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/mainstone.h>
44 #include <asm/arch/audio.h>
45 #include <asm/arch/pxafb.h>
46 #include <asm/arch/mmc.h>
47 #include <asm/arch/irda.h>
48 #include <asm/arch/ohci.h>
54 static unsigned long mainstone_irq_enabled;
56 static void mainstone_mask_irq(unsigned int irq)
58 int mainstone_irq = (irq - MAINSTONE_IRQ(0));
59 MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
62 static void mainstone_unmask_irq(unsigned int irq)
64 int mainstone_irq = (irq - MAINSTONE_IRQ(0));
65 /* the irq can be acknowledged only if deasserted, so it's done here */
66 MST_INTSETCLR &= ~(1 << mainstone_irq);
67 MST_INTMSKENA = (mainstone_irq_enabled |= (1 << mainstone_irq));
70 static struct irq_chip mainstone_irq_chip = {
72 .ack = mainstone_mask_irq,
73 .mask = mainstone_mask_irq,
74 .unmask = mainstone_unmask_irq,
77 static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
79 unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
81 GEDR(0) = GPIO_bit(0); /* clear useless edge notification */
82 if (likely(pending)) {
83 irq = MAINSTONE_IRQ(0) + __ffs(pending);
84 desc = irq_desc + irq;
85 desc_handle_irq(irq, desc);
87 pending = MST_INTSETCLR & mainstone_irq_enabled;
91 static void __init mainstone_init_irq(void)
97 /* setup extra Mainstone irqs */
98 for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
99 set_irq_chip(irq, &mainstone_irq_chip);
100 set_irq_handler(irq, handle_level_irq);
101 if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
102 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
104 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
106 set_irq_flags(MAINSTONE_IRQ(8), 0);
107 set_irq_flags(MAINSTONE_IRQ(12), 0);
112 set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
113 set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
118 static int mainstone_irq_resume(struct sys_device *dev)
120 MST_INTMSKENA = mainstone_irq_enabled;
124 static struct sysdev_class mainstone_irq_sysclass = {
126 .resume = mainstone_irq_resume,
129 static struct sys_device mainstone_irq_device = {
130 .cls = &mainstone_irq_sysclass,
133 static int __init mainstone_irq_device_init(void)
137 if (machine_is_mainstone()) {
138 ret = sysdev_class_register(&mainstone_irq_sysclass);
140 ret = sysdev_register(&mainstone_irq_device);
145 device_initcall(mainstone_irq_device_init);
150 static struct resource smc91x_resources[] = {
152 .start = (MST_ETH_PHYS + 0x300),
153 .end = (MST_ETH_PHYS + 0xfffff),
154 .flags = IORESOURCE_MEM,
157 .start = MAINSTONE_IRQ(3),
158 .end = MAINSTONE_IRQ(3),
159 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
163 static struct platform_device smc91x_device = {
166 .num_resources = ARRAY_SIZE(smc91x_resources),
167 .resource = smc91x_resources,
170 static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
172 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
173 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
177 static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
179 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
180 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
183 static long mst_audio_suspend_mask;
185 static void mst_audio_suspend(void *priv)
187 mst_audio_suspend_mask = MST_MSCWR2;
188 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
191 static void mst_audio_resume(void *priv)
193 MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
196 static pxa2xx_audio_ops_t mst_audio_ops = {
197 .startup = mst_audio_startup,
198 .shutdown = mst_audio_shutdown,
199 .suspend = mst_audio_suspend,
200 .resume = mst_audio_resume,
203 static struct platform_device mst_audio_device = {
204 .name = "pxa2xx-ac97",
206 .dev = { .platform_data = &mst_audio_ops },
209 static struct resource flash_resources[] = {
211 .start = PXA_CS0_PHYS,
212 .end = PXA_CS0_PHYS + SZ_64M - 1,
