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Linux/arch/arm/mach-pxa/trizeps4.c

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  1 /*
  2  *  linux/arch/arm/mach-pxa/trizeps4.c
  3  *
  4  *  Support for the Keith und Koep Trizeps4 Module Platform.
  5  *
  6  *  Author:     Jürgen Schindele
  7  *  Created:    20 02, 2006
  8  *  Copyright:  Jürgen Schindele
  9  *
 10  *  This program is free software; you can redistribute it and/or modify
 11  *  it under the terms of the GNU General Public License version 2 as
 12  *  published by the Free Software Foundation.
 13  */
 14 
 15 #include <linux/init.h>
 16 #include <linux/kernel.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/interrupt.h>
 19 #include <linux/export.h>
 20 #include <linux/sched.h>
 21 #include <linux/bitops.h>
 22 #include <linux/fb.h>
 23 #include <linux/ioport.h>
 24 #include <linux/delay.h>
 25 #include <linux/gpio.h>
 26 #include <linux/dm9000.h>
 27 #include <linux/mtd/physmap.h>
 28 #include <linux/mtd/partitions.h>
 29 #include <linux/regulator/machine.h>
 30 #include <linux/i2c/pxa-i2c.h>
 31 
 32 #include <asm/types.h>
 33 #include <asm/setup.h>
 34 #include <asm/memory.h>
 35 #include <asm/mach-types.h>
 36 #include <asm/irq.h>
 37 #include <asm/sizes.h>
 38 
 39 #include <asm/mach/arch.h>
 40 #include <asm/mach/map.h>
 41 #include <asm/mach/irq.h>
 42 #include <asm/mach/flash.h>
 43 
 44 #include <mach/pxa27x.h>
 45 #include <mach/trizeps4.h>
 46 #include <mach/audio.h>
 47 #include <linux/platform_data/video-pxafb.h>
 48 #include <linux/platform_data/mmc-pxamci.h>
 49 #include <linux/platform_data/irda-pxaficp.h>
 50 #include <linux/platform_data/usb-ohci-pxa27x.h>
 51 #include <mach/smemc.h>
 52 
 53 #include "generic.h"
 54 #include "devices.h"
 55 
 56 /*      comment out the following line if you want to use the
 57  *      Standard UART from PXA for serial / irda transmission
 58  *      and acivate it if you have status leds connected */
 59 #define STATUS_LEDS_ON_STUART_PINS 1
 60 
 61 /*****************************************************************************
 62  * MultiFunctionPins of CPU
 63  *****************************************************************************/
 64 static unsigned long trizeps4_pin_config[] __initdata = {
 65         /* Chip Selects */
 66         GPIO15_nCS_1,           /* DiskOnChip CS */
 67         GPIO93_GPIO,            /* TRIZEPS4_DOC_IRQ */
 68         GPIO94_GPIO,            /* DOC lock */
 69 
 70         GPIO78_nCS_2,           /* DM9000 CS */
 71         GPIO101_GPIO,           /* TRIZEPS4_ETH_IRQ */
 72 
 73         GPIO79_nCS_3,           /* Logic CS */
 74         GPIO0_GPIO | WAKEUP_ON_EDGE_RISE,       /* Logic irq */
 75 
 76         /* AC97 */
 77         GPIO28_AC97_BITCLK,
 78         GPIO29_AC97_SDATA_IN_0,
 79         GPIO30_AC97_SDATA_OUT,
 80         GPIO31_AC97_SYNC,
 81 
 82         /* LCD - 16bpp Active TFT */
 83         GPIOxx_LCD_TFT_16BPP,
 84 
 85         /* UART */
 86         GPIO9_FFUART_CTS,
 87         GPIO10_FFUART_DCD,
 88         GPIO16_FFUART_TXD,
 89         GPIO33_FFUART_DSR,
 90         GPIO38_FFUART_RI,
 91         GPIO82_FFUART_DTR,
 92         GPIO83_FFUART_RTS,
 93         GPIO96_FFUART_RXD,
 94 
 95         GPIO42_BTUART_RXD,
 96         GPIO43_BTUART_TXD,
 97         GPIO44_BTUART_CTS,
 98         GPIO45_BTUART_RTS,
 99 #ifdef STATUS_LEDS_ON_STUART_PINS
100         GPIO46_GPIO,
101         GPIO47_GPIO,
102 #else
103         GPIO46_STUART_RXD,
104         GPIO47_STUART_TXD,
105 #endif
106         /* PCMCIA */
