2 * linux/arch/arm/mach-pxa/lubbock.c
4 * Support for the Intel DBPXA250 Development Platform.
6 * Author: Nicolas Pitre
7 * Created: Jun 15, 2001
8 * Copyright: MontaVista Software Inc.
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.
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/sysdev.h>
19 #include <linux/major.h>
21 #include <linux/interrupt.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
25 #include <linux/spi/spi.h>
26 #include <linux/spi/ads7846.h>
27 #include <asm/arch/pxa2xx_spi.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/hardware/sa1111.h>
43 #include <asm/arch/pxa-regs.h>
44 #include <asm/arch/pxa2xx-regs.h>
45 #include <asm/arch/pxa2xx-gpio.h>
46 #include <asm/arch/lubbock.h>
47 #include <asm/arch/udc.h>
48 #include <asm/arch/irda.h>
49 #include <asm/arch/pxafb.h>
50 #include <asm/arch/mmc.h>
56 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
58 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
62 local_irq_save(flags);
63 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
64 local_irq_restore(flags);
66 EXPORT_SYMBOL(lubbock_set_misc_wr);
68 static unsigned long lubbock_irq_enabled;
70 static void lubbock_mask_irq(unsigned int irq)
72 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
73 LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
76 static void lubbock_unmask_irq(unsigned int irq)
78 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
79 /* the irq can be acknowledged only if deasserted, so it's done here */
80 LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
81 LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
84 static struct irq_chip lubbock_irq_chip = {
86 .ack = lubbock_mask_irq,
87 .mask = lubbock_mask_irq,
88 .unmask = lubbock_unmask_irq,
91 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
93 unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
95 GEDR(0) = GPIO_bit(0); /* clear our parent irq */
96 if (likely(pending)) {
97 irq = LUBBOCK_IRQ(0) + __ffs(pending);
98 desc = irq_desc + irq;
99 desc_handle_irq(irq, desc);
101 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
105 static void __init lubbock_init_irq(void)
111 /* setup extra lubbock irqs */
112 for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
113 set_irq_chip(irq, &lubbock_irq_chip);
114 set_irq_handler(irq, handle_level_irq);
115 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
118 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
119 set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
124 static int lubbock_irq_resume(struct sys_device *dev)
126 LUB_IRQ_MASK_EN = lubbock_irq_enabled;
130 static struct sysdev_class lubbock_irq_sysclass = {
132 .resume = lubbock_irq_resume,
135 static struct sys_device lubbock_irq_device = {
136 .cls = &lubbock_irq_sysclass,
139 static int __init lubbock_irq_device_init(void)
143 if (machine_is_lubbock()) {
144 ret = sysdev_class_register(&lubbock_irq_sysclass);
146 ret = sysdev_register(&lubbock_irq_device);
151 device_initcall(lubbock_irq_device_init);
155 static int lubbock_udc_is_connected(void)
157 return (LUB_MISC_RD & (1 << 9)) == 0;
160 static struct pxa2xx_udc_mach_info udc_info __initdata = {
161 .udc_is_connected = lubbock_udc_is_connected,
162 // no D+ pullup; lubbock can't connect/disconnect in software
165 static struct platform_device lub_audio_device = {
166 .name = "pxa2xx-ac97",
170 static struct resource sa1111_resources[] = {
174 .flags = IORESOURCE_MEM,
177 .start = LUBBOCK_SA1111_IRQ,
178 .end = LUBBOCK_SA1111_IRQ,
179 .flags = IORESOURCE_IRQ,
183 static struct platform_device sa1111_device = {
186 .num_resources = ARRAY_SIZE(sa1111_resources),
187 .resource = sa1111_resources,
190 static struct resource smc91x_resources[] = {
192 .name = "smc91x-regs",
195 .flags = IORESOURCE_MEM,
198 .start = LUBBOCK_ETH_IRQ,
199 .end = LUBBOCK_ETH_IRQ,
200 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
203 .name = "smc91x-attrib",
206 .flags = IORESOURCE_MEM,
210 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
211 * you can select it to replace the ucb1400 by switching the touchscreen cable
212 * (to J5) and poking board registers (as done below). Else it's only useful
213 * for the temperature sensors.