213 .flags = IORESOURCE_MEM,
216 .start = PXA_CS1_PHYS,
217 .end = PXA_CS1_PHYS + SZ_64M - 1,
218 .flags = IORESOURCE_MEM,
222 static struct mtd_partition mainstoneflash0_partitions[] = {
224 .name = "Bootloader",
227 .mask_flags = MTD_WRITEABLE /* force read-only */
231 .offset = 0x00040000,
233 .name = "Filesystem",
234 .size = MTDPART_SIZ_FULL,
239 static struct flash_platform_data mst_flash_data[2] = {
241 .map_name = "cfi_probe",
242 .parts = mainstoneflash0_partitions,
243 .nr_parts = ARRAY_SIZE(mainstoneflash0_partitions),
245 .map_name = "cfi_probe",
251 static struct platform_device mst_flash_device[2] = {
253 .name = "pxa2xx-flash",
256 .platform_data = &mst_flash_data[0],
258 .resource = &flash_resources[0],
262 .name = "pxa2xx-flash",
265 .platform_data = &mst_flash_data[1],
267 .resource = &flash_resources[1],
272 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
273 static int mainstone_backlight_update_status(struct backlight_device *bl)
275 int brightness = bl->props.brightness;
277 if (bl->props.power != FB_BLANK_UNBLANK ||
278 bl->props.fb_blank != FB_BLANK_UNBLANK)
281 if (brightness != 0) {
282 pxa_gpio_mode(GPIO16_PWM0_MD);
283 pxa_set_cken(CKEN_PWM0, 1);
286 PWM_PWDUTY0 = brightness;
287 PWM_PERVAL0 = bl->props.max_brightness;
289 pxa_set_cken(CKEN_PWM0, 0);
290 return 0; /* pointless return value */
293 static int mainstone_backlight_get_brightness(struct backlight_device *bl)
298 static /*const*/ struct backlight_ops mainstone_backlight_ops = {
299 .update_status = mainstone_backlight_update_status,
300 .get_brightness = mainstone_backlight_get_brightness,
303 static void __init mainstone_backlight_register(void)
305 struct backlight_device *bl;
307 bl = backlight_device_register("mainstone-bl", &pxa_device_fb.dev,
308 NULL, &mainstone_backlight_ops);
310 printk(KERN_ERR "mainstone: unable to register backlight: %ld\n",
316 * broken design - register-then-setup interfaces are
317 * utterly broken by definition.
319 bl->props.max_brightness = 1023;
320 bl->props.brightness = 1023;
321 backlight_update_status(bl);
324 #define mainstone_backlight_register() do { } while (0)
327 static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
338 .sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
341 static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
352 .sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
355 static struct pxafb_mach_info mainstone_pxafb_info = {
361 static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
366 * setup GPIO for PXA27x MMC controller
368 pxa_gpio_mode(GPIO32_MMCCLK_MD);
369 pxa_gpio_mode(GPIO112_MMCCMD_MD);
370 pxa_gpio_mode(GPIO92_MMCDAT0_MD);
371 pxa_gpio_mode(GPIO109_MMCDAT1_MD);
372 pxa_gpio_mode(GPIO110_MMCDAT2_MD);
373 pxa_gpio_mode(GPIO111_MMCDAT3_MD);
375 /* make sure SD/Memory Stick multiplexer's signals
376 * are routed to MMC controller
378 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
380 err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, IRQF_DISABLED,
381 "MMC card detect", data);
383 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
388 static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
390 struct pxamci_platform_data* p_d = dev->platform_data;
392 if (( 1 << vdd) & p_d->ocr_mask) {
393 printk(KERN_DEBUG "%s: on\n", __func__);
394 MST_MSCWR1 |= MST_MSCWR1_MMC_ON;
395 MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
397 printk(KERN_DEBUG "%s: off\n", __func__);
398 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
402 static void mainstone_mci_exit(struct device *dev, void *data)
404 free_irq(MAINSTONE_MMC_IRQ, data);
407 static struct pxamci_platform_data mainstone_mci_platform_data = {
408 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
409 .init = mainstone_mci_init,
410 .setpower = mainstone_mci_setpower,
411 .exit = mainstone_mci_exit,
