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/lubbock.h>
45 #include <asm/arch/udc.h>
46 #include <asm/arch/irda.h>
47 #include <asm/arch/pxafb.h>
48 #include <asm/arch/mmc.h>
54 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
56 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
60 local_irq_save(flags);
61 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
62 local_irq_restore(flags);
64 EXPORT_SYMBOL(lubbock_set_misc_wr);
66 static unsigned long lubbock_irq_enabled;
68 static void lubbock_mask_irq(unsigned int irq)
70 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
71 LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
74 static void lubbock_unmask_irq(unsigned int irq)
76 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
77 /* the irq can be acknowledged only if deasserted, so it's done here */
78 LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
79 LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
82 static struct irq_chip lubbock_irq_chip = {
84 .ack = lubbock_mask_irq,
85 .mask = lubbock_mask_irq,
86 .unmask = lubbock_unmask_irq,
89 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
91 unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
93 GEDR(0) = GPIO_bit(0); /* clear our parent irq */
94 if (likely(pending)) {
95 irq = LUBBOCK_IRQ(0) + __ffs(pending);
96 desc = irq_desc + irq;
97 desc_handle_irq(irq, desc);
99 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
103 static void __init lubbock_init_irq(void)
109 /* setup extra lubbock irqs */
110 for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
111 set_irq_chip(irq, &lubbock_irq_chip);
112 set_irq_handler(irq, handle_level_irq);
113 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
116 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
117 set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
122 static int lubbock_irq_resume(struct sys_device *dev)
124 LUB_IRQ_MASK_EN = lubbock_irq_enabled;
128 static struct sysdev_class lubbock_irq_sysclass = {
130 .resume = lubbock_irq_resume,
133 static struct sys_device lubbock_irq_device = {
134 .cls = &lubbock_irq_sysclass,
137 static int __init lubbock_irq_device_init(void)
141 if (machine_is_lubbock()) {
142 ret = sysdev_class_register(&lubbock_irq_sysclass);
144 ret = sysdev_register(&lubbock_irq_device);
149 device_initcall(lubbock_irq_device_init);
153 static int lubbock_udc_is_connected(void)
155 return (LUB_MISC_RD & (1 << 9)) == 0;
158 static struct pxa2xx_udc_mach_info udc_info __initdata = {
159 .udc_is_connected = lubbock_udc_is_connected,
160 // no D+ pullup; lubbock can't connect/disconnect in software
163 static struct platform_device lub_audio_device = {
164 .name = "pxa2xx-ac97",
168 static struct resource sa1111_resources[] = {
172 .flags = IORESOURCE_MEM,
175 .start = LUBBOCK_SA1111_IRQ,
176 .end = LUBBOCK_SA1111_IRQ,
177 .flags = IORESOURCE_IRQ,
181 static struct platform_device sa1111_device = {
184 .num_resources = ARRAY_SIZE(sa1111_resources),
185 .resource = sa1111_resources,
188 static struct resource smc91x_resources[] = {
190 .name = "smc91x-regs",
193 .flags = IORESOURCE_MEM,
196 .start = LUBBOCK_ETH_IRQ,
197 .end = LUBBOCK_ETH_IRQ,
198 .flags = IORESOURCE_IRQ,
201 .name = "smc91x-attrib",
204 .flags = IORESOURCE_MEM,
208 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
209 * you can select it to replace the ucb1400 by switching the touchscreen cable
210 * (to J5) and poking board registers (as done below). Else it's only useful
211 * for the temperature sensors.