215 static struct pxa2xx_spi_master pxa_ssp_master_info = {
219 static struct platform_device pxa_ssp = {
220 .name = "pxa2xx-spi",
223 .platform_data = &pxa_ssp_master_info,
227 static int lubbock_ads7846_pendown_state(void)
229 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
233 static struct ads7846_platform_data ads_info = {
235 .vref_delay_usecs = 100, /* internal, no cap */
236 .get_pendown_state = lubbock_ads7846_pendown_state,
237 // .x_plate_ohms = 500, /* GUESS! */
238 // .y_plate_ohms = 500, /* GUESS! */
241 static void ads7846_cs(u32 command)
243 static const unsigned TS_nCS = 1 << 11;
244 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
247 static struct pxa2xx_spi_chip ads_hw = {
250 .cs_control = ads7846_cs,
253 static struct spi_board_info spi_board_info[] __initdata = { {
254 .modalias = "ads7846",
255 .platform_data = &ads_info,
256 .controller_data = &ads_hw,
257 .irq = LUBBOCK_BB_IRQ,
258 .max_speed_hz = 120000 /* max sample rate at 3V */
259 * 26 /* command + data + overhead */,
265 static struct platform_device smc91x_device = {
268 .num_resources = ARRAY_SIZE(smc91x_resources),
269 .resource = smc91x_resources,
272 static struct resource flash_resources[] = {
276 .flags = IORESOURCE_MEM,
280 .end = 0x04000000 + SZ_64M - 1,
281 .flags = IORESOURCE_MEM,
285 static struct mtd_partition lubbock_partitions[] = {
287 .name = "Bootloader",
290 .mask_flags = MTD_WRITEABLE /* force read-only */
294 .offset = 0x00040000,
296 .name = "Filesystem",
297 .size = MTDPART_SIZ_FULL,
302 static struct flash_platform_data lubbock_flash_data[2] = {
304 .map_name = "cfi_probe",
305 .parts = lubbock_partitions,
306 .nr_parts = ARRAY_SIZE(lubbock_partitions),
308 .map_name = "cfi_probe",
314 static struct platform_device lubbock_flash_device[2] = {
316 .name = "pxa2xx-flash",
319 .platform_data = &lubbock_flash_data[0],
321 .resource = &flash_resources[0],
325 .name = "pxa2xx-flash",
328 .platform_data = &lubbock_flash_data[1],
330 .resource = &flash_resources[1],
335 static struct platform_device *devices[] __initdata = {
339 &lubbock_flash_device[0],
340 &lubbock_flash_device[1],
344 static struct pxafb_mode_info sharp_lm8v31_mode = {
355 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
359 static struct pxafb_mach_info sharp_lm8v31 = {
360 .modes = &sharp_lm8v31_mode,
365 .lccr3 = LCCR3_PCP | LCCR3_Acb(255),
368 #define MMC_POLL_RATE msecs_to_jiffies(1000)
370 static void lubbock_mmc_poll(unsigned long);
371 static irq_handler_t mmc_detect_int;
373 static struct timer_list mmc_timer = {
374 .function = lubbock_mmc_poll,
377 static void lubbock_mmc_poll(unsigned long data)
381 /* clear any previous irq state, then ... */
382 local_irq_save(flags);
383 LUB_IRQ_SET_CLR &= ~(1 << 0);
384 local_irq_restore(flags);
386 /* poll until mmc/sd card is removed */
387 if (LUB_IRQ_SET_CLR & (1 << 0))
388 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
390 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
391 enable_irq(LUBBOCK_SD_IRQ);
395 static irqreturn_t lubbock_detect_int(int irq, void *data)
397 /* IRQ is level triggered; disable, and poll for removal */
399 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
401 return mmc_detect_int(irq, data);
404 static int lubbock_mci_init(struct device *dev,
405 irq_handler_t detect_int,
408 /* setup GPIO for PXA25x MMC controller */
409 pxa_gpio_mode(GPIO6_MMCCLK_MD);
