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[linux-2.6] / arch / arm / mach-pxa / mainstone.c
1 /*
2  *  linux/arch/arm/mach-pxa/mainstone.c
3  *
4  *  Support for the Intel HCDDBBVA0 Development Platform.
5  *  (go figure how they came up with such name...)
6  *
7  *  Author:     Nicolas Pitre
8  *  Created:    Nov 05, 2002
9  *  Copyright:  MontaVista Software Inc.
10  *
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.
14  */
15
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>
22 #include <linux/fb.h>
23 #include <linux/ioport.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/backlight.h>
27
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>
33 #include <asm/irq.h>
34 #include <asm/sizes.h>
35
36 #include <asm/mach/arch.h>
37 #include <asm/mach/map.h>
38 #include <asm/mach/irq.h>
39 #include <asm/mach/flash.h>
40
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>
49
50 #include "generic.h"
51 #include "devices.h"
52
53
54 static unsigned long mainstone_irq_enabled;
55
56 static void mainstone_mask_irq(unsigned int irq)
57 {
58         int mainstone_irq = (irq - MAINSTONE_IRQ(0));
59         MST_INTMSKENA = (mainstone_irq_enabled &= ~(1 << mainstone_irq));
60 }
61
62 static void mainstone_unmask_irq(unsigned int irq)
63 {
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));
68 }
69
70 static struct irq_chip mainstone_irq_chip = {
71         .name           = "FPGA",
72         .ack            = mainstone_mask_irq,
73         .mask           = mainstone_mask_irq,
74         .unmask         = mainstone_unmask_irq,
75 };
76
77 static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
78 {
79         unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
80         do {
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);
86                 }
87                 pending = MST_INTSETCLR & mainstone_irq_enabled;
88         } while (pending);
89 }
90
91 static void __init mainstone_init_irq(void)
92 {
93         int irq;
94
95         pxa27x_init_irq();
96
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);
103                 else
104                         set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
105         }
106         set_irq_flags(MAINSTONE_IRQ(8), 0);
107         set_irq_flags(MAINSTONE_IRQ(12), 0);
108
109         MST_INTMSKENA = 0;
110         MST_INTSETCLR = 0;
111
112         set_irq_chained_handler(IRQ_GPIO(0), mainstone_irq_handler);
113         set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
114 }
115
116 #ifdef CONFIG_PM
117
118 static int mainstone_irq_resume(struct sys_device *dev)
119 {
120         MST_INTMSKENA = mainstone_irq_enabled;
121         return 0;
122 }
123
124 static struct sysdev_class mainstone_irq_sysclass = {
125         .name = "cpld_irq",
126         .resume = mainstone_irq_resume,
127 };
128
129 static struct sys_device mainstone_irq_device = {
130         .cls = &mainstone_irq_sysclass,
131 };
132
133 static int __init mainstone_irq_device_init(void)
134 {
135         int ret = -ENODEV;
136
137         if (machine_is_mainstone()) {
138                 ret = sysdev_class_register(&mainstone_irq_sysclass);
139                 if (ret == 0)
140                         ret = sysdev_register(&mainstone_irq_device);
141         }
142         return ret;
143 }
144
145 device_initcall(mainstone_irq_device_init);
146
147 #endif
148
149
150 static struct resource smc91x_resources[] = {
151         [0] = {
152                 .start  = (MST_ETH_PHYS + 0x300),
153                 .end    = (MST_ETH_PHYS + 0xfffff),
154                 .flags  = IORESOURCE_MEM,
155         },
156         [1] = {
157                 .start  = MAINSTONE_IRQ(3),
158                 .end    = MAINSTONE_IRQ(3),
159                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
160         }
161 };
162
163 static struct platform_device smc91x_device = {
164         .name           = "smc91x",
165         .id             = 0,
166         .num_resources  = ARRAY_SIZE(smc91x_resources),
167         .resource       = smc91x_resources,
168 };
169
170 static int mst_audio_startup(struct snd_pcm_substream *substream, void *priv)
171 {
172         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
173                 MST_MSCWR2 &= ~MST_MSCWR2_AC97_SPKROFF;
174         return 0;
175 }
176
177 static void mst_audio_shutdown(struct snd_pcm_substream *substream, void *priv)
178 {
179         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
180                 MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
181 }
182
