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Linux/arch/arm/mach-pxa/lpd270.c

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  1 /*
  2  * linux/arch/arm/mach-pxa/lpd270.c
  3  *
  4  * Support for the LogicPD PXA270 Card Engine.
  5  * Derived from the mainstone code, which carries these notices:
  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 #include <linux/gpio.h>
 16 #include <linux/init.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/syscore_ops.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/pwm_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 <mach/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 <mach/pxa27x.h>
 42 #include <mach/lpd270.h>
 43 #include <mach/audio.h>
 44 #include <linux/platform_data/video-pxafb.h>
 45 #include <linux/platform_data/mmc-pxamci.h>
 46 #include <linux/platform_data/irda-pxaficp.h>
 47 #include <linux/platform_data/usb-ohci-pxa27x.h>
 48 #include <mach/smemc.h>
 49 
 50 #include "generic.h"
 51 #include "devices.h"
 52 
 53 static unsigned long lpd270_pin_config[] __initdata = {
 54         /* Chip Selects */
 55         GPIO15_nCS_1,   /* Mainboard Flash */
 56         GPIO78_nCS_2,   /* CPLD + Ethernet */
 57 
 58         /* LCD - 16bpp Active TFT */
 59         GPIO58_LCD_LDD_0,
 60         GPIO59_LCD_LDD_1,
 61         GPIO60_LCD_LDD_2,
 62         GPIO61_LCD_LDD_3,
 63         GPIO62_LCD_LDD_4,
 64         GPIO63_LCD_LDD_5,
 65         GPIO64_LCD_LDD_6,
 66         GPIO65_LCD_LDD_7,
 67         GPIO66_LCD_LDD_8,
 68         GPIO67_LCD_LDD_9,
 69         GPIO68_LCD_LDD_10,
 70         GPIO69_LCD_LDD_11,
 71         GPIO70_LCD_LDD_12,
 72         GPIO71_LCD_LDD_13,
 73         GPIO72_LCD_LDD_14,
 74         GPIO73_LCD_LDD_15,
 75         GPIO74_LCD_FCLK,
 76         GPIO75_LCD_LCLK,
 77         GPIO76_LCD_PCLK,
 78         GPIO77_LCD_BIAS,
 79         GPIO16_PWM0_OUT,        /* Backlight */
 80 
 81         /* USB Host */
 82         GPIO88_USBH1_PWR,
 83         GPIO89_USBH1_PEN,
 84 
 85         /* AC97 */
 86         GPIO28_AC97_BITCLK,
 87         GPIO29_AC97_SDATA_IN_0,
 88         GPIO30_AC97_SDATA_OUT,
 89         GPIO31_AC97_SYNC,
 90         GPIO45_AC97_SYSCLK,
 91 
 92         GPIO1_GPIO | WAKEUP_ON_EDGE_BOTH,
 93 };
 94 
 95 static unsigned int lpd270_irq_enabled;
 96 
 97 static void lpd270_mask_irq(struct irq_data *d)
 98 {
 99         int lpd270_irq = d->irq - LPD270_IRQ(0);
100 
101         __raw_writew(~(1 << lpd270_irq), LPD270_INT_STATUS);
102 
103         lpd270_irq_enabled &= ~(1 << lpd270_irq);
104         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
105 }
106 
107 static void lpd270_unmask_irq(struct irq_data *d)
108 {
109         int lpd270_irq = d->irq - LPD270_IRQ(0);
110 
111         lpd270_irq_enabled |= 1 << lpd270_irq;
112         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
113 }
114 
115 static struct irq_chip lpd270_irq_chip = {
116         .name           = "CPLD",
117         .irq_ack        = lpd270_mask_irq,
118         .irq_mask       = lpd270_mask_irq,
119         .irq_unmask     = lpd270_unmask_irq,
120 };
121 
122 static void lpd270_irq_handler(unsigned int irq, struct irq_desc *desc)
123 {
124         unsigned long pending;
125 
126         pending = __raw_readw(LPD270_INT_STATUS) & lpd270_irq_enabled;
127         do {
128                 /* clear useless edge notification */
129                 desc->irq_data.chip->irq_ack(&desc->irq_data);
130                 if (likely(pending)) {
131                         irq = LPD270_IRQ(0) + __ffs(pending);
132                         generic_handle_irq(irq);
133 
134                         pending = __raw_readw(LPD270_INT_STATUS) &
135                                                 lpd270_irq_enabled;
136                 }
137         } while (pending);
138 }
139 
140 static void __init lpd270_init_irq(void)
141 {
142         int irq;
143 
144         pxa27x_init_irq();
145 
146         __raw_writew(0, LPD270_INT_MASK);
147         __raw_writew(0, LPD270_INT_STATUS);
148 
149         /* setup extra LogicPD PXA270 irqs */
150         for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
151                 irq_set_chip_and_handler(irq, &lpd270_irq_chip,
152                                          handle_level_irq);
153                 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
154         }
155         irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), lpd270_irq_handler);
