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/pxa25x.h>
45 #include <mach/gpio.h>
46 #include <mach/audio.h>
47 #include <mach/lubbock.h>
49 #include <mach/irda.h>
50 #include <mach/pxafb.h>
57 static unsigned long lubbock_pin_config[] __initdata = {
58 GPIO15_nCS_1, /* CS1 - Flash */
59 GPIO78_nCS_2, /* CS2 - Baseboard FGPA */
60 GPIO79_nCS_3, /* CS3 - SMC ethernet */
61 GPIO80_nCS_4, /* CS4 - SA1111 */
68 /* LCD - 16bpp DSTN */
112 GPIO1_GPIO | WAKEUP_ON_EDGE_RISE,
115 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
117 void lubbock_set_misc_wr(unsigned int mask, unsigned int set)
121 local_irq_save(flags);
122 LUB_MISC_WR = (LUB_MISC_WR & ~mask) | (set & mask);
123 local_irq_restore(flags);
125 EXPORT_SYMBOL(lubbock_set_misc_wr);
127 static unsigned long lubbock_irq_enabled;
129 static void lubbock_mask_irq(unsigned int irq)
131 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
132 LUB_IRQ_MASK_EN = (lubbock_irq_enabled &= ~(1 << lubbock_irq));
135 static void lubbock_unmask_irq(unsigned int irq)
137 int lubbock_irq = (irq - LUBBOCK_IRQ(0));
138 /* the irq can be acknowledged only if deasserted, so it's done here */
139 LUB_IRQ_SET_CLR &= ~(1 << lubbock_irq);
140 LUB_IRQ_MASK_EN = (lubbock_irq_enabled |= (1 << lubbock_irq));
143 static struct irq_chip lubbock_irq_chip = {
145 .ack = lubbock_mask_irq,
146 .mask = lubbock_mask_irq,
147 .unmask = lubbock_unmask_irq,
150 static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
152 unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
154 GEDR(0) = GPIO_bit(0); /* clear our parent irq */
155 if (likely(pending)) {
156 irq = LUBBOCK_IRQ(0) + __ffs(pending);
157 generic_handle_irq(irq);
159 pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
163 static void __init lubbock_init_irq(void)
169 /* setup extra lubbock irqs */
170 for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
171 set_irq_chip(irq, &lubbock_irq_chip);
172 set_irq_handler(irq, handle_level_irq);
173 set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
176 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler);
177 set_irq_type(IRQ_GPIO(0), IRQ_TYPE_EDGE_FALLING);
182 static int lubbock_irq_resume(struct sys_device *dev)
184 LUB_IRQ_MASK_EN = lubbock_irq_enabled;
188 static struct sysdev_class lubbock_irq_sysclass = {
190 .resume = lubbock_irq_resume,
193 static struct sys_device lubbock_irq_device = {
194 .cls = &lubbock_irq_sysclass,
197 static int __init lubbock_irq_device_init(void)
201 if (machine_is_lubbock()) {
202 ret = sysdev_class_register(&lubbock_irq_sysclass);
204 ret = sysdev_register(&lubbock_irq_device);
209 device_initcall(lubbock_irq_device_init);
213 static int lubbock_udc_is_connected(void)
215 return (LUB_MISC_RD & (1 << 9)) == 0;
218 static struct pxa2xx_udc_mach_info udc_info __initdata = {
219 .udc_is_connected = lubbock_udc_is_connected,
220 // no D+ pullup; lubbock can't connect/disconnect in software
223 static struct resource sa1111_resources[] = {
227 .flags = IORESOURCE_MEM,
230 .start = LUBBOCK_SA1111_IRQ,
231 .end = LUBBOCK_SA1111_IRQ,
232 .flags = IORESOURCE_IRQ,
236 static struct platform_device sa1111_device = {
239 .num_resources = ARRAY_SIZE(sa1111_resources),
240 .resource = sa1111_resources,
243 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
244 * you can select it to replace the ucb1400 by switching the touchscreen cable
245 * (to J5) and poking board registers (as done below). Else it's only useful
246 * for the temperature sensors.
