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>
24 #include <linux/smc91x.h>
26 #include <linux/spi/spi.h>
27 #include <linux/spi/ads7846.h>
28 #include <mach/pxa2xx_spi.h>
30 #include <asm/setup.h>
31 #include <asm/memory.h>
32 #include <asm/mach-types.h>
33 #include <mach/hardware.h>
35 #include <asm/sizes.h>
37 #include <asm/mach/arch.h>
38 #include <asm/mach/map.h>
39 #include <asm/mach/irq.h>
40 #include <asm/mach/flash.h>
42 #include <asm/hardware/sa1111.h>
44 #include <mach/pxa-regs.h>
45 #include <mach/pxa2xx-regs.h>
46 #include <mach/mfp-pxa25x.h>
47 #include <mach/audio.h>
48 #include <mach/lubbock.h>
50 #include <mach/irda.h>
51 #include <mach/pxafb.h>
58 static unsigned long lubbock_pin_config[] __initdata = {
59 GPIO15_nCS_1, /* CS1 - Flash */
60 GPIO79_nCS_3, /* CS3 - SMC ethernet */
90 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
93 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
95 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
99 local_irq_save(flags);
100 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
101 local_irq_restore(flags);
103 EXPORT_SYMBOL(lubbock_set_misc_wr);
105 static unsigned long lubbock_irq_enabled;
107 static void lubbock_mask_irq(unsigned int irq)
109 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
110 LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
113 static void lubbock_unmask_irq(unsigned int irq)
115 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
116 /* the irq can be acknowledged only if deasserted, so it's done here */
117 LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
118 LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
121 static struct irq_chip lubbock_irq_chip = {
123 .ack = lubbock_mask_irq,
124 .mask = lubbock_mask_irq,
125 .unmask = lubbock_unmask_irq,
128 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
130 unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
132 GEDR(0) = GPIO_bit(0); /* clear our parent irq */
133 if (likely(pending)) {
134 irq = LUBBOCK_IRQ(0) + __ffs(pending);
135 desc = irq_desc + irq;
136 desc_handle_irq(irq, desc);
138 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
142 static void __init lubbock_init_irq(void)
148 /* setup extra lubbock irqs */
149 for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
150 set_irq_chip(irq, &lubbock_irq_chip);
151 set_irq_handler(irq, handle_level_irq);
152 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
155 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
156 set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
161 static int lubbock_irq_resume(struct sys_device *dev)
163 LUB_IRQ_MASK_EN = lubbock_irq_enabled;
167 static struct sysdev_class lubbock_irq_sysclass = {
169 .resume = lubbock_irq_resume,
172 static struct sys_device lubbock_irq_device = {
173 .cls = &lubbock_irq_sysclass,
176 static int __init lubbock_irq_device_init(void)
180 if (machine_is_lubbock()) {
181 ret = sysdev_class_register(&lubbock_irq_sysclass);
183 ret = sysdev_register(&lubbock_irq_device);
188 device_initcall(lubbock_irq_device_init);
192 static int lubbock_udc_is_connected(void)
194 return (LUB_MISC_RD & (1 << 9)) == 0;
197 static struct pxa2xx_udc_mach_info udc_info __initdata = {
198 .udc_is_connected = lubbock_udc_is_connected,
199 // no D+ pullup; lubbock can't connect/disconnect in software
202 static struct resource sa1111_resources[] = {
206 .flags = IORESOURCE_MEM,
209 .start = LUBBOCK_SA1111_IRQ,
210 .end = LUBBOCK_SA1111_IRQ,
211 .flags = IORESOURCE_IRQ,
215 static struct platform_device sa1111_device = {
218 .num_resources = ARRAY_SIZE(sa1111_resources),
219 .resource = sa1111_resources,
222 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
223 * you can select it to replace the ucb1400 by switching the touchscreen cable
224 * (to J5) and poking board registers (as done below). Else it's only useful
225 * for the temperature sensors.