107         GPIO11_GPIO,                    /* TRIZEPS4_CD_IRQ */
108         GPIO13_GPIO,                    /* TRIZEPS4_READY_NINT */
109         GPIO48_nPOE,
110         GPIO49_nPWE,
111         GPIO50_nPIOR,
112         GPIO51_nPIOW,
113         GPIO54_nPCE_2,
114         GPIO55_nPREG,
115         GPIO56_nPWAIT,
116         GPIO57_nIOIS16,
117         GPIO102_nPCE_1,
118         GPIO104_PSKTSEL,
119 
120         /* MultiMediaCard */
121         GPIO32_MMC_CLK,
122         GPIO92_MMC_DAT_0,
123         GPIO109_MMC_DAT_1,
124         GPIO110_MMC_DAT_2,
125         GPIO111_MMC_DAT_3,
126         GPIO112_MMC_CMD,
127         GPIO12_GPIO,                    /* TRIZEPS4_MMC_IRQ */
128 
129         /* USB OHCI */
130         GPIO88_USBH1_PWR,               /* USBHPWR1 */
131         GPIO89_USBH1_PEN,               /* USBHPEN1 */
132 
133         /* I2C */
134         GPIO117_I2C_SCL,
135         GPIO118_I2C_SDA,
136 };
137 
138 static unsigned long trizeps4wl_pin_config[] __initdata = {
139         /* SSP 2 */
140         GPIO14_SSP2_SFRM,
141         GPIO19_SSP2_SCLK,
142         GPIO53_GPIO,                    /* TRIZEPS4_SPI_IRQ */
143         GPIO86_SSP2_RXD,
144         GPIO87_SSP2_TXD,
145 };
146 
147 /****************************************************************************
148  * ONBOARD FLASH
149  ****************************************************************************/
150 static struct mtd_partition trizeps4_partitions[] = {
151         {
152                 .name =         "Bootloader",
153                 .offset =       0x00000000,
154                 .size =         0x00040000,
155                 .mask_flags =   MTD_WRITEABLE  /* force read-only */
156         }, {
157                 .name =         "Backup",
158                 .offset =       0x00040000,
159                 .size =         0x00040000,
160         }, {
161                 .name =         "Image",
162                 .offset =       0x00080000,
163                 .size =         0x01080000,
164         }, {
165                 .name =         "IPSM",
166                 .offset =       0x01100000,
167                 .size =         0x00e00000,
168         }, {
169                 .name =         "Registry",
170                 .offset =       0x01f00000,
171                 .size =         MTDPART_SIZ_FULL,
172         }
173 };
174 
175 static struct physmap_flash_data trizeps4_flash_data[] = {
176         {
177                 .width          = 4,                    /* bankwidth in bytes */
178                 .parts          = trizeps4_partitions,
179                 .nr_parts       = ARRAY_SIZE(trizeps4_partitions)
180         }
181 };
182 
183 static struct resource flash_resource = {
184         .start  = PXA_CS0_PHYS,
185         .end    = PXA_CS0_PHYS + SZ_32M - 1,
186         .flags  = IORESOURCE_MEM,
187 };
188 
189 static struct platform_device flash_device = {
190         .name           = "physmap-flash",
191         .id             = 0,
192         .dev = {
193                 .platform_data = trizeps4_flash_data,
194         },
195         .resource = &flash_resource,
196         .num_resources = 1,
197 };
198 
199 /****************************************************************************
200  * DAVICOM DM9000 Ethernet
201  ****************************************************************************/
202 static struct resource dm9000_resources[] = {
203         [0] = {
204                 .start  = TRIZEPS4_ETH_PHYS+0x300,
205                 .end    = TRIZEPS4_ETH_PHYS+0x400-1,
206                 .flags  = IORESOURCE_MEM,
