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-rw-r--r--arch/arm/mach-pxa/zeus.c913
1 files changed, 913 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/zeus.c b/arch/arm/mach-pxa/zeus.c
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index 000000000000..39896d883584
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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/mtd/mtd.h>
24#include <linux/mtd/partitions.h>
25#include <linux/mtd/physmap.h>
26#include <linux/i2c.h>
27#include <linux/i2c/pca953x.h>
28#include <linux/apm-emulation.h>
29#include <linux/can/platform/mcp251x.h>
30
31#include <asm/mach-types.h>
32#include <asm/mach/arch.h>
33#include <asm/mach/map.h>
34
35#include <plat/i2c.h>
36
37#include <mach/pxa2xx-regs.h>
38#include <mach/regs-uart.h>
39#include <mach/ohci.h>
40#include <mach/mmc.h>
41#include <mach/pxa27x-udc.h>
42#include <mach/udc.h>
43#include <mach/pxafb.h>
44#include <mach/pxa2xx_spi.h>
45#include <mach/mfp-pxa27x.h>
46#include <mach/pm.h>
47#include <mach/audio.h>
48#include <mach/arcom-pcmcia.h>
49#include <mach/zeus.h>
50
51#include "generic.h"
52
53/*
54 * Interrupt handling
55 */
56
57static unsigned long zeus_irq_enabled_mask;
58static const int zeus_isa_irqs[] = { 3, 4, 5, 6, 7, 10, 11, 12, };
59static const int zeus_isa_irq_map[] = {
60 0, /* ISA irq #0, invalid */
61 0, /* ISA irq #1, invalid */
62 0, /* ISA irq #2, invalid */
63 1 << 0, /* ISA irq #3 */
64 1 << 1, /* ISA irq #4 */
65 1 << 2, /* ISA irq #5 */
66 1 << 3, /* ISA irq #6 */
67 1 << 4, /* ISA irq #7 */
68 0, /* ISA irq #8, invalid */
69 0, /* ISA irq #9, invalid */
70 1 << 5, /* ISA irq #10 */
71 1 << 6, /* ISA irq #11 */
72 1 << 7, /* ISA irq #12 */
73};
74
75static inline int zeus_irq_to_bitmask(unsigned int irq)
76{
77 return zeus_isa_irq_map[irq - PXA_ISA_IRQ(0)];
78}
79
80static inline int zeus_bit_to_irq(int bit)
81{
82 return zeus_isa_irqs[bit] + PXA_ISA_IRQ(0);
83}
84
85static void zeus_ack_irq(unsigned int irq)
86{
87 __raw_writew(zeus_irq_to_bitmask(irq), ZEUS_CPLD_ISA_IRQ);
88}
89
90static void zeus_mask_irq(unsigned int irq)
91{
92 zeus_irq_enabled_mask &= ~(zeus_irq_to_bitmask(irq));
93}
94
95static void zeus_unmask_irq(unsigned int irq)
96{
97 zeus_irq_enabled_mask |= zeus_irq_to_bitmask(irq);
98}
99
100static inline unsigned long zeus_irq_pending(void)
101{
102 return __raw_readw(ZEUS_CPLD_ISA_IRQ) & zeus_irq_enabled_mask;
103}
104
105static void zeus_irq_handler(unsigned int irq, struct irq_desc *desc)
106{
107 unsigned long pending;
108
109 pending = zeus_irq_pending();
110 do {
111 /* we're in a chained irq handler,
112 * so ack the interrupt by hand */
113 desc->chip->ack(gpio_to_irq(ZEUS_ISA_GPIO));
114
115 if (likely(pending)) {
116 irq = zeus_bit_to_irq(__ffs(pending));
117 generic_handle_irq(irq);
118 }
