2 * linux/arch/arm/mach-pxa/mainstone.c
4 * Support for the Intel HCDDBBVA0 Development Platform.
5 * (go figure how they came up with such name...)
7 * Author: Nicolas Pitre
8 * Created: Nov 05, 2002
9 * Copyright: MontaVista Software Inc.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/sysdev.h>
19 #include <linux/interrupt.h>
20 #include <linux/sched.h>
21 #include <linux/bitops.h>
23 #include <linux/ioport.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/backlight.h>
28 #include <asm/types.h>
29 #include <asm/setup.h>
30 #include <asm/memory.h>
31 #include <asm/mach-types.h>
32 #include <asm/hardware.h>
34 #include <asm/sizes.h>
36 #include <asm/mach/arch.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/irq.h>
39 #include <asm/mach/flash.h>
41 #include <asm/arch/pxa-regs.h>
42 #include <asm/arch/pxa2xx-regs.h>
43 #include <asm/arch/pxa2xx-gpio.h>
44 #include <asm/arch/mainstone.h>
45 #include <asm/arch/audio.h>
46 #include <asm/arch/pxafb.h>
47 #include <asm/arch/mmc.h>
48 #include <asm/arch/irda.h>
49 #include <asm/arch/ohci.h>
55 static unsigned long mainstone_irq_enabled;
57 static void mainstone_mask_irq(unsigned int irq)
59 int mainstone_irq = (irq - MAINSTONE_IRQ(0));
60 MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
63 static void mainstone_unmask_irq(unsigned int irq)
65 int mainstone_irq = (irq - MAINSTONE_IRQ(0));
66 /* the irq can be acknowledged only if deasserted, so it's done here */
67 MST_INTSETCLR &= ~(1 << mainstone_irq);
68 MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
71 static struct irq_chip mainstone_irq_chip = {
73 .ack = mainstone_mask_irq,
74 .mask = mainstone_mask_irq,
75 .unmask = mainstone_unmask_irq,
78 static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
80 unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
82 GEDR(0) = GPIO_bit(0); /* clear useless edge notification */
83 if (likely(pending)) {
84 irq = MAINSTONE_IRQ(0) + __ffs(pending);
85 desc = irq_desc + irq;
86 desc_handle_irq(irq, desc);
88 pending = MST_INTSETCLR & mainstone_irq_enabled;
92 static void __init mainstone_init_irq(void)
98 /* setup extra Mainstone irqs */
99 for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
100 set_irq_chip(irq, &mainstone_irq_chip);
101 set_irq_handler(irq, handle_level_irq);
102 if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
103 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
105 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
107 set_irq_flags(MAINSTONE_IRQ(8), 0);
108 set_irq_flags(MAINSTONE_IRQ(12), 0);
113 set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
114 set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
119 static int mainstone_irq_resume(struct sys_device *dev)
121 MST_INTMSKENA = mainstone_irq_enabled;
125 static struct sysdev_class mainstone_irq_sysclass = {
127 .resume = mainstone_irq_resume,
130 static struct sys_device mainstone_irq_device = {
131 .cls = &mainstone_irq_sysclass,
134 static int __init mainstone_irq_device_init(void)
138 if (machine_is_mainstone()) {
139 ret = sysdev_class_register(&mainstone_irq_sysclass);
141 ret = sysdev_register(&mainstone_irq_device);
146 device_initcall(mainstone_irq_device_init);
151 static struct resource smc91x_resources[] = {
153 .start = (MST_ETH_PHYS + 0x300),
154 .end = (MST_ETH_PHYS + 0xfffff),
155 .flags = IORESOURCE_MEM,
158 .start = MAINSTONE_IRQ(3),
159 .end = MAINSTONE_IRQ(3),
160 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
164 static struct platform_device smc91x_device = {
167 .num_resources = ARRAY_SIZE(smc91x_resources),
168 .resource = smc91x_resources,
171 static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
173 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
174 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
178 static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
180 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
181 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
184 static long mst_audio_suspend_mask;
186 static void mst_audio_suspend(void *priv)
188 mst_audio_suspend_mask = MST_MSCWR2;
189 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
