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/gpio.h>
15 #include <linux/module.h>
16 #include <linux/kernel.h>
17 #include <linux/init.h>
19 #include <linux/platform_device.h>
20 #include <linux/syscore_ops.h>
21 #include <linux/major.h>
23 #include <linux/interrupt.h>
24 #include <linux/mtd/mtd.h>
25 #include <linux/mtd/partitions.h>
26 #include <linux/smc91x.h>
27 #include <linux/slab.h>
28 #include <linux/leds.h>
30 #include <linux/spi/spi.h>
31 #include <linux/spi/ads7846.h>
32 #include <linux/spi/pxa2xx_spi.h>
34 #include <asm/setup.h>
35 #include <asm/memory.h>
36 #include <asm/mach-types.h>
37 #include <mach/hardware.h>
39 #include <asm/sizes.h>
41 #include <asm/mach/arch.h>
42 #include <asm/mach/map.h>
43 #include <asm/mach/irq.h>
44 #include <asm/mach/flash.h>
46 #include <asm/hardware/sa1111.h>
48 #include <mach/pxa25x.h>
49 #include <mach/audio.h>
50 #include <mach/lubbock.h>
52 #include <linux/platform_data/irda-pxaficp.h>
53 #include <linux/platform_data/video-pxafb.h>
54 #include <linux/platform_data/mmc-pxamci.h>
56 #include <mach/smemc.h>
62 static unsigned long lubbock_pin_config
[] __initdata
= {
63 GPIO15_nCS_1
, /* CS1 - Flash */
64 GPIO78_nCS_2
, /* CS2 - Baseboard FGPA */
65 GPIO79_nCS_3
, /* CS3 - SMC ethernet */
66 GPIO80_nCS_4
, /* CS4 - SA1111 */
75 GPIO29_AC97_SDATA_IN_0
,
76 GPIO30_AC97_SDATA_OUT
,
79 /* LCD - 16bpp DSTN */
80 GPIOxx_LCD_DSTN_16BPP
,
105 GPIO1_GPIO
| WAKEUP_ON_EDGE_RISE
,
108 #define LUB_HEXLED __LUB_REG(LUBBOCK_FPGA_PHYS + 0x010)
109 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
111 void lubbock_set_hexled(uint32_t value
)
116 void lubbock_set_misc_wr(unsigned int mask
, unsigned int set
)
120 local_irq_save(flags
);
121 LUB_MISC_WR
= (LUB_MISC_WR
& ~mask
) | (set
& mask
);
122 local_irq_restore(flags
);
124 EXPORT_SYMBOL(lubbock_set_misc_wr
);
126 static unsigned long lubbock_irq_enabled
;
128 static void lubbock_mask_irq(struct irq_data
*d
)
130 int lubbock_irq
= (d
->irq
- LUBBOCK_IRQ(0));
131 LUB_IRQ_MASK_EN
= (lubbock_irq_enabled
&= ~(1 << lubbock_irq
));
134 static void lubbock_unmask_irq(struct irq_data
*d
)
136 int lubbock_irq
= (d
->irq
- LUBBOCK_IRQ(0));
137 /* the irq can be acknowledged only if deasserted, so it's done here */
138 LUB_IRQ_SET_CLR
&= ~(1 << lubbock_irq
);
139 LUB_IRQ_MASK_EN
= (lubbock_irq_enabled
|= (1 << lubbock_irq
));
142 static struct irq_chip lubbock_irq_chip
= {
144 .irq_ack
= lubbock_mask_irq
,
145 .irq_mask
= lubbock_mask_irq
,
146 .irq_unmask
= lubbock_unmask_irq
,
149 static void lubbock_irq_handler(unsigned int irq
, struct irq_desc
*desc
)
151 unsigned long pending
= LUB_IRQ_SET_CLR
& lubbock_irq_enabled
;
153 /* clear our parent irq */
154 desc
->irq_data
.chip
->irq_ack(&desc
->irq_data
);
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 irq_set_chip_and_handler(irq
, &lubbock_irq_chip
,
173 set_irq_flags(irq
, IRQF_VALID
| IRQF_PROBE
);
176 irq_set_chained_handler(PXA_GPIO_TO_IRQ(0), lubbock_irq_handler
);
177 irq_set_irq_type(PXA_GPIO_TO_IRQ(0), IRQ_TYPE_EDGE_FALLING
);
182 static void lubbock_irq_resume(void)
184 LUB_IRQ_MASK_EN
= lubbock_irq_enabled
;
187 static struct syscore_ops lubbock_irq_syscore_ops
= {
188 .resume