119 pending = zeus_irq_pending();
120 } while (pending);
121}
122
123static struct irq_chip zeus_irq_chip = {
124 .name = "ISA",
125 .ack = zeus_ack_irq,
126 .mask = zeus_mask_irq,
127 .unmask = zeus_unmask_irq,
128};
129
130static void __init zeus_init_irq(void)
131{
132 int level;
133 int isa_irq;
134
135 pxa27x_init_irq();
136
137 /* Peripheral IRQs. It would be nice to move those inside driver
138 configuration, but it is not supported at the moment. */
139 set_irq_type(gpio_to_irq(ZEUS_AC97_GPIO), IRQ_TYPE_EDGE_RISING);
140 set_irq_type(gpio_to_irq(ZEUS_WAKEUP_GPIO), IRQ_TYPE_EDGE_RISING);
141 set_irq_type(gpio_to_irq(ZEUS_PTT_GPIO), IRQ_TYPE_EDGE_RISING);
142 set_irq_type(gpio_to_irq(ZEUS_EXTGPIO_GPIO), IRQ_TYPE_EDGE_FALLING);
143 set_irq_type(gpio_to_irq(ZEUS_CAN_GPIO), IRQ_TYPE_EDGE_FALLING);
144
145 /* Setup ISA IRQs */
146 for (level = 0; level < ARRAY_SIZE(zeus_isa_irqs); level++) {
147 isa_irq = zeus_bit_to_irq(level);
148 set_irq_chip(isa_irq, &zeus_irq_chip);
149 set_irq_handler(isa_irq, handle_edge_irq);
150 set_irq_flags(isa_irq, IRQF_VALID | IRQF_PROBE);
151 }
152
153 set_irq_type(gpio_to_irq(ZEUS_ISA_GPIO), IRQ_TYPE_EDGE_RISING);
154 set_irq_chained_handler(gpio_to_irq(ZEUS_ISA_GPIO), zeus_irq_handler);
155}
156
157
158/*
159 * Platform devices
160 */
161
162/* Flash */
163static struct resource zeus_mtd_resources[] = {
164 [0] = { /* NOR Flash (up to 64MB) */
165 .start = ZEUS_FLASH_PHYS,
166 .end = ZEUS_FLASH_PHYS + SZ_64M - 1,
167 .flags = IORESOURCE_MEM,
168 },
169 [1] = { /* SRAM */
170 .start = ZEUS_SRAM_PHYS,
171 .end = ZEUS_SRAM_PHYS + SZ_512K - 1,
172 .flags = IORESOURCE_MEM,
173 },
174};
175
176static struct physmap_flash_data zeus_flash_data[] = {
177 [0] = {
178 .width = 2,
179 .parts = NULL,
180 .nr_parts = 0,
181 },
182};
183
184static struct platform_device zeus_mtd_devices[] = {
185 [0] = {
186 .name = "physmap-flash",
187 .id = 0,
188 .dev = {
189 .platform_data = &zeus_flash_data[0],
190 },
191 .resource = &zeus_mtd_resources[0],
192 .num_resources = 1,
193 },
194};
195
196/* Serial */
197static struct resource zeus_serial_resources[] = {
198 {
199 .start = 0x10000000,
200 .end = 0x1000000f,
201 .flags = IORESOURCE_MEM,
202 },
203 {
204 .start = 0x10800000,
205 .end = 0x1080000f,
206 .flags = IORESOURCE_MEM,
207 },
208 {
209 .start = 0x11000000,
210 .end = 0x1100000f,
211 .flags = IORESOURCE_MEM,
212 },
213 {
214 .start = 0x40100000,
215 .end = 0x4010001f,
216 .flags = IORESOURCE_MEM,
217 },
218 {
219 .start = 0x40200000,
220 .end = 0x4020001f,
221 .flags = IORESOURCE_MEM,
222 },
223 {
224 .start = 0x40700000,
225 .end = 0x4070001f,
226 .flags = IORESOURCE_MEM,
227 },
228};
229
230static struct plat_serial8250_port serial_platform_data[] = {
231 /* External UARTs */
232 /* FIXME: Shared IRQs on COM1-COM4 will not work properly on v1i1 hardware. */