192 static void mst_audio_resume(void *priv)
194 MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
197 static pxa2xx_audio_ops_t mst_audio_ops = {
198 .startup = mst_audio_startup,
199 .shutdown = mst_audio_shutdown,
200 .suspend = mst_audio_suspend,
201 .resume = mst_audio_resume,
204 static struct platform_device mst_audio_device = {
205 .name = "pxa2xx-ac97",
207 .dev = { .platform_data = &mst_audio_ops },
210 static struct resource flash_resources[] = {
212 .start = PXA_CS0_PHYS,
213 .end = PXA_CS0_PHYS + SZ_64M - 1,
214 .flags = IORESOURCE_MEM,
217 .start = PXA_CS1_PHYS,
218 .end = PXA_CS1_PHYS + SZ_64M - 1,
219 .flags = IORESOURCE_MEM,
223 static struct mtd_partition mainstoneflash0_partitions[] = {
225 .name = "Bootloader",
228 .mask_flags = MTD_WRITEABLE /* force read-only */
232 .offset = 0x00040000,
234 .name = "Filesystem",
235 .size = MTDPART_SIZ_FULL,
240 static struct flash_platform_data mst_flash_data[2] = {
242 .map_name = "cfi_probe",
243 .parts = mainstoneflash0_partitions,
244 .nr_parts = ARRAY_SIZE(mainstoneflash0_partitions),
246 .map_name = "cfi_probe",
252 static struct platform_device mst_flash_device[2] = {
254 .name = "pxa2xx-flash",
257 .platform_data = &mst_flash_data[0],
259 .resource = &flash_resources[0],
263 .name = "pxa2xx-flash",
266 .platform_data = &mst_flash_data[1],
268 .resource = &flash_resources[1],
273 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
274 static int mainstone_backlight_update_status(struct backlight_device *bl)
276 int brightness = bl->props.brightness;
278 if (bl->props.power != FB_BLANK_UNBLANK ||
279 bl->props.fb_blank != FB_BLANK_UNBLANK)
282 if (brightness != 0) {
283 pxa_gpio_mode(GPIO16_PWM0_MD);
284 pxa_set_cken(CKEN_PWM0, 1);
287 PWM_PWDUTY0 = brightness;
288 PWM_PERVAL0 = bl->props.max_brightness;
290 pxa_set_cken(CKEN_PWM0, 0);
291 return 0; /* pointless return value */
294 static int mainstone_backlight_get_brightness(struct backlight_device *bl)
299 static /*const*/ struct backlight_ops mainstone_backlight_ops = {
300 .update_status = mainstone_backlight_update_status,
301 .get_brightness = mainstone_backlight_get_brightness,
304 static void __init mainstone_backlight_register(void)
306 struct backlight_device *bl;
308 bl = backlight_device_register("mainstone-bl", &pxa_device_fb.dev,
309 NULL, &mainstone_backlight_ops);
311 printk(KERN_ERR "mainstone: unable to register backlight: %ld\n",
317 * broken design - register-then-setup interfaces are
318 * utterly broken by definition.
320 bl->props.max_brightness = 1023;
321 bl->props.brightness = 1023;
322 backlight_update_status(bl);
325 #define mainstone_backlight_register() do { } while (0)
328 static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
339 .sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
342 static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
353 .sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
356 static struct pxafb_mach_info mainstone_pxafb_info = {
362 static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
367 * setup GPIO for PXA27x MMC controller
369 pxa_gpio_mode(GPIO32_MMCCLK_MD);
370 pxa_gpio_mode(GPIO112_MMCCMD_MD);
371 pxa_gpio_mode(GPIO92_MMCDAT0_MD);
372 pxa_gpio_mode(GPIO109_MMCDAT1_MD);
373 pxa_gpio_mode(GPIO110_MMCDAT2_MD);
374 pxa_gpio_mode(GPIO111_MMCDAT3_MD);
376 /* make sure SD/Memory Stick multiplexer's signals
377 * are routed to MMC controller
379 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
381 err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, IRQF_DISABLED,
382 "MMC card detect", data);
384 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
389 static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
391 struct pxamci_platform_data* p_d = dev->platform_data;
393 if (( 1 << vdd) & p_d->ocr_mask) {
394 printk(KERN_DEBUG "%s: on\n", __func__);
395 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
396 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
398 printk(KERN_DEBUG "%s: off\n", __func__);
399 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
403 static void mainstone_mci_exit(struct device *dev, void *data)
