_DEVICE,
882 },
883 {
884 .virtual = (unsigned long)ZEUS_CPLD_ISA_IRQ,
885 .pfn = __phys_to_pfn(ZEUS_CPLD_ISA_IRQ_PHYS),
886 .length = 0x1000,
887 .type = MT_DEVICE,
888 },
889 {
890 .virtual = (unsigned long)ZEUS_CPLD_CONTROL,
891 .pfn = __phys_to_pfn(ZEUS_CPLD_CONTROL_PHYS),
892 .length = 0x1000,
893 .type = MT_DEVICE,
894 },
895 {
896 .virtual = (unsigned long)ZEUS_PC104IO,
897 .pfn = __phys_to_pfn(ZEUS_PC104IO_PHYS),
898 .length = 0x00800000,
899 .type = MT_DEVICE,
900 },
901};
902
903static void __init zeus_map_io(void)
904{
905 pxa27x_map_io();
906
907 iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc));
908
909 /* Clear PSPR to ensure a full restart on wake-up. */
910 PMCR = PSPR = 0;
911
912 /* enable internal 32.768Khz oscillator (ignore OSCC_OOK) */
913 writel(readl(OSCC) | OSCC_OON, OSCC);
914
915 /* Some clock cycles later (from OSCC_ON), programme PCFR (OPDE...).
916 * float chip selects and PCMCIA */
917 PCFR = PCFR_OPDE | PCFR_DC_EN | PCFR_FS | PCFR_FP;
918}
919
920MACHINE_START(ARCOM_ZEUS, "Arcom/Eurotech ZEUS")
921 /* Maintainer: Marc Zyngier <maz@misterjones.org> */
922 .atag_offset = 0x100,
923 .map_io = zeus_map_io,
924 .nr_irqs = ZEUS_NR_IRQS,
925 .init_irq = zeus_init_irq,
926 .handle_irq = pxa27x_handle_irq,
927 .init_time = pxa_timer_init,
928 .init_machine = zeus_init,
929 .restart = pxa_restart,
930MACHINE_END
931
1/*
2 * Support for the Arcom ZEUS.
3 *
4 * Copyright (C) 2006 Arcom Control Systems Ltd.
5 *
6 * Loosely based on Arcom's 2.6.16.28.
7 * Maintained by Marc Zyngier <maz@misterjones.org>
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/cpufreq.h>
15#include <linux/interrupt.h>
16#include <linux/irq.h>
17#include <linux/pm.h>
18#include <linux/gpio.h>
19#include <linux/serial_8250.h>
20#include <linux/dm9000.h>
21#include <linux/mmc/host.h>
22#include <linux/spi/spi.h>
23#include <linux/spi/pxa2xx_spi.h>
24#include <linux/mtd/mtd.h>
25#include <linux/mtd/partitions.h>
26#include <linux/mtd/physmap.h>
27#include <linux/i2c.h>
28#include <linux/i2c/pxa-i2c.h>
29#include <linux/platform_data/pca953x.h>
30#include <linux/apm-emulation.h>
31#include <linux/can/platform/mcp251x.h>
32#include <linux/regulator/fixed.h>
33#include <linux/regulator/machine.h>
34
35#include <asm/mach-types.h>
36#include <asm/suspend.h>
37#include <asm/system_info.h>
38#include <asm/mach/arch.h>
39#include <asm/mach/map.h>
40
41#include <mach/pxa27x.h>
42#include <mach/regs-uart.h>
43#include <linux/platform_data/usb-ohci-pxa27x.h>
44#include <linux/platform_data/mmc-pxamci.h>
45#include <mach/pxa27x-udc.h>
46#include <mach/udc.h>
47#include <linux/platform_data/video-pxafb.h>
48#include <mach/pm.h>
49#include <mach/audio.h>
50#include <linux/platform_data/pcmcia-pxa2xx_viper.h>
51#include <mach/zeus.h>
52#include <mach/smemc.h>
53
54#include "generic.h"
55
56/*
57 * Interrupt handling
58 */
59
60static unsigned long zeus_irq_enabled_mask;
61static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
62static const int zeus_isa_irq_map[] = {
63 0, /* ISA irq #0, invalid */
64 0, /* ISA irq #1, invalid */