233 { /* COM1 */
234 .mapbase = 0x10000000,
235 .irq = gpio_to_irq(ZEUS_UARTA_GPIO),
236 .irqflags = IRQF_TRIGGER_RISING,
237 .uartclk = 14745600,
238 .regshift = 1,
239 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
240 .iotype = UPIO_MEM,
241 },
242 { /* COM2 */
243 .mapbase = 0x10800000,
244 .irq = gpio_to_irq(ZEUS_UARTB_GPIO),
245 .irqflags = IRQF_TRIGGER_RISING,
246 .uartclk = 14745600,
247 .regshift = 1,
248 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
249 .iotype = UPIO_MEM,
250 },
251 { /* COM3 */
252 .mapbase = 0x11000000,
253 .irq = gpio_to_irq(ZEUS_UARTC_GPIO),
254 .irqflags = IRQF_TRIGGER_RISING,
255 .uartclk = 14745600,
256 .regshift = 1,
257 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
258 .iotype = UPIO_MEM,
259 },
260 { /* COM4 */
261 .mapbase = 0x11800000,
262 .irq = gpio_to_irq(ZEUS_UARTD_GPIO),
263 .irqflags = IRQF_TRIGGER_RISING,
264 .uartclk = 14745600,
265 .regshift = 1,
266 .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
267 .iotype = UPIO_MEM,
268 },
269 /* Internal UARTs */
270 { /* FFUART */
271 .membase = (void *)&FFUART,
272 .mapbase = __PREG(FFUART),
273 .irq = IRQ_FFUART,
274 .uartclk = 921600 * 16,
275 .regshift = 2,
276 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
277 .iotype = UPIO_MEM,
278 },
279 { /* BTUART */
280 .membase = (void *)&BTUART,
281 .mapbase = __PREG(BTUART),
282 .irq = IRQ_BTUART,
283 .uartclk = 921600 * 16,
284 .regshift = 2,
285 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
286 .iotype = UPIO_MEM,
287 },
288 { /* STUART */
289 .membase = (void *)&STUART,
290 .mapbase = __PREG(STUART),
291 .irq = IRQ_STUART,
292 .uartclk = 921600 * 16,
293 .regshift = 2,
294 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
295 .iotype = UPIO_MEM,
296 },
297 { },
298};
299
300static struct platform_device zeus_serial_device = {
301 .name = "serial8250",
302 .id = PLAT8250_DEV_PLATFORM,
303 .dev = {
304 .platform_data = serial_platform_data,
305 },
306 .num_resources = ARRAY_SIZE(zeus_serial_resources),
307 .resource = zeus_serial_resources,
308};
309
310/* Ethernet */
311static struct resource zeus_dm9k0_resource[] = {
312 [0] = {
313 .start = ZEUS_ETH0_PHYS,
314 .end = ZEUS_ETH0_PHYS + 1,
315 .flags = IORESOURCE_MEM
316 },
317 [1] = {
318 .start = ZEUS_ETH0_PHYS + 2,
319 .end = ZEUS_ETH0_PHYS + 3,
320 .flags = IORESOURCE_MEM
321 },
322 [2] = {
323 .start = gpio_to_irq(ZEUS_ETH0_GPIO),
324 .end = gpio_to_irq(ZEUS_ETH0_GPIO),
325 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
326 },
327};
328
329static struct resource zeus_dm9k1_resource[] = {
330 [0] = {
331 .start = ZEUS_ETH1_PHYS,
332 .end = ZEUS_ETH1_PHYS + 1,
333 .flags = IORESOURCE_MEM
334 },
335 [1] = {
336 .start = ZEUS_ETH1_PHYS + 2,
337 .end = ZEUS_ETH1_PHYS + 3,
