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/lubbock.h>
47 #include <asm/arch/udc.h>
48 #include <asm/arch/irda.h>
49 #include <asm/arch/pxafb.h>
50 #include <asm/arch/mmc.h>
55 static unsigned long lubbock_pin_config
[] __initdata
= {
56 GPIO15_nCS_1
, /* CS1 - Flash */
57 GPIO79_nCS_3
, /* CS3 - SMC ethernet */
87 GPIO1_GPIO
| WAKEUP_ON_EDGE_RISE
,
90 #define LUB_MISC_WR __LUB_REG(LUBBOCK_FPGA_PHYS + 0x080)
92 void lubbock_set_misc_wr(unsigned int mask
, unsigned int set
)
96 local_irq_save(flags
);
97 LUB_MISC_WR
= (LUB_MISC_WR
& ~mask
) | (set
& mask
);
98 local_irq_restore(flags
);
100 EXPORT_SYMBOL(lubbock_set_misc_wr
);
102 static unsigned long lubbock_irq_enabled
;
104 static void lubbock_mask_irq(unsigned int irq
)
106 int lubbock_irq
= (irq
- LUBBOCK_IRQ(0));
107 LUB_IRQ_MASK_EN
= (lubbock_irq_enabled
&= ~(1 << lubbock_irq
));
110 static void lubbock_unmask_irq(unsigned int irq
)
112 int lubbock_irq
= (irq
- LUBBOCK_IRQ(0));
113 /* the irq can be acknowledged only if deasserted, so it's done here */
114 LUB_IRQ_SET_CLR
&= ~(1 << lubbock_irq
);
115 LUB_IRQ_MASK_EN
= (lubbock_irq_enabled
|= (1 << lubbock_irq
));
118 static struct irq_chip lubbock_irq_chip
= {
120 .ack
= lubbock_mask_irq
,
121 .mask
= lubbock_mask_irq
,
122 .unmask
= lubbock_unmask_irq
,
125 static void lubbock_irq_handler(unsigned int irq
, struct irq_desc
*desc
)
127 unsigned long pending
= LUB_IRQ_SET_CLR
& lubbock_irq_enabled
;
129 GEDR(0) = GPIO_bit(0); /* clear our parent irq */
130 if (likely(pending
)) {
131 irq
= LUBBOCK_IRQ(0) + __ffs(pending
);
132 desc
= irq_desc
+ irq
;
133 desc_handle_irq(irq
, desc
);
135 pending
= LUB_IRQ_SET_CLR
& lubbock_irq_enabled
;
139 static void __init
lubbock_init_irq(void)
145 /* setup extra lubbock irqs */
146 for (irq
= LUBBOCK_IRQ(0); irq
<= LUBBOCK_LAST_IRQ
; irq
++) {
147 set_irq_chip(irq
, &lubbock_irq_chip
);
148 set_irq_handler(irq
, handle_level_irq
);
149 set_irq_flags(irq
, IRQF_VALID
| IRQF_PROBE
);
152 set_irq_chained_handler(IRQ_GPIO(0), lubbock_irq_handler
);
153 set_irq_type(IRQ_GPIO(0), IRQT_FALLING
);
158 static int lubbock_irq_resume(struct sys_device
*dev
)
160 LUB_IRQ_MASK_EN
= lubbock_irq_enabled
;
164 static struct sysdev_class lubbock_irq_sysclass
= {
166 .resume
= lubbock_irq_resume
,
169 static struct sys_device lubbock_irq_device
= {
170 .cls
= &lubbock_irq_sysclass
,
173 static int __init
lubbock_irq_device_init(void)
177 if (machine_is_lubbock()) {
178 ret
= sysdev_class_register(&lubbock_irq_sysclass
);
180 ret
= sysdev_register(&lubbock_irq_device
);
185 device_initcall(lubbock_irq_device_init
);
189 static int lubbock_udc_is_connected(void)
191 return (LUB_MISC_RD
& (1 << 9)) == 0;
194 static struct pxa2xx_udc_mach_info udc_info __initdata
= {
195 .udc_is_connected
= lubbock_udc_is_connected
,
196 // no D+ pullup; lubbock can't connect/disconnect in software
199 static struct platform_device lub_audio_device
= {
200 .name
= "pxa2xx-ac97",
204 static struct resource sa1111_resources
[] = {
208 .flags
= IORESOURCE_MEM
,
211 .start
= LUBBOCK_SA1111_IRQ
,
212 .end
= LUBBOCK_SA1111_IRQ
,
213 .flags
= IORESOURCE_IRQ
,
217 static struct platform_device sa1111_device
= {
220 .num_resources
= ARRAY_SIZE(sa1111_resources
),
221 .resource
= sa1111_resources
,
224 /* ADS7846 is connected through SSP ... and if your board has J5 populated,
225 * you can select it to replace the ucb1400 by switching the touchscreen cable
226 * (to J5) and poking board registers (as done below). Else it's only useful
227 * for the temperature sensors.