207         },
208         [1] = {
209                 .start  = TRIZEPS4_ETH_PHYS+0x8300,
210                 .end    = TRIZEPS4_ETH_PHYS+0x8400-1,
211                 .flags  = IORESOURCE_MEM,
212         },
213         [2] = {
214                 .start  = TRIZEPS4_ETH_IRQ,
215                 .end    = TRIZEPS4_ETH_IRQ,
216                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
217         },
218 };
219 
220 static struct dm9000_plat_data tri_dm9000_platdata = {
221         .flags          = DM9000_PLATF_32BITONLY,
222 };
223 
224 static struct platform_device dm9000_device = {
225         .name           = "dm9000",
226         .id             = -1,
227         .num_resources  = ARRAY_SIZE(dm9000_resources),
228         .resource       = dm9000_resources,
229         .dev            = {
230                 .platform_data = &tri_dm9000_platdata,
231         }
232 };
233 
234 /****************************************************************************
235  * LED's on GPIO pins of PXA
236  ****************************************************************************/
237 static struct gpio_led trizeps4_led[] = {
238 #ifdef STATUS_LEDS_ON_STUART_PINS
239         {
240                 .name = "led0:orange:heartbeat",        /* */
241                 .default_trigger = "heartbeat",
242                 .gpio = GPIO_HEARTBEAT_LED,
243                 .active_low = 1,
244         },
245         {
246                 .name = "led1:yellow:cpubusy",          /* */
247                 .default_trigger = "cpu-busy",
248                 .gpio = GPIO_SYS_BUSY_LED,
249                 .active_low = 1,
250         },
251 #endif
252 };
253 
254 static struct gpio_led_platform_data trizeps4_led_data = {
255         .leds           = trizeps4_led,
256         .num_leds       = ARRAY_SIZE(trizeps4_led),
257 };
258 
259 static struct platform_device leds_devices = {
260         .name           = "leds-gpio",
261         .id             = -1,
262         .dev            = {
263                 .platform_data  = &trizeps4_led_data,
264         },
265 };
266 
267 static struct platform_device *trizeps4_devices[] __initdata = {
268         &flash_device,
269         &dm9000_device,
270         &leds_devices,
271 };
272 
273 static struct platform_device *trizeps4wl_devices[] __initdata = {
274         &flash_device,
275         &leds_devices,
276 };
277 
278 static short trizeps_conxs_bcr;
279 
280 /* PCCARD power switching supports only 3,3V */
281 void board_pcmcia_power(int power)
282 {
283         if (power) {
284                 /* switch power on, put in reset and enable buffers */
285                 trizeps_conxs_bcr |= power;
286                 trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
287                 trizeps_conxs_bcr &= ~ConXS_BCR_CF_BUF_EN;
288                 BCR_writew(trizeps_conxs_bcr);
289                 /* wait a little */
290                 udelay(2000);
291                 /* take reset away */
292                 trizeps_conxs_bcr &= ~ConXS_BCR_CF_RESET;
293                 BCR_writew(trizeps_conxs_bcr);
294                 udelay(2000);
295         } else {
296                 /* put in reset */
297                 trizeps_conxs_bcr |= ConXS_BCR_CF_RESET;
298                 BCR_writew(trizeps_conxs_bcr);
299                 udelay(1000);
300                 /* switch power off */
301                 trizeps_conxs_bcr &= ~0xf;
302                 BCR_writew(trizeps_conxs_bcr);
303         }
304         pr_debug("%s: o%s 0x%x\n", __func__, power ? "n" : "ff",
305                         trizeps_conxs_bcr);