227 static struct pxa2xx_spi_master pxa_ssp_master_info = {
231 static int lubbock_ads7846_pendown_state(void)
233 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
237 static struct ads7846_platform_data ads_info = {
239 .vref_delay_usecs = 100, /* internal, no cap */
240 .get_pendown_state = lubbock_ads7846_pendown_state,
241 // .x_plate_ohms = 500, /* GUESS! */
242 // .y_plate_ohms = 500, /* GUESS! */
245 static void ads7846_cs(u32 command)
247 static const unsigned TS_nCS = 1 << 11;
248 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
251 static struct pxa2xx_spi_chip ads_hw = {
254 .cs_control = ads7846_cs,
257 static struct spi_board_info spi_board_info[] __initdata = { {
258 .modalias = "ads7846",
259 .platform_data = &ads_info,
260 .controller_data = &ads_hw,
261 .irq = LUBBOCK_BB_IRQ,
262 .max_speed_hz = 120000 /* max sample rate at 3V */
263 * 26 /* command + data + overhead */,
269 static struct resource smc91x_resources[] = {
271 .name = "smc91x-regs",
274 .flags = IORESOURCE_MEM,
277 .start = LUBBOCK_ETH_IRQ,
278 .end = LUBBOCK_ETH_IRQ,
279 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
282 .name = "smc91x-attrib",
285 .flags = IORESOURCE_MEM,
289 static struct smc91x_platdata lubbock_smc91x_info = {
290 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
293 static struct platform_device smc91x_device = {
296 .num_resources = ARRAY_SIZE(smc91x_resources),
297 .resource = smc91x_resources,
299 .platform_data = &lubbock_smc91x_info,
303 static struct resource flash_resources[] = {
307 .flags = IORESOURCE_MEM,
311 .end = 0x04000000 + SZ_64M - 1,
312 .flags = IORESOURCE_MEM,
316 static struct mtd_partition lubbock_partitions[] = {
318 .name = "Bootloader",
321 .mask_flags = MTD_WRITEABLE /* force read-only */
325 .offset = 0x00040000,
327 .name = "Filesystem",
328 .size = MTDPART_SIZ_FULL,
333 static struct flash_platform_data lubbock_flash_data[2] = {
335 .map_name = "cfi_probe",
336 .parts = lubbock_partitions,
337 .nr_parts = ARRAY_SIZE(lubbock_partitions),
339 .map_name = "cfi_probe",
345 static struct platform_device lubbock_flash_device[2] = {
347 .name = "pxa2xx-flash",
350 .platform_data = &lubbock_flash_data[0],
352 .resource = &flash_resources[0],
356 .name = "pxa2xx-flash",
359 .platform_data = &lubbock_flash_data[1],
361 .resource = &flash_resources[1],
366 static struct platform_device *devices[] __initdata = {
369 &lubbock_flash_device[0],
370 &lubbock_flash_device[1],
373 static struct pxafb_mode_info sharp_lm8v31_mode = {
384 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
388 static struct pxafb_mach_info sharp_lm8v31 = {
389 .modes = &sharp_lm8v31_mode,
393 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
394 LCD_AC_BIAS_FREQ(255),
397 #define MMC_POLL_RATE msecs_to_jiffies(1000)
399 static void lubbock_mmc_poll(unsigned long);
400 static irq_handler_t mmc_detect_int;
402 static struct timer_list mmc_timer = {
403 .function = lubbock_mmc_poll,
406 static void lubbock_mmc_poll(unsigned long data)
410 /* clear any previous irq state, then ... */
411 local_irq_save(flags);
412 LUB_IRQ_SET_CLR &= ~(1 << 0);
413 local_irq_restore(flags);
415 /* poll until mmc/sd card is removed */
416 if (LUB_IRQ_SET_CLR & (1 << 0))
417 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
419 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
420 enable_irq(LUBBOCK_SD_IRQ);
424 static irqreturn_t lubbock_detect_int(int irq, void *data)
426 /* IRQ is level triggered; disable, and poll for removal */
428 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
430 return mmc_detect_int(irq, data);
433 static int lubbock_mci_init(struct device *dev,
434 irq_handler_t detect_int,
437 /* detect card insert/eject */
438 mmc_detect_int = detect_int;
439 init_timer(&mmc_timer);
440 mmc_timer.data = (unsigned long) data;
441 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
442 IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
445 static int lubbock_mci_get_ro(struct device *dev)
447 return (LUB_MISC_RD & (1 << 2)) != 0;
450 static void lubbock_mci_exit(struct device *dev, void *data)
452 free_irq(LUBBOCK_SD_IRQ, data);
453 del_timer_sync(&mmc_timer);
456 static struct pxamci_platform_data lubbock_mci_platform_data = {
457 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
459 .init = lubbock_mci_init,
460 .get_ro = lubbock_mci_get_ro,
461 .exit = lubbock_mci_exit,
464 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
468 local_irq_save(flags);
469 if (mode & IR_SIRMODE) {
470 LUB_MISC_WR &= ~(1 << 4);
471 } else if (mode & IR_FIRMODE) {
472 LUB_MISC_WR |= 1 << 4;
474 pxa2xx_transceiver_mode(dev, mode);
475 local_irq_restore(flags);
478 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
479 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
480 .transceiver_mode = lubbock_irda_transceiver_mode,
483 static void __init lubbock_init(void)
485 int flashboot = (LUB_CONF_SWITCHES & 1);
487 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
489 clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
490 pxa_set_udc_info(&udc_info);
491 set_pxa_fb_info(&sharp_lm8v31);
492 pxa_set_mci_info(&lubbock_mci_platform_data);
493 pxa_set_ficp_info(&lubbock_ficp_platform_data);
494 pxa_set_ac97_info(NULL);
496 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
497 (BOOT_DEF & 1) ? 2 : 4;
498 /* Compensate for the nROMBT switch which swaps the flash banks */
499 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
500 flashboot?"Flash":"ROM", flashboot);
502 lubbock_flash_data[flashboot^1].name = "application-flash";
503 lubbock_flash_data[flashboot].name = "boot-rom";
504 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
506 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
507 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
510 static struct map_desc lubbock_io_desc[] __initdata = {
512 .virtual = LUBBOCK_FPGA_VIRT,
513 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
514 .length = 0x00100000,
519 static void __init lubbock_map_io(void)
522 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
527 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
528 /* Maintainer: MontaVista Software Inc. */
529 .phys_io = 0x40000000,
530 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
531 .map_io = lubbock_map_io,
532 .init_irq = lubbock_init_irq,
534 .init_machine = lubbock_init,