338 .flags = IORESOURCE_MEM,
339 },
340 [2] = {
341 .start = gpio_to_irq(ZEUS_ETH1_GPIO),
342 .end = gpio_to_irq(ZEUS_ETH1_GPIO),
343 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWEDGE,
344 },
345};
346
347static struct dm9000_plat_data zeus_dm9k_platdata = {
348 .flags = DM9000_PLATF_16BITONLY,
349};
350
351static struct platform_device zeus_dm9k0_device = {
352 .name = "dm9000",
353 .id = 0,
354 .num_resources = ARRAY_SIZE(zeus_dm9k0_resource),
355 .resource = zeus_dm9k0_resource,
356 .dev = {
357 .platform_data = &zeus_dm9k_platdata,
358 }
359};
360
361static struct platform_device zeus_dm9k1_device = {
362 .name = "dm9000",
363 .id = 1,
364 .num_resources = ARRAY_SIZE(zeus_dm9k1_resource),
365 .resource = zeus_dm9k1_resource,
366 .dev = {
367 .platform_data = &zeus_dm9k_platdata,
368 }
369};
370
371/* External SRAM */
372static struct resource zeus_sram_resource = {
373 .start = ZEUS_SRAM_PHYS,
374 .end = ZEUS_SRAM_PHYS + ZEUS_SRAM_SIZE * 2 - 1,
375 .flags = IORESOURCE_MEM,
376};
377
378static struct platform_device zeus_sram_device = {
379 .name = "pxa2xx-8bit-sram",
380 .id = 0,
381 .num_resources = 1,
382 .resource = &zeus_sram_resource,
383};
384
385/* SPI interface on SSP3 */
386static struct pxa2xx_spi_master pxa2xx_spi_ssp3_master_info = {
387 .num_chipselect = 1,
388 .enable_dma = 1,
389};
390
391/* CAN bus on SPI */
392static int zeus_mcp2515_setup(struct spi_device *sdev)
393{
394 int err;
395
396 err = gpio_request(ZEUS_CAN_SHDN_GPIO, "CAN shutdown");
397 if (err)
398 return err;
399
400 err = gpio_direction_output(ZEUS_CAN_SHDN_GPIO, 1);
401 if (err) {
402 gpio_free(ZEUS_CAN_SHDN_GPIO);
403 return err;
404 }
405
406 return 0;
407}
408
409static int zeus_mcp2515_transceiver_enable(int enable)
410{
411 gpio_set_value(ZEUS_CAN_SHDN_GPIO, !enable);
412 return 0;
413}
414
415static struct mcp251x_platform_data zeus_mcp2515_pdata = {
416 .oscillator_frequency = 16*1000*1000,
417 .model = CAN_MCP251X_MCP2515,
418 .board_specific_setup = zeus_mcp2515_setup,
419 .transceiver_enable = zeus_mcp2515_transceiver_enable,
420 .power_enable = zeus_mcp2515_transceiver_enable,
421};
422
423static struct spi_board_info zeus_spi_board_info[] = {
424 [0] = {
425 .modalias = "mcp251x",
426 .platform_data = &zeus_mcp2515_pdata,
427 .irq = gpio_to_irq(ZEUS_CAN_GPIO),
428 .max_speed_hz = 1*1000*1000,
429 .bus_num = 3,
430 .mode = SPI_MODE_0,
431 .chip_select = 0,
432 },
433};
434
435/* Leds */
436static struct gpio_led zeus_leds[] = {
437 [0] = {
438 .name = "zeus:yellow:1",
439 .default_trigger = "heartbeat",
440 .gpio = ZEUS_EXT0_GPIO(3),
441 .active_low = 1,
442 },
443 [1] = {
444 .name = "zeus:yellow:2",
445 .default_trigger = "default-on",
446 .gpio = ZEUS_EXT0_GPIO(4),
447 .active_low = 1,
448 },
449 [2] = {
450 .name = "zeus:yellow:3",