= lubbock_irq_resume
,
191 static int __init
lubbock_irq_device_init(void)
193 if (machine_is_lubbock()) {
194 register_syscore_ops(&lubbock_irq_syscore_ops
);
200 device_initcall(lubbock_irq_device_init
);
204 static int lubbock_udc_is_connected(void)
206 return (LUB_MISC_RD
& (1 << 9)) == 0;
209 static struct pxa2xx_udc_mach_info udc_info __initdata
= {
210 .udc_is_connected
= lubbock_udc_is_connected
,
211 // no D+ pullup; lubbock can't connect/disconnect in software
214 static struct resource sa1111_resources
[] = {
218 .flags
= IORESOURCE_MEM
,
221 .start
= LUBBOCK_SA1111_IRQ
,
222 .end
= LUBBOCK_SA1111_IRQ
,
223 .flags
= IORESOURCE_IRQ
,
227 static struct sa1111_platform_data sa1111_info
= {
228 .irq_base
= LUBBOCK_SA1111_IRQ_BASE
,
229 .disable_devs
= SA1111_DEVID_SAC
,
232 static struct platform_device sa1111_device
= {
235 .num_resources
= ARRAY_SIZE(sa1111_resources
),
236 .resource
= sa1111_resources
,
238 .platform_data
= &sa1111_info
,
242 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
243 * you can select it to replace the ucb1400 by switching the touchscreen cable
244 * (to J5) and poking board registers (as done below). Else it's only useful
245 * for the temperature sensors.
247 static struct pxa2xx_spi_master pxa_ssp_master_info
= {
251 static int lubbock_ads7846_pendown_state(void)
253 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
257 static struct ads7846_platform_data ads_info
= {
259 .vref_delay_usecs
= 100, /* internal, no cap */
260 .get_pendown_state
= lubbock_ads7846_pendown_state
,
261 // .x_plate_ohms = 500, /* GUESS! */
262 // .y_plate_ohms = 500, /* GUESS! */
265 static void ads7846_cs(u32 command
)
267 static const unsigned TS_nCS
= 1 << 11;
268 lubbock_set_misc_wr(TS_nCS
, (command
== PXA2XX_CS_ASSERT
) ? 0 : TS_nCS
);
271 static struct pxa2xx_spi_chip ads_hw
= {
274 .cs_control
= ads7846_cs
,
277 static struct spi_board_info spi_board_info
[] __initdata
= { {
278 .modalias
= "ads7846",
279 .platform_data
= &ads_info
,
280 .controller_data
= &ads_hw
,
281 .irq
= LUBBOCK_BB_IRQ
,
282 .max_speed_hz
= 120000 /* max sample rate at 3V */
283 * 26 /* command + data + overhead */,
289 static struct resource smc91x_resources
[] = {
291 .name
= "smc91x-regs",
294 .flags
= IORESOURCE_MEM
,
297 .start
= LUBBOCK_ETH_IRQ
,
298 .end
= LUBBOCK_ETH_IRQ
,
299 .flags
= IORESOURCE_IRQ
| IORESOURCE_IRQ_HIGHEDGE
,
302 .name
= "smc91x-attrib",
305 .flags
= IORESOURCE_MEM
,
309 static struct smc91x_platdata lubbock_smc91x_info
= {
310 .flags
= SMC91X_USE_16BIT
| SMC91X_NOWAIT
| SMC91X_IO_SHIFT_2
,
313 static struct platform_device smc91x_device
= {
316 .num_resources
= ARRAY_SIZE(smc91x_resources
),
317 .resource
= smc91x_resources
,
319 .platform_data
= &lubbock_smc91x_info
,
323 static struct resource flash_resources
[] = {
327 .flags
= IORESOURCE_MEM
,
331 .end
= 0x04000000 + SZ_64M
- 1,
332 .flags
= IORESOURCE_MEM
,
336 static struct mtd_partition lubbock_partitions
[] = {
338 .name
= "Bootloader",
341 .mask_flags
= MTD_WRITEABLE
/* force read-only */
345 .offset
= 0x00040000,
347 .name
= "Filesystem",
348 .size
= MTDPART_SIZ_FULL
,
353 static struct flash_platform_data lubbock_flash_data
[2] = {
355 .map_name
= "cfi_probe",