414 static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
418 local_irq_save(flags);
419 if (mode & IR_SIRMODE) {
420 MST_MSCWR1 &= ~MST_MSCWR1_IRDA_FIR;
421 } else if (mode & IR_FIRMODE) {
422 MST_MSCWR1 |= MST_MSCWR1_IRDA_FIR;
425 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
427 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
429 local_irq_restore(flags);
432 static struct pxaficp_platform_data mainstone_ficp_platform_data = {
433 .transceiver_cap = IR_SIRMODE | IR_FIRMODE | IR_OFF,
434 .transceiver_mode = mainstone_irda_transceiver_mode,
437 static struct platform_device *platform_devices[] __initdata = {
440 &mst_flash_device[0],
441 &mst_flash_device[1],
444 static int mainstone_ohci_init(struct device *dev)
446 /* setup Port1 GPIO pin. */
447 pxa_gpio_mode( 88 | GPIO_ALT_FN_1_IN); /* USBHPWR1 */
448 pxa_gpio_mode( 89 | GPIO_ALT_FN_2_OUT); /* USBHPEN1 */
450 /* Set the Power Control Polarity Low and Power Sense
451 Polarity Low to active low. */
452 UHCHR = (UHCHR | UHCHR_PCPL | UHCHR_PSPL) &
453 ~(UHCHR_SSEP1 | UHCHR_SSEP2 | UHCHR_SSEP3 | UHCHR_SSE);
458 static struct pxaohci_platform_data mainstone_ohci_platform_data = {
459 .port_mode = PMM_PERPORT_MODE,
460 .init = mainstone_ohci_init,
463 static void __init mainstone_init(void)
465 int SW7 = 0; /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
467 mst_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
468 mst_flash_data[1].width = 4;
470 /* Compensate for SW7 which swaps the flash banks */
471 mst_flash_data[SW7].name = "processor-flash";
472 mst_flash_data[SW7 ^ 1].name = "mainboard-flash";
474 printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
475 mst_flash_data[0].name);
477 /* system bus arbiter setting
479 * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
481 ARB_CNTRL = ARB_CORE_PARK | 0x234;
484 * On Mainstone, we route AC97_SYSCLK via GPIO45 to
485 * the audio daughter card
487 pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
490 GPIO_bit(GPIO48_nPOE) |
491 GPIO_bit(GPIO49_nPWE) |
492 GPIO_bit(GPIO50_nPIOR) |
493 GPIO_bit(GPIO51_nPIOW) |
494 GPIO_bit(GPIO85_nPCE_1) |
495 GPIO_bit(GPIO54_nPCE_2);
497 pxa_gpio_mode(GPIO48_nPOE_MD);
498 pxa_gpio_mode(GPIO49_nPWE_MD);
499 pxa_gpio_mode(GPIO50_nPIOR_MD);
500 pxa_gpio_mode(GPIO51_nPIOW_MD);
501 pxa_gpio_mode(GPIO85_nPCE_1_MD);
502 pxa_gpio_mode(GPIO54_nPCE_2_MD);
503 pxa_gpio_mode(GPIO79_pSKTSEL_MD);
504 pxa_gpio_mode(GPIO55_nPREG_MD);
505 pxa_gpio_mode(GPIO56_nPWAIT_MD);
506 pxa_gpio_mode(GPIO57_nIOIS16_MD);
508 platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
510 /* reading Mainstone's "Virtual Configuration Register"
511 might be handy to select LCD type here */
513 mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
515 mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;
517 set_pxa_fb_info(&mainstone_pxafb_info);
518 mainstone_backlight_register();
520 pxa_set_mci_info(&mainstone_mci_platform_data);
521 pxa_set_ficp_info(&mainstone_ficp_platform_data);
522 pxa_set_ohci_info(&mainstone_ohci_platform_data);
526 static struct map_desc mainstone_io_desc[] __initdata = {
528 .virtual = MST_FPGA_VIRT,
529 .pfn = __phys_to_pfn(MST_FPGA_PHYS),
530 .length = 0x00100000,
535 static void __init mainstone_map_io(void)
538 iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
540 /* initialize sleep mode regs (wake-up sources, etc) */
548 /* for use I SRAM as framebuffer. */
551 /* For Keypad wakeup. */
555 /* Need read PKWR back after set it. */
559 MACHINE_START(MAINSTONE, "Intel HCDDBBVA0 Development Platform (aka Mainstone)")
560 /* Maintainer: MontaVista Software Inc. */
561 .phys_io = 0x40000000,
562 .boot_params = 0xa0000100, /* BLOB boot parameter setting */
563 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
564 .map_io = mainstone_map_io,
565 .init_irq = mainstone_init_irq,
567 .init_machine = mainstone_init,