65 0, /* ISA irq #2, invalid */
66 1 << 0, /* ISA irq #3 */
67 1 << 1, /* ISA irq #4 */
68 1 << 2, /* ISA irq #5 */
69 1 << 3, /* ISA irq #6 */
70 1 << 4, /* ISA irq #7 */
71 0, /* ISA irq #8, invalid */
72 0, /* ISA irq #9, invalid */
73 1 << 5, /* ISA irq #10 */
74 1 << 6, /* ISA irq #11 */
75 1 << 7, /* ISA irq #12 */
76};
77
78static inline int zeus_irq_to_bitmask(unsigned int irq)
79{
80 return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
81}
82
83static inline int zeus_bit_to_irq(int bit)
84{
85 return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
86}
87
88static void zeus_ack_irq(struct irq_data *d)
89{
90 __raw_writew(zeus_irq_to_bitmask(d->irq), ZEUS_CPLD_ISA_IRQ);
91}
92
93static void zeus_mask_irq(struct irq_data *d)
94{
95 zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(d->irq));
96}
97
98static void zeus_unmask_irq(struct irq_data *d)
99{
100 zeus_irq_enabled_mask |= zeus_irq_to_bitmask(d->irq);
101}
102
103static inline unsigned long zeus_irq_pending(void)
104{
105 return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
106}
107
108static void zeus_irq_handler(unsigned int irq, struct irq_desc *desc)
109{
110 unsigned long pending;
111
112 pending = zeus_irq_pending();
113 do {
114 /* we're in a chained irq handler,
115 * so ack the interrupt by hand */
116 desc->irq_data.chip->irq_ack(&desc->irq_data);
117
118 if (likely(pending)) {
119 irq = zeus_bit_to_irq(__ffs(pending));
120 generic_handle_irq(irq);
121 }
122 pending = zeus_irq_pending();
123 } while (pending);
124}
125
126static struct irq_chip zeus_irq_chip = {
127 .name = "ISA",
128 .irq_ack = zeus_ack_irq,
129 .irq_mask = zeus_mask_irq,
130 .irq_unmask = zeus_unmask_irq,
131};
132
133static void __init zeus_init_irq(void)
134{
135 int level;
136 int isa_irq;
137
138 pxa27x_init_irq();
139
140 /* Peripheral IRQs. It would be nice to move those inside driver
141 configuration, but it is not supported at the moment. */
142 irq_set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO), IRQ_TYPE_EDGE_RISING);
143 irq_set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO), IRQ_TYPE_EDGE_RISING);
144 irq_set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO), IRQ_TYPE_EDGE_RISING);
145 irq_set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO),
146 IRQ_TYPE_EDGE_FALLING);
147 irq_set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO), IRQ_TYPE_EDGE_FALLING);
148
149 /* Setup ISA IRQs */
150 for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) {
151 isa_irq = zeus_bit_to_irq(level);
152 irq_set_chip_and_handler(isa_irq, &zeus_irq_chip,
153 handle_edge_irq);
154 set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE);
155 }
156
157 irq_set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING);
158 irq_set_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler);
159}
160
161
162/*
163 * Platform devices
164 */
165
166/* Flash */
167static struct resource zeus_mtd_resources[] = {
168 [0] = { /* NOR Flash (up to 64MB) */
169 .start = ZEUS_FLASH_PHYS,
170 .end = ZEUS_FLASH_PHYS + SZ_64M - 1,