306 }
307 EXPORT_SYMBOL(board_pcmcia_power);
308 
309 /* backlight power switching for LCD panel */
310 static void board_backlight_power(int on)
311 {
312         if (on)
313                 trizeps_conxs_bcr |= ConXS_BCR_L_DISP;
314         else
315                 trizeps_conxs_bcr &= ~ConXS_BCR_L_DISP;
316 
317         pr_debug("%s: o%s 0x%x\n", __func__, on ? "n" : "ff",
318                         trizeps_conxs_bcr);
319         BCR_writew(trizeps_conxs_bcr);
320 }
321 
322 /* a I2C based RTC is known on CONXS board */
323 static struct i2c_board_info trizeps4_i2c_devices[] __initdata = {
324         { I2C_BOARD_INFO("rtc-pcf8593", 0x51) }
325 };
326 
327 /****************************************************************************
328  * MMC card slot external to module
329  ****************************************************************************/
330 static int trizeps4_mci_init(struct device *dev, irq_handler_t mci_detect_int,
331                 void *data)
332 {
333         int err;
334 
335         err = request_irq(TRIZEPS4_MMC_IRQ, mci_detect_int,
336                           IRQF_TRIGGER_RISING, "MMC card detect", data);
337         if (err) {
338                 printk(KERN_ERR "trizeps4_mci_init: MMC/SD: can't request"
339                                                 "MMC card detect IRQ\n");
340                 return -1;
341         }
342         return 0;
343 }
344 
345 static void trizeps4_mci_exit(struct device *dev, void *data)
346 {
347         free_irq(TRIZEPS4_MMC_IRQ, data);
348 }
349 
350 static struct pxamci_platform_data trizeps4_mci_platform_data = {
351         .ocr_mask       = MMC_VDD_32_33|MMC_VDD_33_34,
352         .detect_delay_ms= 10,
353         .init           = trizeps4_mci_init,
354         .exit           = trizeps4_mci_exit,
355         .get_ro         = NULL, /* write-protection not supported */
356         .setpower       = NULL, /* power-switching not supported */
357         .gpio_card_detect = -1,
358         .gpio_card_ro   = -1,
359         .gpio_power     = -1,
360 };
361 
362 /****************************************************************************
363  * IRDA mode switching on stuart
364  ****************************************************************************/
365 #ifndef STATUS_LEDS_ON_STUART_PINS
366 static short trizeps_conxs_ircr;
367 
368 static int trizeps4_irda_startup(struct device *dev)
369 {
370         trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
371         IRCR_writew(trizeps_conxs_ircr);
372         return 0;
373 }
374 
375 static void trizeps4_irda_shutdown(struct device *dev)
376 {
377         trizeps_conxs_ircr |= ConXS_IRCR_SD;
378         IRCR_writew(trizeps_conxs_ircr);
379 }
380 
381 static void trizeps4_irda_transceiver_mode(struct device *dev, int mode)
382 {
383         unsigned long flags;
384 
385         local_irq_save(flags);
386         /* Switch mode */
387         if (mode & IR_SIRMODE)
388                 trizeps_conxs_ircr &= ~ConXS_IRCR_MODE; /* Slow mode */
389         else if (mode & IR_FIRMODE)
390                 trizeps_conxs_ircr |= ConXS_IRCR_MODE;  /* Fast mode */
391 
392         /* Switch power */
393         if (mode & IR_OFF)
394                 trizeps_conxs_ircr |= ConXS_IRCR_SD;
395         else
396                 trizeps_conxs_ircr &= ~ConXS_IRCR_SD;
397 
398         IRCR_writew(trizeps_conxs_ircr);
399         local_irq_restore(flags);
400 
401         pxa2xx_transceiver_mode(dev, mode);
402 }
403 
404 static struct pxaficp_platform_data trizeps4_ficp_platform_data = {