213 static struct pxa2xx_spi_master pxa_ssp_master_info = {
217 static struct platform_device pxa_ssp = {
218 .name = "pxa2xx-spi",
221 .platform_data = &pxa_ssp_master_info,
225 static int lubbock_ads7846_pendown_state(void)
227 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
231 static struct ads7846_platform_data ads_info = {
233 .vref_delay_usecs = 100, /* internal, no cap */
234 .get_pendown_state = lubbock_ads7846_pendown_state,
235 // .x_plate_ohms = 500, /* GUESS! */
236 // .y_plate_ohms = 500, /* GUESS! */
239 static void ads7846_cs(u32 command)
241 static const unsigned TS_nCS = 1 << 11;
242 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
245 static struct pxa2xx_spi_chip ads_hw = {
248 .cs_control = ads7846_cs,
251 static struct spi_board_info spi_board_info[] __initdata = { {
252 .modalias = "ads7846",
253 .platform_data = &ads_info,
254 .controller_data = &ads_hw,
255 .irq = LUBBOCK_BB_IRQ,
256 .max_speed_hz = 120000 /* max sample rate at 3V */
257 * 26 /* command + data + overhead */,
263 static struct platform_device smc91x_device = {
266 .num_resources = ARRAY_SIZE(smc91x_resources),
267 .resource = smc91x_resources,
270 static struct resource flash_resources[] = {
274 .flags = IORESOURCE_MEM,
278 .end = 0x04000000 + SZ_64M - 1,
279 .flags = IORESOURCE_MEM,
283 static struct mtd_partition lubbock_partitions[] = {
285 .name = "Bootloader",
288 .mask_flags = MTD_WRITEABLE /* force read-only */
292 .offset = 0x00040000,
294 .name = "Filesystem",
295 .size = MTDPART_SIZ_FULL,
300 static struct flash_platform_data lubbock_flash_data[2] = {
302 .map_name = "cfi_probe",
303 .parts = lubbock_partitions,
304 .nr_parts = ARRAY_SIZE(lubbock_partitions),
306 .map_name = "cfi_probe",
312 static struct platform_device lubbock_flash_device[2] = {
314 .name = "pxa2xx-flash",
317 .platform_data = &lubbock_flash_data[0],
319 .resource = &flash_resources[0],
323 .name = "pxa2xx-flash",
326 .platform_data = &lubbock_flash_data[1],
328 .resource = &flash_resources[1],
333 static struct platform_device *devices[] __initdata = {
337 &lubbock_flash_device[0],
338 &lubbock_flash_device[1],
342 static struct pxafb_mode_info sharp_lm8v31_mode = {
353 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
357 static struct pxafb_mach_info sharp_lm8v31 = {
358 .modes = &sharp_lm8v31_mode,
363 .lccr3 = LCCR3_PCP | LCCR3_Acb(255),
366 #define MMC_POLL_RATE msecs_to_jiffies(1000)
368 static void lubbock_mmc_poll(unsigned long);
369 static irq_handler_t mmc_detect_int;
371 static struct timer_list mmc_timer = {
372 .function = lubbock_mmc_poll,
375 static void lubbock_mmc_poll(unsigned long data)
379 /* clear any previous irq state, then ... */
380 local_irq_save(flags);
381 LUB_IRQ_SET_CLR &= ~(1 << 0);
382 local_irq_restore(flags);
384 /* poll until mmc/sd card is removed */
385 if (LUB_IRQ_SET_CLR & (1 << 0))
386 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
388 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
389 enable_irq(LUBBOCK_SD_IRQ);
393 static irqreturn_t lubbock_detect_int(int irq, void *data)
395 /* IRQ is level triggered; disable, and poll for removal */
397 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
399 return mmc_detect_int(irq, data);
402 static int lubbock_mci_init(struct device *dev,
403 irq_handler_t detect_int,
406 /* setup GPIO for PXA25x MMC controller */
407 pxa_gpio_mode(GPIO6_MMCCLK_MD);