171 .flags = IORESOURCE_MEM,
172 },
173 [1] = { /* SRAM */
174 .start = ZEUS_SRAM_PHYS,
175 .end = ZEUS_SRAM_PHYS + SZ_512K - 1,
176 .flags = IORESOURCE_MEM,
177 },
178};
179
180static struct physmap_flash_data zeus_flash_data[] = {
181 [0] = {
182 .width = 2,
183 .parts = NULL,
184 .nr_parts = 0,
185 },
186};
187
188static struct platform_device zeus_mtd_devices[] = {
189 [0] = {
190 .name = "physmap-flash",
191 .id = 0,
192 .dev = {
193 .platform_data = &zeus_flash_data[0],
194 },
195 .resource = &zeus_mtd_resources[0],
196 .num_resources = 1,
197 },
198};
199
200/* Serial */
201static struct resource zeus_serial_resources[] = {
202 {
203 .start = 0x10000000,
204 .end = 0x1000000f,
205 .flags = IORESOURCE_MEM,
206 },
207 {
208 .start = 0x10800000,
209 .end = 0x1080000f,
210 .flags = IORESOURCE_MEM,
211 },
212 {
213 .start = 0x11000000,
214 .end = 0x1100000f,
215 .flags = IORESOURCE_MEM,
216 },
217 {
218 .start = 0x40100000,
219 .end = 0x4010001f,
220 .flags = IORESOURCE_MEM,
221 },
222 {
223 .start = 0x40200000,
224 .end = 0x4020001f,
225 .flags = IORESOURCE_MEM,
226 },
227 {
228 .start = 0x40700000,
229 .end = 0x4070001f,
230 .flags = IORESOURCE_MEM,
231 },
232};
233
234static struct plat_serial8250_port serial_platform_data[] = {
235 /* External UARTs */
236 /* FIXME: Shared IRQs on COM1-COM4 will not work properly on v1i1 hardware. */
237 { /* COM1 */
238 .mapbase = 0x10000000,
239 .irq = PXA_GPIO_TO_IRQ(ZEUS_UARTA_GPIO),
240 .irqflags = IRQF_TRIGGER_RISING,
241 .uartclk = 14745600,
242 .regshift = 1,
243 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
244 .iotype = UPIO_MEM,
245 },
246 { /* COM2 */
247 .mapbase = 0x10800000,
248 .irq = PXA_GPIO_TO_IRQ(ZEUS_UARTB_GPIO),
249 .irqflags = IRQF_TRIGGER_RISING,
250 .uartclk = 14745600,
251 .regshift = 1,
252 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
253 .iotype = UPIO_MEM,
254 },
255 { /* COM3 */
256 .mapbase = 0x11000000,
257 .irq = PXA_GPIO_TO_IRQ(ZEUS_UARTC_GPIO),
258 .irqflags = IRQF_TRIGGER_RISING,
259 .uartclk = 14745600,
260 .regshift = 1,
261 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
262 .iotype = UPIO_MEM,
263 },
264 { /* COM4 */
265 .mapbase = 0x11800000,
266 .irq = PXA_GPIO_TO_IRQ(ZEUS_UARTD_GPIO),
267 .irqflags = IRQF_TRIGGER_RISING,
268 .uartclk = 14745600,
269 .regshift = 1,
270 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
271 .iotype = UPIO_MEM,
272 },
273 /* Internal UARTs */
274 { /* FFUART */
275 .membase = (void *)&FFUART,
276 .mapbase = __PREG(FFUART),
277 .irq = IRQ_FFUART,
278 .uartclk = 921600 * 16,
279 .regshift = 2,
280 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
281 .iotype = UPIO_MEM,
282 },
283 { /* BTUART */
284 .membase = (void *)&BTUART,
285 .mapbase = __PREG(BTUART),
286 .irq = IRQ_BTUART,
287 .uartclk = 921600 * 16,
288 .regshift = 2,
289 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
290 .iotype = UPIO_MEM,
291 },
292 { /* STUART */
293 .membase = (void *)&STUART,
294 .mapbase = __PREG(STUART),
295 .irq = IRQ_STUART,
296 .uartclk = 921600 * 16,
297 .regshift = 2,