451 .default_trigger = "default-on",
452 .gpio = ZEUS_EXT0_GPIO(5),
453 .active_low = 1,
454 },
455};
456
457static struct gpio_led_platform_data zeus_leds_info = {
458 .leds = zeus_leds,
459 .num_leds = ARRAY_SIZE(zeus_leds),
460};
461
462static struct platform_device zeus_leds_device = {
463 .name = "leds-gpio",
464 .id = -1,
465 .dev = {
466 .platform_data = &zeus_leds_info,
467 },
468};
469
470static void zeus_cf_reset(int state)
471{
472 u16 cpld_state = __raw_readw(ZEUS_CPLD_CONTROL);
473
474 if (state)
475 cpld_state |= ZEUS_CPLD_CONTROL_CF_RST;
476 else
477 cpld_state &= ~ZEUS_CPLD_CONTROL_CF_RST;
478
479 __raw_writew(cpld_state, ZEUS_CPLD_CONTROL);
480}
481
482static struct arcom_pcmcia_pdata zeus_pcmcia_info = {
483 .cd_gpio = ZEUS_CF_CD_GPIO,
484 .rdy_gpio = ZEUS_CF_RDY_GPIO,
485 .pwr_gpio = ZEUS_CF_PWEN_GPIO,
486 .reset = zeus_cf_reset,
487};
488
489static struct platform_device zeus_pcmcia_device = {
490 .name = "zeus-pcmcia",
491 .id = -1,
492 .dev = {
493 .platform_data = &zeus_pcmcia_info,
494 },
495};
496
497static struct resource zeus_max6369_resource = {
498 .start = ZEUS_CPLD_EXTWDOG_PHYS,
499 .end = ZEUS_CPLD_EXTWDOG_PHYS,
500 .flags = IORESOURCE_MEM,
501};
502
503struct platform_device zeus_max6369_device = {
504 .name = "max6369_wdt",
505 .id = -1,
506 .resource = &zeus_max6369_resource,
507 .num_resources = 1,
508};
509
510static struct platform_device *zeus_devices[] __initdata = {
511 &zeus_serial_device,
512 &zeus_mtd_devices[0],
513 &zeus_dm9k0_device,
514 &zeus_dm9k1_device,
515 &zeus_sram_device,
516 &zeus_leds_device,
517 &zeus_pcmcia_device,
518 &zeus_max6369_device,
519};
520
521/* AC'97 */
522static pxa2xx_audio_ops_t zeus_ac97_info = {
523 .reset_gpio = 95,
524};
525
526
527/*
528 * USB host
529 */
530
531static int zeus_ohci_init(struct device *dev)
532{
533 int err;
534
535 /* Switch on port 2. */
536 if ((err = gpio_request(ZEUS_USB2_PWREN_GPIO, "USB2_PWREN"))) {
537 dev_err(dev, "Can't request USB2_PWREN\n");
538 return err;
539 }
540
541 if ((err = gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 1))) {
542 gpio_free(ZEUS_USB2_PWREN_GPIO);
543 dev_err(dev, "Can't enable USB2_PWREN\n");
544 return err;
545 }
546
547 /* Port 2 is shared between host and client interface. */
548 UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
549
550 return 0;
551}
552
553static void zeus_ohci_exit(struct device *dev)
554{
555 /* Power-off port 2 */
556 gpio_direction_output(ZEUS_USB2_PWREN_GPIO, 0);
557 gpio_free(ZEUS_USB2_PWREN_GPIO);
558}
559
560static struct pxaohci_platform_data zeus_ohci_platform_data = {
561 .port_mode = PMM_NPS_MODE,
562 /* Clear Power Control Polarity Low and set Power Sense
563 * Polarity Low. Supply power to USB ports. */
564 .flags = ENABLE_PORT_ALL | POWER_SENSE_LOW,
565 .init = zeus_ohci_init,