405 free_irq(MAINSTONE_MMC_IRQ, data);
408 static struct pxamci_platform_data mainstone_mci_platform_data = {
409 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
410 .init = mainstone_mci_init,
411 .setpower = mainstone_mci_setpower,
412 .exit = mainstone_mci_exit,
415 static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
419 local_irq_save(flags);
420 if (mode & IR_SIRMODE) {
421 MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
422 } else if (mode & IR_FIRMODE) {
423 MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
426 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
428 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
430 local_irq_restore(flags);
433 static struct pxaficp_platform_data mainstone_ficp_platform_data = {
434 .transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
435 .transceiver_mode = mainstone_irda_transceiver_mode,
438 static struct platform_device *platform_devices[] __initdata = {
441 &mst_flash_device[0],
442 &mst_flash_device[1],
445 static int mainstone_ohci_init(struct device *dev)
447 /* setup Port1 GPIO pin. */
448 pxa_gpio_mode( 88 | GPIO_ALT_FN_1_IN); /* USBHPWR1 */
449 pxa_gpio_mode( 89 | GPIO_ALT_FN_2_OUT); /* USBHPEN1 */
451 /* Set the Power Control Polarity Low and Power Sense
452 Polarity Low to active low. */
453 UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
454 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
459 static struct pxaohci_platform_data mainstone_ohci_platform_data = {
460 .port_mode = PMM_PERPORT_MODE,
461 .init = mainstone_ohci_init,
464 static void __init mainstone_init(void)
466 int SW7 = 0; /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
468 mst_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
469 mst_flash_data[1].width = 4;
471 /* Compensate for SW7 which swaps the flash banks */
472 mst_flash_data[SW7].name = "processor-flash";
473 mst_flash_data[SW7 ^ 1].name = "mainboard-flash";
475 printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
476 mst_flash_data[0].name);
478 /* system bus arbiter setting
480 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
482 ARB_CNTRL = ARB_CORE_PARK | 0x234;
485 * On Mainstone, we route AC97_SYSCLK via GPIO45 to
486 * the audio daughter card
488 pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
491 GPIO_bit(GPIO48_nPOE) |
492 GPIO_bit(GPIO49_nPWE) |
493 GPIO_bit(GPIO50_nPIOR) |
494 GPIO_bit(GPIO51_nPIOW) |
495 GPIO_bit(GPIO85_nPCE_1) |
496 GPIO_bit(GPIO54_nPCE_2);
498 pxa_gpio_mode(GPIO48_nPOE_MD);
499 pxa_gpio_mode(GPIO49_nPWE_MD);
500 pxa_gpio_mode(GPIO50_nPIOR_MD);
501 pxa_gpio_mode(GPIO51_nPIOW_MD);
502 pxa_gpio_mode(GPIO85_nPCE_1_MD);
503 pxa_gpio_mode(GPIO54_nPCE_2_MD);
504 pxa_gpio_mode(GPIO79_pSKTSEL_MD);
505 pxa_gpio_mode(GPIO55_nPREG_MD);
506 pxa_gpio_mode(GPIO56_nPWAIT_MD);
507 pxa_gpio_mode(GPIO57_nIOIS16_MD);
509 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
511 /* reading Mainstone's "Virtual Configuration Register"
512 might be handy to select LCD type here */
514 mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
516 mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;
518 set_pxa_fb_info(&mainstone_pxafb_info);
519 mainstone_backlight_register();
521 pxa_set_mci_info(&mainstone_mci_platform_data);
522 pxa_set_ficp_info(&mainstone_ficp_platform_data);
523 pxa_set_ohci_info(&mainstone_ohci_platform_data);
527 static struct map_desc mainstone_io_desc[] __initdata = {
529 .virtual = MST_FPGA_VIRT,
530 .pfn = __phys_to_pfn(MST_FPGA_PHYS),
531 .length = 0x00100000,
536 static void __init mainstone_map_io(void)
539 iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
541 /* initialize sleep mode regs (wake-up sources, etc) */
549 /* for use I SRAM as framebuffer. */
552 /* For Keypad wakeup. */
556 /* Need read PKWR back after set it. */
560 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
561 /* Maintainer: MontaVista Software Inc. */
562 .phys_io = 0x40000000,
563 .boot_params = 0xa0000100, /* BLOB boot parameter setting */
564 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
565 .map_io = mainstone_map_io,
566 .init_irq = mainstone_init_irq,
568 .init_machine = mainstone_init,