298 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
299 .iotype = UPIO_MEM,
300 },
301 { },
302};
303
304static struct platform_device zeus_serial_device = {
305 .name = "serial8250",
306 .id = PLAT8250_DEV_PLATFORM,
307 .dev = {
308 .platform_data = serial_platform_data,
309 },
310 .num_resources = ARRAY_SIZE(zeus_serial_resources),
311 .resource = zeus_serial_resources,
312};
313
314/* Ethernet */
315static struct resource zeus_dm9k0_resource[] = {
316 [0] = {
317 .start = ZEUS_ETH0_PHYS,
318 .end = ZEUS_ETH0_PHYS + 1,
319 .flags = IORESOURCE_MEM
320 },
321 [1] = {
322 .start = ZEUS_ETH0_PHYS + 2,
323 .end = ZEUS_ETH0_PHYS + 3,
324 .flags = IORESOURCE_MEM
325 },
326 [2] = {
327 .start = PXA_GPIO_TO_IRQ(ZEUS_ETH0_GPIO),
328 .end = PXA_GPIO_TO_IRQ(ZEUS_ETH0_GPIO),
329 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
330 },
331};
332
333static struct resource zeus_dm9k1_resource[] = {
334 [0] = {
335 .start = ZEUS_ETH1_PHYS,
336 .end = ZEUS_ETH1_PHYS + 1,
337 .flags = IORESOURCE_MEM
338 },
339 [1] = {
340 .start = ZEUS_ETH1_PHYS + 2,
341 .end = ZEUS_ETH1_PHYS + 3,
342 .flags = IORESOURCE_MEM,
343 },
344 [2] = {
345 .start = PXA_GPIO_TO_IRQ(ZEUS_ETH1_GPIO),
346 .end = PXA_GPIO_TO_IRQ(ZEUS_ETH1_GPIO),
347 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
348 },
349};
350
351static struct dm9000_plat_data zeus_dm9k_platdata = {
352 .flags = DM9000_PLATF_16BITONLY,
353};
354
355static struct platform_device zeus_dm9k0_device = {
356 .name = "dm9000",
357 .id = 0,
358 .num_resources = ARRAY_SIZE(zeus_dm9k0_resource),
359 .resource = zeus_dm9k0_resource,
360 .dev = {
361 .platform_data = &zeus_dm9k_platdata,
362 }
363};
364
365static struct platform_device zeus_dm9k1_device = {
366 .name = "dm9000",
367 .id = 1,
368 .num_resources = ARRAY_SIZE(zeus_dm9k1_resource),
369 .resource = zeus_dm9k1_resource,
370 .dev = {
371 .platform_data = &zeus_dm9k_platdata,
372 }
373};
374
375/* External SRAM */
376static struct resource zeus_sram_resource = {
377 .start = ZEUS_SRAM_PHYS,
378 .end = ZEUS_SRAM_PHYS + ZEUS_SRAM_SIZE * 2 - 1,
379 .flags = IORESOURCE_MEM,
380};
381
382static struct platform_device zeus_sram_device = {
383 .name = "pxa2xx-8bit-sram",
384 .id = 0,
385 .num_resources = 1,
386 .resource = &zeus_sram_resource,
387};
388
389/* SPI interface on SSP3 */
390static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = {
391 .num_chipselect = 1,
392 .enable_dma = 1,
393};
394
395/* CAN bus on SPI */
396static struct regulator_consumer_supply can_regulator_consumer =
397 REGULATOR_SUPPLY("vdd", "spi3.0");
398
399static struct regulator_init_data can_regulator_init_data = {
400 .constraints = {
401 .valid_ops_mask = REGULATOR_CHANGE_STATUS,
402 },
403 .consumer_supplies = &can_regulator_consumer,
404 .num_consumer_supplies = 1,
405};
406
407static struct fixed_voltage_config can_regulator_pdata = {
408 .supply_name = "CAN_SHDN",
409 .microvolts = 3300000,
410 .gpio = ZEUS_CAN_SHDN_GPIO,
411 .init_data = &can_regulator_init_data,
412};
413
414static struct platform_device can_regulator_device = {