229 static struct pxa2xx_spi_master pxa_ssp_master_info
= {
233 static struct platform_device pxa_ssp
= {
234 .name
= "pxa2xx-spi",
237 .platform_data
= &pxa_ssp_master_info
,
241 static int lubbock_ads7846_pendown_state(void)
243 /* TS_BUSY is bit 8 in LUB_MISC_RD, but pendown is irq-only */
247 static struct ads7846_platform_data ads_info
= {
249 .vref_delay_usecs
= 100, /* internal, no cap */
250 .get_pendown_state
= lubbock_ads7846_pendown_state
,
251 // .x_plate_ohms = 500, /* GUESS! */
252 // .y_plate_ohms = 500, /* GUESS! */
255 static void ads7846_cs(u32 command
)
257 static const unsigned TS_nCS
= 1 << 11;
258 lubbock_set_misc_wr(TS_nCS
, (command
== PXA2XX_CS_ASSERT
) ? 0 : TS_nCS
);
261 static struct pxa2xx_spi_chip ads_hw
= {
264 .cs_control
= ads7846_cs
,
267 static struct spi_board_info spi_board_info
[] __initdata
= { {
268 .modalias
= "ads7846",
269 .platform_data
= &ads_info
,
270 .controller_data
= &ads_hw
,
271 .irq
= LUBBOCK_BB_IRQ
,
272 .max_speed_hz
= 120000 /* max sample rate at 3V */
273 * 26 /* command + data + overhead */,
279 static struct resource smc91x_resources
[] = {
281 .name
= "smc91x-regs",
284 .flags
= IORESOURCE_MEM
,
287 .start
= LUBBOCK_ETH_IRQ
,
288 .end
= LUBBOCK_ETH_IRQ
,
289 .flags
= IORESOURCE_IRQ
| IORESOURCE_IRQ_HIGHEDGE
,
292 .name
= "smc91x-attrib",
295 .flags
= IORESOURCE_MEM
,
299 static struct platform_device smc91x_device
= {
302 .num_resources
= ARRAY_SIZE(smc91x_resources
),
303 .resource
= smc91x_resources
,
306 static struct resource flash_resources
[] = {
310 .flags
= IORESOURCE_MEM
,
314 .end
= 0x04000000 + SZ_64M
- 1,
315 .flags
= IORESOURCE_MEM
,
319 static struct mtd_partition lubbock_partitions
[] = {
321 .name
= "Bootloader",
324 .mask_flags
= MTD_WRITEABLE
/* force read-only */
328 .offset
= 0x00040000,
330 .name
= "Filesystem",
331 .size
= MTDPART_SIZ_FULL
,
336 static struct flash_platform_data lubbock_flash_data
[2] = {
338 .map_name
= "cfi_probe",
339 .parts
= lubbock_partitions
,
340 .nr_parts
= ARRAY_SIZE(lubbock_partitions
),
342 .map_name
= "cfi_probe",
348 static struct platform_device lubbock_flash_device
[2] = {
350 .name
= "pxa2xx-flash",
353 .platform_data
= &lubbock_flash_data
[0],
355 .resource
= &flash_resources
[0],
359 .name
= "pxa2xx-flash",
362 .platform_data
= &lubbock_flash_data
[1],
364 .resource
= &flash_resources
[1],
369 static struct platform_device
*devices
[] __initdata
= {
373 &lubbock_flash_device
[0],
374 &lubbock_flash_device
[1],
378 static struct pxafb_mode_info sharp_lm8v31_mode
= {
389 .sync
= FB_SYNC_HOR_HIGH_ACT
| FB_SYNC_VERT_HIGH_ACT
,
393 static struct pxafb_mach_info sharp_lm8v31
= {
394 .modes
= &sharp_lm8v31_mode
,
399 .lccr3
= LCCR3_PCP
| LCCR3_Acb(255),
402 #define MMC_POLL_RATE msecs_to_jiffies(1000)
404 static void lubbock_mmc_poll(unsigned long);
405 static irq_handler_t mmc_detect_int
;
407 static struct timer_list mmc_timer
= {
408 .function
= lubbock_mmc_poll
,
411 static void lubbock_mmc_poll(unsigned long data
)
415 /* clear any previous irq state, then ... */
416 local_irq_save(flags
);
417 LUB_IRQ_SET_CLR
&= ~(1 << 0);
418 local_irq_restore(flags
);