156         irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING);
157 }
158 
159 
160 #ifdef CONFIG_PM
161 static void lpd270_irq_resume(void)
162 {
163         __raw_writew(lpd270_irq_enabled, LPD270_INT_MASK);
164 }
165 
166 static struct syscore_ops lpd270_irq_syscore_ops = {
167         .resume = lpd270_irq_resume,
168 };
169 
170 static int __init lpd270_irq_device_init(void)
171 {
172         if (machine_is_logicpd_pxa270()) {
173                 register_syscore_ops(&lpd270_irq_syscore_ops);
174                 return 0;
175         }
176         return -ENODEV;
177 }
178 
179 device_initcall(lpd270_irq_device_init);
180 #endif
181 
182 
183 static struct resource smc91x_resources[] = {
184         [0] = {
185                 .start  = LPD270_ETH_PHYS,
186                 .end    = (LPD270_ETH_PHYS + 0xfffff),
187                 .flags  = IORESOURCE_MEM,
188         },
189         [1] = {
190                 .start  = LPD270_ETHERNET_IRQ,
191                 .end    = LPD270_ETHERNET_IRQ,
192                 .flags  = IORESOURCE_IRQ,
193         },
194 };
195 
196 static struct platform_device smc91x_device = {
197         .name           = "smc91x",
198         .id             = 0,
199         .num_resources  = ARRAY_SIZE(smc91x_resources),
200         .resource       = smc91x_resources,
201 };
202 
203 static struct resource lpd270_flash_resources[] = {
204         [0] = {
205                 .start  = PXA_CS0_PHYS,
206                 .end    = PXA_CS0_PHYS + SZ_64M - 1,
207                 .flags  = IORESOURCE_MEM,
208         },
209         [1] = {
210                 .start  = PXA_CS1_PHYS,
211                 .end    = PXA_CS1_PHYS + SZ_64M - 1,
212                 .flags  = IORESOURCE_MEM,
213         },
214 };
215 
216 static struct mtd_partition lpd270_flash0_partitions[] = {
217         {
218                 .name =         "Bootloader",
219                 .size =         0x00040000,
220                 .offset =       0,
221                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
222         }, {
223                 .name =         "Kernel",
224                 .size =         0x00400000,
225                 .offset =       0x00040000,
226         }, {
227                 .name =         "Filesystem",
228                 .size =         MTDPART_SIZ_FULL,
229                 .offset =       0x00440000
230         },
231 };
232 
233 static struct flash_platform_data lpd270_flash_data[2] = {
234         {
235                 .name           = "processor-flash",
236                 .map_name       = "cfi_probe",
237                 .parts          = lpd270_flash0_partitions,
238                 .nr_parts       = ARRAY_SIZE(lpd270_flash0_partitions),
239         }, {
240                 .name           = "mainboard-flash",
241                 .map_name       = "cfi_probe",
242                 .parts          = NULL,
243                 .nr_parts       = 0,
244         }
245 };
246 
247 static struct platform_device lpd270_flash_device[2] = {
248         {
249                 .name           = "pxa2xx-flash",
250                 .id             = 0,
251                 .dev = {
252                         .platform_data  = &lpd270_flash_data[0],
253                 },
254                 .resource       = &lpd270_flash_resources[0],
255                 .num_resources  = 1,
256         }, {
257                 .name           = "pxa2xx-flash",
258                 .id             = 1,
259                 .dev = {
260                         .platform_data  = &lpd270_flash_data[1],
261                 },
262                 .resource       = &lpd270_flash_resources[1],
263                 .num_resources  = 1,
264         },
265 };
266 
267 static struct platform_pwm_backlight_data lpd270_backlight_data = {
268         .pwm_id         = 0,
269         .max_brightness = 1,
270         .dft_brightness = 1,
271         .pwm_period_ns  = 78770,
272         .enable_gpio    = -1,
273 };
274 
275 static struct platform_device lpd270_backlight_device = {
276         .name           = "pwm-backlight",
277         .dev            = {
278                 .parent = &pxa27x_device_pwm0.dev,
279                 .platform_data = &lpd270_backlight_data,
280         },
281 };
282 
283 /* 5.7" TFT QVGA (LoLo display number 1) */
284 static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
285         .pixclock               = 150000,