356 .parts
= lubbock_partitions
,
357 .nr_parts
= ARRAY_SIZE(lubbock_partitions
),
359 .map_name
= "cfi_probe",
365 static struct platform_device lubbock_flash_device
[2] = {
367 .name
= "pxa2xx-flash",
370 .platform_data
= &lubbock_flash_data
[0],
372 .resource
= &flash_resources
[0],
376 .name
= "pxa2xx-flash",
379 .platform_data
= &lubbock_flash_data
[1],
381 .resource
= &flash_resources
[1],
386 static struct platform_device
*devices
[] __initdata
= {
389 &lubbock_flash_device
[0],
390 &lubbock_flash_device
[1],
393 static struct pxafb_mode_info sharp_lm8v31_mode
= {
404 .sync
= FB_SYNC_HOR_HIGH_ACT
| FB_SYNC_VERT_HIGH_ACT
,
408 static struct pxafb_mach_info sharp_lm8v31
= {
409 .modes
= &sharp_lm8v31_mode
,
413 .lcd_conn
= LCD_COLOR_DSTN_16BPP
| LCD_PCLK_EDGE_FALL
|
414 LCD_AC_BIAS_FREQ(255),
417 #define MMC_POLL_RATE msecs_to_jiffies(1000)
419 static void lubbock_mmc_poll(unsigned long);
420 static irq_handler_t mmc_detect_int
;
422 static struct timer_list mmc_timer
= {
423 .function
= lubbock_mmc_poll
,
426 static void lubbock_mmc_poll(unsigned long data
)
430 /* clear any previous irq state, then ... */
431 local_irq_save(flags
);
432 LUB_IRQ_SET_CLR
&= ~(1 << 0);
433 local_irq_restore(flags
);
435 /* poll until mmc/sd card is removed */
436 if (LUB_IRQ_SET_CLR
& (1 << 0))
437 mod_timer(&mmc_timer
, jiffies
+ MMC_POLL_RATE
);
439 (void) mmc_detect_int(LUBBOCK_SD_IRQ
, (void *)data
);
440 enable_irq(LUBBOCK_SD_IRQ
);
444 static irqreturn_t
lubbock_detect_int(int irq
, void *data
)
446 /* IRQ is level triggered; disable, and poll for removal */
448 mod_timer(&mmc_timer
, jiffies
+ MMC_POLL_RATE
);
450 return mmc_detect_int(irq
, data
);
453 static int lubbock_mci_init(struct device
*dev
,
454 irq_handler_t detect_int
,
457 /* detect card insert/eject */
458 mmc_detect_int
= detect_int
;
459 init_timer(&mmc_timer
);
460 mmc_timer
.data
= (unsigned long) data
;
461 return request_irq(LUBBOCK_SD_IRQ
, lubbock_detect_int
,
462 0, "lubbock-sd-detect", data
);
465 static int lubbock_mci_get_ro(struct device
*dev
)
467 return (LUB_MISC_RD
& (1 << 2)) != 0;
470 static void lubbock_mci_exit(struct device
*dev
, void *data
)
472 free_irq(LUBBOCK_SD_IRQ
, data
);
473 del_timer_sync(&mmc_timer
);
476 static struct pxamci_platform_data lubbock_mci_platform_data
= {
477 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
478 .detect_delay_ms
= 10,
479 .init
= lubbock_mci_init
,
480 .get_ro
= lubbock_mci_get_ro
,
481 .exit
= lubbock_mci_exit
,
482 .gpio_card_detect
= -1,
487 static void lubbock_irda_transceiver_mode(struct device
*dev
, int mode
)
491 local_irq_save(flags
);
492 if (mode
& IR_SIRMODE
) {
493 LUB_MISC_WR
&= ~(1 << 4);
494 } else if (mode
& IR_FIRMODE
) {
495 LUB_MISC_WR
|= 1 << 4;
497 pxa2xx_transceiver_mode(dev
, mode
);
498 local_irq_restore(flags
);
501 static struct pxaficp_platform_data lubbock_ficp_platform_data
= {
503 .transceiver_cap
= IR_SIRMODE
| IR_FIRMODE
,
504 .transceiver_mode
= lubbock_irda_transceiver_mode
,
507 static void __init
lubbock_init(void)
509 int flashboot
= (LUB_CONF_SWITCHES
& 1);
511 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config
));
513 pxa_set_ffuart_info(NULL
);
514 pxa_set_btuart_info(NULL