405         .gpio_pwdown            = -1,
406         .transceiver_cap        = IR_SIRMODE | IR_FIRMODE | IR_OFF,
407         .transceiver_mode       = trizeps4_irda_transceiver_mode,
408         .startup                = trizeps4_irda_startup,
409         .shutdown               = trizeps4_irda_shutdown,
410 };
411 #endif
412 
413 /****************************************************************************
414  * OHCI USB port
415  ****************************************************************************/
416 static struct pxaohci_platform_data trizeps4_ohci_platform_data = {
417         .port_mode      = PMM_PERPORT_MODE,
418         .flags          = ENABLE_PORT_ALL | POWER_CONTROL_LOW | POWER_SENSE_LOW,
419 };
420 
421 static struct map_desc trizeps4_io_desc[] __initdata = {
422         {       /* ConXS CFSR */
423                 .virtual        = TRIZEPS4_CFSR_VIRT,
424                 .pfn            = __phys_to_pfn(TRIZEPS4_CFSR_PHYS),
425                 .length         = 0x00001000,
426                 .type           = MT_DEVICE
427         },
428         {       /* ConXS BCR */
429                 .virtual        = TRIZEPS4_BOCR_VIRT,
430                 .pfn            = __phys_to_pfn(TRIZEPS4_BOCR_PHYS),
431                 .length         = 0x00001000,
432                 .type           = MT_DEVICE
433         },
434         {       /* ConXS IRCR */
435                 .virtual        = TRIZEPS4_IRCR_VIRT,
436                 .pfn            = __phys_to_pfn(TRIZEPS4_IRCR_PHYS),
437                 .length         = 0x00001000,
438                 .type           = MT_DEVICE
439         },
440         {       /* ConXS DCR */
441                 .virtual        = TRIZEPS4_DICR_VIRT,
442                 .pfn            = __phys_to_pfn(TRIZEPS4_DICR_PHYS),
443                 .length         = 0x00001000,
444                 .type           = MT_DEVICE
445         },
446         {       /* ConXS UPSR */
447                 .virtual        = TRIZEPS4_UPSR_VIRT,
448                 .pfn            = __phys_to_pfn(TRIZEPS4_UPSR_PHYS),
449                 .length         = 0x00001000,
450                 .type           = MT_DEVICE
451         }
452 };
453 
454 static struct pxafb_mode_info sharp_lcd_mode = {
455         .pixclock       = 78000,
456         .xres           = 640,
457         .yres           = 480,
458         .bpp            = 8,
459         .hsync_len      = 4,
460         .left_margin    = 4,
461         .right_margin   = 4,
462         .vsync_len      = 2,
463         .upper_margin   = 0,
464         .lower_margin   = 0,
465         .sync           = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
466         .cmap_greyscale = 0,
467 };
468 
469 static struct pxafb_mach_info sharp_lcd = {
470         .modes          = &sharp_lcd_mode,
471         .num_modes      = 1,
472         .lcd_conn       = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL,
473         .cmap_inverse   = 0,
474         .cmap_static    = 0,
475         .pxafb_backlight_power = board_backlight_power,
476 };
477 
478 static struct pxafb_mode_info toshiba_lcd_mode = {
479         .pixclock       = 39720,
480         .xres           = 640,
481         .yres           = 480,
482         .bpp            = 8,
483         .hsync_len      = 63,
484         .left_margin    = 12,
485         .right_margin   = 12,
486         .vsync_len      = 4,
487         .upper_margin   = 32,
488         .lower_margin   = 10,
489         .sync           = 0,
490         .cmap_greyscale = 0,
491 };
492 