408 pxa_gpio_mode(GPIO8_MMCCS0_MD);
410 /* detect card insert/eject */
411 mmc_detect_int = detect_int;
412 init_timer(&mmc_timer);
413 mmc_timer.data = (unsigned long) data;
414 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
415 IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
418 static int lubbock_mci_get_ro(struct device *dev)
420 return (LUB_MISC_RD & (1 << 2)) != 0;
423 static void lubbock_mci_exit(struct device *dev, void *data)
425 free_irq(LUBBOCK_SD_IRQ, data);
426 del_timer_sync(&mmc_timer);
429 static struct pxamci_platform_data lubbock_mci_platform_data = {
430 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
432 .init = lubbock_mci_init,
433 .get_ro = lubbock_mci_get_ro,
434 .exit = lubbock_mci_exit,
437 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
441 local_irq_save(flags);
442 if (mode & IR_SIRMODE) {
443 LUB_MISC_WR &= ~(1 << 4);
444 } else if (mode & IR_FIRMODE) {
445 LUB_MISC_WR |= 1 << 4;
447 local_irq_restore(flags);
450 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
451 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
452 .transceiver_mode = lubbock_irda_transceiver_mode,
455 static void __init lubbock_init(void)
457 int flashboot = (LUB_CONF_SWITCHES & 1);
459 pxa_set_udc_info(&udc_info);
460 set_pxa_fb_info(&sharp_lm8v31);
461 pxa_set_mci_info(&lubbock_mci_platform_data);
462 pxa_set_ficp_info(&lubbock_ficp_platform_data);
464 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
465 (BOOT_DEF & 1) ? 2 : 4;
466 /* Compensate for the nROMBT switch which swaps the flash banks */
467 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
468 flashboot?"Flash":"ROM", flashboot);
470 lubbock_flash_data[flashboot^1].name = "application-flash";
471 lubbock_flash_data[flashboot].name = "boot-rom";
472 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
474 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
477 static struct map_desc lubbock_io_desc[] __initdata = {
479 .virtual = LUBBOCK_FPGA_VIRT,
480 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
481 .length = 0x00100000,
486 static void __init lubbock_map_io(void)
489 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
492 pxa_gpio_mode(GPIO23_SCLK_MD);
493 pxa_gpio_mode(GPIO25_STXD_MD);
494 pxa_gpio_mode(GPIO26_SRXD_MD);
496 /* This enables the BTUART */
497 pxa_gpio_mode(GPIO42_BTRXD_MD);
498 pxa_gpio_mode(GPIO43_BTTXD_MD);
499 pxa_gpio_mode(GPIO44_BTCTS_MD);
500 pxa_gpio_mode(GPIO45_BTRTS_MD);
503 GPIO_bit(GPIO48_nPOE) |
504 GPIO_bit(GPIO49_nPWE) |
505 GPIO_bit(GPIO50_nPIOR) |
506 GPIO_bit(GPIO51_nPIOW) |
507 GPIO_bit(GPIO52_nPCE_1) |
508 GPIO_bit(GPIO53_nPCE_2);
510 pxa_gpio_mode(GPIO48_nPOE_MD);
511 pxa_gpio_mode(GPIO49_nPWE_MD);
512 pxa_gpio_mode(GPIO50_nPIOR_MD);
513 pxa_gpio_mode(GPIO51_nPIOW_MD);
514 pxa_gpio_mode(GPIO52_nPCE_1_MD);
515 pxa_gpio_mode(GPIO53_nPCE_2_MD);
516 pxa_gpio_mode(GPIO54_pSKTSEL_MD);
517 pxa_gpio_mode(GPIO55_nPREG_MD);
518 pxa_gpio_mode(GPIO56_nPWAIT_MD);
519 pxa_gpio_mode(GPIO57_nIOIS16_MD);
521 /* This is for the SMC chip select */
522 pxa_gpio_mode(GPIO79_nCS_3_MD);
524 /* setup sleep mode values */
534 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
535 /* Maintainer: MontaVista Software Inc. */
536 .phys_io = 0x40000000,
537 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
538 .map_io = lubbock_map_io,
539 .init_irq = lubbock_init_irq,
541 .init_machine = lubbock_init,