566 .exit = zeus_ohci_exit,
567};
568
569/*
570 * Flat Panel
571 */
572
573static void zeus_lcd_power(int on, struct fb_var_screeninfo *si)
574{
575 gpio_set_value(ZEUS_LCD_EN_GPIO, on);
576}
577
578static void zeus_backlight_power(int on)
579{
580 gpio_set_value(ZEUS_BKLEN_GPIO, on);
581}
582
583static int zeus_setup_fb_gpios(void)
584{
585 int err;
586
587 if ((err = gpio_request(ZEUS_LCD_EN_GPIO, "LCD_EN")))
588 goto out_err;
589
590 if ((err = gpio_direction_output(ZEUS_LCD_EN_GPIO, 0)))
591 goto out_err_lcd;
592
593 if ((err = gpio_request(ZEUS_BKLEN_GPIO, "BKLEN")))
594 goto out_err_lcd;
595
596 if ((err = gpio_direction_output(ZEUS_BKLEN_GPIO, 0)))
597 goto out_err_bkl;
598
599 return 0;
600
601out_err_bkl:
602 gpio_free(ZEUS_BKLEN_GPIO);
603out_err_lcd:
604 gpio_free(ZEUS_LCD_EN_GPIO);
605out_err:
606 return err;
607}
608
609static struct pxafb_mode_info zeus_fb_mode_info[] = {
610 {
611 .pixclock = 39722,
612
613 .xres = 640,
614 .yres = 480,
615
616 .bpp = 16,
617
618 .hsync_len = 63,
619 .left_margin = 16,
620 .right_margin = 81,
621
622 .vsync_len = 2,
623 .upper_margin = 12,
624 .lower_margin = 31,
625
626 .sync = 0,
627 },
628};
629
630static struct pxafb_mach_info zeus_fb_info = {
631 .modes = zeus_fb_mode_info,
632 .num_modes = 1,
633 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
634 .pxafb_lcd_power = zeus_lcd_power,
635 .pxafb_backlight_power = zeus_backlight_power,
636};
637
638/*
639 * MMC/SD Device
640 *
641 * The card detect interrupt isn't debounced so we delay it by 250ms
642 * to give the card a chance to fully insert/eject.
643 */
644
645static struct pxamci_platform_data zeus_mci_platform_data = {
646 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
647 .detect_delay = HZ/4,
648 .gpio_card_detect = ZEUS_MMC_CD_GPIO,
649 .gpio_card_ro = ZEUS_MMC_WP_GPIO,
650 .gpio_card_ro_invert = 1,
651 .gpio_power = -1
652};
653
654/*
655 * USB Device Controller
656 */
657static void zeus_udc_command(int cmd)
658{
659 switch (cmd) {
660 case PXA2XX_UDC_CMD_DISCONNECT:
661 pr_info("zeus: disconnecting USB client\n");
662 UP2OCR = UP2OCR_HXOE | UP2OCR_HXS | UP2OCR_DMPDE | UP2OCR_DPPDE;
663 break;
664
665 case PXA2XX_UDC_CMD_CONNECT:
666 pr_info("zeus: connecting USB client\n");
667 UP2OCR = UP2OCR_HXOE | UP2OCR_DPPUE;
668 break;
669 }
670}
671
672static struct pxa2xx_udc_mach_info zeus_udc_info = {
673 .udc_command = zeus_udc_command,
674};
675
676#ifdef CONFIG_PM
677static void zeus_power_off(void)
678{
679 local_irq_disable();
680 pxa27x_cpu_suspend(PWRMODE_DEEPSLEEP);
681}
682#else
683#define zeus_power_off NULL
684#endif
685
686#ifdef CONFIG_APM_EMULATION
687static void zeus_get_power_status(struct apm_power_info *info)
688{
689 /* Power supply is always present */
690 info->ac_line_status = APM_AC_ONLINE;