410 pxa_gpio_mode(GPIO8_MMCCS0_MD);
412 /* detect card insert/eject */
413 mmc_detect_int = detect_int;
414 init_timer(&mmc_timer);
415 mmc_timer.data = (unsigned long) data;
416 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
417 IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
420 static int lubbock_mci_get_ro(struct device *dev)
422 return (LUB_MISC_RD & (1 << 2)) != 0;
425 static void lubbock_mci_exit(struct device *dev, void *data)
427 free_irq(LUBBOCK_SD_IRQ, data);
428 del_timer_sync(&mmc_timer);
431 static struct pxamci_platform_data lubbock_mci_platform_data = {
432 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
434 .init = lubbock_mci_init,
435 .get_ro = lubbock_mci_get_ro,
436 .exit = lubbock_mci_exit,
439 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
443 local_irq_save(flags);
444 if (mode & IR_SIRMODE) {
445 LUB_MISC_WR &= ~(1 << 4);
446 } else if (mode & IR_FIRMODE) {
447 LUB_MISC_WR |= 1 << 4;
449 local_irq_restore(flags);
452 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
453 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
454 .transceiver_mode = lubbock_irda_transceiver_mode,
457 static void __init lubbock_init(void)
459 int flashboot = (LUB_CONF_SWITCHES & 1);
461 pxa_set_udc_info(&udc_info);
462 set_pxa_fb_info(&sharp_lm8v31);
463 pxa_set_mci_info(&lubbock_mci_platform_data);
464 pxa_set_ficp_info(&lubbock_ficp_platform_data);
466 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
467 (BOOT_DEF & 1) ? 2 : 4;
468 /* Compensate for the nROMBT switch which swaps the flash banks */
469 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
470 flashboot?"Flash":"ROM", flashboot);
472 lubbock_flash_data[flashboot^1].name = "application-flash";
473 lubbock_flash_data[flashboot].name = "boot-rom";
474 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
476 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
479 static struct map_desc lubbock_io_desc[] __initdata = {
481 .virtual = LUBBOCK_FPGA_VIRT,
482 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
483 .length = 0x00100000,
488 static void __init lubbock_map_io(void)
491 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
494 pxa_gpio_mode(GPIO23_SCLK_MD);
495 pxa_gpio_mode(GPIO25_STXD_MD);
496 pxa_gpio_mode(GPIO26_SRXD_MD);
498 /* This enables the BTUART */
499 pxa_gpio_mode(GPIO42_BTRXD_MD);
500 pxa_gpio_mode(GPIO43_BTTXD_MD);
501 pxa_gpio_mode(GPIO44_BTCTS_MD);
502 pxa_gpio_mode(GPIO45_BTRTS_MD);
505 GPIO_bit(GPIO48_nPOE) |
506 GPIO_bit(GPIO49_nPWE) |
507 GPIO_bit(GPIO50_nPIOR) |
508 GPIO_bit(GPIO51_nPIOW) |
509 GPIO_bit(GPIO52_nPCE_1) |
510 GPIO_bit(GPIO53_nPCE_2);
512 pxa_gpio_mode(GPIO48_nPOE_MD);
513 pxa_gpio_mode(GPIO49_nPWE_MD);
514 pxa_gpio_mode(GPIO50_nPIOR_MD);
515 pxa_gpio_mode(GPIO51_nPIOW_MD);
516 pxa_gpio_mode(GPIO52_nPCE_1_MD);
517 pxa_gpio_mode(GPIO53_nPCE_2_MD);
518 pxa_gpio_mode(GPIO54_pSKTSEL_MD);
519 pxa_gpio_mode(GPIO55_nPREG_MD);
520 pxa_gpio_mode(GPIO56_nPWAIT_MD);
521 pxa_gpio_mode(GPIO57_nIOIS16_MD);
523 /* This is for the SMC chip select */
524 pxa_gpio_mode(GPIO79_nCS_3_MD);
526 /* setup sleep mode values */
536 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
537 /* Maintainer: MontaVista Software Inc. */
538 .phys_io = 0x40000000,
539 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
540 .map_io = lubbock_map_io,
541 .init_irq = lubbock_init_irq,
543 .init_machine = lubbock_init,