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/mfp-pxa25x.h>
46 #include <asm/arch/audio.h>
47 #include <asm/arch/lubbock.h>
48 #include <asm/arch/udc.h>
49 #include <asm/arch/irda.h>
50 #include <asm/arch/pxafb.h>
51 #include <asm/arch/mmc.h>
56 static unsigned long lubbock_pin_config[] __initdata = {
57 GPIO15_nCS_1, /* CS1 - Flash */
58 GPIO79_nCS_3, /* CS3 - SMC ethernet */
88 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
91 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
93 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
97 local_irq_save(flags);
98 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
99 local_irq_restore(flags);
101 EXPORT_SYMBOL(lubbock_set_misc_wr);
103 static unsigned long lubbock_irq_enabled;
105 static void lubbock_mask_irq(unsigned int irq)
107 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
108 LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
111 static void lubbock_unmask_irq(unsigned int irq)
113 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
114 /* the irq can be acknowledged only if deasserted, so it's done here */
115 LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
116 LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
119 static struct irq_chip lubbock_irq_chip = {
121 .ack = lubbock_mask_irq,
122 .mask = lubbock_mask_irq,
123 .unmask = lubbock_unmask_irq,
126 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
128 unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
130 GEDR(0) = GPIO_bit(0); /* clear our parent irq */
131 if (likely(pending)) {
132 irq = LUBBOCK_IRQ(0) + __ffs(pending);
133 desc = irq_desc + irq;
134 desc_handle_irq(irq, desc);
136 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
140 static void __init lubbock_init_irq(void)
146 /* setup extra lubbock irqs */
147 for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
148 set_irq_chip(irq, &lubbock_irq_chip);
149 set_irq_handler(irq, handle_level_irq);
150 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
153 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
154 set_irq_type(IRQ_GPIO(0), IRQT_FALLING);
159 static int lubbock_irq_resume(struct sys_device *dev)
161 LUB_IRQ_MASK_EN = lubbock_irq_enabled;
165 static struct sysdev_class lubbock_irq_sysclass = {
167 .resume = lubbock_irq_resume,
170 static struct sys_device lubbock_irq_device = {
171 .cls = &lubbock_irq_sysclass,
174 static int __init lubbock_irq_device_init(void)
178 if (machine_is_lubbock()) {
179 ret = sysdev_class_register(&lubbock_irq_sysclass);
181 ret = sysdev_register(&lubbock_irq_device);
186 device_initcall(lubbock_irq_device_init);
190 static int lubbock_udc_is_connected(void)
192 return (LUB_MISC_RD & (1 << 9)) == 0;
195 static struct pxa2xx_udc_mach_info udc_info __initdata = {
196 .udc_is_connected = lubbock_udc_is_connected,
197 // no D+ pullup; lubbock can't connect/disconnect in software
200 static struct resource sa1111_resources[] = {
204 .flags = IORESOURCE_MEM,
207 .start = LUBBOCK_SA1111_IRQ,
208 .end = LUBBOCK_SA1111_IRQ,
209 .flags = IORESOURCE_IRQ,
213 static struct platform_device sa1111_device = {
216 .num_resources = ARRAY_SIZE(sa1111_resources),
217 .resource = sa1111_resources,
220 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
221 * you can select it to replace the ucb1400 by switching the touchscreen cable
222 * (to J5) and poking board registers (as done below). Else it's only useful
223 * for the temperature sensors.
225 static struct pxa2xx_spi_master pxa_ssp_master_info = {
229 static int lubbock_ads7846_pendown_state(void)
231 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
235 static struct ads7846_platform_data ads_info = {
237 .vref_delay_usecs = 100, /* internal, no cap */
238 .get_pendown_state = lubbock_ads7846_pendown_state,
239 // .x_plate_ohms = 500, /* GUESS! */
240 // .y_plate_ohms = 500, /* GUESS! */
243 static void ads7846_cs(u32 command)
245 static const unsigned TS_nCS = 1 << 11;
246 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
249 static struct pxa2xx_spi_chip ads_hw = {
252 .cs_control = ads7846_cs,
255 static struct spi_board_info spi_board_info[] __initdata = { {
256 .modalias = "ads7846",
257 .platform_data = &ads_info,
258 .controller_data = &ads_hw,
259 .irq = LUBBOCK_BB_IRQ,
260 .max_speed_hz = 120000 /* max sample rate at 3V */
261 * 26 /* command + data + overhead */,
267 static struct resource smc91x_resources[] = {
269 .name = "smc91x-regs",
272 .flags = IORESOURCE_MEM,
275 .start = LUBBOCK_ETH_IRQ,
276 .end = LUBBOCK_ETH_IRQ,
277 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
280 .name = "smc91x-attrib",
283 .flags = IORESOURCE_MEM,
287 static struct platform_device smc91x_device = {
290 .num_resources = ARRAY_SIZE(smc91x_resources),
291 .resource = smc91x_resources,