420 /* poll until mmc/sd card is removed */
421 if (LUB_IRQ_SET_CLR
& (1 << 0))
422 mod_timer(&mmc_timer
, jiffies
+ MMC_POLL_RATE
);
424 (void) mmc_detect_int(LUBBOCK_SD_IRQ
, (void *)data
);
425 enable_irq(LUBBOCK_SD_IRQ
);
429 static irqreturn_t
lubbock_detect_int(int irq
, void *data
)
431 /* IRQ is level triggered; disable, and poll for removal */
433 mod_timer(&mmc_timer
, jiffies
+ MMC_POLL_RATE
);
435 return mmc_detect_int(irq
, data
);
438 static int lubbock_mci_init(struct device
*dev
,
439 irq_handler_t detect_int
,
442 /* detect card insert/eject */
443 mmc_detect_int
= detect_int
;
444 init_timer(&mmc_timer
);
445 mmc_timer
.data
= (unsigned long) data
;
446 return request_irq(LUBBOCK_SD_IRQ
, lubbock_detect_int
,
447 IRQF_SAMPLE_RANDOM
, "lubbock-sd-detect", data
);
450 static int lubbock_mci_get_ro(struct device
*dev
)
452 return (LUB_MISC_RD
& (1 << 2)) != 0;
455 static void lubbock_mci_exit(struct device
*dev
, void *data
)
457 free_irq(LUBBOCK_SD_IRQ
, data
);
458 del_timer_sync(&mmc_timer
);
461 static struct pxamci_platform_data lubbock_mci_platform_data
= {
462 .ocr_mask
= MMC_VDD_32_33
|MMC_VDD_33_34
,
464 .init
= lubbock_mci_init
,
465 .get_ro
= lubbock_mci_get_ro
,
466 .exit
= lubbock_mci_exit
,
469 static void lubbock_irda_transceiver_mode(struct device
*dev
, int mode
)
473 local_irq_save(flags
);
474 if (mode
& IR_SIRMODE
) {
475 LUB_MISC_WR
&= ~(1 << 4);
476 } else if (mode
& IR_FIRMODE
) {
477 LUB_MISC_WR
|= 1 << 4;
479 local_irq_restore(flags
);
482 static struct pxaficp_platform_data lubbock_ficp_platform_data
= {
483 .transceiver_cap
= IR_SIRMODE
| IR_FIRMODE
,
484 .transceiver_mode
= lubbock_irda_transceiver_mode
,
487 static void __init
lubbock_init(void)
489 int flashboot
= (LUB_CONF_SWITCHES
& 1);
491 pxa2xx_mfp_config(ARRAY_AND_SIZE(lubbock_pin_config
));
493 pxa_set_udc_info(&udc_info
);
494 set_pxa_fb_info(&sharp_lm8v31
);
495 pxa_set_mci_info(&lubbock_mci_platform_data
);
496 pxa_set_ficp_info(&lubbock_ficp_platform_data
);
498 lubbock_flash_data
[0].width
= lubbock_flash_data
[1].width
=
499 (BOOT_DEF
& 1) ? 2 : 4;
500 /* Compensate for the nROMBT switch which swaps the flash banks */
501 printk(KERN_NOTICE
"Lubbock configured to boot from %s (bank %d)\n",
502 flashboot
?"Flash":"ROM", flashboot
);
504 lubbock_flash_data
[flashboot
^1].name
= "application-flash";
505 lubbock_flash_data
[flashboot
].name
= "boot-rom";
506 (void) platform_add_devices(devices
, ARRAY_SIZE(devices
));
508 spi_register_board_info(spi_board_info
, ARRAY_SIZE(spi_board_info
));
511 static struct map_desc lubbock_io_desc
[] __initdata
= {
513 .virtual = LUBBOCK_FPGA_VIRT
,
514 .pfn
= __phys_to_pfn(LUBBOCK_FPGA_PHYS
),
515 .length
= 0x00100000,
520 static void __init
lubbock_map_io(void)
523 iotable_init(lubbock_io_desc
, ARRAY_SIZE(lubbock_io_desc
));
528 MACHINE_START(LUBBOCK
, "Intel DBPXA250 Development Platform (aka Lubbock)")
529 /* Maintainer: MontaVista Software Inc. */
530 .phys_io
= 0x40000000,
531 .io_pg_offst
= (io_p2v(0x40000000) >> 18) & 0xfffc,
532 .map_io
= lubbock_map_io
,
533 .init_irq
= lubbock_init_irq
,
535 .init_machine
= lubbock_init
,