183 static long mst_audio_suspend_mask;
184
185 static void mst_audio_suspend(void *priv)
186 {
187         mst_audio_suspend_mask = MST_MSCWR2;
188         MST_MSCWR2 |= MST_MSCWR2_AC97_SPKROFF;
189 }
190
191 static void mst_audio_resume(void *priv)
192 {
193         MST_MSCWR2 &= mst_audio_suspend_mask | ~MST_MSCWR2_AC97_SPKROFF;
194 }
195
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,
201 };
202
203 static struct platform_device mst_audio_device = {
204         .name           = "pxa2xx-ac97",
205         .id             = -1,
206         .dev            = { .platform_data = &mst_audio_ops },
207 };
208
209 static struct resource flash_resources[] = {
210         [0] = {
211                 .start  = PXA_CS0_PHYS,
212                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
213                 .flags  = IORESOURCE_MEM,
214         },
215         [1] = {
216                 .start  = PXA_CS1_PHYS,
217                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
218                 .flags  = IORESOURCE_MEM,
219         },
220 };
221
222 static struct mtd_partition mainstoneflash0_partitions[] = {
223         {
224                 .name =         "Bootloader",
225                 .size =         0x00040000,
226                 .offset =       0,
227                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
228         },{
229                 .name =         "Kernel",
230                 .size =         0x00400000,
231                 .offset =       0x00040000,
232         },{
233                 .name =         "Filesystem",
234                 .size =         MTDPART_SIZ_FULL,
235                 .offset =       0x00440000
236         }
237 };
238
239 static struct flash_platform_data mst_flash_data[2] = {
240         {
241                 .map_name       = "cfi_probe",
242                 .parts          = mainstoneflash0_partitions,
243                 .nr_parts       = ARRAY_SIZE(mainstoneflash0_partitions),
244         }, {
245                 .map_name       = "cfi_probe",
246                 .parts          = NULL,
247                 .nr_parts       = 0,
248         }
249 };
250
251 static struct platform_device mst_flash_device[2] = {
252         {
253                 .name           = "pxa2xx-flash",
254                 .id             = 0,
255                 .dev = {
256                         .platform_data = &mst_flash_data[0],
257                 },
258                 .resource = &flash_resources[0],
259                 .num_resources = 1,
260         },
261         {
262                 .name           = "pxa2xx-flash",
263                 .id             = 1,
264                 .dev = {
265                         .platform_data = &mst_flash_data[1],
266                 },
267                 .resource = &flash_resources[1],
268                 .num_resources = 1,
269         },
270 };
271
272 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
273 static int mainstone_backlight_update_status(struct backlight_device *bl)
274 {
275         int brightness = bl->props.brightness;
276
277         if (bl->props.power != FB_BLANK_UNBLANK ||
278             bl->props.fb_blank != FB_BLANK_UNBLANK)
279                 brightness = 0;
280
281         if (brightness != 0) {
282                 pxa_gpio_mode(GPIO16_PWM0_MD);
283                 pxa_set_cken(CKEN_PWM0, 1);
284         }
285         PWM_CTRL0 = 0;
286         PWM_PWDUTY0 = brightness;
287         PWM_PERVAL0 = bl->props.max_brightness;
288         if (brightness == 0)
289                 pxa_set_cken(CKEN_PWM0, 0);
290         return 0; /* pointless return value */
291 }
292
293 static int mainstone_backlight_get_brightness(struct backlight_device *bl)
294 {
295         return PWM_PWDUTY0;
296 }
297
298 static /*const*/ struct backlight_ops mainstone_backlight_ops = {
299         .update_status  = mainstone_backlight_update_status,
300         .get_brightness = mainstone_backlight_get_brightness,
301 };
302
303 static void __init mainstone_backlight_register(void)
304 {
305         struct backlight_device *bl;
306
307         bl = backlight_device_register("mainstone-bl", &pxa_device_fb.dev,
308                                        NULL, &mainstone_backlight_ops);
309         if (IS_ERR(bl)) {
310                 printk(KERN_ERR "mainstone: unable to register backlight: %ld\n",
311                        PTR_ERR(bl));
312                 return;
313         }
314
315         /*
316          * broken design - register-then-setup interfaces are
317          * utterly broken by definition.