248 static struct pxa2xx_spi_master pxa_ssp_master_info = {
252 static int lubbock_ads7846_pendown_state(void)
254 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
258 static struct ads7846_platform_data ads_info = {
260 .vref_delay_usecs = 100, /* internal, no cap */
261 .get_pendown_state = lubbock_ads7846_pendown_state,
262 // .x_plate_ohms = 500, /* GUESS! */
263 // .y_plate_ohms = 500, /* GUESS! */
266 static void ads7846_cs(u32 command)
268 static const unsigned TS_nCS = 1 << 11;
269 lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
272 static struct pxa2xx_spi_chip ads_hw = {
275 .cs_control = ads7846_cs,
278 static struct spi_board_info spi_board_info[] __initdata = { {
279 .modalias = "ads7846",
280 .platform_data = &ads_info,
281 .controller_data = &ads_hw,
282 .irq = LUBBOCK_BB_IRQ,
283 .max_speed_hz = 120000 /* max sample rate at 3V */
284 * 26 /* command + data + overhead */,
290 static struct resource smc91x_resources[] = {
292 .name = "smc91x-regs",
295 .flags = IORESOURCE_MEM,
298 .start = LUBBOCK_ETH_IRQ,
299 .end = LUBBOCK_ETH_IRQ,
300 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
303 .name = "smc91x-attrib",
306 .flags = IORESOURCE_MEM,
310 static struct smc91x_platdata lubbock_smc91x_info = {
311 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT | SMC91X_IO_SHIFT_2,
314 static struct platform_device smc91x_device = {
317 .num_resources = ARRAY_SIZE(smc91x_resources),
318 .resource = smc91x_resources,
320 .platform_data = &lubbock_smc91x_info,
324 static struct resource flash_resources[] = {
328 .flags = IORESOURCE_MEM,
332 .end = 0x04000000 + SZ_64M - 1,
333 .flags = IORESOURCE_MEM,
337 static struct mtd_partition lubbock_partitions[] = {
339 .name = "Bootloader",
342 .mask_flags = MTD_WRITEABLE /* force read-only */
346 .offset = 0x00040000,
348 .name = "Filesystem",
349 .size = MTDPART_SIZ_FULL,
354 static struct flash_platform_data lubbock_flash_data[2] = {
356 .map_name = "cfi_probe",
357 .parts = lubbock_partitions,
358 .nr_parts = ARRAY_SIZE(lubbock_partitions),
360 .map_name = "cfi_probe",
366 static struct platform_device lubbock_flash_device[2] = {
368 .name = "pxa2xx-flash",
371 .platform_data = &lubbock_flash_data[0],
373 .resource = &flash_resources[0],
377 .name = "pxa2xx-flash",
380 .platform_data = &lubbock_flash_data[1],
382 .resource = &flash_resources[1],
387 static struct platform_device *devices[] __initdata = {
390 &lubbock_flash_device[0],
391 &lubbock_flash_device[1],
394 static struct pxafb_mode_info sharp_lm8v31_mode = {
405 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
409 static struct pxafb_mach_info sharp_lm8v31 = {
410 .modes = &sharp_lm8v31_mode,
414 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
415 LCD_AC_BIAS_FREQ(255),
418 #define MMC_POLL_RATE msecs_to_jiffies(1000)
420 static void lubbock_mmc_poll(unsigned long);
421 static irq_handler_t mmc_detect_int;
423 static struct timer_list mmc_timer = {
424 .function = lubbock_mmc_poll,
427 static void lubbock_mmc_poll(unsigned long data)
431 /* clear any previous irq state, then ... */
432 local_irq_save(flags);
433 LUB_IRQ_SET_CLR &= ~(1 << 0);
434 local_irq_restore(flags);
436 /* poll until mmc/sd card is removed */