691 info->battery_status = APM_BATTERY_STATUS_NOT_PRESENT;
692 info->battery_flag = APM_BATTERY_FLAG_NOT_PRESENT;
693}
694
695static inline void zeus_setup_apm(void)
696{
697 apm_get_power_status = zeus_get_power_status;
698}
699#else
700static inline void zeus_setup_apm(void)
701{
702}
703#endif
704
705static int zeus_get_pcb_info(struct i2c_client *client, unsigned gpio,
706 unsigned ngpio, void *context)
707{
708 int i;
709 u8 pcb_info = 0;
710
711 for (i = 0; i < 8; i++) {
712 int pcb_bit = gpio + i + 8;
713
714 if (gpio_request(pcb_bit, "pcb info")) {
715 dev_err(&client->dev, "Can't request pcb info %d\n", i);
716 continue;
717 }
718
719 if (gpio_direction_input(pcb_bit)) {
720 dev_err(&client->dev, "Can't read pcb info %d\n", i);
721 gpio_free(pcb_bit);
722 continue;
723 }
724
725 pcb_info |= !!gpio_get_value(pcb_bit) << i;
726
727 gpio_free(pcb_bit);
728 }
729
730 dev_info(&client->dev, "Zeus PCB version %d issue %d\n",
731 pcb_info >> 4, pcb_info & 0xf);
732
733 return 0;
734}
735
736static struct pca953x_platform_data zeus_pca953x_pdata[] = {
737 [0] = { .gpio_base = ZEUS_EXT0_GPIO_BASE, },
738 [1] = {
739 .gpio_base = ZEUS_EXT1_GPIO_BASE,
740 .setup = zeus_get_pcb_info,
741 },
742 [2] = { .gpio_base = ZEUS_USER_GPIO_BASE, },
743};
744
745static struct i2c_board_info __initdata zeus_i2c_devices[] = {
746 {
747 I2C_BOARD_INFO("pca9535", 0x21),
748 .platform_data = &zeus_pca953x_pdata[0],
749 },
750 {
751 I2C_BOARD_INFO("pca9535", 0x22),
752 .platform_data = &zeus_pca953x_pdata[1],
753 },
754 {
755 I2C_BOARD_INFO("pca9535", 0x20),
756 .platform_data = &zeus_pca953x_pdata[2],
757 .irq = gpio_to_irq(ZEUS_EXTGPIO_GPIO),
758 },
759 { I2C_BOARD_INFO("lm75a", 0x48) },
760 { I2C_BOARD_INFO("24c01", 0x50) },
761 { I2C_BOARD_INFO("isl1208", 0x6f) },
762};
763
764static mfp_cfg_t zeus_pin_config[] __initdata = {
765 /* AC97 */
766 GPIO28_AC97_BITCLK,
767 GPIO29_AC97_SDATA_IN_0,
768 GPIO30_AC97_SDATA_OUT,
769 GPIO31_AC97_SYNC,
770
771 GPIO15_nCS_1,
772 GPIO78_nCS_2,
773 GPIO80_nCS_4,
774 GPIO33_nCS_5,
775
776 GPIO22_GPIO,
777 GPIO32_MMC_CLK,
778 GPIO92_MMC_DAT_0,
779 GPIO109_MMC_DAT_1,
780 GPIO110_MMC_DAT_2,
781 GPIO111_MMC_DAT_3,
782 GPIO112_MMC_CMD,
783
784 GPIO88_USBH1_PWR,
785 GPIO89_USBH1_PEN,
786 GPIO119_USBH2_PWR,
787 GPIO120_USBH2_PEN,
788
789 GPIO86_LCD_LDD_16,
790 GPIO87_LCD_LDD_17,
791
792 GPIO102_GPIO,
793 GPIO104_CIF_DD_2,
794 GPIO105_CIF_DD_1,
795
796 GPIO81_SSP3_TXD,
797 GPIO82_SSP3_RXD,
798 GPIO83_SSP3_SFRM,
799 GPIO84_SSP3_SCLK,
800
801 GPIO48_nPOE,
802 GPIO49_nPWE,
803 GPIO50_nPIOR,
804 GPIO51_nPIOW,
805 GPIO85_nPCE_1,
806 GPIO54_nPCE_2,
807 GPIO79_PSKTSEL,
808 GPIO55_nPREG,
809 GPIO56_nPWAIT,
810 GPIO57_nIOIS16,
811 GPIO36_GPIO, /* CF CD */
812 GPIO97_GPIO, /* CF PWREN */
813 GPIO99_GPIO, /* CF RDY */
814};
815
816/*
817 * DM9k MSCx settings: SRAM, 16 bits