294 static struct resource flash_resources[] = {
298 .flags = IORESOURCE_MEM,
302 .end = 0x04000000 + SZ_64M - 1,
303 .flags = IORESOURCE_MEM,
307 static struct mtd_partition lubbock_partitions[] = {
309 .name = "Bootloader",
312 .mask_flags = MTD_WRITEABLE /* force read-only */
316 .offset = 0x00040000,
318 .name = "Filesystem",
319 .size = MTDPART_SIZ_FULL,
324 static struct flash_platform_data lubbock_flash_data[2] = {
326 .map_name = "cfi_probe",
327 .parts = lubbock_partitions,
328 .nr_parts = ARRAY_SIZE(lubbock_partitions),
330 .map_name = "cfi_probe",
336 static struct platform_device lubbock_flash_device[2] = {
338 .name = "pxa2xx-flash",
341 .platform_data = &lubbock_flash_data[0],
343 .resource = &flash_resources[0],
347 .name = "pxa2xx-flash",
350 .platform_data = &lubbock_flash_data[1],
352 .resource = &flash_resources[1],
357 static struct platform_device *devices[] __initdata = {
360 &lubbock_flash_device[0],
361 &lubbock_flash_device[1],
364 static struct pxafb_mode_info sharp_lm8v31_mode = {
375 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
379 static struct pxafb_mach_info sharp_lm8v31 = {
380 .modes = &sharp_lm8v31_mode,
384 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
385 LCD_AC_BIAS_FREQ(255),
388 #define MMC_POLL_RATE msecs_to_jiffies(1000)
390 static void lubbock_mmc_poll(unsigned long);
391 static irq_handler_t mmc_detect_int;
393 static struct timer_list mmc_timer = {
394 .function = lubbock_mmc_poll,
397 static void lubbock_mmc_poll(unsigned long data)
401 /* clear any previous irq state, then ... */
402 local_irq_save(flags);
403 LUB_IRQ_SET_CLR &= ~(1 << 0);
404 local_irq_restore(flags);
406 /* poll until mmc/sd card is removed */
407 if (LUB_IRQ_SET_CLR & (1 << 0))
408 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
410 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
411 enable_irq(LUBBOCK_SD_IRQ);
415 static irqreturn_t lubbock_detect_int(int irq, void *data)
417 /* IRQ is level triggered; disable, and poll for removal */
419 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
421 return mmc_detect_int(irq, data);
424 static int lubbock_mci_init(struct device *dev,
425 irq_handler_t detect_int,
428 /* detect card insert/eject */
429 mmc_detect_int = detect_int;
430 init_timer(&mmc_timer);
431 mmc_timer.data = (unsigned long) data;
432 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
433 IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
436 static int lubbock_mci_get_ro(struct device *dev)
438 return (LUB_MISC_RD & (1 << 2)) != 0;
441 static void lubbock_mci_exit(struct device *dev, void *data)
443 free_irq(LUBBOCK_SD_IRQ, data);
444 del_timer_sync(&mmc_timer);
447 static struct pxamci_platform_data lubbock_mci_platform_data = {
448 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
450 .init = lubbock_mci_init,
451 .get_ro = lubbock_mci_get_ro,
452 .exit = lubbock_mci_exit,
455 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
459 local_irq_save(flags);
460 if (mode & IR_SIRMODE) {
461 LUB_MISC_WR &= ~(1 << 4);
462 } else if (mode & IR_FIRMODE) {
463 LUB_MISC_WR |= 1 << 4;
465 pxa2xx_transceiver_mode(dev, mode);
466 local_irq_restore(flags);
469 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
470 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
471 .transceiver_mode = lubbock_irda_transceiver_mode,
474 static void __init lubbock_init(void)
476 int flashboot = (LUB_CONF_SWITCHES & 1);
478 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
480 pxa_set_udc_info(&udc_info);
481 set_pxa_fb_info(&sharp_lm8v31);
482 pxa_set_mci_info(&lubbock_mci_platform_data);
483 pxa_set_ficp_info(&lubbock_ficp_platform_data);
484 pxa_set_ac97_info(NULL);
486 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
487 (BOOT_DEF & 1) ? 2 : 4;
488 /* Compensate for the nROMBT switch which swaps the flash banks */
489 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
490 flashboot?"Flash":"ROM", flashboot);
492 lubbock_flash_data[flashboot^1].name = "application-flash";
493 lubbock_flash_data[flashboot].name = "boot-rom";
494 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
496 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
497 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
500 static struct map_desc lubbock_io_desc[] __initdata = {
502 .virtual = LUBBOCK_FPGA_VIRT,
503 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
504 .length = 0x00100000,
509 static void __init lubbock_map_io(void)
512 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
517 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
518 /* Maintainer: MontaVista Software Inc. */
519 .phys_io = 0x40000000,
520 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
521 .map_io = lubbock_map_io,
522 .init_irq = lubbock_init_irq,
524 .init_machine = lubbock_init,