415 .name = "reg-fixed-volage",
416 .id = -1,
417 .dev = {
418 .platform_data = &can_regulator_pdata,
419 },
420};
421
422static struct mcp251x_platform_data zeus_mcp2515_pdata = {
423 .oscillator_frequency = 16*1000*1000,
424};
425
426static struct spi_board_info zeus_spi_board_info[] = {
427 [0] = {
428 .modalias = "mcp2515",
429 .platform_data = &zeus_mcp2515_pdata,
430 .irq = PXA_GPIO_TO_IRQ(ZEUS_CAN_GPIO),
431 .max_speed_hz = 1*1000*1000,
432 .bus_num = 3,
433 .mode = SPI_MODE_0,
434 .chip_select = 0,
435 },
436};
437
438/* Leds */
439static struct gpio_led zeus_leds[] = {
440 [0] = {
441 .name = "zeus:yellow:1",
442 .default_trigger = "heartbeat",
443 .gpio = ZEUS_EXT0_GPIO(3),
444 .active_low = 1,
445 },
446 [1] = {
447 .name = "zeus:yellow:2",
448 .default_trigger = "default-on",
449 .gpio = ZEUS_EXT0_GPIO(4),
450 .active_low = 1,
451 },
452 [2] = {
453 .name = "zeus:yellow:3",
454 .default_trigger = "default-on",
455 .gpio = ZEUS_EXT0_GPIO(5),
456 .active_low = 1,
457 },
458};
459
460static struct gpio_led_platform_data zeus_leds_info = {
461 .leds = zeus_leds,
462 .num_leds = ARRAY_SIZE(zeus_leds),
463};
464
465static struct platform_device zeus_leds_device = {
466 .name = "leds-gpio",
467 .id = -1,
468 .dev = {
469 .platform_data = &zeus_leds_info,
470 },
471};
472
473static void zeus_cf_reset(int state)
474{
475 u16 cpld_state = __raw_readw(ZEUS_CPLD_CONTROL);
476
477 if (state)
478 cpld_state |= ZEUS_CPLD_CONTROL_CF_RST;
479 else
480 cpld_state &= ~ZEUS_CPLD_CONTROL_CF_RST;
481
482 __raw_writew(cpld_state, ZEUS_CPLD_CONTROL);
483}
484
485static struct arcom_pcmcia_pdata zeus_pcmcia_info = {
486 .cd_gpio = ZEUS_CF_CD_GPIO,
487 .rdy_gpio = ZEUS_CF_RDY_GPIO,
488 .pwr_gpio = ZEUS_CF_PWEN_GPIO,
489 .reset = zeus_cf_reset,
490};
491
492static struct platform_device zeus_pcmcia_device = {
493 .name = "zeus-pcmcia",
494 .id = -1,
495 .dev = {
496 .platform_data = &zeus_pcmcia_info,
497 },
498};
499
500static struct resource zeus_max6369_resource = {
501 .start = ZEUS_CPLD_EXTWDOG_PHYS,
502 .end = ZEUS_CPLD_EXTWDOG_PHYS,
503 .flags = IORESOURCE_MEM,
504};
505
506struct platform_device zeus_max6369_device = {
507 .name = "max6369_wdt",
508 .id = -1,
509 .resource = &zeus_max6369_resource,
510 .num_resources = 1,
511};
512
513static struct platform_device *zeus_devices[] __initdata = {
514 &zeus_serial_device,
515 &zeus_mtd_devices[0],
516 &zeus_dm9k0_device,
517 &zeus_dm9k1_device,
518 &zeus_sram_device,
519 &zeus_leds_device,
520 &zeus_pcmcia_device,
521 &zeus_max6369_device,
522 &can_regulator_device,
523};
524
525/* AC'97 */
526static pxa2xx_audio_ops_t zeus_ac97_info = {
527 .reset_gpio = 95,
528};
529
530
531/*
532 * USB host
533 */
534
535static int zeus_ohci_init(struct device *dev)
536{
537 int err;
538
539 /* Switch on port 2. */
540 if ((err = gpio_request(ZEUS_USB2_PWREN_GPIO, "USB2_PWREN"))) {
541 dev_err(dev, "Can't request USB2_PWREN\n");
542 return err;
543 }
544
545 if ((err = gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 1))) {
546 gpio_free(ZEUS_USB2_PWREN_GPIO);