318          */
319         bl->props.max_brightness = 1023;
320         bl->props.brightness = 1023;
321         backlight_update_status(bl);
322 }
323 #else
324 #define mainstone_backlight_register()  do { } while (0)
325 #endif
326
327 static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
328         .pixclock               = 50000,
329         .xres                   = 640,
330         .yres                   = 480,
331         .bpp                    = 16,
332         .hsync_len              = 1,
333         .left_margin            = 0x9f,
334         .right_margin           = 1,
335         .vsync_len              = 44,
336         .upper_margin           = 0,
337         .lower_margin           = 0,
338         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
339 };
340
341 static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
342         .pixclock               = 110000,
343         .xres                   = 240,
344         .yres                   = 320,
345         .bpp                    = 16,
346         .hsync_len              = 4,
347         .left_margin            = 8,
348         .right_margin           = 20,
349         .vsync_len              = 3,
350         .upper_margin           = 1,
351         .lower_margin           = 10,
352         .sync                   = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
353 };
354
355 static struct pxafb_mach_info mainstone_pxafb_info = {
356         .num_modes              = 1,
357         .lccr0                  = LCCR0_Act,
358         .lccr3                  = LCCR3_PCP,
359 };
360
361 static int mainstone_mci_init(struct device *dev, irq_handler_t mstone_detect_int, void *data)
362 {
363         int err;
364
365         /*
366          * setup GPIO for PXA27x MMC controller
367          */
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);
374
375         /* make sure SD/Memory Stick multiplexer's signals
376          * are routed to MMC controller
377          */
378         MST_MSCWR1 &= ~MST_MSCWR1_MS_SEL;
379
380         err = request_irq(MAINSTONE_MMC_IRQ, mstone_detect_int, IRQF_DISABLED,
381                              "MMC card detect", data);
382         if (err)
383                 printk(KERN_ERR "mainstone_mci_init: MMC/SD: can't request MMC card detect IRQ\n");
384
385         return err;
386 }
387
388 static void mainstone_mci_setpower(struct device *dev, unsigned int vdd)
389 {
390         struct pxamci_platform_data* p_d = dev->platform_data;
391
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;
396         } else {
397                 printk(KERN_DEBUG "%s: off\n", __func__);
398                 MST_MSCWR1 &= ~MST_MSCWR1_MMC_ON;
399         }
400 }
401
402 static void mainstone_mci_exit(struct device *dev, void *data)
403 {
404         free_irq(MAINSTONE_MMC_IRQ, data);
405 }
406
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,
412 };
413
414 static void mainstone_irda_transceiver_mode(struct device *dev, int mode)
415 {
416         unsigned long flags;
417
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;
423         }
424         if (mode & IR_OFF) {
425                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_OFF;
426         } else {
427                 MST_MSCWR1 = (MST_MSCWR1 & ~MST_MSCWR1_IRDA_MASK) | MST_MSCWR1_IRDA_FULL;
428         }
429         local_irq_restore(flags);
430 }
431
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,
435 };
436
437 static struct platform_device *platform_devices[] __initdata = {
438         &smc91x_device,
439         &mst_audio_device,
440         &mst_flash_device[0],
441         &mst_flash_device[1],
442 };
443
444 static int mainstone_ohci_init(struct device *dev)
445 {
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 */
449
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);
454
455         return 0;
456 }
457
458 static struct pxaohci_platform_data mainstone_ohci_platform_data = {
459         .port_mode      = PMM_PERPORT_MODE,
460         .init           = mainstone_ohci_init,
461 };
462
463 static void __init mainstone_init(void)
464 {
465         int SW7 = 0;  /* FIXME: get from SCR (Mst doc section 3.2.1.1) */
466
467         mst_flash_data[0].width = (BOOT_DEF & 1) ? 2 : 4;
468         mst_flash_data[1].width = 4;
469
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";
473
474         printk(KERN_NOTICE "Mainstone configured to boot from %s\n",
475                mst_flash_data[0].name);
476
477         /* system bus arbiter setting
478          * - Core_Park
479          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
480          */
481         ARB_CNTRL = ARB_CORE_PARK | 0x234;
482
483         /*
484          * On Mainstone, we route AC97_SYSCLK via GPIO45 to
485          * the audio daughter card
486          */
487         pxa_gpio_mode(GPIO45_SYSCLK_AC97_MD);
488
489         GPSR(GPIO48_nPOE) =
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);
496
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);
507
508         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
509
510         /* reading Mainstone's "Virtual Configuration Register"
511            might be handy to select LCD type here */
512         if (0)
513                 mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
514         else
515                 mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;
516
517         set_pxa_fb_info(&mainstone_pxafb_info);
518         mainstone_backlight_register();
519
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);
523 }
524
525
526 static struct map_desc mainstone_io_desc[] __initdata = {
527         {       /* CPLD */
528                 .virtual        =  MST_FPGA_VIRT,
529                 .pfn            = __phys_to_pfn(MST_FPGA_PHYS),
530                 .length         = 0x00100000,
531                 .type           = MT_DEVICE
532         }
533 };
534
535 static void __init mainstone_map_io(void)
536 {
537         pxa_map_io();
538         iotable_init(mainstone_io_desc, ARRAY_SIZE(mainstone_io_desc));
539
540         /* initialize sleep mode regs (wake-up sources, etc) */
541         PGSR0 = 0x00008800;
542         PGSR1 = 0x00000002;
543         PGSR2 = 0x0001FC00;
544         PGSR3 = 0x00001F81;
545         PWER  = 0xC0000002;
546         PRER  = 0x00000002;
547         PFER  = 0x00000002;
548         /*      for use I SRAM as framebuffer.  */
549         PSLR |= 0xF04;
550         PCFR = 0x66;
551         /*      For Keypad wakeup.      */
552         KPC &=~KPC_ASACT;
553         KPC |=KPC_AS;
554         PKWR  = 0x000FD000;
555         /*      Need read PKWR back after set it.       */
556         PKWR;
557 }
558
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,
566         .timer          = &pxa_timer,
567         .init_machine   = mainstone_init,
568 MACHINE_END