818 * 17 cycles delay first access
819 * 5 cycles delay next access
820 * 13 cycles recovery time
821 * faster device
822 */
823#define DM9K_MSC_VALUE 0xe4c9
824
825static void __init zeus_init(void)
826{
827 u16 dm9000_msc = DM9K_MSC_VALUE;
828
829 system_rev = __raw_readw(ZEUS_CPLD_VERSION);
830 pr_info("Zeus CPLD V%dI%d\n", (system_rev & 0xf0) >> 4, (system_rev & 0x0f));
831
832 /* Fix timings for dm9000s (CS1/CS2)*/
833 MSC0 = (MSC0 & 0xffff) | (dm9000_msc << 16);
834 MSC1 = (MSC1 & 0xffff0000) | dm9000_msc;
835
836 pm_power_off = zeus_power_off;
837 zeus_setup_apm();
838
839 pxa2xx_mfp_config(ARRAY_AND_SIZE(zeus_pin_config));
840
841 platform_add_devices(zeus_devices, ARRAY_SIZE(zeus_devices));
842
843 pxa_set_ohci_info(&zeus_ohci_platform_data);
844
845 if (zeus_setup_fb_gpios())
846 pr_err("Failed to setup fb gpios\n");
847 else
848 set_pxa_fb_info(&zeus_fb_info);
849
850 pxa_set_mci_info(&zeus_mci_platform_data);
851 pxa_set_udc_info(&zeus_udc_info);
852 pxa_set_ac97_info(&zeus_ac97_info);
853 pxa_set_i2c_info(NULL);
854 i2c_register_board_info(0, ARRAY_AND_SIZE(zeus_i2c_devices));
855 pxa2xx_set_spi_info(3, &pxa2xx_spi_ssp3_master_info);
856 spi_register_board_info(zeus_spi_board_info, ARRAY_SIZE(zeus_spi_board_info));
857}
858
859static struct map_desc zeus_io_desc[] __initdata = {
860 {
861 .virtual = ZEUS_CPLD_VERSION,
862 .pfn = __phys_to_pfn(ZEUS_CPLD_VERSION_PHYS),
863 .length = 0x1000,
864 .type = MT_DEVICE,
865 },
866 {
867 .virtual = ZEUS_CPLD_ISA_IRQ,
868 .pfn = __phys_to_pfn(ZEUS_CPLD_ISA_IRQ_PHYS),
869 .length = 0x1000,
870 .type = MT_DEVICE,
871 },
872 {
873 .virtual = ZEUS_CPLD_CONTROL,
874 .pfn = __phys_to_pfn(ZEUS_CPLD_CONTROL_PHYS),
875 .length = 0x1000,
876 .type = MT_DEVICE,
877 },
878 {
879 .virtual = ZEUS_PC104IO,
880 .pfn = __phys_to_pfn(ZEUS_PC104IO_PHYS),
881 .length = 0x00800000,
882 .type = MT_DEVICE,
883 },
884};
885
886static void __init zeus_map_io(void)
887{
888 pxa_map_io();
889
890 iotable_init(zeus_io_desc, ARRAY_SIZE(zeus_io_desc));
891
892 /* Clear PSPR to ensure a full restart on wake-up. */
893 PMCR = PSPR = 0;
894
895 /* enable internal 32.768Khz oscillator (ignore OSCC_OOK) */
896 OSCC |= OSCC_OON;
897
898 /* Some clock cycles later (from OSCC_ON), programme PCFR (OPDE...).
899 * float chip selects and PCMCIA */
900 PCFR = PCFR_OPDE | PCFR_DC_EN | PCFR_FS | PCFR_FP;
901}
902
903MACHINE_START(ARCOM_ZEUS, "Arcom/Eurotech ZEUS")
904 /* Maintainer: Marc Zyngier <maz@misterjones.org> */
905 .phys_io = 0x40000000,
906 .io_pg_offst = ((io_p2v(0x40000000) >> 18) & 0xfffc),
907 .boot_params = 0xa0000100,
908 .map_io = zeus_map_io,
909 .init_irq = zeus_init_irq,
910 .timer = &pxa_timer,
911 .init_machine = zeus_init,
912MACHINE_END
913
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-10 07:30:13 -0400