547 dev_err(dev, "Can't enable USB2_PWREN\n");
548 return err;
549 }
550
551 /* Port 2 is shared between host and client interface. */
552 UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
553
554 return 0;
555}
556
557static void zeus_ohci_exit(struct device *dev)
558{
559 /* Power-off port 2 */
560 gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 0);
561 gpio_free(ZEUS_USB2_PWREN_GPIO);
562}
563
564static struct pxaohci_platform_data zeus_ohci_platform_data = {
565 .port_mode = PMM_NPS_MODE,
566 /* Clear Power Control Polarity Low and set Power Sense
567 * Polarity Low. Supply power to USB ports. */
568 .flags = ENABLE_PORT_ALL | POWER_SENSE_LOW,
569 .init = zeus_ohci_init,
570 .exit = zeus_ohci_exit,
571};
572
573/*
574 * Flat Panel
575 */
576
577static void zeus_lcd_power(int on, struct fb_var_screeninfo *si)
578{
579 gpio_set_value(ZEUS_LCD_EN_GPIO, on);
580}
581
582static void zeus_backlight_power(int on)
583{
584 gpio_set_value(ZEUS_BKLEN_GPIO, on);
585}
586
587static int zeus_setup_fb_gpios(void)
588{
589 int err;
590
591 if ((err = gpio_request(ZEUS_LCD_EN_GPIO, "LCD_EN")))
592 goto out_err;
593
594 if ((err = gpio_direction_output(ZEUS_LCD_EN_GPIO, 0)))
595 goto out_err_lcd;
596
597 if ((err = gpio_request(ZEUS_BKLEN_GPIO, "BKLEN")))
598 goto out_err_lcd;
599
600 if ((err = gpio_direction_output(ZEUS_BKLEN_GPIO, 0)))
601 goto out_err_bkl;
602
603 return 0;
604
605out_err_bkl:
606 gpio_free(ZEUS_BKLEN_GPIO);
607out_err_lcd:
608 gpio_free(ZEUS_LCD_EN_GPIO);
609out_err:
610 return err;
611}
612
613static struct pxafb_mode_info zeus_fb_mode_info[] = {
614 {
615 .pixclock = 39722,
616
617 .xres = 640,
618 .yres = 480,
619
620 .bpp = 16,
621
622 .hsync_len = 63,
623 .left_margin = 16,
624 .right_margin = 81,
625
626 .vsync_len = 2,
627 .upper_margin = 12,
628 .lower_margin = 31,
629
630 .sync = 0,
631 },
632};
633
634static struct pxafb_mach_info zeus_fb_info = {
635 .modes = zeus_fb_mode_info,
636 .num_modes = 1,
637 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
638 .pxafb_lcd_power = zeus_lcd_power,
639 .pxafb_backlight_power = zeus_backlight_power,
640};
641
642/*
643 * MMC/SD Device
644 *
645 * The card detect interrupt isn't debounced so we delay it by 250ms
646 * to give the card a chance to fully insert/eject.
647 */
648
649static struct pxamci_platform_data zeus_mci_platform_data = {
650 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
651 .detect_delay_ms = 250,
652 .gpio_card_detect = ZEUS_MMC_CD_GPIO,
653 .gpio_card_ro = ZEUS_MMC_WP_GPIO,
654 .gpio_card_ro_invert = 1,
655 .gpio_power = -1
656};
657
658/*
659 * USB Device Controller
660 */
661static void zeus_udc_command(int cmd)
662{
663 switch (cmd) {
664 case PXA2XX_UDC_CMD_DISCONNECT:
665 pr_info("zeus: disconnecting USB client\n");
666 UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
667 break;
668
669 case PXA2XX_UDC_CMD_CONNECT:
670 pr_info("zeus: connecting USB client\n");
671 UP2OCR = UP2OCR_HXOE | UP2OCR_DPPUE;
672 break;
673 }
674}
675
676static struct pxa2xx_udc_mach_info zeus_udc_info = {
677 .udc_command = zeus_udc_command,