493 static struct pxafb_mach_info toshiba_lcd = {
494         .modes          = &toshiba_lcd_mode,
495         .num_modes      = 1,
496         .lcd_conn       = (LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL),
497         .cmap_inverse   = 0,
498         .cmap_static    = 0,
499         .pxafb_backlight_power = board_backlight_power,
500 };
501 
502 static void __init trizeps4_init(void)
503 {
504         pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4_pin_config));
505         if (machine_is_trizeps4wl()) {
506                 pxa2xx_mfp_config(ARRAY_AND_SIZE(trizeps4wl_pin_config));
507                 platform_add_devices(trizeps4wl_devices,
508                                         ARRAY_SIZE(trizeps4wl_devices));
509         } else {
510                 platform_add_devices(trizeps4_devices,
511                                         ARRAY_SIZE(trizeps4_devices));
512         }
513 
514         pxa_set_ffuart_info(NULL);
515         pxa_set_btuart_info(NULL);
516         pxa_set_stuart_info(NULL);
517 
518         if (0)  /* dont know how to determine LCD */
519                 pxa_set_fb_info(NULL, &sharp_lcd);
520         else
521                 pxa_set_fb_info(NULL, &toshiba_lcd);
522 
523         pxa_set_mci_info(&trizeps4_mci_platform_data);
524 #ifndef STATUS_LEDS_ON_STUART_PINS
525         pxa_set_ficp_info(&trizeps4_ficp_platform_data);
526 #endif
527         pxa_set_ohci_info(&trizeps4_ohci_platform_data);
528         pxa_set_ac97_info(NULL);
529         pxa_set_i2c_info(NULL);
530         i2c_register_board_info(0, trizeps4_i2c_devices,
531                                         ARRAY_SIZE(trizeps4_i2c_devices));
532 
533         /* this is the reset value */
534         trizeps_conxs_bcr = 0x00A0;
535 
536         BCR_writew(trizeps_conxs_bcr);
537         board_backlight_power(1);
538 
539         regulator_has_full_constraints();
540 }
541 
542 static void __init trizeps4_map_io(void)
543 {
544         pxa27x_map_io();
545         iotable_init(trizeps4_io_desc, ARRAY_SIZE(trizeps4_io_desc));
546 
547         if ((__raw_readl(MSC0) & 0x8) && (__raw_readl(BOOT_DEF) & 0x1)) {
548                 /* if flash is 16 bit wide its a Trizeps4 WL */
549                 __machine_arch_type = MACH_TYPE_TRIZEPS4WL;
550                 trizeps4_flash_data[0].width = 2;
551         } else {
552                 /* if flash is 32 bit wide its a Trizeps4 */
553                 __machine_arch_type = MACH_TYPE_TRIZEPS4;
554                 trizeps4_flash_data[0].width = 4;
555         }
556 }
557 
558 MACHINE_START(TRIZEPS4, "Keith und Koep Trizeps IV module")
559         /* MAINTAINER("Jürgen Schindele") */
560         .atag_offset    = 0x100,
561         .init_machine   = trizeps4_init,
562         .map_io         = trizeps4_map_io,
563         .nr_irqs        = PXA_NR_IRQS,
564         .init_irq       = pxa27x_init_irq,
565         .handle_irq     = pxa27x_handle_irq,
566         .init_time      = pxa_timer_init,
567         .restart        = pxa_restart,
568 MACHINE_END
569 
570 MACHINE_START(TRIZEPS4WL, "Keith und Koep Trizeps IV-WL module")
571         /* MAINTAINER("Jürgen Schindele") */
572         .atag_offset    = 0x100,
573         .init_machine   = trizeps4_init,
574         .map_io         = trizeps4_map_io,
575         .nr_irqs        = PXA_NR_IRQS,
576         .init_irq       = pxa27x_init_irq,
577         .handle_irq     = pxa27x_handle_irq,
578         .init_time      = pxa_timer_init,
579         .restart        = pxa_restart,
580 MACHINE_END
581 

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