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Merge tag 'trace-fixes-v3.15-rc4-v2' of git://git.kernel.org/pub/scm/linux/kernel...
[deliverable/linux.git] / arch / arm / mach-pxa / zeus.c
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
60 static unsigned long zeus_irq_enabled_mask;
61 static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
62 static 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
78 static inline int zeus_irq_to_bitmask(unsigned int irq)
79 {
80 return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
81 }
82
83 static inline int zeus_bit_to_irq(int bit)
84 {
85 return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
86 }
87
88 static void zeus_ack_irq(struct irq_data *d)
89 {
90 __raw_writew(zeus_irq_to_bitmask(d->irq), ZEUS_CPLD_ISA_IRQ);
91 }
92
93 static void zeus_mask_irq(struct irq_data *d)
94 {
95 zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(d->irq));
96 }
97
98 static void zeus_unmask_irq(struct irq_data *d)
99 {
100 zeus_irq_enabled_mask |= zeus_irq_to_bitmask(d->irq);
101 }
102
103 static inline unsigned long zeus_irq_pending(void)
104 {
105 return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
106 }
107
108 static 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
126 static 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
133 static 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 */
167 static 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
180 static struct physmap_flash_data zeus_flash_data[] = {
181 [0] = {
182 .width = 2,
183 .parts = NULL,
184 .nr_parts = 0,
185 },
186 };
187
188 static 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 */
201 static 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
234 static 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
304 static 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 */
315 static 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
333 static 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
351 static struct dm9000_plat_data zeus_dm9k_platdata = {
352 .flags = DM9000_PLATF_16BITONLY,
353 };
354
355 static 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
365 static 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 */
376 static 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
382 static 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 */
390 static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = {
391 .num_chipselect = 1,
392 .enable_dma = 1,
393 };
394
395 /* CAN bus on SPI */
396 static struct regulator_consumer_supply can_regulator_consumer =
397 REGULATOR_SUPPLY("vdd", "spi3.0");
398
399 static 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
407 static 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
414 static 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
422 static struct mcp251x_platform_data zeus_mcp2515_pdata = {
423 .oscillator_frequency = 16*1000*1000,
424 };
425
426 static 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 */
439 static 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
460 static struct gpio_led_platform_data zeus_leds_info = {
461 .leds = zeus_leds,
462 .num_leds = ARRAY_SIZE(zeus_leds),
463 };
464
465 static struct platform_device zeus_leds_device = {
466 .name = "leds-gpio",
467 .id = -1,
468 .dev = {
469 .platform_data = &zeus_leds_info,
470 },
471 };
472
473 static 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
485 static 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
492 static struct platform_device zeus_pcmcia_device = {
493 .name = "zeus-pcmcia",
494 .id = -1,
495 .dev = {
496 .platform_data = &zeus_pcmcia_info,
497 },
498 };
499
500 static struct resource zeus_max6369_resource = {
501 .start = ZEUS_CPLD_EXTWDOG_PHYS,
502 .end = ZEUS_CPLD_EXTWDOG_PHYS,
503 .flags = IORESOURCE_MEM,
504 };
505
506 struct platform_device zeus_max6369_device = {
507 .name = "max6369_wdt",
508 .id = -1,
509 .resource = &zeus_max6369_resource,
510 .num_resources = 1,
511 };
512
513 static 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 */
526 static pxa2xx_audio_ops_t zeus_ac97_info = {
527 .reset_gpio = 95,
528 };
529
530
531 /*
532 * USB host
533 */
534
535 static 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
557 static 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
564 static 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
577 static void zeus_lcd_power(int on, struct fb_var_screeninfo *si)
578 {
579 gpio_set_value(ZEUS_LCD_EN_GPIO, on);
580 }
581
582 static void zeus_backlight_power(int on)
583 {
584 gpio_set_value(ZEUS_BKLEN_GPIO, on);
585 }
586
587 static 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
605 out_err_bkl:
606 gpio_free(ZEUS_BKLEN_GPIO);
607 out_err_lcd:
608 gpio_free(ZEUS_LCD_EN_GPIO);
609 out_err:
610 return err;
611 }
612
613 static 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
634 static 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
649 static 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 */
661 static 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
676 static struct pxa2xx_udc_mach_info zeus_udc_info = {
677 .udc_command = zeus_udc_command,
678 };
679
680 #ifdef CONFIG_PM
681 static 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
691 static 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
699 static inline void zeus_setup_apm(void)
700 {
701 apm_get_power_status = zeus_get_power_status;
702 }
703 #else
704 static inline void zeus_setup_apm(void)
705 {
706 }
707 #endif
708
709 static 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
740 static 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
749 static 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
768 static 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
829 static 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
866 static 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
893 static 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
910 MACHINE_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,
920 MACHINE_END
921
Linux kernel - Deliverables
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