678};
679
680#ifdef CONFIG_PM
681static void zeus_power_off(void)
682{
683 local_irq_disable();
684 cpu_suspend(PWRMODE_DEEPSLEEP, pxa27x_finish_suspend);
685}
686#else
687#define zeus_power_off NULL
688#endif
689
690#ifdef CONFIG_APM_EMULATION
691static void zeus_get_power_status(struct apm_power_info *info)
692{
693 /* Power supply is always present */
694 info->ac_line_status = APM_AC_ONLINE;
695 info->battery_status = APM_BATTERY_STATUS_NOT_PRESENT;
696 info->battery_flag = APM_BATTERY_FLAG_NOT_PRESENT;
697}
698
699static inline void zeus_setup_apm(void)
700{
701 apm_get_power_status = zeus_get_power_status;
702}
703#else
704static inline void zeus_setup_apm(void)
705{
706}
707#endif
708
709static int zeus_get_pcb_info(struct i2c_client *client, unsigned gpio,
710 unsigned ngpio, void *context)
711{
712 int i;
713 u8 pcb_info = 0;
714
715 for (i = 0; i < 8; i++) {
716 int pcb_bit = gpio + i + 8;
717
718 if (gpio_request(pcb_bit, "pcb info")) {
719 dev_err(&client->dev, "Can't request pcb info %d\n", i);
720 continue;
721 }
722
723 if (gpio_direction_input(pcb_bit)) {
724 dev_err(&client->dev, "Can't read pcb info %d\n", i);
725 gpio_free(pcb_bit);
726 continue;
727 }
728
729 pcb_info |= !!gpio_get_value(pcb_bit) << i;
730
731 gpio_free(pcb_bit);
732 }
733
734 dev_info(&client->dev, "Zeus PCB version %d issue %d\n",
735 pcb_info >> 4, pcb_info & 0xf);
736
737 return 0;
738}
739
740static struct pca953x_platform_data zeus_pca953x_pdata[] = {
741 [0] = { .gpio_base = ZEUS_EXT0_GPIO_BASE, },
742 [1] = {
743 .gpio_base = ZEUS_EXT1_GPIO_BASE,
744 .setup = zeus_get_pcb_info,
745 },
746 [2] = { .gpio_base = ZEUS_USER_GPIO_BASE, },
747};
748
749static struct i2c_board_info __initdata zeus_i2c_devices[] = {
750 {
751 I2C_BOARD_INFO("pca9535", 0x21),
752 .platform_data = &zeus_pca953x_pdata[0],
753 },
754 {
755 I2C_BOARD_INFO("pca9535", 0x22),
756 .platform_data = &zeus_pca953x_pdata[1],
757 },
758 {
759 I2C_BOARD_INFO("pca9535", 0x20),
760 .platform_data = &zeus_pca953x_pdata[2],
761 .irq = PXA_GPIO_TO_IRQ(ZEUS_EXTGPIO_GPIO),
762 },
763 { I2C_BOARD_INFO("lm75a", 0x48) },
764 { I2C_BOARD_INFO("24c01", 0x50) },
765 { I2C_BOARD_INFO("isl1208", 0x6f) },
766};
767
768static mfp_cfg_t zeus_pin_config[] __initdata = {
769 /* AC97 */
770 GPIO28_AC97_BITCLK,
771 GPIO29_AC97_SDATA_IN_0,
772 GPIO30_AC97_SDATA_OUT,
773 GPIO31_AC97_SYNC,
774
775 GPIO15_nCS_1,
776 GPIO78_nCS_2,
777 GPIO80_nCS_4,
778 GPIO33_nCS_5,
779
780 GPIO22_GPIO,
781 GPIO32_MMC_CLK,
782 GPIO92_MMC_DAT_0,
783 GPIO109_MMC_DAT_1,
784 GPIO110_MMC_DAT_2,
785 GPIO111_MMC_DAT_3,
786 GPIO112_MMC_CMD,
787
788 GPIO88_USBH1_PWR,
789 GPIO89_USBH1_PEN,
790 GPIO119_USBH2_PWR,
791 GPIO120_USBH2_PEN,
792
793 GPIO86_LCD_LDD_16,
794 GPIO87_LCD_LDD_17,
795
796 GPIO102_GPIO,
797 GPIO104_CIF_DD_2,
798 GPIO105_CIF_DD_1,
799
800 GPIO81_SSP3_TXD,
801 GPIO82_SSP3_RXD,
802 GPIO83_SSP3_SFRM,
803 GPIO84_SSP3_SCLK,
804
805 GPIO48_nPOE,
806 GPIO49_nPWE,
807 GPIO50_nPIOR,
808 GPIO51_nPIOW,
809 GPIO85_nPCE_1,
810 GPIO54_nPCE_2,
811 GPIO79_PSKTSEL,
812 GPIO55_nPREG,
813 GPIO56_nPWAIT,