286         .xres                   = 320,
287         .yres                   = 240,
288         .bpp                    = 16,
289         .hsync_len              = 0x14,
290         .left_margin            = 0x28,
291         .right_margin           = 0x0a,
292         .vsync_len              = 0x02,
293         .upper_margin           = 0x08,
294         .lower_margin           = 0x14,
295         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
296 };
297 
298 static struct pxafb_mach_info sharp_lq057q3dc02 = {
299         .modes                  = &sharp_lq057q3dc02_mode,
300         .num_modes              = 1,
301         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
302                                   LCD_ALTERNATE_MAPPING,
303 };
304 
305 /* 12.1" TFT SVGA (LoLo display number 2) */
306 static struct pxafb_mode_info sharp_lq121s1dg31_mode = {
307         .pixclock               = 50000,
308         .xres                   = 800,
309         .yres                   = 600,
310         .bpp                    = 16,
311         .hsync_len              = 0x05,
312         .left_margin            = 0x52,
313         .right_margin           = 0x05,
314         .vsync_len              = 0x04,
315         .upper_margin           = 0x14,
316         .lower_margin           = 0x0a,
317         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
318 };
319 
320 static struct pxafb_mach_info sharp_lq121s1dg31 = {
321         .modes                  = &sharp_lq121s1dg31_mode,
322         .num_modes              = 1,
323         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
324                                   LCD_ALTERNATE_MAPPING,
325 };
326 
327 /* 3.6" TFT QVGA (LoLo display number 3) */
328 static struct pxafb_mode_info sharp_lq036q1da01_mode = {
329         .pixclock               = 150000,
330         .xres                   = 320,
331         .yres                   = 240,
332         .bpp                    = 16,
333         .hsync_len              = 0x0e,
334         .left_margin            = 0x04,
335         .right_margin           = 0x0a,
336         .vsync_len              = 0x03,
337         .upper_margin           = 0x03,
338         .lower_margin           = 0x03,
339         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
340 };
341 
342 static struct pxafb_mach_info sharp_lq036q1da01 = {
343         .modes                  = &sharp_lq036q1da01_mode,
344         .num_modes              = 1,
345         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
346                                   LCD_ALTERNATE_MAPPING,
347 };
348 
349 /* 6.4" TFT VGA (LoLo display number 5) */
350 static struct pxafb_mode_info sharp_lq64d343_mode = {
351         .pixclock               = 25000,
352         .xres                   = 640,
353         .yres                   = 480,
354         .bpp                    = 16,
355         .hsync_len              = 0x31,
356         .left_margin            = 0x89,
357         .right_margin           = 0x19,
358         .vsync_len              = 0x12,
359         .upper_margin           = 0x22,
360         .lower_margin           = 0x00,
361         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
362 };
363 
364 static struct pxafb_mach_info sharp_lq64d343 = {
365         .modes                  = &sharp_lq64d343_mode,
366         .num_modes              = 1,
367         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
368                                   LCD_ALTERNATE_MAPPING,
369 };
370 
371 /* 10.4" TFT VGA (LoLo display number 7) */
372 static struct pxafb_mode_info sharp_lq10d368_mode = {
373         .pixclock               = 25000,
374         .xres                   = 640,
375         .yres                   = 480,
376         .bpp                    = 16,
377         .hsync_len              = 0x31,
378         .left_margin            = 0x89,
379         .right_margin           = 0x19,
380         .vsync_len              = 0x12,
381         .upper_margin           = 0x22,
382         .lower_margin           = 0x00,
383         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
384 };
385 
386 static struct pxafb_mach_info sharp_lq10d368 = {
387         .modes                  = &sharp_lq10d368_mode,
388         .num_modes              = 1,
389         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
390                                   LCD_ALTERNATE_MAPPING,
391 };
392 