);
515 pxa_set_stuart_info(NULL
);
517 clk_add_alias("SA1111_CLK", NULL
, "GPIO11_CLK", NULL
);
518 pxa_set_udc_info(&udc_info
);
519 pxa_set_fb_info(NULL
, &sharp_lm8v31
);
520 pxa_set_mci_info(&lubbock_mci_platform_data
);
521 pxa_set_ficp_info(&lubbock_ficp_platform_data
);
522 pxa_set_ac97_info(NULL
);
524 lubbock_flash_data
[0].width
= lubbock_flash_data
[1].width
=
525 (__raw_readl(BOOT_DEF
) & 1) ? 2 : 4;
526 /* Compensate for the nROMBT switch which swaps the flash banks */
527 printk(KERN_NOTICE
"Lubbock configured to boot from %s (bank %d)\n",
528 flashboot
?"Flash":"ROM", flashboot
);
530 lubbock_flash_data
[flashboot
^1].name
= "application-flash";
531 lubbock_flash_data
[flashboot
].name
= "boot-rom";
532 (void) platform_add_devices(devices
, ARRAY_SIZE(devices
));
534 pxa2xx_set_spi_info(1, &pxa_ssp_master_info
);
535 spi_register_board_info(spi_board_info
, ARRAY_SIZE(spi_board_info
));
538 static struct map_desc lubbock_io_desc
[] __initdata
= {
540 .virtual = LUBBOCK_FPGA_VIRT
,
541 .pfn
= __phys_to_pfn(LUBBOCK_FPGA_PHYS
),
542 .length
= 0x00100000,
547 static void __init
lubbock_map_io(void)
550 iotable_init(lubbock_io_desc
, ARRAY_SIZE(lubbock_io_desc
));
556 * Driver for the 8 discrete LEDs available for general use:
557 * Note: bits [15-8] are used to enable/blank the 8 7 segment hex displays
558 * so be sure to not monkey with them here.
561 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
563 struct led_classdev cdev
;
568 * The triggers lines up below will only be used if the
569 * LED triggers are compiled in.
571 static const struct {
575 { "lubbock:D28", "default-on", },
576 { "lubbock:D27", "cpu0", },
577 { "lubbock:D26", "heartbeat" },
585 static void lubbock_led_set(struct led_classdev
*cdev
,
586 enum led_brightness b
)
588 struct lubbock_led
*led
= container_of(cdev
,
589 struct lubbock_led
, cdev
);
590 u32 reg
= LUB_DISC_BLNK_LED
;
597 LUB_DISC_BLNK_LED
= reg
;
600 static enum led_brightness
lubbock_led_get(struct led_classdev
*cdev
)
602 struct lubbock_led
*led
= container_of(cdev
,
603 struct lubbock_led
, cdev
);
604 u32 reg
= LUB_DISC_BLNK_LED
;
606 return (reg
& led
->mask
) ? LED_FULL
: LED_OFF
;
609 static int __init
lubbock_leds_init(void)
613 if (!machine_is_lubbock())
617 LUB_DISC_BLNK_LED
|= 0xff;
618 for (i
= 0; i
< ARRAY_SIZE(lubbock_leds
); i
++) {
619 struct lubbock_led
*led
;
621 led
= kzalloc(sizeof(*led
), GFP_KERNEL
);
625 led
->cdev
.name
= lubbock_leds
[i
].name
;
626 led
->cdev
.brightness_set
= lubbock_led_set
;
627 led
->cdev
.brightness_get
= lubbock_led_get
;
628 led
->cdev
.default_trigger
= lubbock_leds
[i
].trigger
;
631 if (led_classdev_register(NULL
, &led
->cdev
) < 0) {
641 * Since we may have triggers on any subsystem, defer registration
642 * until after subsystem_init.
644 fs_initcall(lubbock_leds_init
);
647 MACHINE_START(LUBBOCK
, "Intel DBPXA250 Development Platform (aka Lubbock)")
648 /* Maintainer: MontaVista Software Inc. */
649 .map_io
= lubbock_map_io
,
650 .nr_irqs
= LUBBOCK_NR_IRQS
,
651 .init_irq
= lubbock_init_irq
,
652 .handle_irq
= pxa25x_handle_irq
,
653 .init_time
= pxa_timer_init
,
654 .init_machine
= lubbock_init
,
655 .restart
= pxa_restart
,