814 GPIO57_nIOIS16,
815 GPIO36_GPIO, /* CF CD */
816 GPIO97_GPIO, /* CF PWREN */
817 GPIO99_GPIO, /* CF RDY */
818};
819
820/*
821 * DM9k MSCx settings: SRAM, 16 bits
822 * 17 cycles delay first access
823 * 5 cycles delay next access
824 * 13 cycles recovery time
825 * faster device
826 */
827#define DM9K_MSC_VALUE 0xe4c9
828
829static void __init zeus_init(void)
830{
831 u16 dm9000_msc = DM9K_MSC_VALUE;
832 u32 msc0, msc1;
833
834 system_rev = __raw_readw(ZEUS_CPLD_VERSION);
835 pr_info("Zeus CPLD V%dI%d\n", (system_rev & 0xf0) >> 4, (system_rev & 0x0f));
836
837 /* Fix timings for dm9000s (CS1/CS2)*/
838 msc0 = (__raw_readl(MSC0) & 0x0000ffff) | (dm9000_msc << 16);
839 msc1 = (__raw_readl(MSC1) & 0xffff0000) | dm9000_msc;
840 __raw_writel(msc0, MSC0);
841 __raw_writel(msc1, MSC1);
842
843 pm_power_off = zeus_power_off;
844 zeus_setup_apm();
845
846 pxa2xx_mfp_config(ARRAY_AND_SIZE(zeus_pin_config));
847
848 platform_add_devices(zeus_devices, ARRAY_SIZE(zeus_devices));
849
850 pxa_set_ohci_info(&zeus_ohci_platform_data);
851
852 if (zeus_setup_fb_gpios())
853 pr_err("Failed to setup fb gpios\n");
854 else
855 pxa_set_fb_info(NULL, &zeus_fb_info);
856
857 pxa_set_mci_info(&zeus_mci_platform_data);
858 pxa_set_udc_info(&zeus_udc_info);
859 pxa_set_ac97_info(&zeus_ac97_info);
860 pxa_set_i2c_info(NULL);
861 i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
862 pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
863 spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
864}
865
866static struct map_desc zeus_io_desc[] __initdata = {
867 {
868 .virtual = (unsigned long)ZEUS_CPLD_VERSION,
869 .pfn = __phys_to_pfn(ZEUS_CPLD_VERSION_PHYS),
870 .length = 0x1000,
871 .type = MT_DEVICE,
872 },
873 {
874 .virtual = (unsigned long)ZEUS_CPLD_ISA_IRQ,
875 .pfn = __phys_to_pfn(ZEUS_CPLD_ISA_IRQ_PHYS),
876 .length = 0x1000,
877 .type = MT_DEVICE,
878 },
879 {
880 .virtual = (unsigned long)ZEUS_CPLD_CONTROL,
881 .pfn = __phys_to_pfn(ZEUS_CPLD_CONTROL_PHYS),
882 .length = 0x1000,
883 .type = MT_DEVICE,
884 },
885 {
886 .virtual = (unsigned long)ZEUS_PC104IO,
887 .pfn = __phys_to_pfn(ZEUS_PC104IO_PHYS),
888 .length = 0x00800000,
889 .type = MT_DEVICE,
890 },
891};
892
893static void __init zeus_map_io(void)
894{
895 pxa27x_map_io();
896
897 iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc));
898
899 /* Clear PSPR to ensure a full restart on wake-up. */
900 PMCR = PSPR = 0;
901
902 /* enable internal 32.768Khz oscillator (ignore OSCC_OOK) */
903 OSCC |= OSCC_OON;
904
905 /* Some clock cycles later (from OSCC_ON), programme PCFR (OPDE...).
906 * float chip selects and PCMCIA */
907 PCFR = PCFR_OPDE | PCFR_DC_EN | PCFR_FS | PCFR_FP;
908}
909
910MACHINE_START(ARCOM_ZEUS, "Arcom/Eurotech ZEUS")
911 /* Maintainer: Marc Zyngier <maz@misterjones.org> */
912 .atag_offset = 0x100,
913 .map_io = zeus_map_io,
914 .nr_irqs = ZEUS_NR_IRQS,
915 .init_irq = zeus_init_irq,
916 .handle_irq = pxa27x_handle_irq,
917 .init_time = pxa_timer_init,
918 .init_machine = zeus_init,
919 .restart = pxa_restart,
920MACHINE_END
921