393 /* 3.5" TFT QVGA (LoLo display number 8) */
394 static struct pxafb_mode_info sharp_lq035q7db02_20_mode = {
395         .pixclock               = 150000,
396         .xres                   = 240,
397         .yres                   = 320,
398         .bpp                    = 16,
399         .hsync_len              = 0x0e,
400         .left_margin            = 0x0a,
401         .right_margin           = 0x0a,
402         .vsync_len              = 0x03,
403         .upper_margin           = 0x05,
404         .lower_margin           = 0x14,
405         .sync                   = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
406 };
407 
408 static struct pxafb_mach_info sharp_lq035q7db02_20 = {
409         .modes                  = &sharp_lq035q7db02_20_mode,
410         .num_modes              = 1,
411         .lcd_conn               = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL |
412                                   LCD_ALTERNATE_MAPPING,
413 };
414 
415 static struct pxafb_mach_info *lpd270_lcd_to_use;
416 
417 static int __init lpd270_set_lcd(char *str)
418 {
419         if (!strnicmp(str, "lq057q3dc02", 11)) {
420                 lpd270_lcd_to_use = &sharp_lq057q3dc02;
421         } else if (!strnicmp(str, "lq121s1dg31", 11)) {
422                 lpd270_lcd_to_use = &sharp_lq121s1dg31;
423         } else if (!strnicmp(str, "lq036q1da01", 11)) {
424                 lpd270_lcd_to_use = &sharp_lq036q1da01;
425         } else if (!strnicmp(str, "lq64d343", 8)) {
426                 lpd270_lcd_to_use = &sharp_lq64d343;
427         } else if (!strnicmp(str, "lq10d368", 8)) {
428                 lpd270_lcd_to_use = &sharp_lq10d368;
429         } else if (!strnicmp(str, "lq035q7db02-20", 14)) {
430                 lpd270_lcd_to_use = &sharp_lq035q7db02_20;
431         } else {
432                 printk(KERN_INFO "lpd270: unknown lcd panel [%s]\n", str);
433         }
434 
435         return 1;
436 }
437 
438 __setup("lcd=", lpd270_set_lcd);
439 
440 static struct platform_device *platform_devices[] __initdata = {
441         &smc91x_device,
442         &lpd270_backlight_device,
443         &lpd270_flash_device[0],
444         &lpd270_flash_device[1],
445 };
446 
447 static struct pxaohci_platform_data lpd270_ohci_platform_data = {
448         .port_mode      = PMM_PERPORT_MODE,
449         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
450 };
451 
452 static void __init lpd270_init(void)
453 {
454         pxa2xx_mfp_config(ARRAY_AND_SIZE(lpd270_pin_config));
455 
456         pxa_set_ffuart_info(NULL);
457         pxa_set_btuart_info(NULL);
458         pxa_set_stuart_info(NULL);
459 
460         lpd270_flash_data[0].width = (__raw_readl(BOOT_DEF) & 1) ? 2 : 4;
461         lpd270_flash_data[1].width = 4;
462 
463         /*
464          * System bus arbiter setting:
465          * - Core_Park
466          * - LCD_wt:DMA_wt:CORE_Wt = 2:3:4
467          */
468         ARB_CNTRL = ARB_CORE_PARK | 0x234;
469 
470         platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
471 
472         pxa_set_ac97_info(NULL);
473 
474         if (lpd270_lcd_to_use != NULL)
475                 pxa_set_fb_info(NULL, lpd270_lcd_to_use);
476 
477         pxa_set_ohci_info(&lpd270_ohci_platform_data);
478 }
479 
480 
481 static struct map_desc lpd270_io_desc[] __initdata = {
482         {
483                 .virtual        = (unsigned long)LPD270_CPLD_VIRT,
484                 .pfn            = __phys_to_pfn(LPD270_CPLD_PHYS),
485                 .length         = LPD270_CPLD_SIZE,
486                 .type           = MT_DEVICE,
487         },
488 };
489 
490 static void __init lpd270_map_io(void)
491 {
492         pxa27x_map_io();
493         iotable_init(lpd270_io_desc, ARRAY_SIZE(lpd270_io_desc));
494 
495         /* for use I SRAM as framebuffer.  */
496         PSLR |= 0x00000F04;
497         PCFR  = 0x00000066;
498 }
499 
500 MACHINE_START(LOGICPD_PXA270, "LogicPD PXA270 Card Engine")
501         /* Maintainer: Peter Barada */
502         .atag_offset    = 0x100,
503         .map_io         = lpd270_map_io,
504         .nr_irqs        = LPD270_NR_IRQS,
505         .init_irq       = lpd270_init_irq,
506         .handle_irq     = pxa27x_handle_irq,
507         .init_time      = pxa_timer_init,
508         .init_machine   = lpd270_init,
509         .restart        = pxa_restart,
510 MACHINE_END
511 

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