437 if (LUB_IRQ_SET_CLR & (1 << 0))
438 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
440 (void) mmc_detect_int(LUBBOCK_SD_IRQ, (void *)data);
441 enable_irq(LUBBOCK_SD_IRQ);
445 static irqreturn_t lubbock_detect_int(int irq, void *data)
447 /* IRQ is level triggered; disable, and poll for removal */
449 mod_timer(&mmc_timer, jiffies + MMC_POLL_RATE);
451 return mmc_detect_int(irq, data);
454 static int lubbock_mci_init(struct device *dev,
455 irq_handler_t detect_int,
458 /* detect card insert/eject */
459 mmc_detect_int = detect_int;
460 init_timer(&mmc_timer);
461 mmc_timer.data = (unsigned long) data;
462 return request_irq(LUBBOCK_SD_IRQ, lubbock_detect_int,
463 IRQF_SAMPLE_RANDOM, "lubbock-sd-detect", data);
466 static int lubbock_mci_get_ro(struct device *dev)
468 return (LUB_MISC_RD & (1 << 2)) != 0;
471 static void lubbock_mci_exit(struct device *dev, void *data)
473 free_irq(LUBBOCK_SD_IRQ, data);
474 del_timer_sync(&mmc_timer);
477 static struct pxamci_platform_data lubbock_mci_platform_data = {
478 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
480 .init = lubbock_mci_init,
481 .get_ro = lubbock_mci_get_ro,
482 .exit = lubbock_mci_exit,
485 static void lubbock_irda_transceiver_mode(struct device *dev, int mode)
489 local_irq_save(flags);
490 if (mode & IR_SIRMODE) {
491 LUB_MISC_WR &= ~(1 << 4);
492 } else if (mode & IR_FIRMODE) {
493 LUB_MISC_WR |= 1 << 4;
495 pxa2xx_transceiver_mode(dev, mode);
496 local_irq_restore(flags);
499 static struct pxaficp_platform_data lubbock_ficp_platform_data = {
500 .transceiver_cap = IR_SIRMODE | IR_FIRMODE,
501 .transceiver_mode = lubbock_irda_transceiver_mode,
504 static void __init lubbock_init(void)
506 int flashboot = (LUB_CONF_SWITCHES & 1);
508 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config));
510 clk_add_alias("SA1111_CLK", NULL, "GPIO11_CLK", NULL);
511 pxa_set_udc_info(&udc_info);
512 set_pxa_fb_info(&sharp_lm8v31);
513 pxa_set_mci_info(&lubbock_mci_platform_data);
514 pxa_set_ficp_info(&lubbock_ficp_platform_data);
515 pxa_set_ac97_info(NULL);
517 lubbock_flash_data[0].width = lubbock_flash_data[1].width =
518 (BOOT_DEF & 1) ? 2 : 4;
519 /* Compensate for the nROMBT switch which swaps the flash banks */
520 printk(KERN_NOTICE "Lubbock configured to boot from %s (bank %d)\n",
521 flashboot?"Flash":"ROM", flashboot);
523 lubbock_flash_data[flashboot^1].name = "application-flash";
524 lubbock_flash_data[flashboot].name = "boot-rom";
525 (void) platform_add_devices(devices, ARRAY_SIZE(devices));
527 pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
528 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
531 static struct map_desc lubbock_io_desc[] __initdata = {
533 .virtual = LUBBOCK_FPGA_VIRT,
534 .pfn = __phys_to_pfn(LUBBOCK_FPGA_PHYS),
535 .length = 0x00100000,
540 static void __init lubbock_map_io(void)
543 iotable_init(lubbock_io_desc, ARRAY_SIZE(lubbock_io_desc));
548 MACHINE_START(LUBBOCK, "Intel DBPXA250 Development Platform (aka Lubbock)")
549 /* Maintainer: MontaVista Software Inc. */
550 .phys_io = 0x40000000,
551 .io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
552 .map_io = lubbock_map_io,
553 .init_irq = lubbock_init_irq,
555 .init_machine = lubbock_init,